diff --git a/README.md b/README.md
index 08e86df..6203a5f 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ You then have access to the `THREE.Terrain` object. (Make sure the `three.js`
 library is loaded first.)
 
 The latest releases of this project have been tested with three.js
-[r91](https://github.com/mrdoob/three.js/releases/tag/r91).
+[r130](https://github.com/mrdoob/three.js/releases/tag/r130).
 
 ### Procedurally Generate a Terrain
 
@@ -41,7 +41,6 @@ terrainScene = THREE.Terrain({
     maxHeight: 100,
     minHeight: -100,
     steps: 1,
-    useBufferGeometry: false,
     xSegments: xS,
     xSize: 1024,
     ySegments: yS,
@@ -82,10 +81,9 @@ Export a terrain to a heightmap image:
 ```javascript
 // Returns a canvas with the heightmap drawn on it.
 // Append to your document body to view; right click to save as a PNG image.
-// Note: doesn't work if you generated the terrain with `useBufferGeometry` set to `true`.
 var canvas = THREE.Terrain.toHeightmap(
     // terrainScene.children[0] is the most detailed version of the terrain mesh
-    terrainScene.children[0].geometry.vertices,
+    terrainScene.children[0].geometry.attributes.position.array,
     { xSegments: 63, ySegments: 63 }
 );
 ```
@@ -94,27 +92,17 @@ The result will look something like this:
 
 ![Heightmap](https://raw.githubusercontent.com/IceCreamYou/THREE.Terrain/gh-pages/demo/img/heightmap.png)
 
-Of course, the easy way to generate a heightmap (if all you need is a static
-terrain) is to use the [demo](https://icecreamyou.github.io/THREE.Terrain/) and
-save the generated heightmap that appears in the upper-left corner. However,
-if you want to perform custom manipulations on the terrain first you will need
-to export the heightmap yourself.
+If all you need is a static terrain, the easiest way to generate a heightmap is
+to use the [demo](https://icecreamyou.github.io/THREE.Terrain/) and save the
+generated heightmap that appears in the upper-left corner. However, if you want
+to perform custom manipulations on the terrain first, you will need to export
+the heightmap yourself.
 
 To import a heightmap, create a terrain as explained above, but pass the loaded
 heightmap image (or a canvas containing a heightmap) to the `heightmap` option
 for the `THREE.Terrain()` function (instead of passing a procedural generation
 function).
 
-If you want to export and import the scattered foliage with the terrain or if
-you want to export/import the whole scene, you can do this the usual Three.js
-way (currently using
-[SceneExporter](https://github.com/mrdoob/three.js/blob/master/examples/js/exporters/SceneExporter.js)
-and [JSONLoader](http://threejs.org/docs/#Reference/Loaders/JSONLoader)).
-This will work just fine in general with the caveat that the exported files
-will be much larger than a heightmap. Note that if you do it this way and
-you're using the dynamic texture generator, you'll need to re-generate the
-texture in code and apply it to the terrain.
-
 ### Dynamic Terrain Materials
 
 When generating terrains procedurally, it's useful to automatically texture
@@ -123,20 +111,20 @@ provided that generates such a material (other than blending textures together,
 it is the same as a `MeshLambertMaterial`).
 
 ```javascript
-// t1, t2, t3, and t4 must be textures, e.g. loaded using `THREE.ImageUtils.loadTexture()`.
+// t1, t2, t3, and t4 must be textures, e.g. loaded using `THREE.TextureLoader.load()`.
 // The function takes an array specifying textures to blend together and how to do so.
 // The `levels` property indicates at what height to blend the texture in and out.
 // The `glsl` property allows specifying a GLSL expression for texture blending.
 var material = THREE.Terrain.generateBlendedMaterial([
     // The first texture is the base; other textures are blended in on top.
-    {texture: t1},
+    { texture: t1 },
     // Start blending in at height -80; opaque between -35 and 20; blend out by 50
-    {texture: t2, levels: [-80, -35, 20, 50]},
-    {texture: t3, levels: [20, 50, 60, 85]},
+    { texture: t2, levels: [-80, -35, 20, 50] },
+    { texture: t3, levels: [20, 50, 60, 85] },
     // How quickly this texture is blended in depends on its x-position.
-    {texture: t4, glsl: '1.0 - smoothstep(65.0 + smoothstep(-256.0, 256.0, vPosition.x) * 10.0, 80.0, vPosition.z)'},
+    { texture: t4, glsl: '1.0 - smoothstep(65.0 + smoothstep(-256.0, 256.0, vPosition.x) * 10.0, 80.0, vPosition.z)' },
     // Use this texture if the slope is between 27 and 45 degrees
-    {texture: t3, glsl: 'slope > 0.7853981633974483 ? 0.2 : 1.0 - smoothstep(0.47123889803846897, 0.7853981633974483, slope) + 0.2'},
+    { texture: t3, glsl: 'slope > 0.7853981633974483 ? 0.2 : 1.0 - smoothstep(0.47123889803846897, 0.7853981633974483, slope) + 0.2' },
 ]);
 ```
 
diff --git a/build/THREE.Terrain.js b/build/THREE.Terrain.js
index 7c896bf..605a18d 100644
--- a/build/THREE.Terrain.js
+++ b/build/THREE.Terrain.js
@@ -1,5 +1,5 @@
 /**
- * THREE.Terrain.js 1.6.0-20210705
+ * THREE.Terrain.js 1.6.0-20210706
  *
  * @author Isaac Sukin (http://www.isaacsukin.com/)
  * @license MIT
@@ -252,9 +252,6 @@
  *     `heightmap` property is smaller. Defaults to true.
  *   - `turbulent`: Whether to perform a turbulence transformation. Defaults to
  *     false.
- *   - `useBufferGeometry`: a Boolean indicating whether to use
- *     THREE.BufferGeometry instead of THREE.Geometry for the Terrain plane.
- *     Defaults to `false`.
  *   - `xSegments`: The number of segments (rows) to divide the terrain plane
  *     into. (This basically determines how detailed the terrain is.) Defaults
  *     to 63.
@@ -281,12 +278,10 @@ THREE.Terrain = function(options) {
         steps: 1,
         stretch: true,
         turbulent: false,
-        useBufferGeometry: false,
         xSegments: 63,
         xSize: 1024,
         ySegments: 63,
         ySize: 1024,
-        _mesh: null, // internal only
     };
     options = options || {};
     for (var opt in defaultOptions) {
@@ -303,42 +298,25 @@ THREE.Terrain = function(options) {
     scene.rotation.x = -0.5 * Math.PI;
 
     // Create the terrain mesh.
-    // To save memory, it is possible to re-use a pre-existing mesh.
-    var mesh = options._mesh;
-    if (mesh && mesh.geometry.type === 'PlaneGeometry' &&
-                mesh.geometry.parameters.widthSegments === options.xSegments &&
-                mesh.geometry.parameters.heightSegments === options.ySegments) {
-        mesh.material = options.material;
-        mesh.scale.x = options.xSize / mesh.geometry.parameters.width;
-        mesh.scale.y = options.ySize / mesh.geometry.parameters.height;
-        for (var i = 0, l = mesh.geometry.vertices.length; i < l; i++) {
-            mesh.geometry.vertices[i].z = 0;
-        }
-    }
-    else {
-        mesh = new THREE.Mesh(
-            new THREE.PlaneGeometry(options.xSize, options.ySize, options.xSegments, options.ySegments),
-            options.material
-        );
-    }
-    delete options._mesh; // Remove the reference for GC
+    var mesh = new THREE.Mesh(
+        new THREE.PlaneGeometry(options.xSize, options.ySize, options.xSegments, options.ySegments),
+        options.material
+    );
 
     // Assign elevation data to the terrain plane from a heightmap or function.
+    var zs = THREE.Terrain.toArray1D(mesh.geometry.attributes.position.array);
     if (options.heightmap instanceof HTMLCanvasElement || options.heightmap instanceof Image) {
-        THREE.Terrain.fromHeightmap(mesh.geometry.vertices, options);
+        THREE.Terrain.fromHeightmap(zs, options);
     }
     else if (typeof options.heightmap === 'function') {
-        options.heightmap(mesh.geometry.vertices, options);
+        options.heightmap(zs, options);
     }
     else {
         console.warn('An invalid value was passed for `options.heightmap`: ' + options.heightmap);
     }
+    THREE.Terrain.fromArray1D(mesh.geometry.attributes.position.array, zs);
     THREE.Terrain.Normalize(mesh, options);
 
-    if (options.useBufferGeometry) {
-        mesh.geometry = (new THREE.BufferGeometry()).fromGeometry(mesh.geometry);
-    }
-
     // lod.addLevel(mesh, options.unit * 10 * Math.pow(2, lodLevel));
 
     scene.add(mesh);
@@ -359,23 +337,25 @@ THREE.Terrain = function(options) {
  *   displayed. Valid options are the same as for {@link THREE.Terrain}().
  */
 THREE.Terrain.Normalize = function(mesh, options) {
-    var v = mesh.geometry.vertices;
+    var zs = THREE.Terrain.toArray1D(mesh.geometry.attributes.position.array);
     if (options.turbulent) {
-        THREE.Terrain.Turbulence(v, options);
+        THREE.Terrain.Turbulence(zs, options);
     }
     if (options.steps > 1) {
-        THREE.Terrain.Step(v, options.steps);
-        THREE.Terrain.Smooth(v, options);
+        THREE.Terrain.Step(zs, options.steps);
+        THREE.Terrain.Smooth(zs, options);
     }
+
     // Keep the terrain within the allotted height range if necessary, and do easing.
-    THREE.Terrain.Clamp(v, options);
+    THREE.Terrain.Clamp(zs, options);
+
     // Call the "after" callback
     if (typeof options.after === 'function') {
-        options.after(v, options);
+        options.after(zs, options);
     }
+    THREE.Terrain.fromArray1D(mesh.geometry.attributes.position.array, zs);
+
     // Mark the geometry as having changed and needing updates.
-    mesh.geometry.verticesNeedUpdate = true;
-    mesh.geometry.normalsNeedUpdate = true;
     mesh.geometry.computeBoundingSphere();
     mesh.geometry.computeFaceNormals();
     mesh.geometry.computeVertexNormals();
@@ -440,19 +420,18 @@ THREE.Terrain.GEOCLIPMAP = 2;
 THREE.Terrain.POLYGONREDUCTION = 3;
 
 /**
- * Get a 2D array of heightmap values from a 1D array of plane vertices.
+ * Get a 2D array of heightmap values from a 1D array of Z-positions.
  *
- * @param {THREE.Vector3[]} vertices
- *   A 1D array containing the vertices of the plane geometry representing the
- *   terrain, where the z-value of the vertices represent the terrain's
- *   heightmap.
+ * @param {Float32Array} vertices
+ *   A 1D array containing the vertex Z-positions of the geometry representing
+ *   the terrain.
  * @param {Object} options
  *   A map of settings defining properties of the terrain. The only properties
  *   that matter here are `xSegments` and `ySegments`, which represent how many
  *   vertices wide and deep the terrain plane is, respectively (and therefore
  *   also the dimensions of the returned array).
  *
- * @return {Number[][]}
+ * @return {Float32Array[]}
  *   A 2D array representing the terrain's heightmap.
  */
 THREE.Terrain.toArray2D = function(vertices, options) {
@@ -461,9 +440,9 @@ THREE.Terrain.toArray2D = function(vertices, options) {
         yl = options.ySegments + 1,
         i, j;
     for (i = 0; i < xl; i++) {
-        tgt[i] = new Float64Array(options.ySegments + 1);
+        tgt[i] = new Float32Array(options.ySegments + 1);
         for (j = 0; j < yl; j++) {
-            tgt[i][j] = vertices[j * xl + i].z;
+            tgt[i][j] = vertices[j * xl + i];
         }
     }
     return tgt;
@@ -472,17 +451,16 @@ THREE.Terrain.toArray2D = function(vertices, options) {
 /**
  * Set the height of plane vertices from a 2D array of heightmap values.
  *
- * @param {THREE.Vector3[]} vertices
- *   A 1D array containing the vertices of the plane geometry representing the
- *   terrain, where the z-value of the vertices represent the terrain's
- *   heightmap.
+ * @param {Float32Array} vertices
+ *   A 1D array containing the vertex Z-positions of the geometry representing
+ *   the terrain.
  * @param {Number[][]} src
  *   A 2D array representing a heightmap to apply to the terrain.
  */
 THREE.Terrain.fromArray2D = function(vertices, src) {
     for (var i = 0, xl = src.length; i < xl; i++) {
         for (var j = 0, yl = src[i].length; j < yl; j++) {
-            vertices[j * xl + i].z = src[i][j];
+            vertices[j * xl + i] = src[i][j];
         }
     }
 };
@@ -490,23 +468,22 @@ THREE.Terrain.fromArray2D = function(vertices, src) {
 /**
  * Get a 1D array of heightmap values from a 1D array of plane vertices.
  *
- * @param {THREE.Vector3[]} vertices
- *   A 1D array containing the vertices of the plane geometry representing the
- *   terrain, where the z-value of the vertices represent the terrain's
- *   heightmap.
+ * @param {Float32Array} vertices
+ *   A 1D array containing the vertex positions of the geometry representing the
+ *   terrain.
  * @param {Object} options
  *   A map of settings defining properties of the terrain. The only properties
  *   that matter here are `xSegments` and `ySegments`, which represent how many
  *   vertices wide and deep the terrain plane is, respectively (and therefore
  *   also the dimensions of the returned array).
  *
- * @return {Number[]}
+ * @return {Float32Array}
  *   A 1D array representing the terrain's heightmap.
  */
 THREE.Terrain.toArray1D = function(vertices) {
-    var tgt = new Float64Array(vertices.length);
+    var tgt = new Float32Array(vertices.length / 3);
     for (var i = 0, l = tgt.length; i < l; i++) {
-        tgt[i] = vertices[i].z;
+        tgt[i] = vertices[i * 3 + 2];
     }
     return tgt;
 };
@@ -514,16 +491,15 @@ THREE.Terrain.toArray1D = function(vertices) {
 /**
  * Set the height of plane vertices from a 1D array of heightmap values.
  *
- * @param {THREE.Vector3[]} vertices
- *   A 1D array containing the vertices of the plane geometry representing the
- *   terrain, where the z-value of the vertices represent the terrain's
- *   heightmap.
+ * @param {Float32Array} vertices
+ *   A 1D array containing the vertex positions of the geometry representing the
+ *   terrain.
  * @param {Number[]} src
  *   A 1D array representing a heightmap to apply to the terrain.
  */
 THREE.Terrain.fromArray1D = function(vertices, src) {
-    for (var i = 0, l = Math.min(vertices.length, src.length); i < l; i++) {
-        vertices[i].z = src[i];
+    for (var i = 0, l = Math.min(vertices.length / 3, src.length); i < l; i++) {
+        vertices[i * 3 + 2] = src[i];
     }
 };
 
@@ -545,22 +521,12 @@ THREE.Terrain.heightmapArray = function(method, options) {
     var arr = new Array((options.xSegments+1) * (options.ySegments+1)),
         l = arr.length,
         i;
-    // The heightmap functions provided by this script operate on THREE.Vector3
-    // objects by changing the z field, so we need to make that available.
-    // Unfortunately that means creating a bunch of objects we're just going to
-    // throw away, but a conscious decision was made here to optimize for the
-    // vector case.
-    for (i = 0; i < l; i++) {
-        arr[i] = {z: 0};
-    }
+    arr.fill(0);
     options.minHeight = options.minHeight || 0;
     options.maxHeight = typeof options.maxHeight === 'undefined' ? 1 : options.maxHeight;
     options.stretch = options.stretch || false;
     method(arr, options);
     THREE.Terrain.Clamp(arr, options);
-    for (i = 0; i < l; i++) {
-        arr[i] = arr[i].z;
-    }
     return arr;
 };
 
@@ -607,9 +573,8 @@ THREE.Terrain.EaseInStrong = function(x) {
 /**
  * Convert an image-based heightmap into vertex-based height data.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -629,7 +594,7 @@ THREE.Terrain.fromHeightmap = function(g, options) {
         for (var col = 0; col < cols; col++) {
             var i = row * cols + col,
                 idx = i * 4;
-            g[i].z = (data[idx] + data[idx+1] + data[idx+2]) / 765 * spread + options.minHeight;
+            g[i] = (data[idx] + data[idx+1] + data[idx+2]) / 765 * spread + options.minHeight;
         }
     }
 };
@@ -641,10 +606,12 @@ THREE.Terrain.fromHeightmap = function(g, options) {
  * that if `options.heightmap` is a canvas element then the image will be
  * painted onto that canvas; otherwise a new canvas will be created.
  *
- * NOTE: this method performs an operation on an array of vertices, which
- * aren't available when using `BufferGeometry`. So, if you want to use this
- * method, make sure to set the `useBufferGeometry` option to `false` when
- * generating your terrain.
+ * @param {Float32Array} g
+ *   The vertex position array for the geometry to paint to a heightmap.
+ * @param {Object} options
+ *   A map of settings that control how the terrain is constructed and
+ *   displayed. Valid values are the same as those for the `options` parameter
+ *   of {@link THREE.Terrain}().
  *
  * @return {HTMLCanvasElement}
  *   A canvas with the relevant heightmap painted on it.
@@ -657,9 +624,9 @@ THREE.Terrain.toHeightmap = function(g, options) {
     if (!hasMax || !hasMin) {
         var max2 = max,
             min2 = min;
-        for (var k = 0, l = g.length; k < l; k++) {
-            if (g[k].z > max2) max2 = g[k].z;
-            if (g[k].z < min2) min2 = g[k].z;
+        for (var k = 2, l = g.length; k < l; k += 3) {
+            if (g[k] > max2) max2 = g[k];
+            if (g[k] < min2) min2 = g[k];
         }
         if (!hasMax) max = max2;
         if (!hasMin) min = min2;
@@ -677,7 +644,7 @@ THREE.Terrain.toHeightmap = function(g, options) {
         for (var col = 0; col < cols; col++) {
             var i = row * cols + col,
             idx = i * 4;
-            data[idx] = data[idx+1] = data[idx+2] = Math.round(((g[i].z - min) / spread) * 255);
+            data[idx] = data[idx+1] = data[idx+2] = Math.round(((g[i * 3 + 2] - min) / spread) * 255);
             data[idx+3] = 255;
         }
     }
@@ -688,9 +655,8 @@ THREE.Terrain.toHeightmap = function(g, options) {
 /**
  * Rescale the heightmap of a terrain to keep it within the maximum range.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -704,8 +670,8 @@ THREE.Terrain.Clamp = function(g, options) {
         i;
     options.easing = options.easing || THREE.Terrain.Linear;
     for (i = 0; i < l; i++) {
-        if (g[i].z < min) min = g[i].z;
-        if (g[i].z > max) max = g[i].z;
+        if (g[i] < min) min = g[i];
+        if (g[i] > max) max = g[i];
     }
     var actualRange = max - min,
         optMax = typeof options.maxHeight !== 'number' ? max : options.maxHeight,
@@ -718,7 +684,7 @@ THREE.Terrain.Clamp = function(g, options) {
         range = targetMax - targetMin;
     }
     for (i = 0; i < l; i++) {
-        g[i].z = options.easing((g[i].z - min) / actualRange) * range + optMin;
+        g[i] = options.easing((g[i] - min) / actualRange) * range + optMin;
     }
 };
 
@@ -727,9 +693,8 @@ THREE.Terrain.Clamp = function(g, options) {
  *
  * Useful to make islands or enclosing walls/cliffs.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -771,10 +736,10 @@ THREE.Terrain.Edges = function(g, options, direction, distance, easing, edges) {
             k1 = j*xl + i;
             k2 = (options.ySegments-j)*xl + i;
             if (edges.top) {
-                g[k1].z = max(g[k1].z, (peak - g[k1].z) * multiplier + g[k1].z);
+                g[k1] = max(g[k1], (peak - g[k1]) * multiplier + g[k1]);
             }
             if (edges.bottom) {
-                g[k2].z = max(g[k2].z, (peak - g[k2].z) * multiplier + g[k2].z);
+                g[k2] = max(g[k2], (peak - g[k2]) * multiplier + g[k2]);
             }
         }
     }
@@ -784,10 +749,10 @@ THREE.Terrain.Edges = function(g, options, direction, distance, easing, edges) {
             k1 = i*xl+j;
             k2 = (options.ySegments-i)*xl + (options.xSegments-j);
             if (edges.left) {
-                g[k1].z = max(g[k1].z, (peak - g[k1].z) * multiplier + g[k1].z);
+                g[k1] = max(g[k1], (peak - g[k1]) * multiplier + g[k1]);
             }
             if (edges.right) {
-                g[k2].z = max(g[k2].z, (peak - g[k2].z) * multiplier + g[k2].z);
+                g[k2] = max(g[k2], (peak - g[k2]) * multiplier + g[k2]);
             }
         }
     }
@@ -803,9 +768,8 @@ THREE.Terrain.Edges = function(g, options, direction, distance, easing, edges) {
  *
  * Useful to make islands or enclosing walls/cliffs.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -842,10 +806,10 @@ THREE.Terrain.RadialEdges = function(g, options, direction, distance, easing) {
             vertexDistance = Math.min(edgeRadius, Math.sqrt((xl2-i)*xSegmentSize*(xl2-i)*xSegmentSize + (yl2-j)*ySegmentSize*(yl2-j)*ySegmentSize) - distance);
             if (vertexDistance < 0) continue;
             multiplier = easing(vertexDistance / edgeRadius);
-            g[k].z = max(g[k].z, (peak - g[k].z) * multiplier + g[k].z);
+            g[k] = max(g[k], (peak - g[k]) * multiplier + g[k]);
             // Use symmetry to reduce the number of iterations.
             k = (options.ySegments-j)*xl + i;
-            g[k].z = max(g[k].z, (peak - g[k].z) * multiplier + g[k].z);
+            g[k] = max(g[k], (peak - g[k]) * multiplier + g[k]);
         }
     }
 };
@@ -853,9 +817,8 @@ THREE.Terrain.RadialEdges = function(g, options, direction, distance, easing) {
 /**
  * Smooth the terrain by setting each point to the mean of its neighborhood.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -865,7 +828,7 @@ THREE.Terrain.RadialEdges = function(g, options, direction, distance, easing) {
  *   neighbors.
  */
 THREE.Terrain.Smooth = function(g, options, weight) {
-    var heightmap = new Float64Array(g.length);
+    var heightmap = new Float32Array(g.length);
     for (var i = 0, xl = options.xSegments + 1, yl = options.ySegments + 1; i < xl; i++) {
         for (var j = 0; j < yl; j++) {
             var sum = 0,
@@ -874,7 +837,7 @@ THREE.Terrain.Smooth = function(g, options, weight) {
                 for (var m = -1; m <= 1; m++) {
                     var key = (j+n)*xl + i + m;
                     if (typeof g[key] !== 'undefined' && i+m >= 0 && j+n >= 0 && i+m < xl && j+n < yl) {
-                        sum += g[key].z;
+                        sum += g[key];
                         c++;
                     }
                 }
@@ -885,17 +848,22 @@ THREE.Terrain.Smooth = function(g, options, weight) {
     weight = weight || 0;
     var w = 1 / (1 + weight);
     for (var k = 0, l = g.length; k < l; k++) {
-        g[k].z = (heightmap[k] + g[k].z * weight) * w;
+        g[k] = (heightmap[k] + g[k] * weight) * w;
     }
 };
 
 /**
  * Smooth the terrain by setting each point to the median of its neighborhood.
  *
- * Parameters are the same as those for {@link THREE.Terrain.DiamondSquare}.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
+ * @param {Object} options
+ *   A map of settings that control how the terrain is constructed and
+ *   displayed. Valid values are the same as those for the `options` parameter
+ *   of {@link THREE.Terrain}().
  */
 THREE.Terrain.SmoothMedian = function(g, options) {
-    var heightmap = new Float64Array(g.length),
+    var heightmap = new Float32Array(g.length),
         neighborValues = [],
         neighborKeys = [],
         sortByValue = function(a, b) {
@@ -909,7 +877,7 @@ THREE.Terrain.SmoothMedian = function(g, options) {
                 for (var m = -1; m <= 1; m++) {
                     var key = (j+n)*xl + i + m;
                     if (typeof g[key] !== 'undefined' && i+m >= 0 && j+n >= 0 && i+m < xl && j+n < yl) {
-                        neighborValues.push(g[key].z);
+                        neighborValues.push(g[key]);
                         neighborKeys.push(key);
                     }
                 }
@@ -918,25 +886,24 @@ THREE.Terrain.SmoothMedian = function(g, options) {
             var halfKey = Math.floor(neighborKeys.length*0.5),
                 median;
             if (neighborKeys.length % 2 === 1) {
-                median = g[neighborKeys[halfKey]].z;
+                median = g[neighborKeys[halfKey]];
             }
             else {
-                median = (g[neighborKeys[halfKey-1]].z + g[neighborKeys[halfKey]].z) * 0.5;
+                median = (g[neighborKeys[halfKey-1]] + g[neighborKeys[halfKey]]) * 0.5;
             }
             heightmap[j*xl + i] = median;
         }
     }
     for (var k = 0, l = g.length; k < l; k++) {
-        g[k].z = heightmap[k];
+        g[k] = heightmap[k];
     }
 };
 
 /**
  * Smooth the terrain by clamping each point within its neighbors' extremes.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -948,7 +915,7 @@ THREE.Terrain.SmoothMedian = function(g, options) {
  *   point can be farther outside the range of its neighbors.
  */
 THREE.Terrain.SmoothConservative = function(g, options, multiplier) {
-    var heightmap = new Float64Array(g.length);
+    var heightmap = new Float32Array(g.length);
     for (var i = 0, xl = options.xSegments + 1, yl = options.ySegments + 1; i < xl; i++) {
         for (var j = 0; j < yl; j++) {
             var max = -Infinity,
@@ -957,8 +924,8 @@ THREE.Terrain.SmoothConservative = function(g, options, multiplier) {
                 for (var m = -1; m <= 1; m++) {
                     var key = (j+n)*xl + i + m;
                     if (typeof g[key] !== 'undefined' && n && m && i+m >= 0 && j+n >= 0 && i+m < xl && j+n < yl) {
-                        if (g[key].z < min) min = g[key].z;
-                        if (g[key].z > max) max = g[key].z;
+                        if (g[key] < min) min = g[key];
+                        if (g[key] > max) max = g[key];
                     }
                 }
             }
@@ -969,20 +936,19 @@ THREE.Terrain.SmoothConservative = function(g, options, multiplier) {
                 max = middle + halfdiff * multiplier;
                 min = middle - halfdiff * multiplier;
             }
-            heightmap[kk] = g[kk].z > max ? max : (g[kk].z < min ? min : g[kk].z);
+            heightmap[kk] = g[kk] > max ? max : (g[kk] < min ? min : g[kk]);
         }
     }
     for (var k = 0, l = g.length; k < l; k++) {
-        g[k].z = heightmap[k];
+        g[k] = heightmap[k];
     }
 };
 
 /**
  * Partition a terrain into flat steps.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Number} [levels]
  *   The number of steps to divide the terrain into. Defaults to
  *   (g.length/2)^(1/4).
@@ -999,7 +965,7 @@ THREE.Terrain.Step = function(g, levels) {
         levels = Math.floor(Math.pow(l*0.5, 0.25));
     }
     for (i = 0; i < l; i++) {
-        heights[i] = g[i].z;
+        heights[i] = g[i];
     }
     heights.sort(function(a, b) { return a - b; });
     for (i = 0; i < levels; i++) {
@@ -1019,10 +985,10 @@ THREE.Terrain.Step = function(g, levels) {
 
     // Set the height of each vertex to the average height of its bucket
     for (i = 0; i < l; i++) {
-        var startHeight = g[i].z;
+        var startHeight = g[i];
         for (j = 0; j < levels; j++) {
             if (startHeight >= buckets[j].min && startHeight <= buckets[j].max) {
-                g[i].z = buckets[j].avg;
+                g[i] = buckets[j].avg;
                 break;
             }
         }
@@ -1032,21 +998,24 @@ THREE.Terrain.Step = function(g, levels) {
 /**
  * Transform to turbulent noise.
  *
- * Parameters are the same as those for {@link THREE.Terrain.DiamondSquare}.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
+ * @param {Object} [options]
+ *   The same map of settings you'd pass to {@link THREE.Terrain()}. Only
+ *   `minHeight` and `maxHeight` are used (and required) here.
  */
 THREE.Terrain.Turbulence = function(g, options) {
     var range = options.maxHeight - options.minHeight;
     for (var i = 0, l = g.length; i < l; i++) {
-        g[i].z = options.minHeight + Math.abs((g[i].z - options.minHeight) * 2 - range);
+        g[i] = options.minHeight + Math.abs((g[i] - options.minHeight) * 2 - range);
     }
 };
 
 /**
  * A utility for generating heightmap functions by additive composition.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} [options]
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -1085,9 +1054,8 @@ THREE.Terrain.MultiPass = function(g, options, passes) {
 /**
  * Generate random terrain using a curve.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -1105,7 +1073,7 @@ THREE.Terrain.Curve = function(g, options, curve) {
         scalar = options.frequency / (Math.min(options.xSegments, options.ySegments) + 1);
     for (var i = 0, xl = options.xSegments + 1, yl = options.ySegments + 1; i < xl; i++) {
         for (var j = 0; j < yl; j++) {
-            g[j * xl + i].z += curve(i * scalar, j * scalar) * range;
+            g[j * xl + i] += curve(i * scalar, j * scalar) * range;
         }
     }
 };
@@ -1121,7 +1089,7 @@ THREE.Terrain.Cosine = function(g, options) {
         phase = Math.random() * Math.PI * 2;
     for (var i = 0, xl = options.xSegments + 1; i < xl; i++) {
         for (var j = 0, yl = options.ySegments + 1; j < yl; j++) {
-            g[j * xl + i].z += amplitude * (Math.cos(i * frequencyScalar + phase) + Math.cos(j * frequencyScalar + phase));
+            g[j * xl + i] += amplitude * (Math.cos(i * frequencyScalar + phase) + Math.cos(j * frequencyScalar + phase));
         }
     }
 };
@@ -1145,9 +1113,8 @@ THREE.Terrain.CosineLayers = function(g, options) {
  *
  * Based on https://github.com/srchea/Terrain-Generation/blob/master/js/classes/TerrainGeneration.js
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -1213,7 +1180,7 @@ THREE.Terrain.DiamondSquare = function(g, options) {
     // Apply heightmap
     for (i = 0; i < xl; i++) {
         for (j = 0; j < yl; j++) {
-            g[j * xl + i].z += heightmap[i][j];
+            g[j * xl + i] += heightmap[i][j];
         }
     }
 
@@ -1244,13 +1211,13 @@ THREE.Terrain.Fault = function(g, options) {
             for (var j = 0, yl = options.ySegments + 1; j < yl; j++) {
                 var distance = a*i + b*j - c;
                 if (distance > smoothDistance) {
-                    g[j * xl + i].z += displacement;
+                    g[j * xl + i] += displacement;
                 }
                 else if (distance < -smoothDistance) {
-                    g[j * xl + i].z -= displacement;
+                    g[j * xl + i] -= displacement;
                 }
                 else {
-                    g[j * xl + i].z += Math.cos(distance / smoothDistance * Math.PI * 2) * displacement;
+                    g[j * xl + i] += Math.cos(distance / smoothDistance * Math.PI * 2) * displacement;
                 }
             }
         }
@@ -1265,9 +1232,8 @@ THREE.Terrain.Fault = function(g, options) {
  * terrain and raise a small hill around those points. Those small hills
  * eventually accumulate into large hills with distinct features.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -1328,9 +1294,8 @@ THREE.Terrain.Hill = function(g, options, feature, shape) {
  * of the points to place small hills are not uniformly randomly distributed
  * but instead are more likely to occur close to the center of the terrain.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -1378,18 +1343,18 @@ THREE.Terrain.HillIsland = (function() {
             var neighborKey = j * xl + i;
             // If the neighbor is lower, move the particle to that neighbor and re-evaluate.
             if (typeof g[neighborKey] !== 'undefined') {
-                if (g[neighborKey].z < g[currentKey].z) {
+                if (g[neighborKey] < g[currentKey]) {
                     deposit(g, i, j, xl, displacement);
                     return;
                 }
             }
             // Deposit some particles on the edge.
             else if (Math.random() < 0.2) {
-                g[currentKey].z += displacement;
+                g[currentKey] += displacement;
                 return;
             }
         }
-        g[currentKey].z += displacement;
+        g[currentKey] += displacement;
     }
 
     /**
@@ -1442,7 +1407,7 @@ THREE.Terrain.Perlin = function(g, options) {
         divisor = (Math.min(options.xSegments, options.ySegments) + 1) / options.frequency;
     for (var i = 0, xl = options.xSegments + 1; i < xl; i++) {
         for (var j = 0, yl = options.ySegments + 1; j < yl; j++) {
-            g[j * xl + i].z += noise.perlin(i / divisor, j / divisor) * range;
+            g[j * xl + i] += noise.perlin(i / divisor, j / divisor) * range;
         }
     }
 };
@@ -1488,7 +1453,7 @@ THREE.Terrain.Simplex = function(g, options) {
         divisor = (Math.min(options.xSegments, options.ySegments) + 1) * 2 / options.frequency;
     for (var i = 0, xl = options.xSegments + 1; i < xl; i++) {
         for (var j = 0, yl = options.ySegments + 1; j < yl; j++) {
-            g[j * xl + i].z += noise.simplex(i / divisor, j / divisor) * range;
+            g[j * xl + i] += noise.simplex(i / divisor, j / divisor) * range;
         }
     }
 };
@@ -1568,7 +1533,7 @@ THREE.Terrain.SimplexLayers = function(g, options) {
                 // http://stackoverflow.com/q/23708306/843621
                 var kg = j * xl + i,
                     kd = j * segments + i;
-                g[kg].z += data[kd];
+                g[kg] += data[kd];
             }
         }
     }
@@ -1637,7 +1602,7 @@ THREE.Terrain.Weierstrass = function(g, options) {
                 var y = Math.pow(1+r21, -k) * Math.sin(Math.pow(1+r22, k) * (j + 0.25*Math.cos(i) + r24*i) * r23);
                 sum -= Math.exp(dir1*x*x + dir2*y*y);
             }
-            g[j * xl + i].z += sum * range;
+            g[j * xl + i] += sum * range;
         }
     }
     THREE.Terrain.Clamp(g, options);
@@ -1764,7 +1729,7 @@ THREE.Terrain.generateBlendedMaterial = function(textures) {
 /**
  * Scatter a mesh across the terrain.
  *
- * @param {THREE.Geometry} geometry
+ * @param {THREE.BufferGeometry} geometry
  *   The terrain's geometry (or the highest-resolution version of it).
  * @param {Object} options
  *   A map of settings that controls how the meshes are scattered, with the
@@ -1815,10 +1780,6 @@ THREE.Terrain.ScatterMeshes = function(geometry, options) {
         console.error('options.mesh is required for THREE.Terrain.ScatterMeshes but was not passed');
         return;
     }
-    if (geometry instanceof THREE.BufferGeometry) {
-        console.warn('The terrain mesh is using BufferGeometry but THREE.Terrain.ScatterMeshes can only work with Geometry.');
-        return;
-    }
     if (!options.scene) {
         options.scene = new THREE.Object3D();
     }
@@ -1843,86 +1804,68 @@ THREE.Terrain.ScatterMeshes = function(geometry, options) {
         randomness,
         spreadRange = 1 / options.smoothSpread,
         doubleSizeVariance = options.sizeVariance * 2,
-        v = geometry.vertices,
-        meshes = [],
+        vertex1 = new THREE.Vector3(),
+        vertex2 = new THREE.Vector3(),
+        vertex3 = new THREE.Vector3(),
+        faceNormal = new THREE.Vector3(),
         up = options.mesh.up.clone().applyAxisAngle(new THREE.Vector3(1, 0, 0), 0.5*Math.PI);
     if (spreadIsNumber) {
         randomHeightmap = options.randomness();
         randomness = typeof randomHeightmap === 'number' ? Math.random : function(k) { return randomHeightmap[k]; };
     }
-    // geometry.computeFaceNormals();
-    for (var i = 0, w = options.w*2; i < w; i++) {
-        for (var j = 0, h = options.h; j < h; j++) {
-            var key = j*w + i,
-                f = geometry.faces[key],
-                place = false;
-            if (spreadIsNumber) {
-                var rv = randomness(key);
-                if (rv < options.spread) {
-                    place = true;
-                }
-                else if (rv < options.spread + options.smoothSpread) {
-                    // Interpolate rv between spread and spread + smoothSpread,
-                    // then multiply that "easing" value by the probability
-                    // that a mesh would get placed on a given face.
-                    place = THREE.Terrain.EaseInOut((rv - options.spread) * spreadRange) * options.spread > Math.random();
-                }
+
+    geometry = geometry.toNonIndexed();
+    var gArray = geometry.attributes.position.array;
+    for (var i = 0; i < geometry.attributes.position.array.length; i += 9) {
+        vertex1.set(gArray[i + 0], gArray[i + 1], gArray[i + 2]);
+        vertex2.set(gArray[i + 3], gArray[i + 4], gArray[i + 5]);
+        vertex3.set(gArray[i + 6], gArray[i + 7], gArray[i + 8]);
+        THREE.Triangle.getNormal(vertex1, vertex2, vertex3, faceNormal);
+
+        var place = false;
+        if (spreadIsNumber) {
+            var rv = randomness(key);
+            if (rv < options.spread) {
+                place = true;
             }
-            else {
-                place = options.spread(v[f.a], key, f, i, j);
+            else if (rv < options.spread + options.smoothSpread) {
+                // Interpolate rv between spread and spread + smoothSpread,
+                // then multiply that "easing" value by the probability
+                // that a mesh would get placed on a given face.
+                place = THREE.Terrain.EaseInOut((rv - options.spread) * spreadRange) * options.spread > Math.random();
             }
-            if (place) {
-                // Don't place a mesh if the angle is too steep.
-                if (f.normal.angleTo(up) > options.maxSlope) {
-                    continue;
-                }
-                var mesh = options.mesh.clone();
-                // mesh.geometry.computeBoundingBox();
-                mesh.position.copy(v[f.a]).add(v[f.b]).add(v[f.c]).divideScalar(3);
-                // mesh.translateZ((mesh.geometry.boundingBox.max.z - mesh.geometry.boundingBox.min.z) * 0.5);
-                if (options.maxTilt > 0) {
-                    var normal = mesh.position.clone().add(f.normal);
-                    mesh.lookAt(normal);
-                    var tiltAngle = f.normal.angleTo(up);
-                    if (tiltAngle > options.maxTilt) {
-                        var ratio = options.maxTilt / tiltAngle;
-                        mesh.rotation.x *= ratio;
-                        mesh.rotation.y *= ratio;
-                        mesh.rotation.z *= ratio;
-                    }
-                }
-                mesh.rotation.x += 90 / 180 * Math.PI;
-                mesh.rotateY(Math.random() * 2 * Math.PI);
-                if (options.sizeVariance) {
-                    var variance = Math.random() * doubleSizeVariance - options.sizeVariance;
-                    mesh.scale.x = mesh.scale.z = 1 + variance;
-                    mesh.scale.y += variance;
+        }
+        else {
+            place = options.spread(vertex1, i / 9, faceNormal, i);
+        }
+        if (place) {
+            // Don't place a mesh if the angle is too steep.
+            if (faceNormal.angleTo(up) > options.maxSlope) {
+                continue;
+            }
+            var mesh = options.mesh.clone();
+            mesh.position.addVectors(vertex1, vertex2).add(vertex3).divideScalar(3);
+            if (options.maxTilt > 0) {
+                var normal = mesh.position.clone().add(faceNormal);
+                mesh.lookAt(normal);
+                var tiltAngle = faceNormal.angleTo(up);
+                if (tiltAngle > options.maxTilt) {
+                    var ratio = options.maxTilt / tiltAngle;
+                    mesh.rotation.x *= ratio;
+                    mesh.rotation.y *= ratio;
+                    mesh.rotation.z *= ratio;
                 }
-                meshes.push(mesh);
             }
-        }
-    }
+            mesh.rotation.x += 90 / 180 * Math.PI;
+            mesh.rotateY(Math.random() * 2 * Math.PI);
+            if (options.sizeVariance) {
+                var variance = Math.random() * doubleSizeVariance - options.sizeVariance;
+                mesh.scale.x = mesh.scale.z = 1 + variance;
+                mesh.scale.y += variance;
+            }
 
-    // Merge geometries.
-    var k, l;
-    if (options.mesh.geometry instanceof THREE.Geometry) {
-        var g = new THREE.Geometry();
-        for (k = 0, l = meshes.length; k < l; k++) {
-            var m = meshes[k];
-            m.updateMatrix();
-            g.merge(m.geometry, m.matrix);
-        }
-        /*
-        if (!(options.mesh.material instanceof THREE.MeshFaceMaterial)) {
-            g = THREE.BufferGeometryUtils.fromGeometry(g);
-        }
-        */
-        options.scene.add(new THREE.Mesh(g, options.mesh.material));
-    }
-    // There's no BufferGeometry merge method implemented yet.
-    else {
-        for (k = 0, l = meshes.length; k < l; k++) {
-            options.scene.add(meshes[k]);
+            mesh.updateMatrix();
+            options.scene.add(mesh);
         }
     }
 
@@ -1986,9 +1929,8 @@ THREE.Terrain.ScatterHelper = function(method, options, skip, threshold) {
 };
 
 // Allows placing geometrically-described features on a terrain.
-// If you want these features to look a little less regular,
-// just apply them before a procedural pass.
-// If you want more complex influence, you can just composite heightmaps.
+// If you want these features to look a little less regular, apply them before a procedural pass.
+// If you want more complex influence, you can composite heightmaps.
 
 /**
  * Equations describing geographic features.
@@ -2108,12 +2050,12 @@ THREE.Terrain.Influence = function(g, options, f, x, y, r, h, t, e) {
                 // interpolate using e, then blend according to t.
                 d = f(fdr, fdxr, fdyr) * h * (1 - e(fdr, fdxr, fdyr));
             if (fd > r || typeof g[k] == 'undefined') continue;
-            if      (t === THREE.AdditiveBlending)    g[k].z += d; // jscs:ignore requireSpaceAfterKeywords
-            else if (t === THREE.SubtractiveBlending) g[k].z -= d;
-            else if (t === THREE.MultiplyBlending)    g[k].z *= d;
-            else if (t === THREE.NoBlending)          g[k].z  = d;
-            else if (t === THREE.NormalBlending)      g[k].z  = e(fdr, fdxr, fdyr) * g[k].z + d;
-            else if (typeof t === 'function')         g[k].z  = t(g[k].z, d, fdr, fdxr, fdyr);
+            if      (t === THREE.AdditiveBlending)    g[k] += d; // jscs:ignore requireSpaceAfterKeywords
+            else if (t === THREE.SubtractiveBlending) g[k] -= d;
+            else if (t === THREE.MultiplyBlending)    g[k] *= d;
+            else if (t === THREE.NoBlending)          g[k]  = d;
+            else if (t === THREE.NormalBlending)      g[k]  = e(fdr, fdxr, fdyr) * g[k] + d;
+            else if (typeof t === 'function')         g[k]  = t(g[k].z, d, fdr, fdxr, fdyr);
         }
     }
 };
diff --git a/build/THREE.Terrain.min.js b/build/THREE.Terrain.min.js
index 50ac62e..16152a1 100644
--- a/build/THREE.Terrain.min.js
+++ b/build/THREE.Terrain.min.js
@@ -1,9 +1,9 @@
 /**
- * THREE.Terrain.js 1.6.0-20210705
+ * THREE.Terrain.js 1.6.0-20210706
  *
  * @author Isaac Sukin (http://www.isaacsukin.com/)
  * @license MIT
  */
 
-!function(a){function b(a,b,c){this.x=a,this.y=b,this.z=c}function c(a){return a*a*a*(a*(6*a-15)+10)}function d(a,b,c){return(1-c)*a+c*b}var e=a.noise={};b.prototype.dot2=function(a,b){return this.x*a+this.y*b},b.prototype.dot3=function(a,b,c){return this.x*a+this.y*b+this.z*c};var f=[new b(1,1,0),new b(-1,1,0),new b(1,-1,0),new b(-1,-1,0),new b(1,0,1),new b(-1,0,1),new b(1,0,-1),new b(-1,0,-1),new b(0,1,1),new b(0,-1,1),new b(0,1,-1),new b(0,-1,-1)],g=[151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,23,190,6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,174,20,125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,102,143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,89,18,169,200,196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,250,124,123,5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,223,183,170,213,119,248,152,2,44,154,163,70,221,153,101,155,167,43,172,9,129,22,39,253,19,98,108,110,79,113,224,232,178,185,112,104,218,246,97,228,251,34,242,193,238,210,144,12,191,179,162,241,81,51,145,235,249,14,239,107,49,192,214,31,181,199,106,157,184,84,204,176,115,121,50,45,127,4,150,254,138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180],h=new Array(512),i=new Array(512);e.seed=function(a){a>0&&a<1&&(a*=65536),a=Math.floor(a),a<256&&(a|=a<<8);for(var b=0;b<256;b++){var c;c=1&b?g[b]^255&a:g[b]^a>>8&255,h[b]=h[b+256]=c,i[b]=i[b+256]=f[c%12]}},e.seed(Math.random());var j=.5*(Math.sqrt(3)-1),k=(3-Math.sqrt(3))/6,l=1/3,m=1/6;e.simplex=function(a,b){var c,d,e,f=(a+b)*j,g=Math.floor(a+f),l=Math.floor(b+f),m=(g+l)*k,n=a-g+m,o=b-l+m,p,q;n>o?(p=1,q=0):(p=0,q=1);var r=n-p+k,s=o-q+k,t=n-1+2*k,u=o-1+2*k;g&=255,l&=255;var v=i[g+h[l]],w=i[g+p+h[l+q]],x=i[g+1+h[l+1]],y=.5-n*n-o*o;y<0?c=0:(y*=y,c=y*y*v.dot2(n,o));var z=.5-r*r-s*s;z<0?d=0:(z*=z,d=z*z*w.dot2(r,s));var A=.5-t*t-u*u;return A<0?e=0:(A*=A,e=A*A*x.dot2(t,u)),70*(c+d+e)},e.perlin=function(a,b){var e=Math.floor(a),f=Math.floor(b);a-=e,b-=f,e&=255,f&=255;var g=i[e+h[f]].dot2(a,b),j=i[e+h[f+1]].dot2(a,b-1),k=i[e+1+h[f]].dot2(a-1,b),l=i[e+1+h[f+1]].dot2(a-1,b-1),m=c(a);return d(d(g,k,m),d(j,l,m),c(b))}}(this),THREE.Terrain=function(a){var b={after:null,easing:THREE.Terrain.Linear,heightmap:THREE.Terrain.DiamondSquare,material:null,maxHeight:100,minHeight:-100,optimization:THREE.Terrain.NONE,frequency:2.5,steps:1,stretch:!0,turbulent:!1,useBufferGeometry:!1,xSegments:63,xSize:1024,ySegments:63,ySize:1024,_mesh:null};a=a||{};for(var c in b)b.hasOwnProperty(c)&&(a[c]=void 0===a[c]?b[c]:a[c]);a.material=a.material||new THREE.MeshBasicMaterial({color:15623731});var d=new THREE.Object3D;d.rotation.x=-.5*Math.PI;var e=a._mesh;if(e&&"PlaneGeometry"===e.geometry.type&&e.geometry.parameters.widthSegments===a.xSegments&&e.geometry.parameters.heightSegments===a.ySegments){e.material=a.material,e.scale.x=a.xSize/e.geometry.parameters.width,e.scale.y=a.ySize/e.geometry.parameters.height;for(var f=0,g=e.geometry.vertices.length;f<g;f++)e.geometry.vertices[f].z=0}else e=new THREE.Mesh(new THREE.PlaneGeometry(a.xSize,a.ySize,a.xSegments,a.ySegments),a.material);return delete a._mesh,a.heightmap instanceof HTMLCanvasElement||a.heightmap instanceof Image?THREE.Terrain.fromHeightmap(e.geometry.vertices,a):"function"==typeof a.heightmap?a.heightmap(e.geometry.vertices,a):console.warn("An invalid value was passed for `options.heightmap`: "+a.heightmap),THREE.Terrain.Normalize(e,a),a.useBufferGeometry&&(e.geometry=(new THREE.BufferGeometry).fromGeometry(e.geometry)),d.add(e),d},THREE.Terrain.Normalize=function(a,b){var c=a.geometry.vertices;b.turbulent&&THREE.Terrain.Turbulence(c,b),b.steps>1&&(THREE.Terrain.Step(c,b.steps),THREE.Terrain.Smooth(c,b)),THREE.Terrain.Clamp(c,b),"function"==typeof b.after&&b.after(c,b),a.geometry.verticesNeedUpdate=!0,a.geometry.normalsNeedUpdate=!0,a.geometry.computeBoundingSphere(),a.geometry.computeFaceNormals(),a.geometry.computeVertexNormals()},THREE.Terrain.NONE=0,THREE.Terrain.GEOMIPMAP=1,THREE.Terrain.GEOCLIPMAP=2,THREE.Terrain.POLYGONREDUCTION=3,THREE.Terrain.toArray2D=function(a,b){var c=new Array(b.xSegments+1),d=b.xSegments+1,e=b.ySegments+1,f,g;for(f=0;f<d;f++)for(c[f]=new Float64Array(b.ySegments+1),g=0;g<e;g++)c[f][g]=a[g*d+f].z;return c},THREE.Terrain.fromArray2D=function(a,b){for(var c=0,d=b.length;c<d;c++)for(var e=0,f=b[c].length;e<f;e++)a[e*d+c].z=b[c][e]},THREE.Terrain.toArray1D=function(a){for(var b=new Float64Array(a.length),c=0,d=b.length;c<d;c++)b[c]=a[c].z;return b},THREE.Terrain.fromArray1D=function(a,b){for(var c=0,d=Math.min(a.length,b.length);c<d;c++)a[c].z=b[c]},THREE.Terrain.heightmapArray=function(a,b){var c=new Array((b.xSegments+1)*(b.ySegments+1)),d=c.length,e;for(e=0;e<d;e++)c[e]={z:0};for(b.minHeight=b.minHeight||0,b.maxHeight=void 0===b.maxHeight?1:b.maxHeight,b.stretch=b.stretch||!1,a(c,b),THREE.Terrain.Clamp(c,b),e=0;e<d;e++)c[e]=c[e].z;return c},THREE.Terrain.Linear=function(a){return a},THREE.Terrain.EaseIn=function(a){return a*a},THREE.Terrain.EaseOut=function(a){return-a*(a-2)},THREE.Terrain.EaseInOut=function(a){return a*a*(3-2*a)},THREE.Terrain.InEaseOut=function(a){var b=2*a-1;return.5*b*b*b+.5},THREE.Terrain.EaseInWeak=function(a){return Math.pow(a,1.55)},THREE.Terrain.EaseInStrong=function(a){return a*a*a*a*a*a*a},THREE.Terrain.fromHeightmap=function(a,b){var c=document.createElement("canvas"),d=c.getContext("2d"),e=b.ySegments+1,f=b.xSegments+1,g=b.maxHeight-b.minHeight;c.width=f,c.height=e,d.drawImage(b.heightmap,0,0,c.width,c.height);for(var h=d.getImageData(0,0,c.width,c.height).data,i=0;i<e;i++)for(var j=0;j<f;j++){var k=i*f+j,l=4*k;a[k].z=(h[l]+h[l+1]+h[l+2])/765*g+b.minHeight}},THREE.Terrain.toHeightmap=function(a,b){var c=void 0!==b.maxHeight,d=void 0!==b.minHeight,e=c?b.maxHeight:-1/0,f=d?b.minHeight:1/0;if(!c||!d){for(var g=e,h=f,i=0,j=a.length;i<j;i++)a[i].z>g&&(g=a[i].z),a[i].z<h&&(h=a[i].z);c||(e=g),d||(f=h)}var k=b.heightmap instanceof HTMLCanvasElement?b.heightmap:document.createElement("canvas"),l=k.getContext("2d"),m=b.ySegments+1,n=b.xSegments+1,o=e-f;k.width=n,k.height=m;for(var p=l.createImageData(k.width,k.height),q=p.data,r=0;r<m;r++)for(var s=0;s<n;s++){var t=r*n+s,u=4*t;q[u]=q[u+1]=q[u+2]=Math.round((a[t].z-f)/o*255),q[u+3]=255}return l.putImageData(p,0,0),k},THREE.Terrain.Clamp=function(a,b){var c=1/0,d=-1/0,e=a.length,f;for(b.easing=b.easing||THREE.Terrain.Linear,f=0;f<e;f++)a[f].z<c&&(c=a[f].z),a[f].z>d&&(d=a[f].z);var g=d-c,h="number"!=typeof b.maxHeight?d:b.maxHeight,i="number"!=typeof b.minHeight?c:b.minHeight,j=b.stretch?h:d<h?d:h,k=b.stretch?i:c>i?c:i,l=j-k;for(j<k&&(j=h,l=j-k),f=0;f<e;f++)a[f].z=b.easing((a[f].z-c)/g)*l+i},THREE.Terrain.Edges=function(a,b,c,d,e,f){var g=Math.floor(d/(b.xSize/b.xSegments))||1,h=Math.floor(d/(b.ySize/b.ySegments))||1,i=c?b.maxHeight:b.minHeight,j=c?Math.max:Math.min,k=b.xSegments+1,l=b.ySegments+1,m,n,o,p,q;for(e=e||THREE.Terrain.EaseInOut,"object"!=typeof f&&(f={top:!0,bottom:!0,left:!0,right:!0}),m=0;m<k;m++)for(n=0;n<h;n++)o=e(1-n/h),p=n*k+m,q=(b.ySegments-n)*k+m,f.top&&(a[p].z=j(a[p].z,(i-a[p].z)*o+a[p].z)),f.bottom&&(a[q].z=j(a[q].z,(i-a[q].z)*o+a[q].z));for(m=0;m<l;m++)for(n=0;n<g;n++)o=e(1-n/g),p=m*k+n,q=(b.ySegments-m)*k+(b.xSegments-n),f.left&&(a[p].z=j(a[p].z,(i-a[p].z)*o+a[p].z)),f.right&&(a[q].z=j(a[q].z,(i-a[q].z)*o+a[q].z));THREE.Terrain.Clamp(a,{maxHeight:b.maxHeight,minHeight:b.minHeight,stretch:!0})},THREE.Terrain.RadialEdges=function(a,b,c,d,e){var f=c?b.maxHeight:b.minHeight,g=c?Math.max:Math.min,h=b.xSegments+1,i=b.ySegments+1,j=.5*h,k=.5*i,l=b.xSize/b.xSegments,m=b.ySize/b.ySegments,n=.5*Math.min(b.xSize,b.ySize)-d,o,p,q,r,s;for(o=0;o<h;o++)for(p=0;p<k;p++)r=p*h+o,s=Math.min(n,Math.sqrt((j-o)*l*(j-o)*l+(k-p)*m*(k-p)*m)-d),s<0||(q=e(s/n),a[r].z=g(a[r].z,(f-a[r].z)*q+a[r].z),r=(b.ySegments-p)*h+o,a[r].z=g(a[r].z,(f-a[r].z)*q+a[r].z))},THREE.Terrain.Smooth=function(a,b,c){for(var d=new Float64Array(a.length),e=0,f=b.xSegments+1,g=b.ySegments+1;e<f;e++)for(var h=0;h<g;h++){for(var i=0,j=0,k=-1;k<=1;k++)for(var l=-1;l<=1;l++){var m=(h+k)*f+e+l;void 0!==a[m]&&e+l>=0&&h+k>=0&&e+l<f&&h+k<g&&(i+=a[m].z,j++)}d[h*f+e]=i/j}c=c||0;for(var n=1/(1+c),o=0,p=a.length;o<p;o++)a[o].z=(d[o]+a[o].z*c)*n},THREE.Terrain.SmoothMedian=function(a,b){for(var c=new Float64Array(a.length),d=[],e=[],f=function(a,b){return d[a]-d[b]},g=0,h=b.xSegments+1,i=b.ySegments+1;g<h;g++)for(var j=0;j<i;j++){d.length=0,e.length=0;for(var k=-1;k<=1;k++)for(var l=-1;l<=1;l++){var m=(j+k)*h+g+l;void 0!==a[m]&&g+l>=0&&j+k>=0&&g+l<h&&j+k<i&&(d.push(a[m].z),e.push(m))}e.sort(f);var n=Math.floor(.5*e.length),o;o=e.length%2==1?a[e[n]].z:.5*(a[e[n-1]].z+a[e[n]].z),c[j*h+g]=o}for(var p=0,q=a.length;p<q;p++)a[p].z=c[p]},THREE.Terrain.SmoothConservative=function(a,b,c){for(var d=new Float64Array(a.length),e=0,f=b.xSegments+1,g=b.ySegments+1;e<f;e++)for(var h=0;h<g;h++){for(var i=-1/0,j=1/0,k=-1;k<=1;k++)for(var l=-1;l<=1;l++){var m=(h+k)*f+e+l;void 0!==a[m]&&k&&l&&e+l>=0&&h+k>=0&&e+l<f&&h+k<g&&(a[m].z<j&&(j=a[m].z),a[m].z>i&&(i=a[m].z))}var n=h*f+e;if("number"==typeof c){var o=.5*(i-j),p=j+o;i=p+o*c,j=p-o*c}d[n]=a[n].z>i?i:a[n].z<j?j:a[n].z}for(var q=0,r=a.length;q<r;q++)a[q].z=d[q]},THREE.Terrain.Step=function(a,b){var c=0,d=0,e=a.length,f=Math.floor(e/b),g=new Array(e),h=new Array(b);for(void 0===b&&(b=Math.floor(Math.pow(.5*e,.25))),c=0;c<e;c++)g[c]=a[c].z;for(g.sort(function(a,b){return a-b}),c=0;c<b;c++){var i=g.slice(c*f,(c+1)*f),j=0,k=i.length;for(d=0;d<k;d++)j+=i[d];h[c]={min:i[0],max:i[i.length-1],avg:j/k}}for(c=0;c<e;c++){var l=a[c].z;for(d=0;d<b;d++)if(l>=h[d].min&&l<=h[d].max){a[c].z=h[d].avg;break}}},THREE.Terrain.Turbulence=function(a,b){for(var c=b.maxHeight-b.minHeight,d=0,e=a.length;d<e;d++)a[d].z=b.minHeight+Math.abs(2*(a[d].z-b.minHeight)-c)},THREE.Terrain.MultiPass=function(a,b,c){var d={};for(var e in b)b.hasOwnProperty(e)&&(d[e]=b[e]);for(var f=b.maxHeight-b.minHeight,g=0,h=c.length;g<h;g++){var i=void 0===c[g].amplitude?1:c[g].amplitude,j=.5*(f-f*i);d.maxHeight=b.maxHeight-j,d.minHeight=b.minHeight+j,d.frequency=void 0===c[g].frequency?b.frequency:c[g].frequency,c[g].method(a,d)}},THREE.Terrain.Curve=function(a,b,c){for(var d=.5*(b.maxHeight-b.minHeight),e=b.frequency/(Math.min(b.xSegments,b.ySegments)+1),f=0,g=b.xSegments+1,h=b.ySegments+1;f<g;f++)for(var i=0;i<h;i++)a[i*g+f].z+=c(f*e,i*e)*d},THREE.Terrain.Cosine=function(a,b){for(var c=.5*(b.maxHeight-b.minHeight),d=b.frequency*Math.PI/(Math.min(b.xSegments,b.ySegments)+1),e=Math.random()*Math.PI*2,f=0,g=b.xSegments+1;f<g;f++)for(var h=0,i=b.ySegments+1;h<i;h++)a[h*g+f].z+=c*(Math.cos(f*d+e)+Math.cos(h*d+e))},THREE.Terrain.CosineLayers=function(a,b){THREE.Terrain.MultiPass(a,b,[{method:THREE.Terrain.Cosine,frequency:2.5},{method:THREE.Terrain.Cosine,amplitude:.1,frequency:12},{method:THREE.Terrain.Cosine,amplitude:.05,frequency:15},{method:THREE.Terrain.Cosine,amplitude:.025,frequency:20}])},THREE.Terrain.DiamondSquare=function(a,b){var c=THREE.Math.ceilPowerOfTwo(Math.max(b.xSegments,b.ySegments)+1),d=c+1,e=[],f=b.maxHeight-b.minHeight,g,h,i=b.xSegments+1,j=b.ySegments+1;for(g=0;g<=c;g++)e[g]=new Float64Array(c+1);for(var k=c;k>=2;k/=2){var l=Math.round(.5*k),m=Math.round(k),n,o,p,q,r;for(f/=2,n=0;n<c;n+=m)for(o=0;o<c;o+=m)q=Math.random()*f*2-f,p=e[n][o]+e[n+m][o]+e[n][o+m]+e[n+m][o+m],p*=.25,e[n+l][o+l]=p+q;for(n=0;n<c;n+=l)for(o=(n+l)%k;o<c;o+=k)q=Math.random()*f*2-f,p=e[(n-l+d)%d][o]+e[(n+l)%d][o]+e[n][(o+l)%d]+e[n][(o-l+d)%d],p*=.25,p+=q,e[n][o]=p,0===n&&(e[c][o]=p),0===o&&(e[n][c]=p)}for(g=0;g<i;g++)for(h=0;h<j;h++)a[h*i+g].z+=e[g][h]},THREE.Terrain.Fault=function(a,b){for(var c=Math.sqrt(b.xSegments*b.xSegments+b.ySegments*b.ySegments),d=c*b.frequency,e=.5*(b.maxHeight-b.minHeight),f=e/d,g=Math.min(b.xSize/b.xSegments,b.ySize/b.ySegments)*b.frequency,h=0;h<d;h++)for(var i=Math.random(),j=Math.sin(i*Math.PI*2),k=Math.cos(i*Math.PI*2),l=Math.random()*c-.5*c,m=0,n=b.xSegments+1;m<n;m++)for(var o=0,p=b.ySegments+1;o<p;o++){var q=j*m+k*o-l;q>g?a[o*n+m].z+=f:q<-g?a[o*n+m].z-=f:a[o*n+m].z+=Math.cos(q/g*Math.PI*2)*f}},THREE.Terrain.Hill=function(a,b,c,d){var e=2*b.frequency,f=e*e*10,g=b.maxHeight-b.minHeight,h=g/(e*e),i=g/e,j=Math.min(b.xSize,b.ySize),k=j/(e*e),l=j/e;c=c||THREE.Terrain.Influences.Hill;for(var m={x:0,y:0},n=0;n<f;n++){var o=Math.random()*(l-k)+k,p=Math.random()*(i-h)+h,q=0-o,r=b.xSize+o,s=b.ySize+o;m.x=Math.random(),m.y=Math.random(),"function"==typeof d&&d(m),THREE.Terrain.Influence(a,b,c,m.x,m.y,o,p,THREE.AdditiveBlending,THREE.Terrain.EaseInStrong)}},THREE.Terrain.HillIsland=function(){var a=function(a){var b=Math.random()*Math.PI*2;a.x=.5+Math.cos(b)*a.x*.4,a.y=.5+Math.sin(b)*a.y*.4};return function(b,c,d){THREE.Terrain.Hill(b,c,d,a)}}(),function(){function a(b,c,d,e,f){for(var g=d*e+c,h=0;h<3;h++){switch(Math.floor(8*Math.random())){case 0:c++;break;case 1:c--;break;case 2:d++;break;case 3:d--;break;case 4:c++,d++;break;case 5:c++,d--;break;case 6:c--,d++;break;case 7:c--,d--;break}var i=d*e+c;if(void 0!==b[i]){if(b[i].z<b[g].z)return a(b,c,d,e,f),void 0}else if(Math.random()<.2)return b[g].z+=f,void 0}b[g].z+=f}THREE.Terrain.Particles=function(b,c){for(var d=Math.sqrt(c.xSegments*c.xSegments+c.ySegments*c.ySegments)*c.frequency*300,e=c.xSegments+1,f=(c.maxHeight-c.minHeight)/d*1e3,g=Math.floor(Math.random()*c.xSegments),h=Math.floor(Math.random()*c.ySegments),i=.2*Math.random()-.1,j=.2*Math.random()-.1,k=0;k<d;k++){a(b,g,h,e,f);var l=Math.random()*Math.PI*2;k%1e3==0&&(i=.2*Math.random()-.1,j=.2*Math.random()-.1),k%100==0&&(g=Math.floor(c.xSegments*(.5+i)+Math.cos(l)*Math.random()*c.xSegments*(.5-Math.abs(i))),h=Math.floor(c.ySegments*(.5+j)+Math.sin(l)*Math.random()*c.ySegments*(.5-Math.abs(j))))}}}(),THREE.Terrain.Perlin=function(a,b){noise.seed(Math.random());for(var c=.5*(b.maxHeight-b.minHeight),d=(Math.min(b.xSegments,b.ySegments)+1)/b.frequency,e=0,f=b.xSegments+1;e<f;e++)for(var g=0,h=b.ySegments+1;g<h;g++)a[g*f+e].z+=noise.perlin(e/d,g/d)*c},THREE.Terrain.PerlinDiamond=function(a,b){THREE.Terrain.MultiPass(a,b,[{method:THREE.Terrain.Perlin},{method:THREE.Terrain.DiamondSquare,amplitude:.75},{method:function(a,b){return THREE.Terrain.SmoothMedian(a,b)}}])},THREE.Terrain.PerlinLayers=function(a,b){THREE.Terrain.MultiPass(a,b,[{method:THREE.Terrain.Perlin,frequency:1.25},{method:THREE.Terrain.Perlin,amplitude:.05,frequency:2.5},{method:THREE.Terrain.Perlin,amplitude:.35,frequency:5},{method:THREE.Terrain.Perlin,amplitude:.15,frequency:10}])},THREE.Terrain.Simplex=function(a,b){noise.seed(Math.random());for(var c=.5*(b.maxHeight-b.minHeight),d=2*(Math.min(b.xSegments,b.ySegments)+1)/b.frequency,e=0,f=b.xSegments+1;e<f;e++)for(var g=0,h=b.ySegments+1;g<h;g++)a[g*f+e].z+=noise.simplex(e/d,g/d)*c},THREE.Terrain.SimplexLayers=function(a,b){THREE.Terrain.MultiPass(a,b,[{method:THREE.Terrain.Simplex,frequency:1.25},{method:THREE.Terrain.Simplex,amplitude:.5,frequency:2.5},{method:THREE.Terrain.Simplex,amplitude:.25,frequency:5},{method:THREE.Terrain.Simplex,amplitude:.125,frequency:10},{method:THREE.Terrain.Simplex,amplitude:.0625,frequency:20}])},function(){function a(a,b,c,d,e,f){if(!(c>d)){var g=0,h=0,i=d,j=d,k=Math.floor(d/c),l=-k,m=-k;for(g=0;g<=i;g+=k){for(h=0;h<=j;h+=k){var n=h*i+g;if(f[n]=Math.random()*e,!(l<0&&m<0)){for(var o=f[n],p=f[h*i+(g-k)]||o,q=f[(h-k)*i+g]||o,r=f[(h-k)*i+(g-k)]||o,s=l;s<g;s++)for(var t=m;t<h;t++)if(s!==l||t!==m){var u=t*i+s;if(!(u<0)){var v=(s-l)/k,w=(t-m)/k,x=v*q+(1-v)*r,y=v*o+(1-v)*p;f[u]=w*y+(1-w)*x}}m=h}}l=g,m=-k}for(g=0,i=b.xSegments+1;g<i;g++)for(h=0,j=b.ySegments+1;h<j;h++){var z=h*i+g,A=h*d+g;a[z].z+=f[A]}}}THREE.Terrain.Value=function(b,c){for(var d=THREE.Math.ceilPowerOfTwo(Math.max(c.xSegments,c.ySegments)+1),e=new Float64Array((d+1)*(d+1)),f=c.maxHeight-c.minHeight,g=2;g<7;g++)a(b,c,Math.pow(2,g),d,f*Math.pow(2,2.4-1.2*g),e);THREE.Terrain.Clamp(b,{maxHeight:c.maxHeight,minHeight:c.minHeight,stretch:!0})}}(),THREE.Terrain.Weierstrass=function(a,b){for(var c=.5*(b.maxHeight-b.minHeight),d=Math.random()<.5?1:-1,e=Math.random()<.5?1:-1,f=.5+1*Math.random(),g=.5+1*Math.random(),h=.025+.1*Math.random(),i=2*Math.random()-1,j=.5+1*Math.random(),k=.5+1*Math.random(),l=.025+.1*Math.random(),m=2*Math.random()-1,n=0,o=b.xSegments+1;n<o;n++)for(var p=0,q=b.ySegments+1;p<q;p++){for(var r=0,s=0;s<20;s++){var t=Math.pow(1+f,-s)*Math.sin(Math.pow(1+g,s)*(n+.25*Math.cos(p)+i*p)*h),u=Math.pow(1+j,-s)*Math.sin(Math.pow(1+k,s)*(p+.25*Math.cos(n)+m*n)*l);r-=Math.exp(d*t*t+e*u*u)}a[p*o+n].z+=r*c}THREE.Terrain.Clamp(a,b)},THREE.Terrain.generateBlendedMaterial=function(a){function b(a){return a===(0|a)?a+".0":a+""}for(var c="",d="",e=a[0].texture.repeat,f=a[0].texture.offset,g=0,h=a.length;g<h;g++)if(a[g].texture.wrapS=a[g].wrapT=THREE.RepeatWrapping,a[g].texture.needsUpdate=!0,c+="uniform sampler2D texture_"+g+";\n",0!==g){var i=a[g].levels,j=a[g].glsl,k=void 0!==i,l=a[g].texture.repeat,m=a[g].texture.offset;if(k){i[1]-i[0]<1&&(i[0]-=1),i[3]-i[2]<1&&(i[3]+=1);for(var n=0;n<i.length;n++)i[n]=b(i[n])}var o=k?"1.0 - smoothstep("+i[0]+", "+i[1]+", vPosition.z) + smoothstep("+i[2]+", "+i[3]+", vPosition.z)":j;d+="        color = mix( texture2D( texture_"+g+", MyvUv * vec2( "+b(l.x)+", "+b(l.y)+" ) + vec2( "+b(m.x)+", "+b(m.y)+" ) ), color, max(min("+o+", 1.0), 0.0));\n"}var p="float slope = acos(max(min(dot(myNormal, vec3(0.0, 0.0, 1.0)), 1.0), -1.0));\n    diffuseColor = vec4( diffuse, opacity );\n    vec4 color = texture2D( texture_0, MyvUv * vec2( "+b(e.x)+", "+b(e.y)+" ) + vec2( "+b(f.x)+", "+b(f.y)+" ) ); // base\n"+d+"    diffuseColor = color;\n",q=c+"\nvarying vec2 MyvUv;\nvarying vec3 vPosition;\nvarying vec3 myNormal;\n",r=new THREE.MeshLambertMaterial;return r.onBeforeCompile=function(b){b.vertexShader=b.vertexShader.replace("#include <common>","varying vec2 MyvUv;\nvarying vec3 vPosition;\nvarying vec3 myNormal;\n#include <common>"),b.vertexShader=b.vertexShader.replace("#include <uv_vertex>","MyvUv = uv;\nvPosition = position;\nmyNormal = normal;\n#include <uv_vertex>"),b.fragmentShader=b.fragmentShader.replace("#include <common>",q+"\n#include <common>"),b.fragmentShader=b.fragmentShader.replace("#include <map_fragment>",p);for(var c=0,d=a.length;c<d;c++)b.uniforms["texture_"+c]={type:"t",value:a[c].texture}},r},THREE.Terrain.ScatterMeshes=function(a,b){if(!b.mesh)return console.error("options.mesh is required for THREE.Terrain.ScatterMeshes but was not passed"),void 0;if(a instanceof THREE.BufferGeometry)return console.warn("The terrain mesh is using BufferGeometry but THREE.Terrain.ScatterMeshes can only work with Geometry."),void 0;b.scene||(b.scene=new THREE.Object3D);var c={spread:.025,smoothSpread:0,sizeVariance:.1,randomness:Math.random,maxSlope:.6283185307179586,maxTilt:1/0,w:0,h:0};for(var d in c)c.hasOwnProperty(d)&&(b[d]=void 0===b[d]?c[d]:b[d]);var e="number"==typeof b.spread,f,g,h=1/b.smoothSpread,i=2*b.sizeVariance,j=a.vertices,k=[],l=b.mesh.up.clone().applyAxisAngle(new THREE.Vector3(1,0,0),.5*Math.PI);e&&(f=b.randomness(),g="number"==typeof f?Math.random:function(a){return f[a]});for(var m=0,n=2*b.w;m<n;m++)for(var o=0,p=b.h;o<p;o++){var q=o*n+m,r=a.faces[q],s=!1;if(e){var t=g(q);t<b.spread?s=!0:t<b.spread+b.smoothSpread&&(s=THREE.Terrain.EaseInOut((t-b.spread)*h)*b.spread>Math.random())}else s=b.spread(j[r.a],q,r,m,o);if(s){if(r.normal.angleTo(l)>b.maxSlope)continue;var u=b.mesh.clone();if(u.position.copy(j[r.a]).add(j[r.b]).add(j[r.c]).divideScalar(3),b.maxTilt>0){var v=u.position.clone().add(r.normal);u.lookAt(v);var w=r.normal.angleTo(l);if(w>b.maxTilt){var x=b.maxTilt/w;u.rotation.x*=x,u.rotation.y*=x,u.rotation.z*=x}}if(u.rotation.x+=.5*Math.PI,u.rotateY(2*Math.random()*Math.PI),b.sizeVariance){var y=Math.random()*i-b.sizeVariance;u.scale.x=u.scale.z=1+y,u.scale.y+=y}k.push(u)}}var z,A;if(b.mesh.geometry instanceof THREE.Geometry){var B=new THREE.Geometry;for(z=0,A=k.length;z<A;z++){var C=k[z];C.updateMatrix(),B.merge(C.geometry,C.matrix)}b.scene.add(new THREE.Mesh(B,b.mesh.material))}else for(z=0,A=k.length;z<A;z++)b.scene.add(k[z]);return b.scene},THREE.Terrain.ScatterHelper=function(a,b,c,d){c=c||1,d=d||.25,b.frequency=b.frequency||2.5;var e={};for(var f in b)b.hasOwnProperty(f)&&(e[f]=b[f]);e.xSegments*=2,e.stretch=!0,e.maxHeight=1,e.minHeight=0;for(var g=THREE.Terrain.heightmapArray(a,e),h=0,i=g.length;h<i;h++)(h%c||Math.random()>d)&&(g[h]=1);return function(){return g}},THREE.Terrain.Influences={Mesa:function(a){return 1.25*Math.min(.8,Math.exp(-a*a))},Hole:function(a){return-THREE.Terrain.Influences.Mesa(a)},Hill:function(a){return a<0?(a+1)*(a+1)*(3-2*(a+1)):1-a*a*(3-2*a)},Valley:function(a){return-THREE.Terrain.Influences.Hill(a)},Dome:function(a){return-(a+1)*(a-1)},Flat:function(a){return 0},Volcano:function(a){return.94-.32*(Math.abs(2*a)+Math.cos(2*Math.PI*Math.abs(a)+.4))}},THREE.Terrain.Influence=function(a,b,c,d,e,f,g,h,i){c=c||THREE.Terrain.Influences.Hill,d=void 0===d?.5:d,e=void 0===e?.5:e,f=void 0===f?64:f,g=void 0===g?64:g,h=void 0===h?THREE.NormalBlending:h,i=i||THREE.Terrain.EaseIn;for(var j=b.xSegments+1,k=b.ySegments+1,l=j*d,m=k*e,n=b.xSize/b.xSegments,o=b.ySize/b.ySegments,p=f/n,q=f/o,r=1/f,s=Math.ceil(l-p),t=Math.floor(l+p),u=Math.ceil(m-q),v=Math.floor(m+q),w=s;w<t;w++)for(var x=u;x<v;x++){var y=x*j+w,z=(w-l)*n,A=(x-m)*o,B=Math.sqrt(z*z+A*A),C=B*r,D=z*r,E=A*r,F=c(C,D,E)*g*(1-i(C,D,E));B>f||void 0===a[y]||(h===THREE.AdditiveBlending?a[y].z+=F:h===THREE.SubtractiveBlending?a[y].z-=F:h===THREE.MultiplyBlending?a[y].z*=F:h===THREE.NoBlending?a[y].z=F:h===THREE.NormalBlending?a[y].z=i(C,D,E)*a[y].z+F:"function"==typeof h&&(a[y].z=h(a[y].z,F,C,D,E)))}};
+!function(e){var e=e.noise={};function r(e,r,n){this.x=e,this.y=r,this.z=n}r.prototype.dot2=function(e,r){return this.x*e+this.y*r},r.prototype.dot3=function(e,r,n){return this.x*e+this.y*r+this.z*n};var t=[new r(1,1,0),new r(-1,1,0),new r(1,-1,0),new r(-1,-1,0),new r(1,0,1),new r(-1,0,1),new r(1,0,-1),new r(-1,0,-1),new r(0,1,1),new r(0,-1,1),new r(0,1,-1),new r(0,-1,-1)],a=[151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,23,190,6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,174,20,125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,102,143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,89,18,169,200,196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,250,124,123,5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,223,183,170,213,119,248,152,2,44,154,163,70,221,153,101,155,167,43,172,9,129,22,39,253,19,98,108,110,79,113,224,232,178,185,112,104,218,246,97,228,251,34,242,193,238,210,144,12,191,179,162,241,81,51,145,235,249,14,239,107,49,192,214,31,181,199,106,157,184,84,204,176,115,121,50,45,127,4,150,254,138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180],l=new Array(512),c=new Array(512);e.seed=function(e){0<e&&e<1&&(e*=65536),(e=Math.floor(e))<256&&(e|=e<<8);for(var r=0;r<256;r++){var n,n=1&r?a[r]^255&e:a[r]^e>>8&255;l[r]=l[r+256]=n,c[r]=c[r+256]=t[n%12]}},e.seed(Math.random());var d=.5*(Math.sqrt(3)-1),H=(3-Math.sqrt(3))/6,n=1/3,i=1/6;function m(e){return e*e*e*(e*(6*e-15)+10)}function h(e,r,n){return(1-n)*e+n*r}e.simplex=function(e,r){var n,t,a,i=(e+r)*d,o=Math.floor(e+i),m=Math.floor(r+i),h=(o+m)*H,s=e-o+h,f=r-m+h,E,u,u=f<s?(E=1,0):(E=0,1),g=s-E+H,T=f-u+H,i=s-1+2*H,e=f-1+2*H,r=c[(o&=255)+l[m&=255]],h=c[o+E+l[m+u]],E=c[1+o+l[1+m]],u=.5-s*s-f*f,n,o=.5-g*g-T*T,t,m=.5-i*i-e*e,a;return 70*((n=u<0?0:(u*=u)*u*r.dot2(s,f))+(t=o<0?0:(o*=o)*o*h.dot2(g,T))+(a=m<0?0:(m*=m)*m*E.dot2(i,e)))},e.perlin=function(e,r){var n=Math.floor(e),t=Math.floor(r);e-=n,r-=t;var a=c[(n&=255)+l[t&=255]].dot2(e,r),i=c[n+l[1+t]].dot2(e,r-1),o=c[1+n+l[t]].dot2(e-1,r),t=c[1+n+l[1+t]].dot2(e-1,r-1),e=m(e);return h(h(a,o,e),h(i,t,e),m(r))}}(this),THREE.Terrain=function(e){var r={after:null,easing:THREE.Terrain.Linear,heightmap:THREE.Terrain.DiamondSquare,material:null,maxHeight:100,minHeight:-100,optimization:THREE.Terrain.NONE,frequency:2.5,steps:1,stretch:!0,turbulent:!1,xSegments:63,xSize:1024,ySegments:63,ySize:1024},n;for(n in e=e||{},r)r.hasOwnProperty(n)&&(e[n]=(void 0===e[n]?r:e)[n]);e.material=e.material||new THREE.MeshBasicMaterial({color:15623731});var t=new THREE.Object3D;t.rotation.x=-.5*Math.PI;var a=new THREE.Mesh(new THREE.PlaneGeometry(e.xSize,e.ySize,e.xSegments,e.ySegments),e.material),i=THREE.Terrain.toArray1D(a.geometry.attributes.position.array);return e.heightmap instanceof HTMLCanvasElement||e.heightmap instanceof Image?THREE.Terrain.fromHeightmap(i,e):"function"==typeof e.heightmap?e.heightmap(i,e):console.warn("An invalid value was passed for `options.heightmap`: "+e.heightmap),THREE.Terrain.fromArray1D(a.geometry.attributes.position.array,i),THREE.Terrain.Normalize(a,e),t.add(a),t},THREE.Terrain.Normalize=function(e,r){var n=THREE.Terrain.toArray1D(e.geometry.attributes.position.array);r.turbulent&&THREE.Terrain.Turbulence(n,r),1<r.steps&&(THREE.Terrain.Step(n,r.steps),THREE.Terrain.Smooth(n,r)),THREE.Terrain.Clamp(n,r),"function"==typeof r.after&&r.after(n,r),THREE.Terrain.fromArray1D(e.geometry.attributes.position.array,n),e.geometry.computeBoundingSphere(),e.geometry.computeFaceNormals(),e.geometry.computeVertexNormals()},THREE.Terrain.NONE=0,THREE.Terrain.GEOMIPMAP=1,THREE.Terrain.GEOCLIPMAP=2,THREE.Terrain.POLYGONREDUCTION=3,THREE.Terrain.toArray2D=function(e,r){for(var n=new Array(r.xSegments+1),t=r.xSegments+1,a=r.ySegments+1,i,o,i=0;i<t;i++)for(n[i]=new Float32Array(r.ySegments+1),o=0;o<a;o++)n[i][o]=e[o*t+i];return n},THREE.Terrain.fromArray2D=function(e,r){for(var n=0,t=r.length;n<t;n++)for(var a=0,i=r[n].length;a<i;a++)e[a*t+n]=r[n][a]},THREE.Terrain.toArray1D=function(e){for(var r=new Float32Array(e.length/3),n=0,t=r.length;n<t;n++)r[n]=e[3*n+2];return r},THREE.Terrain.fromArray1D=function(e,r){for(var n=0,t=Math.min(e.length/3,r.length);n<t;n++)e[3*n+2]=r[n]},THREE.Terrain.heightmapArray=function(e,r){var n=new Array((r.xSegments+1)*(r.ySegments+1)),t=n.length,a;return n.fill(0),r.minHeight=r.minHeight||0,r.maxHeight=void 0===r.maxHeight?1:r.maxHeight,r.stretch=r.stretch||!1,e(n,r),THREE.Terrain.Clamp(n,r),n},THREE.Terrain.Linear=function(e){return e},THREE.Terrain.EaseIn=function(e){return e*e},THREE.Terrain.EaseOut=function(e){return-e*(e-2)},THREE.Terrain.EaseInOut=function(e){return e*e*(3-2*e)},THREE.Terrain.InEaseOut=function(e){var e=2*e-1;return.5*e*e*e+.5},THREE.Terrain.EaseInWeak=function(e){return Math.pow(e,1.55)},THREE.Terrain.EaseInStrong=function(e){return e*e*e*e*e*e*e},THREE.Terrain.fromHeightmap=function(e,r){var n=document.createElement("canvas"),t=n.getContext("2d"),a=r.ySegments+1,i=r.xSegments+1,o=r.maxHeight-r.minHeight;n.width=i,n.height=a,t.drawImage(r.heightmap,0,0,n.width,n.height);for(var m=t.getImageData(0,0,n.width,n.height).data,h=0;h<a;h++)for(var s=0;s<i;s++){var f=h*i+s,E=4*f;e[f]=(m[E]+m[1+E]+m[2+E])/765*o+r.minHeight}},THREE.Terrain.toHeightmap=function(e,r){var n=void 0!==r.maxHeight,t=void 0!==r.minHeight,a=n?r.maxHeight:-1/0,i=t?r.minHeight:1/0;if(!n||!t){for(var o=a,m=i,h=2,s=e.length;h<s;h+=3)e[h]>o&&(o=e[h]),e[h]<m&&(m=e[h]);n||(a=o),t||(i=m)}var n=r.heightmap instanceof HTMLCanvasElement?r.heightmap:document.createElement("canvas"),t=n.getContext("2d"),f=r.ySegments+1,E=r.xSegments+1,u=a-i;n.width=E,n.height=f;for(var a=t.createImageData(n.width,n.height),g=a.data,T=0;T<f;T++)for(var l=0;l<E;l++){var c=T*E+l,d=4*c;g[d]=g[1+d]=g[2+d]=Math.round((e[3*c+2]-i)/u*255),g[3+d]=255}return t.putImageData(a,0,0),n},THREE.Terrain.Clamp=function(e,r){var n=1/0,t=-1/0,a=e.length,i;for(r.easing=r.easing||THREE.Terrain.Linear,i=0;i<a;i++)e[i]<n&&(n=e[i]),e[i]>t&&(t=e[i]);var o=t-n,m="number"!=typeof r.maxHeight?t:r.maxHeight,h="number"!=typeof r.minHeight?n:r.minHeight,s=!r.stretch&&t<m?t:m,f=!r.stretch&&h<n?n:h,E=s-f;for(s<f&&(E=(s=m)-f),i=0;i<a;i++)e[i]=r.easing((e[i]-n)/o)*E+h},THREE.Terrain.Edges=function(e,r,n,t,a,i){var o=Math.floor(t/(r.xSize/r.xSegments))||1,m=Math.floor(t/(r.ySize/r.ySegments))||1,h=n?r.maxHeight:r.minHeight,s=n?Math.max:Math.min,f=r.xSegments+1,E=r.ySegments+1,u,g,T,l,c;for(a=a||THREE.Terrain.EaseInOut,"object"!=typeof i&&(i={top:!0,bottom:!0,left:!0,right:!0}),u=0;u<f;u++)for(g=0;g<m;g++)T=a(1-g/m),l=g*f+u,c=(r.ySegments-g)*f+u,i.top&&(e[l]=s(e[l],(h-e[l])*T+e[l])),i.bottom&&(e[c]=s(e[c],(h-e[c])*T+e[c]));for(u=0;u<E;u++)for(g=0;g<o;g++)T=a(1-g/o),l=u*f+g,c=(r.ySegments-u)*f+(r.xSegments-g),i.left&&(e[l]=s(e[l],(h-e[l])*T+e[l])),i.right&&(e[c]=s(e[c],(h-e[c])*T+e[c]));THREE.Terrain.Clamp(e,{maxHeight:r.maxHeight,minHeight:r.minHeight,stretch:!0})},THREE.Terrain.RadialEdges=function(e,r,n,t,a){for(var i=n?r.maxHeight:r.minHeight,o=n?Math.max:Math.min,m=r.xSegments+1,h,s=.5*m,f=.5*(r.ySegments+1),E=r.xSize/r.xSegments,u=r.ySize/r.ySegments,g=.5*Math.min(r.xSize,r.ySize)-t,T,l,c,d,c,T=0;T<m;T++)for(l=0;l<f;l++)d=l*m+T,(c=Math.min(g,Math.sqrt((s-T)*E*(s-T)*E+(f-l)*u*(f-l)*u)-t))<0||(c=a(c/g),e[d]=o(e[d],(i-e[d])*c+e[d]),e[d=(r.ySegments-l)*m+T]=o(e[d],(i-e[d])*c+e[d]))},THREE.Terrain.Smooth=function(e,r,n){for(var t=new Float32Array(e.length),a=0,i=r.xSegments+1,o=r.ySegments+1;a<i;a++)for(var m=0;m<o;m++){for(var h=0,s=0,f=-1;f<=1;f++)for(var E=-1;E<=1;E++){var u=(m+f)*i+a+E;void 0!==e[u]&&0<=a+E&&0<=m+f&&a+E<i&&m+f<o&&(h+=e[u],s++)}t[m*i+a]=h/s}for(var g=1/(1+(n=n||0)),T=0,l=e.length;T<l;T++)e[T]=(t[T]+e[T]*n)*g},THREE.Terrain.SmoothMedian=function(e,r){for(var n=new Float32Array(e.length),t=[],a=[],i=function(e,r){return t[e]-t[r]},o=0,m=r.xSegments+1,h=r.ySegments+1;o<m;o++)for(var s=0;s<h;s++){t.length=0,a.length=0;for(var f=-1;f<=1;f++)for(var E=-1;E<=1;E++){var u=(s+f)*m+o+E;void 0!==e[u]&&0<=o+E&&0<=s+f&&o+E<m&&s+f<h&&(t.push(e[u]),a.push(u))}a.sort(i);var g=Math.floor(.5*a.length),g,g=a.length%2==1?e[a[g]]:.5*(e[a[g-1]]+e[a[g]]);n[s*m+o]=g}for(var T=0,l=e.length;T<l;T++)e[T]=n[T]},THREE.Terrain.SmoothConservative=function(e,r,n){for(var t=new Float32Array(e.length),a=0,i=r.xSegments+1,o=r.ySegments+1;a<i;a++)for(var m=0;m<o;m++){for(var h=-1/0,s=1/0,f=-1;f<=1;f++)for(var E=-1;E<=1;E++){var u=(m+f)*i+a+E;void 0!==e[u]&&f&&E&&0<=a+E&&0<=m+f&&a+E<i&&m+f<o&&(e[u]<s&&(s=e[u]),e[u]>h&&(h=e[u]))}var g=m*i+a,T,l,h,s;"number"==typeof n&&(h=(l=s+(T=.5*(h-s)))+T*n,s=l-T*n),t[g]=e[g]>h?h:e[g]<s?s:e[g]}for(var c=0,d=e.length;c<d;c++)e[c]=t[c]},THREE.Terrain.Step=function(e,r){var n=0,t=0,a=e.length,i=Math.floor(a/r),o=new Array(a),m=new Array(r);for(void 0===r&&(r=Math.floor(Math.pow(.5*a,.25))),n=0;n<a;n++)o[n]=e[n];for(o.sort(function(e,r){return e-r}),n=0;n<r;n++){for(var h=o.slice(n*i,(n+1)*i),s=0,f=h.length,t=0;t<f;t++)s+=h[t];m[n]={min:h[0],max:h[h.length-1],avg:s/f}}for(n=0;n<a;n++){var E=e[n];for(t=0;t<r;t++)if(E>=m[t].min&&E<=m[t].max){e[n]=m[t].avg;break}}},THREE.Terrain.Turbulence=function(e,r){for(var n=r.maxHeight-r.minHeight,t=0,a=e.length;t<a;t++)e[t]=r.minHeight+Math.abs(2*(e[t]-r.minHeight)-n)},THREE.Terrain.MultiPass=function(e,r,n){var t={},a;for(a in r)r.hasOwnProperty(a)&&(t[a]=r[a]);for(var i=r.maxHeight-r.minHeight,o=0,m=n.length;o<m;o++){var h,s=.5*(i-i*(void 0===n[o].amplitude?1:n[o].amplitude));t.maxHeight=r.maxHeight-s,t.minHeight=r.minHeight+s,t.frequency=(void 0===n[o].frequency?r:n[o]).frequency,n[o].method(e,t)}},THREE.Terrain.Curve=function(e,r,n){for(var t=.5*(r.maxHeight-r.minHeight),a=r.frequency/(Math.min(r.xSegments,r.ySegments)+1),i=0,o=r.xSegments+1,m=r.ySegments+1;i<o;i++)for(var h=0;h<m;h++)e[h*o+i]+=n(i*a,h*a)*t},THREE.Terrain.Cosine=function(e,r){for(var n=.5*(r.maxHeight-r.minHeight),t=r.frequency*Math.PI/(Math.min(r.xSegments,r.ySegments)+1),a=Math.random()*Math.PI*2,i=0,o=r.xSegments+1;i<o;i++)for(var m=0,h=r.ySegments+1;m<h;m++)e[m*o+i]+=n*(Math.cos(i*t+a)+Math.cos(m*t+a))},THREE.Terrain.CosineLayers=function(e,r){THREE.Terrain.MultiPass(e,r,[{method:THREE.Terrain.Cosine,frequency:2.5},{method:THREE.Terrain.Cosine,amplitude:.1,frequency:12},{method:THREE.Terrain.Cosine,amplitude:.05,frequency:15},{method:THREE.Terrain.Cosine,amplitude:.025,frequency:20}])},THREE.Terrain.DiamondSquare=function(e,r){for(var n=THREE.Math.ceilPowerOfTwo(Math.max(r.xSegments,r.ySegments)+1),t=n+1,a=[],i=r.maxHeight-r.minHeight,o,m,h=r.xSegments+1,s=r.ySegments+1,o=0;o<=n;o++)a[o]=new Float64Array(n+1);for(var f=n;2<=f;f/=2){var E=Math.round(.5*f),u=Math.round(f),g,T,l,c,d;for(i/=2,g=0;g<n;g+=u)for(T=0;T<n;T+=u)c=Math.random()*i*2-i,l=a[g][T]+a[g+u][T]+a[g][T+u]+a[g+u][T+u],l*=.25,a[g+E][T+E]=l+c;for(g=0;g<n;g+=E)for(T=(g+E)%f;T<n;T+=f)c=Math.random()*i*2-i,l=a[(g-E+t)%t][T]+a[(g+E)%t][T]+a[g][(T+E)%t]+a[g][(T-E+t)%t],l*=.25,l+=c,a[g][T]=l,0===g&&(a[n][T]=l),0===T&&(a[g][n]=l)}for(o=0;o<h;o++)for(m=0;m<s;m++)e[m*h+o]+=a[o][m]},THREE.Terrain.Fault=function(e,r){for(var n=Math.sqrt(r.xSegments*r.xSegments+r.ySegments*r.ySegments),t=n*r.frequency,a,i=.5*(r.maxHeight-r.minHeight)/t,o=Math.min(r.xSize/r.xSegments,r.ySize/r.ySegments)*r.frequency,m=0;m<t;m++)for(var h=Math.random(),s=Math.sin(h*Math.PI*2),f=Math.cos(h*Math.PI*2),E=Math.random()*n-.5*n,u=0,g=r.xSegments+1;u<g;u++)for(var T=0,l=r.ySegments+1;T<l;T++){var c=s*u+f*T-E;o<c?e[T*g+u]+=i:c<-o?e[T*g+u]-=i:e[T*g+u]+=Math.cos(c/o*Math.PI*2)*i}},THREE.Terrain.Hill=function(e,r,n,t){var a=2*r.frequency,i=a*a*10,o=r.maxHeight-r.minHeight,m=o/(a*a),h=o/a,o=Math.min(r.xSize,r.ySize),s=o/(a*a),f=o/a;n=n||THREE.Terrain.Influences.Hill;for(var E={x:0,y:0},u=0;u<i;u++){var g=Math.random()*(f-s)+s,T=Math.random()*(h-m)+m,l=0-g,c=r.xSize+g,d=r.ySize+g;E.x=Math.random(),E.y=Math.random(),"function"==typeof t&&t(E),THREE.Terrain.Influence(e,r,n,E.x,E.y,g,T,THREE.AdditiveBlending,THREE.Terrain.EaseInStrong)}},THREE.Terrain.HillIsland=function(){var t=function(e){var r=Math.random()*Math.PI*2;e.x=.5+Math.cos(r)*e.x*.4,e.y=.5+Math.sin(r)*e.y*.4};return function(e,r,n){THREE.Terrain.Hill(e,r,n,t)}}(),function(){function E(e,r,n,t,a){for(var i=n*t+r,o=0,m;o<3;o++){switch(Math.floor(8*Math.random())){case 0:r++;break;case 1:r--;break;case 2:n++;break;case 3:n--;break;case 4:r++,n++;break;case 5:r++,n--;break;case 6:r--,n++;break;case 7:r--,n--;break}var h=n*t+r;if(void 0!==e[h]){if(e[h]<e[i])return E(e,r,n,t,a),undefined}else if(Math.random()<.2)return e[i]+=a,undefined}e[i]+=a}THREE.Terrain.Particles=function(e,r){for(var n=Math.sqrt(r.xSegments*r.xSegments+r.ySegments*r.ySegments)*r.frequency*300,t=r.xSegments+1,a=(r.maxHeight-r.minHeight)/n*1e3,i=Math.floor(Math.random()*r.xSegments),o=Math.floor(Math.random()*r.ySegments),m=.2*Math.random()-.1,h=.2*Math.random()-.1,s=0;s<n;s++){E(e,i,o,t,a);var f=Math.random()*Math.PI*2;s%1e3==0&&(m=.2*Math.random()-.1,h=.2*Math.random()-.1),s%100==0&&(i=Math.floor(r.xSegments*(.5+m)+Math.cos(f)*Math.random()*r.xSegments*(.5-Math.abs(m))),o=Math.floor(r.ySegments*(.5+h)+Math.sin(f)*Math.random()*r.ySegments*(.5-Math.abs(h))))}}}(),THREE.Terrain.Perlin=function(e,r){noise.seed(Math.random());for(var n=.5*(r.maxHeight-r.minHeight),t=(Math.min(r.xSegments,r.ySegments)+1)/r.frequency,a=0,i=r.xSegments+1;a<i;a++)for(var o=0,m=r.ySegments+1;o<m;o++)e[o*i+a]+=noise.perlin(a/t,o/t)*n},THREE.Terrain.PerlinDiamond=function(e,r){THREE.Terrain.MultiPass(e,r,[{method:THREE.Terrain.Perlin},{method:THREE.Terrain.DiamondSquare,amplitude:.75},{method:function(e,r){return THREE.Terrain.SmoothMedian(e,r)}}])},THREE.Terrain.PerlinLayers=function(e,r){THREE.Terrain.MultiPass(e,r,[{method:THREE.Terrain.Perlin,frequency:1.25},{method:THREE.Terrain.Perlin,amplitude:.05,frequency:2.5},{method:THREE.Terrain.Perlin,amplitude:.35,frequency:5},{method:THREE.Terrain.Perlin,amplitude:.15,frequency:10}])},THREE.Terrain.Simplex=function(e,r){noise.seed(Math.random());for(var n=.5*(r.maxHeight-r.minHeight),t=2*(Math.min(r.xSegments,r.ySegments)+1)/r.frequency,a=0,i=r.xSegments+1;a<i;a++)for(var o=0,m=r.ySegments+1;o<m;o++)e[o*i+a]+=noise.simplex(a/t,o/t)*n},THREE.Terrain.SimplexLayers=function(e,r){THREE.Terrain.MultiPass(e,r,[{method:THREE.Terrain.Simplex,frequency:1.25},{method:THREE.Terrain.Simplex,amplitude:.5,frequency:2.5},{method:THREE.Terrain.Simplex,amplitude:.25,frequency:5},{method:THREE.Terrain.Simplex,amplitude:.125,frequency:10},{method:THREE.Terrain.Simplex,amplitude:.0625,frequency:20}])},function(){function o(e,r,n,t,a,i){if(!(t<n)){for(var o=0,m=0,h=t,s=t,f=Math.floor(t/n),E=-f,u=-f,o=0,g,T;o<=h;o+=f){for(m=0;m<=s;m+=f){var l=m*h+o;if(i[l]=Math.random()*a,!(E<0&&u<0)){for(var c=i[l],d=i[m*h+(o-f)]||c,H=i[(m-f)*h+o]||c,v=i[(m-f)*h+(o-f)]||c,y=E;y<o;y++)for(var M=u,x,x,p,S,R;M<m;M++){y===E&&M===u||((x=M*h+y)<0||(i[x]=(p=(M-u)/f)*((x=(y-E)/f)*c+(1-x)*d)+(1-p)*(x*H+(1-x)*v)))}u=m}}E=o,u=-f}for(o=0,h=r.xSegments+1;o<h;o++)for(m=0,s=r.ySegments+1;m<s;m++){e[m*h+o]+=i[m*t+o]}}}THREE.Terrain.Value=function(e,r){for(var n=THREE.Math.ceilPowerOfTwo(Math.max(r.xSegments,r.ySegments)+1),t=new Float64Array((n+1)*(n+1)),a=r.maxHeight-r.minHeight,i=2;i<7;i++)o(e,r,Math.pow(2,i),n,a*Math.pow(2,2.4-1.2*i),t);THREE.Terrain.Clamp(e,{maxHeight:r.maxHeight,minHeight:r.minHeight,stretch:!0})}}(),THREE.Terrain.Weierstrass=function(e,r){for(var n=.5*(r.maxHeight-r.minHeight),t=Math.random()<.5?1:-1,a=Math.random()<.5?1:-1,i=+Math.random()+.5,o=+Math.random()+.5,m=.025+.1*Math.random(),h=2*Math.random()-1,s=+Math.random()+.5,f=+Math.random()+.5,E=.025+.1*Math.random(),u=2*Math.random()-1,g=0,T=r.xSegments+1;g<T;g++)for(var l=0,c=r.ySegments+1;l<c;l++){for(var d=0,H=0;H<20;H++){var v=Math.pow(1+i,-H)*Math.sin(Math.pow(1+o,H)*(g+.25*Math.cos(l)+h*l)*m),y=Math.pow(1+s,-H)*Math.sin(Math.pow(1+f,H)*(l+.25*Math.cos(g)+u*g)*E);d-=Math.exp(t*v*v+a*y*y)}e[l*T+g]+=d*n}THREE.Terrain.Clamp(e,r)},THREE.Terrain.generateBlendedMaterial=function(t){function e(e){return e===(0|e)?e+".0":e+""}for(var r="",n="",a=t[0].texture.repeat,i=t[0].texture.offset,o=0,m=t.length;o<m;o++)if(t[o].texture.wrapS=t[o].wrapT=THREE.RepeatWrapping,t[o].texture.needsUpdate=!0,r+="uniform sampler2D texture_"+o+";\n",0!==o){var h=t[o].levels,s=t[o].glsl,f=void 0!==h,E=t[o].texture.repeat,u=t[o].texture.offset;if(f){h[1]-h[0]<1&&--h[0],h[3]-h[2]<1&&(h[3]+=1);for(var g=0;g<h.length;g++)h[g]=e(h[g])}var s=f?"1.0 - smoothstep("+h[0]+", "+h[1]+", vPosition.z) + smoothstep("+h[2]+", "+h[3]+", vPosition.z)":s;n+="        color = mix( texture2D( texture_"+o+", MyvUv * vec2( "+e(E.x)+", "+e(E.y)+" ) + vec2( "+e(u.x)+", "+e(u.y)+" ) ), color, max(min("+s+", 1.0), 0.0));\n"}var T="float slope = acos(max(min(dot(myNormal, vec3(0.0, 0.0, 1.0)), 1.0), -1.0));\n    diffuseColor = vec4( diffuse, opacity );\n    vec4 color = texture2D( texture_0, MyvUv * vec2( "+e(a.x)+", "+e(a.y)+" ) + vec2( "+e(i.x)+", "+e(i.y)+" ) ); // base\n"+n+"    diffuseColor = color;\n",l=r+"\nvarying vec2 MyvUv;\nvarying vec3 vPosition;\nvarying vec3 myNormal;\n",i=new THREE.MeshLambertMaterial;return i.onBeforeCompile=function(e){e.vertexShader=e.vertexShader.replace("#include <common>","varying vec2 MyvUv;\nvarying vec3 vPosition;\nvarying vec3 myNormal;\n#include <common>"),e.vertexShader=e.vertexShader.replace("#include <uv_vertex>","MyvUv = uv;\nvPosition = position;\nmyNormal = normal;\n#include <uv_vertex>"),e.fragmentShader=e.fragmentShader.replace("#include <common>",l+"\n#include <common>"),e.fragmentShader=e.fragmentShader.replace("#include <map_fragment>",T);for(var r=0,n=t.length;r<n;r++)e.uniforms["texture_"+r]={type:"t",value:t[r].texture}},i},THREE.Terrain.ScatterMeshes=function(e,r){if(!r.mesh)return console.error("options.mesh is required for THREE.Terrain.ScatterMeshes but was not passed"),undefined;r.scene||(r.scene=new THREE.Object3D);var n={spread:.025,smoothSpread:0,sizeVariance:.1,randomness:Math.random,maxSlope:.6283185307179586,maxTilt:1/0,w:0,h:0},t;for(t in n)n.hasOwnProperty(t)&&(r[t]=(void 0===r[t]?n:r)[t]);var a="number"==typeof r.spread,i,o,m=1/r.smoothSpread,h=2*r.sizeVariance,s=new THREE.Vector3,f=new THREE.Vector3,E=new THREE.Vector3,u=new THREE.Vector3,g=r.mesh.up.clone().applyAxisAngle(new THREE.Vector3(1,0,0),.5*Math.PI);a&&(o="number"==typeof(i=r.randomness())?Math.random:function(e){return i[e]});for(var T=(e=e.toNonIndexed()).attributes.position.array,l=0;l<e.attributes.position.array.length;l+=9){s.set(T[l+0],T[l+1],T[l+2]),f.set(T[l+3],T[l+4],T[l+5]),E.set(T[l+6],T[l+7],T[l+8]),THREE.Triangle.getNormal(s,f,E,u);var c=!1,d,d,c,c,H,H;a?(d=o(key))<r.spread?c=!0:d<r.spread+r.smoothSpread&&(c=THREE.Terrain.EaseInOut((d-r.spread)*m)*r.spread>Math.random()):c=r.spread(s,l/9,u,l),c&&(u.angleTo(g)>r.maxSlope||((d=r.mesh.clone()).position.addVectors(s,f).add(E).divideScalar(3),0<r.maxTilt&&(c=d.position.clone().add(u),d.lookAt(c),(c=u.angleTo(g))>r.maxTilt&&(H=r.maxTilt/c,d.rotation.x*=H,d.rotation.y*=H,d.rotation.z*=H)),d.rotation.x+=.5*Math.PI,d.rotateY(2*Math.random()*Math.PI),r.sizeVariance&&(H=Math.random()*h-r.sizeVariance,d.scale.x=d.scale.z=1+H,d.scale.y+=H),d.updateMatrix(),r.scene.add(d)))}return r.scene},THREE.Terrain.ScatterHelper=function(e,r,n,t){n=n||1,t=t||.25,r.frequency=r.frequency||2.5;var a={},i;for(i in r)r.hasOwnProperty(i)&&(a[i]=r[i]);a.xSegments*=2,a.stretch=!0,a.maxHeight=1,a.minHeight=0;for(var o=THREE.Terrain.heightmapArray(e,a),m=0,h=o.length;m<h;m++)(m%n||Math.random()>t)&&(o[m]=1);return function(){return o}},THREE.Terrain.Influences={Mesa:function(e){return 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diff --git a/build/THREE.Terrain.min.js.map b/build/THREE.Terrain.min.js.map
index bcdc07e..320de1e 100644
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\ No newline at end of file
diff --git a/demo/index.js b/demo/index.js
index 0ef2d63..b081ab3 100644
--- a/demo/index.js
+++ b/demo/index.js
@@ -1,23 +1,3 @@
-var webglExists = ( function () { try { var canvas = document.createElement( 'canvas' ); return !!window.WebGLRenderingContext && ( canvas.getContext( 'webgl' ) || canvas.getContext( 'experimental-webgl' ) ); } catch( e ) { return false; } } )(); // jscs:ignore
-
-if (!webglExists) {
-  alert('Your browser does not appear to support WebGL. You can try viewing this page anyway, but it may be slow and some things may not look as intended. Please try viewing on desktop Firefox or Chrome.');
-}
-
-if (/&?webgl=0\b/g.test(location.hash)) {
-  webglExists = !confirm('Are you sure you want to disable WebGL on this page?');
-  if (webglExists) {
-    location.hash = '#';
-  }
-}
-
-// Workaround: in Chrome, if a page is opened with window.open(),
-// window.innerWidth and window.innerHeight will be zero.
-if ( window.innerWidth === 0 ) {
-  window.innerWidth = parent.innerWidth;
-  window.innerHeight = parent.innerHeight;
-}
-
 var camera, scene, renderer, clock, player, terrainScene, decoScene, lastOptions, controls = {}, fpsCamera, skyDome, skyLight, sand, water; // jscs:ignore requireLineBreakAfterVariableAssignment
 var INV_MAX_FPS = 1 / 100,
     frameDelta = 0,
@@ -45,7 +25,7 @@ function animate() {
 function startAnimating() {
   if (paused) {
     paused = false;
-    controls.freeze = false;
+    controls.enabled = true;
     clock.start();
     requestAnimationFrame(animate);
   }
@@ -53,7 +33,7 @@ function startAnimating() {
 
 function stopAnimating() {
   paused = true;
-  controls.freeze = true;
+  controls.enabled = false;
   clock.stop();
 }
 
@@ -70,7 +50,7 @@ function setupThreeJS() {
   scene = new THREE.Scene();
   scene.fog = new THREE.FogExp2(0x868293, 0.0007);
 
-  renderer = webglExists ? new THREE.WebGLRenderer({ antialias: true }) : new THREE.CanvasRenderer();
+  renderer = new THREE.WebGLRenderer({ antialias: true });
   renderer.setSize(window.innerWidth, window.innerHeight);
   document.body.appendChild(renderer.domElement);
   renderer.domElement.setAttribute('tabindex', -1);
@@ -91,7 +71,7 @@ function setupControls() {
   fpsCamera = new THREE.PerspectiveCamera(60, renderer.domElement.width / renderer.domElement.height, 1, 10000);
   scene.add(fpsCamera);
   controls = new THREE.FirstPersonControls(fpsCamera, renderer.domElement);
-  controls.freeze = true;
+  controls.enabled = false;
   controls.movementSpeed = 100;
   controls.lookSpeed = 0.075;
 }
@@ -164,12 +144,12 @@ function setupDatGui() {
     this.heightmap = 'PerlinDiamond';
     this.smoothing = 'None';
     this.maxHeight = 200;
-    this.segments = webglExists ? 63 : 31;
+    this.segments = 63;
     this.steps = 1;
     this.turbulent = false;
     this.size = 1024;
     this.sky = true;
-    this.texture = webglExists ? 'Blended' : 'Wireframe';
+    this.texture = 'Blended';
     this.edgeDirection = 'Normal';
     this.edgeType = 'Box';
     this.edgeDistance = 256;
@@ -203,12 +183,10 @@ function setupDatGui() {
         steps: that.steps,
         stretch: true,
         turbulent: that.turbulent,
-        useBufferGeometry: false,
         xSize: that.size,
         ySize: Math.round(that.size * that['width:length ratio']),
         xSegments: s,
         ySegments: Math.round(s * that['width:length ratio']),
-        _mesh: typeof terrainScene === 'undefined' ? null : terrainScene.children[0], // internal only
       };
       scene.remove(terrainScene);
       terrainScene = THREE.Terrain(o);
@@ -218,7 +196,7 @@ function setupDatGui() {
       var he = document.getElementById('heightmap');
       if (he) {
         o.heightmap = he;
-        THREE.Terrain.toHeightmap(terrainScene.children[0].geometry.vertices, o);
+        THREE.Terrain.toHeightmap(terrainScene.children[0].geometry.attributes.position.array, o);
       }
       that['Scatter meshes']();
       lastOptions = o;
@@ -252,12 +230,6 @@ function setupDatGui() {
       return k % 4 === 0 && Math.random() < altitudeProbability(v.z);
     };
     var mesh = buildTree();
-    var decoMat = mesh.material.map(
-      function(mat) {
-        return mat.clone();
-      }); // new THREE.MeshBasicMaterial({color: 0x229966, wireframe: true});
-    decoMat[0].wireframe = true;
-    decoMat[1].wireframe = true;
     this['Scatter meshes'] = function() {
       var s = parseInt(that.segments, 10),
           spread,
@@ -307,12 +279,12 @@ function setupDatGui() {
         maxTilt: 0.15707963267948966, //  9deg or  9 / 180 * Math.PI. Trees grow up regardless of slope but we can allow a small variation
       });
       if (decoScene) {
-        if (that.texture == 'Wireframe') {
-          decoScene.children[0].material = decoMat;
-        }
-        else if (that.texture == 'Grayscale') {
-          decoScene.children[0].material = gray;
-        }
+        // if (that.texture == 'Wireframe') {
+        //   decoScene.children[0].material = decoMat;
+        // }
+        // else if (that.texture == 'Grayscale') {
+        //   decoScene.children[0].material = gray;
+        // }
         terrainScene.add(decoScene);
       }
     };
@@ -326,7 +298,7 @@ function setupDatGui() {
     applySmoothing(val, lastOptions);
     settings['Scatter meshes']();
     if (lastOptions.heightmap) {
-      THREE.Terrain.toHeightmap(terrainScene.children[0].geometry.vertices, lastOptions);
+      THREE.Terrain.toHeightmap(terrainScene.children[0].geometry.attributes.position.array, lastOptions);
     }
   });
   heightmapFolder.add(settings, 'segments', 7, 127).step(1).onFinishChange(settings.Regenerate);
@@ -354,14 +326,13 @@ function setupDatGui() {
     fpsCamera.position.x = 449;
     fpsCamera.position.y = 311;
     fpsCamera.position.z = 376;
-    controls.lat = -41;
-    controls.lon = -139;
+    controls.lookAt(terrainScene.children[0].position);
     controls.update(0);
-    controls.freeze = true;
+    controls.enabled = false;
     if (useFPS) {
       document.getElementById('fpscontrols').className = 'visible';
       setTimeout(function() {
-        controls.freeze = false;
+        controls.enabled = true;
       }, 1000);
     }
     else {
@@ -403,6 +374,12 @@ function update(delta) {
   if (controls.update) controls.update(delta);
 }
 
+document.addEventListener('keyup', function(event) {
+  if (event.key === 'q' && useFPS) {
+    controls.enabled = !controls.enabled;
+  }
+});
+
 document.addEventListener('mousemove', function(event) {
   if (!paused) {
     mouseX = event.pageX;
@@ -416,14 +393,14 @@ function watchFocus() {
   window.addEventListener('focus', function() {
     if (_blurred) {
       _blurred = false;
-      // startAnimating();
-      // controls.freeze = false;
+      startAnimating();
+      controls.enabled = true;
     }
   });
   window.addEventListener('blur', function() {
-    // stopAnimating();
+    stopAnimating();
     _blurred = true;
-    controls.freeze = true;
+    controls.enabled = false;
   });
 }
 
@@ -449,14 +426,12 @@ function __printCameraData() {
   s += 'camera.rotation.x = ' + Math.round(fpsCamera.rotation.x * 180 / Math.PI) + ' * Math.PI / 180;\n';
   s += 'camera.rotation.y = ' + Math.round(fpsCamera.rotation.y * 180 / Math.PI) + ' * Math.PI / 180;\n';
   s += 'camera.rotation.z = ' + Math.round(fpsCamera.rotation.z * 180 / Math.PI) + ' * Math.PI / 180;\n';
-  s += 'controls.lat = ' + Math.round(controls.lat) + ';\n';
-  s += 'controls.lon = ' + Math.round(controls.lon) + ';\n';
   console.log(s);
 }
 
 function applySmoothing(smoothing, o) {
   var m = terrainScene.children[0];
-  var g = m.geometry.vertices;
+  var g = THREE.Terrain.toArray1D(m.geometry.attributes.position.array);
   if (smoothing === 'Conservative (0.5)') THREE.Terrain.SmoothConservative(g, o, 0.5);
   if (smoothing === 'Conservative (1)') THREE.Terrain.SmoothConservative(g, o, 1);
   if (smoothing === 'Conservative (10)') THREE.Terrain.SmoothConservative(g, o, 10);
@@ -470,44 +445,34 @@ function applySmoothing(smoothing, o) {
   else if (smoothing === 'Mean (1)') THREE.Terrain.Smooth(g, o, 1);
   else if (smoothing === 'Mean (8)') THREE.Terrain.Smooth(g, o, 8);
   else if (smoothing === 'Median') THREE.Terrain.SmoothMedian(g, o);
+  THREE.Terrain.fromArray1D(m.geometry.attributes.position.array, g);
   THREE.Terrain.Normalize(m, o);
 }
 
 function buildTree() {
-  var material = [
-    new THREE.MeshLambertMaterial({ color: 0x3d2817 }), // brown
-    new THREE.MeshLambertMaterial({ color: 0x2d4c1e }), // green
-  ];
-
-  var c0 = new THREE.Mesh(new THREE.CylinderGeometry(2, 2, 12, 6, 1, true));
-  c0.position.y = 6;
-  var c1 = new THREE.Mesh(new THREE.CylinderGeometry(0, 10, 14, 8));
-  c1.position.y = 18;
-  var c2 = new THREE.Mesh(new THREE.CylinderGeometry(0, 9, 13, 8));
-  c2.position.y = 25;
-  var c3 = new THREE.Mesh(new THREE.CylinderGeometry(0, 8, 12, 8));
-  c3.position.y = 32;
-
-  var g = new THREE.Geometry();
-  c0.updateMatrix();
-  c1.updateMatrix();
-  c2.updateMatrix();
-  c3.updateMatrix();
-  g.merge(c0.geometry, c0.matrix);
-  g.merge(c1.geometry, c1.matrix);
-  g.merge(c2.geometry, c2.matrix);
-  g.merge(c3.geometry, c3.matrix);
-
-  var b = c0.geometry.faces.length;
-  for (var i = 0, l = g.faces.length; i < l; i++) {
-    g.faces[i].materialIndex = i < b ? 0 : 1;
-  }
-
-  var m = new THREE.Mesh(g, material);
+  var green = new THREE.MeshLambertMaterial({ color: 0x2d4c1e });
 
-  m.scale.x = m.scale.z = 5;
-  m.scale.y = 1.25;
-  return m;
+  var c0 = new THREE.Mesh(
+    new THREE.CylinderGeometry(2, 2, 12, 6, 1, true),
+    new THREE.MeshLambertMaterial({ color: 0x3d2817 }) // brown
+  );
+  c0.position.setY(6);
+
+  var c1 = new THREE.Mesh(new THREE.CylinderGeometry(0, 10, 14, 8), green);
+  c1.position.setY(18);
+  var c2 = new THREE.Mesh(new THREE.CylinderGeometry(0, 9, 13, 8), green);
+  c2.position.setY(25);
+  var c3 = new THREE.Mesh(new THREE.CylinderGeometry(0, 8, 12, 8), green);
+  c3.position.setY(32);
+
+  var s = new THREE.Object3D();
+  s.add(c0);
+  s.add(c1);
+  s.add(c2);
+  s.add(c3);
+  s.scale.set(5, 1.25, 5);
+
+  return s;
 }
 
 function customInfluences(g, options) {
@@ -577,7 +542,7 @@ function cleanAnalytic(val) {
   while (valIntStr.length + c.length < 5) {
     c += ' ';
   }
-  return c + val.round(3);
+  return c + (typeof val === 'undefined' || val === null ? NaN : val).round(3);
 }
 
 var moments = {
diff --git a/demo/libs/CanvasRenderer.js b/demo/libs/CanvasRenderer.js
deleted file mode 100644
index 95ef955..0000000
--- a/demo/libs/CanvasRenderer.js
+++ /dev/null
@@ -1,1157 +0,0 @@
-/**
- * @author mrdoob / http://mrdoob.com/
- */
-
-THREE.SpriteCanvasMaterial = function ( parameters ) {
-
-	THREE.Material.call( this );
-
-	this.type = 'SpriteCanvasMaterial';
-
-	this.color = new THREE.Color( 0xffffff );
-	this.program = function () {};
-
-	this.setValues( parameters );
-
-};
-
-THREE.SpriteCanvasMaterial.prototype = Object.create( THREE.Material.prototype );
-THREE.SpriteCanvasMaterial.prototype.constructor = THREE.SpriteCanvasMaterial;
-THREE.SpriteCanvasMaterial.prototype.isSpriteCanvasMaterial = true;
-
-THREE.SpriteCanvasMaterial.prototype.clone = function () {
-
-	var material = new THREE.SpriteCanvasMaterial();
-
-	material.copy( this );
-	material.color.copy( this.color );
-	material.program = this.program;
-
-	return material;
-
-};
-
-//
-
-THREE.CanvasRenderer = function ( parameters ) {
-
-	console.log( 'THREE.CanvasRenderer', THREE.REVISION );
-
-	parameters = parameters || {};
-
-	var _this = this,
-		_renderData, _elements, _lights,
-		_projector = new THREE.Projector(),
-
-		_canvas = parameters.canvas !== undefined
-				 ? parameters.canvas
-				 : document.createElement( 'canvas' ),
-
-		_canvasWidth = _canvas.width,
-		_canvasHeight = _canvas.height,
-		_canvasWidthHalf = Math.floor( _canvasWidth / 2 ),
-		_canvasHeightHalf = Math.floor( _canvasHeight / 2 ),
-
-		_viewportX = 0,
-		_viewportY = 0,
-		_viewportWidth = _canvasWidth,
-		_viewportHeight = _canvasHeight,
-
-		_pixelRatio = 1,
-
-		_context = _canvas.getContext( '2d', {
-			alpha: parameters.alpha === true
-		} ),
-
-		_clearColor = new THREE.Color( 0x000000 ),
-		_clearAlpha = parameters.alpha === true ? 0 : 1,
-
-		_contextGlobalAlpha = 1,
-		_contextGlobalCompositeOperation = 0,
-		_contextStrokeStyle = null,
-		_contextFillStyle = null,
-		_contextLineWidth = null,
-		_contextLineCap = null,
-		_contextLineJoin = null,
-		_contextLineDash = [],
-
-		_v1, _v2, _v3,
-
-		_v1x, _v1y, _v2x, _v2y, _v3x, _v3y,
-
-		_color = new THREE.Color(),
-
-		_diffuseColor = new THREE.Color(),
-		_emissiveColor = new THREE.Color(),
-
-		_lightColor = new THREE.Color(),
-
-		_patterns = {},
-
-		_uvs,
-		_uv1x, _uv1y, _uv2x, _uv2y, _uv3x, _uv3y,
-
-		_clipBox = new THREE.Box2(),
-		_clearBox = new THREE.Box2(),
-		_elemBox = new THREE.Box2(),
-
-		_ambientLight = new THREE.Color(),
-		_directionalLights = new THREE.Color(),
-		_pointLights = new THREE.Color(),
-
-		_vector3 = new THREE.Vector3(), // Needed for PointLight
-		_centroid = new THREE.Vector3(),
-		_normal = new THREE.Vector3(),
-		_normalViewMatrix = new THREE.Matrix3();
-
-	/* TODO
-	_canvas.mozImageSmoothingEnabled = false;
-	_canvas.webkitImageSmoothingEnabled = false;
-	_canvas.msImageSmoothingEnabled = false;
-	_canvas.imageSmoothingEnabled = false;
-	*/
-
-	// dash+gap fallbacks for Firefox and everything else
-
-	if ( _context.setLineDash === undefined ) {
-
-		_context.setLineDash = function () {};
-
-	}
-
-	this.domElement = _canvas;
-
-	this.autoClear = true;
-	this.sortObjects = true;
-	this.sortElements = true;
-
-	this.info = {
-
-		render: {
-
-			vertices: 0,
-			faces: 0
-
-		}
-
-	};
-
-	// WebGLRenderer compatibility
-
-	this.supportsVertexTextures = function () {};
-	this.setFaceCulling = function () {};
-
-	// API
-
-	this.getContext = function () {
-
-		return _context;
-
-	};
-
-	this.getContextAttributes = function () {
-
-		return _context.getContextAttributes();
-
-	};
-
-	this.getPixelRatio = function () {
-
-		return _pixelRatio;
-
-	};
-
-	this.setPixelRatio = function ( value ) {
-
-		if ( value !== undefined ) _pixelRatio = value;
-
-	};
-
-	this.setSize = function ( width, height, updateStyle ) {
-
-		_canvasWidth = width * _pixelRatio;
-		_canvasHeight = height * _pixelRatio;
-
-		_canvas.width = _canvasWidth;
-		_canvas.height = _canvasHeight;
-
-		_canvasWidthHalf = Math.floor( _canvasWidth / 2 );
-		_canvasHeightHalf = Math.floor( _canvasHeight / 2 );
-
-		if ( updateStyle !== false ) {
-
-			_canvas.style.width = width + 'px';
-			_canvas.style.height = height + 'px';
-
-		}
-
-		_clipBox.min.set( - _canvasWidthHalf, - _canvasHeightHalf );
-		_clipBox.max.set(   _canvasWidthHalf,   _canvasHeightHalf );
-
-		_clearBox.min.set( - _canvasWidthHalf, - _canvasHeightHalf );
-		_clearBox.max.set(   _canvasWidthHalf,   _canvasHeightHalf );
-
-		_contextGlobalAlpha = 1;
-		_contextGlobalCompositeOperation = 0;
-		_contextStrokeStyle = null;
-		_contextFillStyle = null;
-		_contextLineWidth = null;
-		_contextLineCap = null;
-		_contextLineJoin = null;
-
-		this.setViewport( 0, 0, width, height );
-
-	};
-
-	this.setViewport = function ( x, y, width, height ) {
-
-		_viewportX = x * _pixelRatio;
-		_viewportY = y * _pixelRatio;
-
-		_viewportWidth = width * _pixelRatio;
-		_viewportHeight = height * _pixelRatio;
-
-	};
-
-	this.setScissor = function () {};
-	this.setScissorTest = function () {};
-
-	this.setClearColor = function ( color, alpha ) {
-
-		_clearColor.set( color );
-		_clearAlpha = alpha !== undefined ? alpha : 1;
-
-		_clearBox.min.set( - _canvasWidthHalf, - _canvasHeightHalf );
-		_clearBox.max.set(   _canvasWidthHalf,   _canvasHeightHalf );
-
-	};
-
-	this.setClearColorHex = function ( hex, alpha ) {
-
-		console.warn( 'THREE.CanvasRenderer: .setClearColorHex() is being removed. Use .setClearColor() instead.' );
-		this.setClearColor( hex, alpha );
-
-	};
-
-	this.getClearColor = function () {
-
-		return _clearColor;
-
-	};
-
-	this.getClearAlpha = function () {
-
-		return _clearAlpha;
-
-	};
-
-	this.getMaxAnisotropy = function () {
-
-		return 0;
-
-	};
-
-	this.clear = function () {
-
-		if ( _clearBox.isEmpty() === false ) {
-
-			_clearBox.intersect( _clipBox );
-			_clearBox.expandByScalar( 2 );
-
-			_clearBox.min.x =   _clearBox.min.x + _canvasWidthHalf;
-			_clearBox.min.y = - _clearBox.min.y + _canvasHeightHalf;		// higher y value !
-			_clearBox.max.x =   _clearBox.max.x + _canvasWidthHalf;
-			_clearBox.max.y = - _clearBox.max.y + _canvasHeightHalf;		// lower y value !
-
-			if ( _clearAlpha < 1 ) {
-
-				_context.clearRect(
-					_clearBox.min.x | 0,
-					_clearBox.max.y | 0,
-					( _clearBox.max.x - _clearBox.min.x ) | 0,
-					( _clearBox.min.y - _clearBox.max.y ) | 0
-				);
-
-			}
-
-			if ( _clearAlpha > 0 ) {
-
-				setBlending( THREE.NormalBlending );
-				setOpacity( 1 );
-
-				setFillStyle( 'rgba(' + Math.floor( _clearColor.r * 255 ) + ',' + Math.floor( _clearColor.g * 255 ) + ',' + Math.floor( _clearColor.b * 255 ) + ',' + _clearAlpha + ')' );
-
-				_context.fillRect(
-					_clearBox.min.x | 0,
-					_clearBox.max.y | 0,
-					( _clearBox.max.x - _clearBox.min.x ) | 0,
-					( _clearBox.min.y - _clearBox.max.y ) | 0
-				);
-
-			}
-
-			_clearBox.makeEmpty();
-
-		}
-
-	};
-
-	// compatibility
-
-	this.clearColor = function () {};
-	this.clearDepth = function () {};
-	this.clearStencil = function () {};
-
-	this.render = function ( scene, camera ) {
-
-		if ( camera.isCamera === undefined ) {
-
-			console.error( 'THREE.CanvasRenderer.render: camera is not an instance of THREE.Camera.' );
-			return;
-
-		}
-
-		var background = scene.background;
-
-		if ( background && background.isColor ) {
-
-			setFillStyle( 'rgb(' + Math.floor( background.r * 255 ) + ',' + Math.floor( background.g * 255 ) + ',' + Math.floor( background.b * 255 ) + ')' );
-			_context.fillRect( 0, 0, _canvasWidth, _canvasHeight );
-
-		} else if ( this.autoClear === true ) {
-
-			this.clear();
-
-		}
-
-		_this.info.render.vertices = 0;
-		_this.info.render.faces = 0;
-
-		_context.setTransform( _viewportWidth / _canvasWidth, 0, 0, - _viewportHeight / _canvasHeight, _viewportX, _canvasHeight - _viewportY );
-		_context.translate( _canvasWidthHalf, _canvasHeightHalf );
-
-		_renderData = _projector.projectScene( scene, camera, this.sortObjects, this.sortElements );
-		_elements = _renderData.elements;
-		_lights = _renderData.lights;
-
-		_normalViewMatrix.getNormalMatrix( camera.matrixWorldInverse );
-
-		/* DEBUG
-		setFillStyle( 'rgba( 0, 255, 255, 0.5 )' );
-		_context.fillRect( _clipBox.min.x, _clipBox.min.y, _clipBox.max.x - _clipBox.min.x, _clipBox.max.y - _clipBox.min.y );
-		*/
-
-		calculateLights();
-
-		for ( var e = 0, el = _elements.length; e < el; e ++ ) {
-
-			var element = _elements[ e ];
-
-			var material = element.material;
-
-			if ( material === undefined || material.opacity === 0 ) continue;
-
-			_elemBox.makeEmpty();
-
-			if ( element instanceof THREE.RenderableSprite ) {
-
-				_v1 = element;
-				_v1.x *= _canvasWidthHalf; _v1.y *= _canvasHeightHalf;
-
-				renderSprite( _v1, element, material );
-
-			} else if ( element instanceof THREE.RenderableLine ) {
-
-				_v1 = element.v1; _v2 = element.v2;
-
-				_v1.positionScreen.x *= _canvasWidthHalf; _v1.positionScreen.y *= _canvasHeightHalf;
-				_v2.positionScreen.x *= _canvasWidthHalf; _v2.positionScreen.y *= _canvasHeightHalf;
-
-				_elemBox.setFromPoints( [
-					_v1.positionScreen,
-					_v2.positionScreen
-				] );
-
-				if ( _clipBox.intersectsBox( _elemBox ) === true ) {
-
-					renderLine( _v1, _v2, element, material );
-
-				}
-
-			} else if ( element instanceof THREE.RenderableFace ) {
-
-				_v1 = element.v1; _v2 = element.v2; _v3 = element.v3;
-
-				if ( _v1.positionScreen.z < - 1 || _v1.positionScreen.z > 1 ) continue;
-				if ( _v2.positionScreen.z < - 1 || _v2.positionScreen.z > 1 ) continue;
-				if ( _v3.positionScreen.z < - 1 || _v3.positionScreen.z > 1 ) continue;
-
-				_v1.positionScreen.x *= _canvasWidthHalf; _v1.positionScreen.y *= _canvasHeightHalf;
-				_v2.positionScreen.x *= _canvasWidthHalf; _v2.positionScreen.y *= _canvasHeightHalf;
-				_v3.positionScreen.x *= _canvasWidthHalf; _v3.positionScreen.y *= _canvasHeightHalf;
-
-				if ( material.overdraw > 0 ) {
-
-					expand( _v1.positionScreen, _v2.positionScreen, material.overdraw );
-					expand( _v2.positionScreen, _v3.positionScreen, material.overdraw );
-					expand( _v3.positionScreen, _v1.positionScreen, material.overdraw );
-
-				}
-
-				_elemBox.setFromPoints( [
-					_v1.positionScreen,
-					_v2.positionScreen,
-					_v3.positionScreen
-				] );
-
-				if ( _clipBox.intersectsBox( _elemBox ) === true ) {
-
-					renderFace3( _v1, _v2, _v3, 0, 1, 2, element, material );
-
-				}
-
-			}
-
-			/* DEBUG
-			setLineWidth( 1 );
-			setStrokeStyle( 'rgba( 0, 255, 0, 0.5 )' );
-			_context.strokeRect( _elemBox.min.x, _elemBox.min.y, _elemBox.max.x - _elemBox.min.x, _elemBox.max.y - _elemBox.min.y );
-			*/
-
-			_clearBox.union( _elemBox );
-
-		}
-
-		/* DEBUG
-		setLineWidth( 1 );
-		setStrokeStyle( 'rgba( 255, 0, 0, 0.5 )' );
-		_context.strokeRect( _clearBox.min.x, _clearBox.min.y, _clearBox.max.x - _clearBox.min.x, _clearBox.max.y - _clearBox.min.y );
-		*/
-
-		_context.setTransform( 1, 0, 0, 1, 0, 0 );
-
-	};
-
-	//
-
-	function calculateLights() {
-
-		_ambientLight.setRGB( 0, 0, 0 );
-		_directionalLights.setRGB( 0, 0, 0 );
-		_pointLights.setRGB( 0, 0, 0 );
-
-		for ( var l = 0, ll = _lights.length; l < ll; l ++ ) {
-
-			var light = _lights[ l ];
-			var lightColor = light.color;
-
-			if ( light.isAmbientLight ) {
-
-				_ambientLight.add( lightColor );
-
-			} else if ( light.isDirectionalLight ) {
-
-				// for sprites
-
-				_directionalLights.add( lightColor );
-
-			} else if ( light.isPointLight ) {
-
-				// for sprites
-
-				_pointLights.add( lightColor );
-
-			}
-
-		}
-
-	}
-
-	function calculateLight( position, normal, color ) {
-
-		for ( var l = 0, ll = _lights.length; l < ll; l ++ ) {
-
-			var light = _lights[ l ];
-
-			_lightColor.copy( light.color );
-
-			if ( light.isDirectionalLight ) {
-
-				var lightPosition = _vector3.setFromMatrixPosition( light.matrixWorld ).normalize();
-
-				var amount = normal.dot( lightPosition );
-
-				if ( amount <= 0 ) continue;
-
-				amount *= light.intensity;
-
-				color.add( _lightColor.multiplyScalar( amount ) );
-
-			} else if ( light.isPointLight ) {
-
-				var lightPosition = _vector3.setFromMatrixPosition( light.matrixWorld );
-
-				var amount = normal.dot( _vector3.subVectors( lightPosition, position ).normalize() );
-
-				if ( amount <= 0 ) continue;
-
-				amount *= light.distance == 0 ? 1 : 1 - Math.min( position.distanceTo( lightPosition ) / light.distance, 1 );
-
-				if ( amount == 0 ) continue;
-
-				amount *= light.intensity;
-
-				color.add( _lightColor.multiplyScalar( amount ) );
-
-			}
-
-		}
-
-	}
-
-	function renderSprite( v1, element, material ) {
-
-		setOpacity( material.opacity );
-		setBlending( material.blending );
-
-		var scaleX = element.scale.x * _canvasWidthHalf;
-		var scaleY = element.scale.y * _canvasHeightHalf;
-
-		var dist = Math.sqrt( scaleX * scaleX + scaleY * scaleY ); // allow for rotated sprite
-		_elemBox.min.set( v1.x - dist, v1.y - dist );
-		_elemBox.max.set( v1.x + dist, v1.y + dist );
-
-		if ( material.isSpriteMaterial ) {
-
-			var texture = material.map;
-
-			if ( texture !== null ) {
-
-				var pattern = _patterns[ texture.id ];
-
-				if ( pattern === undefined || pattern.version !== texture.version ) {
-
-					pattern = textureToPattern( texture );
-					_patterns[ texture.id ] = pattern;
-
-				}
-
-				if ( pattern.canvas !== undefined ) {
-
-					setFillStyle( pattern.canvas );
-
-					var bitmap = texture.image;
-
-					var ox = bitmap.width * texture.offset.x;
-					var oy = bitmap.height * texture.offset.y;
-
-					var sx = bitmap.width * texture.repeat.x;
-					var sy = bitmap.height * texture.repeat.y;
-
-					var cx = scaleX / sx;
-					var cy = scaleY / sy;
-
-					_context.save();
-					_context.translate( v1.x, v1.y );
-					if ( material.rotation !== 0 ) _context.rotate( material.rotation );
-					_context.translate( - scaleX / 2, - scaleY / 2 );
-					_context.scale( cx, cy );
-					_context.translate( - ox, - oy );
-					_context.fillRect( ox, oy, sx, sy );
-					_context.restore();
-
-				}
-
-			} else {
-
-				// no texture
-
-				setFillStyle( material.color.getStyle() );
-
-				_context.save();
-				_context.translate( v1.x, v1.y );
-				if ( material.rotation !== 0 ) _context.rotate( material.rotation );
-				_context.scale( scaleX, - scaleY );
-				_context.fillRect( - 0.5, - 0.5, 1, 1 );
-				_context.restore();
-
-			}
-
-		} else if ( material.isSpriteCanvasMaterial ) {
-
-			setStrokeStyle( material.color.getStyle() );
-			setFillStyle( material.color.getStyle() );
-
-			_context.save();
-			_context.translate( v1.x, v1.y );
-			if ( material.rotation !== 0 ) _context.rotate( material.rotation );
-			_context.scale( scaleX, scaleY );
-
-			material.program( _context );
-
-			_context.restore();
-
-		} else if ( material.isPointsMaterial ) {
-
-			setFillStyle( material.color.getStyle() );
-
-			_context.save();
-			_context.translate( v1.x, v1.y );
-			if ( material.rotation !== 0 ) _context.rotate( material.rotation );
-			_context.scale( scaleX * material.size, - scaleY * material.size );
-			_context.fillRect( - 0.5, - 0.5, 1, 1 );
-			_context.restore();
-
-		}
-
-		/* DEBUG
-		setStrokeStyle( 'rgb(255,255,0)' );
-		_context.beginPath();
-		_context.moveTo( v1.x - 10, v1.y );
-		_context.lineTo( v1.x + 10, v1.y );
-		_context.moveTo( v1.x, v1.y - 10 );
-		_context.lineTo( v1.x, v1.y + 10 );
-		_context.stroke();
-		*/
-
-	}
-
-	function renderLine( v1, v2, element, material ) {
-
-		setOpacity( material.opacity );
-		setBlending( material.blending );
-
-		_context.beginPath();
-		_context.moveTo( v1.positionScreen.x, v1.positionScreen.y );
-		_context.lineTo( v2.positionScreen.x, v2.positionScreen.y );
-
-		if ( material.isLineBasicMaterial ) {
-
-			setLineWidth( material.linewidth );
-			setLineCap( material.linecap );
-			setLineJoin( material.linejoin );
-
-			if ( material.vertexColors !== THREE.VertexColors ) {
-
-				setStrokeStyle( material.color.getStyle() );
-
-			} else {
-
-				var colorStyle1 = element.vertexColors[ 0 ].getStyle();
-				var colorStyle2 = element.vertexColors[ 1 ].getStyle();
-
-				if ( colorStyle1 === colorStyle2 ) {
-
-					setStrokeStyle( colorStyle1 );
-
-				} else {
-
-					try {
-
-						var grad = _context.createLinearGradient(
-							v1.positionScreen.x,
-							v1.positionScreen.y,
-							v2.positionScreen.x,
-							v2.positionScreen.y
-						);
-						grad.addColorStop( 0, colorStyle1 );
-						grad.addColorStop( 1, colorStyle2 );
-
-					} catch ( exception ) {
-
-						grad = colorStyle1;
-
-					}
-
-					setStrokeStyle( grad );
-
-				}
-
-			}
-
-			_context.stroke();
-			_elemBox.expandByScalar( material.linewidth * 2 );
-
-		} else if ( material.isLineDashedMaterial ) {
-
-			setLineWidth( material.linewidth );
-			setLineCap( material.linecap );
-			setLineJoin( material.linejoin );
-			setStrokeStyle( material.color.getStyle() );
-			setLineDash( [ material.dashSize, material.gapSize ] );
-
-			_context.stroke();
-
-			_elemBox.expandByScalar( material.linewidth * 2 );
-
-			setLineDash( [] );
-
-		}
-
-	}
-
-	function renderFace3( v1, v2, v3, uv1, uv2, uv3, element, material ) {
-
-		_this.info.render.vertices += 3;
-		_this.info.render.faces ++;
-
-		setOpacity( material.opacity );
-		setBlending( material.blending );
-
-		_v1x = v1.positionScreen.x; _v1y = v1.positionScreen.y;
-		_v2x = v2.positionScreen.x; _v2y = v2.positionScreen.y;
-		_v3x = v3.positionScreen.x; _v3y = v3.positionScreen.y;
-
-		drawTriangle( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y );
-
-		if ( ( material.isMeshLambertMaterial || material.isMeshPhongMaterial || material.isMeshStandardMaterial ) && material.map === null ) {
-
-			_diffuseColor.copy( material.color );
-			_emissiveColor.copy( material.emissive );
-
-			if ( material.vertexColors === THREE.FaceColors ) {
-
-				_diffuseColor.multiply( element.color );
-
-			}
-
-			_color.copy( _ambientLight );
-
-			_centroid.copy( v1.positionWorld ).add( v2.positionWorld ).add( v3.positionWorld ).divideScalar( 3 );
-
-			calculateLight( _centroid, element.normalModel, _color );
-
-			_color.multiply( _diffuseColor ).add( _emissiveColor );
-
-			material.wireframe === true
-				 ? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )
-				 : fillPath( _color );
-
-		} else if ( material.isMeshBasicMaterial || material.isMeshLambertMaterial || material.isMeshPhongMaterial || material.isMeshStandardMaterial ) {
-
-			if ( material.map !== null ) {
-
-				var mapping = material.map.mapping;
-
-				if ( mapping === THREE.UVMapping ) {
-
-					_uvs = element.uvs;
-					patternPath( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, _uvs[ uv1 ].x, _uvs[ uv1 ].y, _uvs[ uv2 ].x, _uvs[ uv2 ].y, _uvs[ uv3 ].x, _uvs[ uv3 ].y, material.map );
-
-				}
-
-			} else if ( material.envMap !== null ) {
-
-				if ( material.envMap.mapping === THREE.SphericalReflectionMapping ) {
-
-					_normal.copy( element.vertexNormalsModel[ uv1 ] ).applyMatrix3( _normalViewMatrix );
-					_uv1x = 0.5 * _normal.x + 0.5;
-					_uv1y = 0.5 * _normal.y + 0.5;
-
-					_normal.copy( element.vertexNormalsModel[ uv2 ] ).applyMatrix3( _normalViewMatrix );
-					_uv2x = 0.5 * _normal.x + 0.5;
-					_uv2y = 0.5 * _normal.y + 0.5;
-
-					_normal.copy( element.vertexNormalsModel[ uv3 ] ).applyMatrix3( _normalViewMatrix );
-					_uv3x = 0.5 * _normal.x + 0.5;
-					_uv3y = 0.5 * _normal.y + 0.5;
-
-					patternPath( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, _uv1x, _uv1y, _uv2x, _uv2y, _uv3x, _uv3y, material.envMap );
-
-				}
-
-			} else {
-
-				_color.copy( material.color );
-
-				if ( material.vertexColors === THREE.FaceColors ) {
-
-					_color.multiply( element.color );
-
-				}
-
-				material.wireframe === true
-					 ? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )
-					 : fillPath( _color );
-
-			}
-
-		} else if ( material.isMeshNormalMaterial ) {
-
-			_normal.copy( element.normalModel ).applyMatrix3( _normalViewMatrix );
-
-			_color.setRGB( _normal.x, _normal.y, _normal.z ).multiplyScalar( 0.5 ).addScalar( 0.5 );
-
-			material.wireframe === true
-				 ? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )
-				 : fillPath( _color );
-
-		} else {
-
-			_color.setRGB( 1, 1, 1 );
-
-			material.wireframe === true
-				 ? strokePath( _color, material.wireframeLinewidth, material.wireframeLinecap, material.wireframeLinejoin )
-				 : fillPath( _color );
-
-		}
-
-	}
-
-	//
-
-	function drawTriangle( x0, y0, x1, y1, x2, y2 ) {
-
-		_context.beginPath();
-		_context.moveTo( x0, y0 );
-		_context.lineTo( x1, y1 );
-		_context.lineTo( x2, y2 );
-		_context.closePath();
-
-	}
-
-	function strokePath( color, linewidth, linecap, linejoin ) {
-
-		setLineWidth( linewidth );
-		setLineCap( linecap );
-		setLineJoin( linejoin );
-		setStrokeStyle( color.getStyle() );
-
-		_context.stroke();
-
-		_elemBox.expandByScalar( linewidth * 2 );
-
-	}
-
-	function fillPath( color ) {
-
-		setFillStyle( color.getStyle() );
-		_context.fill();
-
-	}
-
-	function textureToPattern( texture ) {
-
-		if ( texture.version === 0 ||
-			texture instanceof THREE.CompressedTexture ||
-			texture instanceof THREE.DataTexture ) {
-
-			return {
-				canvas: undefined,
-				version: texture.version
-			};
-
-		}
-
-		var image = texture.image;
-
-		if ( image.complete === false ) {
-
-			return {
-				canvas: undefined,
-				version: 0
-			};
-
-		}
-
-		var repeatX = texture.wrapS === THREE.RepeatWrapping || texture.wrapS === THREE.MirroredRepeatWrapping;
-		var repeatY = texture.wrapT === THREE.RepeatWrapping || texture.wrapT === THREE.MirroredRepeatWrapping;
-
-		var mirrorX = texture.wrapS === THREE.MirroredRepeatWrapping;
-		var mirrorY = texture.wrapT === THREE.MirroredRepeatWrapping;
-
-		//
-
-		var canvas = document.createElement( 'canvas' );
-		canvas.width = image.width * ( mirrorX ? 2 : 1 );
-		canvas.height = image.height * ( mirrorY ? 2 : 1 );
-
-		var context = canvas.getContext( '2d' );
-		context.setTransform( 1, 0, 0, - 1, 0, image.height );
-		context.drawImage( image, 0, 0 );
-
-		if ( mirrorX === true ) {
-
-			context.setTransform( - 1, 0, 0, - 1, image.width, image.height );
-			context.drawImage( image, - image.width, 0 );
-
-		}
-
-		if ( mirrorY === true ) {
-
-			context.setTransform( 1, 0, 0, 1, 0, 0 );
-			context.drawImage( image, 0, image.height );
-
-		}
-
-		if ( mirrorX === true && mirrorY === true ) {
-
-			context.setTransform( - 1, 0, 0, 1, image.width, 0 );
-			context.drawImage( image, - image.width, image.height );
-
-		}
-
-		var repeat = 'no-repeat';
-
-		if ( repeatX === true && repeatY === true ) {
-
-			repeat = 'repeat';
-
-		} else if ( repeatX === true ) {
-
-			repeat = 'repeat-x';
-
-		} else if ( repeatY === true ) {
-
-			repeat = 'repeat-y';
-
-		}
-
-		var pattern = _context.createPattern( canvas, repeat );
-
-		if ( texture.onUpdate ) texture.onUpdate( texture );
-
-		return {
-			canvas: pattern,
-			version: texture.version
-		};
-
-	}
-
-	function patternPath( x0, y0, x1, y1, x2, y2, u0, v0, u1, v1, u2, v2, texture ) {
-
-		var pattern = _patterns[ texture.id ];
-
-		if ( pattern === undefined || pattern.version !== texture.version ) {
-
-			pattern = textureToPattern( texture );
-			_patterns[ texture.id ] = pattern;
-
-		}
-
-		if ( pattern.canvas !== undefined ) {
-
-			setFillStyle( pattern.canvas );
-
-		} else {
-
-			setFillStyle( 'rgba( 0, 0, 0, 1)' );
-			_context.fill();
-			return;
-
-		}
-
-		// http://extremelysatisfactorytotalitarianism.com/blog/?p=2120
-
-		var a, b, c, d, e, f, det, idet,
-			offsetX = texture.offset.x / texture.repeat.x,
-			offsetY = texture.offset.y / texture.repeat.y,
-			width = texture.image.width * texture.repeat.x,
-			height = texture.image.height * texture.repeat.y;
-
-		u0 = ( u0 + offsetX ) * width;
-		v0 = ( v0 + offsetY ) * height;
-
-		u1 = ( u1 + offsetX ) * width;
-		v1 = ( v1 + offsetY ) * height;
-
-		u2 = ( u2 + offsetX ) * width;
-		v2 = ( v2 + offsetY ) * height;
-
-		x1 -= x0; y1 -= y0;
-		x2 -= x0; y2 -= y0;
-
-		u1 -= u0; v1 -= v0;
-		u2 -= u0; v2 -= v0;
-
-		det = u1 * v2 - u2 * v1;
-
-		if ( det === 0 ) return;
-
-		idet = 1 / det;
-
-		a = ( v2 * x1 - v1 * x2 ) * idet;
-		b = ( v2 * y1 - v1 * y2 ) * idet;
-		c = ( u1 * x2 - u2 * x1 ) * idet;
-		d = ( u1 * y2 - u2 * y1 ) * idet;
-
-		e = x0 - a * u0 - c * v0;
-		f = y0 - b * u0 - d * v0;
-
-		_context.save();
-		_context.transform( a, b, c, d, e, f );
-		_context.fill();
-		_context.restore();
-
-	}
-
-	/*
-	function clipImage( x0, y0, x1, y1, x2, y2, u0, v0, u1, v1, u2, v2, image ) {
-
-		// http://extremelysatisfactorytotalitarianism.com/blog/?p=2120
-
-		var a, b, c, d, e, f, det, idet,
-		width = image.width - 1,
-		height = image.height - 1;
-
-		u0 *= width; v0 *= height;
-		u1 *= width; v1 *= height;
-		u2 *= width; v2 *= height;
-
-		x1 -= x0; y1 -= y0;
-		x2 -= x0; y2 -= y0;
-
-		u1 -= u0; v1 -= v0;
-		u2 -= u0; v2 -= v0;
-
-		det = u1 * v2 - u2 * v1;
-
-		idet = 1 / det;
-
-		a = ( v2 * x1 - v1 * x2 ) * idet;
-		b = ( v2 * y1 - v1 * y2 ) * idet;
-		c = ( u1 * x2 - u2 * x1 ) * idet;
-		d = ( u1 * y2 - u2 * y1 ) * idet;
-
-		e = x0 - a * u0 - c * v0;
-		f = y0 - b * u0 - d * v0;
-
-		_context.save();
-		_context.transform( a, b, c, d, e, f );
-		_context.clip();
-		_context.drawImage( image, 0, 0 );
-		_context.restore();
-
-	}
-	*/
-
-	// Hide anti-alias gaps
-
-	function expand( v1, v2, pixels ) {
-
-		var x = v2.x - v1.x, y = v2.y - v1.y,
-			det = x * x + y * y, idet;
-
-		if ( det === 0 ) return;
-
-		idet = pixels / Math.sqrt( det );
-
-		x *= idet; y *= idet;
-
-		v2.x += x; v2.y += y;
-		v1.x -= x; v1.y -= y;
-
-	}
-
-	// Context cached methods.
-
-	function setOpacity( value ) {
-
-		if ( _contextGlobalAlpha !== value ) {
-
-			_context.globalAlpha = value;
-			_contextGlobalAlpha = value;
-
-		}
-
-	}
-
-	function setBlending( value ) {
-
-		if ( _contextGlobalCompositeOperation !== value ) {
-
-			if ( value === THREE.NormalBlending ) {
-
-				_context.globalCompositeOperation = 'source-over';
-
-			} else if ( value === THREE.AdditiveBlending ) {
-
-				_context.globalCompositeOperation = 'lighter';
-
-			} else if ( value === THREE.SubtractiveBlending ) {
-
-				_context.globalCompositeOperation = 'darker';
-
-			} else if ( value === THREE.MultiplyBlending ) {
-
-				_context.globalCompositeOperation = 'multiply';
-
-			}
-
-			_contextGlobalCompositeOperation = value;
-
-		}
-
-	}
-
-	function setLineWidth( value ) {
-
-		if ( _contextLineWidth !== value ) {
-
-			_context.lineWidth = value;
-			_contextLineWidth = value;
-
-		}
-
-	}
-
-	function setLineCap( value ) {
-
-		// "butt", "round", "square"
-
-		if ( _contextLineCap !== value ) {
-
-			_context.lineCap = value;
-			_contextLineCap = value;
-
-		}
-
-	}
-
-	function setLineJoin( value ) {
-
-		// "round", "bevel", "miter"
-
-		if ( _contextLineJoin !== value ) {
-
-			_context.lineJoin = value;
-			_contextLineJoin = value;
-
-		}
-
-	}
-
-	function setStrokeStyle( value ) {
-
-		if ( _contextStrokeStyle !== value ) {
-
-			_context.strokeStyle = value;
-			_contextStrokeStyle = value;
-
-		}
-
-	}
-
-	function setFillStyle( value ) {
-
-		if ( _contextFillStyle !== value ) {
-
-			_context.fillStyle = value;
-			_contextFillStyle = value;
-
-		}
-
-	}
-
-	function setLineDash( value ) {
-
-		if ( _contextLineDash.length !== value.length ) {
-
-			_context.setLineDash( value );
-			_contextLineDash = value;
-
-		}
-
-	}
-
-};
diff --git a/demo/libs/FirstPersonControls.js b/demo/libs/FirstPersonControls.js
index 51e0c39..f21b0f0 100644
--- a/demo/libs/FirstPersonControls.js
+++ b/demo/libs/FirstPersonControls.js
@@ -1,300 +1,341 @@
-/**
- * @author mrdoob / http://mrdoob.com/
- * @author alteredq / http://alteredqualia.com/
- * @author paulirish / http://paulirish.com/
- */
+( function () {
 
-THREE.FirstPersonControls = function ( object, domElement ) {
+	const _lookDirection = new THREE.Vector3();
 
-	this.object = object;
-	this.target = new THREE.Vector3( 0, 0, 0 );
+	const _spherical = new THREE.Spherical();
 
-	this.domElement = ( domElement !== undefined ) ? domElement : document;
+	const _target = new THREE.Vector3();
 
-	this.enabled = true;
+	class FirstPersonControls {
 
-	this.movementSpeed = 1.0;
-	this.lookSpeed = 0.005;
+		constructor( object, domElement ) {
 
-	this.lookVertical = true;
-	this.autoForward = false;
+			if ( domElement === undefined ) {
 
-	this.activeLook = true;
+				console.warn( 'THREE.FirstPersonControls: The second parameter "domElement" is now mandatory.' );
+				domElement = document;
 
-	this.heightSpeed = false;
-	this.heightCoef = 1.0;
-	this.heightMin = 0.0;
-	this.heightMax = 1.0;
+			}
 
-	this.constrainVertical = false;
-	this.verticalMin = 0;
-	this.verticalMax = Math.PI;
+			this.object = object;
+			this.domElement = domElement; // API
+
+			this.enabled = true;
+			this.movementSpeed = 1.0;
+			this.lookSpeed = 0.005;
+			this.lookVertical = true;
+			this.autoForward = false;
+			this.activeLook = true;
+			this.heightSpeed = false;
+			this.heightCoef = 1.0;
+			this.heightMin = 0.0;
+			this.heightMax = 1.0;
+			this.constrainVertical = false;
+			this.verticalMin = 0;
+			this.verticalMax = Math.PI;
+			this.mouseDragOn = false; // internals
 
-	this.autoSpeedFactor = 0.0;
+			this.autoSpeedFactor = 0.0;
+			this.mouseX = 0;
+			this.mouseY = 0;
+			this.moveForward = false;
+			this.moveBackward = false;
+			this.moveLeft = false;
+			this.moveRight = false;
+			this.viewHalfX = 0;
+			this.viewHalfY = 0; // private variables
 
-	this.mouseX = 0;
-	this.mouseY = 0;
+			let lat = 0;
+			let lon = 0; //
 
-	this.lat = 0;
-	this.lon = 0;
-	this.phi = 0;
-	this.theta = 0;
+			this.handleResize = function () {
 
-	this.moveForward = false;
-	this.moveBackward = false;
-	this.moveLeft = false;
-	this.moveRight = false;
+				if ( this.domElement === document ) {
 
-	this.mouseDragOn = false;
+					this.viewHalfX = window.innerWidth / 2;
+					this.viewHalfY = window.innerHeight / 2;
 
-	this.viewHalfX = 0;
-	this.viewHalfY = 0;
+				} else {
 
-	if ( this.domElement !== document ) {
+					this.viewHalfX = this.domElement.offsetWidth / 2;
+					this.viewHalfY = this.domElement.offsetHeight / 2;
 
-		this.domElement.setAttribute( 'tabindex', - 1 );
+				}
 
-	}
+			};
 
-	//
+			this.onMouseDown = function ( event ) {
 
-	this.handleResize = function () {
+				if ( this.domElement !== document ) {
 
-		if ( this.domElement === document ) {
+					this.domElement.focus();
 
-			this.viewHalfX = window.innerWidth / 2;
-			this.viewHalfY = window.innerHeight / 2;
+				}
 
-		} else {
+				if ( this.activeLook ) {
 
-			this.viewHalfX = this.domElement.offsetWidth / 2;
-			this.viewHalfY = this.domElement.offsetHeight / 2;
+					switch ( event.button ) {
 
-		}
+						case 0:
+							this.moveForward = true;
+							break;
 
-	};
+						case 2:
+							this.moveBackward = true;
+							break;
 
-	this.onMouseDown = function ( event ) {
+					}
 
-		if ( this.domElement !== document ) {
+				}
 
-			this.domElement.focus();
+				this.mouseDragOn = true;
 
-		}
+			};
 
-		event.preventDefault();
-		event.stopPropagation();
+			this.onMouseUp = function ( event ) {
 
-		if ( this.activeLook ) {
+				if ( this.activeLook ) {
 
-			switch ( event.button ) {
+					switch ( event.button ) {
 
-				case 0: this.moveForward = true; break;
-				case 2: this.moveBackward = true; break;
+						case 0:
+							this.moveForward = false;
+							break;
 
-			}
+						case 2:
+							this.moveBackward = false;
+							break;
 
-		}
+					}
 
-		this.mouseDragOn = true;
+				}
 
-	};
+				this.mouseDragOn = false;
 
-	this.onMouseUp = function ( event ) {
+			};
 
-		event.preventDefault();
-		event.stopPropagation();
+			this.onMouseMove = function ( event ) {
 
-		if ( this.activeLook ) {
+				if ( this.domElement === document ) {
 
-			switch ( event.button ) {
+					this.mouseX = event.pageX - this.viewHalfX;
+					this.mouseY = event.pageY - this.viewHalfY;
 
-				case 0: this.moveForward = false; break;
-				case 2: this.moveBackward = false; break;
+				} else {
 
-			}
+					this.mouseX = event.pageX - this.domElement.offsetLeft - this.viewHalfX;
+					this.mouseY = event.pageY - this.domElement.offsetTop - this.viewHalfY;
 
-		}
+				}
 
-		this.mouseDragOn = false;
+			};
 
-	};
+			this.onKeyDown = function ( event ) {
 
-	this.onMouseMove = function ( event ) {
+				switch ( event.code ) {
 
-		if ( this.domElement === document ) {
+					case 'ArrowUp':
+					case 'KeyW':
+						this.moveForward = true;
+						break;
 
-			this.mouseX = event.pageX - this.viewHalfX;
-			this.mouseY = event.pageY - this.viewHalfY;
+					case 'ArrowLeft':
+					case 'KeyA':
+						this.moveLeft = true;
+						break;
 
-		} else {
+					case 'ArrowDown':
+					case 'KeyS':
+						this.moveBackward = true;
+						break;
 
-			this.mouseX = event.pageX - this.domElement.offsetLeft - this.viewHalfX;
-			this.mouseY = event.pageY - this.domElement.offsetTop - this.viewHalfY;
+					case 'ArrowRight':
+					case 'KeyD':
+						this.moveRight = true;
+						break;
 
-		}
+					case 'KeyR':
+						this.moveUp = true;
+						break;
 
-	};
+					case 'KeyF':
+						this.moveDown = true;
+						break;
 
-	this.onKeyDown = function ( event ) {
+				}
 
-		//event.preventDefault();
+			};
 
-		switch ( event.keyCode ) {
+			this.onKeyUp = function ( event ) {
 
-			case 38: /*up*/
-			case 87: /*W*/ this.moveForward = true; break;
+				switch ( event.code ) {
 
-			case 37: /*left*/
-			case 65: /*A*/ this.moveLeft = true; break;
+					case 'ArrowUp':
+					case 'KeyW':
+						this.moveForward = false;
+						break;
 
-			case 40: /*down*/
-			case 83: /*S*/ this.moveBackward = true; break;
+					case 'ArrowLeft':
+					case 'KeyA':
+						this.moveLeft = false;
+						break;
 
-			case 39: /*right*/
-			case 68: /*D*/ this.moveRight = true; break;
+					case 'ArrowDown':
+					case 'KeyS':
+						this.moveBackward = false;
+						break;
 
-			case 82: /*R*/ this.moveUp = true; break;
-			case 70: /*F*/ this.moveDown = true; break;
+					case 'ArrowRight':
+					case 'KeyD':
+						this.moveRight = false;
+						break;
 
-		}
+					case 'KeyR':
+						this.moveUp = false;
+						break;
 
-	};
+					case 'KeyF':
+						this.moveDown = false;
+						break;
 
-	this.onKeyUp = function ( event ) {
+				}
 
-		switch ( event.keyCode ) {
+			};
 
-			case 38: /*up*/
-			case 87: /*W*/ this.moveForward = false; break;
+			this.lookAt = function ( x, y, z ) {
 
-			case 37: /*left*/
-			case 65: /*A*/ this.moveLeft = false; break;
+				if ( x.isVector3 ) {
 
-			case 40: /*down*/
-			case 83: /*S*/ this.moveBackward = false; break;
+					_target.copy( x );
 
-			case 39: /*right*/
-			case 68: /*D*/ this.moveRight = false; break;
+				} else {
 
-			case 82: /*R*/ this.moveUp = false; break;
-			case 70: /*F*/ this.moveDown = false; break;
+					_target.set( x, y, z );
 
-		}
+				}
 
-	};
+				this.object.lookAt( _target );
+				setOrientation( this );
+				return this;
 
-	this.update = function( delta ) {
+			};
 
-		if ( this.enabled === false ) return;
+			this.update = function () {
 
-		if ( this.heightSpeed ) {
+				const targetPosition = new THREE.Vector3();
+				return function update( delta ) {
 
-			var y = THREE.Math.clamp( this.object.position.y, this.heightMin, this.heightMax );
-			var heightDelta = y - this.heightMin;
+					if ( this.enabled === false ) return;
 
-			this.autoSpeedFactor = delta * ( heightDelta * this.heightCoef );
+					if ( this.heightSpeed ) {
 
-		} else {
+						const y = THREE.MathUtils.clamp( this.object.position.y, this.heightMin, this.heightMax );
+						const heightDelta = y - this.heightMin;
+						this.autoSpeedFactor = delta * ( heightDelta * this.heightCoef );
 
-			this.autoSpeedFactor = 0.0;
+					} else {
 
-		}
+						this.autoSpeedFactor = 0.0;
 
-		var actualMoveSpeed = delta * this.movementSpeed;
+					}
 
-		if ( this.moveForward || ( this.autoForward && ! this.moveBackward ) ) this.object.translateZ( - ( actualMoveSpeed + this.autoSpeedFactor ) );
-		if ( this.moveBackward ) this.object.translateZ( actualMoveSpeed );
+					const actualMoveSpeed = delta * this.movementSpeed;
+					if ( this.moveForward || this.autoForward && ! this.moveBackward ) this.object.translateZ( - ( actualMoveSpeed + this.autoSpeedFactor ) );
+					if ( this.moveBackward ) this.object.translateZ( actualMoveSpeed );
+					if ( this.moveLeft ) this.object.translateX( - actualMoveSpeed );
+					if ( this.moveRight ) this.object.translateX( actualMoveSpeed );
+					if ( this.moveUp ) this.object.translateY( actualMoveSpeed );
+					if ( this.moveDown ) this.object.translateY( - actualMoveSpeed );
+					let actualLookSpeed = delta * this.lookSpeed;
 
-		if ( this.moveLeft ) this.object.translateX( - actualMoveSpeed );
-		if ( this.moveRight ) this.object.translateX( actualMoveSpeed );
+					if ( ! this.activeLook ) {
 
-		if ( this.moveUp ) this.object.translateY( actualMoveSpeed );
-		if ( this.moveDown ) this.object.translateY( - actualMoveSpeed );
+						actualLookSpeed = 0;
 
-		var actualLookSpeed = delta * this.lookSpeed;
+					}
 
-		if ( ! this.activeLook ) {
+					let verticalLookRatio = 1;
 
-			actualLookSpeed = 0;
+					if ( this.constrainVertical ) {
 
-		}
+						verticalLookRatio = Math.PI / ( this.verticalMax - this.verticalMin );
 
-		var verticalLookRatio = 1;
+					}
 
-		if ( this.constrainVertical ) {
+					lon -= this.mouseX * actualLookSpeed;
+					if ( this.lookVertical ) lat -= this.mouseY * actualLookSpeed * verticalLookRatio;
+					lat = Math.max( - 85, Math.min( 85, lat ) );
+					let phi = THREE.MathUtils.degToRad( 90 - lat );
+					const theta = THREE.MathUtils.degToRad( lon );
 
-			verticalLookRatio = Math.PI / ( this.verticalMax - this.verticalMin );
+					if ( this.constrainVertical ) {
 
-		}
+						phi = THREE.MathUtils.mapLinear( phi, 0, Math.PI, this.verticalMin, this.verticalMax );
 
-		this.lon += this.mouseX * actualLookSpeed;
-		if ( this.lookVertical ) this.lat -= this.mouseY * actualLookSpeed * verticalLookRatio;
+					}
 
-		this.lat = Math.max( - 85, Math.min( 85, this.lat ) );
-		this.phi = THREE.Math.degToRad( 90 - this.lat );
+					const position = this.object.position;
+					targetPosition.setFromSphericalCoords( 1, phi, theta ).add( position );
+					this.object.lookAt( targetPosition );
 
-		this.theta = THREE.Math.degToRad( this.lon );
+				};
 
-		if ( this.constrainVertical ) {
+			}();
 
-			this.phi = THREE.Math.mapLinear( this.phi, 0, Math.PI, this.verticalMin, this.verticalMax );
+			this.dispose = function () {
 
-		}
+				this.domElement.removeEventListener( 'contextmenu', contextmenu );
+				this.domElement.removeEventListener( 'mousedown', _onMouseDown );
+				this.domElement.removeEventListener( 'mousemove', _onMouseMove );
+				this.domElement.removeEventListener( 'mouseup', _onMouseUp );
+				window.removeEventListener( 'keydown', _onKeyDown );
+				window.removeEventListener( 'keyup', _onKeyUp );
 
-		var targetPosition = this.target,
-			position = this.object.position;
+			};
 
-		targetPosition.x = position.x + 100 * Math.sin( this.phi ) * Math.cos( this.theta );
-		targetPosition.y = position.y + 100 * Math.cos( this.phi );
-		targetPosition.z = position.z + 100 * Math.sin( this.phi ) * Math.sin( this.theta );
+			const _onMouseMove = this.onMouseMove.bind( this );
 
-		this.object.lookAt( targetPosition );
+			const _onMouseDown = this.onMouseDown.bind( this );
 
-	};
+			const _onMouseUp = this.onMouseUp.bind( this );
 
-	function contextmenu( event ) {
+			const _onKeyDown = this.onKeyDown.bind( this );
 
-		event.preventDefault();
+			const _onKeyUp = this.onKeyUp.bind( this );
 
-	}
+			this.domElement.addEventListener( 'contextmenu', contextmenu );
+			this.domElement.addEventListener( 'mousemove', _onMouseMove );
+			this.domElement.addEventListener( 'mousedown', _onMouseDown );
+			this.domElement.addEventListener( 'mouseup', _onMouseUp );
+			window.addEventListener( 'keydown', _onKeyDown );
+			window.addEventListener( 'keyup', _onKeyUp );
 
-	this.dispose = function() {
+			function setOrientation( controls ) {
 
-		this.domElement.removeEventListener( 'contextmenu', contextmenu, false );
-		this.domElement.removeEventListener( 'mousedown', _onMouseDown, false );
-		this.domElement.removeEventListener( 'mousemove', _onMouseMove, false );
-		this.domElement.removeEventListener( 'mouseup', _onMouseUp, false );
+				const quaternion = controls.object.quaternion;
 
-		window.removeEventListener( 'keydown', _onKeyDown, false );
-		window.removeEventListener( 'keyup', _onKeyUp, false );
+				_lookDirection.set( 0, 0, - 1 ).applyQuaternion( quaternion );
 
-	};
+				_spherical.setFromVector3( _lookDirection );
 
-	var _onMouseMove = bind( this, this.onMouseMove );
-	var _onMouseDown = bind( this, this.onMouseDown );
-	var _onMouseUp = bind( this, this.onMouseUp );
-	var _onKeyDown = bind( this, this.onKeyDown );
-	var _onKeyUp = bind( this, this.onKeyUp );
+				lat = 90 - THREE.MathUtils.radToDeg( _spherical.phi );
+				lon = THREE.MathUtils.radToDeg( _spherical.theta );
 
-	this.domElement.addEventListener( 'contextmenu', contextmenu, false );
-	this.domElement.addEventListener( 'mousemove', _onMouseMove, false );
-	this.domElement.addEventListener( 'mousedown', _onMouseDown, false );
-	this.domElement.addEventListener( 'mouseup', _onMouseUp, false );
+			}
 
-	window.addEventListener( 'keydown', _onKeyDown, false );
-	window.addEventListener( 'keyup', _onKeyUp, false );
+			this.handleResize();
+			setOrientation( this );
 
-	function bind( scope, fn ) {
+		}
 
-		return function () {
+	}
 
-			fn.apply( scope, arguments );
+	function contextmenu( event ) {
 
-		};
+		event.preventDefault();
 
 	}
 
-	this.handleResize();
+	THREE.FirstPersonControls = FirstPersonControls;
 
-};
+} )();
diff --git a/demo/libs/Projector.js b/demo/libs/Projector.js
deleted file mode 100644
index ebb915e..0000000
--- a/demo/libs/Projector.js
+++ /dev/null
@@ -1,1028 +0,0 @@
-/**
- * @author mrdoob / http://mrdoob.com/
- * @author supereggbert / http://www.paulbrunt.co.uk/
- * @author julianwa / https://github.com/julianwa
- */
-
-THREE.RenderableObject = function () {
-
-	this.id = 0;
-
-	this.object = null;
-	this.z = 0;
-	this.renderOrder = 0;
-
-};
-
-//
-
-THREE.RenderableFace = function () {
-
-	this.id = 0;
-
-	this.v1 = new THREE.RenderableVertex();
-	this.v2 = new THREE.RenderableVertex();
-	this.v3 = new THREE.RenderableVertex();
-
-	this.normalModel = new THREE.Vector3();
-
-	this.vertexNormalsModel = [ new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3() ];
-	this.vertexNormalsLength = 0;
-
-	this.color = new THREE.Color();
-	this.material = null;
-	this.uvs = [ new THREE.Vector2(), new THREE.Vector2(), new THREE.Vector2() ];
-
-	this.z = 0;
-	this.renderOrder = 0;
-
-};
-
-//
-
-THREE.RenderableVertex = function () {
-
-	this.position = new THREE.Vector3();
-	this.positionWorld = new THREE.Vector3();
-	this.positionScreen = new THREE.Vector4();
-
-	this.visible = true;
-
-};
-
-THREE.RenderableVertex.prototype.copy = function ( vertex ) {
-
-	this.positionWorld.copy( vertex.positionWorld );
-	this.positionScreen.copy( vertex.positionScreen );
-
-};
-
-//
-
-THREE.RenderableLine = function () {
-
-	this.id = 0;
-
-	this.v1 = new THREE.RenderableVertex();
-	this.v2 = new THREE.RenderableVertex();
-
-	this.vertexColors = [ new THREE.Color(), new THREE.Color() ];
-	this.material = null;
-
-	this.z = 0;
-	this.renderOrder = 0;
-
-};
-
-//
-
-THREE.RenderableSprite = function () {
-
-	this.id = 0;
-
-	this.object = null;
-
-	this.x = 0;
-	this.y = 0;
-	this.z = 0;
-
-	this.rotation = 0;
-	this.scale = new THREE.Vector2();
-
-	this.material = null;
-	this.renderOrder = 0;
-
-};
-
-//
-
-THREE.Projector = function () {
-
-	var _object, _objectCount, _objectPool = [], _objectPoolLength = 0,
-		_vertex, _vertexCount, _vertexPool = [], _vertexPoolLength = 0,
-		_face, _faceCount, _facePool = [], _facePoolLength = 0,
-		_line, _lineCount, _linePool = [], _linePoolLength = 0,
-		_sprite, _spriteCount, _spritePool = [], _spritePoolLength = 0,
-
-		_renderData = { objects: [], lights: [], elements: [] },
-
-		_vector3 = new THREE.Vector3(),
-		_vector4 = new THREE.Vector4(),
-
-		_clipBox = new THREE.Box3( new THREE.Vector3( - 1, - 1, - 1 ), new THREE.Vector3( 1, 1, 1 ) ),
-		_boundingBox = new THREE.Box3(),
-		_points3 = new Array( 3 ),
-
-		_viewMatrix = new THREE.Matrix4(),
-		_viewProjectionMatrix = new THREE.Matrix4(),
-
-		_modelMatrix,
-		_modelViewProjectionMatrix = new THREE.Matrix4(),
-
-		_normalMatrix = new THREE.Matrix3(),
-
-		_frustum = new THREE.Frustum(),
-
-		_clippedVertex1PositionScreen = new THREE.Vector4(),
-		_clippedVertex2PositionScreen = new THREE.Vector4();
-
-	//
-
-	this.projectVector = function ( vector, camera ) {
-
-		console.warn( 'THREE.Projector: .projectVector() is now vector.project().' );
-		vector.project( camera );
-
-	};
-
-	this.unprojectVector = function ( vector, camera ) {
-
-		console.warn( 'THREE.Projector: .unprojectVector() is now vector.unproject().' );
-		vector.unproject( camera );
-
-	};
-
-	this.pickingRay = function () {
-
-		console.error( 'THREE.Projector: .pickingRay() is now raycaster.setFromCamera().' );
-
-	};
-
-	//
-
-	var RenderList = function () {
-
-		var normals = [];
-		var colors = [];
-		var uvs = [];
-
-		var object = null;
-		var material = null;
-
-		var normalMatrix = new THREE.Matrix3();
-
-		function setObject( value ) {
-
-			object = value;
-			material = object.material;
-
-			normalMatrix.getNormalMatrix( object.matrixWorld );
-
-			normals.length = 0;
-			colors.length = 0;
-			uvs.length = 0;
-
-		}
-
-		function projectVertex( vertex ) {
-
-			var position = vertex.position;
-			var positionWorld = vertex.positionWorld;
-			var positionScreen = vertex.positionScreen;
-
-			positionWorld.copy( position ).applyMatrix4( _modelMatrix );
-			positionScreen.copy( positionWorld ).applyMatrix4( _viewProjectionMatrix );
-
-			var invW = 1 / positionScreen.w;
-
-			positionScreen.x *= invW;
-			positionScreen.y *= invW;
-			positionScreen.z *= invW;
-
-			vertex.visible = positionScreen.x >= - 1 && positionScreen.x <= 1 &&
-					 positionScreen.y >= - 1 && positionScreen.y <= 1 &&
-					 positionScreen.z >= - 1 && positionScreen.z <= 1;
-
-		}
-
-		function pushVertex( x, y, z ) {
-
-			_vertex = getNextVertexInPool();
-			_vertex.position.set( x, y, z );
-
-			projectVertex( _vertex );
-
-		}
-
-		function pushNormal( x, y, z ) {
-
-			normals.push( x, y, z );
-
-		}
-
-		function pushColor( r, g, b ) {
-
-			colors.push( r, g, b );
-
-		}
-
-		function pushUv( x, y ) {
-
-			uvs.push( x, y );
-
-		}
-
-		function checkTriangleVisibility( v1, v2, v3 ) {
-
-			if ( v1.visible === true || v2.visible === true || v3.visible === true ) return true;
-
-			_points3[ 0 ] = v1.positionScreen;
-			_points3[ 1 ] = v2.positionScreen;
-			_points3[ 2 ] = v3.positionScreen;
-
-			return _clipBox.intersectsBox( _boundingBox.setFromPoints( _points3 ) );
-
-		}
-
-		function checkBackfaceCulling( v1, v2, v3 ) {
-
-			return ( ( v3.positionScreen.x - v1.positionScreen.x ) *
-				    ( v2.positionScreen.y - v1.positionScreen.y ) -
-				    ( v3.positionScreen.y - v1.positionScreen.y ) *
-				    ( v2.positionScreen.x - v1.positionScreen.x ) ) < 0;
-
-		}
-
-		function pushLine( a, b ) {
-
-			var v1 = _vertexPool[ a ];
-			var v2 = _vertexPool[ b ];
-
-			// Clip
-
-			v1.positionScreen.copy( v1.position ).applyMatrix4( _modelViewProjectionMatrix );
-			v2.positionScreen.copy( v2.position ).applyMatrix4( _modelViewProjectionMatrix );
-
-			if ( clipLine( v1.positionScreen, v2.positionScreen ) === true ) {
-
-				// Perform the perspective divide
-				v1.positionScreen.multiplyScalar( 1 / v1.positionScreen.w );
-				v2.positionScreen.multiplyScalar( 1 / v2.positionScreen.w );
-
-				_line = getNextLineInPool();
-				_line.id = object.id;
-				_line.v1.copy( v1 );
-				_line.v2.copy( v2 );
-				_line.z = Math.max( v1.positionScreen.z, v2.positionScreen.z );
-				_line.renderOrder = object.renderOrder;
-
-				_line.material = object.material;
-
-				if ( object.material.vertexColors === THREE.VertexColors ) {
-
-					_line.vertexColors[ 0 ].fromArray( colors, a * 3 );
-					_line.vertexColors[ 1 ].fromArray( colors, b * 3 );
-
-				}
-
-				_renderData.elements.push( _line );
-
-			}
-
-		}
-
-		function pushTriangle( a, b, c ) {
-
-			var v1 = _vertexPool[ a ];
-			var v2 = _vertexPool[ b ];
-			var v3 = _vertexPool[ c ];
-
-			if ( checkTriangleVisibility( v1, v2, v3 ) === false ) return;
-
-			if ( material.side === THREE.DoubleSide || checkBackfaceCulling( v1, v2, v3 ) === true ) {
-
-				_face = getNextFaceInPool();
-
-				_face.id = object.id;
-				_face.v1.copy( v1 );
-				_face.v2.copy( v2 );
-				_face.v3.copy( v3 );
-				_face.z = ( v1.positionScreen.z + v2.positionScreen.z + v3.positionScreen.z ) / 3;
-				_face.renderOrder = object.renderOrder;
-
-				// use first vertex normal as face normal
-
-				_face.normalModel.fromArray( normals, a * 3 );
-				_face.normalModel.applyMatrix3( normalMatrix ).normalize();
-
-				for ( var i = 0; i < 3; i ++ ) {
-
-					var normal = _face.vertexNormalsModel[ i ];
-					normal.fromArray( normals, arguments[ i ] * 3 );
-					normal.applyMatrix3( normalMatrix ).normalize();
-
-					var uv = _face.uvs[ i ];
-					uv.fromArray( uvs, arguments[ i ] * 2 );
-
-				}
-
-				_face.vertexNormalsLength = 3;
-
-				_face.material = object.material;
-
-				_renderData.elements.push( _face );
-
-			}
-
-		}
-
-		return {
-			setObject: setObject,
-			projectVertex: projectVertex,
-			checkTriangleVisibility: checkTriangleVisibility,
-			checkBackfaceCulling: checkBackfaceCulling,
-			pushVertex: pushVertex,
-			pushNormal: pushNormal,
-			pushColor: pushColor,
-			pushUv: pushUv,
-			pushLine: pushLine,
-			pushTriangle: pushTriangle
-		};
-
-	};
-
-	var renderList = new RenderList();
-
-	function projectObject( object ) {
-
-		if ( object.visible === false ) return;
-
-		if ( object instanceof THREE.Light ) {
-
-			_renderData.lights.push( object );
-
-		} else if ( object instanceof THREE.Mesh || object instanceof THREE.Line || object instanceof THREE.Points ) {
-
-			if ( object.material.visible === false ) return;
-			if ( object.frustumCulled === true && _frustum.intersectsObject( object ) === false ) return;
-
-			addObject( object );
-
-		} else if ( object instanceof THREE.Sprite ) {
-
-			if ( object.material.visible === false ) return;
-			if ( object.frustumCulled === true && _frustum.intersectsSprite( object ) === false ) return;
-
-			addObject( object );
-
-		}
-
-		var children = object.children;
-
-		for ( var i = 0, l = children.length; i < l; i ++ ) {
-
-			projectObject( children[ i ] );
-
-		}
-
-	}
-
-	function addObject( object ) {
-
-		_object = getNextObjectInPool();
-		_object.id = object.id;
-		_object.object = object;
-
-		_vector3.setFromMatrixPosition( object.matrixWorld );
-		_vector3.applyMatrix4( _viewProjectionMatrix );
-		_object.z = _vector3.z;
-		_object.renderOrder = object.renderOrder;
-
-		_renderData.objects.push( _object );
-
-	}
-
-	this.projectScene = function ( scene, camera, sortObjects, sortElements ) {
-
-		_faceCount = 0;
-		_lineCount = 0;
-		_spriteCount = 0;
-
-		_renderData.elements.length = 0;
-
-		if ( scene.autoUpdate === true ) scene.updateMatrixWorld();
-		if ( camera.parent === null ) camera.updateMatrixWorld();
-
-		_viewMatrix.copy( camera.matrixWorldInverse );
-		_viewProjectionMatrix.multiplyMatrices( camera.projectionMatrix, _viewMatrix );
-
-		_frustum.setFromMatrix( _viewProjectionMatrix );
-
-		//
-
-		_objectCount = 0;
-
-		_renderData.objects.length = 0;
-		_renderData.lights.length = 0;
-
-		projectObject( scene );
-
-		if ( sortObjects === true ) {
-
-			_renderData.objects.sort( painterSort );
-
-		}
-
-		//
-
-		var objects = _renderData.objects;
-
-		for ( var o = 0, ol = objects.length; o < ol; o ++ ) {
-
-			var object = objects[ o ].object;
-			var geometry = object.geometry;
-
-			renderList.setObject( object );
-
-			_modelMatrix = object.matrixWorld;
-
-			_vertexCount = 0;
-
-			if ( object instanceof THREE.Mesh ) {
-
-				if ( geometry instanceof THREE.BufferGeometry ) {
-
-					var attributes = geometry.attributes;
-					var groups = geometry.groups;
-
-					if ( attributes.position === undefined ) continue;
-
-					var positions = attributes.position.array;
-
-					for ( var i = 0, l = positions.length; i < l; i += 3 ) {
-
-						renderList.pushVertex( positions[ i ], positions[ i + 1 ], positions[ i + 2 ] );
-
-					}
-
-					if ( attributes.normal !== undefined ) {
-
-						var normals = attributes.normal.array;
-
-						for ( var i = 0, l = normals.length; i < l; i += 3 ) {
-
-							renderList.pushNormal( normals[ i ], normals[ i + 1 ], normals[ i + 2 ] );
-
-						}
-
-					}
-
-					if ( attributes.uv !== undefined ) {
-
-						var uvs = attributes.uv.array;
-
-						for ( var i = 0, l = uvs.length; i < l; i += 2 ) {
-
-							renderList.pushUv( uvs[ i ], uvs[ i + 1 ] );
-
-						}
-
-					}
-
-					if ( geometry.index !== null ) {
-
-						var indices = geometry.index.array;
-
-						if ( groups.length > 0 ) {
-
-							for ( var g = 0; g < groups.length; g ++ ) {
-
-								var group = groups[ g ];
-
-								for ( var i = group.start, l = group.start + group.count; i < l; i += 3 ) {
-
-									renderList.pushTriangle( indices[ i ], indices[ i + 1 ], indices[ i + 2 ] );
-
-								}
-
-							}
-
-						} else {
-
-							for ( var i = 0, l = indices.length; i < l; i += 3 ) {
-
-								renderList.pushTriangle( indices[ i ], indices[ i + 1 ], indices[ i + 2 ] );
-
-							}
-
-						}
-
-					} else {
-
-						for ( var i = 0, l = positions.length / 3; i < l; i += 3 ) {
-
-							renderList.pushTriangle( i, i + 1, i + 2 );
-
-						}
-
-					}
-
-				} else if ( geometry instanceof THREE.Geometry ) {
-
-					var vertices = geometry.vertices;
-					var faces = geometry.faces;
-					var faceVertexUvs = geometry.faceVertexUvs[ 0 ];
-
-					_normalMatrix.getNormalMatrix( _modelMatrix );
-
-					var material = object.material;
-
-					var isMultiMaterial = Array.isArray( material );
-
-					for ( var v = 0, vl = vertices.length; v < vl; v ++ ) {
-
-						var vertex = vertices[ v ];
-
-						_vector3.copy( vertex );
-
-						if ( material.morphTargets === true ) {
-
-							var morphTargets = geometry.morphTargets;
-							var morphInfluences = object.morphTargetInfluences;
-
-							for ( var t = 0, tl = morphTargets.length; t < tl; t ++ ) {
-
-								var influence = morphInfluences[ t ];
-
-								if ( influence === 0 ) continue;
-
-								var target = morphTargets[ t ];
-								var targetVertex = target.vertices[ v ];
-
-								_vector3.x += ( targetVertex.x - vertex.x ) * influence;
-								_vector3.y += ( targetVertex.y - vertex.y ) * influence;
-								_vector3.z += ( targetVertex.z - vertex.z ) * influence;
-
-							}
-
-						}
-
-						renderList.pushVertex( _vector3.x, _vector3.y, _vector3.z );
-
-					}
-
-					for ( var f = 0, fl = faces.length; f < fl; f ++ ) {
-
-						var face = faces[ f ];
-
-						material = isMultiMaterial === true
-							 ? object.material[ face.materialIndex ]
-							 : object.material;
-
-						if ( material === undefined ) continue;
-
-						var side = material.side;
-
-						var v1 = _vertexPool[ face.a ];
-						var v2 = _vertexPool[ face.b ];
-						var v3 = _vertexPool[ face.c ];
-
-						if ( renderList.checkTriangleVisibility( v1, v2, v3 ) === false ) continue;
-
-						var visible = renderList.checkBackfaceCulling( v1, v2, v3 );
-
-						if ( side !== THREE.DoubleSide ) {
-
-							if ( side === THREE.FrontSide && visible === false ) continue;
-							if ( side === THREE.BackSide && visible === true ) continue;
-
-						}
-
-						_face = getNextFaceInPool();
-
-						_face.id = object.id;
-						_face.v1.copy( v1 );
-						_face.v2.copy( v2 );
-						_face.v3.copy( v3 );
-
-						_face.normalModel.copy( face.normal );
-
-						if ( visible === false && ( side === THREE.BackSide || side === THREE.DoubleSide ) ) {
-
-							_face.normalModel.negate();
-
-						}
-
-						_face.normalModel.applyMatrix3( _normalMatrix ).normalize();
-
-						var faceVertexNormals = face.vertexNormals;
-
-						for ( var n = 0, nl = Math.min( faceVertexNormals.length, 3 ); n < nl; n ++ ) {
-
-							var normalModel = _face.vertexNormalsModel[ n ];
-							normalModel.copy( faceVertexNormals[ n ] );
-
-							if ( visible === false && ( side === THREE.BackSide || side === THREE.DoubleSide ) ) {
-
-								normalModel.negate();
-
-							}
-
-							normalModel.applyMatrix3( _normalMatrix ).normalize();
-
-						}
-
-						_face.vertexNormalsLength = faceVertexNormals.length;
-
-						var vertexUvs = faceVertexUvs[ f ];
-
-						if ( vertexUvs !== undefined ) {
-
-							for ( var u = 0; u < 3; u ++ ) {
-
-								_face.uvs[ u ].copy( vertexUvs[ u ] );
-
-							}
-
-						}
-
-						_face.color = face.color;
-						_face.material = material;
-
-						_face.z = ( v1.positionScreen.z + v2.positionScreen.z + v3.positionScreen.z ) / 3;
-						_face.renderOrder = object.renderOrder;
-
-						_renderData.elements.push( _face );
-
-					}
-
-				}
-
-			} else if ( object instanceof THREE.Line ) {
-
-				_modelViewProjectionMatrix.multiplyMatrices( _viewProjectionMatrix, _modelMatrix );
-
-				if ( geometry instanceof THREE.BufferGeometry ) {
-
-					var attributes = geometry.attributes;
-
-					if ( attributes.position !== undefined ) {
-
-						var positions = attributes.position.array;
-
-						for ( var i = 0, l = positions.length; i < l; i += 3 ) {
-
-							renderList.pushVertex( positions[ i ], positions[ i + 1 ], positions[ i + 2 ] );
-
-						}
-
-						if ( attributes.color !== undefined ) {
-
-							var colors = attributes.color.array;
-
-							for ( var i = 0, l = colors.length; i < l; i += 3 ) {
-
-								renderList.pushColor( colors[ i ], colors[ i + 1 ], colors[ i + 2 ] );
-
-							}
-
-						}
-
-						if ( geometry.index !== null ) {
-
-							var indices = geometry.index.array;
-
-							for ( var i = 0, l = indices.length; i < l; i += 2 ) {
-
-								renderList.pushLine( indices[ i ], indices[ i + 1 ] );
-
-							}
-
-						} else {
-
-							var step = object instanceof THREE.LineSegments ? 2 : 1;
-
-							for ( var i = 0, l = ( positions.length / 3 ) - 1; i < l; i += step ) {
-
-								renderList.pushLine( i, i + 1 );
-
-							}
-
-						}
-
-					}
-
-				} else if ( geometry instanceof THREE.Geometry ) {
-
-					var vertices = object.geometry.vertices;
-
-					if ( vertices.length === 0 ) continue;
-
-					v1 = getNextVertexInPool();
-					v1.positionScreen.copy( vertices[ 0 ] ).applyMatrix4( _modelViewProjectionMatrix );
-
-					var step = object instanceof THREE.LineSegments ? 2 : 1;
-
-					for ( var v = 1, vl = vertices.length; v < vl; v ++ ) {
-
-						v1 = getNextVertexInPool();
-						v1.positionScreen.copy( vertices[ v ] ).applyMatrix4( _modelViewProjectionMatrix );
-
-						if ( ( v + 1 ) % step > 0 ) continue;
-
-						v2 = _vertexPool[ _vertexCount - 2 ];
-
-						_clippedVertex1PositionScreen.copy( v1.positionScreen );
-						_clippedVertex2PositionScreen.copy( v2.positionScreen );
-
-						if ( clipLine( _clippedVertex1PositionScreen, _clippedVertex2PositionScreen ) === true ) {
-
-							// Perform the perspective divide
-							_clippedVertex1PositionScreen.multiplyScalar( 1 / _clippedVertex1PositionScreen.w );
-							_clippedVertex2PositionScreen.multiplyScalar( 1 / _clippedVertex2PositionScreen.w );
-
-							_line = getNextLineInPool();
-
-							_line.id = object.id;
-							_line.v1.positionScreen.copy( _clippedVertex1PositionScreen );
-							_line.v2.positionScreen.copy( _clippedVertex2PositionScreen );
-
-							_line.z = Math.max( _clippedVertex1PositionScreen.z, _clippedVertex2PositionScreen.z );
-							_line.renderOrder = object.renderOrder;
-
-							_line.material = object.material;
-
-							if ( object.material.vertexColors === THREE.VertexColors ) {
-
-								_line.vertexColors[ 0 ].copy( object.geometry.colors[ v ] );
-								_line.vertexColors[ 1 ].copy( object.geometry.colors[ v - 1 ] );
-
-							}
-
-							_renderData.elements.push( _line );
-
-						}
-
-					}
-
-				}
-
-			} else if ( object instanceof THREE.Points ) {
-
-				_modelViewProjectionMatrix.multiplyMatrices( _viewProjectionMatrix, _modelMatrix );
-
-				if ( geometry instanceof THREE.Geometry ) {
-
-					var vertices = object.geometry.vertices;
-
-					for ( var v = 0, vl = vertices.length; v < vl; v ++ ) {
-
-						var vertex = vertices[ v ];
-
-						_vector4.set( vertex.x, vertex.y, vertex.z, 1 );
-						_vector4.applyMatrix4( _modelViewProjectionMatrix );
-
-						pushPoint( _vector4, object, camera );
-
-					}
-
-				} else if ( geometry instanceof THREE.BufferGeometry ) {
-
-					var attributes = geometry.attributes;
-
-					if ( attributes.position !== undefined ) {
-
-						var positions = attributes.position.array;
-
-						for ( var i = 0, l = positions.length; i < l; i += 3 ) {
-
-							_vector4.set( positions[ i ], positions[ i + 1 ], positions[ i + 2 ], 1 );
-							_vector4.applyMatrix4( _modelViewProjectionMatrix );
-
-							pushPoint( _vector4, object, camera );
-
-						}
-
-					}
-
-				}
-
-			} else if ( object instanceof THREE.Sprite ) {
-
-				_vector4.set( _modelMatrix.elements[ 12 ], _modelMatrix.elements[ 13 ], _modelMatrix.elements[ 14 ], 1 );
-				_vector4.applyMatrix4( _viewProjectionMatrix );
-
-				pushPoint( _vector4, object, camera );
-
-			}
-
-		}
-
-		if ( sortElements === true ) {
-
-			_renderData.elements.sort( painterSort );
-
-		}
-
-		return _renderData;
-
-	};
-
-	function pushPoint( _vector4, object, camera ) {
-
-		var invW = 1 / _vector4.w;
-
-		_vector4.z *= invW;
-
-		if ( _vector4.z >= - 1 && _vector4.z <= 1 ) {
-
-			_sprite = getNextSpriteInPool();
-			_sprite.id = object.id;
-			_sprite.x = _vector4.x * invW;
-			_sprite.y = _vector4.y * invW;
-			_sprite.z = _vector4.z;
-			_sprite.renderOrder = object.renderOrder;
-			_sprite.object = object;
-
-			_sprite.rotation = object.rotation;
-
-			_sprite.scale.x = object.scale.x * Math.abs( _sprite.x - ( _vector4.x + camera.projectionMatrix.elements[ 0 ] ) / ( _vector4.w + camera.projectionMatrix.elements[ 12 ] ) );
-			_sprite.scale.y = object.scale.y * Math.abs( _sprite.y - ( _vector4.y + camera.projectionMatrix.elements[ 5 ] ) / ( _vector4.w + camera.projectionMatrix.elements[ 13 ] ) );
-
-			_sprite.material = object.material;
-
-			_renderData.elements.push( _sprite );
-
-		}
-
-	}
-
-	// Pools
-
-	function getNextObjectInPool() {
-
-		if ( _objectCount === _objectPoolLength ) {
-
-			var object = new THREE.RenderableObject();
-			_objectPool.push( object );
-			_objectPoolLength ++;
-			_objectCount ++;
-			return object;
-
-		}
-
-		return _objectPool[ _objectCount ++ ];
-
-	}
-
-	function getNextVertexInPool() {
-
-		if ( _vertexCount === _vertexPoolLength ) {
-
-			var vertex = new THREE.RenderableVertex();
-			_vertexPool.push( vertex );
-			_vertexPoolLength ++;
-			_vertexCount ++;
-			return vertex;
-
-		}
-
-		return _vertexPool[ _vertexCount ++ ];
-
-	}
-
-	function getNextFaceInPool() {
-
-		if ( _faceCount === _facePoolLength ) {
-
-			var face = new THREE.RenderableFace();
-			_facePool.push( face );
-			_facePoolLength ++;
-			_faceCount ++;
-			return face;
-
-		}
-
-		return _facePool[ _faceCount ++ ];
-
-
-	}
-
-	function getNextLineInPool() {
-
-		if ( _lineCount === _linePoolLength ) {
-
-			var line = new THREE.RenderableLine();
-			_linePool.push( line );
-			_linePoolLength ++;
-			_lineCount ++;
-			return line;
-
-		}
-
-		return _linePool[ _lineCount ++ ];
-
-	}
-
-	function getNextSpriteInPool() {
-
-		if ( _spriteCount === _spritePoolLength ) {
-
-			var sprite = new THREE.RenderableSprite();
-			_spritePool.push( sprite );
-			_spritePoolLength ++;
-			_spriteCount ++;
-			return sprite;
-
-		}
-
-		return _spritePool[ _spriteCount ++ ];
-
-	}
-
-	//
-
-	function painterSort( a, b ) {
-
-		if ( a.renderOrder !== b.renderOrder ) {
-
-			return a.renderOrder - b.renderOrder;
-
-		} else if ( a.z !== b.z ) {
-
-			return b.z - a.z;
-
-		} else if ( a.id !== b.id ) {
-
-			return a.id - b.id;
-
-		} else {
-
-			return 0;
-
-		}
-
-	}
-
-	function clipLine( s1, s2 ) {
-
-		var alpha1 = 0, alpha2 = 1,
-
-		// Calculate the boundary coordinate of each vertex for the near and far clip planes,
-		// Z = -1 and Z = +1, respectively.
-
-			bc1near = s1.z + s1.w,
-			bc2near = s2.z + s2.w,
-			bc1far = - s1.z + s1.w,
-			bc2far = - s2.z + s2.w;
-
-		if ( bc1near >= 0 && bc2near >= 0 && bc1far >= 0 && bc2far >= 0 ) {
-
-			// Both vertices lie entirely within all clip planes.
-			return true;
-
-		} else if ( ( bc1near < 0 && bc2near < 0 ) || ( bc1far < 0 && bc2far < 0 ) ) {
-
-			// Both vertices lie entirely outside one of the clip planes.
-			return false;
-
-		} else {
-
-			// The line segment spans at least one clip plane.
-
-			if ( bc1near < 0 ) {
-
-				// v1 lies outside the near plane, v2 inside
-				alpha1 = Math.max( alpha1, bc1near / ( bc1near - bc2near ) );
-
-			} else if ( bc2near < 0 ) {
-
-				// v2 lies outside the near plane, v1 inside
-				alpha2 = Math.min( alpha2, bc1near / ( bc1near - bc2near ) );
-
-			}
-
-			if ( bc1far < 0 ) {
-
-				// v1 lies outside the far plane, v2 inside
-				alpha1 = Math.max( alpha1, bc1far / ( bc1far - bc2far ) );
-
-			} else if ( bc2far < 0 ) {
-
-				// v2 lies outside the far plane, v2 inside
-				alpha2 = Math.min( alpha2, bc1far / ( bc1far - bc2far ) );
-
-			}
-
-			if ( alpha2 < alpha1 ) {
-
-				// The line segment spans two boundaries, but is outside both of them.
-				// (This can't happen when we're only clipping against just near/far but good
-				//  to leave the check here for future usage if other clip planes are added.)
-				return false;
-
-			} else {
-
-				// Update the s1 and s2 vertices to match the clipped line segment.
-				s1.lerp( s2, alpha1 );
-				s2.lerp( s1, 1 - alpha2 );
-
-				return true;
-
-			}
-
-		}
-
-	}
-
-};
diff --git a/demo/libs/dat.gui.min.js b/demo/libs/dat.gui.min.js
index 5b69be5..725fb79 100644
--- a/demo/libs/dat.gui.min.js
+++ b/demo/libs/dat.gui.min.js
@@ -1,8 +1,8 @@
 /**
  * dat-gui JavaScript Controller Library
- * https://github.com/dataarts/dat.gui
+ * http://code.google.com/p/dat-gui
  *
- * Copyright 2016 Data Arts Team, Google Creative Lab
+ * Copyright 2011 Data Arts Team, Google Creative Lab
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -10,5 +10,4 @@
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  */
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diff --git a/demo/libs/stats.min.js b/demo/libs/stats.min.js
index ef000cf..3ddf1e5 100644
--- a/demo/libs/stats.min.js
+++ b/demo/libs/stats.min.js
@@ -1,5 +1,5 @@
 // stats.js - http://github.com/mrdoob/stats.js
-var Stats=function(){function h(a){c.appendChild(a.dom);return a}function k(a){for(var d=0;d<c.children.length;d++)c.children[d].style.display=d===a?"block":"none";l=a}var l=0,c=document.createElement("div");c.style.cssText="position:fixed;top:0;left:0;cursor:pointer;opacity:0.9;z-index:10000";c.addEventListener("click",function(a){a.preventDefault();k(++l%c.children.length)},!1);var g=(performance||Date).now(),e=g,a=0,r=h(new Stats.Panel("FPS","#0ff","#002")),f=h(new Stats.Panel("MS","#0f0","#020"));
-if(self.performance&&self.performance.memory)var t=h(new Stats.Panel("MB","#f08","#201"));k(0);return{REVISION:16,dom:c,addPanel:h,showPanel:k,begin:function(){g=(performance||Date).now()},end:function(){a++;var c=(performance||Date).now();f.update(c-g,200);if(c>e+1E3&&(r.update(1E3*a/(c-e),100),e=c,a=0,t)){var d=performance.memory;t.update(d.usedJSHeapSize/1048576,d.jsHeapSizeLimit/1048576)}return c},update:function(){g=this.end()},domElement:c,setMode:k}};
-Stats.Panel=function(h,k,l){var c=Infinity,g=0,e=Math.round,a=e(window.devicePixelRatio||1),r=80*a,f=48*a,t=3*a,u=2*a,d=3*a,m=15*a,n=74*a,p=30*a,q=document.createElement("canvas");q.width=r;q.height=f;q.style.cssText="width:80px;height:48px";var b=q.getContext("2d");b.font="bold "+9*a+"px Helvetica,Arial,sans-serif";b.textBaseline="top";b.fillStyle=l;b.fillRect(0,0,r,f);b.fillStyle=k;b.fillText(h,t,u);b.fillRect(d,m,n,p);b.fillStyle=l;b.globalAlpha=.9;b.fillRect(d,m,n,p);return{dom:q,update:function(f,
-v){c=Math.min(c,f);g=Math.max(g,f);b.fillStyle=l;b.globalAlpha=1;b.fillRect(0,0,r,m);b.fillStyle=k;b.fillText(e(f)+" "+h+" ("+e(c)+"-"+e(g)+")",t,u);b.drawImage(q,d+a,m,n-a,p,d,m,n-a,p);b.fillRect(d+n-a,m,a,p);b.fillStyle=l;b.globalAlpha=.9;b.fillRect(d+n-a,m,a,e((1-f/v)*p))}}};"object"===typeof module&&(module.exports=Stats);
+(function(f,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"===typeof define&&define.amd?define(e):f.Stats=e()})(this,function(){var f=function(){function e(a){c.appendChild(a.dom);return a}function u(a){for(var d=0;d<c.children.length;d++)c.children[d].style.display=d===a?"block":"none";l=a}var l=0,c=document.createElement("div");c.style.cssText="position:fixed;top:0;left:0;cursor:pointer;opacity:0.9;z-index:10000";c.addEventListener("click",function(a){a.preventDefault();
+u(++l%c.children.length)},!1);var k=(performance||Date).now(),g=k,a=0,r=e(new f.Panel("FPS","#0ff","#002")),h=e(new f.Panel("MS","#0f0","#020"));if(self.performance&&self.performance.memory)var t=e(new f.Panel("MB","#f08","#201"));u(0);return{REVISION:16,dom:c,addPanel:e,showPanel:u,begin:function(){k=(performance||Date).now()},end:function(){a++;var c=(performance||Date).now();h.update(c-k,200);if(c>=g+1E3&&(r.update(1E3*a/(c-g),100),g=c,a=0,t)){var d=performance.memory;t.update(d.usedJSHeapSize/
+1048576,d.jsHeapSizeLimit/1048576)}return c},update:function(){k=this.end()},domElement:c,setMode:u}};f.Panel=function(e,f,l){var c=Infinity,k=0,g=Math.round,a=g(window.devicePixelRatio||1),r=80*a,h=48*a,t=3*a,v=2*a,d=3*a,m=15*a,n=74*a,p=30*a,q=document.createElement("canvas");q.width=r;q.height=h;q.style.cssText="width:80px;height:48px";var b=q.getContext("2d");b.font="bold "+9*a+"px Helvetica,Arial,sans-serif";b.textBaseline="top";b.fillStyle=l;b.fillRect(0,0,r,h);b.fillStyle=f;b.fillText(e,t,v);
+b.fillRect(d,m,n,p);b.fillStyle=l;b.globalAlpha=.9;b.fillRect(d,m,n,p);return{dom:q,update:function(h,w){c=Math.min(c,h);k=Math.max(k,h);b.fillStyle=l;b.globalAlpha=1;b.fillRect(0,0,r,m);b.fillStyle=f;b.fillText(g(h)+" "+e+" ("+g(c)+"-"+g(k)+")",t,v);b.drawImage(q,d+a,m,n-a,p,d,m,n-a,p);b.fillRect(d+n-a,m,a,p);b.fillStyle=l;b.globalAlpha=.9;b.fillRect(d+n-a,m,a,g((1-h/w)*p))}}};return f});
diff --git a/demo/libs/three.js b/demo/libs/three.js
index 23755c9..0b303a0 100644
--- a/demo/libs/three.js
+++ b/demo/libs/three.js
@@ -1,46210 +1,36123 @@
+/**
+ * @license
+ * Copyright 2010-2021 Three.js Authors
+ * SPDX-License-Identifier: MIT
+ */
 (function (global, factory) {
 	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
 	typeof define === 'function' && define.amd ? define(['exports'], factory) :
-	(factory((global.THREE = {})));
+	(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.THREE = {}));
 }(this, (function (exports) { 'use strict';
 
-	// Polyfills
-
-	if ( Number.EPSILON === undefined ) {
+	const REVISION = '130';
+	const MOUSE = {
+		LEFT: 0,
+		MIDDLE: 1,
+		RIGHT: 2,
+		ROTATE: 0,
+		DOLLY: 1,
+		PAN: 2
+	};
+	const TOUCH = {
+		ROTATE: 0,
+		PAN: 1,
+		DOLLY_PAN: 2,
+		DOLLY_ROTATE: 3
+	};
+	const CullFaceNone = 0;
+	const CullFaceBack = 1;
+	const CullFaceFront = 2;
+	const CullFaceFrontBack = 3;
+	const BasicShadowMap = 0;
+	const PCFShadowMap = 1;
+	const PCFSoftShadowMap = 2;
+	const VSMShadowMap = 3;
+	const FrontSide = 0;
+	const BackSide = 1;
+	const DoubleSide = 2;
+	const FlatShading = 1;
+	const SmoothShading = 2;
+	const NoBlending = 0;
+	const NormalBlending = 1;
+	const AdditiveBlending = 2;
+	const SubtractiveBlending = 3;
+	const MultiplyBlending = 4;
+	const CustomBlending = 5;
+	const AddEquation = 100;
+	const SubtractEquation = 101;
+	const ReverseSubtractEquation = 102;
+	const MinEquation = 103;
+	const MaxEquation = 104;
+	const ZeroFactor = 200;
+	const OneFactor = 201;
+	const SrcColorFactor = 202;
+	const OneMinusSrcColorFactor = 203;
+	const SrcAlphaFactor = 204;
+	const OneMinusSrcAlphaFactor = 205;
+	const DstAlphaFactor = 206;
+	const OneMinusDstAlphaFactor = 207;
+	const DstColorFactor = 208;
+	const OneMinusDstColorFactor = 209;
+	const SrcAlphaSaturateFactor = 210;
+	const NeverDepth = 0;
+	const AlwaysDepth = 1;
+	const LessDepth = 2;
+	const LessEqualDepth = 3;
+	const EqualDepth = 4;
+	const GreaterEqualDepth = 5;
+	const GreaterDepth = 6;
+	const NotEqualDepth = 7;
+	const MultiplyOperation = 0;
+	const MixOperation = 1;
+	const AddOperation = 2;
+	const NoToneMapping = 0;
+	const LinearToneMapping = 1;
+	const ReinhardToneMapping = 2;
+	const CineonToneMapping = 3;
+	const ACESFilmicToneMapping = 4;
+	const CustomToneMapping = 5;
+	const UVMapping = 300;
+	const CubeReflectionMapping = 301;
+	const CubeRefractionMapping = 302;
+	const EquirectangularReflectionMapping = 303;
+	const EquirectangularRefractionMapping = 304;
+	const CubeUVReflectionMapping = 306;
+	const CubeUVRefractionMapping = 307;
+	const RepeatWrapping = 1000;
+	const ClampToEdgeWrapping = 1001;
+	const MirroredRepeatWrapping = 1002;
+	const NearestFilter = 1003;
+	const NearestMipmapNearestFilter = 1004;
+	const NearestMipMapNearestFilter = 1004;
+	const NearestMipmapLinearFilter = 1005;
+	const NearestMipMapLinearFilter = 1005;
+	const LinearFilter = 1006;
+	const LinearMipmapNearestFilter = 1007;
+	const LinearMipMapNearestFilter = 1007;
+	const LinearMipmapLinearFilter = 1008;
+	const LinearMipMapLinearFilter = 1008;
+	const UnsignedByteType = 1009;
+	const ByteType = 1010;
+	const ShortType = 1011;
+	const UnsignedShortType = 1012;
+	const IntType = 1013;
+	const UnsignedIntType = 1014;
+	const FloatType = 1015;
+	const HalfFloatType = 1016;
+	const UnsignedShort4444Type = 1017;
+	const UnsignedShort5551Type = 1018;
+	const UnsignedShort565Type = 1019;
+	const UnsignedInt248Type = 1020;
+	const AlphaFormat = 1021;
+	const RGBFormat = 1022;
+	const RGBAFormat = 1023;
+	const LuminanceFormat = 1024;
+	const LuminanceAlphaFormat = 1025;
+	const RGBEFormat = RGBAFormat;
+	const DepthFormat = 1026;
+	const DepthStencilFormat = 1027;
+	const RedFormat = 1028;
+	const RedIntegerFormat = 1029;
+	const RGFormat = 1030;
+	const RGIntegerFormat = 1031;
+	const RGBIntegerFormat = 1032;
+	const RGBAIntegerFormat = 1033;
+	const RGB_S3TC_DXT1_Format = 33776;
+	const RGBA_S3TC_DXT1_Format = 33777;
+	const RGBA_S3TC_DXT3_Format = 33778;
+	const RGBA_S3TC_DXT5_Format = 33779;
+	const RGB_PVRTC_4BPPV1_Format = 35840;
+	const RGB_PVRTC_2BPPV1_Format = 35841;
+	const RGBA_PVRTC_4BPPV1_Format = 35842;
+	const RGBA_PVRTC_2BPPV1_Format = 35843;
+	const RGB_ETC1_Format = 36196;
+	const RGB_ETC2_Format = 37492;
+	const RGBA_ETC2_EAC_Format = 37496;
+	const RGBA_ASTC_4x4_Format = 37808;
+	const RGBA_ASTC_5x4_Format = 37809;
+	const RGBA_ASTC_5x5_Format = 37810;
+	const RGBA_ASTC_6x5_Format = 37811;
+	const RGBA_ASTC_6x6_Format = 37812;
+	const RGBA_ASTC_8x5_Format = 37813;
+	const RGBA_ASTC_8x6_Format = 37814;
+	const RGBA_ASTC_8x8_Format = 37815;
+	const RGBA_ASTC_10x5_Format = 37816;
+	const RGBA_ASTC_10x6_Format = 37817;
+	const RGBA_ASTC_10x8_Format = 37818;
+	const RGBA_ASTC_10x10_Format = 37819;
+	const RGBA_ASTC_12x10_Format = 37820;
+	const RGBA_ASTC_12x12_Format = 37821;
+	const RGBA_BPTC_Format = 36492;
+	const SRGB8_ALPHA8_ASTC_4x4_Format = 37840;
+	const SRGB8_ALPHA8_ASTC_5x4_Format = 37841;
+	const SRGB8_ALPHA8_ASTC_5x5_Format = 37842;
+	const SRGB8_ALPHA8_ASTC_6x5_Format = 37843;
+	const SRGB8_ALPHA8_ASTC_6x6_Format = 37844;
+	const SRGB8_ALPHA8_ASTC_8x5_Format = 37845;
+	const SRGB8_ALPHA8_ASTC_8x6_Format = 37846;
+	const SRGB8_ALPHA8_ASTC_8x8_Format = 37847;
+	const SRGB8_ALPHA8_ASTC_10x5_Format = 37848;
+	const SRGB8_ALPHA8_ASTC_10x6_Format = 37849;
+	const SRGB8_ALPHA8_ASTC_10x8_Format = 37850;
+	const SRGB8_ALPHA8_ASTC_10x10_Format = 37851;
+	const SRGB8_ALPHA8_ASTC_12x10_Format = 37852;
+	const SRGB8_ALPHA8_ASTC_12x12_Format = 37853;
+	const LoopOnce = 2200;
+	const LoopRepeat = 2201;
+	const LoopPingPong = 2202;
+	const InterpolateDiscrete = 2300;
+	const InterpolateLinear = 2301;
+	const InterpolateSmooth = 2302;
+	const ZeroCurvatureEnding = 2400;
+	const ZeroSlopeEnding = 2401;
+	const WrapAroundEnding = 2402;
+	const NormalAnimationBlendMode = 2500;
+	const AdditiveAnimationBlendMode = 2501;
+	const TrianglesDrawMode = 0;
+	const TriangleStripDrawMode = 1;
+	const TriangleFanDrawMode = 2;
+	const LinearEncoding = 3000;
+	const sRGBEncoding = 3001;
+	const GammaEncoding = 3007;
+	const RGBEEncoding = 3002;
+	const LogLuvEncoding = 3003;
+	const RGBM7Encoding = 3004;
+	const RGBM16Encoding = 3005;
+	const RGBDEncoding = 3006;
+	const BasicDepthPacking = 3200;
+	const RGBADepthPacking = 3201;
+	const TangentSpaceNormalMap = 0;
+	const ObjectSpaceNormalMap = 1;
+	const ZeroStencilOp = 0;
+	const KeepStencilOp = 7680;
+	const ReplaceStencilOp = 7681;
+	const IncrementStencilOp = 7682;
+	const DecrementStencilOp = 7683;
+	const IncrementWrapStencilOp = 34055;
+	const DecrementWrapStencilOp = 34056;
+	const InvertStencilOp = 5386;
+	const NeverStencilFunc = 512;
+	const LessStencilFunc = 513;
+	const EqualStencilFunc = 514;
+	const LessEqualStencilFunc = 515;
+	const GreaterStencilFunc = 516;
+	const NotEqualStencilFunc = 517;
+	const GreaterEqualStencilFunc = 518;
+	const AlwaysStencilFunc = 519;
+	const StaticDrawUsage = 35044;
+	const DynamicDrawUsage = 35048;
+	const StreamDrawUsage = 35040;
+	const StaticReadUsage = 35045;
+	const DynamicReadUsage = 35049;
+	const StreamReadUsage = 35041;
+	const StaticCopyUsage = 35046;
+	const DynamicCopyUsage = 35050;
+	const StreamCopyUsage = 35042;
+	const GLSL1 = '100';
+	const GLSL3 = '300 es';
 
-		Number.EPSILON = Math.pow( 2, - 52 );
+	/**
+	 * https://github.com/mrdoob/eventdispatcher.js/
+	 */
+	class EventDispatcher {
+		addEventListener(type, listener) {
+			if (this._listeners === undefined) this._listeners = {};
+			const listeners = this._listeners;
 
-	}
+			if (listeners[type] === undefined) {
+				listeners[type] = [];
+			}
 
-	if ( Number.isInteger === undefined ) {
+			if (listeners[type].indexOf(listener) === -1) {
+				listeners[type].push(listener);
+			}
+		}
 
-		// Missing in IE
-		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isInteger
+		hasEventListener(type, listener) {
+			if (this._listeners === undefined) return false;
+			const listeners = this._listeners;
+			return listeners[type] !== undefined && listeners[type].indexOf(listener) !== -1;
+		}
 
-		Number.isInteger = function ( value ) {
+		removeEventListener(type, listener) {
+			if (this._listeners === undefined) return;
+			const listeners = this._listeners;
+			const listenerArray = listeners[type];
 
-			return typeof value === 'number' && isFinite( value ) && Math.floor( value ) === value;
+			if (listenerArray !== undefined) {
+				const index = listenerArray.indexOf(listener);
 
-		};
+				if (index !== -1) {
+					listenerArray.splice(index, 1);
+				}
+			}
+		}
 
-	}
+		dispatchEvent(event) {
+			if (this._listeners === undefined) return;
+			const listeners = this._listeners;
+			const listenerArray = listeners[event.type];
 
-	//
+			if (listenerArray !== undefined) {
+				event.target = this; // Make a copy, in case listeners are removed while iterating.
 
-	if ( Math.sign === undefined ) {
+				const array = listenerArray.slice(0);
 
-		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/sign
+				for (let i = 0, l = array.length; i < l; i++) {
+					array[i].call(this, event);
+				}
 
-		Math.sign = function ( x ) {
+				event.target = null;
+			}
+		}
 
-			return ( x < 0 ) ? - 1 : ( x > 0 ) ? 1 : + x;
+	}
 
-		};
+	const _lut = [];
 
+	for (let i = 0; i < 256; i++) {
+		_lut[i] = (i < 16 ? '0' : '') + i.toString(16);
 	}
 
-	if ( 'name' in Function.prototype === false ) {
+	let _seed = 1234567;
+	const DEG2RAD = Math.PI / 180;
+	const RAD2DEG = 180 / Math.PI; // http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
 
-		// Missing in IE
-		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name
+	function generateUUID() {
+		const d0 = Math.random() * 0xffffffff | 0;
+		const d1 = Math.random() * 0xffffffff | 0;
+		const d2 = Math.random() * 0xffffffff | 0;
+		const d3 = Math.random() * 0xffffffff | 0;
+		const uuid = _lut[d0 & 0xff] + _lut[d0 >> 8 & 0xff] + _lut[d0 >> 16 & 0xff] + _lut[d0 >> 24 & 0xff] + '-' + _lut[d1 & 0xff] + _lut[d1 >> 8 & 0xff] + '-' + _lut[d1 >> 16 & 0x0f | 0x40] + _lut[d1 >> 24 & 0xff] + '-' + _lut[d2 & 0x3f | 0x80] + _lut[d2 >> 8 & 0xff] + '-' + _lut[d2 >> 16 & 0xff] + _lut[d2 >> 24 & 0xff] + _lut[d3 & 0xff] + _lut[d3 >> 8 & 0xff] + _lut[d3 >> 16 & 0xff] + _lut[d3 >> 24 & 0xff]; // .toUpperCase() here flattens concatenated strings to save heap memory space.
 
-		Object.defineProperty( Function.prototype, 'name', {
+		return uuid.toUpperCase();
+	}
 
-			get: function () {
+	function clamp(value, min, max) {
+		return Math.max(min, Math.min(max, value));
+	} // compute euclidian modulo of m % n
+	// https://en.wikipedia.org/wiki/Modulo_operation
 
-				return this.toString().match( /^\s*function\s*([^\(\s]*)/ )[ 1 ];
 
-			}
+	function euclideanModulo(n, m) {
+		return (n % m + m) % m;
+	} // Linear mapping from range <a1, a2> to range <b1, b2>
 
-		} );
 
-	}
+	function mapLinear(x, a1, a2, b1, b2) {
+		return b1 + (x - a1) * (b2 - b1) / (a2 - a1);
+	} // https://www.gamedev.net/tutorials/programming/general-and-gameplay-programming/inverse-lerp-a-super-useful-yet-often-overlooked-function-r5230/
 
-	if ( Object.assign === undefined ) {
 
-		// Missing in IE
-		// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
+	function inverseLerp(x, y, value) {
+		if (x !== y) {
+			return (value - x) / (y - x);
+		} else {
+			return 0;
+		}
+	} // https://en.wikipedia.org/wiki/Linear_interpolation
 
-		( function () {
 
-			Object.assign = function ( target ) {
+	function lerp(x, y, t) {
+		return (1 - t) * x + t * y;
+	} // http://www.rorydriscoll.com/2016/03/07/frame-rate-independent-damping-using-lerp/
 
-				if ( target === undefined || target === null ) {
 
-					throw new TypeError( 'Cannot convert undefined or null to object' );
+	function damp(x, y, lambda, dt) {
+		return lerp(x, y, 1 - Math.exp(-lambda * dt));
+	} // https://www.desmos.com/calculator/vcsjnyz7x4
 
-				}
 
-				var output = Object( target );
+	function pingpong(x, length = 1) {
+		return length - Math.abs(euclideanModulo(x, length * 2) - length);
+	} // http://en.wikipedia.org/wiki/Smoothstep
 
-				for ( var index = 1; index < arguments.length; index ++ ) {
 
-					var source = arguments[ index ];
+	function smoothstep(x, min, max) {
+		if (x <= min) return 0;
+		if (x >= max) return 1;
+		x = (x - min) / (max - min);
+		return x * x * (3 - 2 * x);
+	}
 
-					if ( source !== undefined && source !== null ) {
+	function smootherstep(x, min, max) {
+		if (x <= min) return 0;
+		if (x >= max) return 1;
+		x = (x - min) / (max - min);
+		return x * x * x * (x * (x * 6 - 15) + 10);
+	} // Random integer from <low, high> interval
 
-						for ( var nextKey in source ) {
 
-							if ( Object.prototype.hasOwnProperty.call( source, nextKey ) ) {
+	function randInt(low, high) {
+		return low + Math.floor(Math.random() * (high - low + 1));
+	} // Random float from <low, high> interval
 
-								output[ nextKey ] = source[ nextKey ];
 
-							}
+	function randFloat(low, high) {
+		return low + Math.random() * (high - low);
+	} // Random float from <-range/2, range/2> interval
 
-						}
 
-					}
+	function randFloatSpread(range) {
+		return range * (0.5 - Math.random());
+	} // Deterministic pseudo-random float in the interval [ 0, 1 ]
 
-				}
 
-				return output;
+	function seededRandom(s) {
+		if (s !== undefined) _seed = s % 2147483647; // Park-Miller algorithm
 
-			};
+		_seed = _seed * 16807 % 2147483647;
+		return (_seed - 1) / 2147483646;
+	}
 
-		} )();
+	function degToRad(degrees) {
+		return degrees * DEG2RAD;
+	}
 
+	function radToDeg(radians) {
+		return radians * RAD2DEG;
 	}
 
-	/**
-	 * https://github.com/mrdoob/eventdispatcher.js/
-	 */
+	function isPowerOfTwo(value) {
+		return (value & value - 1) === 0 && value !== 0;
+	}
 
-	function EventDispatcher() {}
+	function ceilPowerOfTwo(value) {
+		return Math.pow(2, Math.ceil(Math.log(value) / Math.LN2));
+	}
 
-	Object.assign( EventDispatcher.prototype, {
+	function floorPowerOfTwo(value) {
+		return Math.pow(2, Math.floor(Math.log(value) / Math.LN2));
+	}
 
-		addEventListener: function ( type, listener ) {
+	function setQuaternionFromProperEuler(q, a, b, c, order) {
+		// Intrinsic Proper Euler Angles - see https://en.wikipedia.org/wiki/Euler_angles
+		// rotations are applied to the axes in the order specified by 'order'
+		// rotation by angle 'a' is applied first, then by angle 'b', then by angle 'c'
+		// angles are in radians
+		const cos = Math.cos;
+		const sin = Math.sin;
+		const c2 = cos(b / 2);
+		const s2 = sin(b / 2);
+		const c13 = cos((a + c) / 2);
+		const s13 = sin((a + c) / 2);
+		const c1_3 = cos((a - c) / 2);
+		const s1_3 = sin((a - c) / 2);
+		const c3_1 = cos((c - a) / 2);
+		const s3_1 = sin((c - a) / 2);
 
-			if ( this._listeners === undefined ) this._listeners = {};
+		switch (order) {
+			case 'XYX':
+				q.set(c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13);
+				break;
 
-			var listeners = this._listeners;
+			case 'YZY':
+				q.set(s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13);
+				break;
 
-			if ( listeners[ type ] === undefined ) {
+			case 'ZXZ':
+				q.set(s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13);
+				break;
 
-				listeners[ type ] = [];
+			case 'XZX':
+				q.set(c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13);
+				break;
 
-			}
+			case 'YXY':
+				q.set(s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13);
+				break;
 
-			if ( listeners[ type ].indexOf( listener ) === - 1 ) {
+			case 'ZYZ':
+				q.set(s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13);
+				break;
 
-				listeners[ type ].push( listener );
+			default:
+				console.warn('THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order);
+		}
+	}
+
+	var MathUtils = /*#__PURE__*/Object.freeze({
+		__proto__: null,
+		DEG2RAD: DEG2RAD,
+		RAD2DEG: RAD2DEG,
+		generateUUID: generateUUID,
+		clamp: clamp,
+		euclideanModulo: euclideanModulo,
+		mapLinear: mapLinear,
+		inverseLerp: inverseLerp,
+		lerp: lerp,
+		damp: damp,
+		pingpong: pingpong,
+		smoothstep: smoothstep,
+		smootherstep: smootherstep,
+		randInt: randInt,
+		randFloat: randFloat,
+		randFloatSpread: randFloatSpread,
+		seededRandom: seededRandom,
+		degToRad: degToRad,
+		radToDeg: radToDeg,
+		isPowerOfTwo: isPowerOfTwo,
+		ceilPowerOfTwo: ceilPowerOfTwo,
+		floorPowerOfTwo: floorPowerOfTwo,
+		setQuaternionFromProperEuler: setQuaternionFromProperEuler
+	});
 
-			}
+	class Vector2 {
+		constructor(x = 0, y = 0) {
+			this.x = x;
+			this.y = y;
+		}
 
-		},
+		get width() {
+			return this.x;
+		}
 
-		hasEventListener: function ( type, listener ) {
+		set width(value) {
+			this.x = value;
+		}
 
-			if ( this._listeners === undefined ) return false;
+		get height() {
+			return this.y;
+		}
 
-			var listeners = this._listeners;
+		set height(value) {
+			this.y = value;
+		}
 
-			return listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;
+		set(x, y) {
+			this.x = x;
+			this.y = y;
+			return this;
+		}
 
-		},
+		setScalar(scalar) {
+			this.x = scalar;
+			this.y = scalar;
+			return this;
+		}
 
-		removeEventListener: function ( type, listener ) {
+		setX(x) {
+			this.x = x;
+			return this;
+		}
 
-			if ( this._listeners === undefined ) return;
+		setY(y) {
+			this.y = y;
+			return this;
+		}
 
-			var listeners = this._listeners;
-			var listenerArray = listeners[ type ];
+		setComponent(index, value) {
+			switch (index) {
+				case 0:
+					this.x = value;
+					break;
 
-			if ( listenerArray !== undefined ) {
+				case 1:
+					this.y = value;
+					break;
 
-				var index = listenerArray.indexOf( listener );
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
 
-				if ( index !== - 1 ) {
+			return this;
+		}
 
-					listenerArray.splice( index, 1 );
+		getComponent(index) {
+			switch (index) {
+				case 0:
+					return this.x;
 
-				}
+				case 1:
+					return this.y;
 
+				default:
+					throw new Error('index is out of range: ' + index);
 			}
+		}
 
-		},
-
-		dispatchEvent: function ( event ) {
-
-			if ( this._listeners === undefined ) return;
-
-			var listeners = this._listeners;
-			var listenerArray = listeners[ event.type ];
-
-			if ( listenerArray !== undefined ) {
-
-				event.target = this;
-
-				var array = listenerArray.slice( 0 );
-
-				for ( var i = 0, l = array.length; i < l; i ++ ) {
-
-					array[ i ].call( this, event );
-
-				}
-
-			}
-
-		}
-
-	} );
-
-	var REVISION = '91';
-	var MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2 };
-	var CullFaceNone = 0;
-	var CullFaceBack = 1;
-	var CullFaceFront = 2;
-	var CullFaceFrontBack = 3;
-	var FrontFaceDirectionCW = 0;
-	var FrontFaceDirectionCCW = 1;
-	var BasicShadowMap = 0;
-	var PCFShadowMap = 1;
-	var PCFSoftShadowMap = 2;
-	var FrontSide = 0;
-	var BackSide = 1;
-	var DoubleSide = 2;
-	var FlatShading = 1;
-	var SmoothShading = 2;
-	var NoColors = 0;
-	var FaceColors = 1;
-	var VertexColors = 2;
-	var NoBlending = 0;
-	var NormalBlending = 1;
-	var AdditiveBlending = 2;
-	var SubtractiveBlending = 3;
-	var MultiplyBlending = 4;
-	var CustomBlending = 5;
-	var AddEquation = 100;
-	var SubtractEquation = 101;
-	var ReverseSubtractEquation = 102;
-	var MinEquation = 103;
-	var MaxEquation = 104;
-	var ZeroFactor = 200;
-	var OneFactor = 201;
-	var SrcColorFactor = 202;
-	var OneMinusSrcColorFactor = 203;
-	var SrcAlphaFactor = 204;
-	var OneMinusSrcAlphaFactor = 205;
-	var DstAlphaFactor = 206;
-	var OneMinusDstAlphaFactor = 207;
-	var DstColorFactor = 208;
-	var OneMinusDstColorFactor = 209;
-	var SrcAlphaSaturateFactor = 210;
-	var NeverDepth = 0;
-	var AlwaysDepth = 1;
-	var LessDepth = 2;
-	var LessEqualDepth = 3;
-	var EqualDepth = 4;
-	var GreaterEqualDepth = 5;
-	var GreaterDepth = 6;
-	var NotEqualDepth = 7;
-	var MultiplyOperation = 0;
-	var MixOperation = 1;
-	var AddOperation = 2;
-	var NoToneMapping = 0;
-	var LinearToneMapping = 1;
-	var ReinhardToneMapping = 2;
-	var Uncharted2ToneMapping = 3;
-	var CineonToneMapping = 4;
-	var UVMapping = 300;
-	var CubeReflectionMapping = 301;
-	var CubeRefractionMapping = 302;
-	var EquirectangularReflectionMapping = 303;
-	var EquirectangularRefractionMapping = 304;
-	var SphericalReflectionMapping = 305;
-	var CubeUVReflectionMapping = 306;
-	var CubeUVRefractionMapping = 307;
-	var RepeatWrapping = 1000;
-	var ClampToEdgeWrapping = 1001;
-	var MirroredRepeatWrapping = 1002;
-	var NearestFilter = 1003;
-	var NearestMipMapNearestFilter = 1004;
-	var NearestMipMapLinearFilter = 1005;
-	var LinearFilter = 1006;
-	var LinearMipMapNearestFilter = 1007;
-	var LinearMipMapLinearFilter = 1008;
-	var UnsignedByteType = 1009;
-	var ByteType = 1010;
-	var ShortType = 1011;
-	var UnsignedShortType = 1012;
-	var IntType = 1013;
-	var UnsignedIntType = 1014;
-	var FloatType = 1015;
-	var HalfFloatType = 1016;
-	var UnsignedShort4444Type = 1017;
-	var UnsignedShort5551Type = 1018;
-	var UnsignedShort565Type = 1019;
-	var UnsignedInt248Type = 1020;
-	var AlphaFormat = 1021;
-	var RGBFormat = 1022;
-	var RGBAFormat = 1023;
-	var LuminanceFormat = 1024;
-	var LuminanceAlphaFormat = 1025;
-	var RGBEFormat = RGBAFormat;
-	var DepthFormat = 1026;
-	var DepthStencilFormat = 1027;
-	var RGB_S3TC_DXT1_Format = 33776;
-	var RGBA_S3TC_DXT1_Format = 33777;
-	var RGBA_S3TC_DXT3_Format = 33778;
-	var RGBA_S3TC_DXT5_Format = 33779;
-	var RGB_PVRTC_4BPPV1_Format = 35840;
-	var RGB_PVRTC_2BPPV1_Format = 35841;
-	var RGBA_PVRTC_4BPPV1_Format = 35842;
-	var RGBA_PVRTC_2BPPV1_Format = 35843;
-	var RGB_ETC1_Format = 36196;
-	var RGBA_ASTC_4x4_Format = 37808;
-	var RGBA_ASTC_5x4_Format = 37809;
-	var RGBA_ASTC_5x5_Format = 37810;
-	var RGBA_ASTC_6x5_Format = 37811;
-	var RGBA_ASTC_6x6_Format = 37812;
-	var RGBA_ASTC_8x5_Format = 37813;
-	var RGBA_ASTC_8x6_Format = 37814;
-	var RGBA_ASTC_8x8_Format = 37815;
-	var RGBA_ASTC_10x5_Format = 37816;
-	var RGBA_ASTC_10x6_Format = 37817;
-	var RGBA_ASTC_10x8_Format = 37818;
-	var RGBA_ASTC_10x10_Format = 37819;
-	var RGBA_ASTC_12x10_Format = 37820;
-	var RGBA_ASTC_12x12_Format = 37821;
-	var LoopOnce = 2200;
-	var LoopRepeat = 2201;
-	var LoopPingPong = 2202;
-	var InterpolateDiscrete = 2300;
-	var InterpolateLinear = 2301;
-	var InterpolateSmooth = 2302;
-	var ZeroCurvatureEnding = 2400;
-	var ZeroSlopeEnding = 2401;
-	var WrapAroundEnding = 2402;
-	var TrianglesDrawMode = 0;
-	var TriangleStripDrawMode = 1;
-	var TriangleFanDrawMode = 2;
-	var LinearEncoding = 3000;
-	var sRGBEncoding = 3001;
-	var GammaEncoding = 3007;
-	var RGBEEncoding = 3002;
-	var LogLuvEncoding = 3003;
-	var RGBM7Encoding = 3004;
-	var RGBM16Encoding = 3005;
-	var RGBDEncoding = 3006;
-	var BasicDepthPacking = 3200;
-	var RGBADepthPacking = 3201;
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	var _Math = {
+		clone() {
+			return new this.constructor(this.x, this.y);
+		}
 
-		DEG2RAD: Math.PI / 180,
-		RAD2DEG: 180 / Math.PI,
+		copy(v) {
+			this.x = v.x;
+			this.y = v.y;
+			return this;
+		}
 
-		generateUUID: ( function () {
+		add(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
+				return this.addVectors(v, w);
+			}
 
-			// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
+			this.x += v.x;
+			this.y += v.y;
+			return this;
+		}
 
-			var lut = [];
+		addScalar(s) {
+			this.x += s;
+			this.y += s;
+			return this;
+		}
 
-			for ( var i = 0; i < 256; i ++ ) {
+		addVectors(a, b) {
+			this.x = a.x + b.x;
+			this.y = a.y + b.y;
+			return this;
+		}
 
-				lut[ i ] = ( i < 16 ? '0' : '' ) + ( i ).toString( 16 ).toUpperCase();
+		addScaledVector(v, s) {
+			this.x += v.x * s;
+			this.y += v.y * s;
+			return this;
+		}
 
+		sub(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.');
+				return this.subVectors(v, w);
 			}
 
-			return function generateUUID() {
-
-				var d0 = Math.random() * 0xffffffff | 0;
-				var d1 = Math.random() * 0xffffffff | 0;
-				var d2 = Math.random() * 0xffffffff | 0;
-				var d3 = Math.random() * 0xffffffff | 0;
-				return lut[ d0 & 0xff ] + lut[ d0 >> 8 & 0xff ] + lut[ d0 >> 16 & 0xff ] + lut[ d0 >> 24 & 0xff ] + '-' +
-					lut[ d1 & 0xff ] + lut[ d1 >> 8 & 0xff ] + '-' + lut[ d1 >> 16 & 0x0f | 0x40 ] + lut[ d1 >> 24 & 0xff ] + '-' +
-					lut[ d2 & 0x3f | 0x80 ] + lut[ d2 >> 8 & 0xff ] + '-' + lut[ d2 >> 16 & 0xff ] + lut[ d2 >> 24 & 0xff ] +
-					lut[ d3 & 0xff ] + lut[ d3 >> 8 & 0xff ] + lut[ d3 >> 16 & 0xff ] + lut[ d3 >> 24 & 0xff ];
-
-			};
-
-		} )(),
+			this.x -= v.x;
+			this.y -= v.y;
+			return this;
+		}
 
-		clamp: function ( value, min, max ) {
+		subScalar(s) {
+			this.x -= s;
+			this.y -= s;
+			return this;
+		}
 
-			return Math.max( min, Math.min( max, value ) );
+		subVectors(a, b) {
+			this.x = a.x - b.x;
+			this.y = a.y - b.y;
+			return this;
+		}
 
-		},
+		multiply(v) {
+			this.x *= v.x;
+			this.y *= v.y;
+			return this;
+		}
 
-		// compute euclidian modulo of m % n
-		// https://en.wikipedia.org/wiki/Modulo_operation
+		multiplyScalar(scalar) {
+			this.x *= scalar;
+			this.y *= scalar;
+			return this;
+		}
 
-		euclideanModulo: function ( n, m ) {
+		divide(v) {
+			this.x /= v.x;
+			this.y /= v.y;
+			return this;
+		}
 
-			return ( ( n % m ) + m ) % m;
+		divideScalar(scalar) {
+			return this.multiplyScalar(1 / scalar);
+		}
 
-		},
+		applyMatrix3(m) {
+			const x = this.x,
+						y = this.y;
+			const e = m.elements;
+			this.x = e[0] * x + e[3] * y + e[6];
+			this.y = e[1] * x + e[4] * y + e[7];
+			return this;
+		}
 
-		// Linear mapping from range <a1, a2> to range <b1, b2>
+		min(v) {
+			this.x = Math.min(this.x, v.x);
+			this.y = Math.min(this.y, v.y);
+			return this;
+		}
 
-		mapLinear: function ( x, a1, a2, b1, b2 ) {
+		max(v) {
+			this.x = Math.max(this.x, v.x);
+			this.y = Math.max(this.y, v.y);
+			return this;
+		}
 
-			return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );
+		clamp(min, max) {
+			// assumes min < max, componentwise
+			this.x = Math.max(min.x, Math.min(max.x, this.x));
+			this.y = Math.max(min.y, Math.min(max.y, this.y));
+			return this;
+		}
 
-		},
+		clampScalar(minVal, maxVal) {
+			this.x = Math.max(minVal, Math.min(maxVal, this.x));
+			this.y = Math.max(minVal, Math.min(maxVal, this.y));
+			return this;
+		}
 
-		// https://en.wikipedia.org/wiki/Linear_interpolation
+		clampLength(min, max) {
+			const length = this.length();
+			return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
+		}
 
-		lerp: function ( x, y, t ) {
+		floor() {
+			this.x = Math.floor(this.x);
+			this.y = Math.floor(this.y);
+			return this;
+		}
 
-			return ( 1 - t ) * x + t * y;
+		ceil() {
+			this.x = Math.ceil(this.x);
+			this.y = Math.ceil(this.y);
+			return this;
+		}
 
-		},
+		round() {
+			this.x = Math.round(this.x);
+			this.y = Math.round(this.y);
+			return this;
+		}
 
-		// http://en.wikipedia.org/wiki/Smoothstep
+		roundToZero() {
+			this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
+			this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
+			return this;
+		}
 
-		smoothstep: function ( x, min, max ) {
+		negate() {
+			this.x = -this.x;
+			this.y = -this.y;
+			return this;
+		}
 
-			if ( x <= min ) return 0;
-			if ( x >= max ) return 1;
+		dot(v) {
+			return this.x * v.x + this.y * v.y;
+		}
 
-			x = ( x - min ) / ( max - min );
+		cross(v) {
+			return this.x * v.y - this.y * v.x;
+		}
 
-			return x * x * ( 3 - 2 * x );
+		lengthSq() {
+			return this.x * this.x + this.y * this.y;
+		}
 
-		},
+		length() {
+			return Math.sqrt(this.x * this.x + this.y * this.y);
+		}
 
-		smootherstep: function ( x, min, max ) {
+		manhattanLength() {
+			return Math.abs(this.x) + Math.abs(this.y);
+		}
 
-			if ( x <= min ) return 0;
-			if ( x >= max ) return 1;
+		normalize() {
+			return this.divideScalar(this.length() || 1);
+		}
 
-			x = ( x - min ) / ( max - min );
+		angle() {
+			// computes the angle in radians with respect to the positive x-axis
+			const angle = Math.atan2(-this.y, -this.x) + Math.PI;
+			return angle;
+		}
 
-			return x * x * x * ( x * ( x * 6 - 15 ) + 10 );
+		distanceTo(v) {
+			return Math.sqrt(this.distanceToSquared(v));
+		}
 
-		},
+		distanceToSquared(v) {
+			const dx = this.x - v.x,
+						dy = this.y - v.y;
+			return dx * dx + dy * dy;
+		}
 
-		// Random integer from <low, high> interval
+		manhattanDistanceTo(v) {
+			return Math.abs(this.x - v.x) + Math.abs(this.y - v.y);
+		}
 
-		randInt: function ( low, high ) {
+		setLength(length) {
+			return this.normalize().multiplyScalar(length);
+		}
 
-			return low + Math.floor( Math.random() * ( high - low + 1 ) );
+		lerp(v, alpha) {
+			this.x += (v.x - this.x) * alpha;
+			this.y += (v.y - this.y) * alpha;
+			return this;
+		}
 
-		},
+		lerpVectors(v1, v2, alpha) {
+			this.x = v1.x + (v2.x - v1.x) * alpha;
+			this.y = v1.y + (v2.y - v1.y) * alpha;
+			return this;
+		}
 
-		// Random float from <low, high> interval
+		equals(v) {
+			return v.x === this.x && v.y === this.y;
+		}
 
-		randFloat: function ( low, high ) {
+		fromArray(array, offset = 0) {
+			this.x = array[offset];
+			this.y = array[offset + 1];
+			return this;
+		}
 
-			return low + Math.random() * ( high - low );
+		toArray(array = [], offset = 0) {
+			array[offset] = this.x;
+			array[offset + 1] = this.y;
+			return array;
+		}
 
-		},
+		fromBufferAttribute(attribute, index, offset) {
+			if (offset !== undefined) {
+				console.warn('THREE.Vector2: offset has been removed from .fromBufferAttribute().');
+			}
 
-		// Random float from <-range/2, range/2> interval
+			this.x = attribute.getX(index);
+			this.y = attribute.getY(index);
+			return this;
+		}
 
-		randFloatSpread: function ( range ) {
+		rotateAround(center, angle) {
+			const c = Math.cos(angle),
+						s = Math.sin(angle);
+			const x = this.x - center.x;
+			const y = this.y - center.y;
+			this.x = x * c - y * s + center.x;
+			this.y = x * s + y * c + center.y;
+			return this;
+		}
 
-			return range * ( 0.5 - Math.random() );
+		random() {
+			this.x = Math.random();
+			this.y = Math.random();
+			return this;
+		}
 
-		},
+	}
 
-		degToRad: function ( degrees ) {
+	Vector2.prototype.isVector2 = true;
 
-			return degrees * _Math.DEG2RAD;
+	class Matrix3 {
+		constructor() {
+			this.elements = [1, 0, 0, 0, 1, 0, 0, 0, 1];
 
-		},
+			if (arguments.length > 0) {
+				console.error('THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.');
+			}
+		}
 
-		radToDeg: function ( radians ) {
+		set(n11, n12, n13, n21, n22, n23, n31, n32, n33) {
+			const te = this.elements;
+			te[0] = n11;
+			te[1] = n21;
+			te[2] = n31;
+			te[3] = n12;
+			te[4] = n22;
+			te[5] = n32;
+			te[6] = n13;
+			te[7] = n23;
+			te[8] = n33;
+			return this;
+		}
 
-			return radians * _Math.RAD2DEG;
+		identity() {
+			this.set(1, 0, 0, 0, 1, 0, 0, 0, 1);
+			return this;
+		}
 
-		},
+		copy(m) {
+			const te = this.elements;
+			const me = m.elements;
+			te[0] = me[0];
+			te[1] = me[1];
+			te[2] = me[2];
+			te[3] = me[3];
+			te[4] = me[4];
+			te[5] = me[5];
+			te[6] = me[6];
+			te[7] = me[7];
+			te[8] = me[8];
+			return this;
+		}
 
-		isPowerOfTwo: function ( value ) {
+		extractBasis(xAxis, yAxis, zAxis) {
+			xAxis.setFromMatrix3Column(this, 0);
+			yAxis.setFromMatrix3Column(this, 1);
+			zAxis.setFromMatrix3Column(this, 2);
+			return this;
+		}
 
-			return ( value & ( value - 1 ) ) === 0 && value !== 0;
+		setFromMatrix4(m) {
+			const me = m.elements;
+			this.set(me[0], me[4], me[8], me[1], me[5], me[9], me[2], me[6], me[10]);
+			return this;
+		}
 
-		},
+		multiply(m) {
+			return this.multiplyMatrices(this, m);
+		}
 
-		ceilPowerOfTwo: function ( value ) {
+		premultiply(m) {
+			return this.multiplyMatrices(m, this);
+		}
 
-			return Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );
+		multiplyMatrices(a, b) {
+			const ae = a.elements;
+			const be = b.elements;
+			const te = this.elements;
+			const a11 = ae[0],
+						a12 = ae[3],
+						a13 = ae[6];
+			const a21 = ae[1],
+						a22 = ae[4],
+						a23 = ae[7];
+			const a31 = ae[2],
+						a32 = ae[5],
+						a33 = ae[8];
+			const b11 = be[0],
+						b12 = be[3],
+						b13 = be[6];
+			const b21 = be[1],
+						b22 = be[4],
+						b23 = be[7];
+			const b31 = be[2],
+						b32 = be[5],
+						b33 = be[8];
+			te[0] = a11 * b11 + a12 * b21 + a13 * b31;
+			te[3] = a11 * b12 + a12 * b22 + a13 * b32;
+			te[6] = a11 * b13 + a12 * b23 + a13 * b33;
+			te[1] = a21 * b11 + a22 * b21 + a23 * b31;
+			te[4] = a21 * b12 + a22 * b22 + a23 * b32;
+			te[7] = a21 * b13 + a22 * b23 + a23 * b33;
+			te[2] = a31 * b11 + a32 * b21 + a33 * b31;
+			te[5] = a31 * b12 + a32 * b22 + a33 * b32;
+			te[8] = a31 * b13 + a32 * b23 + a33 * b33;
+			return this;
+		}
 
-		},
+		multiplyScalar(s) {
+			const te = this.elements;
+			te[0] *= s;
+			te[3] *= s;
+			te[6] *= s;
+			te[1] *= s;
+			te[4] *= s;
+			te[7] *= s;
+			te[2] *= s;
+			te[5] *= s;
+			te[8] *= s;
+			return this;
+		}
+
+		determinant() {
+			const te = this.elements;
+			const a = te[0],
+						b = te[1],
+						c = te[2],
+						d = te[3],
+						e = te[4],
+						f = te[5],
+						g = te[6],
+						h = te[7],
+						i = te[8];
+			return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
+		}
 
-		floorPowerOfTwo: function ( value ) {
+		invert() {
+			const te = this.elements,
+						n11 = te[0],
+						n21 = te[1],
+						n31 = te[2],
+						n12 = te[3],
+						n22 = te[4],
+						n32 = te[5],
+						n13 = te[6],
+						n23 = te[7],
+						n33 = te[8],
+						t11 = n33 * n22 - n32 * n23,
+						t12 = n32 * n13 - n33 * n12,
+						t13 = n23 * n12 - n22 * n13,
+						det = n11 * t11 + n21 * t12 + n31 * t13;
+			if (det === 0) return this.set(0, 0, 0, 0, 0, 0, 0, 0, 0);
+			const detInv = 1 / det;
+			te[0] = t11 * detInv;
+			te[1] = (n31 * n23 - n33 * n21) * detInv;
+			te[2] = (n32 * n21 - n31 * n22) * detInv;
+			te[3] = t12 * detInv;
+			te[4] = (n33 * n11 - n31 * n13) * detInv;
+			te[5] = (n31 * n12 - n32 * n11) * detInv;
+			te[6] = t13 * detInv;
+			te[7] = (n21 * n13 - n23 * n11) * detInv;
+			te[8] = (n22 * n11 - n21 * n12) * detInv;
+			return this;
+		}
+
+		transpose() {
+			let tmp;
+			const m = this.elements;
+			tmp = m[1];
+			m[1] = m[3];
+			m[3] = tmp;
+			tmp = m[2];
+			m[2] = m[6];
+			m[6] = tmp;
+			tmp = m[5];
+			m[5] = m[7];
+			m[7] = tmp;
+			return this;
+		}
+
+		getNormalMatrix(matrix4) {
+			return this.setFromMatrix4(matrix4).invert().transpose();
+		}
+
+		transposeIntoArray(r) {
+			const m = this.elements;
+			r[0] = m[0];
+			r[1] = m[3];
+			r[2] = m[6];
+			r[3] = m[1];
+			r[4] = m[4];
+			r[5] = m[7];
+			r[6] = m[2];
+			r[7] = m[5];
+			r[8] = m[8];
+			return this;
+		}
+
+		setUvTransform(tx, ty, sx, sy, rotation, cx, cy) {
+			const c = Math.cos(rotation);
+			const s = Math.sin(rotation);
+			this.set(sx * c, sx * s, -sx * (c * cx + s * cy) + cx + tx, -sy * s, sy * c, -sy * (-s * cx + c * cy) + cy + ty, 0, 0, 1);
+			return this;
+		}
+
+		scale(sx, sy) {
+			const te = this.elements;
+			te[0] *= sx;
+			te[3] *= sx;
+			te[6] *= sx;
+			te[1] *= sy;
+			te[4] *= sy;
+			te[7] *= sy;
+			return this;
+		}
+
+		rotate(theta) {
+			const c = Math.cos(theta);
+			const s = Math.sin(theta);
+			const te = this.elements;
+			const a11 = te[0],
+						a12 = te[3],
+						a13 = te[6];
+			const a21 = te[1],
+						a22 = te[4],
+						a23 = te[7];
+			te[0] = c * a11 + s * a21;
+			te[3] = c * a12 + s * a22;
+			te[6] = c * a13 + s * a23;
+			te[1] = -s * a11 + c * a21;
+			te[4] = -s * a12 + c * a22;
+			te[7] = -s * a13 + c * a23;
+			return this;
+		}
+
+		translate(tx, ty) {
+			const te = this.elements;
+			te[0] += tx * te[2];
+			te[3] += tx * te[5];
+			te[6] += tx * te[8];
+			te[1] += ty * te[2];
+			te[4] += ty * te[5];
+			te[7] += ty * te[8];
+			return this;
+		}
+
+		equals(matrix) {
+			const te = this.elements;
+			const me = matrix.elements;
 
-			return Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );
+			for (let i = 0; i < 9; i++) {
+				if (te[i] !== me[i]) return false;
+			}
 
+			return true;
 		}
 
-	};
+		fromArray(array, offset = 0) {
+			for (let i = 0; i < 9; i++) {
+				this.elements[i] = array[i + offset];
+			}
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author philogb / http://blog.thejit.org/
-	 * @author egraether / http://egraether.com/
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 */
+			return this;
+		}
 
-	function Vector2( x, y ) {
+		toArray(array = [], offset = 0) {
+			const te = this.elements;
+			array[offset] = te[0];
+			array[offset + 1] = te[1];
+			array[offset + 2] = te[2];
+			array[offset + 3] = te[3];
+			array[offset + 4] = te[4];
+			array[offset + 5] = te[5];
+			array[offset + 6] = te[6];
+			array[offset + 7] = te[7];
+			array[offset + 8] = te[8];
+			return array;
+		}
 
-		this.x = x || 0;
-		this.y = y || 0;
+		clone() {
+			return new this.constructor().fromArray(this.elements);
+		}
 
 	}
 
-	Object.defineProperties( Vector2.prototype, {
+	Matrix3.prototype.isMatrix3 = true;
 
-		"width": {
+	let _canvas;
 
-			get: function () {
+	class ImageUtils {
+		static getDataURL(image) {
+			if (/^data:/i.test(image.src)) {
+				return image.src;
+			}
 
-				return this.x;
+			if (typeof HTMLCanvasElement == 'undefined') {
+				return image.src;
+			}
 
-			},
+			let canvas;
+
+			if (image instanceof HTMLCanvasElement) {
+				canvas = image;
+			} else {
+				if (_canvas === undefined) _canvas = document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas');
+				_canvas.width = image.width;
+				_canvas.height = image.height;
 
-			set: function ( value ) {
+				const context = _canvas.getContext('2d');
 
-				this.x = value;
+				if (image instanceof ImageData) {
+					context.putImageData(image, 0, 0);
+				} else {
+					context.drawImage(image, 0, 0, image.width, image.height);
+				}
 
+				canvas = _canvas;
 			}
 
-		},
+			if (canvas.width > 2048 || canvas.height > 2048) {
+				console.warn('THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons', image);
+				return canvas.toDataURL('image/jpeg', 0.6);
+			} else {
+				return canvas.toDataURL('image/png');
+			}
+		}
+
+	}
+
+	let textureId = 0;
+
+	class Texture extends EventDispatcher {
+		constructor(image = Texture.DEFAULT_IMAGE, mapping = Texture.DEFAULT_MAPPING, wrapS = ClampToEdgeWrapping, wrapT = ClampToEdgeWrapping, magFilter = LinearFilter, minFilter = LinearMipmapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = 1, encoding = LinearEncoding) {
+			super();
+			Object.defineProperty(this, 'id', {
+				value: textureId++
+			});
+			this.uuid = generateUUID();
+			this.name = '';
+			this.image = image;
+			this.mipmaps = [];
+			this.mapping = mapping;
+			this.wrapS = wrapS;
+			this.wrapT = wrapT;
+			this.magFilter = magFilter;
+			this.minFilter = minFilter;
+			this.anisotropy = anisotropy;
+			this.format = format;
+			this.internalFormat = null;
+			this.type = type;
+			this.offset = new Vector2(0, 0);
+			this.repeat = new Vector2(1, 1);
+			this.center = new Vector2(0, 0);
+			this.rotation = 0;
+			this.matrixAutoUpdate = true;
+			this.matrix = new Matrix3();
+			this.generateMipmaps = true;
+			this.premultiplyAlpha = false;
+			this.flipY = true;
+			this.unpackAlignment = 4; // valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)
+			// Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.
+			//
+			// Also changing the encoding after already used by a Material will not automatically make the Material
+			// update. You need to explicitly call Material.needsUpdate to trigger it to recompile.
 
-		"height": {
+			this.encoding = encoding;
+			this.version = 0;
+			this.onUpdate = null;
+		}
 
-			get: function () {
+		updateMatrix() {
+			this.matrix.setUvTransform(this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y);
+		}
 
-				return this.y;
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-			},
+		copy(source) {
+			this.name = source.name;
+			this.image = source.image;
+			this.mipmaps = source.mipmaps.slice(0);
+			this.mapping = source.mapping;
+			this.wrapS = source.wrapS;
+			this.wrapT = source.wrapT;
+			this.magFilter = source.magFilter;
+			this.minFilter = source.minFilter;
+			this.anisotropy = source.anisotropy;
+			this.format = source.format;
+			this.internalFormat = source.internalFormat;
+			this.type = source.type;
+			this.offset.copy(source.offset);
+			this.repeat.copy(source.repeat);
+			this.center.copy(source.center);
+			this.rotation = source.rotation;
+			this.matrixAutoUpdate = source.matrixAutoUpdate;
+			this.matrix.copy(source.matrix);
+			this.generateMipmaps = source.generateMipmaps;
+			this.premultiplyAlpha = source.premultiplyAlpha;
+			this.flipY = source.flipY;
+			this.unpackAlignment = source.unpackAlignment;
+			this.encoding = source.encoding;
+			return this;
+		}
+
+		toJSON(meta) {
+			const isRootObject = meta === undefined || typeof meta === 'string';
+
+			if (!isRootObject && meta.textures[this.uuid] !== undefined) {
+				return meta.textures[this.uuid];
+			}
+
+			const output = {
+				metadata: {
+					version: 4.5,
+					type: 'Texture',
+					generator: 'Texture.toJSON'
+				},
+				uuid: this.uuid,
+				name: this.name,
+				mapping: this.mapping,
+				repeat: [this.repeat.x, this.repeat.y],
+				offset: [this.offset.x, this.offset.y],
+				center: [this.center.x, this.center.y],
+				rotation: this.rotation,
+				wrap: [this.wrapS, this.wrapT],
+				format: this.format,
+				type: this.type,
+				encoding: this.encoding,
+				minFilter: this.minFilter,
+				magFilter: this.magFilter,
+				anisotropy: this.anisotropy,
+				flipY: this.flipY,
+				premultiplyAlpha: this.premultiplyAlpha,
+				unpackAlignment: this.unpackAlignment
+			};
+
+			if (this.image !== undefined) {
+				// TODO: Move to THREE.Image
+				const image = this.image;
+
+				if (image.uuid === undefined) {
+					image.uuid = generateUUID(); // UGH
+				}
+
+				if (!isRootObject && meta.images[image.uuid] === undefined) {
+					let url;
+
+					if (Array.isArray(image)) {
+						// process array of images e.g. CubeTexture
+						url = [];
+
+						for (let i = 0, l = image.length; i < l; i++) {
+							// check cube texture with data textures
+							if (image[i].isDataTexture) {
+								url.push(serializeImage(image[i].image));
+							} else {
+								url.push(serializeImage(image[i]));
+							}
+						}
+					} else {
+						// process single image
+						url = serializeImage(image);
+					}
 
-			set: function ( value ) {
+					meta.images[image.uuid] = {
+						uuid: image.uuid,
+						url: url
+					};
+				}
 
-				this.y = value;
+				output.image = image.uuid;
+			}
 
+			if (!isRootObject) {
+				meta.textures[this.uuid] = output;
 			}
 
+			return output;
 		}
 
-	} );
+		dispose() {
+			this.dispatchEvent({
+				type: 'dispose'
+			});
+		}
 
-	Object.assign( Vector2.prototype, {
+		transformUv(uv) {
+			if (this.mapping !== UVMapping) return uv;
+			uv.applyMatrix3(this.matrix);
 
-		isVector2: true,
+			if (uv.x < 0 || uv.x > 1) {
+				switch (this.wrapS) {
+					case RepeatWrapping:
+						uv.x = uv.x - Math.floor(uv.x);
+						break;
 
-		set: function ( x, y ) {
+					case ClampToEdgeWrapping:
+						uv.x = uv.x < 0 ? 0 : 1;
+						break;
 
-			this.x = x;
-			this.y = y;
+					case MirroredRepeatWrapping:
+						if (Math.abs(Math.floor(uv.x) % 2) === 1) {
+							uv.x = Math.ceil(uv.x) - uv.x;
+						} else {
+							uv.x = uv.x - Math.floor(uv.x);
+						}
 
-			return this;
+						break;
+				}
+			}
 
-		},
+			if (uv.y < 0 || uv.y > 1) {
+				switch (this.wrapT) {
+					case RepeatWrapping:
+						uv.y = uv.y - Math.floor(uv.y);
+						break;
 
-		setScalar: function ( scalar ) {
+					case ClampToEdgeWrapping:
+						uv.y = uv.y < 0 ? 0 : 1;
+						break;
 
-			this.x = scalar;
-			this.y = scalar;
+					case MirroredRepeatWrapping:
+						if (Math.abs(Math.floor(uv.y) % 2) === 1) {
+							uv.y = Math.ceil(uv.y) - uv.y;
+						} else {
+							uv.y = uv.y - Math.floor(uv.y);
+						}
 
-			return this;
+						break;
+				}
+			}
 
-		},
+			if (this.flipY) {
+				uv.y = 1 - uv.y;
+			}
 
-		setX: function ( x ) {
+			return uv;
+		}
 
-			this.x = x;
+		set needsUpdate(value) {
+			if (value === true) this.version++;
+		}
 
-			return this;
+	}
 
-		},
+	Texture.DEFAULT_IMAGE = undefined;
+	Texture.DEFAULT_MAPPING = UVMapping;
+	Texture.prototype.isTexture = true;
 
-		setY: function ( y ) {
+	function serializeImage(image) {
+		if (typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement || typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement || typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap) {
+			// default images
+			return ImageUtils.getDataURL(image);
+		} else {
+			if (image.data) {
+				// images of DataTexture
+				return {
+					data: Array.prototype.slice.call(image.data),
+					width: image.width,
+					height: image.height,
+					type: image.data.constructor.name
+				};
+			} else {
+				console.warn('THREE.Texture: Unable to serialize Texture.');
+				return {};
+			}
+		}
+	}
 
+	class Vector4 {
+		constructor(x = 0, y = 0, z = 0, w = 1) {
+			this.x = x;
 			this.y = y;
+			this.z = z;
+			this.w = w;
+		}
 
-			return this;
+		get width() {
+			return this.z;
+		}
 
-		},
+		set width(value) {
+			this.z = value;
+		}
 
-		setComponent: function ( index, value ) {
+		get height() {
+			return this.w;
+		}
 
-			switch ( index ) {
+		set height(value) {
+			this.w = value;
+		}
 
-				case 0: this.x = value; break;
-				case 1: this.y = value; break;
-				default: throw new Error( 'index is out of range: ' + index );
+		set(x, y, z, w) {
+			this.x = x;
+			this.y = y;
+			this.z = z;
+			this.w = w;
+			return this;
+		}
 
-			}
+		setScalar(scalar) {
+			this.x = scalar;
+			this.y = scalar;
+			this.z = scalar;
+			this.w = scalar;
+			return this;
+		}
 
+		setX(x) {
+			this.x = x;
 			return this;
+		}
 
-		},
+		setY(y) {
+			this.y = y;
+			return this;
+		}
 
-		getComponent: function ( index ) {
+		setZ(z) {
+			this.z = z;
+			return this;
+		}
 
-			switch ( index ) {
+		setW(w) {
+			this.w = w;
+			return this;
+		}
 
-				case 0: return this.x;
-				case 1: return this.y;
-				default: throw new Error( 'index is out of range: ' + index );
+		setComponent(index, value) {
+			switch (index) {
+				case 0:
+					this.x = value;
+					break;
 
-			}
+				case 1:
+					this.y = value;
+					break;
 
-		},
+				case 2:
+					this.z = value;
+					break;
 
-		clone: function () {
+				case 3:
+					this.w = value;
+					break;
 
-			return new this.constructor( this.x, this.y );
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
 
-		},
+			return this;
+		}
 
-		copy: function ( v ) {
+		getComponent(index) {
+			switch (index) {
+				case 0:
+					return this.x;
 
-			this.x = v.x;
-			this.y = v.y;
+				case 1:
+					return this.y;
 
-			return this;
+				case 2:
+					return this.z;
 
-		},
+				case 3:
+					return this.w;
 
-		add: function ( v, w ) {
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
+		}
 
-			if ( w !== undefined ) {
+		clone() {
+			return new this.constructor(this.x, this.y, this.z, this.w);
+		}
 
-				console.warn( 'THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
-				return this.addVectors( v, w );
+		copy(v) {
+			this.x = v.x;
+			this.y = v.y;
+			this.z = v.z;
+			this.w = v.w !== undefined ? v.w : 1;
+			return this;
+		}
 
+		add(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
+				return this.addVectors(v, w);
 			}
 
 			this.x += v.x;
 			this.y += v.y;
-
+			this.z += v.z;
+			this.w += v.w;
 			return this;
+		}
 
-		},
-
-		addScalar: function ( s ) {
-
+		addScalar(s) {
 			this.x += s;
 			this.y += s;
-
+			this.z += s;
+			this.w += s;
 			return this;
+		}
 
-		},
-
-		addVectors: function ( a, b ) {
-
+		addVectors(a, b) {
 			this.x = a.x + b.x;
 			this.y = a.y + b.y;
-
+			this.z = a.z + b.z;
+			this.w = a.w + b.w;
 			return this;
+		}
 
-		},
-
-		addScaledVector: function ( v, s ) {
-
+		addScaledVector(v, s) {
 			this.x += v.x * s;
 			this.y += v.y * s;
-
+			this.z += v.z * s;
+			this.w += v.w * s;
 			return this;
+		}
 
-		},
-
-		sub: function ( v, w ) {
-
-			if ( w !== undefined ) {
-
-				console.warn( 'THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
-				return this.subVectors( v, w );
-
+		sub(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.');
+				return this.subVectors(v, w);
 			}
 
 			this.x -= v.x;
 			this.y -= v.y;
-
+			this.z -= v.z;
+			this.w -= v.w;
 			return this;
+		}
 
-		},
-
-		subScalar: function ( s ) {
-
+		subScalar(s) {
 			this.x -= s;
 			this.y -= s;
-
+			this.z -= s;
+			this.w -= s;
 			return this;
+		}
 
-		},
-
-		subVectors: function ( a, b ) {
-
+		subVectors(a, b) {
 			this.x = a.x - b.x;
 			this.y = a.y - b.y;
-
+			this.z = a.z - b.z;
+			this.w = a.w - b.w;
 			return this;
+		}
 
-		},
-
-		multiply: function ( v ) {
-
+		multiply(v) {
 			this.x *= v.x;
 			this.y *= v.y;
-
+			this.z *= v.z;
+			this.w *= v.w;
 			return this;
+		}
 
-		},
-
-		multiplyScalar: function ( scalar ) {
-
+		multiplyScalar(scalar) {
 			this.x *= scalar;
 			this.y *= scalar;
-
+			this.z *= scalar;
+			this.w *= scalar;
 			return this;
+		}
 
-		},
-
-		divide: function ( v ) {
-
-			this.x /= v.x;
-			this.y /= v.y;
-
+		applyMatrix4(m) {
+			const x = this.x,
+						y = this.y,
+						z = this.z,
+						w = this.w;
+			const e = m.elements;
+			this.x = e[0] * x + e[4] * y + e[8] * z + e[12] * w;
+			this.y = e[1] * x + e[5] * y + e[9] * z + e[13] * w;
+			this.z = e[2] * x + e[6] * y + e[10] * z + e[14] * w;
+			this.w = e[3] * x + e[7] * y + e[11] * z + e[15] * w;
 			return this;
+		}
 
-		},
-
-		divideScalar: function ( scalar ) {
+		divideScalar(scalar) {
+			return this.multiplyScalar(1 / scalar);
+		}
 
-			return this.multiplyScalar( 1 / scalar );
+		setAxisAngleFromQuaternion(q) {
+			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm
+			// q is assumed to be normalized
+			this.w = 2 * Math.acos(q.w);
+			const s = Math.sqrt(1 - q.w * q.w);
 
-		},
+			if (s < 0.0001) {
+				this.x = 1;
+				this.y = 0;
+				this.z = 0;
+			} else {
+				this.x = q.x / s;
+				this.y = q.y / s;
+				this.z = q.z / s;
+			}
 
-		applyMatrix3: function ( m ) {
+			return this;
+		}
 
-			var x = this.x, y = this.y;
-			var e = m.elements;
+		setAxisAngleFromRotationMatrix(m) {
+			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm
+			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+			let angle, x, y, z; // variables for result
+
+			const epsilon = 0.01,
+						// margin to allow for rounding errors
+			epsilon2 = 0.1,
+						// margin to distinguish between 0 and 180 degrees
+			te = m.elements,
+						m11 = te[0],
+						m12 = te[4],
+						m13 = te[8],
+						m21 = te[1],
+						m22 = te[5],
+						m23 = te[9],
+						m31 = te[2],
+						m32 = te[6],
+						m33 = te[10];
+
+			if (Math.abs(m12 - m21) < epsilon && Math.abs(m13 - m31) < epsilon && Math.abs(m23 - m32) < epsilon) {
+				// singularity found
+				// first check for identity matrix which must have +1 for all terms
+				// in leading diagonal and zero in other terms
+				if (Math.abs(m12 + m21) < epsilon2 && Math.abs(m13 + m31) < epsilon2 && Math.abs(m23 + m32) < epsilon2 && Math.abs(m11 + m22 + m33 - 3) < epsilon2) {
+					// this singularity is identity matrix so angle = 0
+					this.set(1, 0, 0, 0);
+					return this; // zero angle, arbitrary axis
+				} // otherwise this singularity is angle = 180
 
-			this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];
-			this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];
 
-			return this;
-
-		},
-
-		min: function ( v ) {
-
-			this.x = Math.min( this.x, v.x );
-			this.y = Math.min( this.y, v.y );
+				angle = Math.PI;
+				const xx = (m11 + 1) / 2;
+				const yy = (m22 + 1) / 2;
+				const zz = (m33 + 1) / 2;
+				const xy = (m12 + m21) / 4;
+				const xz = (m13 + m31) / 4;
+				const yz = (m23 + m32) / 4;
+
+				if (xx > yy && xx > zz) {
+					// m11 is the largest diagonal term
+					if (xx < epsilon) {
+						x = 0;
+						y = 0.707106781;
+						z = 0.707106781;
+					} else {
+						x = Math.sqrt(xx);
+						y = xy / x;
+						z = xz / x;
+					}
+				} else if (yy > zz) {
+					// m22 is the largest diagonal term
+					if (yy < epsilon) {
+						x = 0.707106781;
+						y = 0;
+						z = 0.707106781;
+					} else {
+						y = Math.sqrt(yy);
+						x = xy / y;
+						z = yz / y;
+					}
+				} else {
+					// m33 is the largest diagonal term so base result on this
+					if (zz < epsilon) {
+						x = 0.707106781;
+						y = 0.707106781;
+						z = 0;
+					} else {
+						z = Math.sqrt(zz);
+						x = xz / z;
+						y = yz / z;
+					}
+				}
 
-			return this;
+				this.set(x, y, z, angle);
+				return this; // return 180 deg rotation
+			} // as we have reached here there are no singularities so we can handle normally
 
-		},
 
-		max: function ( v ) {
+			let s = Math.sqrt((m32 - m23) * (m32 - m23) + (m13 - m31) * (m13 - m31) + (m21 - m12) * (m21 - m12)); // used to normalize
 
-			this.x = Math.max( this.x, v.x );
-			this.y = Math.max( this.y, v.y );
+			if (Math.abs(s) < 0.001) s = 1; // prevent divide by zero, should not happen if matrix is orthogonal and should be
+			// caught by singularity test above, but I've left it in just in case
 
+			this.x = (m32 - m23) / s;
+			this.y = (m13 - m31) / s;
+			this.z = (m21 - m12) / s;
+			this.w = Math.acos((m11 + m22 + m33 - 1) / 2);
 			return this;
+		}
 
-		},
+		min(v) {
+			this.x = Math.min(this.x, v.x);
+			this.y = Math.min(this.y, v.y);
+			this.z = Math.min(this.z, v.z);
+			this.w = Math.min(this.w, v.w);
+			return this;
+		}
 
-		clamp: function ( min, max ) {
+		max(v) {
+			this.x = Math.max(this.x, v.x);
+			this.y = Math.max(this.y, v.y);
+			this.z = Math.max(this.z, v.z);
+			this.w = Math.max(this.w, v.w);
+			return this;
+		}
 
+		clamp(min, max) {
 			// assumes min < max, componentwise
-
-			this.x = Math.max( min.x, Math.min( max.x, this.x ) );
-			this.y = Math.max( min.y, Math.min( max.y, this.y ) );
-
+			this.x = Math.max(min.x, Math.min(max.x, this.x));
+			this.y = Math.max(min.y, Math.min(max.y, this.y));
+			this.z = Math.max(min.z, Math.min(max.z, this.z));
+			this.w = Math.max(min.w, Math.min(max.w, this.w));
 			return this;
+		}
 
-		},
-
-		clampScalar: function () {
+		clampScalar(minVal, maxVal) {
+			this.x = Math.max(minVal, Math.min(maxVal, this.x));
+			this.y = Math.max(minVal, Math.min(maxVal, this.y));
+			this.z = Math.max(minVal, Math.min(maxVal, this.z));
+			this.w = Math.max(minVal, Math.min(maxVal, this.w));
+			return this;
+		}
 
-			var min = new Vector2();
-			var max = new Vector2();
+		clampLength(min, max) {
+			const length = this.length();
+			return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
+		}
 
-			return function clampScalar( minVal, maxVal ) {
+		floor() {
+			this.x = Math.floor(this.x);
+			this.y = Math.floor(this.y);
+			this.z = Math.floor(this.z);
+			this.w = Math.floor(this.w);
+			return this;
+		}
 
-				min.set( minVal, minVal );
-				max.set( maxVal, maxVal );
+		ceil() {
+			this.x = Math.ceil(this.x);
+			this.y = Math.ceil(this.y);
+			this.z = Math.ceil(this.z);
+			this.w = Math.ceil(this.w);
+			return this;
+		}
 
-				return this.clamp( min, max );
+		round() {
+			this.x = Math.round(this.x);
+			this.y = Math.round(this.y);
+			this.z = Math.round(this.z);
+			this.w = Math.round(this.w);
+			return this;
+		}
 
-			};
+		roundToZero() {
+			this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
+			this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
+			this.z = this.z < 0 ? Math.ceil(this.z) : Math.floor(this.z);
+			this.w = this.w < 0 ? Math.ceil(this.w) : Math.floor(this.w);
+			return this;
+		}
 
-		}(),
+		negate() {
+			this.x = -this.x;
+			this.y = -this.y;
+			this.z = -this.z;
+			this.w = -this.w;
+			return this;
+		}
 
-		clampLength: function ( min, max ) {
+		dot(v) {
+			return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;
+		}
 
-			var length = this.length();
+		lengthSq() {
+			return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;
+		}
 
-			return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
+		length() {
+			return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w);
+		}
 
-		},
+		manhattanLength() {
+			return Math.abs(this.x) + Math.abs(this.y) + Math.abs(this.z) + Math.abs(this.w);
+		}
 
-		floor: function () {
+		normalize() {
+			return this.divideScalar(this.length() || 1);
+		}
 
-			this.x = Math.floor( this.x );
-			this.y = Math.floor( this.y );
+		setLength(length) {
+			return this.normalize().multiplyScalar(length);
+		}
 
+		lerp(v, alpha) {
+			this.x += (v.x - this.x) * alpha;
+			this.y += (v.y - this.y) * alpha;
+			this.z += (v.z - this.z) * alpha;
+			this.w += (v.w - this.w) * alpha;
 			return this;
+		}
 
-		},
-
-		ceil: function () {
+		lerpVectors(v1, v2, alpha) {
+			this.x = v1.x + (v2.x - v1.x) * alpha;
+			this.y = v1.y + (v2.y - v1.y) * alpha;
+			this.z = v1.z + (v2.z - v1.z) * alpha;
+			this.w = v1.w + (v2.w - v1.w) * alpha;
+			return this;
+		}
 
-			this.x = Math.ceil( this.x );
-			this.y = Math.ceil( this.y );
+		equals(v) {
+			return v.x === this.x && v.y === this.y && v.z === this.z && v.w === this.w;
+		}
 
+		fromArray(array, offset = 0) {
+			this.x = array[offset];
+			this.y = array[offset + 1];
+			this.z = array[offset + 2];
+			this.w = array[offset + 3];
 			return this;
+		}
 
-		},
+		toArray(array = [], offset = 0) {
+			array[offset] = this.x;
+			array[offset + 1] = this.y;
+			array[offset + 2] = this.z;
+			array[offset + 3] = this.w;
+			return array;
+		}
 
-		round: function () {
+		fromBufferAttribute(attribute, index, offset) {
+			if (offset !== undefined) {
+				console.warn('THREE.Vector4: offset has been removed from .fromBufferAttribute().');
+			}
 
-			this.x = Math.round( this.x );
-			this.y = Math.round( this.y );
+			this.x = attribute.getX(index);
+			this.y = attribute.getY(index);
+			this.z = attribute.getZ(index);
+			this.w = attribute.getW(index);
+			return this;
+		}
 
+		random() {
+			this.x = Math.random();
+			this.y = Math.random();
+			this.z = Math.random();
+			this.w = Math.random();
 			return this;
+		}
 
-		},
+	}
 
-		roundToZero: function () {
+	Vector4.prototype.isVector4 = true;
 
-			this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
-			this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
+	/*
+	 In options, we can specify:
+	 * Texture parameters for an auto-generated target texture
+	 * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers
+	*/
 
-			return this;
+	class WebGLRenderTarget extends EventDispatcher {
+		constructor(width, height, options = {}) {
+			super();
+			this.width = width;
+			this.height = height;
+			this.depth = 1;
+			this.scissor = new Vector4(0, 0, width, height);
+			this.scissorTest = false;
+			this.viewport = new Vector4(0, 0, width, height);
+			this.texture = new Texture(undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding);
+			this.texture.image = {
+				width: width,
+				height: height,
+				depth: 1
+			};
+			this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
+			this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;
+			this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;
+			this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : false;
+			this.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;
+		}
+
+		setTexture(texture) {
+			texture.image = {
+				width: this.width,
+				height: this.height,
+				depth: this.depth
+			};
+			this.texture = texture;
+		}
 
-		},
+		setSize(width, height, depth = 1) {
+			if (this.width !== width || this.height !== height || this.depth !== depth) {
+				this.width = width;
+				this.height = height;
+				this.depth = depth;
+				this.texture.image.width = width;
+				this.texture.image.height = height;
+				this.texture.image.depth = depth;
+				this.dispose();
+			}
 
-		negate: function () {
+			this.viewport.set(0, 0, width, height);
+			this.scissor.set(0, 0, width, height);
+		}
 
-			this.x = - this.x;
-			this.y = - this.y;
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-			return this;
+		copy(source) {
+			this.width = source.width;
+			this.height = source.height;
+			this.depth = source.depth;
+			this.viewport.copy(source.viewport);
+			this.texture = source.texture.clone();
+			this.texture.image = { ...this.texture.image
+			}; // See #20328.
 
-		},
+			this.depthBuffer = source.depthBuffer;
+			this.stencilBuffer = source.stencilBuffer;
+			this.depthTexture = source.depthTexture;
+			return this;
+		}
 
-		dot: function ( v ) {
+		dispose() {
+			this.dispatchEvent({
+				type: 'dispose'
+			});
+		}
 
-			return this.x * v.x + this.y * v.y;
+	}
 
-		},
+	WebGLRenderTarget.prototype.isWebGLRenderTarget = true;
 
-		lengthSq: function () {
+	class WebGLMultipleRenderTargets extends WebGLRenderTarget {
+		constructor(width, height, count) {
+			super(width, height);
+			const texture = this.texture;
+			this.texture = [];
 
-			return this.x * this.x + this.y * this.y;
+			for (let i = 0; i < count; i++) {
+				this.texture[i] = texture.clone();
+			}
+		}
 
-		},
+		setSize(width, height, depth = 1) {
+			if (this.width !== width || this.height !== height || this.depth !== depth) {
+				this.width = width;
+				this.height = height;
+				this.depth = depth;
 
-		length: function () {
+				for (let i = 0, il = this.texture.length; i < il; i++) {
+					this.texture[i].image.width = width;
+					this.texture[i].image.height = height;
+					this.texture[i].image.depth = depth;
+				}
 
-			return Math.sqrt( this.x * this.x + this.y * this.y );
+				this.dispose();
+			}
 
-		},
+			this.viewport.set(0, 0, width, height);
+			this.scissor.set(0, 0, width, height);
+			return this;
+		}
 
-		manhattanLength: function () {
+		copy(source) {
+			this.dispose();
+			this.width = source.width;
+			this.height = source.height;
+			this.depth = source.depth;
+			this.viewport.set(0, 0, this.width, this.height);
+			this.scissor.set(0, 0, this.width, this.height);
+			this.depthBuffer = source.depthBuffer;
+			this.stencilBuffer = source.stencilBuffer;
+			this.depthTexture = source.depthTexture;
+			this.texture.length = 0;
 
-			return Math.abs( this.x ) + Math.abs( this.y );
+			for (let i = 0, il = source.texture.length; i < il; i++) {
+				this.texture[i] = source.texture[i].clone();
+			}
 
-		},
+			return this;
+		}
 
-		normalize: function () {
+	}
 
-			return this.divideScalar( this.length() || 1 );
+	WebGLMultipleRenderTargets.prototype.isWebGLMultipleRenderTargets = true;
 
-		},
+	class WebGLMultisampleRenderTarget extends WebGLRenderTarget {
+		constructor(width, height, options) {
+			super(width, height, options);
+			this.samples = 4;
+		}
 
-		angle: function () {
+		copy(source) {
+			super.copy.call(this, source);
+			this.samples = source.samples;
+			return this;
+		}
 
-			// computes the angle in radians with respect to the positive x-axis
+	}
 
-			var angle = Math.atan2( this.y, this.x );
+	WebGLMultisampleRenderTarget.prototype.isWebGLMultisampleRenderTarget = true;
 
-			if ( angle < 0 ) angle += 2 * Math.PI;
+	class Quaternion {
+		constructor(x = 0, y = 0, z = 0, w = 1) {
+			this._x = x;
+			this._y = y;
+			this._z = z;
+			this._w = w;
+		}
 
-			return angle;
+		static slerp(qa, qb, qm, t) {
+			console.warn('THREE.Quaternion: Static .slerp() has been deprecated. Use qm.slerpQuaternions( qa, qb, t ) instead.');
+			return qm.slerpQuaternions(qa, qb, t);
+		}
 
-		},
+		static slerpFlat(dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t) {
+			// fuzz-free, array-based Quaternion SLERP operation
+			let x0 = src0[srcOffset0 + 0],
+					y0 = src0[srcOffset0 + 1],
+					z0 = src0[srcOffset0 + 2],
+					w0 = src0[srcOffset0 + 3];
+			const x1 = src1[srcOffset1 + 0],
+						y1 = src1[srcOffset1 + 1],
+						z1 = src1[srcOffset1 + 2],
+						w1 = src1[srcOffset1 + 3];
+
+			if (t === 0) {
+				dst[dstOffset + 0] = x0;
+				dst[dstOffset + 1] = y0;
+				dst[dstOffset + 2] = z0;
+				dst[dstOffset + 3] = w0;
+				return;
+			}
 
-		distanceTo: function ( v ) {
+			if (t === 1) {
+				dst[dstOffset + 0] = x1;
+				dst[dstOffset + 1] = y1;
+				dst[dstOffset + 2] = z1;
+				dst[dstOffset + 3] = w1;
+				return;
+			}
 
-			return Math.sqrt( this.distanceToSquared( v ) );
+			if (w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1) {
+				let s = 1 - t;
+				const cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
+							dir = cos >= 0 ? 1 : -1,
+							sqrSin = 1 - cos * cos; // Skip the Slerp for tiny steps to avoid numeric problems:
 
-		},
+				if (sqrSin > Number.EPSILON) {
+					const sin = Math.sqrt(sqrSin),
+								len = Math.atan2(sin, cos * dir);
+					s = Math.sin(s * len) / sin;
+					t = Math.sin(t * len) / sin;
+				}
 
-		distanceToSquared: function ( v ) {
+				const tDir = t * dir;
+				x0 = x0 * s + x1 * tDir;
+				y0 = y0 * s + y1 * tDir;
+				z0 = z0 * s + z1 * tDir;
+				w0 = w0 * s + w1 * tDir; // Normalize in case we just did a lerp:
 
-			var dx = this.x - v.x, dy = this.y - v.y;
-			return dx * dx + dy * dy;
+				if (s === 1 - t) {
+					const f = 1 / Math.sqrt(x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0);
+					x0 *= f;
+					y0 *= f;
+					z0 *= f;
+					w0 *= f;
+				}
+			}
 
-		},
+			dst[dstOffset] = x0;
+			dst[dstOffset + 1] = y0;
+			dst[dstOffset + 2] = z0;
+			dst[dstOffset + 3] = w0;
+		}
 
-		manhattanDistanceTo: function ( v ) {
+		static multiplyQuaternionsFlat(dst, dstOffset, src0, srcOffset0, src1, srcOffset1) {
+			const x0 = src0[srcOffset0];
+			const y0 = src0[srcOffset0 + 1];
+			const z0 = src0[srcOffset0 + 2];
+			const w0 = src0[srcOffset0 + 3];
+			const x1 = src1[srcOffset1];
+			const y1 = src1[srcOffset1 + 1];
+			const z1 = src1[srcOffset1 + 2];
+			const w1 = src1[srcOffset1 + 3];
+			dst[dstOffset] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
+			dst[dstOffset + 1] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
+			dst[dstOffset + 2] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
+			dst[dstOffset + 3] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;
+			return dst;
+		}
 
-			return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );
+		get x() {
+			return this._x;
+		}
 
-		},
+		set x(value) {
+			this._x = value;
 
-		setLength: function ( length ) {
+			this._onChangeCallback();
+		}
 
-			return this.normalize().multiplyScalar( length );
+		get y() {
+			return this._y;
+		}
 
-		},
+		set y(value) {
+			this._y = value;
 
-		lerp: function ( v, alpha ) {
+			this._onChangeCallback();
+		}
 
-			this.x += ( v.x - this.x ) * alpha;
-			this.y += ( v.y - this.y ) * alpha;
+		get z() {
+			return this._z;
+		}
 
-			return this;
+		set z(value) {
+			this._z = value;
 
-		},
+			this._onChangeCallback();
+		}
 
-		lerpVectors: function ( v1, v2, alpha ) {
+		get w() {
+			return this._w;
+		}
 
-			return this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 );
+		set w(value) {
+			this._w = value;
 
-		},
+			this._onChangeCallback();
+		}
 
-		equals: function ( v ) {
+		set(x, y, z, w) {
+			this._x = x;
+			this._y = y;
+			this._z = z;
+			this._w = w;
 
-			return ( ( v.x === this.x ) && ( v.y === this.y ) );
+			this._onChangeCallback();
 
-		},
+			return this;
+		}
 
-		fromArray: function ( array, offset ) {
+		clone() {
+			return new this.constructor(this._x, this._y, this._z, this._w);
+		}
 
-			if ( offset === undefined ) offset = 0;
+		copy(quaternion) {
+			this._x = quaternion.x;
+			this._y = quaternion.y;
+			this._z = quaternion.z;
+			this._w = quaternion.w;
 
-			this.x = array[ offset ];
-			this.y = array[ offset + 1 ];
+			this._onChangeCallback();
 
 			return this;
+		}
 
-		},
-
-		toArray: function ( array, offset ) {
+		setFromEuler(euler, update) {
+			if (!(euler && euler.isEuler)) {
+				throw new Error('THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.');
+			}
 
-			if ( array === undefined ) array = [];
-			if ( offset === undefined ) offset = 0;
+			const x = euler._x,
+						y = euler._y,
+						z = euler._z,
+						order = euler._order; // http://www.mathworks.com/matlabcentral/fileexchange/
+			// 	20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/
+			//	content/SpinCalc.m
 
-			array[ offset ] = this.x;
-			array[ offset + 1 ] = this.y;
+			const cos = Math.cos;
+			const sin = Math.sin;
+			const c1 = cos(x / 2);
+			const c2 = cos(y / 2);
+			const c3 = cos(z / 2);
+			const s1 = sin(x / 2);
+			const s2 = sin(y / 2);
+			const s3 = sin(z / 2);
+
+			switch (order) {
+				case 'XYZ':
+					this._x = s1 * c2 * c3 + c1 * s2 * s3;
+					this._y = c1 * s2 * c3 - s1 * c2 * s3;
+					this._z = c1 * c2 * s3 + s1 * s2 * c3;
+					this._w = c1 * c2 * c3 - s1 * s2 * s3;
+					break;
 
-			return array;
+				case 'YXZ':
+					this._x = s1 * c2 * c3 + c1 * s2 * s3;
+					this._y = c1 * s2 * c3 - s1 * c2 * s3;
+					this._z = c1 * c2 * s3 - s1 * s2 * c3;
+					this._w = c1 * c2 * c3 + s1 * s2 * s3;
+					break;
 
-		},
+				case 'ZXY':
+					this._x = s1 * c2 * c3 - c1 * s2 * s3;
+					this._y = c1 * s2 * c3 + s1 * c2 * s3;
+					this._z = c1 * c2 * s3 + s1 * s2 * c3;
+					this._w = c1 * c2 * c3 - s1 * s2 * s3;
+					break;
 
-		fromBufferAttribute: function ( attribute, index, offset ) {
+				case 'ZYX':
+					this._x = s1 * c2 * c3 - c1 * s2 * s3;
+					this._y = c1 * s2 * c3 + s1 * c2 * s3;
+					this._z = c1 * c2 * s3 - s1 * s2 * c3;
+					this._w = c1 * c2 * c3 + s1 * s2 * s3;
+					break;
 
-			if ( offset !== undefined ) {
+				case 'YZX':
+					this._x = s1 * c2 * c3 + c1 * s2 * s3;
+					this._y = c1 * s2 * c3 + s1 * c2 * s3;
+					this._z = c1 * c2 * s3 - s1 * s2 * c3;
+					this._w = c1 * c2 * c3 - s1 * s2 * s3;
+					break;
 
-				console.warn( 'THREE.Vector2: offset has been removed from .fromBufferAttribute().' );
+				case 'XZY':
+					this._x = s1 * c2 * c3 - c1 * s2 * s3;
+					this._y = c1 * s2 * c3 - s1 * c2 * s3;
+					this._z = c1 * c2 * s3 + s1 * s2 * c3;
+					this._w = c1 * c2 * c3 + s1 * s2 * s3;
+					break;
 
+				default:
+					console.warn('THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order);
 			}
 
-			this.x = attribute.getX( index );
-			this.y = attribute.getY( index );
-
+			if (update !== false) this._onChangeCallback();
 			return this;
+		}
 
-		},
+		setFromAxisAngle(axis, angle) {
+			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm
+			// assumes axis is normalized
+			const halfAngle = angle / 2,
+						s = Math.sin(halfAngle);
+			this._x = axis.x * s;
+			this._y = axis.y * s;
+			this._z = axis.z * s;
+			this._w = Math.cos(halfAngle);
 
-		rotateAround: function ( center, angle ) {
+			this._onChangeCallback();
 
-			var c = Math.cos( angle ), s = Math.sin( angle );
+			return this;
+		}
 
-			var x = this.x - center.x;
-			var y = this.y - center.y;
+		setFromRotationMatrix(m) {
+			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
+			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+			const te = m.elements,
+						m11 = te[0],
+						m12 = te[4],
+						m13 = te[8],
+						m21 = te[1],
+						m22 = te[5],
+						m23 = te[9],
+						m31 = te[2],
+						m32 = te[6],
+						m33 = te[10],
+						trace = m11 + m22 + m33;
+
+			if (trace > 0) {
+				const s = 0.5 / Math.sqrt(trace + 1.0);
+				this._w = 0.25 / s;
+				this._x = (m32 - m23) * s;
+				this._y = (m13 - m31) * s;
+				this._z = (m21 - m12) * s;
+			} else if (m11 > m22 && m11 > m33) {
+				const s = 2.0 * Math.sqrt(1.0 + m11 - m22 - m33);
+				this._w = (m32 - m23) / s;
+				this._x = 0.25 * s;
+				this._y = (m12 + m21) / s;
+				this._z = (m13 + m31) / s;
+			} else if (m22 > m33) {
+				const s = 2.0 * Math.sqrt(1.0 + m22 - m11 - m33);
+				this._w = (m13 - m31) / s;
+				this._x = (m12 + m21) / s;
+				this._y = 0.25 * s;
+				this._z = (m23 + m32) / s;
+			} else {
+				const s = 2.0 * Math.sqrt(1.0 + m33 - m11 - m22);
+				this._w = (m21 - m12) / s;
+				this._x = (m13 + m31) / s;
+				this._y = (m23 + m32) / s;
+				this._z = 0.25 * s;
+			}
 
-			this.x = x * c - y * s + center.x;
-			this.y = x * s + y * c + center.y;
+			this._onChangeCallback();
 
 			return this;
-
 		}
 
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author supereggbert / http://www.paulbrunt.co.uk/
-	 * @author philogb / http://blog.thejit.org/
-	 * @author jordi_ros / http://plattsoft.com
-	 * @author D1plo1d / http://github.com/D1plo1d
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author timknip / http://www.floorplanner.com/
-	 * @author bhouston / http://clara.io
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
+		setFromUnitVectors(vFrom, vTo) {
+			// assumes direction vectors vFrom and vTo are normalized
+			let r = vFrom.dot(vTo) + 1;
 
-	function Matrix4() {
+			if (r < Number.EPSILON) {
+				// vFrom and vTo point in opposite directions
+				r = 0;
 
-		this.elements = [
+				if (Math.abs(vFrom.x) > Math.abs(vFrom.z)) {
+					this._x = -vFrom.y;
+					this._y = vFrom.x;
+					this._z = 0;
+					this._w = r;
+				} else {
+					this._x = 0;
+					this._y = -vFrom.z;
+					this._z = vFrom.y;
+					this._w = r;
+				}
+			} else {
+				// crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3
+				this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
+				this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
+				this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
+				this._w = r;
+			}
 
-			1, 0, 0, 0,
-			0, 1, 0, 0,
-			0, 0, 1, 0,
-			0, 0, 0, 1
+			return this.normalize();
+		}
 
-		];
+		angleTo(q) {
+			return 2 * Math.acos(Math.abs(clamp(this.dot(q), -1, 1)));
+		}
 
-		if ( arguments.length > 0 ) {
+		rotateTowards(q, step) {
+			const angle = this.angleTo(q);
+			if (angle === 0) return this;
+			const t = Math.min(1, step / angle);
+			this.slerp(q, t);
+			return this;
+		}
 
-			console.error( 'THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.' );
+		identity() {
+			return this.set(0, 0, 0, 1);
+		}
 
+		invert() {
+			// quaternion is assumed to have unit length
+			return this.conjugate();
 		}
 
-	}
+		conjugate() {
+			this._x *= -1;
+			this._y *= -1;
+			this._z *= -1;
 
-	Object.assign( Matrix4.prototype, {
+			this._onChangeCallback();
 
-		isMatrix4: true,
+			return this;
+		}
 
-		set: function ( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {
+		dot(v) {
+			return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;
+		}
 
-			var te = this.elements;
+		lengthSq() {
+			return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;
+		}
 
-			te[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;
-			te[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;
-			te[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;
-			te[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;
+		length() {
+			return Math.sqrt(this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w);
+		}
 
-			return this;
+		normalize() {
+			let l = this.length();
 
-		},
+			if (l === 0) {
+				this._x = 0;
+				this._y = 0;
+				this._z = 0;
+				this._w = 1;
+			} else {
+				l = 1 / l;
+				this._x = this._x * l;
+				this._y = this._y * l;
+				this._z = this._z * l;
+				this._w = this._w * l;
+			}
 
-		identity: function () {
+			this._onChangeCallback();
 
-			this.set(
+			return this;
+		}
 
-				1, 0, 0, 0,
-				0, 1, 0, 0,
-				0, 0, 1, 0,
-				0, 0, 0, 1
+		multiply(q, p) {
+			if (p !== undefined) {
+				console.warn('THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.');
+				return this.multiplyQuaternions(q, p);
+			}
 
-			);
+			return this.multiplyQuaternions(this, q);
+		}
 
-			return this;
+		premultiply(q) {
+			return this.multiplyQuaternions(q, this);
+		}
 
-		},
+		multiplyQuaternions(a, b) {
+			// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm
+			const qax = a._x,
+						qay = a._y,
+						qaz = a._z,
+						qaw = a._w;
+			const qbx = b._x,
+						qby = b._y,
+						qbz = b._z,
+						qbw = b._w;
+			this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
+			this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
+			this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
+			this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;
 
-		clone: function () {
+			this._onChangeCallback();
 
-			return new Matrix4().fromArray( this.elements );
+			return this;
+		}
 
-		},
+		slerp(qb, t) {
+			if (t === 0) return this;
+			if (t === 1) return this.copy(qb);
+			const x = this._x,
+						y = this._y,
+						z = this._z,
+						w = this._w; // http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/
+
+			let cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;
 
-		copy: function ( m ) {
+			if (cosHalfTheta < 0) {
+				this._w = -qb._w;
+				this._x = -qb._x;
+				this._y = -qb._y;
+				this._z = -qb._z;
+				cosHalfTheta = -cosHalfTheta;
+			} else {
+				this.copy(qb);
+			}
 
-			var te = this.elements;
-			var me = m.elements;
+			if (cosHalfTheta >= 1.0) {
+				this._w = w;
+				this._x = x;
+				this._y = y;
+				this._z = z;
+				return this;
+			}
 
-			te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];
-			te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];
-			te[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];
-			te[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];
+			const sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;
 
-			return this;
+			if (sqrSinHalfTheta <= Number.EPSILON) {
+				const s = 1 - t;
+				this._w = s * w + t * this._w;
+				this._x = s * x + t * this._x;
+				this._y = s * y + t * this._y;
+				this._z = s * z + t * this._z;
+				this.normalize();
 
-		},
+				this._onChangeCallback();
 
-		copyPosition: function ( m ) {
+				return this;
+			}
 
-			var te = this.elements, me = m.elements;
+			const sinHalfTheta = Math.sqrt(sqrSinHalfTheta);
+			const halfTheta = Math.atan2(sinHalfTheta, cosHalfTheta);
+			const ratioA = Math.sin((1 - t) * halfTheta) / sinHalfTheta,
+						ratioB = Math.sin(t * halfTheta) / sinHalfTheta;
+			this._w = w * ratioA + this._w * ratioB;
+			this._x = x * ratioA + this._x * ratioB;
+			this._y = y * ratioA + this._y * ratioB;
+			this._z = z * ratioA + this._z * ratioB;
 
-			te[ 12 ] = me[ 12 ];
-			te[ 13 ] = me[ 13 ];
-			te[ 14 ] = me[ 14 ];
+			this._onChangeCallback();
 
 			return this;
+		}
 
-		},
+		slerpQuaternions(qa, qb, t) {
+			this.copy(qa).slerp(qb, t);
+		}
+
+		equals(quaternion) {
+			return quaternion._x === this._x && quaternion._y === this._y && quaternion._z === this._z && quaternion._w === this._w;
+		}
 
-		extractBasis: function ( xAxis, yAxis, zAxis ) {
+		fromArray(array, offset = 0) {
+			this._x = array[offset];
+			this._y = array[offset + 1];
+			this._z = array[offset + 2];
+			this._w = array[offset + 3];
 
-			xAxis.setFromMatrixColumn( this, 0 );
-			yAxis.setFromMatrixColumn( this, 1 );
-			zAxis.setFromMatrixColumn( this, 2 );
+			this._onChangeCallback();
 
 			return this;
+		}
 
-		},
-
-		makeBasis: function ( xAxis, yAxis, zAxis ) {
+		toArray(array = [], offset = 0) {
+			array[offset] = this._x;
+			array[offset + 1] = this._y;
+			array[offset + 2] = this._z;
+			array[offset + 3] = this._w;
+			return array;
+		}
 
-			this.set(
-				xAxis.x, yAxis.x, zAxis.x, 0,
-				xAxis.y, yAxis.y, zAxis.y, 0,
-				xAxis.z, yAxis.z, zAxis.z, 0,
-				0, 0, 0, 1
-			);
+		fromBufferAttribute(attribute, index) {
+			this._x = attribute.getX(index);
+			this._y = attribute.getY(index);
+			this._z = attribute.getZ(index);
+			this._w = attribute.getW(index);
+			return this;
+		}
 
+		_onChange(callback) {
+			this._onChangeCallback = callback;
 			return this;
+		}
 
-		},
+		_onChangeCallback() {}
 
-		extractRotation: function () {
+	}
 
-			var v1 = new Vector3();
+	Quaternion.prototype.isQuaternion = true;
 
-			return function extractRotation( m ) {
+	class Vector3 {
+		constructor(x = 0, y = 0, z = 0) {
+			this.x = x;
+			this.y = y;
+			this.z = z;
+		}
 
-				var te = this.elements;
-				var me = m.elements;
+		set(x, y, z) {
+			if (z === undefined) z = this.z; // sprite.scale.set(x,y)
 
-				var scaleX = 1 / v1.setFromMatrixColumn( m, 0 ).length();
-				var scaleY = 1 / v1.setFromMatrixColumn( m, 1 ).length();
-				var scaleZ = 1 / v1.setFromMatrixColumn( m, 2 ).length();
+			this.x = x;
+			this.y = y;
+			this.z = z;
+			return this;
+		}
 
-				te[ 0 ] = me[ 0 ] * scaleX;
-				te[ 1 ] = me[ 1 ] * scaleX;
-				te[ 2 ] = me[ 2 ] * scaleX;
+		setScalar(scalar) {
+			this.x = scalar;
+			this.y = scalar;
+			this.z = scalar;
+			return this;
+		}
 
-				te[ 4 ] = me[ 4 ] * scaleY;
-				te[ 5 ] = me[ 5 ] * scaleY;
-				te[ 6 ] = me[ 6 ] * scaleY;
+		setX(x) {
+			this.x = x;
+			return this;
+		}
 
-				te[ 8 ] = me[ 8 ] * scaleZ;
-				te[ 9 ] = me[ 9 ] * scaleZ;
-				te[ 10 ] = me[ 10 ] * scaleZ;
+		setY(y) {
+			this.y = y;
+			return this;
+		}
 
-				return this;
+		setZ(z) {
+			this.z = z;
+			return this;
+		}
 
-			};
+		setComponent(index, value) {
+			switch (index) {
+				case 0:
+					this.x = value;
+					break;
 
-		}(),
+				case 1:
+					this.y = value;
+					break;
 
-		makeRotationFromEuler: function ( euler ) {
+				case 2:
+					this.z = value;
+					break;
 
-			if ( ! ( euler && euler.isEuler ) ) {
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
 
-				console.error( 'THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.' );
+			return this;
+		}
 
-			}
+		getComponent(index) {
+			switch (index) {
+				case 0:
+					return this.x;
 
-			var te = this.elements;
+				case 1:
+					return this.y;
 
-			var x = euler.x, y = euler.y, z = euler.z;
-			var a = Math.cos( x ), b = Math.sin( x );
-			var c = Math.cos( y ), d = Math.sin( y );
-			var e = Math.cos( z ), f = Math.sin( z );
+				case 2:
+					return this.z;
 
-			if ( euler.order === 'XYZ' ) {
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
+		}
 
-				var ae = a * e, af = a * f, be = b * e, bf = b * f;
+		clone() {
+			return new this.constructor(this.x, this.y, this.z);
+		}
 
-				te[ 0 ] = c * e;
-				te[ 4 ] = - c * f;
-				te[ 8 ] = d;
+		copy(v) {
+			this.x = v.x;
+			this.y = v.y;
+			this.z = v.z;
+			return this;
+		}
 
-				te[ 1 ] = af + be * d;
-				te[ 5 ] = ae - bf * d;
-				te[ 9 ] = - b * c;
+		add(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
+				return this.addVectors(v, w);
+			}
 
-				te[ 2 ] = bf - ae * d;
-				te[ 6 ] = be + af * d;
-				te[ 10 ] = a * c;
+			this.x += v.x;
+			this.y += v.y;
+			this.z += v.z;
+			return this;
+		}
 
-			} else if ( euler.order === 'YXZ' ) {
+		addScalar(s) {
+			this.x += s;
+			this.y += s;
+			this.z += s;
+			return this;
+		}
 
-				var ce = c * e, cf = c * f, de = d * e, df = d * f;
+		addVectors(a, b) {
+			this.x = a.x + b.x;
+			this.y = a.y + b.y;
+			this.z = a.z + b.z;
+			return this;
+		}
 
-				te[ 0 ] = ce + df * b;
-				te[ 4 ] = de * b - cf;
-				te[ 8 ] = a * d;
+		addScaledVector(v, s) {
+			this.x += v.x * s;
+			this.y += v.y * s;
+			this.z += v.z * s;
+			return this;
+		}
 
-				te[ 1 ] = a * f;
-				te[ 5 ] = a * e;
-				te[ 9 ] = - b;
+		sub(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.');
+				return this.subVectors(v, w);
+			}
 
-				te[ 2 ] = cf * b - de;
-				te[ 6 ] = df + ce * b;
-				te[ 10 ] = a * c;
+			this.x -= v.x;
+			this.y -= v.y;
+			this.z -= v.z;
+			return this;
+		}
 
-			} else if ( euler.order === 'ZXY' ) {
+		subScalar(s) {
+			this.x -= s;
+			this.y -= s;
+			this.z -= s;
+			return this;
+		}
 
-				var ce = c * e, cf = c * f, de = d * e, df = d * f;
+		subVectors(a, b) {
+			this.x = a.x - b.x;
+			this.y = a.y - b.y;
+			this.z = a.z - b.z;
+			return this;
+		}
 
-				te[ 0 ] = ce - df * b;
-				te[ 4 ] = - a * f;
-				te[ 8 ] = de + cf * b;
+		multiply(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.');
+				return this.multiplyVectors(v, w);
+			}
 
-				te[ 1 ] = cf + de * b;
-				te[ 5 ] = a * e;
-				te[ 9 ] = df - ce * b;
+			this.x *= v.x;
+			this.y *= v.y;
+			this.z *= v.z;
+			return this;
+		}
 
-				te[ 2 ] = - a * d;
-				te[ 6 ] = b;
-				te[ 10 ] = a * c;
+		multiplyScalar(scalar) {
+			this.x *= scalar;
+			this.y *= scalar;
+			this.z *= scalar;
+			return this;
+		}
 
-			} else if ( euler.order === 'ZYX' ) {
+		multiplyVectors(a, b) {
+			this.x = a.x * b.x;
+			this.y = a.y * b.y;
+			this.z = a.z * b.z;
+			return this;
+		}
 
-				var ae = a * e, af = a * f, be = b * e, bf = b * f;
+		applyEuler(euler) {
+			if (!(euler && euler.isEuler)) {
+				console.error('THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.');
+			}
 
-				te[ 0 ] = c * e;
-				te[ 4 ] = be * d - af;
-				te[ 8 ] = ae * d + bf;
+			return this.applyQuaternion(_quaternion$4.setFromEuler(euler));
+		}
 
-				te[ 1 ] = c * f;
-				te[ 5 ] = bf * d + ae;
-				te[ 9 ] = af * d - be;
+		applyAxisAngle(axis, angle) {
+			return this.applyQuaternion(_quaternion$4.setFromAxisAngle(axis, angle));
+		}
 
-				te[ 2 ] = - d;
-				te[ 6 ] = b * c;
-				te[ 10 ] = a * c;
+		applyMatrix3(m) {
+			const x = this.x,
+						y = this.y,
+						z = this.z;
+			const e = m.elements;
+			this.x = e[0] * x + e[3] * y + e[6] * z;
+			this.y = e[1] * x + e[4] * y + e[7] * z;
+			this.z = e[2] * x + e[5] * y + e[8] * z;
+			return this;
+		}
 
-			} else if ( euler.order === 'YZX' ) {
+		applyNormalMatrix(m) {
+			return this.applyMatrix3(m).normalize();
+		}
 
-				var ac = a * c, ad = a * d, bc = b * c, bd = b * d;
+		applyMatrix4(m) {
+			const x = this.x,
+						y = this.y,
+						z = this.z;
+			const e = m.elements;
+			const w = 1 / (e[3] * x + e[7] * y + e[11] * z + e[15]);
+			this.x = (e[0] * x + e[4] * y + e[8] * z + e[12]) * w;
+			this.y = (e[1] * x + e[5] * y + e[9] * z + e[13]) * w;
+			this.z = (e[2] * x + e[6] * y + e[10] * z + e[14]) * w;
+			return this;
+		}
 
-				te[ 0 ] = c * e;
-				te[ 4 ] = bd - ac * f;
-				te[ 8 ] = bc * f + ad;
+		applyQuaternion(q) {
+			const x = this.x,
+						y = this.y,
+						z = this.z;
+			const qx = q.x,
+						qy = q.y,
+						qz = q.z,
+						qw = q.w; // calculate quat * vector
 
-				te[ 1 ] = f;
-				te[ 5 ] = a * e;
-				te[ 9 ] = - b * e;
+			const ix = qw * x + qy * z - qz * y;
+			const iy = qw * y + qz * x - qx * z;
+			const iz = qw * z + qx * y - qy * x;
+			const iw = -qx * x - qy * y - qz * z; // calculate result * inverse quat
 
-				te[ 2 ] = - d * e;
-				te[ 6 ] = ad * f + bc;
-				te[ 10 ] = ac - bd * f;
+			this.x = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+			this.y = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+			this.z = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+			return this;
+		}
 
-			} else if ( euler.order === 'XZY' ) {
+		project(camera) {
+			return this.applyMatrix4(camera.matrixWorldInverse).applyMatrix4(camera.projectionMatrix);
+		}
 
-				var ac = a * c, ad = a * d, bc = b * c, bd = b * d;
+		unproject(camera) {
+			return this.applyMatrix4(camera.projectionMatrixInverse).applyMatrix4(camera.matrixWorld);
+		}
 
-				te[ 0 ] = c * e;
-				te[ 4 ] = - f;
-				te[ 8 ] = d * e;
+		transformDirection(m) {
+			// input: THREE.Matrix4 affine matrix
+			// vector interpreted as a direction
+			const x = this.x,
+						y = this.y,
+						z = this.z;
+			const e = m.elements;
+			this.x = e[0] * x + e[4] * y + e[8] * z;
+			this.y = e[1] * x + e[5] * y + e[9] * z;
+			this.z = e[2] * x + e[6] * y + e[10] * z;
+			return this.normalize();
+		}
 
-				te[ 1 ] = ac * f + bd;
-				te[ 5 ] = a * e;
-				te[ 9 ] = ad * f - bc;
+		divide(v) {
+			this.x /= v.x;
+			this.y /= v.y;
+			this.z /= v.z;
+			return this;
+		}
 
-				te[ 2 ] = bc * f - ad;
-				te[ 6 ] = b * e;
-				te[ 10 ] = bd * f + ac;
+		divideScalar(scalar) {
+			return this.multiplyScalar(1 / scalar);
+		}
 
-			}
+		min(v) {
+			this.x = Math.min(this.x, v.x);
+			this.y = Math.min(this.y, v.y);
+			this.z = Math.min(this.z, v.z);
+			return this;
+		}
 
-			// last column
-			te[ 3 ] = 0;
-			te[ 7 ] = 0;
-			te[ 11 ] = 0;
+		max(v) {
+			this.x = Math.max(this.x, v.x);
+			this.y = Math.max(this.y, v.y);
+			this.z = Math.max(this.z, v.z);
+			return this;
+		}
 
-			// bottom row
-			te[ 12 ] = 0;
-			te[ 13 ] = 0;
-			te[ 14 ] = 0;
-			te[ 15 ] = 1;
+		clamp(min, max) {
+			// assumes min < max, componentwise
+			this.x = Math.max(min.x, Math.min(max.x, this.x));
+			this.y = Math.max(min.y, Math.min(max.y, this.y));
+			this.z = Math.max(min.z, Math.min(max.z, this.z));
+			return this;
+		}
 
+		clampScalar(minVal, maxVal) {
+			this.x = Math.max(minVal, Math.min(maxVal, this.x));
+			this.y = Math.max(minVal, Math.min(maxVal, this.y));
+			this.z = Math.max(minVal, Math.min(maxVal, this.z));
 			return this;
+		}
 
-		},
+		clampLength(min, max) {
+			const length = this.length();
+			return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
+		}
 
-		makeRotationFromQuaternion: function ( q ) {
+		floor() {
+			this.x = Math.floor(this.x);
+			this.y = Math.floor(this.y);
+			this.z = Math.floor(this.z);
+			return this;
+		}
 
-			var te = this.elements;
+		ceil() {
+			this.x = Math.ceil(this.x);
+			this.y = Math.ceil(this.y);
+			this.z = Math.ceil(this.z);
+			return this;
+		}
 
-			var x = q._x, y = q._y, z = q._z, w = q._w;
-			var x2 = x + x, y2 = y + y, z2 = z + z;
-			var xx = x * x2, xy = x * y2, xz = x * z2;
-			var yy = y * y2, yz = y * z2, zz = z * z2;
-			var wx = w * x2, wy = w * y2, wz = w * z2;
+		round() {
+			this.x = Math.round(this.x);
+			this.y = Math.round(this.y);
+			this.z = Math.round(this.z);
+			return this;
+		}
 
-			te[ 0 ] = 1 - ( yy + zz );
-			te[ 4 ] = xy - wz;
-			te[ 8 ] = xz + wy;
+		roundToZero() {
+			this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
+			this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
+			this.z = this.z < 0 ? Math.ceil(this.z) : Math.floor(this.z);
+			return this;
+		}
 
-			te[ 1 ] = xy + wz;
-			te[ 5 ] = 1 - ( xx + zz );
-			te[ 9 ] = yz - wx;
+		negate() {
+			this.x = -this.x;
+			this.y = -this.y;
+			this.z = -this.z;
+			return this;
+		}
 
-			te[ 2 ] = xz - wy;
-			te[ 6 ] = yz + wx;
-			te[ 10 ] = 1 - ( xx + yy );
+		dot(v) {
+			return this.x * v.x + this.y * v.y + this.z * v.z;
+		} // TODO lengthSquared?
 
-			// last column
-			te[ 3 ] = 0;
-			te[ 7 ] = 0;
-			te[ 11 ] = 0;
 
-			// bottom row
-			te[ 12 ] = 0;
-			te[ 13 ] = 0;
-			te[ 14 ] = 0;
-			te[ 15 ] = 1;
+		lengthSq() {
+			return this.x * this.x + this.y * this.y + this.z * this.z;
+		}
 
-			return this;
+		length() {
+			return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z);
+		}
 
-		},
+		manhattanLength() {
+			return Math.abs(this.x) + Math.abs(this.y) + Math.abs(this.z);
+		}
 
-		lookAt: function () {
+		normalize() {
+			return this.divideScalar(this.length() || 1);
+		}
 
-			var x = new Vector3();
-			var y = new Vector3();
-			var z = new Vector3();
+		setLength(length) {
+			return this.normalize().multiplyScalar(length);
+		}
 
-			return function lookAt( eye, target, up ) {
+		lerp(v, alpha) {
+			this.x += (v.x - this.x) * alpha;
+			this.y += (v.y - this.y) * alpha;
+			this.z += (v.z - this.z) * alpha;
+			return this;
+		}
 
-				var te = this.elements;
+		lerpVectors(v1, v2, alpha) {
+			this.x = v1.x + (v2.x - v1.x) * alpha;
+			this.y = v1.y + (v2.y - v1.y) * alpha;
+			this.z = v1.z + (v2.z - v1.z) * alpha;
+			return this;
+		}
 
-				z.subVectors( eye, target );
+		cross(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.');
+				return this.crossVectors(v, w);
+			}
 
-				if ( z.lengthSq() === 0 ) {
+			return this.crossVectors(this, v);
+		}
 
-					// eye and target are in the same position
+		crossVectors(a, b) {
+			const ax = a.x,
+						ay = a.y,
+						az = a.z;
+			const bx = b.x,
+						by = b.y,
+						bz = b.z;
+			this.x = ay * bz - az * by;
+			this.y = az * bx - ax * bz;
+			this.z = ax * by - ay * bx;
+			return this;
+		}
 
-					z.z = 1;
+		projectOnVector(v) {
+			const denominator = v.lengthSq();
+			if (denominator === 0) return this.set(0, 0, 0);
+			const scalar = v.dot(this) / denominator;
+			return this.copy(v).multiplyScalar(scalar);
+		}
 
-				}
+		projectOnPlane(planeNormal) {
+			_vector$c.copy(this).projectOnVector(planeNormal);
 
-				z.normalize();
-				x.crossVectors( up, z );
+			return this.sub(_vector$c);
+		}
 
-				if ( x.lengthSq() === 0 ) {
+		reflect(normal) {
+			// reflect incident vector off plane orthogonal to normal
+			// normal is assumed to have unit length
+			return this.sub(_vector$c.copy(normal).multiplyScalar(2 * this.dot(normal)));
+		}
 
-					// up and z are parallel
+		angleTo(v) {
+			const denominator = Math.sqrt(this.lengthSq() * v.lengthSq());
+			if (denominator === 0) return Math.PI / 2;
+			const theta = this.dot(v) / denominator; // clamp, to handle numerical problems
 
-					if ( Math.abs( up.z ) === 1 ) {
+			return Math.acos(clamp(theta, -1, 1));
+		}
 
-						z.x += 0.0001;
+		distanceTo(v) {
+			return Math.sqrt(this.distanceToSquared(v));
+		}
 
-					} else {
+		distanceToSquared(v) {
+			const dx = this.x - v.x,
+						dy = this.y - v.y,
+						dz = this.z - v.z;
+			return dx * dx + dy * dy + dz * dz;
+		}
 
-						z.z += 0.0001;
+		manhattanDistanceTo(v) {
+			return Math.abs(this.x - v.x) + Math.abs(this.y - v.y) + Math.abs(this.z - v.z);
+		}
 
-					}
+		setFromSpherical(s) {
+			return this.setFromSphericalCoords(s.radius, s.phi, s.theta);
+		}
 
-					z.normalize();
-					x.crossVectors( up, z );
+		setFromSphericalCoords(radius, phi, theta) {
+			const sinPhiRadius = Math.sin(phi) * radius;
+			this.x = sinPhiRadius * Math.sin(theta);
+			this.y = Math.cos(phi) * radius;
+			this.z = sinPhiRadius * Math.cos(theta);
+			return this;
+		}
 
-				}
+		setFromCylindrical(c) {
+			return this.setFromCylindricalCoords(c.radius, c.theta, c.y);
+		}
 
-				x.normalize();
-				y.crossVectors( z, x );
+		setFromCylindricalCoords(radius, theta, y) {
+			this.x = radius * Math.sin(theta);
+			this.y = y;
+			this.z = radius * Math.cos(theta);
+			return this;
+		}
 
-				te[ 0 ] = x.x; te[ 4 ] = y.x; te[ 8 ] = z.x;
-				te[ 1 ] = x.y; te[ 5 ] = y.y; te[ 9 ] = z.y;
-				te[ 2 ] = x.z; te[ 6 ] = y.z; te[ 10 ] = z.z;
+		setFromMatrixPosition(m) {
+			const e = m.elements;
+			this.x = e[12];
+			this.y = e[13];
+			this.z = e[14];
+			return this;
+		}
 
-				return this;
+		setFromMatrixScale(m) {
+			const sx = this.setFromMatrixColumn(m, 0).length();
+			const sy = this.setFromMatrixColumn(m, 1).length();
+			const sz = this.setFromMatrixColumn(m, 2).length();
+			this.x = sx;
+			this.y = sy;
+			this.z = sz;
+			return this;
+		}
 
-			};
+		setFromMatrixColumn(m, index) {
+			return this.fromArray(m.elements, index * 4);
+		}
 
-		}(),
+		setFromMatrix3Column(m, index) {
+			return this.fromArray(m.elements, index * 3);
+		}
 
-		multiply: function ( m, n ) {
+		equals(v) {
+			return v.x === this.x && v.y === this.y && v.z === this.z;
+		}
 
-			if ( n !== undefined ) {
+		fromArray(array, offset = 0) {
+			this.x = array[offset];
+			this.y = array[offset + 1];
+			this.z = array[offset + 2];
+			return this;
+		}
 
-				console.warn( 'THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.' );
-				return this.multiplyMatrices( m, n );
+		toArray(array = [], offset = 0) {
+			array[offset] = this.x;
+			array[offset + 1] = this.y;
+			array[offset + 2] = this.z;
+			return array;
+		}
 
+		fromBufferAttribute(attribute, index, offset) {
+			if (offset !== undefined) {
+				console.warn('THREE.Vector3: offset has been removed from .fromBufferAttribute().');
 			}
 
-			return this.multiplyMatrices( this, m );
+			this.x = attribute.getX(index);
+			this.y = attribute.getY(index);
+			this.z = attribute.getZ(index);
+			return this;
+		}
 
-		},
+		random() {
+			this.x = Math.random();
+			this.y = Math.random();
+			this.z = Math.random();
+			return this;
+		}
 
-		premultiply: function ( m ) {
+	}
 
-			return this.multiplyMatrices( m, this );
+	Vector3.prototype.isVector3 = true;
 
-		},
+	const _vector$c = /*@__PURE__*/new Vector3();
 
-		multiplyMatrices: function ( a, b ) {
+	const _quaternion$4 = /*@__PURE__*/new Quaternion();
 
-			var ae = a.elements;
-			var be = b.elements;
-			var te = this.elements;
+	class Box3 {
+		constructor(min = new Vector3(+Infinity, +Infinity, +Infinity), max = new Vector3(-Infinity, -Infinity, -Infinity)) {
+			this.min = min;
+			this.max = max;
+		}
 
-			var a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];
-			var a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];
-			var a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];
-			var a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];
+		set(min, max) {
+			this.min.copy(min);
+			this.max.copy(max);
+			return this;
+		}
 
-			var b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];
-			var b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];
-			var b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];
-			var b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];
+		setFromArray(array) {
+			let minX = +Infinity;
+			let minY = +Infinity;
+			let minZ = +Infinity;
+			let maxX = -Infinity;
+			let maxY = -Infinity;
+			let maxZ = -Infinity;
 
-			te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
-			te[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
-			te[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
-			te[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;
+			for (let i = 0, l = array.length; i < l; i += 3) {
+				const x = array[i];
+				const y = array[i + 1];
+				const z = array[i + 2];
+				if (x < minX) minX = x;
+				if (y < minY) minY = y;
+				if (z < minZ) minZ = z;
+				if (x > maxX) maxX = x;
+				if (y > maxY) maxY = y;
+				if (z > maxZ) maxZ = z;
+			}
 
-			te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
-			te[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
-			te[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
-			te[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;
+			this.min.set(minX, minY, minZ);
+			this.max.set(maxX, maxY, maxZ);
+			return this;
+		}
 
-			te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
-			te[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
-			te[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
-			te[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;
+		setFromBufferAttribute(attribute) {
+			let minX = +Infinity;
+			let minY = +Infinity;
+			let minZ = +Infinity;
+			let maxX = -Infinity;
+			let maxY = -Infinity;
+			let maxZ = -Infinity;
 
-			te[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
-			te[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
-			te[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
-			te[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;
+			for (let i = 0, l = attribute.count; i < l; i++) {
+				const x = attribute.getX(i);
+				const y = attribute.getY(i);
+				const z = attribute.getZ(i);
+				if (x < minX) minX = x;
+				if (y < minY) minY = y;
+				if (z < minZ) minZ = z;
+				if (x > maxX) maxX = x;
+				if (y > maxY) maxY = y;
+				if (z > maxZ) maxZ = z;
+			}
 
+			this.min.set(minX, minY, minZ);
+			this.max.set(maxX, maxY, maxZ);
 			return this;
+		}
 
-		},
+		setFromPoints(points) {
+			this.makeEmpty();
+
+			for (let i = 0, il = points.length; i < il; i++) {
+				this.expandByPoint(points[i]);
+			}
+
+			return this;
+		}
 
-		multiplyScalar: function ( s ) {
+		setFromCenterAndSize(center, size) {
+			const halfSize = _vector$b.copy(size).multiplyScalar(0.5);
 
-			var te = this.elements;
+			this.min.copy(center).sub(halfSize);
+			this.max.copy(center).add(halfSize);
+			return this;
+		}
+
+		setFromObject(object) {
+			this.makeEmpty();
+			return this.expandByObject(object);
+		}
 
-			te[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;
-			te[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;
-			te[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;
-			te[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
+		copy(box) {
+			this.min.copy(box.min);
+			this.max.copy(box.max);
 			return this;
+		}
 
-		},
+		makeEmpty() {
+			this.min.x = this.min.y = this.min.z = +Infinity;
+			this.max.x = this.max.y = this.max.z = -Infinity;
+			return this;
+		}
 
-		applyToBufferAttribute: function () {
+		isEmpty() {
+			// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
+			return this.max.x < this.min.x || this.max.y < this.min.y || this.max.z < this.min.z;
+		}
 
-			var v1 = new Vector3();
+		getCenter(target) {
+			return this.isEmpty() ? target.set(0, 0, 0) : target.addVectors(this.min, this.max).multiplyScalar(0.5);
+		}
 
-			return function applyToBufferAttribute( attribute ) {
+		getSize(target) {
+			return this.isEmpty() ? target.set(0, 0, 0) : target.subVectors(this.max, this.min);
+		}
 
-				for ( var i = 0, l = attribute.count; i < l; i ++ ) {
+		expandByPoint(point) {
+			this.min.min(point);
+			this.max.max(point);
+			return this;
+		}
 
-					v1.x = attribute.getX( i );
-					v1.y = attribute.getY( i );
-					v1.z = attribute.getZ( i );
+		expandByVector(vector) {
+			this.min.sub(vector);
+			this.max.add(vector);
+			return this;
+		}
 
-					v1.applyMatrix4( this );
+		expandByScalar(scalar) {
+			this.min.addScalar(-scalar);
+			this.max.addScalar(scalar);
+			return this;
+		}
 
-					attribute.setXYZ( i, v1.x, v1.y, v1.z );
+		expandByObject(object) {
+			// Computes the world-axis-aligned bounding box of an object (including its children),
+			// accounting for both the object's, and children's, world transforms
+			object.updateWorldMatrix(false, false);
+			const geometry = object.geometry;
 
+			if (geometry !== undefined) {
+				if (geometry.boundingBox === null) {
+					geometry.computeBoundingBox();
 				}
 
-				return attribute;
+				_box$3.copy(geometry.boundingBox);
 
-			};
+				_box$3.applyMatrix4(object.matrixWorld);
 
-		}(),
+				this.union(_box$3);
+			}
 
-		determinant: function () {
+			const children = object.children;
 
-			var te = this.elements;
+			for (let i = 0, l = children.length; i < l; i++) {
+				this.expandByObject(children[i]);
+			}
 
-			var n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];
-			var n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];
-			var n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];
-			var n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];
+			return this;
+		}
 
-			//TODO: make this more efficient
-			//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )
+		containsPoint(point) {
+			return point.x < this.min.x || point.x > this.max.x || point.y < this.min.y || point.y > this.max.y || point.z < this.min.z || point.z > this.max.z ? false : true;
+		}
 
-			return (
-				n41 * (
-					+ n14 * n23 * n32
-					 - n13 * n24 * n32
-					 - n14 * n22 * n33
-					 + n12 * n24 * n33
-					 + n13 * n22 * n34
-					 - n12 * n23 * n34
-				) +
-				n42 * (
-					+ n11 * n23 * n34
-					 - n11 * n24 * n33
-					 + n14 * n21 * n33
-					 - n13 * n21 * n34
-					 + n13 * n24 * n31
-					 - n14 * n23 * n31
-				) +
-				n43 * (
-					+ n11 * n24 * n32
-					 - n11 * n22 * n34
-					 - n14 * n21 * n32
-					 + n12 * n21 * n34
-					 + n14 * n22 * n31
-					 - n12 * n24 * n31
-				) +
-				n44 * (
-					- n13 * n22 * n31
-					 - n11 * n23 * n32
-					 + n11 * n22 * n33
-					 + n13 * n21 * n32
-					 - n12 * n21 * n33
-					 + n12 * n23 * n31
-				)
-
-			);
+		containsBox(box) {
+			return this.min.x <= box.min.x && box.max.x <= this.max.x && this.min.y <= box.min.y && box.max.y <= this.max.y && this.min.z <= box.min.z && box.max.z <= this.max.z;
+		}
 
-		},
+		getParameter(point, target) {
+			// This can potentially have a divide by zero if the box
+			// has a size dimension of 0.
+			return target.set((point.x - this.min.x) / (this.max.x - this.min.x), (point.y - this.min.y) / (this.max.y - this.min.y), (point.z - this.min.z) / (this.max.z - this.min.z));
+		}
 
-		transpose: function () {
+		intersectsBox(box) {
+			// using 6 splitting planes to rule out intersections.
+			return box.max.x < this.min.x || box.min.x > this.max.x || box.max.y < this.min.y || box.min.y > this.max.y || box.max.z < this.min.z || box.min.z > this.max.z ? false : true;
+		}
 
-			var te = this.elements;
-			var tmp;
+		intersectsSphere(sphere) {
+			// Find the point on the AABB closest to the sphere center.
+			this.clampPoint(sphere.center, _vector$b); // If that point is inside the sphere, the AABB and sphere intersect.
 
-			tmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;
-			tmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;
-			tmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;
+			return _vector$b.distanceToSquared(sphere.center) <= sphere.radius * sphere.radius;
+		}
 
-			tmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;
-			tmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;
-			tmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;
+		intersectsPlane(plane) {
+			// We compute the minimum and maximum dot product values. If those values
+			// are on the same side (back or front) of the plane, then there is no intersection.
+			let min, max;
 
-			return this;
+			if (plane.normal.x > 0) {
+				min = plane.normal.x * this.min.x;
+				max = plane.normal.x * this.max.x;
+			} else {
+				min = plane.normal.x * this.max.x;
+				max = plane.normal.x * this.min.x;
+			}
 
-		},
+			if (plane.normal.y > 0) {
+				min += plane.normal.y * this.min.y;
+				max += plane.normal.y * this.max.y;
+			} else {
+				min += plane.normal.y * this.max.y;
+				max += plane.normal.y * this.min.y;
+			}
 
-		setPosition: function ( v ) {
+			if (plane.normal.z > 0) {
+				min += plane.normal.z * this.min.z;
+				max += plane.normal.z * this.max.z;
+			} else {
+				min += plane.normal.z * this.max.z;
+				max += plane.normal.z * this.min.z;
+			}
 
-			var te = this.elements;
+			return min <= -plane.constant && max >= -plane.constant;
+		}
 
-			te[ 12 ] = v.x;
-			te[ 13 ] = v.y;
-			te[ 14 ] = v.z;
+		intersectsTriangle(triangle) {
+			if (this.isEmpty()) {
+				return false;
+			} // compute box center and extents
 
-			return this;
 
-		},
+			this.getCenter(_center);
 
-		getInverse: function ( m, throwOnDegenerate ) {
+			_extents.subVectors(this.max, _center); // translate triangle to aabb origin
 
-			// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm
-			var te = this.elements,
-				me = m.elements,
 
-				n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ], n41 = me[ 3 ],
-				n12 = me[ 4 ], n22 = me[ 5 ], n32 = me[ 6 ], n42 = me[ 7 ],
-				n13 = me[ 8 ], n23 = me[ 9 ], n33 = me[ 10 ], n43 = me[ 11 ],
-				n14 = me[ 12 ], n24 = me[ 13 ], n34 = me[ 14 ], n44 = me[ 15 ],
+			_v0$2.subVectors(triangle.a, _center);
 
-				t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
-				t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
-				t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
-				t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
+			_v1$7.subVectors(triangle.b, _center);
 
-			var det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
+			_v2$3.subVectors(triangle.c, _center); // compute edge vectors for triangle
 
-			if ( det === 0 ) {
 
-				var msg = "THREE.Matrix4: .getInverse() can't invert matrix, determinant is 0";
+			_f0.subVectors(_v1$7, _v0$2);
 
-				if ( throwOnDegenerate === true ) {
+			_f1.subVectors(_v2$3, _v1$7);
 
-					throw new Error( msg );
+			_f2.subVectors(_v0$2, _v2$3); // test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb
+			// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation
+			// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)
 
-				} else {
 
-					console.warn( msg );
+			let axes = [0, -_f0.z, _f0.y, 0, -_f1.z, _f1.y, 0, -_f2.z, _f2.y, _f0.z, 0, -_f0.x, _f1.z, 0, -_f1.x, _f2.z, 0, -_f2.x, -_f0.y, _f0.x, 0, -_f1.y, _f1.x, 0, -_f2.y, _f2.x, 0];
 
-				}
+			if (!satForAxes(axes, _v0$2, _v1$7, _v2$3, _extents)) {
+				return false;
+			} // test 3 face normals from the aabb
 
-				return this.identity();
 
-			}
+			axes = [1, 0, 0, 0, 1, 0, 0, 0, 1];
 
-			var detInv = 1 / det;
+			if (!satForAxes(axes, _v0$2, _v1$7, _v2$3, _extents)) {
+				return false;
+			} // finally testing the face normal of the triangle
+			// use already existing triangle edge vectors here
 
-			te[ 0 ] = t11 * detInv;
-			te[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;
-			te[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;
-			te[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;
 
-			te[ 4 ] = t12 * detInv;
-			te[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;
-			te[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;
-			te[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;
+			_triangleNormal.crossVectors(_f0, _f1);
 
-			te[ 8 ] = t13 * detInv;
-			te[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;
-			te[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;
-			te[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;
+			axes = [_triangleNormal.x, _triangleNormal.y, _triangleNormal.z];
+			return satForAxes(axes, _v0$2, _v1$7, _v2$3, _extents);
+		}
 
-			te[ 12 ] = t14 * detInv;
-			te[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;
-			te[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;
-			te[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;
+		clampPoint(point, target) {
+			return target.copy(point).clamp(this.min, this.max);
+		}
 
-			return this;
+		distanceToPoint(point) {
+			const clampedPoint = _vector$b.copy(point).clamp(this.min, this.max);
 
-		},
+			return clampedPoint.sub(point).length();
+		}
 
-		scale: function ( v ) {
+		getBoundingSphere(target) {
+			this.getCenter(target.center);
+			target.radius = this.getSize(_vector$b).length() * 0.5;
+			return target;
+		}
 
-			var te = this.elements;
-			var x = v.x, y = v.y, z = v.z;
+		intersect(box) {
+			this.min.max(box.min);
+			this.max.min(box.max); // ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.
 
-			te[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;
-			te[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;
-			te[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;
-			te[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;
+			if (this.isEmpty()) this.makeEmpty();
+			return this;
+		}
 
+		union(box) {
+			this.min.min(box.min);
+			this.max.max(box.max);
 			return this;
+		}
 
-		},
+		applyMatrix4(matrix) {
+			// transform of empty box is an empty box.
+			if (this.isEmpty()) return this; // NOTE: I am using a binary pattern to specify all 2^3 combinations below
 
-		getMaxScaleOnAxis: function () {
+			_points[0].set(this.min.x, this.min.y, this.min.z).applyMatrix4(matrix); // 000
 
-			var te = this.elements;
 
-			var scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];
-			var scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];
-			var scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];
+			_points[1].set(this.min.x, this.min.y, this.max.z).applyMatrix4(matrix); // 001
 
-			return Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );
 
-		},
+			_points[2].set(this.min.x, this.max.y, this.min.z).applyMatrix4(matrix); // 010
 
-		makeTranslation: function ( x, y, z ) {
 
-			this.set(
+			_points[3].set(this.min.x, this.max.y, this.max.z).applyMatrix4(matrix); // 011
 
-				1, 0, 0, x,
-				0, 1, 0, y,
-				0, 0, 1, z,
-				0, 0, 0, 1
 
-			);
+			_points[4].set(this.max.x, this.min.y, this.min.z).applyMatrix4(matrix); // 100
 
-			return this;
 
-		},
+			_points[5].set(this.max.x, this.min.y, this.max.z).applyMatrix4(matrix); // 101
 
-		makeRotationX: function ( theta ) {
 
-			var c = Math.cos( theta ), s = Math.sin( theta );
+			_points[6].set(this.max.x, this.max.y, this.min.z).applyMatrix4(matrix); // 110
 
-			this.set(
 
-				1, 0, 0, 0,
-				0, c, - s, 0,
-				0, s, c, 0,
-				0, 0, 0, 1
+			_points[7].set(this.max.x, this.max.y, this.max.z).applyMatrix4(matrix); // 111
 
-			);
 
+			this.setFromPoints(_points);
 			return this;
+		}
 
-		},
+		translate(offset) {
+			this.min.add(offset);
+			this.max.add(offset);
+			return this;
+		}
 
-		makeRotationY: function ( theta ) {
+		equals(box) {
+			return box.min.equals(this.min) && box.max.equals(this.max);
+		}
 
-			var c = Math.cos( theta ), s = Math.sin( theta );
+	}
 
-			this.set(
+	Box3.prototype.isBox3 = true;
+	const _points = [/*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3()];
 
-				 c, 0, s, 0,
-				 0, 1, 0, 0,
-				- s, 0, c, 0,
-				 0, 0, 0, 1
+	const _vector$b = /*@__PURE__*/new Vector3();
 
-			);
+	const _box$3 = /*@__PURE__*/new Box3(); // triangle centered vertices
 
-			return this;
 
-		},
+	const _v0$2 = /*@__PURE__*/new Vector3();
 
-		makeRotationZ: function ( theta ) {
+	const _v1$7 = /*@__PURE__*/new Vector3();
 
-			var c = Math.cos( theta ), s = Math.sin( theta );
+	const _v2$3 = /*@__PURE__*/new Vector3(); // triangle edge vectors
 
-			this.set(
 
-				c, - s, 0, 0,
-				s, c, 0, 0,
-				0, 0, 1, 0,
-				0, 0, 0, 1
+	const _f0 = /*@__PURE__*/new Vector3();
 
-			);
+	const _f1 = /*@__PURE__*/new Vector3();
 
-			return this;
+	const _f2 = /*@__PURE__*/new Vector3();
 
-		},
+	const _center = /*@__PURE__*/new Vector3();
 
-		makeRotationAxis: function ( axis, angle ) {
+	const _extents = /*@__PURE__*/new Vector3();
 
-			// Based on http://www.gamedev.net/reference/articles/article1199.asp
+	const _triangleNormal = /*@__PURE__*/new Vector3();
 
-			var c = Math.cos( angle );
-			var s = Math.sin( angle );
-			var t = 1 - c;
-			var x = axis.x, y = axis.y, z = axis.z;
-			var tx = t * x, ty = t * y;
+	const _testAxis = /*@__PURE__*/new Vector3();
 
-			this.set(
+	function satForAxes(axes, v0, v1, v2, extents) {
+		for (let i = 0, j = axes.length - 3; i <= j; i += 3) {
+			_testAxis.fromArray(axes, i); // project the aabb onto the seperating axis
 
-				tx * x + c, tx * y - s * z, tx * z + s * y, 0,
-				tx * y + s * z, ty * y + c, ty * z - s * x, 0,
-				tx * z - s * y, ty * z + s * x, t * z * z + c, 0,
-				0, 0, 0, 1
 
-			);
+			const r = extents.x * Math.abs(_testAxis.x) + extents.y * Math.abs(_testAxis.y) + extents.z * Math.abs(_testAxis.z); // project all 3 vertices of the triangle onto the seperating axis
 
-			 return this;
+			const p0 = v0.dot(_testAxis);
+			const p1 = v1.dot(_testAxis);
+			const p2 = v2.dot(_testAxis); // actual test, basically see if either of the most extreme of the triangle points intersects r
 
-		},
+			if (Math.max(-Math.max(p0, p1, p2), Math.min(p0, p1, p2)) > r) {
+				// points of the projected triangle are outside the projected half-length of the aabb
+				// the axis is seperating and we can exit
+				return false;
+			}
+		}
+
+		return true;
+	}
 
-		makeScale: function ( x, y, z ) {
+	const _box$2 = /*@__PURE__*/new Box3();
 
-			this.set(
+	const _v1$6 = /*@__PURE__*/new Vector3();
 
-				x, 0, 0, 0,
-				0, y, 0, 0,
-				0, 0, z, 0,
-				0, 0, 0, 1
+	const _toFarthestPoint = /*@__PURE__*/new Vector3();
 
-			);
+	const _toPoint = /*@__PURE__*/new Vector3();
 
-			return this;
+	class Sphere {
+		constructor(center = new Vector3(), radius = -1) {
+			this.center = center;
+			this.radius = radius;
+		}
 
-		},
+		set(center, radius) {
+			this.center.copy(center);
+			this.radius = radius;
+			return this;
+		}
 
-		makeShear: function ( x, y, z ) {
+		setFromPoints(points, optionalCenter) {
+			const center = this.center;
 
-			this.set(
+			if (optionalCenter !== undefined) {
+				center.copy(optionalCenter);
+			} else {
+				_box$2.setFromPoints(points).getCenter(center);
+			}
 
-				1, y, z, 0,
-				x, 1, z, 0,
-				x, y, 1, 0,
-				0, 0, 0, 1
+			let maxRadiusSq = 0;
 
-			);
+			for (let i = 0, il = points.length; i < il; i++) {
+				maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(points[i]));
+			}
 
+			this.radius = Math.sqrt(maxRadiusSq);
 			return this;
+		}
 
-		},
-
-		compose: function ( position, quaternion, scale ) {
+		copy(sphere) {
+			this.center.copy(sphere.center);
+			this.radius = sphere.radius;
+			return this;
+		}
 
-			this.makeRotationFromQuaternion( quaternion );
-			this.scale( scale );
-			this.setPosition( position );
+		isEmpty() {
+			return this.radius < 0;
+		}
 
+		makeEmpty() {
+			this.center.set(0, 0, 0);
+			this.radius = -1;
 			return this;
+		}
 
-		},
-
-		decompose: function () {
+		containsPoint(point) {
+			return point.distanceToSquared(this.center) <= this.radius * this.radius;
+		}
 
-			var vector = new Vector3();
-			var matrix = new Matrix4();
+		distanceToPoint(point) {
+			return point.distanceTo(this.center) - this.radius;
+		}
 
-			return function decompose( position, quaternion, scale ) {
+		intersectsSphere(sphere) {
+			const radiusSum = this.radius + sphere.radius;
+			return sphere.center.distanceToSquared(this.center) <= radiusSum * radiusSum;
+		}
 
-				var te = this.elements;
+		intersectsBox(box) {
+			return box.intersectsSphere(this);
+		}
 
-				var sx = vector.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();
-				var sy = vector.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();
-				var sz = vector.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();
+		intersectsPlane(plane) {
+			return Math.abs(plane.distanceToPoint(this.center)) <= this.radius;
+		}
 
-				// if determine is negative, we need to invert one scale
-				var det = this.determinant();
-				if ( det < 0 ) sx = - sx;
+		clampPoint(point, target) {
+			const deltaLengthSq = this.center.distanceToSquared(point);
+			target.copy(point);
 
-				position.x = te[ 12 ];
-				position.y = te[ 13 ];
-				position.z = te[ 14 ];
+			if (deltaLengthSq > this.radius * this.radius) {
+				target.sub(this.center).normalize();
+				target.multiplyScalar(this.radius).add(this.center);
+			}
 
-				// scale the rotation part
-				matrix.copy( this );
+			return target;
+		}
 
-				var invSX = 1 / sx;
-				var invSY = 1 / sy;
-				var invSZ = 1 / sz;
+		getBoundingBox(target) {
+			if (this.isEmpty()) {
+				// Empty sphere produces empty bounding box
+				target.makeEmpty();
+				return target;
+			}
 
-				matrix.elements[ 0 ] *= invSX;
-				matrix.elements[ 1 ] *= invSX;
-				matrix.elements[ 2 ] *= invSX;
+			target.set(this.center, this.center);
+			target.expandByScalar(this.radius);
+			return target;
+		}
 
-				matrix.elements[ 4 ] *= invSY;
-				matrix.elements[ 5 ] *= invSY;
-				matrix.elements[ 6 ] *= invSY;
+		applyMatrix4(matrix) {
+			this.center.applyMatrix4(matrix);
+			this.radius = this.radius * matrix.getMaxScaleOnAxis();
+			return this;
+		}
 
-				matrix.elements[ 8 ] *= invSZ;
-				matrix.elements[ 9 ] *= invSZ;
-				matrix.elements[ 10 ] *= invSZ;
+		translate(offset) {
+			this.center.add(offset);
+			return this;
+		}
 
-				quaternion.setFromRotationMatrix( matrix );
+		expandByPoint(point) {
+			// from https://github.com/juj/MathGeoLib/blob/2940b99b99cfe575dd45103ef20f4019dee15b54/src/Geometry/Sphere.cpp#L649-L671
+			_toPoint.subVectors(point, this.center);
 
-				scale.x = sx;
-				scale.y = sy;
-				scale.z = sz;
+			const lengthSq = _toPoint.lengthSq();
 
-				return this;
+			if (lengthSq > this.radius * this.radius) {
+				const length = Math.sqrt(lengthSq);
+				const missingRadiusHalf = (length - this.radius) * 0.5; // Nudge this sphere towards the target point. Add half the missing distance to radius,
+				// and the other half to position. This gives a tighter enclosure, instead of if
+				// the whole missing distance were just added to radius.
 
-			};
+				this.center.add(_toPoint.multiplyScalar(missingRadiusHalf / length));
+				this.radius += missingRadiusHalf;
+			}
 
-		}(),
+			return this;
+		}
 
-		makePerspective: function ( left, right, top, bottom, near, far ) {
+		union(sphere) {
+			// from https://github.com/juj/MathGeoLib/blob/2940b99b99cfe575dd45103ef20f4019dee15b54/src/Geometry/Sphere.cpp#L759-L769
+			// To enclose another sphere into this sphere, we only need to enclose two points:
+			// 1) Enclose the farthest point on the other sphere into this sphere.
+			// 2) Enclose the opposite point of the farthest point into this sphere.
+			_toFarthestPoint.subVectors(sphere.center, this.center).normalize().multiplyScalar(sphere.radius);
 
-			if ( far === undefined ) {
+			this.expandByPoint(_v1$6.copy(sphere.center).add(_toFarthestPoint));
+			this.expandByPoint(_v1$6.copy(sphere.center).sub(_toFarthestPoint));
+			return this;
+		}
 
-				console.warn( 'THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.' );
+		equals(sphere) {
+			return sphere.center.equals(this.center) && sphere.radius === this.radius;
+		}
 
-			}
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-			var te = this.elements;
-			var x = 2 * near / ( right - left );
-			var y = 2 * near / ( top - bottom );
+	}
 
-			var a = ( right + left ) / ( right - left );
-			var b = ( top + bottom ) / ( top - bottom );
-			var c = - ( far + near ) / ( far - near );
-			var d = - 2 * far * near / ( far - near );
+	const _vector$a = /*@__PURE__*/new Vector3();
 
-			te[ 0 ] = x;	te[ 4 ] = 0;	te[ 8 ] = a;	te[ 12 ] = 0;
-			te[ 1 ] = 0;	te[ 5 ] = y;	te[ 9 ] = b;	te[ 13 ] = 0;
-			te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = c;	te[ 14 ] = d;
-			te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = - 1;	te[ 15 ] = 0;
+	const _segCenter = /*@__PURE__*/new Vector3();
 
-			return this;
+	const _segDir = /*@__PURE__*/new Vector3();
 
-		},
+	const _diff = /*@__PURE__*/new Vector3();
 
-		makeOrthographic: function ( left, right, top, bottom, near, far ) {
+	const _edge1 = /*@__PURE__*/new Vector3();
 
-			var te = this.elements;
-			var w = 1.0 / ( right - left );
-			var h = 1.0 / ( top - bottom );
-			var p = 1.0 / ( far - near );
+	const _edge2 = /*@__PURE__*/new Vector3();
 
-			var x = ( right + left ) * w;
-			var y = ( top + bottom ) * h;
-			var z = ( far + near ) * p;
+	const _normal$1 = /*@__PURE__*/new Vector3();
 
-			te[ 0 ] = 2 * w;	te[ 4 ] = 0;	te[ 8 ] = 0;	te[ 12 ] = - x;
-			te[ 1 ] = 0;	te[ 5 ] = 2 * h;	te[ 9 ] = 0;	te[ 13 ] = - y;
-			te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = - 2 * p;	te[ 14 ] = - z;
-			te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = 0;	te[ 15 ] = 1;
+	class Ray {
+		constructor(origin = new Vector3(), direction = new Vector3(0, 0, -1)) {
+			this.origin = origin;
+			this.direction = direction;
+		}
 
+		set(origin, direction) {
+			this.origin.copy(origin);
+			this.direction.copy(direction);
 			return this;
+		}
 
-		},
+		copy(ray) {
+			this.origin.copy(ray.origin);
+			this.direction.copy(ray.direction);
+			return this;
+		}
 
-		equals: function ( matrix ) {
+		at(t, target) {
+			return target.copy(this.direction).multiplyScalar(t).add(this.origin);
+		}
 
-			var te = this.elements;
-			var me = matrix.elements;
+		lookAt(v) {
+			this.direction.copy(v).sub(this.origin).normalize();
+			return this;
+		}
 
-			for ( var i = 0; i < 16; i ++ ) {
+		recast(t) {
+			this.origin.copy(this.at(t, _vector$a));
+			return this;
+		}
 
-				if ( te[ i ] !== me[ i ] ) return false;
+		closestPointToPoint(point, target) {
+			target.subVectors(point, this.origin);
+			const directionDistance = target.dot(this.direction);
 
+			if (directionDistance < 0) {
+				return target.copy(this.origin);
 			}
 
-			return true;
+			return target.copy(this.direction).multiplyScalar(directionDistance).add(this.origin);
+		}
 
-		},
+		distanceToPoint(point) {
+			return Math.sqrt(this.distanceSqToPoint(point));
+		}
 
-		fromArray: function ( array, offset ) {
+		distanceSqToPoint(point) {
+			const directionDistance = _vector$a.subVectors(point, this.origin).dot(this.direction); // point behind the ray
 
-			if ( offset === undefined ) offset = 0;
 
-			for ( var i = 0; i < 16; i ++ ) {
+			if (directionDistance < 0) {
+				return this.origin.distanceToSquared(point);
+			}
 
-				this.elements[ i ] = array[ i + offset ];
+			_vector$a.copy(this.direction).multiplyScalar(directionDistance).add(this.origin);
 
-			}
+			return _vector$a.distanceToSquared(point);
+		}
 
-			return this;
+		distanceSqToSegment(v0, v1, optionalPointOnRay, optionalPointOnSegment) {
+			// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteDistRaySegment.h
+			// It returns the min distance between the ray and the segment
+			// defined by v0 and v1
+			// It can also set two optional targets :
+			// - The closest point on the ray
+			// - The closest point on the segment
+			_segCenter.copy(v0).add(v1).multiplyScalar(0.5);
 
-		},
+			_segDir.copy(v1).sub(v0).normalize();
 
-		toArray: function ( array, offset ) {
+			_diff.copy(this.origin).sub(_segCenter);
 
-			if ( array === undefined ) array = [];
-			if ( offset === undefined ) offset = 0;
+			const segExtent = v0.distanceTo(v1) * 0.5;
+			const a01 = -this.direction.dot(_segDir);
 
-			var te = this.elements;
+			const b0 = _diff.dot(this.direction);
 
-			array[ offset ] = te[ 0 ];
-			array[ offset + 1 ] = te[ 1 ];
-			array[ offset + 2 ] = te[ 2 ];
-			array[ offset + 3 ] = te[ 3 ];
+			const b1 = -_diff.dot(_segDir);
 
-			array[ offset + 4 ] = te[ 4 ];
-			array[ offset + 5 ] = te[ 5 ];
-			array[ offset + 6 ] = te[ 6 ];
-			array[ offset + 7 ] = te[ 7 ];
+			const c = _diff.lengthSq();
 
-			array[ offset + 8 ] = te[ 8 ];
-			array[ offset + 9 ] = te[ 9 ];
-			array[ offset + 10 ] = te[ 10 ];
-			array[ offset + 11 ] = te[ 11 ];
+			const det = Math.abs(1 - a01 * a01);
+			let s0, s1, sqrDist, extDet;
 
-			array[ offset + 12 ] = te[ 12 ];
-			array[ offset + 13 ] = te[ 13 ];
-			array[ offset + 14 ] = te[ 14 ];
-			array[ offset + 15 ] = te[ 15 ];
+			if (det > 0) {
+				// The ray and segment are not parallel.
+				s0 = a01 * b1 - b0;
+				s1 = a01 * b0 - b1;
+				extDet = segExtent * det;
 
-			return array;
+				if (s0 >= 0) {
+					if (s1 >= -extDet) {
+						if (s1 <= extDet) {
+							// region 0
+							// Minimum at interior points of ray and segment.
+							const invDet = 1 / det;
+							s0 *= invDet;
+							s1 *= invDet;
+							sqrDist = s0 * (s0 + a01 * s1 + 2 * b0) + s1 * (a01 * s0 + s1 + 2 * b1) + c;
+						} else {
+							// region 1
+							s1 = segExtent;
+							s0 = Math.max(0, -(a01 * s1 + b0));
+							sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
+						}
+					} else {
+						// region 5
+						s1 = -segExtent;
+						s0 = Math.max(0, -(a01 * s1 + b0));
+						sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
+					}
+				} else {
+					if (s1 <= -extDet) {
+						// region 4
+						s0 = Math.max(0, -(-a01 * segExtent + b0));
+						s1 = s0 > 0 ? -segExtent : Math.min(Math.max(-segExtent, -b1), segExtent);
+						sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
+					} else if (s1 <= extDet) {
+						// region 3
+						s0 = 0;
+						s1 = Math.min(Math.max(-segExtent, -b1), segExtent);
+						sqrDist = s1 * (s1 + 2 * b1) + c;
+					} else {
+						// region 2
+						s0 = Math.max(0, -(a01 * segExtent + b0));
+						s1 = s0 > 0 ? segExtent : Math.min(Math.max(-segExtent, -b1), segExtent);
+						sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
+					}
+				}
+			} else {
+				// Ray and segment are parallel.
+				s1 = a01 > 0 ? -segExtent : segExtent;
+				s0 = Math.max(0, -(a01 * s1 + b0));
+				sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
+			}
+
+			if (optionalPointOnRay) {
+				optionalPointOnRay.copy(this.direction).multiplyScalar(s0).add(this.origin);
+			}
+
+			if (optionalPointOnSegment) {
+				optionalPointOnSegment.copy(_segDir).multiplyScalar(s1).add(_segCenter);
+			}
 
+			return sqrDist;
 		}
 
-	} );
+		intersectSphere(sphere, target) {
+			_vector$a.subVectors(sphere.center, this.origin);
 
-	/**
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 * @author bhouston / http://clara.io
-	 */
+			const tca = _vector$a.dot(this.direction);
 
-	function Quaternion( x, y, z, w ) {
+			const d2 = _vector$a.dot(_vector$a) - tca * tca;
+			const radius2 = sphere.radius * sphere.radius;
+			if (d2 > radius2) return null;
+			const thc = Math.sqrt(radius2 - d2); // t0 = first intersect point - entrance on front of sphere
 
-		this._x = x || 0;
-		this._y = y || 0;
-		this._z = z || 0;
-		this._w = ( w !== undefined ) ? w : 1;
+			const t0 = tca - thc; // t1 = second intersect point - exit point on back of sphere
 
-	}
+			const t1 = tca + thc; // test to see if both t0 and t1 are behind the ray - if so, return null
 
-	Object.assign( Quaternion, {
+			if (t0 < 0 && t1 < 0) return null; // test to see if t0 is behind the ray:
+			// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,
+			// in order to always return an intersect point that is in front of the ray.
 
-		slerp: function ( qa, qb, qm, t ) {
+			if (t0 < 0) return this.at(t1, target); // else t0 is in front of the ray, so return the first collision point scaled by t0
 
-			return qm.copy( qa ).slerp( qb, t );
+			return this.at(t0, target);
+		}
 
-		},
+		intersectsSphere(sphere) {
+			return this.distanceSqToPoint(sphere.center) <= sphere.radius * sphere.radius;
+		}
 
-		slerpFlat: function ( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {
+		distanceToPlane(plane) {
+			const denominator = plane.normal.dot(this.direction);
 
-			// fuzz-free, array-based Quaternion SLERP operation
+			if (denominator === 0) {
+				// line is coplanar, return origin
+				if (plane.distanceToPoint(this.origin) === 0) {
+					return 0;
+				} // Null is preferable to undefined since undefined means.... it is undefined
+
+
+				return null;
+			}
 
-			var x0 = src0[ srcOffset0 + 0 ],
-				y0 = src0[ srcOffset0 + 1 ],
-				z0 = src0[ srcOffset0 + 2 ],
-				w0 = src0[ srcOffset0 + 3 ],
+			const t = -(this.origin.dot(plane.normal) + plane.constant) / denominator; // Return if the ray never intersects the plane
 
-				x1 = src1[ srcOffset1 + 0 ],
-				y1 = src1[ srcOffset1 + 1 ],
-				z1 = src1[ srcOffset1 + 2 ],
-				w1 = src1[ srcOffset1 + 3 ];
+			return t >= 0 ? t : null;
+		}
 
-			if ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {
+		intersectPlane(plane, target) {
+			const t = this.distanceToPlane(plane);
 
-				var s = 1 - t,
+			if (t === null) {
+				return null;
+			}
 
-					cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
+			return this.at(t, target);
+		}
 
-					dir = ( cos >= 0 ? 1 : - 1 ),
-					sqrSin = 1 - cos * cos;
+		intersectsPlane(plane) {
+			// check if the ray lies on the plane first
+			const distToPoint = plane.distanceToPoint(this.origin);
 
-				// Skip the Slerp for tiny steps to avoid numeric problems:
-				if ( sqrSin > Number.EPSILON ) {
+			if (distToPoint === 0) {
+				return true;
+			}
 
-					var sin = Math.sqrt( sqrSin ),
-						len = Math.atan2( sin, cos * dir );
+			const denominator = plane.normal.dot(this.direction);
 
-					s = Math.sin( s * len ) / sin;
-					t = Math.sin( t * len ) / sin;
+			if (denominator * distToPoint < 0) {
+				return true;
+			} // ray origin is behind the plane (and is pointing behind it)
 
-				}
 
-				var tDir = t * dir;
+			return false;
+		}
 
-				x0 = x0 * s + x1 * tDir;
-				y0 = y0 * s + y1 * tDir;
-				z0 = z0 * s + z1 * tDir;
-				w0 = w0 * s + w1 * tDir;
+		intersectBox(box, target) {
+			let tmin, tmax, tymin, tymax, tzmin, tzmax;
+			const invdirx = 1 / this.direction.x,
+						invdiry = 1 / this.direction.y,
+						invdirz = 1 / this.direction.z;
+			const origin = this.origin;
 
-				// Normalize in case we just did a lerp:
-				if ( s === 1 - t ) {
+			if (invdirx >= 0) {
+				tmin = (box.min.x - origin.x) * invdirx;
+				tmax = (box.max.x - origin.x) * invdirx;
+			} else {
+				tmin = (box.max.x - origin.x) * invdirx;
+				tmax = (box.min.x - origin.x) * invdirx;
+			}
 
-					var f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );
+			if (invdiry >= 0) {
+				tymin = (box.min.y - origin.y) * invdiry;
+				tymax = (box.max.y - origin.y) * invdiry;
+			} else {
+				tymin = (box.max.y - origin.y) * invdiry;
+				tymax = (box.min.y - origin.y) * invdiry;
+			}
 
-					x0 *= f;
-					y0 *= f;
-					z0 *= f;
-					w0 *= f;
+			if (tmin > tymax || tymin > tmax) return null; // These lines also handle the case where tmin or tmax is NaN
+			// (result of 0 * Infinity). x !== x returns true if x is NaN
 
-				}
+			if (tymin > tmin || tmin !== tmin) tmin = tymin;
+			if (tymax < tmax || tmax !== tmax) tmax = tymax;
 
+			if (invdirz >= 0) {
+				tzmin = (box.min.z - origin.z) * invdirz;
+				tzmax = (box.max.z - origin.z) * invdirz;
+			} else {
+				tzmin = (box.max.z - origin.z) * invdirz;
+				tzmax = (box.min.z - origin.z) * invdirz;
 			}
 
-			dst[ dstOffset ] = x0;
-			dst[ dstOffset + 1 ] = y0;
-			dst[ dstOffset + 2 ] = z0;
-			dst[ dstOffset + 3 ] = w0;
+			if (tmin > tzmax || tzmin > tmax) return null;
+			if (tzmin > tmin || tmin !== tmin) tmin = tzmin;
+			if (tzmax < tmax || tmax !== tmax) tmax = tzmax; //return point closest to the ray (positive side)
 
+			if (tmax < 0) return null;
+			return this.at(tmin >= 0 ? tmin : tmax, target);
 		}
 
-	} );
+		intersectsBox(box) {
+			return this.intersectBox(box, _vector$a) !== null;
+		}
 
-	Object.defineProperties( Quaternion.prototype, {
+		intersectTriangle(a, b, c, backfaceCulling, target) {
+			// Compute the offset origin, edges, and normal.
+			// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h
+			_edge1.subVectors(b, a);
 
-		x: {
+			_edge2.subVectors(c, a);
 
-			get: function () {
+			_normal$1.crossVectors(_edge1, _edge2); // Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
+			// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
+			//	 |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
+			//	 |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
+			//	 |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)
 
-				return this._x;
 
-			},
+			let DdN = this.direction.dot(_normal$1);
+			let sign;
 
-			set: function ( value ) {
+			if (DdN > 0) {
+				if (backfaceCulling) return null;
+				sign = 1;
+			} else if (DdN < 0) {
+				sign = -1;
+				DdN = -DdN;
+			} else {
+				return null;
+			}
+
+			_diff.subVectors(this.origin, a);
 
-				this._x = value;
-				this.onChangeCallback();
+			const DdQxE2 = sign * this.direction.dot(_edge2.crossVectors(_diff, _edge2)); // b1 < 0, no intersection
 
+			if (DdQxE2 < 0) {
+				return null;
 			}
 
-		},
+			const DdE1xQ = sign * this.direction.dot(_edge1.cross(_diff)); // b2 < 0, no intersection
 
-		y: {
+			if (DdE1xQ < 0) {
+				return null;
+			} // b1+b2 > 1, no intersection
 
-			get: function () {
 
-				return this._y;
+			if (DdQxE2 + DdE1xQ > DdN) {
+				return null;
+			} // Line intersects triangle, check if ray does.
 
-			},
 
-			set: function ( value ) {
+			const QdN = -sign * _diff.dot(_normal$1); // t < 0, no intersection
 
-				this._y = value;
-				this.onChangeCallback();
 
-			}
+			if (QdN < 0) {
+				return null;
+			} // Ray intersects triangle.
 
-		},
 
-		z: {
+			return this.at(QdN / DdN, target);
+		}
 
-			get: function () {
+		applyMatrix4(matrix4) {
+			this.origin.applyMatrix4(matrix4);
+			this.direction.transformDirection(matrix4);
+			return this;
+		}
 
-				return this._z;
+		equals(ray) {
+			return ray.origin.equals(this.origin) && ray.direction.equals(this.direction);
+		}
 
-			},
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-			set: function ( value ) {
+	}
 
-				this._z = value;
-				this.onChangeCallback();
+	class Matrix4 {
+		constructor() {
+			this.elements = [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1];
 
+			if (arguments.length > 0) {
+				console.error('THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.');
 			}
+		}
 
-		},
+		set(n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44) {
+			const te = this.elements;
+			te[0] = n11;
+			te[4] = n12;
+			te[8] = n13;
+			te[12] = n14;
+			te[1] = n21;
+			te[5] = n22;
+			te[9] = n23;
+			te[13] = n24;
+			te[2] = n31;
+			te[6] = n32;
+			te[10] = n33;
+			te[14] = n34;
+			te[3] = n41;
+			te[7] = n42;
+			te[11] = n43;
+			te[15] = n44;
+			return this;
+		}
 
-		w: {
+		identity() {
+			this.set(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
+			return this;
+		}
 
-			get: function () {
+		clone() {
+			return new Matrix4().fromArray(this.elements);
+		}
 
-				return this._w;
+		copy(m) {
+			const te = this.elements;
+			const me = m.elements;
+			te[0] = me[0];
+			te[1] = me[1];
+			te[2] = me[2];
+			te[3] = me[3];
+			te[4] = me[4];
+			te[5] = me[5];
+			te[6] = me[6];
+			te[7] = me[7];
+			te[8] = me[8];
+			te[9] = me[9];
+			te[10] = me[10];
+			te[11] = me[11];
+			te[12] = me[12];
+			te[13] = me[13];
+			te[14] = me[14];
+			te[15] = me[15];
+			return this;
+		}
 
-			},
+		copyPosition(m) {
+			const te = this.elements,
+						me = m.elements;
+			te[12] = me[12];
+			te[13] = me[13];
+			te[14] = me[14];
+			return this;
+		}
 
-			set: function ( value ) {
+		setFromMatrix3(m) {
+			const me = m.elements;
+			this.set(me[0], me[3], me[6], 0, me[1], me[4], me[7], 0, me[2], me[5], me[8], 0, 0, 0, 0, 1);
+			return this;
+		}
 
-				this._w = value;
-				this.onChangeCallback();
+		extractBasis(xAxis, yAxis, zAxis) {
+			xAxis.setFromMatrixColumn(this, 0);
+			yAxis.setFromMatrixColumn(this, 1);
+			zAxis.setFromMatrixColumn(this, 2);
+			return this;
+		}
+
+		makeBasis(xAxis, yAxis, zAxis) {
+			this.set(xAxis.x, yAxis.x, zAxis.x, 0, xAxis.y, yAxis.y, zAxis.y, 0, xAxis.z, yAxis.z, zAxis.z, 0, 0, 0, 0, 1);
+			return this;
+		}
+
+		extractRotation(m) {
+			// this method does not support reflection matrices
+			const te = this.elements;
+			const me = m.elements;
+
+			const scaleX = 1 / _v1$5.setFromMatrixColumn(m, 0).length();
+
+			const scaleY = 1 / _v1$5.setFromMatrixColumn(m, 1).length();
+
+			const scaleZ = 1 / _v1$5.setFromMatrixColumn(m, 2).length();
+
+			te[0] = me[0] * scaleX;
+			te[1] = me[1] * scaleX;
+			te[2] = me[2] * scaleX;
+			te[3] = 0;
+			te[4] = me[4] * scaleY;
+			te[5] = me[5] * scaleY;
+			te[6] = me[6] * scaleY;
+			te[7] = 0;
+			te[8] = me[8] * scaleZ;
+			te[9] = me[9] * scaleZ;
+			te[10] = me[10] * scaleZ;
+			te[11] = 0;
+			te[12] = 0;
+			te[13] = 0;
+			te[14] = 0;
+			te[15] = 1;
+			return this;
+		}
+
+		makeRotationFromEuler(euler) {
+			if (!(euler && euler.isEuler)) {
+				console.error('THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.');
+			}
+
+			const te = this.elements;
+			const x = euler.x,
+						y = euler.y,
+						z = euler.z;
+			const a = Math.cos(x),
+						b = Math.sin(x);
+			const c = Math.cos(y),
+						d = Math.sin(y);
+			const e = Math.cos(z),
+						f = Math.sin(z);
+
+			if (euler.order === 'XYZ') {
+				const ae = a * e,
+							af = a * f,
+							be = b * e,
+							bf = b * f;
+				te[0] = c * e;
+				te[4] = -c * f;
+				te[8] = d;
+				te[1] = af + be * d;
+				te[5] = ae - bf * d;
+				te[9] = -b * c;
+				te[2] = bf - ae * d;
+				te[6] = be + af * d;
+				te[10] = a * c;
+			} else if (euler.order === 'YXZ') {
+				const ce = c * e,
+							cf = c * f,
+							de = d * e,
+							df = d * f;
+				te[0] = ce + df * b;
+				te[4] = de * b - cf;
+				te[8] = a * d;
+				te[1] = a * f;
+				te[5] = a * e;
+				te[9] = -b;
+				te[2] = cf * b - de;
+				te[6] = df + ce * b;
+				te[10] = a * c;
+			} else if (euler.order === 'ZXY') {
+				const ce = c * e,
+							cf = c * f,
+							de = d * e,
+							df = d * f;
+				te[0] = ce - df * b;
+				te[4] = -a * f;
+				te[8] = de + cf * b;
+				te[1] = cf + de * b;
+				te[5] = a * e;
+				te[9] = df - ce * b;
+				te[2] = -a * d;
+				te[6] = b;
+				te[10] = a * c;
+			} else if (euler.order === 'ZYX') {
+				const ae = a * e,
+							af = a * f,
+							be = b * e,
+							bf = b * f;
+				te[0] = c * e;
+				te[4] = be * d - af;
+				te[8] = ae * d + bf;
+				te[1] = c * f;
+				te[5] = bf * d + ae;
+				te[9] = af * d - be;
+				te[2] = -d;
+				te[6] = b * c;
+				te[10] = a * c;
+			} else if (euler.order === 'YZX') {
+				const ac = a * c,
+							ad = a * d,
+							bc = b * c,
+							bd = b * d;
+				te[0] = c * e;
+				te[4] = bd - ac * f;
+				te[8] = bc * f + ad;
+				te[1] = f;
+				te[5] = a * e;
+				te[9] = -b * e;
+				te[2] = -d * e;
+				te[6] = ad * f + bc;
+				te[10] = ac - bd * f;
+			} else if (euler.order === 'XZY') {
+				const ac = a * c,
+							ad = a * d,
+							bc = b * c,
+							bd = b * d;
+				te[0] = c * e;
+				te[4] = -f;
+				te[8] = d * e;
+				te[1] = ac * f + bd;
+				te[5] = a * e;
+				te[9] = ad * f - bc;
+				te[2] = bc * f - ad;
+				te[6] = b * e;
+				te[10] = bd * f + ac;
+			} // bottom row
+
+
+			te[3] = 0;
+			te[7] = 0;
+			te[11] = 0; // last column
+
+			te[12] = 0;
+			te[13] = 0;
+			te[14] = 0;
+			te[15] = 1;
+			return this;
+		}
+
+		makeRotationFromQuaternion(q) {
+			return this.compose(_zero, q, _one);
+		}
+
+		lookAt(eye, target, up) {
+			const te = this.elements;
+
+			_z.subVectors(eye, target);
+
+			if (_z.lengthSq() === 0) {
+				// eye and target are in the same position
+				_z.z = 1;
+			}
+
+			_z.normalize();
+
+			_x.crossVectors(up, _z);
+
+			if (_x.lengthSq() === 0) {
+				// up and z are parallel
+				if (Math.abs(up.z) === 1) {
+					_z.x += 0.0001;
+				} else {
+					_z.z += 0.0001;
+				}
+
+				_z.normalize();
+
+				_x.crossVectors(up, _z);
+			}
+
+			_x.normalize();
+
+			_y.crossVectors(_z, _x);
+
+			te[0] = _x.x;
+			te[4] = _y.x;
+			te[8] = _z.x;
+			te[1] = _x.y;
+			te[5] = _y.y;
+			te[9] = _z.y;
+			te[2] = _x.z;
+			te[6] = _y.z;
+			te[10] = _z.z;
+			return this;
+		}
+
+		multiply(m, n) {
+			if (n !== undefined) {
+				console.warn('THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.');
+				return this.multiplyMatrices(m, n);
+			}
+
+			return this.multiplyMatrices(this, m);
+		}
+
+		premultiply(m) {
+			return this.multiplyMatrices(m, this);
+		}
+
+		multiplyMatrices(a, b) {
+			const ae = a.elements;
+			const be = b.elements;
+			const te = this.elements;
+			const a11 = ae[0],
+						a12 = ae[4],
+						a13 = ae[8],
+						a14 = ae[12];
+			const a21 = ae[1],
+						a22 = ae[5],
+						a23 = ae[9],
+						a24 = ae[13];
+			const a31 = ae[2],
+						a32 = ae[6],
+						a33 = ae[10],
+						a34 = ae[14];
+			const a41 = ae[3],
+						a42 = ae[7],
+						a43 = ae[11],
+						a44 = ae[15];
+			const b11 = be[0],
+						b12 = be[4],
+						b13 = be[8],
+						b14 = be[12];
+			const b21 = be[1],
+						b22 = be[5],
+						b23 = be[9],
+						b24 = be[13];
+			const b31 = be[2],
+						b32 = be[6],
+						b33 = be[10],
+						b34 = be[14];
+			const b41 = be[3],
+						b42 = be[7],
+						b43 = be[11],
+						b44 = be[15];
+			te[0] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
+			te[4] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
+			te[8] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
+			te[12] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;
+			te[1] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
+			te[5] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
+			te[9] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
+			te[13] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;
+			te[2] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
+			te[6] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
+			te[10] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
+			te[14] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;
+			te[3] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
+			te[7] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
+			te[11] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
+			te[15] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;
+			return this;
+		}
+
+		multiplyScalar(s) {
+			const te = this.elements;
+			te[0] *= s;
+			te[4] *= s;
+			te[8] *= s;
+			te[12] *= s;
+			te[1] *= s;
+			te[5] *= s;
+			te[9] *= s;
+			te[13] *= s;
+			te[2] *= s;
+			te[6] *= s;
+			te[10] *= s;
+			te[14] *= s;
+			te[3] *= s;
+			te[7] *= s;
+			te[11] *= s;
+			te[15] *= s;
+			return this;
+		}
+
+		determinant() {
+			const te = this.elements;
+			const n11 = te[0],
+						n12 = te[4],
+						n13 = te[8],
+						n14 = te[12];
+			const n21 = te[1],
+						n22 = te[5],
+						n23 = te[9],
+						n24 = te[13];
+			const n31 = te[2],
+						n32 = te[6],
+						n33 = te[10],
+						n34 = te[14];
+			const n41 = te[3],
+						n42 = te[7],
+						n43 = te[11],
+						n44 = te[15]; //TODO: make this more efficient
+			//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )
 
+			return n41 * (+n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34) + n42 * (+n11 * n23 * n34 - n11 * n24 * n33 + n14 * n21 * n33 - n13 * n21 * n34 + n13 * n24 * n31 - n14 * n23 * n31) + n43 * (+n11 * n24 * n32 - n11 * n22 * n34 - n14 * n21 * n32 + n12 * n21 * n34 + n14 * n22 * n31 - n12 * n24 * n31) + n44 * (-n13 * n22 * n31 - n11 * n23 * n32 + n11 * n22 * n33 + n13 * n21 * n32 - n12 * n21 * n33 + n12 * n23 * n31);
+		}
+
+		transpose() {
+			const te = this.elements;
+			let tmp;
+			tmp = te[1];
+			te[1] = te[4];
+			te[4] = tmp;
+			tmp = te[2];
+			te[2] = te[8];
+			te[8] = tmp;
+			tmp = te[6];
+			te[6] = te[9];
+			te[9] = tmp;
+			tmp = te[3];
+			te[3] = te[12];
+			te[12] = tmp;
+			tmp = te[7];
+			te[7] = te[13];
+			te[13] = tmp;
+			tmp = te[11];
+			te[11] = te[14];
+			te[14] = tmp;
+			return this;
+		}
+
+		setPosition(x, y, z) {
+			const te = this.elements;
+
+			if (x.isVector3) {
+				te[12] = x.x;
+				te[13] = x.y;
+				te[14] = x.z;
+			} else {
+				te[12] = x;
+				te[13] = y;
+				te[14] = z;
 			}
 
+			return this;
 		}
 
-	} );
+		invert() {
+			// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm
+			const te = this.elements,
+						n11 = te[0],
+						n21 = te[1],
+						n31 = te[2],
+						n41 = te[3],
+						n12 = te[4],
+						n22 = te[5],
+						n32 = te[6],
+						n42 = te[7],
+						n13 = te[8],
+						n23 = te[9],
+						n33 = te[10],
+						n43 = te[11],
+						n14 = te[12],
+						n24 = te[13],
+						n34 = te[14],
+						n44 = te[15],
+						t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
+						t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
+						t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
+						t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
+			const det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
+			if (det === 0) return this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+			const detInv = 1 / det;
+			te[0] = t11 * detInv;
+			te[1] = (n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44) * detInv;
+			te[2] = (n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44) * detInv;
+			te[3] = (n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43) * detInv;
+			te[4] = t12 * detInv;
+			te[5] = (n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44) * detInv;
+			te[6] = (n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44) * detInv;
+			te[7] = (n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43) * detInv;
+			te[8] = t13 * detInv;
+			te[9] = (n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44) * detInv;
+			te[10] = (n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44) * detInv;
+			te[11] = (n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43) * detInv;
+			te[12] = t14 * detInv;
+			te[13] = (n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34) * detInv;
+			te[14] = (n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34) * detInv;
+			te[15] = (n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33) * detInv;
+			return this;
+		}
+
+		scale(v) {
+			const te = this.elements;
+			const x = v.x,
+						y = v.y,
+						z = v.z;
+			te[0] *= x;
+			te[4] *= y;
+			te[8] *= z;
+			te[1] *= x;
+			te[5] *= y;
+			te[9] *= z;
+			te[2] *= x;
+			te[6] *= y;
+			te[10] *= z;
+			te[3] *= x;
+			te[7] *= y;
+			te[11] *= z;
+			return this;
+		}
+
+		getMaxScaleOnAxis() {
+			const te = this.elements;
+			const scaleXSq = te[0] * te[0] + te[1] * te[1] + te[2] * te[2];
+			const scaleYSq = te[4] * te[4] + te[5] * te[5] + te[6] * te[6];
+			const scaleZSq = te[8] * te[8] + te[9] * te[9] + te[10] * te[10];
+			return Math.sqrt(Math.max(scaleXSq, scaleYSq, scaleZSq));
+		}
+
+		makeTranslation(x, y, z) {
+			this.set(1, 0, 0, x, 0, 1, 0, y, 0, 0, 1, z, 0, 0, 0, 1);
+			return this;
+		}
+
+		makeRotationX(theta) {
+			const c = Math.cos(theta),
+						s = Math.sin(theta);
+			this.set(1, 0, 0, 0, 0, c, -s, 0, 0, s, c, 0, 0, 0, 0, 1);
+			return this;
+		}
+
+		makeRotationY(theta) {
+			const c = Math.cos(theta),
+						s = Math.sin(theta);
+			this.set(c, 0, s, 0, 0, 1, 0, 0, -s, 0, c, 0, 0, 0, 0, 1);
+			return this;
+		}
+
+		makeRotationZ(theta) {
+			const c = Math.cos(theta),
+						s = Math.sin(theta);
+			this.set(c, -s, 0, 0, s, c, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
+			return this;
+		}
+
+		makeRotationAxis(axis, angle) {
+			// Based on http://www.gamedev.net/reference/articles/article1199.asp
+			const c = Math.cos(angle);
+			const s = Math.sin(angle);
+			const t = 1 - c;
+			const x = axis.x,
+						y = axis.y,
+						z = axis.z;
+			const tx = t * x,
+						ty = t * y;
+			this.set(tx * x + c, tx * y - s * z, tx * z + s * y, 0, tx * y + s * z, ty * y + c, ty * z - s * x, 0, tx * z - s * y, ty * z + s * x, t * z * z + c, 0, 0, 0, 0, 1);
+			return this;
+		}
+
+		makeScale(x, y, z) {
+			this.set(x, 0, 0, 0, 0, y, 0, 0, 0, 0, z, 0, 0, 0, 0, 1);
+			return this;
+		}
+
+		makeShear(xy, xz, yx, yz, zx, zy) {
+			this.set(1, yx, zx, 0, xy, 1, zy, 0, xz, yz, 1, 0, 0, 0, 0, 1);
+			return this;
+		}
+
+		compose(position, quaternion, scale) {
+			const te = this.elements;
+			const x = quaternion._x,
+						y = quaternion._y,
+						z = quaternion._z,
+						w = quaternion._w;
+			const x2 = x + x,
+						y2 = y + y,
+						z2 = z + z;
+			const xx = x * x2,
+						xy = x * y2,
+						xz = x * z2;
+			const yy = y * y2,
+						yz = y * z2,
+						zz = z * z2;
+			const wx = w * x2,
+						wy = w * y2,
+						wz = w * z2;
+			const sx = scale.x,
+						sy = scale.y,
+						sz = scale.z;
+			te[0] = (1 - (yy + zz)) * sx;
+			te[1] = (xy + wz) * sx;
+			te[2] = (xz - wy) * sx;
+			te[3] = 0;
+			te[4] = (xy - wz) * sy;
+			te[5] = (1 - (xx + zz)) * sy;
+			te[6] = (yz + wx) * sy;
+			te[7] = 0;
+			te[8] = (xz + wy) * sz;
+			te[9] = (yz - wx) * sz;
+			te[10] = (1 - (xx + yy)) * sz;
+			te[11] = 0;
+			te[12] = position.x;
+			te[13] = position.y;
+			te[14] = position.z;
+			te[15] = 1;
+			return this;
+		}
+
+		decompose(position, quaternion, scale) {
+			const te = this.elements;
+
+			let sx = _v1$5.set(te[0], te[1], te[2]).length();
+
+			const sy = _v1$5.set(te[4], te[5], te[6]).length();
+
+			const sz = _v1$5.set(te[8], te[9], te[10]).length(); // if determine is negative, we need to invert one scale
+
+
+			const det = this.determinant();
+			if (det < 0) sx = -sx;
+			position.x = te[12];
+			position.y = te[13];
+			position.z = te[14]; // scale the rotation part
+
+			_m1$2.copy(this);
+
+			const invSX = 1 / sx;
+			const invSY = 1 / sy;
+			const invSZ = 1 / sz;
+			_m1$2.elements[0] *= invSX;
+			_m1$2.elements[1] *= invSX;
+			_m1$2.elements[2] *= invSX;
+			_m1$2.elements[4] *= invSY;
+			_m1$2.elements[5] *= invSY;
+			_m1$2.elements[6] *= invSY;
+			_m1$2.elements[8] *= invSZ;
+			_m1$2.elements[9] *= invSZ;
+			_m1$2.elements[10] *= invSZ;
+			quaternion.setFromRotationMatrix(_m1$2);
+			scale.x = sx;
+			scale.y = sy;
+			scale.z = sz;
+			return this;
+		}
+
+		makePerspective(left, right, top, bottom, near, far) {
+			if (far === undefined) {
+				console.warn('THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.');
+			}
+
+			const te = this.elements;
+			const x = 2 * near / (right - left);
+			const y = 2 * near / (top - bottom);
+			const a = (right + left) / (right - left);
+			const b = (top + bottom) / (top - bottom);
+			const c = -(far + near) / (far - near);
+			const d = -2 * far * near / (far - near);
+			te[0] = x;
+			te[4] = 0;
+			te[8] = a;
+			te[12] = 0;
+			te[1] = 0;
+			te[5] = y;
+			te[9] = b;
+			te[13] = 0;
+			te[2] = 0;
+			te[6] = 0;
+			te[10] = c;
+			te[14] = d;
+			te[3] = 0;
+			te[7] = 0;
+			te[11] = -1;
+			te[15] = 0;
+			return this;
+		}
+
+		makeOrthographic(left, right, top, bottom, near, far) {
+			const te = this.elements;
+			const w = 1.0 / (right - left);
+			const h = 1.0 / (top - bottom);
+			const p = 1.0 / (far - near);
+			const x = (right + left) * w;
+			const y = (top + bottom) * h;
+			const z = (far + near) * p;
+			te[0] = 2 * w;
+			te[4] = 0;
+			te[8] = 0;
+			te[12] = -x;
+			te[1] = 0;
+			te[5] = 2 * h;
+			te[9] = 0;
+			te[13] = -y;
+			te[2] = 0;
+			te[6] = 0;
+			te[10] = -2 * p;
+			te[14] = -z;
+			te[3] = 0;
+			te[7] = 0;
+			te[11] = 0;
+			te[15] = 1;
+			return this;
+		}
+
+		equals(matrix) {
+			const te = this.elements;
+			const me = matrix.elements;
+
+			for (let i = 0; i < 16; i++) {
+				if (te[i] !== me[i]) return false;
+			}
 
-	Object.assign( Quaternion.prototype, {
+			return true;
+		}
 
-		set: function ( x, y, z, w ) {
+		fromArray(array, offset = 0) {
+			for (let i = 0; i < 16; i++) {
+				this.elements[i] = array[i + offset];
+			}
 
-			this._x = x;
-			this._y = y;
-			this._z = z;
-			this._w = w;
+			return this;
+		}
 
-			this.onChangeCallback();
+		toArray(array = [], offset = 0) {
+			const te = this.elements;
+			array[offset] = te[0];
+			array[offset + 1] = te[1];
+			array[offset + 2] = te[2];
+			array[offset + 3] = te[3];
+			array[offset + 4] = te[4];
+			array[offset + 5] = te[5];
+			array[offset + 6] = te[6];
+			array[offset + 7] = te[7];
+			array[offset + 8] = te[8];
+			array[offset + 9] = te[9];
+			array[offset + 10] = te[10];
+			array[offset + 11] = te[11];
+			array[offset + 12] = te[12];
+			array[offset + 13] = te[13];
+			array[offset + 14] = te[14];
+			array[offset + 15] = te[15];
+			return array;
+		}
 
-			return this;
+	}
 
-		},
+	Matrix4.prototype.isMatrix4 = true;
 
-		clone: function () {
+	const _v1$5 = /*@__PURE__*/new Vector3();
 
-			return new this.constructor( this._x, this._y, this._z, this._w );
+	const _m1$2 = /*@__PURE__*/new Matrix4();
 
-		},
+	const _zero = /*@__PURE__*/new Vector3(0, 0, 0);
 
-		copy: function ( quaternion ) {
+	const _one = /*@__PURE__*/new Vector3(1, 1, 1);
 
-			this._x = quaternion.x;
-			this._y = quaternion.y;
-			this._z = quaternion.z;
-			this._w = quaternion.w;
+	const _x = /*@__PURE__*/new Vector3();
 
-			this.onChangeCallback();
+	const _y = /*@__PURE__*/new Vector3();
 
-			return this;
+	const _z = /*@__PURE__*/new Vector3();
 
-		},
+	const _matrix$1 = /*@__PURE__*/new Matrix4();
 
-		setFromEuler: function ( euler, update ) {
+	const _quaternion$3 = /*@__PURE__*/new Quaternion();
 
-			if ( ! ( euler && euler.isEuler ) ) {
+	class Euler {
+		constructor(x = 0, y = 0, z = 0, order = Euler.DefaultOrder) {
+			this._x = x;
+			this._y = y;
+			this._z = z;
+			this._order = order;
+		}
+
+		get x() {
+			return this._x;
+		}
 
-				throw new Error( 'THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.' );
+		set x(value) {
+			this._x = value;
 
-			}
+			this._onChangeCallback();
+		}
 
-			var x = euler._x, y = euler._y, z = euler._z, order = euler.order;
+		get y() {
+			return this._y;
+		}
 
-			// http://www.mathworks.com/matlabcentral/fileexchange/
-			// 	20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/
-			//	content/SpinCalc.m
+		set y(value) {
+			this._y = value;
 
-			var cos = Math.cos;
-			var sin = Math.sin;
+			this._onChangeCallback();
+		}
 
-			var c1 = cos( x / 2 );
-			var c2 = cos( y / 2 );
-			var c3 = cos( z / 2 );
+		get z() {
+			return this._z;
+		}
 
-			var s1 = sin( x / 2 );
-			var s2 = sin( y / 2 );
-			var s3 = sin( z / 2 );
+		set z(value) {
+			this._z = value;
 
-			if ( order === 'XYZ' ) {
+			this._onChangeCallback();
+		}
 
-				this._x = s1 * c2 * c3 + c1 * s2 * s3;
-				this._y = c1 * s2 * c3 - s1 * c2 * s3;
-				this._z = c1 * c2 * s3 + s1 * s2 * c3;
-				this._w = c1 * c2 * c3 - s1 * s2 * s3;
+		get order() {
+			return this._order;
+		}
 
-			} else if ( order === 'YXZ' ) {
+		set order(value) {
+			this._order = value;
 
-				this._x = s1 * c2 * c3 + c1 * s2 * s3;
-				this._y = c1 * s2 * c3 - s1 * c2 * s3;
-				this._z = c1 * c2 * s3 - s1 * s2 * c3;
-				this._w = c1 * c2 * c3 + s1 * s2 * s3;
+			this._onChangeCallback();
+		}
 
-			} else if ( order === 'ZXY' ) {
+		set(x, y, z, order = this._order) {
+			this._x = x;
+			this._y = y;
+			this._z = z;
+			this._order = order;
 
-				this._x = s1 * c2 * c3 - c1 * s2 * s3;
-				this._y = c1 * s2 * c3 + s1 * c2 * s3;
-				this._z = c1 * c2 * s3 + s1 * s2 * c3;
-				this._w = c1 * c2 * c3 - s1 * s2 * s3;
+			this._onChangeCallback();
 
-			} else if ( order === 'ZYX' ) {
+			return this;
+		}
 
-				this._x = s1 * c2 * c3 - c1 * s2 * s3;
-				this._y = c1 * s2 * c3 + s1 * c2 * s3;
-				this._z = c1 * c2 * s3 - s1 * s2 * c3;
-				this._w = c1 * c2 * c3 + s1 * s2 * s3;
+		clone() {
+			return new this.constructor(this._x, this._y, this._z, this._order);
+		}
 
-			} else if ( order === 'YZX' ) {
+		copy(euler) {
+			this._x = euler._x;
+			this._y = euler._y;
+			this._z = euler._z;
+			this._order = euler._order;
 
-				this._x = s1 * c2 * c3 + c1 * s2 * s3;
-				this._y = c1 * s2 * c3 + s1 * c2 * s3;
-				this._z = c1 * c2 * s3 - s1 * s2 * c3;
-				this._w = c1 * c2 * c3 - s1 * s2 * s3;
+			this._onChangeCallback();
 
-			} else if ( order === 'XZY' ) {
+			return this;
+		}
 
-				this._x = s1 * c2 * c3 - c1 * s2 * s3;
-				this._y = c1 * s2 * c3 - s1 * c2 * s3;
-				this._z = c1 * c2 * s3 + s1 * s2 * c3;
-				this._w = c1 * c2 * c3 + s1 * s2 * s3;
+		setFromRotationMatrix(m, order = this._order, update = true) {
+			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+			const te = m.elements;
+			const m11 = te[0],
+						m12 = te[4],
+						m13 = te[8];
+			const m21 = te[1],
+						m22 = te[5],
+						m23 = te[9];
+			const m31 = te[2],
+						m32 = te[6],
+						m33 = te[10];
+
+			switch (order) {
+				case 'XYZ':
+					this._y = Math.asin(clamp(m13, -1, 1));
+
+					if (Math.abs(m13) < 0.9999999) {
+						this._x = Math.atan2(-m23, m33);
+						this._z = Math.atan2(-m12, m11);
+					} else {
+						this._x = Math.atan2(m32, m22);
+						this._z = 0;
+					}
 
-			}
+					break;
 
-			if ( update !== false ) this.onChangeCallback();
+				case 'YXZ':
+					this._x = Math.asin(-clamp(m23, -1, 1));
 
-			return this;
+					if (Math.abs(m23) < 0.9999999) {
+						this._y = Math.atan2(m13, m33);
+						this._z = Math.atan2(m21, m22);
+					} else {
+						this._y = Math.atan2(-m31, m11);
+						this._z = 0;
+					}
 
-		},
+					break;
 
-		setFromAxisAngle: function ( axis, angle ) {
+				case 'ZXY':
+					this._x = Math.asin(clamp(m32, -1, 1));
 
-			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm
+					if (Math.abs(m32) < 0.9999999) {
+						this._y = Math.atan2(-m31, m33);
+						this._z = Math.atan2(-m12, m22);
+					} else {
+						this._y = 0;
+						this._z = Math.atan2(m21, m11);
+					}
 
-			// assumes axis is normalized
+					break;
 
-			var halfAngle = angle / 2, s = Math.sin( halfAngle );
+				case 'ZYX':
+					this._y = Math.asin(-clamp(m31, -1, 1));
 
-			this._x = axis.x * s;
-			this._y = axis.y * s;
-			this._z = axis.z * s;
-			this._w = Math.cos( halfAngle );
+					if (Math.abs(m31) < 0.9999999) {
+						this._x = Math.atan2(m32, m33);
+						this._z = Math.atan2(m21, m11);
+					} else {
+						this._x = 0;
+						this._z = Math.atan2(-m12, m22);
+					}
 
-			this.onChangeCallback();
+					break;
 
-			return this;
+				case 'YZX':
+					this._z = Math.asin(clamp(m21, -1, 1));
 
-		},
+					if (Math.abs(m21) < 0.9999999) {
+						this._x = Math.atan2(-m23, m22);
+						this._y = Math.atan2(-m31, m11);
+					} else {
+						this._x = 0;
+						this._y = Math.atan2(m13, m33);
+					}
 
-		setFromRotationMatrix: function ( m ) {
+					break;
 
-			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
+				case 'XZY':
+					this._z = Math.asin(-clamp(m12, -1, 1));
 
-			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+					if (Math.abs(m12) < 0.9999999) {
+						this._x = Math.atan2(m32, m22);
+						this._y = Math.atan2(m13, m11);
+					} else {
+						this._x = Math.atan2(-m23, m33);
+						this._y = 0;
+					}
 
-			var te = m.elements,
+					break;
 
-				m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
-				m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
-				m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],
+				default:
+					console.warn('THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order);
+			}
 
-				trace = m11 + m22 + m33,
-				s;
+			this._order = order;
+			if (update === true) this._onChangeCallback();
+			return this;
+		}
 
-			if ( trace > 0 ) {
+		setFromQuaternion(q, order, update) {
+			_matrix$1.makeRotationFromQuaternion(q);
 
-				s = 0.5 / Math.sqrt( trace + 1.0 );
+			return this.setFromRotationMatrix(_matrix$1, order, update);
+		}
 
-				this._w = 0.25 / s;
-				this._x = ( m32 - m23 ) * s;
-				this._y = ( m13 - m31 ) * s;
-				this._z = ( m21 - m12 ) * s;
+		setFromVector3(v, order = this._order) {
+			return this.set(v.x, v.y, v.z, order);
+		}
 
-			} else if ( m11 > m22 && m11 > m33 ) {
+		reorder(newOrder) {
+			// WARNING: this discards revolution information -bhouston
+			_quaternion$3.setFromEuler(this);
 
-				s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );
+			return this.setFromQuaternion(_quaternion$3, newOrder);
+		}
 
-				this._w = ( m32 - m23 ) / s;
-				this._x = 0.25 * s;
-				this._y = ( m12 + m21 ) / s;
-				this._z = ( m13 + m31 ) / s;
+		equals(euler) {
+			return euler._x === this._x && euler._y === this._y && euler._z === this._z && euler._order === this._order;
+		}
 
-			} else if ( m22 > m33 ) {
+		fromArray(array) {
+			this._x = array[0];
+			this._y = array[1];
+			this._z = array[2];
+			if (array[3] !== undefined) this._order = array[3];
 
-				s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );
+			this._onChangeCallback();
 
-				this._w = ( m13 - m31 ) / s;
-				this._x = ( m12 + m21 ) / s;
-				this._y = 0.25 * s;
-				this._z = ( m23 + m32 ) / s;
+			return this;
+		}
 
+		toArray(array = [], offset = 0) {
+			array[offset] = this._x;
+			array[offset + 1] = this._y;
+			array[offset + 2] = this._z;
+			array[offset + 3] = this._order;
+			return array;
+		}
+
+		toVector3(optionalResult) {
+			if (optionalResult) {
+				return optionalResult.set(this._x, this._y, this._z);
 			} else {
+				return new Vector3(this._x, this._y, this._z);
+			}
+		}
 
-				s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );
+		_onChange(callback) {
+			this._onChangeCallback = callback;
+			return this;
+		}
 
-				this._w = ( m21 - m12 ) / s;
-				this._x = ( m13 + m31 ) / s;
-				this._y = ( m23 + m32 ) / s;
-				this._z = 0.25 * s;
+		_onChangeCallback() {}
 
-			}
+	}
 
-			this.onChangeCallback();
+	Euler.prototype.isEuler = true;
+	Euler.DefaultOrder = 'XYZ';
+	Euler.RotationOrders = ['XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX'];
 
-			return this;
+	class Layers {
+		constructor() {
+			this.mask = 1 | 0;
+		}
 
-		},
+		set(channel) {
+			this.mask = 1 << channel | 0;
+		}
 
-		setFromUnitVectors: function () {
+		enable(channel) {
+			this.mask |= 1 << channel | 0;
+		}
 
-			// assumes direction vectors vFrom and vTo are normalized
+		enableAll() {
+			this.mask = 0xffffffff | 0;
+		}
 
-			var v1 = new Vector3();
-			var r;
+		toggle(channel) {
+			this.mask ^= 1 << channel | 0;
+		}
 
-			var EPS = 0.000001;
+		disable(channel) {
+			this.mask &= ~(1 << channel | 0);
+		}
 
-			return function setFromUnitVectors( vFrom, vTo ) {
+		disableAll() {
+			this.mask = 0;
+		}
 
-				if ( v1 === undefined ) v1 = new Vector3();
+		test(layers) {
+			return (this.mask & layers.mask) !== 0;
+		}
 
-				r = vFrom.dot( vTo ) + 1;
+	}
 
-				if ( r < EPS ) {
+	let _object3DId = 0;
 
-					r = 0;
+	const _v1$4 = /*@__PURE__*/new Vector3();
 
-					if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {
+	const _q1 = /*@__PURE__*/new Quaternion();
 
-						v1.set( - vFrom.y, vFrom.x, 0 );
+	const _m1$1 = /*@__PURE__*/new Matrix4();
 
-					} else {
+	const _target = /*@__PURE__*/new Vector3();
 
-						v1.set( 0, - vFrom.z, vFrom.y );
+	const _position$3 = /*@__PURE__*/new Vector3();
 
-					}
+	const _scale$2 = /*@__PURE__*/new Vector3();
 
-				} else {
+	const _quaternion$2 = /*@__PURE__*/new Quaternion();
 
-					v1.crossVectors( vFrom, vTo );
+	const _xAxis = /*@__PURE__*/new Vector3(1, 0, 0);
 
-				}
+	const _yAxis = /*@__PURE__*/new Vector3(0, 1, 0);
 
-				this._x = v1.x;
-				this._y = v1.y;
-				this._z = v1.z;
-				this._w = r;
+	const _zAxis = /*@__PURE__*/new Vector3(0, 0, 1);
 
-				return this.normalize();
+	const _addedEvent = {
+		type: 'added'
+	};
+	const _removedEvent = {
+		type: 'removed'
+	};
 
-			};
+	class Object3D extends EventDispatcher {
+		constructor() {
+			super();
+			Object.defineProperty(this, 'id', {
+				value: _object3DId++
+			});
+			this.uuid = generateUUID();
+			this.name = '';
+			this.type = 'Object3D';
+			this.parent = null;
+			this.children = [];
+			this.up = Object3D.DefaultUp.clone();
+			const position = new Vector3();
+			const rotation = new Euler();
+			const quaternion = new Quaternion();
+			const scale = new Vector3(1, 1, 1);
 
-		}(),
+			function onRotationChange() {
+				quaternion.setFromEuler(rotation, false);
+			}
 
-		inverse: function () {
+			function onQuaternionChange() {
+				rotation.setFromQuaternion(quaternion, undefined, false);
+			}
 
-			// quaternion is assumed to have unit length
+			rotation._onChange(onRotationChange);
 
-			return this.conjugate();
+			quaternion._onChange(onQuaternionChange);
 
-		},
+			Object.defineProperties(this, {
+				position: {
+					configurable: true,
+					enumerable: true,
+					value: position
+				},
+				rotation: {
+					configurable: true,
+					enumerable: true,
+					value: rotation
+				},
+				quaternion: {
+					configurable: true,
+					enumerable: true,
+					value: quaternion
+				},
+				scale: {
+					configurable: true,
+					enumerable: true,
+					value: scale
+				},
+				modelViewMatrix: {
+					value: new Matrix4()
+				},
+				normalMatrix: {
+					value: new Matrix3()
+				}
+			});
+			this.matrix = new Matrix4();
+			this.matrixWorld = new Matrix4();
+			this.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;
+			this.matrixWorldNeedsUpdate = false;
+			this.layers = new Layers();
+			this.visible = true;
+			this.castShadow = false;
+			this.receiveShadow = false;
+			this.frustumCulled = true;
+			this.renderOrder = 0;
+			this.animations = [];
+			this.userData = {};
+		}
 
-		conjugate: function () {
+		onBeforeRender() {}
 
-			this._x *= - 1;
-			this._y *= - 1;
-			this._z *= - 1;
+		onAfterRender() {}
 
-			this.onChangeCallback();
+		applyMatrix4(matrix) {
+			if (this.matrixAutoUpdate) this.updateMatrix();
+			this.matrix.premultiply(matrix);
+			this.matrix.decompose(this.position, this.quaternion, this.scale);
+		}
 
+		applyQuaternion(q) {
+			this.quaternion.premultiply(q);
 			return this;
+		}
 
-		},
+		setRotationFromAxisAngle(axis, angle) {
+			// assumes axis is normalized
+			this.quaternion.setFromAxisAngle(axis, angle);
+		}
+
+		setRotationFromEuler(euler) {
+			this.quaternion.setFromEuler(euler, true);
+		}
 
-		dot: function ( v ) {
+		setRotationFromMatrix(m) {
+			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+			this.quaternion.setFromRotationMatrix(m);
+		}
 
-			return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;
+		setRotationFromQuaternion(q) {
+			// assumes q is normalized
+			this.quaternion.copy(q);
+		}
 
-		},
+		rotateOnAxis(axis, angle) {
+			// rotate object on axis in object space
+			// axis is assumed to be normalized
+			_q1.setFromAxisAngle(axis, angle);
 
-		lengthSq: function () {
+			this.quaternion.multiply(_q1);
+			return this;
+		}
 
-			return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;
+		rotateOnWorldAxis(axis, angle) {
+			// rotate object on axis in world space
+			// axis is assumed to be normalized
+			// method assumes no rotated parent
+			_q1.setFromAxisAngle(axis, angle);
 
-		},
+			this.quaternion.premultiply(_q1);
+			return this;
+		}
 
-		length: function () {
+		rotateX(angle) {
+			return this.rotateOnAxis(_xAxis, angle);
+		}
 
-			return Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );
+		rotateY(angle) {
+			return this.rotateOnAxis(_yAxis, angle);
+		}
 
-		},
+		rotateZ(angle) {
+			return this.rotateOnAxis(_zAxis, angle);
+		}
 
-		normalize: function () {
+		translateOnAxis(axis, distance) {
+			// translate object by distance along axis in object space
+			// axis is assumed to be normalized
+			_v1$4.copy(axis).applyQuaternion(this.quaternion);
 
-			var l = this.length();
+			this.position.add(_v1$4.multiplyScalar(distance));
+			return this;
+		}
 
-			if ( l === 0 ) {
+		translateX(distance) {
+			return this.translateOnAxis(_xAxis, distance);
+		}
 
-				this._x = 0;
-				this._y = 0;
-				this._z = 0;
-				this._w = 1;
+		translateY(distance) {
+			return this.translateOnAxis(_yAxis, distance);
+		}
 
-			} else {
+		translateZ(distance) {
+			return this.translateOnAxis(_zAxis, distance);
+		}
 
-				l = 1 / l;
+		localToWorld(vector) {
+			return vector.applyMatrix4(this.matrixWorld);
+		}
 
-				this._x = this._x * l;
-				this._y = this._y * l;
-				this._z = this._z * l;
-				this._w = this._w * l;
+		worldToLocal(vector) {
+			return vector.applyMatrix4(_m1$1.copy(this.matrixWorld).invert());
+		}
 
+		lookAt(x, y, z) {
+			// This method does not support objects having non-uniformly-scaled parent(s)
+			if (x.isVector3) {
+				_target.copy(x);
+			} else {
+				_target.set(x, y, z);
 			}
 
-			this.onChangeCallback();
+			const parent = this.parent;
+			this.updateWorldMatrix(true, false);
 
-			return this;
+			_position$3.setFromMatrixPosition(this.matrixWorld);
 
-		},
+			if (this.isCamera || this.isLight) {
+				_m1$1.lookAt(_position$3, _target, this.up);
+			} else {
+				_m1$1.lookAt(_target, _position$3, this.up);
+			}
 
-		multiply: function ( q, p ) {
+			this.quaternion.setFromRotationMatrix(_m1$1);
 
-			if ( p !== undefined ) {
+			if (parent) {
+				_m1$1.extractRotation(parent.matrixWorld);
 
-				console.warn( 'THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.' );
-				return this.multiplyQuaternions( q, p );
+				_q1.setFromRotationMatrix(_m1$1);
 
+				this.quaternion.premultiply(_q1.invert());
 			}
+		}
 
-			return this.multiplyQuaternions( this, q );
+		add(object) {
+			if (arguments.length > 1) {
+				for (let i = 0; i < arguments.length; i++) {
+					this.add(arguments[i]);
+				}
 
-		},
+				return this;
+			}
 
-		premultiply: function ( q ) {
+			if (object === this) {
+				console.error('THREE.Object3D.add: object can\'t be added as a child of itself.', object);
+				return this;
+			}
 
-			return this.multiplyQuaternions( q, this );
+			if (object && object.isObject3D) {
+				if (object.parent !== null) {
+					object.parent.remove(object);
+				}
 
-		},
+				object.parent = this;
+				this.children.push(object);
+				object.dispatchEvent(_addedEvent);
+			} else {
+				console.error('THREE.Object3D.add: object not an instance of THREE.Object3D.', object);
+			}
 
-		multiplyQuaternions: function ( a, b ) {
+			return this;
+		}
 
-			// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm
+		remove(object) {
+			if (arguments.length > 1) {
+				for (let i = 0; i < arguments.length; i++) {
+					this.remove(arguments[i]);
+				}
 
-			var qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
-			var qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;
+				return this;
+			}
 
-			this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
-			this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
-			this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
-			this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;
+			const index = this.children.indexOf(object);
 
-			this.onChangeCallback();
+			if (index !== -1) {
+				object.parent = null;
+				this.children.splice(index, 1);
+				object.dispatchEvent(_removedEvent);
+			}
 
 			return this;
+		}
 
-		},
+		removeFromParent() {
+			const parent = this.parent;
 
-		slerp: function ( qb, t ) {
-
-			if ( t === 0 ) return this;
-			if ( t === 1 ) return this.copy( qb );
-
-			var x = this._x, y = this._y, z = this._z, w = this._w;
-
-			// http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/
+			if (parent !== null) {
+				parent.remove(this);
+			}
 
-			var cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;
+			return this;
+		}
 
-			if ( cosHalfTheta < 0 ) {
+		clear() {
+			for (let i = 0; i < this.children.length; i++) {
+				const object = this.children[i];
+				object.parent = null;
+				object.dispatchEvent(_removedEvent);
+			}
 
-				this._w = - qb._w;
-				this._x = - qb._x;
-				this._y = - qb._y;
-				this._z = - qb._z;
+			this.children.length = 0;
+			return this;
+		}
 
-				cosHalfTheta = - cosHalfTheta;
+		attach(object) {
+			// adds object as a child of this, while maintaining the object's world transform
+			this.updateWorldMatrix(true, false);
 
-			} else {
+			_m1$1.copy(this.matrixWorld).invert();
 
-				this.copy( qb );
+			if (object.parent !== null) {
+				object.parent.updateWorldMatrix(true, false);
 
+				_m1$1.multiply(object.parent.matrixWorld);
 			}
 
-			if ( cosHalfTheta >= 1.0 ) {
-
-				this._w = w;
-				this._x = x;
-				this._y = y;
-				this._z = z;
+			object.applyMatrix4(_m1$1);
+			this.add(object);
+			object.updateWorldMatrix(false, true);
+			return this;
+		}
 
-				return this;
+		getObjectById(id) {
+			return this.getObjectByProperty('id', id);
+		}
 
-			}
+		getObjectByName(name) {
+			return this.getObjectByProperty('name', name);
+		}
 
-			var sinHalfTheta = Math.sqrt( 1.0 - cosHalfTheta * cosHalfTheta );
+		getObjectByProperty(name, value) {
+			if (this[name] === value) return this;
 
-			if ( Math.abs( sinHalfTheta ) < 0.001 ) {
+			for (let i = 0, l = this.children.length; i < l; i++) {
+				const child = this.children[i];
+				const object = child.getObjectByProperty(name, value);
 
-				this._w = 0.5 * ( w + this._w );
-				this._x = 0.5 * ( x + this._x );
-				this._y = 0.5 * ( y + this._y );
-				this._z = 0.5 * ( z + this._z );
+				if (object !== undefined) {
+					return object;
+				}
+			}
 
-				return this;
+			return undefined;
+		}
 
-			}
+		getWorldPosition(target) {
+			this.updateWorldMatrix(true, false);
+			return target.setFromMatrixPosition(this.matrixWorld);
+		}
 
-			var halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );
-			var ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
-				ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;
+		getWorldQuaternion(target) {
+			this.updateWorldMatrix(true, false);
+			this.matrixWorld.decompose(_position$3, target, _scale$2);
+			return target;
+		}
 
-			this._w = ( w * ratioA + this._w * ratioB );
-			this._x = ( x * ratioA + this._x * ratioB );
-			this._y = ( y * ratioA + this._y * ratioB );
-			this._z = ( z * ratioA + this._z * ratioB );
+		getWorldScale(target) {
+			this.updateWorldMatrix(true, false);
+			this.matrixWorld.decompose(_position$3, _quaternion$2, target);
+			return target;
+		}
 
-			this.onChangeCallback();
+		getWorldDirection(target) {
+			this.updateWorldMatrix(true, false);
+			const e = this.matrixWorld.elements;
+			return target.set(e[8], e[9], e[10]).normalize();
+		}
 
-			return this;
+		raycast() {}
 
-		},
+		traverse(callback) {
+			callback(this);
+			const children = this.children;
 
-		equals: function ( quaternion ) {
+			for (let i = 0, l = children.length; i < l; i++) {
+				children[i].traverse(callback);
+			}
+		}
 
-			return ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );
+		traverseVisible(callback) {
+			if (this.visible === false) return;
+			callback(this);
+			const children = this.children;
 
-		},
+			for (let i = 0, l = children.length; i < l; i++) {
+				children[i].traverseVisible(callback);
+			}
+		}
 
-		fromArray: function ( array, offset ) {
+		traverseAncestors(callback) {
+			const parent = this.parent;
 
-			if ( offset === undefined ) offset = 0;
+			if (parent !== null) {
+				callback(parent);
+				parent.traverseAncestors(callback);
+			}
+		}
 
-			this._x = array[ offset ];
-			this._y = array[ offset + 1 ];
-			this._z = array[ offset + 2 ];
-			this._w = array[ offset + 3 ];
+		updateMatrix() {
+			this.matrix.compose(this.position, this.quaternion, this.scale);
+			this.matrixWorldNeedsUpdate = true;
+		}
 
-			this.onChangeCallback();
+		updateMatrixWorld(force) {
+			if (this.matrixAutoUpdate) this.updateMatrix();
 
-			return this;
+			if (this.matrixWorldNeedsUpdate || force) {
+				if (this.parent === null) {
+					this.matrixWorld.copy(this.matrix);
+				} else {
+					this.matrixWorld.multiplyMatrices(this.parent.matrixWorld, this.matrix);
+				}
 
-		},
+				this.matrixWorldNeedsUpdate = false;
+				force = true;
+			} // update children
 
-		toArray: function ( array, offset ) {
 
-			if ( array === undefined ) array = [];
-			if ( offset === undefined ) offset = 0;
+			const children = this.children;
 
-			array[ offset ] = this._x;
-			array[ offset + 1 ] = this._y;
-			array[ offset + 2 ] = this._z;
-			array[ offset + 3 ] = this._w;
+			for (let i = 0, l = children.length; i < l; i++) {
+				children[i].updateMatrixWorld(force);
+			}
+		}
 
-			return array;
+		updateWorldMatrix(updateParents, updateChildren) {
+			const parent = this.parent;
 
-		},
+			if (updateParents === true && parent !== null) {
+				parent.updateWorldMatrix(true, false);
+			}
 
-		onChange: function ( callback ) {
+			if (this.matrixAutoUpdate) this.updateMatrix();
 
-			this.onChangeCallback = callback;
+			if (this.parent === null) {
+				this.matrixWorld.copy(this.matrix);
+			} else {
+				this.matrixWorld.multiplyMatrices(this.parent.matrixWorld, this.matrix);
+			} // update children
 
-			return this;
 
-		},
+			if (updateChildren === true) {
+				const children = this.children;
 
-		onChangeCallback: function () {}
+				for (let i = 0, l = children.length; i < l; i++) {
+					children[i].updateWorldMatrix(false, true);
+				}
+			}
+		}
 
-	} );
+		toJSON(meta) {
+			// meta is a string when called from JSON.stringify
+			const isRootObject = meta === undefined || typeof meta === 'string';
+			const output = {}; // meta is a hash used to collect geometries, materials.
+			// not providing it implies that this is the root object
+			// being serialized.
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author kile / http://kile.stravaganza.org/
-	 * @author philogb / http://blog.thejit.org/
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author egraether / http://egraether.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
+			if (isRootObject) {
+				// initialize meta obj
+				meta = {
+					geometries: {},
+					materials: {},
+					textures: {},
+					images: {},
+					shapes: {},
+					skeletons: {},
+					animations: {}
+				};
+				output.metadata = {
+					version: 4.5,
+					type: 'Object',
+					generator: 'Object3D.toJSON'
+				};
+			} // standard Object3D serialization
 
-	function Vector3( x, y, z ) {
 
-		this.x = x || 0;
-		this.y = y || 0;
-		this.z = z || 0;
+			const object = {};
+			object.uuid = this.uuid;
+			object.type = this.type;
+			if (this.name !== '') object.name = this.name;
+			if (this.castShadow === true) object.castShadow = true;
+			if (this.receiveShadow === true) object.receiveShadow = true;
+			if (this.visible === false) object.visible = false;
+			if (this.frustumCulled === false) object.frustumCulled = false;
+			if (this.renderOrder !== 0) object.renderOrder = this.renderOrder;
+			if (JSON.stringify(this.userData) !== '{}') object.userData = this.userData;
+			object.layers = this.layers.mask;
+			object.matrix = this.matrix.toArray();
+			if (this.matrixAutoUpdate === false) object.matrixAutoUpdate = false; // object specific properties
 
-	}
+			if (this.isInstancedMesh) {
+				object.type = 'InstancedMesh';
+				object.count = this.count;
+				object.instanceMatrix = this.instanceMatrix.toJSON();
+				if (this.instanceColor !== null) object.instanceColor = this.instanceColor.toJSON();
+			} //
 
-	Object.assign( Vector3.prototype, {
 
-		isVector3: true,
+			function serialize(library, element) {
+				if (library[element.uuid] === undefined) {
+					library[element.uuid] = element.toJSON(meta);
+				}
 
-		set: function ( x, y, z ) {
+				return element.uuid;
+			}
 
-			this.x = x;
-			this.y = y;
-			this.z = z;
+			if (this.isScene) {
+				if (this.background) {
+					if (this.background.isColor) {
+						object.background = this.background.toJSON();
+					} else if (this.background.isTexture) {
+						object.background = this.background.toJSON(meta).uuid;
+					}
+				}
 
-			return this;
+				if (this.environment && this.environment.isTexture) {
+					object.environment = this.environment.toJSON(meta).uuid;
+				}
+			} else if (this.isMesh || this.isLine || this.isPoints) {
+				object.geometry = serialize(meta.geometries, this.geometry);
+				const parameters = this.geometry.parameters;
 
-		},
+				if (parameters !== undefined && parameters.shapes !== undefined) {
+					const shapes = parameters.shapes;
 
-		setScalar: function ( scalar ) {
+					if (Array.isArray(shapes)) {
+						for (let i = 0, l = shapes.length; i < l; i++) {
+							const shape = shapes[i];
+							serialize(meta.shapes, shape);
+						}
+					} else {
+						serialize(meta.shapes, shapes);
+					}
+				}
+			}
 
-			this.x = scalar;
-			this.y = scalar;
-			this.z = scalar;
+			if (this.isSkinnedMesh) {
+				object.bindMode = this.bindMode;
+				object.bindMatrix = this.bindMatrix.toArray();
 
-			return this;
+				if (this.skeleton !== undefined) {
+					serialize(meta.skeletons, this.skeleton);
+					object.skeleton = this.skeleton.uuid;
+				}
+			}
 
-		},
+			if (this.material !== undefined) {
+				if (Array.isArray(this.material)) {
+					const uuids = [];
 
-		setX: function ( x ) {
+					for (let i = 0, l = this.material.length; i < l; i++) {
+						uuids.push(serialize(meta.materials, this.material[i]));
+					}
 
-			this.x = x;
+					object.material = uuids;
+				} else {
+					object.material = serialize(meta.materials, this.material);
+				}
+			} //
 
-			return this;
 
-		},
+			if (this.children.length > 0) {
+				object.children = [];
 
-		setY: function ( y ) {
+				for (let i = 0; i < this.children.length; i++) {
+					object.children.push(this.children[i].toJSON(meta).object);
+				}
+			} //
 
-			this.y = y;
 
-			return this;
+			if (this.animations.length > 0) {
+				object.animations = [];
 
-		},
+				for (let i = 0; i < this.animations.length; i++) {
+					const animation = this.animations[i];
+					object.animations.push(serialize(meta.animations, animation));
+				}
+			}
 
-		setZ: function ( z ) {
+			if (isRootObject) {
+				const geometries = extractFromCache(meta.geometries);
+				const materials = extractFromCache(meta.materials);
+				const textures = extractFromCache(meta.textures);
+				const images = extractFromCache(meta.images);
+				const shapes = extractFromCache(meta.shapes);
+				const skeletons = extractFromCache(meta.skeletons);
+				const animations = extractFromCache(meta.animations);
+				if (geometries.length > 0) output.geometries = geometries;
+				if (materials.length > 0) output.materials = materials;
+				if (textures.length > 0) output.textures = textures;
+				if (images.length > 0) output.images = images;
+				if (shapes.length > 0) output.shapes = shapes;
+				if (skeletons.length > 0) output.skeletons = skeletons;
+				if (animations.length > 0) output.animations = animations;
+			}
 
-			this.z = z;
+			output.object = object;
+			return output; // extract data from the cache hash
+			// remove metadata on each item
+			// and return as array
 
-			return this;
+			function extractFromCache(cache) {
+				const values = [];
 
-		},
+				for (const key in cache) {
+					const data = cache[key];
+					delete data.metadata;
+					values.push(data);
+				}
 
-		setComponent: function ( index, value ) {
+				return values;
+			}
+		}
 
-			switch ( index ) {
+		clone(recursive) {
+			return new this.constructor().copy(this, recursive);
+		}
 
-				case 0: this.x = value; break;
-				case 1: this.y = value; break;
-				case 2: this.z = value; break;
-				default: throw new Error( 'index is out of range: ' + index );
+		copy(source, recursive = true) {
+			this.name = source.name;
+			this.up.copy(source.up);
+			this.position.copy(source.position);
+			this.rotation.order = source.rotation.order;
+			this.quaternion.copy(source.quaternion);
+			this.scale.copy(source.scale);
+			this.matrix.copy(source.matrix);
+			this.matrixWorld.copy(source.matrixWorld);
+			this.matrixAutoUpdate = source.matrixAutoUpdate;
+			this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
+			this.layers.mask = source.layers.mask;
+			this.visible = source.visible;
+			this.castShadow = source.castShadow;
+			this.receiveShadow = source.receiveShadow;
+			this.frustumCulled = source.frustumCulled;
+			this.renderOrder = source.renderOrder;
+			this.userData = JSON.parse(JSON.stringify(source.userData));
 
+			if (recursive === true) {
+				for (let i = 0; i < source.children.length; i++) {
+					const child = source.children[i];
+					this.add(child.clone());
+				}
 			}
 
 			return this;
+		}
 
-		},
+	}
 
-		getComponent: function ( index ) {
+	Object3D.DefaultUp = new Vector3(0, 1, 0);
+	Object3D.DefaultMatrixAutoUpdate = true;
+	Object3D.prototype.isObject3D = true;
 
-			switch ( index ) {
+	const _v0$1 = /*@__PURE__*/new Vector3();
 
-				case 0: return this.x;
-				case 1: return this.y;
-				case 2: return this.z;
-				default: throw new Error( 'index is out of range: ' + index );
+	const _v1$3 = /*@__PURE__*/new Vector3();
 
-			}
+	const _v2$2 = /*@__PURE__*/new Vector3();
 
-		},
+	const _v3$1 = /*@__PURE__*/new Vector3();
 
-		clone: function () {
+	const _vab = /*@__PURE__*/new Vector3();
 
-			return new this.constructor( this.x, this.y, this.z );
+	const _vac = /*@__PURE__*/new Vector3();
 
-		},
+	const _vbc = /*@__PURE__*/new Vector3();
 
-		copy: function ( v ) {
+	const _vap = /*@__PURE__*/new Vector3();
 
-			this.x = v.x;
-			this.y = v.y;
-			this.z = v.z;
+	const _vbp = /*@__PURE__*/new Vector3();
 
-			return this;
+	const _vcp = /*@__PURE__*/new Vector3();
 
-		},
+	class Triangle {
+		constructor(a = new Vector3(), b = new Vector3(), c = new Vector3()) {
+			this.a = a;
+			this.b = b;
+			this.c = c;
+		}
 
-		add: function ( v, w ) {
+		static getNormal(a, b, c, target) {
+			target.subVectors(c, b);
 
-			if ( w !== undefined ) {
+			_v0$1.subVectors(a, b);
 
-				console.warn( 'THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
-				return this.addVectors( v, w );
+			target.cross(_v0$1);
+			const targetLengthSq = target.lengthSq();
 
+			if (targetLengthSq > 0) {
+				return target.multiplyScalar(1 / Math.sqrt(targetLengthSq));
 			}
 
-			this.x += v.x;
-			this.y += v.y;
-			this.z += v.z;
+			return target.set(0, 0, 0);
+		} // static/instance method to calculate barycentric coordinates
+		// based on: http://www.blackpawn.com/texts/pointinpoly/default.html
 
-			return this;
 
-		},
+		static getBarycoord(point, a, b, c, target) {
+			_v0$1.subVectors(c, a);
 
-		addScalar: function ( s ) {
+			_v1$3.subVectors(b, a);
 
-			this.x += s;
-			this.y += s;
-			this.z += s;
+			_v2$2.subVectors(point, a);
 
-			return this;
+			const dot00 = _v0$1.dot(_v0$1);
 
-		},
+			const dot01 = _v0$1.dot(_v1$3);
 
-		addVectors: function ( a, b ) {
+			const dot02 = _v0$1.dot(_v2$2);
 
-			this.x = a.x + b.x;
-			this.y = a.y + b.y;
-			this.z = a.z + b.z;
+			const dot11 = _v1$3.dot(_v1$3);
 
-			return this;
+			const dot12 = _v1$3.dot(_v2$2);
 
-		},
+			const denom = dot00 * dot11 - dot01 * dot01; // collinear or singular triangle
 
-		addScaledVector: function ( v, s ) {
+			if (denom === 0) {
+				// arbitrary location outside of triangle?
+				// not sure if this is the best idea, maybe should be returning undefined
+				return target.set(-2, -1, -1);
+			}
 
-			this.x += v.x * s;
-			this.y += v.y * s;
-			this.z += v.z * s;
+			const invDenom = 1 / denom;
+			const u = (dot11 * dot02 - dot01 * dot12) * invDenom;
+			const v = (dot00 * dot12 - dot01 * dot02) * invDenom; // barycentric coordinates must always sum to 1
 
-			return this;
+			return target.set(1 - u - v, v, u);
+		}
 
-		},
+		static containsPoint(point, a, b, c) {
+			this.getBarycoord(point, a, b, c, _v3$1);
+			return _v3$1.x >= 0 && _v3$1.y >= 0 && _v3$1.x + _v3$1.y <= 1;
+		}
 
-		sub: function ( v, w ) {
+		static getUV(point, p1, p2, p3, uv1, uv2, uv3, target) {
+			this.getBarycoord(point, p1, p2, p3, _v3$1);
+			target.set(0, 0);
+			target.addScaledVector(uv1, _v3$1.x);
+			target.addScaledVector(uv2, _v3$1.y);
+			target.addScaledVector(uv3, _v3$1.z);
+			return target;
+		}
 
-			if ( w !== undefined ) {
+		static isFrontFacing(a, b, c, direction) {
+			_v0$1.subVectors(c, b);
 
-				console.warn( 'THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
-				return this.subVectors( v, w );
+			_v1$3.subVectors(a, b); // strictly front facing
 
-			}
 
-			this.x -= v.x;
-			this.y -= v.y;
-			this.z -= v.z;
+			return _v0$1.cross(_v1$3).dot(direction) < 0 ? true : false;
+		}
 
+		set(a, b, c) {
+			this.a.copy(a);
+			this.b.copy(b);
+			this.c.copy(c);
 			return this;
+		}
 
-		},
-
-		subScalar: function ( s ) {
-
-			this.x -= s;
-			this.y -= s;
-			this.z -= s;
-
+		setFromPointsAndIndices(points, i0, i1, i2) {
+			this.a.copy(points[i0]);
+			this.b.copy(points[i1]);
+			this.c.copy(points[i2]);
 			return this;
+		}
 
-		},
-
-		subVectors: function ( a, b ) {
-
-			this.x = a.x - b.x;
-			this.y = a.y - b.y;
-			this.z = a.z - b.z;
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
+		copy(triangle) {
+			this.a.copy(triangle.a);
+			this.b.copy(triangle.b);
+			this.c.copy(triangle.c);
 			return this;
+		}
 
-		},
+		getArea() {
+			_v0$1.subVectors(this.c, this.b);
 
-		multiply: function ( v, w ) {
+			_v1$3.subVectors(this.a, this.b);
 
-			if ( w !== undefined ) {
+			return _v0$1.cross(_v1$3).length() * 0.5;
+		}
 
-				console.warn( 'THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.' );
-				return this.multiplyVectors( v, w );
+		getMidpoint(target) {
+			return target.addVectors(this.a, this.b).add(this.c).multiplyScalar(1 / 3);
+		}
 
-			}
+		getNormal(target) {
+			return Triangle.getNormal(this.a, this.b, this.c, target);
+		}
 
-			this.x *= v.x;
-			this.y *= v.y;
-			this.z *= v.z;
+		getPlane(target) {
+			return target.setFromCoplanarPoints(this.a, this.b, this.c);
+		}
 
-			return this;
+		getBarycoord(point, target) {
+			return Triangle.getBarycoord(point, this.a, this.b, this.c, target);
+		}
 
-		},
+		getUV(point, uv1, uv2, uv3, target) {
+			return Triangle.getUV(point, this.a, this.b, this.c, uv1, uv2, uv3, target);
+		}
 
-		multiplyScalar: function ( scalar ) {
+		containsPoint(point) {
+			return Triangle.containsPoint(point, this.a, this.b, this.c);
+		}
 
-			this.x *= scalar;
-			this.y *= scalar;
-			this.z *= scalar;
+		isFrontFacing(direction) {
+			return Triangle.isFrontFacing(this.a, this.b, this.c, direction);
+		}
 
-			return this;
+		intersectsBox(box) {
+			return box.intersectsTriangle(this);
+		}
 
-		},
+		closestPointToPoint(p, target) {
+			const a = this.a,
+						b = this.b,
+						c = this.c;
+			let v, w; // algorithm thanks to Real-Time Collision Detection by Christer Ericson,
+			// published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,
+			// under the accompanying license; see chapter 5.1.5 for detailed explanation.
+			// basically, we're distinguishing which of the voronoi regions of the triangle
+			// the point lies in with the minimum amount of redundant computation.
 
-		multiplyVectors: function ( a, b ) {
+			_vab.subVectors(b, a);
 
-			this.x = a.x * b.x;
-			this.y = a.y * b.y;
-			this.z = a.z * b.z;
+			_vac.subVectors(c, a);
 
-			return this;
+			_vap.subVectors(p, a);
 
-		},
+			const d1 = _vab.dot(_vap);
 
-		applyEuler: function () {
+			const d2 = _vac.dot(_vap);
 
-			var quaternion = new Quaternion();
+			if (d1 <= 0 && d2 <= 0) {
+				// vertex region of A; barycentric coords (1, 0, 0)
+				return target.copy(a);
+			}
 
-			return function applyEuler( euler ) {
+			_vbp.subVectors(p, b);
 
-				if ( ! ( euler && euler.isEuler ) ) {
+			const d3 = _vab.dot(_vbp);
 
-					console.error( 'THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.' );
+			const d4 = _vac.dot(_vbp);
 
-				}
+			if (d3 >= 0 && d4 <= d3) {
+				// vertex region of B; barycentric coords (0, 1, 0)
+				return target.copy(b);
+			}
 
-				return this.applyQuaternion( quaternion.setFromEuler( euler ) );
+			const vc = d1 * d4 - d3 * d2;
 
-			};
+			if (vc <= 0 && d1 >= 0 && d3 <= 0) {
+				v = d1 / (d1 - d3); // edge region of AB; barycentric coords (1-v, v, 0)
 
-		}(),
+				return target.copy(a).addScaledVector(_vab, v);
+			}
 
-		applyAxisAngle: function () {
+			_vcp.subVectors(p, c);
 
-			var quaternion = new Quaternion();
+			const d5 = _vab.dot(_vcp);
 
-			return function applyAxisAngle( axis, angle ) {
+			const d6 = _vac.dot(_vcp);
 
-				return this.applyQuaternion( quaternion.setFromAxisAngle( axis, angle ) );
+			if (d6 >= 0 && d5 <= d6) {
+				// vertex region of C; barycentric coords (0, 0, 1)
+				return target.copy(c);
+			}
 
-			};
+			const vb = d5 * d2 - d1 * d6;
 
-		}(),
+			if (vb <= 0 && d2 >= 0 && d6 <= 0) {
+				w = d2 / (d2 - d6); // edge region of AC; barycentric coords (1-w, 0, w)
 
-		applyMatrix3: function ( m ) {
+				return target.copy(a).addScaledVector(_vac, w);
+			}
 
-			var x = this.x, y = this.y, z = this.z;
-			var e = m.elements;
+			const va = d3 * d6 - d5 * d4;
 
-			this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;
-			this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;
-			this.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;
+			if (va <= 0 && d4 - d3 >= 0 && d5 - d6 >= 0) {
+				_vbc.subVectors(c, b);
 
-			return this;
+				w = (d4 - d3) / (d4 - d3 + (d5 - d6)); // edge region of BC; barycentric coords (0, 1-w, w)
 
-		},
+				return target.copy(b).addScaledVector(_vbc, w); // edge region of BC
+			} // face region
 
-		applyMatrix4: function ( m ) {
 
-			var x = this.x, y = this.y, z = this.z;
-			var e = m.elements;
+			const denom = 1 / (va + vb + vc); // u = va * denom
 
-			var w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );
+			v = vb * denom;
+			w = vc * denom;
+			return target.copy(a).addScaledVector(_vab, v).addScaledVector(_vac, w);
+		}
 
-			this.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;
-			this.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;
-			this.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;
+		equals(triangle) {
+			return triangle.a.equals(this.a) && triangle.b.equals(this.b) && triangle.c.equals(this.c);
+		}
 
-			return this;
+	}
 
-		},
+	let materialId = 0;
 
-		applyQuaternion: function ( q ) {
+	class Material extends EventDispatcher {
+		constructor() {
+			super();
+			Object.defineProperty(this, 'id', {
+				value: materialId++
+			});
+			this.uuid = generateUUID();
+			this.name = '';
+			this.type = 'Material';
+			this.fog = true;
+			this.blending = NormalBlending;
+			this.side = FrontSide;
+			this.vertexColors = false;
+			this.opacity = 1;
+			this.transparent = false;
+			this.blendSrc = SrcAlphaFactor;
+			this.blendDst = OneMinusSrcAlphaFactor;
+			this.blendEquation = AddEquation;
+			this.blendSrcAlpha = null;
+			this.blendDstAlpha = null;
+			this.blendEquationAlpha = null;
+			this.depthFunc = LessEqualDepth;
+			this.depthTest = true;
+			this.depthWrite = true;
+			this.stencilWriteMask = 0xff;
+			this.stencilFunc = AlwaysStencilFunc;
+			this.stencilRef = 0;
+			this.stencilFuncMask = 0xff;
+			this.stencilFail = KeepStencilOp;
+			this.stencilZFail = KeepStencilOp;
+			this.stencilZPass = KeepStencilOp;
+			this.stencilWrite = false;
+			this.clippingPlanes = null;
+			this.clipIntersection = false;
+			this.clipShadows = false;
+			this.shadowSide = null;
+			this.colorWrite = true;
+			this.precision = null; // override the renderer's default precision for this material
 
-			var x = this.x, y = this.y, z = this.z;
-			var qx = q.x, qy = q.y, qz = q.z, qw = q.w;
+			this.polygonOffset = false;
+			this.polygonOffsetFactor = 0;
+			this.polygonOffsetUnits = 0;
+			this.dithering = false;
+			this.alphaTest = 0;
+			this.alphaToCoverage = false;
+			this.premultipliedAlpha = false;
+			this.visible = true;
+			this.toneMapped = true;
+			this.userData = {};
+			this.version = 0;
+		}
 
-			// calculate quat * vector
+		onBuild()
+		/* shaderobject, renderer */
+		{}
 
-			var ix = qw * x + qy * z - qz * y;
-			var iy = qw * y + qz * x - qx * z;
-			var iz = qw * z + qx * y - qy * x;
-			var iw = - qx * x - qy * y - qz * z;
+		onBeforeCompile()
+		/* shaderobject, renderer */
+		{}
 
-			// calculate result * inverse quat
+		customProgramCacheKey() {
+			return this.onBeforeCompile.toString();
+		}
 
-			this.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;
-			this.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;
-			this.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;
+		setValues(values) {
+			if (values === undefined) return;
 
-			return this;
+			for (const key in values) {
+				const newValue = values[key];
 
-		},
+				if (newValue === undefined) {
+					console.warn('THREE.Material: \'' + key + '\' parameter is undefined.');
+					continue;
+				} // for backward compatability if shading is set in the constructor
 
-		project: function () {
 
-			var matrix = new Matrix4();
+				if (key === 'shading') {
+					console.warn('THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.');
+					this.flatShading = newValue === FlatShading ? true : false;
+					continue;
+				}
 
-			return function project( camera ) {
+				const currentValue = this[key];
 
-				matrix.multiplyMatrices( camera.projectionMatrix, matrix.getInverse( camera.matrixWorld ) );
-				return this.applyMatrix4( matrix );
+				if (currentValue === undefined) {
+					console.warn('THREE.' + this.type + ': \'' + key + '\' is not a property of this material.');
+					continue;
+				}
 
-			};
+				if (currentValue && currentValue.isColor) {
+					currentValue.set(newValue);
+				} else if (currentValue && currentValue.isVector3 && newValue && newValue.isVector3) {
+					currentValue.copy(newValue);
+				} else {
+					this[key] = newValue;
+				}
+			}
+		}
 
-		}(),
+		toJSON(meta) {
+			const isRoot = meta === undefined || typeof meta === 'string';
 
-		unproject: function () {
+			if (isRoot) {
+				meta = {
+					textures: {},
+					images: {}
+				};
+			}
 
-			var matrix = new Matrix4();
+			const data = {
+				metadata: {
+					version: 4.5,
+					type: 'Material',
+					generator: 'Material.toJSON'
+				}
+			}; // standard Material serialization
 
-			return function unproject( camera ) {
+			data.uuid = this.uuid;
+			data.type = this.type;
+			if (this.name !== '') data.name = this.name;
+			if (this.color && this.color.isColor) data.color = this.color.getHex();
+			if (this.roughness !== undefined) data.roughness = this.roughness;
+			if (this.metalness !== undefined) data.metalness = this.metalness;
+			if (this.sheen && this.sheen.isColor) data.sheen = this.sheen.getHex();
+			if (this.emissive && this.emissive.isColor) data.emissive = this.emissive.getHex();
+			if (this.emissiveIntensity && this.emissiveIntensity !== 1) data.emissiveIntensity = this.emissiveIntensity;
+			if (this.specular && this.specular.isColor) data.specular = this.specular.getHex();
+			if (this.shininess !== undefined) data.shininess = this.shininess;
+			if (this.clearcoat !== undefined) data.clearcoat = this.clearcoat;
+			if (this.clearcoatRoughness !== undefined) data.clearcoatRoughness = this.clearcoatRoughness;
 
-				matrix.multiplyMatrices( camera.matrixWorld, matrix.getInverse( camera.projectionMatrix ) );
-				return this.applyMatrix4( matrix );
+			if (this.clearcoatMap && this.clearcoatMap.isTexture) {
+				data.clearcoatMap = this.clearcoatMap.toJSON(meta).uuid;
+			}
 
-			};
+			if (this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture) {
+				data.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON(meta).uuid;
+			}
 
-		}(),
+			if (this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture) {
+				data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON(meta).uuid;
+				data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();
+			}
 
-		transformDirection: function ( m ) {
+			if (this.map && this.map.isTexture) data.map = this.map.toJSON(meta).uuid;
+			if (this.matcap && this.matcap.isTexture) data.matcap = this.matcap.toJSON(meta).uuid;
+			if (this.alphaMap && this.alphaMap.isTexture) data.alphaMap = this.alphaMap.toJSON(meta).uuid;
 
-			// input: THREE.Matrix4 affine matrix
-			// vector interpreted as a direction
+			if (this.lightMap && this.lightMap.isTexture) {
+				data.lightMap = this.lightMap.toJSON(meta).uuid;
+				data.lightMapIntensity = this.lightMapIntensity;
+			}
 
-			var x = this.x, y = this.y, z = this.z;
-			var e = m.elements;
+			if (this.aoMap && this.aoMap.isTexture) {
+				data.aoMap = this.aoMap.toJSON(meta).uuid;
+				data.aoMapIntensity = this.aoMapIntensity;
+			}
 
-			this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;
-			this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;
-			this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;
+			if (this.bumpMap && this.bumpMap.isTexture) {
+				data.bumpMap = this.bumpMap.toJSON(meta).uuid;
+				data.bumpScale = this.bumpScale;
+			}
 
-			return this.normalize();
+			if (this.normalMap && this.normalMap.isTexture) {
+				data.normalMap = this.normalMap.toJSON(meta).uuid;
+				data.normalMapType = this.normalMapType;
+				data.normalScale = this.normalScale.toArray();
+			}
 
-		},
+			if (this.displacementMap && this.displacementMap.isTexture) {
+				data.displacementMap = this.displacementMap.toJSON(meta).uuid;
+				data.displacementScale = this.displacementScale;
+				data.displacementBias = this.displacementBias;
+			}
 
-		divide: function ( v ) {
+			if (this.roughnessMap && this.roughnessMap.isTexture) data.roughnessMap = this.roughnessMap.toJSON(meta).uuid;
+			if (this.metalnessMap && this.metalnessMap.isTexture) data.metalnessMap = this.metalnessMap.toJSON(meta).uuid;
+			if (this.emissiveMap && this.emissiveMap.isTexture) data.emissiveMap = this.emissiveMap.toJSON(meta).uuid;
+			if (this.specularMap && this.specularMap.isTexture) data.specularMap = this.specularMap.toJSON(meta).uuid;
 
-			this.x /= v.x;
-			this.y /= v.y;
-			this.z /= v.z;
+			if (this.envMap && this.envMap.isTexture) {
+				data.envMap = this.envMap.toJSON(meta).uuid;
+				if (this.combine !== undefined) data.combine = this.combine;
+			}
 
-			return this;
+			if (this.envMapIntensity !== undefined) data.envMapIntensity = this.envMapIntensity;
+			if (this.reflectivity !== undefined) data.reflectivity = this.reflectivity;
+			if (this.refractionRatio !== undefined) data.refractionRatio = this.refractionRatio;
 
-		},
+			if (this.gradientMap && this.gradientMap.isTexture) {
+				data.gradientMap = this.gradientMap.toJSON(meta).uuid;
+			}
 
-		divideScalar: function ( scalar ) {
+			if (this.transmission !== undefined) data.transmission = this.transmission;
+			if (this.transmissionMap && this.transmissionMap.isTexture) data.transmissionMap = this.transmissionMap.toJSON(meta).uuid;
+			if (this.thickness !== undefined) data.thickness = this.thickness;
+			if (this.thicknessMap && this.thicknessMap.isTexture) data.thicknessMap = this.thicknessMap.toJSON(meta).uuid;
+			if (this.attenuationDistance !== undefined) data.attenuationDistance = this.attenuationDistance;
+			if (this.attenuationColor !== undefined) data.attenuationColor = this.attenuationColor.getHex();
+			if (this.size !== undefined) data.size = this.size;
+			if (this.shadowSide !== null) data.shadowSide = this.shadowSide;
+			if (this.sizeAttenuation !== undefined) data.sizeAttenuation = this.sizeAttenuation;
+			if (this.blending !== NormalBlending) data.blending = this.blending;
+			if (this.side !== FrontSide) data.side = this.side;
+			if (this.vertexColors) data.vertexColors = true;
+			if (this.opacity < 1) data.opacity = this.opacity;
+			if (this.transparent === true) data.transparent = this.transparent;
+			data.depthFunc = this.depthFunc;
+			data.depthTest = this.depthTest;
+			data.depthWrite = this.depthWrite;
+			data.colorWrite = this.colorWrite;
+			data.stencilWrite = this.stencilWrite;
+			data.stencilWriteMask = this.stencilWriteMask;
+			data.stencilFunc = this.stencilFunc;
+			data.stencilRef = this.stencilRef;
+			data.stencilFuncMask = this.stencilFuncMask;
+			data.stencilFail = this.stencilFail;
+			data.stencilZFail = this.stencilZFail;
+			data.stencilZPass = this.stencilZPass; // rotation (SpriteMaterial)
+
+			if (this.rotation && this.rotation !== 0) data.rotation = this.rotation;
+			if (this.polygonOffset === true) data.polygonOffset = true;
+			if (this.polygonOffsetFactor !== 0) data.polygonOffsetFactor = this.polygonOffsetFactor;
+			if (this.polygonOffsetUnits !== 0) data.polygonOffsetUnits = this.polygonOffsetUnits;
+			if (this.linewidth && this.linewidth !== 1) data.linewidth = this.linewidth;
+			if (this.dashSize !== undefined) data.dashSize = this.dashSize;
+			if (this.gapSize !== undefined) data.gapSize = this.gapSize;
+			if (this.scale !== undefined) data.scale = this.scale;
+			if (this.dithering === true) data.dithering = true;
+			if (this.alphaTest > 0) data.alphaTest = this.alphaTest;
+			if (this.alphaToCoverage === true) data.alphaToCoverage = this.alphaToCoverage;
+			if (this.premultipliedAlpha === true) data.premultipliedAlpha = this.premultipliedAlpha;
+			if (this.wireframe === true) data.wireframe = this.wireframe;
+			if (this.wireframeLinewidth > 1) data.wireframeLinewidth = this.wireframeLinewidth;
+			if (this.wireframeLinecap !== 'round') data.wireframeLinecap = this.wireframeLinecap;
+			if (this.wireframeLinejoin !== 'round') data.wireframeLinejoin = this.wireframeLinejoin;
+			if (this.morphTargets === true) data.morphTargets = true;
+			if (this.morphNormals === true) data.morphNormals = true;
+			if (this.flatShading === true) data.flatShading = this.flatShading;
+			if (this.visible === false) data.visible = false;
+			if (this.toneMapped === false) data.toneMapped = false;
+			if (JSON.stringify(this.userData) !== '{}') data.userData = this.userData; // TODO: Copied from Object3D.toJSON
+
+			function extractFromCache(cache) {
+				const values = [];
+
+				for (const key in cache) {
+					const data = cache[key];
+					delete data.metadata;
+					values.push(data);
+				}
 
-			return this.multiplyScalar( 1 / scalar );
+				return values;
+			}
 
-		},
+			if (isRoot) {
+				const textures = extractFromCache(meta.textures);
+				const images = extractFromCache(meta.images);
+				if (textures.length > 0) data.textures = textures;
+				if (images.length > 0) data.images = images;
+			}
 
-		min: function ( v ) {
+			return data;
+		}
 
-			this.x = Math.min( this.x, v.x );
-			this.y = Math.min( this.y, v.y );
-			this.z = Math.min( this.z, v.z );
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-			return this;
+		copy(source) {
+			this.name = source.name;
+			this.fog = source.fog;
+			this.blending = source.blending;
+			this.side = source.side;
+			this.vertexColors = source.vertexColors;
+			this.opacity = source.opacity;
+			this.transparent = source.transparent;
+			this.blendSrc = source.blendSrc;
+			this.blendDst = source.blendDst;
+			this.blendEquation = source.blendEquation;
+			this.blendSrcAlpha = source.blendSrcAlpha;
+			this.blendDstAlpha = source.blendDstAlpha;
+			this.blendEquationAlpha = source.blendEquationAlpha;
+			this.depthFunc = source.depthFunc;
+			this.depthTest = source.depthTest;
+			this.depthWrite = source.depthWrite;
+			this.stencilWriteMask = source.stencilWriteMask;
+			this.stencilFunc = source.stencilFunc;
+			this.stencilRef = source.stencilRef;
+			this.stencilFuncMask = source.stencilFuncMask;
+			this.stencilFail = source.stencilFail;
+			this.stencilZFail = source.stencilZFail;
+			this.stencilZPass = source.stencilZPass;
+			this.stencilWrite = source.stencilWrite;
+			const srcPlanes = source.clippingPlanes;
+			let dstPlanes = null;
 
-		},
+			if (srcPlanes !== null) {
+				const n = srcPlanes.length;
+				dstPlanes = new Array(n);
 
-		max: function ( v ) {
+				for (let i = 0; i !== n; ++i) {
+					dstPlanes[i] = srcPlanes[i].clone();
+				}
+			}
 
-			this.x = Math.max( this.x, v.x );
-			this.y = Math.max( this.y, v.y );
-			this.z = Math.max( this.z, v.z );
+			this.clippingPlanes = dstPlanes;
+			this.clipIntersection = source.clipIntersection;
+			this.clipShadows = source.clipShadows;
+			this.shadowSide = source.shadowSide;
+			this.colorWrite = source.colorWrite;
+			this.precision = source.precision;
+			this.polygonOffset = source.polygonOffset;
+			this.polygonOffsetFactor = source.polygonOffsetFactor;
+			this.polygonOffsetUnits = source.polygonOffsetUnits;
+			this.dithering = source.dithering;
+			this.alphaTest = source.alphaTest;
+			this.alphaToCoverage = source.alphaToCoverage;
+			this.premultipliedAlpha = source.premultipliedAlpha;
+			this.visible = source.visible;
+			this.toneMapped = source.toneMapped;
+			this.userData = JSON.parse(JSON.stringify(source.userData));
+			return this;
+		}
+
+		dispose() {
+			this.dispatchEvent({
+				type: 'dispose'
+			});
+		}
+
+		set needsUpdate(value) {
+			if (value === true) this.version++;
+		}
+
+	}
+
+	Material.prototype.isMaterial = true;
+
+	const _colorKeywords = {
+		'aliceblue': 0xF0F8FF,
+		'antiquewhite': 0xFAEBD7,
+		'aqua': 0x00FFFF,
+		'aquamarine': 0x7FFFD4,
+		'azure': 0xF0FFFF,
+		'beige': 0xF5F5DC,
+		'bisque': 0xFFE4C4,
+		'black': 0x000000,
+		'blanchedalmond': 0xFFEBCD,
+		'blue': 0x0000FF,
+		'blueviolet': 0x8A2BE2,
+		'brown': 0xA52A2A,
+		'burlywood': 0xDEB887,
+		'cadetblue': 0x5F9EA0,
+		'chartreuse': 0x7FFF00,
+		'chocolate': 0xD2691E,
+		'coral': 0xFF7F50,
+		'cornflowerblue': 0x6495ED,
+		'cornsilk': 0xFFF8DC,
+		'crimson': 0xDC143C,
+		'cyan': 0x00FFFF,
+		'darkblue': 0x00008B,
+		'darkcyan': 0x008B8B,
+		'darkgoldenrod': 0xB8860B,
+		'darkgray': 0xA9A9A9,
+		'darkgreen': 0x006400,
+		'darkgrey': 0xA9A9A9,
+		'darkkhaki': 0xBDB76B,
+		'darkmagenta': 0x8B008B,
+		'darkolivegreen': 0x556B2F,
+		'darkorange': 0xFF8C00,
+		'darkorchid': 0x9932CC,
+		'darkred': 0x8B0000,
+		'darksalmon': 0xE9967A,
+		'darkseagreen': 0x8FBC8F,
+		'darkslateblue': 0x483D8B,
+		'darkslategray': 0x2F4F4F,
+		'darkslategrey': 0x2F4F4F,
+		'darkturquoise': 0x00CED1,
+		'darkviolet': 0x9400D3,
+		'deeppink': 0xFF1493,
+		'deepskyblue': 0x00BFFF,
+		'dimgray': 0x696969,
+		'dimgrey': 0x696969,
+		'dodgerblue': 0x1E90FF,
+		'firebrick': 0xB22222,
+		'floralwhite': 0xFFFAF0,
+		'forestgreen': 0x228B22,
+		'fuchsia': 0xFF00FF,
+		'gainsboro': 0xDCDCDC,
+		'ghostwhite': 0xF8F8FF,
+		'gold': 0xFFD700,
+		'goldenrod': 0xDAA520,
+		'gray': 0x808080,
+		'green': 0x008000,
+		'greenyellow': 0xADFF2F,
+		'grey': 0x808080,
+		'honeydew': 0xF0FFF0,
+		'hotpink': 0xFF69B4,
+		'indianred': 0xCD5C5C,
+		'indigo': 0x4B0082,
+		'ivory': 0xFFFFF0,
+		'khaki': 0xF0E68C,
+		'lavender': 0xE6E6FA,
+		'lavenderblush': 0xFFF0F5,
+		'lawngreen': 0x7CFC00,
+		'lemonchiffon': 0xFFFACD,
+		'lightblue': 0xADD8E6,
+		'lightcoral': 0xF08080,
+		'lightcyan': 0xE0FFFF,
+		'lightgoldenrodyellow': 0xFAFAD2,
+		'lightgray': 0xD3D3D3,
+		'lightgreen': 0x90EE90,
+		'lightgrey': 0xD3D3D3,
+		'lightpink': 0xFFB6C1,
+		'lightsalmon': 0xFFA07A,
+		'lightseagreen': 0x20B2AA,
+		'lightskyblue': 0x87CEFA,
+		'lightslategray': 0x778899,
+		'lightslategrey': 0x778899,
+		'lightsteelblue': 0xB0C4DE,
+		'lightyellow': 0xFFFFE0,
+		'lime': 0x00FF00,
+		'limegreen': 0x32CD32,
+		'linen': 0xFAF0E6,
+		'magenta': 0xFF00FF,
+		'maroon': 0x800000,
+		'mediumaquamarine': 0x66CDAA,
+		'mediumblue': 0x0000CD,
+		'mediumorchid': 0xBA55D3,
+		'mediumpurple': 0x9370DB,
+		'mediumseagreen': 0x3CB371,
+		'mediumslateblue': 0x7B68EE,
+		'mediumspringgreen': 0x00FA9A,
+		'mediumturquoise': 0x48D1CC,
+		'mediumvioletred': 0xC71585,
+		'midnightblue': 0x191970,
+		'mintcream': 0xF5FFFA,
+		'mistyrose': 0xFFE4E1,
+		'moccasin': 0xFFE4B5,
+		'navajowhite': 0xFFDEAD,
+		'navy': 0x000080,
+		'oldlace': 0xFDF5E6,
+		'olive': 0x808000,
+		'olivedrab': 0x6B8E23,
+		'orange': 0xFFA500,
+		'orangered': 0xFF4500,
+		'orchid': 0xDA70D6,
+		'palegoldenrod': 0xEEE8AA,
+		'palegreen': 0x98FB98,
+		'paleturquoise': 0xAFEEEE,
+		'palevioletred': 0xDB7093,
+		'papayawhip': 0xFFEFD5,
+		'peachpuff': 0xFFDAB9,
+		'peru': 0xCD853F,
+		'pink': 0xFFC0CB,
+		'plum': 0xDDA0DD,
+		'powderblue': 0xB0E0E6,
+		'purple': 0x800080,
+		'rebeccapurple': 0x663399,
+		'red': 0xFF0000,
+		'rosybrown': 0xBC8F8F,
+		'royalblue': 0x4169E1,
+		'saddlebrown': 0x8B4513,
+		'salmon': 0xFA8072,
+		'sandybrown': 0xF4A460,
+		'seagreen': 0x2E8B57,
+		'seashell': 0xFFF5EE,
+		'sienna': 0xA0522D,
+		'silver': 0xC0C0C0,
+		'skyblue': 0x87CEEB,
+		'slateblue': 0x6A5ACD,
+		'slategray': 0x708090,
+		'slategrey': 0x708090,
+		'snow': 0xFFFAFA,
+		'springgreen': 0x00FF7F,
+		'steelblue': 0x4682B4,
+		'tan': 0xD2B48C,
+		'teal': 0x008080,
+		'thistle': 0xD8BFD8,
+		'tomato': 0xFF6347,
+		'turquoise': 0x40E0D0,
+		'violet': 0xEE82EE,
+		'wheat': 0xF5DEB3,
+		'white': 0xFFFFFF,
+		'whitesmoke': 0xF5F5F5,
+		'yellow': 0xFFFF00,
+		'yellowgreen': 0x9ACD32
+	};
+	const _hslA = {
+		h: 0,
+		s: 0,
+		l: 0
+	};
+	const _hslB = {
+		h: 0,
+		s: 0,
+		l: 0
+	};
 
-			return this;
+	function hue2rgb(p, q, t) {
+		if (t < 0) t += 1;
+		if (t > 1) t -= 1;
+		if (t < 1 / 6) return p + (q - p) * 6 * t;
+		if (t < 1 / 2) return q;
+		if (t < 2 / 3) return p + (q - p) * 6 * (2 / 3 - t);
+		return p;
+	}
 
-		},
+	function SRGBToLinear(c) {
+		return c < 0.04045 ? c * 0.0773993808 : Math.pow(c * 0.9478672986 + 0.0521327014, 2.4);
+	}
 
-		clamp: function ( min, max ) {
+	function LinearToSRGB(c) {
+		return c < 0.0031308 ? c * 12.92 : 1.055 * Math.pow(c, 0.41666) - 0.055;
+	}
 
-			// assumes min < max, componentwise
+	class Color {
+		constructor(r, g, b) {
+			if (g === undefined && b === undefined) {
+				// r is THREE.Color, hex or string
+				return this.set(r);
+			}
 
-			this.x = Math.max( min.x, Math.min( max.x, this.x ) );
-			this.y = Math.max( min.y, Math.min( max.y, this.y ) );
-			this.z = Math.max( min.z, Math.min( max.z, this.z ) );
+			return this.setRGB(r, g, b);
+		}
 
-			return this;
+		set(value) {
+			if (value && value.isColor) {
+				this.copy(value);
+			} else if (typeof value === 'number') {
+				this.setHex(value);
+			} else if (typeof value === 'string') {
+				this.setStyle(value);
+			}
 
-		},
+			return this;
+		}
 
-		clampScalar: function () {
+		setScalar(scalar) {
+			this.r = scalar;
+			this.g = scalar;
+			this.b = scalar;
+			return this;
+		}
 
-			var min = new Vector3();
-			var max = new Vector3();
+		setHex(hex) {
+			hex = Math.floor(hex);
+			this.r = (hex >> 16 & 255) / 255;
+			this.g = (hex >> 8 & 255) / 255;
+			this.b = (hex & 255) / 255;
+			return this;
+		}
 
-			return function clampScalar( minVal, maxVal ) {
+		setRGB(r, g, b) {
+			this.r = r;
+			this.g = g;
+			this.b = b;
+			return this;
+		}
 
-				min.set( minVal, minVal, minVal );
-				max.set( maxVal, maxVal, maxVal );
+		setHSL(h, s, l) {
+			// h,s,l ranges are in 0.0 - 1.0
+			h = euclideanModulo(h, 1);
+			s = clamp(s, 0, 1);
+			l = clamp(l, 0, 1);
 
-				return this.clamp( min, max );
+			if (s === 0) {
+				this.r = this.g = this.b = l;
+			} else {
+				const p = l <= 0.5 ? l * (1 + s) : l + s - l * s;
+				const q = 2 * l - p;
+				this.r = hue2rgb(q, p, h + 1 / 3);
+				this.g = hue2rgb(q, p, h);
+				this.b = hue2rgb(q, p, h - 1 / 3);
+			}
 
-			};
+			return this;
+		}
 
-		}(),
+		setStyle(style) {
+			function handleAlpha(string) {
+				if (string === undefined) return;
 
-		clampLength: function ( min, max ) {
+				if (parseFloat(string) < 1) {
+					console.warn('THREE.Color: Alpha component of ' + style + ' will be ignored.');
+				}
+			}
 
-			var length = this.length();
+			let m;
 
-			return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
+			if (m = /^((?:rgb|hsl)a?)\(([^\)]*)\)/.exec(style)) {
+				// rgb / hsl
+				let color;
+				const name = m[1];
+				const components = m[2];
 
-		},
+				switch (name) {
+					case 'rgb':
+					case 'rgba':
+						if (color = /^\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
+							// rgb(255,0,0) rgba(255,0,0,0.5)
+							this.r = Math.min(255, parseInt(color[1], 10)) / 255;
+							this.g = Math.min(255, parseInt(color[2], 10)) / 255;
+							this.b = Math.min(255, parseInt(color[3], 10)) / 255;
+							handleAlpha(color[4]);
+							return this;
+						}
 
-		floor: function () {
+						if (color = /^\s*(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
+							// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)
+							this.r = Math.min(100, parseInt(color[1], 10)) / 100;
+							this.g = Math.min(100, parseInt(color[2], 10)) / 100;
+							this.b = Math.min(100, parseInt(color[3], 10)) / 100;
+							handleAlpha(color[4]);
+							return this;
+						}
 
-			this.x = Math.floor( this.x );
-			this.y = Math.floor( this.y );
-			this.z = Math.floor( this.z );
+						break;
 
-			return this;
+					case 'hsl':
+					case 'hsla':
+						if (color = /^\s*(\d*\.?\d+)\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
+							// hsl(120,50%,50%) hsla(120,50%,50%,0.5)
+							const h = parseFloat(color[1]) / 360;
+							const s = parseInt(color[2], 10) / 100;
+							const l = parseInt(color[3], 10) / 100;
+							handleAlpha(color[4]);
+							return this.setHSL(h, s, l);
+						}
 
-		},
+						break;
+				}
+			} else if (m = /^\#([A-Fa-f\d]+)$/.exec(style)) {
+				// hex color
+				const hex = m[1];
+				const size = hex.length;
 
-		ceil: function () {
+				if (size === 3) {
+					// #ff0
+					this.r = parseInt(hex.charAt(0) + hex.charAt(0), 16) / 255;
+					this.g = parseInt(hex.charAt(1) + hex.charAt(1), 16) / 255;
+					this.b = parseInt(hex.charAt(2) + hex.charAt(2), 16) / 255;
+					return this;
+				} else if (size === 6) {
+					// #ff0000
+					this.r = parseInt(hex.charAt(0) + hex.charAt(1), 16) / 255;
+					this.g = parseInt(hex.charAt(2) + hex.charAt(3), 16) / 255;
+					this.b = parseInt(hex.charAt(4) + hex.charAt(5), 16) / 255;
+					return this;
+				}
+			}
 
-			this.x = Math.ceil( this.x );
-			this.y = Math.ceil( this.y );
-			this.z = Math.ceil( this.z );
+			if (style && style.length > 0) {
+				return this.setColorName(style);
+			}
 
 			return this;
+		}
 
-		},
-
-		round: function () {
+		setColorName(style) {
+			// color keywords
+			const hex = _colorKeywords[style.toLowerCase()];
 
-			this.x = Math.round( this.x );
-			this.y = Math.round( this.y );
-			this.z = Math.round( this.z );
+			if (hex !== undefined) {
+				// red
+				this.setHex(hex);
+			} else {
+				// unknown color
+				console.warn('THREE.Color: Unknown color ' + style);
+			}
 
 			return this;
+		}
 
-		},
-
-		roundToZero: function () {
-
-			this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
-			this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
-			this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
+		clone() {
+			return new this.constructor(this.r, this.g, this.b);
+		}
 
+		copy(color) {
+			this.r = color.r;
+			this.g = color.g;
+			this.b = color.b;
 			return this;
+		}
 
-		},
+		copyGammaToLinear(color, gammaFactor = 2.0) {
+			this.r = Math.pow(color.r, gammaFactor);
+			this.g = Math.pow(color.g, gammaFactor);
+			this.b = Math.pow(color.b, gammaFactor);
+			return this;
+		}
 
-		negate: function () {
+		copyLinearToGamma(color, gammaFactor = 2.0) {
+			const safeInverse = gammaFactor > 0 ? 1.0 / gammaFactor : 1.0;
+			this.r = Math.pow(color.r, safeInverse);
+			this.g = Math.pow(color.g, safeInverse);
+			this.b = Math.pow(color.b, safeInverse);
+			return this;
+		}
 
-			this.x = - this.x;
-			this.y = - this.y;
-			this.z = - this.z;
+		convertGammaToLinear(gammaFactor) {
+			this.copyGammaToLinear(this, gammaFactor);
+			return this;
+		}
 
+		convertLinearToGamma(gammaFactor) {
+			this.copyLinearToGamma(this, gammaFactor);
 			return this;
+		}
 
-		},
+		copySRGBToLinear(color) {
+			this.r = SRGBToLinear(color.r);
+			this.g = SRGBToLinear(color.g);
+			this.b = SRGBToLinear(color.b);
+			return this;
+		}
 
-		dot: function ( v ) {
+		copyLinearToSRGB(color) {
+			this.r = LinearToSRGB(color.r);
+			this.g = LinearToSRGB(color.g);
+			this.b = LinearToSRGB(color.b);
+			return this;
+		}
 
-			return this.x * v.x + this.y * v.y + this.z * v.z;
+		convertSRGBToLinear() {
+			this.copySRGBToLinear(this);
+			return this;
+		}
 
-		},
+		convertLinearToSRGB() {
+			this.copyLinearToSRGB(this);
+			return this;
+		}
 
-		// TODO lengthSquared?
+		getHex() {
+			return this.r * 255 << 16 ^ this.g * 255 << 8 ^ this.b * 255 << 0;
+		}
 
-		lengthSq: function () {
+		getHexString() {
+			return ('000000' + this.getHex().toString(16)).slice(-6);
+		}
 
-			return this.x * this.x + this.y * this.y + this.z * this.z;
+		getHSL(target) {
+			// h,s,l ranges are in 0.0 - 1.0
+			const r = this.r,
+						g = this.g,
+						b = this.b;
+			const max = Math.max(r, g, b);
+			const min = Math.min(r, g, b);
+			let hue, saturation;
+			const lightness = (min + max) / 2.0;
+
+			if (min === max) {
+				hue = 0;
+				saturation = 0;
+			} else {
+				const delta = max - min;
+				saturation = lightness <= 0.5 ? delta / (max + min) : delta / (2 - max - min);
 
-		},
+				switch (max) {
+					case r:
+						hue = (g - b) / delta + (g < b ? 6 : 0);
+						break;
 
-		length: function () {
+					case g:
+						hue = (b - r) / delta + 2;
+						break;
 
-			return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );
+					case b:
+						hue = (r - g) / delta + 4;
+						break;
+				}
 
-		},
+				hue /= 6;
+			}
 
-		manhattanLength: function () {
+			target.h = hue;
+			target.s = saturation;
+			target.l = lightness;
+			return target;
+		}
 
-			return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );
+		getStyle() {
+			return 'rgb(' + (this.r * 255 | 0) + ',' + (this.g * 255 | 0) + ',' + (this.b * 255 | 0) + ')';
+		}
 
-		},
+		offsetHSL(h, s, l) {
+			this.getHSL(_hslA);
+			_hslA.h += h;
+			_hslA.s += s;
+			_hslA.l += l;
+			this.setHSL(_hslA.h, _hslA.s, _hslA.l);
+			return this;
+		}
 
-		normalize: function () {
+		add(color) {
+			this.r += color.r;
+			this.g += color.g;
+			this.b += color.b;
+			return this;
+		}
 
-			return this.divideScalar( this.length() || 1 );
+		addColors(color1, color2) {
+			this.r = color1.r + color2.r;
+			this.g = color1.g + color2.g;
+			this.b = color1.b + color2.b;
+			return this;
+		}
 
-		},
+		addScalar(s) {
+			this.r += s;
+			this.g += s;
+			this.b += s;
+			return this;
+		}
 
-		setLength: function ( length ) {
+		sub(color) {
+			this.r = Math.max(0, this.r - color.r);
+			this.g = Math.max(0, this.g - color.g);
+			this.b = Math.max(0, this.b - color.b);
+			return this;
+		}
 
-			return this.normalize().multiplyScalar( length );
+		multiply(color) {
+			this.r *= color.r;
+			this.g *= color.g;
+			this.b *= color.b;
+			return this;
+		}
 
-		},
+		multiplyScalar(s) {
+			this.r *= s;
+			this.g *= s;
+			this.b *= s;
+			return this;
+		}
 
-		lerp: function ( v, alpha ) {
+		lerp(color, alpha) {
+			this.r += (color.r - this.r) * alpha;
+			this.g += (color.g - this.g) * alpha;
+			this.b += (color.b - this.b) * alpha;
+			return this;
+		}
 
-			this.x += ( v.x - this.x ) * alpha;
-			this.y += ( v.y - this.y ) * alpha;
-			this.z += ( v.z - this.z ) * alpha;
+		lerpColors(color1, color2, alpha) {
+			this.r = color1.r + (color2.r - color1.r) * alpha;
+			this.g = color1.g + (color2.g - color1.g) * alpha;
+			this.b = color1.b + (color2.b - color1.b) * alpha;
+			return this;
+		}
 
+		lerpHSL(color, alpha) {
+			this.getHSL(_hslA);
+			color.getHSL(_hslB);
+			const h = lerp(_hslA.h, _hslB.h, alpha);
+			const s = lerp(_hslA.s, _hslB.s, alpha);
+			const l = lerp(_hslA.l, _hslB.l, alpha);
+			this.setHSL(h, s, l);
 			return this;
+		}
 
-		},
+		equals(c) {
+			return c.r === this.r && c.g === this.g && c.b === this.b;
+		}
 
-		lerpVectors: function ( v1, v2, alpha ) {
+		fromArray(array, offset = 0) {
+			this.r = array[offset];
+			this.g = array[offset + 1];
+			this.b = array[offset + 2];
+			return this;
+		}
 
-			return this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 );
+		toArray(array = [], offset = 0) {
+			array[offset] = this.r;
+			array[offset + 1] = this.g;
+			array[offset + 2] = this.b;
+			return array;
+		}
 
-		},
+		fromBufferAttribute(attribute, index) {
+			this.r = attribute.getX(index);
+			this.g = attribute.getY(index);
+			this.b = attribute.getZ(index);
 
-		cross: function ( v, w ) {
+			if (attribute.normalized === true) {
+				// assuming Uint8Array
+				this.r /= 255;
+				this.g /= 255;
+				this.b /= 255;
+			}
 
-			if ( w !== undefined ) {
+			return this;
+		}
 
-				console.warn( 'THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.' );
-				return this.crossVectors( v, w );
+		toJSON() {
+			return this.getHex();
+		}
 
-			}
+	}
 
-			return this.crossVectors( this, v );
+	Color.NAMES = _colorKeywords;
+	Color.prototype.isColor = true;
+	Color.prototype.r = 1;
+	Color.prototype.g = 1;
+	Color.prototype.b = 1;
 
-		},
-
-		crossVectors: function ( a, b ) {
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	lightMap: new THREE.Texture( <Image> ),
+	 *	lightMapIntensity: <float>
+	 *
+	 *	aoMap: new THREE.Texture( <Image> ),
+	 *	aoMapIntensity: <float>
+	 *
+	 *	specularMap: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
+	 *	combine: THREE.Multiply,
+	 *	reflectivity: <float>,
+	 *	refractionRatio: <float>,
+	 *
+	 *	depthTest: <bool>,
+	 *	depthWrite: <bool>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	morphTargets: <bool>
+	 * }
+	 */
 
-			var ax = a.x, ay = a.y, az = a.z;
-			var bx = b.x, by = b.y, bz = b.z;
+	class MeshBasicMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'MeshBasicMaterial';
+			this.color = new Color(0xffffff); // emissive
+
+			this.map = null;
+			this.lightMap = null;
+			this.lightMapIntensity = 1.0;
+			this.aoMap = null;
+			this.aoMapIntensity = 1.0;
+			this.specularMap = null;
+			this.alphaMap = null;
+			this.envMap = null;
+			this.combine = MultiplyOperation;
+			this.reflectivity = 1;
+			this.refractionRatio = 0.98;
+			this.wireframe = false;
+			this.wireframeLinewidth = 1;
+			this.wireframeLinecap = 'round';
+			this.wireframeLinejoin = 'round';
+			this.morphTargets = false;
+			this.setValues(parameters);
+		}
+
+		copy(source) {
+			super.copy(source);
+			this.color.copy(source.color);
+			this.map = source.map;
+			this.lightMap = source.lightMap;
+			this.lightMapIntensity = source.lightMapIntensity;
+			this.aoMap = source.aoMap;
+			this.aoMapIntensity = source.aoMapIntensity;
+			this.specularMap = source.specularMap;
+			this.alphaMap = source.alphaMap;
+			this.envMap = source.envMap;
+			this.combine = source.combine;
+			this.reflectivity = source.reflectivity;
+			this.refractionRatio = source.refractionRatio;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.wireframeLinecap = source.wireframeLinecap;
+			this.wireframeLinejoin = source.wireframeLinejoin;
+			this.morphTargets = source.morphTargets;
+			return this;
+		}
 
-			this.x = ay * bz - az * by;
-			this.y = az * bx - ax * bz;
-			this.z = ax * by - ay * bx;
+	}
 
-			return this;
+	MeshBasicMaterial.prototype.isMeshBasicMaterial = true;
 
-		},
+	const _vector$9 = /*@__PURE__*/new Vector3();
 
-		projectOnVector: function ( vector ) {
+	const _vector2$1 = /*@__PURE__*/new Vector2();
 
-			var scalar = vector.dot( this ) / vector.lengthSq();
+	class BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			if (Array.isArray(array)) {
+				throw new TypeError('THREE.BufferAttribute: array should be a Typed Array.');
+			}
 
-			return this.copy( vector ).multiplyScalar( scalar );
+			this.name = '';
+			this.array = array;
+			this.itemSize = itemSize;
+			this.count = array !== undefined ? array.length / itemSize : 0;
+			this.normalized = normalized === true;
+			this.usage = StaticDrawUsage;
+			this.updateRange = {
+				offset: 0,
+				count: -1
+			};
+			this.version = 0;
+		}
 
-		},
+		onUploadCallback() {}
 
-		projectOnPlane: function () {
+		set needsUpdate(value) {
+			if (value === true) this.version++;
+		}
 
-			var v1 = new Vector3();
+		setUsage(value) {
+			this.usage = value;
+			return this;
+		}
 
-			return function projectOnPlane( planeNormal ) {
+		copy(source) {
+			this.name = source.name;
+			this.array = new source.array.constructor(source.array);
+			this.itemSize = source.itemSize;
+			this.count = source.count;
+			this.normalized = source.normalized;
+			this.usage = source.usage;
+			return this;
+		}
 
-				v1.copy( this ).projectOnVector( planeNormal );
+		copyAt(index1, attribute, index2) {
+			index1 *= this.itemSize;
+			index2 *= attribute.itemSize;
 
-				return this.sub( v1 );
+			for (let i = 0, l = this.itemSize; i < l; i++) {
+				this.array[index1 + i] = attribute.array[index2 + i];
+			}
 
-			};
+			return this;
+		}
 
-		}(),
+		copyArray(array) {
+			this.array.set(array);
+			return this;
+		}
 
-		reflect: function () {
+		copyColorsArray(colors) {
+			const array = this.array;
+			let offset = 0;
 
-			// reflect incident vector off plane orthogonal to normal
-			// normal is assumed to have unit length
+			for (let i = 0, l = colors.length; i < l; i++) {
+				let color = colors[i];
 
-			var v1 = new Vector3();
+				if (color === undefined) {
+					console.warn('THREE.BufferAttribute.copyColorsArray(): color is undefined', i);
+					color = new Color();
+				}
 
-			return function reflect( normal ) {
+				array[offset++] = color.r;
+				array[offset++] = color.g;
+				array[offset++] = color.b;
+			}
 
-				return this.sub( v1.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );
+			return this;
+		}
 
-			};
+		copyVector2sArray(vectors) {
+			const array = this.array;
+			let offset = 0;
 
-		}(),
+			for (let i = 0, l = vectors.length; i < l; i++) {
+				let vector = vectors[i];
 
-		angleTo: function ( v ) {
+				if (vector === undefined) {
+					console.warn('THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i);
+					vector = new Vector2();
+				}
 
-			var theta = this.dot( v ) / ( Math.sqrt( this.lengthSq() * v.lengthSq() ) );
+				array[offset++] = vector.x;
+				array[offset++] = vector.y;
+			}
 
-			// clamp, to handle numerical problems
+			return this;
+		}
 
-			return Math.acos( _Math.clamp( theta, - 1, 1 ) );
+		copyVector3sArray(vectors) {
+			const array = this.array;
+			let offset = 0;
 
-		},
+			for (let i = 0, l = vectors.length; i < l; i++) {
+				let vector = vectors[i];
 
-		distanceTo: function ( v ) {
+				if (vector === undefined) {
+					console.warn('THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i);
+					vector = new Vector3();
+				}
 
-			return Math.sqrt( this.distanceToSquared( v ) );
+				array[offset++] = vector.x;
+				array[offset++] = vector.y;
+				array[offset++] = vector.z;
+			}
 
-		},
+			return this;
+		}
 
-		distanceToSquared: function ( v ) {
+		copyVector4sArray(vectors) {
+			const array = this.array;
+			let offset = 0;
 
-			var dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;
+			for (let i = 0, l = vectors.length; i < l; i++) {
+				let vector = vectors[i];
 
-			return dx * dx + dy * dy + dz * dz;
+				if (vector === undefined) {
+					console.warn('THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i);
+					vector = new Vector4();
+				}
 
-		},
+				array[offset++] = vector.x;
+				array[offset++] = vector.y;
+				array[offset++] = vector.z;
+				array[offset++] = vector.w;
+			}
 
-		manhattanDistanceTo: function ( v ) {
+			return this;
+		}
 
-			return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );
+		applyMatrix3(m) {
+			if (this.itemSize === 2) {
+				for (let i = 0, l = this.count; i < l; i++) {
+					_vector2$1.fromBufferAttribute(this, i);
 
-		},
+					_vector2$1.applyMatrix3(m);
 
-		setFromSpherical: function ( s ) {
+					this.setXY(i, _vector2$1.x, _vector2$1.y);
+				}
+			} else if (this.itemSize === 3) {
+				for (let i = 0, l = this.count; i < l; i++) {
+					_vector$9.fromBufferAttribute(this, i);
 
-			var sinPhiRadius = Math.sin( s.phi ) * s.radius;
+					_vector$9.applyMatrix3(m);
 
-			this.x = sinPhiRadius * Math.sin( s.theta );
-			this.y = Math.cos( s.phi ) * s.radius;
-			this.z = sinPhiRadius * Math.cos( s.theta );
+					this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
+				}
+			}
 
 			return this;
+		}
 
-		},
+		applyMatrix4(m) {
+			for (let i = 0, l = this.count; i < l; i++) {
+				_vector$9.x = this.getX(i);
+				_vector$9.y = this.getY(i);
+				_vector$9.z = this.getZ(i);
 
-		setFromCylindrical: function ( c ) {
+				_vector$9.applyMatrix4(m);
 
-			this.x = c.radius * Math.sin( c.theta );
-			this.y = c.y;
-			this.z = c.radius * Math.cos( c.theta );
+				this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
+			}
 
 			return this;
+		}
 
-		},
-
-		setFromMatrixPosition: function ( m ) {
+		applyNormalMatrix(m) {
+			for (let i = 0, l = this.count; i < l; i++) {
+				_vector$9.x = this.getX(i);
+				_vector$9.y = this.getY(i);
+				_vector$9.z = this.getZ(i);
 
-			var e = m.elements;
+				_vector$9.applyNormalMatrix(m);
 
-			this.x = e[ 12 ];
-			this.y = e[ 13 ];
-			this.z = e[ 14 ];
+				this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
+			}
 
 			return this;
+		}
 
-		},
+		transformDirection(m) {
+			for (let i = 0, l = this.count; i < l; i++) {
+				_vector$9.x = this.getX(i);
+				_vector$9.y = this.getY(i);
+				_vector$9.z = this.getZ(i);
 
-		setFromMatrixScale: function ( m ) {
+				_vector$9.transformDirection(m);
 
-			var sx = this.setFromMatrixColumn( m, 0 ).length();
-			var sy = this.setFromMatrixColumn( m, 1 ).length();
-			var sz = this.setFromMatrixColumn( m, 2 ).length();
+				this.setXYZ(i, _vector$9.x, _vector$9.y, _vector$9.z);
+			}
 
-			this.x = sx;
-			this.y = sy;
-			this.z = sz;
+			return this;
+		}
 
+		set(value, offset = 0) {
+			this.array.set(value, offset);
 			return this;
+		}
 
-		},
+		getX(index) {
+			return this.array[index * this.itemSize];
+		}
+
+		setX(index, x) {
+			this.array[index * this.itemSize] = x;
+			return this;
+		}
 
-		setFromMatrixColumn: function ( m, index ) {
+		getY(index) {
+			return this.array[index * this.itemSize + 1];
+		}
 
-			return this.fromArray( m.elements, index * 4 );
+		setY(index, y) {
+			this.array[index * this.itemSize + 1] = y;
+			return this;
+		}
 
-		},
+		getZ(index) {
+			return this.array[index * this.itemSize + 2];
+		}
 
-		equals: function ( v ) {
+		setZ(index, z) {
+			this.array[index * this.itemSize + 2] = z;
+			return this;
+		}
 
-			return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );
+		getW(index) {
+			return this.array[index * this.itemSize + 3];
+		}
 
-		},
+		setW(index, w) {
+			this.array[index * this.itemSize + 3] = w;
+			return this;
+		}
 
-		fromArray: function ( array, offset ) {
+		setXY(index, x, y) {
+			index *= this.itemSize;
+			this.array[index + 0] = x;
+			this.array[index + 1] = y;
+			return this;
+		}
 
-			if ( offset === undefined ) offset = 0;
+		setXYZ(index, x, y, z) {
+			index *= this.itemSize;
+			this.array[index + 0] = x;
+			this.array[index + 1] = y;
+			this.array[index + 2] = z;
+			return this;
+		}
 
-			this.x = array[ offset ];
-			this.y = array[ offset + 1 ];
-			this.z = array[ offset + 2 ];
+		setXYZW(index, x, y, z, w) {
+			index *= this.itemSize;
+			this.array[index + 0] = x;
+			this.array[index + 1] = y;
+			this.array[index + 2] = z;
+			this.array[index + 3] = w;
+			return this;
+		}
 
+		onUpload(callback) {
+			this.onUploadCallback = callback;
 			return this;
+		}
 
-		},
+		clone() {
+			return new this.constructor(this.array, this.itemSize).copy(this);
+		}
 
-		toArray: function ( array, offset ) {
+		toJSON() {
+			const data = {
+				itemSize: this.itemSize,
+				type: this.array.constructor.name,
+				array: Array.prototype.slice.call(this.array),
+				normalized: this.normalized
+			};
+			if (this.name !== '') data.name = this.name;
+			if (this.usage !== StaticDrawUsage) data.usage = this.usage;
+			if (this.updateRange.offset !== 0 || this.updateRange.count !== -1) data.updateRange = this.updateRange;
+			return data;
+		}
 
-			if ( array === undefined ) array = [];
-			if ( offset === undefined ) offset = 0;
+	}
 
-			array[ offset ] = this.x;
-			array[ offset + 1 ] = this.y;
-			array[ offset + 2 ] = this.z;
+	BufferAttribute.prototype.isBufferAttribute = true; //
 
-			return array;
+	class Int8BufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			super(new Int8Array(array), itemSize, normalized);
+		}
 
-		},
+	}
 
-		fromBufferAttribute: function ( attribute, index, offset ) {
+	class Uint8BufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			super(new Uint8Array(array), itemSize, normalized);
+		}
 
-			if ( offset !== undefined ) {
+	}
 
-				console.warn( 'THREE.Vector3: offset has been removed from .fromBufferAttribute().' );
+	class Uint8ClampedBufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			super(new Uint8ClampedArray(array), itemSize, normalized);
+		}
 
-			}
+	}
 
-			this.x = attribute.getX( index );
-			this.y = attribute.getY( index );
-			this.z = attribute.getZ( index );
+	class Int16BufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			super(new Int16Array(array), itemSize, normalized);
+		}
 
-			return this;
+	}
 
+	class Uint16BufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			super(new Uint16Array(array), itemSize, normalized);
 		}
 
-	} );
+	}
 
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 * @author bhouston / http://clara.io
-	 * @author tschw
-	 */
+	class Int32BufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			super(new Int32Array(array), itemSize, normalized);
+		}
 
-	function Matrix3() {
+	}
 
-		this.elements = [
+	class Uint32BufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			super(new Uint32Array(array), itemSize, normalized);
+		}
 
-			1, 0, 0,
-			0, 1, 0,
-			0, 0, 1
+	}
 
-		];
+	class Float16BufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			super(new Uint16Array(array), itemSize, normalized);
+		}
 
-		if ( arguments.length > 0 ) {
+	}
 
-			console.error( 'THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.' );
+	Float16BufferAttribute.prototype.isFloat16BufferAttribute = true;
 
+	class Float32BufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			super(new Float32Array(array), itemSize, normalized);
 		}
 
 	}
 
-	Object.assign( Matrix3.prototype, {
+	class Float64BufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized) {
+			super(new Float64Array(array), itemSize, normalized);
+		}
 
-		isMatrix3: true,
+	} //
 
-		set: function ( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {
+	function arrayMax(array) {
+		if (array.length === 0) return -Infinity;
+		let max = array[0];
 
-			var te = this.elements;
+		for (let i = 1, l = array.length; i < l; ++i) {
+			if (array[i] > max) max = array[i];
+		}
 
-			te[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;
-			te[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;
-			te[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;
+		return max;
+	}
 
-			return this;
+	const TYPED_ARRAYS = {
+		Int8Array: Int8Array,
+		Uint8Array: Uint8Array,
+		Uint8ClampedArray: Uint8ClampedArray,
+		Int16Array: Int16Array,
+		Uint16Array: Uint16Array,
+		Int32Array: Int32Array,
+		Uint32Array: Uint32Array,
+		Float32Array: Float32Array,
+		Float64Array: Float64Array
+	};
 
-		},
+	function getTypedArray(type, buffer) {
+		return new TYPED_ARRAYS[type](buffer);
+	}
 
-		identity: function () {
+	let _id = 0;
 
-			this.set(
+	const _m1 = /*@__PURE__*/new Matrix4();
 
-				1, 0, 0,
-				0, 1, 0,
-				0, 0, 1
+	const _obj = /*@__PURE__*/new Object3D();
 
-			);
+	const _offset = /*@__PURE__*/new Vector3();
 
-			return this;
+	const _box$1 = /*@__PURE__*/new Box3();
 
-		},
+	const _boxMorphTargets = /*@__PURE__*/new Box3();
 
-		clone: function () {
+	const _vector$8 = /*@__PURE__*/new Vector3();
 
-			return new this.constructor().fromArray( this.elements );
+	class BufferGeometry extends EventDispatcher {
+		constructor() {
+			super();
+			Object.defineProperty(this, 'id', {
+				value: _id++
+			});
+			this.uuid = generateUUID();
+			this.name = '';
+			this.type = 'BufferGeometry';
+			this.index = null;
+			this.attributes = {};
+			this.morphAttributes = {};
+			this.morphTargetsRelative = false;
+			this.groups = [];
+			this.boundingBox = null;
+			this.boundingSphere = null;
+			this.drawRange = {
+				start: 0,
+				count: Infinity
+			};
+			this.userData = {};
+		}
 
-		},
+		getIndex() {
+			return this.index;
+		}
 
-		copy: function ( m ) {
+		setIndex(index) {
+			if (Array.isArray(index)) {
+				this.index = new (arrayMax(index) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute)(index, 1);
+			} else {
+				this.index = index;
+			}
 
-			var te = this.elements;
-			var me = m.elements;
+			return this;
+		}
 
-			te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];
-			te[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];
-			te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];
+		getAttribute(name) {
+			return this.attributes[name];
+		}
 
+		setAttribute(name, attribute) {
+			this.attributes[name] = attribute;
 			return this;
+		}
 
-		},
+		deleteAttribute(name) {
+			delete this.attributes[name];
+			return this;
+		}
 
-		setFromMatrix4: function ( m ) {
+		hasAttribute(name) {
+			return this.attributes[name] !== undefined;
+		}
 
-			var me = m.elements;
+		addGroup(start, count, materialIndex = 0) {
+			this.groups.push({
+				start: start,
+				count: count,
+				materialIndex: materialIndex
+			});
+		}
 
-			this.set(
+		clearGroups() {
+			this.groups = [];
+		}
 
-				me[ 0 ], me[ 4 ], me[ 8 ],
-				me[ 1 ], me[ 5 ], me[ 9 ],
-				me[ 2 ], me[ 6 ], me[ 10 ]
+		setDrawRange(start, count) {
+			this.drawRange.start = start;
+			this.drawRange.count = count;
+		}
 
-			);
+		applyMatrix4(matrix) {
+			const position = this.attributes.position;
 
-			return this;
+			if (position !== undefined) {
+				position.applyMatrix4(matrix);
+				position.needsUpdate = true;
+			}
 
-		},
+			const normal = this.attributes.normal;
 
-		applyToBufferAttribute: function () {
+			if (normal !== undefined) {
+				const normalMatrix = new Matrix3().getNormalMatrix(matrix);
+				normal.applyNormalMatrix(normalMatrix);
+				normal.needsUpdate = true;
+			}
 
-			var v1 = new Vector3();
+			const tangent = this.attributes.tangent;
 
-			return function applyToBufferAttribute( attribute ) {
+			if (tangent !== undefined) {
+				tangent.transformDirection(matrix);
+				tangent.needsUpdate = true;
+			}
 
-				for ( var i = 0, l = attribute.count; i < l; i ++ ) {
+			if (this.boundingBox !== null) {
+				this.computeBoundingBox();
+			}
 
-					v1.x = attribute.getX( i );
-					v1.y = attribute.getY( i );
-					v1.z = attribute.getZ( i );
+			if (this.boundingSphere !== null) {
+				this.computeBoundingSphere();
+			}
 
-					v1.applyMatrix3( this );
+			return this;
+		}
 
-					attribute.setXYZ( i, v1.x, v1.y, v1.z );
+		applyQuaternion(q) {
+			_m1.makeRotationFromQuaternion(q);
 
-				}
+			this.applyMatrix4(_m1);
+			return this;
+		}
 
-				return attribute;
+		rotateX(angle) {
+			// rotate geometry around world x-axis
+			_m1.makeRotationX(angle);
 
-			};
+			this.applyMatrix4(_m1);
+			return this;
+		}
 
-		}(),
+		rotateY(angle) {
+			// rotate geometry around world y-axis
+			_m1.makeRotationY(angle);
 
-		multiply: function ( m ) {
+			this.applyMatrix4(_m1);
+			return this;
+		}
 
-			return this.multiplyMatrices( this, m );
+		rotateZ(angle) {
+			// rotate geometry around world z-axis
+			_m1.makeRotationZ(angle);
 
-		},
+			this.applyMatrix4(_m1);
+			return this;
+		}
 
-		premultiply: function ( m ) {
+		translate(x, y, z) {
+			// translate geometry
+			_m1.makeTranslation(x, y, z);
 
-			return this.multiplyMatrices( m, this );
+			this.applyMatrix4(_m1);
+			return this;
+		}
 
-		},
+		scale(x, y, z) {
+			// scale geometry
+			_m1.makeScale(x, y, z);
 
-		multiplyMatrices: function ( a, b ) {
+			this.applyMatrix4(_m1);
+			return this;
+		}
 
-			var ae = a.elements;
-			var be = b.elements;
-			var te = this.elements;
+		lookAt(vector) {
+			_obj.lookAt(vector);
 
-			var a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];
-			var a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];
-			var a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];
+			_obj.updateMatrix();
 
-			var b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];
-			var b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];
-			var b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];
+			this.applyMatrix4(_obj.matrix);
+			return this;
+		}
 
-			te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;
-			te[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;
-			te[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;
+		center() {
+			this.computeBoundingBox();
+			this.boundingBox.getCenter(_offset).negate();
+			this.translate(_offset.x, _offset.y, _offset.z);
+			return this;
+		}
 
-			te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;
-			te[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;
-			te[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;
+		setFromPoints(points) {
+			const position = [];
 
-			te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;
-			te[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;
-			te[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;
+			for (let i = 0, l = points.length; i < l; i++) {
+				const point = points[i];
+				position.push(point.x, point.y, point.z || 0);
+			}
 
+			this.setAttribute('position', new Float32BufferAttribute(position, 3));
 			return this;
+		}
 
-		},
-
-		multiplyScalar: function ( s ) {
+		computeBoundingBox() {
+			if (this.boundingBox === null) {
+				this.boundingBox = new Box3();
+			}
 
-			var te = this.elements;
+			const position = this.attributes.position;
+			const morphAttributesPosition = this.morphAttributes.position;
 
-			te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
-			te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
-			te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;
+			if (position && position.isGLBufferAttribute) {
+				console.error('THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set "mesh.frustumCulled" to "false".', this);
+				this.boundingBox.set(new Vector3(-Infinity, -Infinity, -Infinity), new Vector3(+Infinity, +Infinity, +Infinity));
+				return;
+			}
 
-			return this;
+			if (position !== undefined) {
+				this.boundingBox.setFromBufferAttribute(position); // process morph attributes if present
 
-		},
+				if (morphAttributesPosition) {
+					for (let i = 0, il = morphAttributesPosition.length; i < il; i++) {
+						const morphAttribute = morphAttributesPosition[i];
 
-		determinant: function () {
+						_box$1.setFromBufferAttribute(morphAttribute);
 
-			var te = this.elements;
+						if (this.morphTargetsRelative) {
+							_vector$8.addVectors(this.boundingBox.min, _box$1.min);
 
-			var a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
-				d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
-				g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];
+							this.boundingBox.expandByPoint(_vector$8);
 
-			return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
+							_vector$8.addVectors(this.boundingBox.max, _box$1.max);
 
-		},
+							this.boundingBox.expandByPoint(_vector$8);
+						} else {
+							this.boundingBox.expandByPoint(_box$1.min);
+							this.boundingBox.expandByPoint(_box$1.max);
+						}
+					}
+				}
+			} else {
+				this.boundingBox.makeEmpty();
+			}
 
-		getInverse: function ( matrix, throwOnDegenerate ) {
+			if (isNaN(this.boundingBox.min.x) || isNaN(this.boundingBox.min.y) || isNaN(this.boundingBox.min.z)) {
+				console.error('THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this);
+			}
+		}
 
-			if ( matrix && matrix.isMatrix4 ) {
+		computeBoundingSphere() {
+			if (this.boundingSphere === null) {
+				this.boundingSphere = new Sphere();
+			}
 
-				console.error( "THREE.Matrix3: .getInverse() no longer takes a Matrix4 argument." );
+			const position = this.attributes.position;
+			const morphAttributesPosition = this.morphAttributes.position;
 
+			if (position && position.isGLBufferAttribute) {
+				console.error('THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set "mesh.frustumCulled" to "false".', this);
+				this.boundingSphere.set(new Vector3(), Infinity);
+				return;
 			}
 
-			var me = matrix.elements,
-				te = this.elements,
+			if (position) {
+				// first, find the center of the bounding sphere
+				const center = this.boundingSphere.center;
 
-				n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ],
-				n12 = me[ 3 ], n22 = me[ 4 ], n32 = me[ 5 ],
-				n13 = me[ 6 ], n23 = me[ 7 ], n33 = me[ 8 ],
+				_box$1.setFromBufferAttribute(position); // process morph attributes if present
 
-				t11 = n33 * n22 - n32 * n23,
-				t12 = n32 * n13 - n33 * n12,
-				t13 = n23 * n12 - n22 * n13,
 
-				det = n11 * t11 + n21 * t12 + n31 * t13;
+				if (morphAttributesPosition) {
+					for (let i = 0, il = morphAttributesPosition.length; i < il; i++) {
+						const morphAttribute = morphAttributesPosition[i];
 
-			if ( det === 0 ) {
+						_boxMorphTargets.setFromBufferAttribute(morphAttribute);
 
-				var msg = "THREE.Matrix3: .getInverse() can't invert matrix, determinant is 0";
+						if (this.morphTargetsRelative) {
+							_vector$8.addVectors(_box$1.min, _boxMorphTargets.min);
 
-				if ( throwOnDegenerate === true ) {
+							_box$1.expandByPoint(_vector$8);
 
-					throw new Error( msg );
+							_vector$8.addVectors(_box$1.max, _boxMorphTargets.max);
 
-				} else {
-
-					console.warn( msg );
+							_box$1.expandByPoint(_vector$8);
+						} else {
+							_box$1.expandByPoint(_boxMorphTargets.min);
 
+							_box$1.expandByPoint(_boxMorphTargets.max);
+						}
+					}
 				}
 
-				return this.identity();
+				_box$1.getCenter(center); // second, try to find a boundingSphere with a radius smaller than the
+				// boundingSphere of the boundingBox: sqrt(3) smaller in the best case
 
-			}
 
-			var detInv = 1 / det;
+				let maxRadiusSq = 0;
 
-			te[ 0 ] = t11 * detInv;
-			te[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;
-			te[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;
+				for (let i = 0, il = position.count; i < il; i++) {
+					_vector$8.fromBufferAttribute(position, i);
 
-			te[ 3 ] = t12 * detInv;
-			te[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;
-			te[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;
+					maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(_vector$8));
+				} // process morph attributes if present
 
-			te[ 6 ] = t13 * detInv;
-			te[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;
-			te[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;
 
-			return this;
+				if (morphAttributesPosition) {
+					for (let i = 0, il = morphAttributesPosition.length; i < il; i++) {
+						const morphAttribute = morphAttributesPosition[i];
+						const morphTargetsRelative = this.morphTargetsRelative;
 
-		},
+						for (let j = 0, jl = morphAttribute.count; j < jl; j++) {
+							_vector$8.fromBufferAttribute(morphAttribute, j);
 
-		transpose: function () {
+							if (morphTargetsRelative) {
+								_offset.fromBufferAttribute(position, j);
 
-			var tmp, m = this.elements;
+								_vector$8.add(_offset);
+							}
 
-			tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
-			tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
-			tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;
+							maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(_vector$8));
+						}
+					}
+				}
 
-			return this;
+				this.boundingSphere.radius = Math.sqrt(maxRadiusSq);
 
-		},
+				if (isNaN(this.boundingSphere.radius)) {
+					console.error('THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this);
+				}
+			}
+		}
 
-		getNormalMatrix: function ( matrix4 ) {
+		computeFaceNormals() {// backwards compatibility
+		}
 
-			return this.setFromMatrix4( matrix4 ).getInverse( this ).transpose();
+		computeTangents() {
+			const index = this.index;
+			const attributes = this.attributes; // based on http://www.terathon.com/code/tangent.html
+			// (per vertex tangents)
 
-		},
+			if (index === null || attributes.position === undefined || attributes.normal === undefined || attributes.uv === undefined) {
+				console.error('THREE.BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)');
+				return;
+			}
 
-		transposeIntoArray: function ( r ) {
+			const indices = index.array;
+			const positions = attributes.position.array;
+			const normals = attributes.normal.array;
+			const uvs = attributes.uv.array;
+			const nVertices = positions.length / 3;
 
-			var m = this.elements;
+			if (attributes.tangent === undefined) {
+				this.setAttribute('tangent', new BufferAttribute(new Float32Array(4 * nVertices), 4));
+			}
 
-			r[ 0 ] = m[ 0 ];
-			r[ 1 ] = m[ 3 ];
-			r[ 2 ] = m[ 6 ];
-			r[ 3 ] = m[ 1 ];
-			r[ 4 ] = m[ 4 ];
-			r[ 5 ] = m[ 7 ];
-			r[ 6 ] = m[ 2 ];
-			r[ 7 ] = m[ 5 ];
-			r[ 8 ] = m[ 8 ];
+			const tangents = attributes.tangent.array;
+			const tan1 = [],
+						tan2 = [];
 
-			return this;
+			for (let i = 0; i < nVertices; i++) {
+				tan1[i] = new Vector3();
+				tan2[i] = new Vector3();
+			}
 
-		},
+			const vA = new Vector3(),
+						vB = new Vector3(),
+						vC = new Vector3(),
+						uvA = new Vector2(),
+						uvB = new Vector2(),
+						uvC = new Vector2(),
+						sdir = new Vector3(),
+						tdir = new Vector3();
 
-		setUvTransform: function ( tx, ty, sx, sy, rotation, cx, cy ) {
+			function handleTriangle(a, b, c) {
+				vA.fromArray(positions, a * 3);
+				vB.fromArray(positions, b * 3);
+				vC.fromArray(positions, c * 3);
+				uvA.fromArray(uvs, a * 2);
+				uvB.fromArray(uvs, b * 2);
+				uvC.fromArray(uvs, c * 2);
+				vB.sub(vA);
+				vC.sub(vA);
+				uvB.sub(uvA);
+				uvC.sub(uvA);
+				const r = 1.0 / (uvB.x * uvC.y - uvC.x * uvB.y); // silently ignore degenerate uv triangles having coincident or colinear vertices
 
-			var c = Math.cos( rotation );
-			var s = Math.sin( rotation );
+				if (!isFinite(r)) return;
+				sdir.copy(vB).multiplyScalar(uvC.y).addScaledVector(vC, -uvB.y).multiplyScalar(r);
+				tdir.copy(vC).multiplyScalar(uvB.x).addScaledVector(vB, -uvC.x).multiplyScalar(r);
+				tan1[a].add(sdir);
+				tan1[b].add(sdir);
+				tan1[c].add(sdir);
+				tan2[a].add(tdir);
+				tan2[b].add(tdir);
+				tan2[c].add(tdir);
+			}
 
-			this.set(
-				sx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,
-				- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,
-				0, 0, 1
-			);
+			let groups = this.groups;
 
-		},
+			if (groups.length === 0) {
+				groups = [{
+					start: 0,
+					count: indices.length
+				}];
+			}
 
-		scale: function ( sx, sy ) {
+			for (let i = 0, il = groups.length; i < il; ++i) {
+				const group = groups[i];
+				const start = group.start;
+				const count = group.count;
 
-			var te = this.elements;
+				for (let j = start, jl = start + count; j < jl; j += 3) {
+					handleTriangle(indices[j + 0], indices[j + 1], indices[j + 2]);
+				}
+			}
 
-			te[ 0 ] *= sx; te[ 3 ] *= sx; te[ 6 ] *= sx;
-			te[ 1 ] *= sy; te[ 4 ] *= sy; te[ 7 ] *= sy;
+			const tmp = new Vector3(),
+						tmp2 = new Vector3();
+			const n = new Vector3(),
+						n2 = new Vector3();
 
-			return this;
+			function handleVertex(v) {
+				n.fromArray(normals, v * 3);
+				n2.copy(n);
+				const t = tan1[v]; // Gram-Schmidt orthogonalize
 
-		},
+				tmp.copy(t);
+				tmp.sub(n.multiplyScalar(n.dot(t))).normalize(); // Calculate handedness
 
-		rotate: function ( theta ) {
+				tmp2.crossVectors(n2, t);
+				const test = tmp2.dot(tan2[v]);
+				const w = test < 0.0 ? -1.0 : 1.0;
+				tangents[v * 4] = tmp.x;
+				tangents[v * 4 + 1] = tmp.y;
+				tangents[v * 4 + 2] = tmp.z;
+				tangents[v * 4 + 3] = w;
+			}
 
-			var c = Math.cos( theta );
-			var s = Math.sin( theta );
+			for (let i = 0, il = groups.length; i < il; ++i) {
+				const group = groups[i];
+				const start = group.start;
+				const count = group.count;
 
-			var te = this.elements;
+				for (let j = start, jl = start + count; j < jl; j += 3) {
+					handleVertex(indices[j + 0]);
+					handleVertex(indices[j + 1]);
+					handleVertex(indices[j + 2]);
+				}
+			}
+		}
 
-			var a11 = te[ 0 ], a12 = te[ 3 ], a13 = te[ 6 ];
-			var a21 = te[ 1 ], a22 = te[ 4 ], a23 = te[ 7 ];
+		computeVertexNormals() {
+			const index = this.index;
+			const positionAttribute = this.getAttribute('position');
 
-			te[ 0 ] = c * a11 + s * a21;
-			te[ 3 ] = c * a12 + s * a22;
-			te[ 6 ] = c * a13 + s * a23;
+			if (positionAttribute !== undefined) {
+				let normalAttribute = this.getAttribute('normal');
 
-			te[ 1 ] = - s * a11 + c * a21;
-			te[ 4 ] = - s * a12 + c * a22;
-			te[ 7 ] = - s * a13 + c * a23;
+				if (normalAttribute === undefined) {
+					normalAttribute = new BufferAttribute(new Float32Array(positionAttribute.count * 3), 3);
+					this.setAttribute('normal', normalAttribute);
+				} else {
+					// reset existing normals to zero
+					for (let i = 0, il = normalAttribute.count; i < il; i++) {
+						normalAttribute.setXYZ(i, 0, 0, 0);
+					}
+				}
 
-			return this;
+				const pA = new Vector3(),
+							pB = new Vector3(),
+							pC = new Vector3();
+				const nA = new Vector3(),
+							nB = new Vector3(),
+							nC = new Vector3();
+				const cb = new Vector3(),
+							ab = new Vector3(); // indexed elements
+
+				if (index) {
+					for (let i = 0, il = index.count; i < il; i += 3) {
+						const vA = index.getX(i + 0);
+						const vB = index.getX(i + 1);
+						const vC = index.getX(i + 2);
+						pA.fromBufferAttribute(positionAttribute, vA);
+						pB.fromBufferAttribute(positionAttribute, vB);
+						pC.fromBufferAttribute(positionAttribute, vC);
+						cb.subVectors(pC, pB);
+						ab.subVectors(pA, pB);
+						cb.cross(ab);
+						nA.fromBufferAttribute(normalAttribute, vA);
+						nB.fromBufferAttribute(normalAttribute, vB);
+						nC.fromBufferAttribute(normalAttribute, vC);
+						nA.add(cb);
+						nB.add(cb);
+						nC.add(cb);
+						normalAttribute.setXYZ(vA, nA.x, nA.y, nA.z);
+						normalAttribute.setXYZ(vB, nB.x, nB.y, nB.z);
+						normalAttribute.setXYZ(vC, nC.x, nC.y, nC.z);
+					}
+				} else {
+					// non-indexed elements (unconnected triangle soup)
+					for (let i = 0, il = positionAttribute.count; i < il; i += 3) {
+						pA.fromBufferAttribute(positionAttribute, i + 0);
+						pB.fromBufferAttribute(positionAttribute, i + 1);
+						pC.fromBufferAttribute(positionAttribute, i + 2);
+						cb.subVectors(pC, pB);
+						ab.subVectors(pA, pB);
+						cb.cross(ab);
+						normalAttribute.setXYZ(i + 0, cb.x, cb.y, cb.z);
+						normalAttribute.setXYZ(i + 1, cb.x, cb.y, cb.z);
+						normalAttribute.setXYZ(i + 2, cb.x, cb.y, cb.z);
+					}
+				}
 
-		},
+				this.normalizeNormals();
+				normalAttribute.needsUpdate = true;
+			}
+		}
 
-		translate: function ( tx, ty ) {
+		merge(geometry, offset) {
+			if (!(geometry && geometry.isBufferGeometry)) {
+				console.error('THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry);
+				return;
+			}
 
-			var te = this.elements;
+			if (offset === undefined) {
+				offset = 0;
+				console.warn('THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. ' + 'Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge.');
+			}
 
-			te[ 0 ] += tx * te[ 2 ]; te[ 3 ] += tx * te[ 5 ]; te[ 6 ] += tx * te[ 8 ];
-			te[ 1 ] += ty * te[ 2 ]; te[ 4 ] += ty * te[ 5 ]; te[ 7 ] += ty * te[ 8 ];
+			const attributes = this.attributes;
 
-			return this;
+			for (const key in attributes) {
+				if (geometry.attributes[key] === undefined) continue;
+				const attribute1 = attributes[key];
+				const attributeArray1 = attribute1.array;
+				const attribute2 = geometry.attributes[key];
+				const attributeArray2 = attribute2.array;
+				const attributeOffset = attribute2.itemSize * offset;
+				const length = Math.min(attributeArray2.length, attributeArray1.length - attributeOffset);
 
-		},
+				for (let i = 0, j = attributeOffset; i < length; i++, j++) {
+					attributeArray1[j] = attributeArray2[i];
+				}
+			}
 
-		equals: function ( matrix ) {
+			return this;
+		}
 
-			var te = this.elements;
-			var me = matrix.elements;
+		normalizeNormals() {
+			const normals = this.attributes.normal;
 
-			for ( var i = 0; i < 9; i ++ ) {
+			for (let i = 0, il = normals.count; i < il; i++) {
+				_vector$8.fromBufferAttribute(normals, i);
 
-				if ( te[ i ] !== me[ i ] ) return false;
+				_vector$8.normalize();
 
+				normals.setXYZ(i, _vector$8.x, _vector$8.y, _vector$8.z);
 			}
+		}
 
-			return true;
-
-		},
+		toNonIndexed() {
+			function convertBufferAttribute(attribute, indices) {
+				const array = attribute.array;
+				const itemSize = attribute.itemSize;
+				const normalized = attribute.normalized;
+				const array2 = new array.constructor(indices.length * itemSize);
+				let index = 0,
+						index2 = 0;
 
-		fromArray: function ( array, offset ) {
+				for (let i = 0, l = indices.length; i < l; i++) {
+					if (attribute.isInterleavedBufferAttribute) {
+						index = indices[i] * attribute.data.stride + attribute.offset;
+					} else {
+						index = indices[i] * itemSize;
+					}
 
-			if ( offset === undefined ) offset = 0;
+					for (let j = 0; j < itemSize; j++) {
+						array2[index2++] = array[index++];
+					}
+				}
 
-			for ( var i = 0; i < 9; i ++ ) {
+				return new BufferAttribute(array2, itemSize, normalized);
+			} //
 
-				this.elements[ i ] = array[ i + offset ];
 
+			if (this.index === null) {
+				console.warn('THREE.BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed.');
+				return this;
 			}
 
-			return this;
+			const geometry2 = new BufferGeometry();
+			const indices = this.index.array;
+			const attributes = this.attributes; // attributes
 
-		},
+			for (const name in attributes) {
+				const attribute = attributes[name];
+				const newAttribute = convertBufferAttribute(attribute, indices);
+				geometry2.setAttribute(name, newAttribute);
+			} // morph attributes
 
-		toArray: function ( array, offset ) {
 
-			if ( array === undefined ) array = [];
-			if ( offset === undefined ) offset = 0;
+			const morphAttributes = this.morphAttributes;
 
-			var te = this.elements;
+			for (const name in morphAttributes) {
+				const morphArray = [];
+				const morphAttribute = morphAttributes[name]; // morphAttribute: array of Float32BufferAttributes
+
+				for (let i = 0, il = morphAttribute.length; i < il; i++) {
+					const attribute = morphAttribute[i];
+					const newAttribute = convertBufferAttribute(attribute, indices);
+					morphArray.push(newAttribute);
+				}
 
-			array[ offset ] = te[ 0 ];
-			array[ offset + 1 ] = te[ 1 ];
-			array[ offset + 2 ] = te[ 2 ];
+				geometry2.morphAttributes[name] = morphArray;
+			}
 
-			array[ offset + 3 ] = te[ 3 ];
-			array[ offset + 4 ] = te[ 4 ];
-			array[ offset + 5 ] = te[ 5 ];
+			geometry2.morphTargetsRelative = this.morphTargetsRelative; // groups
 
-			array[ offset + 6 ] = te[ 6 ];
-			array[ offset + 7 ] = te[ 7 ];
-			array[ offset + 8 ] = te[ 8 ];
+			const groups = this.groups;
 
-			return array;
+			for (let i = 0, l = groups.length; i < l; i++) {
+				const group = groups[i];
+				geometry2.addGroup(group.start, group.count, group.materialIndex);
+			}
 
+			return geometry2;
 		}
 
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author szimek / https://github.com/szimek/
-	 */
+		toJSON() {
+			const data = {
+				metadata: {
+					version: 4.5,
+					type: 'BufferGeometry',
+					generator: 'BufferGeometry.toJSON'
+				}
+			}; // standard BufferGeometry serialization
 
-	var textureId = 0;
+			data.uuid = this.uuid;
+			data.type = this.type;
+			if (this.name !== '') data.name = this.name;
+			if (Object.keys(this.userData).length > 0) data.userData = this.userData;
 
-	function Texture( image, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {
+			if (this.parameters !== undefined) {
+				const parameters = this.parameters;
 
-		Object.defineProperty( this, 'id', { value: textureId ++ } );
+				for (const key in parameters) {
+					if (parameters[key] !== undefined) data[key] = parameters[key];
+				}
 
-		this.uuid = _Math.generateUUID();
+				return data;
+			} // for simplicity the code assumes attributes are not shared across geometries, see #15811
 
-		this.name = '';
 
-		this.image = image !== undefined ? image : Texture.DEFAULT_IMAGE;
-		this.mipmaps = [];
+			data.data = {
+				attributes: {}
+			};
+			const index = this.index;
 
-		this.mapping = mapping !== undefined ? mapping : Texture.DEFAULT_MAPPING;
+			if (index !== null) {
+				data.data.index = {
+					type: index.array.constructor.name,
+					array: Array.prototype.slice.call(index.array)
+				};
+			}
 
-		this.wrapS = wrapS !== undefined ? wrapS : ClampToEdgeWrapping;
-		this.wrapT = wrapT !== undefined ? wrapT : ClampToEdgeWrapping;
+			const attributes = this.attributes;
 
-		this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
-		this.minFilter = minFilter !== undefined ? minFilter : LinearMipMapLinearFilter;
+			for (const key in attributes) {
+				const attribute = attributes[key];
+				data.data.attributes[key] = attribute.toJSON(data.data);
+			}
 
-		this.anisotropy = anisotropy !== undefined ? anisotropy : 1;
+			const morphAttributes = {};
+			let hasMorphAttributes = false;
 
-		this.format = format !== undefined ? format : RGBAFormat;
-		this.type = type !== undefined ? type : UnsignedByteType;
+			for (const key in this.morphAttributes) {
+				const attributeArray = this.morphAttributes[key];
+				const array = [];
 
-		this.offset = new Vector2( 0, 0 );
-		this.repeat = new Vector2( 1, 1 );
-		this.center = new Vector2( 0, 0 );
-		this.rotation = 0;
+				for (let i = 0, il = attributeArray.length; i < il; i++) {
+					const attribute = attributeArray[i];
+					array.push(attribute.toJSON(data.data));
+				}
 
-		this.matrixAutoUpdate = true;
-		this.matrix = new Matrix3();
+				if (array.length > 0) {
+					morphAttributes[key] = array;
+					hasMorphAttributes = true;
+				}
+			}
 
-		this.generateMipmaps = true;
-		this.premultiplyAlpha = false;
-		this.flipY = true;
-		this.unpackAlignment = 4;	// valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)
+			if (hasMorphAttributes) {
+				data.data.morphAttributes = morphAttributes;
+				data.data.morphTargetsRelative = this.morphTargetsRelative;
+			}
 
-		// Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.
-		//
-		// Also changing the encoding after already used by a Material will not automatically make the Material
-		// update.  You need to explicitly call Material.needsUpdate to trigger it to recompile.
-		this.encoding = encoding !== undefined ? encoding : LinearEncoding;
+			const groups = this.groups;
 
-		this.version = 0;
-		this.onUpdate = null;
+			if (groups.length > 0) {
+				data.data.groups = JSON.parse(JSON.stringify(groups));
+			}
 
-	}
+			const boundingSphere = this.boundingSphere;
 
-	Texture.DEFAULT_IMAGE = undefined;
-	Texture.DEFAULT_MAPPING = UVMapping;
+			if (boundingSphere !== null) {
+				data.data.boundingSphere = {
+					center: boundingSphere.center.toArray(),
+					radius: boundingSphere.radius
+				};
+			}
 
-	Texture.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+			return data;
+		}
 
-		constructor: Texture,
+		clone() {
+			/*
+			 // Handle primitives
+				 const parameters = this.parameters;
+				 if ( parameters !== undefined ) {
+				 const values = [];
+				 for ( const key in parameters ) {
+				 values.push( parameters[ key ] );
+				 }
+				 const geometry = Object.create( this.constructor.prototype );
+			 this.constructor.apply( geometry, values );
+			 return geometry;
+				 }
+				 return new this.constructor().copy( this );
+			 */
+			return new BufferGeometry().copy(this);
+		}
 
-		isTexture: true,
+		copy(source) {
+			// reset
+			this.index = null;
+			this.attributes = {};
+			this.morphAttributes = {};
+			this.groups = [];
+			this.boundingBox = null;
+			this.boundingSphere = null; // used for storing cloned, shared data
 
-		clone: function () {
+			const data = {}; // name
 
-			return new this.constructor().copy( this );
+			this.name = source.name; // index
 
-		},
+			const index = source.index;
 
-		copy: function ( source ) {
+			if (index !== null) {
+				this.setIndex(index.clone(data));
+			} // attributes
 
-			this.name = source.name;
 
-			this.image = source.image;
-			this.mipmaps = source.mipmaps.slice( 0 );
+			const attributes = source.attributes;
 
-			this.mapping = source.mapping;
+			for (const name in attributes) {
+				const attribute = attributes[name];
+				this.setAttribute(name, attribute.clone(data));
+			} // morph attributes
 
-			this.wrapS = source.wrapS;
-			this.wrapT = source.wrapT;
 
-			this.magFilter = source.magFilter;
-			this.minFilter = source.minFilter;
+			const morphAttributes = source.morphAttributes;
 
-			this.anisotropy = source.anisotropy;
+			for (const name in morphAttributes) {
+				const array = [];
+				const morphAttribute = morphAttributes[name]; // morphAttribute: array of Float32BufferAttributes
 
-			this.format = source.format;
-			this.type = source.type;
+				for (let i = 0, l = morphAttribute.length; i < l; i++) {
+					array.push(morphAttribute[i].clone(data));
+				}
 
-			this.offset.copy( source.offset );
-			this.repeat.copy( source.repeat );
-			this.center.copy( source.center );
-			this.rotation = source.rotation;
+				this.morphAttributes[name] = array;
+			}
 
-			this.matrixAutoUpdate = source.matrixAutoUpdate;
-			this.matrix.copy( source.matrix );
+			this.morphTargetsRelative = source.morphTargetsRelative; // groups
 
-			this.generateMipmaps = source.generateMipmaps;
-			this.premultiplyAlpha = source.premultiplyAlpha;
-			this.flipY = source.flipY;
-			this.unpackAlignment = source.unpackAlignment;
-			this.encoding = source.encoding;
+			const groups = source.groups;
 
-			return this;
+			for (let i = 0, l = groups.length; i < l; i++) {
+				const group = groups[i];
+				this.addGroup(group.start, group.count, group.materialIndex);
+			} // bounding box
 
-		},
 
-		toJSON: function ( meta ) {
+			const boundingBox = source.boundingBox;
 
-			var isRootObject = ( meta === undefined || typeof meta === 'string' );
+			if (boundingBox !== null) {
+				this.boundingBox = boundingBox.clone();
+			} // bounding sphere
 
-			if ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {
 
-				return meta.textures[ this.uuid ];
+			const boundingSphere = source.boundingSphere;
 
-			}
+			if (boundingSphere !== null) {
+				this.boundingSphere = boundingSphere.clone();
+			} // draw range
 
-			function getDataURL( image ) {
 
-				var canvas;
+			this.drawRange.start = source.drawRange.start;
+			this.drawRange.count = source.drawRange.count; // user data
 
-				if ( image instanceof HTMLCanvasElement ) {
+			this.userData = source.userData;
+			return this;
+		}
 
-					canvas = image;
+		dispose() {
+			this.dispatchEvent({
+				type: 'dispose'
+			});
+		}
 
-				} else {
+	}
 
-					canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
-					canvas.width = image.width;
-					canvas.height = image.height;
+	BufferGeometry.prototype.isBufferGeometry = true;
 
-					var context = canvas.getContext( '2d' );
+	const _inverseMatrix$2 = /*@__PURE__*/new Matrix4();
 
-					if ( image instanceof ImageData ) {
+	const _ray$2 = /*@__PURE__*/new Ray();
 
-						context.putImageData( image, 0, 0 );
+	const _sphere$3 = /*@__PURE__*/new Sphere();
 
-					} else {
+	const _vA$1 = /*@__PURE__*/new Vector3();
 
-						context.drawImage( image, 0, 0, image.width, image.height );
+	const _vB$1 = /*@__PURE__*/new Vector3();
 
-					}
+	const _vC$1 = /*@__PURE__*/new Vector3();
 
-				}
+	const _tempA = /*@__PURE__*/new Vector3();
 
-				if ( canvas.width > 2048 || canvas.height > 2048 ) {
+	const _tempB = /*@__PURE__*/new Vector3();
 
-					return canvas.toDataURL( 'image/jpeg', 0.6 );
+	const _tempC = /*@__PURE__*/new Vector3();
 
-				} else {
+	const _morphA = /*@__PURE__*/new Vector3();
 
-					return canvas.toDataURL( 'image/png' );
+	const _morphB = /*@__PURE__*/new Vector3();
 
-				}
+	const _morphC = /*@__PURE__*/new Vector3();
 
-			}
+	const _uvA$1 = /*@__PURE__*/new Vector2();
 
-			var output = {
+	const _uvB$1 = /*@__PURE__*/new Vector2();
 
-				metadata: {
-					version: 4.5,
-					type: 'Texture',
-					generator: 'Texture.toJSON'
-				},
+	const _uvC$1 = /*@__PURE__*/new Vector2();
 
-				uuid: this.uuid,
-				name: this.name,
+	const _intersectionPoint = /*@__PURE__*/new Vector3();
 
-				mapping: this.mapping,
+	const _intersectionPointWorld = /*@__PURE__*/new Vector3();
 
-				repeat: [ this.repeat.x, this.repeat.y ],
-				offset: [ this.offset.x, this.offset.y ],
-				center: [ this.center.x, this.center.y ],
-				rotation: this.rotation,
+	class Mesh extends Object3D {
+		constructor(geometry = new BufferGeometry(), material = new MeshBasicMaterial()) {
+			super();
+			this.type = 'Mesh';
+			this.geometry = geometry;
+			this.material = material;
+			this.updateMorphTargets();
+		}
 
-				wrap: [ this.wrapS, this.wrapT ],
+		copy(source) {
+			super.copy(source);
 
-				format: this.format,
-				minFilter: this.minFilter,
-				magFilter: this.magFilter,
-				anisotropy: this.anisotropy,
+			if (source.morphTargetInfluences !== undefined) {
+				this.morphTargetInfluences = source.morphTargetInfluences.slice();
+			}
 
-				flipY: this.flipY
+			if (source.morphTargetDictionary !== undefined) {
+				this.morphTargetDictionary = Object.assign({}, source.morphTargetDictionary);
+			}
 
-			};
+			this.material = source.material;
+			this.geometry = source.geometry;
+			return this;
+		}
 
-			if ( this.image !== undefined ) {
+		updateMorphTargets() {
+			const geometry = this.geometry;
 
-				// TODO: Move to THREE.Image
+			if (geometry.isBufferGeometry) {
+				const morphAttributes = geometry.morphAttributes;
+				const keys = Object.keys(morphAttributes);
 
-				var image = this.image;
+				if (keys.length > 0) {
+					const morphAttribute = morphAttributes[keys[0]];
 
-				if ( image.uuid === undefined ) {
+					if (morphAttribute !== undefined) {
+						this.morphTargetInfluences = [];
+						this.morphTargetDictionary = {};
 
-					image.uuid = _Math.generateUUID(); // UGH
+						for (let m = 0, ml = morphAttribute.length; m < ml; m++) {
+							const name = morphAttribute[m].name || String(m);
+							this.morphTargetInfluences.push(0);
+							this.morphTargetDictionary[name] = m;
+						}
+					}
+				}
+			} else {
+				const morphTargets = geometry.morphTargets;
 
+				if (morphTargets !== undefined && morphTargets.length > 0) {
+					console.error('THREE.Mesh.updateMorphTargets() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
 				}
+			}
+		}
 
-				if ( ! isRootObject && meta.images[ image.uuid ] === undefined ) {
+		raycast(raycaster, intersects) {
+			const geometry = this.geometry;
+			const material = this.material;
+			const matrixWorld = this.matrixWorld;
+			if (material === undefined) return; // Checking boundingSphere distance to ray
 
-					meta.images[ image.uuid ] = {
-						uuid: image.uuid,
-						url: getDataURL( image )
-					};
+			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
 
-				}
+			_sphere$3.copy(geometry.boundingSphere);
 
-				output.image = image.uuid;
+			_sphere$3.applyMatrix4(matrixWorld);
 
-			}
+			if (raycaster.ray.intersectsSphere(_sphere$3) === false) return; //
 
-			if ( ! isRootObject ) {
+			_inverseMatrix$2.copy(matrixWorld).invert();
 
-				meta.textures[ this.uuid ] = output;
+			_ray$2.copy(raycaster.ray).applyMatrix4(_inverseMatrix$2); // Check boundingBox before continuing
 
+
+			if (geometry.boundingBox !== null) {
+				if (_ray$2.intersectsBox(geometry.boundingBox) === false) return;
 			}
 
-			return output;
+			let intersection;
 
-		},
+			if (geometry.isBufferGeometry) {
+				const index = geometry.index;
+				const position = geometry.attributes.position;
+				const morphPosition = geometry.morphAttributes.position;
+				const morphTargetsRelative = geometry.morphTargetsRelative;
+				const uv = geometry.attributes.uv;
+				const uv2 = geometry.attributes.uv2;
+				const groups = geometry.groups;
+				const drawRange = geometry.drawRange;
 
-		dispose: function () {
+				if (index !== null) {
+					// indexed buffer geometry
+					if (Array.isArray(material)) {
+						for (let i = 0, il = groups.length; i < il; i++) {
+							const group = groups[i];
+							const groupMaterial = material[group.materialIndex];
+							const start = Math.max(group.start, drawRange.start);
+							const end = Math.min(group.start + group.count, drawRange.start + drawRange.count);
 
-			this.dispatchEvent( { type: 'dispose' } );
+							for (let j = start, jl = end; j < jl; j += 3) {
+								const a = index.getX(j);
+								const b = index.getX(j + 1);
+								const c = index.getX(j + 2);
+								intersection = checkBufferGeometryIntersection(this, groupMaterial, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c);
 
-		},
+								if (intersection) {
+									intersection.faceIndex = Math.floor(j / 3); // triangle number in indexed buffer semantics
 
-		transformUv: function ( uv ) {
+									intersection.face.materialIndex = group.materialIndex;
+									intersects.push(intersection);
+								}
+							}
+						}
+					} else {
+						const start = Math.max(0, drawRange.start);
+						const end = Math.min(index.count, drawRange.start + drawRange.count);
 
-			if ( this.mapping !== UVMapping ) return;
+						for (let i = start, il = end; i < il; i += 3) {
+							const a = index.getX(i);
+							const b = index.getX(i + 1);
+							const c = index.getX(i + 2);
+							intersection = checkBufferGeometryIntersection(this, material, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c);
 
-			uv.applyMatrix3( this.matrix );
+							if (intersection) {
+								intersection.faceIndex = Math.floor(i / 3); // triangle number in indexed buffer semantics
 
-			if ( uv.x < 0 || uv.x > 1 ) {
+								intersects.push(intersection);
+							}
+						}
+					}
+				} else if (position !== undefined) {
+					// non-indexed buffer geometry
+					if (Array.isArray(material)) {
+						for (let i = 0, il = groups.length; i < il; i++) {
+							const group = groups[i];
+							const groupMaterial = material[group.materialIndex];
+							const start = Math.max(group.start, drawRange.start);
+							const end = Math.min(group.start + group.count, drawRange.start + drawRange.count);
+
+							for (let j = start, jl = end; j < jl; j += 3) {
+								const a = j;
+								const b = j + 1;
+								const c = j + 2;
+								intersection = checkBufferGeometryIntersection(this, groupMaterial, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c);
+
+								if (intersection) {
+									intersection.faceIndex = Math.floor(j / 3); // triangle number in non-indexed buffer semantics
+
+									intersection.face.materialIndex = group.materialIndex;
+									intersects.push(intersection);
+								}
+							}
+						}
+					} else {
+						const start = Math.max(0, drawRange.start);
+						const end = Math.min(position.count, drawRange.start + drawRange.count);
 
-				switch ( this.wrapS ) {
+						for (let i = start, il = end; i < il; i += 3) {
+							const a = i;
+							const b = i + 1;
+							const c = i + 2;
+							intersection = checkBufferGeometryIntersection(this, material, raycaster, _ray$2, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c);
 
-					case RepeatWrapping:
+							if (intersection) {
+								intersection.faceIndex = Math.floor(i / 3); // triangle number in non-indexed buffer semantics
 
-						uv.x = uv.x - Math.floor( uv.x );
-						break;
+								intersects.push(intersection);
+							}
+						}
+					}
+				}
+			} else if (geometry.isGeometry) {
+				console.error('THREE.Mesh.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+			}
+		}
 
-					case ClampToEdgeWrapping:
+	}
 
-						uv.x = uv.x < 0 ? 0 : 1;
-						break;
+	Mesh.prototype.isMesh = true;
 
-					case MirroredRepeatWrapping:
+	function checkIntersection(object, material, raycaster, ray, pA, pB, pC, point) {
+		let intersect;
 
-						if ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {
+		if (material.side === BackSide) {
+			intersect = ray.intersectTriangle(pC, pB, pA, true, point);
+		} else {
+			intersect = ray.intersectTriangle(pA, pB, pC, material.side !== DoubleSide, point);
+		}
 
-							uv.x = Math.ceil( uv.x ) - uv.x;
+		if (intersect === null) return null;
 
-						} else {
+		_intersectionPointWorld.copy(point);
 
-							uv.x = uv.x - Math.floor( uv.x );
+		_intersectionPointWorld.applyMatrix4(object.matrixWorld);
 
-						}
-						break;
+		const distance = raycaster.ray.origin.distanceTo(_intersectionPointWorld);
+		if (distance < raycaster.near || distance > raycaster.far) return null;
+		return {
+			distance: distance,
+			point: _intersectionPointWorld.clone(),
+			object: object
+		};
+	}
 
-				}
+	function checkBufferGeometryIntersection(object, material, raycaster, ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c) {
+		_vA$1.fromBufferAttribute(position, a);
 
-			}
+		_vB$1.fromBufferAttribute(position, b);
 
-			if ( uv.y < 0 || uv.y > 1 ) {
+		_vC$1.fromBufferAttribute(position, c);
 
-				switch ( this.wrapT ) {
+		const morphInfluences = object.morphTargetInfluences;
 
-					case RepeatWrapping:
+		if (material.morphTargets && morphPosition && morphInfluences) {
+			_morphA.set(0, 0, 0);
 
-						uv.y = uv.y - Math.floor( uv.y );
-						break;
+			_morphB.set(0, 0, 0);
 
-					case ClampToEdgeWrapping:
+			_morphC.set(0, 0, 0);
 
-						uv.y = uv.y < 0 ? 0 : 1;
-						break;
+			for (let i = 0, il = morphPosition.length; i < il; i++) {
+				const influence = morphInfluences[i];
+				const morphAttribute = morphPosition[i];
+				if (influence === 0) continue;
 
-					case MirroredRepeatWrapping:
+				_tempA.fromBufferAttribute(morphAttribute, a);
 
-						if ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {
+				_tempB.fromBufferAttribute(morphAttribute, b);
 
-							uv.y = Math.ceil( uv.y ) - uv.y;
+				_tempC.fromBufferAttribute(morphAttribute, c);
 
-						} else {
+				if (morphTargetsRelative) {
+					_morphA.addScaledVector(_tempA, influence);
 
-							uv.y = uv.y - Math.floor( uv.y );
+					_morphB.addScaledVector(_tempB, influence);
 
-						}
-						break;
+					_morphC.addScaledVector(_tempC, influence);
+				} else {
+					_morphA.addScaledVector(_tempA.sub(_vA$1), influence);
 
-				}
+					_morphB.addScaledVector(_tempB.sub(_vB$1), influence);
 
+					_morphC.addScaledVector(_tempC.sub(_vC$1), influence);
+				}
 			}
 
-			if ( this.flipY ) {
+			_vA$1.add(_morphA);
 
-				uv.y = 1 - uv.y;
+			_vB$1.add(_morphB);
 
-			}
+			_vC$1.add(_morphC);
+		}
 
+		if (object.isSkinnedMesh) {
+			object.boneTransform(a, _vA$1);
+			object.boneTransform(b, _vB$1);
+			object.boneTransform(c, _vC$1);
 		}
 
-	} );
+		const intersection = checkIntersection(object, material, raycaster, ray, _vA$1, _vB$1, _vC$1, _intersectionPoint);
 
-	Object.defineProperty( Texture.prototype, "needsUpdate", {
+		if (intersection) {
+			if (uv) {
+				_uvA$1.fromBufferAttribute(uv, a);
 
-		set: function ( value ) {
+				_uvB$1.fromBufferAttribute(uv, b);
 
-			if ( value === true ) this.version ++;
+				_uvC$1.fromBufferAttribute(uv, c);
 
-		}
+				intersection.uv = Triangle.getUV(_intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2());
+			}
 
-	} );
+			if (uv2) {
+				_uvA$1.fromBufferAttribute(uv2, a);
 
-	/**
-	 * @author supereggbert / http://www.paulbrunt.co.uk/
-	 * @author philogb / http://blog.thejit.org/
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author egraether / http://egraether.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
+				_uvB$1.fromBufferAttribute(uv2, b);
+
+				_uvC$1.fromBufferAttribute(uv2, c);
 
-	function Vector4( x, y, z, w ) {
+				intersection.uv2 = Triangle.getUV(_intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2());
+			}
 
-		this.x = x || 0;
-		this.y = y || 0;
-		this.z = z || 0;
-		this.w = ( w !== undefined ) ? w : 1;
+			const face = {
+				a: a,
+				b: b,
+				c: c,
+				normal: new Vector3(),
+				materialIndex: 0
+			};
+			Triangle.getNormal(_vA$1, _vB$1, _vC$1, face.normal);
+			intersection.face = face;
+		}
 
+		return intersection;
 	}
 
-	Object.assign( Vector4.prototype, {
+	class BoxGeometry extends BufferGeometry {
+		constructor(width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1) {
+			super();
+			this.type = 'BoxGeometry';
+			this.parameters = {
+				width: width,
+				height: height,
+				depth: depth,
+				widthSegments: widthSegments,
+				heightSegments: heightSegments,
+				depthSegments: depthSegments
+			};
+			const scope = this; // segments
 
-		isVector4: true,
+			widthSegments = Math.floor(widthSegments);
+			heightSegments = Math.floor(heightSegments);
+			depthSegments = Math.floor(depthSegments); // buffers
 
-		set: function ( x, y, z, w ) {
+			const indices = [];
+			const vertices = [];
+			const normals = [];
+			const uvs = []; // helper variables
 
-			this.x = x;
-			this.y = y;
-			this.z = z;
-			this.w = w;
+			let numberOfVertices = 0;
+			let groupStart = 0; // build each side of the box geometry
 
-			return this;
+			buildPlane('z', 'y', 'x', -1, -1, depth, height, width, depthSegments, heightSegments, 0); // px
 
-		},
+			buildPlane('z', 'y', 'x', 1, -1, depth, height, -width, depthSegments, heightSegments, 1); // nx
 
-		setScalar: function ( scalar ) {
+			buildPlane('x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2); // py
 
-			this.x = scalar;
-			this.y = scalar;
-			this.z = scalar;
-			this.w = scalar;
+			buildPlane('x', 'z', 'y', 1, -1, width, depth, -height, widthSegments, depthSegments, 3); // ny
 
-			return this;
+			buildPlane('x', 'y', 'z', 1, -1, width, height, depth, widthSegments, heightSegments, 4); // pz
 
-		},
+			buildPlane('x', 'y', 'z', -1, -1, width, height, -depth, widthSegments, heightSegments, 5); // nz
+			// build geometry
 
-		setX: function ( x ) {
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
 
-			this.x = x;
+			function buildPlane(u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex) {
+				const segmentWidth = width / gridX;
+				const segmentHeight = height / gridY;
+				const widthHalf = width / 2;
+				const heightHalf = height / 2;
+				const depthHalf = depth / 2;
+				const gridX1 = gridX + 1;
+				const gridY1 = gridY + 1;
+				let vertexCounter = 0;
+				let groupCount = 0;
+				const vector = new Vector3(); // generate vertices, normals and uvs
 
-			return this;
+				for (let iy = 0; iy < gridY1; iy++) {
+					const y = iy * segmentHeight - heightHalf;
 
-		},
+					for (let ix = 0; ix < gridX1; ix++) {
+						const x = ix * segmentWidth - widthHalf; // set values to correct vector component
 
-		setY: function ( y ) {
+						vector[u] = x * udir;
+						vector[v] = y * vdir;
+						vector[w] = depthHalf; // now apply vector to vertex buffer
 
-			this.y = y;
+						vertices.push(vector.x, vector.y, vector.z); // set values to correct vector component
 
-			return this;
+						vector[u] = 0;
+						vector[v] = 0;
+						vector[w] = depth > 0 ? 1 : -1; // now apply vector to normal buffer
 
-		},
+						normals.push(vector.x, vector.y, vector.z); // uvs
 
-		setZ: function ( z ) {
+						uvs.push(ix / gridX);
+						uvs.push(1 - iy / gridY); // counters
 
-			this.z = z;
+						vertexCounter += 1;
+					}
+				} // indices
+				// 1. you need three indices to draw a single face
+				// 2. a single segment consists of two faces
+				// 3. so we need to generate six (2*3) indices per segment
 
-			return this;
 
-		},
+				for (let iy = 0; iy < gridY; iy++) {
+					for (let ix = 0; ix < gridX; ix++) {
+						const a = numberOfVertices + ix + gridX1 * iy;
+						const b = numberOfVertices + ix + gridX1 * (iy + 1);
+						const c = numberOfVertices + (ix + 1) + gridX1 * (iy + 1);
+						const d = numberOfVertices + (ix + 1) + gridX1 * iy; // faces
 
-		setW: function ( w ) {
+						indices.push(a, b, d);
+						indices.push(b, c, d); // increase counter
 
-			this.w = w;
+						groupCount += 6;
+					}
+				} // add a group to the geometry. this will ensure multi material support
 
-			return this;
 
-		},
+				scope.addGroup(groupStart, groupCount, materialIndex); // calculate new start value for groups
 
-		setComponent: function ( index, value ) {
+				groupStart += groupCount; // update total number of vertices
 
-			switch ( index ) {
+				numberOfVertices += vertexCounter;
+			}
+		}
 
-				case 0: this.x = value; break;
-				case 1: this.y = value; break;
-				case 2: this.z = value; break;
-				case 3: this.w = value; break;
-				default: throw new Error( 'index is out of range: ' + index );
+		static fromJSON(data) {
+			return new BoxGeometry(data.width, data.height, data.depth, data.widthSegments, data.heightSegments, data.depthSegments);
+		}
 
-			}
+	}
 
-			return this;
+	/**
+	 * Uniform Utilities
+	 */
+	function cloneUniforms(src) {
+		const dst = {};
 
-		},
+		for (const u in src) {
+			dst[u] = {};
 
-		getComponent: function ( index ) {
+			for (const p in src[u]) {
+				const property = src[u][p];
+
+				if (property && (property.isColor || property.isMatrix3 || property.isMatrix4 || property.isVector2 || property.isVector3 || property.isVector4 || property.isTexture || property.isQuaternion)) {
+					dst[u][p] = property.clone();
+				} else if (Array.isArray(property)) {
+					dst[u][p] = property.slice();
+				} else {
+					dst[u][p] = property;
+				}
+			}
+		}
 
-			switch ( index ) {
+		return dst;
+	}
+	function mergeUniforms(uniforms) {
+		const merged = {};
 
-				case 0: return this.x;
-				case 1: return this.y;
-				case 2: return this.z;
-				case 3: return this.w;
-				default: throw new Error( 'index is out of range: ' + index );
+		for (let u = 0; u < uniforms.length; u++) {
+			const tmp = cloneUniforms(uniforms[u]);
 
+			for (const p in tmp) {
+				merged[p] = tmp[p];
 			}
+		}
 
-		},
+		return merged;
+	} // Legacy
 
-		clone: function () {
+	const UniformsUtils = {
+		clone: cloneUniforms,
+		merge: mergeUniforms
+	};
 
-			return new this.constructor( this.x, this.y, this.z, this.w );
+	var default_vertex = "void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";
 
-		},
+	var default_fragment = "void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";
 
-		copy: function ( v ) {
+	/**
+	 * parameters = {
+	 *	defines: { "label" : "value" },
+	 *	uniforms: { "parameter1": { value: 1.0 }, "parameter2": { value2: 2 } },
+	 *
+	 *	fragmentShader: <string>,
+	 *	vertexShader: <string>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	lights: <bool>,
+	 *
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>
+	 * }
+	 */
 
-			this.x = v.x;
-			this.y = v.y;
-			this.z = v.z;
-			this.w = ( v.w !== undefined ) ? v.w : 1;
+	class ShaderMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'ShaderMaterial';
+			this.defines = {};
+			this.uniforms = {};
+			this.vertexShader = default_vertex;
+			this.fragmentShader = default_fragment;
+			this.linewidth = 1;
+			this.wireframe = false;
+			this.wireframeLinewidth = 1;
+			this.fog = false; // set to use scene fog
+
+			this.lights = false; // set to use scene lights
+
+			this.clipping = false; // set to use user-defined clipping planes
+
+			this.morphTargets = false; // set to use morph targets
+
+			this.morphNormals = false; // set to use morph normals
+
+			this.extensions = {
+				derivatives: false,
+				// set to use derivatives
+				fragDepth: false,
+				// set to use fragment depth values
+				drawBuffers: false,
+				// set to use draw buffers
+				shaderTextureLOD: false // set to use shader texture LOD
+
+			}; // When rendered geometry doesn't include these attributes but the material does,
+			// use these default values in WebGL. This avoids errors when buffer data is missing.
+
+			this.defaultAttributeValues = {
+				'color': [1, 1, 1],
+				'uv': [0, 0],
+				'uv2': [0, 0]
+			};
+			this.index0AttributeName = undefined;
+			this.uniformsNeedUpdate = false;
+			this.glslVersion = null;
 
-			return this;
+			if (parameters !== undefined) {
+				if (parameters.attributes !== undefined) {
+					console.error('THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.');
+				}
 
-		},
+				this.setValues(parameters);
+			}
+		}
 
-		add: function ( v, w ) {
+		copy(source) {
+			super.copy(source);
+			this.fragmentShader = source.fragmentShader;
+			this.vertexShader = source.vertexShader;
+			this.uniforms = cloneUniforms(source.uniforms);
+			this.defines = Object.assign({}, source.defines);
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.lights = source.lights;
+			this.clipping = source.clipping;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			this.extensions = Object.assign({}, source.extensions);
+			this.glslVersion = source.glslVersion;
+			return this;
+		}
 
-			if ( w !== undefined ) {
+		toJSON(meta) {
+			const data = super.toJSON(meta);
+			data.glslVersion = this.glslVersion;
+			data.uniforms = {};
 
-				console.warn( 'THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
-				return this.addVectors( v, w );
+			for (const name in this.uniforms) {
+				const uniform = this.uniforms[name];
+				const value = uniform.value;
 
+				if (value && value.isTexture) {
+					data.uniforms[name] = {
+						type: 't',
+						value: value.toJSON(meta).uuid
+					};
+				} else if (value && value.isColor) {
+					data.uniforms[name] = {
+						type: 'c',
+						value: value.getHex()
+					};
+				} else if (value && value.isVector2) {
+					data.uniforms[name] = {
+						type: 'v2',
+						value: value.toArray()
+					};
+				} else if (value && value.isVector3) {
+					data.uniforms[name] = {
+						type: 'v3',
+						value: value.toArray()
+					};
+				} else if (value && value.isVector4) {
+					data.uniforms[name] = {
+						type: 'v4',
+						value: value.toArray()
+					};
+				} else if (value && value.isMatrix3) {
+					data.uniforms[name] = {
+						type: 'm3',
+						value: value.toArray()
+					};
+				} else if (value && value.isMatrix4) {
+					data.uniforms[name] = {
+						type: 'm4',
+						value: value.toArray()
+					};
+				} else {
+					data.uniforms[name] = {
+						value: value
+					}; // note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far
+				}
 			}
 
-			this.x += v.x;
-			this.y += v.y;
-			this.z += v.z;
-			this.w += v.w;
+			if (Object.keys(this.defines).length > 0) data.defines = this.defines;
+			data.vertexShader = this.vertexShader;
+			data.fragmentShader = this.fragmentShader;
+			const extensions = {};
 
-			return this;
+			for (const key in this.extensions) {
+				if (this.extensions[key] === true) extensions[key] = true;
+			}
 
-		},
+			if (Object.keys(extensions).length > 0) data.extensions = extensions;
+			return data;
+		}
 
-		addScalar: function ( s ) {
+	}
 
-			this.x += s;
-			this.y += s;
-			this.z += s;
-			this.w += s;
+	ShaderMaterial.prototype.isShaderMaterial = true;
 
+	class Camera extends Object3D {
+		constructor() {
+			super();
+			this.type = 'Camera';
+			this.matrixWorldInverse = new Matrix4();
+			this.projectionMatrix = new Matrix4();
+			this.projectionMatrixInverse = new Matrix4();
+		}
+
+		copy(source, recursive) {
+			super.copy(source, recursive);
+			this.matrixWorldInverse.copy(source.matrixWorldInverse);
+			this.projectionMatrix.copy(source.projectionMatrix);
+			this.projectionMatrixInverse.copy(source.projectionMatrixInverse);
 			return this;
+		}
 
-		},
+		getWorldDirection(target) {
+			this.updateWorldMatrix(true, false);
+			const e = this.matrixWorld.elements;
+			return target.set(-e[8], -e[9], -e[10]).normalize();
+		}
 
-		addVectors: function ( a, b ) {
+		updateMatrixWorld(force) {
+			super.updateMatrixWorld(force);
+			this.matrixWorldInverse.copy(this.matrixWorld).invert();
+		}
 
-			this.x = a.x + b.x;
-			this.y = a.y + b.y;
-			this.z = a.z + b.z;
-			this.w = a.w + b.w;
+		updateWorldMatrix(updateParents, updateChildren) {
+			super.updateWorldMatrix(updateParents, updateChildren);
+			this.matrixWorldInverse.copy(this.matrixWorld).invert();
+		}
 
-			return this;
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-		},
+	}
 
-		addScaledVector: function ( v, s ) {
+	Camera.prototype.isCamera = true;
 
-			this.x += v.x * s;
-			this.y += v.y * s;
-			this.z += v.z * s;
-			this.w += v.w * s;
+	class PerspectiveCamera extends Camera {
+		constructor(fov = 50, aspect = 1, near = 0.1, far = 2000) {
+			super();
+			this.type = 'PerspectiveCamera';
+			this.fov = fov;
+			this.zoom = 1;
+			this.near = near;
+			this.far = far;
+			this.focus = 10;
+			this.aspect = aspect;
+			this.view = null;
+			this.filmGauge = 35; // width of the film (default in millimeters)
 
-			return this;
+			this.filmOffset = 0; // horizontal film offset (same unit as gauge)
 
-		},
+			this.updateProjectionMatrix();
+		}
 
-		sub: function ( v, w ) {
+		copy(source, recursive) {
+			super.copy(source, recursive);
+			this.fov = source.fov;
+			this.zoom = source.zoom;
+			this.near = source.near;
+			this.far = source.far;
+			this.focus = source.focus;
+			this.aspect = source.aspect;
+			this.view = source.view === null ? null : Object.assign({}, source.view);
+			this.filmGauge = source.filmGauge;
+			this.filmOffset = source.filmOffset;
+			return this;
+		}
+		/**
+		 * Sets the FOV by focal length in respect to the current .filmGauge.
+		 *
+		 * The default film gauge is 35, so that the focal length can be specified for
+		 * a 35mm (full frame) camera.
+		 *
+		 * Values for focal length and film gauge must have the same unit.
+		 */
 
-			if ( w !== undefined ) {
 
-				console.warn( 'THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
-				return this.subVectors( v, w );
+		setFocalLength(focalLength) {
+			/** see {@link http://www.bobatkins.com/photography/technical/field_of_view.html} */
+			const vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;
+			this.fov = RAD2DEG * 2 * Math.atan(vExtentSlope);
+			this.updateProjectionMatrix();
+		}
+		/**
+		 * Calculates the focal length from the current .fov and .filmGauge.
+		 */
 
-			}
 
-			this.x -= v.x;
-			this.y -= v.y;
-			this.z -= v.z;
-			this.w -= v.w;
+		getFocalLength() {
+			const vExtentSlope = Math.tan(DEG2RAD * 0.5 * this.fov);
+			return 0.5 * this.getFilmHeight() / vExtentSlope;
+		}
 
-			return this;
+		getEffectiveFOV() {
+			return RAD2DEG * 2 * Math.atan(Math.tan(DEG2RAD * 0.5 * this.fov) / this.zoom);
+		}
 
-		},
+		getFilmWidth() {
+			// film not completely covered in portrait format (aspect < 1)
+			return this.filmGauge * Math.min(this.aspect, 1);
+		}
 
-		subScalar: function ( s ) {
+		getFilmHeight() {
+			// film not completely covered in landscape format (aspect > 1)
+			return this.filmGauge / Math.max(this.aspect, 1);
+		}
+		/**
+		 * Sets an offset in a larger frustum. This is useful for multi-window or
+		 * multi-monitor/multi-machine setups.
+		 *
+		 * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
+		 * the monitors are in grid like this
+		 *
+		 *	 +---+---+---+
+		 *	 | A | B | C |
+		 *	 +---+---+---+
+		 *	 | D | E | F |
+		 *	 +---+---+---+
+		 *
+		 * then for each monitor you would call it like this
+		 *
+		 *	 const w = 1920;
+		 *	 const h = 1080;
+		 *	 const fullWidth = w * 3;
+		 *	 const fullHeight = h * 2;
+		 *
+		 *	 --A--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
+		 *	 --B--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
+		 *	 --C--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
+		 *	 --D--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
+		 *	 --E--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
+		 *	 --F--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
+		 *
+		 *	 Note there is no reason monitors have to be the same size or in a grid.
+		 */
 
-			this.x -= s;
-			this.y -= s;
-			this.z -= s;
-			this.w -= s;
 
-			return this;
+		setViewOffset(fullWidth, fullHeight, x, y, width, height) {
+			this.aspect = fullWidth / fullHeight;
 
-		},
+			if (this.view === null) {
+				this.view = {
+					enabled: true,
+					fullWidth: 1,
+					fullHeight: 1,
+					offsetX: 0,
+					offsetY: 0,
+					width: 1,
+					height: 1
+				};
+			}
 
-		subVectors: function ( a, b ) {
+			this.view.enabled = true;
+			this.view.fullWidth = fullWidth;
+			this.view.fullHeight = fullHeight;
+			this.view.offsetX = x;
+			this.view.offsetY = y;
+			this.view.width = width;
+			this.view.height = height;
+			this.updateProjectionMatrix();
+		}
 
-			this.x = a.x - b.x;
-			this.y = a.y - b.y;
-			this.z = a.z - b.z;
-			this.w = a.w - b.w;
+		clearViewOffset() {
+			if (this.view !== null) {
+				this.view.enabled = false;
+			}
 
-			return this;
+			this.updateProjectionMatrix();
+		}
 
-		},
+		updateProjectionMatrix() {
+			const near = this.near;
+			let top = near * Math.tan(DEG2RAD * 0.5 * this.fov) / this.zoom;
+			let height = 2 * top;
+			let width = this.aspect * height;
+			let left = -0.5 * width;
+			const view = this.view;
 
-		multiplyScalar: function ( scalar ) {
+			if (this.view !== null && this.view.enabled) {
+				const fullWidth = view.fullWidth,
+							fullHeight = view.fullHeight;
+				left += view.offsetX * width / fullWidth;
+				top -= view.offsetY * height / fullHeight;
+				width *= view.width / fullWidth;
+				height *= view.height / fullHeight;
+			}
 
-			this.x *= scalar;
-			this.y *= scalar;
-			this.z *= scalar;
-			this.w *= scalar;
+			const skew = this.filmOffset;
+			if (skew !== 0) left += near * skew / this.getFilmWidth();
+			this.projectionMatrix.makePerspective(left, left + width, top, top - height, near, this.far);
+			this.projectionMatrixInverse.copy(this.projectionMatrix).invert();
+		}
 
-			return this;
+		toJSON(meta) {
+			const data = super.toJSON(meta);
+			data.object.fov = this.fov;
+			data.object.zoom = this.zoom;
+			data.object.near = this.near;
+			data.object.far = this.far;
+			data.object.focus = this.focus;
+			data.object.aspect = this.aspect;
+			if (this.view !== null) data.object.view = Object.assign({}, this.view);
+			data.object.filmGauge = this.filmGauge;
+			data.object.filmOffset = this.filmOffset;
+			return data;
+		}
 
-		},
+	}
 
-		applyMatrix4: function ( m ) {
+	PerspectiveCamera.prototype.isPerspectiveCamera = true;
 
-			var x = this.x, y = this.y, z = this.z, w = this.w;
-			var e = m.elements;
+	const fov = 90,
+				aspect = 1;
 
-			this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;
-			this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;
-			this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;
-			this.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;
+	class CubeCamera extends Object3D {
+		constructor(near, far, renderTarget) {
+			super();
+			this.type = 'CubeCamera';
 
-			return this;
+			if (renderTarget.isWebGLCubeRenderTarget !== true) {
+				console.error('THREE.CubeCamera: The constructor now expects an instance of WebGLCubeRenderTarget as third parameter.');
+				return;
+			}
 
-		},
+			this.renderTarget = renderTarget;
+			const cameraPX = new PerspectiveCamera(fov, aspect, near, far);
+			cameraPX.layers = this.layers;
+			cameraPX.up.set(0, -1, 0);
+			cameraPX.lookAt(new Vector3(1, 0, 0));
+			this.add(cameraPX);
+			const cameraNX = new PerspectiveCamera(fov, aspect, near, far);
+			cameraNX.layers = this.layers;
+			cameraNX.up.set(0, -1, 0);
+			cameraNX.lookAt(new Vector3(-1, 0, 0));
+			this.add(cameraNX);
+			const cameraPY = new PerspectiveCamera(fov, aspect, near, far);
+			cameraPY.layers = this.layers;
+			cameraPY.up.set(0, 0, 1);
+			cameraPY.lookAt(new Vector3(0, 1, 0));
+			this.add(cameraPY);
+			const cameraNY = new PerspectiveCamera(fov, aspect, near, far);
+			cameraNY.layers = this.layers;
+			cameraNY.up.set(0, 0, -1);
+			cameraNY.lookAt(new Vector3(0, -1, 0));
+			this.add(cameraNY);
+			const cameraPZ = new PerspectiveCamera(fov, aspect, near, far);
+			cameraPZ.layers = this.layers;
+			cameraPZ.up.set(0, -1, 0);
+			cameraPZ.lookAt(new Vector3(0, 0, 1));
+			this.add(cameraPZ);
+			const cameraNZ = new PerspectiveCamera(fov, aspect, near, far);
+			cameraNZ.layers = this.layers;
+			cameraNZ.up.set(0, -1, 0);
+			cameraNZ.lookAt(new Vector3(0, 0, -1));
+			this.add(cameraNZ);
+		}
+
+		update(renderer, scene) {
+			if (this.parent === null) this.updateMatrixWorld();
+			const renderTarget = this.renderTarget;
+			const [cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ] = this.children;
+			const currentXrEnabled = renderer.xr.enabled;
+			const currentRenderTarget = renderer.getRenderTarget();
+			renderer.xr.enabled = false;
+			const generateMipmaps = renderTarget.texture.generateMipmaps;
+			renderTarget.texture.generateMipmaps = false;
+			renderer.setRenderTarget(renderTarget, 0);
+			renderer.render(scene, cameraPX);
+			renderer.setRenderTarget(renderTarget, 1);
+			renderer.render(scene, cameraNX);
+			renderer.setRenderTarget(renderTarget, 2);
+			renderer.render(scene, cameraPY);
+			renderer.setRenderTarget(renderTarget, 3);
+			renderer.render(scene, cameraNY);
+			renderer.setRenderTarget(renderTarget, 4);
+			renderer.render(scene, cameraPZ);
+			renderTarget.texture.generateMipmaps = generateMipmaps;
+			renderer.setRenderTarget(renderTarget, 5);
+			renderer.render(scene, cameraNZ);
+			renderer.setRenderTarget(currentRenderTarget);
+			renderer.xr.enabled = currentXrEnabled;
+		}
 
-		divideScalar: function ( scalar ) {
+	}
 
-			return this.multiplyScalar( 1 / scalar );
+	class CubeTexture extends Texture {
+		constructor(images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding) {
+			images = images !== undefined ? images : [];
+			mapping = mapping !== undefined ? mapping : CubeReflectionMapping;
+			format = format !== undefined ? format : RGBFormat;
+			super(images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding); // Why CubeTexture._needsFlipEnvMap is necessary:
+			//
+			// By convention -- likely based on the RenderMan spec from the 1990's -- cube maps are specified by WebGL (and three.js)
+			// in a coordinate system in which positive-x is to the right when looking up the positive-z axis -- in other words,
+			// in a left-handed coordinate system. By continuing this convention, preexisting cube maps continued to render correctly.
+			// three.js uses a right-handed coordinate system. So environment maps used in three.js appear to have px and nx swapped
+			// and the flag _needsFlipEnvMap controls this conversion. The flip is not required (and thus _needsFlipEnvMap is set to false)
+			// when using WebGLCubeRenderTarget.texture as a cube texture.
 
-		},
+			this._needsFlipEnvMap = true;
+			this.flipY = false;
+		}
 
-		setAxisAngleFromQuaternion: function ( q ) {
+		get images() {
+			return this.image;
+		}
 
-			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm
+		set images(value) {
+			this.image = value;
+		}
 
-			// q is assumed to be normalized
+	}
 
-			this.w = 2 * Math.acos( q.w );
+	CubeTexture.prototype.isCubeTexture = true;
 
-			var s = Math.sqrt( 1 - q.w * q.w );
+	class WebGLCubeRenderTarget extends WebGLRenderTarget {
+		constructor(size, options, dummy) {
+			if (Number.isInteger(options)) {
+				console.warn('THREE.WebGLCubeRenderTarget: constructor signature is now WebGLCubeRenderTarget( size, options )');
+				options = dummy;
+			}
+
+			super(size, size, options);
+			options = options || {};
+			this.texture = new CubeTexture(undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding);
+			this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
+			this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;
+			this.texture._needsFlipEnvMap = false;
+		}
+
+		fromEquirectangularTexture(renderer, texture) {
+			this.texture.type = texture.type;
+			this.texture.format = RGBAFormat; // see #18859
+
+			this.texture.encoding = texture.encoding;
+			this.texture.generateMipmaps = texture.generateMipmaps;
+			this.texture.minFilter = texture.minFilter;
+			this.texture.magFilter = texture.magFilter;
+			const shader = {
+				uniforms: {
+					tEquirect: {
+						value: null
+					}
+				},
+				vertexShader:
+				/* glsl */
+				`
 
-			if ( s < 0.0001 ) {
+				varying vec3 vWorldDirection;
 
-				this.x = 1;
-				this.y = 0;
-				this.z = 0;
+				vec3 transformDirection( in vec3 dir, in mat4 matrix ) {
 
-			} else {
+					return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );
 
-				this.x = q.x / s;
-				this.y = q.y / s;
-				this.z = q.z / s;
+				}
 
-			}
+				void main() {
 
-			return this;
+					vWorldDirection = transformDirection( position, modelMatrix );
 
-		},
+					#include <begin_vertex>
+					#include <project_vertex>
 
-		setAxisAngleFromRotationMatrix: function ( m ) {
+				}
+			`,
+				fragmentShader:
+				/* glsl */
+				`
 
-			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm
+				uniform sampler2D tEquirect;
 
-			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+				varying vec3 vWorldDirection;
 
-			var angle, x, y, z,		// variables for result
-				epsilon = 0.01,		// margin to allow for rounding errors
-				epsilon2 = 0.1,		// margin to distinguish between 0 and 180 degrees
+				#include <common>
 
-				te = m.elements,
+				void main() {
 
-				m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
-				m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
-				m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
+					vec3 direction = normalize( vWorldDirection );
 
-			if ( ( Math.abs( m12 - m21 ) < epsilon ) &&
-			     ( Math.abs( m13 - m31 ) < epsilon ) &&
-			     ( Math.abs( m23 - m32 ) < epsilon ) ) {
+					vec2 sampleUV = equirectUv( direction );
 
-				// singularity found
-				// first check for identity matrix which must have +1 for all terms
-				// in leading diagonal and zero in other terms
-
-				if ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&
-				     ( Math.abs( m13 + m31 ) < epsilon2 ) &&
-				     ( Math.abs( m23 + m32 ) < epsilon2 ) &&
-				     ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {
-
-					// this singularity is identity matrix so angle = 0
-
-					this.set( 1, 0, 0, 0 );
-
-					return this; // zero angle, arbitrary axis
+					gl_FragColor = texture2D( tEquirect, sampleUV );
 
 				}
+			`
+			};
+			const geometry = new BoxGeometry(5, 5, 5);
+			const material = new ShaderMaterial({
+				name: 'CubemapFromEquirect',
+				uniforms: cloneUniforms(shader.uniforms),
+				vertexShader: shader.vertexShader,
+				fragmentShader: shader.fragmentShader,
+				side: BackSide,
+				blending: NoBlending
+			});
+			material.uniforms.tEquirect.value = texture;
+			const mesh = new Mesh(geometry, material);
+			const currentMinFilter = texture.minFilter; // Avoid blurred poles
 
-				// otherwise this singularity is angle = 180
+			if (texture.minFilter === LinearMipmapLinearFilter) texture.minFilter = LinearFilter;
+			const camera = new CubeCamera(1, 10, this);
+			camera.update(renderer, mesh);
+			texture.minFilter = currentMinFilter;
+			mesh.geometry.dispose();
+			mesh.material.dispose();
+			return this;
+		}
 
-				angle = Math.PI;
+		clear(renderer, color, depth, stencil) {
+			const currentRenderTarget = renderer.getRenderTarget();
 
-				var xx = ( m11 + 1 ) / 2;
-				var yy = ( m22 + 1 ) / 2;
-				var zz = ( m33 + 1 ) / 2;
-				var xy = ( m12 + m21 ) / 4;
-				var xz = ( m13 + m31 ) / 4;
-				var yz = ( m23 + m32 ) / 4;
+			for (let i = 0; i < 6; i++) {
+				renderer.setRenderTarget(this, i);
+				renderer.clear(color, depth, stencil);
+			}
 
-				if ( ( xx > yy ) && ( xx > zz ) ) {
+			renderer.setRenderTarget(currentRenderTarget);
+		}
 
-					// m11 is the largest diagonal term
+	}
 
-					if ( xx < epsilon ) {
+	WebGLCubeRenderTarget.prototype.isWebGLCubeRenderTarget = true;
 
-						x = 0;
-						y = 0.707106781;
-						z = 0.707106781;
+	const _vector1 = /*@__PURE__*/new Vector3();
 
-					} else {
+	const _vector2 = /*@__PURE__*/new Vector3();
 
-						x = Math.sqrt( xx );
-						y = xy / x;
-						z = xz / x;
+	const _normalMatrix = /*@__PURE__*/new Matrix3();
 
-					}
+	class Plane {
+		constructor(normal = new Vector3(1, 0, 0), constant = 0) {
+			// normal is assumed to be normalized
+			this.normal = normal;
+			this.constant = constant;
+		}
 
-				} else if ( yy > zz ) {
+		set(normal, constant) {
+			this.normal.copy(normal);
+			this.constant = constant;
+			return this;
+		}
 
-					// m22 is the largest diagonal term
+		setComponents(x, y, z, w) {
+			this.normal.set(x, y, z);
+			this.constant = w;
+			return this;
+		}
 
-					if ( yy < epsilon ) {
+		setFromNormalAndCoplanarPoint(normal, point) {
+			this.normal.copy(normal);
+			this.constant = -point.dot(this.normal);
+			return this;
+		}
 
-						x = 0.707106781;
-						y = 0;
-						z = 0.707106781;
+		setFromCoplanarPoints(a, b, c) {
+			const normal = _vector1.subVectors(c, b).cross(_vector2.subVectors(a, b)).normalize(); // Q: should an error be thrown if normal is zero (e.g. degenerate plane)?
 
-					} else {
 
-						y = Math.sqrt( yy );
-						x = xy / y;
-						z = yz / y;
+			this.setFromNormalAndCoplanarPoint(normal, a);
+			return this;
+		}
 
-					}
+		copy(plane) {
+			this.normal.copy(plane.normal);
+			this.constant = plane.constant;
+			return this;
+		}
 
-				} else {
+		normalize() {
+			// Note: will lead to a divide by zero if the plane is invalid.
+			const inverseNormalLength = 1.0 / this.normal.length();
+			this.normal.multiplyScalar(inverseNormalLength);
+			this.constant *= inverseNormalLength;
+			return this;
+		}
 
-					// m33 is the largest diagonal term so base result on this
+		negate() {
+			this.constant *= -1;
+			this.normal.negate();
+			return this;
+		}
 
-					if ( zz < epsilon ) {
+		distanceToPoint(point) {
+			return this.normal.dot(point) + this.constant;
+		}
 
-						x = 0.707106781;
-						y = 0.707106781;
-						z = 0;
+		distanceToSphere(sphere) {
+			return this.distanceToPoint(sphere.center) - sphere.radius;
+		}
 
-					} else {
+		projectPoint(point, target) {
+			return target.copy(this.normal).multiplyScalar(-this.distanceToPoint(point)).add(point);
+		}
 
-						z = Math.sqrt( zz );
-						x = xz / z;
-						y = yz / z;
+		intersectLine(line, target) {
+			const direction = line.delta(_vector1);
+			const denominator = this.normal.dot(direction);
 
-					}
+			if (denominator === 0) {
+				// line is coplanar, return origin
+				if (this.distanceToPoint(line.start) === 0) {
+					return target.copy(line.start);
+				} // Unsure if this is the correct method to handle this case.
 
-				}
 
-				this.set( x, y, z, angle );
+				return null;
+			}
 
-				return this; // return 180 deg rotation
+			const t = -(line.start.dot(this.normal) + this.constant) / denominator;
 
+			if (t < 0 || t > 1) {
+				return null;
 			}
 
-			// as we have reached here there are no singularities so we can handle normally
+			return target.copy(direction).multiplyScalar(t).add(line.start);
+		}
+
+		intersectsLine(line) {
+			// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.
+			const startSign = this.distanceToPoint(line.start);
+			const endSign = this.distanceToPoint(line.end);
+			return startSign < 0 && endSign > 0 || endSign < 0 && startSign > 0;
+		}
+
+		intersectsBox(box) {
+			return box.intersectsPlane(this);
+		}
 
-			var s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +
-			                   ( m13 - m31 ) * ( m13 - m31 ) +
-			                   ( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize
+		intersectsSphere(sphere) {
+			return sphere.intersectsPlane(this);
+		}
 
-			if ( Math.abs( s ) < 0.001 ) s = 1;
+		coplanarPoint(target) {
+			return target.copy(this.normal).multiplyScalar(-this.constant);
+		}
 
-			// prevent divide by zero, should not happen if matrix is orthogonal and should be
-			// caught by singularity test above, but I've left it in just in case
+		applyMatrix4(matrix, optionalNormalMatrix) {
+			const normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix(matrix);
 
-			this.x = ( m32 - m23 ) / s;
-			this.y = ( m13 - m31 ) / s;
-			this.z = ( m21 - m12 ) / s;
-			this.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );
+			const referencePoint = this.coplanarPoint(_vector1).applyMatrix4(matrix);
+			const normal = this.normal.applyMatrix3(normalMatrix).normalize();
+			this.constant = -referencePoint.dot(normal);
+			return this;
+		}
 
+		translate(offset) {
+			this.constant -= offset.dot(this.normal);
 			return this;
+		}
 
-		},
+		equals(plane) {
+			return plane.normal.equals(this.normal) && plane.constant === this.constant;
+		}
 
-		min: function ( v ) {
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-			this.x = Math.min( this.x, v.x );
-			this.y = Math.min( this.y, v.y );
-			this.z = Math.min( this.z, v.z );
-			this.w = Math.min( this.w, v.w );
+	}
 
-			return this;
+	Plane.prototype.isPlane = true;
 
-		},
+	const _sphere$2 = /*@__PURE__*/new Sphere();
 
-		max: function ( v ) {
+	const _vector$7 = /*@__PURE__*/new Vector3();
 
-			this.x = Math.max( this.x, v.x );
-			this.y = Math.max( this.y, v.y );
-			this.z = Math.max( this.z, v.z );
-			this.w = Math.max( this.w, v.w );
+	class Frustum {
+		constructor(p0 = new Plane(), p1 = new Plane(), p2 = new Plane(), p3 = new Plane(), p4 = new Plane(), p5 = new Plane()) {
+			this.planes = [p0, p1, p2, p3, p4, p5];
+		}
 
+		set(p0, p1, p2, p3, p4, p5) {
+			const planes = this.planes;
+			planes[0].copy(p0);
+			planes[1].copy(p1);
+			planes[2].copy(p2);
+			planes[3].copy(p3);
+			planes[4].copy(p4);
+			planes[5].copy(p5);
 			return this;
+		}
 
-		},
-
-		clamp: function ( min, max ) {
+		copy(frustum) {
+			const planes = this.planes;
 
-			// assumes min < max, componentwise
+			for (let i = 0; i < 6; i++) {
+				planes[i].copy(frustum.planes[i]);
+			}
 
-			this.x = Math.max( min.x, Math.min( max.x, this.x ) );
-			this.y = Math.max( min.y, Math.min( max.y, this.y ) );
-			this.z = Math.max( min.z, Math.min( max.z, this.z ) );
-			this.w = Math.max( min.w, Math.min( max.w, this.w ) );
+			return this;
+		}
 
+		setFromProjectionMatrix(m) {
+			const planes = this.planes;
+			const me = m.elements;
+			const me0 = me[0],
+						me1 = me[1],
+						me2 = me[2],
+						me3 = me[3];
+			const me4 = me[4],
+						me5 = me[5],
+						me6 = me[6],
+						me7 = me[7];
+			const me8 = me[8],
+						me9 = me[9],
+						me10 = me[10],
+						me11 = me[11];
+			const me12 = me[12],
+						me13 = me[13],
+						me14 = me[14],
+						me15 = me[15];
+			planes[0].setComponents(me3 - me0, me7 - me4, me11 - me8, me15 - me12).normalize();
+			planes[1].setComponents(me3 + me0, me7 + me4, me11 + me8, me15 + me12).normalize();
+			planes[2].setComponents(me3 + me1, me7 + me5, me11 + me9, me15 + me13).normalize();
+			planes[3].setComponents(me3 - me1, me7 - me5, me11 - me9, me15 - me13).normalize();
+			planes[4].setComponents(me3 - me2, me7 - me6, me11 - me10, me15 - me14).normalize();
+			planes[5].setComponents(me3 + me2, me7 + me6, me11 + me10, me15 + me14).normalize();
 			return this;
+		}
 
-		},
+		intersectsObject(object) {
+			const geometry = object.geometry;
+			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
 
-		clampScalar: function () {
+			_sphere$2.copy(geometry.boundingSphere).applyMatrix4(object.matrixWorld);
 
-			var min, max;
+			return this.intersectsSphere(_sphere$2);
+		}
 
-			return function clampScalar( minVal, maxVal ) {
+		intersectsSprite(sprite) {
+			_sphere$2.center.set(0, 0, 0);
 
-				if ( min === undefined ) {
+			_sphere$2.radius = 0.7071067811865476;
 
-					min = new Vector4();
-					max = new Vector4();
+			_sphere$2.applyMatrix4(sprite.matrixWorld);
 
-				}
+			return this.intersectsSphere(_sphere$2);
+		}
 
-				min.set( minVal, minVal, minVal, minVal );
-				max.set( maxVal, maxVal, maxVal, maxVal );
+		intersectsSphere(sphere) {
+			const planes = this.planes;
+			const center = sphere.center;
+			const negRadius = -sphere.radius;
 
-				return this.clamp( min, max );
+			for (let i = 0; i < 6; i++) {
+				const distance = planes[i].distanceToPoint(center);
 
-			};
+				if (distance < negRadius) {
+					return false;
+				}
+			}
 
-		}(),
+			return true;
+		}
 
-		clampLength: function ( min, max ) {
+		intersectsBox(box) {
+			const planes = this.planes;
 
-			var length = this.length();
+			for (let i = 0; i < 6; i++) {
+				const plane = planes[i]; // corner at max distance
 
-			return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
+				_vector$7.x = plane.normal.x > 0 ? box.max.x : box.min.x;
+				_vector$7.y = plane.normal.y > 0 ? box.max.y : box.min.y;
+				_vector$7.z = plane.normal.z > 0 ? box.max.z : box.min.z;
 
-		},
+				if (plane.distanceToPoint(_vector$7) < 0) {
+					return false;
+				}
+			}
 
-		floor: function () {
+			return true;
+		}
 
-			this.x = Math.floor( this.x );
-			this.y = Math.floor( this.y );
-			this.z = Math.floor( this.z );
-			this.w = Math.floor( this.w );
+		containsPoint(point) {
+			const planes = this.planes;
 
-			return this;
+			for (let i = 0; i < 6; i++) {
+				if (planes[i].distanceToPoint(point) < 0) {
+					return false;
+				}
+			}
 
-		},
+			return true;
+		}
 
-		ceil: function () {
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-			this.x = Math.ceil( this.x );
-			this.y = Math.ceil( this.y );
-			this.z = Math.ceil( this.z );
-			this.w = Math.ceil( this.w );
+	}
 
-			return this;
+	function WebGLAnimation() {
+		let context = null;
+		let isAnimating = false;
+		let animationLoop = null;
+		let requestId = null;
 
-		},
+		function onAnimationFrame(time, frame) {
+			animationLoop(time, frame);
+			requestId = context.requestAnimationFrame(onAnimationFrame);
+		}
 
-		round: function () {
+		return {
+			start: function () {
+				if (isAnimating === true) return;
+				if (animationLoop === null) return;
+				requestId = context.requestAnimationFrame(onAnimationFrame);
+				isAnimating = true;
+			},
+			stop: function () {
+				context.cancelAnimationFrame(requestId);
+				isAnimating = false;
+			},
+			setAnimationLoop: function (callback) {
+				animationLoop = callback;
+			},
+			setContext: function (value) {
+				context = value;
+			}
+		};
+	}
 
-			this.x = Math.round( this.x );
-			this.y = Math.round( this.y );
-			this.z = Math.round( this.z );
-			this.w = Math.round( this.w );
+	function WebGLAttributes(gl, capabilities) {
+		const isWebGL2 = capabilities.isWebGL2;
+		const buffers = new WeakMap();
 
-			return this;
+		function createBuffer(attribute, bufferType) {
+			const array = attribute.array;
+			const usage = attribute.usage;
+			const buffer = gl.createBuffer();
+			gl.bindBuffer(bufferType, buffer);
+			gl.bufferData(bufferType, array, usage);
+			attribute.onUploadCallback();
+			let type = gl.FLOAT;
 
-		},
+			if (array instanceof Float32Array) {
+				type = gl.FLOAT;
+			} else if (array instanceof Float64Array) {
+				console.warn('THREE.WebGLAttributes: Unsupported data buffer format: Float64Array.');
+			} else if (array instanceof Uint16Array) {
+				if (attribute.isFloat16BufferAttribute) {
+					if (isWebGL2) {
+						type = gl.HALF_FLOAT;
+					} else {
+						console.warn('THREE.WebGLAttributes: Usage of Float16BufferAttribute requires WebGL2.');
+					}
+				} else {
+					type = gl.UNSIGNED_SHORT;
+				}
+			} else if (array instanceof Int16Array) {
+				type = gl.SHORT;
+			} else if (array instanceof Uint32Array) {
+				type = gl.UNSIGNED_INT;
+			} else if (array instanceof Int32Array) {
+				type = gl.INT;
+			} else if (array instanceof Int8Array) {
+				type = gl.BYTE;
+			} else if (array instanceof Uint8Array) {
+				type = gl.UNSIGNED_BYTE;
+			} else if (array instanceof Uint8ClampedArray) {
+				type = gl.UNSIGNED_BYTE;
+			}
 
-		roundToZero: function () {
+			return {
+				buffer: buffer,
+				type: type,
+				bytesPerElement: array.BYTES_PER_ELEMENT,
+				version: attribute.version
+			};
+		}
 
-			this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
-			this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
-			this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
-			this.w = ( this.w < 0 ) ? Math.ceil( this.w ) : Math.floor( this.w );
+		function updateBuffer(buffer, attribute, bufferType) {
+			const array = attribute.array;
+			const updateRange = attribute.updateRange;
+			gl.bindBuffer(bufferType, buffer);
 
-			return this;
+			if (updateRange.count === -1) {
+				// Not using update ranges
+				gl.bufferSubData(bufferType, 0, array);
+			} else {
+				if (isWebGL2) {
+					gl.bufferSubData(bufferType, updateRange.offset * array.BYTES_PER_ELEMENT, array, updateRange.offset, updateRange.count);
+				} else {
+					gl.bufferSubData(bufferType, updateRange.offset * array.BYTES_PER_ELEMENT, array.subarray(updateRange.offset, updateRange.offset + updateRange.count));
+				}
 
-		},
+				updateRange.count = -1; // reset range
+			}
+		} //
 
-		negate: function () {
 
-			this.x = - this.x;
-			this.y = - this.y;
-			this.z = - this.z;
-			this.w = - this.w;
+		function get(attribute) {
+			if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
+			return buffers.get(attribute);
+		}
 
-			return this;
+		function remove(attribute) {
+			if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
+			const data = buffers.get(attribute);
 
-		},
+			if (data) {
+				gl.deleteBuffer(data.buffer);
+				buffers.delete(attribute);
+			}
+		}
 
-		dot: function ( v ) {
+		function update(attribute, bufferType) {
+			if (attribute.isGLBufferAttribute) {
+				const cached = buffers.get(attribute);
 
-			return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;
+				if (!cached || cached.version < attribute.version) {
+					buffers.set(attribute, {
+						buffer: attribute.buffer,
+						type: attribute.type,
+						bytesPerElement: attribute.elementSize,
+						version: attribute.version
+					});
+				}
 
-		},
+				return;
+			}
 
-		lengthSq: function () {
+			if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
+			const data = buffers.get(attribute);
 
-			return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;
+			if (data === undefined) {
+				buffers.set(attribute, createBuffer(attribute, bufferType));
+			} else if (data.version < attribute.version) {
+				updateBuffer(data.buffer, attribute, bufferType);
+				data.version = attribute.version;
+			}
+		}
 
-		},
+		return {
+			get: get,
+			remove: remove,
+			update: update
+		};
+	}
 
-		length: function () {
+	class PlaneGeometry extends BufferGeometry {
+		constructor(width = 1, height = 1, widthSegments = 1, heightSegments = 1) {
+			super();
+			this.type = 'PlaneGeometry';
+			this.parameters = {
+				width: width,
+				height: height,
+				widthSegments: widthSegments,
+				heightSegments: heightSegments
+			};
+			const width_half = width / 2;
+			const height_half = height / 2;
+			const gridX = Math.floor(widthSegments);
+			const gridY = Math.floor(heightSegments);
+			const gridX1 = gridX + 1;
+			const gridY1 = gridY + 1;
+			const segment_width = width / gridX;
+			const segment_height = height / gridY; //
 
-			return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );
+			const indices = [];
+			const vertices = [];
+			const normals = [];
+			const uvs = [];
 
-		},
+			for (let iy = 0; iy < gridY1; iy++) {
+				const y = iy * segment_height - height_half;
 
-		manhattanLength: function () {
+				for (let ix = 0; ix < gridX1; ix++) {
+					const x = ix * segment_width - width_half;
+					vertices.push(x, -y, 0);
+					normals.push(0, 0, 1);
+					uvs.push(ix / gridX);
+					uvs.push(1 - iy / gridY);
+				}
+			}
 
-			return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );
+			for (let iy = 0; iy < gridY; iy++) {
+				for (let ix = 0; ix < gridX; ix++) {
+					const a = ix + gridX1 * iy;
+					const b = ix + gridX1 * (iy + 1);
+					const c = ix + 1 + gridX1 * (iy + 1);
+					const d = ix + 1 + gridX1 * iy;
+					indices.push(a, b, d);
+					indices.push(b, c, d);
+				}
+			}
 
-		},
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+		}
 
-		normalize: function () {
+		static fromJSON(data) {
+			return new PlaneGeometry(data.width, data.height, data.widthSegments, data.heightSegments);
+		}
 
-			return this.divideScalar( this.length() || 1 );
+	}
 
-		},
+	var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif";
 
-		setLength: function ( length ) {
+	var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
 
-			return this.normalize().multiplyScalar( length );
+	var alphatest_fragment = "#ifdef ALPHATEST\n\tif ( diffuseColor.a < ALPHATEST ) discard;\n#endif";
 
-		},
+	var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );\n\t#endif\n#endif";
 
-		lerp: function ( v, alpha ) {
+	var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";
 
-			this.x += ( v.x - this.x ) * alpha;
-			this.y += ( v.y - this.y ) * alpha;
-			this.z += ( v.z - this.z ) * alpha;
-			this.w += ( v.w - this.w ) * alpha;
+	var begin_vertex = "vec3 transformed = vec3( position );";
 
-			return this;
+	var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif";
 
-		},
+	var bsdfs = "vec2 integrateSpecularBRDF( const in float dotNV, const in float roughness ) {\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\treturn vec2( -1.04, 1.04 ) * a004 + r.zw;\n}\nfloat punctualLightIntensityToIrradianceFactor( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\tif( cutoffDistance > 0.0 ) {\n\t\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t}\n\treturn distanceFalloff;\n#else\n\tif( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\n\t\treturn pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\n\t}\n\treturn 1.0;\n#endif\n}\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 specularColor, const in float dotVH ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotVH - 6.98316 ) * dotVH );\n\treturn ( 1.0 - specularColor ) * fresnel + specularColor;\n}\nvec3 F_Schlick_RoughnessDependent( const in vec3 F0, const in float dotNV, const in float roughness ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotNV - 6.98316 ) * dotNV );\n\tvec3 Fr = max( vec3( 1.0 - roughness ), F0 ) - F0;\n\treturn Fr * fresnel + F0;\n}\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gl = dotNL + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\tfloat gv = dotNV + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\treturn 1.0 / ( gl * gv );\n}\nfloat G_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( incidentLight.direction + viewDir );\n\tfloat dotNL = saturate( dot( normal, incidentLight.direction ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( G * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nvec3 BRDF_Specular_GGX_Environment( const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\treturn specularColor * brdf.x + brdf.y;\n}\nvoid BRDF_Specular_Multiscattering_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\tvec3 F = F_Schlick_RoughnessDependent( specularColor, dotNV, roughness );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\tvec3 FssEss = F * brdf.x + brdf.y;\n\tfloat Ess = brdf.x + brdf.y;\n\tfloat Ems = 1.0 - Ess;\n\tvec3 Favg = specularColor + ( 1.0 - specularColor ) * 0.047619;\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n\tsingleScatter += FssEss;\n\tmultiScatter += Fms * Ems;\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\n\treturn ( 2.0 / pow2( ggxRoughness + 0.0001 ) - 2.0 );\n}\nfloat BlinnExponentToGGXRoughness( const in float blinnExponent ) {\n\treturn sqrt( 2.0 / ( blinnExponent + 2.0 ) );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie(float roughness, float NoH) {\n\tfloat invAlpha = 1.0 / roughness;\n\tfloat cos2h = NoH * NoH;\n\tfloat sin2h = max(1.0 - cos2h, 0.0078125);\treturn (2.0 + invAlpha) * pow(sin2h, invAlpha * 0.5) / (2.0 * PI);\n}\nfloat V_Neubelt(float NoV, float NoL) {\n\treturn saturate(1.0 / (4.0 * (NoL + NoV - NoL * NoV)));\n}\nvec3 BRDF_Specular_Sheen( const in float roughness, const in vec3 L, const in GeometricContext geometry, vec3 specularColor ) {\n\tvec3 N = geometry.normal;\n\tvec3 V = geometry.viewDir;\n\tvec3 H = normalize( V + L );\n\tfloat dotNH = saturate( dot( N, H ) );\n\treturn specularColor * D_Charlie( roughness, dotNH ) * V_Neubelt( dot(N, V), dot(N, L) );\n}\n#endif";
 
-		lerpVectors: function ( v1, v2, alpha ) {
+	var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {\n\t\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\n\t\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 ) * faceDirection;\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif";
 
-			return this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 );
+	var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#pragma unroll_loop_end\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\tif ( clipped ) discard;\n\t#endif\n#endif";
 
-		},
+	var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";
 
-		equals: function ( v ) {
+	var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n#endif";
 
-			return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );
+	var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvClipPosition = - mvPosition.xyz;\n#endif";
 
-		},
+	var color_fragment = "#if defined( USE_COLOR_ALPHA )\n\tdiffuseColor *= vColor;\n#elif defined( USE_COLOR )\n\tdiffuseColor.rgb *= vColor;\n#endif";
 
-		fromArray: function ( array, offset ) {
+	var color_pars_fragment = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR )\n\tvarying vec3 vColor;\n#endif";
 
-			if ( offset === undefined ) offset = 0;
+	var color_pars_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvarying vec3 vColor;\n#endif";
 
-			this.x = array[ offset ];
-			this.y = array[ offset + 1 ];
-			this.z = array[ offset + 2 ];
-			this.w = array[ offset + 3 ];
+	var color_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvColor = vec4( 1.0 );\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n\tvColor *= color;\n#endif\n#ifdef USE_INSTANCING_COLOR\n\tvColor.xyz *= instanceColor.xyz;\n#endif";
 
-			return this;
+	var common = "#define PI 3.141592653589793\n#define PI2 6.283185307179586\n#define PI_HALF 1.5707963267948966\n#define RECIPROCAL_PI 0.3183098861837907\n#define RECIPROCAL_PI2 0.15915494309189535\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement(a) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract(sin(sn) * c);\n}\n#ifdef HIGH_PRECISION\n\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n\tfloat max3( vec3 v ) { return max( max( v.x, v.y ), v.z ); }\n\tfloat precisionSafeLength( vec3 v ) {\n\t\tfloat maxComponent = max3( abs( v ) );\n\t\treturn length( v / maxComponent ) * maxComponent;\n\t}\n#endif\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n#ifdef CLEARCOAT\n\tvec3 clearcoatNormal;\n#endif\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\tfloat distance = dot( planeNormal, point - pointOnPlane );\n\treturn - distance * planeNormal + point;\n}\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn sign( dot( point - pointOnPlane, planeNormal ) );\n}\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat linearToRelativeLuminance( const in vec3 color ) {\n\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\n\treturn dot( weights, color.rgb );\n}\nbool isPerspectiveMatrix( mat4 m ) {\n\treturn m[ 2 ][ 3 ] == - 1.0;\n}\nvec2 equirectUv( in vec3 dir ) {\n\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\n\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\treturn vec2( u, v );\n}";
 
-		},
+	var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n\t#define cubeUV_maxMipLevel 8.0\n\t#define cubeUV_minMipLevel 4.0\n\t#define cubeUV_maxTileSize 256.0\n\t#define cubeUV_minTileSize 16.0\n\tfloat getFace( vec3 direction ) {\n\t\tvec3 absDirection = abs( direction );\n\t\tfloat face = - 1.0;\n\t\tif ( absDirection.x > absDirection.z ) {\n\t\t\tif ( absDirection.x > absDirection.y )\n\t\t\t\tface = direction.x > 0.0 ? 0.0 : 3.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t} else {\n\t\t\tif ( absDirection.z > absDirection.y )\n\t\t\t\tface = direction.z > 0.0 ? 2.0 : 5.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t}\n\t\treturn face;\n\t}\n\tvec2 getUV( vec3 direction, float face ) {\n\t\tvec2 uv;\n\t\tif ( face == 0.0 ) {\n\t\t\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 1.0 ) {\n\t\t\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\n\t\t} else if ( face == 2.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\n\t\t} else if ( face == 3.0 ) {\n\t\t\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 4.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\n\t\t} else {\n\t\t\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\n\t\t}\n\t\treturn 0.5 * ( uv + 1.0 );\n\t}\n\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\n\t\tfloat face = getFace( direction );\n\t\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\n\t\tmipInt = max( mipInt, cubeUV_minMipLevel );\n\t\tfloat faceSize = exp2( mipInt );\n\t\tfloat texelSize = 1.0 / ( 3.0 * cubeUV_maxTileSize );\n\t\tvec2 uv = getUV( direction, face ) * ( faceSize - 1.0 );\n\t\tvec2 f = fract( uv );\n\t\tuv += 0.5 - f;\n\t\tif ( face > 2.0 ) {\n\t\t\tuv.y += faceSize;\n\t\t\tface -= 3.0;\n\t\t}\n\t\tuv.x += face * faceSize;\n\t\tif ( mipInt < cubeUV_maxMipLevel ) {\n\t\t\tuv.y += 2.0 * cubeUV_maxTileSize;\n\t\t}\n\t\tuv.y += filterInt * 2.0 * cubeUV_minTileSize;\n\t\tuv.x += 3.0 * max( 0.0, cubeUV_maxTileSize - 2.0 * faceSize );\n\t\tuv *= texelSize;\n\t\tvec3 tl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x += texelSize;\n\t\tvec3 tr = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.y += texelSize;\n\t\tvec3 br = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x -= texelSize;\n\t\tvec3 bl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tvec3 tm = mix( tl, tr, f.x );\n\t\tvec3 bm = mix( bl, br, f.x );\n\t\treturn mix( tm, bm, f.y );\n\t}\n\t#define r0 1.0\n\t#define v0 0.339\n\t#define m0 - 2.0\n\t#define r1 0.8\n\t#define v1 0.276\n\t#define m1 - 1.0\n\t#define r4 0.4\n\t#define v4 0.046\n\t#define m4 2.0\n\t#define r5 0.305\n\t#define v5 0.016\n\t#define m5 3.0\n\t#define r6 0.21\n\t#define v6 0.0038\n\t#define m6 4.0\n\tfloat roughnessToMip( float roughness ) {\n\t\tfloat mip = 0.0;\n\t\tif ( roughness >= r1 ) {\n\t\t\tmip = ( r0 - roughness ) * ( m1 - m0 ) / ( r0 - r1 ) + m0;\n\t\t} else if ( roughness >= r4 ) {\n\t\t\tmip = ( r1 - roughness ) * ( m4 - m1 ) / ( r1 - r4 ) + m1;\n\t\t} else if ( roughness >= r5 ) {\n\t\t\tmip = ( r4 - roughness ) * ( m5 - m4 ) / ( r4 - r5 ) + m4;\n\t\t} else if ( roughness >= r6 ) {\n\t\t\tmip = ( r5 - roughness ) * ( m6 - m5 ) / ( r5 - r6 ) + m5;\n\t\t} else {\n\t\t\tmip = - 2.0 * log2( 1.16 * roughness );\t\t}\n\t\treturn mip;\n\t}\n\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\n\t\tfloat mip = clamp( roughnessToMip( roughness ), m0, cubeUV_maxMipLevel );\n\t\tfloat mipF = fract( mip );\n\t\tfloat mipInt = floor( mip );\n\t\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\n\t\tif ( mipF == 0.0 ) {\n\t\t\treturn vec4( color0, 1.0 );\n\t\t} else {\n\t\t\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\n\t\t\treturn vec4( mix( color0, color1, mipF ), 1.0 );\n\t\t}\n\t}\n#endif";
 
-		toArray: function ( array, offset ) {
+	var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_INSTANCING\n\tmat3 m = mat3( instanceMatrix );\n\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\n\ttransformedNormal = m * transformedNormal;\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif";
 
-			if ( array === undefined ) array = [];
-			if ( offset === undefined ) offset = 0;
+	var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif";
 
-			array[ offset ] = this.x;
-			array[ offset + 1 ] = this.y;
-			array[ offset + 2 ] = this.z;
-			array[ offset + 3 ] = this.w;
+	var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\n#endif";
 
-			return array;
+	var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif";
 
-		},
+	var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif";
 
-		fromBufferAttribute: function ( attribute, index, offset ) {
+	var encodings_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";
 
-			if ( offset !== undefined ) {
+	var encodings_pars_fragment = "\nvec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( gammaFactor ) ), value.a );\n}\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( 1.0 / gammaFactor ) ), value.a );\n}\nvec4 sRGBToLinear( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.a );\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}\nvec4 RGBEToLinear( in vec4 value ) {\n\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\n}\nvec4 LinearToRGBE( in vec4 value ) {\n\tfloat maxComponent = max( max( value.r, value.g ), value.b );\n\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\n\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\n}\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * value.a * maxRange, 1.0 );\n}\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat M = clamp( maxRGB / maxRange, 0.0, 1.0 );\n\tM = ceil( M * 255.0 ) / 255.0;\n\treturn vec4( value.rgb / ( M * maxRange ), M );\n}\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\n}\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat D = max( maxRange / maxRGB, 1.0 );\n\tD = clamp( floor( D ) / 255.0, 0.0, 1.0 );\n\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\n}\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\nvec4 LinearToLogLuv( in vec4 value ) {\n\tvec3 Xp_Y_XYZp = cLogLuvM * value.rgb;\n\tXp_Y_XYZp = max( Xp_Y_XYZp, vec3( 1e-6, 1e-6, 1e-6 ) );\n\tvec4 vResult;\n\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\n\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\n\tvResult.w = fract( Le );\n\tvResult.z = ( Le - ( floor( vResult.w * 255.0 ) ) / 255.0 ) / 255.0;\n\treturn vResult;\n}\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\nvec4 LogLuvToLinear( in vec4 value ) {\n\tfloat Le = value.z * 255.0 + value.w;\n\tvec3 Xp_Y_XYZp;\n\tXp_Y_XYZp.y = exp2( ( Le - 127.0 ) / 2.0 );\n\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\n\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\n\tvec3 vRGB = cLogLuvInverseM * Xp_Y_XYZp.rgb;\n\treturn vec4( max( vRGB, 0.0 ), 1.0 );\n}";
 
-				console.warn( 'THREE.Vector4: offset has been removed from .fromBufferAttribute().' );
+	var envmap_fragment = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToFrag;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\tvec4 envColor = textureCubeUV( envMap, reflectVec, 0.0 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\t#ifndef ENVMAP_TYPE_CUBE_UV\n\t\tenvColor = envMapTexelToLinear( envColor );\n\t#endif\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif";
 
-			}
+	var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\tuniform int maxMipLevel;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif";
 
-			this.x = attribute.getX( index );
-			this.y = attribute.getY( index );
-			this.z = attribute.getZ( index );
-			this.w = attribute.getW( index );
+	var envmap_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif";
 
-			return this;
+	var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) ||defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif";
 
-		}
+	var envmap_vertex = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif";
 
-	} );
+	var fog_vertex = "#ifdef USE_FOG\n\tfogDepth = - mvPosition.z;\n#endif";
 
-	/**
-	 * @author szimek / https://github.com/szimek/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author Marius Kintel / https://github.com/kintel
-	 */
+	var fog_pars_vertex = "#ifdef USE_FOG\n\tvarying float fogDepth;\n#endif";
 
-	/*
-	 In options, we can specify:
-	 * Texture parameters for an auto-generated target texture
-	 * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers
-	*/
-	function WebGLRenderTarget( width, height, options ) {
+	var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * fogDepth * fogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, fogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";
 
-		this.width = width;
-		this.height = height;
+	var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float fogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif";
 
-		this.scissor = new Vector4( 0, 0, width, height );
-		this.scissorTest = false;
+	var gradientmap_pars_fragment = "#ifdef USE_GRADIENTMAP\n\tuniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\tfloat dotNL = dot( normal, lightDirection );\n\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t#ifdef USE_GRADIENTMAP\n\t\treturn texture2D( gradientMap, coord ).rgb;\n\t#else\n\t\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\n\t#endif\n}";
 
-		this.viewport = new Vector4( 0, 0, width, height );
+	var lightmap_fragment = "#ifdef USE_LIGHTMAP\n\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\treflectedLight.indirectDiffuse += PI * lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n#endif";
 
-		options = options || {};
+	var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";
 
-		if ( options.minFilter === undefined ) options.minFilter = LinearFilter;
+	var lights_lambert_vertex = "vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\nvIndirectFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n\tvLightBack = vec3( 0.0 );\n\tvIndirectBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\nvIndirectFront += getAmbientLightIrradiance( ambientLightColor );\nvIndirectFront += getLightProbeIrradiance( lightProbe, geometry );\n#ifdef DOUBLE_SIDED\n\tvIndirectBack += getAmbientLightIrradiance( ambientLightColor );\n\tvIndirectBack += getLightProbeIrradiance( lightProbe, backGeometry );\n#endif\n#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tgetPointDirectLightIrradiance( pointLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tgetSpotDirectLightIrradiance( spotLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tgetDirectionalDirectLightIrradiance( directionalLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\tvIndirectFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvIndirectBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif";
 
-		this.texture = new Texture( undefined, undefined, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );
+	var lights_pars_begin = "uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\nuniform vec3 lightProbe[ 9 ];\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n\tfloat x = normal.x, y = normal.y, z = normal.z;\n\tvec3 result = shCoefficients[ 0 ] * 0.886227;\n\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n\treturn result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in GeometricContext geometry ) {\n\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n\treturn irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treturn irradiance;\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalDirectLightIrradiance( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tdirectLight.color = directionalLight.color;\n\t\tdirectLight.direction = directionalLight.direction;\n\t\tdirectLight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointDirectLightIrradiance( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tdirectLight.color = pointLight.color;\n\t\tdirectLight.color *= punctualLightIntensityToIrradianceFactor( lightDistance, pointLight.distance, pointLight.decay );\n\t\tdirectLight.visible = ( directLight.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotDirectLightIrradiance( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tfloat angleCos = dot( directLight.direction, spotLight.direction );\n\t\tif ( angleCos > spotLight.coneCos ) {\n\t\t\tfloat spotEffect = smoothstep( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\t\tdirectLight.color = spotLight.color;\n\t\t\tdirectLight.color *= spotEffect * punctualLightIntensityToIrradianceFactor( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tdirectLight.visible = true;\n\t\t} else {\n\t\t\tdirectLight.color = vec3( 0.0 );\n\t\t\tdirectLight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\n\t\tfloat dotNL = dot( geometry.normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tirradiance *= PI;\n\t\t#endif\n\t\treturn irradiance;\n\t}\n#endif";
 
-		this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;
-		this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : true;
-		this.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;
+	var envmap_physical_pars_fragment = "#if defined( USE_ENVMAP )\n\t#ifdef ENVMAP_MODE_REFRACTION\n\t\tuniform float refractionRatio;\n\t#endif\n\tvec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\n\t\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\n\t\t#else\n\t\t\tvec4 envMapColor = vec4( 0.0 );\n\t\t#endif\n\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t}\n\tfloat getSpecularMIPLevel( const in float roughness, const in int maxMIPLevel ) {\n\t\tfloat maxMIPLevelScalar = float( maxMIPLevel );\n\t\tfloat sigma = PI * roughness * roughness / ( 1.0 + roughness );\n\t\tfloat desiredMIPLevel = maxMIPLevelScalar + log2( sigma );\n\t\treturn clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\n\t}\n\tvec3 getLightProbeIndirectRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in int maxMIPLevel ) {\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( -viewDir, normal );\n\t\t\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( -viewDir, normal, refractionRatio );\n\t\t#endif\n\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\tfloat specularMIPLevel = getSpecularMIPLevel( roughness, maxMIPLevel );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\n\t\t#endif\n\t\treturn envMapColor.rgb * envMapIntensity;\n\t}\n#endif";
 
-	}
+	var lights_toon_fragment = "ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;";
 
-	WebGLRenderTarget.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+	var lights_toon_pars_fragment = "varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct ToonMaterial {\n\tvec3 diffuseColor;\n};\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Toon\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Toon\n#define Material_LightProbeLOD( material )\t(0)";
 
-		constructor: WebGLRenderTarget,
+	var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";
 
-		isWebGLRenderTarget: true,
+	var lights_phong_pars_fragment = "varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct BlinnPhongMaterial {\n\tvec3 diffuseColor;\n\tvec3 specularColor;\n\tfloat specularShininess;\n\tfloat specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)";
 
-		setSize: function ( width, height ) {
+	var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.specularRoughness = max( roughnessFactor, 0.0525 );material.specularRoughness += geometryRoughness;\nmaterial.specularRoughness = min( material.specularRoughness, 1.0 );\n#ifdef REFLECTIVITY\n\tmaterial.specularColor = mix( vec3( MAXIMUM_SPECULAR_COEFFICIENT * pow2( reflectivity ) ), diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( DEFAULT_SPECULAR_COEFFICIENT ), diffuseColor.rgb, metalnessFactor );\n#endif\n#ifdef CLEARCOAT\n\tmaterial.clearcoat = clearcoat;\n\tmaterial.clearcoatRoughness = clearcoatRoughness;\n\t#ifdef USE_CLEARCOATMAP\n\t\tmaterial.clearcoat *= texture2D( clearcoatMap, vUv ).x;\n\t#endif\n\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\t\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vUv ).y;\n\t#endif\n\tmaterial.clearcoat = saturate( material.clearcoat );\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n\tmaterial.clearcoatRoughness += geometryRoughness;\n\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenColor = sheen;\n#endif";
 
-			if ( this.width !== width || this.height !== height ) {
+	var lights_physical_pars_fragment = "struct PhysicalMaterial {\n\tvec3 diffuseColor;\n\tfloat specularRoughness;\n\tvec3 specularColor;\n#ifdef CLEARCOAT\n\tfloat clearcoat;\n\tfloat clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tvec3 sheenColor;\n#endif\n};\n#define MAXIMUM_SPECULAR_COEFFICIENT 0.16\n#define DEFAULT_SPECULAR_COEFFICIENT 0.04\nfloat clearcoatDHRApprox( const in float roughness, const in float dotNL ) {\n\treturn DEFAULT_SPECULAR_COEFFICIENT + ( 1.0 - DEFAULT_SPECULAR_COEFFICIENT ) * ( pow( 1.0 - dotNL, 5.0 ) * pow( 1.0 - roughness, 2.0 ) );\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.specularRoughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(		0, 1,		0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNL = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = ccDotNL * directLight.color;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tccIrradiance *= PI;\n\t\t#endif\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t\treflectedLight.directSpecular += ccIrradiance * material.clearcoat * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\t#ifdef USE_SHEEN\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_Sheen(\n\t\t\tmaterial.specularRoughness,\n\t\t\tdirectLight.direction,\n\t\t\tgeometry,\n\t\t\tmaterial.sheenColor\n\t\t);\n\t#else\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.normal, material.specularColor, material.specularRoughness);\n\t#endif\n\treflectedLight.directDiffuse += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNV = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular += clearcoatRadiance * material.clearcoat * BRDF_Specular_GGX_Environment( geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t\tfloat ccDotNL = ccDotNV;\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\tfloat clearcoatInv = 1.0 - clearcoatDHR;\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n\tBRDF_Specular_Multiscattering_Environment( geometry, material.specularColor, material.specularRoughness, singleScattering, multiScattering );\n\tvec3 diffuse = material.diffuseColor * ( 1.0 - ( singleScattering + multiScattering ) );\n\treflectedLight.indirectSpecular += clearcoatInv * radiance * singleScattering;\n\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}";
 
-				this.width = width;
-				this.height = height;
+	var lights_fragment_begin = "\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\n#ifdef CLEARCOAT\n\tgeometry.clearcoatNormal = clearcoatNormal;\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointDirectLightIrradiance( pointLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n\t\tpointLightShadow = pointLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotDirectLightIrradiance( spotLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\tspotLightShadow = spotLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalDirectLightIrradiance( directionalLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n\t\tdirectionalLightShadow = directionalLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 iblIrradiance = vec3( 0.0 );\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\tirradiance += getLightProbeIrradiance( lightProbe, geometry );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearcoatRadiance = vec3( 0.0 );\n#endif";
 
-				this.dispose();
+	var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\tvec3 lightMapIrradiance = lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tlightMapIrradiance *= PI;\n\t\t#endif\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getLightProbeIndirectIrradiance( geometry, maxMipLevel );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.normal, material.specularRoughness, maxMipLevel );\n\t#ifdef CLEARCOAT\n\t\tclearcoatRadiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness, maxMipLevel );\n\t#endif\n#endif";
 
-			}
+	var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\n#endif";
 
-			this.viewport.set( 0, 0, width, height );
-			this.scissor.set( 0, 0, width, height );
+	var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";
 
-		},
+	var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";
 
-		clone: function () {
+	var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t\tvarying float vIsPerspective;\n\t#else\n\t\tuniform float logDepthBufFC;\n\t#endif\n#endif";
 
-			return new this.constructor().copy( this );
+	var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n\t#else\n\t\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\n\t\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\t\tgl_Position.z *= gl_Position.w;\n\t\t}\n\t#endif\n#endif";
 
-		},
+	var map_fragment = "#ifdef USE_MAP\n\tvec4 texelColor = texture2D( map, vUv );\n\ttexelColor = mapTexelToLinear( texelColor );\n\tdiffuseColor *= texelColor;\n#endif";
 
-		copy: function ( source ) {
+	var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif";
 
-			this.width = source.width;
-			this.height = source.height;
+	var map_particle_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n#endif\n#ifdef USE_MAP\n\tvec4 mapTexel = texture2D( map, uv );\n\tdiffuseColor *= mapTexelToLinear( mapTexel );\n#endif\n#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif";
 
-			this.viewport.copy( source.viewport );
+	var map_particle_pars_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tuniform mat3 uvTransform;\n#endif\n#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
 
-			this.texture = source.texture.clone();
+	var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif";
 
-			this.depthBuffer = source.depthBuffer;
-			this.stencilBuffer = source.stencilBuffer;
-			this.depthTexture = source.depthTexture;
+	var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";
 
-			return this;
+	var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal *= morphTargetBaseInfluence;\n\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\n\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\n\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\n\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\n#endif";
 
-		},
+	var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\tuniform float morphTargetBaseInfluence;\n\t#ifndef USE_MORPHNORMALS\n\t\tuniform float morphTargetInfluences[ 8 ];\n\t#else\n\t\tuniform float morphTargetInfluences[ 4 ];\n\t#endif\n#endif";
 
-		dispose: function () {
+	var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed *= morphTargetBaseInfluence;\n\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\n\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\n\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\n\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\n\t#ifndef USE_MORPHNORMALS\n\t\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\n\t\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\n\t\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\n\t\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\n\t#endif\n#endif";
 
-			this.dispatchEvent( { type: 'dispose' } );
+	var normal_fragment_begin = "float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;\n#ifdef FLAT_SHADED\n\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\t#ifdef USE_TANGENT\n\t\tvec3 tangent = normalize( vTangent );\n\t\tvec3 bitangent = normalize( vBitangent );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\ttangent = tangent * faceDirection;\n\t\t\tbitangent = bitangent * faceDirection;\n\t\t#endif\n\t\t#if defined( TANGENTSPACE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )\n\t\t\tmat3 vTBN = mat3( tangent, bitangent, normal );\n\t\t#endif\n\t#endif\n#endif\nvec3 geometryNormal = normal;";
 
-		}
+	var normal_fragment_maps = "#ifdef OBJECTSPACE_NORMALMAP\n\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( TANGENTSPACE_NORMALMAP )\n\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\tmapN.xy *= normalScale;\n\t#ifdef USE_TANGENT\n\t\tnormal = normalize( vTBN * mapN );\n\t#else\n\t\tnormal = perturbNormal2Arb( -vViewPosition, normal, mapN, faceDirection );\n\t#endif\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd(), faceDirection );\n#endif";
 
-	} );
+	var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef OBJECTSPACE_NORMALMAP\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec3 mapN, float faceDirection ) {\n\t\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\n\t\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tvec3 N = surf_norm;\n\t\tvec3 q1perp = cross( q1, N );\n\t\tvec3 q0perp = cross( N, q0 );\n\t\tvec3 T = q1perp * st0.x + q0perp * st1.x;\n\t\tvec3 B = q1perp * st0.y + q0perp * st1.y;\n\t\tfloat det = max( dot( T, T ), dot( B, B ) );\n\t\tfloat scale = ( det == 0.0 ) ? 0.0 : faceDirection * inversesqrt( det );\n\t\treturn normalize( T * ( mapN.x * scale ) + B * ( mapN.y * scale ) + N * mapN.z );\n\t}\n#endif";
 
-	/**
-	 * @author alteredq / http://alteredqualia.com
-	 */
+	var clearcoat_normal_fragment_begin = "#ifdef CLEARCOAT\n\tvec3 clearcoatNormal = geometryNormal;\n#endif";
 
-	function WebGLRenderTargetCube( width, height, options ) {
+	var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vUv ).xyz * 2.0 - 1.0;\n\tclearcoatMapN.xy *= clearcoatNormalScale;\n\t#ifdef USE_TANGENT\n\t\tclearcoatNormal = normalize( vTBN * clearcoatMapN );\n\t#else\n\t\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatMapN, faceDirection );\n\t#endif\n#endif";
 
-		WebGLRenderTarget.call( this, width, height, options );
+	var clearcoat_pars_fragment = "#ifdef USE_CLEARCOATMAP\n\tuniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform sampler2D clearcoatRoughnessMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif";
 
-		this.activeCubeFace = 0; // PX 0, NX 1, PY 2, NY 3, PZ 4, NZ 5
-		this.activeMipMapLevel = 0;
+	var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nvec4 pack2HalfToRGBA( vec2 v ) {\n\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ));\n\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w);\n}\nvec2 unpackRGBATo2Half( vec4 v ) {\n\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn (( near + viewZ ) * far ) / (( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}";
 
-	}
+	var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif";
 
-	WebGLRenderTargetCube.prototype = Object.create( WebGLRenderTarget.prototype );
-	WebGLRenderTargetCube.prototype.constructor = WebGLRenderTargetCube;
+	var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";
 
-	WebGLRenderTargetCube.prototype.isWebGLRenderTargetCube = true;
+	var dithering_fragment = "#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";
 
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 */
+	var dithering_pars_fragment = "#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif";
 
-	function DataTexture( data, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {
+	var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif";
 
-		Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );
+	var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";
 
-		this.image = { data: data, width: width, height: height };
+	var shadowmap_pars_fragment = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n\t\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\n\t}\n\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n\t\tfloat occlusion = 1.0;\n\t\tvec2 distribution = texture2DDistribution( shadow, uv );\n\t\tfloat hard_shadow = step( compare , distribution.x );\n\t\tif (hard_shadow != 1.0 ) {\n\t\t\tfloat distance = compare - distribution.x ;\n\t\t\tfloat variance = max( 0.00000, distribution.y * distribution.y );\n\t\t\tfloat softness_probability = variance / (variance + distance * distance );\t\t\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\t\t\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n\t\t}\n\t\treturn occlusion;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tfloat dx2 = dx0 / 2.0;\n\t\t\tfloat dy2 = dy0 / 2.0;\n\t\t\tfloat dx3 = dx1 / 2.0;\n\t\t\tfloat dy3 = dy1 / 2.0;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 17.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx = texelSize.x;\n\t\t\tfloat dy = texelSize.y;\n\t\t\tvec2 uv = shadowCoord.xy;\n\t\t\tvec2 f = fract( uv * shadowMapSize + 0.5 );\n\t\t\tuv -= f * texelSize;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t\t	texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t	f.x ),\n\t\t\t\t\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ), \n\t\t\t\t\t\t	texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t	f.x ),\n\t\t\t\t\t f.y )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_VSM )\n\t\t\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif";
 
-		this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
-		this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
+	var shadowmap_pars_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n#endif";
 
-		this.generateMipmaps = false;
-		this.flipY = false;
-		this.unpackAlignment = 1;
+	var shadowmap_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SPOT_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0\n\t\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\tvec4 shadowWorldPosition;\n\t#endif\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n#endif";
 
-	}
+	var shadowmask_pars_fragment = "float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tdirectionalLight = directionalLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tspotLight = spotLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tpointLight = pointLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#endif\n\treturn shadow;\n}";
 
-	DataTexture.prototype = Object.create( Texture.prototype );
-	DataTexture.prototype.constructor = DataTexture;
+	var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";
 
-	DataTexture.prototype.isDataTexture = true;
+	var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\t#ifdef BONE_TEXTURE\n\t\tuniform highp sampler2D boneTexture;\n\t\tuniform int boneTextureSize;\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tfloat j = i * 4.0;\n\t\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\t\ty = dy * ( y + 0.5 );\n\t\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\t\treturn bone;\n\t\t}\n\t#else\n\t\tuniform mat4 boneMatrices[ MAX_BONES ];\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tmat4 bone = boneMatrices[ int(i) ];\n\t\t\treturn bone;\n\t\t}\n\t#endif\n#endif";
 
-	/**
-	 * @author bhouston / http://clara.io
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
+	var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";
 
-	function Box3( min, max ) {
+	var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif";
 
-		this.min = ( min !== undefined ) ? min : new Vector3( + Infinity, + Infinity, + Infinity );
-		this.max = ( max !== undefined ) ? max : new Vector3( - Infinity, - Infinity, - Infinity );
+	var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";
 
-	}
+	var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";
 
-	Object.assign( Box3.prototype, {
+	var tonemapping_fragment = "#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";
 
-		isBox3: true,
+	var tonemapping_pars_fragment = "#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 RRTAndODTFit( vec3 v ) {\n\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\n\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\n\treturn a / b;\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n\tconst mat3 ACESInputMat = mat3(\n\t\tvec3( 0.59719, 0.07600, 0.02840 ),\t\tvec3( 0.35458, 0.90834, 0.13383 ),\n\t\tvec3( 0.04823, 0.01566, 0.83777 )\n\t);\n\tconst mat3 ACESOutputMat = mat3(\n\t\tvec3(	1.60475, -0.10208, -0.00327 ),\t\tvec3( -0.53108,	1.10813, -0.07276 ),\n\t\tvec3( -0.07367, -0.00605,	1.07602 )\n\t);\n\tcolor *= toneMappingExposure / 0.6;\n\tcolor = ACESInputMat * color;\n\tcolor = RRTAndODTFit( color );\n\tcolor = ACESOutputMat * color;\n\treturn saturate( color );\n}\nvec3 CustomToneMapping( vec3 color ) { return color; }";
 
-		set: function ( min, max ) {
+	var transmission_fragment = "#ifdef USE_TRANSMISSION\n\tfloat transmissionFactor = transmission;\n\tfloat thicknessFactor = thickness;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\ttransmissionFactor *= texture2D( transmissionMap, vUv ).r;\n\t#endif\n\t#ifdef USE_THICKNESSNMAP\n\t\tthicknessFactor *= texture2D( thicknessMap, vUv ).g;\n\t#endif\n\tvec3 pos = vWorldPosition.xyz / vWorldPosition.w;\n\tvec3 v = normalize( cameraPosition - pos );\n\tfloat ior = ( 1.0 + 0.4 * reflectivity ) / ( 1.0 - 0.4 * reflectivity );\n\tvec3 transmission = transmissionFactor * getIBLVolumeRefraction(\n\t\tnormal, v, roughnessFactor, material.diffuseColor, totalSpecular,\n\t\tpos, modelMatrix, viewMatrix, projectionMatrix, ior, thicknessFactor,\n\t\tattenuationColor, attenuationDistance );\n\ttotalDiffuse = mix( totalDiffuse, transmission, transmissionFactor );\n#endif";
 
-			this.min.copy( min );
-			this.max.copy( max );
+	var transmission_pars_fragment = "#ifdef USE_TRANSMISSION\n\t#ifdef USE_TRANSMISSIONMAP\n\t\tuniform sampler2D transmissionMap;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tuniform sampler2D thicknessMap;\n\t#endif\n\tuniform vec2 transmissionSamplerSize;\n\tuniform sampler2D transmissionSamplerMap;\n\tuniform mat4 modelMatrix;\n\tuniform mat4 projectionMatrix;\n\tvarying vec4 vWorldPosition;\n\tvec3 getVolumeTransmissionRay(vec3 n, vec3 v, float thickness, float ior, mat4 modelMatrix) {\n\t\tvec3 refractionVector = refract(-v, normalize(n), 1.0 / ior);\n\t\tvec3 modelScale;\n\t\tmodelScale.x = length(vec3(modelMatrix[0].xyz));\n\t\tmodelScale.y = length(vec3(modelMatrix[1].xyz));\n\t\tmodelScale.z = length(vec3(modelMatrix[2].xyz));\n\t\treturn normalize(refractionVector) * thickness * modelScale;\n\t}\n\tfloat applyIorToRoughness(float roughness, float ior) {\n\t\treturn roughness * clamp(ior * 2.0 - 2.0, 0.0, 1.0);\n\t}\n\tvec3 getTransmissionSample(vec2 fragCoord, float roughness, float ior) {\n\t\tfloat framebufferLod = log2(transmissionSamplerSize.x) * applyIorToRoughness(roughness, ior);\n\t\treturn texture2DLodEXT(transmissionSamplerMap, fragCoord.xy, framebufferLod).rgb;\n\t}\n\tvec3 applyVolumeAttenuation(vec3 radiance, float transmissionDistance, vec3 attenuationColor, float attenuationDistance) {\n\t\tif (attenuationDistance == 0.0) {\n\t\t\treturn radiance;\n\t\t} else {\n\t\t\tvec3 attenuationCoefficient = -log(attenuationColor) / attenuationDistance;\n\t\t\tvec3 transmittance = exp(-attenuationCoefficient * transmissionDistance);\t\t\treturn transmittance * radiance;\n\t\t}\n\t}\n\tvec3 getIBLVolumeRefraction(vec3 n, vec3 v, float perceptualRoughness, vec3 baseColor, vec3 specularColor,\n\t\tvec3 position, mat4 modelMatrix, mat4 viewMatrix, mat4 projMatrix, float ior, float thickness,\n\t\tvec3 attenuationColor, float attenuationDistance) {\n\t\tvec3 transmissionRay = getVolumeTransmissionRay(n, v, thickness, ior, modelMatrix);\n\t\tvec3 refractedRayExit = position + transmissionRay;\n\t\tvec4 ndcPos = projMatrix * viewMatrix * vec4(refractedRayExit, 1.0);\n\t\tvec2 refractionCoords = ndcPos.xy / ndcPos.w;\n\t\trefractionCoords += 1.0;\n\t\trefractionCoords /= 2.0;\n\t\tvec3 transmittedLight = getTransmissionSample(refractionCoords, perceptualRoughness, ior);\n\t\tvec3 attenuatedColor = applyVolumeAttenuation(transmittedLight, length(transmissionRay), attenuationColor, attenuationDistance);\n\t\treturn (1.0 - specularColor) * attenuatedColor * baseColor;\n\t}\n#endif";
 
-			return this;
+	var uv_pars_fragment = "#if ( defined( USE_UV ) && ! defined( UVS_VERTEX_ONLY ) )\n\tvarying vec2 vUv;\n#endif";
 
-		},
+	var uv_pars_vertex = "#ifdef USE_UV\n\t#ifdef UVS_VERTEX_ONLY\n\t\tvec2 vUv;\n\t#else\n\t\tvarying vec2 vUv;\n\t#endif\n\tuniform mat3 uvTransform;\n#endif";
 
-		setFromArray: function ( array ) {
+	var uv_vertex = "#ifdef USE_UV\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif";
 
-			var minX = + Infinity;
-			var minY = + Infinity;
-			var minZ = + Infinity;
+	var uv2_pars_fragment = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif";
 
-			var maxX = - Infinity;
-			var maxY = - Infinity;
-			var maxZ = - Infinity;
+	var uv2_pars_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n\tuniform mat3 uv2Transform;\n#endif";
 
-			for ( var i = 0, l = array.length; i < l; i += 3 ) {
+	var uv2_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = ( uv2Transform * vec3( uv2, 1 ) ).xy;\n#endif";
 
-				var x = array[ i ];
-				var y = array[ i + 1 ];
-				var z = array[ i + 2 ];
+	var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP ) || defined ( USE_TRANSMISSION )\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif";
 
-				if ( x < minX ) minX = x;
-				if ( y < minY ) minY = y;
-				if ( z < minZ ) minZ = z;
+	var background_frag = "uniform sampler2D t2D;\nvarying vec2 vUv;\nvoid main() {\n\tvec4 texColor = texture2D( t2D, vUv );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
 
-				if ( x > maxX ) maxX = x;
-				if ( y > maxY ) maxY = y;
-				if ( z > maxZ ) maxZ = z;
+	var background_vert = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}";
 
-			}
+	var cube_frag = "#include <envmap_common_pars_fragment>\nuniform float opacity;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n\tvec3 vReflect = vWorldDirection;\n\t#include <envmap_fragment>\n\tgl_FragColor = envColor;\n\tgl_FragColor.a *= opacity;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
 
-			this.min.set( minX, minY, minZ );
-			this.max.set( maxX, maxY, maxZ );
+	var cube_vert = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";
 
-			return this;
+	var depth_frag = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( fragCoordZ );\n\t#endif\n}";
 
-		},
+	var depth_vert = "#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvHighPrecisionZW = gl_Position.zw;\n}";
 
-		setFromBufferAttribute: function ( attribute ) {
+	var distanceRGBA_frag = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}";
 
-			var minX = + Infinity;
-			var minY = + Infinity;
-			var minZ = + Infinity;
+	var distanceRGBA_vert = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}";
 
-			var maxX = - Infinity;
-			var maxY = - Infinity;
-			var maxZ = - Infinity;
+	var equirect_frag = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV = equirectUv( direction );\n\tvec4 texColor = texture2D( tEquirect, sampleUV );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
 
-			for ( var i = 0, l = attribute.count; i < l; i ++ ) {
+	var equirect_vert = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}";
 
-				var x = attribute.getX( i );
-				var y = attribute.getY( i );
-				var z = attribute.getZ( i );
+	var linedashed_frag = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";
 
-				if ( x < minX ) minX = x;
-				if ( y < minY ) minY = y;
-				if ( z < minZ ) minZ = z;
+	var linedashed_vert = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\tvLineDistance = scale * lineDistance;\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
 
-				if ( x > maxX ) maxX = x;
-				if ( y > maxY ) maxY = y;
-				if ( z > maxZ ) maxZ = z;
+	var meshbasic_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\treflectedLight.indirectDiffuse += lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
 
-			}
+	var meshbasic_vert = "#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_ENVMAP\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}";
 
-			this.min.set( minX, minY, minZ );
-			this.max.set( maxX, maxY, maxZ );
+	var meshlambert_frag = "uniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <emissivemap_fragment>\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;\n\t#else\n\t\treflectedLight.indirectDiffuse += vIndirectFront;\n\t#endif\n\t#include <lightmap_fragment>\n\treflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\n\t#else\n\t\treflectedLight.directDiffuse = vLightFront;\n\t#endif\n\treflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
 
-			return this;
+	var meshlambert_vert = "#define LAMBERT\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <lights_lambert_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
 
-		},
+	var meshmatcap_frag = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tvec3 viewDir = normalize( vViewPosition );\n\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n\tvec3 y = cross( viewDir, x );\n\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n\t#ifdef USE_MATCAP\n\t\tvec4 matcapColor = texture2D( matcap, uv );\n\t\tmatcapColor = matcapTexelToLinear( matcapColor );\n\t#else\n\t\tvec4 matcapColor = vec4( 1.0 );\n\t#endif\n\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
 
-		setFromPoints: function ( points ) {
+	var meshmatcap_vert = "#define MATCAP\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#ifndef FLAT_SHADED\n\t\tvNormal = normalize( transformedNormal );\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n\tvViewPosition = - mvPosition.xyz;\n}";
 
-			this.makeEmpty();
+	var meshtoon_frag = "#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_toon_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
 
-			for ( var i = 0, il = points.length; i < il; i ++ ) {
+	var meshtoon_vert = "#define TOON\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
 
-				this.expandByPoint( points[ i ] );
+	var meshphong_frag = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
 
-			}
-
-			return this;
+	var meshphong_vert = "#define PHONG\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
 
-		},
+	var meshphysical_frag = "#define STANDARD\n#ifdef PHYSICAL\n\t#define REFLECTIVITY\n\t#define CLEARCOAT\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef USE_TRANSMISSION\n\tuniform float transmission;\n\tuniform float thickness;\n\tuniform vec3 attenuationColor;\n\tuniform float attenuationDistance;\n#endif\n#ifdef REFLECTIVITY\n\tuniform float reflectivity;\n#endif\n#ifdef CLEARCOAT\n\tuniform float clearcoat;\n\tuniform float clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tuniform vec3 sheen;\n#endif\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <bsdfs>\n#include <transmission_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <lights_physical_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <clearcoat_normal_fragment_begin>\n\t#include <clearcoat_normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 totalDiffuse = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse;\n\tvec3 totalSpecular = reflectedLight.directSpecular + reflectedLight.indirectSpecular;\n\t#include <transmission_fragment>\n\tvec3 outgoingLight = totalDiffuse + totalSpecular + totalEmissiveRadiance;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
 
-		setFromCenterAndSize: function () {
+	var meshphysical_vert = "#define STANDARD\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#ifdef USE_TRANSMISSION\n\tvarying vec4 vWorldPosition;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n#ifdef USE_TRANSMISSION\n\tvWorldPosition = worldPosition;\n#endif\n}";
 
-			var v1 = new Vector3();
+	var normal_frag = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n}";
 
-			return function setFromCenterAndSize( center, size ) {
+	var normal_vert = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}";
 
-				var halfSize = v1.copy( size ).multiplyScalar( 0.5 );
+	var points_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";
 
-				this.min.copy( center ).sub( halfSize );
-				this.max.copy( center ).add( halfSize );
+	var points_vert = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\tgl_PointSize = size;\n\t#ifdef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <fog_vertex>\n}";
 
-				return this;
+	var shadow_frag = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";
 
-			};
+	var shadow_vert = "#include <common>\n#include <fog_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
 
-		}(),
+	var sprite_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";
 
-		setFromObject: function ( object ) {
+	var sprite_vert = "uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n\tvec2 scale;\n\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n\t#ifndef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) scale *= - mvPosition.z;\n\t#endif\n\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n\tvec2 rotatedPosition;\n\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n\tmvPosition.xy += rotatedPosition;\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
 
-			this.makeEmpty();
+	const ShaderChunk = {
+		alphamap_fragment: alphamap_fragment,
+		alphamap_pars_fragment: alphamap_pars_fragment,
+		alphatest_fragment: alphatest_fragment,
+		aomap_fragment: aomap_fragment,
+		aomap_pars_fragment: aomap_pars_fragment,
+		begin_vertex: begin_vertex,
+		beginnormal_vertex: beginnormal_vertex,
+		bsdfs: bsdfs,
+		bumpmap_pars_fragment: bumpmap_pars_fragment,
+		clipping_planes_fragment: clipping_planes_fragment,
+		clipping_planes_pars_fragment: clipping_planes_pars_fragment,
+		clipping_planes_pars_vertex: clipping_planes_pars_vertex,
+		clipping_planes_vertex: clipping_planes_vertex,
+		color_fragment: color_fragment,
+		color_pars_fragment: color_pars_fragment,
+		color_pars_vertex: color_pars_vertex,
+		color_vertex: color_vertex,
+		common: common,
+		cube_uv_reflection_fragment: cube_uv_reflection_fragment,
+		defaultnormal_vertex: defaultnormal_vertex,
+		displacementmap_pars_vertex: displacementmap_pars_vertex,
+		displacementmap_vertex: displacementmap_vertex,
+		emissivemap_fragment: emissivemap_fragment,
+		emissivemap_pars_fragment: emissivemap_pars_fragment,
+		encodings_fragment: encodings_fragment,
+		encodings_pars_fragment: encodings_pars_fragment,
+		envmap_fragment: envmap_fragment,
+		envmap_common_pars_fragment: envmap_common_pars_fragment,
+		envmap_pars_fragment: envmap_pars_fragment,
+		envmap_pars_vertex: envmap_pars_vertex,
+		envmap_physical_pars_fragment: envmap_physical_pars_fragment,
+		envmap_vertex: envmap_vertex,
+		fog_vertex: fog_vertex,
+		fog_pars_vertex: fog_pars_vertex,
+		fog_fragment: fog_fragment,
+		fog_pars_fragment: fog_pars_fragment,
+		gradientmap_pars_fragment: gradientmap_pars_fragment,
+		lightmap_fragment: lightmap_fragment,
+		lightmap_pars_fragment: lightmap_pars_fragment,
+		lights_lambert_vertex: lights_lambert_vertex,
+		lights_pars_begin: lights_pars_begin,
+		lights_toon_fragment: lights_toon_fragment,
+		lights_toon_pars_fragment: lights_toon_pars_fragment,
+		lights_phong_fragment: lights_phong_fragment,
+		lights_phong_pars_fragment: lights_phong_pars_fragment,
+		lights_physical_fragment: lights_physical_fragment,
+		lights_physical_pars_fragment: lights_physical_pars_fragment,
+		lights_fragment_begin: lights_fragment_begin,
+		lights_fragment_maps: lights_fragment_maps,
+		lights_fragment_end: lights_fragment_end,
+		logdepthbuf_fragment: logdepthbuf_fragment,
+		logdepthbuf_pars_fragment: logdepthbuf_pars_fragment,
+		logdepthbuf_pars_vertex: logdepthbuf_pars_vertex,
+		logdepthbuf_vertex: logdepthbuf_vertex,
+		map_fragment: map_fragment,
+		map_pars_fragment: map_pars_fragment,
+		map_particle_fragment: map_particle_fragment,
+		map_particle_pars_fragment: map_particle_pars_fragment,
+		metalnessmap_fragment: metalnessmap_fragment,
+		metalnessmap_pars_fragment: metalnessmap_pars_fragment,
+		morphnormal_vertex: morphnormal_vertex,
+		morphtarget_pars_vertex: morphtarget_pars_vertex,
+		morphtarget_vertex: morphtarget_vertex,
+		normal_fragment_begin: normal_fragment_begin,
+		normal_fragment_maps: normal_fragment_maps,
+		normalmap_pars_fragment: normalmap_pars_fragment,
+		clearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,
+		clearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,
+		clearcoat_pars_fragment: clearcoat_pars_fragment,
+		packing: packing,
+		premultiplied_alpha_fragment: premultiplied_alpha_fragment,
+		project_vertex: project_vertex,
+		dithering_fragment: dithering_fragment,
+		dithering_pars_fragment: dithering_pars_fragment,
+		roughnessmap_fragment: roughnessmap_fragment,
+		roughnessmap_pars_fragment: roughnessmap_pars_fragment,
+		shadowmap_pars_fragment: shadowmap_pars_fragment,
+		shadowmap_pars_vertex: shadowmap_pars_vertex,
+		shadowmap_vertex: shadowmap_vertex,
+		shadowmask_pars_fragment: shadowmask_pars_fragment,
+		skinbase_vertex: skinbase_vertex,
+		skinning_pars_vertex: skinning_pars_vertex,
+		skinning_vertex: skinning_vertex,
+		skinnormal_vertex: skinnormal_vertex,
+		specularmap_fragment: specularmap_fragment,
+		specularmap_pars_fragment: specularmap_pars_fragment,
+		tonemapping_fragment: tonemapping_fragment,
+		tonemapping_pars_fragment: tonemapping_pars_fragment,
+		transmission_fragment: transmission_fragment,
+		transmission_pars_fragment: transmission_pars_fragment,
+		uv_pars_fragment: uv_pars_fragment,
+		uv_pars_vertex: uv_pars_vertex,
+		uv_vertex: uv_vertex,
+		uv2_pars_fragment: uv2_pars_fragment,
+		uv2_pars_vertex: uv2_pars_vertex,
+		uv2_vertex: uv2_vertex,
+		worldpos_vertex: worldpos_vertex,
+		background_frag: background_frag,
+		background_vert: background_vert,
+		cube_frag: cube_frag,
+		cube_vert: cube_vert,
+		depth_frag: depth_frag,
+		depth_vert: depth_vert,
+		distanceRGBA_frag: distanceRGBA_frag,
+		distanceRGBA_vert: distanceRGBA_vert,
+		equirect_frag: equirect_frag,
+		equirect_vert: equirect_vert,
+		linedashed_frag: linedashed_frag,
+		linedashed_vert: linedashed_vert,
+		meshbasic_frag: meshbasic_frag,
+		meshbasic_vert: meshbasic_vert,
+		meshlambert_frag: meshlambert_frag,
+		meshlambert_vert: meshlambert_vert,
+		meshmatcap_frag: meshmatcap_frag,
+		meshmatcap_vert: meshmatcap_vert,
+		meshtoon_frag: meshtoon_frag,
+		meshtoon_vert: meshtoon_vert,
+		meshphong_frag: meshphong_frag,
+		meshphong_vert: meshphong_vert,
+		meshphysical_frag: meshphysical_frag,
+		meshphysical_vert: meshphysical_vert,
+		normal_frag: normal_frag,
+		normal_vert: normal_vert,
+		points_frag: points_frag,
+		points_vert: points_vert,
+		shadow_frag: shadow_frag,
+		shadow_vert: shadow_vert,
+		sprite_frag: sprite_frag,
+		sprite_vert: sprite_vert
+	};
 
-			return this.expandByObject( object );
+	/**
+	 * Uniforms library for shared webgl shaders
+	 */
 
+	const UniformsLib = {
+		common: {
+			diffuse: {
+				value: new Color(0xffffff)
+			},
+			opacity: {
+				value: 1.0
+			},
+			map: {
+				value: null
+			},
+			uvTransform: {
+				value: new Matrix3()
+			},
+			uv2Transform: {
+				value: new Matrix3()
+			},
+			alphaMap: {
+				value: null
+			}
 		},
-
-		clone: function () {
-
-			return new this.constructor().copy( this );
-
+		specularmap: {
+			specularMap: {
+				value: null
+			}
 		},
-
-		copy: function ( box ) {
-
-			this.min.copy( box.min );
-			this.max.copy( box.max );
-
-			return this;
-
+		envmap: {
+			envMap: {
+				value: null
+			},
+			flipEnvMap: {
+				value: -1
+			},
+			reflectivity: {
+				value: 1.0
+			},
+			refractionRatio: {
+				value: 0.98
+			},
+			maxMipLevel: {
+				value: 0
+			}
 		},
-
-		makeEmpty: function () {
-
-			this.min.x = this.min.y = this.min.z = + Infinity;
-			this.max.x = this.max.y = this.max.z = - Infinity;
-
-			return this;
-
+		aomap: {
+			aoMap: {
+				value: null
+			},
+			aoMapIntensity: {
+				value: 1
+			}
 		},
-
-		isEmpty: function () {
-
-			// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
-
-			return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );
-
+		lightmap: {
+			lightMap: {
+				value: null
+			},
+			lightMapIntensity: {
+				value: 1
+			}
 		},
-
-		getCenter: function ( target ) {
-
-			if ( target === undefined ) {
-
-				console.warn( 'THREE.Box3: .getCenter() target is now required' );
-				target = new Vector3();
-
+		emissivemap: {
+			emissiveMap: {
+				value: null
 			}
-
-			return this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );
-
 		},
-
-		getSize: function ( target ) {
-
-			if ( target === undefined ) {
-
-				console.warn( 'THREE.Box3: .getSize() target is now required' );
-				target = new Vector3();
-
+		bumpmap: {
+			bumpMap: {
+				value: null
+			},
+			bumpScale: {
+				value: 1
 			}
-
-			return this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );
-
 		},
-
-		expandByPoint: function ( point ) {
-
-			this.min.min( point );
-			this.max.max( point );
-
-			return this;
-
+		normalmap: {
+			normalMap: {
+				value: null
+			},
+			normalScale: {
+				value: new Vector2(1, 1)
+			}
 		},
-
-		expandByVector: function ( vector ) {
-
-			this.min.sub( vector );
-			this.max.add( vector );
-
-			return this;
-
+		displacementmap: {
+			displacementMap: {
+				value: null
+			},
+			displacementScale: {
+				value: 1
+			},
+			displacementBias: {
+				value: 0
+			}
 		},
-
-		expandByScalar: function ( scalar ) {
-
-			this.min.addScalar( - scalar );
-			this.max.addScalar( scalar );
-
-			return this;
-
+		roughnessmap: {
+			roughnessMap: {
+				value: null
+			}
 		},
-
-		expandByObject: function () {
-
-			// Computes the world-axis-aligned bounding box of an object (including its children),
-			// accounting for both the object's, and children's, world transforms
-
-			var scope, i, l;
-
-			var v1 = new Vector3();
-
-			function traverse( node ) {
-
-				var geometry = node.geometry;
-
-				if ( geometry !== undefined ) {
-
-					if ( geometry.isGeometry ) {
-
-						var vertices = geometry.vertices;
-
-						for ( i = 0, l = vertices.length; i < l; i ++ ) {
-
-							v1.copy( vertices[ i ] );
-							v1.applyMatrix4( node.matrixWorld );
-
-							scope.expandByPoint( v1 );
-
-						}
-
-					} else if ( geometry.isBufferGeometry ) {
-
-						var attribute = geometry.attributes.position;
-
-						if ( attribute !== undefined ) {
-
-							for ( i = 0, l = attribute.count; i < l; i ++ ) {
-
-								v1.fromBufferAttribute( attribute, i ).applyMatrix4( node.matrixWorld );
-
-								scope.expandByPoint( v1 );
-
-							}
-
-						}
-
-					}
-
-				}
-
+		metalnessmap: {
+			metalnessMap: {
+				value: null
 			}
-
-			return function expandByObject( object ) {
-
-				scope = this;
-
-				object.updateMatrixWorld( true );
-
-				object.traverse( traverse );
-
-				return this;
-
-			};
-
-		}(),
-
-		containsPoint: function ( point ) {
-
-			return point.x < this.min.x || point.x > this.max.x ||
-				point.y < this.min.y || point.y > this.max.y ||
-				point.z < this.min.z || point.z > this.max.z ? false : true;
-
 		},
-
-		containsBox: function ( box ) {
-
-			return this.min.x <= box.min.x && box.max.x <= this.max.x &&
-				this.min.y <= box.min.y && box.max.y <= this.max.y &&
-				this.min.z <= box.min.z && box.max.z <= this.max.z;
-
+		gradientmap: {
+			gradientMap: {
+				value: null
+			}
 		},
-
-		getParameter: function ( point, target ) {
-
-			// This can potentially have a divide by zero if the box
-			// has a size dimension of 0.
-
-			if ( target === undefined ) {
-
-				console.warn( 'THREE.Box3: .getParameter() target is now required' );
-				target = new Vector3();
-
+		fog: {
+			fogDensity: {
+				value: 0.00025
+			},
+			fogNear: {
+				value: 1
+			},
+			fogFar: {
+				value: 2000
+			},
+			fogColor: {
+				value: new Color(0xffffff)
+			}
+		},
+		lights: {
+			ambientLightColor: {
+				value: []
+			},
+			lightProbe: {
+				value: []
+			},
+			directionalLights: {
+				value: [],
+				properties: {
+					direction: {},
+					color: {}
+				}
+			},
+			directionalLightShadows: {
+				value: [],
+				properties: {
+					shadowBias: {},
+					shadowNormalBias: {},
+					shadowRadius: {},
+					shadowMapSize: {}
+				}
+			},
+			directionalShadowMap: {
+				value: []
+			},
+			directionalShadowMatrix: {
+				value: []
+			},
+			spotLights: {
+				value: [],
+				properties: {
+					color: {},
+					position: {},
+					direction: {},
+					distance: {},
+					coneCos: {},
+					penumbraCos: {},
+					decay: {}
+				}
+			},
+			spotLightShadows: {
+				value: [],
+				properties: {
+					shadowBias: {},
+					shadowNormalBias: {},
+					shadowRadius: {},
+					shadowMapSize: {}
+				}
+			},
+			spotShadowMap: {
+				value: []
+			},
+			spotShadowMatrix: {
+				value: []
+			},
+			pointLights: {
+				value: [],
+				properties: {
+					color: {},
+					position: {},
+					decay: {},
+					distance: {}
+				}
+			},
+			pointLightShadows: {
+				value: [],
+				properties: {
+					shadowBias: {},
+					shadowNormalBias: {},
+					shadowRadius: {},
+					shadowMapSize: {},
+					shadowCameraNear: {},
+					shadowCameraFar: {}
+				}
+			},
+			pointShadowMap: {
+				value: []
+			},
+			pointShadowMatrix: {
+				value: []
+			},
+			hemisphereLights: {
+				value: [],
+				properties: {
+					direction: {},
+					skyColor: {},
+					groundColor: {}
+				}
+			},
+			// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src
+			rectAreaLights: {
+				value: [],
+				properties: {
+					color: {},
+					position: {},
+					width: {},
+					height: {}
+				}
+			},
+			ltc_1: {
+				value: null
+			},
+			ltc_2: {
+				value: null
+			}
+		},
+		points: {
+			diffuse: {
+				value: new Color(0xffffff)
+			},
+			opacity: {
+				value: 1.0
+			},
+			size: {
+				value: 1.0
+			},
+			scale: {
+				value: 1.0
+			},
+			map: {
+				value: null
+			},
+			alphaMap: {
+				value: null
+			},
+			uvTransform: {
+				value: new Matrix3()
+			}
+		},
+		sprite: {
+			diffuse: {
+				value: new Color(0xffffff)
+			},
+			opacity: {
+				value: 1.0
+			},
+			center: {
+				value: new Vector2(0.5, 0.5)
+			},
+			rotation: {
+				value: 0.0
+			},
+			map: {
+				value: null
+			},
+			alphaMap: {
+				value: null
+			},
+			uvTransform: {
+				value: new Matrix3()
 			}
+		}
+	};
+
+	const ShaderLib = {
+		basic: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.specularmap, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.fog]),
+			vertexShader: ShaderChunk.meshbasic_vert,
+			fragmentShader: ShaderChunk.meshbasic_frag
+		},
+		lambert: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.specularmap, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.fog, UniformsLib.lights, {
+				emissive: {
+					value: new Color(0x000000)
+				}
+			}]),
+			vertexShader: ShaderChunk.meshlambert_vert,
+			fragmentShader: ShaderChunk.meshlambert_frag
+		},
+		phong: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.specularmap, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.fog, UniformsLib.lights, {
+				emissive: {
+					value: new Color(0x000000)
+				},
+				specular: {
+					value: new Color(0x111111)
+				},
+				shininess: {
+					value: 30
+				}
+			}]),
+			vertexShader: ShaderChunk.meshphong_vert,
+			fragmentShader: ShaderChunk.meshphong_frag
+		},
+		standard: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.roughnessmap, UniformsLib.metalnessmap, UniformsLib.fog, UniformsLib.lights, {
+				emissive: {
+					value: new Color(0x000000)
+				},
+				roughness: {
+					value: 1.0
+				},
+				metalness: {
+					value: 0.0
+				},
+				envMapIntensity: {
+					value: 1
+				} // temporary
 
-			return target.set(
-				( point.x - this.min.x ) / ( this.max.x - this.min.x ),
-				( point.y - this.min.y ) / ( this.max.y - this.min.y ),
-				( point.z - this.min.z ) / ( this.max.z - this.min.z )
-			);
+			}]),
+			vertexShader: ShaderChunk.meshphysical_vert,
+			fragmentShader: ShaderChunk.meshphysical_frag
+		},
+		toon: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.gradientmap, UniformsLib.fog, UniformsLib.lights, {
+				emissive: {
+					value: new Color(0x000000)
+				}
+			}]),
+			vertexShader: ShaderChunk.meshtoon_vert,
+			fragmentShader: ShaderChunk.meshtoon_frag
+		},
+		matcap: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.fog, {
+				matcap: {
+					value: null
+				}
+			}]),
+			vertexShader: ShaderChunk.meshmatcap_vert,
+			fragmentShader: ShaderChunk.meshmatcap_frag
+		},
+		points: {
+			uniforms: mergeUniforms([UniformsLib.points, UniformsLib.fog]),
+			vertexShader: ShaderChunk.points_vert,
+			fragmentShader: ShaderChunk.points_frag
+		},
+		dashed: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.fog, {
+				scale: {
+					value: 1
+				},
+				dashSize: {
+					value: 1
+				},
+				totalSize: {
+					value: 2
+				}
+			}]),
+			vertexShader: ShaderChunk.linedashed_vert,
+			fragmentShader: ShaderChunk.linedashed_frag
+		},
+		depth: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.displacementmap]),
+			vertexShader: ShaderChunk.depth_vert,
+			fragmentShader: ShaderChunk.depth_frag
+		},
+		normal: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, {
+				opacity: {
+					value: 1.0
+				}
+			}]),
+			vertexShader: ShaderChunk.normal_vert,
+			fragmentShader: ShaderChunk.normal_frag
+		},
+		sprite: {
+			uniforms: mergeUniforms([UniformsLib.sprite, UniformsLib.fog]),
+			vertexShader: ShaderChunk.sprite_vert,
+			fragmentShader: ShaderChunk.sprite_frag
+		},
+		background: {
+			uniforms: {
+				uvTransform: {
+					value: new Matrix3()
+				},
+				t2D: {
+					value: null
+				}
+			},
+			vertexShader: ShaderChunk.background_vert,
+			fragmentShader: ShaderChunk.background_frag
+		},
 
+		/* -------------------------------------------------------------------------
+		//	Cube map shader
+		 ------------------------------------------------------------------------- */
+		cube: {
+			uniforms: mergeUniforms([UniformsLib.envmap, {
+				opacity: {
+					value: 1.0
+				}
+			}]),
+			vertexShader: ShaderChunk.cube_vert,
+			fragmentShader: ShaderChunk.cube_frag
+		},
+		equirect: {
+			uniforms: {
+				tEquirect: {
+					value: null
+				}
+			},
+			vertexShader: ShaderChunk.equirect_vert,
+			fragmentShader: ShaderChunk.equirect_frag
+		},
+		distanceRGBA: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.displacementmap, {
+				referencePosition: {
+					value: new Vector3()
+				},
+				nearDistance: {
+					value: 1
+				},
+				farDistance: {
+					value: 1000
+				}
+			}]),
+			vertexShader: ShaderChunk.distanceRGBA_vert,
+			fragmentShader: ShaderChunk.distanceRGBA_frag
 		},
+		shadow: {
+			uniforms: mergeUniforms([UniformsLib.lights, UniformsLib.fog, {
+				color: {
+					value: new Color(0x00000)
+				},
+				opacity: {
+					value: 1.0
+				}
+			}]),
+			vertexShader: ShaderChunk.shadow_vert,
+			fragmentShader: ShaderChunk.shadow_frag
+		}
+	};
+	ShaderLib.physical = {
+		uniforms: mergeUniforms([ShaderLib.standard.uniforms, {
+			clearcoat: {
+				value: 0
+			},
+			clearcoatMap: {
+				value: null
+			},
+			clearcoatRoughness: {
+				value: 0
+			},
+			clearcoatRoughnessMap: {
+				value: null
+			},
+			clearcoatNormalScale: {
+				value: new Vector2(1, 1)
+			},
+			clearcoatNormalMap: {
+				value: null
+			},
+			sheen: {
+				value: new Color(0x000000)
+			},
+			transmission: {
+				value: 0
+			},
+			transmissionMap: {
+				value: null
+			},
+			transmissionSamplerSize: {
+				value: new Vector2()
+			},
+			transmissionSamplerMap: {
+				value: null
+			},
+			thickness: {
+				value: 0
+			},
+			thicknessMap: {
+				value: null
+			},
+			attenuationDistance: {
+				value: 0
+			},
+			attenuationColor: {
+				value: new Color(0x000000)
+			}
+		}]),
+		vertexShader: ShaderChunk.meshphysical_vert,
+		fragmentShader: ShaderChunk.meshphysical_frag
+	};
 
-		intersectsBox: function ( box ) {
+	function WebGLBackground(renderer, cubemaps, state, objects, premultipliedAlpha) {
+		const clearColor = new Color(0x000000);
+		let clearAlpha = 0;
+		let planeMesh;
+		let boxMesh;
+		let currentBackground = null;
+		let currentBackgroundVersion = 0;
+		let currentTonemapping = null;
 
-			// using 6 splitting planes to rule out intersections.
-			return box.max.x < this.min.x || box.min.x > this.max.x ||
-				box.max.y < this.min.y || box.min.y > this.max.y ||
-				box.max.z < this.min.z || box.min.z > this.max.z ? false : true;
+		function render(renderList, scene) {
+			let forceClear = false;
+			let background = scene.isScene === true ? scene.background : null;
 
-		},
+			if (background && background.isTexture) {
+				background = cubemaps.get(background);
+			} // Ignore background in AR
+			// TODO: Reconsider this.
 
-		intersectsSphere: ( function () {
 
-			var closestPoint = new Vector3();
+			const xr = renderer.xr;
+			const session = xr.getSession && xr.getSession();
 
-			return function intersectsSphere( sphere ) {
+			if (session && session.environmentBlendMode === 'additive') {
+				background = null;
+			}
 
-				// Find the point on the AABB closest to the sphere center.
-				this.clampPoint( sphere.center, closestPoint );
+			if (background === null) {
+				setClear(clearColor, clearAlpha);
+			} else if (background && background.isColor) {
+				setClear(background, 1);
+				forceClear = true;
+			}
 
-				// If that point is inside the sphere, the AABB and sphere intersect.
-				return closestPoint.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );
+			if (renderer.autoClear || forceClear) {
+				renderer.clear(renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil);
+			}
 
-			};
+			if (background && (background.isCubeTexture || background.mapping === CubeUVReflectionMapping)) {
+				if (boxMesh === undefined) {
+					boxMesh = new Mesh(new BoxGeometry(1, 1, 1), new ShaderMaterial({
+						name: 'BackgroundCubeMaterial',
+						uniforms: cloneUniforms(ShaderLib.cube.uniforms),
+						vertexShader: ShaderLib.cube.vertexShader,
+						fragmentShader: ShaderLib.cube.fragmentShader,
+						side: BackSide,
+						depthTest: false,
+						depthWrite: false,
+						fog: false
+					}));
+					boxMesh.geometry.deleteAttribute('normal');
+					boxMesh.geometry.deleteAttribute('uv');
 
-		} )(),
+					boxMesh.onBeforeRender = function (renderer, scene, camera) {
+						this.matrixWorld.copyPosition(camera.matrixWorld);
+					}; // enable code injection for non-built-in material
 
-		intersectsPlane: function ( plane ) {
 
-			// We compute the minimum and maximum dot product values. If those values
-			// are on the same side (back or front) of the plane, then there is no intersection.
+					Object.defineProperty(boxMesh.material, 'envMap', {
+						get: function () {
+							return this.uniforms.envMap.value;
+						}
+					});
+					objects.update(boxMesh);
+				}
+
+				boxMesh.material.uniforms.envMap.value = background;
+				boxMesh.material.uniforms.flipEnvMap.value = background.isCubeTexture && background._needsFlipEnvMap ? -1 : 1;
+
+				if (currentBackground !== background || currentBackgroundVersion !== background.version || currentTonemapping !== renderer.toneMapping) {
+					boxMesh.material.needsUpdate = true;
+					currentBackground = background;
+					currentBackgroundVersion = background.version;
+					currentTonemapping = renderer.toneMapping;
+				} // push to the pre-sorted opaque render list
+
+
+				renderList.unshift(boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null);
+			} else if (background && background.isTexture) {
+				if (planeMesh === undefined) {
+					planeMesh = new Mesh(new PlaneGeometry(2, 2), new ShaderMaterial({
+						name: 'BackgroundMaterial',
+						uniforms: cloneUniforms(ShaderLib.background.uniforms),
+						vertexShader: ShaderLib.background.vertexShader,
+						fragmentShader: ShaderLib.background.fragmentShader,
+						side: FrontSide,
+						depthTest: false,
+						depthWrite: false,
+						fog: false
+					}));
+					planeMesh.geometry.deleteAttribute('normal'); // enable code injection for non-built-in material
+
+					Object.defineProperty(planeMesh.material, 'map', {
+						get: function () {
+							return this.uniforms.t2D.value;
+						}
+					});
+					objects.update(planeMesh);
+				}
 
-			var min, max;
+				planeMesh.material.uniforms.t2D.value = background;
 
-			if ( plane.normal.x > 0 ) {
+				if (background.matrixAutoUpdate === true) {
+					background.updateMatrix();
+				}
 
-				min = plane.normal.x * this.min.x;
-				max = plane.normal.x * this.max.x;
+				planeMesh.material.uniforms.uvTransform.value.copy(background.matrix);
 
-			} else {
+				if (currentBackground !== background || currentBackgroundVersion !== background.version || currentTonemapping !== renderer.toneMapping) {
+					planeMesh.material.needsUpdate = true;
+					currentBackground = background;
+					currentBackgroundVersion = background.version;
+					currentTonemapping = renderer.toneMapping;
+				} // push to the pre-sorted opaque render list
 
-				min = plane.normal.x * this.max.x;
-				max = plane.normal.x * this.min.x;
 
+				renderList.unshift(planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null);
 			}
+		}
 
-			if ( plane.normal.y > 0 ) {
-
-				min += plane.normal.y * this.min.y;
-				max += plane.normal.y * this.max.y;
+		function setClear(color, alpha) {
+			state.buffers.color.setClear(color.r, color.g, color.b, alpha, premultipliedAlpha);
+		}
 
-			} else {
+		return {
+			getClearColor: function () {
+				return clearColor;
+			},
+			setClearColor: function (color, alpha = 1) {
+				clearColor.set(color);
+				clearAlpha = alpha;
+				setClear(clearColor, clearAlpha);
+			},
+			getClearAlpha: function () {
+				return clearAlpha;
+			},
+			setClearAlpha: function (alpha) {
+				clearAlpha = alpha;
+				setClear(clearColor, clearAlpha);
+			},
+			render: render
+		};
+	}
 
-				min += plane.normal.y * this.max.y;
-				max += plane.normal.y * this.min.y;
+	function WebGLBindingStates(gl, extensions, attributes, capabilities) {
+		const maxVertexAttributes = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
+		const extension = capabilities.isWebGL2 ? null : extensions.get('OES_vertex_array_object');
+		const vaoAvailable = capabilities.isWebGL2 || extension !== null;
+		const bindingStates = {};
+		const defaultState = createBindingState(null);
+		let currentState = defaultState;
 
-			}
+		function setup(object, material, program, geometry, index) {
+			let updateBuffers = false;
 
-			if ( plane.normal.z > 0 ) {
+			if (vaoAvailable) {
+				const state = getBindingState(geometry, program, material);
 
-				min += plane.normal.z * this.min.z;
-				max += plane.normal.z * this.max.z;
+				if (currentState !== state) {
+					currentState = state;
+					bindVertexArrayObject(currentState.object);
+				}
 
+				updateBuffers = needsUpdate(geometry, index);
+				if (updateBuffers) saveCache(geometry, index);
 			} else {
+				const wireframe = material.wireframe === true;
 
-				min += plane.normal.z * this.max.z;
-				max += plane.normal.z * this.min.z;
+				if (currentState.geometry !== geometry.id || currentState.program !== program.id || currentState.wireframe !== wireframe) {
+					currentState.geometry = geometry.id;
+					currentState.program = program.id;
+					currentState.wireframe = wireframe;
+					updateBuffers = true;
+				}
+			}
+
+			if (object.isInstancedMesh === true) {
+				updateBuffers = true;
+			}
 
+			if (index !== null) {
+				attributes.update(index, gl.ELEMENT_ARRAY_BUFFER);
 			}
 
-			return ( min <= plane.constant && max >= plane.constant );
+			if (updateBuffers) {
+				setupVertexAttributes(object, material, program, geometry);
 
-		},
+				if (index !== null) {
+					gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, attributes.get(index).buffer);
+				}
+			}
+		}
 
-		intersectsTriangle: ( function () {
+		function createVertexArrayObject() {
+			if (capabilities.isWebGL2) return gl.createVertexArray();
+			return extension.createVertexArrayOES();
+		}
 
-			// triangle centered vertices
-			var v0 = new Vector3();
-			var v1 = new Vector3();
-			var v2 = new Vector3();
+		function bindVertexArrayObject(vao) {
+			if (capabilities.isWebGL2) return gl.bindVertexArray(vao);
+			return extension.bindVertexArrayOES(vao);
+		}
 
-			// triangle edge vectors
-			var f0 = new Vector3();
-			var f1 = new Vector3();
-			var f2 = new Vector3();
+		function deleteVertexArrayObject(vao) {
+			if (capabilities.isWebGL2) return gl.deleteVertexArray(vao);
+			return extension.deleteVertexArrayOES(vao);
+		}
 
-			var testAxis = new Vector3();
+		function getBindingState(geometry, program, material) {
+			const wireframe = material.wireframe === true;
+			let programMap = bindingStates[geometry.id];
 
-			var center = new Vector3();
-			var extents = new Vector3();
+			if (programMap === undefined) {
+				programMap = {};
+				bindingStates[geometry.id] = programMap;
+			}
 
-			var triangleNormal = new Vector3();
+			let stateMap = programMap[program.id];
 
-			function satForAxes( axes ) {
+			if (stateMap === undefined) {
+				stateMap = {};
+				programMap[program.id] = stateMap;
+			}
 
-				var i, j;
+			let state = stateMap[wireframe];
 
-				for ( i = 0, j = axes.length - 3; i <= j; i += 3 ) {
+			if (state === undefined) {
+				state = createBindingState(createVertexArrayObject());
+				stateMap[wireframe] = state;
+			}
 
-					testAxis.fromArray( axes, i );
-					// project the aabb onto the seperating axis
-					var r = extents.x * Math.abs( testAxis.x ) + extents.y * Math.abs( testAxis.y ) + extents.z * Math.abs( testAxis.z );
-					// project all 3 vertices of the triangle onto the seperating axis
-					var p0 = v0.dot( testAxis );
-					var p1 = v1.dot( testAxis );
-					var p2 = v2.dot( testAxis );
-					// actual test, basically see if either of the most extreme of the triangle points intersects r
-					if ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {
+			return state;
+		}
 
-						// points of the projected triangle are outside the projected half-length of the aabb
-						// the axis is seperating and we can exit
-						return false;
+		function createBindingState(vao) {
+			const newAttributes = [];
+			const enabledAttributes = [];
+			const attributeDivisors = [];
 
-					}
+			for (let i = 0; i < maxVertexAttributes; i++) {
+				newAttributes[i] = 0;
+				enabledAttributes[i] = 0;
+				attributeDivisors[i] = 0;
+			}
 
-				}
+			return {
+				// for backward compatibility on non-VAO support browser
+				geometry: null,
+				program: null,
+				wireframe: false,
+				newAttributes: newAttributes,
+				enabledAttributes: enabledAttributes,
+				attributeDivisors: attributeDivisors,
+				object: vao,
+				attributes: {},
+				index: null
+			};
+		}
 
-				return true;
+		function needsUpdate(geometry, index) {
+			const cachedAttributes = currentState.attributes;
+			const geometryAttributes = geometry.attributes;
+			let attributesNum = 0;
 
+			for (const key in geometryAttributes) {
+				const cachedAttribute = cachedAttributes[key];
+				const geometryAttribute = geometryAttributes[key];
+				if (cachedAttribute === undefined) return true;
+				if (cachedAttribute.attribute !== geometryAttribute) return true;
+				if (cachedAttribute.data !== geometryAttribute.data) return true;
+				attributesNum++;
 			}
 
-			return function intersectsTriangle( triangle ) {
+			if (currentState.attributesNum !== attributesNum) return true;
+			if (currentState.index !== index) return true;
+			return false;
+		}
 
-				if ( this.isEmpty() ) {
+		function saveCache(geometry, index) {
+			const cache = {};
+			const attributes = geometry.attributes;
+			let attributesNum = 0;
 
-					return false;
+			for (const key in attributes) {
+				const attribute = attributes[key];
+				const data = {};
+				data.attribute = attribute;
 
+				if (attribute.data) {
+					data.data = attribute.data;
 				}
 
-				// compute box center and extents
-				this.getCenter( center );
-				extents.subVectors( this.max, center );
+				cache[key] = data;
+				attributesNum++;
+			}
+
+			currentState.attributes = cache;
+			currentState.attributesNum = attributesNum;
+			currentState.index = index;
+		}
 
-				// translate triangle to aabb origin
-				v0.subVectors( triangle.a, center );
-				v1.subVectors( triangle.b, center );
-				v2.subVectors( triangle.c, center );
+		function initAttributes() {
+			const newAttributes = currentState.newAttributes;
 
-				// compute edge vectors for triangle
-				f0.subVectors( v1, v0 );
-				f1.subVectors( v2, v1 );
-				f2.subVectors( v0, v2 );
+			for (let i = 0, il = newAttributes.length; i < il; i++) {
+				newAttributes[i] = 0;
+			}
+		}
 
-				// test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb
-				// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation
-				// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)
-				var axes = [
-					0, - f0.z, f0.y, 0, - f1.z, f1.y, 0, - f2.z, f2.y,
-					f0.z, 0, - f0.x, f1.z, 0, - f1.x, f2.z, 0, - f2.x,
-					- f0.y, f0.x, 0, - f1.y, f1.x, 0, - f2.y, f2.x, 0
-				];
-				if ( ! satForAxes( axes ) ) {
+		function enableAttribute(attribute) {
+			enableAttributeAndDivisor(attribute, 0);
+		}
 
-					return false;
+		function enableAttributeAndDivisor(attribute, meshPerAttribute) {
+			const newAttributes = currentState.newAttributes;
+			const enabledAttributes = currentState.enabledAttributes;
+			const attributeDivisors = currentState.attributeDivisors;
+			newAttributes[attribute] = 1;
 
-				}
+			if (enabledAttributes[attribute] === 0) {
+				gl.enableVertexAttribArray(attribute);
+				enabledAttributes[attribute] = 1;
+			}
 
-				// test 3 face normals from the aabb
-				axes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];
-				if ( ! satForAxes( axes ) ) {
+			if (attributeDivisors[attribute] !== meshPerAttribute) {
+				const extension = capabilities.isWebGL2 ? gl : extensions.get('ANGLE_instanced_arrays');
+				extension[capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE'](attribute, meshPerAttribute);
+				attributeDivisors[attribute] = meshPerAttribute;
+			}
+		}
 
-					return false;
+		function disableUnusedAttributes() {
+			const newAttributes = currentState.newAttributes;
+			const enabledAttributes = currentState.enabledAttributes;
 
+			for (let i = 0, il = enabledAttributes.length; i < il; i++) {
+				if (enabledAttributes[i] !== newAttributes[i]) {
+					gl.disableVertexAttribArray(i);
+					enabledAttributes[i] = 0;
 				}
+			}
+		}
 
-				// finally testing the face normal of the triangle
-				// use already existing triangle edge vectors here
-				triangleNormal.crossVectors( f0, f1 );
-				axes = [ triangleNormal.x, triangleNormal.y, triangleNormal.z ];
-				return satForAxes( axes );
-
-			};
-
-		} )(),
-
-		clampPoint: function ( point, target ) {
-
-			if ( target === undefined ) {
-
-				console.warn( 'THREE.Box3: .clampPoint() target is now required' );
-				target = new Vector3();
+		function vertexAttribPointer(index, size, type, normalized, stride, offset) {
+			if (capabilities.isWebGL2 === true && (type === gl.INT || type === gl.UNSIGNED_INT)) {
+				gl.vertexAttribIPointer(index, size, type, stride, offset);
+			} else {
+				gl.vertexAttribPointer(index, size, type, normalized, stride, offset);
+			}
+		}
 
+		function setupVertexAttributes(object, material, program, geometry) {
+			if (capabilities.isWebGL2 === false && (object.isInstancedMesh || geometry.isInstancedBufferGeometry)) {
+				if (extensions.get('ANGLE_instanced_arrays') === null) return;
 			}
 
-			return target.copy( point ).clamp( this.min, this.max );
+			initAttributes();
+			const geometryAttributes = geometry.attributes;
+			const programAttributes = program.getAttributes();
+			const materialDefaultAttributeValues = material.defaultAttributeValues;
 
-		},
+			for (const name in programAttributes) {
+				const programAttribute = programAttributes[name];
 
-		distanceToPoint: function () {
+				if (programAttribute >= 0) {
+					const geometryAttribute = geometryAttributes[name];
 
-			var v1 = new Vector3();
+					if (geometryAttribute !== undefined) {
+						const normalized = geometryAttribute.normalized;
+						const size = geometryAttribute.itemSize;
+						const attribute = attributes.get(geometryAttribute); // TODO Attribute may not be available on context restore
 
-			return function distanceToPoint( point ) {
+						if (attribute === undefined) continue;
+						const buffer = attribute.buffer;
+						const type = attribute.type;
+						const bytesPerElement = attribute.bytesPerElement;
 
-				var clampedPoint = v1.copy( point ).clamp( this.min, this.max );
-				return clampedPoint.sub( point ).length();
+						if (geometryAttribute.isInterleavedBufferAttribute) {
+							const data = geometryAttribute.data;
+							const stride = data.stride;
+							const offset = geometryAttribute.offset;
 
-			};
+							if (data && data.isInstancedInterleavedBuffer) {
+								enableAttributeAndDivisor(programAttribute, data.meshPerAttribute);
 
-		}(),
+								if (geometry._maxInstanceCount === undefined) {
+									geometry._maxInstanceCount = data.meshPerAttribute * data.count;
+								}
+							} else {
+								enableAttribute(programAttribute);
+							}
 
-		getBoundingSphere: function () {
+							gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+							vertexAttribPointer(programAttribute, size, type, normalized, stride * bytesPerElement, offset * bytesPerElement);
+						} else {
+							if (geometryAttribute.isInstancedBufferAttribute) {
+								enableAttributeAndDivisor(programAttribute, geometryAttribute.meshPerAttribute);
 
-			var v1 = new Vector3();
+								if (geometry._maxInstanceCount === undefined) {
+									geometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;
+								}
+							} else {
+								enableAttribute(programAttribute);
+							}
 
-			return function getBoundingSphere( target ) {
+							gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+							vertexAttribPointer(programAttribute, size, type, normalized, 0, 0);
+						}
+					} else if (name === 'instanceMatrix') {
+						const attribute = attributes.get(object.instanceMatrix); // TODO Attribute may not be available on context restore
+
+						if (attribute === undefined) continue;
+						const buffer = attribute.buffer;
+						const type = attribute.type;
+						enableAttributeAndDivisor(programAttribute + 0, 1);
+						enableAttributeAndDivisor(programAttribute + 1, 1);
+						enableAttributeAndDivisor(programAttribute + 2, 1);
+						enableAttributeAndDivisor(programAttribute + 3, 1);
+						gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+						gl.vertexAttribPointer(programAttribute + 0, 4, type, false, 64, 0);
+						gl.vertexAttribPointer(programAttribute + 1, 4, type, false, 64, 16);
+						gl.vertexAttribPointer(programAttribute + 2, 4, type, false, 64, 32);
+						gl.vertexAttribPointer(programAttribute + 3, 4, type, false, 64, 48);
+					} else if (name === 'instanceColor') {
+						const attribute = attributes.get(object.instanceColor); // TODO Attribute may not be available on context restore
+
+						if (attribute === undefined) continue;
+						const buffer = attribute.buffer;
+						const type = attribute.type;
+						enableAttributeAndDivisor(programAttribute, 1);
+						gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+						gl.vertexAttribPointer(programAttribute, 3, type, false, 12, 0);
+					} else if (materialDefaultAttributeValues !== undefined) {
+						const value = materialDefaultAttributeValues[name];
+
+						if (value !== undefined) {
+							switch (value.length) {
+								case 2:
+									gl.vertexAttrib2fv(programAttribute, value);
+									break;
 
-				if ( target === undefined ) {
+								case 3:
+									gl.vertexAttrib3fv(programAttribute, value);
+									break;
 
-					console.warn( 'THREE.Box3: .getBoundingSphere() target is now required' );
-					target = new Sphere();
+								case 4:
+									gl.vertexAttrib4fv(programAttribute, value);
+									break;
 
+								default:
+									gl.vertexAttrib1fv(programAttribute, value);
+							}
+						}
+					}
 				}
+			}
 
-				this.getCenter( target.center );
+			disableUnusedAttributes();
+		}
 
-				target.radius = this.getSize( v1 ).length() * 0.5;
+		function dispose() {
+			reset();
 
-				return target;
+			for (const geometryId in bindingStates) {
+				const programMap = bindingStates[geometryId];
 
-			};
+				for (const programId in programMap) {
+					const stateMap = programMap[programId];
 
-		}(),
+					for (const wireframe in stateMap) {
+						deleteVertexArrayObject(stateMap[wireframe].object);
+						delete stateMap[wireframe];
+					}
 
-		intersect: function ( box ) {
+					delete programMap[programId];
+				}
 
-			this.min.max( box.min );
-			this.max.min( box.max );
+				delete bindingStates[geometryId];
+			}
+		}
 
-			// ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.
-			if ( this.isEmpty() ) this.makeEmpty();
+		function releaseStatesOfGeometry(geometry) {
+			if (bindingStates[geometry.id] === undefined) return;
+			const programMap = bindingStates[geometry.id];
 
-			return this;
+			for (const programId in programMap) {
+				const stateMap = programMap[programId];
 
-		},
+				for (const wireframe in stateMap) {
+					deleteVertexArrayObject(stateMap[wireframe].object);
+					delete stateMap[wireframe];
+				}
 
-		union: function ( box ) {
+				delete programMap[programId];
+			}
 
-			this.min.min( box.min );
-			this.max.max( box.max );
+			delete bindingStates[geometry.id];
+		}
 
-			return this;
+		function releaseStatesOfProgram(program) {
+			for (const geometryId in bindingStates) {
+				const programMap = bindingStates[geometryId];
+				if (programMap[program.id] === undefined) continue;
+				const stateMap = programMap[program.id];
 
-		},
+				for (const wireframe in stateMap) {
+					deleteVertexArrayObject(stateMap[wireframe].object);
+					delete stateMap[wireframe];
+				}
 
-		applyMatrix4: function () {
+				delete programMap[program.id];
+			}
+		}
 
-			var points = [
-				new Vector3(),
-				new Vector3(),
-				new Vector3(),
-				new Vector3(),
-				new Vector3(),
-				new Vector3(),
-				new Vector3(),
-				new Vector3()
-			];
+		function reset() {
+			resetDefaultState();
+			if (currentState === defaultState) return;
+			currentState = defaultState;
+			bindVertexArrayObject(currentState.object);
+		} // for backward-compatilibity
 
-			return function applyMatrix4( matrix ) {
 
-				// transform of empty box is an empty box.
-				if ( this.isEmpty() ) return this;
+		function resetDefaultState() {
+			defaultState.geometry = null;
+			defaultState.program = null;
+			defaultState.wireframe = false;
+		}
 
-				// NOTE: I am using a binary pattern to specify all 2^3 combinations below
-				points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000
-				points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001
-				points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010
-				points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011
-				points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100
-				points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101
-				points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110
-				points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix );	// 111
+		return {
+			setup: setup,
+			reset: reset,
+			resetDefaultState: resetDefaultState,
+			dispose: dispose,
+			releaseStatesOfGeometry: releaseStatesOfGeometry,
+			releaseStatesOfProgram: releaseStatesOfProgram,
+			initAttributes: initAttributes,
+			enableAttribute: enableAttribute,
+			disableUnusedAttributes: disableUnusedAttributes
+		};
+	}
 
-				this.setFromPoints( points );
+	function WebGLBufferRenderer(gl, extensions, info, capabilities) {
+		const isWebGL2 = capabilities.isWebGL2;
+		let mode;
 
-				return this;
+		function setMode(value) {
+			mode = value;
+		}
 
-			};
+		function render(start, count) {
+			gl.drawArrays(mode, start, count);
+			info.update(count, mode, 1);
+		}
 
-		}(),
+		function renderInstances(start, count, primcount) {
+			if (primcount === 0) return;
+			let extension, methodName;
 
-		translate: function ( offset ) {
+			if (isWebGL2) {
+				extension = gl;
+				methodName = 'drawArraysInstanced';
+			} else {
+				extension = extensions.get('ANGLE_instanced_arrays');
+				methodName = 'drawArraysInstancedANGLE';
 
-			this.min.add( offset );
-			this.max.add( offset );
+				if (extension === null) {
+					console.error('THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.');
+					return;
+				}
+			}
 
-			return this;
+			extension[methodName](mode, start, count, primcount);
+			info.update(count, mode, primcount);
+		} //
 
-		},
 
-		equals: function ( box ) {
+		this.setMode = setMode;
+		this.render = render;
+		this.renderInstances = renderInstances;
+	}
 
-			return box.min.equals( this.min ) && box.max.equals( this.max );
+	function WebGLCapabilities(gl, extensions, parameters) {
+		let maxAnisotropy;
 
-		}
+		function getMaxAnisotropy() {
+			if (maxAnisotropy !== undefined) return maxAnisotropy;
 
-	} );
+			if (extensions.has('EXT_texture_filter_anisotropic') === true) {
+				const extension = extensions.get('EXT_texture_filter_anisotropic');
+				maxAnisotropy = gl.getParameter(extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT);
+			} else {
+				maxAnisotropy = 0;
+			}
 
-	/**
-	 * @author bhouston / http://clara.io
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+			return maxAnisotropy;
+		}
 
-	function Sphere( center, radius ) {
+		function getMaxPrecision(precision) {
+			if (precision === 'highp') {
+				if (gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.HIGH_FLOAT).precision > 0 && gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT).precision > 0) {
+					return 'highp';
+				}
 
-		this.center = ( center !== undefined ) ? center : new Vector3();
-		this.radius = ( radius !== undefined ) ? radius : 0;
+				precision = 'mediump';
+			}
 
-	}
+			if (precision === 'mediump') {
+				if (gl.getShaderPrecisionFormat(gl.VERTEX_SHADER, gl.MEDIUM_FLOAT).precision > 0 && gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT).precision > 0) {
+					return 'mediump';
+				}
+			}
 
-	Object.assign( Sphere.prototype, {
+			return 'lowp';
+		}
+		/* eslint-disable no-undef */
 
-		set: function ( center, radius ) {
 
-			this.center.copy( center );
-			this.radius = radius;
+		const isWebGL2 = typeof WebGL2RenderingContext !== 'undefined' && gl instanceof WebGL2RenderingContext || typeof WebGL2ComputeRenderingContext !== 'undefined' && gl instanceof WebGL2ComputeRenderingContext;
+		/* eslint-enable no-undef */
 
-			return this;
+		let precision = parameters.precision !== undefined ? parameters.precision : 'highp';
+		const maxPrecision = getMaxPrecision(precision);
 
-		},
+		if (maxPrecision !== precision) {
+			console.warn('THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.');
+			precision = maxPrecision;
+		}
 
-		setFromPoints: function () {
+		const drawBuffers = isWebGL2 || extensions.has('WEBGL_draw_buffers');
+		const logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;
+		const maxTextures = gl.getParameter(gl.MAX_TEXTURE_IMAGE_UNITS);
+		const maxVertexTextures = gl.getParameter(gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS);
+		const maxTextureSize = gl.getParameter(gl.MAX_TEXTURE_SIZE);
+		const maxCubemapSize = gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE);
+		const maxAttributes = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
+		const maxVertexUniforms = gl.getParameter(gl.MAX_VERTEX_UNIFORM_VECTORS);
+		const maxVaryings = gl.getParameter(gl.MAX_VARYING_VECTORS);
+		const maxFragmentUniforms = gl.getParameter(gl.MAX_FRAGMENT_UNIFORM_VECTORS);
+		const vertexTextures = maxVertexTextures > 0;
+		const floatFragmentTextures = isWebGL2 || extensions.has('OES_texture_float');
+		const floatVertexTextures = vertexTextures && floatFragmentTextures;
+		const maxSamples = isWebGL2 ? gl.getParameter(gl.MAX_SAMPLES) : 0;
+		return {
+			isWebGL2: isWebGL2,
+			drawBuffers: drawBuffers,
+			getMaxAnisotropy: getMaxAnisotropy,
+			getMaxPrecision: getMaxPrecision,
+			precision: precision,
+			logarithmicDepthBuffer: logarithmicDepthBuffer,
+			maxTextures: maxTextures,
+			maxVertexTextures: maxVertexTextures,
+			maxTextureSize: maxTextureSize,
+			maxCubemapSize: maxCubemapSize,
+			maxAttributes: maxAttributes,
+			maxVertexUniforms: maxVertexUniforms,
+			maxVaryings: maxVaryings,
+			maxFragmentUniforms: maxFragmentUniforms,
+			vertexTextures: vertexTextures,
+			floatFragmentTextures: floatFragmentTextures,
+			floatVertexTextures: floatVertexTextures,
+			maxSamples: maxSamples
+		};
+	}
 
-			var box = new Box3();
+	function WebGLClipping(properties) {
+		const scope = this;
+		let globalState = null,
+				numGlobalPlanes = 0,
+				localClippingEnabled = false,
+				renderingShadows = false;
+		const plane = new Plane(),
+					viewNormalMatrix = new Matrix3(),
+					uniform = {
+			value: null,
+			needsUpdate: false
+		};
+		this.uniform = uniform;
+		this.numPlanes = 0;
+		this.numIntersection = 0;
 
-			return function setFromPoints( points, optionalCenter ) {
+		this.init = function (planes, enableLocalClipping, camera) {
+			const enabled = planes.length !== 0 || enableLocalClipping || // enable state of previous frame - the clipping code has to
+			// run another frame in order to reset the state:
+			numGlobalPlanes !== 0 || localClippingEnabled;
+			localClippingEnabled = enableLocalClipping;
+			globalState = projectPlanes(planes, camera, 0);
+			numGlobalPlanes = planes.length;
+			return enabled;
+		};
 
-				var center = this.center;
+		this.beginShadows = function () {
+			renderingShadows = true;
+			projectPlanes(null);
+		};
 
-				if ( optionalCenter !== undefined ) {
+		this.endShadows = function () {
+			renderingShadows = false;
+			resetGlobalState();
+		};
 
-					center.copy( optionalCenter );
+		this.setState = function (material, camera, useCache) {
+			const planes = material.clippingPlanes,
+						clipIntersection = material.clipIntersection,
+						clipShadows = material.clipShadows;
+			const materialProperties = properties.get(material);
 
+			if (!localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && !clipShadows) {
+				// there's no local clipping
+				if (renderingShadows) {
+					// there's no global clipping
+					projectPlanes(null);
 				} else {
+					resetGlobalState();
+				}
+			} else {
+				const nGlobal = renderingShadows ? 0 : numGlobalPlanes,
+							lGlobal = nGlobal * 4;
+				let dstArray = materialProperties.clippingState || null;
+				uniform.value = dstArray; // ensure unique state
 
-					box.setFromPoints( points ).getCenter( center );
+				dstArray = projectPlanes(planes, camera, lGlobal, useCache);
 
+				for (let i = 0; i !== lGlobal; ++i) {
+					dstArray[i] = globalState[i];
 				}
 
-				var maxRadiusSq = 0;
-
-				for ( var i = 0, il = points.length; i < il; i ++ ) {
+				materialProperties.clippingState = dstArray;
+				this.numIntersection = clipIntersection ? this.numPlanes : 0;
+				this.numPlanes += nGlobal;
+			}
+		};
 
-					maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );
+		function resetGlobalState() {
+			if (uniform.value !== globalState) {
+				uniform.value = globalState;
+				uniform.needsUpdate = numGlobalPlanes > 0;
+			}
 
-				}
+			scope.numPlanes = numGlobalPlanes;
+			scope.numIntersection = 0;
+		}
 
-				this.radius = Math.sqrt( maxRadiusSq );
+		function projectPlanes(planes, camera, dstOffset, skipTransform) {
+			const nPlanes = planes !== null ? planes.length : 0;
+			let dstArray = null;
 
-				return this;
+			if (nPlanes !== 0) {
+				dstArray = uniform.value;
 
-			};
+				if (skipTransform !== true || dstArray === null) {
+					const flatSize = dstOffset + nPlanes * 4,
+								viewMatrix = camera.matrixWorldInverse;
+					viewNormalMatrix.getNormalMatrix(viewMatrix);
 
-		}(),
+					if (dstArray === null || dstArray.length < flatSize) {
+						dstArray = new Float32Array(flatSize);
+					}
 
-		clone: function () {
+					for (let i = 0, i4 = dstOffset; i !== nPlanes; ++i, i4 += 4) {
+						plane.copy(planes[i]).applyMatrix4(viewMatrix, viewNormalMatrix);
+						plane.normal.toArray(dstArray, i4);
+						dstArray[i4 + 3] = plane.constant;
+					}
+				}
 
-			return new this.constructor().copy( this );
+				uniform.value = dstArray;
+				uniform.needsUpdate = true;
+			}
 
-		},
+			scope.numPlanes = nPlanes;
+			scope.numIntersection = 0;
+			return dstArray;
+		}
+	}
 
-		copy: function ( sphere ) {
+	function WebGLCubeMaps(renderer) {
+		let cubemaps = new WeakMap();
 
-			this.center.copy( sphere.center );
-			this.radius = sphere.radius;
+		function mapTextureMapping(texture, mapping) {
+			if (mapping === EquirectangularReflectionMapping) {
+				texture.mapping = CubeReflectionMapping;
+			} else if (mapping === EquirectangularRefractionMapping) {
+				texture.mapping = CubeRefractionMapping;
+			}
 
-			return this;
+			return texture;
+		}
 
-		},
+		function get(texture) {
+			if (texture && texture.isTexture) {
+				const mapping = texture.mapping;
 
-		empty: function () {
+				if (mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping) {
+					if (cubemaps.has(texture)) {
+						const cubemap = cubemaps.get(texture).texture;
+						return mapTextureMapping(cubemap, texture.mapping);
+					} else {
+						const image = texture.image;
+
+						if (image && image.height > 0) {
+							const currentRenderTarget = renderer.getRenderTarget();
+							const renderTarget = new WebGLCubeRenderTarget(image.height / 2);
+							renderTarget.fromEquirectangularTexture(renderer, texture);
+							cubemaps.set(texture, renderTarget);
+							renderer.setRenderTarget(currentRenderTarget);
+							texture.addEventListener('dispose', onTextureDispose);
+							return mapTextureMapping(renderTarget.texture, texture.mapping);
+						} else {
+							// image not yet ready. try the conversion next frame
+							return null;
+						}
+					}
+				}
+			}
 
-			return ( this.radius <= 0 );
+			return texture;
+		}
 
-		},
+		function onTextureDispose(event) {
+			const texture = event.target;
+			texture.removeEventListener('dispose', onTextureDispose);
+			const cubemap = cubemaps.get(texture);
 
-		containsPoint: function ( point ) {
+			if (cubemap !== undefined) {
+				cubemaps.delete(texture);
+				cubemap.dispose();
+			}
+		}
 
-			return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );
+		function dispose() {
+			cubemaps = new WeakMap();
+		}
 
-		},
+		return {
+			get: get,
+			dispose: dispose
+		};
+	}
 
-		distanceToPoint: function ( point ) {
+	function WebGLExtensions(gl) {
+		const extensions = {};
 
-			return ( point.distanceTo( this.center ) - this.radius );
+		function getExtension(name) {
+			if (extensions[name] !== undefined) {
+				return extensions[name];
+			}
 
-		},
+			let extension;
 
-		intersectsSphere: function ( sphere ) {
+			switch (name) {
+				case 'WEBGL_depth_texture':
+					extension = gl.getExtension('WEBGL_depth_texture') || gl.getExtension('MOZ_WEBGL_depth_texture') || gl.getExtension('WEBKIT_WEBGL_depth_texture');
+					break;
 
-			var radiusSum = this.radius + sphere.radius;
+				case 'EXT_texture_filter_anisotropic':
+					extension = gl.getExtension('EXT_texture_filter_anisotropic') || gl.getExtension('MOZ_EXT_texture_filter_anisotropic') || gl.getExtension('WEBKIT_EXT_texture_filter_anisotropic');
+					break;
 
-			return sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );
+				case 'WEBGL_compressed_texture_s3tc':
+					extension = gl.getExtension('WEBGL_compressed_texture_s3tc') || gl.getExtension('MOZ_WEBGL_compressed_texture_s3tc') || gl.getExtension('WEBKIT_WEBGL_compressed_texture_s3tc');
+					break;
 
-		},
+				case 'WEBGL_compressed_texture_pvrtc':
+					extension = gl.getExtension('WEBGL_compressed_texture_pvrtc') || gl.getExtension('WEBKIT_WEBGL_compressed_texture_pvrtc');
+					break;
 
-		intersectsBox: function ( box ) {
+				default:
+					extension = gl.getExtension(name);
+			}
 
-			return box.intersectsSphere( this );
+			extensions[name] = extension;
+			return extension;
+		}
 
-		},
+		return {
+			has: function (name) {
+				return getExtension(name) !== null;
+			},
+			init: function (capabilities) {
+				if (capabilities.isWebGL2) {
+					getExtension('EXT_color_buffer_float');
+				} else {
+					getExtension('WEBGL_depth_texture');
+					getExtension('OES_texture_float');
+					getExtension('OES_texture_half_float');
+					getExtension('OES_texture_half_float_linear');
+					getExtension('OES_standard_derivatives');
+					getExtension('OES_element_index_uint');
+					getExtension('OES_vertex_array_object');
+					getExtension('ANGLE_instanced_arrays');
+				}
+
+				getExtension('OES_texture_float_linear');
+				getExtension('EXT_color_buffer_half_float');
+			},
+			get: function (name) {
+				const extension = getExtension(name);
 
-		intersectsPlane: function ( plane ) {
+				if (extension === null) {
+					console.warn('THREE.WebGLRenderer: ' + name + ' extension not supported.');
+				}
 
-			return Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;
+				return extension;
+			}
+		};
+	}
 
-		},
+	function WebGLGeometries(gl, attributes, info, bindingStates) {
+		const geometries = {};
+		const wireframeAttributes = new WeakMap();
 
-		clampPoint: function ( point, target ) {
+		function onGeometryDispose(event) {
+			const geometry = event.target;
 
-			var deltaLengthSq = this.center.distanceToSquared( point );
+			if (geometry.index !== null) {
+				attributes.remove(geometry.index);
+			}
 
-			if ( target === undefined ) {
+			for (const name in geometry.attributes) {
+				attributes.remove(geometry.attributes[name]);
+			}
 
-				console.warn( 'THREE.Sphere: .clampPoint() target is now required' );
-				target = new Vector3();
+			geometry.removeEventListener('dispose', onGeometryDispose);
+			delete geometries[geometry.id];
+			const attribute = wireframeAttributes.get(geometry);
 
+			if (attribute) {
+				attributes.remove(attribute);
+				wireframeAttributes.delete(geometry);
 			}
 
-			target.copy( point );
+			bindingStates.releaseStatesOfGeometry(geometry);
 
-			if ( deltaLengthSq > ( this.radius * this.radius ) ) {
+			if (geometry.isInstancedBufferGeometry === true) {
+				delete geometry._maxInstanceCount;
+			} //
 
-				target.sub( this.center ).normalize();
-				target.multiplyScalar( this.radius ).add( this.center );
 
-			}
+			info.memory.geometries--;
+		}
 
-			return target;
+		function get(object, geometry) {
+			if (geometries[geometry.id] === true) return geometry;
+			geometry.addEventListener('dispose', onGeometryDispose);
+			geometries[geometry.id] = true;
+			info.memory.geometries++;
+			return geometry;
+		}
 
-		},
+		function update(geometry) {
+			const geometryAttributes = geometry.attributes; // Updating index buffer in VAO now. See WebGLBindingStates.
+
+			for (const name in geometryAttributes) {
+				attributes.update(geometryAttributes[name], gl.ARRAY_BUFFER);
+			} // morph targets
 
-		getBoundingBox: function ( target ) {
 
-			if ( target === undefined ) {
+			const morphAttributes = geometry.morphAttributes;
 
-				console.warn( 'THREE.Sphere: .getBoundingBox() target is now required' );
-				target = new Box3();
+			for (const name in morphAttributes) {
+				const array = morphAttributes[name];
 
+				for (let i = 0, l = array.length; i < l; i++) {
+					attributes.update(array[i], gl.ARRAY_BUFFER);
+				}
 			}
+		}
 
-			target.set( this.center, this.center );
-			target.expandByScalar( this.radius );
+		function updateWireframeAttribute(geometry) {
+			const indices = [];
+			const geometryIndex = geometry.index;
+			const geometryPosition = geometry.attributes.position;
+			let version = 0;
 
-			return target;
+			if (geometryIndex !== null) {
+				const array = geometryIndex.array;
+				version = geometryIndex.version;
 
-		},
+				for (let i = 0, l = array.length; i < l; i += 3) {
+					const a = array[i + 0];
+					const b = array[i + 1];
+					const c = array[i + 2];
+					indices.push(a, b, b, c, c, a);
+				}
+			} else {
+				const array = geometryPosition.array;
+				version = geometryPosition.version;
 
-		applyMatrix4: function ( matrix ) {
+				for (let i = 0, l = array.length / 3 - 1; i < l; i += 3) {
+					const a = i + 0;
+					const b = i + 1;
+					const c = i + 2;
+					indices.push(a, b, b, c, c, a);
+				}
+			}
 
-			this.center.applyMatrix4( matrix );
-			this.radius = this.radius * matrix.getMaxScaleOnAxis();
+			const attribute = new (arrayMax(indices) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute)(indices, 1);
+			attribute.version = version; // Updating index buffer in VAO now. See WebGLBindingStates
+			//
 
-			return this;
+			const previousAttribute = wireframeAttributes.get(geometry);
+			if (previousAttribute) attributes.remove(previousAttribute); //
 
-		},
+			wireframeAttributes.set(geometry, attribute);
+		}
 
-		translate: function ( offset ) {
+		function getWireframeAttribute(geometry) {
+			const currentAttribute = wireframeAttributes.get(geometry);
 
-			this.center.add( offset );
+			if (currentAttribute) {
+				const geometryIndex = geometry.index;
 
-			return this;
+				if (geometryIndex !== null) {
+					// if the attribute is obsolete, create a new one
+					if (currentAttribute.version < geometryIndex.version) {
+						updateWireframeAttribute(geometry);
+					}
+				}
+			} else {
+				updateWireframeAttribute(geometry);
+			}
 
-		},
+			return wireframeAttributes.get(geometry);
+		}
 
-		equals: function ( sphere ) {
+		return {
+			get: get,
+			update: update,
+			getWireframeAttribute: getWireframeAttribute
+		};
+	}
 
-			return sphere.center.equals( this.center ) && ( sphere.radius === this.radius );
+	function WebGLIndexedBufferRenderer(gl, extensions, info, capabilities) {
+		const isWebGL2 = capabilities.isWebGL2;
+		let mode;
 
+		function setMode(value) {
+			mode = value;
 		}
 
-	} );
-
-	/**
-	 * @author bhouston / http://clara.io
-	 */
+		let type, bytesPerElement;
 
-	function Plane( normal, constant ) {
+		function setIndex(value) {
+			type = value.type;
+			bytesPerElement = value.bytesPerElement;
+		}
 
-		// normal is assumed to be normalized
+		function render(start, count) {
+			gl.drawElements(mode, count, type, start * bytesPerElement);
+			info.update(count, mode, 1);
+		}
 
-		this.normal = ( normal !== undefined ) ? normal : new Vector3( 1, 0, 0 );
-		this.constant = ( constant !== undefined ) ? constant : 0;
+		function renderInstances(start, count, primcount) {
+			if (primcount === 0) return;
+			let extension, methodName;
 
-	}
+			if (isWebGL2) {
+				extension = gl;
+				methodName = 'drawElementsInstanced';
+			} else {
+				extension = extensions.get('ANGLE_instanced_arrays');
+				methodName = 'drawElementsInstancedANGLE';
 
-	Object.assign( Plane.prototype, {
+				if (extension === null) {
+					console.error('THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.');
+					return;
+				}
+			}
 
-		set: function ( normal, constant ) {
+			extension[methodName](mode, count, type, start * bytesPerElement, primcount);
+			info.update(count, mode, primcount);
+		} //
 
-			this.normal.copy( normal );
-			this.constant = constant;
 
-			return this;
-
-		},
-
-		setComponents: function ( x, y, z, w ) {
-
-			this.normal.set( x, y, z );
-			this.constant = w;
-
-			return this;
-
-		},
+		this.setMode = setMode;
+		this.setIndex = setIndex;
+		this.render = render;
+		this.renderInstances = renderInstances;
+	}
 
-		setFromNormalAndCoplanarPoint: function ( normal, point ) {
+	function WebGLInfo(gl) {
+		const memory = {
+			geometries: 0,
+			textures: 0
+		};
+		const render = {
+			frame: 0,
+			calls: 0,
+			triangles: 0,
+			points: 0,
+			lines: 0
+		};
 
-			this.normal.copy( normal );
-			this.constant = - point.dot( this.normal );
+		function update(count, mode, instanceCount) {
+			render.calls++;
 
-			return this;
+			switch (mode) {
+				case gl.TRIANGLES:
+					render.triangles += instanceCount * (count / 3);
+					break;
 
-		},
+				case gl.LINES:
+					render.lines += instanceCount * (count / 2);
+					break;
 
-		setFromCoplanarPoints: function () {
+				case gl.LINE_STRIP:
+					render.lines += instanceCount * (count - 1);
+					break;
 
-			var v1 = new Vector3();
-			var v2 = new Vector3();
+				case gl.LINE_LOOP:
+					render.lines += instanceCount * count;
+					break;
 
-			return function setFromCoplanarPoints( a, b, c ) {
+				case gl.POINTS:
+					render.points += instanceCount * count;
+					break;
 
-				var normal = v1.subVectors( c, b ).cross( v2.subVectors( a, b ) ).normalize();
+				default:
+					console.error('THREE.WebGLInfo: Unknown draw mode:', mode);
+					break;
+			}
+		}
 
-				// Q: should an error be thrown if normal is zero (e.g. degenerate plane)?
+		function reset() {
+			render.frame++;
+			render.calls = 0;
+			render.triangles = 0;
+			render.points = 0;
+			render.lines = 0;
+		}
 
-				this.setFromNormalAndCoplanarPoint( normal, a );
+		return {
+			memory: memory,
+			render: render,
+			programs: null,
+			autoReset: true,
+			reset: reset,
+			update: update
+		};
+	}
 
-				return this;
+	function numericalSort(a, b) {
+		return a[0] - b[0];
+	}
 
-			};
+	function absNumericalSort(a, b) {
+		return Math.abs(b[1]) - Math.abs(a[1]);
+	}
 
-		}(),
+	function WebGLMorphtargets(gl) {
+		const influencesList = {};
+		const morphInfluences = new Float32Array(8);
+		const workInfluences = [];
 
-		clone: function () {
+		for (let i = 0; i < 8; i++) {
+			workInfluences[i] = [i, 0];
+		}
 
-			return new this.constructor().copy( this );
+		function update(object, geometry, material, program) {
+			const objectInfluences = object.morphTargetInfluences; // When object doesn't have morph target influences defined, we treat it as a 0-length array
+			// This is important to make sure we set up morphTargetBaseInfluence / morphTargetInfluences
 
-		},
+			const length = objectInfluences === undefined ? 0 : objectInfluences.length;
+			let influences = influencesList[geometry.id];
 
-		copy: function ( plane ) {
+			if (influences === undefined || influences.length !== length) {
+				// initialise list
+				influences = [];
 
-			this.normal.copy( plane.normal );
-			this.constant = plane.constant;
+				for (let i = 0; i < length; i++) {
+					influences[i] = [i, 0];
+				}
 
-			return this;
+				influencesList[geometry.id] = influences;
+			} // Collect influences
 
-		},
 
-		normalize: function () {
+			for (let i = 0; i < length; i++) {
+				const influence = influences[i];
+				influence[0] = i;
+				influence[1] = objectInfluences[i];
+			}
 
-			// Note: will lead to a divide by zero if the plane is invalid.
+			influences.sort(absNumericalSort);
 
-			var inverseNormalLength = 1.0 / this.normal.length();
-			this.normal.multiplyScalar( inverseNormalLength );
-			this.constant *= inverseNormalLength;
+			for (let i = 0; i < 8; i++) {
+				if (i < length && influences[i][1]) {
+					workInfluences[i][0] = influences[i][0];
+					workInfluences[i][1] = influences[i][1];
+				} else {
+					workInfluences[i][0] = Number.MAX_SAFE_INTEGER;
+					workInfluences[i][1] = 0;
+				}
+			}
 
-			return this;
+			workInfluences.sort(numericalSort);
+			const morphTargets = material.morphTargets && geometry.morphAttributes.position;
+			const morphNormals = material.morphNormals && geometry.morphAttributes.normal;
+			let morphInfluencesSum = 0;
 
-		},
+			for (let i = 0; i < 8; i++) {
+				const influence = workInfluences[i];
+				const index = influence[0];
+				const value = influence[1];
 
-		negate: function () {
+				if (index !== Number.MAX_SAFE_INTEGER && value) {
+					if (morphTargets && geometry.getAttribute('morphTarget' + i) !== morphTargets[index]) {
+						geometry.setAttribute('morphTarget' + i, morphTargets[index]);
+					}
 
-			this.constant *= - 1;
-			this.normal.negate();
+					if (morphNormals && geometry.getAttribute('morphNormal' + i) !== morphNormals[index]) {
+						geometry.setAttribute('morphNormal' + i, morphNormals[index]);
+					}
 
-			return this;
+					morphInfluences[i] = value;
+					morphInfluencesSum += value;
+				} else {
+					if (morphTargets && geometry.hasAttribute('morphTarget' + i) === true) {
+						geometry.deleteAttribute('morphTarget' + i);
+					}
 
-		},
+					if (morphNormals && geometry.hasAttribute('morphNormal' + i) === true) {
+						geometry.deleteAttribute('morphNormal' + i);
+					}
 
-		distanceToPoint: function ( point ) {
+					morphInfluences[i] = 0;
+				}
+			} // GLSL shader uses formula baseinfluence * base + sum(target * influence)
+			// This allows us to switch between absolute morphs and relative morphs without changing shader code
+			// When baseinfluence = 1 - sum(influence), the above is equivalent to sum((target - base) * influence)
 
-			return this.normal.dot( point ) + this.constant;
 
-		},
+			const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;
+			program.getUniforms().setValue(gl, 'morphTargetBaseInfluence', morphBaseInfluence);
+			program.getUniforms().setValue(gl, 'morphTargetInfluences', morphInfluences);
+		}
 
-		distanceToSphere: function ( sphere ) {
+		return {
+			update: update
+		};
+	}
 
-			return this.distanceToPoint( sphere.center ) - sphere.radius;
+	function WebGLObjects(gl, geometries, attributes, info) {
+		let updateMap = new WeakMap();
 
-		},
+		function update(object) {
+			const frame = info.render.frame;
+			const geometry = object.geometry;
+			const buffergeometry = geometries.get(object, geometry); // Update once per frame
 
-		projectPoint: function ( point, target ) {
+			if (updateMap.get(buffergeometry) !== frame) {
+				geometries.update(buffergeometry);
+				updateMap.set(buffergeometry, frame);
+			}
 
-			if ( target === undefined ) {
+			if (object.isInstancedMesh) {
+				if (object.hasEventListener('dispose', onInstancedMeshDispose) === false) {
+					object.addEventListener('dispose', onInstancedMeshDispose);
+				}
 
-				console.warn( 'THREE.Plane: .projectPoint() target is now required' );
-				target = new Vector3();
+				attributes.update(object.instanceMatrix, gl.ARRAY_BUFFER);
 
+				if (object.instanceColor !== null) {
+					attributes.update(object.instanceColor, gl.ARRAY_BUFFER);
+				}
 			}
 
-			return target.copy( this.normal ).multiplyScalar( - this.distanceToPoint( point ) ).add( point );
-
-		},
+			return buffergeometry;
+		}
 
-		intersectLine: function () {
+		function dispose() {
+			updateMap = new WeakMap();
+		}
 
-			var v1 = new Vector3();
+		function onInstancedMeshDispose(event) {
+			const instancedMesh = event.target;
+			instancedMesh.removeEventListener('dispose', onInstancedMeshDispose);
+			attributes.remove(instancedMesh.instanceMatrix);
+			if (instancedMesh.instanceColor !== null) attributes.remove(instancedMesh.instanceColor);
+		}
 
-			return function intersectLine( line, target ) {
+		return {
+			update: update,
+			dispose: dispose
+		};
+	}
 
-				if ( target === undefined ) {
+	class DataTexture2DArray extends Texture {
+		constructor(data = null, width = 1, height = 1, depth = 1) {
+			super(null);
+			this.image = {
+				data,
+				width,
+				height,
+				depth
+			};
+			this.magFilter = NearestFilter;
+			this.minFilter = NearestFilter;
+			this.wrapR = ClampToEdgeWrapping;
+			this.generateMipmaps = false;
+			this.flipY = false;
+			this.unpackAlignment = 1;
+			this.needsUpdate = true;
+		}
 
-					console.warn( 'THREE.Plane: .intersectLine() target is now required' );
-					target = new Vector3();
+	}
 
-				}
+	DataTexture2DArray.prototype.isDataTexture2DArray = true;
 
-				var direction = line.delta( v1 );
+	class DataTexture3D extends Texture {
+		constructor(data = null, width = 1, height = 1, depth = 1) {
+			// We're going to add .setXXX() methods for setting properties later.
+			// Users can still set in DataTexture3D directly.
+			//
+			//	const texture = new THREE.DataTexture3D( data, width, height, depth );
+			// 	texture.anisotropy = 16;
+			//
+			// See #14839
+			super(null);
+			this.image = {
+				data,
+				width,
+				height,
+				depth
+			};
+			this.magFilter = NearestFilter;
+			this.minFilter = NearestFilter;
+			this.wrapR = ClampToEdgeWrapping;
+			this.generateMipmaps = false;
+			this.flipY = false;
+			this.unpackAlignment = 1;
+			this.needsUpdate = true;
+		}
 
-				var denominator = this.normal.dot( direction );
+	}
 
-				if ( denominator === 0 ) {
+	DataTexture3D.prototype.isDataTexture3D = true;
 
-					// line is coplanar, return origin
-					if ( this.distanceToPoint( line.start ) === 0 ) {
+	/**
+	 * Uniforms of a program.
+	 * Those form a tree structure with a special top-level container for the root,
+	 * which you get by calling 'new WebGLUniforms( gl, program )'.
+	 *
+	 *
+	 * Properties of inner nodes including the top-level container:
+	 *
+	 * .seq - array of nested uniforms
+	 * .map - nested uniforms by name
+	 *
+	 *
+	 * Methods of all nodes except the top-level container:
+	 *
+	 * .setValue( gl, value, [textures] )
+	 *
+	 * 		uploads a uniform value(s)
+	 *		the 'textures' parameter is needed for sampler uniforms
+	 *
+	 *
+	 * Static methods of the top-level container (textures factorizations):
+	 *
+	 * .upload( gl, seq, values, textures )
+	 *
+	 * 		sets uniforms in 'seq' to 'values[id].value'
+	 *
+	 * .seqWithValue( seq, values ) : filteredSeq
+	 *
+	 * 		filters 'seq' entries with corresponding entry in values
+	 *
+	 *
+	 * Methods of the top-level container (textures factorizations):
+	 *
+	 * .setValue( gl, name, value, textures )
+	 *
+	 * 		sets uniform with	name 'name' to 'value'
+	 *
+	 * .setOptional( gl, obj, prop )
+	 *
+	 * 		like .set for an optional property of the object
+	 *
+	 */
+	const emptyTexture = new Texture();
+	const emptyTexture2dArray = new DataTexture2DArray();
+	const emptyTexture3d = new DataTexture3D();
+	const emptyCubeTexture = new CubeTexture(); // --- Utilities ---
+	// Array Caches (provide typed arrays for temporary by size)
 
-						return target.copy( line.start );
+	const arrayCacheF32 = [];
+	const arrayCacheI32 = []; // Float32Array caches used for uploading Matrix uniforms
 
-					}
+	const mat4array = new Float32Array(16);
+	const mat3array = new Float32Array(9);
+	const mat2array = new Float32Array(4); // Flattening for arrays of vectors and matrices
 
-					// Unsure if this is the correct method to handle this case.
-					return undefined;
+	function flatten(array, nBlocks, blockSize) {
+		const firstElem = array[0];
+		if (firstElem <= 0 || firstElem > 0) return array; // unoptimized: ! isNaN( firstElem )
+		// see http://jacksondunstan.com/articles/983
 
-				}
+		const n = nBlocks * blockSize;
+		let r = arrayCacheF32[n];
 
-				var t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;
+		if (r === undefined) {
+			r = new Float32Array(n);
+			arrayCacheF32[n] = r;
+		}
 
-				if ( t < 0 || t > 1 ) {
+		if (nBlocks !== 0) {
+			firstElem.toArray(r, 0);
 
-					return undefined;
+			for (let i = 1, offset = 0; i !== nBlocks; ++i) {
+				offset += blockSize;
+				array[i].toArray(r, offset);
+			}
+		}
 
-				}
+		return r;
+	}
 
-				return target.copy( direction ).multiplyScalar( t ).add( line.start );
+	function arraysEqual(a, b) {
+		if (a.length !== b.length) return false;
 
-			};
+		for (let i = 0, l = a.length; i < l; i++) {
+			if (a[i] !== b[i]) return false;
+		}
 
-		}(),
+		return true;
+	}
 
-		intersectsLine: function ( line ) {
+	function copyArray(a, b) {
+		for (let i = 0, l = b.length; i < l; i++) {
+			a[i] = b[i];
+		}
+	} // Texture unit allocation
 
-			// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.
 
-			var startSign = this.distanceToPoint( line.start );
-			var endSign = this.distanceToPoint( line.end );
+	function allocTexUnits(textures, n) {
+		let r = arrayCacheI32[n];
 
-			return ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );
+		if (r === undefined) {
+			r = new Int32Array(n);
+			arrayCacheI32[n] = r;
+		}
 
-		},
+		for (let i = 0; i !== n; ++i) {
+			r[i] = textures.allocateTextureUnit();
+		}
 
-		intersectsBox: function ( box ) {
+		return r;
+	} // --- Setters ---
+	// Note: Defining these methods externally, because they come in a bunch
+	// and this way their names minify.
+	// Single scalar
 
-			return box.intersectsPlane( this );
 
-		},
+	function setValueV1f(gl, v) {
+		const cache = this.cache;
+		if (cache[0] === v) return;
+		gl.uniform1f(this.addr, v);
+		cache[0] = v;
+	} // Single float vector (from flat array or THREE.VectorN)
 
-		intersectsSphere: function ( sphere ) {
 
-			return sphere.intersectsPlane( this );
+	function setValueV2f(gl, v) {
+		const cache = this.cache;
 
-		},
+		if (v.x !== undefined) {
+			if (cache[0] !== v.x || cache[1] !== v.y) {
+				gl.uniform2f(this.addr, v.x, v.y);
+				cache[0] = v.x;
+				cache[1] = v.y;
+			}
+		} else {
+			if (arraysEqual(cache, v)) return;
+			gl.uniform2fv(this.addr, v);
+			copyArray(cache, v);
+		}
+	}
 
-		coplanarPoint: function ( target ) {
+	function setValueV3f(gl, v) {
+		const cache = this.cache;
 
-			if ( target === undefined ) {
+		if (v.x !== undefined) {
+			if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z) {
+				gl.uniform3f(this.addr, v.x, v.y, v.z);
+				cache[0] = v.x;
+				cache[1] = v.y;
+				cache[2] = v.z;
+			}
+		} else if (v.r !== undefined) {
+			if (cache[0] !== v.r || cache[1] !== v.g || cache[2] !== v.b) {
+				gl.uniform3f(this.addr, v.r, v.g, v.b);
+				cache[0] = v.r;
+				cache[1] = v.g;
+				cache[2] = v.b;
+			}
+		} else {
+			if (arraysEqual(cache, v)) return;
+			gl.uniform3fv(this.addr, v);
+			copyArray(cache, v);
+		}
+	}
 
-				console.warn( 'THREE.Plane: .coplanarPoint() target is now required' );
-				target = new Vector3();
+	function setValueV4f(gl, v) {
+		const cache = this.cache;
 
+		if (v.x !== undefined) {
+			if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z || cache[3] !== v.w) {
+				gl.uniform4f(this.addr, v.x, v.y, v.z, v.w);
+				cache[0] = v.x;
+				cache[1] = v.y;
+				cache[2] = v.z;
+				cache[3] = v.w;
 			}
+		} else {
+			if (arraysEqual(cache, v)) return;
+			gl.uniform4fv(this.addr, v);
+			copyArray(cache, v);
+		}
+	} // Single matrix (from flat array or THREE.MatrixN)
 
-			return target.copy( this.normal ).multiplyScalar( - this.constant );
 
-		},
+	function setValueM2(gl, v) {
+		const cache = this.cache;
+		const elements = v.elements;
 
-		applyMatrix4: function () {
+		if (elements === undefined) {
+			if (arraysEqual(cache, v)) return;
+			gl.uniformMatrix2fv(this.addr, false, v);
+			copyArray(cache, v);
+		} else {
+			if (arraysEqual(cache, elements)) return;
+			mat2array.set(elements);
+			gl.uniformMatrix2fv(this.addr, false, mat2array);
+			copyArray(cache, elements);
+		}
+	}
 
-			var v1 = new Vector3();
-			var m1 = new Matrix3();
+	function setValueM3(gl, v) {
+		const cache = this.cache;
+		const elements = v.elements;
 
-			return function applyMatrix4( matrix, optionalNormalMatrix ) {
+		if (elements === undefined) {
+			if (arraysEqual(cache, v)) return;
+			gl.uniformMatrix3fv(this.addr, false, v);
+			copyArray(cache, v);
+		} else {
+			if (arraysEqual(cache, elements)) return;
+			mat3array.set(elements);
+			gl.uniformMatrix3fv(this.addr, false, mat3array);
+			copyArray(cache, elements);
+		}
+	}
 
-				var normalMatrix = optionalNormalMatrix || m1.getNormalMatrix( matrix );
+	function setValueM4(gl, v) {
+		const cache = this.cache;
+		const elements = v.elements;
 
-				var referencePoint = this.coplanarPoint( v1 ).applyMatrix4( matrix );
+		if (elements === undefined) {
+			if (arraysEqual(cache, v)) return;
+			gl.uniformMatrix4fv(this.addr, false, v);
+			copyArray(cache, v);
+		} else {
+			if (arraysEqual(cache, elements)) return;
+			mat4array.set(elements);
+			gl.uniformMatrix4fv(this.addr, false, mat4array);
+			copyArray(cache, elements);
+		}
+	} // Single integer / boolean
 
-				var normal = this.normal.applyMatrix3( normalMatrix ).normalize();
 
-				this.constant = - referencePoint.dot( normal );
+	function setValueV1i(gl, v) {
+		const cache = this.cache;
+		if (cache[0] === v) return;
+		gl.uniform1i(this.addr, v);
+		cache[0] = v;
+	} // Single integer / boolean vector (from flat array)
 
-				return this;
 
-			};
+	function setValueV2i(gl, v) {
+		const cache = this.cache;
+		if (arraysEqual(cache, v)) return;
+		gl.uniform2iv(this.addr, v);
+		copyArray(cache, v);
+	}
 
-		}(),
+	function setValueV3i(gl, v) {
+		const cache = this.cache;
+		if (arraysEqual(cache, v)) return;
+		gl.uniform3iv(this.addr, v);
+		copyArray(cache, v);
+	}
 
-		translate: function ( offset ) {
+	function setValueV4i(gl, v) {
+		const cache = this.cache;
+		if (arraysEqual(cache, v)) return;
+		gl.uniform4iv(this.addr, v);
+		copyArray(cache, v);
+	} // Single unsigned integer
 
-			this.constant -= offset.dot( this.normal );
 
-			return this;
+	function setValueV1ui(gl, v) {
+		const cache = this.cache;
+		if (cache[0] === v) return;
+		gl.uniform1ui(this.addr, v);
+		cache[0] = v;
+	} // Single unsigned integer vector (from flat array)
 
-		},
 
-		equals: function ( plane ) {
+	function setValueV2ui(gl, v) {
+		const cache = this.cache;
+		if (arraysEqual(cache, v)) return;
+		gl.uniform2uiv(this.addr, v);
+		copyArray(cache, v);
+	}
 
-			return plane.normal.equals( this.normal ) && ( plane.constant === this.constant );
+	function setValueV3ui(gl, v) {
+		const cache = this.cache;
+		if (arraysEqual(cache, v)) return;
+		gl.uniform3uiv(this.addr, v);
+		copyArray(cache, v);
+	}
 
-		}
+	function setValueV4ui(gl, v) {
+		const cache = this.cache;
+		if (arraysEqual(cache, v)) return;
+		gl.uniform4uiv(this.addr, v);
+		copyArray(cache, v);
+	} // Single texture (2D / Cube)
 
-	} );
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author bhouston / http://clara.io
-	 */
+	function setValueT1(gl, v, textures) {
+		const cache = this.cache;
+		const unit = textures.allocateTextureUnit();
 
-	function Frustum( p0, p1, p2, p3, p4, p5 ) {
+		if (cache[0] !== unit) {
+			gl.uniform1i(this.addr, unit);
+			cache[0] = unit;
+		}
 
-		this.planes = [
+		textures.safeSetTexture2D(v || emptyTexture, unit);
+	}
 
-			( p0 !== undefined ) ? p0 : new Plane(),
-			( p1 !== undefined ) ? p1 : new Plane(),
-			( p2 !== undefined ) ? p2 : new Plane(),
-			( p3 !== undefined ) ? p3 : new Plane(),
-			( p4 !== undefined ) ? p4 : new Plane(),
-			( p5 !== undefined ) ? p5 : new Plane()
+	function setValueT3D1(gl, v, textures) {
+		const cache = this.cache;
+		const unit = textures.allocateTextureUnit();
 
-		];
+		if (cache[0] !== unit) {
+			gl.uniform1i(this.addr, unit);
+			cache[0] = unit;
+		}
 
+		textures.setTexture3D(v || emptyTexture3d, unit);
 	}
 
-	Object.assign( Frustum.prototype, {
-
-		set: function ( p0, p1, p2, p3, p4, p5 ) {
+	function setValueT6(gl, v, textures) {
+		const cache = this.cache;
+		const unit = textures.allocateTextureUnit();
 
-			var planes = this.planes;
-
-			planes[ 0 ].copy( p0 );
-			planes[ 1 ].copy( p1 );
-			planes[ 2 ].copy( p2 );
-			planes[ 3 ].copy( p3 );
-			planes[ 4 ].copy( p4 );
-			planes[ 5 ].copy( p5 );
+		if (cache[0] !== unit) {
+			gl.uniform1i(this.addr, unit);
+			cache[0] = unit;
+		}
 
-			return this;
+		textures.safeSetTextureCube(v || emptyCubeTexture, unit);
+	}
 
-		},
+	function setValueT2DArray1(gl, v, textures) {
+		const cache = this.cache;
+		const unit = textures.allocateTextureUnit();
 
-		clone: function () {
+		if (cache[0] !== unit) {
+			gl.uniform1i(this.addr, unit);
+			cache[0] = unit;
+		}
 
-			return new this.constructor().copy( this );
+		textures.setTexture2DArray(v || emptyTexture2dArray, unit);
+	} // Helper to pick the right setter for the singular case
 
-		},
 
-		copy: function ( frustum ) {
+	function getSingularSetter(type) {
+		switch (type) {
+			case 0x1406:
+				return setValueV1f;
+			// FLOAT
 
-			var planes = this.planes;
+			case 0x8b50:
+				return setValueV2f;
+			// _VEC2
 
-			for ( var i = 0; i < 6; i ++ ) {
+			case 0x8b51:
+				return setValueV3f;
+			// _VEC3
 
-				planes[ i ].copy( frustum.planes[ i ] );
+			case 0x8b52:
+				return setValueV4f;
+			// _VEC4
 
-			}
+			case 0x8b5a:
+				return setValueM2;
+			// _MAT2
 
-			return this;
+			case 0x8b5b:
+				return setValueM3;
+			// _MAT3
 
-		},
+			case 0x8b5c:
+				return setValueM4;
+			// _MAT4
 
-		setFromMatrix: function ( m ) {
+			case 0x1404:
+			case 0x8b56:
+				return setValueV1i;
+			// INT, BOOL
 
-			var planes = this.planes;
-			var me = m.elements;
-			var me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];
-			var me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];
-			var me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];
-			var me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];
+			case 0x8b53:
+			case 0x8b57:
+				return setValueV2i;
+			// _VEC2
 
-			planes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();
-			planes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();
-			planes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();
-			planes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();
-			planes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();
-			planes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();
+			case 0x8b54:
+			case 0x8b58:
+				return setValueV3i;
+			// _VEC3
 
-			return this;
+			case 0x8b55:
+			case 0x8b59:
+				return setValueV4i;
+			// _VEC4
 
-		},
+			case 0x1405:
+				return setValueV1ui;
+			// UINT
 
-		intersectsObject: function () {
+			case 0x8dc6:
+				return setValueV2ui;
+			// _VEC2
 
-			var sphere = new Sphere();
+			case 0x8dc7:
+				return setValueV3ui;
+			// _VEC3
 
-			return function intersectsObject( object ) {
+			case 0x8dc8:
+				return setValueV4ui;
+			// _VEC4
 
-				var geometry = object.geometry;
+			case 0x8b5e: // SAMPLER_2D
 
-				if ( geometry.boundingSphere === null )
-					geometry.computeBoundingSphere();
+			case 0x8d66: // SAMPLER_EXTERNAL_OES
 
-				sphere.copy( geometry.boundingSphere )
-					.applyMatrix4( object.matrixWorld );
+			case 0x8dca: // INT_SAMPLER_2D
 
-				return this.intersectsSphere( sphere );
+			case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
 
-			};
+			case 0x8b62:
+				// SAMPLER_2D_SHADOW
+				return setValueT1;
 
-		}(),
+			case 0x8b5f: // SAMPLER_3D
 
-		intersectsSprite: function () {
+			case 0x8dcb: // INT_SAMPLER_3D
 
-			var sphere = new Sphere();
+			case 0x8dd3:
+				// UNSIGNED_INT_SAMPLER_3D
+				return setValueT3D1;
 
-			return function intersectsSprite( sprite ) {
+			case 0x8b60: // SAMPLER_CUBE
 
-				sphere.center.set( 0, 0, 0 );
-				sphere.radius = 0.7071067811865476;
-				sphere.applyMatrix4( sprite.matrixWorld );
+			case 0x8dcc: // INT_SAMPLER_CUBE
 
-				return this.intersectsSphere( sphere );
+			case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
 
-			};
+			case 0x8dc5:
+				// SAMPLER_CUBE_SHADOW
+				return setValueT6;
 
-		}(),
+			case 0x8dc1: // SAMPLER_2D_ARRAY
 
-		intersectsSphere: function ( sphere ) {
+			case 0x8dcf: // INT_SAMPLER_2D_ARRAY
 
-			var planes = this.planes;
-			var center = sphere.center;
-			var negRadius = - sphere.radius;
+			case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY
 
-			for ( var i = 0; i < 6; i ++ ) {
+			case 0x8dc4:
+				// SAMPLER_2D_ARRAY_SHADOW
+				return setValueT2DArray1;
+		}
+	} // Array of scalars
 
-				var distance = planes[ i ].distanceToPoint( center );
 
-				if ( distance < negRadius ) {
+	function setValueV1fArray(gl, v) {
+		gl.uniform1fv(this.addr, v);
+	} // Array of vectors (from flat array or array of THREE.VectorN)
 
-					return false;
 
-				}
+	function setValueV2fArray(gl, v) {
+		const data = flatten(v, this.size, 2);
+		gl.uniform2fv(this.addr, data);
+	}
 
-			}
+	function setValueV3fArray(gl, v) {
+		const data = flatten(v, this.size, 3);
+		gl.uniform3fv(this.addr, data);
+	}
 
-			return true;
+	function setValueV4fArray(gl, v) {
+		const data = flatten(v, this.size, 4);
+		gl.uniform4fv(this.addr, data);
+	} // Array of matrices (from flat array or array of THREE.MatrixN)
 
-		},
 
-		intersectsBox: function () {
+	function setValueM2Array(gl, v) {
+		const data = flatten(v, this.size, 4);
+		gl.uniformMatrix2fv(this.addr, false, data);
+	}
 
-			var p1 = new Vector3(),
-				p2 = new Vector3();
+	function setValueM3Array(gl, v) {
+		const data = flatten(v, this.size, 9);
+		gl.uniformMatrix3fv(this.addr, false, data);
+	}
 
-			return function intersectsBox( box ) {
+	function setValueM4Array(gl, v) {
+		const data = flatten(v, this.size, 16);
+		gl.uniformMatrix4fv(this.addr, false, data);
+	} // Array of integer / boolean
 
-				var planes = this.planes;
 
-				for ( var i = 0; i < 6; i ++ ) {
+	function setValueV1iArray(gl, v) {
+		gl.uniform1iv(this.addr, v);
+	} // Array of integer / boolean vectors (from flat array)
 
-					var plane = planes[ i ];
 
-					p1.x = plane.normal.x > 0 ? box.min.x : box.max.x;
-					p2.x = plane.normal.x > 0 ? box.max.x : box.min.x;
-					p1.y = plane.normal.y > 0 ? box.min.y : box.max.y;
-					p2.y = plane.normal.y > 0 ? box.max.y : box.min.y;
-					p1.z = plane.normal.z > 0 ? box.min.z : box.max.z;
-					p2.z = plane.normal.z > 0 ? box.max.z : box.min.z;
+	function setValueV2iArray(gl, v) {
+		gl.uniform2iv(this.addr, v);
+	}
 
-					var d1 = plane.distanceToPoint( p1 );
-					var d2 = plane.distanceToPoint( p2 );
+	function setValueV3iArray(gl, v) {
+		gl.uniform3iv(this.addr, v);
+	}
 
-					// if both outside plane, no intersection
+	function setValueV4iArray(gl, v) {
+		gl.uniform4iv(this.addr, v);
+	} // Array of unsigned integer
 
-					if ( d1 < 0 && d2 < 0 ) {
 
-						return false;
+	function setValueV1uiArray(gl, v) {
+		gl.uniform1uiv(this.addr, v);
+	} // Array of unsigned integer vectors (from flat array)
 
-					}
 
-				}
+	function setValueV2uiArray(gl, v) {
+		gl.uniform2uiv(this.addr, v);
+	}
 
-				return true;
+	function setValueV3uiArray(gl, v) {
+		gl.uniform3uiv(this.addr, v);
+	}
 
-			};
+	function setValueV4uiArray(gl, v) {
+		gl.uniform4uiv(this.addr, v);
+	} // Array of textures (2D / Cube)
 
-		}(),
 
-		containsPoint: function ( point ) {
+	function setValueT1Array(gl, v, textures) {
+		const n = v.length;
+		const units = allocTexUnits(textures, n);
+		gl.uniform1iv(this.addr, units);
 
-			var planes = this.planes;
+		for (let i = 0; i !== n; ++i) {
+			textures.safeSetTexture2D(v[i] || emptyTexture, units[i]);
+		}
+	}
 
-			for ( var i = 0; i < 6; i ++ ) {
+	function setValueT6Array(gl, v, textures) {
+		const n = v.length;
+		const units = allocTexUnits(textures, n);
+		gl.uniform1iv(this.addr, units);
 
-				if ( planes[ i ].distanceToPoint( point ) < 0 ) {
+		for (let i = 0; i !== n; ++i) {
+			textures.safeSetTextureCube(v[i] || emptyCubeTexture, units[i]);
+		}
+	} // Helper to pick the right setter for a pure (bottom-level) array
 
-					return false;
 
-				}
+	function getPureArraySetter(type) {
+		switch (type) {
+			case 0x1406:
+				return setValueV1fArray;
+			// FLOAT
 
-			}
+			case 0x8b50:
+				return setValueV2fArray;
+			// _VEC2
 
-			return true;
+			case 0x8b51:
+				return setValueV3fArray;
+			// _VEC3
 
-		}
+			case 0x8b52:
+				return setValueV4fArray;
+			// _VEC4
 
-	} );
+			case 0x8b5a:
+				return setValueM2Array;
+			// _MAT2
 
-	var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif\n";
+			case 0x8b5b:
+				return setValueM3Array;
+			// _MAT3
 
-	var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif\n";
+			case 0x8b5c:
+				return setValueM4Array;
+			// _MAT4
 
-	var alphatest_fragment = "#ifdef ALPHATEST\n\tif ( diffuseColor.a < ALPHATEST ) discard;\n#endif\n";
+			case 0x1404:
+			case 0x8b56:
+				return setValueV1iArray;
+			// INT, BOOL
 
-	var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( PHYSICAL )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );\n\t#endif\n#endif\n";
+			case 0x8b53:
+			case 0x8b57:
+				return setValueV2iArray;
+			// _VEC2
 
-	var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";
+			case 0x8b54:
+			case 0x8b58:
+				return setValueV3iArray;
+			// _VEC3
 
-	var begin_vertex = "\nvec3 transformed = vec3( position );\n";
+			case 0x8b55:
+			case 0x8b59:
+				return setValueV4iArray;
+			// _VEC4
 
-	var beginnormal_vertex = "\nvec3 objectNormal = vec3( normal );\n";
+			case 0x1405:
+				return setValueV1uiArray;
+			// UINT
 
-	var bsdfs = "float punctualLightIntensityToIrradianceFactor( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n\tif( decayExponent > 0.0 ) {\n#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\t\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\t\tfloat maxDistanceCutoffFactor = pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t\treturn distanceFalloff * maxDistanceCutoffFactor;\n#else\n\t\treturn pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\n#endif\n\t}\n\treturn 1.0;\n}\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 specularColor, const in float dotLH ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotLH - 6.98316 ) * dotLH );\n\treturn ( 1.0 - specularColor ) * fresnel + specularColor;\n}\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gl = dotNL + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\tfloat gv = dotNV + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\treturn 1.0 / ( gl * gv );\n}\nfloat G_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n\tfloat dotNL = saturate( dot( geometry.normal, incidentLight.direction ) );\n\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( G * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE  = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS  = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nvec3 BRDF_Specular_GGX_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness ) {\n\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\tvec2 AB = vec2( -1.04, 1.04 ) * a004 + r.zw;\n\treturn specularColor * AB.x + AB.y;\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\n\treturn ( 2.0 / pow2( ggxRoughness + 0.0001 ) - 2.0 );\n}\nfloat BlinnExponentToGGXRoughness( const in float blinnExponent ) {\n\treturn sqrt( 2.0 / ( blinnExponent + 2.0 ) );\n}\n";
+			case 0x8dc6:
+				return setValueV2uiArray;
+			// _VEC2
 
-	var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy ) {\n\t\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\n\t\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 );\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif\n";
+			case 0x8dc7:
+				return setValueV3uiArray;
+			// _VEC3
 
-	var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vViewPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vViewPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\tif ( clipped ) discard;\n\t#endif\n#endif\n";
+			case 0x8dc8:
+				return setValueV4uiArray;
+			// _VEC4
 
-	var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\t#if ! defined( PHYSICAL ) && ! defined( PHONG )\n\t\tvarying vec3 vViewPosition;\n\t#endif\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif\n";
+			case 0x8b5e: // SAMPLER_2D
 
-	var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0 && ! defined( PHYSICAL ) && ! defined( PHONG )\n\tvarying vec3 vViewPosition;\n#endif\n";
+			case 0x8d66: // SAMPLER_EXTERNAL_OES
 
-	var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0 && ! defined( PHYSICAL ) && ! defined( PHONG )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n";
+			case 0x8dca: // INT_SAMPLER_2D
 
-	var color_fragment = "#ifdef USE_COLOR\n\tdiffuseColor.rgb *= vColor;\n#endif";
+			case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
 
-	var color_pars_fragment = "#ifdef USE_COLOR\n\tvarying vec3 vColor;\n#endif\n";
+			case 0x8b62:
+				// SAMPLER_2D_SHADOW
+				return setValueT1Array;
 
-	var color_pars_vertex = "#ifdef USE_COLOR\n\tvarying vec3 vColor;\n#endif";
+			case 0x8b60: // SAMPLER_CUBE
 
-	var color_vertex = "#ifdef USE_COLOR\n\tvColor.xyz = color.xyz;\n#endif";
+			case 0x8dcc: // INT_SAMPLER_CUBE
 
-	var common = "#define PI 3.14159265359\n#define PI2 6.28318530718\n#define PI_HALF 1.5707963267949\n#define RECIPROCAL_PI 0.31830988618\n#define RECIPROCAL_PI2 0.15915494\n#define LOG2 1.442695\n#define EPSILON 1e-6\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#define whiteCompliment(a) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract(sin(sn) * c);\n}\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\tfloat distance = dot( planeNormal, point - pointOnPlane );\n\treturn - distance * planeNormal + point;\n}\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn sign( dot( point - pointOnPlane, planeNormal ) );\n}\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat linearToRelativeLuminance( const in vec3 color ) {\n\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\n\treturn dot( weights, color.rgb );\n}\n";
+			case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
 
-	var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n#define cubeUV_textureSize (1024.0)\nint getFaceFromDirection(vec3 direction) {\n\tvec3 absDirection = abs(direction);\n\tint face = -1;\n\tif( absDirection.x > absDirection.z ) {\n\t\tif(absDirection.x > absDirection.y )\n\t\t\tface = direction.x > 0.0 ? 0 : 3;\n\t\telse\n\t\t\tface = direction.y > 0.0 ? 1 : 4;\n\t}\n\telse {\n\t\tif(absDirection.z > absDirection.y )\n\t\t\tface = direction.z > 0.0 ? 2 : 5;\n\t\telse\n\t\t\tface = direction.y > 0.0 ? 1 : 4;\n\t}\n\treturn face;\n}\n#define cubeUV_maxLods1  (log2(cubeUV_textureSize*0.25) - 1.0)\n#define cubeUV_rangeClamp (exp2((6.0 - 1.0) * 2.0))\nvec2 MipLevelInfo( vec3 vec, float roughnessLevel, float roughness ) {\n\tfloat scale = exp2(cubeUV_maxLods1 - roughnessLevel);\n\tfloat dxRoughness = dFdx(roughness);\n\tfloat dyRoughness = dFdy(roughness);\n\tvec3 dx = dFdx( vec * scale * dxRoughness );\n\tvec3 dy = dFdy( vec * scale * dyRoughness );\n\tfloat d = max( dot( dx, dx ), dot( dy, dy ) );\n\td = clamp(d, 1.0, cubeUV_rangeClamp);\n\tfloat mipLevel = 0.5 * log2(d);\n\treturn vec2(floor(mipLevel), fract(mipLevel));\n}\n#define cubeUV_maxLods2 (log2(cubeUV_textureSize*0.25) - 2.0)\n#define cubeUV_rcpTextureSize (1.0 / cubeUV_textureSize)\nvec2 getCubeUV(vec3 direction, float roughnessLevel, float mipLevel) {\n\tmipLevel = roughnessLevel > cubeUV_maxLods2 - 3.0 ? 0.0 : mipLevel;\n\tfloat a = 16.0 * cubeUV_rcpTextureSize;\n\tvec2 exp2_packed = exp2( vec2( roughnessLevel, mipLevel ) );\n\tvec2 rcp_exp2_packed = vec2( 1.0 ) / exp2_packed;\n\tfloat powScale = exp2_packed.x * exp2_packed.y;\n\tfloat scale = rcp_exp2_packed.x * rcp_exp2_packed.y * 0.25;\n\tfloat mipOffset = 0.75*(1.0 - rcp_exp2_packed.y) * rcp_exp2_packed.x;\n\tbool bRes = mipLevel == 0.0;\n\tscale =  bRes && (scale < a) ? a : scale;\n\tvec3 r;\n\tvec2 offset;\n\tint face = getFaceFromDirection(direction);\n\tfloat rcpPowScale = 1.0 / powScale;\n\tif( face == 0) {\n\t\tr = vec3(direction.x, -direction.z, direction.y);\n\t\toffset = vec2(0.0+mipOffset,0.75 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? a : offset.y;\n\t}\n\telse if( face == 1) {\n\t\tr = vec3(direction.y, direction.x, direction.z);\n\t\toffset = vec2(scale+mipOffset, 0.75 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? a : offset.y;\n\t}\n\telse if( face == 2) {\n\t\tr = vec3(direction.z, direction.x, direction.y);\n\t\toffset = vec2(2.0*scale+mipOffset, 0.75 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? a : offset.y;\n\t}\n\telse if( face == 3) {\n\t\tr = vec3(direction.x, direction.z, direction.y);\n\t\toffset = vec2(0.0+mipOffset,0.5 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? 0.0 : offset.y;\n\t}\n\telse if( face == 4) {\n\t\tr = vec3(direction.y, direction.x, -direction.z);\n\t\toffset = vec2(scale+mipOffset, 0.5 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? 0.0 : offset.y;\n\t}\n\telse {\n\t\tr = vec3(direction.z, -direction.x, direction.y);\n\t\toffset = vec2(2.0*scale+mipOffset, 0.5 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? 0.0 : offset.y;\n\t}\n\tr = normalize(r);\n\tfloat texelOffset = 0.5 * cubeUV_rcpTextureSize;\n\tvec2 s = ( r.yz / abs( r.x ) + vec2( 1.0 ) ) * 0.5;\n\tvec2 base = offset + vec2( texelOffset );\n\treturn base + s * ( scale - 2.0 * texelOffset );\n}\n#define cubeUV_maxLods3 (log2(cubeUV_textureSize*0.25) - 3.0)\nvec4 textureCubeUV(vec3 reflectedDirection, float roughness ) {\n\tfloat roughnessVal = roughness* cubeUV_maxLods3;\n\tfloat r1 = floor(roughnessVal);\n\tfloat r2 = r1 + 1.0;\n\tfloat t = fract(roughnessVal);\n\tvec2 mipInfo = MipLevelInfo(reflectedDirection, r1, roughness);\n\tfloat s = mipInfo.y;\n\tfloat level0 = mipInfo.x;\n\tfloat level1 = level0 + 1.0;\n\tlevel1 = level1 > 5.0 ? 5.0 : level1;\n\tlevel0 += min( floor( s + 0.5 ), 5.0 );\n\tvec2 uv_10 = getCubeUV(reflectedDirection, r1, level0);\n\tvec4 color10 = envMapTexelToLinear(texture2D(envMap, uv_10));\n\tvec2 uv_20 = getCubeUV(reflectedDirection, r2, level0);\n\tvec4 color20 = envMapTexelToLinear(texture2D(envMap, uv_20));\n\tvec4 result = mix(color10, color20, t);\n\treturn vec4(result.rgb, 1.0);\n}\n#endif\n";
+			case 0x8dc5:
+				// SAMPLER_CUBE_SHADOW
+				return setValueT6Array;
+		}
+	} // --- Uniform Classes ---
 
-	var defaultnormal_vertex = "vec3 transformedNormal = normalMatrix * objectNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n";
 
-	var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif\n";
-
-	var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, uv ).x * displacementScale + displacementBias );\n#endif\n";
-
-	var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif\n";
-
-	var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif\n";
+	function SingleUniform(id, activeInfo, addr) {
+		this.id = id;
+		this.addr = addr;
+		this.cache = [];
+		this.setValue = getSingularSetter(activeInfo.type); // this.path = activeInfo.name; // DEBUG
+	}
 
-	var encodings_fragment = "  gl_FragColor = linearToOutputTexel( gl_FragColor );\n";
+	function PureArrayUniform(id, activeInfo, addr) {
+		this.id = id;
+		this.addr = addr;
+		this.cache = [];
+		this.size = activeInfo.size;
+		this.setValue = getPureArraySetter(activeInfo.type); // this.path = activeInfo.name; // DEBUG
+	}
 
-	var encodings_pars_fragment = "\nvec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.xyz, vec3( gammaFactor ) ), value.w );\n}\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.xyz, vec3( 1.0 / gammaFactor ) ), value.w );\n}\nvec4 sRGBToLinear( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.w );\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.w );\n}\nvec4 RGBEToLinear( in vec4 value ) {\n\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\n}\nvec4 LinearToRGBE( in vec4 value ) {\n\tfloat maxComponent = max( max( value.r, value.g ), value.b );\n\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\n\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\n}\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.xyz * value.w * maxRange, 1.0 );\n}\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.x, max( value.g, value.b ) );\n\tfloat M      = clamp( maxRGB / maxRange, 0.0, 1.0 );\n\tM            = ceil( M * 255.0 ) / 255.0;\n\treturn vec4( value.rgb / ( M * maxRange ), M );\n}\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\n}\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.x, max( value.g, value.b ) );\n\tfloat D      = max( maxRange / maxRGB, 1.0 );\n\tD            = min( floor( D ) / 255.0, 1.0 );\n\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\n}\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\nvec4 LinearToLogLuv( in vec4 value )  {\n\tvec3 Xp_Y_XYZp = value.rgb * cLogLuvM;\n\tXp_Y_XYZp = max(Xp_Y_XYZp, vec3(1e-6, 1e-6, 1e-6));\n\tvec4 vResult;\n\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\n\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\n\tvResult.w = fract(Le);\n\tvResult.z = (Le - (floor(vResult.w*255.0))/255.0)/255.0;\n\treturn vResult;\n}\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\nvec4 LogLuvToLinear( in vec4 value ) {\n\tfloat Le = value.z * 255.0 + value.w;\n\tvec3 Xp_Y_XYZp;\n\tXp_Y_XYZp.y = exp2((Le - 127.0) / 2.0);\n\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\n\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\n\tvec3 vRGB = Xp_Y_XYZp.rgb * cLogLuvInverseM;\n\treturn vec4( max(vRGB, 0.0), 1.0 );\n}\n";
+	PureArrayUniform.prototype.updateCache = function (data) {
+		const cache = this.cache;
 
-	var envmap_fragment = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\tvec3 cameraToVertex = normalize( vWorldPosition - cameraPosition );\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#elif defined( ENVMAP_TYPE_EQUIREC )\n\t\tvec2 sampleUV;\n\t\treflectVec = normalize( reflectVec );\n\t\tsampleUV.y = asin( clamp( reflectVec.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\t\tsampleUV.x = atan( reflectVec.z, reflectVec.x ) * RECIPROCAL_PI2 + 0.5;\n\t\tvec4 envColor = texture2D( envMap, sampleUV );\n\t#elif defined( ENVMAP_TYPE_SPHERE )\n\t\treflectVec = normalize( reflectVec );\n\t\tvec3 reflectView = normalize( ( viewMatrix * vec4( reflectVec, 0.0 ) ).xyz + vec3( 0.0, 0.0, 1.0 ) );\n\t\tvec4 envColor = texture2D( envMap, reflectView.xy * 0.5 + 0.5 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\tenvColor = envMapTexelToLinear( envColor );\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif\n";
+		if (data instanceof Float32Array && cache.length !== data.length) {
+			this.cache = new Float32Array(data.length);
+		}
 
-	var envmap_pars_fragment = "#if defined( USE_ENVMAP ) || defined( PHYSICAL )\n\tuniform float reflectivity;\n\tuniform float envMapIntensity;\n#endif\n#ifdef USE_ENVMAP\n\t#if ! defined( PHYSICAL ) && ( defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) )\n\t\tvarying vec3 vWorldPosition;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\tuniform float flipEnvMap;\n\tuniform int maxMipLevel;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( PHYSICAL )\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif\n";
+		copyArray(cache, data);
+	};
 
-	var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif\n";
+	function StructuredUniform(id) {
+		this.id = id;
+		this.seq = [];
+		this.map = {};
+	}
 
-	var envmap_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif\n";
+	StructuredUniform.prototype.setValue = function (gl, value, textures) {
+		const seq = this.seq;
 
-	var fog_vertex = "\n#ifdef USE_FOG\nfogDepth = -mvPosition.z;\n#endif";
+		for (let i = 0, n = seq.length; i !== n; ++i) {
+			const u = seq[i];
+			u.setValue(gl, value[u.id], textures);
+		}
+	}; // --- Top-level ---
+	// Parser - builds up the property tree from the path strings
 
-	var fog_pars_vertex = "#ifdef USE_FOG\n  varying float fogDepth;\n#endif\n";
 
-	var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = whiteCompliment( exp2( - fogDensity * fogDensity * fogDepth * fogDepth * LOG2 ) );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, fogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif\n";
+	const RePathPart = /(\w+)(\])?(\[|\.)?/g; // extracts
+	// 	- the identifier (member name or array index)
+	//	- followed by an optional right bracket (found when array index)
+	//	- followed by an optional left bracket or dot (type of subscript)
+	//
+	// Note: These portions can be read in a non-overlapping fashion and
+	// allow straightforward parsing of the hierarchy that WebGL encodes
+	// in the uniform names.
 
-	var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float fogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif\n";
+	function addUniform(container, uniformObject) {
+		container.seq.push(uniformObject);
+		container.map[uniformObject.id] = uniformObject;
+	}
 
-	var gradientmap_pars_fragment = "#ifdef TOON\n\tuniform sampler2D gradientMap;\n\tvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\t\tfloat dotNL = dot( normal, lightDirection );\n\t\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t\t#ifdef USE_GRADIENTMAP\n\t\t\treturn texture2D( gradientMap, coord ).rgb;\n\t\t#else\n\t\t\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\n\t\t#endif\n\t}\n#endif\n";
+	function parseUniform(activeInfo, addr, container) {
+		const path = activeInfo.name,
+					pathLength = path.length; // reset RegExp object, because of the early exit of a previous run
 
-	var lightmap_fragment = "#ifdef USE_LIGHTMAP\n\treflectedLight.indirectDiffuse += PI * texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n#endif\n";
+		RePathPart.lastIndex = 0;
 
-	var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";
+		while (true) {
+			const match = RePathPart.exec(path),
+						matchEnd = RePathPart.lastIndex;
+			let id = match[1];
+			const idIsIndex = match[2] === ']',
+						subscript = match[3];
+			if (idIsIndex) id = id | 0; // convert to integer
 
-	var lights_lambert_vertex = "vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n\tvLightBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\n#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tgetPointDirectLightIrradiance( pointLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tgetSpotDirectLightIrradiance( spotLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n#endif\n#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tgetDirectionalDirectLightIrradiance( directionalLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\tvLightFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\n\t\t#endif\n\t}\n#endif\n";
+			if (subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength) {
+				// bare name or "pure" bottom-level array "[0]" suffix
+				addUniform(container, subscript === undefined ? new SingleUniform(id, activeInfo, addr) : new PureArrayUniform(id, activeInfo, addr));
+				break;
+			} else {
+				// step into inner node / create it in case it doesn't exist
+				const map = container.map;
+				let next = map[id];
 
-	var lights_pars_begin = "uniform vec3 ambientLightColor;\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treturn irradiance;\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tint shadow;\n\t\tfloat shadowBias;\n\t\tfloat shadowRadius;\n\t\tvec2 shadowMapSize;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalDirectLightIrradiance( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tdirectLight.color = directionalLight.color;\n\t\tdirectLight.direction = directionalLight.direction;\n\t\tdirectLight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tint shadow;\n\t\tfloat shadowBias;\n\t\tfloat shadowRadius;\n\t\tvec2 shadowMapSize;\n\t\tfloat shadowCameraNear;\n\t\tfloat shadowCameraFar;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointDirectLightIrradiance( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tdirectLight.color = pointLight.color;\n\t\tdirectLight.color *= punctualLightIntensityToIrradianceFactor( lightDistance, pointLight.distance, pointLight.decay );\n\t\tdirectLight.visible = ( directLight.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t\tint shadow;\n\t\tfloat shadowBias;\n\t\tfloat shadowRadius;\n\t\tvec2 shadowMapSize;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotDirectLightIrradiance( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight directLight  ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tfloat angleCos = dot( directLight.direction, spotLight.direction );\n\t\tif ( angleCos > spotLight.coneCos ) {\n\t\t\tfloat spotEffect = smoothstep( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\t\tdirectLight.color = spotLight.color;\n\t\t\tdirectLight.color *= spotEffect * punctualLightIntensityToIrradianceFactor( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tdirectLight.visible = true;\n\t\t} else {\n\t\t\tdirectLight.color = vec3( 0.0 );\n\t\t\tdirectLight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\n\t\tfloat dotNL = dot( geometry.normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tirradiance *= PI;\n\t\t#endif\n\t\treturn irradiance;\n\t}\n#endif\n";
+				if (next === undefined) {
+					next = new StructuredUniform(id);
+					addUniform(container, next);
+				}
 
-	var lights_pars_maps = "#if defined( USE_ENVMAP ) && defined( PHYSICAL )\n\tvec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\n\t\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\tvec4 envMapColor = textureCubeUV( queryVec, 1.0 );\n\t\t#else\n\t\t\tvec4 envMapColor = vec4( 0.0 );\n\t\t#endif\n\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t}\n\tfloat getSpecularMIPLevel( const in float blinnShininessExponent, const in int maxMIPLevel ) {\n\t\tfloat maxMIPLevelScalar = float( maxMIPLevel );\n\t\tfloat desiredMIPLevel = maxMIPLevelScalar + 0.79248 - 0.5 * log2( pow2( blinnShininessExponent ) + 1.0 );\n\t\treturn clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\n\t}\n\tvec3 getLightProbeIndirectRadiance( const in GeometricContext geometry, const in float blinnShininessExponent, const in int maxMIPLevel ) {\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( -geometry.viewDir, geometry.normal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( -geometry.viewDir, geometry.normal, refractionRatio );\n\t\t#endif\n\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\tfloat specularMIPLevel = getSpecularMIPLevel( blinnShininessExponent, maxMIPLevel );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\tvec4 envMapColor = textureCubeUV(queryReflectVec, BlinnExponentToGGXRoughness(blinnShininessExponent));\n\t\t#elif defined( ENVMAP_TYPE_EQUIREC )\n\t\t\tvec2 sampleUV;\n\t\t\tsampleUV.y = asin( clamp( reflectVec.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\t\t\tsampleUV.x = atan( reflectVec.z, reflectVec.x ) * RECIPROCAL_PI2 + 0.5;\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = texture2DLodEXT( envMap, sampleUV, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = texture2D( envMap, sampleUV, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_SPHERE )\n\t\t\tvec3 reflectView = normalize( ( viewMatrix * vec4( reflectVec, 0.0 ) ).xyz + vec3( 0.0,0.0,1.0 ) );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = texture2DLodEXT( envMap, reflectView.xy * 0.5 + 0.5, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = texture2D( envMap, reflectView.xy * 0.5 + 0.5, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#endif\n\t\treturn envMapColor.rgb * envMapIntensity;\n\t}\n#endif\n";
+				container = next;
+			}
+		}
+	} // Root Container
 
-	var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;\n";
 
-	var lights_phong_pars_fragment = "varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct BlinnPhongMaterial {\n\tvec3\tdiffuseColor;\n\tvec3\tspecularColor;\n\tfloat\tspecularShininess;\n\tfloat\tspecularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\t#ifdef TOON\n\t\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\t#else\n\t\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\t\tvec3 irradiance = dotNL * directLight.color;\n\t#endif\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)\n";
+	function WebGLUniforms(gl, program) {
+		this.seq = [];
+		this.map = {};
+		const n = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
 
-	var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nmaterial.specularRoughness = clamp( roughnessFactor, 0.04, 1.0 );\n#ifdef STANDARD\n\tmaterial.specularColor = mix( vec3( DEFAULT_SPECULAR_COEFFICIENT ), diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( MAXIMUM_SPECULAR_COEFFICIENT * pow2( reflectivity ) ), diffuseColor.rgb, metalnessFactor );\n\tmaterial.clearCoat = saturate( clearCoat );\tmaterial.clearCoatRoughness = clamp( clearCoatRoughness, 0.04, 1.0 );\n#endif\n";
+		for (let i = 0; i < n; ++i) {
+			const info = gl.getActiveUniform(program, i),
+						addr = gl.getUniformLocation(program, info.name);
+			parseUniform(info, addr, this);
+		}
+	}
 
-	var lights_physical_pars_fragment = "struct PhysicalMaterial {\n\tvec3\tdiffuseColor;\n\tfloat\tspecularRoughness;\n\tvec3\tspecularColor;\n\t#ifndef STANDARD\n\t\tfloat clearCoat;\n\t\tfloat clearCoatRoughness;\n\t#endif\n};\n#define MAXIMUM_SPECULAR_COEFFICIENT 0.16\n#define DEFAULT_SPECULAR_COEFFICIENT 0.04\nfloat clearCoatDHRApprox( const in float roughness, const in float dotNL ) {\n\treturn DEFAULT_SPECULAR_COEFFICIENT + ( 1.0 - DEFAULT_SPECULAR_COEFFICIENT ) * ( pow( 1.0 - dotNL, 5.0 ) * pow( 1.0 - roughness, 2.0 ) );\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.specularRoughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos - halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos + halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos + halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos - halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(    0, 1,    0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\t#ifndef STANDARD\n\t\tfloat clearCoatDHR = material.clearCoat * clearCoatDHRApprox( material.clearCoatRoughness, dotNL );\n\t#else\n\t\tfloat clearCoatDHR = 0.0;\n\t#endif\n\treflectedLight.directSpecular += ( 1.0 - clearCoatDHR ) * irradiance * BRDF_Specular_GGX( directLight, geometry, material.specularColor, material.specularRoughness );\n\treflectedLight.directDiffuse += ( 1.0 - clearCoatDHR ) * irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n\t#ifndef STANDARD\n\t\treflectedLight.directSpecular += irradiance * material.clearCoat * BRDF_Specular_GGX( directLight, geometry, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearCoatRoughness );\n\t#endif\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 clearCoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t#ifndef STANDARD\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\tfloat dotNL = dotNV;\n\t\tfloat clearCoatDHR = material.clearCoat * clearCoatDHRApprox( material.clearCoatRoughness, dotNL );\n\t#else\n\t\tfloat clearCoatDHR = 0.0;\n\t#endif\n\treflectedLight.indirectSpecular += ( 1.0 - clearCoatDHR ) * radiance * BRDF_Specular_GGX_Environment( geometry, material.specularColor, material.specularRoughness );\n\t#ifndef STANDARD\n\t\treflectedLight.indirectSpecular += clearCoatRadiance * material.clearCoat * BRDF_Specular_GGX_Environment( geometry, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearCoatRoughness );\n\t#endif\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\n#define Material_BlinnShininessExponent( material )   GGXRoughnessToBlinnExponent( material.specularRoughness )\n#define Material_ClearCoat_BlinnShininessExponent( material )   GGXRoughnessToBlinnExponent( material.clearCoatRoughness )\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}\n";
+	WebGLUniforms.prototype.setValue = function (gl, name, value, textures) {
+		const u = this.map[name];
+		if (u !== undefined) u.setValue(gl, value, textures);
+	};
 
-	var lights_fragment_begin = "\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = normalize( vViewPosition );\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointDirectLightIrradiance( pointLight, geometry, directLight );\n\t\t#ifdef USE_SHADOWMAP\n\t\tdirectLight.color *= all( bvec2( pointLight.shadow, directLight.visible ) ) ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotDirectLightIrradiance( spotLight, geometry, directLight );\n\t\t#ifdef USE_SHADOWMAP\n\t\tdirectLight.color *= all( bvec2( spotLight.shadow, directLight.visible ) ) ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalDirectLightIrradiance( directionalLight, geometry, directLight );\n\t\t#ifdef USE_SHADOWMAP\n\t\tdirectLight.color *= all( bvec2( directionalLight.shadow, directLight.visible ) ) ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t}\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearCoatRadiance = vec3( 0.0 );\n#endif\n";
+	WebGLUniforms.prototype.setOptional = function (gl, object, name) {
+		const v = object[name];
+		if (v !== undefined) this.setValue(gl, name, v);
+	}; // Static interface
 
-	var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec3 lightMapIrradiance = texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tlightMapIrradiance *= PI;\n\t\t#endif\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( PHYSICAL ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tirradiance += getLightProbeIndirectIrradiance( geometry, maxMipLevel );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getLightProbeIndirectRadiance( geometry, Material_BlinnShininessExponent( material ), maxMipLevel );\n\t#ifndef STANDARD\n\t\tclearCoatRadiance += getLightProbeIndirectRadiance( geometry, Material_ClearCoat_BlinnShininessExponent( material ), maxMipLevel );\n\t#endif\n#endif\n";
 
-	var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, clearCoatRadiance, geometry, material, reflectedLight );\n#endif\n";
+	WebGLUniforms.upload = function (gl, seq, values, textures) {
+		for (let i = 0, n = seq.length; i !== n; ++i) {
+			const u = seq[i],
+						v = values[u.id];
 
-	var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";
+			if (v.needsUpdate !== false) {
+				// note: always updating when .needsUpdate is undefined
+				u.setValue(gl, v.value, textures);
+			}
+		}
+	};
 
-	var logdepthbuf_pars_fragment = "#ifdef USE_LOGDEPTHBUF\n\tuniform float logDepthBufFC;\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t#endif\n#endif\n";
+	WebGLUniforms.seqWithValue = function (seq, values) {
+		const r = [];
 
-	var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t#endif\n\tuniform float logDepthBufFC;\n#endif";
+		for (let i = 0, n = seq.length; i !== n; ++i) {
+			const u = seq[i];
+			if (u.id in values) r.push(u);
+		}
 
-	var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t#else\n\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\tgl_Position.z *= gl_Position.w;\n\t#endif\n#endif\n";
+		return r;
+	};
 
-	var map_fragment = "#ifdef USE_MAP\n\tvec4 texelColor = texture2D( map, vUv );\n\ttexelColor = mapTexelToLinear( texelColor );\n\tdiffuseColor *= texelColor;\n#endif\n";
+	function WebGLShader(gl, type, string) {
+		const shader = gl.createShader(type);
+		gl.shaderSource(shader, string);
+		gl.compileShader(shader);
+		return shader;
+	}
 
-	var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n";
+	let programIdCount = 0;
 
-	var map_particle_fragment = "#ifdef USE_MAP\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n\tvec4 mapTexel = texture2D( map, uv );\n\tdiffuseColor *= mapTexelToLinear( mapTexel );\n#endif\n";
+	function addLineNumbers(string) {
+		const lines = string.split('\n');
 
-	var map_particle_pars_fragment = "#ifdef USE_MAP\n\tuniform mat3 uvTransform;\n\tuniform sampler2D map;\n#endif\n";
+		for (let i = 0; i < lines.length; i++) {
+			lines[i] = i + 1 + ': ' + lines[i];
+		}
 
-	var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif\n";
+		return lines.join('\n');
+	}
 
-	var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";
+	function getEncodingComponents(encoding) {
+		switch (encoding) {
+			case LinearEncoding:
+				return ['Linear', '( value )'];
 
-	var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal += ( morphNormal0 - normal ) * morphTargetInfluences[ 0 ];\n\tobjectNormal += ( morphNormal1 - normal ) * morphTargetInfluences[ 1 ];\n\tobjectNormal += ( morphNormal2 - normal ) * morphTargetInfluences[ 2 ];\n\tobjectNormal += ( morphNormal3 - normal ) * morphTargetInfluences[ 3 ];\n#endif\n";
+			case sRGBEncoding:
+				return ['sRGB', '( value )'];
 
-	var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\t#ifndef USE_MORPHNORMALS\n\tuniform float morphTargetInfluences[ 8 ];\n\t#else\n\tuniform float morphTargetInfluences[ 4 ];\n\t#endif\n#endif";
+			case RGBEEncoding:
+				return ['RGBE', '( value )'];
 
-	var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed += ( morphTarget0 - position ) * morphTargetInfluences[ 0 ];\n\ttransformed += ( morphTarget1 - position ) * morphTargetInfluences[ 1 ];\n\ttransformed += ( morphTarget2 - position ) * morphTargetInfluences[ 2 ];\n\ttransformed += ( morphTarget3 - position ) * morphTargetInfluences[ 3 ];\n\t#ifndef USE_MORPHNORMALS\n\ttransformed += ( morphTarget4 - position ) * morphTargetInfluences[ 4 ];\n\ttransformed += ( morphTarget5 - position ) * morphTargetInfluences[ 5 ];\n\ttransformed += ( morphTarget6 - position ) * morphTargetInfluences[ 6 ];\n\ttransformed += ( morphTarget7 - position ) * morphTargetInfluences[ 7 ];\n\t#endif\n#endif\n";
+			case RGBM7Encoding:
+				return ['RGBM', '( value, 7.0 )'];
 
-	var normal_fragment_begin = "#ifdef FLAT_SHADED\n\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t#endif\n#endif\n";
+			case RGBM16Encoding:
+				return ['RGBM', '( value, 16.0 )'];
 
-	var normal_fragment_maps = "#ifdef USE_NORMALMAP\n\tnormal = perturbNormal2Arb( -vViewPosition, normal );\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd() );\n#endif\n";
+			case RGBDEncoding:
+				return ['RGBD', '( value, 256.0 )'];
 
-	var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm ) {\n\t\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\n\t\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tvec3 S = normalize( q0 * st1.t - q1 * st0.t );\n\t\tvec3 T = normalize( -q0 * st1.s + q1 * st0.s );\n\t\tvec3 N = normalize( surf_norm );\n\t\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t\tmapN.xy = normalScale * mapN.xy;\n\t\tmat3 tsn = mat3( S, T, N );\n\t\treturn normalize( tsn * mapN );\n\t}\n#endif\n";
+			case GammaEncoding:
+				return ['Gamma', '( value, float( GAMMA_FACTOR ) )'];
 
-	var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256.,  256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn (( near + viewZ ) * far ) / (( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}\n";
+			case LogLuvEncoding:
+				return ['LogLuv', '( value )'];
 
-	var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif\n";
+			default:
+				console.warn('THREE.WebGLProgram: Unsupported encoding:', encoding);
+				return ['Linear', '( value )'];
+		}
+	}
 
-	var project_vertex = "vec4 mvPosition = modelViewMatrix * vec4( transformed, 1.0 );\ngl_Position = projectionMatrix * mvPosition;\n";
+	function getShaderErrors(gl, shader, type) {
+		const status = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
+		const log = gl.getShaderInfoLog(shader).trim();
+		if (status && log === '') return ''; // --enable-privileged-webgl-extension
+		// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );
 
-	var dithering_fragment = "#if defined( DITHERING )\n  gl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif\n";
+		const source = gl.getShaderSource(shader);
+		return 'THREE.WebGLShader: gl.getShaderInfoLog() ' + type + '\n' + log + addLineNumbers(source);
+	}
 
-	var dithering_pars_fragment = "#if defined( DITHERING )\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif\n";
+	function getTexelDecodingFunction(functionName, encoding) {
+		const components = getEncodingComponents(encoding);
+		return 'vec4 ' + functionName + '( vec4 value ) { return ' + components[0] + 'ToLinear' + components[1] + '; }';
+	}
 
-	var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif\n";
+	function getTexelEncodingFunction(functionName, encoding) {
+		const components = getEncodingComponents(encoding);
+		return 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[0] + components[1] + '; }';
+	}
 
-	var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";
+	function getToneMappingFunction(functionName, toneMapping) {
+		let toneMappingName;
 
-	var shadowmap_pars_fragment = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHTS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHTS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHTS ];\n\t#endif\n\t#if NUM_SPOT_LIGHTS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHTS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHTS ];\n\t#endif\n\t#if NUM_POINT_LIGHTS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHTS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHTS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tfloat texture2DShadowLerp( sampler2D depths, vec2 size, vec2 uv, float compare ) {\n\t\tconst vec2 offset = vec2( 0.0, 1.0 );\n\t\tvec2 texelSize = vec2( 1.0 ) / size;\n\t\tvec2 centroidUV = floor( uv * size + 0.5 ) / size;\n\t\tfloat lb = texture2DCompare( depths, centroidUV + texelSize * offset.xx, compare );\n\t\tfloat lt = texture2DCompare( depths, centroidUV + texelSize * offset.xy, compare );\n\t\tfloat rb = texture2DCompare( depths, centroidUV + texelSize * offset.yx, compare );\n\t\tfloat rt = texture2DCompare( depths, centroidUV + texelSize * offset.yy, compare );\n\t\tvec2 f = fract( uv * size + 0.5 );\n\t\tfloat a = mix( lb, lt, f.y );\n\t\tfloat b = mix( rb, rt, f.y );\n\t\tfloat c = mix( a, b, f.x );\n\t\treturn c;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tshadow = (\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif\n";
+		switch (toneMapping) {
+			case LinearToneMapping:
+				toneMappingName = 'Linear';
+				break;
 
-	var shadowmap_pars_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHTS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHTS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHTS ];\n\t#endif\n\t#if NUM_SPOT_LIGHTS > 0\n\t\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHTS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHTS ];\n\t#endif\n\t#if NUM_POINT_LIGHTS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHTS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHTS ];\n\t#endif\n#endif\n";
+			case ReinhardToneMapping:
+				toneMappingName = 'Reinhard';
+				break;
 
-	var shadowmap_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * worldPosition;\n\t}\n\t#endif\n\t#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * worldPosition;\n\t}\n\t#endif\n\t#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * worldPosition;\n\t}\n\t#endif\n#endif\n";
+			case CineonToneMapping:
+				toneMappingName = 'OptimizedCineon';
+				break;
 
-	var shadowmask_pars_fragment = "float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHTS > 0\n\tDirectionalLight directionalLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tshadow *= bool( directionalLight.shadow ) ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#endif\n\t#if NUM_SPOT_LIGHTS > 0\n\tSpotLight spotLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tshadow *= bool( spotLight.shadow ) ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t}\n\t#endif\n\t#if NUM_POINT_LIGHTS > 0\n\tPointLight pointLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tshadow *= bool( pointLight.shadow ) ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#endif\n\t#endif\n\treturn shadow;\n}\n";
+			case ACESFilmicToneMapping:
+				toneMappingName = 'ACESFilmic';
+				break;
 
-	var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";
+			case CustomToneMapping:
+				toneMappingName = 'Custom';
+				break;
 
-	var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\t#ifdef BONE_TEXTURE\n\t\tuniform sampler2D boneTexture;\n\t\tuniform int boneTextureSize;\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tfloat j = i * 4.0;\n\t\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\t\ty = dy * ( y + 0.5 );\n\t\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\t\treturn bone;\n\t\t}\n\t#else\n\t\tuniform mat4 boneMatrices[ MAX_BONES ];\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tmat4 bone = boneMatrices[ int(i) ];\n\t\t\treturn bone;\n\t\t}\n\t#endif\n#endif\n";
+			default:
+				console.warn('THREE.WebGLProgram: Unsupported toneMapping:', toneMapping);
+				toneMappingName = 'Linear';
+		}
 
-	var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif\n";
+		return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';
+	}
 
-	var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix  = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n#endif\n";
+	function generateExtensions(parameters) {
+		const chunks = [parameters.extensionDerivatives || parameters.envMapCubeUV || parameters.bumpMap || parameters.tangentSpaceNormalMap || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ? '#extension GL_OES_standard_derivatives : enable' : '', (parameters.extensionFragDepth || parameters.logarithmicDepthBuffer) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '', parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ? '#extension GL_EXT_draw_buffers : require' : '', (parameters.extensionShaderTextureLOD || parameters.envMap || parameters.transmission > 0.0) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''];
+		return chunks.filter(filterEmptyLine).join('\n');
+	}
 
-	var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";
+	function generateDefines(defines) {
+		const chunks = [];
 
-	var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";
+		for (const name in defines) {
+			const value = defines[name];
+			if (value === false) continue;
+			chunks.push('#define ' + name + ' ' + value);
+		}
 
-	var tonemapping_fragment = "#if defined( TONE_MAPPING )\n  gl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif\n";
+		return chunks.join('\n');
+	}
 
-	var tonemapping_pars_fragment = "#ifndef saturate\n\t#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nuniform float toneMappingWhitePoint;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\n#define Uncharted2Helper( x ) max( ( ( x * ( 0.15 * x + 0.10 * 0.50 ) + 0.20 * 0.02 ) / ( x * ( 0.15 * x + 0.50 ) + 0.20 * 0.30 ) ) - 0.02 / 0.30, vec3( 0.0 ) )\nvec3 Uncharted2ToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( Uncharted2Helper( color ) / Uncharted2Helper( vec3( toneMappingWhitePoint ) ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\n";
+	function fetchAttributeLocations(gl, program) {
+		const attributes = {};
+		const n = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
 
-	var uv_pars_fragment = "#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )\n\tvarying vec2 vUv;\n#endif";
+		for (let i = 0; i < n; i++) {
+			const info = gl.getActiveAttrib(program, i);
+			const name = info.name; // console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );
 
-	var uv_pars_vertex = "#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )\n\tvarying vec2 vUv;\n\tuniform mat3 uvTransform;\n#endif\n";
+			attributes[name] = gl.getAttribLocation(program, name);
+		}
 
-	var uv_vertex = "#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif";
+		return attributes;
+	}
 
-	var uv2_pars_fragment = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif";
+	function filterEmptyLine(string) {
+		return string !== '';
+	}
 
-	var uv2_pars_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n#endif";
+	function replaceLightNums(string, parameters) {
+		return string.replace(/NUM_DIR_LIGHTS/g, parameters.numDirLights).replace(/NUM_SPOT_LIGHTS/g, parameters.numSpotLights).replace(/NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights).replace(/NUM_POINT_LIGHTS/g, parameters.numPointLights).replace(/NUM_HEMI_LIGHTS/g, parameters.numHemiLights).replace(/NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows).replace(/NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows).replace(/NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows);
+	}
 
-	var uv2_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = uv2;\n#endif";
+	function replaceClippingPlaneNums(string, parameters) {
+		return string.replace(/NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes).replace(/UNION_CLIPPING_PLANES/g, parameters.numClippingPlanes - parameters.numClipIntersection);
+	} // Resolve Includes
 
-	var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP )\n\tvec4 worldPosition = modelMatrix * vec4( transformed, 1.0 );\n#endif\n";
 
-	var cube_frag = "uniform samplerCube tCube;\nuniform float tFlip;\nuniform float opacity;\nvarying vec3 vWorldPosition;\nvoid main() {\n\tgl_FragColor = textureCube( tCube, vec3( tFlip * vWorldPosition.x, vWorldPosition.yz ) );\n\tgl_FragColor.a *= opacity;\n}\n";
+	const includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;
 
-	var cube_vert = "varying vec3 vWorldPosition;\n#include <common>\nvoid main() {\n\tvWorldPosition = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}\n";
+	function resolveIncludes(string) {
+		return string.replace(includePattern, includeReplacer);
+	}
 
-	var depth_frag = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - gl_FragCoord.z ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( gl_FragCoord.z );\n\t#endif\n}\n";
+	function includeReplacer(match, include) {
+		const string = ShaderChunk[include];
 
-	var depth_vert = "#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n}\n";
+		if (string === undefined) {
+			throw new Error('Can not resolve #include <' + include + '>');
+		}
 
-	var distanceRGBA_frag = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}\n";
+		return resolveIncludes(string);
+	} // Unroll Loops
 
-	var distanceRGBA_vert = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}\n";
 
-	var equirect_frag = "uniform sampler2D tEquirect;\nvarying vec3 vWorldPosition;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldPosition );\n\tvec2 sampleUV;\n\tsampleUV.y = asin( clamp( direction.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\tsampleUV.x = atan( direction.z, direction.x ) * RECIPROCAL_PI2 + 0.5;\n\tgl_FragColor = texture2D( tEquirect, sampleUV );\n}\n";
+	const deprecatedUnrollLoopPattern = /#pragma unroll_loop[\s]+?for \( int i \= (\d+)\; i < (\d+)\; i \+\+ \) \{([\s\S]+?)(?=\})\}/g;
+	const unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;
 
-	var equirect_vert = "varying vec3 vWorldPosition;\n#include <common>\nvoid main() {\n\tvWorldPosition = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}\n";
+	function unrollLoops(string) {
+		return string.replace(unrollLoopPattern, loopReplacer).replace(deprecatedUnrollLoopPattern, deprecatedLoopReplacer);
+	}
 
-	var linedashed_frag = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <premultiplied_alpha_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}\n";
+	function deprecatedLoopReplacer(match, start, end, snippet) {
+		console.warn('WebGLProgram: #pragma unroll_loop shader syntax is deprecated. Please use #pragma unroll_loop_start syntax instead.');
+		return loopReplacer(match, start, end, snippet);
+	}
 
-	var linedashed_vert = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\tvLineDistance = scale * lineDistance;\n\tvec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}\n";
+	function loopReplacer(match, start, end, snippet) {
+		let string = '';
 
-	var meshbasic_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\treflectedLight.indirectDiffuse += texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <premultiplied_alpha_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}\n";
+		for (let i = parseInt(start); i < parseInt(end); i++) {
+			string += snippet.replace(/\[\s*i\s*\]/g, '[ ' + i + ' ]').replace(/UNROLLED_LOOP_INDEX/g, i);
+		}
 
-	var meshbasic_vert = "#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_ENVMAP\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}\n";
+		return string;
+	} //
 
-	var meshlambert_frag = "uniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\nvarying vec3 vLightFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_pars_maps>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <emissivemap_fragment>\n\treflectedLight.indirectDiffuse = getAmbientLightIrradiance( ambientLightColor );\n\t#include <lightmap_fragment>\n\treflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\n\t#else\n\t\treflectedLight.directDiffuse = vLightFront;\n\t#endif\n\treflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}\n";
 
-	var meshlambert_vert = "#define LAMBERT\nvarying vec3 vLightFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_pars_maps>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <lights_lambert_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}\n";
+	function generatePrecision(parameters) {
+		let precisionstring = 'precision ' + parameters.precision + ' float;\nprecision ' + parameters.precision + ' int;';
 
-	var meshphong_frag = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_pars_maps>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}\n";
+		if (parameters.precision === 'highp') {
+			precisionstring += '\n#define HIGH_PRECISION';
+		} else if (parameters.precision === 'mediump') {
+			precisionstring += '\n#define MEDIUM_PRECISION';
+		} else if (parameters.precision === 'lowp') {
+			precisionstring += '\n#define LOW_PRECISION';
+		}
 
-	var meshphong_vert = "#define PHONG\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}\n";
+		return precisionstring;
+	}
 
-	var meshphysical_frag = "#define PHYSICAL\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifndef STANDARD\n\tuniform float clearCoat;\n\tuniform float clearCoatRoughness;\n#endif\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <cube_uv_reflection_fragment>\n#include <lights_pars_begin>\n#include <lights_pars_maps>\n#include <lights_physical_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}\n";
+	function generateShadowMapTypeDefine(parameters) {
+		let shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';
 
-	var meshphysical_vert = "#define PHYSICAL\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}\n";
+		if (parameters.shadowMapType === PCFShadowMap) {
+			shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';
+		} else if (parameters.shadowMapType === PCFSoftShadowMap) {
+			shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';
+		} else if (parameters.shadowMapType === VSMShadowMap) {
+			shadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';
+		}
 
-	var normal_frag = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\nvoid main() {\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n}\n";
+		return shadowMapTypeDefine;
+	}
 
-	var normal_vert = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}\n";
+	function generateEnvMapTypeDefine(parameters) {
+		let envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
 
-	var points_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <premultiplied_alpha_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}\n";
+		if (parameters.envMap) {
+			switch (parameters.envMapMode) {
+				case CubeReflectionMapping:
+				case CubeRefractionMapping:
+					envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
+					break;
 
-	var points_vert = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\t#ifdef USE_SIZEATTENUATION\n\t\tgl_PointSize = size * ( scale / - mvPosition.z );\n\t#else\n\t\tgl_PointSize = size;\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}\n";
+				case CubeUVReflectionMapping:
+				case CubeUVRefractionMapping:
+					envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
+					break;
+			}
+		}
 
-	var shadow_frag = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <fog_fragment>\n}\n";
+		return envMapTypeDefine;
+	}
 
-	var shadow_vert = "#include <fog_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}\n";
+	function generateEnvMapModeDefine(parameters) {
+		let envMapModeDefine = 'ENVMAP_MODE_REFLECTION';
 
-	var ShaderChunk = {
-		alphamap_fragment: alphamap_fragment,
-		alphamap_pars_fragment: alphamap_pars_fragment,
-		alphatest_fragment: alphatest_fragment,
-		aomap_fragment: aomap_fragment,
-		aomap_pars_fragment: aomap_pars_fragment,
-		begin_vertex: begin_vertex,
-		beginnormal_vertex: beginnormal_vertex,
-		bsdfs: bsdfs,
-		bumpmap_pars_fragment: bumpmap_pars_fragment,
-		clipping_planes_fragment: clipping_planes_fragment,
-		clipping_planes_pars_fragment: clipping_planes_pars_fragment,
-		clipping_planes_pars_vertex: clipping_planes_pars_vertex,
-		clipping_planes_vertex: clipping_planes_vertex,
-		color_fragment: color_fragment,
-		color_pars_fragment: color_pars_fragment,
-		color_pars_vertex: color_pars_vertex,
-		color_vertex: color_vertex,
-		common: common,
-		cube_uv_reflection_fragment: cube_uv_reflection_fragment,
-		defaultnormal_vertex: defaultnormal_vertex,
-		displacementmap_pars_vertex: displacementmap_pars_vertex,
-		displacementmap_vertex: displacementmap_vertex,
-		emissivemap_fragment: emissivemap_fragment,
-		emissivemap_pars_fragment: emissivemap_pars_fragment,
-		encodings_fragment: encodings_fragment,
-		encodings_pars_fragment: encodings_pars_fragment,
-		envmap_fragment: envmap_fragment,
-		envmap_pars_fragment: envmap_pars_fragment,
-		envmap_pars_vertex: envmap_pars_vertex,
-		envmap_vertex: envmap_vertex,
-		fog_vertex: fog_vertex,
-		fog_pars_vertex: fog_pars_vertex,
-		fog_fragment: fog_fragment,
-		fog_pars_fragment: fog_pars_fragment,
-		gradientmap_pars_fragment: gradientmap_pars_fragment,
-		lightmap_fragment: lightmap_fragment,
-		lightmap_pars_fragment: lightmap_pars_fragment,
-		lights_lambert_vertex: lights_lambert_vertex,
-		lights_pars_begin: lights_pars_begin,
-		lights_pars_maps: lights_pars_maps,
-		lights_phong_fragment: lights_phong_fragment,
-		lights_phong_pars_fragment: lights_phong_pars_fragment,
-		lights_physical_fragment: lights_physical_fragment,
-		lights_physical_pars_fragment: lights_physical_pars_fragment,
-		lights_fragment_begin: lights_fragment_begin,
-		lights_fragment_maps: lights_fragment_maps,
-		lights_fragment_end: lights_fragment_end,
-		logdepthbuf_fragment: logdepthbuf_fragment,
-		logdepthbuf_pars_fragment: logdepthbuf_pars_fragment,
-		logdepthbuf_pars_vertex: logdepthbuf_pars_vertex,
-		logdepthbuf_vertex: logdepthbuf_vertex,
-		map_fragment: map_fragment,
-		map_pars_fragment: map_pars_fragment,
-		map_particle_fragment: map_particle_fragment,
-		map_particle_pars_fragment: map_particle_pars_fragment,
-		metalnessmap_fragment: metalnessmap_fragment,
-		metalnessmap_pars_fragment: metalnessmap_pars_fragment,
-		morphnormal_vertex: morphnormal_vertex,
-		morphtarget_pars_vertex: morphtarget_pars_vertex,
-		morphtarget_vertex: morphtarget_vertex,
-		normal_fragment_begin: normal_fragment_begin,
-		normal_fragment_maps: normal_fragment_maps,
-		normalmap_pars_fragment: normalmap_pars_fragment,
-		packing: packing,
-		premultiplied_alpha_fragment: premultiplied_alpha_fragment,
-		project_vertex: project_vertex,
-		dithering_fragment: dithering_fragment,
-		dithering_pars_fragment: dithering_pars_fragment,
-		roughnessmap_fragment: roughnessmap_fragment,
-		roughnessmap_pars_fragment: roughnessmap_pars_fragment,
-		shadowmap_pars_fragment: shadowmap_pars_fragment,
-		shadowmap_pars_vertex: shadowmap_pars_vertex,
-		shadowmap_vertex: shadowmap_vertex,
-		shadowmask_pars_fragment: shadowmask_pars_fragment,
-		skinbase_vertex: skinbase_vertex,
-		skinning_pars_vertex: skinning_pars_vertex,
-		skinning_vertex: skinning_vertex,
-		skinnormal_vertex: skinnormal_vertex,
-		specularmap_fragment: specularmap_fragment,
-		specularmap_pars_fragment: specularmap_pars_fragment,
-		tonemapping_fragment: tonemapping_fragment,
-		tonemapping_pars_fragment: tonemapping_pars_fragment,
-		uv_pars_fragment: uv_pars_fragment,
-		uv_pars_vertex: uv_pars_vertex,
-		uv_vertex: uv_vertex,
-		uv2_pars_fragment: uv2_pars_fragment,
-		uv2_pars_vertex: uv2_pars_vertex,
-		uv2_vertex: uv2_vertex,
-		worldpos_vertex: worldpos_vertex,
+		if (parameters.envMap) {
+			switch (parameters.envMapMode) {
+				case CubeRefractionMapping:
+				case CubeUVRefractionMapping:
+					envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
+					break;
+			}
+		}
 
-		cube_frag: cube_frag,
-		cube_vert: cube_vert,
-		depth_frag: depth_frag,
-		depth_vert: depth_vert,
-		distanceRGBA_frag: distanceRGBA_frag,
-		distanceRGBA_vert: distanceRGBA_vert,
-		equirect_frag: equirect_frag,
-		equirect_vert: equirect_vert,
-		linedashed_frag: linedashed_frag,
-		linedashed_vert: linedashed_vert,
-		meshbasic_frag: meshbasic_frag,
-		meshbasic_vert: meshbasic_vert,
-		meshlambert_frag: meshlambert_frag,
-		meshlambert_vert: meshlambert_vert,
-		meshphong_frag: meshphong_frag,
-		meshphong_vert: meshphong_vert,
-		meshphysical_frag: meshphysical_frag,
-		meshphysical_vert: meshphysical_vert,
-		normal_frag: normal_frag,
-		normal_vert: normal_vert,
-		points_frag: points_frag,
-		points_vert: points_vert,
-		shadow_frag: shadow_frag,
-		shadow_vert: shadow_vert
-	};
+		return envMapModeDefine;
+	}
 
-	/**
-	 * Uniform Utilities
-	 */
+	function generateEnvMapBlendingDefine(parameters) {
+		let envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';
 
-	var UniformsUtils = {
+		if (parameters.envMap) {
+			switch (parameters.combine) {
+				case MultiplyOperation:
+					envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
+					break;
 
-		merge: function ( uniforms ) {
+				case MixOperation:
+					envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
+					break;
 
-			var merged = {};
+				case AddOperation:
+					envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
+					break;
+			}
+		}
 
-			for ( var u = 0; u < uniforms.length; u ++ ) {
+		return envMapBlendingDefine;
+	}
 
-				var tmp = this.clone( uniforms[ u ] );
+	function WebGLProgram(renderer, cacheKey, parameters, bindingStates) {
+		const gl = renderer.getContext();
+		const defines = parameters.defines;
+		let vertexShader = parameters.vertexShader;
+		let fragmentShader = parameters.fragmentShader;
+		const shadowMapTypeDefine = generateShadowMapTypeDefine(parameters);
+		const envMapTypeDefine = generateEnvMapTypeDefine(parameters);
+		const envMapModeDefine = generateEnvMapModeDefine(parameters);
+		const envMapBlendingDefine = generateEnvMapBlendingDefine(parameters);
+		const gammaFactorDefine = renderer.gammaFactor > 0 ? renderer.gammaFactor : 1.0;
+		const customExtensions = parameters.isWebGL2 ? '' : generateExtensions(parameters);
+		const customDefines = generateDefines(defines);
+		const program = gl.createProgram();
+		let prefixVertex, prefixFragment;
+		let versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\n' : '';
 
-				for ( var p in tmp ) {
+		if (parameters.isRawShaderMaterial) {
+			prefixVertex = [customDefines].filter(filterEmptyLine).join('\n');
 
-					merged[ p ] = tmp[ p ];
+			if (prefixVertex.length > 0) {
+				prefixVertex += '\n';
+			}
 
-				}
+			prefixFragment = [customExtensions, customDefines].filter(filterEmptyLine).join('\n');
 
+			if (prefixFragment.length > 0) {
+				prefixFragment += '\n';
 			}
+		} else {
+			prefixVertex = [generatePrecision(parameters), '#define SHADER_NAME ' + parameters.shaderName, customDefines, parameters.instancing ? '#define USE_INSTANCING' : '', parameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '', parameters.supportsVertexTextures ? '#define VERTEX_TEXTURES' : '', '#define GAMMA_FACTOR ' + gammaFactorDefine, '#define MAX_BONES ' + parameters.maxBones, parameters.useFog && parameters.fog ? '#define USE_FOG' : '', parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '', parameters.map ? '#define USE_MAP' : '', parameters.envMap ? '#define USE_ENVMAP' : '', parameters.envMap ? '#define ' + envMapModeDefine : '', parameters.lightMap ? '#define USE_LIGHTMAP' : '', parameters.aoMap ? '#define USE_AOMAP' : '', parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '', parameters.bumpMap ? '#define USE_BUMPMAP' : '', parameters.normalMap ? '#define USE_NORMALMAP' : '', parameters.normalMap && parameters.objectSpaceNormalMap ? '#define OBJECTSPACE_NORMALMAP' : '', parameters.normalMap && parameters.tangentSpaceNormalMap ? '#define TANGENTSPACE_NORMALMAP' : '', parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '', parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '', parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '', parameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '', parameters.specularMap ? '#define USE_SPECULARMAP' : '', parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '', parameters.metalnessMap ? '#define USE_METALNESSMAP' : '', parameters.alphaMap ? '#define USE_ALPHAMAP' : '', parameters.transmission ? '#define USE_TRANSMISSION' : '', parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '', parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '', parameters.vertexTangents ? '#define USE_TANGENT' : '', parameters.vertexColors ? '#define USE_COLOR' : '', parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '', parameters.vertexUvs ? '#define USE_UV' : '', parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '', parameters.flatShading ? '#define FLAT_SHADED' : '', parameters.skinning ? '#define USE_SKINNING' : '', parameters.useVertexTexture ? '#define BONE_TEXTURE' : '', parameters.morphTargets ? '#define USE_MORPHTARGETS' : '', parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '', parameters.doubleSided ? '#define DOUBLE_SIDED' : '', parameters.flipSided ? '#define FLIP_SIDED' : '', parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '', parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '', parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '', parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '', parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ? '#define USE_LOGDEPTHBUF_EXT' : '', 'uniform mat4 modelMatrix;', 'uniform mat4 modelViewMatrix;', 'uniform mat4 projectionMatrix;', 'uniform mat4 viewMatrix;', 'uniform mat3 normalMatrix;', 'uniform vec3 cameraPosition;', 'uniform bool isOrthographic;', '#ifdef USE_INSTANCING', '	attribute mat4 instanceMatrix;', '#endif', '#ifdef USE_INSTANCING_COLOR', '	attribute vec3 instanceColor;', '#endif', 'attribute vec3 position;', 'attribute vec3 normal;', 'attribute vec2 uv;', '#ifdef USE_TANGENT', '	attribute vec4 tangent;', '#endif', '#if defined( USE_COLOR_ALPHA )', '	attribute vec4 color;', '#elif defined( USE_COLOR )', '	attribute vec3 color;', '#endif', '#ifdef USE_MORPHTARGETS', '	attribute vec3 morphTarget0;', '	attribute vec3 morphTarget1;', '	attribute vec3 morphTarget2;', '	attribute vec3 morphTarget3;', '	#ifdef USE_MORPHNORMALS', '		attribute vec3 morphNormal0;', '		attribute vec3 morphNormal1;', '		attribute vec3 morphNormal2;', '		attribute vec3 morphNormal3;', '	#else', '		attribute vec3 morphTarget4;', '		attribute vec3 morphTarget5;', '		attribute vec3 morphTarget6;', '		attribute vec3 morphTarget7;', '	#endif', '#endif', '#ifdef USE_SKINNING', '	attribute vec4 skinIndex;', '	attribute vec4 skinWeight;', '#endif', '\n'].filter(filterEmptyLine).join('\n');
+			prefixFragment = [customExtensions, generatePrecision(parameters), '#define SHADER_NAME ' + parameters.shaderName, customDefines, parameters.alphaTest ? '#define ALPHATEST ' + parameters.alphaTest + (parameters.alphaTest % 1 ? '' : '.0') : '', // add '.0' if integer
+			'#define GAMMA_FACTOR ' + gammaFactorDefine, parameters.useFog && parameters.fog ? '#define USE_FOG' : '', parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '', parameters.map ? '#define USE_MAP' : '', parameters.matcap ? '#define USE_MATCAP' : '', parameters.envMap ? '#define USE_ENVMAP' : '', parameters.envMap ? '#define ' + envMapTypeDefine : '', parameters.envMap ? '#define ' + envMapModeDefine : '', parameters.envMap ? '#define ' + envMapBlendingDefine : '', parameters.lightMap ? '#define USE_LIGHTMAP' : '', parameters.aoMap ? '#define USE_AOMAP' : '', parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '', parameters.bumpMap ? '#define USE_BUMPMAP' : '', parameters.normalMap ? '#define USE_NORMALMAP' : '', parameters.normalMap && parameters.objectSpaceNormalMap ? '#define OBJECTSPACE_NORMALMAP' : '', parameters.normalMap && parameters.tangentSpaceNormalMap ? '#define TANGENTSPACE_NORMALMAP' : '', parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '', parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '', parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '', parameters.specularMap ? '#define USE_SPECULARMAP' : '', parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '', parameters.metalnessMap ? '#define USE_METALNESSMAP' : '', parameters.alphaMap ? '#define USE_ALPHAMAP' : '', parameters.sheen ? '#define USE_SHEEN' : '', parameters.transmission ? '#define USE_TRANSMISSION' : '', parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '', parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '', parameters.vertexTangents ? '#define USE_TANGENT' : '', parameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '', parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '', parameters.vertexUvs ? '#define USE_UV' : '', parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '', parameters.gradientMap ? '#define USE_GRADIENTMAP' : '', parameters.flatShading ? '#define FLAT_SHADED' : '', parameters.doubleSided ? '#define DOUBLE_SIDED' : '', parameters.flipSided ? '#define FLIP_SIDED' : '', parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '', parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '', parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '', parameters.physicallyCorrectLights ? '#define PHYSICALLY_CORRECT_LIGHTS' : '', parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '', parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ? '#define USE_LOGDEPTHBUF_EXT' : '', (parameters.extensionShaderTextureLOD || parameters.envMap) && parameters.rendererExtensionShaderTextureLod ? '#define TEXTURE_LOD_EXT' : '', 'uniform mat4 viewMatrix;', 'uniform vec3 cameraPosition;', 'uniform bool isOrthographic;', parameters.toneMapping !== NoToneMapping ? '#define TONE_MAPPING' : '', parameters.toneMapping !== NoToneMapping ? ShaderChunk['tonemapping_pars_fragment'] : '', // this code is required here because it is used by the toneMapping() function defined below
+			parameters.toneMapping !== NoToneMapping ? getToneMappingFunction('toneMapping', parameters.toneMapping) : '', parameters.dithering ? '#define DITHERING' : '', ShaderChunk['encodings_pars_fragment'], // this code is required here because it is used by the various encoding/decoding function defined below
+			parameters.map ? getTexelDecodingFunction('mapTexelToLinear', parameters.mapEncoding) : '', parameters.matcap ? getTexelDecodingFunction('matcapTexelToLinear', parameters.matcapEncoding) : '', parameters.envMap ? getTexelDecodingFunction('envMapTexelToLinear', parameters.envMapEncoding) : '', parameters.emissiveMap ? getTexelDecodingFunction('emissiveMapTexelToLinear', parameters.emissiveMapEncoding) : '', parameters.lightMap ? getTexelDecodingFunction('lightMapTexelToLinear', parameters.lightMapEncoding) : '', getTexelEncodingFunction('linearToOutputTexel', parameters.outputEncoding), parameters.depthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '', '\n'].filter(filterEmptyLine).join('\n');
+		}
+
+		vertexShader = resolveIncludes(vertexShader);
+		vertexShader = replaceLightNums(vertexShader, parameters);
+		vertexShader = replaceClippingPlaneNums(vertexShader, parameters);
+		fragmentShader = resolveIncludes(fragmentShader);
+		fragmentShader = replaceLightNums(fragmentShader, parameters);
+		fragmentShader = replaceClippingPlaneNums(fragmentShader, parameters);
+		vertexShader = unrollLoops(vertexShader);
+		fragmentShader = unrollLoops(fragmentShader);
+
+		if (parameters.isWebGL2 && parameters.isRawShaderMaterial !== true) {
+			// GLSL 3.0 conversion for built-in materials and ShaderMaterial
+			versionString = '#version 300 es\n';
+			prefixVertex = ['#define attribute in', '#define varying out', '#define texture2D texture'].join('\n') + '\n' + prefixVertex;
+			prefixFragment = ['#define varying in', parameters.glslVersion === GLSL3 ? '' : 'out highp vec4 pc_fragColor;', parameters.glslVersion === GLSL3 ? '' : '#define gl_FragColor pc_fragColor', '#define gl_FragDepthEXT gl_FragDepth', '#define texture2D texture', '#define textureCube texture', '#define texture2DProj textureProj', '#define texture2DLodEXT textureLod', '#define texture2DProjLodEXT textureProjLod', '#define textureCubeLodEXT textureLod', '#define texture2DGradEXT textureGrad', '#define texture2DProjGradEXT textureProjGrad', '#define textureCubeGradEXT textureGrad'].join('\n') + '\n' + prefixFragment;
+		}
+
+		const vertexGlsl = versionString + prefixVertex + vertexShader;
+		const fragmentGlsl = versionString + prefixFragment + fragmentShader; // console.log( '*VERTEX*', vertexGlsl );
+		// console.log( '*FRAGMENT*', fragmentGlsl );
 
-			return merged;
+		const glVertexShader = WebGLShader(gl, gl.VERTEX_SHADER, vertexGlsl);
+		const glFragmentShader = WebGLShader(gl, gl.FRAGMENT_SHADER, fragmentGlsl);
+		gl.attachShader(program, glVertexShader);
+		gl.attachShader(program, glFragmentShader); // Force a particular attribute to index 0.
 
-		},
+		if (parameters.index0AttributeName !== undefined) {
+			gl.bindAttribLocation(program, 0, parameters.index0AttributeName);
+		} else if (parameters.morphTargets === true) {
+			// programs with morphTargets displace position out of attribute 0
+			gl.bindAttribLocation(program, 0, 'position');
+		}
+
+		gl.linkProgram(program); // check for link errors
+
+		if (renderer.debug.checkShaderErrors) {
+			const programLog = gl.getProgramInfoLog(program).trim();
+			const vertexLog = gl.getShaderInfoLog(glVertexShader).trim();
+			const fragmentLog = gl.getShaderInfoLog(glFragmentShader).trim();
+			let runnable = true;
+			let haveDiagnostics = true;
+
+			if (gl.getProgramParameter(program, gl.LINK_STATUS) === false) {
+				runnable = false;
+				const vertexErrors = getShaderErrors(gl, glVertexShader, 'vertex');
+				const fragmentErrors = getShaderErrors(gl, glFragmentShader, 'fragment');
+				console.error('THREE.WebGLProgram: shader error: ', gl.getError(), 'gl.VALIDATE_STATUS', gl.getProgramParameter(program, gl.VALIDATE_STATUS), 'gl.getProgramInfoLog', programLog, vertexErrors, fragmentErrors);
+			} else if (programLog !== '') {
+				console.warn('THREE.WebGLProgram: gl.getProgramInfoLog()', programLog);
+			} else if (vertexLog === '' || fragmentLog === '') {
+				haveDiagnostics = false;
+			}
+
+			if (haveDiagnostics) {
+				this.diagnostics = {
+					runnable: runnable,
+					programLog: programLog,
+					vertexShader: {
+						log: vertexLog,
+						prefix: prefixVertex
+					},
+					fragmentShader: {
+						log: fragmentLog,
+						prefix: prefixFragment
+					}
+				};
+			}
+		} // Clean up
+		// Crashes in iOS9 and iOS10. #18402
+		// gl.detachShader( program, glVertexShader );
+		// gl.detachShader( program, glFragmentShader );
 
-		clone: function ( uniforms_src ) {
 
-			var uniforms_dst = {};
+		gl.deleteShader(glVertexShader);
+		gl.deleteShader(glFragmentShader); // set up caching for uniform locations
 
-			for ( var u in uniforms_src ) {
+		let cachedUniforms;
 
-				uniforms_dst[ u ] = {};
+		this.getUniforms = function () {
+			if (cachedUniforms === undefined) {
+				cachedUniforms = new WebGLUniforms(gl, program);
+			}
 
-				for ( var p in uniforms_src[ u ] ) {
+			return cachedUniforms;
+		}; // set up caching for attribute locations
 
-					var parameter_src = uniforms_src[ u ][ p ];
 
-					if ( parameter_src && ( parameter_src.isColor ||
-						parameter_src.isMatrix3 || parameter_src.isMatrix4 ||
-						parameter_src.isVector2 || parameter_src.isVector3 || parameter_src.isVector4 ||
-						parameter_src.isTexture ) ) {
+		let cachedAttributes;
 
-						uniforms_dst[ u ][ p ] = parameter_src.clone();
+		this.getAttributes = function () {
+			if (cachedAttributes === undefined) {
+				cachedAttributes = fetchAttributeLocations(gl, program);
+			}
 
-					} else if ( Array.isArray( parameter_src ) ) {
+			return cachedAttributes;
+		}; // free resource
 
-						uniforms_dst[ u ][ p ] = parameter_src.slice();
 
-					} else {
+		this.destroy = function () {
+			bindingStates.releaseStatesOfProgram(this);
+			gl.deleteProgram(program);
+			this.program = undefined;
+		}; //
 
-						uniforms_dst[ u ][ p ] = parameter_src;
 
-					}
+		this.name = parameters.shaderName;
+		this.id = programIdCount++;
+		this.cacheKey = cacheKey;
+		this.usedTimes = 1;
+		this.program = program;
+		this.vertexShader = glVertexShader;
+		this.fragmentShader = glFragmentShader;
+		return this;
+	}
+
+	function WebGLPrograms(renderer, cubemaps, extensions, capabilities, bindingStates, clipping) {
+		const programs = [];
+		const isWebGL2 = capabilities.isWebGL2;
+		const logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;
+		const floatVertexTextures = capabilities.floatVertexTextures;
+		const maxVertexUniforms = capabilities.maxVertexUniforms;
+		const vertexTextures = capabilities.vertexTextures;
+		let precision = capabilities.precision;
+		const shaderIDs = {
+			MeshDepthMaterial: 'depth',
+			MeshDistanceMaterial: 'distanceRGBA',
+			MeshNormalMaterial: 'normal',
+			MeshBasicMaterial: 'basic',
+			MeshLambertMaterial: 'lambert',
+			MeshPhongMaterial: 'phong',
+			MeshToonMaterial: 'toon',
+			MeshStandardMaterial: 'physical',
+			MeshPhysicalMaterial: 'physical',
+			MeshMatcapMaterial: 'matcap',
+			LineBasicMaterial: 'basic',
+			LineDashedMaterial: 'dashed',
+			PointsMaterial: 'points',
+			ShadowMaterial: 'shadow',
+			SpriteMaterial: 'sprite'
+		};
+		const parameterNames = ['precision', 'isWebGL2', 'supportsVertexTextures', 'outputEncoding', 'instancing', 'instancingColor', 'map', 'mapEncoding', 'matcap', 'matcapEncoding', 'envMap', 'envMapMode', 'envMapEncoding', 'envMapCubeUV', 'lightMap', 'lightMapEncoding', 'aoMap', 'emissiveMap', 'emissiveMapEncoding', 'bumpMap', 'normalMap', 'objectSpaceNormalMap', 'tangentSpaceNormalMap', 'clearcoatMap', 'clearcoatRoughnessMap', 'clearcoatNormalMap', 'displacementMap', 'specularMap', 'roughnessMap', 'metalnessMap', 'gradientMap', 'alphaMap', 'combine', 'vertexColors', 'vertexAlphas', 'vertexTangents', 'vertexUvs', 'uvsVertexOnly', 'fog', 'useFog', 'fogExp2', 'flatShading', 'sizeAttenuation', 'logarithmicDepthBuffer', 'skinning', 'maxBones', 'useVertexTexture', 'morphTargets', 'morphNormals', 'premultipliedAlpha', 'numDirLights', 'numPointLights', 'numSpotLights', 'numHemiLights', 'numRectAreaLights', 'numDirLightShadows', 'numPointLightShadows', 'numSpotLightShadows', 'shadowMapEnabled', 'shadowMapType', 'toneMapping', 'physicallyCorrectLights', 'alphaTest', 'doubleSided', 'flipSided', 'numClippingPlanes', 'numClipIntersection', 'depthPacking', 'dithering', 'sheen', 'transmission', 'transmissionMap', 'thicknessMap'];
+
+		function getMaxBones(object) {
+			const skeleton = object.skeleton;
+			const bones = skeleton.bones;
 
+			if (floatVertexTextures) {
+				return 1024;
+			} else {
+				// default for when object is not specified
+				// ( for example when prebuilding shader to be used with multiple objects )
+				//
+				//	- leave some extra space for other uniforms
+				//	- limit here is ANGLE's 254 max uniform vectors
+				//		(up to 54 should be safe)
+				const nVertexUniforms = maxVertexUniforms;
+				const nVertexMatrices = Math.floor((nVertexUniforms - 20) / 4);
+				const maxBones = Math.min(nVertexMatrices, bones.length);
+
+				if (maxBones < bones.length) {
+					console.warn('THREE.WebGLRenderer: Skeleton has ' + bones.length + ' bones. This GPU supports ' + maxBones + '.');
+					return 0;
 				}
 
+				return maxBones;
 			}
+		}
 
-			return uniforms_dst;
+		function getTextureEncodingFromMap(map) {
+			let encoding;
+
+			if (map && map.isTexture) {
+				encoding = map.encoding;
+			} else if (map && map.isWebGLRenderTarget) {
+				console.warn('THREE.WebGLPrograms.getTextureEncodingFromMap: don\'t use render targets as textures. Use their .texture property instead.');
+				encoding = map.texture.encoding;
+			} else {
+				encoding = LinearEncoding;
+			}
 
+			return encoding;
 		}
 
-	};
+		function getParameters(material, lights, shadows, scene, object) {
+			const fog = scene.fog;
+			const environment = material.isMeshStandardMaterial ? scene.environment : null;
+			const envMap = cubemaps.get(material.envMap || environment);
+			const shaderID = shaderIDs[material.type]; // heuristics to create shader parameters according to lights in the scene
+			// (not to blow over maxLights budget)
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+			const maxBones = object.isSkinnedMesh ? getMaxBones(object) : 0;
 
-	var ColorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,
-		'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,
-		'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,
-		'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,
-		'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,
-		'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,
-		'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,
-		'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,
-		'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,
-		'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,
-		'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,
-		'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,
-		'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,
-		'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,
-		'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,
-		'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,
-		'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,
-		'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,
-		'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,
-		'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,
-		'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,
-		'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,
-		'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,
-		'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };
+			if (material.precision !== null) {
+				precision = capabilities.getMaxPrecision(material.precision);
 
-	function Color( r, g, b ) {
+				if (precision !== material.precision) {
+					console.warn('THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.');
+				}
+			}
 
-		if ( g === undefined && b === undefined ) {
+			let vertexShader, fragmentShader;
 
-			// r is THREE.Color, hex or string
-			return this.set( r );
+			if (shaderID) {
+				const shader = ShaderLib[shaderID];
+				vertexShader = shader.vertexShader;
+				fragmentShader = shader.fragmentShader;
+			} else {
+				vertexShader = material.vertexShader;
+				fragmentShader = material.fragmentShader;
+			}
 
+			const currentRenderTarget = renderer.getRenderTarget();
+			const parameters = {
+				isWebGL2: isWebGL2,
+				shaderID: shaderID,
+				shaderName: material.type,
+				vertexShader: vertexShader,
+				fragmentShader: fragmentShader,
+				defines: material.defines,
+				isRawShaderMaterial: material.isRawShaderMaterial === true,
+				glslVersion: material.glslVersion,
+				precision: precision,
+				instancing: object.isInstancedMesh === true,
+				instancingColor: object.isInstancedMesh === true && object.instanceColor !== null,
+				supportsVertexTextures: vertexTextures,
+				outputEncoding: currentRenderTarget !== null ? getTextureEncodingFromMap(currentRenderTarget.texture) : renderer.outputEncoding,
+				map: !!material.map,
+				mapEncoding: getTextureEncodingFromMap(material.map),
+				matcap: !!material.matcap,
+				matcapEncoding: getTextureEncodingFromMap(material.matcap),
+				envMap: !!envMap,
+				envMapMode: envMap && envMap.mapping,
+				envMapEncoding: getTextureEncodingFromMap(envMap),
+				envMapCubeUV: !!envMap && (envMap.mapping === CubeUVReflectionMapping || envMap.mapping === CubeUVRefractionMapping),
+				lightMap: !!material.lightMap,
+				lightMapEncoding: getTextureEncodingFromMap(material.lightMap),
+				aoMap: !!material.aoMap,
+				emissiveMap: !!material.emissiveMap,
+				emissiveMapEncoding: getTextureEncodingFromMap(material.emissiveMap),
+				bumpMap: !!material.bumpMap,
+				normalMap: !!material.normalMap,
+				objectSpaceNormalMap: material.normalMapType === ObjectSpaceNormalMap,
+				tangentSpaceNormalMap: material.normalMapType === TangentSpaceNormalMap,
+				clearcoatMap: !!material.clearcoatMap,
+				clearcoatRoughnessMap: !!material.clearcoatRoughnessMap,
+				clearcoatNormalMap: !!material.clearcoatNormalMap,
+				displacementMap: !!material.displacementMap,
+				roughnessMap: !!material.roughnessMap,
+				metalnessMap: !!material.metalnessMap,
+				specularMap: !!material.specularMap,
+				alphaMap: !!material.alphaMap,
+				gradientMap: !!material.gradientMap,
+				sheen: !!material.sheen,
+				transmission: !!material.transmission,
+				transmissionMap: !!material.transmissionMap,
+				thicknessMap: !!material.thicknessMap,
+				combine: material.combine,
+				vertexTangents: material.normalMap && material.vertexTangents,
+				vertexColors: material.vertexColors,
+				vertexAlphas: material.vertexColors === true && object.geometry && object.geometry.attributes.color && object.geometry.attributes.color.itemSize === 4,
+				vertexUvs: !!material.map || !!material.bumpMap || !!material.normalMap || !!material.specularMap || !!material.alphaMap || !!material.emissiveMap || !!material.roughnessMap || !!material.metalnessMap || !!material.clearcoatMap || !!material.clearcoatRoughnessMap || !!material.clearcoatNormalMap || !!material.displacementMap || !!material.transmissionMap || !!material.thicknessMap,
+				uvsVertexOnly: !(!!material.map || !!material.bumpMap || !!material.normalMap || !!material.specularMap || !!material.alphaMap || !!material.emissiveMap || !!material.roughnessMap || !!material.metalnessMap || !!material.clearcoatNormalMap || !!material.transmission || !!material.transmissionMap || !!material.thicknessMap) && !!material.displacementMap,
+				fog: !!fog,
+				useFog: material.fog,
+				fogExp2: fog && fog.isFogExp2,
+				flatShading: !!material.flatShading,
+				sizeAttenuation: material.sizeAttenuation,
+				logarithmicDepthBuffer: logarithmicDepthBuffer,
+				skinning: object.isSkinnedMesh === true && maxBones > 0,
+				maxBones: maxBones,
+				useVertexTexture: floatVertexTextures,
+				morphTargets: material.morphTargets,
+				morphNormals: material.morphNormals,
+				numDirLights: lights.directional.length,
+				numPointLights: lights.point.length,
+				numSpotLights: lights.spot.length,
+				numRectAreaLights: lights.rectArea.length,
+				numHemiLights: lights.hemi.length,
+				numDirLightShadows: lights.directionalShadowMap.length,
+				numPointLightShadows: lights.pointShadowMap.length,
+				numSpotLightShadows: lights.spotShadowMap.length,
+				numClippingPlanes: clipping.numPlanes,
+				numClipIntersection: clipping.numIntersection,
+				dithering: material.dithering,
+				shadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,
+				shadowMapType: renderer.shadowMap.type,
+				toneMapping: material.toneMapped ? renderer.toneMapping : NoToneMapping,
+				physicallyCorrectLights: renderer.physicallyCorrectLights,
+				premultipliedAlpha: material.premultipliedAlpha,
+				alphaTest: material.alphaTest,
+				doubleSided: material.side === DoubleSide,
+				flipSided: material.side === BackSide,
+				depthPacking: material.depthPacking !== undefined ? material.depthPacking : false,
+				index0AttributeName: material.index0AttributeName,
+				extensionDerivatives: material.extensions && material.extensions.derivatives,
+				extensionFragDepth: material.extensions && material.extensions.fragDepth,
+				extensionDrawBuffers: material.extensions && material.extensions.drawBuffers,
+				extensionShaderTextureLOD: material.extensions && material.extensions.shaderTextureLOD,
+				rendererExtensionFragDepth: isWebGL2 || extensions.has('EXT_frag_depth'),
+				rendererExtensionDrawBuffers: isWebGL2 || extensions.has('WEBGL_draw_buffers'),
+				rendererExtensionShaderTextureLod: isWebGL2 || extensions.has('EXT_shader_texture_lod'),
+				customProgramCacheKey: material.customProgramCacheKey()
+			};
+			return parameters;
 		}
 
-		return this.setRGB( r, g, b );
+		function getProgramCacheKey(parameters) {
+			const array = [];
 
-	}
+			if (parameters.shaderID) {
+				array.push(parameters.shaderID);
+			} else {
+				array.push(parameters.fragmentShader);
+				array.push(parameters.vertexShader);
+			}
 
-	Object.assign( Color.prototype, {
+			if (parameters.defines !== undefined) {
+				for (const name in parameters.defines) {
+					array.push(name);
+					array.push(parameters.defines[name]);
+				}
+			}
 
-		isColor: true,
+			if (parameters.isRawShaderMaterial === false) {
+				for (let i = 0; i < parameterNames.length; i++) {
+					array.push(parameters[parameterNames[i]]);
+				}
 
-		r: 1, g: 1, b: 1,
+				array.push(renderer.outputEncoding);
+				array.push(renderer.gammaFactor);
+			}
 
-		set: function ( value ) {
+			array.push(parameters.customProgramCacheKey);
+			return array.join();
+		}
 
-			if ( value && value.isColor ) {
+		function getUniforms(material) {
+			const shaderID = shaderIDs[material.type];
+			let uniforms;
 
-				this.copy( value );
+			if (shaderID) {
+				const shader = ShaderLib[shaderID];
+				uniforms = UniformsUtils.clone(shader.uniforms);
+			} else {
+				uniforms = material.uniforms;
+			}
 
-			} else if ( typeof value === 'number' ) {
+			return uniforms;
+		}
 
-				this.setHex( value );
+		function acquireProgram(parameters, cacheKey) {
+			let program; // Check if code has been already compiled
 
-			} else if ( typeof value === 'string' ) {
+			for (let p = 0, pl = programs.length; p < pl; p++) {
+				const preexistingProgram = programs[p];
 
-				this.setStyle( value );
+				if (preexistingProgram.cacheKey === cacheKey) {
+					program = preexistingProgram;
+					++program.usedTimes;
+					break;
+				}
+			}
 
+			if (program === undefined) {
+				program = new WebGLProgram(renderer, cacheKey, parameters, bindingStates);
+				programs.push(program);
 			}
 
-			return this;
+			return program;
+		}
 
-		},
+		function releaseProgram(program) {
+			if (--program.usedTimes === 0) {
+				// Remove from unordered set
+				const i = programs.indexOf(program);
+				programs[i] = programs[programs.length - 1];
+				programs.pop(); // Free WebGL resources
 
-		setScalar: function ( scalar ) {
+				program.destroy();
+			}
+		}
 
-			this.r = scalar;
-			this.g = scalar;
-			this.b = scalar;
+		return {
+			getParameters: getParameters,
+			getProgramCacheKey: getProgramCacheKey,
+			getUniforms: getUniforms,
+			acquireProgram: acquireProgram,
+			releaseProgram: releaseProgram,
+			// Exposed for resource monitoring & error feedback via renderer.info:
+			programs: programs
+		};
+	}
 
-			return this;
+	function WebGLProperties() {
+		let properties = new WeakMap();
 
-		},
+		function get(object) {
+			let map = properties.get(object);
 
-		setHex: function ( hex ) {
+			if (map === undefined) {
+				map = {};
+				properties.set(object, map);
+			}
 
-			hex = Math.floor( hex );
+			return map;
+		}
 
-			this.r = ( hex >> 16 & 255 ) / 255;
-			this.g = ( hex >> 8 & 255 ) / 255;
-			this.b = ( hex & 255 ) / 255;
+		function remove(object) {
+			properties.delete(object);
+		}
 
-			return this;
+		function update(object, key, value) {
+			properties.get(object)[key] = value;
+		}
 
-		},
+		function dispose() {
+			properties = new WeakMap();
+		}
+
+		return {
+			get: get,
+			remove: remove,
+			update: update,
+			dispose: dispose
+		};
+	}
 
-		setRGB: function ( r, g, b ) {
+	function painterSortStable(a, b) {
+		if (a.groupOrder !== b.groupOrder) {
+			return a.groupOrder - b.groupOrder;
+		} else if (a.renderOrder !== b.renderOrder) {
+			return a.renderOrder - b.renderOrder;
+		} else if (a.program !== b.program) {
+			return a.program.id - b.program.id;
+		} else if (a.material.id !== b.material.id) {
+			return a.material.id - b.material.id;
+		} else if (a.z !== b.z) {
+			return a.z - b.z;
+		} else {
+			return a.id - b.id;
+		}
+	}
 
-			this.r = r;
-			this.g = g;
-			this.b = b;
+	function reversePainterSortStable(a, b) {
+		if (a.groupOrder !== b.groupOrder) {
+			return a.groupOrder - b.groupOrder;
+		} else if (a.renderOrder !== b.renderOrder) {
+			return a.renderOrder - b.renderOrder;
+		} else if (a.z !== b.z) {
+			return b.z - a.z;
+		} else {
+			return a.id - b.id;
+		}
+	}
 
-			return this;
+	function WebGLRenderList(properties) {
+		const renderItems = [];
+		let renderItemsIndex = 0;
+		const opaque = [];
+		const transmissive = [];
+		const transparent = [];
+		const defaultProgram = {
+			id: -1
+		};
 
-		},
+		function init() {
+			renderItemsIndex = 0;
+			opaque.length = 0;
+			transmissive.length = 0;
+			transparent.length = 0;
+		}
 
-		setHSL: function () {
+		function getNextRenderItem(object, geometry, material, groupOrder, z, group) {
+			let renderItem = renderItems[renderItemsIndex];
+			const materialProperties = properties.get(material);
+
+			if (renderItem === undefined) {
+				renderItem = {
+					id: object.id,
+					object: object,
+					geometry: geometry,
+					material: material,
+					program: materialProperties.program || defaultProgram,
+					groupOrder: groupOrder,
+					renderOrder: object.renderOrder,
+					z: z,
+					group: group
+				};
+				renderItems[renderItemsIndex] = renderItem;
+			} else {
+				renderItem.id = object.id;
+				renderItem.object = object;
+				renderItem.geometry = geometry;
+				renderItem.material = material;
+				renderItem.program = materialProperties.program || defaultProgram;
+				renderItem.groupOrder = groupOrder;
+				renderItem.renderOrder = object.renderOrder;
+				renderItem.z = z;
+				renderItem.group = group;
+			}
 
-			function hue2rgb( p, q, t ) {
+			renderItemsIndex++;
+			return renderItem;
+		}
 
-				if ( t < 0 ) t += 1;
-				if ( t > 1 ) t -= 1;
-				if ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;
-				if ( t < 1 / 2 ) return q;
-				if ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );
-				return p;
+		function push(object, geometry, material, groupOrder, z, group) {
+			const renderItem = getNextRenderItem(object, geometry, material, groupOrder, z, group);
 
+			if (material.transmission > 0.0) {
+				transmissive.push(renderItem);
+			} else if (material.transparent === true) {
+				transparent.push(renderItem);
+			} else {
+				opaque.push(renderItem);
 			}
+		}
 
-			return function setHSL( h, s, l ) {
+		function unshift(object, geometry, material, groupOrder, z, group) {
+			const renderItem = getNextRenderItem(object, geometry, material, groupOrder, z, group);
 
-				// h,s,l ranges are in 0.0 - 1.0
-				h = _Math.euclideanModulo( h, 1 );
-				s = _Math.clamp( s, 0, 1 );
-				l = _Math.clamp( l, 0, 1 );
+			if (material.transmission > 0.0) {
+				transmissive.unshift(renderItem);
+			} else if (material.transparent === true) {
+				transparent.unshift(renderItem);
+			} else {
+				opaque.unshift(renderItem);
+			}
+		}
 
-				if ( s === 0 ) {
+		function sort(customOpaqueSort, customTransparentSort) {
+			if (opaque.length > 1) opaque.sort(customOpaqueSort || painterSortStable);
+			if (transmissive.length > 1) transmissive.sort(customTransparentSort || reversePainterSortStable);
+			if (transparent.length > 1) transparent.sort(customTransparentSort || reversePainterSortStable);
+		}
 
-					this.r = this.g = this.b = l;
+		function finish() {
+			// Clear references from inactive renderItems in the list
+			for (let i = renderItemsIndex, il = renderItems.length; i < il; i++) {
+				const renderItem = renderItems[i];
+				if (renderItem.id === null) break;
+				renderItem.id = null;
+				renderItem.object = null;
+				renderItem.geometry = null;
+				renderItem.material = null;
+				renderItem.program = null;
+				renderItem.group = null;
+			}
+		}
 
-				} else {
+		return {
+			opaque: opaque,
+			transmissive: transmissive,
+			transparent: transparent,
+			init: init,
+			push: push,
+			unshift: unshift,
+			finish: finish,
+			sort: sort
+		};
+	}
 
-					var p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );
-					var q = ( 2 * l ) - p;
+	function WebGLRenderLists(properties) {
+		let lists = new WeakMap();
 
-					this.r = hue2rgb( q, p, h + 1 / 3 );
-					this.g = hue2rgb( q, p, h );
-					this.b = hue2rgb( q, p, h - 1 / 3 );
+		function get(scene, renderCallDepth) {
+			let list;
 
+			if (lists.has(scene) === false) {
+				list = new WebGLRenderList(properties);
+				lists.set(scene, [list]);
+			} else {
+				if (renderCallDepth >= lists.get(scene).length) {
+					list = new WebGLRenderList(properties);
+					lists.get(scene).push(list);
+				} else {
+					list = lists.get(scene)[renderCallDepth];
 				}
+			}
 
-				return this;
+			return list;
+		}
 
-			};
+		function dispose() {
+			lists = new WeakMap();
+		}
+
+		return {
+			get: get,
+			dispose: dispose
+		};
+	}
 
-		}(),
+	function UniformsCache() {
+		const lights = {};
+		return {
+			get: function (light) {
+				if (lights[light.id] !== undefined) {
+					return lights[light.id];
+				}
 
-		setStyle: function ( style ) {
+				let uniforms;
 
-			function handleAlpha( string ) {
+				switch (light.type) {
+					case 'DirectionalLight':
+						uniforms = {
+							direction: new Vector3(),
+							color: new Color()
+						};
+						break;
 
-				if ( string === undefined ) return;
+					case 'SpotLight':
+						uniforms = {
+							position: new Vector3(),
+							direction: new Vector3(),
+							color: new Color(),
+							distance: 0,
+							coneCos: 0,
+							penumbraCos: 0,
+							decay: 0
+						};
+						break;
 
-				if ( parseFloat( string ) < 1 ) {
+					case 'PointLight':
+						uniforms = {
+							position: new Vector3(),
+							color: new Color(),
+							distance: 0,
+							decay: 0
+						};
+						break;
 
-					console.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );
+					case 'HemisphereLight':
+						uniforms = {
+							direction: new Vector3(),
+							skyColor: new Color(),
+							groundColor: new Color()
+						};
+						break;
 
+					case 'RectAreaLight':
+						uniforms = {
+							color: new Color(),
+							position: new Vector3(),
+							halfWidth: new Vector3(),
+							halfHeight: new Vector3()
+						};
+						break;
 				}
 
+				lights[light.id] = uniforms;
+				return uniforms;
 			}
+		};
+	}
 
+	function ShadowUniformsCache() {
+		const lights = {};
+		return {
+			get: function (light) {
+				if (lights[light.id] !== undefined) {
+					return lights[light.id];
+				}
 
-			var m;
-
-			if ( m = /^((?:rgb|hsl)a?)\(\s*([^\)]*)\)/.exec( style ) ) {
+				let uniforms;
 
-				// rgb / hsl
+				switch (light.type) {
+					case 'DirectionalLight':
+						uniforms = {
+							shadowBias: 0,
+							shadowNormalBias: 0,
+							shadowRadius: 1,
+							shadowMapSize: new Vector2()
+						};
+						break;
 
-				var color;
-				var name = m[ 1 ];
-				var components = m[ 2 ];
+					case 'SpotLight':
+						uniforms = {
+							shadowBias: 0,
+							shadowNormalBias: 0,
+							shadowRadius: 1,
+							shadowMapSize: new Vector2()
+						};
+						break;
 
-				switch ( name ) {
+					case 'PointLight':
+						uniforms = {
+							shadowBias: 0,
+							shadowNormalBias: 0,
+							shadowRadius: 1,
+							shadowMapSize: new Vector2(),
+							shadowCameraNear: 1,
+							shadowCameraFar: 1000
+						};
+						break;
+					// TODO (abelnation): set RectAreaLight shadow uniforms
+				}
 
-					case 'rgb':
-					case 'rgba':
+				lights[light.id] = uniforms;
+				return uniforms;
+			}
+		};
+	}
 
-						if ( color = /^(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
+	let nextVersion = 0;
 
-							// rgb(255,0,0) rgba(255,0,0,0.5)
-							this.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;
-							this.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;
-							this.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;
+	function shadowCastingLightsFirst(lightA, lightB) {
+		return (lightB.castShadow ? 1 : 0) - (lightA.castShadow ? 1 : 0);
+	}
 
-							handleAlpha( color[ 5 ] );
+	function WebGLLights(extensions, capabilities) {
+		const cache = new UniformsCache();
+		const shadowCache = ShadowUniformsCache();
+		const state = {
+			version: 0,
+			hash: {
+				directionalLength: -1,
+				pointLength: -1,
+				spotLength: -1,
+				rectAreaLength: -1,
+				hemiLength: -1,
+				numDirectionalShadows: -1,
+				numPointShadows: -1,
+				numSpotShadows: -1
+			},
+			ambient: [0, 0, 0],
+			probe: [],
+			directional: [],
+			directionalShadow: [],
+			directionalShadowMap: [],
+			directionalShadowMatrix: [],
+			spot: [],
+			spotShadow: [],
+			spotShadowMap: [],
+			spotShadowMatrix: [],
+			rectArea: [],
+			rectAreaLTC1: null,
+			rectAreaLTC2: null,
+			point: [],
+			pointShadow: [],
+			pointShadowMap: [],
+			pointShadowMatrix: [],
+			hemi: []
+		};
 
-							return this;
+		for (let i = 0; i < 9; i++) state.probe.push(new Vector3());
+
+		const vector3 = new Vector3();
+		const matrix4 = new Matrix4();
+		const matrix42 = new Matrix4();
+
+		function setup(lights) {
+			let r = 0,
+					g = 0,
+					b = 0;
+
+			for (let i = 0; i < 9; i++) state.probe[i].set(0, 0, 0);
+
+			let directionalLength = 0;
+			let pointLength = 0;
+			let spotLength = 0;
+			let rectAreaLength = 0;
+			let hemiLength = 0;
+			let numDirectionalShadows = 0;
+			let numPointShadows = 0;
+			let numSpotShadows = 0;
+			lights.sort(shadowCastingLightsFirst);
+
+			for (let i = 0, l = lights.length; i < l; i++) {
+				const light = lights[i];
+				const color = light.color;
+				const intensity = light.intensity;
+				const distance = light.distance;
+				const shadowMap = light.shadow && light.shadow.map ? light.shadow.map.texture : null;
+
+				if (light.isAmbientLight) {
+					r += color.r * intensity;
+					g += color.g * intensity;
+					b += color.b * intensity;
+				} else if (light.isLightProbe) {
+					for (let j = 0; j < 9; j++) {
+						state.probe[j].addScaledVector(light.sh.coefficients[j], intensity);
+					}
+				} else if (light.isDirectionalLight) {
+					const uniforms = cache.get(light);
+					uniforms.color.copy(light.color).multiplyScalar(light.intensity);
+
+					if (light.castShadow) {
+						const shadow = light.shadow;
+						const shadowUniforms = shadowCache.get(light);
+						shadowUniforms.shadowBias = shadow.bias;
+						shadowUniforms.shadowNormalBias = shadow.normalBias;
+						shadowUniforms.shadowRadius = shadow.radius;
+						shadowUniforms.shadowMapSize = shadow.mapSize;
+						state.directionalShadow[directionalLength] = shadowUniforms;
+						state.directionalShadowMap[directionalLength] = shadowMap;
+						state.directionalShadowMatrix[directionalLength] = light.shadow.matrix;
+						numDirectionalShadows++;
+					}
 
-						}
+					state.directional[directionalLength] = uniforms;
+					directionalLength++;
+				} else if (light.isSpotLight) {
+					const uniforms = cache.get(light);
+					uniforms.position.setFromMatrixPosition(light.matrixWorld);
+					uniforms.color.copy(color).multiplyScalar(intensity);
+					uniforms.distance = distance;
+					uniforms.coneCos = Math.cos(light.angle);
+					uniforms.penumbraCos = Math.cos(light.angle * (1 - light.penumbra));
+					uniforms.decay = light.decay;
+
+					if (light.castShadow) {
+						const shadow = light.shadow;
+						const shadowUniforms = shadowCache.get(light);
+						shadowUniforms.shadowBias = shadow.bias;
+						shadowUniforms.shadowNormalBias = shadow.normalBias;
+						shadowUniforms.shadowRadius = shadow.radius;
+						shadowUniforms.shadowMapSize = shadow.mapSize;
+						state.spotShadow[spotLength] = shadowUniforms;
+						state.spotShadowMap[spotLength] = shadowMap;
+						state.spotShadowMatrix[spotLength] = light.shadow.matrix;
+						numSpotShadows++;
+					}
 
-						if ( color = /^(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
+					state.spot[spotLength] = uniforms;
+					spotLength++;
+				} else if (light.isRectAreaLight) {
+					const uniforms = cache.get(light); // (a) intensity is the total visible light emitted
+					//uniforms.color.copy( color ).multiplyScalar( intensity / ( light.width * light.height * Math.PI ) );
+					// (b) intensity is the brightness of the light
 
-							// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)
-							this.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;
-							this.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;
-							this.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;
+					uniforms.color.copy(color).multiplyScalar(intensity);
+					uniforms.halfWidth.set(light.width * 0.5, 0.0, 0.0);
+					uniforms.halfHeight.set(0.0, light.height * 0.5, 0.0);
+					state.rectArea[rectAreaLength] = uniforms;
+					rectAreaLength++;
+				} else if (light.isPointLight) {
+					const uniforms = cache.get(light);
+					uniforms.color.copy(light.color).multiplyScalar(light.intensity);
+					uniforms.distance = light.distance;
+					uniforms.decay = light.decay;
+
+					if (light.castShadow) {
+						const shadow = light.shadow;
+						const shadowUniforms = shadowCache.get(light);
+						shadowUniforms.shadowBias = shadow.bias;
+						shadowUniforms.shadowNormalBias = shadow.normalBias;
+						shadowUniforms.shadowRadius = shadow.radius;
+						shadowUniforms.shadowMapSize = shadow.mapSize;
+						shadowUniforms.shadowCameraNear = shadow.camera.near;
+						shadowUniforms.shadowCameraFar = shadow.camera.far;
+						state.pointShadow[pointLength] = shadowUniforms;
+						state.pointShadowMap[pointLength] = shadowMap;
+						state.pointShadowMatrix[pointLength] = light.shadow.matrix;
+						numPointShadows++;
+					}
 
-							handleAlpha( color[ 5 ] );
+					state.point[pointLength] = uniforms;
+					pointLength++;
+				} else if (light.isHemisphereLight) {
+					const uniforms = cache.get(light);
+					uniforms.skyColor.copy(light.color).multiplyScalar(intensity);
+					uniforms.groundColor.copy(light.groundColor).multiplyScalar(intensity);
+					state.hemi[hemiLength] = uniforms;
+					hemiLength++;
+				}
+			}
 
-							return this;
+			if (rectAreaLength > 0) {
+				if (capabilities.isWebGL2) {
+					// WebGL 2
+					state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
+					state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;
+				} else {
+					// WebGL 1
+					if (extensions.has('OES_texture_float_linear') === true) {
+						state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
+						state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;
+					} else if (extensions.has('OES_texture_half_float_linear') === true) {
+						state.rectAreaLTC1 = UniformsLib.LTC_HALF_1;
+						state.rectAreaLTC2 = UniformsLib.LTC_HALF_2;
+					} else {
+						console.error('THREE.WebGLRenderer: Unable to use RectAreaLight. Missing WebGL extensions.');
+					}
+				}
+			}
 
-						}
+			state.ambient[0] = r;
+			state.ambient[1] = g;
+			state.ambient[2] = b;
+			const hash = state.hash;
+
+			if (hash.directionalLength !== directionalLength || hash.pointLength !== pointLength || hash.spotLength !== spotLength || hash.rectAreaLength !== rectAreaLength || hash.hemiLength !== hemiLength || hash.numDirectionalShadows !== numDirectionalShadows || hash.numPointShadows !== numPointShadows || hash.numSpotShadows !== numSpotShadows) {
+				state.directional.length = directionalLength;
+				state.spot.length = spotLength;
+				state.rectArea.length = rectAreaLength;
+				state.point.length = pointLength;
+				state.hemi.length = hemiLength;
+				state.directionalShadow.length = numDirectionalShadows;
+				state.directionalShadowMap.length = numDirectionalShadows;
+				state.pointShadow.length = numPointShadows;
+				state.pointShadowMap.length = numPointShadows;
+				state.spotShadow.length = numSpotShadows;
+				state.spotShadowMap.length = numSpotShadows;
+				state.directionalShadowMatrix.length = numDirectionalShadows;
+				state.pointShadowMatrix.length = numPointShadows;
+				state.spotShadowMatrix.length = numSpotShadows;
+				hash.directionalLength = directionalLength;
+				hash.pointLength = pointLength;
+				hash.spotLength = spotLength;
+				hash.rectAreaLength = rectAreaLength;
+				hash.hemiLength = hemiLength;
+				hash.numDirectionalShadows = numDirectionalShadows;
+				hash.numPointShadows = numPointShadows;
+				hash.numSpotShadows = numSpotShadows;
+				state.version = nextVersion++;
+			}
+		}
+
+		function setupView(lights, camera) {
+			let directionalLength = 0;
+			let pointLength = 0;
+			let spotLength = 0;
+			let rectAreaLength = 0;
+			let hemiLength = 0;
+			const viewMatrix = camera.matrixWorldInverse;
+
+			for (let i = 0, l = lights.length; i < l; i++) {
+				const light = lights[i];
+
+				if (light.isDirectionalLight) {
+					const uniforms = state.directional[directionalLength];
+					uniforms.direction.setFromMatrixPosition(light.matrixWorld);
+					vector3.setFromMatrixPosition(light.target.matrixWorld);
+					uniforms.direction.sub(vector3);
+					uniforms.direction.transformDirection(viewMatrix);
+					directionalLength++;
+				} else if (light.isSpotLight) {
+					const uniforms = state.spot[spotLength];
+					uniforms.position.setFromMatrixPosition(light.matrixWorld);
+					uniforms.position.applyMatrix4(viewMatrix);
+					uniforms.direction.setFromMatrixPosition(light.matrixWorld);
+					vector3.setFromMatrixPosition(light.target.matrixWorld);
+					uniforms.direction.sub(vector3);
+					uniforms.direction.transformDirection(viewMatrix);
+					spotLength++;
+				} else if (light.isRectAreaLight) {
+					const uniforms = state.rectArea[rectAreaLength];
+					uniforms.position.setFromMatrixPosition(light.matrixWorld);
+					uniforms.position.applyMatrix4(viewMatrix); // extract local rotation of light to derive width/height half vectors
 
-						break;
+					matrix42.identity();
+					matrix4.copy(light.matrixWorld);
+					matrix4.premultiply(viewMatrix);
+					matrix42.extractRotation(matrix4);
+					uniforms.halfWidth.set(light.width * 0.5, 0.0, 0.0);
+					uniforms.halfHeight.set(0.0, light.height * 0.5, 0.0);
+					uniforms.halfWidth.applyMatrix4(matrix42);
+					uniforms.halfHeight.applyMatrix4(matrix42);
+					rectAreaLength++;
+				} else if (light.isPointLight) {
+					const uniforms = state.point[pointLength];
+					uniforms.position.setFromMatrixPosition(light.matrixWorld);
+					uniforms.position.applyMatrix4(viewMatrix);
+					pointLength++;
+				} else if (light.isHemisphereLight) {
+					const uniforms = state.hemi[hemiLength];
+					uniforms.direction.setFromMatrixPosition(light.matrixWorld);
+					uniforms.direction.transformDirection(viewMatrix);
+					uniforms.direction.normalize();
+					hemiLength++;
+				}
+			}
+		}
 
-					case 'hsl':
-					case 'hsla':
+		return {
+			setup: setup,
+			setupView: setupView,
+			state: state
+		};
+	}
 
-						if ( color = /^([0-9]*\.?[0-9]+)\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
+	function WebGLRenderState(extensions, capabilities) {
+		const lights = new WebGLLights(extensions, capabilities);
+		const lightsArray = [];
+		const shadowsArray = [];
 
-							// hsl(120,50%,50%) hsla(120,50%,50%,0.5)
-							var h = parseFloat( color[ 1 ] ) / 360;
-							var s = parseInt( color[ 2 ], 10 ) / 100;
-							var l = parseInt( color[ 3 ], 10 ) / 100;
+		function init() {
+			lightsArray.length = 0;
+			shadowsArray.length = 0;
+		}
 
-							handleAlpha( color[ 5 ] );
+		function pushLight(light) {
+			lightsArray.push(light);
+		}
 
-							return this.setHSL( h, s, l );
+		function pushShadow(shadowLight) {
+			shadowsArray.push(shadowLight);
+		}
 
-						}
+		function setupLights() {
+			lights.setup(lightsArray);
+		}
 
-						break;
+		function setupLightsView(camera) {
+			lights.setupView(lightsArray, camera);
+		}
 
-				}
+		const state = {
+			lightsArray: lightsArray,
+			shadowsArray: shadowsArray,
+			lights: lights
+		};
+		return {
+			init: init,
+			state: state,
+			setupLights: setupLights,
+			setupLightsView: setupLightsView,
+			pushLight: pushLight,
+			pushShadow: pushShadow
+		};
+	}
 
-			} else if ( m = /^\#([A-Fa-f0-9]+)$/.exec( style ) ) {
+	function WebGLRenderStates(extensions, capabilities) {
+		let renderStates = new WeakMap();
 
-				// hex color
+		function get(scene, renderCallDepth = 0) {
+			let renderState;
+
+			if (renderStates.has(scene) === false) {
+				renderState = new WebGLRenderState(extensions, capabilities);
+				renderStates.set(scene, [renderState]);
+			} else {
+				if (renderCallDepth >= renderStates.get(scene).length) {
+					renderState = new WebGLRenderState(extensions, capabilities);
+					renderStates.get(scene).push(renderState);
+				} else {
+					renderState = renderStates.get(scene)[renderCallDepth];
+				}
+			}
 
-				var hex = m[ 1 ];
-				var size = hex.length;
+			return renderState;
+		}
 
-				if ( size === 3 ) {
+		function dispose() {
+			renderStates = new WeakMap();
+		}
 
-					// #ff0
-					this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 0 ), 16 ) / 255;
-					this.g = parseInt( hex.charAt( 1 ) + hex.charAt( 1 ), 16 ) / 255;
-					this.b = parseInt( hex.charAt( 2 ) + hex.charAt( 2 ), 16 ) / 255;
+		return {
+			get: get,
+			dispose: dispose
+		};
+	}
 
-					return this;
+	/**
+	 * parameters = {
+	 *
+	 *	opacity: <float>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>
+	 * }
+	 */
 
-				} else if ( size === 6 ) {
+	class MeshDepthMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'MeshDepthMaterial';
+			this.depthPacking = BasicDepthPacking;
+			this.morphTargets = false;
+			this.map = null;
+			this.alphaMap = null;
+			this.displacementMap = null;
+			this.displacementScale = 1;
+			this.displacementBias = 0;
+			this.wireframe = false;
+			this.wireframeLinewidth = 1;
+			this.fog = false;
+			this.setValues(parameters);
+		}
 
-					// #ff0000
-					this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 1 ), 16 ) / 255;
-					this.g = parseInt( hex.charAt( 2 ) + hex.charAt( 3 ), 16 ) / 255;
-					this.b = parseInt( hex.charAt( 4 ) + hex.charAt( 5 ), 16 ) / 255;
+		copy(source) {
+			super.copy(source);
+			this.depthPacking = source.depthPacking;
+			this.morphTargets = source.morphTargets;
+			this.map = source.map;
+			this.alphaMap = source.alphaMap;
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			return this;
+		}
 
-					return this;
+	}
 
-				}
+	MeshDepthMaterial.prototype.isMeshDepthMaterial = true;
 
-			}
+	/**
+	 * parameters = {
+	 *
+	 *	referencePosition: <float>,
+	 *	nearDistance: <float>,
+	 *	farDistance: <float>,
+	 *
+	 *	morphTargets: <bool>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>
+	 *
+	 * }
+	 */
 
-			if ( style && style.length > 0 ) {
+	class MeshDistanceMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'MeshDistanceMaterial';
+			this.referencePosition = new Vector3();
+			this.nearDistance = 1;
+			this.farDistance = 1000;
+			this.morphTargets = false;
+			this.map = null;
+			this.alphaMap = null;
+			this.displacementMap = null;
+			this.displacementScale = 1;
+			this.displacementBias = 0;
+			this.fog = false;
+			this.setValues(parameters);
+		}
 
-				// color keywords
-				var hex = ColorKeywords[ style ];
+		copy(source) {
+			super.copy(source);
+			this.referencePosition.copy(source.referencePosition);
+			this.nearDistance = source.nearDistance;
+			this.farDistance = source.farDistance;
+			this.morphTargets = source.morphTargets;
+			this.map = source.map;
+			this.alphaMap = source.alphaMap;
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			return this;
+		}
 
-				if ( hex !== undefined ) {
+	}
 
-					// red
-					this.setHex( hex );
+	MeshDistanceMaterial.prototype.isMeshDistanceMaterial = true;
 
-				} else {
+	var vsm_frag = "uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\n#include <packing>\nvoid main() {\n\tfloat mean = 0.0;\n\tfloat squared_mean = 0.0;\n\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy ) / resolution ) );\n\tfor ( float i = -1.0; i < 1.0 ; i += SAMPLE_RATE) {\n\t\t#ifdef HORIZONTAL_PASS\n\t\t\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( i, 0.0 ) * radius ) / resolution ) );\n\t\t\tmean += distribution.x;\n\t\t\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n\t\t#else\n\t\t\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, i ) * radius ) / resolution ) );\n\t\t\tmean += depth;\n\t\t\tsquared_mean += depth * depth;\n\t\t#endif\n\t}\n\tmean = mean * HALF_SAMPLE_RATE;\n\tsquared_mean = squared_mean * HALF_SAMPLE_RATE;\n\tfloat std_dev = sqrt( squared_mean - mean * mean );\n\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}";
 
-					// unknown color
-					console.warn( 'THREE.Color: Unknown color ' + style );
+	var vsm_vert = "void main() {\n\tgl_Position = vec4( position, 1.0 );\n}";
 
-				}
+	function WebGLShadowMap(_renderer, _objects, _capabilities) {
+		let _frustum = new Frustum();
 
-			}
+		const _shadowMapSize = new Vector2(),
+					_viewportSize = new Vector2(),
+					_viewport = new Vector4(),
+					_depthMaterials = [],
+					_distanceMaterials = [],
+					_materialCache = {},
+					_maxTextureSize = _capabilities.maxTextureSize;
 
-			return this;
+		const shadowSide = {
+			0: BackSide,
+			1: FrontSide,
+			2: DoubleSide
+		};
+		const shadowMaterialVertical = new ShaderMaterial({
+			defines: {
+				SAMPLE_RATE: 2.0 / 8.0,
+				HALF_SAMPLE_RATE: 1.0 / 8.0
+			},
+			uniforms: {
+				shadow_pass: {
+					value: null
+				},
+				resolution: {
+					value: new Vector2()
+				},
+				radius: {
+					value: 4.0
+				}
+			},
+			vertexShader: vsm_vert,
+			fragmentShader: vsm_frag
+		});
+		const shadowMaterialHorizontal = shadowMaterialVertical.clone();
+		shadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;
+		const fullScreenTri = new BufferGeometry();
+		fullScreenTri.setAttribute('position', new BufferAttribute(new Float32Array([-1, -1, 0.5, 3, -1, 0.5, -1, 3, 0.5]), 3));
+		const fullScreenMesh = new Mesh(fullScreenTri, shadowMaterialVertical);
+		const scope = this;
+		this.enabled = false;
+		this.autoUpdate = true;
+		this.needsUpdate = false;
+		this.type = PCFShadowMap;
 
-		},
+		this.render = function (lights, scene, camera) {
+			if (scope.enabled === false) return;
+			if (scope.autoUpdate === false && scope.needsUpdate === false) return;
+			if (lights.length === 0) return;
 
-		clone: function () {
+			const currentRenderTarget = _renderer.getRenderTarget();
 
-			return new this.constructor( this.r, this.g, this.b );
+			const activeCubeFace = _renderer.getActiveCubeFace();
 
-		},
+			const activeMipmapLevel = _renderer.getActiveMipmapLevel();
 
-		copy: function ( color ) {
+			const _state = _renderer.state; // Set GL state for depth map.
 
-			this.r = color.r;
-			this.g = color.g;
-			this.b = color.b;
+			_state.setBlending(NoBlending);
 
-			return this;
+			_state.buffers.color.setClear(1, 1, 1, 1);
 
-		},
+			_state.buffers.depth.setTest(true);
 
-		copyGammaToLinear: function ( color, gammaFactor ) {
+			_state.setScissorTest(false); // render depth map
 
-			if ( gammaFactor === undefined ) gammaFactor = 2.0;
 
-			this.r = Math.pow( color.r, gammaFactor );
-			this.g = Math.pow( color.g, gammaFactor );
-			this.b = Math.pow( color.b, gammaFactor );
+			for (let i = 0, il = lights.length; i < il; i++) {
+				const light = lights[i];
+				const shadow = light.shadow;
 
-			return this;
+				if (shadow === undefined) {
+					console.warn('THREE.WebGLShadowMap:', light, 'has no shadow.');
+					continue;
+				}
 
-		},
+				if (shadow.autoUpdate === false && shadow.needsUpdate === false) continue;
 
-		copyLinearToGamma: function ( color, gammaFactor ) {
+				_shadowMapSize.copy(shadow.mapSize);
 
-			if ( gammaFactor === undefined ) gammaFactor = 2.0;
+				const shadowFrameExtents = shadow.getFrameExtents();
 
-			var safeInverse = ( gammaFactor > 0 ) ? ( 1.0 / gammaFactor ) : 1.0;
+				_shadowMapSize.multiply(shadowFrameExtents);
 
-			this.r = Math.pow( color.r, safeInverse );
-			this.g = Math.pow( color.g, safeInverse );
-			this.b = Math.pow( color.b, safeInverse );
+				_viewportSize.copy(shadow.mapSize);
 
-			return this;
+				if (_shadowMapSize.x > _maxTextureSize || _shadowMapSize.y > _maxTextureSize) {
+					if (_shadowMapSize.x > _maxTextureSize) {
+						_viewportSize.x = Math.floor(_maxTextureSize / shadowFrameExtents.x);
+						_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;
+						shadow.mapSize.x = _viewportSize.x;
+					}
 
-		},
+					if (_shadowMapSize.y > _maxTextureSize) {
+						_viewportSize.y = Math.floor(_maxTextureSize / shadowFrameExtents.y);
+						_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;
+						shadow.mapSize.y = _viewportSize.y;
+					}
+				}
 
-		convertGammaToLinear: function () {
+				if (shadow.map === null && !shadow.isPointLightShadow && this.type === VSMShadowMap) {
+					const pars = {
+						minFilter: LinearFilter,
+						magFilter: LinearFilter,
+						format: RGBAFormat
+					};
+					shadow.map = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y, pars);
+					shadow.map.texture.name = light.name + '.shadowMap';
+					shadow.mapPass = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y, pars);
+					shadow.camera.updateProjectionMatrix();
+				}
 
-			var r = this.r, g = this.g, b = this.b;
+				if (shadow.map === null) {
+					const pars = {
+						minFilter: NearestFilter,
+						magFilter: NearestFilter,
+						format: RGBAFormat
+					};
+					shadow.map = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y, pars);
+					shadow.map.texture.name = light.name + '.shadowMap';
+					shadow.camera.updateProjectionMatrix();
+				}
 
-			this.r = r * r;
-			this.g = g * g;
-			this.b = b * b;
+				_renderer.setRenderTarget(shadow.map);
 
-			return this;
+				_renderer.clear();
 
-		},
+				const viewportCount = shadow.getViewportCount();
 
-		convertLinearToGamma: function () {
+				for (let vp = 0; vp < viewportCount; vp++) {
+					const viewport = shadow.getViewport(vp);
 
-			this.r = Math.sqrt( this.r );
-			this.g = Math.sqrt( this.g );
-			this.b = Math.sqrt( this.b );
+					_viewport.set(_viewportSize.x * viewport.x, _viewportSize.y * viewport.y, _viewportSize.x * viewport.z, _viewportSize.y * viewport.w);
 
-			return this;
+					_state.viewport(_viewport);
 
-		},
+					shadow.updateMatrices(light, vp);
+					_frustum = shadow.getFrustum();
+					renderObject(scene, camera, shadow.camera, light, this.type);
+				} // do blur pass for VSM
 
-		getHex: function () {
 
-			return ( this.r * 255 ) << 16 ^ ( this.g * 255 ) << 8 ^ ( this.b * 255 ) << 0;
+				if (!shadow.isPointLightShadow && this.type === VSMShadowMap) {
+					VSMPass(shadow, camera);
+				}
 
-		},
+				shadow.needsUpdate = false;
+			}
 
-		getHexString: function () {
+			scope.needsUpdate = false;
 
-			return ( '000000' + this.getHex().toString( 16 ) ).slice( - 6 );
+			_renderer.setRenderTarget(currentRenderTarget, activeCubeFace, activeMipmapLevel);
+		};
 
-		},
+		function VSMPass(shadow, camera) {
+			const geometry = _objects.update(fullScreenMesh); // vertical pass
 
-		getHSL: function ( target ) {
 
-			// h,s,l ranges are in 0.0 - 1.0
+			shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;
+			shadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;
+			shadowMaterialVertical.uniforms.radius.value = shadow.radius;
 
-			if ( target === undefined ) {
+			_renderer.setRenderTarget(shadow.mapPass);
 
-				console.warn( 'THREE.Color: .getHSL() target is now required' );
-				target = { h: 0, s: 0, l: 0 };
+			_renderer.clear();
 
-			}
+			_renderer.renderBufferDirect(camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null); // horizontal pass
 
-			var r = this.r, g = this.g, b = this.b;
 
-			var max = Math.max( r, g, b );
-			var min = Math.min( r, g, b );
+			shadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;
+			shadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;
+			shadowMaterialHorizontal.uniforms.radius.value = shadow.radius;
 
-			var hue, saturation;
-			var lightness = ( min + max ) / 2.0;
+			_renderer.setRenderTarget(shadow.map);
 
-			if ( min === max ) {
+			_renderer.clear();
 
-				hue = 0;
-				saturation = 0;
+			_renderer.renderBufferDirect(camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null);
+		}
 
-			} else {
+		function getDepthMaterialVariant(useMorphing) {
+			const index = useMorphing << 0;
+			let material = _depthMaterials[index];
 
-				var delta = max - min;
+			if (material === undefined) {
+				material = new MeshDepthMaterial({
+					depthPacking: RGBADepthPacking,
+					morphTargets: useMorphing
+				});
+				_depthMaterials[index] = material;
+			}
 
-				saturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );
+			return material;
+		}
 
-				switch ( max ) {
+		function getDistanceMaterialVariant(useMorphing) {
+			const index = useMorphing << 0;
+			let material = _distanceMaterials[index];
 
-					case r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;
-					case g: hue = ( b - r ) / delta + 2; break;
-					case b: hue = ( r - g ) / delta + 4; break;
+			if (material === undefined) {
+				material = new MeshDistanceMaterial({
+					morphTargets: useMorphing
+				});
+				_distanceMaterials[index] = material;
+			}
 
-				}
+			return material;
+		}
 
-				hue /= 6;
+		function getDepthMaterial(object, geometry, material, light, shadowCameraNear, shadowCameraFar, type) {
+			let result = null;
+			let getMaterialVariant = getDepthMaterialVariant;
+			let customMaterial = object.customDepthMaterial;
 
+			if (light.isPointLight === true) {
+				getMaterialVariant = getDistanceMaterialVariant;
+				customMaterial = object.customDistanceMaterial;
 			}
 
-			target.h = hue;
-			target.s = saturation;
-			target.l = lightness;
+			if (customMaterial === undefined) {
+				let useMorphing = false;
 
-			return target;
+				if (material.morphTargets === true) {
+					useMorphing = geometry.morphAttributes && geometry.morphAttributes.position && geometry.morphAttributes.position.length > 0;
+				}
 
-		},
+				result = getMaterialVariant(useMorphing);
+			} else {
+				result = customMaterial;
+			}
 
-		getStyle: function () {
+			if (_renderer.localClippingEnabled && material.clipShadows === true && material.clippingPlanes.length !== 0) {
+				// in this case we need a unique material instance reflecting the
+				// appropriate state
+				const keyA = result.uuid,
+							keyB = material.uuid;
+				let materialsForVariant = _materialCache[keyA];
 
-			return 'rgb(' + ( ( this.r * 255 ) | 0 ) + ',' + ( ( this.g * 255 ) | 0 ) + ',' + ( ( this.b * 255 ) | 0 ) + ')';
+				if (materialsForVariant === undefined) {
+					materialsForVariant = {};
+					_materialCache[keyA] = materialsForVariant;
+				}
 
-		},
+				let cachedMaterial = materialsForVariant[keyB];
 
-		offsetHSL: function () {
+				if (cachedMaterial === undefined) {
+					cachedMaterial = result.clone();
+					materialsForVariant[keyB] = cachedMaterial;
+				}
 
-			var hsl = {};
+				result = cachedMaterial;
+			}
 
-			return function ( h, s, l ) {
+			result.visible = material.visible;
+			result.wireframe = material.wireframe;
 
-				this.getHSL( hsl );
+			if (type === VSMShadowMap) {
+				result.side = material.shadowSide !== null ? material.shadowSide : material.side;
+			} else {
+				result.side = material.shadowSide !== null ? material.shadowSide : shadowSide[material.side];
+			}
 
-				hsl.h += h; hsl.s += s; hsl.l += l;
+			result.clipShadows = material.clipShadows;
+			result.clippingPlanes = material.clippingPlanes;
+			result.clipIntersection = material.clipIntersection;
+			result.wireframeLinewidth = material.wireframeLinewidth;
+			result.linewidth = material.linewidth;
 
-				this.setHSL( hsl.h, hsl.s, hsl.l );
+			if (light.isPointLight === true && result.isMeshDistanceMaterial === true) {
+				result.referencePosition.setFromMatrixPosition(light.matrixWorld);
+				result.nearDistance = shadowCameraNear;
+				result.farDistance = shadowCameraFar;
+			}
 
-				return this;
+			return result;
+		}
 
-			};
+		function renderObject(object, camera, shadowCamera, light, type) {
+			if (object.visible === false) return;
+			const visible = object.layers.test(camera.layers);
 
-		}(),
+			if (visible && (object.isMesh || object.isLine || object.isPoints)) {
+				if ((object.castShadow || object.receiveShadow && type === VSMShadowMap) && (!object.frustumCulled || _frustum.intersectsObject(object))) {
+					object.modelViewMatrix.multiplyMatrices(shadowCamera.matrixWorldInverse, object.matrixWorld);
 
-		add: function ( color ) {
+					const geometry = _objects.update(object);
 
-			this.r += color.r;
-			this.g += color.g;
-			this.b += color.b;
+					const material = object.material;
 
-			return this;
+					if (Array.isArray(material)) {
+						const groups = geometry.groups;
 
-		},
+						for (let k = 0, kl = groups.length; k < kl; k++) {
+							const group = groups[k];
+							const groupMaterial = material[group.materialIndex];
 
-		addColors: function ( color1, color2 ) {
+							if (groupMaterial && groupMaterial.visible) {
+								const depthMaterial = getDepthMaterial(object, geometry, groupMaterial, light, shadowCamera.near, shadowCamera.far, type);
 
-			this.r = color1.r + color2.r;
-			this.g = color1.g + color2.g;
-			this.b = color1.b + color2.b;
-
-			return this;
+								_renderer.renderBufferDirect(shadowCamera, null, geometry, depthMaterial, object, group);
+							}
+						}
+					} else if (material.visible) {
+						const depthMaterial = getDepthMaterial(object, geometry, material, light, shadowCamera.near, shadowCamera.far, type);
 
-		},
+						_renderer.renderBufferDirect(shadowCamera, null, geometry, depthMaterial, object, null);
+					}
+				}
+			}
 
-		addScalar: function ( s ) {
+			const children = object.children;
 
-			this.r += s;
-			this.g += s;
-			this.b += s;
+			for (let i = 0, l = children.length; i < l; i++) {
+				renderObject(children[i], camera, shadowCamera, light, type);
+			}
+		}
+	}
 
-			return this;
+	function WebGLState(gl, extensions, capabilities) {
+		const isWebGL2 = capabilities.isWebGL2;
 
-		},
+		function ColorBuffer() {
+			let locked = false;
+			const color = new Vector4();
+			let currentColorMask = null;
+			const currentColorClear = new Vector4(0, 0, 0, 0);
+			return {
+				setMask: function (colorMask) {
+					if (currentColorMask !== colorMask && !locked) {
+						gl.colorMask(colorMask, colorMask, colorMask, colorMask);
+						currentColorMask = colorMask;
+					}
+				},
+				setLocked: function (lock) {
+					locked = lock;
+				},
+				setClear: function (r, g, b, a, premultipliedAlpha) {
+					if (premultipliedAlpha === true) {
+						r *= a;
+						g *= a;
+						b *= a;
+					}
 
-		sub: function ( color ) {
+					color.set(r, g, b, a);
 
-			this.r = Math.max( 0, this.r - color.r );
-			this.g = Math.max( 0, this.g - color.g );
-			this.b = Math.max( 0, this.b - color.b );
+					if (currentColorClear.equals(color) === false) {
+						gl.clearColor(r, g, b, a);
+						currentColorClear.copy(color);
+					}
+				},
+				reset: function () {
+					locked = false;
+					currentColorMask = null;
+					currentColorClear.set(-1, 0, 0, 0); // set to invalid state
+				}
+			};
+		}
 
-			return this;
+		function DepthBuffer() {
+			let locked = false;
+			let currentDepthMask = null;
+			let currentDepthFunc = null;
+			let currentDepthClear = null;
+			return {
+				setTest: function (depthTest) {
+					if (depthTest) {
+						enable(gl.DEPTH_TEST);
+					} else {
+						disable(gl.DEPTH_TEST);
+					}
+				},
+				setMask: function (depthMask) {
+					if (currentDepthMask !== depthMask && !locked) {
+						gl.depthMask(depthMask);
+						currentDepthMask = depthMask;
+					}
+				},
+				setFunc: function (depthFunc) {
+					if (currentDepthFunc !== depthFunc) {
+						if (depthFunc) {
+							switch (depthFunc) {
+								case NeverDepth:
+									gl.depthFunc(gl.NEVER);
+									break;
 
-		},
+								case AlwaysDepth:
+									gl.depthFunc(gl.ALWAYS);
+									break;
 
-		multiply: function ( color ) {
+								case LessDepth:
+									gl.depthFunc(gl.LESS);
+									break;
 
-			this.r *= color.r;
-			this.g *= color.g;
-			this.b *= color.b;
+								case LessEqualDepth:
+									gl.depthFunc(gl.LEQUAL);
+									break;
 
-			return this;
+								case EqualDepth:
+									gl.depthFunc(gl.EQUAL);
+									break;
 
-		},
+								case GreaterEqualDepth:
+									gl.depthFunc(gl.GEQUAL);
+									break;
 
-		multiplyScalar: function ( s ) {
+								case GreaterDepth:
+									gl.depthFunc(gl.GREATER);
+									break;
 
-			this.r *= s;
-			this.g *= s;
-			this.b *= s;
+								case NotEqualDepth:
+									gl.depthFunc(gl.NOTEQUAL);
+									break;
 
-			return this;
+								default:
+									gl.depthFunc(gl.LEQUAL);
+							}
+						} else {
+							gl.depthFunc(gl.LEQUAL);
+						}
 
-		},
+						currentDepthFunc = depthFunc;
+					}
+				},
+				setLocked: function (lock) {
+					locked = lock;
+				},
+				setClear: function (depth) {
+					if (currentDepthClear !== depth) {
+						gl.clearDepth(depth);
+						currentDepthClear = depth;
+					}
+				},
+				reset: function () {
+					locked = false;
+					currentDepthMask = null;
+					currentDepthFunc = null;
+					currentDepthClear = null;
+				}
+			};
+		}
 
-		lerp: function ( color, alpha ) {
+		function StencilBuffer() {
+			let locked = false;
+			let currentStencilMask = null;
+			let currentStencilFunc = null;
+			let currentStencilRef = null;
+			let currentStencilFuncMask = null;
+			let currentStencilFail = null;
+			let currentStencilZFail = null;
+			let currentStencilZPass = null;
+			let currentStencilClear = null;
+			return {
+				setTest: function (stencilTest) {
+					if (!locked) {
+						if (stencilTest) {
+							enable(gl.STENCIL_TEST);
+						} else {
+							disable(gl.STENCIL_TEST);
+						}
+					}
+				},
+				setMask: function (stencilMask) {
+					if (currentStencilMask !== stencilMask && !locked) {
+						gl.stencilMask(stencilMask);
+						currentStencilMask = stencilMask;
+					}
+				},
+				setFunc: function (stencilFunc, stencilRef, stencilMask) {
+					if (currentStencilFunc !== stencilFunc || currentStencilRef !== stencilRef || currentStencilFuncMask !== stencilMask) {
+						gl.stencilFunc(stencilFunc, stencilRef, stencilMask);
+						currentStencilFunc = stencilFunc;
+						currentStencilRef = stencilRef;
+						currentStencilFuncMask = stencilMask;
+					}
+				},
+				setOp: function (stencilFail, stencilZFail, stencilZPass) {
+					if (currentStencilFail !== stencilFail || currentStencilZFail !== stencilZFail || currentStencilZPass !== stencilZPass) {
+						gl.stencilOp(stencilFail, stencilZFail, stencilZPass);
+						currentStencilFail = stencilFail;
+						currentStencilZFail = stencilZFail;
+						currentStencilZPass = stencilZPass;
+					}
+				},
+				setLocked: function (lock) {
+					locked = lock;
+				},
+				setClear: function (stencil) {
+					if (currentStencilClear !== stencil) {
+						gl.clearStencil(stencil);
+						currentStencilClear = stencil;
+					}
+				},
+				reset: function () {
+					locked = false;
+					currentStencilMask = null;
+					currentStencilFunc = null;
+					currentStencilRef = null;
+					currentStencilFuncMask = null;
+					currentStencilFail = null;
+					currentStencilZFail = null;
+					currentStencilZPass = null;
+					currentStencilClear = null;
+				}
+			};
+		} //
+
+
+		const colorBuffer = new ColorBuffer();
+		const depthBuffer = new DepthBuffer();
+		const stencilBuffer = new StencilBuffer();
+		let enabledCapabilities = {};
+		let xrFramebuffer = null;
+		let currentBoundFramebuffers = {};
+		let currentProgram = null;
+		let currentBlendingEnabled = false;
+		let currentBlending = null;
+		let currentBlendEquation = null;
+		let currentBlendSrc = null;
+		let currentBlendDst = null;
+		let currentBlendEquationAlpha = null;
+		let currentBlendSrcAlpha = null;
+		let currentBlendDstAlpha = null;
+		let currentPremultipledAlpha = false;
+		let currentFlipSided = null;
+		let currentCullFace = null;
+		let currentLineWidth = null;
+		let currentPolygonOffsetFactor = null;
+		let currentPolygonOffsetUnits = null;
+		const maxTextures = gl.getParameter(gl.MAX_COMBINED_TEXTURE_IMAGE_UNITS);
+		let lineWidthAvailable = false;
+		let version = 0;
+		const glVersion = gl.getParameter(gl.VERSION);
+
+		if (glVersion.indexOf('WebGL') !== -1) {
+			version = parseFloat(/^WebGL (\d)/.exec(glVersion)[1]);
+			lineWidthAvailable = version >= 1.0;
+		} else if (glVersion.indexOf('OpenGL ES') !== -1) {
+			version = parseFloat(/^OpenGL ES (\d)/.exec(glVersion)[1]);
+			lineWidthAvailable = version >= 2.0;
+		}
+
+		let currentTextureSlot = null;
+		let currentBoundTextures = {};
+		const scissorParam = gl.getParameter(gl.SCISSOR_BOX);
+		const viewportParam = gl.getParameter(gl.VIEWPORT);
+		const currentScissor = new Vector4().fromArray(scissorParam);
+		const currentViewport = new Vector4().fromArray(viewportParam);
+
+		function createTexture(type, target, count) {
+			const data = new Uint8Array(4); // 4 is required to match default unpack alignment of 4.
+
+			const texture = gl.createTexture();
+			gl.bindTexture(type, texture);
+			gl.texParameteri(type, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+			gl.texParameteri(type, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+
+			for (let i = 0; i < count; i++) {
+				gl.texImage2D(target + i, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, data);
+			}
 
-			this.r += ( color.r - this.r ) * alpha;
-			this.g += ( color.g - this.g ) * alpha;
-			this.b += ( color.b - this.b ) * alpha;
+			return texture;
+		}
 
-			return this;
+		const emptyTextures = {};
+		emptyTextures[gl.TEXTURE_2D] = createTexture(gl.TEXTURE_2D, gl.TEXTURE_2D, 1);
+		emptyTextures[gl.TEXTURE_CUBE_MAP] = createTexture(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_CUBE_MAP_POSITIVE_X, 6); // init
 
-		},
+		colorBuffer.setClear(0, 0, 0, 1);
+		depthBuffer.setClear(1);
+		stencilBuffer.setClear(0);
+		enable(gl.DEPTH_TEST);
+		depthBuffer.setFunc(LessEqualDepth);
+		setFlipSided(false);
+		setCullFace(CullFaceBack);
+		enable(gl.CULL_FACE);
+		setBlending(NoBlending); //
 
-		equals: function ( c ) {
+		function enable(id) {
+			if (enabledCapabilities[id] !== true) {
+				gl.enable(id);
+				enabledCapabilities[id] = true;
+			}
+		}
 
-			return ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );
+		function disable(id) {
+			if (enabledCapabilities[id] !== false) {
+				gl.disable(id);
+				enabledCapabilities[id] = false;
+			}
+		}
 
-		},
+		function bindXRFramebuffer(framebuffer) {
+			if (framebuffer !== xrFramebuffer) {
+				gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
+				xrFramebuffer = framebuffer;
+			}
+		}
 
-		fromArray: function ( array, offset ) {
+		function bindFramebuffer(target, framebuffer) {
+			if (framebuffer === null && xrFramebuffer !== null) framebuffer = xrFramebuffer; // use active XR framebuffer if available
 
-			if ( offset === undefined ) offset = 0;
+			if (currentBoundFramebuffers[target] !== framebuffer) {
+				gl.bindFramebuffer(target, framebuffer);
+				currentBoundFramebuffers[target] = framebuffer;
 
-			this.r = array[ offset ];
-			this.g = array[ offset + 1 ];
-			this.b = array[ offset + 2 ];
+				if (isWebGL2) {
+					// gl.DRAW_FRAMEBUFFER is equivalent to gl.FRAMEBUFFER
+					if (target === gl.DRAW_FRAMEBUFFER) {
+						currentBoundFramebuffers[gl.FRAMEBUFFER] = framebuffer;
+					}
 
-			return this;
+					if (target === gl.FRAMEBUFFER) {
+						currentBoundFramebuffers[gl.DRAW_FRAMEBUFFER] = framebuffer;
+					}
+				}
 
-		},
+				return true;
+			}
 
-		toArray: function ( array, offset ) {
+			return false;
+		}
 
-			if ( array === undefined ) array = [];
-			if ( offset === undefined ) offset = 0;
+		function useProgram(program) {
+			if (currentProgram !== program) {
+				gl.useProgram(program);
+				currentProgram = program;
+				return true;
+			}
 
-			array[ offset ] = this.r;
-			array[ offset + 1 ] = this.g;
-			array[ offset + 2 ] = this.b;
+			return false;
+		}
 
-			return array;
+		const equationToGL = {
+			[AddEquation]: gl.FUNC_ADD,
+			[SubtractEquation]: gl.FUNC_SUBTRACT,
+			[ReverseSubtractEquation]: gl.FUNC_REVERSE_SUBTRACT
+		};
 
-		},
+		if (isWebGL2) {
+			equationToGL[MinEquation] = gl.MIN;
+			equationToGL[MaxEquation] = gl.MAX;
+		} else {
+			const extension = extensions.get('EXT_blend_minmax');
+
+			if (extension !== null) {
+				equationToGL[MinEquation] = extension.MIN_EXT;
+				equationToGL[MaxEquation] = extension.MAX_EXT;
+			}
+		}
+
+		const factorToGL = {
+			[ZeroFactor]: gl.ZERO,
+			[OneFactor]: gl.ONE,
+			[SrcColorFactor]: gl.SRC_COLOR,
+			[SrcAlphaFactor]: gl.SRC_ALPHA,
+			[SrcAlphaSaturateFactor]: gl.SRC_ALPHA_SATURATE,
+			[DstColorFactor]: gl.DST_COLOR,
+			[DstAlphaFactor]: gl.DST_ALPHA,
+			[OneMinusSrcColorFactor]: gl.ONE_MINUS_SRC_COLOR,
+			[OneMinusSrcAlphaFactor]: gl.ONE_MINUS_SRC_ALPHA,
+			[OneMinusDstColorFactor]: gl.ONE_MINUS_DST_COLOR,
+			[OneMinusDstAlphaFactor]: gl.ONE_MINUS_DST_ALPHA
+		};
 
-		toJSON: function () {
+		function setBlending(blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha) {
+			if (blending === NoBlending) {
+				if (currentBlendingEnabled === true) {
+					disable(gl.BLEND);
+					currentBlendingEnabled = false;
+				}
 
-			return this.getHex();
+				return;
+			}
 
-		}
+			if (currentBlendingEnabled === false) {
+				enable(gl.BLEND);
+				currentBlendingEnabled = true;
+			}
 
-	} );
+			if (blending !== CustomBlending) {
+				if (blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha) {
+					if (currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation) {
+						gl.blendEquation(gl.FUNC_ADD);
+						currentBlendEquation = AddEquation;
+						currentBlendEquationAlpha = AddEquation;
+					}
 
-	/**
-	 * Uniforms library for shared webgl shaders
-	 */
+					if (premultipliedAlpha) {
+						switch (blending) {
+							case NormalBlending:
+								gl.blendFuncSeparate(gl.ONE, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+								break;
 
-	var UniformsLib = {
+							case AdditiveBlending:
+								gl.blendFunc(gl.ONE, gl.ONE);
+								break;
 
-		common: {
+							case SubtractiveBlending:
+								gl.blendFuncSeparate(gl.ZERO, gl.ZERO, gl.ONE_MINUS_SRC_COLOR, gl.ONE_MINUS_SRC_ALPHA);
+								break;
 
-			diffuse: { value: new Color( 0xeeeeee ) },
-			opacity: { value: 1.0 },
+							case MultiplyBlending:
+								gl.blendFuncSeparate(gl.ZERO, gl.SRC_COLOR, gl.ZERO, gl.SRC_ALPHA);
+								break;
 
-			map: { value: null },
-			uvTransform: { value: new Matrix3() },
+							default:
+								console.error('THREE.WebGLState: Invalid blending: ', blending);
+								break;
+						}
+					} else {
+						switch (blending) {
+							case NormalBlending:
+								gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
+								break;
 
-			alphaMap: { value: null },
+							case AdditiveBlending:
+								gl.blendFunc(gl.SRC_ALPHA, gl.ONE);
+								break;
 
-		},
+							case SubtractiveBlending:
+								gl.blendFunc(gl.ZERO, gl.ONE_MINUS_SRC_COLOR);
+								break;
 
-		specularmap: {
+							case MultiplyBlending:
+								gl.blendFunc(gl.ZERO, gl.SRC_COLOR);
+								break;
 
-			specularMap: { value: null },
+							default:
+								console.error('THREE.WebGLState: Invalid blending: ', blending);
+								break;
+						}
+					}
 
-		},
+					currentBlendSrc = null;
+					currentBlendDst = null;
+					currentBlendSrcAlpha = null;
+					currentBlendDstAlpha = null;
+					currentBlending = blending;
+					currentPremultipledAlpha = premultipliedAlpha;
+				}
 
-		envmap: {
+				return;
+			} // custom blending
 
-			envMap: { value: null },
-			flipEnvMap: { value: - 1 },
-			reflectivity: { value: 1.0 },
-			refractionRatio: { value: 0.98 },
-			maxMipLevel: { value: 0 }
 
-		},
+			blendEquationAlpha = blendEquationAlpha || blendEquation;
+			blendSrcAlpha = blendSrcAlpha || blendSrc;
+			blendDstAlpha = blendDstAlpha || blendDst;
 
-		aomap: {
+			if (blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha) {
+				gl.blendEquationSeparate(equationToGL[blendEquation], equationToGL[blendEquationAlpha]);
+				currentBlendEquation = blendEquation;
+				currentBlendEquationAlpha = blendEquationAlpha;
+			}
 
-			aoMap: { value: null },
-			aoMapIntensity: { value: 1 }
+			if (blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha) {
+				gl.blendFuncSeparate(factorToGL[blendSrc], factorToGL[blendDst], factorToGL[blendSrcAlpha], factorToGL[blendDstAlpha]);
+				currentBlendSrc = blendSrc;
+				currentBlendDst = blendDst;
+				currentBlendSrcAlpha = blendSrcAlpha;
+				currentBlendDstAlpha = blendDstAlpha;
+			}
 
-		},
+			currentBlending = blending;
+			currentPremultipledAlpha = null;
+		}
 
-		lightmap: {
+		function setMaterial(material, frontFaceCW) {
+			material.side === DoubleSide ? disable(gl.CULL_FACE) : enable(gl.CULL_FACE);
+			let flipSided = material.side === BackSide;
+			if (frontFaceCW) flipSided = !flipSided;
+			setFlipSided(flipSided);
+			material.blending === NormalBlending && material.transparent === false ? setBlending(NoBlending) : setBlending(material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha);
+			depthBuffer.setFunc(material.depthFunc);
+			depthBuffer.setTest(material.depthTest);
+			depthBuffer.setMask(material.depthWrite);
+			colorBuffer.setMask(material.colorWrite);
+			const stencilWrite = material.stencilWrite;
+			stencilBuffer.setTest(stencilWrite);
 
-			lightMap: { value: null },
-			lightMapIntensity: { value: 1 }
+			if (stencilWrite) {
+				stencilBuffer.setMask(material.stencilWriteMask);
+				stencilBuffer.setFunc(material.stencilFunc, material.stencilRef, material.stencilFuncMask);
+				stencilBuffer.setOp(material.stencilFail, material.stencilZFail, material.stencilZPass);
+			}
 
-		},
+			setPolygonOffset(material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits);
+			material.alphaToCoverage === true ? enable(gl.SAMPLE_ALPHA_TO_COVERAGE) : disable(gl.SAMPLE_ALPHA_TO_COVERAGE);
+		} //
 
-		emissivemap: {
 
-			emissiveMap: { value: null }
+		function setFlipSided(flipSided) {
+			if (currentFlipSided !== flipSided) {
+				if (flipSided) {
+					gl.frontFace(gl.CW);
+				} else {
+					gl.frontFace(gl.CCW);
+				}
 
-		},
+				currentFlipSided = flipSided;
+			}
+		}
 
-		bumpmap: {
+		function setCullFace(cullFace) {
+			if (cullFace !== CullFaceNone) {
+				enable(gl.CULL_FACE);
 
-			bumpMap: { value: null },
-			bumpScale: { value: 1 }
+				if (cullFace !== currentCullFace) {
+					if (cullFace === CullFaceBack) {
+						gl.cullFace(gl.BACK);
+					} else if (cullFace === CullFaceFront) {
+						gl.cullFace(gl.FRONT);
+					} else {
+						gl.cullFace(gl.FRONT_AND_BACK);
+					}
+				}
+			} else {
+				disable(gl.CULL_FACE);
+			}
 
-		},
+			currentCullFace = cullFace;
+		}
 
-		normalmap: {
+		function setLineWidth(width) {
+			if (width !== currentLineWidth) {
+				if (lineWidthAvailable) gl.lineWidth(width);
+				currentLineWidth = width;
+			}
+		}
 
-			normalMap: { value: null },
-			normalScale: { value: new Vector2( 1, 1 ) }
+		function setPolygonOffset(polygonOffset, factor, units) {
+			if (polygonOffset) {
+				enable(gl.POLYGON_OFFSET_FILL);
 
-		},
+				if (currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units) {
+					gl.polygonOffset(factor, units);
+					currentPolygonOffsetFactor = factor;
+					currentPolygonOffsetUnits = units;
+				}
+			} else {
+				disable(gl.POLYGON_OFFSET_FILL);
+			}
+		}
 
-		displacementmap: {
+		function setScissorTest(scissorTest) {
+			if (scissorTest) {
+				enable(gl.SCISSOR_TEST);
+			} else {
+				disable(gl.SCISSOR_TEST);
+			}
+		} // texture
 
-			displacementMap: { value: null },
-			displacementScale: { value: 1 },
-			displacementBias: { value: 0 }
 
-		},
+		function activeTexture(webglSlot) {
+			if (webglSlot === undefined) webglSlot = gl.TEXTURE0 + maxTextures - 1;
 
-		roughnessmap: {
+			if (currentTextureSlot !== webglSlot) {
+				gl.activeTexture(webglSlot);
+				currentTextureSlot = webglSlot;
+			}
+		}
 
-			roughnessMap: { value: null }
+		function bindTexture(webglType, webglTexture) {
+			if (currentTextureSlot === null) {
+				activeTexture();
+			}
 
-		},
+			let boundTexture = currentBoundTextures[currentTextureSlot];
 
-		metalnessmap: {
+			if (boundTexture === undefined) {
+				boundTexture = {
+					type: undefined,
+					texture: undefined
+				};
+				currentBoundTextures[currentTextureSlot] = boundTexture;
+			}
 
-			metalnessMap: { value: null }
+			if (boundTexture.type !== webglType || boundTexture.texture !== webglTexture) {
+				gl.bindTexture(webglType, webglTexture || emptyTextures[webglType]);
+				boundTexture.type = webglType;
+				boundTexture.texture = webglTexture;
+			}
+		}
 
-		},
+		function unbindTexture() {
+			const boundTexture = currentBoundTextures[currentTextureSlot];
 
-		gradientmap: {
+			if (boundTexture !== undefined && boundTexture.type !== undefined) {
+				gl.bindTexture(boundTexture.type, null);
+				boundTexture.type = undefined;
+				boundTexture.texture = undefined;
+			}
+		}
 
-			gradientMap: { value: null }
+		function compressedTexImage2D() {
+			try {
+				gl.compressedTexImage2D.apply(gl, arguments);
+			} catch (error) {
+				console.error('THREE.WebGLState:', error);
+			}
+		}
 
-		},
+		function texImage2D() {
+			try {
+				gl.texImage2D.apply(gl, arguments);
+			} catch (error) {
+				console.error('THREE.WebGLState:', error);
+			}
+		}
 
-		fog: {
+		function texImage3D() {
+			try {
+				gl.texImage3D.apply(gl, arguments);
+			} catch (error) {
+				console.error('THREE.WebGLState:', error);
+			}
+		} //
 
-			fogDensity: { value: 0.00025 },
-			fogNear: { value: 1 },
-			fogFar: { value: 2000 },
-			fogColor: { value: new Color( 0xffffff ) }
 
-		},
+		function scissor(scissor) {
+			if (currentScissor.equals(scissor) === false) {
+				gl.scissor(scissor.x, scissor.y, scissor.z, scissor.w);
+				currentScissor.copy(scissor);
+			}
+		}
 
-		lights: {
+		function viewport(viewport) {
+			if (currentViewport.equals(viewport) === false) {
+				gl.viewport(viewport.x, viewport.y, viewport.z, viewport.w);
+				currentViewport.copy(viewport);
+			}
+		} //
 
-			ambientLightColor: { value: [] },
-
-			directionalLights: { value: [], properties: {
-				direction: {},
-				color: {},
-
-				shadow: {},
-				shadowBias: {},
-				shadowRadius: {},
-				shadowMapSize: {}
-			} },
-
-			directionalShadowMap: { value: [] },
-			directionalShadowMatrix: { value: [] },
-
-			spotLights: { value: [], properties: {
-				color: {},
-				position: {},
-				direction: {},
-				distance: {},
-				coneCos: {},
-				penumbraCos: {},
-				decay: {},
-
-				shadow: {},
-				shadowBias: {},
-				shadowRadius: {},
-				shadowMapSize: {}
-			} },
-
-			spotShadowMap: { value: [] },
-			spotShadowMatrix: { value: [] },
-
-			pointLights: { value: [], properties: {
-				color: {},
-				position: {},
-				decay: {},
-				distance: {},
-
-				shadow: {},
-				shadowBias: {},
-				shadowRadius: {},
-				shadowMapSize: {},
-				shadowCameraNear: {},
-				shadowCameraFar: {}
-			} },
-
-			pointShadowMap: { value: [] },
-			pointShadowMatrix: { value: [] },
-
-			hemisphereLights: { value: [], properties: {
-				direction: {},
-				skyColor: {},
-				groundColor: {}
-			} },
 
-			// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src
-			rectAreaLights: { value: [], properties: {
-				color: {},
-				position: {},
-				width: {},
-				height: {}
-			} }
+		function reset() {
+			// reset state
+			gl.disable(gl.BLEND);
+			gl.disable(gl.CULL_FACE);
+			gl.disable(gl.DEPTH_TEST);
+			gl.disable(gl.POLYGON_OFFSET_FILL);
+			gl.disable(gl.SCISSOR_TEST);
+			gl.disable(gl.STENCIL_TEST);
+			gl.disable(gl.SAMPLE_ALPHA_TO_COVERAGE);
+			gl.blendEquation(gl.FUNC_ADD);
+			gl.blendFunc(gl.ONE, gl.ZERO);
+			gl.blendFuncSeparate(gl.ONE, gl.ZERO, gl.ONE, gl.ZERO);
+			gl.colorMask(true, true, true, true);
+			gl.clearColor(0, 0, 0, 0);
+			gl.depthMask(true);
+			gl.depthFunc(gl.LESS);
+			gl.clearDepth(1);
+			gl.stencilMask(0xffffffff);
+			gl.stencilFunc(gl.ALWAYS, 0, 0xffffffff);
+			gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
+			gl.clearStencil(0);
+			gl.cullFace(gl.BACK);
+			gl.frontFace(gl.CCW);
+			gl.polygonOffset(0, 0);
+			gl.activeTexture(gl.TEXTURE0);
+			gl.bindFramebuffer(gl.FRAMEBUFFER, null);
+
+			if (isWebGL2 === true) {
+				gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, null);
+				gl.bindFramebuffer(gl.READ_FRAMEBUFFER, null);
+			}
+
+			gl.useProgram(null);
+			gl.lineWidth(1);
+			gl.scissor(0, 0, gl.canvas.width, gl.canvas.height);
+			gl.viewport(0, 0, gl.canvas.width, gl.canvas.height); // reset internals
+
+			enabledCapabilities = {};
+			currentTextureSlot = null;
+			currentBoundTextures = {};
+			xrFramebuffer = null;
+			currentBoundFramebuffers = {};
+			currentProgram = null;
+			currentBlendingEnabled = false;
+			currentBlending = null;
+			currentBlendEquation = null;
+			currentBlendSrc = null;
+			currentBlendDst = null;
+			currentBlendEquationAlpha = null;
+			currentBlendSrcAlpha = null;
+			currentBlendDstAlpha = null;
+			currentPremultipledAlpha = false;
+			currentFlipSided = null;
+			currentCullFace = null;
+			currentLineWidth = null;
+			currentPolygonOffsetFactor = null;
+			currentPolygonOffsetUnits = null;
+			currentScissor.set(0, 0, gl.canvas.width, gl.canvas.height);
+			currentViewport.set(0, 0, gl.canvas.width, gl.canvas.height);
+			colorBuffer.reset();
+			depthBuffer.reset();
+			stencilBuffer.reset();
+		}
 
-		},
+		return {
+			buffers: {
+				color: colorBuffer,
+				depth: depthBuffer,
+				stencil: stencilBuffer
+			},
+			enable: enable,
+			disable: disable,
+			bindFramebuffer: bindFramebuffer,
+			bindXRFramebuffer: bindXRFramebuffer,
+			useProgram: useProgram,
+			setBlending: setBlending,
+			setMaterial: setMaterial,
+			setFlipSided: setFlipSided,
+			setCullFace: setCullFace,
+			setLineWidth: setLineWidth,
+			setPolygonOffset: setPolygonOffset,
+			setScissorTest: setScissorTest,
+			activeTexture: activeTexture,
+			bindTexture: bindTexture,
+			unbindTexture: unbindTexture,
+			compressedTexImage2D: compressedTexImage2D,
+			texImage2D: texImage2D,
+			texImage3D: texImage3D,
+			scissor: scissor,
+			viewport: viewport,
+			reset: reset
+		};
+	}
 
-		points: {
+	function WebGLTextures(_gl, extensions, state, properties, capabilities, utils, info) {
+		const isWebGL2 = capabilities.isWebGL2;
+		const maxTextures = capabilities.maxTextures;
+		const maxCubemapSize = capabilities.maxCubemapSize;
+		const maxTextureSize = capabilities.maxTextureSize;
+		const maxSamples = capabilities.maxSamples;
 
-			diffuse: { value: new Color( 0xeeeeee ) },
-			opacity: { value: 1.0 },
-			size: { value: 1.0 },
-			scale: { value: 1.0 },
-			map: { value: null },
-			uvTransform: { value: new Matrix3() }
+		const _videoTextures = new WeakMap();
 
-		}
+		let _canvas; // cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,
+		// also OffscreenCanvas.getContext("webgl"), but not OffscreenCanvas.getContext("2d")!
+		// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).
 
-	};
 
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author mikael emtinger / http://gomo.se/
-	 */
+		let useOffscreenCanvas = false;
 
-	var ShaderLib = {
+		try {
+			useOffscreenCanvas = typeof OffscreenCanvas !== 'undefined' && new OffscreenCanvas(1, 1).getContext('2d') !== null;
+		} catch (err) {// Ignore any errors
+		}
 
-		basic: {
+		function createCanvas(width, height) {
+			// Use OffscreenCanvas when available. Specially needed in web workers
+			return useOffscreenCanvas ? new OffscreenCanvas(width, height) : document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas');
+		}
 
-			uniforms: UniformsUtils.merge( [
-				UniformsLib.common,
-				UniformsLib.specularmap,
-				UniformsLib.envmap,
-				UniformsLib.aomap,
-				UniformsLib.lightmap,
-				UniformsLib.fog
-			] ),
+		function resizeImage(image, needsPowerOfTwo, needsNewCanvas, maxSize) {
+			let scale = 1; // handle case if texture exceeds max size
 
-			vertexShader: ShaderChunk.meshbasic_vert,
-			fragmentShader: ShaderChunk.meshbasic_frag
+			if (image.width > maxSize || image.height > maxSize) {
+				scale = maxSize / Math.max(image.width, image.height);
+			} // only perform resize if necessary
 
-		},
 
-		lambert: {
+			if (scale < 1 || needsPowerOfTwo === true) {
+				// only perform resize for certain image types
+				if (typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement || typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement || typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap) {
+					const floor = needsPowerOfTwo ? floorPowerOfTwo : Math.floor;
+					const width = floor(scale * image.width);
+					const height = floor(scale * image.height);
+					if (_canvas === undefined) _canvas = createCanvas(width, height); // cube textures can't reuse the same canvas
+
+					const canvas = needsNewCanvas ? createCanvas(width, height) : _canvas;
+					canvas.width = width;
+					canvas.height = height;
+					const context = canvas.getContext('2d');
+					context.drawImage(image, 0, 0, width, height);
+					console.warn('THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').');
+					return canvas;
+				} else {
+					if ('data' in image) {
+						console.warn('THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').');
+					}
 
-			uniforms: UniformsUtils.merge( [
-				UniformsLib.common,
-				UniformsLib.specularmap,
-				UniformsLib.envmap,
-				UniformsLib.aomap,
-				UniformsLib.lightmap,
-				UniformsLib.emissivemap,
-				UniformsLib.fog,
-				UniformsLib.lights,
-				{
-					emissive: { value: new Color( 0x000000 ) }
+					return image;
 				}
-			] ),
+			}
 
-			vertexShader: ShaderChunk.meshlambert_vert,
-			fragmentShader: ShaderChunk.meshlambert_frag
+			return image;
+		}
 
-		},
+		function isPowerOfTwo$1(image) {
+			return isPowerOfTwo(image.width) && isPowerOfTwo(image.height);
+		}
 
-		phong: {
+		function textureNeedsPowerOfTwo(texture) {
+			if (isWebGL2) return false;
+			return texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping || texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
+		}
 
-			uniforms: UniformsUtils.merge( [
-				UniformsLib.common,
-				UniformsLib.specularmap,
-				UniformsLib.envmap,
-				UniformsLib.aomap,
-				UniformsLib.lightmap,
-				UniformsLib.emissivemap,
-				UniformsLib.bumpmap,
-				UniformsLib.normalmap,
-				UniformsLib.displacementmap,
-				UniformsLib.gradientmap,
-				UniformsLib.fog,
-				UniformsLib.lights,
-				{
-					emissive: { value: new Color( 0x000000 ) },
-					specular: { value: new Color( 0x111111 ) },
-					shininess: { value: 30 }
-				}
-			] ),
+		function textureNeedsGenerateMipmaps(texture, supportsMips) {
+			return texture.generateMipmaps && supportsMips && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
+		}
 
-			vertexShader: ShaderChunk.meshphong_vert,
-			fragmentShader: ShaderChunk.meshphong_frag
+		function generateMipmap(target, texture, width, height, depth = 1) {
+			_gl.generateMipmap(target);
 
-		},
+			const textureProperties = properties.get(texture);
+			textureProperties.__maxMipLevel = Math.log2(Math.max(width, height, depth));
+		}
 
-		standard: {
+		function getInternalFormat(internalFormatName, glFormat, glType) {
+			if (isWebGL2 === false) return glFormat;
 
-			uniforms: UniformsUtils.merge( [
-				UniformsLib.common,
-				UniformsLib.envmap,
-				UniformsLib.aomap,
-				UniformsLib.lightmap,
-				UniformsLib.emissivemap,
-				UniformsLib.bumpmap,
-				UniformsLib.normalmap,
-				UniformsLib.displacementmap,
-				UniformsLib.roughnessmap,
-				UniformsLib.metalnessmap,
-				UniformsLib.fog,
-				UniformsLib.lights,
-				{
-					emissive: { value: new Color( 0x000000 ) },
-					roughness: { value: 0.5 },
-					metalness: { value: 0.5 },
-					envMapIntensity: { value: 1 } // temporary
-				}
-			] ),
+			if (internalFormatName !== null) {
+				if (_gl[internalFormatName] !== undefined) return _gl[internalFormatName];
+				console.warn('THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \'' + internalFormatName + '\'');
+			}
 
-			vertexShader: ShaderChunk.meshphysical_vert,
-			fragmentShader: ShaderChunk.meshphysical_frag
+			let internalFormat = glFormat;
 
-		},
+			if (glFormat === _gl.RED) {
+				if (glType === _gl.FLOAT) internalFormat = _gl.R32F;
+				if (glType === _gl.HALF_FLOAT) internalFormat = _gl.R16F;
+				if (glType === _gl.UNSIGNED_BYTE) internalFormat = _gl.R8;
+			}
 
-		points: {
+			if (glFormat === _gl.RGB) {
+				if (glType === _gl.FLOAT) internalFormat = _gl.RGB32F;
+				if (glType === _gl.HALF_FLOAT) internalFormat = _gl.RGB16F;
+				if (glType === _gl.UNSIGNED_BYTE) internalFormat = _gl.RGB8;
+			}
 
-			uniforms: UniformsUtils.merge( [
-				UniformsLib.points,
-				UniformsLib.fog
-			] ),
+			if (glFormat === _gl.RGBA) {
+				if (glType === _gl.FLOAT) internalFormat = _gl.RGBA32F;
+				if (glType === _gl.HALF_FLOAT) internalFormat = _gl.RGBA16F;
+				if (glType === _gl.UNSIGNED_BYTE) internalFormat = _gl.RGBA8;
+			}
 
-			vertexShader: ShaderChunk.points_vert,
-			fragmentShader: ShaderChunk.points_frag
+			if (internalFormat === _gl.R16F || internalFormat === _gl.R32F || internalFormat === _gl.RGBA16F || internalFormat === _gl.RGBA32F) {
+				extensions.get('EXT_color_buffer_float');
+			}
 
-		},
+			return internalFormat;
+		} // Fallback filters for non-power-of-2 textures
 
-		dashed: {
 
-			uniforms: UniformsUtils.merge( [
-				UniformsLib.common,
-				UniformsLib.fog,
-				{
-					scale: { value: 1 },
-					dashSize: { value: 1 },
-					totalSize: { value: 2 }
-				}
-			] ),
+		function filterFallback(f) {
+			if (f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter) {
+				return _gl.NEAREST;
+			}
 
-			vertexShader: ShaderChunk.linedashed_vert,
-			fragmentShader: ShaderChunk.linedashed_frag
+			return _gl.LINEAR;
+		} //
 
-		},
 
-		depth: {
+		function onTextureDispose(event) {
+			const texture = event.target;
+			texture.removeEventListener('dispose', onTextureDispose);
+			deallocateTexture(texture);
 
-			uniforms: UniformsUtils.merge( [
-				UniformsLib.common,
-				UniformsLib.displacementmap
-			] ),
+			if (texture.isVideoTexture) {
+				_videoTextures.delete(texture);
+			}
 
-			vertexShader: ShaderChunk.depth_vert,
-			fragmentShader: ShaderChunk.depth_frag
+			info.memory.textures--;
+		}
 
-		},
+		function onRenderTargetDispose(event) {
+			const renderTarget = event.target;
+			renderTarget.removeEventListener('dispose', onRenderTargetDispose);
+			deallocateRenderTarget(renderTarget);
+		} //
 
-		normal: {
 
-			uniforms: UniformsUtils.merge( [
-				UniformsLib.common,
-				UniformsLib.bumpmap,
-				UniformsLib.normalmap,
-				UniformsLib.displacementmap,
-				{
-					opacity: { value: 1.0 }
-				}
-			] ),
+		function deallocateTexture(texture) {
+			const textureProperties = properties.get(texture);
+			if (textureProperties.__webglInit === undefined) return;
 
-			vertexShader: ShaderChunk.normal_vert,
-			fragmentShader: ShaderChunk.normal_frag
+			_gl.deleteTexture(textureProperties.__webglTexture);
 
-		},
+			properties.remove(texture);
+		}
 
-		/* -------------------------------------------------------------------------
-		//	Cube map shader
-		 ------------------------------------------------------------------------- */
+		function deallocateRenderTarget(renderTarget) {
+			const texture = renderTarget.texture;
+			const renderTargetProperties = properties.get(renderTarget);
+			const textureProperties = properties.get(texture);
+			if (!renderTarget) return;
 
-		cube: {
+			if (textureProperties.__webglTexture !== undefined) {
+				_gl.deleteTexture(textureProperties.__webglTexture);
 
-			uniforms: {
-				tCube: { value: null },
-				tFlip: { value: - 1 },
-				opacity: { value: 1.0 }
-			},
+				info.memory.textures--;
+			}
 
-			vertexShader: ShaderChunk.cube_vert,
-			fragmentShader: ShaderChunk.cube_frag
+			if (renderTarget.depthTexture) {
+				renderTarget.depthTexture.dispose();
+			}
 
-		},
+			if (renderTarget.isWebGLCubeRenderTarget) {
+				for (let i = 0; i < 6; i++) {
+					_gl.deleteFramebuffer(renderTargetProperties.__webglFramebuffer[i]);
 
-		equirect: {
+					if (renderTargetProperties.__webglDepthbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthbuffer[i]);
+				}
+			} else {
+				_gl.deleteFramebuffer(renderTargetProperties.__webglFramebuffer);
 
-			uniforms: {
-				tEquirect: { value: null },
-			},
+				if (renderTargetProperties.__webglDepthbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthbuffer);
+				if (renderTargetProperties.__webglMultisampledFramebuffer) _gl.deleteFramebuffer(renderTargetProperties.__webglMultisampledFramebuffer);
+				if (renderTargetProperties.__webglColorRenderbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglColorRenderbuffer);
+				if (renderTargetProperties.__webglDepthRenderbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthRenderbuffer);
+			}
 
-			vertexShader: ShaderChunk.equirect_vert,
-			fragmentShader: ShaderChunk.equirect_frag
+			if (renderTarget.isWebGLMultipleRenderTargets) {
+				for (let i = 0, il = texture.length; i < il; i++) {
+					const attachmentProperties = properties.get(texture[i]);
 
-		},
+					if (attachmentProperties.__webglTexture) {
+						_gl.deleteTexture(attachmentProperties.__webglTexture);
 
-		distanceRGBA: {
+						info.memory.textures--;
+					}
 
-			uniforms: UniformsUtils.merge( [
-				UniformsLib.common,
-				UniformsLib.displacementmap,
-				{
-					referencePosition: { value: new Vector3() },
-					nearDistance: { value: 1 },
-					farDistance: { value: 1000 }
+					properties.remove(texture[i]);
 				}
-			] ),
-
-			vertexShader: ShaderChunk.distanceRGBA_vert,
-			fragmentShader: ShaderChunk.distanceRGBA_frag
-
-		},
+			}
 
-		shadow: {
+			properties.remove(texture);
+			properties.remove(renderTarget);
+		} //
 
-			uniforms: UniformsUtils.merge( [
-				UniformsLib.lights,
-				UniformsLib.fog,
-				{
-					color: { value: new Color( 0x00000 ) },
-					opacity: { value: 1.0 }
-				},
-			] ),
 
-			vertexShader: ShaderChunk.shadow_vert,
-			fragmentShader: ShaderChunk.shadow_frag
+		let textureUnits = 0;
 
+		function resetTextureUnits() {
+			textureUnits = 0;
 		}
 
-	};
-
-	ShaderLib.physical = {
+		function allocateTextureUnit() {
+			const textureUnit = textureUnits;
 
-		uniforms: UniformsUtils.merge( [
-			ShaderLib.standard.uniforms,
-			{
-				clearCoat: { value: 0 },
-				clearCoatRoughness: { value: 0 }
+			if (textureUnit >= maxTextures) {
+				console.warn('THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures);
 			}
-		] ),
-
-		vertexShader: ShaderChunk.meshphysical_vert,
-		fragmentShader: ShaderChunk.meshphysical_frag
 
-	};
+			textureUnits += 1;
+			return textureUnit;
+		} //
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
 
-	function WebGLAttributes( gl ) {
+		function setTexture2D(texture, slot) {
+			const textureProperties = properties.get(texture);
+			if (texture.isVideoTexture) updateVideoTexture(texture);
 
-		var buffers = new WeakMap();
+			if (texture.version > 0 && textureProperties.__version !== texture.version) {
+				const image = texture.image;
 
-		function createBuffer( attribute, bufferType ) {
+				if (image === undefined) {
+					console.warn('THREE.WebGLRenderer: Texture marked for update but image is undefined');
+				} else if (image.complete === false) {
+					console.warn('THREE.WebGLRenderer: Texture marked for update but image is incomplete');
+				} else {
+					uploadTexture(textureProperties, texture, slot);
+					return;
+				}
+			}
 
-			var array = attribute.array;
-			var usage = attribute.dynamic ? gl.DYNAMIC_DRAW : gl.STATIC_DRAW;
+			state.activeTexture(_gl.TEXTURE0 + slot);
+			state.bindTexture(_gl.TEXTURE_2D, textureProperties.__webglTexture);
+		}
 
-			var buffer = gl.createBuffer();
+		function setTexture2DArray(texture, slot) {
+			const textureProperties = properties.get(texture);
 
-			gl.bindBuffer( bufferType, buffer );
-			gl.bufferData( bufferType, array, usage );
+			if (texture.version > 0 && textureProperties.__version !== texture.version) {
+				uploadTexture(textureProperties, texture, slot);
+				return;
+			}
 
-			attribute.onUploadCallback();
+			state.activeTexture(_gl.TEXTURE0 + slot);
+			state.bindTexture(_gl.TEXTURE_2D_ARRAY, textureProperties.__webglTexture);
+		}
 
-			var type = gl.FLOAT;
+		function setTexture3D(texture, slot) {
+			const textureProperties = properties.get(texture);
 
-			if ( array instanceof Float32Array ) {
+			if (texture.version > 0 && textureProperties.__version !== texture.version) {
+				uploadTexture(textureProperties, texture, slot);
+				return;
+			}
 
-				type = gl.FLOAT;
+			state.activeTexture(_gl.TEXTURE0 + slot);
+			state.bindTexture(_gl.TEXTURE_3D, textureProperties.__webglTexture);
+		}
 
-			} else if ( array instanceof Float64Array ) {
+		function setTextureCube(texture, slot) {
+			const textureProperties = properties.get(texture);
 
-				console.warn( 'THREE.WebGLAttributes: Unsupported data buffer format: Float64Array.' );
+			if (texture.version > 0 && textureProperties.__version !== texture.version) {
+				uploadCubeTexture(textureProperties, texture, slot);
+				return;
+			}
 
-			} else if ( array instanceof Uint16Array ) {
+			state.activeTexture(_gl.TEXTURE0 + slot);
+			state.bindTexture(_gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture);
+		}
 
-				type = gl.UNSIGNED_SHORT;
+		const wrappingToGL = {
+			[RepeatWrapping]: _gl.REPEAT,
+			[ClampToEdgeWrapping]: _gl.CLAMP_TO_EDGE,
+			[MirroredRepeatWrapping]: _gl.MIRRORED_REPEAT
+		};
+		const filterToGL = {
+			[NearestFilter]: _gl.NEAREST,
+			[NearestMipmapNearestFilter]: _gl.NEAREST_MIPMAP_NEAREST,
+			[NearestMipmapLinearFilter]: _gl.NEAREST_MIPMAP_LINEAR,
+			[LinearFilter]: _gl.LINEAR,
+			[LinearMipmapNearestFilter]: _gl.LINEAR_MIPMAP_NEAREST,
+			[LinearMipmapLinearFilter]: _gl.LINEAR_MIPMAP_LINEAR
+		};
 
-			} else if ( array instanceof Int16Array ) {
+		function setTextureParameters(textureType, texture, supportsMips) {
+			if (supportsMips) {
+				_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_S, wrappingToGL[texture.wrapS]);
 
-				type = gl.SHORT;
+				_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_T, wrappingToGL[texture.wrapT]);
 
-			} else if ( array instanceof Uint32Array ) {
+				if (textureType === _gl.TEXTURE_3D || textureType === _gl.TEXTURE_2D_ARRAY) {
+					_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_R, wrappingToGL[texture.wrapR]);
+				}
 
-				type = gl.UNSIGNED_INT;
+				_gl.texParameteri(textureType, _gl.TEXTURE_MAG_FILTER, filterToGL[texture.magFilter]);
 
-			} else if ( array instanceof Int32Array ) {
+				_gl.texParameteri(textureType, _gl.TEXTURE_MIN_FILTER, filterToGL[texture.minFilter]);
+			} else {
+				_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_S, _gl.CLAMP_TO_EDGE);
 
-				type = gl.INT;
+				_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_T, _gl.CLAMP_TO_EDGE);
 
-			} else if ( array instanceof Int8Array ) {
+				if (textureType === _gl.TEXTURE_3D || textureType === _gl.TEXTURE_2D_ARRAY) {
+					_gl.texParameteri(textureType, _gl.TEXTURE_WRAP_R, _gl.CLAMP_TO_EDGE);
+				}
 
-				type = gl.BYTE;
+				if (texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping) {
+					console.warn('THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.');
+				}
 
-			} else if ( array instanceof Uint8Array ) {
+				_gl.texParameteri(textureType, _gl.TEXTURE_MAG_FILTER, filterFallback(texture.magFilter));
 
-				type = gl.UNSIGNED_BYTE;
+				_gl.texParameteri(textureType, _gl.TEXTURE_MIN_FILTER, filterFallback(texture.minFilter));
 
+				if (texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter) {
+					console.warn('THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.');
+				}
 			}
 
-			return {
-				buffer: buffer,
-				type: type,
-				bytesPerElement: array.BYTES_PER_ELEMENT,
-				version: attribute.version
-			};
+			if (extensions.has('EXT_texture_filter_anisotropic') === true) {
+				const extension = extensions.get('EXT_texture_filter_anisotropic');
+				if (texture.type === FloatType && extensions.has('OES_texture_float_linear') === false) return; // verify extension for WebGL 1 and WebGL 2
+
+				if (isWebGL2 === false && texture.type === HalfFloatType && extensions.has('OES_texture_half_float_linear') === false) return; // verify extension for WebGL 1 only
 
+				if (texture.anisotropy > 1 || properties.get(texture).__currentAnisotropy) {
+					_gl.texParameterf(textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min(texture.anisotropy, capabilities.getMaxAnisotropy()));
+
+					properties.get(texture).__currentAnisotropy = texture.anisotropy;
+				}
+			}
 		}
 
-		function updateBuffer( buffer, attribute, bufferType ) {
+		function initTexture(textureProperties, texture) {
+			if (textureProperties.__webglInit === undefined) {
+				textureProperties.__webglInit = true;
+				texture.addEventListener('dispose', onTextureDispose);
+				textureProperties.__webglTexture = _gl.createTexture();
+				info.memory.textures++;
+			}
+		}
 
-			var array = attribute.array;
-			var updateRange = attribute.updateRange;
+		function uploadTexture(textureProperties, texture, slot) {
+			let textureType = _gl.TEXTURE_2D;
+			if (texture.isDataTexture2DArray) textureType = _gl.TEXTURE_2D_ARRAY;
+			if (texture.isDataTexture3D) textureType = _gl.TEXTURE_3D;
+			initTexture(textureProperties, texture);
+			state.activeTexture(_gl.TEXTURE0 + slot);
+			state.bindTexture(textureType, textureProperties.__webglTexture);
 
-			gl.bindBuffer( bufferType, buffer );
+			_gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, texture.flipY);
 
-			if ( attribute.dynamic === false ) {
+			_gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha);
 
-				gl.bufferData( bufferType, array, gl.STATIC_DRAW );
+			_gl.pixelStorei(_gl.UNPACK_ALIGNMENT, texture.unpackAlignment);
 
-			} else if ( updateRange.count === - 1 ) {
+			_gl.pixelStorei(_gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, _gl.NONE);
 
-				// Not using update ranges
+			const needsPowerOfTwo = textureNeedsPowerOfTwo(texture) && isPowerOfTwo$1(texture.image) === false;
+			const image = resizeImage(texture.image, needsPowerOfTwo, false, maxTextureSize);
+			const supportsMips = isPowerOfTwo$1(image) || isWebGL2,
+						glFormat = utils.convert(texture.format);
+			let glType = utils.convert(texture.type),
+					glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType);
+			setTextureParameters(textureType, texture, supportsMips);
+			let mipmap;
+			const mipmaps = texture.mipmaps;
 
-				gl.bufferSubData( bufferType, 0, array );
+			if (texture.isDepthTexture) {
+				// populate depth texture with dummy data
+				glInternalFormat = _gl.DEPTH_COMPONENT;
+
+				if (isWebGL2) {
+					if (texture.type === FloatType) {
+						glInternalFormat = _gl.DEPTH_COMPONENT32F;
+					} else if (texture.type === UnsignedIntType) {
+						glInternalFormat = _gl.DEPTH_COMPONENT24;
+					} else if (texture.type === UnsignedInt248Type) {
+						glInternalFormat = _gl.DEPTH24_STENCIL8;
+					} else {
+						glInternalFormat = _gl.DEPTH_COMPONENT16; // WebGL2 requires sized internalformat for glTexImage2D
+					}
+				} else {
+					if (texture.type === FloatType) {
+						console.error('WebGLRenderer: Floating point depth texture requires WebGL2.');
+					}
+				} // validation checks for WebGL 1
 
-			} else if ( updateRange.count === 0 ) {
 
-				console.error( 'THREE.WebGLObjects.updateBuffer: dynamic THREE.BufferAttribute marked as needsUpdate but updateRange.count is 0, ensure you are using set methods or updating manually.' );
+				if (texture.format === DepthFormat && glInternalFormat === _gl.DEPTH_COMPONENT) {
+					// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
+					// DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT
+					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
+					if (texture.type !== UnsignedShortType && texture.type !== UnsignedIntType) {
+						console.warn('THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.');
+						texture.type = UnsignedShortType;
+						glType = utils.convert(texture.type);
+					}
+				}
 
-			} else {
+				if (texture.format === DepthStencilFormat && glInternalFormat === _gl.DEPTH_COMPONENT) {
+					// Depth stencil textures need the DEPTH_STENCIL internal format
+					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
+					glInternalFormat = _gl.DEPTH_STENCIL; // The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
+					// DEPTH_STENCIL and type is not UNSIGNED_INT_24_8_WEBGL.
+					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
 
-				gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
-					array.subarray( updateRange.offset, updateRange.offset + updateRange.count ) );
+					if (texture.type !== UnsignedInt248Type) {
+						console.warn('THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.');
+						texture.type = UnsignedInt248Type;
+						glType = utils.convert(texture.type);
+					}
+				} //
 
-				updateRange.count = - 1; // reset range
 
-			}
+				state.texImage2D(_gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null);
+			} else if (texture.isDataTexture) {
+				// use manually created mipmaps if available
+				// if there are no manual mipmaps
+				// set 0 level mipmap and then use GL to generate other mipmap levels
+				if (mipmaps.length > 0 && supportsMips) {
+					for (let i = 0, il = mipmaps.length; i < il; i++) {
+						mipmap = mipmaps[i];
+						state.texImage2D(_gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
+					}
 
-		}
+					texture.generateMipmaps = false;
+					textureProperties.__maxMipLevel = mipmaps.length - 1;
+				} else {
+					state.texImage2D(_gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data);
+					textureProperties.__maxMipLevel = 0;
+				}
+			} else if (texture.isCompressedTexture) {
+				for (let i = 0, il = mipmaps.length; i < il; i++) {
+					mipmap = mipmaps[i];
 
-		//
+					if (texture.format !== RGBAFormat && texture.format !== RGBFormat) {
+						if (glFormat !== null) {
+							state.compressedTexImage2D(_gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data);
+						} else {
+							console.warn('THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()');
+						}
+					} else {
+						state.texImage2D(_gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
+					}
+				}
 
-		function get( attribute ) {
+				textureProperties.__maxMipLevel = mipmaps.length - 1;
+			} else if (texture.isDataTexture2DArray) {
+				state.texImage3D(_gl.TEXTURE_2D_ARRAY, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data);
+				textureProperties.__maxMipLevel = 0;
+			} else if (texture.isDataTexture3D) {
+				state.texImage3D(_gl.TEXTURE_3D, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data);
+				textureProperties.__maxMipLevel = 0;
+			} else {
+				// regular Texture (image, video, canvas)
+				// use manually created mipmaps if available
+				// if there are no manual mipmaps
+				// set 0 level mipmap and then use GL to generate other mipmap levels
+				if (mipmaps.length > 0 && supportsMips) {
+					for (let i = 0, il = mipmaps.length; i < il; i++) {
+						mipmap = mipmaps[i];
+						state.texImage2D(_gl.TEXTURE_2D, i, glInternalFormat, glFormat, glType, mipmap);
+					}
 
-			if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
+					texture.generateMipmaps = false;
+					textureProperties.__maxMipLevel = mipmaps.length - 1;
+				} else {
+					state.texImage2D(_gl.TEXTURE_2D, 0, glInternalFormat, glFormat, glType, image);
+					textureProperties.__maxMipLevel = 0;
+				}
+			}
 
-			return buffers.get( attribute );
+			if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
+				generateMipmap(textureType, texture, image.width, image.height);
+			}
 
+			textureProperties.__version = texture.version;
+			if (texture.onUpdate) texture.onUpdate(texture);
 		}
 
-		function remove( attribute ) {
+		function uploadCubeTexture(textureProperties, texture, slot) {
+			if (texture.image.length !== 6) return;
+			initTexture(textureProperties, texture);
+			state.activeTexture(_gl.TEXTURE0 + slot);
+			state.bindTexture(_gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture);
 
-			if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
+			_gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, texture.flipY);
 
-			var data = buffers.get( attribute );
+			_gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha);
 
-			if ( data ) {
+			_gl.pixelStorei(_gl.UNPACK_ALIGNMENT, texture.unpackAlignment);
 
-				gl.deleteBuffer( data.buffer );
+			_gl.pixelStorei(_gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, _gl.NONE);
 
-				buffers.delete( attribute );
+			const isCompressed = texture && (texture.isCompressedTexture || texture.image[0].isCompressedTexture);
+			const isDataTexture = texture.image[0] && texture.image[0].isDataTexture;
+			const cubeImage = [];
 
+			for (let i = 0; i < 6; i++) {
+				if (!isCompressed && !isDataTexture) {
+					cubeImage[i] = resizeImage(texture.image[i], false, true, maxCubemapSize);
+				} else {
+					cubeImage[i] = isDataTexture ? texture.image[i].image : texture.image[i];
+				}
 			}
 
-		}
-
-		function update( attribute, bufferType ) {
+			const image = cubeImage[0],
+						supportsMips = isPowerOfTwo$1(image) || isWebGL2,
+						glFormat = utils.convert(texture.format),
+						glType = utils.convert(texture.type),
+						glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType);
+			setTextureParameters(_gl.TEXTURE_CUBE_MAP, texture, supportsMips);
+			let mipmaps;
 
-			if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
+			if (isCompressed) {
+				for (let i = 0; i < 6; i++) {
+					mipmaps = cubeImage[i].mipmaps;
 
-			var data = buffers.get( attribute );
+					for (let j = 0; j < mipmaps.length; j++) {
+						const mipmap = mipmaps[j];
 
-			if ( data === undefined ) {
+						if (texture.format !== RGBAFormat && texture.format !== RGBFormat) {
+							if (glFormat !== null) {
+								state.compressedTexImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data);
+							} else {
+								console.warn('THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()');
+							}
+						} else {
+							state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
+						}
+					}
+				}
 
-				buffers.set( attribute, createBuffer( attribute, bufferType ) );
+				textureProperties.__maxMipLevel = mipmaps.length - 1;
+			} else {
+				mipmaps = texture.mipmaps;
 
-			} else if ( data.version < attribute.version ) {
+				for (let i = 0; i < 6; i++) {
+					if (isDataTexture) {
+						state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, cubeImage[i].width, cubeImage[i].height, 0, glFormat, glType, cubeImage[i].data);
 
-				updateBuffer( data.buffer, attribute, bufferType );
+						for (let j = 0; j < mipmaps.length; j++) {
+							const mipmap = mipmaps[j];
+							const mipmapImage = mipmap.image[i].image;
+							state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data);
+						}
+					} else {
+						state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, glFormat, glType, cubeImage[i]);
 
-				data.version = attribute.version;
+						for (let j = 0; j < mipmaps.length; j++) {
+							const mipmap = mipmaps[j];
+							state.texImage2D(_gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[i]);
+						}
+					}
+				}
 
+				textureProperties.__maxMipLevel = mipmaps.length;
 			}
 
-		}
-
-		return {
+			if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
+				// We assume images for cube map have the same size.
+				generateMipmap(_gl.TEXTURE_CUBE_MAP, texture, image.width, image.height);
+			}
 
-			get: get,
-			remove: remove,
-			update: update
+			textureProperties.__version = texture.version;
+			if (texture.onUpdate) texture.onUpdate(texture);
+		} // Render targets
+		// Setup storage for target texture and bind it to correct framebuffer
 
-		};
 
-	}
+		function setupFrameBufferTexture(framebuffer, renderTarget, texture, attachment, textureTarget) {
+			const glFormat = utils.convert(texture.format);
+			const glType = utils.convert(texture.type);
+			const glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType);
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 * @author bhouston / http://clara.io
-	 */
+			if (textureTarget === _gl.TEXTURE_3D || textureTarget === _gl.TEXTURE_2D_ARRAY) {
+				state.texImage3D(textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, renderTarget.depth, 0, glFormat, glType, null);
+			} else {
+				state.texImage2D(textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null);
+			}
 
-	function Euler( x, y, z, order ) {
+			state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);
 
-		this._x = x || 0;
-		this._y = y || 0;
-		this._z = z || 0;
-		this._order = order || Euler.DefaultOrder;
+			_gl.framebufferTexture2D(_gl.FRAMEBUFFER, attachment, textureTarget, properties.get(texture).__webglTexture, 0);
 
-	}
+			state.bindFramebuffer(_gl.FRAMEBUFFER, null);
+		} // Setup storage for internal depth/stencil buffers and bind to correct framebuffer
 
-	Euler.RotationOrders = [ 'XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX' ];
 
-	Euler.DefaultOrder = 'XYZ';
+		function setupRenderBufferStorage(renderbuffer, renderTarget, isMultisample) {
+			_gl.bindRenderbuffer(_gl.RENDERBUFFER, renderbuffer);
 
-	Object.defineProperties( Euler.prototype, {
+			if (renderTarget.depthBuffer && !renderTarget.stencilBuffer) {
+				let glInternalFormat = _gl.DEPTH_COMPONENT16;
 
-		x: {
+				if (isMultisample) {
+					const depthTexture = renderTarget.depthTexture;
 
-			get: function () {
+					if (depthTexture && depthTexture.isDepthTexture) {
+						if (depthTexture.type === FloatType) {
+							glInternalFormat = _gl.DEPTH_COMPONENT32F;
+						} else if (depthTexture.type === UnsignedIntType) {
+							glInternalFormat = _gl.DEPTH_COMPONENT24;
+						}
+					}
 
-				return this._x;
+					const samples = getRenderTargetSamples(renderTarget);
 
-			},
+					_gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);
+				} else {
+					_gl.renderbufferStorage(_gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height);
+				}
 
-			set: function ( value ) {
+				_gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer);
+			} else if (renderTarget.depthBuffer && renderTarget.stencilBuffer) {
+				if (isMultisample) {
+					const samples = getRenderTargetSamples(renderTarget);
 
-				this._x = value;
-				this.onChangeCallback();
+					_gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, _gl.DEPTH24_STENCIL8, renderTarget.width, renderTarget.height);
+				} else {
+					_gl.renderbufferStorage(_gl.RENDERBUFFER, _gl.DEPTH_STENCIL, renderTarget.width, renderTarget.height);
+				}
 
-			}
+				_gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer);
+			} else {
+				// Use the first texture for MRT so far
+				const texture = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture[0] : renderTarget.texture;
+				const glFormat = utils.convert(texture.format);
+				const glType = utils.convert(texture.type);
+				const glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType);
 
-		},
+				if (isMultisample) {
+					const samples = getRenderTargetSamples(renderTarget);
 
-		y: {
+					_gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);
+				} else {
+					_gl.renderbufferStorage(_gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height);
+				}
+			}
 
-			get: function () {
+			_gl.bindRenderbuffer(_gl.RENDERBUFFER, null);
+		} // Setup resources for a Depth Texture for a FBO (needs an extension)
 
-				return this._y;
 
-			},
+		function setupDepthTexture(framebuffer, renderTarget) {
+			const isCube = renderTarget && renderTarget.isWebGLCubeRenderTarget;
+			if (isCube) throw new Error('Depth Texture with cube render targets is not supported');
+			state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);
 
-			set: function ( value ) {
+			if (!(renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture)) {
+				throw new Error('renderTarget.depthTexture must be an instance of THREE.DepthTexture');
+			} // upload an empty depth texture with framebuffer size
 
-				this._y = value;
-				this.onChangeCallback();
 
+			if (!properties.get(renderTarget.depthTexture).__webglTexture || renderTarget.depthTexture.image.width !== renderTarget.width || renderTarget.depthTexture.image.height !== renderTarget.height) {
+				renderTarget.depthTexture.image.width = renderTarget.width;
+				renderTarget.depthTexture.image.height = renderTarget.height;
+				renderTarget.depthTexture.needsUpdate = true;
 			}
 
-		},
-
-		z: {
+			setTexture2D(renderTarget.depthTexture, 0);
 
-			get: function () {
+			const webglDepthTexture = properties.get(renderTarget.depthTexture).__webglTexture;
 
-				return this._z;
+			if (renderTarget.depthTexture.format === DepthFormat) {
+				_gl.framebufferTexture2D(_gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0);
+			} else if (renderTarget.depthTexture.format === DepthStencilFormat) {
+				_gl.framebufferTexture2D(_gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0);
+			} else {
+				throw new Error('Unknown depthTexture format');
+			}
+		} // Setup GL resources for a non-texture depth buffer
 
-			},
 
-			set: function ( value ) {
+		function setupDepthRenderbuffer(renderTarget) {
+			const renderTargetProperties = properties.get(renderTarget);
+			const isCube = renderTarget.isWebGLCubeRenderTarget === true;
 
-				this._z = value;
-				this.onChangeCallback();
+			if (renderTarget.depthTexture) {
+				if (isCube) throw new Error('target.depthTexture not supported in Cube render targets');
+				setupDepthTexture(renderTargetProperties.__webglFramebuffer, renderTarget);
+			} else {
+				if (isCube) {
+					renderTargetProperties.__webglDepthbuffer = [];
 
+					for (let i = 0; i < 6; i++) {
+						state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer[i]);
+						renderTargetProperties.__webglDepthbuffer[i] = _gl.createRenderbuffer();
+						setupRenderBufferStorage(renderTargetProperties.__webglDepthbuffer[i], renderTarget, false);
+					}
+				} else {
+					state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer);
+					renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
+					setupRenderBufferStorage(renderTargetProperties.__webglDepthbuffer, renderTarget, false);
+				}
 			}
 
-		},
+			state.bindFramebuffer(_gl.FRAMEBUFFER, null);
+		} // Set up GL resources for the render target
 
-		order: {
 
-			get: function () {
+		function setupRenderTarget(renderTarget) {
+			const texture = renderTarget.texture;
+			const renderTargetProperties = properties.get(renderTarget);
+			const textureProperties = properties.get(texture);
+			renderTarget.addEventListener('dispose', onRenderTargetDispose);
 
-				return this._order;
+			if (renderTarget.isWebGLMultipleRenderTargets !== true) {
+				textureProperties.__webglTexture = _gl.createTexture();
+				textureProperties.__version = texture.version;
+				info.memory.textures++;
+			}
 
-			},
+			const isCube = renderTarget.isWebGLCubeRenderTarget === true;
+			const isMultipleRenderTargets = renderTarget.isWebGLMultipleRenderTargets === true;
+			const isMultisample = renderTarget.isWebGLMultisampleRenderTarget === true;
+			const isRenderTarget3D = texture.isDataTexture3D || texture.isDataTexture2DArray;
+			const supportsMips = isPowerOfTwo$1(renderTarget) || isWebGL2; // Handles WebGL2 RGBFormat fallback - #18858
 
-			set: function ( value ) {
+			if (isWebGL2 && texture.format === RGBFormat && (texture.type === FloatType || texture.type === HalfFloatType)) {
+				texture.format = RGBAFormat;
+				console.warn('THREE.WebGLRenderer: Rendering to textures with RGB format is not supported. Using RGBA format instead.');
+			} // Setup framebuffer
 
-				this._order = value;
-				this.onChangeCallback();
 
-			}
+			if (isCube) {
+				renderTargetProperties.__webglFramebuffer = [];
 
-		}
+				for (let i = 0; i < 6; i++) {
+					renderTargetProperties.__webglFramebuffer[i] = _gl.createFramebuffer();
+				}
+			} else {
+				renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();
 
-	} );
+				if (isMultipleRenderTargets) {
+					if (capabilities.drawBuffers) {
+						const textures = renderTarget.texture;
 
-	Object.assign( Euler.prototype, {
+						for (let i = 0, il = textures.length; i < il; i++) {
+							const attachmentProperties = properties.get(textures[i]);
 
-		isEuler: true,
+							if (attachmentProperties.__webglTexture === undefined) {
+								attachmentProperties.__webglTexture = _gl.createTexture();
+								info.memory.textures++;
+							}
+						}
+					} else {
+						console.warn('THREE.WebGLRenderer: WebGLMultipleRenderTargets can only be used with WebGL2 or WEBGL_draw_buffers extension.');
+					}
+				} else if (isMultisample) {
+					if (isWebGL2) {
+						renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();
+						renderTargetProperties.__webglColorRenderbuffer = _gl.createRenderbuffer();
 
-		set: function ( x, y, z, order ) {
+						_gl.bindRenderbuffer(_gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer);
 
-			this._x = x;
-			this._y = y;
-			this._z = z;
-			this._order = order || this._order;
+						const glFormat = utils.convert(texture.format);
+						const glType = utils.convert(texture.type);
+						const glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType);
+						const samples = getRenderTargetSamples(renderTarget);
 
-			this.onChangeCallback();
+						_gl.renderbufferStorageMultisample(_gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height);
 
-			return this;
+						state.bindFramebuffer(_gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
 
-		},
+						_gl.framebufferRenderbuffer(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer);
 
-		clone: function () {
+						_gl.bindRenderbuffer(_gl.RENDERBUFFER, null);
 
-			return new this.constructor( this._x, this._y, this._z, this._order );
+						if (renderTarget.depthBuffer) {
+							renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();
+							setupRenderBufferStorage(renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true);
+						}
 
-		},
+						state.bindFramebuffer(_gl.FRAMEBUFFER, null);
+					} else {
+						console.warn('THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.');
+					}
+				}
+			} // Setup color buffer
 
-		copy: function ( euler ) {
 
-			this._x = euler._x;
-			this._y = euler._y;
-			this._z = euler._z;
-			this._order = euler._order;
+			if (isCube) {
+				state.bindTexture(_gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture);
+				setTextureParameters(_gl.TEXTURE_CUBE_MAP, texture, supportsMips);
 
-			this.onChangeCallback();
+				for (let i = 0; i < 6; i++) {
+					setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer[i], renderTarget, texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i);
+				}
 
-			return this;
+				if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
+					generateMipmap(_gl.TEXTURE_CUBE_MAP, texture, renderTarget.width, renderTarget.height);
+				}
 
-		},
+				state.bindTexture(_gl.TEXTURE_CUBE_MAP, null);
+			} else if (isMultipleRenderTargets) {
+				const textures = renderTarget.texture;
 
-		setFromRotationMatrix: function ( m, order, update ) {
+				for (let i = 0, il = textures.length; i < il; i++) {
+					const attachment = textures[i];
+					const attachmentProperties = properties.get(attachment);
+					state.bindTexture(_gl.TEXTURE_2D, attachmentProperties.__webglTexture);
+					setTextureParameters(_gl.TEXTURE_2D, attachment, supportsMips);
+					setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer, renderTarget, attachment, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D);
 
-			var clamp = _Math.clamp;
+					if (textureNeedsGenerateMipmaps(attachment, supportsMips)) {
+						generateMipmap(_gl.TEXTURE_2D, attachment, renderTarget.width, renderTarget.height);
+					}
+				}
 
-			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+				state.bindTexture(_gl.TEXTURE_2D, null);
+			} else {
+				let glTextureType = _gl.TEXTURE_2D;
 
-			var te = m.elements;
-			var m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];
-			var m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];
-			var m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
+				if (isRenderTarget3D) {
+					// Render targets containing layers, i.e: Texture 3D and 2d arrays
+					if (isWebGL2) {
+						const isTexture3D = texture.isDataTexture3D;
+						glTextureType = isTexture3D ? _gl.TEXTURE_3D : _gl.TEXTURE_2D_ARRAY;
+					} else {
+						console.warn('THREE.DataTexture3D and THREE.DataTexture2DArray only supported with WebGL2.');
+					}
+				}
 
-			order = order || this._order;
+				state.bindTexture(glTextureType, textureProperties.__webglTexture);
+				setTextureParameters(glTextureType, texture, supportsMips);
+				setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer, renderTarget, texture, _gl.COLOR_ATTACHMENT0, glTextureType);
 
-			if ( order === 'XYZ' ) {
+				if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
+					generateMipmap(glTextureType, texture, renderTarget.width, renderTarget.height, renderTarget.depth);
+				}
 
-				this._y = Math.asin( clamp( m13, - 1, 1 ) );
+				state.bindTexture(glTextureType, null);
+			} // Setup depth and stencil buffers
 
-				if ( Math.abs( m13 ) < 0.99999 ) {
 
-					this._x = Math.atan2( - m23, m33 );
-					this._z = Math.atan2( - m12, m11 );
+			if (renderTarget.depthBuffer) {
+				setupDepthRenderbuffer(renderTarget);
+			}
+		}
 
-				} else {
+		function updateRenderTargetMipmap(renderTarget) {
+			const supportsMips = isPowerOfTwo$1(renderTarget) || isWebGL2;
+			const textures = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture : [renderTarget.texture];
 
-					this._x = Math.atan2( m32, m22 );
-					this._z = 0;
+			for (let i = 0, il = textures.length; i < il; i++) {
+				const texture = textures[i];
 
-				}
+				if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
+					const target = renderTarget.isWebGLCubeRenderTarget ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;
 
-			} else if ( order === 'YXZ' ) {
+					const webglTexture = properties.get(texture).__webglTexture;
 
-				this._x = Math.asin( - clamp( m23, - 1, 1 ) );
+					state.bindTexture(target, webglTexture);
+					generateMipmap(target, texture, renderTarget.width, renderTarget.height);
+					state.bindTexture(target, null);
+				}
+			}
+		}
 
-				if ( Math.abs( m23 ) < 0.99999 ) {
+		function updateMultisampleRenderTarget(renderTarget) {
+			if (renderTarget.isWebGLMultisampleRenderTarget) {
+				if (isWebGL2) {
+					const width = renderTarget.width;
+					const height = renderTarget.height;
+					let mask = _gl.COLOR_BUFFER_BIT;
+					if (renderTarget.depthBuffer) mask |= _gl.DEPTH_BUFFER_BIT;
+					if (renderTarget.stencilBuffer) mask |= _gl.STENCIL_BUFFER_BIT;
+					const renderTargetProperties = properties.get(renderTarget);
+					state.bindFramebuffer(_gl.READ_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
+					state.bindFramebuffer(_gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglFramebuffer);
 
-					this._y = Math.atan2( m13, m33 );
-					this._z = Math.atan2( m21, m22 );
+					_gl.blitFramebuffer(0, 0, width, height, 0, 0, width, height, mask, _gl.NEAREST);
 
+					state.bindFramebuffer(_gl.READ_FRAMEBUFFER, null);
+					state.bindFramebuffer(_gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer);
 				} else {
-
-					this._y = Math.atan2( - m31, m11 );
-					this._z = 0;
-
+					console.warn('THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.');
 				}
+			}
+		}
 
-			} else if ( order === 'ZXY' ) {
+		function getRenderTargetSamples(renderTarget) {
+			return isWebGL2 && renderTarget.isWebGLMultisampleRenderTarget ? Math.min(maxSamples, renderTarget.samples) : 0;
+		}
 
-				this._x = Math.asin( clamp( m32, - 1, 1 ) );
+		function updateVideoTexture(texture) {
+			const frame = info.render.frame; // Check the last frame we updated the VideoTexture
 
-				if ( Math.abs( m32 ) < 0.99999 ) {
+			if (_videoTextures.get(texture) !== frame) {
+				_videoTextures.set(texture, frame);
 
-					this._y = Math.atan2( - m31, m33 );
-					this._z = Math.atan2( - m12, m22 );
+				texture.update();
+			}
+		} // backwards compatibility
 
-				} else {
 
-					this._y = 0;
-					this._z = Math.atan2( m21, m11 );
+		let warnedTexture2D = false;
+		let warnedTextureCube = false;
 
+		function safeSetTexture2D(texture, slot) {
+			if (texture && texture.isWebGLRenderTarget) {
+				if (warnedTexture2D === false) {
+					console.warn('THREE.WebGLTextures.safeSetTexture2D: don\'t use render targets as textures. Use their .texture property instead.');
+					warnedTexture2D = true;
 				}
 
-			} else if ( order === 'ZYX' ) {
+				texture = texture.texture;
+			}
 
-				this._y = Math.asin( - clamp( m31, - 1, 1 ) );
+			setTexture2D(texture, slot);
+		}
 
-				if ( Math.abs( m31 ) < 0.99999 ) {
+		function safeSetTextureCube(texture, slot) {
+			if (texture && texture.isWebGLCubeRenderTarget) {
+				if (warnedTextureCube === false) {
+					console.warn('THREE.WebGLTextures.safeSetTextureCube: don\'t use cube render targets as textures. Use their .texture property instead.');
+					warnedTextureCube = true;
+				}
 
-					this._x = Math.atan2( m32, m33 );
-					this._z = Math.atan2( m21, m11 );
+				texture = texture.texture;
+			}
 
-				} else {
+			setTextureCube(texture, slot);
+		} //
 
-					this._x = 0;
-					this._z = Math.atan2( - m12, m22 );
 
+		this.allocateTextureUnit = allocateTextureUnit;
+		this.resetTextureUnits = resetTextureUnits;
+		this.setTexture2D = setTexture2D;
+		this.setTexture2DArray = setTexture2DArray;
+		this.setTexture3D = setTexture3D;
+		this.setTextureCube = setTextureCube;
+		this.setupRenderTarget = setupRenderTarget;
+		this.updateRenderTargetMipmap = updateRenderTargetMipmap;
+		this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
+		this.safeSetTexture2D = safeSetTexture2D;
+		this.safeSetTextureCube = safeSetTextureCube;
+	}
+
+	function WebGLUtils(gl, extensions, capabilities) {
+		const isWebGL2 = capabilities.isWebGL2;
+
+		function convert(p) {
+			let extension;
+			if (p === UnsignedByteType) return gl.UNSIGNED_BYTE;
+			if (p === UnsignedShort4444Type) return gl.UNSIGNED_SHORT_4_4_4_4;
+			if (p === UnsignedShort5551Type) return gl.UNSIGNED_SHORT_5_5_5_1;
+			if (p === UnsignedShort565Type) return gl.UNSIGNED_SHORT_5_6_5;
+			if (p === ByteType) return gl.BYTE;
+			if (p === ShortType) return gl.SHORT;
+			if (p === UnsignedShortType) return gl.UNSIGNED_SHORT;
+			if (p === IntType) return gl.INT;
+			if (p === UnsignedIntType) return gl.UNSIGNED_INT;
+			if (p === FloatType) return gl.FLOAT;
+
+			if (p === HalfFloatType) {
+				if (isWebGL2) return gl.HALF_FLOAT;
+				extension = extensions.get('OES_texture_half_float');
+
+				if (extension !== null) {
+					return extension.HALF_FLOAT_OES;
+				} else {
+					return null;
 				}
+			}
 
-			} else if ( order === 'YZX' ) {
-
-				this._z = Math.asin( clamp( m21, - 1, 1 ) );
+			if (p === AlphaFormat) return gl.ALPHA;
+			if (p === RGBFormat) return gl.RGB;
+			if (p === RGBAFormat) return gl.RGBA;
+			if (p === LuminanceFormat) return gl.LUMINANCE;
+			if (p === LuminanceAlphaFormat) return gl.LUMINANCE_ALPHA;
+			if (p === DepthFormat) return gl.DEPTH_COMPONENT;
+			if (p === DepthStencilFormat) return gl.DEPTH_STENCIL;
+			if (p === RedFormat) return gl.RED; // WebGL2 formats.
 
-				if ( Math.abs( m21 ) < 0.99999 ) {
+			if (p === RedIntegerFormat) return gl.RED_INTEGER;
+			if (p === RGFormat) return gl.RG;
+			if (p === RGIntegerFormat) return gl.RG_INTEGER;
+			if (p === RGBIntegerFormat) return gl.RGB_INTEGER;
+			if (p === RGBAIntegerFormat) return gl.RGBA_INTEGER;
 
-					this._x = Math.atan2( - m23, m22 );
-					this._y = Math.atan2( - m31, m11 );
+			if (p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format) {
+				extension = extensions.get('WEBGL_compressed_texture_s3tc');
 
+				if (extension !== null) {
+					if (p === RGB_S3TC_DXT1_Format) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
+					if (p === RGBA_S3TC_DXT1_Format) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
+					if (p === RGBA_S3TC_DXT3_Format) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
+					if (p === RGBA_S3TC_DXT5_Format) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;
 				} else {
-
-					this._x = 0;
-					this._y = Math.atan2( m13, m33 );
-
+					return null;
 				}
+			}
 
-			} else if ( order === 'XZY' ) {
-
-				this._z = Math.asin( - clamp( m12, - 1, 1 ) );
+			if (p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format) {
+				extension = extensions.get('WEBGL_compressed_texture_pvrtc');
 
-				if ( Math.abs( m12 ) < 0.99999 ) {
+				if (extension !== null) {
+					if (p === RGB_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
+					if (p === RGB_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
+					if (p === RGBA_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
+					if (p === RGBA_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
+				} else {
+					return null;
+				}
+			}
 
-					this._x = Math.atan2( m32, m22 );
-					this._y = Math.atan2( m13, m11 );
+			if (p === RGB_ETC1_Format) {
+				extension = extensions.get('WEBGL_compressed_texture_etc1');
 
+				if (extension !== null) {
+					return extension.COMPRESSED_RGB_ETC1_WEBGL;
 				} else {
+					return null;
+				}
+			}
 
-					this._x = Math.atan2( - m23, m33 );
-					this._y = 0;
+			if (p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format) {
+				extension = extensions.get('WEBGL_compressed_texture_etc');
 
+				if (extension !== null) {
+					if (p === RGB_ETC2_Format) return extension.COMPRESSED_RGB8_ETC2;
+					if (p === RGBA_ETC2_EAC_Format) return extension.COMPRESSED_RGBA8_ETC2_EAC;
 				}
+			}
 
-			} else {
+			if (p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format || p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format || p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format || p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format || p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format || p === SRGB8_ALPHA8_ASTC_4x4_Format || p === SRGB8_ALPHA8_ASTC_5x4_Format || p === SRGB8_ALPHA8_ASTC_5x5_Format || p === SRGB8_ALPHA8_ASTC_6x5_Format || p === SRGB8_ALPHA8_ASTC_6x6_Format || p === SRGB8_ALPHA8_ASTC_8x5_Format || p === SRGB8_ALPHA8_ASTC_8x6_Format || p === SRGB8_ALPHA8_ASTC_8x8_Format || p === SRGB8_ALPHA8_ASTC_10x5_Format || p === SRGB8_ALPHA8_ASTC_10x6_Format || p === SRGB8_ALPHA8_ASTC_10x8_Format || p === SRGB8_ALPHA8_ASTC_10x10_Format || p === SRGB8_ALPHA8_ASTC_12x10_Format || p === SRGB8_ALPHA8_ASTC_12x12_Format) {
+				extension = extensions.get('WEBGL_compressed_texture_astc');
+
+				if (extension !== null) {
+					// TODO Complete?
+					return p;
+				} else {
+					return null;
+				}
+			}
 
-				console.warn( 'THREE.Euler: .setFromRotationMatrix() given unsupported order: ' + order );
+			if (p === RGBA_BPTC_Format) {
+				extension = extensions.get('EXT_texture_compression_bptc');
 
+				if (extension !== null) {
+					// TODO Complete?
+					return p;
+				} else {
+					return null;
+				}
 			}
 
-			this._order = order;
+			if (p === UnsignedInt248Type) {
+				if (isWebGL2) return gl.UNSIGNED_INT_24_8;
+				extension = extensions.get('WEBGL_depth_texture');
 
-			if ( update !== false ) this.onChangeCallback();
+				if (extension !== null) {
+					return extension.UNSIGNED_INT_24_8_WEBGL;
+				} else {
+					return null;
+				}
+			}
+		}
 
-			return this;
+		return {
+			convert: convert
+		};
+	}
 
-		},
+	class ArrayCamera extends PerspectiveCamera {
+		constructor(array = []) {
+			super();
+			this.cameras = array;
+		}
 
-		setFromQuaternion: function () {
+	}
 
-			var matrix = new Matrix4();
+	ArrayCamera.prototype.isArrayCamera = true;
 
-			return function setFromQuaternion( q, order, update ) {
+	class Group extends Object3D {
+		constructor() {
+			super();
+			this.type = 'Group';
+		}
 
-				matrix.makeRotationFromQuaternion( q );
+	}
 
-				return this.setFromRotationMatrix( matrix, order, update );
+	Group.prototype.isGroup = true;
 
-			};
+	const _moveEvent = {
+		type: 'move'
+	};
 
-		}(),
+	class WebXRController {
+		constructor() {
+			this._targetRay = null;
+			this._grip = null;
+			this._hand = null;
+		}
+
+		getHandSpace() {
+			if (this._hand === null) {
+				this._hand = new Group();
+				this._hand.matrixAutoUpdate = false;
+				this._hand.visible = false;
+				this._hand.joints = {};
+				this._hand.inputState = {
+					pinching: false
+				};
+			}
 
-		setFromVector3: function ( v, order ) {
+			return this._hand;
+		}
 
-			return this.set( v.x, v.y, v.z, order || this._order );
+		getTargetRaySpace() {
+			if (this._targetRay === null) {
+				this._targetRay = new Group();
+				this._targetRay.matrixAutoUpdate = false;
+				this._targetRay.visible = false;
+				this._targetRay.hasLinearVelocity = false;
+				this._targetRay.linearVelocity = new Vector3();
+				this._targetRay.hasAngularVelocity = false;
+				this._targetRay.angularVelocity = new Vector3();
+			}
 
-		},
+			return this._targetRay;
+		}
 
-		reorder: function () {
+		getGripSpace() {
+			if (this._grip === null) {
+				this._grip = new Group();
+				this._grip.matrixAutoUpdate = false;
+				this._grip.visible = false;
+				this._grip.hasLinearVelocity = false;
+				this._grip.linearVelocity = new Vector3();
+				this._grip.hasAngularVelocity = false;
+				this._grip.angularVelocity = new Vector3();
+			}
 
-			// WARNING: this discards revolution information -bhouston
+			return this._grip;
+		}
 
-			var q = new Quaternion();
+		dispatchEvent(event) {
+			if (this._targetRay !== null) {
+				this._targetRay.dispatchEvent(event);
+			}
 
-			return function reorder( newOrder ) {
+			if (this._grip !== null) {
+				this._grip.dispatchEvent(event);
+			}
 
-				q.setFromEuler( this );
+			if (this._hand !== null) {
+				this._hand.dispatchEvent(event);
+			}
 
-				return this.setFromQuaternion( q, newOrder );
+			return this;
+		}
 
-			};
+		disconnect(inputSource) {
+			this.dispatchEvent({
+				type: 'disconnected',
+				data: inputSource
+			});
 
-		}(),
+			if (this._targetRay !== null) {
+				this._targetRay.visible = false;
+			}
 
-		equals: function ( euler ) {
+			if (this._grip !== null) {
+				this._grip.visible = false;
+			}
 
-			return ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );
+			if (this._hand !== null) {
+				this._hand.visible = false;
+			}
 
-		},
+			return this;
+		}
 
-		fromArray: function ( array ) {
+		update(inputSource, frame, referenceSpace) {
+			let inputPose = null;
+			let gripPose = null;
+			let handPose = null;
+			const targetRay = this._targetRay;
+			const grip = this._grip;
+			const hand = this._hand;
 
-			this._x = array[ 0 ];
-			this._y = array[ 1 ];
-			this._z = array[ 2 ];
-			if ( array[ 3 ] !== undefined ) this._order = array[ 3 ];
+			if (inputSource && frame.session.visibilityState !== 'visible-blurred') {
+				if (targetRay !== null) {
+					inputPose = frame.getPose(inputSource.targetRaySpace, referenceSpace);
 
-			this.onChangeCallback();
+					if (inputPose !== null) {
+						targetRay.matrix.fromArray(inputPose.transform.matrix);
+						targetRay.matrix.decompose(targetRay.position, targetRay.rotation, targetRay.scale);
 
-			return this;
+						if (inputPose.linearVelocity) {
+							targetRay.hasLinearVelocity = true;
+							targetRay.linearVelocity.copy(inputPose.linearVelocity);
+						} else {
+							targetRay.hasLinearVelocity = false;
+						}
 
-		},
+						if (inputPose.angularVelocity) {
+							targetRay.hasAngularVelocity = true;
+							targetRay.angularVelocity.copy(inputPose.angularVelocity);
+						} else {
+							targetRay.hasAngularVelocity = false;
+						}
 
-		toArray: function ( array, offset ) {
+						this.dispatchEvent(_moveEvent);
+					}
+				}
 
-			if ( array === undefined ) array = [];
-			if ( offset === undefined ) offset = 0;
+				if (hand && inputSource.hand) {
+					handPose = true;
 
-			array[ offset ] = this._x;
-			array[ offset + 1 ] = this._y;
-			array[ offset + 2 ] = this._z;
-			array[ offset + 3 ] = this._order;
+					for (const inputjoint of inputSource.hand.values()) {
+						// Update the joints groups with the XRJoint poses
+						const jointPose = frame.getJointPose(inputjoint, referenceSpace);
 
-			return array;
+						if (hand.joints[inputjoint.jointName] === undefined) {
+							// The transform of this joint will be updated with the joint pose on each frame
+							const joint = new Group();
+							joint.matrixAutoUpdate = false;
+							joint.visible = false;
+							hand.joints[inputjoint.jointName] = joint; // ??
 
-		},
+							hand.add(joint);
+						}
 
-		toVector3: function ( optionalResult ) {
+						const joint = hand.joints[inputjoint.jointName];
 
-			if ( optionalResult ) {
+						if (jointPose !== null) {
+							joint.matrix.fromArray(jointPose.transform.matrix);
+							joint.matrix.decompose(joint.position, joint.rotation, joint.scale);
+							joint.jointRadius = jointPose.radius;
+						}
 
-				return optionalResult.set( this._x, this._y, this._z );
+						joint.visible = jointPose !== null;
+					} // Custom events
+					// Check pinchz
+
+
+					const indexTip = hand.joints['index-finger-tip'];
+					const thumbTip = hand.joints['thumb-tip'];
+					const distance = indexTip.position.distanceTo(thumbTip.position);
+					const distanceToPinch = 0.02;
+					const threshold = 0.005;
+
+					if (hand.inputState.pinching && distance > distanceToPinch + threshold) {
+						hand.inputState.pinching = false;
+						this.dispatchEvent({
+							type: 'pinchend',
+							handedness: inputSource.handedness,
+							target: this
+						});
+					} else if (!hand.inputState.pinching && distance <= distanceToPinch - threshold) {
+						hand.inputState.pinching = true;
+						this.dispatchEvent({
+							type: 'pinchstart',
+							handedness: inputSource.handedness,
+							target: this
+						});
+					}
+				} else {
+					if (grip !== null && inputSource.gripSpace) {
+						gripPose = frame.getPose(inputSource.gripSpace, referenceSpace);
 
-			} else {
+						if (gripPose !== null) {
+							grip.matrix.fromArray(gripPose.transform.matrix);
+							grip.matrix.decompose(grip.position, grip.rotation, grip.scale);
 
-				return new Vector3( this._x, this._y, this._z );
+							if (gripPose.linearVelocity) {
+								grip.hasLinearVelocity = true;
+								grip.linearVelocity.copy(gripPose.linearVelocity);
+							} else {
+								grip.hasLinearVelocity = false;
+							}
 
+							if (gripPose.angularVelocity) {
+								grip.hasAngularVelocity = true;
+								grip.angularVelocity.copy(gripPose.angularVelocity);
+							} else {
+								grip.hasAngularVelocity = false;
+							}
+						}
+					}
+				}
 			}
 
-		},
+			if (targetRay !== null) {
+				targetRay.visible = inputPose !== null;
+			}
 
-		onChange: function ( callback ) {
+			if (grip !== null) {
+				grip.visible = gripPose !== null;
+			}
 
-			this.onChangeCallback = callback;
+			if (hand !== null) {
+				hand.visible = handPose !== null;
+			}
 
 			return this;
+		}
 
-		},
+	}
 
-		onChangeCallback: function () {}
+	class WebXRManager extends EventDispatcher {
+		constructor(renderer, gl) {
+			super();
+			const scope = this;
+			const state = renderer.state;
+			let session = null;
+			let framebufferScaleFactor = 1.0;
+			let referenceSpace = null;
+			let referenceSpaceType = 'local-floor';
+			let pose = null;
+			let glBinding = null;
+			let glFramebuffer = null;
+			let glProjLayer = null;
+			const controllers = [];
+			const inputSourcesMap = new Map(); //
 
-	} );
+			const cameraL = new PerspectiveCamera();
+			cameraL.layers.enable(1);
+			cameraL.viewport = new Vector4();
+			const cameraR = new PerspectiveCamera();
+			cameraR.layers.enable(2);
+			cameraR.viewport = new Vector4();
+			const cameras = [cameraL, cameraR];
+			const cameraVR = new ArrayCamera();
+			cameraVR.layers.enable(1);
+			cameraVR.layers.enable(2);
+			let _currentDepthNear = null;
+			let _currentDepthFar = null; //
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+			this.cameraAutoUpdate = true;
+			this.enabled = false;
+			this.isPresenting = false;
 
-	function Layers() {
+			this.getController = function (index) {
+				let controller = controllers[index];
 
-		this.mask = 1 | 0;
+				if (controller === undefined) {
+					controller = new WebXRController();
+					controllers[index] = controller;
+				}
 
-	}
+				return controller.getTargetRaySpace();
+			};
 
-	Object.assign( Layers.prototype, {
+			this.getControllerGrip = function (index) {
+				let controller = controllers[index];
 
-		set: function ( channel ) {
+				if (controller === undefined) {
+					controller = new WebXRController();
+					controllers[index] = controller;
+				}
 
-			this.mask = 1 << channel | 0;
+				return controller.getGripSpace();
+			};
 
-		},
+			this.getHand = function (index) {
+				let controller = controllers[index];
 
-		enable: function ( channel ) {
+				if (controller === undefined) {
+					controller = new WebXRController();
+					controllers[index] = controller;
+				}
 
-			this.mask |= 1 << channel | 0;
+				return controller.getHandSpace();
+			}; //
 
-		},
 
-		toggle: function ( channel ) {
+			function onSessionEvent(event) {
+				const controller = inputSourcesMap.get(event.inputSource);
 
-			this.mask ^= 1 << channel | 0;
+				if (controller) {
+					controller.dispatchEvent({
+						type: event.type,
+						data: event.inputSource
+					});
+				}
+			}
 
-		},
+			function onSessionEnd() {
+				inputSourcesMap.forEach(function (controller, inputSource) {
+					controller.disconnect(inputSource);
+				});
+				inputSourcesMap.clear();
+				_currentDepthNear = null;
+				_currentDepthFar = null; // restore framebuffer/rendering state
 
-		disable: function ( channel ) {
+				state.bindXRFramebuffer(null);
+				renderer.setRenderTarget(renderer.getRenderTarget()); //
 
-			this.mask &= ~ ( 1 << channel | 0 );
+				animation.stop();
+				scope.isPresenting = false;
+				scope.dispatchEvent({
+					type: 'sessionend'
+				});
+			}
 
-		},
+			this.setFramebufferScaleFactor = function (value) {
+				framebufferScaleFactor = value;
 
-		test: function ( layers ) {
+				if (scope.isPresenting === true) {
+					console.warn('THREE.WebXRManager: Cannot change framebuffer scale while presenting.');
+				}
+			};
 
-			return ( this.mask & layers.mask ) !== 0;
+			this.setReferenceSpaceType = function (value) {
+				referenceSpaceType = value;
 
-		}
+				if (scope.isPresenting === true) {
+					console.warn('THREE.WebXRManager: Cannot change reference space type while presenting.');
+				}
+			};
 
-	} );
+			this.getReferenceSpace = function () {
+				return referenceSpace;
+			};
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 * @author elephantatwork / www.elephantatwork.ch
-	 */
+			this.getSession = function () {
+				return session;
+			};
 
-	var object3DId = 0;
+			this.setSession = async function (value) {
+				session = value;
+
+				if (session !== null) {
+					session.addEventListener('select', onSessionEvent);
+					session.addEventListener('selectstart', onSessionEvent);
+					session.addEventListener('selectend', onSessionEvent);
+					session.addEventListener('squeeze', onSessionEvent);
+					session.addEventListener('squeezestart', onSessionEvent);
+					session.addEventListener('squeezeend', onSessionEvent);
+					session.addEventListener('end', onSessionEnd);
+					session.addEventListener('inputsourceschange', onInputSourcesChange);
+					const attributes = gl.getContextAttributes();
+
+					if (attributes.xrCompatible !== true) {
+						await gl.makeXRCompatible();
+					}
 
-	function Object3D() {
+					if (session.renderState.layers === undefined) {
+						const layerInit = {
+							antialias: attributes.antialias,
+							alpha: attributes.alpha,
+							depth: attributes.depth,
+							stencil: attributes.stencil,
+							framebufferScaleFactor: framebufferScaleFactor
+						}; // eslint-disable-next-line no-undef
+
+						const baseLayer = new XRWebGLLayer(session, gl, layerInit);
+						session.updateRenderState({
+							baseLayer: baseLayer
+						});
+					} else {
+						let depthFormat = 0;
 
-		Object.defineProperty( this, 'id', { value: object3DId ++ } );
+						if (attributes.depth) {
+							depthFormat = attributes.stencil ? gl.DEPTH_STENCIL : gl.DEPTH_COMPONENT;
+						}
 
-		this.uuid = _Math.generateUUID();
+						const projectionlayerInit = {
+							colorFormat: attributes.alpha ? gl.RGBA : gl.RGB,
+							depthFormat: depthFormat,
+							scaleFactor: framebufferScaleFactor
+						}; // eslint-disable-next-line no-undef
+
+						glBinding = new XRWebGLBinding(session, gl);
+						glProjLayer = glBinding.createProjectionLayer(projectionlayerInit);
+						glFramebuffer = gl.createFramebuffer();
+						session.updateRenderState({
+							layers: [glProjLayer]
+						});
+					}
 
-		this.name = '';
-		this.type = 'Object3D';
+					referenceSpace = await session.requestReferenceSpace(referenceSpaceType);
+					animation.setContext(session);
+					animation.start();
+					scope.isPresenting = true;
+					scope.dispatchEvent({
+						type: 'sessionstart'
+					});
+				}
+			};
 
-		this.parent = null;
-		this.children = [];
+			function onInputSourcesChange(event) {
+				const inputSources = session.inputSources; // Assign inputSources to available controllers
 
-		this.up = Object3D.DefaultUp.clone();
+				for (let i = 0; i < controllers.length; i++) {
+					inputSourcesMap.set(inputSources[i], controllers[i]);
+				} // Notify disconnected
 
-		var position = new Vector3();
-		var rotation = new Euler();
-		var quaternion = new Quaternion();
-		var scale = new Vector3( 1, 1, 1 );
 
-		function onRotationChange() {
+				for (let i = 0; i < event.removed.length; i++) {
+					const inputSource = event.removed[i];
+					const controller = inputSourcesMap.get(inputSource);
 
-			quaternion.setFromEuler( rotation, false );
+					if (controller) {
+						controller.dispatchEvent({
+							type: 'disconnected',
+							data: inputSource
+						});
+						inputSourcesMap.delete(inputSource);
+					}
+				} // Notify connected
 
-		}
 
-		function onQuaternionChange() {
+				for (let i = 0; i < event.added.length; i++) {
+					const inputSource = event.added[i];
+					const controller = inputSourcesMap.get(inputSource);
 
-			rotation.setFromQuaternion( quaternion, undefined, false );
+					if (controller) {
+						controller.dispatchEvent({
+							type: 'connected',
+							data: inputSource
+						});
+					}
+				}
+			} //
 
-		}
 
-		rotation.onChange( onRotationChange );
-		quaternion.onChange( onQuaternionChange );
+			const cameraLPos = new Vector3();
+			const cameraRPos = new Vector3();
+			/**
+			 * Assumes 2 cameras that are parallel and share an X-axis, and that
+			 * the cameras' projection and world matrices have already been set.
+			 * And that near and far planes are identical for both cameras.
+			 * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765
+			 */
 
-		Object.defineProperties( this, {
-			position: {
-				enumerable: true,
-				value: position
-			},
-			rotation: {
-				enumerable: true,
-				value: rotation
-			},
-			quaternion: {
-				enumerable: true,
-				value: quaternion
-			},
-			scale: {
-				enumerable: true,
-				value: scale
-			},
-			modelViewMatrix: {
-				value: new Matrix4()
-			},
-			normalMatrix: {
-				value: new Matrix3()
+			function setProjectionFromUnion(camera, cameraL, cameraR) {
+				cameraLPos.setFromMatrixPosition(cameraL.matrixWorld);
+				cameraRPos.setFromMatrixPosition(cameraR.matrixWorld);
+				const ipd = cameraLPos.distanceTo(cameraRPos);
+				const projL = cameraL.projectionMatrix.elements;
+				const projR = cameraR.projectionMatrix.elements; // VR systems will have identical far and near planes, and
+				// most likely identical top and bottom frustum extents.
+				// Use the left camera for these values.
+
+				const near = projL[14] / (projL[10] - 1);
+				const far = projL[14] / (projL[10] + 1);
+				const topFov = (projL[9] + 1) / projL[5];
+				const bottomFov = (projL[9] - 1) / projL[5];
+				const leftFov = (projL[8] - 1) / projL[0];
+				const rightFov = (projR[8] + 1) / projR[0];
+				const left = near * leftFov;
+				const right = near * rightFov; // Calculate the new camera's position offset from the
+				// left camera. xOffset should be roughly half `ipd`.
+
+				const zOffset = ipd / (-leftFov + rightFov);
+				const xOffset = zOffset * -leftFov; // TODO: Better way to apply this offset?
+
+				cameraL.matrixWorld.decompose(camera.position, camera.quaternion, camera.scale);
+				camera.translateX(xOffset);
+				camera.translateZ(zOffset);
+				camera.matrixWorld.compose(camera.position, camera.quaternion, camera.scale);
+				camera.matrixWorldInverse.copy(camera.matrixWorld).invert(); // Find the union of the frustum values of the cameras and scale
+				// the values so that the near plane's position does not change in world space,
+				// although must now be relative to the new union camera.
+
+				const near2 = near + zOffset;
+				const far2 = far + zOffset;
+				const left2 = left - xOffset;
+				const right2 = right + (ipd - xOffset);
+				const top2 = topFov * far / far2 * near2;
+				const bottom2 = bottomFov * far / far2 * near2;
+				camera.projectionMatrix.makePerspective(left2, right2, top2, bottom2, near2, far2);
+			}
+
+			function updateCamera(camera, parent) {
+				if (parent === null) {
+					camera.matrixWorld.copy(camera.matrix);
+				} else {
+					camera.matrixWorld.multiplyMatrices(parent.matrixWorld, camera.matrix);
+				}
+
+				camera.matrixWorldInverse.copy(camera.matrixWorld).invert();
 			}
-		} );
 
-		this.matrix = new Matrix4();
-		this.matrixWorld = new Matrix4();
+			this.updateCamera = function (camera) {
+				if (session === null) return;
+				cameraVR.near = cameraR.near = cameraL.near = camera.near;
+				cameraVR.far = cameraR.far = cameraL.far = camera.far;
 
-		this.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;
-		this.matrixWorldNeedsUpdate = false;
+				if (_currentDepthNear !== cameraVR.near || _currentDepthFar !== cameraVR.far) {
+					// Note that the new renderState won't apply until the next frame. See #18320
+					session.updateRenderState({
+						depthNear: cameraVR.near,
+						depthFar: cameraVR.far
+					});
+					_currentDepthNear = cameraVR.near;
+					_currentDepthFar = cameraVR.far;
+				}
 
-		this.layers = new Layers();
-		this.visible = true;
+				const parent = camera.parent;
+				const cameras = cameraVR.cameras;
+				updateCamera(cameraVR, parent);
 
-		this.castShadow = false;
-		this.receiveShadow = false;
+				for (let i = 0; i < cameras.length; i++) {
+					updateCamera(cameras[i], parent);
+				}
 
-		this.frustumCulled = true;
-		this.renderOrder = 0;
+				cameraVR.matrixWorld.decompose(cameraVR.position, cameraVR.quaternion, cameraVR.scale); // update user camera and its children
 
-		this.userData = {};
+				camera.position.copy(cameraVR.position);
+				camera.quaternion.copy(cameraVR.quaternion);
+				camera.scale.copy(cameraVR.scale);
+				camera.matrix.copy(cameraVR.matrix);
+				camera.matrixWorld.copy(cameraVR.matrixWorld);
+				const children = camera.children;
 
-	}
+				for (let i = 0, l = children.length; i < l; i++) {
+					children[i].updateMatrixWorld(true);
+				} // update projection matrix for proper view frustum culling
 
-	Object3D.DefaultUp = new Vector3( 0, 1, 0 );
-	Object3D.DefaultMatrixAutoUpdate = true;
 
-	Object3D.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+				if (cameras.length === 2) {
+					setProjectionFromUnion(cameraVR, cameraL, cameraR);
+				} else {
+					// assume single camera setup (AR)
+					cameraVR.projectionMatrix.copy(cameraL.projectionMatrix);
+				}
+			};
 
-		constructor: Object3D,
+			this.getCamera = function () {
+				return cameraVR;
+			}; // Animation Loop
 
-		isObject3D: true,
 
-		onBeforeRender: function () {},
-		onAfterRender: function () {},
+			let onAnimationFrameCallback = null;
 
-		applyMatrix: function ( matrix ) {
+			function onAnimationFrame(time, frame) {
+				pose = frame.getViewerPose(referenceSpace);
 
-			this.matrix.multiplyMatrices( matrix, this.matrix );
+				if (pose !== null) {
+					const views = pose.views;
+					const baseLayer = session.renderState.baseLayer;
 
-			this.matrix.decompose( this.position, this.quaternion, this.scale );
+					if (session.renderState.layers === undefined) {
+						state.bindXRFramebuffer(baseLayer.framebuffer);
+					}
 
-		},
+					let cameraVRNeedsUpdate = false; // check if it's necessary to rebuild cameraVR's camera list
 
-		applyQuaternion: function ( q ) {
+					if (views.length !== cameraVR.cameras.length) {
+						cameraVR.cameras.length = 0;
+						cameraVRNeedsUpdate = true;
+					}
 
-			this.quaternion.premultiply( q );
+					for (let i = 0; i < views.length; i++) {
+						const view = views[i];
+						let viewport = null;
 
-			return this;
+						if (session.renderState.layers === undefined) {
+							viewport = baseLayer.getViewport(view);
+						} else {
+							const glSubImage = glBinding.getViewSubImage(glProjLayer, view);
+							state.bindXRFramebuffer(glFramebuffer);
+							gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, glSubImage.colorTexture, 0);
 
-		},
+							if (glSubImage.depthStencilTexture !== undefined) {
+								gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.TEXTURE_2D, glSubImage.depthStencilTexture, 0);
+							}
 
-		setRotationFromAxisAngle: function ( axis, angle ) {
+							viewport = glSubImage.viewport;
+						}
 
-			// assumes axis is normalized
+						const camera = cameras[i];
+						camera.matrix.fromArray(view.transform.matrix);
+						camera.projectionMatrix.fromArray(view.projectionMatrix);
+						camera.viewport.set(viewport.x, viewport.y, viewport.width, viewport.height);
 
-			this.quaternion.setFromAxisAngle( axis, angle );
+						if (i === 0) {
+							cameraVR.matrix.copy(camera.matrix);
+						}
 
-		},
+						if (cameraVRNeedsUpdate === true) {
+							cameraVR.cameras.push(camera);
+						}
+					}
+				} //
 
-		setRotationFromEuler: function ( euler ) {
 
-			this.quaternion.setFromEuler( euler, true );
+				const inputSources = session.inputSources;
 
-		},
+				for (let i = 0; i < controllers.length; i++) {
+					const controller = controllers[i];
+					const inputSource = inputSources[i];
+					controller.update(inputSource, frame, referenceSpace);
+				}
 
-		setRotationFromMatrix: function ( m ) {
+				if (onAnimationFrameCallback) onAnimationFrameCallback(time, frame);
+			}
 
-			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+			const animation = new WebGLAnimation();
+			animation.setAnimationLoop(onAnimationFrame);
 
-			this.quaternion.setFromRotationMatrix( m );
+			this.setAnimationLoop = function (callback) {
+				onAnimationFrameCallback = callback;
+			};
 
-		},
+			this.dispose = function () {};
+		}
 
-		setRotationFromQuaternion: function ( q ) {
+	}
 
-			// assumes q is normalized
+	function WebGLMaterials(properties) {
+		function refreshFogUniforms(uniforms, fog) {
+			uniforms.fogColor.value.copy(fog.color);
 
-			this.quaternion.copy( q );
+			if (fog.isFog) {
+				uniforms.fogNear.value = fog.near;
+				uniforms.fogFar.value = fog.far;
+			} else if (fog.isFogExp2) {
+				uniforms.fogDensity.value = fog.density;
+			}
+		}
 
-		},
+		function refreshMaterialUniforms(uniforms, material, pixelRatio, height, transmissionRenderTarget) {
+			if (material.isMeshBasicMaterial) {
+				refreshUniformsCommon(uniforms, material);
+			} else if (material.isMeshLambertMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsLambert(uniforms, material);
+			} else if (material.isMeshToonMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsToon(uniforms, material);
+			} else if (material.isMeshPhongMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsPhong(uniforms, material);
+			} else if (material.isMeshStandardMaterial) {
+				refreshUniformsCommon(uniforms, material);
+
+				if (material.isMeshPhysicalMaterial) {
+					refreshUniformsPhysical(uniforms, material, transmissionRenderTarget);
+				} else {
+					refreshUniformsStandard(uniforms, material);
+				}
+			} else if (material.isMeshMatcapMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsMatcap(uniforms, material);
+			} else if (material.isMeshDepthMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsDepth(uniforms, material);
+			} else if (material.isMeshDistanceMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsDistance(uniforms, material);
+			} else if (material.isMeshNormalMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsNormal(uniforms, material);
+			} else if (material.isLineBasicMaterial) {
+				refreshUniformsLine(uniforms, material);
+
+				if (material.isLineDashedMaterial) {
+					refreshUniformsDash(uniforms, material);
+				}
+			} else if (material.isPointsMaterial) {
+				refreshUniformsPoints(uniforms, material, pixelRatio, height);
+			} else if (material.isSpriteMaterial) {
+				refreshUniformsSprites(uniforms, material);
+			} else if (material.isShadowMaterial) {
+				uniforms.color.value.copy(material.color);
+				uniforms.opacity.value = material.opacity;
+			} else if (material.isShaderMaterial) {
+				material.uniformsNeedUpdate = false; // #15581
+			}
+		}
+
+		function refreshUniformsCommon(uniforms, material) {
+			uniforms.opacity.value = material.opacity;
 
-		rotateOnAxis: function () {
+			if (material.color) {
+				uniforms.diffuse.value.copy(material.color);
+			}
 
-			// rotate object on axis in object space
-			// axis is assumed to be normalized
+			if (material.emissive) {
+				uniforms.emissive.value.copy(material.emissive).multiplyScalar(material.emissiveIntensity);
+			}
 
-			var q1 = new Quaternion();
+			if (material.map) {
+				uniforms.map.value = material.map;
+			}
 
-			return function rotateOnAxis( axis, angle ) {
+			if (material.alphaMap) {
+				uniforms.alphaMap.value = material.alphaMap;
+			}
 
-				q1.setFromAxisAngle( axis, angle );
+			if (material.specularMap) {
+				uniforms.specularMap.value = material.specularMap;
+			}
 
-				this.quaternion.multiply( q1 );
+			const envMap = properties.get(material).envMap;
 
-				return this;
+			if (envMap) {
+				uniforms.envMap.value = envMap;
+				uniforms.flipEnvMap.value = envMap.isCubeTexture && envMap._needsFlipEnvMap ? -1 : 1;
+				uniforms.reflectivity.value = material.reflectivity;
+				uniforms.refractionRatio.value = material.refractionRatio;
 
-			};
+				const maxMipLevel = properties.get(envMap).__maxMipLevel;
 
-		}(),
+				if (maxMipLevel !== undefined) {
+					uniforms.maxMipLevel.value = maxMipLevel;
+				}
+			}
 
-		rotateOnWorldAxis: function () {
+			if (material.lightMap) {
+				uniforms.lightMap.value = material.lightMap;
+				uniforms.lightMapIntensity.value = material.lightMapIntensity;
+			}
 
-			// rotate object on axis in world space
-			// axis is assumed to be normalized
-			// method assumes no rotated parent
+			if (material.aoMap) {
+				uniforms.aoMap.value = material.aoMap;
+				uniforms.aoMapIntensity.value = material.aoMapIntensity;
+			} // uv repeat and offset setting priorities
+			// 1. color map
+			// 2. specular map
+			// 3. displacementMap map
+			// 4. normal map
+			// 5. bump map
+			// 6. roughnessMap map
+			// 7. metalnessMap map
+			// 8. alphaMap map
+			// 9. emissiveMap map
+			// 10. clearcoat map
+			// 11. clearcoat normal map
+			// 12. clearcoat roughnessMap map
 
-			var q1 = new Quaternion();
 
-			return function rotateOnWorldAxis( axis, angle ) {
+			let uvScaleMap;
 
-				q1.setFromAxisAngle( axis, angle );
+			if (material.map) {
+				uvScaleMap = material.map;
+			} else if (material.specularMap) {
+				uvScaleMap = material.specularMap;
+			} else if (material.displacementMap) {
+				uvScaleMap = material.displacementMap;
+			} else if (material.normalMap) {
+				uvScaleMap = material.normalMap;
+			} else if (material.bumpMap) {
+				uvScaleMap = material.bumpMap;
+			} else if (material.roughnessMap) {
+				uvScaleMap = material.roughnessMap;
+			} else if (material.metalnessMap) {
+				uvScaleMap = material.metalnessMap;
+			} else if (material.alphaMap) {
+				uvScaleMap = material.alphaMap;
+			} else if (material.emissiveMap) {
+				uvScaleMap = material.emissiveMap;
+			} else if (material.clearcoatMap) {
+				uvScaleMap = material.clearcoatMap;
+			} else if (material.clearcoatNormalMap) {
+				uvScaleMap = material.clearcoatNormalMap;
+			} else if (material.clearcoatRoughnessMap) {
+				uvScaleMap = material.clearcoatRoughnessMap;
+			}
 
-				this.quaternion.premultiply( q1 );
+			if (uvScaleMap !== undefined) {
+				// backwards compatibility
+				if (uvScaleMap.isWebGLRenderTarget) {
+					uvScaleMap = uvScaleMap.texture;
+				}
 
-				return this;
+				if (uvScaleMap.matrixAutoUpdate === true) {
+					uvScaleMap.updateMatrix();
+				}
 
-			};
+				uniforms.uvTransform.value.copy(uvScaleMap.matrix);
+			} // uv repeat and offset setting priorities for uv2
+			// 1. ao map
+			// 2. light map
 
-		}(),
 
-		rotateX: function () {
+			let uv2ScaleMap;
 
-			var v1 = new Vector3( 1, 0, 0 );
+			if (material.aoMap) {
+				uv2ScaleMap = material.aoMap;
+			} else if (material.lightMap) {
+				uv2ScaleMap = material.lightMap;
+			}
 
-			return function rotateX( angle ) {
+			if (uv2ScaleMap !== undefined) {
+				// backwards compatibility
+				if (uv2ScaleMap.isWebGLRenderTarget) {
+					uv2ScaleMap = uv2ScaleMap.texture;
+				}
 
-				return this.rotateOnAxis( v1, angle );
+				if (uv2ScaleMap.matrixAutoUpdate === true) {
+					uv2ScaleMap.updateMatrix();
+				}
 
-			};
+				uniforms.uv2Transform.value.copy(uv2ScaleMap.matrix);
+			}
+		}
 
-		}(),
+		function refreshUniformsLine(uniforms, material) {
+			uniforms.diffuse.value.copy(material.color);
+			uniforms.opacity.value = material.opacity;
+		}
 
-		rotateY: function () {
+		function refreshUniformsDash(uniforms, material) {
+			uniforms.dashSize.value = material.dashSize;
+			uniforms.totalSize.value = material.dashSize + material.gapSize;
+			uniforms.scale.value = material.scale;
+		}
 
-			var v1 = new Vector3( 0, 1, 0 );
+		function refreshUniformsPoints(uniforms, material, pixelRatio, height) {
+			uniforms.diffuse.value.copy(material.color);
+			uniforms.opacity.value = material.opacity;
+			uniforms.size.value = material.size * pixelRatio;
+			uniforms.scale.value = height * 0.5;
 
-			return function rotateY( angle ) {
+			if (material.map) {
+				uniforms.map.value = material.map;
+			}
 
-				return this.rotateOnAxis( v1, angle );
+			if (material.alphaMap) {
+				uniforms.alphaMap.value = material.alphaMap;
+			} // uv repeat and offset setting priorities
+			// 1. color map
+			// 2. alpha map
 
-			};
 
-		}(),
+			let uvScaleMap;
 
-		rotateZ: function () {
+			if (material.map) {
+				uvScaleMap = material.map;
+			} else if (material.alphaMap) {
+				uvScaleMap = material.alphaMap;
+			}
 
-			var v1 = new Vector3( 0, 0, 1 );
+			if (uvScaleMap !== undefined) {
+				if (uvScaleMap.matrixAutoUpdate === true) {
+					uvScaleMap.updateMatrix();
+				}
 
-			return function rotateZ( angle ) {
+				uniforms.uvTransform.value.copy(uvScaleMap.matrix);
+			}
+		}
 
-				return this.rotateOnAxis( v1, angle );
+		function refreshUniformsSprites(uniforms, material) {
+			uniforms.diffuse.value.copy(material.color);
+			uniforms.opacity.value = material.opacity;
+			uniforms.rotation.value = material.rotation;
 
-			};
+			if (material.map) {
+				uniforms.map.value = material.map;
+			}
 
-		}(),
+			if (material.alphaMap) {
+				uniforms.alphaMap.value = material.alphaMap;
+			} // uv repeat and offset setting priorities
+			// 1. color map
+			// 2. alpha map
 
-		translateOnAxis: function () {
 
-			// translate object by distance along axis in object space
-			// axis is assumed to be normalized
+			let uvScaleMap;
 
-			var v1 = new Vector3();
+			if (material.map) {
+				uvScaleMap = material.map;
+			} else if (material.alphaMap) {
+				uvScaleMap = material.alphaMap;
+			}
 
-			return function translateOnAxis( axis, distance ) {
+			if (uvScaleMap !== undefined) {
+				if (uvScaleMap.matrixAutoUpdate === true) {
+					uvScaleMap.updateMatrix();
+				}
 
-				v1.copy( axis ).applyQuaternion( this.quaternion );
+				uniforms.uvTransform.value.copy(uvScaleMap.matrix);
+			}
+		}
 
-				this.position.add( v1.multiplyScalar( distance ) );
+		function refreshUniformsLambert(uniforms, material) {
+			if (material.emissiveMap) {
+				uniforms.emissiveMap.value = material.emissiveMap;
+			}
+		}
 
-				return this;
+		function refreshUniformsPhong(uniforms, material) {
+			uniforms.specular.value.copy(material.specular);
+			uniforms.shininess.value = Math.max(material.shininess, 1e-4); // to prevent pow( 0.0, 0.0 )
 
-			};
+			if (material.emissiveMap) {
+				uniforms.emissiveMap.value = material.emissiveMap;
+			}
 
-		}(),
+			if (material.bumpMap) {
+				uniforms.bumpMap.value = material.bumpMap;
+				uniforms.bumpScale.value = material.bumpScale;
+				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
+			}
 
-		translateX: function () {
+			if (material.normalMap) {
+				uniforms.normalMap.value = material.normalMap;
+				uniforms.normalScale.value.copy(material.normalScale);
+				if (material.side === BackSide) uniforms.normalScale.value.negate();
+			}
 
-			var v1 = new Vector3( 1, 0, 0 );
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+		}
 
-			return function translateX( distance ) {
+		function refreshUniformsToon(uniforms, material) {
+			if (material.gradientMap) {
+				uniforms.gradientMap.value = material.gradientMap;
+			}
 
-				return this.translateOnAxis( v1, distance );
+			if (material.emissiveMap) {
+				uniforms.emissiveMap.value = material.emissiveMap;
+			}
 
-			};
+			if (material.bumpMap) {
+				uniforms.bumpMap.value = material.bumpMap;
+				uniforms.bumpScale.value = material.bumpScale;
+				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
+			}
 
-		}(),
+			if (material.normalMap) {
+				uniforms.normalMap.value = material.normalMap;
+				uniforms.normalScale.value.copy(material.normalScale);
+				if (material.side === BackSide) uniforms.normalScale.value.negate();
+			}
 
-		translateY: function () {
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+		}
 
-			var v1 = new Vector3( 0, 1, 0 );
+		function refreshUniformsStandard(uniforms, material) {
+			uniforms.roughness.value = material.roughness;
+			uniforms.metalness.value = material.metalness;
 
-			return function translateY( distance ) {
+			if (material.roughnessMap) {
+				uniforms.roughnessMap.value = material.roughnessMap;
+			}
 
-				return this.translateOnAxis( v1, distance );
+			if (material.metalnessMap) {
+				uniforms.metalnessMap.value = material.metalnessMap;
+			}
 
-			};
+			if (material.emissiveMap) {
+				uniforms.emissiveMap.value = material.emissiveMap;
+			}
 
-		}(),
+			if (material.bumpMap) {
+				uniforms.bumpMap.value = material.bumpMap;
+				uniforms.bumpScale.value = material.bumpScale;
+				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
+			}
 
-		translateZ: function () {
+			if (material.normalMap) {
+				uniforms.normalMap.value = material.normalMap;
+				uniforms.normalScale.value.copy(material.normalScale);
+				if (material.side === BackSide) uniforms.normalScale.value.negate();
+			}
 
-			var v1 = new Vector3( 0, 0, 1 );
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
 
-			return function translateZ( distance ) {
+			const envMap = properties.get(material).envMap;
 
-				return this.translateOnAxis( v1, distance );
+			if (envMap) {
+				//uniforms.envMap.value = material.envMap; // part of uniforms common
+				uniforms.envMapIntensity.value = material.envMapIntensity;
+			}
+		}
 
-			};
+		function refreshUniformsPhysical(uniforms, material, transmissionRenderTarget) {
+			refreshUniformsStandard(uniforms, material);
+			uniforms.reflectivity.value = material.reflectivity; // also part of uniforms common
 
-		}(),
+			uniforms.clearcoat.value = material.clearcoat;
+			uniforms.clearcoatRoughness.value = material.clearcoatRoughness;
+			if (material.sheen) uniforms.sheen.value.copy(material.sheen);
 
-		localToWorld: function ( vector ) {
+			if (material.clearcoatMap) {
+				uniforms.clearcoatMap.value = material.clearcoatMap;
+			}
 
-			return vector.applyMatrix4( this.matrixWorld );
+			if (material.clearcoatRoughnessMap) {
+				uniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;
+			}
 
-		},
+			if (material.clearcoatNormalMap) {
+				uniforms.clearcoatNormalScale.value.copy(material.clearcoatNormalScale);
+				uniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;
 
-		worldToLocal: function () {
+				if (material.side === BackSide) {
+					uniforms.clearcoatNormalScale.value.negate();
+				}
+			}
 
-			var m1 = new Matrix4();
+			uniforms.transmission.value = material.transmission;
 
-			return function worldToLocal( vector ) {
+			if (material.transmissionMap) {
+				uniforms.transmissionMap.value = material.transmissionMap;
+			}
 
-				return vector.applyMatrix4( m1.getInverse( this.matrixWorld ) );
+			if (material.transmission > 0.0) {
+				uniforms.transmissionSamplerMap.value = transmissionRenderTarget.texture;
+				uniforms.transmissionSamplerSize.value.set(transmissionRenderTarget.width, transmissionRenderTarget.height);
+			}
 
-			};
+			uniforms.thickness.value = material.thickness;
 
-		}(),
+			if (material.thicknessMap) {
+				uniforms.thicknessMap.value = material.thicknessMap;
+			}
 
-		lookAt: function () {
+			uniforms.attenuationDistance.value = material.attenuationDistance;
+			uniforms.attenuationColor.value.copy(material.attenuationColor);
+		}
 
-			// This method does not support objects with rotated and/or translated parent(s)
+		function refreshUniformsMatcap(uniforms, material) {
+			if (material.matcap) {
+				uniforms.matcap.value = material.matcap;
+			}
 
-			var m1 = new Matrix4();
-			var vector = new Vector3();
+			if (material.bumpMap) {
+				uniforms.bumpMap.value = material.bumpMap;
+				uniforms.bumpScale.value = material.bumpScale;
+				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
+			}
 
-			return function lookAt( x, y, z ) {
+			if (material.normalMap) {
+				uniforms.normalMap.value = material.normalMap;
+				uniforms.normalScale.value.copy(material.normalScale);
+				if (material.side === BackSide) uniforms.normalScale.value.negate();
+			}
 
-				if ( x.isVector3 ) {
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+		}
 
-					vector.copy( x );
+		function refreshUniformsDepth(uniforms, material) {
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+		}
 
-				} else {
+		function refreshUniformsDistance(uniforms, material) {
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
 
-					vector.set( x, y, z );
+			uniforms.referencePosition.value.copy(material.referencePosition);
+			uniforms.nearDistance.value = material.nearDistance;
+			uniforms.farDistance.value = material.farDistance;
+		}
 
-				}
+		function refreshUniformsNormal(uniforms, material) {
+			if (material.bumpMap) {
+				uniforms.bumpMap.value = material.bumpMap;
+				uniforms.bumpScale.value = material.bumpScale;
+				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
+			}
 
-				if ( this.isCamera ) {
+			if (material.normalMap) {
+				uniforms.normalMap.value = material.normalMap;
+				uniforms.normalScale.value.copy(material.normalScale);
+				if (material.side === BackSide) uniforms.normalScale.value.negate();
+			}
 
-					m1.lookAt( this.position, vector, this.up );
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+		}
 
-				} else {
+		return {
+			refreshFogUniforms: refreshFogUniforms,
+			refreshMaterialUniforms: refreshMaterialUniforms
+		};
+	}
 
-					m1.lookAt( vector, this.position, this.up );
+	function createCanvasElement() {
+		const canvas = document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas');
+		canvas.style.display = 'block';
+		return canvas;
+	}
 
-				}
+	function WebGLRenderer(parameters = {}) {
+		const _canvas = parameters.canvas !== undefined ? parameters.canvas : createCanvasElement(),
+					_context = parameters.context !== undefined ? parameters.context : null,
+					_alpha = parameters.alpha !== undefined ? parameters.alpha : false,
+					_depth = parameters.depth !== undefined ? parameters.depth : true,
+					_stencil = parameters.stencil !== undefined ? parameters.stencil : true,
+					_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
+					_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
+					_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,
+					_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default',
+					_failIfMajorPerformanceCaveat = parameters.failIfMajorPerformanceCaveat !== undefined ? parameters.failIfMajorPerformanceCaveat : false;
 
-				this.quaternion.setFromRotationMatrix( m1 );
+		let currentRenderList = null;
+		let currentRenderState = null; // render() can be called from within a callback triggered by another render.
+		// We track this so that the nested render call gets its list and state isolated from the parent render call.
 
-			};
+		const renderListStack = [];
+		const renderStateStack = []; // public properties
 
-		}(),
+		this.domElement = _canvas; // Debug configuration container
 
-		add: function ( object ) {
+		this.debug = {
+			/**
+			 * Enables error checking and reporting when shader programs are being compiled
+			 * @type {boolean}
+			 */
+			checkShaderErrors: true
+		}; // clearing
 
-			if ( arguments.length > 1 ) {
+		this.autoClear = true;
+		this.autoClearColor = true;
+		this.autoClearDepth = true;
+		this.autoClearStencil = true; // scene graph
 
-				for ( var i = 0; i < arguments.length; i ++ ) {
+		this.sortObjects = true; // user-defined clipping
 
-					this.add( arguments[ i ] );
+		this.clippingPlanes = [];
+		this.localClippingEnabled = false; // physically based shading
 
-				}
+		this.gammaFactor = 2.0; // for backwards compatibility
 
-				return this;
+		this.outputEncoding = LinearEncoding; // physical lights
 
-			}
+		this.physicallyCorrectLights = false; // tone mapping
 
-			if ( object === this ) {
+		this.toneMapping = NoToneMapping;
+		this.toneMappingExposure = 1.0; // internal properties
 
-				console.error( "THREE.Object3D.add: object can't be added as a child of itself.", object );
-				return this;
+		const _this = this;
 
-			}
+		let _isContextLost = false; // internal state cache
 
-			if ( ( object && object.isObject3D ) ) {
+		let _currentActiveCubeFace = 0;
+		let _currentActiveMipmapLevel = 0;
+		let _currentRenderTarget = null;
 
-				if ( object.parent !== null ) {
+		let _currentMaterialId = -1;
 
-					object.parent.remove( object );
+		let _currentCamera = null;
 
-				}
+		const _currentViewport = new Vector4();
 
-				object.parent = this;
-				object.dispatchEvent( { type: 'added' } );
+		const _currentScissor = new Vector4();
 
-				this.children.push( object );
+		let _currentScissorTest = null; //
 
-			} else {
+		let _width = _canvas.width;
+		let _height = _canvas.height;
+		let _pixelRatio = 1;
+		let _opaqueSort = null;
+		let _transparentSort = null;
 
-				console.error( "THREE.Object3D.add: object not an instance of THREE.Object3D.", object );
+		const _viewport = new Vector4(0, 0, _width, _height);
 
-			}
+		const _scissor = new Vector4(0, 0, _width, _height);
 
-			return this;
+		let _scissorTest = false; //
 
-		},
+		const _currentDrawBuffers = []; // frustum
 
-		remove: function ( object ) {
+		const _frustum = new Frustum(); // clipping
 
-			if ( arguments.length > 1 ) {
 
-				for ( var i = 0; i < arguments.length; i ++ ) {
+		let _clippingEnabled = false;
+		let _localClippingEnabled = false; // transmission
 
-					this.remove( arguments[ i ] );
+		let _transmissionRenderTarget = null; // camera matrices cache
 
-				}
+		const _projScreenMatrix = new Matrix4();
 
-				return this;
+		const _vector3 = new Vector3();
 
-			}
+		const _emptyScene = {
+			background: null,
+			fog: null,
+			environment: null,
+			overrideMaterial: null,
+			isScene: true
+		};
 
-			var index = this.children.indexOf( object );
+		function getTargetPixelRatio() {
+			return _currentRenderTarget === null ? _pixelRatio : 1;
+		} // initialize
 
-			if ( index !== - 1 ) {
 
-				object.parent = null;
+		let _gl = _context;
 
-				object.dispatchEvent( { type: 'removed' } );
+		function getContext(contextNames, contextAttributes) {
+			for (let i = 0; i < contextNames.length; i++) {
+				const contextName = contextNames[i];
 
-				this.children.splice( index, 1 );
+				const context = _canvas.getContext(contextName, contextAttributes);
 
+				if (context !== null) return context;
 			}
 
-			return this;
+			return null;
+		}
 
-		},
+		try {
+			const contextAttributes = {
+				alpha: _alpha,
+				depth: _depth,
+				stencil: _stencil,
+				antialias: _antialias,
+				premultipliedAlpha: _premultipliedAlpha,
+				preserveDrawingBuffer: _preserveDrawingBuffer,
+				powerPreference: _powerPreference,
+				failIfMajorPerformanceCaveat: _failIfMajorPerformanceCaveat
+			}; // event listeners must be registered before WebGL context is created, see #12753
 
-		getObjectById: function ( id ) {
+			_canvas.addEventListener('webglcontextlost', onContextLost, false);
 
-			return this.getObjectByProperty( 'id', id );
+			_canvas.addEventListener('webglcontextrestored', onContextRestore, false);
 
-		},
+			if (_gl === null) {
+				const contextNames = ['webgl2', 'webgl', 'experimental-webgl'];
 
-		getObjectByName: function ( name ) {
+				if (_this.isWebGL1Renderer === true) {
+					contextNames.shift();
+				}
 
-			return this.getObjectByProperty( 'name', name );
+				_gl = getContext(contextNames, contextAttributes);
 
-		},
+				if (_gl === null) {
+					if (getContext(contextNames)) {
+						throw new Error('Error creating WebGL context with your selected attributes.');
+					} else {
+						throw new Error('Error creating WebGL context.');
+					}
+				}
+			} // Some experimental-webgl implementations do not have getShaderPrecisionFormat
 
-		getObjectByProperty: function ( name, value ) {
 
-			if ( this[ name ] === value ) return this;
+			if (_gl.getShaderPrecisionFormat === undefined) {
+				_gl.getShaderPrecisionFormat = function () {
+					return {
+						'rangeMin': 1,
+						'rangeMax': 1,
+						'precision': 1
+					};
+				};
+			}
+		} catch (error) {
+			console.error('THREE.WebGLRenderer: ' + error.message);
+			throw error;
+		}
 
-			for ( var i = 0, l = this.children.length; i < l; i ++ ) {
+		let extensions, capabilities, state, info;
+		let properties, textures, cubemaps, attributes, geometries, objects;
+		let programCache, materials, renderLists, renderStates, clipping, shadowMap;
+		let background, morphtargets, bufferRenderer, indexedBufferRenderer;
+		let utils, bindingStates;
 
-				var child = this.children[ i ];
-				var object = child.getObjectByProperty( name, value );
+		function initGLContext() {
+			extensions = new WebGLExtensions(_gl);
+			capabilities = new WebGLCapabilities(_gl, extensions, parameters);
+			extensions.init(capabilities);
+			utils = new WebGLUtils(_gl, extensions, capabilities);
+			state = new WebGLState(_gl, extensions, capabilities);
+			_currentDrawBuffers[0] = _gl.BACK;
+			info = new WebGLInfo(_gl);
+			properties = new WebGLProperties();
+			textures = new WebGLTextures(_gl, extensions, state, properties, capabilities, utils, info);
+			cubemaps = new WebGLCubeMaps(_this);
+			attributes = new WebGLAttributes(_gl, capabilities);
+			bindingStates = new WebGLBindingStates(_gl, extensions, attributes, capabilities);
+			geometries = new WebGLGeometries(_gl, attributes, info, bindingStates);
+			objects = new WebGLObjects(_gl, geometries, attributes, info);
+			morphtargets = new WebGLMorphtargets(_gl);
+			clipping = new WebGLClipping(properties);
+			programCache = new WebGLPrograms(_this, cubemaps, extensions, capabilities, bindingStates, clipping);
+			materials = new WebGLMaterials(properties);
+			renderLists = new WebGLRenderLists(properties);
+			renderStates = new WebGLRenderStates(extensions, capabilities);
+			background = new WebGLBackground(_this, cubemaps, state, objects, _premultipliedAlpha);
+			shadowMap = new WebGLShadowMap(_this, objects, capabilities);
+			bufferRenderer = new WebGLBufferRenderer(_gl, extensions, info, capabilities);
+			indexedBufferRenderer = new WebGLIndexedBufferRenderer(_gl, extensions, info, capabilities);
+			info.programs = programCache.programs;
+			_this.capabilities = capabilities;
+			_this.extensions = extensions;
+			_this.properties = properties;
+			_this.renderLists = renderLists;
+			_this.shadowMap = shadowMap;
+			_this.state = state;
+			_this.info = info;
+		}
 
-				if ( object !== undefined ) {
+		initGLContext(); // xr
 
-					return object;
+		const xr = new WebXRManager(_this, _gl);
+		this.xr = xr; // API
 
-				}
+		this.getContext = function () {
+			return _gl;
+		};
 
-			}
+		this.getContextAttributes = function () {
+			return _gl.getContextAttributes();
+		};
 
-			return undefined;
+		this.forceContextLoss = function () {
+			const extension = extensions.get('WEBGL_lose_context');
+			if (extension) extension.loseContext();
+		};
 
-		},
+		this.forceContextRestore = function () {
+			const extension = extensions.get('WEBGL_lose_context');
+			if (extension) extension.restoreContext();
+		};
 
-		getWorldPosition: function ( target ) {
+		this.getPixelRatio = function () {
+			return _pixelRatio;
+		};
 
-			if ( target === undefined ) {
+		this.setPixelRatio = function (value) {
+			if (value === undefined) return;
+			_pixelRatio = value;
+			this.setSize(_width, _height, false);
+		};
 
-				console.warn( 'THREE.Object3D: .getWorldPosition() target is now required' );
-				target = new Vector3();
+		this.getSize = function (target) {
+			return target.set(_width, _height);
+		};
 
+		this.setSize = function (width, height, updateStyle) {
+			if (xr.isPresenting) {
+				console.warn('THREE.WebGLRenderer: Can\'t change size while VR device is presenting.');
+				return;
 			}
 
-			this.updateMatrixWorld( true );
-
-			return target.setFromMatrixPosition( this.matrixWorld );
+			_width = width;
+			_height = height;
+			_canvas.width = Math.floor(width * _pixelRatio);
+			_canvas.height = Math.floor(height * _pixelRatio);
 
-		},
+			if (updateStyle !== false) {
+				_canvas.style.width = width + 'px';
+				_canvas.style.height = height + 'px';
+			}
 
-		getWorldQuaternion: function () {
+			this.setViewport(0, 0, width, height);
+		};
 
-			var position = new Vector3();
-			var scale = new Vector3();
+		this.getDrawingBufferSize = function (target) {
+			return target.set(_width * _pixelRatio, _height * _pixelRatio).floor();
+		};
 
-			return function getWorldQuaternion( target ) {
+		this.setDrawingBufferSize = function (width, height, pixelRatio) {
+			_width = width;
+			_height = height;
+			_pixelRatio = pixelRatio;
+			_canvas.width = Math.floor(width * pixelRatio);
+			_canvas.height = Math.floor(height * pixelRatio);
+			this.setViewport(0, 0, width, height);
+		};
 
-				if ( target === undefined ) {
+		this.getCurrentViewport = function (target) {
+			return target.copy(_currentViewport);
+		};
 
-					console.warn( 'THREE.Object3D: .getWorldQuaternion() target is now required' );
-					target = new Quaternion();
+		this.getViewport = function (target) {
+			return target.copy(_viewport);
+		};
 
-				}
+		this.setViewport = function (x, y, width, height) {
+			if (x.isVector4) {
+				_viewport.set(x.x, x.y, x.z, x.w);
+			} else {
+				_viewport.set(x, y, width, height);
+			}
 
-				this.updateMatrixWorld( true );
+			state.viewport(_currentViewport.copy(_viewport).multiplyScalar(_pixelRatio).floor());
+		};
 
-				this.matrixWorld.decompose( position, target, scale );
+		this.getScissor = function (target) {
+			return target.copy(_scissor);
+		};
 
-				return target;
+		this.setScissor = function (x, y, width, height) {
+			if (x.isVector4) {
+				_scissor.set(x.x, x.y, x.z, x.w);
+			} else {
+				_scissor.set(x, y, width, height);
+			}
 
-			};
+			state.scissor(_currentScissor.copy(_scissor).multiplyScalar(_pixelRatio).floor());
+		};
 
-		}(),
+		this.getScissorTest = function () {
+			return _scissorTest;
+		};
 
-		getWorldScale: function () {
+		this.setScissorTest = function (boolean) {
+			state.setScissorTest(_scissorTest = boolean);
+		};
 
-			var position = new Vector3();
-			var quaternion = new Quaternion();
+		this.setOpaqueSort = function (method) {
+			_opaqueSort = method;
+		};
 
-			return function getWorldScale( target ) {
+		this.setTransparentSort = function (method) {
+			_transparentSort = method;
+		}; // Clearing
 
-				if ( target === undefined ) {
 
-					console.warn( 'THREE.Object3D: .getWorldScale() target is now required' );
-					target = new Vector3();
+		this.getClearColor = function (target) {
+			return target.copy(background.getClearColor());
+		};
 
-				}
+		this.setClearColor = function () {
+			background.setClearColor.apply(background, arguments);
+		};
 
-				this.updateMatrixWorld( true );
+		this.getClearAlpha = function () {
+			return background.getClearAlpha();
+		};
 
-				this.matrixWorld.decompose( position, quaternion, target );
+		this.setClearAlpha = function () {
+			background.setClearAlpha.apply(background, arguments);
+		};
 
-				return target;
+		this.clear = function (color, depth, stencil) {
+			let bits = 0;
+			if (color === undefined || color) bits |= _gl.COLOR_BUFFER_BIT;
+			if (depth === undefined || depth) bits |= _gl.DEPTH_BUFFER_BIT;
+			if (stencil === undefined || stencil) bits |= _gl.STENCIL_BUFFER_BIT;
 
-			};
+			_gl.clear(bits);
+		};
 
-		}(),
+		this.clearColor = function () {
+			this.clear(true, false, false);
+		};
 
-		getWorldDirection: function () {
+		this.clearDepth = function () {
+			this.clear(false, true, false);
+		};
 
-			var quaternion = new Quaternion();
+		this.clearStencil = function () {
+			this.clear(false, false, true);
+		}; //
 
-			return function getWorldDirection( target ) {
 
-				if ( target === undefined ) {
+		this.dispose = function () {
+			_canvas.removeEventListener('webglcontextlost', onContextLost, false);
 
-					console.warn( 'THREE.Object3D: .getWorldDirection() target is now required' );
-					target = new Vector3();
+			_canvas.removeEventListener('webglcontextrestored', onContextRestore, false);
 
-				}
+			renderLists.dispose();
+			renderStates.dispose();
+			properties.dispose();
+			cubemaps.dispose();
+			objects.dispose();
+			bindingStates.dispose();
+			xr.dispose();
+			xr.removeEventListener('sessionstart', onXRSessionStart);
+			xr.removeEventListener('sessionend', onXRSessionEnd);
 
-				this.getWorldQuaternion( quaternion );
+			if (_transmissionRenderTarget) {
+				_transmissionRenderTarget.dispose();
 
-				return target.set( 0, 0, 1 ).applyQuaternion( quaternion );
+				_transmissionRenderTarget = null;
+			}
 
-			};
+			animation.stop();
+		}; // Events
 
-		}(),
 
-		raycast: function () {},
+		function onContextLost(event) {
+			event.preventDefault();
+			console.log('THREE.WebGLRenderer: Context Lost.');
+			_isContextLost = true;
+		}
 
-		traverse: function ( callback ) {
+		function onContextRestore()
+		/* event */
+		{
+			console.log('THREE.WebGLRenderer: Context Restored.');
+			_isContextLost = false;
+			const infoAutoReset = info.autoReset;
+			const shadowMapEnabled = shadowMap.enabled;
+			const shadowMapAutoUpdate = shadowMap.autoUpdate;
+			const shadowMapNeedsUpdate = shadowMap.needsUpdate;
+			const shadowMapType = shadowMap.type;
+			initGLContext();
+			info.autoReset = infoAutoReset;
+			shadowMap.enabled = shadowMapEnabled;
+			shadowMap.autoUpdate = shadowMapAutoUpdate;
+			shadowMap.needsUpdate = shadowMapNeedsUpdate;
+			shadowMap.type = shadowMapType;
+		}
 
-			callback( this );
+		function onMaterialDispose(event) {
+			const material = event.target;
+			material.removeEventListener('dispose', onMaterialDispose);
+			deallocateMaterial(material);
+		} // Buffer deallocation
 
-			var children = this.children;
 
-			for ( var i = 0, l = children.length; i < l; i ++ ) {
+		function deallocateMaterial(material) {
+			releaseMaterialProgramReferences(material);
+			properties.remove(material);
+		}
 
-				children[ i ].traverse( callback );
+		function releaseMaterialProgramReferences(material) {
+			const programs = properties.get(material).programs;
 
+			if (programs !== undefined) {
+				programs.forEach(function (program) {
+					programCache.releaseProgram(program);
+				});
 			}
+		} // Buffer rendering
 
-		},
-
-		traverseVisible: function ( callback ) {
 
-			if ( this.visible === false ) return;
+		function renderObjectImmediate(object, program) {
+			object.render(function (object) {
+				_this.renderBufferImmediate(object, program);
+			});
+		}
 
-			callback( this );
+		this.renderBufferImmediate = function (object, program) {
+			bindingStates.initAttributes();
+			const buffers = properties.get(object);
+			if (object.hasPositions && !buffers.position) buffers.position = _gl.createBuffer();
+			if (object.hasNormals && !buffers.normal) buffers.normal = _gl.createBuffer();
+			if (object.hasUvs && !buffers.uv) buffers.uv = _gl.createBuffer();
+			if (object.hasColors && !buffers.color) buffers.color = _gl.createBuffer();
+			const programAttributes = program.getAttributes();
 
-			var children = this.children;
+			if (object.hasPositions) {
+				_gl.bindBuffer(_gl.ARRAY_BUFFER, buffers.position);
 
-			for ( var i = 0, l = children.length; i < l; i ++ ) {
+				_gl.bufferData(_gl.ARRAY_BUFFER, object.positionArray, _gl.DYNAMIC_DRAW);
 
-				children[ i ].traverseVisible( callback );
+				bindingStates.enableAttribute(programAttributes.position);
 
+				_gl.vertexAttribPointer(programAttributes.position, 3, _gl.FLOAT, false, 0, 0);
 			}
 
-		},
+			if (object.hasNormals) {
+				_gl.bindBuffer(_gl.ARRAY_BUFFER, buffers.normal);
 
-		traverseAncestors: function ( callback ) {
+				_gl.bufferData(_gl.ARRAY_BUFFER, object.normalArray, _gl.DYNAMIC_DRAW);
 
-			var parent = this.parent;
+				bindingStates.enableAttribute(programAttributes.normal);
 
-			if ( parent !== null ) {
+				_gl.vertexAttribPointer(programAttributes.normal, 3, _gl.FLOAT, false, 0, 0);
+			}
 
-				callback( parent );
+			if (object.hasUvs) {
+				_gl.bindBuffer(_gl.ARRAY_BUFFER, buffers.uv);
 
-				parent.traverseAncestors( callback );
+				_gl.bufferData(_gl.ARRAY_BUFFER, object.uvArray, _gl.DYNAMIC_DRAW);
 
-			}
+				bindingStates.enableAttribute(programAttributes.uv);
 
-		},
+				_gl.vertexAttribPointer(programAttributes.uv, 2, _gl.FLOAT, false, 0, 0);
+			}
 
-		updateMatrix: function () {
+			if (object.hasColors) {
+				_gl.bindBuffer(_gl.ARRAY_BUFFER, buffers.color);
 
-			this.matrix.compose( this.position, this.quaternion, this.scale );
+				_gl.bufferData(_gl.ARRAY_BUFFER, object.colorArray, _gl.DYNAMIC_DRAW);
 
-			this.matrixWorldNeedsUpdate = true;
+				bindingStates.enableAttribute(programAttributes.color);
 
-		},
+				_gl.vertexAttribPointer(programAttributes.color, 3, _gl.FLOAT, false, 0, 0);
+			}
 
-		updateMatrixWorld: function ( force ) {
+			bindingStates.disableUnusedAttributes();
 
-			if ( this.matrixAutoUpdate ) this.updateMatrix();
+			_gl.drawArrays(_gl.TRIANGLES, 0, object.count);
 
-			if ( this.matrixWorldNeedsUpdate || force ) {
+			object.count = 0;
+		};
 
-				if ( this.parent === null ) {
+		this.renderBufferDirect = function (camera, scene, geometry, material, object, group) {
+			if (scene === null) scene = _emptyScene; // renderBufferDirect second parameter used to be fog (could be null)
 
-					this.matrixWorld.copy( this.matrix );
+			const frontFaceCW = object.isMesh && object.matrixWorld.determinant() < 0;
+			const program = setProgram(camera, scene, material, object);
+			state.setMaterial(material, frontFaceCW); //
 
-				} else {
+			let index = geometry.index;
+			const position = geometry.attributes.position; //
 
-					this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
+			if (index === null) {
+				if (position === undefined || position.count === 0) return;
+			} else if (index.count === 0) {
+				return;
+			} //
 
-				}
 
-				this.matrixWorldNeedsUpdate = false;
+			let rangeFactor = 1;
 
-				force = true;
+			if (material.wireframe === true) {
+				index = geometries.getWireframeAttribute(geometry);
+				rangeFactor = 2;
+			}
 
+			if (material.morphTargets || material.morphNormals) {
+				morphtargets.update(object, geometry, material, program);
 			}
 
-			// update children
+			bindingStates.setup(object, material, program, geometry, index);
+			let attribute;
+			let renderer = bufferRenderer;
 
-			var children = this.children;
+			if (index !== null) {
+				attribute = attributes.get(index);
+				renderer = indexedBufferRenderer;
+				renderer.setIndex(attribute);
+			} //
+
+
+			const dataCount = index !== null ? index.count : position.count;
+			const rangeStart = geometry.drawRange.start * rangeFactor;
+			const rangeCount = geometry.drawRange.count * rangeFactor;
+			const groupStart = group !== null ? group.start * rangeFactor : 0;
+			const groupCount = group !== null ? group.count * rangeFactor : Infinity;
+			const drawStart = Math.max(rangeStart, groupStart);
+			const drawEnd = Math.min(dataCount, rangeStart + rangeCount, groupStart + groupCount) - 1;
+			const drawCount = Math.max(0, drawEnd - drawStart + 1);
+			if (drawCount === 0) return; //
+
+			if (object.isMesh) {
+				if (material.wireframe === true) {
+					state.setLineWidth(material.wireframeLinewidth * getTargetPixelRatio());
+					renderer.setMode(_gl.LINES);
+				} else {
+					renderer.setMode(_gl.TRIANGLES);
+				}
+			} else if (object.isLine) {
+				let lineWidth = material.linewidth;
+				if (lineWidth === undefined) lineWidth = 1; // Not using Line*Material
 
-			for ( var i = 0, l = children.length; i < l; i ++ ) {
+				state.setLineWidth(lineWidth * getTargetPixelRatio());
 
-				children[ i ].updateMatrixWorld( force );
+				if (object.isLineSegments) {
+					renderer.setMode(_gl.LINES);
+				} else if (object.isLineLoop) {
+					renderer.setMode(_gl.LINE_LOOP);
+				} else {
+					renderer.setMode(_gl.LINE_STRIP);
+				}
+			} else if (object.isPoints) {
+				renderer.setMode(_gl.POINTS);
+			} else if (object.isSprite) {
+				renderer.setMode(_gl.TRIANGLES);
+			}
 
+			if (object.isInstancedMesh) {
+				renderer.renderInstances(drawStart, drawCount, object.count);
+			} else if (geometry.isInstancedBufferGeometry) {
+				const instanceCount = Math.min(geometry.instanceCount, geometry._maxInstanceCount);
+				renderer.renderInstances(drawStart, drawCount, instanceCount);
+			} else {
+				renderer.render(drawStart, drawCount);
 			}
+		}; // Compile
 
-		},
 
-		toJSON: function ( meta ) {
+		this.compile = function (scene, camera) {
+			currentRenderState = renderStates.get(scene);
+			currentRenderState.init();
+			scene.traverseVisible(function (object) {
+				if (object.isLight && object.layers.test(camera.layers)) {
+					currentRenderState.pushLight(object);
 
-			// meta is a string when called from JSON.stringify
-			var isRootObject = ( meta === undefined || typeof meta === 'string' );
+					if (object.castShadow) {
+						currentRenderState.pushShadow(object);
+					}
+				}
+			});
+			currentRenderState.setupLights();
+			scene.traverse(function (object) {
+				const material = object.material;
 
-			var output = {};
+				if (material) {
+					if (Array.isArray(material)) {
+						for (let i = 0; i < material.length; i++) {
+							const material2 = material[i];
+							getProgram(material2, scene, object);
+						}
+					} else {
+						getProgram(material, scene, object);
+					}
+				}
+			});
+		}; // Animation Loop
 
-			// meta is a hash used to collect geometries, materials.
-			// not providing it implies that this is the root object
-			// being serialized.
-			if ( isRootObject ) {
 
-				// initialize meta obj
-				meta = {
-					geometries: {},
-					materials: {},
-					textures: {},
-					images: {},
-					shapes: {}
-				};
+		let onAnimationFrameCallback = null;
 
-				output.metadata = {
-					version: 4.5,
-					type: 'Object',
-					generator: 'Object3D.toJSON'
-				};
+		function onAnimationFrame(time) {
+			if (onAnimationFrameCallback) onAnimationFrameCallback(time);
+		}
 
-			}
+		function onXRSessionStart() {
+			animation.stop();
+		}
 
-			// standard Object3D serialization
+		function onXRSessionEnd() {
+			animation.start();
+		}
 
-			var object = {};
+		const animation = new WebGLAnimation();
+		animation.setAnimationLoop(onAnimationFrame);
+		if (typeof window !== 'undefined') animation.setContext(window);
 
-			object.uuid = this.uuid;
-			object.type = this.type;
+		this.setAnimationLoop = function (callback) {
+			onAnimationFrameCallback = callback;
+			xr.setAnimationLoop(callback);
+			callback === null ? animation.stop() : animation.start();
+		};
 
-			if ( this.name !== '' ) object.name = this.name;
-			if ( this.castShadow === true ) object.castShadow = true;
-			if ( this.receiveShadow === true ) object.receiveShadow = true;
-			if ( this.visible === false ) object.visible = false;
-			if ( this.frustumCulled === false ) object.frustumCulled = false;
-			if ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;
-			if ( JSON.stringify( this.userData ) !== '{}' ) object.userData = this.userData;
+		xr.addEventListener('sessionstart', onXRSessionStart);
+		xr.addEventListener('sessionend', onXRSessionEnd); // Rendering
 
-			object.matrix = this.matrix.toArray();
+		this.render = function (scene, camera) {
+			if (camera !== undefined && camera.isCamera !== true) {
+				console.error('THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.');
+				return;
+			}
 
-			//
+			if (_isContextLost === true) return; // update scene graph
 
-			function serialize( library, element ) {
+			if (scene.autoUpdate === true) scene.updateMatrixWorld(); // update camera matrices and frustum
 
-				if ( library[ element.uuid ] === undefined ) {
+			if (camera.parent === null) camera.updateMatrixWorld();
 
-					library[ element.uuid ] = element.toJSON( meta );
+			if (xr.enabled === true && xr.isPresenting === true) {
+				if (xr.cameraAutoUpdate === true) xr.updateCamera(camera);
+				camera = xr.getCamera(); // use XR camera for rendering
+			} //
 
-				}
 
-				return element.uuid;
+			if (scene.isScene === true) scene.onBeforeRender(_this, scene, camera, _currentRenderTarget);
+			currentRenderState = renderStates.get(scene, renderStateStack.length);
+			currentRenderState.init();
+			renderStateStack.push(currentRenderState);
 
-			}
+			_projScreenMatrix.multiplyMatrices(camera.projectionMatrix, camera.matrixWorldInverse);
 
-			if ( this.geometry !== undefined ) {
+			_frustum.setFromProjectionMatrix(_projScreenMatrix);
 
-				object.geometry = serialize( meta.geometries, this.geometry );
+			_localClippingEnabled = this.localClippingEnabled;
+			_clippingEnabled = clipping.init(this.clippingPlanes, _localClippingEnabled, camera);
+			currentRenderList = renderLists.get(scene, renderListStack.length);
+			currentRenderList.init();
+			renderListStack.push(currentRenderList);
+			projectObject(scene, camera, 0, _this.sortObjects);
+			currentRenderList.finish();
 
-				var parameters = this.geometry.parameters;
+			if (_this.sortObjects === true) {
+				currentRenderList.sort(_opaqueSort, _transparentSort);
+			} //
 
-				if ( parameters !== undefined && parameters.shapes !== undefined ) {
 
-					var shapes = parameters.shapes;
+			if (_clippingEnabled === true) clipping.beginShadows();
+			const shadowsArray = currentRenderState.state.shadowsArray;
+			shadowMap.render(shadowsArray, scene, camera);
+			currentRenderState.setupLights();
+			currentRenderState.setupLightsView(camera);
+			if (_clippingEnabled === true) clipping.endShadows(); //
 
-					if ( Array.isArray( shapes ) ) {
+			if (this.info.autoReset === true) this.info.reset(); //
 
-						for ( var i = 0, l = shapes.length; i < l; i ++ ) {
+			background.render(currentRenderList, scene); // render scene
 
-							var shape = shapes[ i ];
+			const opaqueObjects = currentRenderList.opaque;
+			const transmissiveObjects = currentRenderList.transmissive;
+			const transparentObjects = currentRenderList.transparent;
+			if (opaqueObjects.length > 0) renderObjects(opaqueObjects, scene, camera);
+			if (transmissiveObjects.length > 0) renderTransmissiveObjects(opaqueObjects, transmissiveObjects, scene, camera);
+			if (transparentObjects.length > 0) renderObjects(transparentObjects, scene, camera); //
 
-							serialize( meta.shapes, shape );
+			if (_currentRenderTarget !== null) {
+				// resolve multisample renderbuffers to a single-sample texture if necessary
+				textures.updateMultisampleRenderTarget(_currentRenderTarget); // Generate mipmap if we're using any kind of mipmap filtering
 
-						}
+				textures.updateRenderTargetMipmap(_currentRenderTarget);
+			} //
 
-					} else {
 
-						serialize( meta.shapes, shapes );
+			if (scene.isScene === true) scene.onAfterRender(_this, scene, camera); // Ensure depth buffer writing is enabled so it can be cleared on next render
 
-					}
+			state.buffers.depth.setTest(true);
+			state.buffers.depth.setMask(true);
+			state.buffers.color.setMask(true);
+			state.setPolygonOffset(false); // _gl.finish();
 
-				}
+			bindingStates.resetDefaultState();
+			_currentMaterialId = -1;
+			_currentCamera = null;
+			renderStateStack.pop();
 
+			if (renderStateStack.length > 0) {
+				currentRenderState = renderStateStack[renderStateStack.length - 1];
+			} else {
+				currentRenderState = null;
 			}
 
-			if ( this.material !== undefined ) {
-
-				if ( Array.isArray( this.material ) ) {
+			renderListStack.pop();
 
-					var uuids = [];
+			if (renderListStack.length > 0) {
+				currentRenderList = renderListStack[renderListStack.length - 1];
+			} else {
+				currentRenderList = null;
+			}
+		};
 
-					for ( var i = 0, l = this.material.length; i < l; i ++ ) {
+		function projectObject(object, camera, groupOrder, sortObjects) {
+			if (object.visible === false) return;
+			const visible = object.layers.test(camera.layers);
 
-						uuids.push( serialize( meta.materials, this.material[ i ] ) );
+			if (visible) {
+				if (object.isGroup) {
+					groupOrder = object.renderOrder;
+				} else if (object.isLOD) {
+					if (object.autoUpdate === true) object.update(camera);
+				} else if (object.isLight) {
+					currentRenderState.pushLight(object);
 
+					if (object.castShadow) {
+						currentRenderState.pushShadow(object);
 					}
+				} else if (object.isSprite) {
+					if (!object.frustumCulled || _frustum.intersectsSprite(object)) {
+						if (sortObjects) {
+							_vector3.setFromMatrixPosition(object.matrixWorld).applyMatrix4(_projScreenMatrix);
+						}
 
-					object.material = uuids;
-
-				} else {
-
-					object.material = serialize( meta.materials, this.material );
-
-				}
+						const geometry = objects.update(object);
+						const material = object.material;
 
-			}
+						if (material.visible) {
+							currentRenderList.push(object, geometry, material, groupOrder, _vector3.z, null);
+						}
+					}
+				} else if (object.isImmediateRenderObject) {
+					if (sortObjects) {
+						_vector3.setFromMatrixPosition(object.matrixWorld).applyMatrix4(_projScreenMatrix);
+					}
 
-			//
+					currentRenderList.push(object, null, object.material, groupOrder, _vector3.z, null);
+				} else if (object.isMesh || object.isLine || object.isPoints) {
+					if (object.isSkinnedMesh) {
+						// update skeleton only once in a frame
+						if (object.skeleton.frame !== info.render.frame) {
+							object.skeleton.update();
+							object.skeleton.frame = info.render.frame;
+						}
+					}
 
-			if ( this.children.length > 0 ) {
+					if (!object.frustumCulled || _frustum.intersectsObject(object)) {
+						if (sortObjects) {
+							_vector3.setFromMatrixPosition(object.matrixWorld).applyMatrix4(_projScreenMatrix);
+						}
 
-				object.children = [];
+						const geometry = objects.update(object);
+						const material = object.material;
 
-				for ( var i = 0; i < this.children.length; i ++ ) {
+						if (Array.isArray(material)) {
+							const groups = geometry.groups;
 
-					object.children.push( this.children[ i ].toJSON( meta ).object );
+							for (let i = 0, l = groups.length; i < l; i++) {
+								const group = groups[i];
+								const groupMaterial = material[group.materialIndex];
 
+								if (groupMaterial && groupMaterial.visible) {
+									currentRenderList.push(object, geometry, groupMaterial, groupOrder, _vector3.z, group);
+								}
+							}
+						} else if (material.visible) {
+							currentRenderList.push(object, geometry, material, groupOrder, _vector3.z, null);
+						}
+					}
 				}
-
 			}
 
-			if ( isRootObject ) {
-
-				var geometries = extractFromCache( meta.geometries );
-				var materials = extractFromCache( meta.materials );
-				var textures = extractFromCache( meta.textures );
-				var images = extractFromCache( meta.images );
-				var shapes = extractFromCache( meta.shapes );
-
-				if ( geometries.length > 0 ) output.geometries = geometries;
-				if ( materials.length > 0 ) output.materials = materials;
-				if ( textures.length > 0 ) output.textures = textures;
-				if ( images.length > 0 ) output.images = images;
-				if ( shapes.length > 0 ) output.shapes = shapes;
+			const children = object.children;
 
+			for (let i = 0, l = children.length; i < l; i++) {
+				projectObject(children[i], camera, groupOrder, sortObjects);
 			}
+		}
 
-			output.object = object;
+		function renderTransmissiveObjects(opaqueObjects, transmissiveObjects, scene, camera) {
+			if (_transmissionRenderTarget === null) {
+				const needsAntialias = _antialias === true && capabilities.isWebGL2 === true;
+				const renderTargetType = needsAntialias ? WebGLMultisampleRenderTarget : WebGLRenderTarget;
+				_transmissionRenderTarget = new renderTargetType(1024, 1024, {
+					generateMipmaps: true,
+					type: utils.convert(HalfFloatType) !== null ? HalfFloatType : UnsignedByteType,
+					minFilter: LinearMipmapLinearFilter,
+					magFilter: NearestFilter,
+					wrapS: ClampToEdgeWrapping,
+					wrapT: ClampToEdgeWrapping
+				});
+			}
 
-			return output;
+			const currentRenderTarget = _this.getRenderTarget();
 
-			// extract data from the cache hash
-			// remove metadata on each item
-			// and return as array
-			function extractFromCache( cache ) {
+			_this.setRenderTarget(_transmissionRenderTarget);
 
-				var values = [];
-				for ( var key in cache ) {
+			_this.clear(); // Turn off the features which can affect the frag color for opaque objects pass.
+			// Otherwise they are applied twice in opaque objects pass and transmission objects pass.
 
-					var data = cache[ key ];
-					delete data.metadata;
-					values.push( data );
 
-				}
-				return values;
+			const currentToneMapping = _this.toneMapping;
+			_this.toneMapping = NoToneMapping;
+			renderObjects(opaqueObjects, scene, camera);
+			_this.toneMapping = currentToneMapping;
+			textures.updateMultisampleRenderTarget(_transmissionRenderTarget);
+			textures.updateRenderTargetMipmap(_transmissionRenderTarget);
 
-			}
+			_this.setRenderTarget(currentRenderTarget);
 
-		},
+			renderObjects(transmissiveObjects, scene, camera);
+		}
 
-		clone: function ( recursive ) {
+		function renderObjects(renderList, scene, camera) {
+			const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;
 
-			return new this.constructor().copy( this, recursive );
+			for (let i = 0, l = renderList.length; i < l; i++) {
+				const renderItem = renderList[i];
+				const object = renderItem.object;
+				const geometry = renderItem.geometry;
+				const material = overrideMaterial === null ? renderItem.material : overrideMaterial;
+				const group = renderItem.group;
 
-		},
+				if (camera.isArrayCamera) {
+					const cameras = camera.cameras;
 
-		copy: function ( source, recursive ) {
+					for (let j = 0, jl = cameras.length; j < jl; j++) {
+						const camera2 = cameras[j];
 
-			if ( recursive === undefined ) recursive = true;
+						if (object.layers.test(camera2.layers)) {
+							state.viewport(_currentViewport.copy(camera2.viewport));
+							currentRenderState.setupLightsView(camera2);
+							renderObject(object, scene, camera2, geometry, material, group);
+						}
+					}
+				} else {
+					renderObject(object, scene, camera, geometry, material, group);
+				}
+			}
+		}
 
-			this.name = source.name;
+		function renderObject(object, scene, camera, geometry, material, group) {
+			object.onBeforeRender(_this, scene, camera, geometry, material, group);
+			object.modelViewMatrix.multiplyMatrices(camera.matrixWorldInverse, object.matrixWorld);
+			object.normalMatrix.getNormalMatrix(object.modelViewMatrix);
 
-			this.up.copy( source.up );
+			if (object.isImmediateRenderObject) {
+				const program = setProgram(camera, scene, material, object);
+				state.setMaterial(material);
+				bindingStates.reset();
+				renderObjectImmediate(object, program);
+			} else {
+				if (material.transparent === true && material.side === DoubleSide) {
+					material.side = BackSide;
+					material.needsUpdate = true;
 
-			this.position.copy( source.position );
-			this.quaternion.copy( source.quaternion );
-			this.scale.copy( source.scale );
+					_this.renderBufferDirect(camera, scene, geometry, material, object, group);
 
-			this.matrix.copy( source.matrix );
-			this.matrixWorld.copy( source.matrixWorld );
+					material.side = FrontSide;
+					material.needsUpdate = true;
 
-			this.matrixAutoUpdate = source.matrixAutoUpdate;
-			this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
+					_this.renderBufferDirect(camera, scene, geometry, material, object, group);
 
-			this.layers.mask = source.layers.mask;
-			this.visible = source.visible;
+					material.side = DoubleSide;
+				} else {
+					_this.renderBufferDirect(camera, scene, geometry, material, object, group);
+				}
+			}
 
-			this.castShadow = source.castShadow;
-			this.receiveShadow = source.receiveShadow;
+			object.onAfterRender(_this, scene, camera, geometry, material, group);
+		}
 
-			this.frustumCulled = source.frustumCulled;
-			this.renderOrder = source.renderOrder;
+		function getProgram(material, scene, object) {
+			if (scene.isScene !== true) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...
 
-			this.userData = JSON.parse( JSON.stringify( source.userData ) );
+			const materialProperties = properties.get(material);
+			const lights = currentRenderState.state.lights;
+			const shadowsArray = currentRenderState.state.shadowsArray;
+			const lightsStateVersion = lights.state.version;
+			const parameters = programCache.getParameters(material, lights.state, shadowsArray, scene, object);
+			const programCacheKey = programCache.getProgramCacheKey(parameters);
+			let programs = materialProperties.programs; // always update environment and fog - changing these trigger an getProgram call, but it's possible that the program doesn't change
 
-			if ( recursive === true ) {
+			materialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;
+			materialProperties.fog = scene.fog;
+			materialProperties.envMap = cubemaps.get(material.envMap || materialProperties.environment);
 
-				for ( var i = 0; i < source.children.length; i ++ ) {
+			if (programs === undefined) {
+				// new material
+				material.addEventListener('dispose', onMaterialDispose);
+				programs = new Map();
+				materialProperties.programs = programs;
+			}
 
-					var child = source.children[ i ];
-					this.add( child.clone() );
+			let program = programs.get(programCacheKey);
 
+			if (program !== undefined) {
+				// early out if program and light state is identical
+				if (materialProperties.currentProgram === program && materialProperties.lightsStateVersion === lightsStateVersion) {
+					updateCommonMaterialProperties(material, parameters);
+					return program;
 				}
-
+			} else {
+				parameters.uniforms = programCache.getUniforms(material);
+				material.onBuild(parameters, _this);
+				material.onBeforeCompile(parameters, _this);
+				program = programCache.acquireProgram(parameters, programCacheKey);
+				programs.set(programCacheKey, program);
+				materialProperties.uniforms = parameters.uniforms;
 			}
 
-			return this;
+			const uniforms = materialProperties.uniforms;
+
+			if (!material.isShaderMaterial && !material.isRawShaderMaterial || material.clipping === true) {
+				uniforms.clippingPlanes = clipping.uniform;
+			}
+
+			updateCommonMaterialProperties(material, parameters); // store the light setup it was created for
+
+			materialProperties.needsLights = materialNeedsLights(material);
+			materialProperties.lightsStateVersion = lightsStateVersion;
+
+			if (materialProperties.needsLights) {
+				// wire up the material to this renderer's lighting state
+				uniforms.ambientLightColor.value = lights.state.ambient;
+				uniforms.lightProbe.value = lights.state.probe;
+				uniforms.directionalLights.value = lights.state.directional;
+				uniforms.directionalLightShadows.value = lights.state.directionalShadow;
+				uniforms.spotLights.value = lights.state.spot;
+				uniforms.spotLightShadows.value = lights.state.spotShadow;
+				uniforms.rectAreaLights.value = lights.state.rectArea;
+				uniforms.ltc_1.value = lights.state.rectAreaLTC1;
+				uniforms.ltc_2.value = lights.state.rectAreaLTC2;
+				uniforms.pointLights.value = lights.state.point;
+				uniforms.pointLightShadows.value = lights.state.pointShadow;
+				uniforms.hemisphereLights.value = lights.state.hemi;
+				uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
+				uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
+				uniforms.spotShadowMap.value = lights.state.spotShadowMap;
+				uniforms.spotShadowMatrix.value = lights.state.spotShadowMatrix;
+				uniforms.pointShadowMap.value = lights.state.pointShadowMap;
+				uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix; // TODO (abelnation): add area lights shadow info to uniforms
+			}
 
+			const progUniforms = program.getUniforms();
+			const uniformsList = WebGLUniforms.seqWithValue(progUniforms.seq, uniforms);
+			materialProperties.currentProgram = program;
+			materialProperties.uniformsList = uniformsList;
+			return program;
 		}
 
-	} );
+		function updateCommonMaterialProperties(material, parameters) {
+			const materialProperties = properties.get(material);
+			materialProperties.outputEncoding = parameters.outputEncoding;
+			materialProperties.instancing = parameters.instancing;
+			materialProperties.skinning = parameters.skinning;
+			materialProperties.numClippingPlanes = parameters.numClippingPlanes;
+			materialProperties.numIntersection = parameters.numClipIntersection;
+			materialProperties.vertexAlphas = parameters.vertexAlphas;
+		}
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author WestLangley / http://github.com/WestLangley
-	*/
+		function setProgram(camera, scene, material, object) {
+			if (scene.isScene !== true) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...
 
-	function Camera() {
+			textures.resetTextureUnits();
+			const fog = scene.fog;
+			const environment = material.isMeshStandardMaterial ? scene.environment : null;
+			const encoding = _currentRenderTarget === null ? _this.outputEncoding : _currentRenderTarget.texture.encoding;
+			const envMap = cubemaps.get(material.envMap || environment);
+			const vertexAlphas = material.vertexColors === true && object.geometry && object.geometry.attributes.color && object.geometry.attributes.color.itemSize === 4;
+			const materialProperties = properties.get(material);
+			const lights = currentRenderState.state.lights;
 
-		Object3D.call( this );
+			if (_clippingEnabled === true) {
+				if (_localClippingEnabled === true || camera !== _currentCamera) {
+					const useCache = camera === _currentCamera && material.id === _currentMaterialId; // we might want to call this function with some ClippingGroup
+					// object instead of the material, once it becomes feasible
+					// (#8465, #8379)
 
-		this.type = 'Camera';
+					clipping.setState(material, camera, useCache);
+				}
+			} //
+
+
+			let needsProgramChange = false;
+
+			if (material.version === materialProperties.__version) {
+				if (materialProperties.needsLights && materialProperties.lightsStateVersion !== lights.state.version) {
+					needsProgramChange = true;
+				} else if (materialProperties.outputEncoding !== encoding) {
+					needsProgramChange = true;
+				} else if (object.isInstancedMesh && materialProperties.instancing === false) {
+					needsProgramChange = true;
+				} else if (!object.isInstancedMesh && materialProperties.instancing === true) {
+					needsProgramChange = true;
+				} else if (object.isSkinnedMesh && materialProperties.skinning === false) {
+					needsProgramChange = true;
+				} else if (!object.isSkinnedMesh && materialProperties.skinning === true) {
+					needsProgramChange = true;
+				} else if (materialProperties.envMap !== envMap) {
+					needsProgramChange = true;
+				} else if (material.fog && materialProperties.fog !== fog) {
+					needsProgramChange = true;
+				} else if (materialProperties.numClippingPlanes !== undefined && (materialProperties.numClippingPlanes !== clipping.numPlanes || materialProperties.numIntersection !== clipping.numIntersection)) {
+					needsProgramChange = true;
+				} else if (materialProperties.vertexAlphas !== vertexAlphas) {
+					needsProgramChange = true;
+				}
+			} else {
+				needsProgramChange = true;
+				materialProperties.__version = material.version;
+			} //
 
-		this.matrixWorldInverse = new Matrix4();
-		this.projectionMatrix = new Matrix4();
 
-	}
+			let program = materialProperties.currentProgram;
 
-	Camera.prototype = Object.assign( Object.create( Object3D.prototype ), {
+			if (needsProgramChange === true) {
+				program = getProgram(material, scene, object);
+			}
 
-		constructor: Camera,
+			let refreshProgram = false;
+			let refreshMaterial = false;
+			let refreshLights = false;
+			const p_uniforms = program.getUniforms(),
+						m_uniforms = materialProperties.uniforms;
 
-		isCamera: true,
+			if (state.useProgram(program.program)) {
+				refreshProgram = true;
+				refreshMaterial = true;
+				refreshLights = true;
+			}
 
-		copy: function ( source, recursive ) {
+			if (material.id !== _currentMaterialId) {
+				_currentMaterialId = material.id;
+				refreshMaterial = true;
+			}
 
-			Object3D.prototype.copy.call( this, source, recursive );
+			if (refreshProgram || _currentCamera !== camera) {
+				p_uniforms.setValue(_gl, 'projectionMatrix', camera.projectionMatrix);
 
-			this.matrixWorldInverse.copy( source.matrixWorldInverse );
-			this.projectionMatrix.copy( source.projectionMatrix );
+				if (capabilities.logarithmicDepthBuffer) {
+					p_uniforms.setValue(_gl, 'logDepthBufFC', 2.0 / (Math.log(camera.far + 1.0) / Math.LN2));
+				}
 
-			return this;
+				if (_currentCamera !== camera) {
+					_currentCamera = camera; // lighting uniforms depend on the camera so enforce an update
+					// now, in case this material supports lights - or later, when
+					// the next material that does gets activated:
 
-		},
+					refreshMaterial = true; // set to true on material change
 
-		getWorldDirection: function () {
+					refreshLights = true; // remains set until update done
+				} // load material specific uniforms
+				// (shader material also gets them for the sake of genericity)
 
-			var quaternion = new Quaternion();
 
-			return function getWorldDirection( target ) {
+				if (material.isShaderMaterial || material.isMeshPhongMaterial || material.isMeshToonMaterial || material.isMeshStandardMaterial || material.envMap) {
+					const uCamPos = p_uniforms.map.cameraPosition;
 
-				if ( target === undefined ) {
+					if (uCamPos !== undefined) {
+						uCamPos.setValue(_gl, _vector3.setFromMatrixPosition(camera.matrixWorld));
+					}
+				}
 
-					console.warn( 'THREE.Camera: .getWorldDirection() target is now required' );
-					target = new Vector3();
+				if (material.isMeshPhongMaterial || material.isMeshToonMaterial || material.isMeshLambertMaterial || material.isMeshBasicMaterial || material.isMeshStandardMaterial || material.isShaderMaterial) {
+					p_uniforms.setValue(_gl, 'isOrthographic', camera.isOrthographicCamera === true);
+				}
 
+				if (material.isMeshPhongMaterial || material.isMeshToonMaterial || material.isMeshLambertMaterial || material.isMeshBasicMaterial || material.isMeshStandardMaterial || material.isShaderMaterial || material.isShadowMaterial || object.isSkinnedMesh) {
+					p_uniforms.setValue(_gl, 'viewMatrix', camera.matrixWorldInverse);
 				}
+			} // skinning uniforms must be set even if material didn't change
+			// auto-setting of texture unit for bone texture must go before other textures
+			// otherwise textures used for skinning can take over texture units reserved for other material textures
 
-				this.getWorldQuaternion( quaternion );
 
-				return target.set( 0, 0, - 1 ).applyQuaternion( quaternion );
+			if (object.isSkinnedMesh) {
+				p_uniforms.setOptional(_gl, object, 'bindMatrix');
+				p_uniforms.setOptional(_gl, object, 'bindMatrixInverse');
+				const skeleton = object.skeleton;
 
-			};
+				if (skeleton) {
+					if (capabilities.floatVertexTextures) {
+						if (skeleton.boneTexture === null) skeleton.computeBoneTexture();
+						p_uniforms.setValue(_gl, 'boneTexture', skeleton.boneTexture, textures);
+						p_uniforms.setValue(_gl, 'boneTextureSize', skeleton.boneTextureSize);
+					} else {
+						p_uniforms.setOptional(_gl, skeleton, 'boneMatrices');
+					}
+				}
+			}
 
-		}(),
+			if (refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow) {
+				materialProperties.receiveShadow = object.receiveShadow;
+				p_uniforms.setValue(_gl, 'receiveShadow', object.receiveShadow);
+			}
 
-		updateMatrixWorld: function ( force ) {
+			if (refreshMaterial) {
+				p_uniforms.setValue(_gl, 'toneMappingExposure', _this.toneMappingExposure);
 
-			Object3D.prototype.updateMatrixWorld.call( this, force );
+				if (materialProperties.needsLights) {
+					// the current material requires lighting info
+					// note: all lighting uniforms are always set correctly
+					// they simply reference the renderer's state for their
+					// values
+					//
+					// use the current material's .needsUpdate flags to set
+					// the GL state when required
+					markUniformsLightsNeedsUpdate(m_uniforms, refreshLights);
+				} // refresh uniforms common to several materials
 
-			this.matrixWorldInverse.getInverse( this.matrixWorld );
 
-		},
+				if (fog && material.fog) {
+					materials.refreshFogUniforms(m_uniforms, fog);
+				}
 
-		clone: function () {
+				materials.refreshMaterialUniforms(m_uniforms, material, _pixelRatio, _height, _transmissionRenderTarget);
+				WebGLUniforms.upload(_gl, materialProperties.uniformsList, m_uniforms, textures);
+			}
 
-			return new this.constructor().copy( this );
+			if (material.isShaderMaterial && material.uniformsNeedUpdate === true) {
+				WebGLUniforms.upload(_gl, materialProperties.uniformsList, m_uniforms, textures);
+				material.uniformsNeedUpdate = false;
+			}
 
-		}
+			if (material.isSpriteMaterial) {
+				p_uniforms.setValue(_gl, 'center', object.center);
+			} // common matrices
 
-	} );
 
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author arose / http://github.com/arose
-	 */
+			p_uniforms.setValue(_gl, 'modelViewMatrix', object.modelViewMatrix);
+			p_uniforms.setValue(_gl, 'normalMatrix', object.normalMatrix);
+			p_uniforms.setValue(_gl, 'modelMatrix', object.matrixWorld);
+			return program;
+		} // If uniforms are marked as clean, they don't need to be loaded to the GPU.
 
-	function OrthographicCamera( left, right, top, bottom, near, far ) {
 
-		Camera.call( this );
+		function markUniformsLightsNeedsUpdate(uniforms, value) {
+			uniforms.ambientLightColor.needsUpdate = value;
+			uniforms.lightProbe.needsUpdate = value;
+			uniforms.directionalLights.needsUpdate = value;
+			uniforms.directionalLightShadows.needsUpdate = value;
+			uniforms.pointLights.needsUpdate = value;
+			uniforms.pointLightShadows.needsUpdate = value;
+			uniforms.spotLights.needsUpdate = value;
+			uniforms.spotLightShadows.needsUpdate = value;
+			uniforms.rectAreaLights.needsUpdate = value;
+			uniforms.hemisphereLights.needsUpdate = value;
+		}
 
-		this.type = 'OrthographicCamera';
+		function materialNeedsLights(material) {
+			return material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial || material.isMeshStandardMaterial || material.isShadowMaterial || material.isShaderMaterial && material.lights === true;
+		}
 
-		this.zoom = 1;
-		this.view = null;
+		this.getActiveCubeFace = function () {
+			return _currentActiveCubeFace;
+		};
 
-		this.left = left;
-		this.right = right;
-		this.top = top;
-		this.bottom = bottom;
+		this.getActiveMipmapLevel = function () {
+			return _currentActiveMipmapLevel;
+		};
 
-		this.near = ( near !== undefined ) ? near : 0.1;
-		this.far = ( far !== undefined ) ? far : 2000;
+		this.getRenderTarget = function () {
+			return _currentRenderTarget;
+		};
 
-		this.updateProjectionMatrix();
+		this.setRenderTarget = function (renderTarget, activeCubeFace = 0, activeMipmapLevel = 0) {
+			_currentRenderTarget = renderTarget;
+			_currentActiveCubeFace = activeCubeFace;
+			_currentActiveMipmapLevel = activeMipmapLevel;
 
-	}
+			if (renderTarget && properties.get(renderTarget).__webglFramebuffer === undefined) {
+				textures.setupRenderTarget(renderTarget);
+			}
 
-	OrthographicCamera.prototype = Object.assign( Object.create( Camera.prototype ), {
+			let framebuffer = null;
+			let isCube = false;
+			let isRenderTarget3D = false;
 
-		constructor: OrthographicCamera,
+			if (renderTarget) {
+				const texture = renderTarget.texture;
 
-		isOrthographicCamera: true,
+				if (texture.isDataTexture3D || texture.isDataTexture2DArray) {
+					isRenderTarget3D = true;
+				}
 
-		copy: function ( source, recursive ) {
+				const __webglFramebuffer = properties.get(renderTarget).__webglFramebuffer;
 
-			Camera.prototype.copy.call( this, source, recursive );
+				if (renderTarget.isWebGLCubeRenderTarget) {
+					framebuffer = __webglFramebuffer[activeCubeFace];
+					isCube = true;
+				} else if (renderTarget.isWebGLMultisampleRenderTarget) {
+					framebuffer = properties.get(renderTarget).__webglMultisampledFramebuffer;
+				} else {
+					framebuffer = __webglFramebuffer;
+				}
 
-			this.left = source.left;
-			this.right = source.right;
-			this.top = source.top;
-			this.bottom = source.bottom;
-			this.near = source.near;
-			this.far = source.far;
+				_currentViewport.copy(renderTarget.viewport);
 
-			this.zoom = source.zoom;
-			this.view = source.view === null ? null : Object.assign( {}, source.view );
+				_currentScissor.copy(renderTarget.scissor);
 
-			return this;
+				_currentScissorTest = renderTarget.scissorTest;
+			} else {
+				_currentViewport.copy(_viewport).multiplyScalar(_pixelRatio).floor();
 
-		},
+				_currentScissor.copy(_scissor).multiplyScalar(_pixelRatio).floor();
 
-		setViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {
+				_currentScissorTest = _scissorTest;
+			}
 
-			if ( this.view === null ) {
+			const framebufferBound = state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);
 
-				this.view = {
-					enabled: true,
-					fullWidth: 1,
-					fullHeight: 1,
-					offsetX: 0,
-					offsetY: 0,
-					width: 1,
-					height: 1
-				};
+			if (framebufferBound && capabilities.drawBuffers) {
+				let needsUpdate = false;
 
-			}
+				if (renderTarget) {
+					if (renderTarget.isWebGLMultipleRenderTargets) {
+						const textures = renderTarget.texture;
 
-			this.view.enabled = true;
-			this.view.fullWidth = fullWidth;
-			this.view.fullHeight = fullHeight;
-			this.view.offsetX = x;
-			this.view.offsetY = y;
-			this.view.width = width;
-			this.view.height = height;
+						if (_currentDrawBuffers.length !== textures.length || _currentDrawBuffers[0] !== _gl.COLOR_ATTACHMENT0) {
+							for (let i = 0, il = textures.length; i < il; i++) {
+								_currentDrawBuffers[i] = _gl.COLOR_ATTACHMENT0 + i;
+							}
 
-			this.updateProjectionMatrix();
+							_currentDrawBuffers.length = textures.length;
+							needsUpdate = true;
+						}
+					} else {
+						if (_currentDrawBuffers.length !== 1 || _currentDrawBuffers[0] !== _gl.COLOR_ATTACHMENT0) {
+							_currentDrawBuffers[0] = _gl.COLOR_ATTACHMENT0;
+							_currentDrawBuffers.length = 1;
+							needsUpdate = true;
+						}
+					}
+				} else {
+					if (_currentDrawBuffers.length !== 1 || _currentDrawBuffers[0] !== _gl.BACK) {
+						_currentDrawBuffers[0] = _gl.BACK;
+						_currentDrawBuffers.length = 1;
+						needsUpdate = true;
+					}
+				}
 
-		},
+				if (needsUpdate) {
+					if (capabilities.isWebGL2) {
+						_gl.drawBuffers(_currentDrawBuffers);
+					} else {
+						extensions.get('WEBGL_draw_buffers').drawBuffersWEBGL(_currentDrawBuffers);
+					}
+				}
+			}
 
-		clearViewOffset: function () {
+			state.viewport(_currentViewport);
+			state.scissor(_currentScissor);
+			state.setScissorTest(_currentScissorTest);
 
-			if ( this.view !== null ) {
+			if (isCube) {
+				const textureProperties = properties.get(renderTarget.texture);
 
-				this.view.enabled = false;
+				_gl.framebufferTexture2D(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel);
+			} else if (isRenderTarget3D) {
+				const textureProperties = properties.get(renderTarget.texture);
+				const layer = activeCubeFace || 0;
 
+				_gl.framebufferTextureLayer(_gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, textureProperties.__webglTexture, activeMipmapLevel || 0, layer);
 			}
+		};
 
-			this.updateProjectionMatrix();
+		this.readRenderTargetPixels = function (renderTarget, x, y, width, height, buffer, activeCubeFaceIndex) {
+			if (!(renderTarget && renderTarget.isWebGLRenderTarget)) {
+				console.error('THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.');
+				return;
+			}
 
-		},
+			let framebuffer = properties.get(renderTarget).__webglFramebuffer;
 
-		updateProjectionMatrix: function () {
+			if (renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined) {
+				framebuffer = framebuffer[activeCubeFaceIndex];
+			}
 
-			var dx = ( this.right - this.left ) / ( 2 * this.zoom );
-			var dy = ( this.top - this.bottom ) / ( 2 * this.zoom );
-			var cx = ( this.right + this.left ) / 2;
-			var cy = ( this.top + this.bottom ) / 2;
+			if (framebuffer) {
+				state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);
 
-			var left = cx - dx;
-			var right = cx + dx;
-			var top = cy + dy;
-			var bottom = cy - dy;
+				try {
+					const texture = renderTarget.texture;
+					const textureFormat = texture.format;
+					const textureType = texture.type;
 
-			if ( this.view !== null && this.view.enabled ) {
+					if (textureFormat !== RGBAFormat && utils.convert(textureFormat) !== _gl.getParameter(_gl.IMPLEMENTATION_COLOR_READ_FORMAT)) {
+						console.error('THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.');
+						return;
+					}
 
-				var zoomW = this.zoom / ( this.view.width / this.view.fullWidth );
-				var zoomH = this.zoom / ( this.view.height / this.view.fullHeight );
-				var scaleW = ( this.right - this.left ) / this.view.width;
-				var scaleH = ( this.top - this.bottom ) / this.view.height;
+					const halfFloatSupportedByExt = textureType === HalfFloatType && (extensions.has('EXT_color_buffer_half_float') || capabilities.isWebGL2 && extensions.has('EXT_color_buffer_float'));
 
-				left += scaleW * ( this.view.offsetX / zoomW );
-				right = left + scaleW * ( this.view.width / zoomW );
-				top -= scaleH * ( this.view.offsetY / zoomH );
-				bottom = top - scaleH * ( this.view.height / zoomH );
+					if (textureType !== UnsignedByteType && utils.convert(textureType) !== _gl.getParameter(_gl.IMPLEMENTATION_COLOR_READ_TYPE) && // Edge and Chrome Mac < 52 (#9513)
+					!(textureType === FloatType && (capabilities.isWebGL2 || extensions.has('OES_texture_float') || extensions.has('WEBGL_color_buffer_float'))) && // Chrome Mac >= 52 and Firefox
+					!halfFloatSupportedByExt) {
+						console.error('THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.');
+						return;
+					}
 
+					if (_gl.checkFramebufferStatus(_gl.FRAMEBUFFER) === _gl.FRAMEBUFFER_COMPLETE) {
+						// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)
+						if (x >= 0 && x <= renderTarget.width - width && y >= 0 && y <= renderTarget.height - height) {
+							_gl.readPixels(x, y, width, height, utils.convert(textureFormat), utils.convert(textureType), buffer);
+						}
+					} else {
+						console.error('THREE.WebGLRenderer.readRenderTargetPixels: readPixels from renderTarget failed. Framebuffer not complete.');
+					}
+				} finally {
+					// restore framebuffer of current render target if necessary
+					const framebuffer = _currentRenderTarget !== null ? properties.get(_currentRenderTarget).__webglFramebuffer : null;
+					state.bindFramebuffer(_gl.FRAMEBUFFER, framebuffer);
+				}
 			}
+		};
 
-			this.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far );
+		this.copyFramebufferToTexture = function (position, texture, level = 0) {
+			const levelScale = Math.pow(2, -level);
+			const width = Math.floor(texture.image.width * levelScale);
+			const height = Math.floor(texture.image.height * levelScale);
+			let glFormat = utils.convert(texture.format);
 
-		},
+			if (capabilities.isWebGL2) {
+				// Workaround for https://bugs.chromium.org/p/chromium/issues/detail?id=1120100
+				// Not needed in Chrome 93+
+				if (glFormat === _gl.RGB) glFormat = _gl.RGB8;
+				if (glFormat === _gl.RGBA) glFormat = _gl.RGBA8;
+			}
 
-		toJSON: function ( meta ) {
+			textures.setTexture2D(texture, 0);
 
-			var data = Object3D.prototype.toJSON.call( this, meta );
+			_gl.copyTexImage2D(_gl.TEXTURE_2D, level, glFormat, position.x, position.y, width, height, 0);
 
-			data.object.zoom = this.zoom;
-			data.object.left = this.left;
-			data.object.right = this.right;
-			data.object.top = this.top;
-			data.object.bottom = this.bottom;
-			data.object.near = this.near;
-			data.object.far = this.far;
+			state.unbindTexture();
+		};
 
-			if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );
+		this.copyTextureToTexture = function (position, srcTexture, dstTexture, level = 0) {
+			const width = srcTexture.image.width;
+			const height = srcTexture.image.height;
+			const glFormat = utils.convert(dstTexture.format);
+			const glType = utils.convert(dstTexture.type);
+			textures.setTexture2D(dstTexture, 0); // As another texture upload may have changed pixelStorei
+			// parameters, make sure they are correct for the dstTexture
 
-			return data;
+			_gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, dstTexture.flipY);
 
-		}
+			_gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, dstTexture.premultiplyAlpha);
 
-	} );
+			_gl.pixelStorei(_gl.UNPACK_ALIGNMENT, dstTexture.unpackAlignment);
+
+			if (srcTexture.isDataTexture) {
+				_gl.texSubImage2D(_gl.TEXTURE_2D, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data);
+			} else {
+				if (srcTexture.isCompressedTexture) {
+					_gl.compressedTexSubImage2D(_gl.TEXTURE_2D, level, position.x, position.y, srcTexture.mipmaps[0].width, srcTexture.mipmaps[0].height, glFormat, srcTexture.mipmaps[0].data);
+				} else {
+					_gl.texSubImage2D(_gl.TEXTURE_2D, level, position.x, position.y, glFormat, glType, srcTexture.image);
+				}
+			} // Generate mipmaps only when copying level 0
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 */
 
-	function Face3( a, b, c, normal, color, materialIndex ) {
+			if (level === 0 && dstTexture.generateMipmaps) _gl.generateMipmap(_gl.TEXTURE_2D);
+			state.unbindTexture();
+		};
 
-		this.a = a;
-		this.b = b;
-		this.c = c;
+		this.copyTextureToTexture3D = function (sourceBox, position, srcTexture, dstTexture, level = 0) {
+			if (_this.isWebGL1Renderer) {
+				console.warn('THREE.WebGLRenderer.copyTextureToTexture3D: can only be used with WebGL2.');
+				return;
+			}
 
-		this.normal = ( normal && normal.isVector3 ) ? normal : new Vector3();
-		this.vertexNormals = Array.isArray( normal ) ? normal : [];
+			const width = sourceBox.max.x - sourceBox.min.x + 1;
+			const height = sourceBox.max.y - sourceBox.min.y + 1;
+			const depth = sourceBox.max.z - sourceBox.min.z + 1;
+			const glFormat = utils.convert(dstTexture.format);
+			const glType = utils.convert(dstTexture.type);
+			let glTarget;
 
-		this.color = ( color && color.isColor ) ? color : new Color();
-		this.vertexColors = Array.isArray( color ) ? color : [];
+			if (dstTexture.isDataTexture3D) {
+				textures.setTexture3D(dstTexture, 0);
+				glTarget = _gl.TEXTURE_3D;
+			} else if (dstTexture.isDataTexture2DArray) {
+				textures.setTexture2DArray(dstTexture, 0);
+				glTarget = _gl.TEXTURE_2D_ARRAY;
+			} else {
+				console.warn('THREE.WebGLRenderer.copyTextureToTexture3D: only supports THREE.DataTexture3D and THREE.DataTexture2DArray.');
+				return;
+			}
 
-		this.materialIndex = materialIndex !== undefined ? materialIndex : 0;
+			_gl.pixelStorei(_gl.UNPACK_FLIP_Y_WEBGL, dstTexture.flipY);
 
-	}
+			_gl.pixelStorei(_gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, dstTexture.premultiplyAlpha);
 
-	Object.assign( Face3.prototype, {
+			_gl.pixelStorei(_gl.UNPACK_ALIGNMENT, dstTexture.unpackAlignment);
 
-		clone: function () {
+			const unpackRowLen = _gl.getParameter(_gl.UNPACK_ROW_LENGTH);
 
-			return new this.constructor().copy( this );
+			const unpackImageHeight = _gl.getParameter(_gl.UNPACK_IMAGE_HEIGHT);
 
-		},
+			const unpackSkipPixels = _gl.getParameter(_gl.UNPACK_SKIP_PIXELS);
 
-		copy: function ( source ) {
+			const unpackSkipRows = _gl.getParameter(_gl.UNPACK_SKIP_ROWS);
 
-			this.a = source.a;
-			this.b = source.b;
-			this.c = source.c;
+			const unpackSkipImages = _gl.getParameter(_gl.UNPACK_SKIP_IMAGES);
 
-			this.normal.copy( source.normal );
-			this.color.copy( source.color );
+			const image = srcTexture.isCompressedTexture ? srcTexture.mipmaps[0] : srcTexture.image;
 
-			this.materialIndex = source.materialIndex;
+			_gl.pixelStorei(_gl.UNPACK_ROW_LENGTH, image.width);
 
-			for ( var i = 0, il = source.vertexNormals.length; i < il; i ++ ) {
+			_gl.pixelStorei(_gl.UNPACK_IMAGE_HEIGHT, image.height);
 
-				this.vertexNormals[ i ] = source.vertexNormals[ i ].clone();
+			_gl.pixelStorei(_gl.UNPACK_SKIP_PIXELS, sourceBox.min.x);
 
-			}
+			_gl.pixelStorei(_gl.UNPACK_SKIP_ROWS, sourceBox.min.y);
 
-			for ( var i = 0, il = source.vertexColors.length; i < il; i ++ ) {
+			_gl.pixelStorei(_gl.UNPACK_SKIP_IMAGES, sourceBox.min.z);
 
-				this.vertexColors[ i ] = source.vertexColors[ i ].clone();
+			if (srcTexture.isDataTexture || srcTexture.isDataTexture3D) {
+				_gl.texSubImage3D(glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, glType, image.data);
+			} else {
+				if (srcTexture.isCompressedTexture) {
+					console.warn('THREE.WebGLRenderer.copyTextureToTexture3D: untested support for compressed srcTexture.');
 
+					_gl.compressedTexSubImage3D(glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, image.data);
+				} else {
+					_gl.texSubImage3D(glTarget, level, position.x, position.y, position.z, width, height, depth, glFormat, glType, image);
+				}
 			}
 
-			return this;
+			_gl.pixelStorei(_gl.UNPACK_ROW_LENGTH, unpackRowLen);
 
-		}
+			_gl.pixelStorei(_gl.UNPACK_IMAGE_HEIGHT, unpackImageHeight);
 
-	} );
+			_gl.pixelStorei(_gl.UNPACK_SKIP_PIXELS, unpackSkipPixels);
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author kile / http://kile.stravaganza.org/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 * @author bhouston / http://clara.io
-	 */
+			_gl.pixelStorei(_gl.UNPACK_SKIP_ROWS, unpackSkipRows);
 
-	var geometryId = 0; // Geometry uses even numbers as Id
+			_gl.pixelStorei(_gl.UNPACK_SKIP_IMAGES, unpackSkipImages); // Generate mipmaps only when copying level 0
 
-	function Geometry() {
 
-		Object.defineProperty( this, 'id', { value: geometryId += 2 } );
+			if (level === 0 && dstTexture.generateMipmaps) _gl.generateMipmap(glTarget);
+			state.unbindTexture();
+		};
 
-		this.uuid = _Math.generateUUID();
+		this.initTexture = function (texture) {
+			textures.setTexture2D(texture, 0);
+			state.unbindTexture();
+		};
 
-		this.name = '';
-		this.type = 'Geometry';
+		this.resetState = function () {
+			_currentActiveCubeFace = 0;
+			_currentActiveMipmapLevel = 0;
+			_currentRenderTarget = null;
+			state.reset();
+			bindingStates.reset();
+		};
 
-		this.vertices = [];
-		this.colors = [];
-		this.faces = [];
-		this.faceVertexUvs = [[]];
+		if (typeof __THREE_DEVTOOLS__ !== 'undefined') {
+			__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent('observe', {
+				detail: this
+			})); // eslint-disable-line no-undef
 
-		this.morphTargets = [];
-		this.morphNormals = [];
+		}
+	}
 
-		this.skinWeights = [];
-		this.skinIndices = [];
+	class WebGL1Renderer extends WebGLRenderer {}
 
-		this.lineDistances = [];
+	WebGL1Renderer.prototype.isWebGL1Renderer = true;
 
-		this.boundingBox = null;
-		this.boundingSphere = null;
+	class FogExp2 {
+		constructor(color, density = 0.00025) {
+			this.name = '';
+			this.color = new Color(color);
+			this.density = density;
+		}
 
-		// update flags
+		clone() {
+			return new FogExp2(this.color, this.density);
+		}
 
-		this.elementsNeedUpdate = false;
-		this.verticesNeedUpdate = false;
-		this.uvsNeedUpdate = false;
-		this.normalsNeedUpdate = false;
-		this.colorsNeedUpdate = false;
-		this.lineDistancesNeedUpdate = false;
-		this.groupsNeedUpdate = false;
+		toJSON()
+		/* meta */
+		{
+			return {
+				type: 'FogExp2',
+				color: this.color.getHex(),
+				density: this.density
+			};
+		}
 
 	}
 
-	Geometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+	FogExp2.prototype.isFogExp2 = true;
 
-		constructor: Geometry,
+	class Fog {
+		constructor(color, near = 1, far = 1000) {
+			this.name = '';
+			this.color = new Color(color);
+			this.near = near;
+			this.far = far;
+		}
 
-		isGeometry: true,
+		clone() {
+			return new Fog(this.color, this.near, this.far);
+		}
 
-		applyMatrix: function ( matrix ) {
+		toJSON()
+		/* meta */
+		{
+			return {
+				type: 'Fog',
+				color: this.color.getHex(),
+				near: this.near,
+				far: this.far
+			};
+		}
 
-			var normalMatrix = new Matrix3().getNormalMatrix( matrix );
+	}
 
-			for ( var i = 0, il = this.vertices.length; i < il; i ++ ) {
+	Fog.prototype.isFog = true;
 
-				var vertex = this.vertices[ i ];
-				vertex.applyMatrix4( matrix );
+	class Scene extends Object3D {
+		constructor() {
+			super();
+			this.type = 'Scene';
+			this.background = null;
+			this.environment = null;
+			this.fog = null;
+			this.overrideMaterial = null;
+			this.autoUpdate = true; // checked by the renderer
 
-			}
+			if (typeof __THREE_DEVTOOLS__ !== 'undefined') {
+				__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent('observe', {
+					detail: this
+				})); // eslint-disable-line no-undef
 
-			for ( var i = 0, il = this.faces.length; i < il; i ++ ) {
+			}
+		}
 
-				var face = this.faces[ i ];
-				face.normal.applyMatrix3( normalMatrix ).normalize();
+		copy(source, recursive) {
+			super.copy(source, recursive);
+			if (source.background !== null) this.background = source.background.clone();
+			if (source.environment !== null) this.environment = source.environment.clone();
+			if (source.fog !== null) this.fog = source.fog.clone();
+			if (source.overrideMaterial !== null) this.overrideMaterial = source.overrideMaterial.clone();
+			this.autoUpdate = source.autoUpdate;
+			this.matrixAutoUpdate = source.matrixAutoUpdate;
+			return this;
+		}
 
-				for ( var j = 0, jl = face.vertexNormals.length; j < jl; j ++ ) {
+		toJSON(meta) {
+			const data = super.toJSON(meta);
+			if (this.fog !== null) data.object.fog = this.fog.toJSON();
+			return data;
+		}
 
-					face.vertexNormals[ j ].applyMatrix3( normalMatrix ).normalize();
+	}
 
-				}
+	Scene.prototype.isScene = true;
 
-			}
+	class InterleavedBuffer {
+		constructor(array, stride) {
+			this.array = array;
+			this.stride = stride;
+			this.count = array !== undefined ? array.length / stride : 0;
+			this.usage = StaticDrawUsage;
+			this.updateRange = {
+				offset: 0,
+				count: -1
+			};
+			this.version = 0;
+			this.uuid = generateUUID();
+		}
 
-			if ( this.boundingBox !== null ) {
+		onUploadCallback() {}
 
-				this.computeBoundingBox();
+		set needsUpdate(value) {
+			if (value === true) this.version++;
+		}
 
-			}
+		setUsage(value) {
+			this.usage = value;
+			return this;
+		}
 
-			if ( this.boundingSphere !== null ) {
+		copy(source) {
+			this.array = new source.array.constructor(source.array);
+			this.count = source.count;
+			this.stride = source.stride;
+			this.usage = source.usage;
+			return this;
+		}
 
-				this.computeBoundingSphere();
+		copyAt(index1, attribute, index2) {
+			index1 *= this.stride;
+			index2 *= attribute.stride;
 
+			for (let i = 0, l = this.stride; i < l; i++) {
+				this.array[index1 + i] = attribute.array[index2 + i];
 			}
 
-			this.verticesNeedUpdate = true;
-			this.normalsNeedUpdate = true;
+			return this;
+		}
 
+		set(value, offset = 0) {
+			this.array.set(value, offset);
 			return this;
+		}
 
-		},
+		clone(data) {
+			if (data.arrayBuffers === undefined) {
+				data.arrayBuffers = {};
+			}
 
-		rotateX: function () {
+			if (this.array.buffer._uuid === undefined) {
+				this.array.buffer._uuid = generateUUID();
+			}
 
-			// rotate geometry around world x-axis
+			if (data.arrayBuffers[this.array.buffer._uuid] === undefined) {
+				data.arrayBuffers[this.array.buffer._uuid] = this.array.slice(0).buffer;
+			}
 
-			var m1 = new Matrix4();
+			const array = new this.array.constructor(data.arrayBuffers[this.array.buffer._uuid]);
+			const ib = new this.constructor(array, this.stride);
+			ib.setUsage(this.usage);
+			return ib;
+		}
 
-			return function rotateX( angle ) {
+		onUpload(callback) {
+			this.onUploadCallback = callback;
+			return this;
+		}
 
-				m1.makeRotationX( angle );
+		toJSON(data) {
+			if (data.arrayBuffers === undefined) {
+				data.arrayBuffers = {};
+			} // generate UUID for array buffer if necessary
 
-				this.applyMatrix( m1 );
 
-				return this;
+			if (this.array.buffer._uuid === undefined) {
+				this.array.buffer._uuid = generateUUID();
+			}
 
-			};
+			if (data.arrayBuffers[this.array.buffer._uuid] === undefined) {
+				data.arrayBuffers[this.array.buffer._uuid] = Array.prototype.slice.call(new Uint32Array(this.array.buffer));
+			} //
 
-		}(),
 
-		rotateY: function () {
+			return {
+				uuid: this.uuid,
+				buffer: this.array.buffer._uuid,
+				type: this.array.constructor.name,
+				stride: this.stride
+			};
+		}
 
-			// rotate geometry around world y-axis
+	}
 
-			var m1 = new Matrix4();
+	InterleavedBuffer.prototype.isInterleavedBuffer = true;
 
-			return function rotateY( angle ) {
+	const _vector$6 = /*@__PURE__*/new Vector3();
 
-				m1.makeRotationY( angle );
+	class InterleavedBufferAttribute {
+		constructor(interleavedBuffer, itemSize, offset, normalized = false) {
+			this.name = '';
+			this.data = interleavedBuffer;
+			this.itemSize = itemSize;
+			this.offset = offset;
+			this.normalized = normalized === true;
+		}
 
-				this.applyMatrix( m1 );
-
-				return this;
+		get count() {
+			return this.data.count;
+		}
 
-			};
+		get array() {
+			return this.data.array;
+		}
 
-		}(),
+		set needsUpdate(value) {
+			this.data.needsUpdate = value;
+		}
 
-		rotateZ: function () {
+		applyMatrix4(m) {
+			for (let i = 0, l = this.data.count; i < l; i++) {
+				_vector$6.x = this.getX(i);
+				_vector$6.y = this.getY(i);
+				_vector$6.z = this.getZ(i);
 
-			// rotate geometry around world z-axis
+				_vector$6.applyMatrix4(m);
 
-			var m1 = new Matrix4();
+				this.setXYZ(i, _vector$6.x, _vector$6.y, _vector$6.z);
+			}
 
-			return function rotateZ( angle ) {
+			return this;
+		}
 
-				m1.makeRotationZ( angle );
+		applyNormalMatrix(m) {
+			for (let i = 0, l = this.count; i < l; i++) {
+				_vector$6.x = this.getX(i);
+				_vector$6.y = this.getY(i);
+				_vector$6.z = this.getZ(i);
 
-				this.applyMatrix( m1 );
+				_vector$6.applyNormalMatrix(m);
 
-				return this;
+				this.setXYZ(i, _vector$6.x, _vector$6.y, _vector$6.z);
+			}
 
-			};
+			return this;
+		}
 
-		}(),
+		transformDirection(m) {
+			for (let i = 0, l = this.count; i < l; i++) {
+				_vector$6.x = this.getX(i);
+				_vector$6.y = this.getY(i);
+				_vector$6.z = this.getZ(i);
 
-		translate: function () {
+				_vector$6.transformDirection(m);
 
-			// translate geometry
+				this.setXYZ(i, _vector$6.x, _vector$6.y, _vector$6.z);
+			}
 
-			var m1 = new Matrix4();
+			return this;
+		}
 
-			return function translate( x, y, z ) {
+		setX(index, x) {
+			this.data.array[index * this.data.stride + this.offset] = x;
+			return this;
+		}
 
-				m1.makeTranslation( x, y, z );
+		setY(index, y) {
+			this.data.array[index * this.data.stride + this.offset + 1] = y;
+			return this;
+		}
 
-				this.applyMatrix( m1 );
+		setZ(index, z) {
+			this.data.array[index * this.data.stride + this.offset + 2] = z;
+			return this;
+		}
 
-				return this;
+		setW(index, w) {
+			this.data.array[index * this.data.stride + this.offset + 3] = w;
+			return this;
+		}
 
-			};
+		getX(index) {
+			return this.data.array[index * this.data.stride + this.offset];
+		}
 
-		}(),
+		getY(index) {
+			return this.data.array[index * this.data.stride + this.offset + 1];
+		}
 
-		scale: function () {
+		getZ(index) {
+			return this.data.array[index * this.data.stride + this.offset + 2];
+		}
 
-			// scale geometry
+		getW(index) {
+			return this.data.array[index * this.data.stride + this.offset + 3];
+		}
 
-			var m1 = new Matrix4();
+		setXY(index, x, y) {
+			index = index * this.data.stride + this.offset;
+			this.data.array[index + 0] = x;
+			this.data.array[index + 1] = y;
+			return this;
+		}
 
-			return function scale( x, y, z ) {
+		setXYZ(index, x, y, z) {
+			index = index * this.data.stride + this.offset;
+			this.data.array[index + 0] = x;
+			this.data.array[index + 1] = y;
+			this.data.array[index + 2] = z;
+			return this;
+		}
 
-				m1.makeScale( x, y, z );
+		setXYZW(index, x, y, z, w) {
+			index = index * this.data.stride + this.offset;
+			this.data.array[index + 0] = x;
+			this.data.array[index + 1] = y;
+			this.data.array[index + 2] = z;
+			this.data.array[index + 3] = w;
+			return this;
+		}
 
-				this.applyMatrix( m1 );
+		clone(data) {
+			if (data === undefined) {
+				console.log('THREE.InterleavedBufferAttribute.clone(): Cloning an interlaved buffer attribute will deinterleave buffer data.');
+				const array = [];
 
-				return this;
+				for (let i = 0; i < this.count; i++) {
+					const index = i * this.data.stride + this.offset;
 
-			};
+					for (let j = 0; j < this.itemSize; j++) {
+						array.push(this.data.array[index + j]);
+					}
+				}
 
-		}(),
+				return new BufferAttribute(new this.array.constructor(array), this.itemSize, this.normalized);
+			} else {
+				if (data.interleavedBuffers === undefined) {
+					data.interleavedBuffers = {};
+				}
 
-		lookAt: function () {
+				if (data.interleavedBuffers[this.data.uuid] === undefined) {
+					data.interleavedBuffers[this.data.uuid] = this.data.clone(data);
+				}
 
-			var obj = new Object3D();
+				return new InterleavedBufferAttribute(data.interleavedBuffers[this.data.uuid], this.itemSize, this.offset, this.normalized);
+			}
+		}
 
-			return function lookAt( vector ) {
+		toJSON(data) {
+			if (data === undefined) {
+				console.log('THREE.InterleavedBufferAttribute.toJSON(): Serializing an interlaved buffer attribute will deinterleave buffer data.');
+				const array = [];
 
-				obj.lookAt( vector );
+				for (let i = 0; i < this.count; i++) {
+					const index = i * this.data.stride + this.offset;
 
-				obj.updateMatrix();
+					for (let j = 0; j < this.itemSize; j++) {
+						array.push(this.data.array[index + j]);
+					}
+				} // deinterleave data and save it as an ordinary buffer attribute for now
 
-				this.applyMatrix( obj.matrix );
 
-			};
+				return {
+					itemSize: this.itemSize,
+					type: this.array.constructor.name,
+					array: array,
+					normalized: this.normalized
+				};
+			} else {
+				// save as true interlaved attribtue
+				if (data.interleavedBuffers === undefined) {
+					data.interleavedBuffers = {};
+				}
 
-		}(),
+				if (data.interleavedBuffers[this.data.uuid] === undefined) {
+					data.interleavedBuffers[this.data.uuid] = this.data.toJSON(data);
+				}
 
-		fromBufferGeometry: function ( geometry ) {
+				return {
+					isInterleavedBufferAttribute: true,
+					itemSize: this.itemSize,
+					data: this.data.uuid,
+					offset: this.offset,
+					normalized: this.normalized
+				};
+			}
+		}
 
-			var scope = this;
+	}
 
-			var indices = geometry.index !== null ? geometry.index.array : undefined;
-			var attributes = geometry.attributes;
+	InterleavedBufferAttribute.prototype.isInterleavedBufferAttribute = true;
 
-			var positions = attributes.position.array;
-			var normals = attributes.normal !== undefined ? attributes.normal.array : undefined;
-			var colors = attributes.color !== undefined ? attributes.color.array : undefined;
-			var uvs = attributes.uv !== undefined ? attributes.uv.array : undefined;
-			var uvs2 = attributes.uv2 !== undefined ? attributes.uv2.array : undefined;
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	map: new THREE.Texture( <Image> ),
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *	rotation: <float>,
+	 *	sizeAttenuation: <bool>
+	 * }
+	 */
 
-			if ( uvs2 !== undefined ) this.faceVertexUvs[ 1 ] = [];
+	class SpriteMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'SpriteMaterial';
+			this.color = new Color(0xffffff);
+			this.map = null;
+			this.alphaMap = null;
+			this.rotation = 0;
+			this.sizeAttenuation = true;
+			this.transparent = true;
+			this.setValues(parameters);
+		}
+
+		copy(source) {
+			super.copy(source);
+			this.color.copy(source.color);
+			this.map = source.map;
+			this.alphaMap = source.alphaMap;
+			this.rotation = source.rotation;
+			this.sizeAttenuation = source.sizeAttenuation;
+			return this;
+		}
 
-			var tempNormals = [];
-			var tempUVs = [];
-			var tempUVs2 = [];
+	}
 
-			for ( var i = 0, j = 0; i < positions.length; i += 3, j += 2 ) {
+	SpriteMaterial.prototype.isSpriteMaterial = true;
 
-				scope.vertices.push( new Vector3( positions[ i ], positions[ i + 1 ], positions[ i + 2 ] ) );
+	let _geometry;
 
-				if ( normals !== undefined ) {
+	const _intersectPoint = /*@__PURE__*/new Vector3();
 
-					tempNormals.push( new Vector3( normals[ i ], normals[ i + 1 ], normals[ i + 2 ] ) );
+	const _worldScale = /*@__PURE__*/new Vector3();
 
-				}
+	const _mvPosition = /*@__PURE__*/new Vector3();
 
-				if ( colors !== undefined ) {
+	const _alignedPosition = /*@__PURE__*/new Vector2();
 
-					scope.colors.push( new Color( colors[ i ], colors[ i + 1 ], colors[ i + 2 ] ) );
+	const _rotatedPosition = /*@__PURE__*/new Vector2();
 
-				}
+	const _viewWorldMatrix = /*@__PURE__*/new Matrix4();
 
-				if ( uvs !== undefined ) {
+	const _vA = /*@__PURE__*/new Vector3();
 
-					tempUVs.push( new Vector2( uvs[ j ], uvs[ j + 1 ] ) );
+	const _vB = /*@__PURE__*/new Vector3();
 
-				}
+	const _vC = /*@__PURE__*/new Vector3();
 
-				if ( uvs2 !== undefined ) {
+	const _uvA = /*@__PURE__*/new Vector2();
 
-					tempUVs2.push( new Vector2( uvs2[ j ], uvs2[ j + 1 ] ) );
+	const _uvB = /*@__PURE__*/new Vector2();
 
-				}
+	const _uvC = /*@__PURE__*/new Vector2();
 
-			}
+	class Sprite extends Object3D {
+		constructor(material) {
+			super();
+			this.type = 'Sprite';
 
-			function addFace( a, b, c, materialIndex ) {
+			if (_geometry === undefined) {
+				_geometry = new BufferGeometry();
+				const float32Array = new Float32Array([-0.5, -0.5, 0, 0, 0, 0.5, -0.5, 0, 1, 0, 0.5, 0.5, 0, 1, 1, -0.5, 0.5, 0, 0, 1]);
+				const interleavedBuffer = new InterleavedBuffer(float32Array, 5);
 
-				var vertexNormals = normals !== undefined ? [ tempNormals[ a ].clone(), tempNormals[ b ].clone(), tempNormals[ c ].clone() ] : [];
-				var vertexColors = colors !== undefined ? [ scope.colors[ a ].clone(), scope.colors[ b ].clone(), scope.colors[ c ].clone() ] : [];
+				_geometry.setIndex([0, 1, 2, 0, 2, 3]);
 
-				var face = new Face3( a, b, c, vertexNormals, vertexColors, materialIndex );
+				_geometry.setAttribute('position', new InterleavedBufferAttribute(interleavedBuffer, 3, 0, false));
 
-				scope.faces.push( face );
+				_geometry.setAttribute('uv', new InterleavedBufferAttribute(interleavedBuffer, 2, 3, false));
+			}
 
-				if ( uvs !== undefined ) {
+			this.geometry = _geometry;
+			this.material = material !== undefined ? material : new SpriteMaterial();
+			this.center = new Vector2(0.5, 0.5);
+		}
 
-					scope.faceVertexUvs[ 0 ].push( [ tempUVs[ a ].clone(), tempUVs[ b ].clone(), tempUVs[ c ].clone() ] );
+		raycast(raycaster, intersects) {
+			if (raycaster.camera === null) {
+				console.error('THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.');
+			}
 
-				}
+			_worldScale.setFromMatrixScale(this.matrixWorld);
 
-				if ( uvs2 !== undefined ) {
+			_viewWorldMatrix.copy(raycaster.camera.matrixWorld);
 
-					scope.faceVertexUvs[ 1 ].push( [ tempUVs2[ a ].clone(), tempUVs2[ b ].clone(), tempUVs2[ c ].clone() ] );
+			this.modelViewMatrix.multiplyMatrices(raycaster.camera.matrixWorldInverse, this.matrixWorld);
 
-				}
+			_mvPosition.setFromMatrixPosition(this.modelViewMatrix);
 
+			if (raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false) {
+				_worldScale.multiplyScalar(-_mvPosition.z);
 			}
 
-			var groups = geometry.groups;
+			const rotation = this.material.rotation;
+			let sin, cos;
 
-			if ( groups.length > 0 ) {
-
-				for ( var i = 0; i < groups.length; i ++ ) {
+			if (rotation !== 0) {
+				cos = Math.cos(rotation);
+				sin = Math.sin(rotation);
+			}
 
-					var group = groups[ i ];
+			const center = this.center;
+			transformVertex(_vA.set(-0.5, -0.5, 0), _mvPosition, center, _worldScale, sin, cos);
+			transformVertex(_vB.set(0.5, -0.5, 0), _mvPosition, center, _worldScale, sin, cos);
+			transformVertex(_vC.set(0.5, 0.5, 0), _mvPosition, center, _worldScale, sin, cos);
 
-					var start = group.start;
-					var count = group.count;
+			_uvA.set(0, 0);
 
-					for ( var j = start, jl = start + count; j < jl; j += 3 ) {
+			_uvB.set(1, 0);
 
-						if ( indices !== undefined ) {
+			_uvC.set(1, 1); // check first triangle
 
-							addFace( indices[ j ], indices[ j + 1 ], indices[ j + 2 ], group.materialIndex );
 
-						} else {
+			let intersect = raycaster.ray.intersectTriangle(_vA, _vB, _vC, false, _intersectPoint);
 
-							addFace( j, j + 1, j + 2, group.materialIndex );
+			if (intersect === null) {
+				// check second triangle
+				transformVertex(_vB.set(-0.5, 0.5, 0), _mvPosition, center, _worldScale, sin, cos);
 
-						}
+				_uvB.set(0, 1);
 
-					}
+				intersect = raycaster.ray.intersectTriangle(_vA, _vC, _vB, false, _intersectPoint);
 
+				if (intersect === null) {
+					return;
 				}
+			}
 
-			} else {
-
-				if ( indices !== undefined ) {
+			const distance = raycaster.ray.origin.distanceTo(_intersectPoint);
+			if (distance < raycaster.near || distance > raycaster.far) return;
+			intersects.push({
+				distance: distance,
+				point: _intersectPoint.clone(),
+				uv: Triangle.getUV(_intersectPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2()),
+				face: null,
+				object: this
+			});
+		}
 
-					for ( var i = 0; i < indices.length; i += 3 ) {
+		copy(source) {
+			super.copy(source);
+			if (source.center !== undefined) this.center.copy(source.center);
+			this.material = source.material;
+			return this;
+		}
 
-						addFace( indices[ i ], indices[ i + 1 ], indices[ i + 2 ] );
+	}
 
-					}
+	Sprite.prototype.isSprite = true;
 
-				} else {
+	function transformVertex(vertexPosition, mvPosition, center, scale, sin, cos) {
+		// compute position in camera space
+		_alignedPosition.subVectors(vertexPosition, center).addScalar(0.5).multiply(scale); // to check if rotation is not zero
 
-					for ( var i = 0; i < positions.length / 3; i += 3 ) {
 
-						addFace( i, i + 1, i + 2 );
+		if (sin !== undefined) {
+			_rotatedPosition.x = cos * _alignedPosition.x - sin * _alignedPosition.y;
+			_rotatedPosition.y = sin * _alignedPosition.x + cos * _alignedPosition.y;
+		} else {
+			_rotatedPosition.copy(_alignedPosition);
+		}
 
-					}
+		vertexPosition.copy(mvPosition);
+		vertexPosition.x += _rotatedPosition.x;
+		vertexPosition.y += _rotatedPosition.y; // transform to world space
 
-				}
+		vertexPosition.applyMatrix4(_viewWorldMatrix);
+	}
 
-			}
+	const _v1$2 = /*@__PURE__*/new Vector3();
 
-			this.computeFaceNormals();
+	const _v2$1 = /*@__PURE__*/new Vector3();
 
-			if ( geometry.boundingBox !== null ) {
+	class LOD extends Object3D {
+		constructor() {
+			super();
+			this._currentLevel = 0;
+			this.type = 'LOD';
+			Object.defineProperties(this, {
+				levels: {
+					enumerable: true,
+					value: []
+				},
+				isLOD: {
+					value: true
+				}
+			});
+			this.autoUpdate = true;
+		}
 
-				this.boundingBox = geometry.boundingBox.clone();
+		copy(source) {
+			super.copy(source, false);
+			const levels = source.levels;
 
+			for (let i = 0, l = levels.length; i < l; i++) {
+				const level = levels[i];
+				this.addLevel(level.object.clone(), level.distance);
 			}
 
-			if ( geometry.boundingSphere !== null ) {
+			this.autoUpdate = source.autoUpdate;
+			return this;
+		}
 
-				this.boundingSphere = geometry.boundingSphere.clone();
+		addLevel(object, distance = 0) {
+			distance = Math.abs(distance);
+			const levels = this.levels;
+			let l;
 
+			for (l = 0; l < levels.length; l++) {
+				if (distance < levels[l].distance) {
+					break;
+				}
 			}
 
+			levels.splice(l, 0, {
+				distance: distance,
+				object: object
+			});
+			this.add(object);
 			return this;
+		}
 
-		},
+		getCurrentLevel() {
+			return this._currentLevel;
+		}
 
-		center: function () {
+		getObjectForDistance(distance) {
+			const levels = this.levels;
 
-			var offset = new Vector3();
+			if (levels.length > 0) {
+				let i, l;
 
-			return function center() {
+				for (i = 1, l = levels.length; i < l; i++) {
+					if (distance < levels[i].distance) {
+						break;
+					}
+				}
 
-				this.computeBoundingBox();
+				return levels[i - 1].object;
+			}
 
-				this.boundingBox.getCenter( offset ).negate();
+			return null;
+		}
 
-				this.translate( offset.x, offset.y, offset.z );
+		raycast(raycaster, intersects) {
+			const levels = this.levels;
 
-				return this;
+			if (levels.length > 0) {
+				_v1$2.setFromMatrixPosition(this.matrixWorld);
 
-			};
+				const distance = raycaster.ray.origin.distanceTo(_v1$2);
+				this.getObjectForDistance(distance).raycast(raycaster, intersects);
+			}
+		}
+
+		update(camera) {
+			const levels = this.levels;
 
-		}(),
+			if (levels.length > 1) {
+				_v1$2.setFromMatrixPosition(camera.matrixWorld);
 
-		normalize: function () {
+				_v2$1.setFromMatrixPosition(this.matrixWorld);
 
-			this.computeBoundingSphere();
+				const distance = _v1$2.distanceTo(_v2$1) / camera.zoom;
+				levels[0].object.visible = true;
+				let i, l;
 
-			var center = this.boundingSphere.center;
-			var radius = this.boundingSphere.radius;
+				for (i = 1, l = levels.length; i < l; i++) {
+					if (distance >= levels[i].distance) {
+						levels[i - 1].object.visible = false;
+						levels[i].object.visible = true;
+					} else {
+						break;
+					}
+				}
 
-			var s = radius === 0 ? 1 : 1.0 / radius;
+				this._currentLevel = i - 1;
+
+				for (; i < l; i++) {
+					levels[i].object.visible = false;
+				}
+			}
+		}
 
-			var matrix = new Matrix4();
-			matrix.set(
-				s, 0, 0, - s * center.x,
-				0, s, 0, - s * center.y,
-				0, 0, s, - s * center.z,
-				0, 0, 0, 1
-			);
+		toJSON(meta) {
+			const data = super.toJSON(meta);
+			if (this.autoUpdate === false) data.object.autoUpdate = false;
+			data.object.levels = [];
+			const levels = this.levels;
 
-			this.applyMatrix( matrix );
+			for (let i = 0, l = levels.length; i < l; i++) {
+				const level = levels[i];
+				data.object.levels.push({
+					object: level.object.uuid,
+					distance: level.distance
+				});
+			}
 
-			return this;
+			return data;
+		}
 
-		},
+	}
 
-		computeFaceNormals: function () {
+	const _basePosition = /*@__PURE__*/new Vector3();
 
-			var cb = new Vector3(), ab = new Vector3();
+	const _skinIndex = /*@__PURE__*/new Vector4();
 
-			for ( var f = 0, fl = this.faces.length; f < fl; f ++ ) {
+	const _skinWeight = /*@__PURE__*/new Vector4();
 
-				var face = this.faces[ f ];
+	const _vector$5 = /*@__PURE__*/new Vector3();
 
-				var vA = this.vertices[ face.a ];
-				var vB = this.vertices[ face.b ];
-				var vC = this.vertices[ face.c ];
+	const _matrix = /*@__PURE__*/new Matrix4();
 
-				cb.subVectors( vC, vB );
-				ab.subVectors( vA, vB );
-				cb.cross( ab );
+	class SkinnedMesh extends Mesh {
+		constructor(geometry, material) {
+			super(geometry, material);
+			this.type = 'SkinnedMesh';
+			this.bindMode = 'attached';
+			this.bindMatrix = new Matrix4();
+			this.bindMatrixInverse = new Matrix4();
+		}
 
-				cb.normalize();
+		copy(source) {
+			super.copy(source);
+			this.bindMode = source.bindMode;
+			this.bindMatrix.copy(source.bindMatrix);
+			this.bindMatrixInverse.copy(source.bindMatrixInverse);
+			this.skeleton = source.skeleton;
+			return this;
+		}
 
-				face.normal.copy( cb );
+		bind(skeleton, bindMatrix) {
+			this.skeleton = skeleton;
 
+			if (bindMatrix === undefined) {
+				this.updateMatrixWorld(true);
+				this.skeleton.calculateInverses();
+				bindMatrix = this.matrixWorld;
 			}
 
-		},
+			this.bindMatrix.copy(bindMatrix);
+			this.bindMatrixInverse.copy(bindMatrix).invert();
+		}
 
-		computeVertexNormals: function ( areaWeighted ) {
+		pose() {
+			this.skeleton.pose();
+		}
 
-			if ( areaWeighted === undefined ) areaWeighted = true;
+		normalizeSkinWeights() {
+			const vector = new Vector4();
+			const skinWeight = this.geometry.attributes.skinWeight;
 
-			var v, vl, f, fl, face, vertices;
+			for (let i = 0, l = skinWeight.count; i < l; i++) {
+				vector.x = skinWeight.getX(i);
+				vector.y = skinWeight.getY(i);
+				vector.z = skinWeight.getZ(i);
+				vector.w = skinWeight.getW(i);
+				const scale = 1.0 / vector.manhattanLength();
 
-			vertices = new Array( this.vertices.length );
+				if (scale !== Infinity) {
+					vector.multiplyScalar(scale);
+				} else {
+					vector.set(1, 0, 0, 0); // do something reasonable
+				}
 
-			for ( v = 0, vl = this.vertices.length; v < vl; v ++ ) {
+				skinWeight.setXYZW(i, vector.x, vector.y, vector.z, vector.w);
+			}
+		}
 
-				vertices[ v ] = new Vector3();
+		updateMatrixWorld(force) {
+			super.updateMatrixWorld(force);
 
+			if (this.bindMode === 'attached') {
+				this.bindMatrixInverse.copy(this.matrixWorld).invert();
+			} else if (this.bindMode === 'detached') {
+				this.bindMatrixInverse.copy(this.bindMatrix).invert();
+			} else {
+				console.warn('THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode);
 			}
+		}
 
-			if ( areaWeighted ) {
+		boneTransform(index, target) {
+			const skeleton = this.skeleton;
+			const geometry = this.geometry;
 
-				// vertex normals weighted by triangle areas
-				// http://www.iquilezles.org/www/articles/normals/normals.htm
+			_skinIndex.fromBufferAttribute(geometry.attributes.skinIndex, index);
 
-				var vA, vB, vC;
-				var cb = new Vector3(), ab = new Vector3();
+			_skinWeight.fromBufferAttribute(geometry.attributes.skinWeight, index);
 
-				for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+			_basePosition.fromBufferAttribute(geometry.attributes.position, index).applyMatrix4(this.bindMatrix);
 
-					face = this.faces[ f ];
+			target.set(0, 0, 0);
 
-					vA = this.vertices[ face.a ];
-					vB = this.vertices[ face.b ];
-					vC = this.vertices[ face.c ];
+			for (let i = 0; i < 4; i++) {
+				const weight = _skinWeight.getComponent(i);
 
-					cb.subVectors( vC, vB );
-					ab.subVectors( vA, vB );
-					cb.cross( ab );
+				if (weight !== 0) {
+					const boneIndex = _skinIndex.getComponent(i);
 
-					vertices[ face.a ].add( cb );
-					vertices[ face.b ].add( cb );
-					vertices[ face.c ].add( cb );
+					_matrix.multiplyMatrices(skeleton.bones[boneIndex].matrixWorld, skeleton.boneInverses[boneIndex]);
 
+					target.addScaledVector(_vector$5.copy(_basePosition).applyMatrix4(_matrix), weight);
 				}
+			}
 
-			} else {
+			return target.applyMatrix4(this.bindMatrixInverse);
+		}
 
-				this.computeFaceNormals();
+	}
 
-				for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+	SkinnedMesh.prototype.isSkinnedMesh = true;
 
-					face = this.faces[ f ];
+	class Bone extends Object3D {
+		constructor() {
+			super();
+			this.type = 'Bone';
+		}
 
-					vertices[ face.a ].add( face.normal );
-					vertices[ face.b ].add( face.normal );
-					vertices[ face.c ].add( face.normal );
+	}
 
-				}
+	Bone.prototype.isBone = true;
 
-			}
+	class DataTexture extends Texture {
+		constructor(data = null, width = 1, height = 1, format, type, mapping, wrapS, wrapT, magFilter = NearestFilter, minFilter = NearestFilter, anisotropy, encoding) {
+			super(null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding);
+			this.image = {
+				data: data,
+				width: width,
+				height: height
+			};
+			this.magFilter = magFilter;
+			this.minFilter = minFilter;
+			this.generateMipmaps = false;
+			this.flipY = false;
+			this.unpackAlignment = 1;
+			this.needsUpdate = true;
+		}
 
-			for ( v = 0, vl = this.vertices.length; v < vl; v ++ ) {
+	}
 
-				vertices[ v ].normalize();
+	DataTexture.prototype.isDataTexture = true;
 
-			}
+	const _offsetMatrix = /*@__PURE__*/new Matrix4();
 
-			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+	const _identityMatrix = /*@__PURE__*/new Matrix4();
 
-				face = this.faces[ f ];
+	class Skeleton {
+		constructor(bones = [], boneInverses = []) {
+			this.uuid = generateUUID();
+			this.bones = bones.slice(0);
+			this.boneInverses = boneInverses;
+			this.boneMatrices = null;
+			this.boneTexture = null;
+			this.boneTextureSize = 0;
+			this.frame = -1;
+			this.init();
+		}
 
-				var vertexNormals = face.vertexNormals;
+		init() {
+			const bones = this.bones;
+			const boneInverses = this.boneInverses;
+			this.boneMatrices = new Float32Array(bones.length * 16); // calculate inverse bone matrices if necessary
 
-				if ( vertexNormals.length === 3 ) {
+			if (boneInverses.length === 0) {
+				this.calculateInverses();
+			} else {
+				// handle special case
+				if (bones.length !== boneInverses.length) {
+					console.warn('THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.');
+					this.boneInverses = [];
 
-					vertexNormals[ 0 ].copy( vertices[ face.a ] );
-					vertexNormals[ 1 ].copy( vertices[ face.b ] );
-					vertexNormals[ 2 ].copy( vertices[ face.c ] );
+					for (let i = 0, il = this.bones.length; i < il; i++) {
+						this.boneInverses.push(new Matrix4());
+					}
+				}
+			}
+		}
 
-				} else {
+		calculateInverses() {
+			this.boneInverses.length = 0;
 
-					vertexNormals[ 0 ] = vertices[ face.a ].clone();
-					vertexNormals[ 1 ] = vertices[ face.b ].clone();
-					vertexNormals[ 2 ] = vertices[ face.c ].clone();
+			for (let i = 0, il = this.bones.length; i < il; i++) {
+				const inverse = new Matrix4();
 
+				if (this.bones[i]) {
+					inverse.copy(this.bones[i].matrixWorld).invert();
 				}
 
+				this.boneInverses.push(inverse);
 			}
+		}
+
+		pose() {
+			// recover the bind-time world matrices
+			for (let i = 0, il = this.bones.length; i < il; i++) {
+				const bone = this.bones[i];
+
+				if (bone) {
+					bone.matrixWorld.copy(this.boneInverses[i]).invert();
+				}
+			} // compute the local matrices, positions, rotations and scales
+
 
-			if ( this.faces.length > 0 ) {
+			for (let i = 0, il = this.bones.length; i < il; i++) {
+				const bone = this.bones[i];
 
-				this.normalsNeedUpdate = true;
+				if (bone) {
+					if (bone.parent && bone.parent.isBone) {
+						bone.matrix.copy(bone.parent.matrixWorld).invert();
+						bone.matrix.multiply(bone.matrixWorld);
+					} else {
+						bone.matrix.copy(bone.matrixWorld);
+					}
 
+					bone.matrix.decompose(bone.position, bone.quaternion, bone.scale);
+				}
 			}
+		}
 
-		},
+		update() {
+			const bones = this.bones;
+			const boneInverses = this.boneInverses;
+			const boneMatrices = this.boneMatrices;
+			const boneTexture = this.boneTexture; // flatten bone matrices to array
 
-		computeFlatVertexNormals: function () {
+			for (let i = 0, il = bones.length; i < il; i++) {
+				// compute the offset between the current and the original transform
+				const matrix = bones[i] ? bones[i].matrixWorld : _identityMatrix;
 
-			var f, fl, face;
+				_offsetMatrix.multiplyMatrices(matrix, boneInverses[i]);
 
-			this.computeFaceNormals();
+				_offsetMatrix.toArray(boneMatrices, i * 16);
+			}
 
-			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+			if (boneTexture !== null) {
+				boneTexture.needsUpdate = true;
+			}
+		}
 
-				face = this.faces[ f ];
+		clone() {
+			return new Skeleton(this.bones, this.boneInverses);
+		}
 
-				var vertexNormals = face.vertexNormals;
+		computeBoneTexture() {
+			// layout (1 matrix = 4 pixels)
+			//			RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
+			//	with	8x8	pixel texture max	 16 bones * 4 pixels =	(8 * 8)
+			//			 16x16 pixel texture max	 64 bones * 4 pixels = (16 * 16)
+			//			 32x32 pixel texture max	256 bones * 4 pixels = (32 * 32)
+			//			 64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)
+			let size = Math.sqrt(this.bones.length * 4); // 4 pixels needed for 1 matrix
 
-				if ( vertexNormals.length === 3 ) {
+			size = ceilPowerOfTwo(size);
+			size = Math.max(size, 4);
+			const boneMatrices = new Float32Array(size * size * 4); // 4 floats per RGBA pixel
 
-					vertexNormals[ 0 ].copy( face.normal );
-					vertexNormals[ 1 ].copy( face.normal );
-					vertexNormals[ 2 ].copy( face.normal );
+			boneMatrices.set(this.boneMatrices); // copy current values
 
-				} else {
+			const boneTexture = new DataTexture(boneMatrices, size, size, RGBAFormat, FloatType);
+			this.boneMatrices = boneMatrices;
+			this.boneTexture = boneTexture;
+			this.boneTextureSize = size;
+			return this;
+		}
 
-					vertexNormals[ 0 ] = face.normal.clone();
-					vertexNormals[ 1 ] = face.normal.clone();
-					vertexNormals[ 2 ] = face.normal.clone();
+		getBoneByName(name) {
+			for (let i = 0, il = this.bones.length; i < il; i++) {
+				const bone = this.bones[i];
 
+				if (bone.name === name) {
+					return bone;
 				}
+			}
+
+			return undefined;
+		}
 
+		dispose() {
+			if (this.boneTexture !== null) {
+				this.boneTexture.dispose();
+				this.boneTexture = null;
 			}
+		}
+
+		fromJSON(json, bones) {
+			this.uuid = json.uuid;
 
-			if ( this.faces.length > 0 ) {
+			for (let i = 0, l = json.bones.length; i < l; i++) {
+				const uuid = json.bones[i];
+				let bone = bones[uuid];
 
-				this.normalsNeedUpdate = true;
+				if (bone === undefined) {
+					console.warn('THREE.Skeleton: No bone found with UUID:', uuid);
+					bone = new Bone();
+				}
 
+				this.bones.push(bone);
+				this.boneInverses.push(new Matrix4().fromArray(json.boneInverses[i]));
 			}
 
-		},
+			this.init();
+			return this;
+		}
+
+		toJSON() {
+			const data = {
+				metadata: {
+					version: 4.5,
+					type: 'Skeleton',
+					generator: 'Skeleton.toJSON'
+				},
+				bones: [],
+				boneInverses: []
+			};
+			data.uuid = this.uuid;
+			const bones = this.bones;
+			const boneInverses = this.boneInverses;
 
-		computeMorphNormals: function () {
+			for (let i = 0, l = bones.length; i < l; i++) {
+				const bone = bones[i];
+				data.bones.push(bone.uuid);
+				const boneInverse = boneInverses[i];
+				data.boneInverses.push(boneInverse.toArray());
+			}
 
-			var i, il, f, fl, face;
+			return data;
+		}
 
-			// save original normals
-			// - create temp variables on first access
-			//   otherwise just copy (for faster repeated calls)
+	}
 
-			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+	const _instanceLocalMatrix = /*@__PURE__*/new Matrix4();
 
-				face = this.faces[ f ];
+	const _instanceWorldMatrix = /*@__PURE__*/new Matrix4();
 
-				if ( ! face.__originalFaceNormal ) {
+	const _instanceIntersects = [];
 
-					face.__originalFaceNormal = face.normal.clone();
+	const _mesh = /*@__PURE__*/new Mesh();
 
-				} else {
+	class InstancedMesh extends Mesh {
+		constructor(geometry, material, count) {
+			super(geometry, material);
+			this.instanceMatrix = new BufferAttribute(new Float32Array(count * 16), 16);
+			this.instanceColor = null;
+			this.count = count;
+			this.frustumCulled = false;
+		}
 
-					face.__originalFaceNormal.copy( face.normal );
+		copy(source) {
+			super.copy(source);
+			this.instanceMatrix.copy(source.instanceMatrix);
+			if (source.instanceColor !== null) this.instanceColor = source.instanceColor.clone();
+			this.count = source.count;
+			return this;
+		}
 
-				}
+		getColorAt(index, color) {
+			color.fromArray(this.instanceColor.array, index * 3);
+		}
 
-				if ( ! face.__originalVertexNormals ) face.__originalVertexNormals = [];
+		getMatrixAt(index, matrix) {
+			matrix.fromArray(this.instanceMatrix.array, index * 16);
+		}
 
-				for ( i = 0, il = face.vertexNormals.length; i < il; i ++ ) {
+		raycast(raycaster, intersects) {
+			const matrixWorld = this.matrixWorld;
+			const raycastTimes = this.count;
+			_mesh.geometry = this.geometry;
+			_mesh.material = this.material;
+			if (_mesh.material === undefined) return;
 
-					if ( ! face.__originalVertexNormals[ i ] ) {
+			for (let instanceId = 0; instanceId < raycastTimes; instanceId++) {
+				// calculate the world matrix for each instance
+				this.getMatrixAt(instanceId, _instanceLocalMatrix);
 
-						face.__originalVertexNormals[ i ] = face.vertexNormals[ i ].clone();
+				_instanceWorldMatrix.multiplyMatrices(matrixWorld, _instanceLocalMatrix); // the mesh represents this single instance
 
-					} else {
 
-						face.__originalVertexNormals[ i ].copy( face.vertexNormals[ i ] );
+				_mesh.matrixWorld = _instanceWorldMatrix;
+
+				_mesh.raycast(raycaster, _instanceIntersects); // process the result of raycast
 
-					}
 
+				for (let i = 0, l = _instanceIntersects.length; i < l; i++) {
+					const intersect = _instanceIntersects[i];
+					intersect.instanceId = instanceId;
+					intersect.object = this;
+					intersects.push(intersect);
 				}
 
+				_instanceIntersects.length = 0;
 			}
+		}
 
-			// use temp geometry to compute face and vertex normals for each morph
+		setColorAt(index, color) {
+			if (this.instanceColor === null) {
+				this.instanceColor = new BufferAttribute(new Float32Array(this.count * 3), 3);
+			}
 
-			var tmpGeo = new Geometry();
-			tmpGeo.faces = this.faces;
+			color.toArray(this.instanceColor.array, index * 3);
+		}
 
-			for ( i = 0, il = this.morphTargets.length; i < il; i ++ ) {
+		setMatrixAt(index, matrix) {
+			matrix.toArray(this.instanceMatrix.array, index * 16);
+		}
 
-				// create on first access
+		updateMorphTargets() {}
 
-				if ( ! this.morphNormals[ i ] ) {
+		dispose() {
+			this.dispatchEvent({
+				type: 'dispose'
+			});
+		}
 
-					this.morphNormals[ i ] = {};
-					this.morphNormals[ i ].faceNormals = [];
-					this.morphNormals[ i ].vertexNormals = [];
+	}
 
-					var dstNormalsFace = this.morphNormals[ i ].faceNormals;
-					var dstNormalsVertex = this.morphNormals[ i ].vertexNormals;
+	InstancedMesh.prototype.isInstancedMesh = true;
 
-					var faceNormal, vertexNormals;
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *
+	 *	linewidth: <float>,
+	 *	linecap: "round",
+	 *	linejoin: "round"
+	 * }
+	 */
 
-					for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+	class LineBasicMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'LineBasicMaterial';
+			this.color = new Color(0xffffff);
+			this.linewidth = 1;
+			this.linecap = 'round';
+			this.linejoin = 'round';
+			this.morphTargets = false;
+			this.setValues(parameters);
+		}
 
-						faceNormal = new Vector3();
-						vertexNormals = { a: new Vector3(), b: new Vector3(), c: new Vector3() };
+		copy(source) {
+			super.copy(source);
+			this.color.copy(source.color);
+			this.linewidth = source.linewidth;
+			this.linecap = source.linecap;
+			this.linejoin = source.linejoin;
+			this.morphTargets = source.morphTargets;
+			return this;
+		}
 
-						dstNormalsFace.push( faceNormal );
-						dstNormalsVertex.push( vertexNormals );
+	}
 
-					}
+	LineBasicMaterial.prototype.isLineBasicMaterial = true;
 
-				}
+	const _start$1 = /*@__PURE__*/new Vector3();
 
-				var morphNormals = this.morphNormals[ i ];
+	const _end$1 = /*@__PURE__*/new Vector3();
 
-				// set vertices to morph target
+	const _inverseMatrix$1 = /*@__PURE__*/new Matrix4();
 
-				tmpGeo.vertices = this.morphTargets[ i ].vertices;
+	const _ray$1 = /*@__PURE__*/new Ray();
 
-				// compute morph normals
+	const _sphere$1 = /*@__PURE__*/new Sphere();
 
-				tmpGeo.computeFaceNormals();
-				tmpGeo.computeVertexNormals();
+	class Line extends Object3D {
+		constructor(geometry = new BufferGeometry(), material = new LineBasicMaterial()) {
+			super();
+			this.type = 'Line';
+			this.geometry = geometry;
+			this.material = material;
+			this.updateMorphTargets();
+		}
 
-				// store morph normals
+		copy(source) {
+			super.copy(source);
+			this.material = source.material;
+			this.geometry = source.geometry;
+			return this;
+		}
 
-				var faceNormal, vertexNormals;
+		computeLineDistances() {
+			const geometry = this.geometry;
 
-				for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
+			if (geometry.isBufferGeometry) {
+				// we assume non-indexed geometry
+				if (geometry.index === null) {
+					const positionAttribute = geometry.attributes.position;
+					const lineDistances = [0];
 
-					face = this.faces[ f ];
+					for (let i = 1, l = positionAttribute.count; i < l; i++) {
+						_start$1.fromBufferAttribute(positionAttribute, i - 1);
 
-					faceNormal = morphNormals.faceNormals[ f ];
-					vertexNormals = morphNormals.vertexNormals[ f ];
+						_end$1.fromBufferAttribute(positionAttribute, i);
 
-					faceNormal.copy( face.normal );
-
-					vertexNormals.a.copy( face.vertexNormals[ 0 ] );
-					vertexNormals.b.copy( face.vertexNormals[ 1 ] );
-					vertexNormals.c.copy( face.vertexNormals[ 2 ] );
+						lineDistances[i] = lineDistances[i - 1];
+						lineDistances[i] += _start$1.distanceTo(_end$1);
+					}
 
+					geometry.setAttribute('lineDistance', new Float32BufferAttribute(lineDistances, 1));
+				} else {
+					console.warn('THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.');
 				}
-
-			}
-
-			// restore original normals
-
-			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {
-
-				face = this.faces[ f ];
-
-				face.normal = face.__originalFaceNormal;
-				face.vertexNormals = face.__originalVertexNormals;
-
+			} else if (geometry.isGeometry) {
+				console.error('THREE.Line.computeLineDistances() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
 			}
 
-		},
-
-		computeBoundingBox: function () {
-
-			if ( this.boundingBox === null ) {
-
-				this.boundingBox = new Box3();
+			return this;
+		}
 
-			}
+		raycast(raycaster, intersects) {
+			const geometry = this.geometry;
+			const matrixWorld = this.matrixWorld;
+			const threshold = raycaster.params.Line.threshold;
+			const drawRange = geometry.drawRange; // Checking boundingSphere distance to ray
 
-			this.boundingBox.setFromPoints( this.vertices );
+			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
 
-		},
+			_sphere$1.copy(geometry.boundingSphere);
 
-		computeBoundingSphere: function () {
+			_sphere$1.applyMatrix4(matrixWorld);
 
-			if ( this.boundingSphere === null ) {
+			_sphere$1.radius += threshold;
+			if (raycaster.ray.intersectsSphere(_sphere$1) === false) return; //
 
-				this.boundingSphere = new Sphere();
+			_inverseMatrix$1.copy(matrixWorld).invert();
 
-			}
+			_ray$1.copy(raycaster.ray).applyMatrix4(_inverseMatrix$1);
 
-			this.boundingSphere.setFromPoints( this.vertices );
+			const localThreshold = threshold / ((this.scale.x + this.scale.y + this.scale.z) / 3);
+			const localThresholdSq = localThreshold * localThreshold;
+			const vStart = new Vector3();
+			const vEnd = new Vector3();
+			const interSegment = new Vector3();
+			const interRay = new Vector3();
+			const step = this.isLineSegments ? 2 : 1;
 
-		},
+			if (geometry.isBufferGeometry) {
+				const index = geometry.index;
+				const attributes = geometry.attributes;
+				const positionAttribute = attributes.position;
 
-		merge: function ( geometry, matrix, materialIndexOffset ) {
+				if (index !== null) {
+					const start = Math.max(0, drawRange.start);
+					const end = Math.min(index.count, drawRange.start + drawRange.count);
 
-			if ( ! ( geometry && geometry.isGeometry ) ) {
+					for (let i = start, l = end - 1; i < l; i += step) {
+						const a = index.getX(i);
+						const b = index.getX(i + 1);
+						vStart.fromBufferAttribute(positionAttribute, a);
+						vEnd.fromBufferAttribute(positionAttribute, b);
 
-				console.error( 'THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.', geometry );
-				return;
+						const distSq = _ray$1.distanceSqToSegment(vStart, vEnd, interRay, interSegment);
 
-			}
+						if (distSq > localThresholdSq) continue;
+						interRay.applyMatrix4(this.matrixWorld); //Move back to world space for distance calculation
 
-			var normalMatrix,
-				vertexOffset = this.vertices.length,
-				vertices1 = this.vertices,
-				vertices2 = geometry.vertices,
-				faces1 = this.faces,
-				faces2 = geometry.faces,
-				uvs1 = this.faceVertexUvs[ 0 ],
-				uvs2 = geometry.faceVertexUvs[ 0 ],
-				colors1 = this.colors,
-				colors2 = geometry.colors;
+						const distance = raycaster.ray.origin.distanceTo(interRay);
+						if (distance < raycaster.near || distance > raycaster.far) continue;
+						intersects.push({
+							distance: distance,
+							// What do we want? intersection point on the ray or on the segment??
+							// point: raycaster.ray.at( distance ),
+							point: interSegment.clone().applyMatrix4(this.matrixWorld),
+							index: i,
+							face: null,
+							faceIndex: null,
+							object: this
+						});
+					}
+				} else {
+					const start = Math.max(0, drawRange.start);
+					const end = Math.min(positionAttribute.count, drawRange.start + drawRange.count);
 
-			if ( materialIndexOffset === undefined ) materialIndexOffset = 0;
+					for (let i = start, l = end - 1; i < l; i += step) {
+						vStart.fromBufferAttribute(positionAttribute, i);
+						vEnd.fromBufferAttribute(positionAttribute, i + 1);
 
-			if ( matrix !== undefined ) {
+						const distSq = _ray$1.distanceSqToSegment(vStart, vEnd, interRay, interSegment);
 
-				normalMatrix = new Matrix3().getNormalMatrix( matrix );
+						if (distSq > localThresholdSq) continue;
+						interRay.applyMatrix4(this.matrixWorld); //Move back to world space for distance calculation
 
+						const distance = raycaster.ray.origin.distanceTo(interRay);
+						if (distance < raycaster.near || distance > raycaster.far) continue;
+						intersects.push({
+							distance: distance,
+							// What do we want? intersection point on the ray or on the segment??
+							// point: raycaster.ray.at( distance ),
+							point: interSegment.clone().applyMatrix4(this.matrixWorld),
+							index: i,
+							face: null,
+							faceIndex: null,
+							object: this
+						});
+					}
+				}
+			} else if (geometry.isGeometry) {
+				console.error('THREE.Line.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
 			}
+		}
 
-			// vertices
-
-			for ( var i = 0, il = vertices2.length; i < il; i ++ ) {
-
-				var vertex = vertices2[ i ];
-
-				var vertexCopy = vertex.clone();
-
-				if ( matrix !== undefined ) vertexCopy.applyMatrix4( matrix );
-
-				vertices1.push( vertexCopy );
+		updateMorphTargets() {
+			const geometry = this.geometry;
 
-			}
+			if (geometry.isBufferGeometry) {
+				const morphAttributes = geometry.morphAttributes;
+				const keys = Object.keys(morphAttributes);
 
-			// colors
+				if (keys.length > 0) {
+					const morphAttribute = morphAttributes[keys[0]];
 
-			for ( var i = 0, il = colors2.length; i < il; i ++ ) {
+					if (morphAttribute !== undefined) {
+						this.morphTargetInfluences = [];
+						this.morphTargetDictionary = {};
 
-				colors1.push( colors2[ i ].clone() );
+						for (let m = 0, ml = morphAttribute.length; m < ml; m++) {
+							const name = morphAttribute[m].name || String(m);
+							this.morphTargetInfluences.push(0);
+							this.morphTargetDictionary[name] = m;
+						}
+					}
+				}
+			} else {
+				const morphTargets = geometry.morphTargets;
 
+				if (morphTargets !== undefined && morphTargets.length > 0) {
+					console.error('THREE.Line.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.');
+				}
 			}
+		}
 
-			// faces
-
-			for ( i = 0, il = faces2.length; i < il; i ++ ) {
-
-				var face = faces2[ i ], faceCopy, normal, color,
-					faceVertexNormals = face.vertexNormals,
-					faceVertexColors = face.vertexColors;
+	}
 
-				faceCopy = new Face3( face.a + vertexOffset, face.b + vertexOffset, face.c + vertexOffset );
-				faceCopy.normal.copy( face.normal );
+	Line.prototype.isLine = true;
 
-				if ( normalMatrix !== undefined ) {
+	const _start = /*@__PURE__*/new Vector3();
 
-					faceCopy.normal.applyMatrix3( normalMatrix ).normalize();
+	const _end = /*@__PURE__*/new Vector3();
 
-				}
+	class LineSegments extends Line {
+		constructor(geometry, material) {
+			super(geometry, material);
+			this.type = 'LineSegments';
+		}
 
-				for ( var j = 0, jl = faceVertexNormals.length; j < jl; j ++ ) {
+		computeLineDistances() {
+			const geometry = this.geometry;
 
-					normal = faceVertexNormals[ j ].clone();
+			if (geometry.isBufferGeometry) {
+				// we assume non-indexed geometry
+				if (geometry.index === null) {
+					const positionAttribute = geometry.attributes.position;
+					const lineDistances = [];
 
-					if ( normalMatrix !== undefined ) {
+					for (let i = 0, l = positionAttribute.count; i < l; i += 2) {
+						_start.fromBufferAttribute(positionAttribute, i);
 
-						normal.applyMatrix3( normalMatrix ).normalize();
+						_end.fromBufferAttribute(positionAttribute, i + 1);
 
+						lineDistances[i] = i === 0 ? 0 : lineDistances[i - 1];
+						lineDistances[i + 1] = lineDistances[i] + _start.distanceTo(_end);
 					}
 
-					faceCopy.vertexNormals.push( normal );
-
-				}
-
-				faceCopy.color.copy( face.color );
-
-				for ( var j = 0, jl = faceVertexColors.length; j < jl; j ++ ) {
-
-					color = faceVertexColors[ j ];
-					faceCopy.vertexColors.push( color.clone() );
-
+					geometry.setAttribute('lineDistance', new Float32BufferAttribute(lineDistances, 1));
+				} else {
+					console.warn('THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.');
 				}
+			} else if (geometry.isGeometry) {
+				console.error('THREE.LineSegments.computeLineDistances() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+			}
 
-				faceCopy.materialIndex = face.materialIndex + materialIndexOffset;
-
-				faces1.push( faceCopy );
+			return this;
+		}
 
-			}
+	}
 
-			// uvs
+	LineSegments.prototype.isLineSegments = true;
 
-			for ( i = 0, il = uvs2.length; i < il; i ++ ) {
+	class LineLoop extends Line {
+		constructor(geometry, material) {
+			super(geometry, material);
+			this.type = 'LineLoop';
+		}
 
-				var uv = uvs2[ i ], uvCopy = [];
+	}
 
-				if ( uv === undefined ) {
+	LineLoop.prototype.isLineLoop = true;
 
-					continue;
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *	map: new THREE.Texture( <Image> ),
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	size: <float>,
+	 *	sizeAttenuation: <bool>
+	 *
+	 *	morphTargets: <bool>
+	 * }
+	 */
 
-				}
+	class PointsMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'PointsMaterial';
+			this.color = new Color(0xffffff);
+			this.map = null;
+			this.alphaMap = null;
+			this.size = 1;
+			this.sizeAttenuation = true;
+			this.morphTargets = false;
+			this.setValues(parameters);
+		}
 
-				for ( var j = 0, jl = uv.length; j < jl; j ++ ) {
+		copy(source) {
+			super.copy(source);
+			this.color.copy(source.color);
+			this.map = source.map;
+			this.alphaMap = source.alphaMap;
+			this.size = source.size;
+			this.sizeAttenuation = source.sizeAttenuation;
+			this.morphTargets = source.morphTargets;
+			return this;
+		}
 
-					uvCopy.push( uv[ j ].clone() );
+	}
 
-				}
+	PointsMaterial.prototype.isPointsMaterial = true;
 
-				uvs1.push( uvCopy );
+	const _inverseMatrix = /*@__PURE__*/new Matrix4();
 
-			}
+	const _ray = /*@__PURE__*/new Ray();
 
-		},
+	const _sphere = /*@__PURE__*/new Sphere();
 
-		mergeMesh: function ( mesh ) {
+	const _position$2 = /*@__PURE__*/new Vector3();
 
-			if ( ! ( mesh && mesh.isMesh ) ) {
+	class Points extends Object3D {
+		constructor(geometry = new BufferGeometry(), material = new PointsMaterial()) {
+			super();
+			this.type = 'Points';
+			this.geometry = geometry;
+			this.material = material;
+			this.updateMorphTargets();
+		}
 
-				console.error( 'THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.', mesh );
-				return;
+		copy(source) {
+			super.copy(source);
+			this.material = source.material;
+			this.geometry = source.geometry;
+			return this;
+		}
 
-			}
+		raycast(raycaster, intersects) {
+			const geometry = this.geometry;
+			const matrixWorld = this.matrixWorld;
+			const threshold = raycaster.params.Points.threshold;
+			const drawRange = geometry.drawRange; // Checking boundingSphere distance to ray
 
-			if ( mesh.matrixAutoUpdate ) mesh.updateMatrix();
+			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
 
-			this.merge( mesh.geometry, mesh.matrix );
+			_sphere.copy(geometry.boundingSphere);
 
-		},
+			_sphere.applyMatrix4(matrixWorld);
 
-		/*
-		 * Checks for duplicate vertices with hashmap.
-		 * Duplicated vertices are removed
-		 * and faces' vertices are updated.
-		 */
+			_sphere.radius += threshold;
+			if (raycaster.ray.intersectsSphere(_sphere) === false) return; //
 
-		mergeVertices: function () {
+			_inverseMatrix.copy(matrixWorld).invert();
 
-			var verticesMap = {}; // Hashmap for looking up vertices by position coordinates (and making sure they are unique)
-			var unique = [], changes = [];
+			_ray.copy(raycaster.ray).applyMatrix4(_inverseMatrix);
 
-			var v, key;
-			var precisionPoints = 4; // number of decimal points, e.g. 4 for epsilon of 0.0001
-			var precision = Math.pow( 10, precisionPoints );
-			var i, il, face;
-			var indices, j, jl;
+			const localThreshold = threshold / ((this.scale.x + this.scale.y + this.scale.z) / 3);
+			const localThresholdSq = localThreshold * localThreshold;
 
-			for ( i = 0, il = this.vertices.length; i < il; i ++ ) {
+			if (geometry.isBufferGeometry) {
+				const index = geometry.index;
+				const attributes = geometry.attributes;
+				const positionAttribute = attributes.position;
 
-				v = this.vertices[ i ];
-				key = Math.round( v.x * precision ) + '_' + Math.round( v.y * precision ) + '_' + Math.round( v.z * precision );
+				if (index !== null) {
+					const start = Math.max(0, drawRange.start);
+					const end = Math.min(index.count, drawRange.start + drawRange.count);
 
-				if ( verticesMap[ key ] === undefined ) {
+					for (let i = start, il = end; i < il; i++) {
+						const a = index.getX(i);
 
-					verticesMap[ key ] = i;
-					unique.push( this.vertices[ i ] );
-					changes[ i ] = unique.length - 1;
+						_position$2.fromBufferAttribute(positionAttribute, a);
 
+						testPoint(_position$2, a, localThresholdSq, matrixWorld, raycaster, intersects, this);
+					}
 				} else {
+					const start = Math.max(0, drawRange.start);
+					const end = Math.min(positionAttribute.count, drawRange.start + drawRange.count);
 
-					//console.log('Duplicate vertex found. ', i, ' could be using ', verticesMap[key]);
-					changes[ i ] = changes[ verticesMap[ key ] ];
+					for (let i = start, l = end; i < l; i++) {
+						_position$2.fromBufferAttribute(positionAttribute, i);
 
+						testPoint(_position$2, i, localThresholdSq, matrixWorld, raycaster, intersects, this);
+					}
 				}
-
+			} else {
+				console.error('THREE.Points.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
 			}
+		}
 
+		updateMorphTargets() {
+			const geometry = this.geometry;
 
-			// if faces are completely degenerate after merging vertices, we
-			// have to remove them from the geometry.
-			var faceIndicesToRemove = [];
-
-			for ( i = 0, il = this.faces.length; i < il; i ++ ) {
-
-				face = this.faces[ i ];
-
-				face.a = changes[ face.a ];
-				face.b = changes[ face.b ];
-				face.c = changes[ face.c ];
-
-				indices = [ face.a, face.b, face.c ];
-
-				// if any duplicate vertices are found in a Face3
-				// we have to remove the face as nothing can be saved
-				for ( var n = 0; n < 3; n ++ ) {
+			if (geometry.isBufferGeometry) {
+				const morphAttributes = geometry.morphAttributes;
+				const keys = Object.keys(morphAttributes);
 
-					if ( indices[ n ] === indices[ ( n + 1 ) % 3 ] ) {
+				if (keys.length > 0) {
+					const morphAttribute = morphAttributes[keys[0]];
 
-						faceIndicesToRemove.push( i );
-						break;
+					if (morphAttribute !== undefined) {
+						this.morphTargetInfluences = [];
+						this.morphTargetDictionary = {};
 
+						for (let m = 0, ml = morphAttribute.length; m < ml; m++) {
+							const name = morphAttribute[m].name || String(m);
+							this.morphTargetInfluences.push(0);
+							this.morphTargetDictionary[name] = m;
+						}
 					}
-
 				}
+			} else {
+				const morphTargets = geometry.morphTargets;
 
-			}
-
-			for ( i = faceIndicesToRemove.length - 1; i >= 0; i -- ) {
-
-				var idx = faceIndicesToRemove[ i ];
-
-				this.faces.splice( idx, 1 );
-
-				for ( j = 0, jl = this.faceVertexUvs.length; j < jl; j ++ ) {
-
-					this.faceVertexUvs[ j ].splice( idx, 1 );
-
+				if (morphTargets !== undefined && morphTargets.length > 0) {
+					console.error('THREE.Points.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.');
 				}
-
 			}
+		}
 
-			// Use unique set of vertices
+	}
 
-			var diff = this.vertices.length - unique.length;
-			this.vertices = unique;
-			return diff;
+	Points.prototype.isPoints = true;
 
-		},
+	function testPoint(point, index, localThresholdSq, matrixWorld, raycaster, intersects, object) {
+		const rayPointDistanceSq = _ray.distanceSqToPoint(point);
 
-		setFromPoints: function ( points ) {
+		if (rayPointDistanceSq < localThresholdSq) {
+			const intersectPoint = new Vector3();
 
-			this.vertices = [];
+			_ray.closestPointToPoint(point, intersectPoint);
 
-			for ( var i = 0, l = points.length; i < l; i ++ ) {
+			intersectPoint.applyMatrix4(matrixWorld);
+			const distance = raycaster.ray.origin.distanceTo(intersectPoint);
+			if (distance < raycaster.near || distance > raycaster.far) return;
+			intersects.push({
+				distance: distance,
+				distanceToRay: Math.sqrt(rayPointDistanceSq),
+				point: intersectPoint,
+				index: index,
+				face: null,
+				object: object
+			});
+		}
+	}
 
-				var point = points[ i ];
-				this.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );
+	class VideoTexture extends Texture {
+		constructor(video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) {
+			super(video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy);
+			this.format = format !== undefined ? format : RGBFormat;
+			this.minFilter = minFilter !== undefined ? minFilter : LinearFilter;
+			this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
+			this.generateMipmaps = false;
+			const scope = this;
 
+			function updateVideo() {
+				scope.needsUpdate = true;
+				video.requestVideoFrameCallback(updateVideo);
 			}
 
-			return this;
-
-		},
-
-		sortFacesByMaterialIndex: function () {
-
-			var faces = this.faces;
-			var length = faces.length;
-
-			// tag faces
+			if ('requestVideoFrameCallback' in video) {
+				video.requestVideoFrameCallback(updateVideo);
+			}
+		}
 
-			for ( var i = 0; i < length; i ++ ) {
+		clone() {
+			return new this.constructor(this.image).copy(this);
+		}
 
-				faces[ i ]._id = i;
+		update() {
+			const video = this.image;
+			const hasVideoFrameCallback = ('requestVideoFrameCallback' in video);
 
+			if (hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA) {
+				this.needsUpdate = true;
 			}
+		}
 
-			// sort faces
-
-			function materialIndexSort( a, b ) {
+	}
 
-				return a.materialIndex - b.materialIndex;
+	VideoTexture.prototype.isVideoTexture = true;
 
-			}
+	class CompressedTexture extends Texture {
+		constructor(mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding) {
+			super(null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding);
+			this.image = {
+				width: width,
+				height: height
+			};
+			this.mipmaps = mipmaps; // no flipping for cube textures
+			// (also flipping doesn't work for compressed textures )
 
-			faces.sort( materialIndexSort );
+			this.flipY = false; // can't generate mipmaps for compressed textures
+			// mips must be embedded in DDS files
 
-			// sort uvs
+			this.generateMipmaps = false;
+		}
 
-			var uvs1 = this.faceVertexUvs[ 0 ];
-			var uvs2 = this.faceVertexUvs[ 1 ];
+	}
 
-			var newUvs1, newUvs2;
+	CompressedTexture.prototype.isCompressedTexture = true;
 
-			if ( uvs1 && uvs1.length === length ) newUvs1 = [];
-			if ( uvs2 && uvs2.length === length ) newUvs2 = [];
+	class CanvasTexture extends Texture {
+		constructor(canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) {
+			super(canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy);
+			this.needsUpdate = true;
+		}
 
-			for ( var i = 0; i < length; i ++ ) {
+	}
 
-				var id = faces[ i ]._id;
+	CanvasTexture.prototype.isCanvasTexture = true;
 
-				if ( newUvs1 ) newUvs1.push( uvs1[ id ] );
-				if ( newUvs2 ) newUvs2.push( uvs2[ id ] );
+	class DepthTexture extends Texture {
+		constructor(width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format) {
+			format = format !== undefined ? format : DepthFormat;
 
+			if (format !== DepthFormat && format !== DepthStencilFormat) {
+				throw new Error('DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat');
 			}
 
-			if ( newUvs1 ) this.faceVertexUvs[ 0 ] = newUvs1;
-			if ( newUvs2 ) this.faceVertexUvs[ 1 ] = newUvs2;
+			if (type === undefined && format === DepthFormat) type = UnsignedShortType;
+			if (type === undefined && format === DepthStencilFormat) type = UnsignedInt248Type;
+			super(null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy);
+			this.image = {
+				width: width,
+				height: height
+			};
+			this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
+			this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
+			this.flipY = false;
+			this.generateMipmaps = false;
+		}
 
-		},
+	}
 
-		toJSON: function () {
+	DepthTexture.prototype.isDepthTexture = true;
 
-			var data = {
-				metadata: {
-					version: 4.5,
-					type: 'Geometry',
-					generator: 'Geometry.toJSON'
-				}
+	class CircleGeometry extends BufferGeometry {
+		constructor(radius = 1, segments = 8, thetaStart = 0, thetaLength = Math.PI * 2) {
+			super();
+			this.type = 'CircleGeometry';
+			this.parameters = {
+				radius: radius,
+				segments: segments,
+				thetaStart: thetaStart,
+				thetaLength: thetaLength
 			};
+			segments = Math.max(3, segments); // buffers
 
-			// standard Geometry serialization
-
-			data.uuid = this.uuid;
-			data.type = this.type;
-			if ( this.name !== '' ) data.name = this.name;
+			const indices = [];
+			const vertices = [];
+			const normals = [];
+			const uvs = []; // helper variables
 
-			if ( this.parameters !== undefined ) {
+			const vertex = new Vector3();
+			const uv = new Vector2(); // center point
 
-				var parameters = this.parameters;
+			vertices.push(0, 0, 0);
+			normals.push(0, 0, 1);
+			uvs.push(0.5, 0.5);
 
-				for ( var key in parameters ) {
+			for (let s = 0, i = 3; s <= segments; s++, i += 3) {
+				const segment = thetaStart + s / segments * thetaLength; // vertex
 
-					if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];
+				vertex.x = radius * Math.cos(segment);
+				vertex.y = radius * Math.sin(segment);
+				vertices.push(vertex.x, vertex.y, vertex.z); // normal
 
-				}
+				normals.push(0, 0, 1); // uvs
 
-				return data;
+				uv.x = (vertices[i] / radius + 1) / 2;
+				uv.y = (vertices[i + 1] / radius + 1) / 2;
+				uvs.push(uv.x, uv.y);
+			} // indices
 
-			}
 
-			var vertices = [];
+			for (let i = 1; i <= segments; i++) {
+				indices.push(i, i + 1, 0);
+			} // build geometry
 
-			for ( var i = 0; i < this.vertices.length; i ++ ) {
 
-				var vertex = this.vertices[ i ];
-				vertices.push( vertex.x, vertex.y, vertex.z );
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+		}
 
-			}
+		static fromJSON(data) {
+			return new CircleGeometry(data.radius, data.segments, data.thetaStart, data.thetaLength);
+		}
 
-			var faces = [];
-			var normals = [];
-			var normalsHash = {};
-			var colors = [];
-			var colorsHash = {};
-			var uvs = [];
-			var uvsHash = {};
+	}
 
-			for ( var i = 0; i < this.faces.length; i ++ ) {
+	class CylinderGeometry extends BufferGeometry {
+		constructor(radiusTop = 1, radiusBottom = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2) {
+			super();
+			this.type = 'CylinderGeometry';
+			this.parameters = {
+				radiusTop: radiusTop,
+				radiusBottom: radiusBottom,
+				height: height,
+				radialSegments: radialSegments,
+				heightSegments: heightSegments,
+				openEnded: openEnded,
+				thetaStart: thetaStart,
+				thetaLength: thetaLength
+			};
+			const scope = this;
+			radialSegments = Math.floor(radialSegments);
+			heightSegments = Math.floor(heightSegments); // buffers
 
-				var face = this.faces[ i ];
+			const indices = [];
+			const vertices = [];
+			const normals = [];
+			const uvs = []; // helper variables
 
-				var hasMaterial = true;
-				var hasFaceUv = false; // deprecated
-				var hasFaceVertexUv = this.faceVertexUvs[ 0 ][ i ] !== undefined;
-				var hasFaceNormal = face.normal.length() > 0;
-				var hasFaceVertexNormal = face.vertexNormals.length > 0;
-				var hasFaceColor = face.color.r !== 1 || face.color.g !== 1 || face.color.b !== 1;
-				var hasFaceVertexColor = face.vertexColors.length > 0;
+			let index = 0;
+			const indexArray = [];
+			const halfHeight = height / 2;
+			let groupStart = 0; // generate geometry
 
-				var faceType = 0;
+			generateTorso();
 
-				faceType = setBit( faceType, 0, 0 ); // isQuad
-				faceType = setBit( faceType, 1, hasMaterial );
-				faceType = setBit( faceType, 2, hasFaceUv );
-				faceType = setBit( faceType, 3, hasFaceVertexUv );
-				faceType = setBit( faceType, 4, hasFaceNormal );
-				faceType = setBit( faceType, 5, hasFaceVertexNormal );
-				faceType = setBit( faceType, 6, hasFaceColor );
-				faceType = setBit( faceType, 7, hasFaceVertexColor );
+			if (openEnded === false) {
+				if (radiusTop > 0) generateCap(true);
+				if (radiusBottom > 0) generateCap(false);
+			} // build geometry
 
-				faces.push( faceType );
-				faces.push( face.a, face.b, face.c );
-				faces.push( face.materialIndex );
 
-				if ( hasFaceVertexUv ) {
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
 
-					var faceVertexUvs = this.faceVertexUvs[ 0 ][ i ];
+			function generateTorso() {
+				const normal = new Vector3();
+				const vertex = new Vector3();
+				let groupCount = 0; // this will be used to calculate the normal
 
-					faces.push(
-						getUvIndex( faceVertexUvs[ 0 ] ),
-						getUvIndex( faceVertexUvs[ 1 ] ),
-						getUvIndex( faceVertexUvs[ 2 ] )
-					);
+				const slope = (radiusBottom - radiusTop) / height; // generate vertices, normals and uvs
 
-				}
+				for (let y = 0; y <= heightSegments; y++) {
+					const indexRow = [];
+					const v = y / heightSegments; // calculate the radius of the current row
 
-				if ( hasFaceNormal ) {
+					const radius = v * (radiusBottom - radiusTop) + radiusTop;
 
-					faces.push( getNormalIndex( face.normal ) );
+					for (let x = 0; x <= radialSegments; x++) {
+						const u = x / radialSegments;
+						const theta = u * thetaLength + thetaStart;
+						const sinTheta = Math.sin(theta);
+						const cosTheta = Math.cos(theta); // vertex
 
-				}
+						vertex.x = radius * sinTheta;
+						vertex.y = -v * height + halfHeight;
+						vertex.z = radius * cosTheta;
+						vertices.push(vertex.x, vertex.y, vertex.z); // normal
 
-				if ( hasFaceVertexNormal ) {
+						normal.set(sinTheta, slope, cosTheta).normalize();
+						normals.push(normal.x, normal.y, normal.z); // uv
 
-					var vertexNormals = face.vertexNormals;
+						uvs.push(u, 1 - v); // save index of vertex in respective row
 
-					faces.push(
-						getNormalIndex( vertexNormals[ 0 ] ),
-						getNormalIndex( vertexNormals[ 1 ] ),
-						getNormalIndex( vertexNormals[ 2 ] )
-					);
+						indexRow.push(index++);
+					} // now save vertices of the row in our index array
 
-				}
 
-				if ( hasFaceColor ) {
+					indexArray.push(indexRow);
+				} // generate indices
 
-					faces.push( getColorIndex( face.color ) );
 
-				}
+				for (let x = 0; x < radialSegments; x++) {
+					for (let y = 0; y < heightSegments; y++) {
+						// we use the index array to access the correct indices
+						const a = indexArray[y][x];
+						const b = indexArray[y + 1][x];
+						const c = indexArray[y + 1][x + 1];
+						const d = indexArray[y][x + 1]; // faces
 
-				if ( hasFaceVertexColor ) {
+						indices.push(a, b, d);
+						indices.push(b, c, d); // update group counter
 
-					var vertexColors = face.vertexColors;
+						groupCount += 6;
+					}
+				} // add a group to the geometry. this will ensure multi material support
 
-					faces.push(
-						getColorIndex( vertexColors[ 0 ] ),
-						getColorIndex( vertexColors[ 1 ] ),
-						getColorIndex( vertexColors[ 2 ] )
-					);
 
-				}
+				scope.addGroup(groupStart, groupCount, 0); // calculate new start value for groups
 
+				groupStart += groupCount;
 			}
 
-			function setBit( value, position, enabled ) {
+			function generateCap(top) {
+				// save the index of the first center vertex
+				const centerIndexStart = index;
+				const uv = new Vector2();
+				const vertex = new Vector3();
+				let groupCount = 0;
+				const radius = top === true ? radiusTop : radiusBottom;
+				const sign = top === true ? 1 : -1; // first we generate the center vertex data of the cap.
+				// because the geometry needs one set of uvs per face,
+				// we must generate a center vertex per face/segment
 
-				return enabled ? value | ( 1 << position ) : value & ( ~ ( 1 << position ) );
+				for (let x = 1; x <= radialSegments; x++) {
+					// vertex
+					vertices.push(0, halfHeight * sign, 0); // normal
 
-			}
+					normals.push(0, sign, 0); // uv
 
-			function getNormalIndex( normal ) {
+					uvs.push(0.5, 0.5); // increase index
 
-				var hash = normal.x.toString() + normal.y.toString() + normal.z.toString();
+					index++;
+				} // save the index of the last center vertex
 
-				if ( normalsHash[ hash ] !== undefined ) {
 
-					return normalsHash[ hash ];
+				const centerIndexEnd = index; // now we generate the surrounding vertices, normals and uvs
 
-				}
+				for (let x = 0; x <= radialSegments; x++) {
+					const u = x / radialSegments;
+					const theta = u * thetaLength + thetaStart;
+					const cosTheta = Math.cos(theta);
+					const sinTheta = Math.sin(theta); // vertex
 
-				normalsHash[ hash ] = normals.length / 3;
-				normals.push( normal.x, normal.y, normal.z );
+					vertex.x = radius * sinTheta;
+					vertex.y = halfHeight * sign;
+					vertex.z = radius * cosTheta;
+					vertices.push(vertex.x, vertex.y, vertex.z); // normal
 
-				return normalsHash[ hash ];
+					normals.push(0, sign, 0); // uv
 
-			}
+					uv.x = cosTheta * 0.5 + 0.5;
+					uv.y = sinTheta * 0.5 * sign + 0.5;
+					uvs.push(uv.x, uv.y); // increase index
 
-			function getColorIndex( color ) {
+					index++;
+				} // generate indices
 
-				var hash = color.r.toString() + color.g.toString() + color.b.toString();
 
-				if ( colorsHash[ hash ] !== undefined ) {
+				for (let x = 0; x < radialSegments; x++) {
+					const c = centerIndexStart + x;
+					const i = centerIndexEnd + x;
 
-					return colorsHash[ hash ];
+					if (top === true) {
+						// face top
+						indices.push(i, i + 1, c);
+					} else {
+						// face bottom
+						indices.push(i + 1, i, c);
+					}
 
-				}
+					groupCount += 3;
+				} // add a group to the geometry. this will ensure multi material support
 
-				colorsHash[ hash ] = colors.length;
-				colors.push( color.getHex() );
 
-				return colorsHash[ hash ];
+				scope.addGroup(groupStart, groupCount, top === true ? 1 : 2); // calculate new start value for groups
 
+				groupStart += groupCount;
 			}
+		}
 
-			function getUvIndex( uv ) {
-
-				var hash = uv.x.toString() + uv.y.toString();
-
-				if ( uvsHash[ hash ] !== undefined ) {
+		static fromJSON(data) {
+			return new CylinderGeometry(data.radiusTop, data.radiusBottom, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength);
+		}
 
-					return uvsHash[ hash ];
+	}
 
-				}
+	class ConeGeometry extends CylinderGeometry {
+		constructor(radius = 1, height = 1, radialSegments = 8, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2) {
+			super(0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength);
+			this.type = 'ConeGeometry';
+			this.parameters = {
+				radius: radius,
+				height: height,
+				radialSegments: radialSegments,
+				heightSegments: heightSegments,
+				openEnded: openEnded,
+				thetaStart: thetaStart,
+				thetaLength: thetaLength
+			};
+		}
 
-				uvsHash[ hash ] = uvs.length / 2;
-				uvs.push( uv.x, uv.y );
+		static fromJSON(data) {
+			return new ConeGeometry(data.radius, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength);
+		}
 
-				return uvsHash[ hash ];
+	}
 
-			}
+	class PolyhedronGeometry extends BufferGeometry {
+		constructor(vertices, indices, radius = 1, detail = 0) {
+			super();
+			this.type = 'PolyhedronGeometry';
+			this.parameters = {
+				vertices: vertices,
+				indices: indices,
+				radius: radius,
+				detail: detail
+			}; // default buffer data
 
-			data.data = {};
+			const vertexBuffer = [];
+			const uvBuffer = []; // the subdivision creates the vertex buffer data
 
-			data.data.vertices = vertices;
-			data.data.normals = normals;
-			if ( colors.length > 0 ) data.data.colors = colors;
-			if ( uvs.length > 0 ) data.data.uvs = [ uvs ]; // temporal backward compatibility
-			data.data.faces = faces;
+			subdivide(detail); // all vertices should lie on a conceptual sphere with a given radius
 
-			return data;
+			applyRadius(radius); // finally, create the uv data
 
-		},
+			generateUVs(); // build non-indexed geometry
 
-		clone: function () {
+			this.setAttribute('position', new Float32BufferAttribute(vertexBuffer, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(vertexBuffer.slice(), 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvBuffer, 2));
 
-			/*
-			 // Handle primitives
+			if (detail === 0) {
+				this.computeVertexNormals(); // flat normals
+			} else {
+				this.normalizeNormals(); // smooth normals
+			} // helper functions
 
-			 var parameters = this.parameters;
 
-			 if ( parameters !== undefined ) {
+			function subdivide(detail) {
+				const a = new Vector3();
+				const b = new Vector3();
+				const c = new Vector3(); // iterate over all faces and apply a subdivison with the given detail value
 
-			 var values = [];
+				for (let i = 0; i < indices.length; i += 3) {
+					// get the vertices of the face
+					getVertexByIndex(indices[i + 0], a);
+					getVertexByIndex(indices[i + 1], b);
+					getVertexByIndex(indices[i + 2], c); // perform subdivision
 
-			 for ( var key in parameters ) {
+					subdivideFace(a, b, c, detail);
+				}
+			}
 
-			 values.push( parameters[ key ] );
+			function subdivideFace(a, b, c, detail) {
+				const cols = detail + 1; // we use this multidimensional array as a data structure for creating the subdivision
 
-			 }
+				const v = []; // construct all of the vertices for this subdivision
 
-			 var geometry = Object.create( this.constructor.prototype );
-			 this.constructor.apply( geometry, values );
-			 return geometry;
+				for (let i = 0; i <= cols; i++) {
+					v[i] = [];
+					const aj = a.clone().lerp(c, i / cols);
+					const bj = b.clone().lerp(c, i / cols);
+					const rows = cols - i;
 
-			 }
+					for (let j = 0; j <= rows; j++) {
+						if (j === 0 && i === cols) {
+							v[i][j] = aj;
+						} else {
+							v[i][j] = aj.clone().lerp(bj, j / rows);
+						}
+					}
+				} // construct all of the faces
 
-			 return new this.constructor().copy( this );
-			 */
 
-			return new Geometry().copy( this );
+				for (let i = 0; i < cols; i++) {
+					for (let j = 0; j < 2 * (cols - i) - 1; j++) {
+						const k = Math.floor(j / 2);
 
-		},
+						if (j % 2 === 0) {
+							pushVertex(v[i][k + 1]);
+							pushVertex(v[i + 1][k]);
+							pushVertex(v[i][k]);
+						} else {
+							pushVertex(v[i][k + 1]);
+							pushVertex(v[i + 1][k + 1]);
+							pushVertex(v[i + 1][k]);
+						}
+					}
+				}
+			}
 
-		copy: function ( source ) {
+			function applyRadius(radius) {
+				const vertex = new Vector3(); // iterate over the entire buffer and apply the radius to each vertex
 
-			var i, il, j, jl, k, kl;
+				for (let i = 0; i < vertexBuffer.length; i += 3) {
+					vertex.x = vertexBuffer[i + 0];
+					vertex.y = vertexBuffer[i + 1];
+					vertex.z = vertexBuffer[i + 2];
+					vertex.normalize().multiplyScalar(radius);
+					vertexBuffer[i + 0] = vertex.x;
+					vertexBuffer[i + 1] = vertex.y;
+					vertexBuffer[i + 2] = vertex.z;
+				}
+			}
 
-			// reset
+			function generateUVs() {
+				const vertex = new Vector3();
 
-			this.vertices = [];
-			this.colors = [];
-			this.faces = [];
-			this.faceVertexUvs = [[]];
-			this.morphTargets = [];
-			this.morphNormals = [];
-			this.skinWeights = [];
-			this.skinIndices = [];
-			this.lineDistances = [];
-			this.boundingBox = null;
-			this.boundingSphere = null;
+				for (let i = 0; i < vertexBuffer.length; i += 3) {
+					vertex.x = vertexBuffer[i + 0];
+					vertex.y = vertexBuffer[i + 1];
+					vertex.z = vertexBuffer[i + 2];
+					const u = azimuth(vertex) / 2 / Math.PI + 0.5;
+					const v = inclination(vertex) / Math.PI + 0.5;
+					uvBuffer.push(u, 1 - v);
+				}
 
-			// name
+				correctUVs();
+				correctSeam();
+			}
 
-			this.name = source.name;
+			function correctSeam() {
+				// handle case when face straddles the seam, see #3269
+				for (let i = 0; i < uvBuffer.length; i += 6) {
+					// uv data of a single face
+					const x0 = uvBuffer[i + 0];
+					const x1 = uvBuffer[i + 2];
+					const x2 = uvBuffer[i + 4];
+					const max = Math.max(x0, x1, x2);
+					const min = Math.min(x0, x1, x2); // 0.9 is somewhat arbitrary
 
-			// vertices
+					if (max > 0.9 && min < 0.1) {
+						if (x0 < 0.2) uvBuffer[i + 0] += 1;
+						if (x1 < 0.2) uvBuffer[i + 2] += 1;
+						if (x2 < 0.2) uvBuffer[i + 4] += 1;
+					}
+				}
+			}
 
-			var vertices = source.vertices;
+			function pushVertex(vertex) {
+				vertexBuffer.push(vertex.x, vertex.y, vertex.z);
+			}
 
-			for ( i = 0, il = vertices.length; i < il; i ++ ) {
+			function getVertexByIndex(index, vertex) {
+				const stride = index * 3;
+				vertex.x = vertices[stride + 0];
+				vertex.y = vertices[stride + 1];
+				vertex.z = vertices[stride + 2];
+			}
 
-				this.vertices.push( vertices[ i ].clone() );
+			function correctUVs() {
+				const a = new Vector3();
+				const b = new Vector3();
+				const c = new Vector3();
+				const centroid = new Vector3();
+				const uvA = new Vector2();
+				const uvB = new Vector2();
+				const uvC = new Vector2();
 
+				for (let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6) {
+					a.set(vertexBuffer[i + 0], vertexBuffer[i + 1], vertexBuffer[i + 2]);
+					b.set(vertexBuffer[i + 3], vertexBuffer[i + 4], vertexBuffer[i + 5]);
+					c.set(vertexBuffer[i + 6], vertexBuffer[i + 7], vertexBuffer[i + 8]);
+					uvA.set(uvBuffer[j + 0], uvBuffer[j + 1]);
+					uvB.set(uvBuffer[j + 2], uvBuffer[j + 3]);
+					uvC.set(uvBuffer[j + 4], uvBuffer[j + 5]);
+					centroid.copy(a).add(b).add(c).divideScalar(3);
+					const azi = azimuth(centroid);
+					correctUV(uvA, j + 0, a, azi);
+					correctUV(uvB, j + 2, b, azi);
+					correctUV(uvC, j + 4, c, azi);
+				}
 			}
 
-			// colors
+			function correctUV(uv, stride, vector, azimuth) {
+				if (azimuth < 0 && uv.x === 1) {
+					uvBuffer[stride] = uv.x - 1;
+				}
+
+				if (vector.x === 0 && vector.z === 0) {
+					uvBuffer[stride] = azimuth / 2 / Math.PI + 0.5;
+				}
+			} // Angle around the Y axis, counter-clockwise when looking from above.
 
-			var colors = source.colors;
 
-			for ( i = 0, il = colors.length; i < il; i ++ ) {
+			function azimuth(vector) {
+				return Math.atan2(vector.z, -vector.x);
+			} // Angle above the XZ plane.
 
-				this.colors.push( colors[ i ].clone() );
 
+			function inclination(vector) {
+				return Math.atan2(-vector.y, Math.sqrt(vector.x * vector.x + vector.z * vector.z));
 			}
+		}
+
+		static fromJSON(data) {
+			return new PolyhedronGeometry(data.vertices, data.indices, data.radius, data.details);
+		}
 
-			// faces
+	}
 
-			var faces = source.faces;
+	class DodecahedronGeometry extends PolyhedronGeometry {
+		constructor(radius = 1, detail = 0) {
+			const t = (1 + Math.sqrt(5)) / 2;
+			const r = 1 / t;
+			const vertices = [// (±1, ±1, ±1)
+			-1, -1, -1, -1, -1, 1, -1, 1, -1, -1, 1, 1, 1, -1, -1, 1, -1, 1, 1, 1, -1, 1, 1, 1, // (0, ±1/φ, ±φ)
+			0, -r, -t, 0, -r, t, 0, r, -t, 0, r, t, // (±1/φ, ±φ, 0)
+			-r, -t, 0, -r, t, 0, r, -t, 0, r, t, 0, // (±φ, 0, ±1/φ)
+			-t, 0, -r, t, 0, -r, -t, 0, r, t, 0, r];
+			const indices = [3, 11, 7, 3, 7, 15, 3, 15, 13, 7, 19, 17, 7, 17, 6, 7, 6, 15, 17, 4, 8, 17, 8, 10, 17, 10, 6, 8, 0, 16, 8, 16, 2, 8, 2, 10, 0, 12, 1, 0, 1, 18, 0, 18, 16, 6, 10, 2, 6, 2, 13, 6, 13, 15, 2, 16, 18, 2, 18, 3, 2, 3, 13, 18, 1, 9, 18, 9, 11, 18, 11, 3, 4, 14, 12, 4, 12, 0, 4, 0, 8, 11, 9, 5, 11, 5, 19, 11, 19, 7, 19, 5, 14, 19, 14, 4, 19, 4, 17, 1, 12, 14, 1, 14, 5, 1, 5, 9];
+			super(vertices, indices, radius, detail);
+			this.type = 'DodecahedronGeometry';
+			this.parameters = {
+				radius: radius,
+				detail: detail
+			};
+		}
 
-			for ( i = 0, il = faces.length; i < il; i ++ ) {
+		static fromJSON(data) {
+			return new DodecahedronGeometry(data.radius, data.detail);
+		}
 
-				this.faces.push( faces[ i ].clone() );
+	}
 
-			}
+	const _v0 = new Vector3();
 
-			// face vertex uvs
+	const _v1$1 = new Vector3();
 
-			for ( i = 0, il = source.faceVertexUvs.length; i < il; i ++ ) {
+	const _normal = new Vector3();
 
-				var faceVertexUvs = source.faceVertexUvs[ i ];
+	const _triangle = new Triangle();
 
-				if ( this.faceVertexUvs[ i ] === undefined ) {
+	class EdgesGeometry extends BufferGeometry {
+		constructor(geometry, thresholdAngle) {
+			super();
+			this.type = 'EdgesGeometry';
+			this.parameters = {
+				thresholdAngle: thresholdAngle
+			};
+			thresholdAngle = thresholdAngle !== undefined ? thresholdAngle : 1;
 
-					this.faceVertexUvs[ i ] = [];
+			if (geometry.isGeometry === true) {
+				console.error('THREE.EdgesGeometry no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+				return;
+			}
 
+			const precisionPoints = 4;
+			const precision = Math.pow(10, precisionPoints);
+			const thresholdDot = Math.cos(DEG2RAD * thresholdAngle);
+			const indexAttr = geometry.getIndex();
+			const positionAttr = geometry.getAttribute('position');
+			const indexCount = indexAttr ? indexAttr.count : positionAttr.count;
+			const indexArr = [0, 0, 0];
+			const vertKeys = ['a', 'b', 'c'];
+			const hashes = new Array(3);
+			const edgeData = {};
+			const vertices = [];
+
+			for (let i = 0; i < indexCount; i += 3) {
+				if (indexAttr) {
+					indexArr[0] = indexAttr.getX(i);
+					indexArr[1] = indexAttr.getX(i + 1);
+					indexArr[2] = indexAttr.getX(i + 2);
+				} else {
+					indexArr[0] = i;
+					indexArr[1] = i + 1;
+					indexArr[2] = i + 2;
 				}
 
-				for ( j = 0, jl = faceVertexUvs.length; j < jl; j ++ ) {
+				const {
+					a,
+					b,
+					c
+				} = _triangle;
+				a.fromBufferAttribute(positionAttr, indexArr[0]);
+				b.fromBufferAttribute(positionAttr, indexArr[1]);
+				c.fromBufferAttribute(positionAttr, indexArr[2]);
 
-					var uvs = faceVertexUvs[ j ], uvsCopy = [];
+				_triangle.getNormal(_normal); // create hashes for the edge from the vertices
 
-					for ( k = 0, kl = uvs.length; k < kl; k ++ ) {
 
-						var uv = uvs[ k ];
+				hashes[0] = `${Math.round(a.x * precision)},${Math.round(a.y * precision)},${Math.round(a.z * precision)}`;
+				hashes[1] = `${Math.round(b.x * precision)},${Math.round(b.y * precision)},${Math.round(b.z * precision)}`;
+				hashes[2] = `${Math.round(c.x * precision)},${Math.round(c.y * precision)},${Math.round(c.z * precision)}`; // skip degenerate triangles
 
-						uvsCopy.push( uv.clone() );
+				if (hashes[0] === hashes[1] || hashes[1] === hashes[2] || hashes[2] === hashes[0]) {
+					continue;
+				} // iterate over every edge
+
+
+				for (let j = 0; j < 3; j++) {
+					// get the first and next vertex making up the edge
+					const jNext = (j + 1) % 3;
+					const vecHash0 = hashes[j];
+					const vecHash1 = hashes[jNext];
+					const v0 = _triangle[vertKeys[j]];
+					const v1 = _triangle[vertKeys[jNext]];
+					const hash = `${vecHash0}_${vecHash1}`;
+					const reverseHash = `${vecHash1}_${vecHash0}`;
+
+					if (reverseHash in edgeData && edgeData[reverseHash]) {
+						// if we found a sibling edge add it into the vertex array if
+						// it meets the angle threshold and delete the edge from the map.
+						if (_normal.dot(edgeData[reverseHash].normal) <= thresholdDot) {
+							vertices.push(v0.x, v0.y, v0.z);
+							vertices.push(v1.x, v1.y, v1.z);
+						}
 
+						edgeData[reverseHash] = null;
+					} else if (!(hash in edgeData)) {
+						// if we've already got an edge here then skip adding a new one
+						edgeData[hash] = {
+							index0: indexArr[j],
+							index1: indexArr[jNext],
+							normal: _normal.clone()
+						};
 					}
-
-					this.faceVertexUvs[ i ].push( uvsCopy );
-
 				}
+			} // iterate over all remaining, unmatched edges and add them to the vertex array
 
-			}
 
-			// morph targets
+			for (const key in edgeData) {
+				if (edgeData[key]) {
+					const {
+						index0,
+						index1
+					} = edgeData[key];
 
-			var morphTargets = source.morphTargets;
+					_v0.fromBufferAttribute(positionAttr, index0);
 
-			for ( i = 0, il = morphTargets.length; i < il; i ++ ) {
+					_v1$1.fromBufferAttribute(positionAttr, index1);
 
-				var morphTarget = {};
-				morphTarget.name = morphTargets[ i ].name;
+					vertices.push(_v0.x, _v0.y, _v0.z);
+					vertices.push(_v1$1.x, _v1$1.y, _v1$1.z);
+				}
+			}
 
-				// vertices
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+		}
 
-				if ( morphTargets[ i ].vertices !== undefined ) {
-
-					morphTarget.vertices = [];
-
-					for ( j = 0, jl = morphTargets[ i ].vertices.length; j < jl; j ++ ) {
-
-						morphTarget.vertices.push( morphTargets[ i ].vertices[ j ].clone() );
-
-					}
-
-				}
+	}
 
-				// normals
+	/**
+	 * Extensible curve object.
+	 *
+	 * Some common of curve methods:
+	 * .getPoint( t, optionalTarget ), .getTangent( t, optionalTarget )
+	 * .getPointAt( u, optionalTarget ), .getTangentAt( u, optionalTarget )
+	 * .getPoints(), .getSpacedPoints()
+	 * .getLength()
+	 * .updateArcLengths()
+	 *
+	 * This following curves inherit from THREE.Curve:
+	 *
+	 * -- 2D curves --
+	 * THREE.ArcCurve
+	 * THREE.CubicBezierCurve
+	 * THREE.EllipseCurve
+	 * THREE.LineCurve
+	 * THREE.QuadraticBezierCurve
+	 * THREE.SplineCurve
+	 *
+	 * -- 3D curves --
+	 * THREE.CatmullRomCurve3
+	 * THREE.CubicBezierCurve3
+	 * THREE.LineCurve3
+	 * THREE.QuadraticBezierCurve3
+	 *
+	 * A series of curves can be represented as a THREE.CurvePath.
+	 *
+	 **/
 
-				if ( morphTargets[ i ].normals !== undefined ) {
+	class Curve {
+		constructor() {
+			this.type = 'Curve';
+			this.arcLengthDivisions = 200;
+		} // Virtual base class method to overwrite and implement in subclasses
+		//	- t [0 .. 1]
 
-					morphTarget.normals = [];
 
-					for ( j = 0, jl = morphTargets[ i ].normals.length; j < jl; j ++ ) {
+		getPoint()
+		/* t, optionalTarget */
+		{
+			console.warn('THREE.Curve: .getPoint() not implemented.');
+			return null;
+		} // Get point at relative position in curve according to arc length
+		// - u [0 .. 1]
 
-						morphTarget.normals.push( morphTargets[ i ].normals[ j ].clone() );
 
-					}
+		getPointAt(u, optionalTarget) {
+			const t = this.getUtoTmapping(u);
+			return this.getPoint(t, optionalTarget);
+		} // Get sequence of points using getPoint( t )
 
-				}
 
-				this.morphTargets.push( morphTarget );
+		getPoints(divisions = 5) {
+			const points = [];
 
+			for (let d = 0; d <= divisions; d++) {
+				points.push(this.getPoint(d / divisions));
 			}
 
-			// morph normals
+			return points;
+		} // Get sequence of points using getPointAt( u )
 
-			var morphNormals = source.morphNormals;
 
-			for ( i = 0, il = morphNormals.length; i < il; i ++ ) {
+		getSpacedPoints(divisions = 5) {
+			const points = [];
 
-				var morphNormal = {};
+			for (let d = 0; d <= divisions; d++) {
+				points.push(this.getPointAt(d / divisions));
+			}
 
-				// vertex normals
+			return points;
+		} // Get total curve arc length
 
-				if ( morphNormals[ i ].vertexNormals !== undefined ) {
 
-					morphNormal.vertexNormals = [];
+		getLength() {
+			const lengths = this.getLengths();
+			return lengths[lengths.length - 1];
+		} // Get list of cumulative segment lengths
 
-					for ( j = 0, jl = morphNormals[ i ].vertexNormals.length; j < jl; j ++ ) {
 
-						var srcVertexNormal = morphNormals[ i ].vertexNormals[ j ];
-						var destVertexNormal = {};
+		getLengths(divisions = this.arcLengthDivisions) {
+			if (this.cacheArcLengths && this.cacheArcLengths.length === divisions + 1 && !this.needsUpdate) {
+				return this.cacheArcLengths;
+			}
 
-						destVertexNormal.a = srcVertexNormal.a.clone();
-						destVertexNormal.b = srcVertexNormal.b.clone();
-						destVertexNormal.c = srcVertexNormal.c.clone();
+			this.needsUpdate = false;
+			const cache = [];
+			let current,
+					last = this.getPoint(0);
+			let sum = 0;
+			cache.push(0);
+
+			for (let p = 1; p <= divisions; p++) {
+				current = this.getPoint(p / divisions);
+				sum += current.distanceTo(last);
+				cache.push(sum);
+				last = current;
+			}
 
-						morphNormal.vertexNormals.push( destVertexNormal );
+			this.cacheArcLengths = cache;
+			return cache; // { sums: cache, sum: sum }; Sum is in the last element.
+		}
 
-					}
+		updateArcLengths() {
+			this.needsUpdate = true;
+			this.getLengths();
+		} // Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant
 
-				}
 
-				// face normals
+		getUtoTmapping(u, distance) {
+			const arcLengths = this.getLengths();
+			let i = 0;
+			const il = arcLengths.length;
+			let targetArcLength; // The targeted u distance value to get
 
-				if ( morphNormals[ i ].faceNormals !== undefined ) {
+			if (distance) {
+				targetArcLength = distance;
+			} else {
+				targetArcLength = u * arcLengths[il - 1];
+			} // binary search for the index with largest value smaller than target u distance
 
-					morphNormal.faceNormals = [];
 
-					for ( j = 0, jl = morphNormals[ i ].faceNormals.length; j < jl; j ++ ) {
+			let low = 0,
+					high = il - 1,
+					comparison;
 
-						morphNormal.faceNormals.push( morphNormals[ i ].faceNormals[ j ].clone() );
+			while (low <= high) {
+				i = Math.floor(low + (high - low) / 2); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats
 
-					}
+				comparison = arcLengths[i] - targetArcLength;
 
+				if (comparison < 0) {
+					low = i + 1;
+				} else if (comparison > 0) {
+					high = i - 1;
+				} else {
+					high = i;
+					break; // DONE
 				}
-
-				this.morphNormals.push( morphNormal );
-
 			}
 
-			// skin weights
+			i = high;
 
-			var skinWeights = source.skinWeights;
+			if (arcLengths[i] === targetArcLength) {
+				return i / (il - 1);
+			} // we could get finer grain at lengths, or use simple interpolation between two points
 
-			for ( i = 0, il = skinWeights.length; i < il; i ++ ) {
 
-				this.skinWeights.push( skinWeights[ i ].clone() );
+			const lengthBefore = arcLengths[i];
+			const lengthAfter = arcLengths[i + 1];
+			const segmentLength = lengthAfter - lengthBefore; // determine where we are between the 'before' and 'after' points
 
-			}
+			const segmentFraction = (targetArcLength - lengthBefore) / segmentLength; // add that fractional amount to t
 
-			// skin indices
+			const t = (i + segmentFraction) / (il - 1);
+			return t;
+		} // Returns a unit vector tangent at t
+		// In case any sub curve does not implement its tangent derivation,
+		// 2 points a small delta apart will be used to find its gradient
+		// which seems to give a reasonable approximation
 
-			var skinIndices = source.skinIndices;
 
-			for ( i = 0, il = skinIndices.length; i < il; i ++ ) {
+		getTangent(t, optionalTarget) {
+			const delta = 0.0001;
+			let t1 = t - delta;
+			let t2 = t + delta; // Capping in case of danger
 
-				this.skinIndices.push( skinIndices[ i ].clone() );
+			if (t1 < 0) t1 = 0;
+			if (t2 > 1) t2 = 1;
+			const pt1 = this.getPoint(t1);
+			const pt2 = this.getPoint(t2);
+			const tangent = optionalTarget || (pt1.isVector2 ? new Vector2() : new Vector3());
+			tangent.copy(pt2).sub(pt1).normalize();
+			return tangent;
+		}
 
-			}
+		getTangentAt(u, optionalTarget) {
+			const t = this.getUtoTmapping(u);
+			return this.getTangent(t, optionalTarget);
+		}
 
-			// line distances
+		computeFrenetFrames(segments, closed) {
+			// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf
+			const normal = new Vector3();
+			const tangents = [];
+			const normals = [];
+			const binormals = [];
+			const vec = new Vector3();
+			const mat = new Matrix4(); // compute the tangent vectors for each segment on the curve
+
+			for (let i = 0; i <= segments; i++) {
+				const u = i / segments;
+				tangents[i] = this.getTangentAt(u, new Vector3());
+				tangents[i].normalize();
+			} // select an initial normal vector perpendicular to the first tangent vector,
+			// and in the direction of the minimum tangent xyz component
 
-			var lineDistances = source.lineDistances;
 
-			for ( i = 0, il = lineDistances.length; i < il; i ++ ) {
+			normals[0] = new Vector3();
+			binormals[0] = new Vector3();
+			let min = Number.MAX_VALUE;
+			const tx = Math.abs(tangents[0].x);
+			const ty = Math.abs(tangents[0].y);
+			const tz = Math.abs(tangents[0].z);
 
-				this.lineDistances.push( lineDistances[ i ] );
+			if (tx <= min) {
+				min = tx;
+				normal.set(1, 0, 0);
+			}
 
+			if (ty <= min) {
+				min = ty;
+				normal.set(0, 1, 0);
 			}
 
-			// bounding box
+			if (tz <= min) {
+				normal.set(0, 0, 1);
+			}
 
-			var boundingBox = source.boundingBox;
+			vec.crossVectors(tangents[0], normal).normalize();
+			normals[0].crossVectors(tangents[0], vec);
+			binormals[0].crossVectors(tangents[0], normals[0]); // compute the slowly-varying normal and binormal vectors for each segment on the curve
 
-			if ( boundingBox !== null ) {
+			for (let i = 1; i <= segments; i++) {
+				normals[i] = normals[i - 1].clone();
+				binormals[i] = binormals[i - 1].clone();
+				vec.crossVectors(tangents[i - 1], tangents[i]);
 
-				this.boundingBox = boundingBox.clone();
+				if (vec.length() > Number.EPSILON) {
+					vec.normalize();
+					const theta = Math.acos(clamp(tangents[i - 1].dot(tangents[i]), -1, 1)); // clamp for floating pt errors
 
-			}
+					normals[i].applyMatrix4(mat.makeRotationAxis(vec, theta));
+				}
 
-			// bounding sphere
+				binormals[i].crossVectors(tangents[i], normals[i]);
+			} // if the curve is closed, postprocess the vectors so the first and last normal vectors are the same
 
-			var boundingSphere = source.boundingSphere;
 
-			if ( boundingSphere !== null ) {
+			if (closed === true) {
+				let theta = Math.acos(clamp(normals[0].dot(normals[segments]), -1, 1));
+				theta /= segments;
 
-				this.boundingSphere = boundingSphere.clone();
+				if (tangents[0].dot(vec.crossVectors(normals[0], normals[segments])) > 0) {
+					theta = -theta;
+				}
 
+				for (let i = 1; i <= segments; i++) {
+					// twist a little...
+					normals[i].applyMatrix4(mat.makeRotationAxis(tangents[i], theta * i));
+					binormals[i].crossVectors(tangents[i], normals[i]);
+				}
 			}
 
-			// update flags
+			return {
+				tangents: tangents,
+				normals: normals,
+				binormals: binormals
+			};
+		}
 
-			this.elementsNeedUpdate = source.elementsNeedUpdate;
-			this.verticesNeedUpdate = source.verticesNeedUpdate;
-			this.uvsNeedUpdate = source.uvsNeedUpdate;
-			this.normalsNeedUpdate = source.normalsNeedUpdate;
-			this.colorsNeedUpdate = source.colorsNeedUpdate;
-			this.lineDistancesNeedUpdate = source.lineDistancesNeedUpdate;
-			this.groupsNeedUpdate = source.groupsNeedUpdate;
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
+		copy(source) {
+			this.arcLengthDivisions = source.arcLengthDivisions;
 			return this;
+		}
 
-		},
+		toJSON() {
+			const data = {
+				metadata: {
+					version: 4.5,
+					type: 'Curve',
+					generator: 'Curve.toJSON'
+				}
+			};
+			data.arcLengthDivisions = this.arcLengthDivisions;
+			data.type = this.type;
+			return data;
+		}
 
-		dispose: function () {
+		fromJSON(json) {
+			this.arcLengthDivisions = json.arcLengthDivisions;
+			return this;
+		}
 
-			this.dispatchEvent( { type: 'dispose' } );
+	}
 
+	class EllipseCurve extends Curve {
+		constructor(aX = 0, aY = 0, xRadius = 1, yRadius = 1, aStartAngle = 0, aEndAngle = Math.PI * 2, aClockwise = false, aRotation = 0) {
+			super();
+			this.type = 'EllipseCurve';
+			this.aX = aX;
+			this.aY = aY;
+			this.xRadius = xRadius;
+			this.yRadius = yRadius;
+			this.aStartAngle = aStartAngle;
+			this.aEndAngle = aEndAngle;
+			this.aClockwise = aClockwise;
+			this.aRotation = aRotation;
 		}
 
-	} );
+		getPoint(t, optionalTarget) {
+			const point = optionalTarget || new Vector2();
+			const twoPi = Math.PI * 2;
+			let deltaAngle = this.aEndAngle - this.aStartAngle;
+			const samePoints = Math.abs(deltaAngle) < Number.EPSILON; // ensures that deltaAngle is 0 .. 2 PI
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+			while (deltaAngle < 0) deltaAngle += twoPi;
 
-	function BufferAttribute( array, itemSize, normalized ) {
+			while (deltaAngle > twoPi) deltaAngle -= twoPi;
 
-		if ( Array.isArray( array ) ) {
+			if (deltaAngle < Number.EPSILON) {
+				if (samePoints) {
+					deltaAngle = 0;
+				} else {
+					deltaAngle = twoPi;
+				}
+			}
 
-			throw new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );
+			if (this.aClockwise === true && !samePoints) {
+				if (deltaAngle === twoPi) {
+					deltaAngle = -twoPi;
+				} else {
+					deltaAngle = deltaAngle - twoPi;
+				}
+			}
 
-		}
+			const angle = this.aStartAngle + t * deltaAngle;
+			let x = this.aX + this.xRadius * Math.cos(angle);
+			let y = this.aY + this.yRadius * Math.sin(angle);
 
-		this.name = '';
+			if (this.aRotation !== 0) {
+				const cos = Math.cos(this.aRotation);
+				const sin = Math.sin(this.aRotation);
+				const tx = x - this.aX;
+				const ty = y - this.aY; // Rotate the point about the center of the ellipse.
 
-		this.array = array;
-		this.itemSize = itemSize;
-		this.count = array !== undefined ? array.length / itemSize : 0;
-		this.normalized = normalized === true;
+				x = tx * cos - ty * sin + this.aX;
+				y = tx * sin + ty * cos + this.aY;
+			}
 
-		this.dynamic = false;
-		this.updateRange = { offset: 0, count: - 1 };
+			return point.set(x, y);
+		}
 
-		this.version = 0;
+		copy(source) {
+			super.copy(source);
+			this.aX = source.aX;
+			this.aY = source.aY;
+			this.xRadius = source.xRadius;
+			this.yRadius = source.yRadius;
+			this.aStartAngle = source.aStartAngle;
+			this.aEndAngle = source.aEndAngle;
+			this.aClockwise = source.aClockwise;
+			this.aRotation = source.aRotation;
+			return this;
+		}
 
-	}
+		toJSON() {
+			const data = super.toJSON();
+			data.aX = this.aX;
+			data.aY = this.aY;
+			data.xRadius = this.xRadius;
+			data.yRadius = this.yRadius;
+			data.aStartAngle = this.aStartAngle;
+			data.aEndAngle = this.aEndAngle;
+			data.aClockwise = this.aClockwise;
+			data.aRotation = this.aRotation;
+			return data;
+		}
 
-	Object.defineProperty( BufferAttribute.prototype, 'needsUpdate', {
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.aX = json.aX;
+			this.aY = json.aY;
+			this.xRadius = json.xRadius;
+			this.yRadius = json.yRadius;
+			this.aStartAngle = json.aStartAngle;
+			this.aEndAngle = json.aEndAngle;
+			this.aClockwise = json.aClockwise;
+			this.aRotation = json.aRotation;
+			return this;
+		}
 
-		set: function ( value ) {
+	}
 
-			if ( value === true ) this.version ++;
+	EllipseCurve.prototype.isEllipseCurve = true;
 
+	class ArcCurve extends EllipseCurve {
+		constructor(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
+			super(aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise);
+			this.type = 'ArcCurve';
 		}
 
-	} );
-
-	Object.assign( BufferAttribute.prototype, {
+	}
 
-		isBufferAttribute: true,
+	ArcCurve.prototype.isArcCurve = true;
 
-		onUploadCallback: function () {},
+	/**
+	 * Centripetal CatmullRom Curve - which is useful for avoiding
+	 * cusps and self-intersections in non-uniform catmull rom curves.
+	 * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
+	 *
+	 * curve.type accepts centripetal(default), chordal and catmullrom
+	 * curve.tension is used for catmullrom which defaults to 0.5
+	 */
 
-		setArray: function ( array ) {
+	/*
+	Based on an optimized c++ solution in
+	 - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/
+	 - http://ideone.com/NoEbVM
 
-			if ( Array.isArray( array ) ) {
+	This CubicPoly class could be used for reusing some variables and calculations,
+	but for three.js curve use, it could be possible inlined and flatten into a single function call
+	which can be placed in CurveUtils.
+	*/
 
-				throw new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );
+	function CubicPoly() {
+		let c0 = 0,
+				c1 = 0,
+				c2 = 0,
+				c3 = 0;
+		/*
+		 * Compute coefficients for a cubic polynomial
+		 *	 p(s) = c0 + c1*s + c2*s^2 + c3*s^3
+		 * such that
+		 *	 p(0) = x0, p(1) = x1
+		 *	and
+		 *	 p'(0) = t0, p'(1) = t1.
+		 */
 
-			}
+		function init(x0, x1, t0, t1) {
+			c0 = x0;
+			c1 = t0;
+			c2 = -3 * x0 + 3 * x1 - 2 * t0 - t1;
+			c3 = 2 * x0 - 2 * x1 + t0 + t1;
+		}
 
-			this.count = array !== undefined ? array.length / this.itemSize : 0;
-			this.array = array;
+		return {
+			initCatmullRom: function (x0, x1, x2, x3, tension) {
+				init(x1, x2, tension * (x2 - x0), tension * (x3 - x1));
+			},
+			initNonuniformCatmullRom: function (x0, x1, x2, x3, dt0, dt1, dt2) {
+				// compute tangents when parameterized in [t1,t2]
+				let t1 = (x1 - x0) / dt0 - (x2 - x0) / (dt0 + dt1) + (x2 - x1) / dt1;
+				let t2 = (x2 - x1) / dt1 - (x3 - x1) / (dt1 + dt2) + (x3 - x2) / dt2; // rescale tangents for parametrization in [0,1]
 
-		},
+				t1 *= dt1;
+				t2 *= dt1;
+				init(x1, x2, t1, t2);
+			},
+			calc: function (t) {
+				const t2 = t * t;
+				const t3 = t2 * t;
+				return c0 + c1 * t + c2 * t2 + c3 * t3;
+			}
+		};
+	} //
 
-		setDynamic: function ( value ) {
 
-			this.dynamic = value;
+	const tmp = new Vector3();
+	const px = new CubicPoly(),
+				py = new CubicPoly(),
+				pz = new CubicPoly();
 
-			return this;
+	class CatmullRomCurve3 extends Curve {
+		constructor(points = [], closed = false, curveType = 'centripetal', tension = 0.5) {
+			super();
+			this.type = 'CatmullRomCurve3';
+			this.points = points;
+			this.closed = closed;
+			this.curveType = curveType;
+			this.tension = tension;
+		}
 
-		},
+		getPoint(t, optionalTarget = new Vector3()) {
+			const point = optionalTarget;
+			const points = this.points;
+			const l = points.length;
+			const p = (l - (this.closed ? 0 : 1)) * t;
+			let intPoint = Math.floor(p);
+			let weight = p - intPoint;
 
-		copy: function ( source ) {
+			if (this.closed) {
+				intPoint += intPoint > 0 ? 0 : (Math.floor(Math.abs(intPoint) / l) + 1) * l;
+			} else if (weight === 0 && intPoint === l - 1) {
+				intPoint = l - 2;
+				weight = 1;
+			}
 
-			this.array = new source.array.constructor( source.array );
-			this.itemSize = source.itemSize;
-			this.count = source.count;
-			this.normalized = source.normalized;
+			let p0, p3; // 4 points (p1 & p2 defined below)
 
-			this.dynamic = source.dynamic;
+			if (this.closed || intPoint > 0) {
+				p0 = points[(intPoint - 1) % l];
+			} else {
+				// extrapolate first point
+				tmp.subVectors(points[0], points[1]).add(points[0]);
+				p0 = tmp;
+			}
 
-			return this;
+			const p1 = points[intPoint % l];
+			const p2 = points[(intPoint + 1) % l];
 
-		},
+			if (this.closed || intPoint + 2 < l) {
+				p3 = points[(intPoint + 2) % l];
+			} else {
+				// extrapolate last point
+				tmp.subVectors(points[l - 1], points[l - 2]).add(points[l - 1]);
+				p3 = tmp;
+			}
 
-		copyAt: function ( index1, attribute, index2 ) {
+			if (this.curveType === 'centripetal' || this.curveType === 'chordal') {
+				// init Centripetal / Chordal Catmull-Rom
+				const pow = this.curveType === 'chordal' ? 0.5 : 0.25;
+				let dt0 = Math.pow(p0.distanceToSquared(p1), pow);
+				let dt1 = Math.pow(p1.distanceToSquared(p2), pow);
+				let dt2 = Math.pow(p2.distanceToSquared(p3), pow); // safety check for repeated points
 
-			index1 *= this.itemSize;
-			index2 *= attribute.itemSize;
+				if (dt1 < 1e-4) dt1 = 1.0;
+				if (dt0 < 1e-4) dt0 = dt1;
+				if (dt2 < 1e-4) dt2 = dt1;
+				px.initNonuniformCatmullRom(p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2);
+				py.initNonuniformCatmullRom(p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2);
+				pz.initNonuniformCatmullRom(p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2);
+			} else if (this.curveType === 'catmullrom') {
+				px.initCatmullRom(p0.x, p1.x, p2.x, p3.x, this.tension);
+				py.initCatmullRom(p0.y, p1.y, p2.y, p3.y, this.tension);
+				pz.initCatmullRom(p0.z, p1.z, p2.z, p3.z, this.tension);
+			}
 
-			for ( var i = 0, l = this.itemSize; i < l; i ++ ) {
+			point.set(px.calc(weight), py.calc(weight), pz.calc(weight));
+			return point;
+		}
 
-				this.array[ index1 + i ] = attribute.array[ index2 + i ];
+		copy(source) {
+			super.copy(source);
+			this.points = [];
 
+			for (let i = 0, l = source.points.length; i < l; i++) {
+				const point = source.points[i];
+				this.points.push(point.clone());
 			}
 
+			this.closed = source.closed;
+			this.curveType = source.curveType;
+			this.tension = source.tension;
 			return this;
+		}
 
-		},
-
-		copyArray: function ( array ) {
+		toJSON() {
+			const data = super.toJSON();
+			data.points = [];
 
-			this.array.set( array );
+			for (let i = 0, l = this.points.length; i < l; i++) {
+				const point = this.points[i];
+				data.points.push(point.toArray());
+			}
 
-			return this;
+			data.closed = this.closed;
+			data.curveType = this.curveType;
+			data.tension = this.tension;
+			return data;
+		}
 
-		},
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.points = [];
 
-		copyColorsArray: function ( colors ) {
+			for (let i = 0, l = json.points.length; i < l; i++) {
+				const point = json.points[i];
+				this.points.push(new Vector3().fromArray(point));
+			}
 
-			var array = this.array, offset = 0;
+			this.closed = json.closed;
+			this.curveType = json.curveType;
+			this.tension = json.tension;
+			return this;
+		}
 
-			for ( var i = 0, l = colors.length; i < l; i ++ ) {
+	}
 
-				var color = colors[ i ];
+	CatmullRomCurve3.prototype.isCatmullRomCurve3 = true;
 
-				if ( color === undefined ) {
+	/**
+	 * Bezier Curves formulas obtained from
+	 * http://en.wikipedia.org/wiki/Bézier_curve
+	 */
+	function CatmullRom(t, p0, p1, p2, p3) {
+		const v0 = (p2 - p0) * 0.5;
+		const v1 = (p3 - p1) * 0.5;
+		const t2 = t * t;
+		const t3 = t * t2;
+		return (2 * p1 - 2 * p2 + v0 + v1) * t3 + (-3 * p1 + 3 * p2 - 2 * v0 - v1) * t2 + v0 * t + p1;
+	} //
 
-					console.warn( 'THREE.BufferAttribute.copyColorsArray(): color is undefined', i );
-					color = new Color();
 
-				}
+	function QuadraticBezierP0(t, p) {
+		const k = 1 - t;
+		return k * k * p;
+	}
 
-				array[ offset ++ ] = color.r;
-				array[ offset ++ ] = color.g;
-				array[ offset ++ ] = color.b;
+	function QuadraticBezierP1(t, p) {
+		return 2 * (1 - t) * t * p;
+	}
 
-			}
+	function QuadraticBezierP2(t, p) {
+		return t * t * p;
+	}
 
-			return this;
+	function QuadraticBezier(t, p0, p1, p2) {
+		return QuadraticBezierP0(t, p0) + QuadraticBezierP1(t, p1) + QuadraticBezierP2(t, p2);
+	} //
 
-		},
 
-		copyVector2sArray: function ( vectors ) {
+	function CubicBezierP0(t, p) {
+		const k = 1 - t;
+		return k * k * k * p;
+	}
 
-			var array = this.array, offset = 0;
+	function CubicBezierP1(t, p) {
+		const k = 1 - t;
+		return 3 * k * k * t * p;
+	}
 
-			for ( var i = 0, l = vectors.length; i < l; i ++ ) {
+	function CubicBezierP2(t, p) {
+		return 3 * (1 - t) * t * t * p;
+	}
 
-				var vector = vectors[ i ];
+	function CubicBezierP3(t, p) {
+		return t * t * t * p;
+	}
 
-				if ( vector === undefined ) {
+	function CubicBezier(t, p0, p1, p2, p3) {
+		return CubicBezierP0(t, p0) + CubicBezierP1(t, p1) + CubicBezierP2(t, p2) + CubicBezierP3(t, p3);
+	}
 
-					console.warn( 'THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i );
-					vector = new Vector2();
+	class CubicBezierCurve extends Curve {
+		constructor(v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2()) {
+			super();
+			this.type = 'CubicBezierCurve';
+			this.v0 = v0;
+			this.v1 = v1;
+			this.v2 = v2;
+			this.v3 = v3;
+		}
 
-				}
+		getPoint(t, optionalTarget = new Vector2()) {
+			const point = optionalTarget;
+			const v0 = this.v0,
+						v1 = this.v1,
+						v2 = this.v2,
+						v3 = this.v3;
+			point.set(CubicBezier(t, v0.x, v1.x, v2.x, v3.x), CubicBezier(t, v0.y, v1.y, v2.y, v3.y));
+			return point;
+		}
 
-				array[ offset ++ ] = vector.x;
-				array[ offset ++ ] = vector.y;
+		copy(source) {
+			super.copy(source);
+			this.v0.copy(source.v0);
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			this.v3.copy(source.v3);
+			return this;
+		}
 
-			}
+		toJSON() {
+			const data = super.toJSON();
+			data.v0 = this.v0.toArray();
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			data.v3 = this.v3.toArray();
+			return data;
+		}
 
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.v0.fromArray(json.v0);
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
+			this.v3.fromArray(json.v3);
 			return this;
+		}
 
-		},
-
-		copyVector3sArray: function ( vectors ) {
+	}
 
-			var array = this.array, offset = 0;
+	CubicBezierCurve.prototype.isCubicBezierCurve = true;
 
-			for ( var i = 0, l = vectors.length; i < l; i ++ ) {
+	class CubicBezierCurve3 extends Curve {
+		constructor(v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3()) {
+			super();
+			this.type = 'CubicBezierCurve3';
+			this.v0 = v0;
+			this.v1 = v1;
+			this.v2 = v2;
+			this.v3 = v3;
+		}
+
+		getPoint(t, optionalTarget = new Vector3()) {
+			const point = optionalTarget;
+			const v0 = this.v0,
+						v1 = this.v1,
+						v2 = this.v2,
+						v3 = this.v3;
+			point.set(CubicBezier(t, v0.x, v1.x, v2.x, v3.x), CubicBezier(t, v0.y, v1.y, v2.y, v3.y), CubicBezier(t, v0.z, v1.z, v2.z, v3.z));
+			return point;
+		}
+
+		copy(source) {
+			super.copy(source);
+			this.v0.copy(source.v0);
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			this.v3.copy(source.v3);
+			return this;
+		}
+
+		toJSON() {
+			const data = super.toJSON();
+			data.v0 = this.v0.toArray();
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			data.v3 = this.v3.toArray();
+			return data;
+		}
 
-				var vector = vectors[ i ];
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.v0.fromArray(json.v0);
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
+			this.v3.fromArray(json.v3);
+			return this;
+		}
 
-				if ( vector === undefined ) {
+	}
 
-					console.warn( 'THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i );
-					vector = new Vector3();
+	CubicBezierCurve3.prototype.isCubicBezierCurve3 = true;
 
-				}
+	class LineCurve extends Curve {
+		constructor(v1 = new Vector2(), v2 = new Vector2()) {
+			super();
+			this.type = 'LineCurve';
+			this.v1 = v1;
+			this.v2 = v2;
+		}
 
-				array[ offset ++ ] = vector.x;
-				array[ offset ++ ] = vector.y;
-				array[ offset ++ ] = vector.z;
+		getPoint(t, optionalTarget = new Vector2()) {
+			const point = optionalTarget;
 
+			if (t === 1) {
+				point.copy(this.v2);
+			} else {
+				point.copy(this.v2).sub(this.v1);
+				point.multiplyScalar(t).add(this.v1);
 			}
 
-			return this;
-
-		},
+			return point;
+		} // Line curve is linear, so we can overwrite default getPointAt
 
-		copyVector4sArray: function ( vectors ) {
 
-			var array = this.array, offset = 0;
+		getPointAt(u, optionalTarget) {
+			return this.getPoint(u, optionalTarget);
+		}
 
-			for ( var i = 0, l = vectors.length; i < l; i ++ ) {
+		getTangent(t, optionalTarget) {
+			const tangent = optionalTarget || new Vector2();
+			tangent.copy(this.v2).sub(this.v1).normalize();
+			return tangent;
+		}
 
-				var vector = vectors[ i ];
+		copy(source) {
+			super.copy(source);
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			return this;
+		}
 
-				if ( vector === undefined ) {
+		toJSON() {
+			const data = super.toJSON();
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			return data;
+		}
 
-					console.warn( 'THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i );
-					vector = new Vector4();
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
+			return this;
+		}
 
-				}
+	}
 
-				array[ offset ++ ] = vector.x;
-				array[ offset ++ ] = vector.y;
-				array[ offset ++ ] = vector.z;
-				array[ offset ++ ] = vector.w;
+	LineCurve.prototype.isLineCurve = true;
 
-			}
+	class LineCurve3 extends Curve {
+		constructor(v1 = new Vector3(), v2 = new Vector3()) {
+			super();
+			this.type = 'LineCurve3';
+			this.isLineCurve3 = true;
+			this.v1 = v1;
+			this.v2 = v2;
+		}
 
-			return this;
+		getPoint(t, optionalTarget = new Vector3()) {
+			const point = optionalTarget;
 
-		},
+			if (t === 1) {
+				point.copy(this.v2);
+			} else {
+				point.copy(this.v2).sub(this.v1);
+				point.multiplyScalar(t).add(this.v1);
+			}
 
-		set: function ( value, offset ) {
+			return point;
+		} // Line curve is linear, so we can overwrite default getPointAt
 
-			if ( offset === undefined ) offset = 0;
 
-			this.array.set( value, offset );
+		getPointAt(u, optionalTarget) {
+			return this.getPoint(u, optionalTarget);
+		}
 
+		copy(source) {
+			super.copy(source);
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
 			return this;
+		}
 
-		},
+		toJSON() {
+			const data = super.toJSON();
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			return data;
+		}
+
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
+			return this;
+		}
 
-		getX: function ( index ) {
+	}
 
-			return this.array[ index * this.itemSize ];
+	class QuadraticBezierCurve extends Curve {
+		constructor(v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2()) {
+			super();
+			this.type = 'QuadraticBezierCurve';
+			this.v0 = v0;
+			this.v1 = v1;
+			this.v2 = v2;
+		}
 
-		},
+		getPoint(t, optionalTarget = new Vector2()) {
+			const point = optionalTarget;
+			const v0 = this.v0,
+						v1 = this.v1,
+						v2 = this.v2;
+			point.set(QuadraticBezier(t, v0.x, v1.x, v2.x), QuadraticBezier(t, v0.y, v1.y, v2.y));
+			return point;
+		}
 
-		setX: function ( index, x ) {
+		copy(source) {
+			super.copy(source);
+			this.v0.copy(source.v0);
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			return this;
+		}
 
-			this.array[ index * this.itemSize ] = x;
+		toJSON() {
+			const data = super.toJSON();
+			data.v0 = this.v0.toArray();
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			return data;
+		}
 
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.v0.fromArray(json.v0);
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
 			return this;
+		}
 
-		},
+	}
 
-		getY: function ( index ) {
+	QuadraticBezierCurve.prototype.isQuadraticBezierCurve = true;
 
-			return this.array[ index * this.itemSize + 1 ];
+	class QuadraticBezierCurve3 extends Curve {
+		constructor(v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3()) {
+			super();
+			this.type = 'QuadraticBezierCurve3';
+			this.v0 = v0;
+			this.v1 = v1;
+			this.v2 = v2;
+		}
 
-		},
+		getPoint(t, optionalTarget = new Vector3()) {
+			const point = optionalTarget;
+			const v0 = this.v0,
+						v1 = this.v1,
+						v2 = this.v2;
+			point.set(QuadraticBezier(t, v0.x, v1.x, v2.x), QuadraticBezier(t, v0.y, v1.y, v2.y), QuadraticBezier(t, v0.z, v1.z, v2.z));
+			return point;
+		}
 
-		setY: function ( index, y ) {
+		copy(source) {
+			super.copy(source);
+			this.v0.copy(source.v0);
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			return this;
+		}
 
-			this.array[ index * this.itemSize + 1 ] = y;
+		toJSON() {
+			const data = super.toJSON();
+			data.v0 = this.v0.toArray();
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			return data;
+		}
 
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.v0.fromArray(json.v0);
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
 			return this;
+		}
 
-		},
+	}
 
-		getZ: function ( index ) {
+	QuadraticBezierCurve3.prototype.isQuadraticBezierCurve3 = true;
 
-			return this.array[ index * this.itemSize + 2 ];
+	class SplineCurve extends Curve {
+		constructor(points = []) {
+			super();
+			this.type = 'SplineCurve';
+			this.points = points;
+		}
 
-		},
+		getPoint(t, optionalTarget = new Vector2()) {
+			const point = optionalTarget;
+			const points = this.points;
+			const p = (points.length - 1) * t;
+			const intPoint = Math.floor(p);
+			const weight = p - intPoint;
+			const p0 = points[intPoint === 0 ? intPoint : intPoint - 1];
+			const p1 = points[intPoint];
+			const p2 = points[intPoint > points.length - 2 ? points.length - 1 : intPoint + 1];
+			const p3 = points[intPoint > points.length - 3 ? points.length - 1 : intPoint + 2];
+			point.set(CatmullRom(weight, p0.x, p1.x, p2.x, p3.x), CatmullRom(weight, p0.y, p1.y, p2.y, p3.y));
+			return point;
+		}
 
-		setZ: function ( index, z ) {
+		copy(source) {
+			super.copy(source);
+			this.points = [];
 
-			this.array[ index * this.itemSize + 2 ] = z;
+			for (let i = 0, l = source.points.length; i < l; i++) {
+				const point = source.points[i];
+				this.points.push(point.clone());
+			}
 
 			return this;
+		}
 
-		},
-
-		getW: function ( index ) {
+		toJSON() {
+			const data = super.toJSON();
+			data.points = [];
 
-			return this.array[ index * this.itemSize + 3 ];
+			for (let i = 0, l = this.points.length; i < l; i++) {
+				const point = this.points[i];
+				data.points.push(point.toArray());
+			}
 
-		},
+			return data;
+		}
 
-		setW: function ( index, w ) {
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.points = [];
 
-			this.array[ index * this.itemSize + 3 ] = w;
+			for (let i = 0, l = json.points.length; i < l; i++) {
+				const point = json.points[i];
+				this.points.push(new Vector2().fromArray(point));
+			}
 
 			return this;
+		}
 
-		},
+	}
 
-		setXY: function ( index, x, y ) {
+	SplineCurve.prototype.isSplineCurve = true;
 
-			index *= this.itemSize;
+	var Curves = /*#__PURE__*/Object.freeze({
+		__proto__: null,
+		ArcCurve: ArcCurve,
+		CatmullRomCurve3: CatmullRomCurve3,
+		CubicBezierCurve: CubicBezierCurve,
+		CubicBezierCurve3: CubicBezierCurve3,
+		EllipseCurve: EllipseCurve,
+		LineCurve: LineCurve,
+		LineCurve3: LineCurve3,
+		QuadraticBezierCurve: QuadraticBezierCurve,
+		QuadraticBezierCurve3: QuadraticBezierCurve3,
+		SplineCurve: SplineCurve
+	});
 
-			this.array[ index + 0 ] = x;
-			this.array[ index + 1 ] = y;
+	/**
+	 * Port from https://github.com/mapbox/earcut (v2.2.2)
+	 */
+	const Earcut = {
+		triangulate: function (data, holeIndices, dim = 2) {
+			const hasHoles = holeIndices && holeIndices.length;
+			const outerLen = hasHoles ? holeIndices[0] * dim : data.length;
+			let outerNode = linkedList(data, 0, outerLen, dim, true);
+			const triangles = [];
+			if (!outerNode || outerNode.next === outerNode.prev) return triangles;
+			let minX, minY, maxX, maxY, x, y, invSize;
+			if (hasHoles) outerNode = eliminateHoles(data, holeIndices, outerNode, dim); // if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox
+
+			if (data.length > 80 * dim) {
+				minX = maxX = data[0];
+				minY = maxY = data[1];
+
+				for (let i = dim; i < outerLen; i += dim) {
+					x = data[i];
+					y = data[i + 1];
+					if (x < minX) minX = x;
+					if (y < minY) minY = y;
+					if (x > maxX) maxX = x;
+					if (y > maxY) maxY = y;
+				} // minX, minY and invSize are later used to transform coords into integers for z-order calculation
+
+
+				invSize = Math.max(maxX - minX, maxY - minY);
+				invSize = invSize !== 0 ? 1 / invSize : 0;
+			}
 
-			return this;
+			earcutLinked(outerNode, triangles, dim, minX, minY, invSize);
+			return triangles;
+		}
+	}; // create a circular doubly linked list from polygon points in the specified winding order
 
-		},
+	function linkedList(data, start, end, dim, clockwise) {
+		let i, last;
 
-		setXYZ: function ( index, x, y, z ) {
+		if (clockwise === signedArea(data, start, end, dim) > 0) {
+			for (i = start; i < end; i += dim) last = insertNode(i, data[i], data[i + 1], last);
+		} else {
+			for (i = end - dim; i >= start; i -= dim) last = insertNode(i, data[i], data[i + 1], last);
+		}
 
-			index *= this.itemSize;
+		if (last && equals(last, last.next)) {
+			removeNode(last);
+			last = last.next;
+		}
 
-			this.array[ index + 0 ] = x;
-			this.array[ index + 1 ] = y;
-			this.array[ index + 2 ] = z;
+		return last;
+	} // eliminate colinear or duplicate points
 
-			return this;
 
-		},
+	function filterPoints(start, end) {
+		if (!start) return start;
+		if (!end) end = start;
+		let p = start,
+				again;
 
-		setXYZW: function ( index, x, y, z, w ) {
+		do {
+			again = false;
 
-			index *= this.itemSize;
+			if (!p.steiner && (equals(p, p.next) || area(p.prev, p, p.next) === 0)) {
+				removeNode(p);
+				p = end = p.prev;
+				if (p === p.next) break;
+				again = true;
+			} else {
+				p = p.next;
+			}
+		} while (again || p !== end);
 
-			this.array[ index + 0 ] = x;
-			this.array[ index + 1 ] = y;
-			this.array[ index + 2 ] = z;
-			this.array[ index + 3 ] = w;
+		return end;
+	} // main ear slicing loop which triangulates a polygon (given as a linked list)
 
-			return this;
 
-		},
+	function earcutLinked(ear, triangles, dim, minX, minY, invSize, pass) {
+		if (!ear) return; // interlink polygon nodes in z-order
 
-		onUpload: function ( callback ) {
+		if (!pass && invSize) indexCurve(ear, minX, minY, invSize);
+		let stop = ear,
+				prev,
+				next; // iterate through ears, slicing them one by one
 
-			this.onUploadCallback = callback;
+		while (ear.prev !== ear.next) {
+			prev = ear.prev;
+			next = ear.next;
 
-			return this;
+			if (invSize ? isEarHashed(ear, minX, minY, invSize) : isEar(ear)) {
+				// cut off the triangle
+				triangles.push(prev.i / dim);
+				triangles.push(ear.i / dim);
+				triangles.push(next.i / dim);
+				removeNode(ear); // skipping the next vertex leads to less sliver triangles
 
-		},
+				ear = next.next;
+				stop = next.next;
+				continue;
+			}
 
-		clone: function () {
+			ear = next; // if we looped through the whole remaining polygon and can't find any more ears
 
-			return new this.constructor( this.array, this.itemSize ).copy( this );
+			if (ear === stop) {
+				// try filtering points and slicing again
+				if (!pass) {
+					earcutLinked(filterPoints(ear), triangles, dim, minX, minY, invSize, 1); // if this didn't work, try curing all small self-intersections locally
+				} else if (pass === 1) {
+					ear = cureLocalIntersections(filterPoints(ear), triangles, dim);
+					earcutLinked(ear, triangles, dim, minX, minY, invSize, 2); // as a last resort, try splitting the remaining polygon into two
+				} else if (pass === 2) {
+					splitEarcut(ear, triangles, dim, minX, minY, invSize);
+				}
 
+				break;
+			}
 		}
+	} // check whether a polygon node forms a valid ear with adjacent nodes
 
-	} );
 
-	//
+	function isEar(ear) {
+		const a = ear.prev,
+					b = ear,
+					c = ear.next;
+		if (area(a, b, c) >= 0) return false; // reflex, can't be an ear
+		// now make sure we don't have other points inside the potential ear
 
-	function Int8BufferAttribute( array, itemSize, normalized ) {
+		let p = ear.next.next;
 
-		BufferAttribute.call( this, new Int8Array( array ), itemSize, normalized );
+		while (p !== ear.prev) {
+			if (pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
+			p = p.next;
+		}
 
+		return true;
 	}
 
-	Int8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
-	Int8BufferAttribute.prototype.constructor = Int8BufferAttribute;
+	function isEarHashed(ear, minX, minY, invSize) {
+		const a = ear.prev,
+					b = ear,
+					c = ear.next;
+		if (area(a, b, c) >= 0) return false; // reflex, can't be an ear
+		// triangle bbox; min & max are calculated like this for speed
 
+		const minTX = a.x < b.x ? a.x < c.x ? a.x : c.x : b.x < c.x ? b.x : c.x,
+					minTY = a.y < b.y ? a.y < c.y ? a.y : c.y : b.y < c.y ? b.y : c.y,
+					maxTX = a.x > b.x ? a.x > c.x ? a.x : c.x : b.x > c.x ? b.x : c.x,
+					maxTY = a.y > b.y ? a.y > c.y ? a.y : c.y : b.y > c.y ? b.y : c.y; // z-order range for the current triangle bbox;
 
-	function Uint8BufferAttribute( array, itemSize, normalized ) {
+		const minZ = zOrder(minTX, minTY, minX, minY, invSize),
+					maxZ = zOrder(maxTX, maxTY, minX, minY, invSize);
+		let p = ear.prevZ,
+				n = ear.nextZ; // look for points inside the triangle in both directions
 
-		BufferAttribute.call( this, new Uint8Array( array ), itemSize, normalized );
+		while (p && p.z >= minZ && n && n.z <= maxZ) {
+			if (p !== ear.prev && p !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
+			p = p.prevZ;
+			if (n !== ear.prev && n !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;
+			n = n.nextZ;
+		} // look for remaining points in decreasing z-order
 
-	}
 
-	Uint8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
-	Uint8BufferAttribute.prototype.constructor = Uint8BufferAttribute;
+		while (p && p.z >= minZ) {
+			if (p !== ear.prev && p !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
+			p = p.prevZ;
+		} // look for remaining points in increasing z-order
 
 
-	function Uint8ClampedBufferAttribute( array, itemSize, normalized ) {
+		while (n && n.z <= maxZ) {
+			if (n !== ear.prev && n !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;
+			n = n.nextZ;
+		}
 
-		BufferAttribute.call( this, new Uint8ClampedArray( array ), itemSize, normalized );
+		return true;
+	} // go through all polygon nodes and cure small local self-intersections
 
-	}
 
-	Uint8ClampedBufferAttribute.prototype = Object.create( BufferAttribute.prototype );
-	Uint8ClampedBufferAttribute.prototype.constructor = Uint8ClampedBufferAttribute;
+	function cureLocalIntersections(start, triangles, dim) {
+		let p = start;
 
+		do {
+			const a = p.prev,
+						b = p.next.next;
 
-	function Int16BufferAttribute( array, itemSize, normalized ) {
+			if (!equals(a, b) && intersects(a, p, p.next, b) && locallyInside(a, b) && locallyInside(b, a)) {
+				triangles.push(a.i / dim);
+				triangles.push(p.i / dim);
+				triangles.push(b.i / dim); // remove two nodes involved
 
-		BufferAttribute.call( this, new Int16Array( array ), itemSize, normalized );
+				removeNode(p);
+				removeNode(p.next);
+				p = start = b;
+			}
 
-	}
+			p = p.next;
+		} while (p !== start);
 
-	Int16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
-	Int16BufferAttribute.prototype.constructor = Int16BufferAttribute;
+		return filterPoints(p);
+	} // try splitting polygon into two and triangulate them independently
 
 
-	function Uint16BufferAttribute( array, itemSize, normalized ) {
+	function splitEarcut(start, triangles, dim, minX, minY, invSize) {
+		// look for a valid diagonal that divides the polygon into two
+		let a = start;
 
-		BufferAttribute.call( this, new Uint16Array( array ), itemSize, normalized );
+		do {
+			let b = a.next.next;
 
-	}
+			while (b !== a.prev) {
+				if (a.i !== b.i && isValidDiagonal(a, b)) {
+					// split the polygon in two by the diagonal
+					let c = splitPolygon(a, b); // filter colinear points around the cuts
 
-	Uint16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
-	Uint16BufferAttribute.prototype.constructor = Uint16BufferAttribute;
+					a = filterPoints(a, a.next);
+					c = filterPoints(c, c.next); // run earcut on each half
 
+					earcutLinked(a, triangles, dim, minX, minY, invSize);
+					earcutLinked(c, triangles, dim, minX, minY, invSize);
+					return;
+				}
 
-	function Int32BufferAttribute( array, itemSize, normalized ) {
+				b = b.next;
+			}
 
-		BufferAttribute.call( this, new Int32Array( array ), itemSize, normalized );
+			a = a.next;
+		} while (a !== start);
+	} // link every hole into the outer loop, producing a single-ring polygon without holes
 
-	}
 
-	Int32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
-	Int32BufferAttribute.prototype.constructor = Int32BufferAttribute;
+	function eliminateHoles(data, holeIndices, outerNode, dim) {
+		const queue = [];
+		let i, len, start, end, list;
 
+		for (i = 0, len = holeIndices.length; i < len; i++) {
+			start = holeIndices[i] * dim;
+			end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;
+			list = linkedList(data, start, end, dim, false);
+			if (list === list.next) list.steiner = true;
+			queue.push(getLeftmost(list));
+		}
 
-	function Uint32BufferAttribute( array, itemSize, normalized ) {
+		queue.sort(compareX); // process holes from left to right
 
-		BufferAttribute.call( this, new Uint32Array( array ), itemSize, normalized );
+		for (i = 0; i < queue.length; i++) {
+			eliminateHole(queue[i], outerNode);
+			outerNode = filterPoints(outerNode, outerNode.next);
+		}
 
+		return outerNode;
 	}
 
-	Uint32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
-	Uint32BufferAttribute.prototype.constructor = Uint32BufferAttribute;
-
-
-	function Float32BufferAttribute( array, itemSize, normalized ) {
-
-		BufferAttribute.call( this, new Float32Array( array ), itemSize, normalized );
+	function compareX(a, b) {
+		return a.x - b.x;
+	} // find a bridge between vertices that connects hole with an outer ring and and link it
 
-	}
 
-	Float32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
-	Float32BufferAttribute.prototype.constructor = Float32BufferAttribute;
+	function eliminateHole(hole, outerNode) {
+		outerNode = findHoleBridge(hole, outerNode);
 
+		if (outerNode) {
+			const b = splitPolygon(outerNode, hole); // filter collinear points around the cuts
 
-	function Float64BufferAttribute( array, itemSize, normalized ) {
+			filterPoints(outerNode, outerNode.next);
+			filterPoints(b, b.next);
+		}
+	} // David Eberly's algorithm for finding a bridge between hole and outer polygon
 
-		BufferAttribute.call( this, new Float64Array( array ), itemSize, normalized );
 
-	}
+	function findHoleBridge(hole, outerNode) {
+		let p = outerNode;
+		const hx = hole.x;
+		const hy = hole.y;
+		let qx = -Infinity,
+				m; // find a segment intersected by a ray from the hole's leftmost point to the left;
+		// segment's endpoint with lesser x will be potential connection point
 
-	Float64BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
-	Float64BufferAttribute.prototype.constructor = Float64BufferAttribute;
+		do {
+			if (hy <= p.y && hy >= p.next.y && p.next.y !== p.y) {
+				const x = p.x + (hy - p.y) * (p.next.x - p.x) / (p.next.y - p.y);
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+				if (x <= hx && x > qx) {
+					qx = x;
 
-	function DirectGeometry() {
+					if (x === hx) {
+						if (hy === p.y) return p;
+						if (hy === p.next.y) return p.next;
+					}
 
-		this.vertices = [];
-		this.normals = [];
-		this.colors = [];
-		this.uvs = [];
-		this.uvs2 = [];
+					m = p.x < p.next.x ? p : p.next;
+				}
+			}
 
-		this.groups = [];
+			p = p.next;
+		} while (p !== outerNode);
 
-		this.morphTargets = {};
+		if (!m) return null;
+		if (hx === qx) return m; // hole touches outer segment; pick leftmost endpoint
+		// look for points inside the triangle of hole point, segment intersection and endpoint;
+		// if there are no points found, we have a valid connection;
+		// otherwise choose the point of the minimum angle with the ray as connection point
 
-		this.skinWeights = [];
-		this.skinIndices = [];
+		const stop = m,
+					mx = m.x,
+					my = m.y;
+		let tanMin = Infinity,
+				tan;
+		p = m;
 
-		// this.lineDistances = [];
+		do {
+			if (hx >= p.x && p.x >= mx && hx !== p.x && pointInTriangle(hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y)) {
+				tan = Math.abs(hy - p.y) / (hx - p.x); // tangential
 
-		this.boundingBox = null;
-		this.boundingSphere = null;
+				if (locallyInside(p, hole) && (tan < tanMin || tan === tanMin && (p.x > m.x || p.x === m.x && sectorContainsSector(m, p)))) {
+					m = p;
+					tanMin = tan;
+				}
+			}
 
-		// update flags
+			p = p.next;
+		} while (p !== stop);
 
-		this.verticesNeedUpdate = false;
-		this.normalsNeedUpdate = false;
-		this.colorsNeedUpdate = false;
-		this.uvsNeedUpdate = false;
-		this.groupsNeedUpdate = false;
+		return m;
+	} // whether sector in vertex m contains sector in vertex p in the same coordinates
 
-	}
 
-	Object.assign( DirectGeometry.prototype, {
+	function sectorContainsSector(m, p) {
+		return area(m.prev, m, p.prev) < 0 && area(p.next, m, m.next) < 0;
+	} // interlink polygon nodes in z-order
 
-		computeGroups: function ( geometry ) {
 
-			var group;
-			var groups = [];
-			var materialIndex = undefined;
+	function indexCurve(start, minX, minY, invSize) {
+		let p = start;
 
-			var faces = geometry.faces;
+		do {
+			if (p.z === null) p.z = zOrder(p.x, p.y, minX, minY, invSize);
+			p.prevZ = p.prev;
+			p.nextZ = p.next;
+			p = p.next;
+		} while (p !== start);
 
-			for ( var i = 0; i < faces.length; i ++ ) {
+		p.prevZ.nextZ = null;
+		p.prevZ = null;
+		sortLinked(p);
+	} // Simon Tatham's linked list merge sort algorithm
+	// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html
 
-				var face = faces[ i ];
 
-				// materials
+	function sortLinked(list) {
+		let i,
+				p,
+				q,
+				e,
+				tail,
+				numMerges,
+				pSize,
+				qSize,
+				inSize = 1;
 
-				if ( face.materialIndex !== materialIndex ) {
+		do {
+			p = list;
+			list = null;
+			tail = null;
+			numMerges = 0;
 
-					materialIndex = face.materialIndex;
+			while (p) {
+				numMerges++;
+				q = p;
+				pSize = 0;
 
-					if ( group !== undefined ) {
+				for (i = 0; i < inSize; i++) {
+					pSize++;
+					q = q.nextZ;
+					if (!q) break;
+				}
 
-						group.count = ( i * 3 ) - group.start;
-						groups.push( group );
+				qSize = inSize;
 
+				while (pSize > 0 || qSize > 0 && q) {
+					if (pSize !== 0 && (qSize === 0 || !q || p.z <= q.z)) {
+						e = p;
+						p = p.nextZ;
+						pSize--;
+					} else {
+						e = q;
+						q = q.nextZ;
+						qSize--;
 					}
 
-					group = {
-						start: i * 3,
-						materialIndex: materialIndex
-					};
-
+					if (tail) tail.nextZ = e;else list = e;
+					e.prevZ = tail;
+					tail = e;
 				}
 
+				p = q;
 			}
 
-			if ( group !== undefined ) {
+			tail.nextZ = null;
+			inSize *= 2;
+		} while (numMerges > 1);
 
-				group.count = ( i * 3 ) - group.start;
-				groups.push( group );
+		return list;
+	} // z-order of a point given coords and inverse of the longer side of data bbox
 
-			}
 
-			this.groups = groups;
+	function zOrder(x, y, minX, minY, invSize) {
+		// coords are transformed into non-negative 15-bit integer range
+		x = 32767 * (x - minX) * invSize;
+		y = 32767 * (y - minY) * invSize;
+		x = (x | x << 8) & 0x00FF00FF;
+		x = (x | x << 4) & 0x0F0F0F0F;
+		x = (x | x << 2) & 0x33333333;
+		x = (x | x << 1) & 0x55555555;
+		y = (y | y << 8) & 0x00FF00FF;
+		y = (y | y << 4) & 0x0F0F0F0F;
+		y = (y | y << 2) & 0x33333333;
+		y = (y | y << 1) & 0x55555555;
+		return x | y << 1;
+	} // find the leftmost node of a polygon ring
+
+
+	function getLeftmost(start) {
+		let p = start,
+				leftmost = start;
 
-		},
+		do {
+			if (p.x < leftmost.x || p.x === leftmost.x && p.y < leftmost.y) leftmost = p;
+			p = p.next;
+		} while (p !== start);
 
-		fromGeometry: function ( geometry ) {
+		return leftmost;
+	} // check if a point lies within a convex triangle
 
-			var faces = geometry.faces;
-			var vertices = geometry.vertices;
-			var faceVertexUvs = geometry.faceVertexUvs;
 
-			var hasFaceVertexUv = faceVertexUvs[ 0 ] && faceVertexUvs[ 0 ].length > 0;
-			var hasFaceVertexUv2 = faceVertexUvs[ 1 ] && faceVertexUvs[ 1 ].length > 0;
+	function pointInTriangle(ax, ay, bx, by, cx, cy, px, py) {
+		return (cx - px) * (ay - py) - (ax - px) * (cy - py) >= 0 && (ax - px) * (by - py) - (bx - px) * (ay - py) >= 0 && (bx - px) * (cy - py) - (cx - px) * (by - py) >= 0;
+	} // check if a diagonal between two polygon nodes is valid (lies in polygon interior)
 
-			// morphs
 
-			var morphTargets = geometry.morphTargets;
-			var morphTargetsLength = morphTargets.length;
+	function isValidDiagonal(a, b) {
+		return a.next.i !== b.i && a.prev.i !== b.i && !intersectsPolygon(a, b) && ( // dones't intersect other edges
+		locallyInside(a, b) && locallyInside(b, a) && middleInside(a, b) && ( // locally visible
+		area(a.prev, a, b.prev) || area(a, b.prev, b)) || // does not create opposite-facing sectors
+		equals(a, b) && area(a.prev, a, a.next) > 0 && area(b.prev, b, b.next) > 0); // special zero-length case
+	} // signed area of a triangle
 
-			var morphTargetsPosition;
 
-			if ( morphTargetsLength > 0 ) {
+	function area(p, q, r) {
+		return (q.y - p.y) * (r.x - q.x) - (q.x - p.x) * (r.y - q.y);
+	} // check if two points are equal
 
-				morphTargetsPosition = [];
 
-				for ( var i = 0; i < morphTargetsLength; i ++ ) {
+	function equals(p1, p2) {
+		return p1.x === p2.x && p1.y === p2.y;
+	} // check if two segments intersect
 
-					morphTargetsPosition[ i ] = [];
 
-				}
+	function intersects(p1, q1, p2, q2) {
+		const o1 = sign(area(p1, q1, p2));
+		const o2 = sign(area(p1, q1, q2));
+		const o3 = sign(area(p2, q2, p1));
+		const o4 = sign(area(p2, q2, q1));
+		if (o1 !== o2 && o3 !== o4) return true; // general case
 
-				this.morphTargets.position = morphTargetsPosition;
+		if (o1 === 0 && onSegment(p1, p2, q1)) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1
 
-			}
+		if (o2 === 0 && onSegment(p1, q2, q1)) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1
 
-			var morphNormals = geometry.morphNormals;
-			var morphNormalsLength = morphNormals.length;
+		if (o3 === 0 && onSegment(p2, p1, q2)) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2
 
-			var morphTargetsNormal;
+		if (o4 === 0 && onSegment(p2, q1, q2)) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2
 
-			if ( morphNormalsLength > 0 ) {
+		return false;
+	} // for collinear points p, q, r, check if point q lies on segment pr
 
-				morphTargetsNormal = [];
 
-				for ( var i = 0; i < morphNormalsLength; i ++ ) {
+	function onSegment(p, q, r) {
+		return q.x <= Math.max(p.x, r.x) && q.x >= Math.min(p.x, r.x) && q.y <= Math.max(p.y, r.y) && q.y >= Math.min(p.y, r.y);
+	}
 
-					morphTargetsNormal[ i ] = [];
+	function sign(num) {
+		return num > 0 ? 1 : num < 0 ? -1 : 0;
+	} // check if a polygon diagonal intersects any polygon segments
 
-				}
 
-				this.morphTargets.normal = morphTargetsNormal;
+	function intersectsPolygon(a, b) {
+		let p = a;
 
-			}
+		do {
+			if (p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i && intersects(p, p.next, a, b)) return true;
+			p = p.next;
+		} while (p !== a);
 
-			// skins
+		return false;
+	} // check if a polygon diagonal is locally inside the polygon
 
-			var skinIndices = geometry.skinIndices;
-			var skinWeights = geometry.skinWeights;
 
-			var hasSkinIndices = skinIndices.length === vertices.length;
-			var hasSkinWeights = skinWeights.length === vertices.length;
+	function locallyInside(a, b) {
+		return area(a.prev, a, a.next) < 0 ? area(a, b, a.next) >= 0 && area(a, a.prev, b) >= 0 : area(a, b, a.prev) < 0 || area(a, a.next, b) < 0;
+	} // check if the middle point of a polygon diagonal is inside the polygon
 
-			//
 
-			for ( var i = 0; i < faces.length; i ++ ) {
+	function middleInside(a, b) {
+		let p = a,
+				inside = false;
+		const px = (a.x + b.x) / 2,
+					py = (a.y + b.y) / 2;
 
-				var face = faces[ i ];
+		do {
+			if (p.y > py !== p.next.y > py && p.next.y !== p.y && px < (p.next.x - p.x) * (py - p.y) / (p.next.y - p.y) + p.x) inside = !inside;
+			p = p.next;
+		} while (p !== a);
 
-				this.vertices.push( vertices[ face.a ], vertices[ face.b ], vertices[ face.c ] );
+		return inside;
+	} // link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;
+	// if one belongs to the outer ring and another to a hole, it merges it into a single ring
 
-				var vertexNormals = face.vertexNormals;
 
-				if ( vertexNormals.length === 3 ) {
+	function splitPolygon(a, b) {
+		const a2 = new Node(a.i, a.x, a.y),
+					b2 = new Node(b.i, b.x, b.y),
+					an = a.next,
+					bp = b.prev;
+		a.next = b;
+		b.prev = a;
+		a2.next = an;
+		an.prev = a2;
+		b2.next = a2;
+		a2.prev = b2;
+		bp.next = b2;
+		b2.prev = bp;
+		return b2;
+	} // create a node and optionally link it with previous one (in a circular doubly linked list)
 
-					this.normals.push( vertexNormals[ 0 ], vertexNormals[ 1 ], vertexNormals[ 2 ] );
 
-				} else {
+	function insertNode(i, x, y, last) {
+		const p = new Node(i, x, y);
 
-					var normal = face.normal;
+		if (!last) {
+			p.prev = p;
+			p.next = p;
+		} else {
+			p.next = last.next;
+			p.prev = last;
+			last.next.prev = p;
+			last.next = p;
+		}
 
-					this.normals.push( normal, normal, normal );
+		return p;
+	}
 
-				}
+	function removeNode(p) {
+		p.next.prev = p.prev;
+		p.prev.next = p.next;
+		if (p.prevZ) p.prevZ.nextZ = p.nextZ;
+		if (p.nextZ) p.nextZ.prevZ = p.prevZ;
+	}
 
-				var vertexColors = face.vertexColors;
+	function Node(i, x, y) {
+		// vertex index in coordinates array
+		this.i = i; // vertex coordinates
 
-				if ( vertexColors.length === 3 ) {
+		this.x = x;
+		this.y = y; // previous and next vertex nodes in a polygon ring
 
-					this.colors.push( vertexColors[ 0 ], vertexColors[ 1 ], vertexColors[ 2 ] );
+		this.prev = null;
+		this.next = null; // z-order curve value
 
-				} else {
+		this.z = null; // previous and next nodes in z-order
 
-					var color = face.color;
+		this.prevZ = null;
+		this.nextZ = null; // indicates whether this is a steiner point
 
-					this.colors.push( color, color, color );
+		this.steiner = false;
+	}
 
-				}
+	function signedArea(data, start, end, dim) {
+		let sum = 0;
 
-				if ( hasFaceVertexUv === true ) {
+		for (let i = start, j = end - dim; i < end; i += dim) {
+			sum += (data[j] - data[i]) * (data[i + 1] + data[j + 1]);
+			j = i;
+		}
 
-					var vertexUvs = faceVertexUvs[ 0 ][ i ];
+		return sum;
+	}
 
-					if ( vertexUvs !== undefined ) {
-
-						this.uvs.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );
+	class ShapeUtils {
+		// calculate area of the contour polygon
+		static area(contour) {
+			const n = contour.length;
+			let a = 0.0;
 
-					} else {
+			for (let p = n - 1, q = 0; q < n; p = q++) {
+				a += contour[p].x * contour[q].y - contour[q].x * contour[p].y;
+			}
 
-						console.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv ', i );
+			return a * 0.5;
+		}
 
-						this.uvs.push( new Vector2(), new Vector2(), new Vector2() );
+		static isClockWise(pts) {
+			return ShapeUtils.area(pts) < 0;
+		}
 
-					}
+		static triangulateShape(contour, holes) {
+			const vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]
 
-				}
+			const holeIndices = []; // array of hole indices
 
-				if ( hasFaceVertexUv2 === true ) {
+			const faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]
 
-					var vertexUvs = faceVertexUvs[ 1 ][ i ];
+			removeDupEndPts(contour);
+			addContour(vertices, contour); //
 
-					if ( vertexUvs !== undefined ) {
+			let holeIndex = contour.length;
+			holes.forEach(removeDupEndPts);
 
-						this.uvs2.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );
+			for (let i = 0; i < holes.length; i++) {
+				holeIndices.push(holeIndex);
+				holeIndex += holes[i].length;
+				addContour(vertices, holes[i]);
+			} //
 
-					} else {
 
-						console.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv2 ', i );
+			const triangles = Earcut.triangulate(vertices, holeIndices); //
 
-						this.uvs2.push( new Vector2(), new Vector2(), new Vector2() );
+			for (let i = 0; i < triangles.length; i += 3) {
+				faces.push(triangles.slice(i, i + 3));
+			}
 
-					}
+			return faces;
+		}
 
-				}
+	}
 
-				// morphs
+	function removeDupEndPts(points) {
+		const l = points.length;
 
-				for ( var j = 0; j < morphTargetsLength; j ++ ) {
+		if (l > 2 && points[l - 1].equals(points[0])) {
+			points.pop();
+		}
+	}
 
-					var morphTarget = morphTargets[ j ].vertices;
+	function addContour(vertices, contour) {
+		for (let i = 0; i < contour.length; i++) {
+			vertices.push(contour[i].x);
+			vertices.push(contour[i].y);
+		}
+	}
 
-					morphTargetsPosition[ j ].push( morphTarget[ face.a ], morphTarget[ face.b ], morphTarget[ face.c ] );
+	/**
+	 * Creates extruded geometry from a path shape.
+	 *
+	 * parameters = {
+	 *
+	 *	curveSegments: <int>, // number of points on the curves
+	 *	steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too
+	 *	depth: <float>, // Depth to extrude the shape
+	 *
+	 *	bevelEnabled: <bool>, // turn on bevel
+	 *	bevelThickness: <float>, // how deep into the original shape bevel goes
+	 *	bevelSize: <float>, // how far from shape outline (including bevelOffset) is bevel
+	 *	bevelOffset: <float>, // how far from shape outline does bevel start
+	 *	bevelSegments: <int>, // number of bevel layers
+	 *
+	 *	extrudePath: <THREE.Curve> // curve to extrude shape along
+	 *
+	 *	UVGenerator: <Object> // object that provides UV generator functions
+	 *
+	 * }
+	 */
 
-				}
+	class ExtrudeGeometry extends BufferGeometry {
+		constructor(shapes, options) {
+			super();
+			this.type = 'ExtrudeGeometry';
+			this.parameters = {
+				shapes: shapes,
+				options: options
+			};
+			shapes = Array.isArray(shapes) ? shapes : [shapes];
+			const scope = this;
+			const verticesArray = [];
+			const uvArray = [];
 
-				for ( var j = 0; j < morphNormalsLength; j ++ ) {
+			for (let i = 0, l = shapes.length; i < l; i++) {
+				const shape = shapes[i];
+				addShape(shape);
+			} // build geometry
 
-					var morphNormal = morphNormals[ j ].vertexNormals[ i ];
 
-					morphTargetsNormal[ j ].push( morphNormal.a, morphNormal.b, morphNormal.c );
+			this.setAttribute('position', new Float32BufferAttribute(verticesArray, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvArray, 2));
+			this.computeVertexNormals(); // functions
 
-				}
+			function addShape(shape) {
+				const placeholder = []; // options
 
-				// skins
+				const curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;
+				const steps = options.steps !== undefined ? options.steps : 1;
+				let depth = options.depth !== undefined ? options.depth : 100;
+				let bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;
+				let bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 6;
+				let bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 2;
+				let bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;
+				let bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;
+				const extrudePath = options.extrudePath;
+				const uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator; // deprecated options
 
-				if ( hasSkinIndices ) {
+				if (options.amount !== undefined) {
+					console.warn('THREE.ExtrudeBufferGeometry: amount has been renamed to depth.');
+					depth = options.amount;
+				} //
 
-					this.skinIndices.push( skinIndices[ face.a ], skinIndices[ face.b ], skinIndices[ face.c ] );
 
-				}
+				let extrudePts,
+						extrudeByPath = false;
+				let splineTube, binormal, normal, position2;
 
-				if ( hasSkinWeights ) {
+				if (extrudePath) {
+					extrudePts = extrudePath.getSpacedPoints(steps);
+					extrudeByPath = true;
+					bevelEnabled = false; // bevels not supported for path extrusion
+					// SETUP TNB variables
+					// TODO1 - have a .isClosed in spline?
 
-					this.skinWeights.push( skinWeights[ face.a ], skinWeights[ face.b ], skinWeights[ face.c ] );
+					splineTube = extrudePath.computeFrenetFrames(steps, false); // console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);
 
-				}
+					binormal = new Vector3();
+					normal = new Vector3();
+					position2 = new Vector3();
+				} // Safeguards if bevels are not enabled
 
-			}
 
-			this.computeGroups( geometry );
+				if (!bevelEnabled) {
+					bevelSegments = 0;
+					bevelThickness = 0;
+					bevelSize = 0;
+					bevelOffset = 0;
+				} // Variables initialization
 
-			this.verticesNeedUpdate = geometry.verticesNeedUpdate;
-			this.normalsNeedUpdate = geometry.normalsNeedUpdate;
-			this.colorsNeedUpdate = geometry.colorsNeedUpdate;
-			this.uvsNeedUpdate = geometry.uvsNeedUpdate;
-			this.groupsNeedUpdate = geometry.groupsNeedUpdate;
 
-			return this;
+				const shapePoints = shape.extractPoints(curveSegments);
+				let vertices = shapePoints.shape;
+				const holes = shapePoints.holes;
+				const reverse = !ShapeUtils.isClockWise(vertices);
 
-		}
+				if (reverse) {
+					vertices = vertices.reverse(); // Maybe we should also check if holes are in the opposite direction, just to be safe ...
 
-	} );
+					for (let h = 0, hl = holes.length; h < hl; h++) {
+						const ahole = holes[h];
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+						if (ShapeUtils.isClockWise(ahole)) {
+							holes[h] = ahole.reverse();
+						}
+					}
+				}
 
-	function arrayMax( array ) {
+				const faces = ShapeUtils.triangulateShape(vertices, holes);
+				/* Vertices */
 
-		if ( array.length === 0 ) return - Infinity;
+				const contour = vertices; // vertices has all points but contour has only points of circumference
 
-		var max = array[ 0 ];
+				for (let h = 0, hl = holes.length; h < hl; h++) {
+					const ahole = holes[h];
+					vertices = vertices.concat(ahole);
+				}
 
-		for ( var i = 1, l = array.length; i < l; ++ i ) {
+				function scalePt2(pt, vec, size) {
+					if (!vec) console.error('THREE.ExtrudeGeometry: vec does not exist');
+					return vec.clone().multiplyScalar(size).add(pt);
+				}
 
-			if ( array[ i ] > max ) max = array[ i ];
+				const vlen = vertices.length,
+							flen = faces.length; // Find directions for point movement
 
-		}
+				function getBevelVec(inPt, inPrev, inNext) {
+					// computes for inPt the corresponding point inPt' on a new contour
+					//	 shifted by 1 unit (length of normalized vector) to the left
+					// if we walk along contour clockwise, this new contour is outside the old one
+					//
+					// inPt' is the intersection of the two lines parallel to the two
+					//	adjacent edges of inPt at a distance of 1 unit on the left side.
+					let v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt
+					// good reading for geometry algorithms (here: line-line intersection)
+					// http://geomalgorithms.com/a05-_intersect-1.html
 
-		return max;
+					const v_prev_x = inPt.x - inPrev.x,
+								v_prev_y = inPt.y - inPrev.y;
+					const v_next_x = inNext.x - inPt.x,
+								v_next_y = inNext.y - inPt.y;
+					const v_prev_lensq = v_prev_x * v_prev_x + v_prev_y * v_prev_y; // check for collinear edges
 
-	}
+					const collinear0 = v_prev_x * v_next_y - v_prev_y * v_next_x;
 
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+					if (Math.abs(collinear0) > Number.EPSILON) {
+						// not collinear
+						// length of vectors for normalizing
+						const v_prev_len = Math.sqrt(v_prev_lensq);
+						const v_next_len = Math.sqrt(v_next_x * v_next_x + v_next_y * v_next_y); // shift adjacent points by unit vectors to the left
 
-	var bufferGeometryId = 1; // BufferGeometry uses odd numbers as Id
+						const ptPrevShift_x = inPrev.x - v_prev_y / v_prev_len;
+						const ptPrevShift_y = inPrev.y + v_prev_x / v_prev_len;
+						const ptNextShift_x = inNext.x - v_next_y / v_next_len;
+						const ptNextShift_y = inNext.y + v_next_x / v_next_len; // scaling factor for v_prev to intersection point
 
-	function BufferGeometry() {
+						const sf = ((ptNextShift_x - ptPrevShift_x) * v_next_y - (ptNextShift_y - ptPrevShift_y) * v_next_x) / (v_prev_x * v_next_y - v_prev_y * v_next_x); // vector from inPt to intersection point
 
-		Object.defineProperty( this, 'id', { value: bufferGeometryId += 2 } );
+						v_trans_x = ptPrevShift_x + v_prev_x * sf - inPt.x;
+						v_trans_y = ptPrevShift_y + v_prev_y * sf - inPt.y; // Don't normalize!, otherwise sharp corners become ugly
+						//	but prevent crazy spikes
 
-		this.uuid = _Math.generateUUID();
+						const v_trans_lensq = v_trans_x * v_trans_x + v_trans_y * v_trans_y;
 
-		this.name = '';
-		this.type = 'BufferGeometry';
+						if (v_trans_lensq <= 2) {
+							return new Vector2(v_trans_x, v_trans_y);
+						} else {
+							shrink_by = Math.sqrt(v_trans_lensq / 2);
+						}
+					} else {
+						// handle special case of collinear edges
+						let direction_eq = false; // assumes: opposite
 
-		this.index = null;
-		this.attributes = {};
+						if (v_prev_x > Number.EPSILON) {
+							if (v_next_x > Number.EPSILON) {
+								direction_eq = true;
+							}
+						} else {
+							if (v_prev_x < -Number.EPSILON) {
+								if (v_next_x < -Number.EPSILON) {
+									direction_eq = true;
+								}
+							} else {
+								if (Math.sign(v_prev_y) === Math.sign(v_next_y)) {
+									direction_eq = true;
+								}
+							}
+						}
 
-		this.morphAttributes = {};
+						if (direction_eq) {
+							// console.log("Warning: lines are a straight sequence");
+							v_trans_x = -v_prev_y;
+							v_trans_y = v_prev_x;
+							shrink_by = Math.sqrt(v_prev_lensq);
+						} else {
+							// console.log("Warning: lines are a straight spike");
+							v_trans_x = v_prev_x;
+							v_trans_y = v_prev_y;
+							shrink_by = Math.sqrt(v_prev_lensq / 2);
+						}
+					}
 
-		this.groups = [];
+					return new Vector2(v_trans_x / shrink_by, v_trans_y / shrink_by);
+				}
 
-		this.boundingBox = null;
-		this.boundingSphere = null;
+				const contourMovements = [];
 
-		this.drawRange = { start: 0, count: Infinity };
+				for (let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i++, j++, k++) {
+					if (j === il) j = 0;
+					if (k === il) k = 0; //	(j)---(i)---(k)
+					// console.log('i,j,k', i, j , k)
 
-	}
+					contourMovements[i] = getBevelVec(contour[i], contour[j], contour[k]);
+				}
 
-	BufferGeometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+				const holesMovements = [];
+				let oneHoleMovements,
+						verticesMovements = contourMovements.concat();
 
-		constructor: BufferGeometry,
+				for (let h = 0, hl = holes.length; h < hl; h++) {
+					const ahole = holes[h];
+					oneHoleMovements = [];
 
-		isBufferGeometry: true,
+					for (let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i++, j++, k++) {
+						if (j === il) j = 0;
+						if (k === il) k = 0; //	(j)---(i)---(k)
 
-		getIndex: function () {
+						oneHoleMovements[i] = getBevelVec(ahole[i], ahole[j], ahole[k]);
+					}
 
-			return this.index;
+					holesMovements.push(oneHoleMovements);
+					verticesMovements = verticesMovements.concat(oneHoleMovements);
+				} // Loop bevelSegments, 1 for the front, 1 for the back
 
-		},
 
-		setIndex: function ( index ) {
+				for (let b = 0; b < bevelSegments; b++) {
+					//for ( b = bevelSegments; b > 0; b -- ) {
+					const t = b / bevelSegments;
+					const z = bevelThickness * Math.cos(t * Math.PI / 2);
+					const bs = bevelSize * Math.sin(t * Math.PI / 2) + bevelOffset; // contract shape
 
-			if ( Array.isArray( index ) ) {
+					for (let i = 0, il = contour.length; i < il; i++) {
+						const vert = scalePt2(contour[i], contourMovements[i], bs);
+						v(vert.x, vert.y, -z);
+					} // expand holes
 
-				this.index = new ( arrayMax( index ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );
 
-			} else {
+					for (let h = 0, hl = holes.length; h < hl; h++) {
+						const ahole = holes[h];
+						oneHoleMovements = holesMovements[h];
 
-				this.index = index;
+						for (let i = 0, il = ahole.length; i < il; i++) {
+							const vert = scalePt2(ahole[i], oneHoleMovements[i], bs);
+							v(vert.x, vert.y, -z);
+						}
+					}
+				}
 
-			}
+				const bs = bevelSize + bevelOffset; // Back facing vertices
 
-		},
+				for (let i = 0; i < vlen; i++) {
+					const vert = bevelEnabled ? scalePt2(vertices[i], verticesMovements[i], bs) : vertices[i];
 
-		addAttribute: function ( name, attribute ) {
+					if (!extrudeByPath) {
+						v(vert.x, vert.y, 0);
+					} else {
+						// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );
+						normal.copy(splineTube.normals[0]).multiplyScalar(vert.x);
+						binormal.copy(splineTube.binormals[0]).multiplyScalar(vert.y);
+						position2.copy(extrudePts[0]).add(normal).add(binormal);
+						v(position2.x, position2.y, position2.z);
+					}
+				} // Add stepped vertices...
+				// Including front facing vertices
 
-			if ( ! ( attribute && attribute.isBufferAttribute ) && ! ( attribute && attribute.isInterleavedBufferAttribute ) ) {
 
-				console.warn( 'THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).' );
+				for (let s = 1; s <= steps; s++) {
+					for (let i = 0; i < vlen; i++) {
+						const vert = bevelEnabled ? scalePt2(vertices[i], verticesMovements[i], bs) : vertices[i];
 
-				this.addAttribute( name, new BufferAttribute( arguments[ 1 ], arguments[ 2 ] ) );
+						if (!extrudeByPath) {
+							v(vert.x, vert.y, depth / steps * s);
+						} else {
+							// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );
+							normal.copy(splineTube.normals[s]).multiplyScalar(vert.x);
+							binormal.copy(splineTube.binormals[s]).multiplyScalar(vert.y);
+							position2.copy(extrudePts[s]).add(normal).add(binormal);
+							v(position2.x, position2.y, position2.z);
+						}
+					}
+				} // Add bevel segments planes
+				//for ( b = 1; b <= bevelSegments; b ++ ) {
 
-				return;
 
-			}
+				for (let b = bevelSegments - 1; b >= 0; b--) {
+					const t = b / bevelSegments;
+					const z = bevelThickness * Math.cos(t * Math.PI / 2);
+					const bs = bevelSize * Math.sin(t * Math.PI / 2) + bevelOffset; // contract shape
 
-			if ( name === 'index' ) {
+					for (let i = 0, il = contour.length; i < il; i++) {
+						const vert = scalePt2(contour[i], contourMovements[i], bs);
+						v(vert.x, vert.y, depth + z);
+					} // expand holes
 
-				console.warn( 'THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.' );
-				this.setIndex( attribute );
 
-				return;
+					for (let h = 0, hl = holes.length; h < hl; h++) {
+						const ahole = holes[h];
+						oneHoleMovements = holesMovements[h];
 
-			}
+						for (let i = 0, il = ahole.length; i < il; i++) {
+							const vert = scalePt2(ahole[i], oneHoleMovements[i], bs);
 
-			this.attributes[ name ] = attribute;
+							if (!extrudeByPath) {
+								v(vert.x, vert.y, depth + z);
+							} else {
+								v(vert.x, vert.y + extrudePts[steps - 1].y, extrudePts[steps - 1].x + z);
+							}
+						}
+					}
+				}
+				/* Faces */
+				// Top and bottom faces
 
-			return this;
 
-		},
+				buildLidFaces(); // Sides faces
 
-		getAttribute: function ( name ) {
+				buildSideFaces(); /////	Internal functions
 
-			return this.attributes[ name ];
+				function buildLidFaces() {
+					const start = verticesArray.length / 3;
 
-		},
+					if (bevelEnabled) {
+						let layer = 0; // steps + 1
 
-		removeAttribute: function ( name ) {
+						let offset = vlen * layer; // Bottom faces
 
-			delete this.attributes[ name ];
+						for (let i = 0; i < flen; i++) {
+							const face = faces[i];
+							f3(face[2] + offset, face[1] + offset, face[0] + offset);
+						}
 
-			return this;
+						layer = steps + bevelSegments * 2;
+						offset = vlen * layer; // Top faces
 
-		},
+						for (let i = 0; i < flen; i++) {
+							const face = faces[i];
+							f3(face[0] + offset, face[1] + offset, face[2] + offset);
+						}
+					} else {
+						// Bottom faces
+						for (let i = 0; i < flen; i++) {
+							const face = faces[i];
+							f3(face[2], face[1], face[0]);
+						} // Top faces
 
-		addGroup: function ( start, count, materialIndex ) {
 
-			this.groups.push( {
+						for (let i = 0; i < flen; i++) {
+							const face = faces[i];
+							f3(face[0] + vlen * steps, face[1] + vlen * steps, face[2] + vlen * steps);
+						}
+					}
 
-				start: start,
-				count: count,
-				materialIndex: materialIndex !== undefined ? materialIndex : 0
+					scope.addGroup(start, verticesArray.length / 3 - start, 0);
+				} // Create faces for the z-sides of the shape
 
-			} );
 
-		},
+				function buildSideFaces() {
+					const start = verticesArray.length / 3;
+					let layeroffset = 0;
+					sidewalls(contour, layeroffset);
+					layeroffset += contour.length;
 
-		clearGroups: function () {
+					for (let h = 0, hl = holes.length; h < hl; h++) {
+						const ahole = holes[h];
+						sidewalls(ahole, layeroffset); //, true
 
-			this.groups = [];
+						layeroffset += ahole.length;
+					}
 
-		},
+					scope.addGroup(start, verticesArray.length / 3 - start, 1);
+				}
 
-		setDrawRange: function ( start, count ) {
+				function sidewalls(contour, layeroffset) {
+					let i = contour.length;
 
-			this.drawRange.start = start;
-			this.drawRange.count = count;
+					while (--i >= 0) {
+						const j = i;
+						let k = i - 1;
+						if (k < 0) k = contour.length - 1; //console.log('b', i,j, i-1, k,vertices.length);
 
-		},
+						for (let s = 0, sl = steps + bevelSegments * 2; s < sl; s++) {
+							const slen1 = vlen * s;
+							const slen2 = vlen * (s + 1);
+							const a = layeroffset + j + slen1,
+										b = layeroffset + k + slen1,
+										c = layeroffset + k + slen2,
+										d = layeroffset + j + slen2;
+							f4(a, b, c, d);
+						}
+					}
+				}
 
-		applyMatrix: function ( matrix ) {
+				function v(x, y, z) {
+					placeholder.push(x);
+					placeholder.push(y);
+					placeholder.push(z);
+				}
 
-			var position = this.attributes.position;
+				function f3(a, b, c) {
+					addVertex(a);
+					addVertex(b);
+					addVertex(c);
+					const nextIndex = verticesArray.length / 3;
+					const uvs = uvgen.generateTopUV(scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1);
+					addUV(uvs[0]);
+					addUV(uvs[1]);
+					addUV(uvs[2]);
+				}
 
-			if ( position !== undefined ) {
+				function f4(a, b, c, d) {
+					addVertex(a);
+					addVertex(b);
+					addVertex(d);
+					addVertex(b);
+					addVertex(c);
+					addVertex(d);
+					const nextIndex = verticesArray.length / 3;
+					const uvs = uvgen.generateSideWallUV(scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1);
+					addUV(uvs[0]);
+					addUV(uvs[1]);
+					addUV(uvs[3]);
+					addUV(uvs[1]);
+					addUV(uvs[2]);
+					addUV(uvs[3]);
+				}
 
-				matrix.applyToBufferAttribute( position );
-				position.needsUpdate = true;
+				function addVertex(index) {
+					verticesArray.push(placeholder[index * 3 + 0]);
+					verticesArray.push(placeholder[index * 3 + 1]);
+					verticesArray.push(placeholder[index * 3 + 2]);
+				}
 
+				function addUV(vector2) {
+					uvArray.push(vector2.x);
+					uvArray.push(vector2.y);
+				}
 			}
+		}
 
-			var normal = this.attributes.normal;
-
-			if ( normal !== undefined ) {
-
-				var normalMatrix = new Matrix3().getNormalMatrix( matrix );
+		toJSON() {
+			const data = super.toJSON();
+			const shapes = this.parameters.shapes;
+			const options = this.parameters.options;
+			return toJSON$1(shapes, options, data);
+		}
 
-				normalMatrix.applyToBufferAttribute( normal );
-				normal.needsUpdate = true;
+		static fromJSON(data, shapes) {
+			const geometryShapes = [];
 
+			for (let j = 0, jl = data.shapes.length; j < jl; j++) {
+				const shape = shapes[data.shapes[j]];
+				geometryShapes.push(shape);
 			}
 
-			if ( this.boundingBox !== null ) {
-
-				this.computeBoundingBox();
+			const extrudePath = data.options.extrudePath;
 
+			if (extrudePath !== undefined) {
+				data.options.extrudePath = new Curves[extrudePath.type]().fromJSON(extrudePath);
 			}
 
-			if ( this.boundingSphere !== null ) {
-
-				this.computeBoundingSphere();
-
-			}
+			return new ExtrudeGeometry(geometryShapes, data.options);
+		}
 
-			return this;
+	}
 
+	const WorldUVGenerator = {
+		generateTopUV: function (geometry, vertices, indexA, indexB, indexC) {
+			const a_x = vertices[indexA * 3];
+			const a_y = vertices[indexA * 3 + 1];
+			const b_x = vertices[indexB * 3];
+			const b_y = vertices[indexB * 3 + 1];
+			const c_x = vertices[indexC * 3];
+			const c_y = vertices[indexC * 3 + 1];
+			return [new Vector2(a_x, a_y), new Vector2(b_x, b_y), new Vector2(c_x, c_y)];
 		},
+		generateSideWallUV: function (geometry, vertices, indexA, indexB, indexC, indexD) {
+			const a_x = vertices[indexA * 3];
+			const a_y = vertices[indexA * 3 + 1];
+			const a_z = vertices[indexA * 3 + 2];
+			const b_x = vertices[indexB * 3];
+			const b_y = vertices[indexB * 3 + 1];
+			const b_z = vertices[indexB * 3 + 2];
+			const c_x = vertices[indexC * 3];
+			const c_y = vertices[indexC * 3 + 1];
+			const c_z = vertices[indexC * 3 + 2];
+			const d_x = vertices[indexD * 3];
+			const d_y = vertices[indexD * 3 + 1];
+			const d_z = vertices[indexD * 3 + 2];
 
-		rotateX: function () {
+			if (Math.abs(a_y - b_y) < Math.abs(a_x - b_x)) {
+				return [new Vector2(a_x, 1 - a_z), new Vector2(b_x, 1 - b_z), new Vector2(c_x, 1 - c_z), new Vector2(d_x, 1 - d_z)];
+			} else {
+				return [new Vector2(a_y, 1 - a_z), new Vector2(b_y, 1 - b_z), new Vector2(c_y, 1 - c_z), new Vector2(d_y, 1 - d_z)];
+			}
+		}
+	};
 
-			// rotate geometry around world x-axis
+	function toJSON$1(shapes, options, data) {
+		data.shapes = [];
 
-			var m1 = new Matrix4();
+		if (Array.isArray(shapes)) {
+			for (let i = 0, l = shapes.length; i < l; i++) {
+				const shape = shapes[i];
+				data.shapes.push(shape.uuid);
+			}
+		} else {
+			data.shapes.push(shapes.uuid);
+		}
 
-			return function rotateX( angle ) {
+		if (options.extrudePath !== undefined) data.options.extrudePath = options.extrudePath.toJSON();
+		return data;
+	}
 
-				m1.makeRotationX( angle );
+	class IcosahedronGeometry extends PolyhedronGeometry {
+		constructor(radius = 1, detail = 0) {
+			const t = (1 + Math.sqrt(5)) / 2;
+			const vertices = [-1, t, 0, 1, t, 0, -1, -t, 0, 1, -t, 0, 0, -1, t, 0, 1, t, 0, -1, -t, 0, 1, -t, t, 0, -1, t, 0, 1, -t, 0, -1, -t, 0, 1];
+			const indices = [0, 11, 5, 0, 5, 1, 0, 1, 7, 0, 7, 10, 0, 10, 11, 1, 5, 9, 5, 11, 4, 11, 10, 2, 10, 7, 6, 7, 1, 8, 3, 9, 4, 3, 4, 2, 3, 2, 6, 3, 6, 8, 3, 8, 9, 4, 9, 5, 2, 4, 11, 6, 2, 10, 8, 6, 7, 9, 8, 1];
+			super(vertices, indices, radius, detail);
+			this.type = 'IcosahedronGeometry';
+			this.parameters = {
+				radius: radius,
+				detail: detail
+			};
+		}
 
-				this.applyMatrix( m1 );
+		static fromJSON(data) {
+			return new IcosahedronGeometry(data.radius, data.detail);
+		}
 
-				return this;
+	}
 
+	class LatheGeometry extends BufferGeometry {
+		constructor(points, segments = 12, phiStart = 0, phiLength = Math.PI * 2) {
+			super();
+			this.type = 'LatheGeometry';
+			this.parameters = {
+				points: points,
+				segments: segments,
+				phiStart: phiStart,
+				phiLength: phiLength
 			};
+			segments = Math.floor(segments); // clamp phiLength so it's in range of [ 0, 2PI ]
 
-		}(),
+			phiLength = clamp(phiLength, 0, Math.PI * 2); // buffers
 
-		rotateY: function () {
+			const indices = [];
+			const vertices = [];
+			const uvs = []; // helper variables
 
-			// rotate geometry around world y-axis
+			const inverseSegments = 1.0 / segments;
+			const vertex = new Vector3();
+			const uv = new Vector2(); // generate vertices and uvs
 
-			var m1 = new Matrix4();
+			for (let i = 0; i <= segments; i++) {
+				const phi = phiStart + i * inverseSegments * phiLength;
+				const sin = Math.sin(phi);
+				const cos = Math.cos(phi);
 
-			return function rotateY( angle ) {
+				for (let j = 0; j <= points.length - 1; j++) {
+					// vertex
+					vertex.x = points[j].x * sin;
+					vertex.y = points[j].y;
+					vertex.z = points[j].x * cos;
+					vertices.push(vertex.x, vertex.y, vertex.z); // uv
 
-				m1.makeRotationY( angle );
+					uv.x = i / segments;
+					uv.y = j / (points.length - 1);
+					uvs.push(uv.x, uv.y);
+				}
+			} // indices
 
-				this.applyMatrix( m1 );
 
-				return this;
+			for (let i = 0; i < segments; i++) {
+				for (let j = 0; j < points.length - 1; j++) {
+					const base = j + i * points.length;
+					const a = base;
+					const b = base + points.length;
+					const c = base + points.length + 1;
+					const d = base + 1; // faces
 
-			};
+					indices.push(a, b, d);
+					indices.push(b, c, d);
+				}
+			} // build geometry
 
-		}(),
 
-		rotateZ: function () {
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // generate normals
 
-			// rotate geometry around world z-axis
+			this.computeVertexNormals(); // if the geometry is closed, we need to average the normals along the seam.
+			// because the corresponding vertices are identical (but still have different UVs).
 
-			var m1 = new Matrix4();
+			if (phiLength === Math.PI * 2) {
+				const normals = this.attributes.normal.array;
+				const n1 = new Vector3();
+				const n2 = new Vector3();
+				const n = new Vector3(); // this is the buffer offset for the last line of vertices
 
-			return function rotateZ( angle ) {
+				const base = segments * points.length * 3;
 
-				m1.makeRotationZ( angle );
+				for (let i = 0, j = 0; i < points.length; i++, j += 3) {
+					// select the normal of the vertex in the first line
+					n1.x = normals[j + 0];
+					n1.y = normals[j + 1];
+					n1.z = normals[j + 2]; // select the normal of the vertex in the last line
 
-				this.applyMatrix( m1 );
+					n2.x = normals[base + j + 0];
+					n2.y = normals[base + j + 1];
+					n2.z = normals[base + j + 2]; // average normals
 
-				return this;
+					n.addVectors(n1, n2).normalize(); // assign the new values to both normals
 
-			};
+					normals[j + 0] = normals[base + j + 0] = n.x;
+					normals[j + 1] = normals[base + j + 1] = n.y;
+					normals[j + 2] = normals[base + j + 2] = n.z;
+				}
+			}
+		}
 
-		}(),
+		static fromJSON(data) {
+			return new LatheGeometry(data.points, data.segments, data.phiStart, data.phiLength);
+		}
 
-		translate: function () {
+	}
 
-			// translate geometry
+	class OctahedronGeometry extends PolyhedronGeometry {
+		constructor(radius = 1, detail = 0) {
+			const vertices = [1, 0, 0, -1, 0, 0, 0, 1, 0, 0, -1, 0, 0, 0, 1, 0, 0, -1];
+			const indices = [0, 2, 4, 0, 4, 3, 0, 3, 5, 0, 5, 2, 1, 2, 5, 1, 5, 3, 1, 3, 4, 1, 4, 2];
+			super(vertices, indices, radius, detail);
+			this.type = 'OctahedronGeometry';
+			this.parameters = {
+				radius: radius,
+				detail: detail
+			};
+		}
 
-			var m1 = new Matrix4();
+		static fromJSON(data) {
+			return new OctahedronGeometry(data.radius, data.detail);
+		}
 
-			return function translate( x, y, z ) {
+	}
 
-				m1.makeTranslation( x, y, z );
+	/**
+	 * Parametric Surfaces Geometry
+	 * based on the brilliant article by @prideout https://prideout.net/blog/old/blog/index.html@p=44.html
+	 */
 
-				this.applyMatrix( m1 );
+	class ParametricGeometry extends BufferGeometry {
+		constructor(func, slices, stacks) {
+			super();
+			this.type = 'ParametricGeometry';
+			this.parameters = {
+				func: func,
+				slices: slices,
+				stacks: stacks
+			}; // buffers
+
+			const indices = [];
+			const vertices = [];
+			const normals = [];
+			const uvs = [];
+			const EPS = 0.00001;
+			const normal = new Vector3();
+			const p0 = new Vector3(),
+						p1 = new Vector3();
+			const pu = new Vector3(),
+						pv = new Vector3();
+
+			if (func.length < 3) {
+				console.error('THREE.ParametricGeometry: Function must now modify a Vector3 as third parameter.');
+			} // generate vertices, normals and uvs
+
+
+			const sliceCount = slices + 1;
+
+			for (let i = 0; i <= stacks; i++) {
+				const v = i / stacks;
+
+				for (let j = 0; j <= slices; j++) {
+					const u = j / slices; // vertex
+
+					func(u, v, p0);
+					vertices.push(p0.x, p0.y, p0.z); // normal
+					// approximate tangent vectors via finite differences
+
+					if (u - EPS >= 0) {
+						func(u - EPS, v, p1);
+						pu.subVectors(p0, p1);
+					} else {
+						func(u + EPS, v, p1);
+						pu.subVectors(p1, p0);
+					}
 
-				return this;
+					if (v - EPS >= 0) {
+						func(u, v - EPS, p1);
+						pv.subVectors(p0, p1);
+					} else {
+						func(u, v + EPS, p1);
+						pv.subVectors(p1, p0);
+					} // cross product of tangent vectors returns surface normal
 
-			};
 
-		}(),
+					normal.crossVectors(pu, pv).normalize();
+					normals.push(normal.x, normal.y, normal.z); // uv
 
-		scale: function () {
+					uvs.push(u, v);
+				}
+			} // generate indices
 
-			// scale geometry
 
-			var m1 = new Matrix4();
+			for (let i = 0; i < stacks; i++) {
+				for (let j = 0; j < slices; j++) {
+					const a = i * sliceCount + j;
+					const b = i * sliceCount + j + 1;
+					const c = (i + 1) * sliceCount + j + 1;
+					const d = (i + 1) * sliceCount + j; // faces one and two
 
-			return function scale( x, y, z ) {
+					indices.push(a, b, d);
+					indices.push(b, c, d);
+				}
+			} // build geometry
 
-				m1.makeScale( x, y, z );
 
-				this.applyMatrix( m1 );
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+		}
 
-				return this;
+	}
 
+	class RingGeometry extends BufferGeometry {
+		constructor(innerRadius = 0.5, outerRadius = 1, thetaSegments = 8, phiSegments = 1, thetaStart = 0, thetaLength = Math.PI * 2) {
+			super();
+			this.type = 'RingGeometry';
+			this.parameters = {
+				innerRadius: innerRadius,
+				outerRadius: outerRadius,
+				thetaSegments: thetaSegments,
+				phiSegments: phiSegments,
+				thetaStart: thetaStart,
+				thetaLength: thetaLength
 			};
+			thetaSegments = Math.max(3, thetaSegments);
+			phiSegments = Math.max(1, phiSegments); // buffers
 
-		}(),
-
-		lookAt: function () {
-
-			var obj = new Object3D();
-
-			return function lookAt( vector ) {
+			const indices = [];
+			const vertices = [];
+			const normals = [];
+			const uvs = []; // some helper variables
 
-				obj.lookAt( vector );
+			let radius = innerRadius;
+			const radiusStep = (outerRadius - innerRadius) / phiSegments;
+			const vertex = new Vector3();
+			const uv = new Vector2(); // generate vertices, normals and uvs
 
-				obj.updateMatrix();
+			for (let j = 0; j <= phiSegments; j++) {
+				for (let i = 0; i <= thetaSegments; i++) {
+					// values are generate from the inside of the ring to the outside
+					const segment = thetaStart + i / thetaSegments * thetaLength; // vertex
 
-				this.applyMatrix( obj.matrix );
+					vertex.x = radius * Math.cos(segment);
+					vertex.y = radius * Math.sin(segment);
+					vertices.push(vertex.x, vertex.y, vertex.z); // normal
 
-			};
+					normals.push(0, 0, 1); // uv
 
-		}(),
+					uv.x = (vertex.x / outerRadius + 1) / 2;
+					uv.y = (vertex.y / outerRadius + 1) / 2;
+					uvs.push(uv.x, uv.y);
+				} // increase the radius for next row of vertices
 
-		center: function () {
 
-			var offset = new Vector3();
+				radius += radiusStep;
+			} // indices
 
-			return function center() {
 
-				this.computeBoundingBox();
+			for (let j = 0; j < phiSegments; j++) {
+				const thetaSegmentLevel = j * (thetaSegments + 1);
 
-				this.boundingBox.getCenter( offset ).negate();
+				for (let i = 0; i < thetaSegments; i++) {
+					const segment = i + thetaSegmentLevel;
+					const a = segment;
+					const b = segment + thetaSegments + 1;
+					const c = segment + thetaSegments + 2;
+					const d = segment + 1; // faces
 
-				this.translate( offset.x, offset.y, offset.z );
+					indices.push(a, b, d);
+					indices.push(b, c, d);
+				}
+			} // build geometry
 
-				return this;
 
-			};
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+		}
 
-		}(),
+		static fromJSON(data) {
+			return new RingGeometry(data.innerRadius, data.outerRadius, data.thetaSegments, data.phiSegments, data.thetaStart, data.thetaLength);
+		}
 
-		setFromObject: function ( object ) {
+	}
 
-			// console.log( 'THREE.BufferGeometry.setFromObject(). Converting', object, this );
+	class ShapeGeometry extends BufferGeometry {
+		constructor(shapes, curveSegments = 12) {
+			super();
+			this.type = 'ShapeGeometry';
+			this.parameters = {
+				shapes: shapes,
+				curveSegments: curveSegments
+			}; // buffers
 
-			var geometry = object.geometry;
+			const indices = [];
+			const vertices = [];
+			const normals = [];
+			const uvs = []; // helper variables
 
-			if ( object.isPoints || object.isLine ) {
+			let groupStart = 0;
+			let groupCount = 0; // allow single and array values for "shapes" parameter
 
-				var positions = new Float32BufferAttribute( geometry.vertices.length * 3, 3 );
-				var colors = new Float32BufferAttribute( geometry.colors.length * 3, 3 );
+			if (Array.isArray(shapes) === false) {
+				addShape(shapes);
+			} else {
+				for (let i = 0; i < shapes.length; i++) {
+					addShape(shapes[i]);
+					this.addGroup(groupStart, groupCount, i); // enables MultiMaterial support
 
-				this.addAttribute( 'position', positions.copyVector3sArray( geometry.vertices ) );
-				this.addAttribute( 'color', colors.copyColorsArray( geometry.colors ) );
+					groupStart += groupCount;
+					groupCount = 0;
+				}
+			} // build geometry
 
-				if ( geometry.lineDistances && geometry.lineDistances.length === geometry.vertices.length ) {
 
-					var lineDistances = new Float32BufferAttribute( geometry.lineDistances.length, 1 );
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // helper functions
 
-					this.addAttribute( 'lineDistance', lineDistances.copyArray( geometry.lineDistances ) );
+			function addShape(shape) {
+				const indexOffset = vertices.length / 3;
+				const points = shape.extractPoints(curveSegments);
+				let shapeVertices = points.shape;
+				const shapeHoles = points.holes; // check direction of vertices
 
+				if (ShapeUtils.isClockWise(shapeVertices) === false) {
+					shapeVertices = shapeVertices.reverse();
 				}
 
-				if ( geometry.boundingSphere !== null ) {
-
-					this.boundingSphere = geometry.boundingSphere.clone();
+				for (let i = 0, l = shapeHoles.length; i < l; i++) {
+					const shapeHole = shapeHoles[i];
 
+					if (ShapeUtils.isClockWise(shapeHole) === true) {
+						shapeHoles[i] = shapeHole.reverse();
+					}
 				}
 
-				if ( geometry.boundingBox !== null ) {
+				const faces = ShapeUtils.triangulateShape(shapeVertices, shapeHoles); // join vertices of inner and outer paths to a single array
 
-					this.boundingBox = geometry.boundingBox.clone();
+				for (let i = 0, l = shapeHoles.length; i < l; i++) {
+					const shapeHole = shapeHoles[i];
+					shapeVertices = shapeVertices.concat(shapeHole);
+				} // vertices, normals, uvs
 
-				}
-
-			} else if ( object.isMesh ) {
 
-				if ( geometry && geometry.isGeometry ) {
+				for (let i = 0, l = shapeVertices.length; i < l; i++) {
+					const vertex = shapeVertices[i];
+					vertices.push(vertex.x, vertex.y, 0);
+					normals.push(0, 0, 1);
+					uvs.push(vertex.x, vertex.y); // world uvs
+				} // incides
 
-					this.fromGeometry( geometry );
 
+				for (let i = 0, l = faces.length; i < l; i++) {
+					const face = faces[i];
+					const a = face[0] + indexOffset;
+					const b = face[1] + indexOffset;
+					const c = face[2] + indexOffset;
+					indices.push(a, b, c);
+					groupCount += 3;
 				}
-
 			}
+		}
 
-			return this;
+		toJSON() {
+			const data = super.toJSON();
+			const shapes = this.parameters.shapes;
+			return toJSON(shapes, data);
+		}
 
-		},
+		static fromJSON(data, shapes) {
+			const geometryShapes = [];
 
-		setFromPoints: function ( points ) {
+			for (let j = 0, jl = data.shapes.length; j < jl; j++) {
+				const shape = shapes[data.shapes[j]];
+				geometryShapes.push(shape);
+			}
 
-			var position = [];
+			return new ShapeGeometry(geometryShapes, data.curveSegments);
+		}
 
-			for ( var i = 0, l = points.length; i < l; i ++ ) {
+	}
 
-				var point = points[ i ];
-				position.push( point.x, point.y, point.z || 0 );
+	function toJSON(shapes, data) {
+		data.shapes = [];
 
+		if (Array.isArray(shapes)) {
+			for (let i = 0, l = shapes.length; i < l; i++) {
+				const shape = shapes[i];
+				data.shapes.push(shape.uuid);
 			}
+		} else {
+			data.shapes.push(shapes.uuid);
+		}
 
-			this.addAttribute( 'position', new Float32BufferAttribute( position, 3 ) );
+		return data;
+	}
 
-			return this;
+	class SphereGeometry extends BufferGeometry {
+		constructor(radius = 1, widthSegments = 8, heightSegments = 6, phiStart = 0, phiLength = Math.PI * 2, thetaStart = 0, thetaLength = Math.PI) {
+			super();
+			this.type = 'SphereGeometry';
+			this.parameters = {
+				radius: radius,
+				widthSegments: widthSegments,
+				heightSegments: heightSegments,
+				phiStart: phiStart,
+				phiLength: phiLength,
+				thetaStart: thetaStart,
+				thetaLength: thetaLength
+			};
+			widthSegments = Math.max(3, Math.floor(widthSegments));
+			heightSegments = Math.max(2, Math.floor(heightSegments));
+			const thetaEnd = Math.min(thetaStart + thetaLength, Math.PI);
+			let index = 0;
+			const grid = [];
+			const vertex = new Vector3();
+			const normal = new Vector3(); // buffers
 
-		},
+			const indices = [];
+			const vertices = [];
+			const normals = [];
+			const uvs = []; // generate vertices, normals and uvs
 
-		updateFromObject: function ( object ) {
+			for (let iy = 0; iy <= heightSegments; iy++) {
+				const verticesRow = [];
+				const v = iy / heightSegments; // special case for the poles
 
-			var geometry = object.geometry;
+				let uOffset = 0;
 
-			if ( object.isMesh ) {
+				if (iy == 0 && thetaStart == 0) {
+					uOffset = 0.5 / widthSegments;
+				} else if (iy == heightSegments && thetaEnd == Math.PI) {
+					uOffset = -0.5 / widthSegments;
+				}
 
-				var direct = geometry.__directGeometry;
+				for (let ix = 0; ix <= widthSegments; ix++) {
+					const u = ix / widthSegments; // vertex
 
-				if ( geometry.elementsNeedUpdate === true ) {
+					vertex.x = -radius * Math.cos(phiStart + u * phiLength) * Math.sin(thetaStart + v * thetaLength);
+					vertex.y = radius * Math.cos(thetaStart + v * thetaLength);
+					vertex.z = radius * Math.sin(phiStart + u * phiLength) * Math.sin(thetaStart + v * thetaLength);
+					vertices.push(vertex.x, vertex.y, vertex.z); // normal
 
-					direct = undefined;
-					geometry.elementsNeedUpdate = false;
+					normal.copy(vertex).normalize();
+					normals.push(normal.x, normal.y, normal.z); // uv
 
+					uvs.push(u + uOffset, 1 - v);
+					verticesRow.push(index++);
 				}
 
-				if ( direct === undefined ) {
+				grid.push(verticesRow);
+			} // indices
 
-					return this.fromGeometry( geometry );
 
+			for (let iy = 0; iy < heightSegments; iy++) {
+				for (let ix = 0; ix < widthSegments; ix++) {
+					const a = grid[iy][ix + 1];
+					const b = grid[iy][ix];
+					const c = grid[iy + 1][ix];
+					const d = grid[iy + 1][ix + 1];
+					if (iy !== 0 || thetaStart > 0) indices.push(a, b, d);
+					if (iy !== heightSegments - 1 || thetaEnd < Math.PI) indices.push(b, c, d);
 				}
+			} // build geometry
 
-				direct.verticesNeedUpdate = geometry.verticesNeedUpdate;
-				direct.normalsNeedUpdate = geometry.normalsNeedUpdate;
-				direct.colorsNeedUpdate = geometry.colorsNeedUpdate;
-				direct.uvsNeedUpdate = geometry.uvsNeedUpdate;
-				direct.groupsNeedUpdate = geometry.groupsNeedUpdate;
 
-				geometry.verticesNeedUpdate = false;
-				geometry.normalsNeedUpdate = false;
-				geometry.colorsNeedUpdate = false;
-				geometry.uvsNeedUpdate = false;
-				geometry.groupsNeedUpdate = false;
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+		}
 
-				geometry = direct;
+		static fromJSON(data) {
+			return new SphereGeometry(data.radius, data.widthSegments, data.heightSegments, data.phiStart, data.phiLength, data.thetaStart, data.thetaLength);
+		}
 
-			}
+	}
 
-			var attribute;
+	class TetrahedronGeometry extends PolyhedronGeometry {
+		constructor(radius = 1, detail = 0) {
+			const vertices = [1, 1, 1, -1, -1, 1, -1, 1, -1, 1, -1, -1];
+			const indices = [2, 1, 0, 0, 3, 2, 1, 3, 0, 2, 3, 1];
+			super(vertices, indices, radius, detail);
+			this.type = 'TetrahedronGeometry';
+			this.parameters = {
+				radius: radius,
+				detail: detail
+			};
+		}
 
-			if ( geometry.verticesNeedUpdate === true ) {
+		static fromJSON(data) {
+			return new TetrahedronGeometry(data.radius, data.detail);
+		}
 
-				attribute = this.attributes.position;
+	}
 
-				if ( attribute !== undefined ) {
+	/**
+	 * Text = 3D Text
+	 *
+	 * parameters = {
+	 *	font: <THREE.Font>, // font
+	 *
+	 *	size: <float>, // size of the text
+	 *	height: <float>, // thickness to extrude text
+	 *	curveSegments: <int>, // number of points on the curves
+	 *
+	 *	bevelEnabled: <bool>, // turn on bevel
+	 *	bevelThickness: <float>, // how deep into text bevel goes
+	 *	bevelSize: <float>, // how far from text outline (including bevelOffset) is bevel
+	 *	bevelOffset: <float> // how far from text outline does bevel start
+	 * }
+	 */
 
-					attribute.copyVector3sArray( geometry.vertices );
-					attribute.needsUpdate = true;
+	class TextGeometry extends ExtrudeGeometry {
+		constructor(text, parameters = {}) {
+			const font = parameters.font;
 
-				}
+			if (!(font && font.isFont)) {
+				console.error('THREE.TextGeometry: font parameter is not an instance of THREE.Font.');
+				return new BufferGeometry();
+			}
 
-				geometry.verticesNeedUpdate = false;
+			const shapes = font.generateShapes(text, parameters.size); // translate parameters to ExtrudeGeometry API
 
-			}
+			parameters.depth = parameters.height !== undefined ? parameters.height : 50; // defaults
 
-			if ( geometry.normalsNeedUpdate === true ) {
+			if (parameters.bevelThickness === undefined) parameters.bevelThickness = 10;
+			if (parameters.bevelSize === undefined) parameters.bevelSize = 8;
+			if (parameters.bevelEnabled === undefined) parameters.bevelEnabled = false;
+			super(shapes, parameters);
+			this.type = 'TextGeometry';
+		}
 
-				attribute = this.attributes.normal;
+	}
 
-				if ( attribute !== undefined ) {
+	class TorusGeometry extends BufferGeometry {
+		constructor(radius = 1, tube = 0.4, radialSegments = 8, tubularSegments = 6, arc = Math.PI * 2) {
+			super();
+			this.type = 'TorusGeometry';
+			this.parameters = {
+				radius: radius,
+				tube: tube,
+				radialSegments: radialSegments,
+				tubularSegments: tubularSegments,
+				arc: arc
+			};
+			radialSegments = Math.floor(radialSegments);
+			tubularSegments = Math.floor(tubularSegments); // buffers
 
-					attribute.copyVector3sArray( geometry.normals );
-					attribute.needsUpdate = true;
+			const indices = [];
+			const vertices = [];
+			const normals = [];
+			const uvs = []; // helper variables
 
-				}
+			const center = new Vector3();
+			const vertex = new Vector3();
+			const normal = new Vector3(); // generate vertices, normals and uvs
 
-				geometry.normalsNeedUpdate = false;
+			for (let j = 0; j <= radialSegments; j++) {
+				for (let i = 0; i <= tubularSegments; i++) {
+					const u = i / tubularSegments * arc;
+					const v = j / radialSegments * Math.PI * 2; // vertex
 
-			}
+					vertex.x = (radius + tube * Math.cos(v)) * Math.cos(u);
+					vertex.y = (radius + tube * Math.cos(v)) * Math.sin(u);
+					vertex.z = tube * Math.sin(v);
+					vertices.push(vertex.x, vertex.y, vertex.z); // normal
 
-			if ( geometry.colorsNeedUpdate === true ) {
+					center.x = radius * Math.cos(u);
+					center.y = radius * Math.sin(u);
+					normal.subVectors(vertex, center).normalize();
+					normals.push(normal.x, normal.y, normal.z); // uv
 
-				attribute = this.attributes.color;
+					uvs.push(i / tubularSegments);
+					uvs.push(j / radialSegments);
+				}
+			} // generate indices
 
-				if ( attribute !== undefined ) {
 
-					attribute.copyColorsArray( geometry.colors );
-					attribute.needsUpdate = true;
+			for (let j = 1; j <= radialSegments; j++) {
+				for (let i = 1; i <= tubularSegments; i++) {
+					// indices
+					const a = (tubularSegments + 1) * j + i - 1;
+					const b = (tubularSegments + 1) * (j - 1) + i - 1;
+					const c = (tubularSegments + 1) * (j - 1) + i;
+					const d = (tubularSegments + 1) * j + i; // faces
 
+					indices.push(a, b, d);
+					indices.push(b, c, d);
 				}
+			} // build geometry
 
-				geometry.colorsNeedUpdate = false;
 
-			}
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+		}
+
+		static fromJSON(data) {
+			return new TorusGeometry(data.radius, data.tube, data.radialSegments, data.tubularSegments, data.arc);
+		}
 
-			if ( geometry.uvsNeedUpdate ) {
+	}
 
-				attribute = this.attributes.uv;
+	class TorusKnotGeometry extends BufferGeometry {
+		constructor(radius = 1, tube = 0.4, tubularSegments = 64, radialSegments = 8, p = 2, q = 3) {
+			super();
+			this.type = 'TorusKnotGeometry';
+			this.parameters = {
+				radius: radius,
+				tube: tube,
+				tubularSegments: tubularSegments,
+				radialSegments: radialSegments,
+				p: p,
+				q: q
+			};
+			tubularSegments = Math.floor(tubularSegments);
+			radialSegments = Math.floor(radialSegments); // buffers
 
-				if ( attribute !== undefined ) {
+			const indices = [];
+			const vertices = [];
+			const normals = [];
+			const uvs = []; // helper variables
 
-					attribute.copyVector2sArray( geometry.uvs );
-					attribute.needsUpdate = true;
+			const vertex = new Vector3();
+			const normal = new Vector3();
+			const P1 = new Vector3();
+			const P2 = new Vector3();
+			const B = new Vector3();
+			const T = new Vector3();
+			const N = new Vector3(); // generate vertices, normals and uvs
 
-				}
+			for (let i = 0; i <= tubularSegments; ++i) {
+				// the radian "u" is used to calculate the position on the torus curve of the current tubular segement
+				const u = i / tubularSegments * p * Math.PI * 2; // now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.
+				// these points are used to create a special "coordinate space", which is necessary to calculate the correct vertex positions
 
-				geometry.uvsNeedUpdate = false;
+				calculatePositionOnCurve(u, p, q, radius, P1);
+				calculatePositionOnCurve(u + 0.01, p, q, radius, P2); // calculate orthonormal basis
 
-			}
+				T.subVectors(P2, P1);
+				N.addVectors(P2, P1);
+				B.crossVectors(T, N);
+				N.crossVectors(B, T); // normalize B, N. T can be ignored, we don't use it
 
-			if ( geometry.lineDistancesNeedUpdate ) {
+				B.normalize();
+				N.normalize();
 
-				attribute = this.attributes.lineDistance;
+				for (let j = 0; j <= radialSegments; ++j) {
+					// now calculate the vertices. they are nothing more than an extrusion of the torus curve.
+					// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.
+					const v = j / radialSegments * Math.PI * 2;
+					const cx = -tube * Math.cos(v);
+					const cy = tube * Math.sin(v); // now calculate the final vertex position.
+					// first we orient the extrusion with our basis vectos, then we add it to the current position on the curve
 
-				if ( attribute !== undefined ) {
+					vertex.x = P1.x + (cx * N.x + cy * B.x);
+					vertex.y = P1.y + (cx * N.y + cy * B.y);
+					vertex.z = P1.z + (cx * N.z + cy * B.z);
+					vertices.push(vertex.x, vertex.y, vertex.z); // normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)
 
-					attribute.copyArray( geometry.lineDistances );
-					attribute.needsUpdate = true;
+					normal.subVectors(vertex, P1).normalize();
+					normals.push(normal.x, normal.y, normal.z); // uv
 
+					uvs.push(i / tubularSegments);
+					uvs.push(j / radialSegments);
 				}
+			} // generate indices
 
-				geometry.lineDistancesNeedUpdate = false;
 
-			}
+			for (let j = 1; j <= tubularSegments; j++) {
+				for (let i = 1; i <= radialSegments; i++) {
+					// indices
+					const a = (radialSegments + 1) * (j - 1) + (i - 1);
+					const b = (radialSegments + 1) * j + (i - 1);
+					const c = (radialSegments + 1) * j + i;
+					const d = (radialSegments + 1) * (j - 1) + i; // faces
 
-			if ( geometry.groupsNeedUpdate ) {
+					indices.push(a, b, d);
+					indices.push(b, c, d);
+				}
+			} // build geometry
 
-				geometry.computeGroups( object.geometry );
-				this.groups = geometry.groups;
 
-				geometry.groupsNeedUpdate = false;
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // this function calculates the current position on the torus curve
 
+			function calculatePositionOnCurve(u, p, q, radius, position) {
+				const cu = Math.cos(u);
+				const su = Math.sin(u);
+				const quOverP = q / p * u;
+				const cs = Math.cos(quOverP);
+				position.x = radius * (2 + cs) * 0.5 * cu;
+				position.y = radius * (2 + cs) * su * 0.5;
+				position.z = radius * Math.sin(quOverP) * 0.5;
 			}
+		}
 
-			return this;
-
-		},
-
-		fromGeometry: function ( geometry ) {
-
-			geometry.__directGeometry = new DirectGeometry().fromGeometry( geometry );
-
-			return this.fromDirectGeometry( geometry.__directGeometry );
+		static fromJSON(data) {
+			return new TorusKnotGeometry(data.radius, data.tube, data.tubularSegments, data.radialSegments, data.p, data.q);
+		}
 
-		},
+	}
 
-		fromDirectGeometry: function ( geometry ) {
+	class TubeGeometry extends BufferGeometry {
+		constructor(path, tubularSegments = 64, radius = 1, radialSegments = 8, closed = false) {
+			super();
+			this.type = 'TubeGeometry';
+			this.parameters = {
+				path: path,
+				tubularSegments: tubularSegments,
+				radius: radius,
+				radialSegments: radialSegments,
+				closed: closed
+			};
+			const frames = path.computeFrenetFrames(tubularSegments, closed); // expose internals
+
+			this.tangents = frames.tangents;
+			this.normals = frames.normals;
+			this.binormals = frames.binormals; // helper variables
+
+			const vertex = new Vector3();
+			const normal = new Vector3();
+			const uv = new Vector2();
+			let P = new Vector3(); // buffer
+
+			const vertices = [];
+			const normals = [];
+			const uvs = [];
+			const indices = []; // create buffer data
+
+			generateBufferData(); // build geometry
+
+			this.setIndex(indices);
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+			this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // functions
+
+			function generateBufferData() {
+				for (let i = 0; i < tubularSegments; i++) {
+					generateSegment(i);
+				} // if the geometry is not closed, generate the last row of vertices and normals
+				// at the regular position on the given path
+				//
+				// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)
 
-			var positions = new Float32Array( geometry.vertices.length * 3 );
-			this.addAttribute( 'position', new BufferAttribute( positions, 3 ).copyVector3sArray( geometry.vertices ) );
 
-			if ( geometry.normals.length > 0 ) {
+				generateSegment(closed === false ? tubularSegments : 0); // uvs are generated in a separate function.
+				// this makes it easy compute correct values for closed geometries
 
-				var normals = new Float32Array( geometry.normals.length * 3 );
-				this.addAttribute( 'normal', new BufferAttribute( normals, 3 ).copyVector3sArray( geometry.normals ) );
+				generateUVs(); // finally create faces
 
+				generateIndices();
 			}
 
-			if ( geometry.colors.length > 0 ) {
+			function generateSegment(i) {
+				// we use getPointAt to sample evenly distributed points from the given path
+				P = path.getPointAt(i / tubularSegments, P); // retrieve corresponding normal and binormal
 
-				var colors = new Float32Array( geometry.colors.length * 3 );
-				this.addAttribute( 'color', new BufferAttribute( colors, 3 ).copyColorsArray( geometry.colors ) );
-
-			}
+				const N = frames.normals[i];
+				const B = frames.binormals[i]; // generate normals and vertices for the current segment
 
-			if ( geometry.uvs.length > 0 ) {
+				for (let j = 0; j <= radialSegments; j++) {
+					const v = j / radialSegments * Math.PI * 2;
+					const sin = Math.sin(v);
+					const cos = -Math.cos(v); // normal
 
-				var uvs = new Float32Array( geometry.uvs.length * 2 );
-				this.addAttribute( 'uv', new BufferAttribute( uvs, 2 ).copyVector2sArray( geometry.uvs ) );
+					normal.x = cos * N.x + sin * B.x;
+					normal.y = cos * N.y + sin * B.y;
+					normal.z = cos * N.z + sin * B.z;
+					normal.normalize();
+					normals.push(normal.x, normal.y, normal.z); // vertex
 
+					vertex.x = P.x + radius * normal.x;
+					vertex.y = P.y + radius * normal.y;
+					vertex.z = P.z + radius * normal.z;
+					vertices.push(vertex.x, vertex.y, vertex.z);
+				}
 			}
 
-			if ( geometry.uvs2.length > 0 ) {
-
-				var uvs2 = new Float32Array( geometry.uvs2.length * 2 );
-				this.addAttribute( 'uv2', new BufferAttribute( uvs2, 2 ).copyVector2sArray( geometry.uvs2 ) );
+			function generateIndices() {
+				for (let j = 1; j <= tubularSegments; j++) {
+					for (let i = 1; i <= radialSegments; i++) {
+						const a = (radialSegments + 1) * (j - 1) + (i - 1);
+						const b = (radialSegments + 1) * j + (i - 1);
+						const c = (radialSegments + 1) * j + i;
+						const d = (radialSegments + 1) * (j - 1) + i; // faces
 
+						indices.push(a, b, d);
+						indices.push(b, c, d);
+					}
+				}
 			}
 
-			// groups
+			function generateUVs() {
+				for (let i = 0; i <= tubularSegments; i++) {
+					for (let j = 0; j <= radialSegments; j++) {
+						uv.x = i / tubularSegments;
+						uv.y = j / radialSegments;
+						uvs.push(uv.x, uv.y);
+					}
+				}
+			}
+		}
 
-			this.groups = geometry.groups;
+		toJSON() {
+			const data = super.toJSON();
+			data.path = this.parameters.path.toJSON();
+			return data;
+		}
 
-			// morphs
+		static fromJSON(data) {
+			// This only works for built-in curves (e.g. CatmullRomCurve3).
+			// User defined curves or instances of CurvePath will not be deserialized.
+			return new TubeGeometry(new Curves[data.path.type]().fromJSON(data.path), data.tubularSegments, data.radius, data.radialSegments, data.closed);
+		}
 
-			for ( var name in geometry.morphTargets ) {
+	}
 
-				var array = [];
-				var morphTargets = geometry.morphTargets[ name ];
+	class WireframeGeometry extends BufferGeometry {
+		constructor(geometry) {
+			super();
+			this.type = 'WireframeGeometry';
 
-				for ( var i = 0, l = morphTargets.length; i < l; i ++ ) {
+			if (geometry.isGeometry === true) {
+				console.error('THREE.WireframeGeometry no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+				return;
+			} // buffer
 
-					var morphTarget = morphTargets[ i ];
 
-					var attribute = new Float32BufferAttribute( morphTarget.length * 3, 3 );
+			const vertices = []; // helper variables
 
-					array.push( attribute.copyVector3sArray( morphTarget ) );
+			const edge = [0, 0],
+						edges = {};
+			const vertex = new Vector3();
 
-				}
+			if (geometry.index !== null) {
+				// indexed BufferGeometry
+				const position = geometry.attributes.position;
+				const indices = geometry.index;
+				let groups = geometry.groups;
+
+				if (groups.length === 0) {
+					groups = [{
+						start: 0,
+						count: indices.count,
+						materialIndex: 0
+					}];
+				} // create a data structure that contains all eges without duplicates
+
+
+				for (let o = 0, ol = groups.length; o < ol; ++o) {
+					const group = groups[o];
+					const start = group.start;
+					const count = group.count;
+
+					for (let i = start, l = start + count; i < l; i += 3) {
+						for (let j = 0; j < 3; j++) {
+							const edge1 = indices.getX(i + j);
+							const edge2 = indices.getX(i + (j + 1) % 3);
+							edge[0] = Math.min(edge1, edge2); // sorting prevents duplicates
+
+							edge[1] = Math.max(edge1, edge2);
+							const key = edge[0] + ',' + edge[1];
+
+							if (edges[key] === undefined) {
+								edges[key] = {
+									index1: edge[0],
+									index2: edge[1]
+								};
+							}
+						}
+					}
+				} // generate vertices
 
-				this.morphAttributes[ name ] = array;
 
-			}
+				for (const key in edges) {
+					const e = edges[key];
+					vertex.fromBufferAttribute(position, e.index1);
+					vertices.push(vertex.x, vertex.y, vertex.z);
+					vertex.fromBufferAttribute(position, e.index2);
+					vertices.push(vertex.x, vertex.y, vertex.z);
+				}
+			} else {
+				// non-indexed BufferGeometry
+				const position = geometry.attributes.position;
 
-			// skinning
+				for (let i = 0, l = position.count / 3; i < l; i++) {
+					for (let j = 0; j < 3; j++) {
+						// three edges per triangle, an edge is represented as (index1, index2)
+						// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)
+						const index1 = 3 * i + j;
+						vertex.fromBufferAttribute(position, index1);
+						vertices.push(vertex.x, vertex.y, vertex.z);
+						const index2 = 3 * i + (j + 1) % 3;
+						vertex.fromBufferAttribute(position, index2);
+						vertices.push(vertex.x, vertex.y, vertex.z);
+					}
+				}
+			} // build geometry
 
-			if ( geometry.skinIndices.length > 0 ) {
 
-				var skinIndices = new Float32BufferAttribute( geometry.skinIndices.length * 4, 4 );
-				this.addAttribute( 'skinIndex', skinIndices.copyVector4sArray( geometry.skinIndices ) );
+			this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+		}
 
-			}
+	}
 
-			if ( geometry.skinWeights.length > 0 ) {
+	var Geometries = /*#__PURE__*/Object.freeze({
+		__proto__: null,
+		BoxGeometry: BoxGeometry,
+		BoxBufferGeometry: BoxGeometry,
+		CircleGeometry: CircleGeometry,
+		CircleBufferGeometry: CircleGeometry,
+		ConeGeometry: ConeGeometry,
+		ConeBufferGeometry: ConeGeometry,
+		CylinderGeometry: CylinderGeometry,
+		CylinderBufferGeometry: CylinderGeometry,
+		DodecahedronGeometry: DodecahedronGeometry,
+		DodecahedronBufferGeometry: DodecahedronGeometry,
+		EdgesGeometry: EdgesGeometry,
+		ExtrudeGeometry: ExtrudeGeometry,
+		ExtrudeBufferGeometry: ExtrudeGeometry,
+		IcosahedronGeometry: IcosahedronGeometry,
+		IcosahedronBufferGeometry: IcosahedronGeometry,
+		LatheGeometry: LatheGeometry,
+		LatheBufferGeometry: LatheGeometry,
+		OctahedronGeometry: OctahedronGeometry,
+		OctahedronBufferGeometry: OctahedronGeometry,
+		ParametricGeometry: ParametricGeometry,
+		ParametricBufferGeometry: ParametricGeometry,
+		PlaneGeometry: PlaneGeometry,
+		PlaneBufferGeometry: PlaneGeometry,
+		PolyhedronGeometry: PolyhedronGeometry,
+		PolyhedronBufferGeometry: PolyhedronGeometry,
+		RingGeometry: RingGeometry,
+		RingBufferGeometry: RingGeometry,
+		ShapeGeometry: ShapeGeometry,
+		ShapeBufferGeometry: ShapeGeometry,
+		SphereGeometry: SphereGeometry,
+		SphereBufferGeometry: SphereGeometry,
+		TetrahedronGeometry: TetrahedronGeometry,
+		TetrahedronBufferGeometry: TetrahedronGeometry,
+		TextGeometry: TextGeometry,
+		TextBufferGeometry: TextGeometry,
+		TorusGeometry: TorusGeometry,
+		TorusBufferGeometry: TorusGeometry,
+		TorusKnotGeometry: TorusKnotGeometry,
+		TorusKnotBufferGeometry: TorusKnotGeometry,
+		TubeGeometry: TubeGeometry,
+		TubeBufferGeometry: TubeGeometry,
+		WireframeGeometry: WireframeGeometry
+	});
 
-				var skinWeights = new Float32BufferAttribute( geometry.skinWeights.length * 4, 4 );
-				this.addAttribute( 'skinWeight', skinWeights.copyVector4sArray( geometry.skinWeights ) );
+	/**
+	 * parameters = {
+	 *	color: <THREE.Color>
+	 * }
+	 */
 
-			}
+	class ShadowMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'ShadowMaterial';
+			this.color = new Color(0x000000);
+			this.transparent = true;
+			this.setValues(parameters);
+		}
 
-			//
+		copy(source) {
+			super.copy(source);
+			this.color.copy(source.color);
+			return this;
+		}
 
-			if ( geometry.boundingSphere !== null ) {
+	}
 
-				this.boundingSphere = geometry.boundingSphere.clone();
+	ShadowMaterial.prototype.isShadowMaterial = true;
 
-			}
+	class RawShaderMaterial extends ShaderMaterial {
+		constructor(parameters) {
+			super(parameters);
+			this.type = 'RawShaderMaterial';
+		}
 
-			if ( geometry.boundingBox !== null ) {
+	}
 
-				this.boundingBox = geometry.boundingBox.clone();
+	RawShaderMaterial.prototype.isRawShaderMaterial = true;
 
-			}
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	roughness: <float>,
+	 *	metalness: <float>,
+	 *	opacity: <float>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	lightMap: new THREE.Texture( <Image> ),
+	 *	lightMapIntensity: <float>
+	 *
+	 *	aoMap: new THREE.Texture( <Image> ),
+	 *	aoMapIntensity: <float>
+	 *
+	 *	emissive: <hex>,
+	 *	emissiveIntensity: <float>
+	 *	emissiveMap: new THREE.Texture( <Image> ),
+	 *
+	 *	bumpMap: new THREE.Texture( <Image> ),
+	 *	bumpScale: <float>,
+	 *
+	 *	normalMap: new THREE.Texture( <Image> ),
+	 *	normalMapType: THREE.TangentSpaceNormalMap,
+	 *	normalScale: <Vector2>,
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	roughnessMap: new THREE.Texture( <Image> ),
+	 *
+	 *	metalnessMap: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
+	 *	envMapIntensity: <float>
+	 *
+	 *	refractionRatio: <float>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>,
+	 *
+	 *	flatShading: <bool>
+	 * }
+	 */
 
+	class MeshStandardMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.defines = {
+				'STANDARD': ''
+			};
+			this.type = 'MeshStandardMaterial';
+			this.color = new Color(0xffffff); // diffuse
+
+			this.roughness = 1.0;
+			this.metalness = 0.0;
+			this.map = null;
+			this.lightMap = null;
+			this.lightMapIntensity = 1.0;
+			this.aoMap = null;
+			this.aoMapIntensity = 1.0;
+			this.emissive = new Color(0x000000);
+			this.emissiveIntensity = 1.0;
+			this.emissiveMap = null;
+			this.bumpMap = null;
+			this.bumpScale = 1;
+			this.normalMap = null;
+			this.normalMapType = TangentSpaceNormalMap;
+			this.normalScale = new Vector2(1, 1);
+			this.displacementMap = null;
+			this.displacementScale = 1;
+			this.displacementBias = 0;
+			this.roughnessMap = null;
+			this.metalnessMap = null;
+			this.alphaMap = null;
+			this.envMap = null;
+			this.envMapIntensity = 1.0;
+			this.refractionRatio = 0.98;
+			this.wireframe = false;
+			this.wireframeLinewidth = 1;
+			this.wireframeLinecap = 'round';
+			this.wireframeLinejoin = 'round';
+			this.morphTargets = false;
+			this.morphNormals = false;
+			this.flatShading = false;
+			this.vertexTangents = false;
+			this.setValues(parameters);
+		}
+
+		copy(source) {
+			super.copy(source);
+			this.defines = {
+				'STANDARD': ''
+			};
+			this.color.copy(source.color);
+			this.roughness = source.roughness;
+			this.metalness = source.metalness;
+			this.map = source.map;
+			this.lightMap = source.lightMap;
+			this.lightMapIntensity = source.lightMapIntensity;
+			this.aoMap = source.aoMap;
+			this.aoMapIntensity = source.aoMapIntensity;
+			this.emissive.copy(source.emissive);
+			this.emissiveMap = source.emissiveMap;
+			this.emissiveIntensity = source.emissiveIntensity;
+			this.bumpMap = source.bumpMap;
+			this.bumpScale = source.bumpScale;
+			this.normalMap = source.normalMap;
+			this.normalMapType = source.normalMapType;
+			this.normalScale.copy(source.normalScale);
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.roughnessMap = source.roughnessMap;
+			this.metalnessMap = source.metalnessMap;
+			this.alphaMap = source.alphaMap;
+			this.envMap = source.envMap;
+			this.envMapIntensity = source.envMapIntensity;
+			this.refractionRatio = source.refractionRatio;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.wireframeLinecap = source.wireframeLinecap;
+			this.wireframeLinejoin = source.wireframeLinejoin;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			this.flatShading = source.flatShading;
+			this.vertexTangents = source.vertexTangents;
 			return this;
+		}
 
-		},
-
-		computeBoundingBox: function () {
-
-			if ( this.boundingBox === null ) {
-
-				this.boundingBox = new Box3();
-
-			}
-
-			var position = this.attributes.position;
+	}
 
-			if ( position !== undefined ) {
+	MeshStandardMaterial.prototype.isMeshStandardMaterial = true;
 
-				this.boundingBox.setFromBufferAttribute( position );
+	/**
+	 * parameters = {
+	 *	clearcoat: <float>,
+	 *	clearcoatMap: new THREE.Texture( <Image> ),
+	 *	clearcoatRoughness: <float>,
+	 *	clearcoatRoughnessMap: new THREE.Texture( <Image> ),
+	 *	clearcoatNormalScale: <Vector2>,
+	 *	clearcoatNormalMap: new THREE.Texture( <Image> ),
+	 *
+	 *	reflectivity: <float>,
+	 *	ior: <float>,
+	 *
+	 *	sheen: <Color>,
+	 *
+	 *	transmission: <float>,
+	 *	transmissionMap: new THREE.Texture( <Image> ),
+	 *
+	 *	thickness: <float>,
+	 *	thicknessMap: new THREE.Texture( <Image> ),
+	 *	attenuationDistance: <float>,
+	 *	attenuationColor: <Color>
+	 * }
+	 */
 
+	class MeshPhysicalMaterial extends MeshStandardMaterial {
+		constructor(parameters) {
+			super();
+			this.defines = {
+				'STANDARD': '',
+				'PHYSICAL': ''
+			};
+			this.type = 'MeshPhysicalMaterial';
+			this.clearcoat = 0.0;
+			this.clearcoatMap = null;
+			this.clearcoatRoughness = 0.0;
+			this.clearcoatRoughnessMap = null;
+			this.clearcoatNormalScale = new Vector2(1, 1);
+			this.clearcoatNormalMap = null;
+			this.reflectivity = 0.5; // maps to F0 = 0.04
+
+			Object.defineProperty(this, 'ior', {
+				get: function () {
+					return (1 + 0.4 * this.reflectivity) / (1 - 0.4 * this.reflectivity);
+				},
+				set: function (ior) {
+					this.reflectivity = clamp(2.5 * (ior - 1) / (ior + 1), 0, 1);
+				}
+			});
+			this.sheen = null; // null will disable sheen bsdf
+
+			this.transmission = 0.0;
+			this.transmissionMap = null;
+			this.thickness = 0.01;
+			this.thicknessMap = null;
+			this.attenuationDistance = 0.0;
+			this.attenuationColor = new Color(1, 1, 1);
+			this.setValues(parameters);
+		}
+
+		copy(source) {
+			super.copy(source);
+			this.defines = {
+				'STANDARD': '',
+				'PHYSICAL': ''
+			};
+			this.clearcoat = source.clearcoat;
+			this.clearcoatMap = source.clearcoatMap;
+			this.clearcoatRoughness = source.clearcoatRoughness;
+			this.clearcoatRoughnessMap = source.clearcoatRoughnessMap;
+			this.clearcoatNormalMap = source.clearcoatNormalMap;
+			this.clearcoatNormalScale.copy(source.clearcoatNormalScale);
+			this.reflectivity = source.reflectivity;
+
+			if (source.sheen) {
+				this.sheen = (this.sheen || new Color()).copy(source.sheen);
 			} else {
-
-				this.boundingBox.makeEmpty();
-
-			}
-
-			if ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {
-
-				console.error( 'THREE.BufferGeometry.computeBoundingBox: Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this );
-
+				this.sheen = null;
 			}
 
-		},
-
-		computeBoundingSphere: function () {
+			this.transmission = source.transmission;
+			this.transmissionMap = source.transmissionMap;
+			this.thickness = source.thickness;
+			this.thicknessMap = source.thicknessMap;
+			this.attenuationDistance = source.attenuationDistance;
+			this.attenuationColor.copy(source.attenuationColor);
+			return this;
+		}
 
-			var box = new Box3();
-			var vector = new Vector3();
+	}
 
-			return function computeBoundingSphere() {
+	MeshPhysicalMaterial.prototype.isMeshPhysicalMaterial = true;
 
-				if ( this.boundingSphere === null ) {
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	specular: <hex>,
+	 *	shininess: <float>,
+	 *	opacity: <float>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	lightMap: new THREE.Texture( <Image> ),
+	 *	lightMapIntensity: <float>
+	 *
+	 *	aoMap: new THREE.Texture( <Image> ),
+	 *	aoMapIntensity: <float>
+	 *
+	 *	emissive: <hex>,
+	 *	emissiveIntensity: <float>
+	 *	emissiveMap: new THREE.Texture( <Image> ),
+	 *
+	 *	bumpMap: new THREE.Texture( <Image> ),
+	 *	bumpScale: <float>,
+	 *
+	 *	normalMap: new THREE.Texture( <Image> ),
+	 *	normalMapType: THREE.TangentSpaceNormalMap,
+	 *	normalScale: <Vector2>,
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	specularMap: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
+	 *	combine: THREE.MultiplyOperation,
+	 *	reflectivity: <float>,
+	 *	refractionRatio: <float>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>,
+	 *
+	 *	flatShading: <bool>
+	 * }
+	 */
 
-					this.boundingSphere = new Sphere();
+	class MeshPhongMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'MeshPhongMaterial';
+			this.color = new Color(0xffffff); // diffuse
+
+			this.specular = new Color(0x111111);
+			this.shininess = 30;
+			this.map = null;
+			this.lightMap = null;
+			this.lightMapIntensity = 1.0;
+			this.aoMap = null;
+			this.aoMapIntensity = 1.0;
+			this.emissive = new Color(0x000000);
+			this.emissiveIntensity = 1.0;
+			this.emissiveMap = null;
+			this.bumpMap = null;
+			this.bumpScale = 1;
+			this.normalMap = null;
+			this.normalMapType = TangentSpaceNormalMap;
+			this.normalScale = new Vector2(1, 1);
+			this.displacementMap = null;
+			this.displacementScale = 1;
+			this.displacementBias = 0;
+			this.specularMap = null;
+			this.alphaMap = null;
+			this.envMap = null;
+			this.combine = MultiplyOperation;
+			this.reflectivity = 1;
+			this.refractionRatio = 0.98;
+			this.wireframe = false;
+			this.wireframeLinewidth = 1;
+			this.wireframeLinecap = 'round';
+			this.wireframeLinejoin = 'round';
+			this.morphTargets = false;
+			this.morphNormals = false;
+			this.flatShading = false;
+			this.setValues(parameters);
+		}
+
+		copy(source) {
+			super.copy(source);
+			this.color.copy(source.color);
+			this.specular.copy(source.specular);
+			this.shininess = source.shininess;
+			this.map = source.map;
+			this.lightMap = source.lightMap;
+			this.lightMapIntensity = source.lightMapIntensity;
+			this.aoMap = source.aoMap;
+			this.aoMapIntensity = source.aoMapIntensity;
+			this.emissive.copy(source.emissive);
+			this.emissiveMap = source.emissiveMap;
+			this.emissiveIntensity = source.emissiveIntensity;
+			this.bumpMap = source.bumpMap;
+			this.bumpScale = source.bumpScale;
+			this.normalMap = source.normalMap;
+			this.normalMapType = source.normalMapType;
+			this.normalScale.copy(source.normalScale);
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.specularMap = source.specularMap;
+			this.alphaMap = source.alphaMap;
+			this.envMap = source.envMap;
+			this.combine = source.combine;
+			this.reflectivity = source.reflectivity;
+			this.refractionRatio = source.refractionRatio;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.wireframeLinecap = source.wireframeLinecap;
+			this.wireframeLinejoin = source.wireframeLinejoin;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			this.flatShading = source.flatShading;
+			return this;
+		}
 
-				}
+	}
 
-				var position = this.attributes.position;
+	MeshPhongMaterial.prototype.isMeshPhongMaterial = true;
 
-				if ( position ) {
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *	gradientMap: new THREE.Texture( <Image> ),
+	 *
+	 *	lightMap: new THREE.Texture( <Image> ),
+	 *	lightMapIntensity: <float>
+	 *
+	 *	aoMap: new THREE.Texture( <Image> ),
+	 *	aoMapIntensity: <float>
+	 *
+	 *	emissive: <hex>,
+	 *	emissiveIntensity: <float>
+	 *	emissiveMap: new THREE.Texture( <Image> ),
+	 *
+	 *	bumpMap: new THREE.Texture( <Image> ),
+	 *	bumpScale: <float>,
+	 *
+	 *	normalMap: new THREE.Texture( <Image> ),
+	 *	normalMapType: THREE.TangentSpaceNormalMap,
+	 *	normalScale: <Vector2>,
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>
+	 * }
+	 */
 
-					var center = this.boundingSphere.center;
+	class MeshToonMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.defines = {
+				'TOON': ''
+			};
+			this.type = 'MeshToonMaterial';
+			this.color = new Color(0xffffff);
+			this.map = null;
+			this.gradientMap = null;
+			this.lightMap = null;
+			this.lightMapIntensity = 1.0;
+			this.aoMap = null;
+			this.aoMapIntensity = 1.0;
+			this.emissive = new Color(0x000000);
+			this.emissiveIntensity = 1.0;
+			this.emissiveMap = null;
+			this.bumpMap = null;
+			this.bumpScale = 1;
+			this.normalMap = null;
+			this.normalMapType = TangentSpaceNormalMap;
+			this.normalScale = new Vector2(1, 1);
+			this.displacementMap = null;
+			this.displacementScale = 1;
+			this.displacementBias = 0;
+			this.alphaMap = null;
+			this.wireframe = false;
+			this.wireframeLinewidth = 1;
+			this.wireframeLinecap = 'round';
+			this.wireframeLinejoin = 'round';
+			this.morphTargets = false;
+			this.morphNormals = false;
+			this.setValues(parameters);
+		}
+
+		copy(source) {
+			super.copy(source);
+			this.color.copy(source.color);
+			this.map = source.map;
+			this.gradientMap = source.gradientMap;
+			this.lightMap = source.lightMap;
+			this.lightMapIntensity = source.lightMapIntensity;
+			this.aoMap = source.aoMap;
+			this.aoMapIntensity = source.aoMapIntensity;
+			this.emissive.copy(source.emissive);
+			this.emissiveMap = source.emissiveMap;
+			this.emissiveIntensity = source.emissiveIntensity;
+			this.bumpMap = source.bumpMap;
+			this.bumpScale = source.bumpScale;
+			this.normalMap = source.normalMap;
+			this.normalMapType = source.normalMapType;
+			this.normalScale.copy(source.normalScale);
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.alphaMap = source.alphaMap;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.wireframeLinecap = source.wireframeLinecap;
+			this.wireframeLinejoin = source.wireframeLinejoin;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			return this;
+		}
 
-					box.setFromBufferAttribute( position );
-					box.getCenter( center );
+	}
 
-					// hoping to find a boundingSphere with a radius smaller than the
-					// boundingSphere of the boundingBox: sqrt(3) smaller in the best case
+	MeshToonMaterial.prototype.isMeshToonMaterial = true;
 
-					var maxRadiusSq = 0;
+	/**
+	 * parameters = {
+	 *	opacity: <float>,
+	 *
+	 *	bumpMap: new THREE.Texture( <Image> ),
+	 *	bumpScale: <float>,
+	 *
+	 *	normalMap: new THREE.Texture( <Image> ),
+	 *	normalMapType: THREE.TangentSpaceNormalMap,
+	 *	normalScale: <Vector2>,
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>
+	 *
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>,
+	 *
+	 *	flatShading: <bool>
+	 * }
+	 */
 
-					for ( var i = 0, il = position.count; i < il; i ++ ) {
+	class MeshNormalMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'MeshNormalMaterial';
+			this.bumpMap = null;
+			this.bumpScale = 1;
+			this.normalMap = null;
+			this.normalMapType = TangentSpaceNormalMap;
+			this.normalScale = new Vector2(1, 1);
+			this.displacementMap = null;
+			this.displacementScale = 1;
+			this.displacementBias = 0;
+			this.wireframe = false;
+			this.wireframeLinewidth = 1;
+			this.fog = false;
+			this.morphTargets = false;
+			this.morphNormals = false;
+			this.flatShading = false;
+			this.setValues(parameters);
+		}
+
+		copy(source) {
+			super.copy(source);
+			this.bumpMap = source.bumpMap;
+			this.bumpScale = source.bumpScale;
+			this.normalMap = source.normalMap;
+			this.normalMapType = source.normalMapType;
+			this.normalScale.copy(source.normalScale);
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			this.flatShading = source.flatShading;
+			return this;
+		}
 
-						vector.x = position.getX( i );
-						vector.y = position.getY( i );
-						vector.z = position.getZ( i );
-						maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( vector ) );
+	}
 
-					}
+	MeshNormalMaterial.prototype.isMeshNormalMaterial = true;
 
-					this.boundingSphere.radius = Math.sqrt( maxRadiusSq );
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	lightMap: new THREE.Texture( <Image> ),
+	 *	lightMapIntensity: <float>
+	 *
+	 *	aoMap: new THREE.Texture( <Image> ),
+	 *	aoMapIntensity: <float>
+	 *
+	 *	emissive: <hex>,
+	 *	emissiveIntensity: <float>
+	 *	emissiveMap: new THREE.Texture( <Image> ),
+	 *
+	 *	specularMap: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
+	 *	combine: THREE.Multiply,
+	 *	reflectivity: <float>,
+	 *	refractionRatio: <float>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>
+	 * }
+	 */
 
-					if ( isNaN( this.boundingSphere.radius ) ) {
+	class MeshLambertMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.type = 'MeshLambertMaterial';
+			this.color = new Color(0xffffff); // diffuse
+
+			this.map = null;
+			this.lightMap = null;
+			this.lightMapIntensity = 1.0;
+			this.aoMap = null;
+			this.aoMapIntensity = 1.0;
+			this.emissive = new Color(0x000000);
+			this.emissiveIntensity = 1.0;
+			this.emissiveMap = null;
+			this.specularMap = null;
+			this.alphaMap = null;
+			this.envMap = null;
+			this.combine = MultiplyOperation;
+			this.reflectivity = 1;
+			this.refractionRatio = 0.98;
+			this.wireframe = false;
+			this.wireframeLinewidth = 1;
+			this.wireframeLinecap = 'round';
+			this.wireframeLinejoin = 'round';
+			this.morphTargets = false;
+			this.morphNormals = false;
+			this.setValues(parameters);
+		}
+
+		copy(source) {
+			super.copy(source);
+			this.color.copy(source.color);
+			this.map = source.map;
+			this.lightMap = source.lightMap;
+			this.lightMapIntensity = source.lightMapIntensity;
+			this.aoMap = source.aoMap;
+			this.aoMapIntensity = source.aoMapIntensity;
+			this.emissive.copy(source.emissive);
+			this.emissiveMap = source.emissiveMap;
+			this.emissiveIntensity = source.emissiveIntensity;
+			this.specularMap = source.specularMap;
+			this.alphaMap = source.alphaMap;
+			this.envMap = source.envMap;
+			this.combine = source.combine;
+			this.reflectivity = source.reflectivity;
+			this.refractionRatio = source.refractionRatio;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.wireframeLinecap = source.wireframeLinecap;
+			this.wireframeLinejoin = source.wireframeLinejoin;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			return this;
+		}
 
-						console.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this );
+	}
 
-					}
+	MeshLambertMaterial.prototype.isMeshLambertMaterial = true;
 
-				}
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *
+	 *	matcap: new THREE.Texture( <Image> ),
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	bumpMap: new THREE.Texture( <Image> ),
+	 *	bumpScale: <float>,
+	 *
+	 *	normalMap: new THREE.Texture( <Image> ),
+	 *	normalMapType: THREE.TangentSpaceNormalMap,
+	 *	normalScale: <Vector2>,
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>
+	 *
+	 *	flatShading: <bool>
+	 * }
+	 */
 
+	class MeshMatcapMaterial extends Material {
+		constructor(parameters) {
+			super();
+			this.defines = {
+				'MATCAP': ''
 			};
+			this.type = 'MeshMatcapMaterial';
+			this.color = new Color(0xffffff); // diffuse
+
+			this.matcap = null;
+			this.map = null;
+			this.bumpMap = null;
+			this.bumpScale = 1;
+			this.normalMap = null;
+			this.normalMapType = TangentSpaceNormalMap;
+			this.normalScale = new Vector2(1, 1);
+			this.displacementMap = null;
+			this.displacementScale = 1;
+			this.displacementBias = 0;
+			this.alphaMap = null;
+			this.morphTargets = false;
+			this.morphNormals = false;
+			this.flatShading = false;
+			this.setValues(parameters);
+		}
+
+		copy(source) {
+			super.copy(source);
+			this.defines = {
+				'MATCAP': ''
+			};
+			this.color.copy(source.color);
+			this.matcap = source.matcap;
+			this.map = source.map;
+			this.bumpMap = source.bumpMap;
+			this.bumpScale = source.bumpScale;
+			this.normalMap = source.normalMap;
+			this.normalMapType = source.normalMapType;
+			this.normalScale.copy(source.normalScale);
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.alphaMap = source.alphaMap;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			this.flatShading = source.flatShading;
+			return this;
+		}
 
-		}(),
-
-		computeFaceNormals: function () {
-
-			// backwards compatibility
-
-		},
-
-		computeVertexNormals: function () {
-
-			var index = this.index;
-			var attributes = this.attributes;
-			var groups = this.groups;
-
-			if ( attributes.position ) {
-
-				var positions = attributes.position.array;
-
-				if ( attributes.normal === undefined ) {
-
-					this.addAttribute( 'normal', new BufferAttribute( new Float32Array( positions.length ), 3 ) );
+	}
 
-				} else {
+	MeshMatcapMaterial.prototype.isMeshMatcapMaterial = true;
 
-					// reset existing normals to zero
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *
+	 *	linewidth: <float>,
+	 *
+	 *	scale: <float>,
+	 *	dashSize: <float>,
+	 *	gapSize: <float>
+	 * }
+	 */
 
-					var array = attributes.normal.array;
+	class LineDashedMaterial extends LineBasicMaterial {
+		constructor(parameters) {
+			super();
+			this.type = 'LineDashedMaterial';
+			this.scale = 1;
+			this.dashSize = 3;
+			this.gapSize = 1;
+			this.setValues(parameters);
+		}
 
-					for ( var i = 0, il = array.length; i < il; i ++ ) {
+		copy(source) {
+			super.copy(source);
+			this.scale = source.scale;
+			this.dashSize = source.dashSize;
+			this.gapSize = source.gapSize;
+			return this;
+		}
 
-						array[ i ] = 0;
+	}
 
-					}
+	LineDashedMaterial.prototype.isLineDashedMaterial = true;
 
-				}
-
-				var normals = attributes.normal.array;
-
-				var vA, vB, vC;
-				var pA = new Vector3(), pB = new Vector3(), pC = new Vector3();
-				var cb = new Vector3(), ab = new Vector3();
-
-				// indexed elements
+	var Materials = /*#__PURE__*/Object.freeze({
+		__proto__: null,
+		ShadowMaterial: ShadowMaterial,
+		SpriteMaterial: SpriteMaterial,
+		RawShaderMaterial: RawShaderMaterial,
+		ShaderMaterial: ShaderMaterial,
+		PointsMaterial: PointsMaterial,
+		MeshPhysicalMaterial: MeshPhysicalMaterial,
+		MeshStandardMaterial: MeshStandardMaterial,
+		MeshPhongMaterial: MeshPhongMaterial,
+		MeshToonMaterial: MeshToonMaterial,
+		MeshNormalMaterial: MeshNormalMaterial,
+		MeshLambertMaterial: MeshLambertMaterial,
+		MeshDepthMaterial: MeshDepthMaterial,
+		MeshDistanceMaterial: MeshDistanceMaterial,
+		MeshBasicMaterial: MeshBasicMaterial,
+		MeshMatcapMaterial: MeshMatcapMaterial,
+		LineDashedMaterial: LineDashedMaterial,
+		LineBasicMaterial: LineBasicMaterial,
+		Material: Material
+	});
 
-				if ( index ) {
+	const AnimationUtils = {
+		// same as Array.prototype.slice, but also works on typed arrays
+		arraySlice: function (array, from, to) {
+			if (AnimationUtils.isTypedArray(array)) {
+				// in ios9 array.subarray(from, undefined) will return empty array
+				// but array.subarray(from) or array.subarray(from, len) is correct
+				return new array.constructor(array.subarray(from, to !== undefined ? to : array.length));
+			}
 
-					var indices = index.array;
+			return array.slice(from, to);
+		},
+		// converts an array to a specific type
+		convertArray: function (array, type, forceClone) {
+			if (!array || // let 'undefined' and 'null' pass
+			!forceClone && array.constructor === type) return array;
 
-					if ( groups.length === 0 ) {
+			if (typeof type.BYTES_PER_ELEMENT === 'number') {
+				return new type(array); // create typed array
+			}
 
-						this.addGroup( 0, indices.length );
+			return Array.prototype.slice.call(array); // create Array
+		},
+		isTypedArray: function (object) {
+			return ArrayBuffer.isView(object) && !(object instanceof DataView);
+		},
+		// returns an array by which times and values can be sorted
+		getKeyframeOrder: function (times) {
+			function compareTime(i, j) {
+				return times[i] - times[j];
+			}
 
-					}
+			const n = times.length;
+			const result = new Array(n);
 
-					for ( var j = 0, jl = groups.length; j < jl; ++ j ) {
+			for (let i = 0; i !== n; ++i) result[i] = i;
 
-						var group = groups[ j ];
+			result.sort(compareTime);
+			return result;
+		},
+		// uses the array previously returned by 'getKeyframeOrder' to sort data
+		sortedArray: function (values, stride, order) {
+			const nValues = values.length;
+			const result = new values.constructor(nValues);
 
-						var start = group.start;
-						var count = group.count;
+			for (let i = 0, dstOffset = 0; dstOffset !== nValues; ++i) {
+				const srcOffset = order[i] * stride;
 
-						for ( var i = start, il = start + count; i < il; i += 3 ) {
+				for (let j = 0; j !== stride; ++j) {
+					result[dstOffset++] = values[srcOffset + j];
+				}
+			}
 
-							vA = indices[ i + 0 ] * 3;
-							vB = indices[ i + 1 ] * 3;
-							vC = indices[ i + 2 ] * 3;
+			return result;
+		},
+		// function for parsing AOS keyframe formats
+		flattenJSON: function (jsonKeys, times, values, valuePropertyName) {
+			let i = 1,
+					key = jsonKeys[0];
 
-							pA.fromArray( positions, vA );
-							pB.fromArray( positions, vB );
-							pC.fromArray( positions, vC );
+			while (key !== undefined && key[valuePropertyName] === undefined) {
+				key = jsonKeys[i++];
+			}
 
-							cb.subVectors( pC, pB );
-							ab.subVectors( pA, pB );
-							cb.cross( ab );
+			if (key === undefined) return; // no data
 
-							normals[ vA ] += cb.x;
-							normals[ vA + 1 ] += cb.y;
-							normals[ vA + 2 ] += cb.z;
+			let value = key[valuePropertyName];
+			if (value === undefined) return; // no data
 
-							normals[ vB ] += cb.x;
-							normals[ vB + 1 ] += cb.y;
-							normals[ vB + 2 ] += cb.z;
+			if (Array.isArray(value)) {
+				do {
+					value = key[valuePropertyName];
 
-							normals[ vC ] += cb.x;
-							normals[ vC + 1 ] += cb.y;
-							normals[ vC + 2 ] += cb.z;
+					if (value !== undefined) {
+						times.push(key.time);
+						values.push.apply(values, value); // push all elements
+					}
 
-						}
+					key = jsonKeys[i++];
+				} while (key !== undefined);
+			} else if (value.toArray !== undefined) {
+				// ...assume THREE.Math-ish
+				do {
+					value = key[valuePropertyName];
 
+					if (value !== undefined) {
+						times.push(key.time);
+						value.toArray(values, values.length);
 					}
 
-				} else {
+					key = jsonKeys[i++];
+				} while (key !== undefined);
+			} else {
+				// otherwise push as-is
+				do {
+					value = key[valuePropertyName];
 
-					// non-indexed elements (unconnected triangle soup)
+					if (value !== undefined) {
+						times.push(key.time);
+						values.push(value);
+					}
 
-					for ( var i = 0, il = positions.length; i < il; i += 9 ) {
+					key = jsonKeys[i++];
+				} while (key !== undefined);
+			}
+		},
+		subclip: function (sourceClip, name, startFrame, endFrame, fps = 30) {
+			const clip = sourceClip.clone();
+			clip.name = name;
+			const tracks = [];
 
-						pA.fromArray( positions, i );
-						pB.fromArray( positions, i + 3 );
-						pC.fromArray( positions, i + 6 );
+			for (let i = 0; i < clip.tracks.length; ++i) {
+				const track = clip.tracks[i];
+				const valueSize = track.getValueSize();
+				const times = [];
+				const values = [];
 
-						cb.subVectors( pC, pB );
-						ab.subVectors( pA, pB );
-						cb.cross( ab );
+				for (let j = 0; j < track.times.length; ++j) {
+					const frame = track.times[j] * fps;
+					if (frame < startFrame || frame >= endFrame) continue;
+					times.push(track.times[j]);
 
-						normals[ i ] = cb.x;
-						normals[ i + 1 ] = cb.y;
-						normals[ i + 2 ] = cb.z;
+					for (let k = 0; k < valueSize; ++k) {
+						values.push(track.values[j * valueSize + k]);
+					}
+				}
 
-						normals[ i + 3 ] = cb.x;
-						normals[ i + 4 ] = cb.y;
-						normals[ i + 5 ] = cb.z;
+				if (times.length === 0) continue;
+				track.times = AnimationUtils.convertArray(times, track.times.constructor);
+				track.values = AnimationUtils.convertArray(values, track.values.constructor);
+				tracks.push(track);
+			}
 
-						normals[ i + 6 ] = cb.x;
-						normals[ i + 7 ] = cb.y;
-						normals[ i + 8 ] = cb.z;
+			clip.tracks = tracks; // find minimum .times value across all tracks in the trimmed clip
 
-					}
+			let minStartTime = Infinity;
 
+			for (let i = 0; i < clip.tracks.length; ++i) {
+				if (minStartTime > clip.tracks[i].times[0]) {
+					minStartTime = clip.tracks[i].times[0];
 				}
+			} // shift all tracks such that clip begins at t=0
 
-				this.normalizeNormals();
-
-				attributes.normal.needsUpdate = true;
 
+			for (let i = 0; i < clip.tracks.length; ++i) {
+				clip.tracks[i].shift(-1 * minStartTime);
 			}
 
+			clip.resetDuration();
+			return clip;
 		},
+		makeClipAdditive: function (targetClip, referenceFrame = 0, referenceClip = targetClip, fps = 30) {
+			if (fps <= 0) fps = 30;
+			const numTracks = referenceClip.tracks.length;
+			const referenceTime = referenceFrame / fps; // Make each track's values relative to the values at the reference frame
 
-		merge: function ( geometry, offset ) {
-
-			if ( ! ( geometry && geometry.isBufferGeometry ) ) {
-
-				console.error( 'THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry );
-				return;
+			for (let i = 0; i < numTracks; ++i) {
+				const referenceTrack = referenceClip.tracks[i];
+				const referenceTrackType = referenceTrack.ValueTypeName; // Skip this track if it's non-numeric
 
-			}
+				if (referenceTrackType === 'bool' || referenceTrackType === 'string') continue; // Find the track in the target clip whose name and type matches the reference track
 
-			if ( offset === undefined ) {
+				const targetTrack = targetClip.tracks.find(function (track) {
+					return track.name === referenceTrack.name && track.ValueTypeName === referenceTrackType;
+				});
+				if (targetTrack === undefined) continue;
+				let referenceOffset = 0;
+				const referenceValueSize = referenceTrack.getValueSize();
 
-				offset = 0;
+				if (referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline) {
+					referenceOffset = referenceValueSize / 3;
+				}
 
-				console.warn(
-					'THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. '
-					+ 'Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge.'
-				);
+				let targetOffset = 0;
+				const targetValueSize = targetTrack.getValueSize();
 
-			}
+				if (targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline) {
+					targetOffset = targetValueSize / 3;
+				}
 
-			var attributes = this.attributes;
+				const lastIndex = referenceTrack.times.length - 1;
+				let referenceValue; // Find the value to subtract out of the track
 
-			for ( var key in attributes ) {
+				if (referenceTime <= referenceTrack.times[0]) {
+					// Reference frame is earlier than the first keyframe, so just use the first keyframe
+					const startIndex = referenceOffset;
+					const endIndex = referenceValueSize - referenceOffset;
+					referenceValue = AnimationUtils.arraySlice(referenceTrack.values, startIndex, endIndex);
+				} else if (referenceTime >= referenceTrack.times[lastIndex]) {
+					// Reference frame is after the last keyframe, so just use the last keyframe
+					const startIndex = lastIndex * referenceValueSize + referenceOffset;
+					const endIndex = startIndex + referenceValueSize - referenceOffset;
+					referenceValue = AnimationUtils.arraySlice(referenceTrack.values, startIndex, endIndex);
+				} else {
+					// Interpolate to the reference value
+					const interpolant = referenceTrack.createInterpolant();
+					const startIndex = referenceOffset;
+					const endIndex = referenceValueSize - referenceOffset;
+					interpolant.evaluate(referenceTime);
+					referenceValue = AnimationUtils.arraySlice(interpolant.resultBuffer, startIndex, endIndex);
+				} // Conjugate the quaternion
 
-				if ( geometry.attributes[ key ] === undefined ) continue;
 
-				var attribute1 = attributes[ key ];
-				var attributeArray1 = attribute1.array;
+				if (referenceTrackType === 'quaternion') {
+					const referenceQuat = new Quaternion().fromArray(referenceValue).normalize().conjugate();
+					referenceQuat.toArray(referenceValue);
+				} // Subtract the reference value from all of the track values
 
-				var attribute2 = geometry.attributes[ key ];
-				var attributeArray2 = attribute2.array;
 
-				var attributeSize = attribute2.itemSize;
+				const numTimes = targetTrack.times.length;
 
-				for ( var i = 0, j = attributeSize * offset; i < attributeArray2.length; i ++, j ++ ) {
+				for (let j = 0; j < numTimes; ++j) {
+					const valueStart = j * targetValueSize + targetOffset;
 
-					attributeArray1[ j ] = attributeArray2[ i ];
+					if (referenceTrackType === 'quaternion') {
+						// Multiply the conjugate for quaternion track types
+						Quaternion.multiplyQuaternionsFlat(targetTrack.values, valueStart, referenceValue, 0, targetTrack.values, valueStart);
+					} else {
+						const valueEnd = targetValueSize - targetOffset * 2; // Subtract each value for all other numeric track types
 
+						for (let k = 0; k < valueEnd; ++k) {
+							targetTrack.values[valueStart + k] -= referenceValue[k];
+						}
+					}
 				}
-
 			}
 
-			return this;
+			targetClip.blendMode = AdditiveAnimationBlendMode;
+			return targetClip;
+		}
+	};
 
-		},
+	/**
+	 * Abstract base class of interpolants over parametric samples.
+	 *
+	 * The parameter domain is one dimensional, typically the time or a path
+	 * along a curve defined by the data.
+	 *
+	 * The sample values can have any dimensionality and derived classes may
+	 * apply special interpretations to the data.
+	 *
+	 * This class provides the interval seek in a Template Method, deferring
+	 * the actual interpolation to derived classes.
+	 *
+	 * Time complexity is O(1) for linear access crossing at most two points
+	 * and O(log N) for random access, where N is the number of positions.
+	 *
+	 * References:
+	 *
+	 * 		http://www.oodesign.com/template-method-pattern.html
+	 *
+	 */
+	class Interpolant {
+		constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
+			this.parameterPositions = parameterPositions;
+			this._cachedIndex = 0;
+			this.resultBuffer = resultBuffer !== undefined ? resultBuffer : new sampleValues.constructor(sampleSize);
+			this.sampleValues = sampleValues;
+			this.valueSize = sampleSize;
+			this.settings = null;
+			this.DefaultSettings_ = {};
+		}
+
+		evaluate(t) {
+			const pp = this.parameterPositions;
+			let i1 = this._cachedIndex,
+					t1 = pp[i1],
+					t0 = pp[i1 - 1];
 
-		normalizeNormals: function () {
+			validate_interval: {
+				seek: {
+					let right;
 
-			var vector = new Vector3();
+					linear_scan: {
+						//- See http://jsperf.com/comparison-to-undefined/3
+						//- slower code:
+						//-
+						//- 				if ( t >= t1 || t1 === undefined ) {
+						forward_scan: if (!(t < t1)) {
+							for (let giveUpAt = i1 + 2;;) {
+								if (t1 === undefined) {
+									if (t < t0) break forward_scan; // after end
 
-			return function normalizeNormals() {
+									i1 = pp.length;
+									this._cachedIndex = i1;
+									return this.afterEnd_(i1 - 1, t, t0);
+								}
 
-				var normals = this.attributes.normal;
+								if (i1 === giveUpAt) break; // this loop
 
-				for ( var i = 0, il = normals.count; i < il; i ++ ) {
+								t0 = t1;
+								t1 = pp[++i1];
 
-					vector.x = normals.getX( i );
-					vector.y = normals.getY( i );
-					vector.z = normals.getZ( i );
+								if (t < t1) {
+									// we have arrived at the sought interval
+									break seek;
+								}
+							} // prepare binary search on the right side of the index
 
-					vector.normalize();
 
-					normals.setXYZ( i, vector.x, vector.y, vector.z );
+							right = pp.length;
+							break linear_scan;
+						} //- slower code:
+						//-					if ( t < t0 || t0 === undefined ) {
 
-				}
 
-			};
+						if (!(t >= t0)) {
+							// looping?
+							const t1global = pp[1];
 
-		}(),
+							if (t < t1global) {
+								i1 = 2; // + 1, using the scan for the details
 
-		toNonIndexed: function () {
+								t0 = t1global;
+							} // linear reverse scan
 
-			if ( this.index === null ) {
 
-				console.warn( 'THREE.BufferGeometry.toNonIndexed(): Geometry is already non-indexed.' );
-				return this;
+							for (let giveUpAt = i1 - 2;;) {
+								if (t0 === undefined) {
+									// before start
+									this._cachedIndex = 0;
+									return this.beforeStart_(0, t, t1);
+								}
 
-			}
+								if (i1 === giveUpAt) break; // this loop
 
-			var geometry2 = new BufferGeometry();
+								t1 = t0;
+								t0 = pp[--i1 - 1];
 
-			var indices = this.index.array;
-			var attributes = this.attributes;
+								if (t >= t0) {
+									// we have arrived at the sought interval
+									break seek;
+								}
+							} // prepare binary search on the left side of the index
 
-			for ( var name in attributes ) {
 
-				var attribute = attributes[ name ];
+							right = i1;
+							i1 = 0;
+							break linear_scan;
+						} // the interval is valid
 
-				var array = attribute.array;
-				var itemSize = attribute.itemSize;
 
-				var array2 = new array.constructor( indices.length * itemSize );
+						break validate_interval;
+					} // linear scan
+					// binary search
 
-				var index = 0, index2 = 0;
 
-				for ( var i = 0, l = indices.length; i < l; i ++ ) {
+					while (i1 < right) {
+						const mid = i1 + right >>> 1;
 
-					index = indices[ i ] * itemSize;
+						if (t < pp[mid]) {
+							right = mid;
+						} else {
+							i1 = mid + 1;
+						}
+					}
 
-					for ( var j = 0; j < itemSize; j ++ ) {
+					t1 = pp[i1];
+					t0 = pp[i1 - 1]; // check boundary cases, again
 
-						array2[ index2 ++ ] = array[ index ++ ];
+					if (t0 === undefined) {
+						this._cachedIndex = 0;
+						return this.beforeStart_(0, t, t1);
+					}
 
+					if (t1 === undefined) {
+						i1 = pp.length;
+						this._cachedIndex = i1;
+						return this.afterEnd_(i1 - 1, t0, t);
 					}
+				} // seek
 
-				}
 
-				geometry2.addAttribute( name, new BufferAttribute( array2, itemSize ) );
+				this._cachedIndex = i1;
+				this.intervalChanged_(i1, t0, t1);
+			} // validate_interval
 
-			}
 
-			var groups = this.groups;
+			return this.interpolate_(i1, t0, t, t1);
+		}
 
-			for ( var i = 0, l = groups.length; i < l; i ++ ) {
+		getSettings_() {
+			return this.settings || this.DefaultSettings_;
+		}
 
-				var group = groups[ i ];
-				geometry2.addGroup( group.start, group.count, group.materialIndex );
+		copySampleValue_(index) {
+			// copies a sample value to the result buffer
+			const result = this.resultBuffer,
+						values = this.sampleValues,
+						stride = this.valueSize,
+						offset = index * stride;
 
+			for (let i = 0; i !== stride; ++i) {
+				result[i] = values[offset + i];
 			}
 
-			return geometry2;
+			return result;
+		} // Template methods for derived classes:
 
-		},
 
-		toJSON: function () {
+		interpolate_()
+		/* i1, t0, t, t1 */
+		{
+			throw new Error('call to abstract method'); // implementations shall return this.resultBuffer
+		}
 
-			var data = {
-				metadata: {
-					version: 4.5,
-					type: 'BufferGeometry',
-					generator: 'BufferGeometry.toJSON'
-				}
-			};
+		intervalChanged_()
+		/* i1, t0, t1 */
+		{// empty
+		}
 
-			// standard BufferGeometry serialization
+	} // ALIAS DEFINITIONS
 
-			data.uuid = this.uuid;
-			data.type = this.type;
-			if ( this.name !== '' ) data.name = this.name;
 
-			if ( this.parameters !== undefined ) {
+	Interpolant.prototype.beforeStart_ = Interpolant.prototype.copySampleValue_;
+	Interpolant.prototype.afterEnd_ = Interpolant.prototype.copySampleValue_;
 
-				var parameters = this.parameters;
+	/**
+	 * Fast and simple cubic spline interpolant.
+	 *
+	 * It was derived from a Hermitian construction setting the first derivative
+	 * at each sample position to the linear slope between neighboring positions
+	 * over their parameter interval.
+	 */
 
-				for ( var key in parameters ) {
+	class CubicInterpolant extends Interpolant {
+		constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
+			super(parameterPositions, sampleValues, sampleSize, resultBuffer);
+			this._weightPrev = -0;
+			this._offsetPrev = -0;
+			this._weightNext = -0;
+			this._offsetNext = -0;
+			this.DefaultSettings_ = {
+				endingStart: ZeroCurvatureEnding,
+				endingEnd: ZeroCurvatureEnding
+			};
+		}
 
-					if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];
+		intervalChanged_(i1, t0, t1) {
+			const pp = this.parameterPositions;
+			let iPrev = i1 - 2,
+					iNext = i1 + 1,
+					tPrev = pp[iPrev],
+					tNext = pp[iNext];
 
-				}
+			if (tPrev === undefined) {
+				switch (this.getSettings_().endingStart) {
+					case ZeroSlopeEnding:
+						// f'(t0) = 0
+						iPrev = i1;
+						tPrev = 2 * t0 - t1;
+						break;
 
-				return data;
+					case WrapAroundEnding:
+						// use the other end of the curve
+						iPrev = pp.length - 2;
+						tPrev = t0 + pp[iPrev] - pp[iPrev + 1];
+						break;
 
+					default:
+						// ZeroCurvatureEnding
+						// f''(t0) = 0 a.k.a. Natural Spline
+						iPrev = i1;
+						tPrev = t1;
+				}
 			}
 
-			data.data = { attributes: {} };
+			if (tNext === undefined) {
+				switch (this.getSettings_().endingEnd) {
+					case ZeroSlopeEnding:
+						// f'(tN) = 0
+						iNext = i1;
+						tNext = 2 * t1 - t0;
+						break;
+
+					case WrapAroundEnding:
+						// use the other end of the curve
+						iNext = 1;
+						tNext = t1 + pp[1] - pp[0];
+						break;
 
-			var index = this.index;
+					default:
+						// ZeroCurvatureEnding
+						// f''(tN) = 0, a.k.a. Natural Spline
+						iNext = i1 - 1;
+						tNext = t0;
+				}
+			}
 
-			if ( index !== null ) {
+			const halfDt = (t1 - t0) * 0.5,
+						stride = this.valueSize;
+			this._weightPrev = halfDt / (t0 - tPrev);
+			this._weightNext = halfDt / (tNext - t1);
+			this._offsetPrev = iPrev * stride;
+			this._offsetNext = iNext * stride;
+		}
 
-				var array = Array.prototype.slice.call( index.array );
+		interpolate_(i1, t0, t, t1) {
+			const result = this.resultBuffer,
+						values = this.sampleValues,
+						stride = this.valueSize,
+						o1 = i1 * stride,
+						o0 = o1 - stride,
+						oP = this._offsetPrev,
+						oN = this._offsetNext,
+						wP = this._weightPrev,
+						wN = this._weightNext,
+						p = (t - t0) / (t1 - t0),
+						pp = p * p,
+						ppp = pp * p; // evaluate polynomials
 
-				data.data.index = {
-					type: index.array.constructor.name,
-					array: array
-				};
+			const sP = -wP * ppp + 2 * wP * pp - wP * p;
+			const s0 = (1 + wP) * ppp + (-1.5 - 2 * wP) * pp + (-0.5 + wP) * p + 1;
+			const s1 = (-1 - wN) * ppp + (1.5 + wN) * pp + 0.5 * p;
+			const sN = wN * ppp - wN * pp; // combine data linearly
 
+			for (let i = 0; i !== stride; ++i) {
+				result[i] = sP * values[oP + i] + s0 * values[o0 + i] + s1 * values[o1 + i] + sN * values[oN + i];
 			}
 
-			var attributes = this.attributes;
-
-			for ( var key in attributes ) {
+			return result;
+		}
 
-				var attribute = attributes[ key ];
+	}
 
-				var array = Array.prototype.slice.call( attribute.array );
+	class LinearInterpolant extends Interpolant {
+		constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
+			super(parameterPositions, sampleValues, sampleSize, resultBuffer);
+		}
 
-				data.data.attributes[ key ] = {
-					itemSize: attribute.itemSize,
-					type: attribute.array.constructor.name,
-					array: array,
-					normalized: attribute.normalized
-				};
+		interpolate_(i1, t0, t, t1) {
+			const result = this.resultBuffer,
+						values = this.sampleValues,
+						stride = this.valueSize,
+						offset1 = i1 * stride,
+						offset0 = offset1 - stride,
+						weight1 = (t - t0) / (t1 - t0),
+						weight0 = 1 - weight1;
 
+			for (let i = 0; i !== stride; ++i) {
+				result[i] = values[offset0 + i] * weight0 + values[offset1 + i] * weight1;
 			}
 
-			var groups = this.groups;
+			return result;
+		}
+
+	}
 
-			if ( groups.length > 0 ) {
+	/**
+	 *
+	 * Interpolant that evaluates to the sample value at the position preceeding
+	 * the parameter.
+	 */
 
-				data.data.groups = JSON.parse( JSON.stringify( groups ) );
+	class DiscreteInterpolant extends Interpolant {
+		constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
+			super(parameterPositions, sampleValues, sampleSize, resultBuffer);
+		}
 
-			}
+		interpolate_(i1
+		/*, t0, t, t1 */
+		) {
+			return this.copySampleValue_(i1 - 1);
+		}
 
-			var boundingSphere = this.boundingSphere;
+	}
 
-			if ( boundingSphere !== null ) {
+	class KeyframeTrack {
+		constructor(name, times, values, interpolation) {
+			if (name === undefined) throw new Error('THREE.KeyframeTrack: track name is undefined');
+			if (times === undefined || times.length === 0) throw new Error('THREE.KeyframeTrack: no keyframes in track named ' + name);
+			this.name = name;
+			this.times = AnimationUtils.convertArray(times, this.TimeBufferType);
+			this.values = AnimationUtils.convertArray(values, this.ValueBufferType);
+			this.setInterpolation(interpolation || this.DefaultInterpolation);
+		} // Serialization (in static context, because of constructor invocation
+		// and automatic invocation of .toJSON):
 
-				data.data.boundingSphere = {
-					center: boundingSphere.center.toArray(),
-					radius: boundingSphere.radius
+
+		static toJSON(track) {
+			const trackType = track.constructor;
+			let json; // derived classes can define a static toJSON method
+
+			if (trackType.toJSON !== this.toJSON) {
+				json = trackType.toJSON(track);
+			} else {
+				// by default, we assume the data can be serialized as-is
+				json = {
+					'name': track.name,
+					'times': AnimationUtils.convertArray(track.times, Array),
+					'values': AnimationUtils.convertArray(track.values, Array)
 				};
+				const interpolation = track.getInterpolation();
 
+				if (interpolation !== track.DefaultInterpolation) {
+					json.interpolation = interpolation;
+				}
 			}
 
-			return data;
+			json.type = track.ValueTypeName; // mandatory
 
-		},
+			return json;
+		}
 
-		clone: function () {
+		InterpolantFactoryMethodDiscrete(result) {
+			return new DiscreteInterpolant(this.times, this.values, this.getValueSize(), result);
+		}
 
-			/*
-			 // Handle primitives
+		InterpolantFactoryMethodLinear(result) {
+			return new LinearInterpolant(this.times, this.values, this.getValueSize(), result);
+		}
 
-			 var parameters = this.parameters;
+		InterpolantFactoryMethodSmooth(result) {
+			return new CubicInterpolant(this.times, this.values, this.getValueSize(), result);
+		}
 
-			 if ( parameters !== undefined ) {
+		setInterpolation(interpolation) {
+			let factoryMethod;
 
-			 var values = [];
-
-			 for ( var key in parameters ) {
-
-			 values.push( parameters[ key ] );
+			switch (interpolation) {
+				case InterpolateDiscrete:
+					factoryMethod = this.InterpolantFactoryMethodDiscrete;
+					break;
 
-			 }
+				case InterpolateLinear:
+					factoryMethod = this.InterpolantFactoryMethodLinear;
+					break;
 
-			 var geometry = Object.create( this.constructor.prototype );
-			 this.constructor.apply( geometry, values );
-			 return geometry;
+				case InterpolateSmooth:
+					factoryMethod = this.InterpolantFactoryMethodSmooth;
+					break;
+			}
 
-			 }
+			if (factoryMethod === undefined) {
+				const message = 'unsupported interpolation for ' + this.ValueTypeName + ' keyframe track named ' + this.name;
 
-			 return new this.constructor().copy( this );
-			 */
+				if (this.createInterpolant === undefined) {
+					// fall back to default, unless the default itself is messed up
+					if (interpolation !== this.DefaultInterpolation) {
+						this.setInterpolation(this.DefaultInterpolation);
+					} else {
+						throw new Error(message); // fatal, in this case
+					}
+				}
 
-			return new BufferGeometry().copy( this );
+				console.warn('THREE.KeyframeTrack:', message);
+				return this;
+			}
 
-		},
+			this.createInterpolant = factoryMethod;
+			return this;
+		}
 
-		copy: function ( source ) {
+		getInterpolation() {
+			switch (this.createInterpolant) {
+				case this.InterpolantFactoryMethodDiscrete:
+					return InterpolateDiscrete;
 
-			var name, i, l;
+				case this.InterpolantFactoryMethodLinear:
+					return InterpolateLinear;
 
-			// reset
+				case this.InterpolantFactoryMethodSmooth:
+					return InterpolateSmooth;
+			}
+		}
 
-			this.index = null;
-			this.attributes = {};
-			this.morphAttributes = {};
-			this.groups = [];
-			this.boundingBox = null;
-			this.boundingSphere = null;
+		getValueSize() {
+			return this.values.length / this.times.length;
+		} // move all keyframes either forwards or backwards in time
 
-			// name
 
-			this.name = source.name;
+		shift(timeOffset) {
+			if (timeOffset !== 0.0) {
+				const times = this.times;
 
-			// index
+				for (let i = 0, n = times.length; i !== n; ++i) {
+					times[i] += timeOffset;
+				}
+			}
 
-			var index = source.index;
+			return this;
+		} // scale all keyframe times by a factor (useful for frame <-> seconds conversions)
 
-			if ( index !== null ) {
 
-				this.setIndex( index.clone() );
+		scale(timeScale) {
+			if (timeScale !== 1.0) {
+				const times = this.times;
 
+				for (let i = 0, n = times.length; i !== n; ++i) {
+					times[i] *= timeScale;
+				}
 			}
 
-			// attributes
+			return this;
+		} // removes keyframes before and after animation without changing any values within the range [startTime, endTime].
+		// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values
 
-			var attributes = source.attributes;
 
-			for ( name in attributes ) {
+		trim(startTime, endTime) {
+			const times = this.times,
+						nKeys = times.length;
+			let from = 0,
+					to = nKeys - 1;
 
-				var attribute = attributes[ name ];
-				this.addAttribute( name, attribute.clone() );
+			while (from !== nKeys && times[from] < startTime) {
+				++from;
+			}
 
+			while (to !== -1 && times[to] > endTime) {
+				--to;
 			}
 
-			// morph attributes
+			++to; // inclusive -> exclusive bound
 
-			var morphAttributes = source.morphAttributes;
+			if (from !== 0 || to !== nKeys) {
+				// empty tracks are forbidden, so keep at least one keyframe
+				if (from >= to) {
+					to = Math.max(to, 1);
+					from = to - 1;
+				}
 
-			for ( name in morphAttributes ) {
+				const stride = this.getValueSize();
+				this.times = AnimationUtils.arraySlice(times, from, to);
+				this.values = AnimationUtils.arraySlice(this.values, from * stride, to * stride);
+			}
 
-				var array = [];
-				var morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes
+			return this;
+		} // ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable
 
-				for ( i = 0, l = morphAttribute.length; i < l; i ++ ) {
 
-					array.push( morphAttribute[ i ].clone() );
+		validate() {
+			let valid = true;
+			const valueSize = this.getValueSize();
 
-				}
+			if (valueSize - Math.floor(valueSize) !== 0) {
+				console.error('THREE.KeyframeTrack: Invalid value size in track.', this);
+				valid = false;
+			}
 
-				this.morphAttributes[ name ] = array;
+			const times = this.times,
+						values = this.values,
+						nKeys = times.length;
 
+			if (nKeys === 0) {
+				console.error('THREE.KeyframeTrack: Track is empty.', this);
+				valid = false;
 			}
 
-			// groups
+			let prevTime = null;
 
-			var groups = source.groups;
+			for (let i = 0; i !== nKeys; i++) {
+				const currTime = times[i];
 
-			for ( i = 0, l = groups.length; i < l; i ++ ) {
+				if (typeof currTime === 'number' && isNaN(currTime)) {
+					console.error('THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime);
+					valid = false;
+					break;
+				}
 
-				var group = groups[ i ];
-				this.addGroup( group.start, group.count, group.materialIndex );
+				if (prevTime !== null && prevTime > currTime) {
+					console.error('THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime);
+					valid = false;
+					break;
+				}
 
+				prevTime = currTime;
 			}
 
-			// bounding box
-
-			var boundingBox = source.boundingBox;
-
-			if ( boundingBox !== null ) {
-
-				this.boundingBox = boundingBox.clone();
+			if (values !== undefined) {
+				if (AnimationUtils.isTypedArray(values)) {
+					for (let i = 0, n = values.length; i !== n; ++i) {
+						const value = values[i];
 
+						if (isNaN(value)) {
+							console.error('THREE.KeyframeTrack: Value is not a valid number.', this, i, value);
+							valid = false;
+							break;
+						}
+					}
+				}
 			}
 
-			// bounding sphere
-
-			var boundingSphere = source.boundingSphere;
+			return valid;
+		} // removes equivalent sequential keys as common in morph target sequences
+		// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)
 
-			if ( boundingSphere !== null ) {
 
-				this.boundingSphere = boundingSphere.clone();
+		optimize() {
+			// times or values may be shared with other tracks, so overwriting is unsafe
+			const times = AnimationUtils.arraySlice(this.times),
+						values = AnimationUtils.arraySlice(this.values),
+						stride = this.getValueSize(),
+						smoothInterpolation = this.getInterpolation() === InterpolateSmooth,
+						lastIndex = times.length - 1;
+			let writeIndex = 1;
 
-			}
+			for (let i = 1; i < lastIndex; ++i) {
+				let keep = false;
+				const time = times[i];
+				const timeNext = times[i + 1]; // remove adjacent keyframes scheduled at the same time
 
-			// draw range
+				if (time !== timeNext && (i !== 1 || time !== times[0])) {
+					if (!smoothInterpolation) {
+						// remove unnecessary keyframes same as their neighbors
+						const offset = i * stride,
+									offsetP = offset - stride,
+									offsetN = offset + stride;
 
-			this.drawRange.start = source.drawRange.start;
-			this.drawRange.count = source.drawRange.count;
+						for (let j = 0; j !== stride; ++j) {
+							const value = values[offset + j];
 
-			return this;
+							if (value !== values[offsetP + j] || value !== values[offsetN + j]) {
+								keep = true;
+								break;
+							}
+						}
+					} else {
+						keep = true;
+					}
+				} // in-place compaction
 
-		},
 
-		dispose: function () {
+				if (keep) {
+					if (i !== writeIndex) {
+						times[writeIndex] = times[i];
+						const readOffset = i * stride,
+									writeOffset = writeIndex * stride;
 
-			this.dispatchEvent( { type: 'dispose' } );
+						for (let j = 0; j !== stride; ++j) {
+							values[writeOffset + j] = values[readOffset + j];
+						}
+					}
 
-		}
+					++writeIndex;
+				}
+			} // flush last keyframe (compaction looks ahead)
 
-	} );
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
+			if (lastIndex > 0) {
+				times[writeIndex] = times[lastIndex];
 
-	// BoxGeometry
+				for (let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++j) {
+					values[writeOffset + j] = values[readOffset + j];
+				}
 
-	function BoxGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) {
+				++writeIndex;
+			}
 
-		Geometry.call( this );
+			if (writeIndex !== times.length) {
+				this.times = AnimationUtils.arraySlice(times, 0, writeIndex);
+				this.values = AnimationUtils.arraySlice(values, 0, writeIndex * stride);
+			} else {
+				this.times = times;
+				this.values = values;
+			}
 
-		this.type = 'BoxGeometry';
+			return this;
+		}
 
-		this.parameters = {
-			width: width,
-			height: height,
-			depth: depth,
-			widthSegments: widthSegments,
-			heightSegments: heightSegments,
-			depthSegments: depthSegments
-		};
+		clone() {
+			const times = AnimationUtils.arraySlice(this.times, 0);
+			const values = AnimationUtils.arraySlice(this.values, 0);
+			const TypedKeyframeTrack = this.constructor;
+			const track = new TypedKeyframeTrack(this.name, times, values); // Interpolant argument to constructor is not saved, so copy the factory method directly.
 
-		this.fromBufferGeometry( new BoxBufferGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) );
-		this.mergeVertices();
+			track.createInterpolant = this.createInterpolant;
+			return track;
+		}
 
 	}
 
-	BoxGeometry.prototype = Object.create( Geometry.prototype );
-	BoxGeometry.prototype.constructor = BoxGeometry;
+	KeyframeTrack.prototype.TimeBufferType = Float32Array;
+	KeyframeTrack.prototype.ValueBufferType = Float32Array;
+	KeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
 
-	// BoxBufferGeometry
+	/**
+	 * A Track of Boolean keyframe values.
+	 */
 
-	function BoxBufferGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) {
+	class BooleanKeyframeTrack extends KeyframeTrack {}
 
-		BufferGeometry.call( this );
+	BooleanKeyframeTrack.prototype.ValueTypeName = 'bool';
+	BooleanKeyframeTrack.prototype.ValueBufferType = Array;
+	BooleanKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
+	BooleanKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
+	BooleanKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined; // Note: Actually this track could have a optimized / compressed
 
-		this.type = 'BoxBufferGeometry';
+	/**
+	 * A Track of keyframe values that represent color.
+	 */
 
-		this.parameters = {
-			width: width,
-			height: height,
-			depth: depth,
-			widthSegments: widthSegments,
-			heightSegments: heightSegments,
-			depthSegments: depthSegments
-		};
+	class ColorKeyframeTrack extends KeyframeTrack {}
 
-		var scope = this;
+	ColorKeyframeTrack.prototype.ValueTypeName = 'color'; // ValueBufferType is inherited
 
-		width = width || 1;
-		height = height || 1;
-		depth = depth || 1;
+	/**
+	 * A Track of numeric keyframe values.
+	 */
 
-		// segments
+	class NumberKeyframeTrack extends KeyframeTrack {}
 
-		widthSegments = Math.floor( widthSegments ) || 1;
-		heightSegments = Math.floor( heightSegments ) || 1;
-		depthSegments = Math.floor( depthSegments ) || 1;
+	NumberKeyframeTrack.prototype.ValueTypeName = 'number'; // ValueBufferType is inherited
 
-		// buffers
+	/**
+	 * Spherical linear unit quaternion interpolant.
+	 */
 
-		var indices = [];
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
+	class QuaternionLinearInterpolant extends Interpolant {
+		constructor(parameterPositions, sampleValues, sampleSize, resultBuffer) {
+			super(parameterPositions, sampleValues, sampleSize, resultBuffer);
+		}
 
-		// helper variables
+		interpolate_(i1, t0, t, t1) {
+			const result = this.resultBuffer,
+						values = this.sampleValues,
+						stride = this.valueSize,
+						alpha = (t - t0) / (t1 - t0);
+			let offset = i1 * stride;
 
-		var numberOfVertices = 0;
-		var groupStart = 0;
+			for (let end = offset + stride; offset !== end; offset += 4) {
+				Quaternion.slerpFlat(result, 0, values, offset - stride, values, offset, alpha);
+			}
 
-		// build each side of the box geometry
+			return result;
+		}
 
-		buildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 ); // px
-		buildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 ); // nx
-		buildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 ); // py
-		buildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 ); // ny
-		buildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 ); // pz
-		buildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 ); // nz
+	}
 
-		// build geometry
+	/**
+	 * A Track of quaternion keyframe values.
+	 */
 
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+	class QuaternionKeyframeTrack extends KeyframeTrack {
+		InterpolantFactoryMethodLinear(result) {
+			return new QuaternionLinearInterpolant(this.times, this.values, this.getValueSize(), result);
+		}
 
-		function buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {
+	}
 
-			var segmentWidth = width / gridX;
-			var segmentHeight = height / gridY;
+	QuaternionKeyframeTrack.prototype.ValueTypeName = 'quaternion'; // ValueBufferType is inherited
 
-			var widthHalf = width / 2;
-			var heightHalf = height / 2;
-			var depthHalf = depth / 2;
+	QuaternionKeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
+	QuaternionKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;
 
-			var gridX1 = gridX + 1;
-			var gridY1 = gridY + 1;
+	/**
+	 * A Track that interpolates Strings
+	 */
 
-			var vertexCounter = 0;
-			var groupCount = 0;
+	class StringKeyframeTrack extends KeyframeTrack {}
 
-			var ix, iy;
+	StringKeyframeTrack.prototype.ValueTypeName = 'string';
+	StringKeyframeTrack.prototype.ValueBufferType = Array;
+	StringKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
+	StringKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
+	StringKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;
 
-			var vector = new Vector3();
+	/**
+	 * A Track of vectored keyframe values.
+	 */
 
-			// generate vertices, normals and uvs
+	class VectorKeyframeTrack extends KeyframeTrack {}
 
-			for ( iy = 0; iy < gridY1; iy ++ ) {
+	VectorKeyframeTrack.prototype.ValueTypeName = 'vector'; // ValueBufferType is inherited
 
-				var y = iy * segmentHeight - heightHalf;
+	class AnimationClip {
+		constructor(name, duration = -1, tracks, blendMode = NormalAnimationBlendMode) {
+			this.name = name;
+			this.tracks = tracks;
+			this.duration = duration;
+			this.blendMode = blendMode;
+			this.uuid = generateUUID(); // this means it should figure out its duration by scanning the tracks
 
-				for ( ix = 0; ix < gridX1; ix ++ ) {
+			if (this.duration < 0) {
+				this.resetDuration();
+			}
+		}
 
-					var x = ix * segmentWidth - widthHalf;
+		static parse(json) {
+			const tracks = [],
+						jsonTracks = json.tracks,
+						frameTime = 1.0 / (json.fps || 1.0);
 
-					// set values to correct vector component
+			for (let i = 0, n = jsonTracks.length; i !== n; ++i) {
+				tracks.push(parseKeyframeTrack(jsonTracks[i]).scale(frameTime));
+			}
 
-					vector[ u ] = x * udir;
-					vector[ v ] = y * vdir;
-					vector[ w ] = depthHalf;
+			const clip = new this(json.name, json.duration, tracks, json.blendMode);
+			clip.uuid = json.uuid;
+			return clip;
+		}
 
-					// now apply vector to vertex buffer
+		static toJSON(clip) {
+			const tracks = [],
+						clipTracks = clip.tracks;
+			const json = {
+				'name': clip.name,
+				'duration': clip.duration,
+				'tracks': tracks,
+				'uuid': clip.uuid,
+				'blendMode': clip.blendMode
+			};
 
-					vertices.push( vector.x, vector.y, vector.z );
+			for (let i = 0, n = clipTracks.length; i !== n; ++i) {
+				tracks.push(KeyframeTrack.toJSON(clipTracks[i]));
+			}
 
-					// set values to correct vector component
+			return json;
+		}
 
-					vector[ u ] = 0;
-					vector[ v ] = 0;
-					vector[ w ] = depth > 0 ? 1 : - 1;
+		static CreateFromMorphTargetSequence(name, morphTargetSequence, fps, noLoop) {
+			const numMorphTargets = morphTargetSequence.length;
+			const tracks = [];
 
-					// now apply vector to normal buffer
+			for (let i = 0; i < numMorphTargets; i++) {
+				let times = [];
+				let values = [];
+				times.push((i + numMorphTargets - 1) % numMorphTargets, i, (i + 1) % numMorphTargets);
+				values.push(0, 1, 0);
+				const order = AnimationUtils.getKeyframeOrder(times);
+				times = AnimationUtils.sortedArray(times, 1, order);
+				values = AnimationUtils.sortedArray(values, 1, order); // if there is a key at the first frame, duplicate it as the
+				// last frame as well for perfect loop.
 
-					normals.push( vector.x, vector.y, vector.z );
+				if (!noLoop && times[0] === 0) {
+					times.push(numMorphTargets);
+					values.push(values[0]);
+				}
 
-					// uvs
+				tracks.push(new NumberKeyframeTrack('.morphTargetInfluences[' + morphTargetSequence[i].name + ']', times, values).scale(1.0 / fps));
+			}
 
-					uvs.push( ix / gridX );
-					uvs.push( 1 - ( iy / gridY ) );
+			return new this(name, -1, tracks);
+		}
 
-					// counters
+		static findByName(objectOrClipArray, name) {
+			let clipArray = objectOrClipArray;
 
-					vertexCounter += 1;
+			if (!Array.isArray(objectOrClipArray)) {
+				const o = objectOrClipArray;
+				clipArray = o.geometry && o.geometry.animations || o.animations;
+			}
 
+			for (let i = 0; i < clipArray.length; i++) {
+				if (clipArray[i].name === name) {
+					return clipArray[i];
 				}
-
 			}
 
-			// indices
-
-			// 1. you need three indices to draw a single face
-			// 2. a single segment consists of two faces
-			// 3. so we need to generate six (2*3) indices per segment
-
-			for ( iy = 0; iy < gridY; iy ++ ) {
-
-				for ( ix = 0; ix < gridX; ix ++ ) {
+			return null;
+		}
 
-					var a = numberOfVertices + ix + gridX1 * iy;
-					var b = numberOfVertices + ix + gridX1 * ( iy + 1 );
-					var c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );
-					var d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;
+		static CreateClipsFromMorphTargetSequences(morphTargets, fps, noLoop) {
+			const animationToMorphTargets = {}; // tested with https://regex101.com/ on trick sequences
+			// such flamingo_flyA_003, flamingo_run1_003, crdeath0059
 
-					// faces
+			const pattern = /^([\w-]*?)([\d]+)$/; // sort morph target names into animation groups based
+			// patterns like Walk_001, Walk_002, Run_001, Run_002
 
-					indices.push( a, b, d );
-					indices.push( b, c, d );
+			for (let i = 0, il = morphTargets.length; i < il; i++) {
+				const morphTarget = morphTargets[i];
+				const parts = morphTarget.name.match(pattern);
 
-					// increase counter
+				if (parts && parts.length > 1) {
+					const name = parts[1];
+					let animationMorphTargets = animationToMorphTargets[name];
 
-					groupCount += 6;
+					if (!animationMorphTargets) {
+						animationToMorphTargets[name] = animationMorphTargets = [];
+					}
 
+					animationMorphTargets.push(morphTarget);
 				}
-
 			}
 
-			// add a group to the geometry. this will ensure multi material support
+			const clips = [];
 
-			scope.addGroup( groupStart, groupCount, materialIndex );
+			for (const name in animationToMorphTargets) {
+				clips.push(this.CreateFromMorphTargetSequence(name, animationToMorphTargets[name], fps, noLoop));
+			}
 
-			// calculate new start value for groups
+			return clips;
+		} // parse the animation.hierarchy format
 
-			groupStart += groupCount;
 
-			// update total number of vertices
+		static parseAnimation(animation, bones) {
+			if (!animation) {
+				console.error('THREE.AnimationClip: No animation in JSONLoader data.');
+				return null;
+			}
 
-			numberOfVertices += vertexCounter;
+			const addNonemptyTrack = function (trackType, trackName, animationKeys, propertyName, destTracks) {
+				// only return track if there are actually keys.
+				if (animationKeys.length !== 0) {
+					const times = [];
+					const values = [];
+					AnimationUtils.flattenJSON(animationKeys, times, values, propertyName); // empty keys are filtered out, so check again
 
-		}
+					if (times.length !== 0) {
+						destTracks.push(new trackType(trackName, times, values));
+					}
+				}
+			};
 
-	}
+			const tracks = [];
+			const clipName = animation.name || 'default';
+			const fps = animation.fps || 30;
+			const blendMode = animation.blendMode; // automatic length determination in AnimationClip.
 
-	BoxBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	BoxBufferGeometry.prototype.constructor = BoxBufferGeometry;
+			let duration = animation.length || -1;
+			const hierarchyTracks = animation.hierarchy || [];
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
+			for (let h = 0; h < hierarchyTracks.length; h++) {
+				const animationKeys = hierarchyTracks[h].keys; // skip empty tracks
 
-	// PlaneGeometry
+				if (!animationKeys || animationKeys.length === 0) continue; // process morph targets
 
-	function PlaneGeometry( width, height, widthSegments, heightSegments ) {
+				if (animationKeys[0].morphTargets) {
+					// figure out all morph targets used in this track
+					const morphTargetNames = {};
+					let k;
 
-		Geometry.call( this );
+					for (k = 0; k < animationKeys.length; k++) {
+						if (animationKeys[k].morphTargets) {
+							for (let m = 0; m < animationKeys[k].morphTargets.length; m++) {
+								morphTargetNames[animationKeys[k].morphTargets[m]] = -1;
+							}
+						}
+					} // create a track for each morph target with all zero
+					// morphTargetInfluences except for the keys in which
+					// the morphTarget is named.
 
-		this.type = 'PlaneGeometry';
 
-		this.parameters = {
-			width: width,
-			height: height,
-			widthSegments: widthSegments,
-			heightSegments: heightSegments
-		};
+					for (const morphTargetName in morphTargetNames) {
+						const times = [];
+						const values = [];
 
-		this.fromBufferGeometry( new PlaneBufferGeometry( width, height, widthSegments, heightSegments ) );
-		this.mergeVertices();
+						for (let m = 0; m !== animationKeys[k].morphTargets.length; ++m) {
+							const animationKey = animationKeys[k];
+							times.push(animationKey.time);
+							values.push(animationKey.morphTarget === morphTargetName ? 1 : 0);
+						}
 
-	}
+						tracks.push(new NumberKeyframeTrack('.morphTargetInfluence[' + morphTargetName + ']', times, values));
+					}
 
-	PlaneGeometry.prototype = Object.create( Geometry.prototype );
-	PlaneGeometry.prototype.constructor = PlaneGeometry;
+					duration = morphTargetNames.length * (fps || 1.0);
+				} else {
+					// ...assume skeletal animation
+					const boneName = '.bones[' + bones[h].name + ']';
+					addNonemptyTrack(VectorKeyframeTrack, boneName + '.position', animationKeys, 'pos', tracks);
+					addNonemptyTrack(QuaternionKeyframeTrack, boneName + '.quaternion', animationKeys, 'rot', tracks);
+					addNonemptyTrack(VectorKeyframeTrack, boneName + '.scale', animationKeys, 'scl', tracks);
+				}
+			}
 
-	// PlaneBufferGeometry
+			if (tracks.length === 0) {
+				return null;
+			}
 
-	function PlaneBufferGeometry( width, height, widthSegments, heightSegments ) {
+			const clip = new this(clipName, duration, tracks, blendMode);
+			return clip;
+		}
 
-		BufferGeometry.call( this );
+		resetDuration() {
+			const tracks = this.tracks;
+			let duration = 0;
 
-		this.type = 'PlaneBufferGeometry';
+			for (let i = 0, n = tracks.length; i !== n; ++i) {
+				const track = this.tracks[i];
+				duration = Math.max(duration, track.times[track.times.length - 1]);
+			}
 
-		this.parameters = {
-			width: width,
-			height: height,
-			widthSegments: widthSegments,
-			heightSegments: heightSegments
-		};
+			this.duration = duration;
+			return this;
+		}
 
-		width = width || 1;
-		height = height || 1;
+		trim() {
+			for (let i = 0; i < this.tracks.length; i++) {
+				this.tracks[i].trim(0, this.duration);
+			}
 
-		var width_half = width / 2;
-		var height_half = height / 2;
+			return this;
+		}
 
-		var gridX = Math.floor( widthSegments ) || 1;
-		var gridY = Math.floor( heightSegments ) || 1;
+		validate() {
+			let valid = true;
 
-		var gridX1 = gridX + 1;
-		var gridY1 = gridY + 1;
+			for (let i = 0; i < this.tracks.length; i++) {
+				valid = valid && this.tracks[i].validate();
+			}
 
-		var segment_width = width / gridX;
-		var segment_height = height / gridY;
+			return valid;
+		}
 
-		var ix, iy;
+		optimize() {
+			for (let i = 0; i < this.tracks.length; i++) {
+				this.tracks[i].optimize();
+			}
 
-		// buffers
+			return this;
+		}
 
-		var indices = [];
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
+		clone() {
+			const tracks = [];
 
-		// generate vertices, normals and uvs
+			for (let i = 0; i < this.tracks.length; i++) {
+				tracks.push(this.tracks[i].clone());
+			}
 
-		for ( iy = 0; iy < gridY1; iy ++ ) {
+			return new this.constructor(this.name, this.duration, tracks, this.blendMode);
+		}
 
-			var y = iy * segment_height - height_half;
+		toJSON() {
+			return this.constructor.toJSON(this);
+		}
 
-			for ( ix = 0; ix < gridX1; ix ++ ) {
+	}
 
-				var x = ix * segment_width - width_half;
+	function getTrackTypeForValueTypeName(typeName) {
+		switch (typeName.toLowerCase()) {
+			case 'scalar':
+			case 'double':
+			case 'float':
+			case 'number':
+			case 'integer':
+				return NumberKeyframeTrack;
 
-				vertices.push( x, - y, 0 );
+			case 'vector':
+			case 'vector2':
+			case 'vector3':
+			case 'vector4':
+				return VectorKeyframeTrack;
 
-				normals.push( 0, 0, 1 );
+			case 'color':
+				return ColorKeyframeTrack;
 
-				uvs.push( ix / gridX );
-				uvs.push( 1 - ( iy / gridY ) );
+			case 'quaternion':
+				return QuaternionKeyframeTrack;
 
-			}
+			case 'bool':
+			case 'boolean':
+				return BooleanKeyframeTrack;
 
+			case 'string':
+				return StringKeyframeTrack;
 		}
 
-		// indices
-
-		for ( iy = 0; iy < gridY; iy ++ ) {
-
-			for ( ix = 0; ix < gridX; ix ++ ) {
+		throw new Error('THREE.KeyframeTrack: Unsupported typeName: ' + typeName);
+	}
 
-				var a = ix + gridX1 * iy;
-				var b = ix + gridX1 * ( iy + 1 );
-				var c = ( ix + 1 ) + gridX1 * ( iy + 1 );
-				var d = ( ix + 1 ) + gridX1 * iy;
+	function parseKeyframeTrack(json) {
+		if (json.type === undefined) {
+			throw new Error('THREE.KeyframeTrack: track type undefined, can not parse');
+		}
 
-				// faces
+		const trackType = getTrackTypeForValueTypeName(json.type);
 
-				indices.push( a, b, d );
-				indices.push( b, c, d );
+		if (json.times === undefined) {
+			const times = [],
+						values = [];
+			AnimationUtils.flattenJSON(json.keys, times, values, 'value');
+			json.times = times;
+			json.values = values;
+		} // derived classes can define a static parse method
 
-			}
 
+		if (trackType.parse !== undefined) {
+			return trackType.parse(json);
+		} else {
+			// by default, we assume a constructor compatible with the base
+			return new trackType(json.name, json.times, json.values, json.interpolation);
 		}
+	}
 
-		// build geometry
+	const Cache = {
+		enabled: false,
+		files: {},
+		add: function (key, file) {
+			if (this.enabled === false) return; // console.log( 'THREE.Cache', 'Adding key:', key );
 
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+			this.files[key] = file;
+		},
+		get: function (key) {
+			if (this.enabled === false) return; // console.log( 'THREE.Cache', 'Checking key:', key );
 
-	}
+			return this.files[key];
+		},
+		remove: function (key) {
+			delete this.files[key];
+		},
+		clear: function () {
+			this.files = {};
+		}
+	};
 
-	PlaneBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	PlaneBufferGeometry.prototype.constructor = PlaneBufferGeometry;
+	class LoadingManager {
+		constructor(onLoad, onProgress, onError) {
+			const scope = this;
+			let isLoading = false;
+			let itemsLoaded = 0;
+			let itemsTotal = 0;
+			let urlModifier = undefined;
+			const handlers = []; // Refer to #5689 for the reason why we don't set .onStart
+			// in the constructor
+
+			this.onStart = undefined;
+			this.onLoad = onLoad;
+			this.onProgress = onProgress;
+			this.onError = onError;
+
+			this.itemStart = function (url) {
+				itemsTotal++;
+
+				if (isLoading === false) {
+					if (scope.onStart !== undefined) {
+						scope.onStart(url, itemsLoaded, itemsTotal);
+					}
+				}
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 */
+				isLoading = true;
+			};
 
-	var materialId = 0;
+			this.itemEnd = function (url) {
+				itemsLoaded++;
 
-	function Material() {
+				if (scope.onProgress !== undefined) {
+					scope.onProgress(url, itemsLoaded, itemsTotal);
+				}
 
-		Object.defineProperty( this, 'id', { value: materialId ++ } );
+				if (itemsLoaded === itemsTotal) {
+					isLoading = false;
 
-		this.uuid = _Math.generateUUID();
+					if (scope.onLoad !== undefined) {
+						scope.onLoad();
+					}
+				}
+			};
 
-		this.name = '';
-		this.type = 'Material';
+			this.itemError = function (url) {
+				if (scope.onError !== undefined) {
+					scope.onError(url);
+				}
+			};
 
-		this.fog = true;
-		this.lights = true;
+			this.resolveURL = function (url) {
+				if (urlModifier) {
+					return urlModifier(url);
+				}
 
-		this.blending = NormalBlending;
-		this.side = FrontSide;
-		this.flatShading = false;
-		this.vertexColors = NoColors; // THREE.NoColors, THREE.VertexColors, THREE.FaceColors
+				return url;
+			};
 
-		this.opacity = 1;
-		this.transparent = false;
+			this.setURLModifier = function (transform) {
+				urlModifier = transform;
+				return this;
+			};
 
-		this.blendSrc = SrcAlphaFactor;
-		this.blendDst = OneMinusSrcAlphaFactor;
-		this.blendEquation = AddEquation;
-		this.blendSrcAlpha = null;
-		this.blendDstAlpha = null;
-		this.blendEquationAlpha = null;
+			this.addHandler = function (regex, loader) {
+				handlers.push(regex, loader);
+				return this;
+			};
 
-		this.depthFunc = LessEqualDepth;
-		this.depthTest = true;
-		this.depthWrite = true;
+			this.removeHandler = function (regex) {
+				const index = handlers.indexOf(regex);
 
-		this.clippingPlanes = null;
-		this.clipIntersection = false;
-		this.clipShadows = false;
+				if (index !== -1) {
+					handlers.splice(index, 2);
+				}
 
-		this.shadowSide = null;
+				return this;
+			};
 
-		this.colorWrite = true;
+			this.getHandler = function (file) {
+				for (let i = 0, l = handlers.length; i < l; i += 2) {
+					const regex = handlers[i];
+					const loader = handlers[i + 1];
+					if (regex.global) regex.lastIndex = 0; // see #17920
 
-		this.precision = null; // override the renderer's default precision for this material
+					if (regex.test(file)) {
+						return loader;
+					}
+				}
 
-		this.polygonOffset = false;
-		this.polygonOffsetFactor = 0;
-		this.polygonOffsetUnits = 0;
+				return null;
+			};
+		}
 
-		this.dithering = false;
+	}
 
-		this.alphaTest = 0;
-		this.premultipliedAlpha = false;
+	const DefaultLoadingManager = new LoadingManager();
 
-		this.overdraw = 0; // Overdrawn pixels (typically between 0 and 1) for fixing antialiasing gaps in CanvasRenderer
+	class Loader {
+		constructor(manager) {
+			this.manager = manager !== undefined ? manager : DefaultLoadingManager;
+			this.crossOrigin = 'anonymous';
+			this.withCredentials = false;
+			this.path = '';
+			this.resourcePath = '';
+			this.requestHeader = {};
+		}
 
-		this.visible = true;
+		load()
+		/* url, onLoad, onProgress, onError */
+		{}
 
-		this.userData = {};
+		loadAsync(url, onProgress) {
+			const scope = this;
+			return new Promise(function (resolve, reject) {
+				scope.load(url, resolve, onProgress, reject);
+			});
+		}
 
-		this.needsUpdate = true;
+		parse()
+		/* data */
+		{}
+
+		setCrossOrigin(crossOrigin) {
+			this.crossOrigin = crossOrigin;
+			return this;
+		}
+
+		setWithCredentials(value) {
+			this.withCredentials = value;
+			return this;
+		}
+
+		setPath(path) {
+			this.path = path;
+			return this;
+		}
+
+		setResourcePath(resourcePath) {
+			this.resourcePath = resourcePath;
+			return this;
+		}
+
+		setRequestHeader(requestHeader) {
+			this.requestHeader = requestHeader;
+			return this;
+		}
 
 	}
 
-	Material.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
+	const loading = {};
 
-		constructor: Material,
+	class FileLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
 
-		isMaterial: true,
+		load(url, onLoad, onProgress, onError) {
+			if (url === undefined) url = '';
+			if (this.path !== undefined) url = this.path + url;
+			url = this.manager.resolveURL(url);
+			const scope = this;
+			const cached = Cache.get(url);
 
-		onBeforeCompile: function () {},
+			if (cached !== undefined) {
+				scope.manager.itemStart(url);
+				setTimeout(function () {
+					if (onLoad) onLoad(cached);
+					scope.manager.itemEnd(url);
+				}, 0);
+				return cached;
+			} // Check if request is duplicate
 
-		setValues: function ( values ) {
 
-			if ( values === undefined ) return;
+			if (loading[url] !== undefined) {
+				loading[url].push({
+					onLoad: onLoad,
+					onProgress: onProgress,
+					onError: onError
+				});
+				return;
+			} // Check for data: URI
 
-			for ( var key in values ) {
 
-				var newValue = values[ key ];
+			const dataUriRegex = /^data:(.*?)(;base64)?,(.*)$/;
+			const dataUriRegexResult = url.match(dataUriRegex);
+			let request; // Safari can not handle Data URIs through XMLHttpRequest so process manually
 
-				if ( newValue === undefined ) {
+			if (dataUriRegexResult) {
+				const mimeType = dataUriRegexResult[1];
+				const isBase64 = !!dataUriRegexResult[2];
+				let data = dataUriRegexResult[3];
+				data = decodeURIComponent(data);
+				if (isBase64) data = atob(data);
 
-					console.warn( "THREE.Material: '" + key + "' parameter is undefined." );
-					continue;
+				try {
+					let response;
+					const responseType = (this.responseType || '').toLowerCase();
 
-				}
+					switch (responseType) {
+						case 'arraybuffer':
+						case 'blob':
+							const view = new Uint8Array(data.length);
 
-				// for backward compatability if shading is set in the constructor
-				if ( key === 'shading' ) {
+							for (let i = 0; i < data.length; i++) {
+								view[i] = data.charCodeAt(i);
+							}
 
-					console.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
-					this.flatShading = ( newValue === FlatShading ) ? true : false;
-					continue;
+							if (responseType === 'blob') {
+								response = new Blob([view.buffer], {
+									type: mimeType
+								});
+							} else {
+								response = view.buffer;
+							}
 
-				}
+							break;
 
-				var currentValue = this[ key ];
+						case 'document':
+							const parser = new DOMParser();
+							response = parser.parseFromString(data, mimeType);
+							break;
 
-				if ( currentValue === undefined ) {
+						case 'json':
+							response = JSON.parse(data);
+							break;
 
-					console.warn( "THREE." + this.type + ": '" + key + "' is not a property of this material." );
-					continue;
+						default:
+							// 'text' or other
+							response = data;
+							break;
+					} // Wait for next browser tick like standard XMLHttpRequest event dispatching does
 
+
+					setTimeout(function () {
+						if (onLoad) onLoad(response);
+						scope.manager.itemEnd(url);
+					}, 0);
+				} catch (error) {
+					// Wait for next browser tick like standard XMLHttpRequest event dispatching does
+					setTimeout(function () {
+						if (onError) onError(error);
+						scope.manager.itemError(url);
+						scope.manager.itemEnd(url);
+					}, 0);
 				}
+			} else {
+				// Initialise array for duplicate requests
+				loading[url] = [];
+				loading[url].push({
+					onLoad: onLoad,
+					onProgress: onProgress,
+					onError: onError
+				});
+				request = new XMLHttpRequest();
+				request.open('GET', url, true);
+				request.addEventListener('load', function (event) {
+					const response = this.response;
+					const callbacks = loading[url];
+					delete loading[url];
+
+					if (this.status === 200 || this.status === 0) {
+						// Some browsers return HTTP Status 0 when using non-http protocol
+						// e.g. 'file://' or 'data://'. Handle as success.
+						if (this.status === 0) console.warn('THREE.FileLoader: HTTP Status 0 received.'); // Add to cache only on HTTP success, so that we do not cache
+						// error response bodies as proper responses to requests.
 
-				if ( currentValue && currentValue.isColor ) {
+						Cache.add(url, response);
 
-					currentValue.set( newValue );
+						for (let i = 0, il = callbacks.length; i < il; i++) {
+							const callback = callbacks[i];
+							if (callback.onLoad) callback.onLoad(response);
+						}
 
-				} else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {
+						scope.manager.itemEnd(url);
+					} else {
+						for (let i = 0, il = callbacks.length; i < il; i++) {
+							const callback = callbacks[i];
+							if (callback.onError) callback.onError(event);
+						}
 
-					currentValue.copy( newValue );
+						scope.manager.itemError(url);
+						scope.manager.itemEnd(url);
+					}
+				}, false);
+				request.addEventListener('progress', function (event) {
+					const callbacks = loading[url];
 
-				} else if ( key === 'overdraw' ) {
+					for (let i = 0, il = callbacks.length; i < il; i++) {
+						const callback = callbacks[i];
+						if (callback.onProgress) callback.onProgress(event);
+					}
+				}, false);
+				request.addEventListener('error', function (event) {
+					const callbacks = loading[url];
+					delete loading[url];
+
+					for (let i = 0, il = callbacks.length; i < il; i++) {
+						const callback = callbacks[i];
+						if (callback.onError) callback.onError(event);
+					}
 
-					// ensure overdraw is backwards-compatible with legacy boolean type
-					this[ key ] = Number( newValue );
+					scope.manager.itemError(url);
+					scope.manager.itemEnd(url);
+				}, false);
+				request.addEventListener('abort', function (event) {
+					const callbacks = loading[url];
+					delete loading[url];
 
-				} else {
+					for (let i = 0, il = callbacks.length; i < il; i++) {
+						const callback = callbacks[i];
+						if (callback.onError) callback.onError(event);
+					}
 
-					this[ key ] = newValue;
+					scope.manager.itemError(url);
+					scope.manager.itemEnd(url);
+				}, false);
+				if (this.responseType !== undefined) request.responseType = this.responseType;
+				if (this.withCredentials !== undefined) request.withCredentials = this.withCredentials;
+				if (request.overrideMimeType) request.overrideMimeType(this.mimeType !== undefined ? this.mimeType : 'text/plain');
 
+				for (const header in this.requestHeader) {
+					request.setRequestHeader(header, this.requestHeader[header]);
 				}
 
+				request.send(null);
 			}
 
-		},
+			scope.manager.itemStart(url);
+			return request;
+		}
 
-		toJSON: function ( meta ) {
+		setResponseType(value) {
+			this.responseType = value;
+			return this;
+		}
 
-			var isRoot = ( meta === undefined || typeof meta === 'string' );
+		setMimeType(value) {
+			this.mimeType = value;
+			return this;
+		}
 
-			if ( isRoot ) {
+	}
 
-				meta = {
-					textures: {},
-					images: {}
-				};
+	class AnimationLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
 
-			}
+		load(url, onLoad, onProgress, onError) {
+			const scope = this;
+			const loader = new FileLoader(this.manager);
+			loader.setPath(this.path);
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(this.withCredentials);
+			loader.load(url, function (text) {
+				try {
+					onLoad(scope.parse(JSON.parse(text)));
+				} catch (e) {
+					if (onError) {
+						onError(e);
+					} else {
+						console.error(e);
+					}
 
-			var data = {
-				metadata: {
-					version: 4.5,
-					type: 'Material',
-					generator: 'Material.toJSON'
+					scope.manager.itemError(url);
 				}
-			};
-
-			// standard Material serialization
-			data.uuid = this.uuid;
-			data.type = this.type;
-
-			if ( this.name !== '' ) data.name = this.name;
+			}, onProgress, onError);
+		}
 
-			if ( this.color && this.color.isColor ) data.color = this.color.getHex();
+		parse(json) {
+			const animations = [];
 
-			if ( this.roughness !== undefined ) data.roughness = this.roughness;
-			if ( this.metalness !== undefined ) data.metalness = this.metalness;
+			for (let i = 0; i < json.length; i++) {
+				const clip = AnimationClip.parse(json[i]);
+				animations.push(clip);
+			}
 
-			if ( this.emissive && this.emissive.isColor ) data.emissive = this.emissive.getHex();
-			if ( this.emissiveIntensity !== 1 ) data.emissiveIntensity = this.emissiveIntensity;
+			return animations;
+		}
 
-			if ( this.specular && this.specular.isColor ) data.specular = this.specular.getHex();
-			if ( this.shininess !== undefined ) data.shininess = this.shininess;
-			if ( this.clearCoat !== undefined ) data.clearCoat = this.clearCoat;
-			if ( this.clearCoatRoughness !== undefined ) data.clearCoatRoughness = this.clearCoatRoughness;
+	}
 
-			if ( this.map && this.map.isTexture ) data.map = this.map.toJSON( meta ).uuid;
-			if ( this.alphaMap && this.alphaMap.isTexture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;
-			if ( this.lightMap && this.lightMap.isTexture ) data.lightMap = this.lightMap.toJSON( meta ).uuid;
-			if ( this.bumpMap && this.bumpMap.isTexture ) {
+	/**
+	 * Abstract Base class to block based textures loader (dds, pvr, ...)
+	 *
+	 * Sub classes have to implement the parse() method which will be used in load().
+	 */
 
-				data.bumpMap = this.bumpMap.toJSON( meta ).uuid;
-				data.bumpScale = this.bumpScale;
+	class CompressedTextureLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
+
+		load(url, onLoad, onProgress, onError) {
+			const scope = this;
+			const images = [];
+			const texture = new CompressedTexture();
+			const loader = new FileLoader(this.manager);
+			loader.setPath(this.path);
+			loader.setResponseType('arraybuffer');
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(scope.withCredentials);
+			let loaded = 0;
+
+			function loadTexture(i) {
+				loader.load(url[i], function (buffer) {
+					const texDatas = scope.parse(buffer, true);
+					images[i] = {
+						width: texDatas.width,
+						height: texDatas.height,
+						format: texDatas.format,
+						mipmaps: texDatas.mipmaps
+					};
+					loaded += 1;
 
+					if (loaded === 6) {
+						if (texDatas.mipmapCount === 1) texture.minFilter = LinearFilter;
+						texture.image = images;
+						texture.format = texDatas.format;
+						texture.needsUpdate = true;
+						if (onLoad) onLoad(texture);
+					}
+				}, onProgress, onError);
 			}
-			if ( this.normalMap && this.normalMap.isTexture ) {
 
-				data.normalMap = this.normalMap.toJSON( meta ).uuid;
-				data.normalScale = this.normalScale.toArray();
+			if (Array.isArray(url)) {
+				for (let i = 0, il = url.length; i < il; ++i) {
+					loadTexture(i);
+				}
+			} else {
+				// compressed cubemap texture stored in a single DDS file
+				loader.load(url, function (buffer) {
+					const texDatas = scope.parse(buffer, true);
+
+					if (texDatas.isCubemap) {
+						const faces = texDatas.mipmaps.length / texDatas.mipmapCount;
+
+						for (let f = 0; f < faces; f++) {
+							images[f] = {
+								mipmaps: []
+							};
+
+							for (let i = 0; i < texDatas.mipmapCount; i++) {
+								images[f].mipmaps.push(texDatas.mipmaps[f * texDatas.mipmapCount + i]);
+								images[f].format = texDatas.format;
+								images[f].width = texDatas.width;
+								images[f].height = texDatas.height;
+							}
+						}
 
-			}
-			if ( this.displacementMap && this.displacementMap.isTexture ) {
+						texture.image = images;
+					} else {
+						texture.image.width = texDatas.width;
+						texture.image.height = texDatas.height;
+						texture.mipmaps = texDatas.mipmaps;
+					}
 
-				data.displacementMap = this.displacementMap.toJSON( meta ).uuid;
-				data.displacementScale = this.displacementScale;
-				data.displacementBias = this.displacementBias;
+					if (texDatas.mipmapCount === 1) {
+						texture.minFilter = LinearFilter;
+					}
 
+					texture.format = texDatas.format;
+					texture.needsUpdate = true;
+					if (onLoad) onLoad(texture);
+				}, onProgress, onError);
 			}
-			if ( this.roughnessMap && this.roughnessMap.isTexture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;
-			if ( this.metalnessMap && this.metalnessMap.isTexture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;
 
-			if ( this.emissiveMap && this.emissiveMap.isTexture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;
-			if ( this.specularMap && this.specularMap.isTexture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;
+			return texture;
+		}
+
+	}
 
-			if ( this.envMap && this.envMap.isTexture ) {
+	class ImageLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
 
-				data.envMap = this.envMap.toJSON( meta ).uuid;
-				data.reflectivity = this.reflectivity; // Scale behind envMap
+		load(url, onLoad, onProgress, onError) {
+			if (this.path !== undefined) url = this.path + url;
+			url = this.manager.resolveURL(url);
+			const scope = this;
+			const cached = Cache.get(url);
 
+			if (cached !== undefined) {
+				scope.manager.itemStart(url);
+				setTimeout(function () {
+					if (onLoad) onLoad(cached);
+					scope.manager.itemEnd(url);
+				}, 0);
+				return cached;
 			}
 
-			if ( this.gradientMap && this.gradientMap.isTexture ) {
+			const image = document.createElementNS('http://www.w3.org/1999/xhtml', 'img');
 
-				data.gradientMap = this.gradientMap.toJSON( meta ).uuid;
+			function onImageLoad() {
+				image.removeEventListener('load', onImageLoad, false);
+				image.removeEventListener('error', onImageError, false);
+				Cache.add(url, this);
+				if (onLoad) onLoad(this);
+				scope.manager.itemEnd(url);
+			}
 
+			function onImageError(event) {
+				image.removeEventListener('load', onImageLoad, false);
+				image.removeEventListener('error', onImageError, false);
+				if (onError) onError(event);
+				scope.manager.itemError(url);
+				scope.manager.itemEnd(url);
 			}
 
-			if ( this.size !== undefined ) data.size = this.size;
-			if ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;
+			image.addEventListener('load', onImageLoad, false);
+			image.addEventListener('error', onImageError, false);
 
-			if ( this.blending !== NormalBlending ) data.blending = this.blending;
-			if ( this.flatShading === true ) data.flatShading = this.flatShading;
-			if ( this.side !== FrontSide ) data.side = this.side;
-			if ( this.vertexColors !== NoColors ) data.vertexColors = this.vertexColors;
+			if (url.substr(0, 5) !== 'data:') {
+				if (this.crossOrigin !== undefined) image.crossOrigin = this.crossOrigin;
+			}
 
-			if ( this.opacity < 1 ) data.opacity = this.opacity;
-			if ( this.transparent === true ) data.transparent = this.transparent;
+			scope.manager.itemStart(url);
+			image.src = url;
+			return image;
+		}
 
-			data.depthFunc = this.depthFunc;
-			data.depthTest = this.depthTest;
-			data.depthWrite = this.depthWrite;
+	}
 
-			// rotation (SpriteMaterial)
-			if ( this.rotation !== 0 ) data.rotation = this.rotation;
+	class CubeTextureLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
 
-			if ( this.linewidth !== 1 ) data.linewidth = this.linewidth;
-			if ( this.dashSize !== undefined ) data.dashSize = this.dashSize;
-			if ( this.gapSize !== undefined ) data.gapSize = this.gapSize;
-			if ( this.scale !== undefined ) data.scale = this.scale;
+		load(urls, onLoad, onProgress, onError) {
+			const texture = new CubeTexture();
+			const loader = new ImageLoader(this.manager);
+			loader.setCrossOrigin(this.crossOrigin);
+			loader.setPath(this.path);
+			let loaded = 0;
 
-			if ( this.dithering === true ) data.dithering = true;
+			function loadTexture(i) {
+				loader.load(urls[i], function (image) {
+					texture.images[i] = image;
+					loaded++;
 
-			if ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;
-			if ( this.premultipliedAlpha === true ) data.premultipliedAlpha = this.premultipliedAlpha;
+					if (loaded === 6) {
+						texture.needsUpdate = true;
+						if (onLoad) onLoad(texture);
+					}
+				}, undefined, onError);
+			}
 
-			if ( this.wireframe === true ) data.wireframe = this.wireframe;
-			if ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;
-			if ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;
-			if ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;
+			for (let i = 0; i < urls.length; ++i) {
+				loadTexture(i);
+			}
 
-			if ( this.morphTargets === true ) data.morphTargets = true;
-			if ( this.skinning === true ) data.skinning = true;
+			return texture;
+		}
 
-			if ( this.visible === false ) data.visible = false;
-			if ( JSON.stringify( this.userData ) !== '{}' ) data.userData = this.userData;
+	}
 
-			// TODO: Copied from Object3D.toJSON
+	/**
+	 * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)
+	 *
+	 * Sub classes have to implement the parse() method which will be used in load().
+	 */
 
-			function extractFromCache( cache ) {
+	class DataTextureLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
 
-				var values = [];
+		load(url, onLoad, onProgress, onError) {
+			const scope = this;
+			const texture = new DataTexture();
+			const loader = new FileLoader(this.manager);
+			loader.setResponseType('arraybuffer');
+			loader.setRequestHeader(this.requestHeader);
+			loader.setPath(this.path);
+			loader.setWithCredentials(scope.withCredentials);
+			loader.load(url, function (buffer) {
+				const texData = scope.parse(buffer);
+				if (!texData) return;
 
-				for ( var key in cache ) {
+				if (texData.image !== undefined) {
+					texture.image = texData.image;
+				} else if (texData.data !== undefined) {
+					texture.image.width = texData.width;
+					texture.image.height = texData.height;
+					texture.image.data = texData.data;
+				}
 
-					var data = cache[ key ];
-					delete data.metadata;
-					values.push( data );
+				texture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;
+				texture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;
+				texture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;
+				texture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;
+				texture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;
 
+				if (texData.encoding !== undefined) {
+					texture.encoding = texData.encoding;
 				}
 
-				return values;
+				if (texData.flipY !== undefined) {
+					texture.flipY = texData.flipY;
+				}
 
-			}
+				if (texData.format !== undefined) {
+					texture.format = texData.format;
+				}
 
-			if ( isRoot ) {
+				if (texData.type !== undefined) {
+					texture.type = texData.type;
+				}
 
-				var textures = extractFromCache( meta.textures );
-				var images = extractFromCache( meta.images );
+				if (texData.mipmaps !== undefined) {
+					texture.mipmaps = texData.mipmaps;
+					texture.minFilter = LinearMipmapLinearFilter; // presumably...
+				}
 
-				if ( textures.length > 0 ) data.textures = textures;
-				if ( images.length > 0 ) data.images = images;
+				if (texData.mipmapCount === 1) {
+					texture.minFilter = LinearFilter;
+				}
 
-			}
+				if (texData.generateMipmaps !== undefined) {
+					texture.generateMipmaps = texData.generateMipmaps;
+				}
 
-			return data;
+				texture.needsUpdate = true;
+				if (onLoad) onLoad(texture, texData);
+			}, onProgress, onError);
+			return texture;
+		}
 
-		},
+	}
 
-		clone: function () {
+	class TextureLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
 
-			return new this.constructor().copy( this );
+		load(url, onLoad, onProgress, onError) {
+			const texture = new Texture();
+			const loader = new ImageLoader(this.manager);
+			loader.setCrossOrigin(this.crossOrigin);
+			loader.setPath(this.path);
+			loader.load(url, function (image) {
+				texture.image = image; // JPEGs can't have an alpha channel, so memory can be saved by storing them as RGB.
 
-		},
+				const isJPEG = url.search(/\.jpe?g($|\?)/i) > 0 || url.search(/^data\:image\/jpeg/) === 0;
+				texture.format = isJPEG ? RGBFormat : RGBAFormat;
+				texture.needsUpdate = true;
 
-		copy: function ( source ) {
+				if (onLoad !== undefined) {
+					onLoad(texture);
+				}
+			}, onProgress, onError);
+			return texture;
+		}
 
-			this.name = source.name;
+	}
 
-			this.fog = source.fog;
-			this.lights = source.lights;
+	/**************************************************************
+	 *	Curved Path - a curve path is simply a array of connected
+	 *	curves, but retains the api of a curve
+	 **************************************************************/
 
-			this.blending = source.blending;
-			this.side = source.side;
-			this.flatShading = source.flatShading;
-			this.vertexColors = source.vertexColors;
+	class CurvePath extends Curve {
+		constructor() {
+			super();
+			this.type = 'CurvePath';
+			this.curves = [];
+			this.autoClose = false; // Automatically closes the path
+		}
 
-			this.opacity = source.opacity;
-			this.transparent = source.transparent;
+		add(curve) {
+			this.curves.push(curve);
+		}
 
-			this.blendSrc = source.blendSrc;
-			this.blendDst = source.blendDst;
-			this.blendEquation = source.blendEquation;
-			this.blendSrcAlpha = source.blendSrcAlpha;
-			this.blendDstAlpha = source.blendDstAlpha;
-			this.blendEquationAlpha = source.blendEquationAlpha;
+		closePath() {
+			// Add a line curve if start and end of lines are not connected
+			const startPoint = this.curves[0].getPoint(0);
+			const endPoint = this.curves[this.curves.length - 1].getPoint(1);
 
-			this.depthFunc = source.depthFunc;
-			this.depthTest = source.depthTest;
-			this.depthWrite = source.depthWrite;
+			if (!startPoint.equals(endPoint)) {
+				this.curves.push(new LineCurve(endPoint, startPoint));
+			}
+		} // To get accurate point with reference to
+		// entire path distance at time t,
+		// following has to be done:
+		// 1. Length of each sub path have to be known
+		// 2. Locate and identify type of curve
+		// 3. Get t for the curve
+		// 4. Return curve.getPointAt(t')
 
-			this.colorWrite = source.colorWrite;
 
-			this.precision = source.precision;
+		getPoint(t) {
+			const d = t * this.getLength();
+			const curveLengths = this.getCurveLengths();
+			let i = 0; // To think about boundaries points.
 
-			this.polygonOffset = source.polygonOffset;
-			this.polygonOffsetFactor = source.polygonOffsetFactor;
-			this.polygonOffsetUnits = source.polygonOffsetUnits;
+			while (i < curveLengths.length) {
+				if (curveLengths[i] >= d) {
+					const diff = curveLengths[i] - d;
+					const curve = this.curves[i];
+					const segmentLength = curve.getLength();
+					const u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;
+					return curve.getPointAt(u);
+				}
 
-			this.dithering = source.dithering;
+				i++;
+			}
 
-			this.alphaTest = source.alphaTest;
-			this.premultipliedAlpha = source.premultipliedAlpha;
+			return null; // loop where sum != 0, sum > d , sum+1 <d
+		} // We cannot use the default THREE.Curve getPoint() with getLength() because in
+		// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath
+		// getPoint() depends on getLength
 
-			this.overdraw = source.overdraw;
 
-			this.visible = source.visible;
-			this.userData = JSON.parse( JSON.stringify( source.userData ) );
+		getLength() {
+			const lens = this.getCurveLengths();
+			return lens[lens.length - 1];
+		} // cacheLengths must be recalculated.
 
-			this.clipShadows = source.clipShadows;
-			this.clipIntersection = source.clipIntersection;
 
-			var srcPlanes = source.clippingPlanes,
-				dstPlanes = null;
+		updateArcLengths() {
+			this.needsUpdate = true;
+			this.cacheLengths = null;
+			this.getCurveLengths();
+		} // Compute lengths and cache them
+		// We cannot overwrite getLengths() because UtoT mapping uses it.
 
-			if ( srcPlanes !== null ) {
 
-				var n = srcPlanes.length;
-				dstPlanes = new Array( n );
+		getCurveLengths() {
+			// We use cache values if curves and cache array are same length
+			if (this.cacheLengths && this.cacheLengths.length === this.curves.length) {
+				return this.cacheLengths;
+			} // Get length of sub-curve
+			// Push sums into cached array
+
 
-				for ( var i = 0; i !== n; ++ i )
-					dstPlanes[ i ] = srcPlanes[ i ].clone();
+			const lengths = [];
+			let sums = 0;
 
+			for (let i = 0, l = this.curves.length; i < l; i++) {
+				sums += this.curves[i].getLength();
+				lengths.push(sums);
 			}
 
-			this.clippingPlanes = dstPlanes;
+			this.cacheLengths = lengths;
+			return lengths;
+		}
 
-			this.shadowSide = source.shadowSide;
+		getSpacedPoints(divisions = 40) {
+			const points = [];
 
-			return this;
+			for (let i = 0; i <= divisions; i++) {
+				points.push(this.getPoint(i / divisions));
+			}
 
-		},
+			if (this.autoClose) {
+				points.push(points[0]);
+			}
 
-		dispose: function () {
+			return points;
+		}
 
-			this.dispatchEvent( { type: 'dispose' } );
+		getPoints(divisions = 12) {
+			const points = [];
+			let last;
 
-		}
+			for (let i = 0, curves = this.curves; i < curves.length; i++) {
+				const curve = curves[i];
+				const resolution = curve && curve.isEllipseCurve ? divisions * 2 : curve && (curve.isLineCurve || curve.isLineCurve3) ? 1 : curve && curve.isSplineCurve ? divisions * curve.points.length : divisions;
+				const pts = curve.getPoints(resolution);
 
-	} );
+				for (let j = 0; j < pts.length; j++) {
+					const point = pts[j];
+					if (last && last.equals(point)) continue; // ensures no consecutive points are duplicates
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 *
-	 * parameters = {
-	 *  color: <hex>,
-	 *  opacity: <float>,
-	 *  map: new THREE.Texture( <Image> ),
-	 *
-	 *  lightMap: new THREE.Texture( <Image> ),
-	 *  lightMapIntensity: <float>
-	 *
-	 *  aoMap: new THREE.Texture( <Image> ),
-	 *  aoMapIntensity: <float>
-	 *
-	 *  specularMap: new THREE.Texture( <Image> ),
-	 *
-	 *  alphaMap: new THREE.Texture( <Image> ),
-	 *
-	 *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
-	 *  combine: THREE.Multiply,
-	 *  reflectivity: <float>,
-	 *  refractionRatio: <float>,
-	 *
-	 *  depthTest: <bool>,
-	 *  depthWrite: <bool>,
-	 *
-	 *  wireframe: <boolean>,
-	 *  wireframeLinewidth: <float>,
-	 *
-	 *  skinning: <bool>,
-	 *  morphTargets: <bool>
-	 * }
-	 */
+					points.push(point);
+					last = point;
+				}
+			}
 
-	function MeshBasicMaterial( parameters ) {
+			if (this.autoClose && points.length > 1 && !points[points.length - 1].equals(points[0])) {
+				points.push(points[0]);
+			}
 
-		Material.call( this );
+			return points;
+		}
 
-		this.type = 'MeshBasicMaterial';
+		copy(source) {
+			super.copy(source);
+			this.curves = [];
 
-		this.color = new Color( 0xffffff ); // emissive
+			for (let i = 0, l = source.curves.length; i < l; i++) {
+				const curve = source.curves[i];
+				this.curves.push(curve.clone());
+			}
 
-		this.map = null;
+			this.autoClose = source.autoClose;
+			return this;
+		}
 
-		this.lightMap = null;
-		this.lightMapIntensity = 1.0;
+		toJSON() {
+			const data = super.toJSON();
+			data.autoClose = this.autoClose;
+			data.curves = [];
 
-		this.aoMap = null;
-		this.aoMapIntensity = 1.0;
+			for (let i = 0, l = this.curves.length; i < l; i++) {
+				const curve = this.curves[i];
+				data.curves.push(curve.toJSON());
+			}
 
-		this.specularMap = null;
+			return data;
+		}
 
-		this.alphaMap = null;
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.autoClose = json.autoClose;
+			this.curves = [];
 
-		this.envMap = null;
-		this.combine = MultiplyOperation;
-		this.reflectivity = 1;
-		this.refractionRatio = 0.98;
+			for (let i = 0, l = json.curves.length; i < l; i++) {
+				const curve = json.curves[i];
+				this.curves.push(new Curves[curve.type]().fromJSON(curve));
+			}
 
-		this.wireframe = false;
-		this.wireframeLinewidth = 1;
-		this.wireframeLinecap = 'round';
-		this.wireframeLinejoin = 'round';
+			return this;
+		}
 
-		this.skinning = false;
-		this.morphTargets = false;
+	}
 
-		this.lights = false;
+	class Path extends CurvePath {
+		constructor(points) {
+			super();
+			this.type = 'Path';
+			this.currentPoint = new Vector2();
 
-		this.setValues( parameters );
+			if (points) {
+				this.setFromPoints(points);
+			}
+		}
 
-	}
+		setFromPoints(points) {
+			this.moveTo(points[0].x, points[0].y);
 
-	MeshBasicMaterial.prototype = Object.create( Material.prototype );
-	MeshBasicMaterial.prototype.constructor = MeshBasicMaterial;
+			for (let i = 1, l = points.length; i < l; i++) {
+				this.lineTo(points[i].x, points[i].y);
+			}
 
-	MeshBasicMaterial.prototype.isMeshBasicMaterial = true;
+			return this;
+		}
 
-	MeshBasicMaterial.prototype.copy = function ( source ) {
+		moveTo(x, y) {
+			this.currentPoint.set(x, y); // TODO consider referencing vectors instead of copying?
 
-		Material.prototype.copy.call( this, source );
+			return this;
+		}
 
-		this.color.copy( source.color );
+		lineTo(x, y) {
+			const curve = new LineCurve(this.currentPoint.clone(), new Vector2(x, y));
+			this.curves.push(curve);
+			this.currentPoint.set(x, y);
+			return this;
+		}
 
-		this.map = source.map;
+		quadraticCurveTo(aCPx, aCPy, aX, aY) {
+			const curve = new QuadraticBezierCurve(this.currentPoint.clone(), new Vector2(aCPx, aCPy), new Vector2(aX, aY));
+			this.curves.push(curve);
+			this.currentPoint.set(aX, aY);
+			return this;
+		}
 
-		this.lightMap = source.lightMap;
-		this.lightMapIntensity = source.lightMapIntensity;
+		bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY) {
+			const curve = new CubicBezierCurve(this.currentPoint.clone(), new Vector2(aCP1x, aCP1y), new Vector2(aCP2x, aCP2y), new Vector2(aX, aY));
+			this.curves.push(curve);
+			this.currentPoint.set(aX, aY);
+			return this;
+		}
 
-		this.aoMap = source.aoMap;
-		this.aoMapIntensity = source.aoMapIntensity;
+		splineThru(pts
+		/*Array of Vector*/
+		) {
+			const npts = [this.currentPoint.clone()].concat(pts);
+			const curve = new SplineCurve(npts);
+			this.curves.push(curve);
+			this.currentPoint.copy(pts[pts.length - 1]);
+			return this;
+		}
 
-		this.specularMap = source.specularMap;
+		arc(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
+			const x0 = this.currentPoint.x;
+			const y0 = this.currentPoint.y;
+			this.absarc(aX + x0, aY + y0, aRadius, aStartAngle, aEndAngle, aClockwise);
+			return this;
+		}
 
-		this.alphaMap = source.alphaMap;
+		absarc(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
+			this.absellipse(aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise);
+			return this;
+		}
 
-		this.envMap = source.envMap;
-		this.combine = source.combine;
-		this.reflectivity = source.reflectivity;
-		this.refractionRatio = source.refractionRatio;
+		ellipse(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation) {
+			const x0 = this.currentPoint.x;
+			const y0 = this.currentPoint.y;
+			this.absellipse(aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation);
+			return this;
+		}
 
-		this.wireframe = source.wireframe;
-		this.wireframeLinewidth = source.wireframeLinewidth;
-		this.wireframeLinecap = source.wireframeLinecap;
-		this.wireframeLinejoin = source.wireframeLinejoin;
+		absellipse(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation) {
+			const curve = new EllipseCurve(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation);
 
-		this.skinning = source.skinning;
-		this.morphTargets = source.morphTargets;
+			if (this.curves.length > 0) {
+				// if a previous curve is present, attempt to join
+				const firstPoint = curve.getPoint(0);
 
-		return this;
+				if (!firstPoint.equals(this.currentPoint)) {
+					this.lineTo(firstPoint.x, firstPoint.y);
+				}
+			}
 
-	};
+			this.curves.push(curve);
+			const lastPoint = curve.getPoint(1);
+			this.currentPoint.copy(lastPoint);
+			return this;
+		}
 
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 *
-	 * parameters = {
-	 *  defines: { "label" : "value" },
-	 *  uniforms: { "parameter1": { value: 1.0 }, "parameter2": { value2: 2 } },
-	 *
-	 *  fragmentShader: <string>,
-	 *  vertexShader: <string>,
-	 *
-	 *  wireframe: <boolean>,
-	 *  wireframeLinewidth: <float>,
-	 *
-	 *  lights: <bool>,
-	 *
-	 *  skinning: <bool>,
-	 *  morphTargets: <bool>,
-	 *  morphNormals: <bool>
-	 * }
-	 */
+		copy(source) {
+			super.copy(source);
+			this.currentPoint.copy(source.currentPoint);
+			return this;
+		}
 
-	function ShaderMaterial( parameters ) {
+		toJSON() {
+			const data = super.toJSON();
+			data.currentPoint = this.currentPoint.toArray();
+			return data;
+		}
+
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.currentPoint.fromArray(json.currentPoint);
+			return this;
+		}
 
-		Material.call( this );
+	}
 
-		this.type = 'ShaderMaterial';
+	class Shape extends Path {
+		constructor(points) {
+			super(points);
+			this.uuid = generateUUID();
+			this.type = 'Shape';
+			this.holes = [];
+		}
 
-		this.defines = {};
-		this.uniforms = {};
+		getPointsHoles(divisions) {
+			const holesPts = [];
 
-		this.vertexShader = 'void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}';
-		this.fragmentShader = 'void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}';
+			for (let i = 0, l = this.holes.length; i < l; i++) {
+				holesPts[i] = this.holes[i].getPoints(divisions);
+			}
 
-		this.linewidth = 1;
+			return holesPts;
+		} // get points of shape and holes (keypoints based on segments parameter)
 
-		this.wireframe = false;
-		this.wireframeLinewidth = 1;
 
-		this.fog = false; // set to use scene fog
-		this.lights = false; // set to use scene lights
-		this.clipping = false; // set to use user-defined clipping planes
+		extractPoints(divisions) {
+			return {
+				shape: this.getPoints(divisions),
+				holes: this.getPointsHoles(divisions)
+			};
+		}
 
-		this.skinning = false; // set to use skinning attribute streams
-		this.morphTargets = false; // set to use morph targets
-		this.morphNormals = false; // set to use morph normals
+		copy(source) {
+			super.copy(source);
+			this.holes = [];
 
-		this.extensions = {
-			derivatives: false, // set to use derivatives
-			fragDepth: false, // set to use fragment depth values
-			drawBuffers: false, // set to use draw buffers
-			shaderTextureLOD: false // set to use shader texture LOD
-		};
+			for (let i = 0, l = source.holes.length; i < l; i++) {
+				const hole = source.holes[i];
+				this.holes.push(hole.clone());
+			}
 
-		// When rendered geometry doesn't include these attributes but the material does,
-		// use these default values in WebGL. This avoids errors when buffer data is missing.
-		this.defaultAttributeValues = {
-			'color': [ 1, 1, 1 ],
-			'uv': [ 0, 0 ],
-			'uv2': [ 0, 0 ]
-		};
+			return this;
+		}
 
-		this.index0AttributeName = undefined;
-		this.uniformsNeedUpdate = false;
+		toJSON() {
+			const data = super.toJSON();
+			data.uuid = this.uuid;
+			data.holes = [];
 
-		if ( parameters !== undefined ) {
+			for (let i = 0, l = this.holes.length; i < l; i++) {
+				const hole = this.holes[i];
+				data.holes.push(hole.toJSON());
+			}
 
-			if ( parameters.attributes !== undefined ) {
+			return data;
+		}
 
-				console.error( 'THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.' );
+		fromJSON(json) {
+			super.fromJSON(json);
+			this.uuid = json.uuid;
+			this.holes = [];
 
+			for (let i = 0, l = json.holes.length; i < l; i++) {
+				const hole = json.holes[i];
+				this.holes.push(new Path().fromJSON(hole));
 			}
 
-			this.setValues( parameters );
-
+			return this;
 		}
 
 	}
 
-	ShaderMaterial.prototype = Object.create( Material.prototype );
-	ShaderMaterial.prototype.constructor = ShaderMaterial;
+	class Light extends Object3D {
+		constructor(color, intensity = 1) {
+			super();
+			this.type = 'Light';
+			this.color = new Color(color);
+			this.intensity = intensity;
+		}
 
-	ShaderMaterial.prototype.isShaderMaterial = true;
+		dispose() {// Empty here in base class; some subclasses override.
+		}
 
-	ShaderMaterial.prototype.copy = function ( source ) {
+		copy(source) {
+			super.copy(source);
+			this.color.copy(source.color);
+			this.intensity = source.intensity;
+			return this;
+		}
+
+		toJSON(meta) {
+			const data = super.toJSON(meta);
+			data.object.color = this.color.getHex();
+			data.object.intensity = this.intensity;
+			if (this.groundColor !== undefined) data.object.groundColor = this.groundColor.getHex();
+			if (this.distance !== undefined) data.object.distance = this.distance;
+			if (this.angle !== undefined) data.object.angle = this.angle;
+			if (this.decay !== undefined) data.object.decay = this.decay;
+			if (this.penumbra !== undefined) data.object.penumbra = this.penumbra;
+			if (this.shadow !== undefined) data.object.shadow = this.shadow.toJSON();
+			return data;
+		}
 
-		Material.prototype.copy.call( this, source );
+	}
 
-		this.fragmentShader = source.fragmentShader;
-		this.vertexShader = source.vertexShader;
+	Light.prototype.isLight = true;
 
-		this.uniforms = UniformsUtils.clone( source.uniforms );
+	class HemisphereLight extends Light {
+		constructor(skyColor, groundColor, intensity) {
+			super(skyColor, intensity);
+			this.type = 'HemisphereLight';
+			this.position.copy(Object3D.DefaultUp);
+			this.updateMatrix();
+			this.groundColor = new Color(groundColor);
+		}
 
-		this.defines = source.defines;
+		copy(source) {
+			Light.prototype.copy.call(this, source);
+			this.groundColor.copy(source.groundColor);
+			return this;
+		}
 
-		this.wireframe = source.wireframe;
-		this.wireframeLinewidth = source.wireframeLinewidth;
+	}
 
-		this.lights = source.lights;
-		this.clipping = source.clipping;
+	HemisphereLight.prototype.isHemisphereLight = true;
 
-		this.skinning = source.skinning;
+	const _projScreenMatrix$1 = /*@__PURE__*/new Matrix4();
 
-		this.morphTargets = source.morphTargets;
-		this.morphNormals = source.morphNormals;
+	const _lightPositionWorld$1 = /*@__PURE__*/new Vector3();
 
-		this.extensions = source.extensions;
+	const _lookTarget$1 = /*@__PURE__*/new Vector3();
 
-		return this;
+	class LightShadow {
+		constructor(camera) {
+			this.camera = camera;
+			this.bias = 0;
+			this.normalBias = 0;
+			this.radius = 1;
+			this.mapSize = new Vector2(512, 512);
+			this.map = null;
+			this.mapPass = null;
+			this.matrix = new Matrix4();
+			this.autoUpdate = true;
+			this.needsUpdate = false;
+			this._frustum = new Frustum();
+			this._frameExtents = new Vector2(1, 1);
+			this._viewportCount = 1;
+			this._viewports = [new Vector4(0, 0, 1, 1)];
+		}
 
-	};
+		getViewportCount() {
+			return this._viewportCount;
+		}
 
-	ShaderMaterial.prototype.toJSON = function ( meta ) {
+		getFrustum() {
+			return this._frustum;
+		}
 
-		var data = Material.prototype.toJSON.call( this, meta );
+		updateMatrices(light) {
+			const shadowCamera = this.camera;
+			const shadowMatrix = this.matrix;
 
-		data.uniforms = this.uniforms;
-		data.vertexShader = this.vertexShader;
-		data.fragmentShader = this.fragmentShader;
+			_lightPositionWorld$1.setFromMatrixPosition(light.matrixWorld);
 
-		return data;
+			shadowCamera.position.copy(_lightPositionWorld$1);
 
-	};
+			_lookTarget$1.setFromMatrixPosition(light.target.matrixWorld);
 
-	/**
-	 * @author bhouston / http://clara.io
-	 */
+			shadowCamera.lookAt(_lookTarget$1);
+			shadowCamera.updateMatrixWorld();
 
-	function Ray( origin, direction ) {
+			_projScreenMatrix$1.multiplyMatrices(shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse);
 
-		this.origin = ( origin !== undefined ) ? origin : new Vector3();
-		this.direction = ( direction !== undefined ) ? direction : new Vector3();
+			this._frustum.setFromProjectionMatrix(_projScreenMatrix$1);
 
-	}
+			shadowMatrix.set(0.5, 0.0, 0.0, 0.5, 0.0, 0.5, 0.0, 0.5, 0.0, 0.0, 0.5, 0.5, 0.0, 0.0, 0.0, 1.0);
+			shadowMatrix.multiply(shadowCamera.projectionMatrix);
+			shadowMatrix.multiply(shadowCamera.matrixWorldInverse);
+		}
 
-	Object.assign( Ray.prototype, {
+		getViewport(viewportIndex) {
+			return this._viewports[viewportIndex];
+		}
 
-		set: function ( origin, direction ) {
+		getFrameExtents() {
+			return this._frameExtents;
+		}
 
-			this.origin.copy( origin );
-			this.direction.copy( direction );
+		dispose() {
+			if (this.map) {
+				this.map.dispose();
+			}
 
-			return this;
+			if (this.mapPass) {
+				this.mapPass.dispose();
+			}
+		}
 
-		},
+		copy(source) {
+			this.camera = source.camera.clone();
+			this.bias = source.bias;
+			this.radius = source.radius;
+			this.mapSize.copy(source.mapSize);
+			return this;
+		}
 
-		clone: function () {
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-			return new this.constructor().copy( this );
+		toJSON() {
+			const object = {};
+			if (this.bias !== 0) object.bias = this.bias;
+			if (this.normalBias !== 0) object.normalBias = this.normalBias;
+			if (this.radius !== 1) object.radius = this.radius;
+			if (this.mapSize.x !== 512 || this.mapSize.y !== 512) object.mapSize = this.mapSize.toArray();
+			object.camera = this.camera.toJSON(false).object;
+			delete object.camera.matrix;
+			return object;
+		}
 
-		},
+	}
 
-		copy: function ( ray ) {
+	class SpotLightShadow extends LightShadow {
+		constructor() {
+			super(new PerspectiveCamera(50, 1, 0.5, 500));
+			this.focus = 1;
+		}
 
-			this.origin.copy( ray.origin );
-			this.direction.copy( ray.direction );
+		updateMatrices(light) {
+			const camera = this.camera;
+			const fov = RAD2DEG * 2 * light.angle * this.focus;
+			const aspect = this.mapSize.width / this.mapSize.height;
+			const far = light.distance || camera.far;
 
-			return this;
+			if (fov !== camera.fov || aspect !== camera.aspect || far !== camera.far) {
+				camera.fov = fov;
+				camera.aspect = aspect;
+				camera.far = far;
+				camera.updateProjectionMatrix();
+			}
 
-		},
+			super.updateMatrices(light);
+		}
 
-		at: function ( t, target ) {
+		copy(source) {
+			super.copy(source);
+			this.focus = source.focus;
+			return this;
+		}
 
-			if ( target === undefined ) {
+	}
 
-				console.warn( 'THREE.Ray: .at() target is now required' );
-				target = new Vector3();
+	SpotLightShadow.prototype.isSpotLightShadow = true;
 
-			}
+	class SpotLight extends Light {
+		constructor(color, intensity, distance = 0, angle = Math.PI / 3, penumbra = 0, decay = 1) {
+			super(color, intensity);
+			this.type = 'SpotLight';
+			this.position.copy(Object3D.DefaultUp);
+			this.updateMatrix();
+			this.target = new Object3D();
+			this.distance = distance;
+			this.angle = angle;
+			this.penumbra = penumbra;
+			this.decay = decay; // for physically correct lights, should be 2.
 
-			return target.copy( this.direction ).multiplyScalar( t ).add( this.origin );
+			this.shadow = new SpotLightShadow();
+		}
 
-		},
+		get power() {
+			// intensity = power per solid angle.
+			// ref: equation (17) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
+			return this.intensity * Math.PI;
+		}
 
-		lookAt: function ( v ) {
+		set power(power) {
+			// intensity = power per solid angle.
+			// ref: equation (17) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
+			this.intensity = power / Math.PI;
+		}
 
-			this.direction.copy( v ).sub( this.origin ).normalize();
+		dispose() {
+			this.shadow.dispose();
+		}
 
+		copy(source) {
+			super.copy(source);
+			this.distance = source.distance;
+			this.angle = source.angle;
+			this.penumbra = source.penumbra;
+			this.decay = source.decay;
+			this.target = source.target.clone();
+			this.shadow = source.shadow.clone();
 			return this;
+		}
 
-		},
+	}
 
-		recast: function () {
+	SpotLight.prototype.isSpotLight = true;
 
-			var v1 = new Vector3();
+	const _projScreenMatrix = /*@__PURE__*/new Matrix4();
 
-			return function recast( t ) {
+	const _lightPositionWorld = /*@__PURE__*/new Vector3();
 
-				this.origin.copy( this.at( t, v1 ) );
+	const _lookTarget = /*@__PURE__*/new Vector3();
 
-				return this;
+	class PointLightShadow extends LightShadow {
+		constructor() {
+			super(new PerspectiveCamera(90, 1, 0.5, 500));
+			this._frameExtents = new Vector2(4, 2);
+			this._viewportCount = 6;
+			this._viewports = [// These viewports map a cube-map onto a 2D texture with the
+			// following orientation:
+			//
+			//	xzXZ
+			//	 y Y
+			//
+			// X - Positive x direction
+			// x - Negative x direction
+			// Y - Positive y direction
+			// y - Negative y direction
+			// Z - Positive z direction
+			// z - Negative z direction
+			// positive X
+			new Vector4(2, 1, 1, 1), // negative X
+			new Vector4(0, 1, 1, 1), // positive Z
+			new Vector4(3, 1, 1, 1), // negative Z
+			new Vector4(1, 1, 1, 1), // positive Y
+			new Vector4(3, 0, 1, 1), // negative Y
+			new Vector4(1, 0, 1, 1)];
+			this._cubeDirections = [new Vector3(1, 0, 0), new Vector3(-1, 0, 0), new Vector3(0, 0, 1), new Vector3(0, 0, -1), new Vector3(0, 1, 0), new Vector3(0, -1, 0)];
+			this._cubeUps = [new Vector3(0, 1, 0), new Vector3(0, 1, 0), new Vector3(0, 1, 0), new Vector3(0, 1, 0), new Vector3(0, 0, 1), new Vector3(0, 0, -1)];
+		}
+
+		updateMatrices(light, viewportIndex = 0) {
+			const camera = this.camera;
+			const shadowMatrix = this.matrix;
+			const far = light.distance || camera.far;
+
+			if (far !== camera.far) {
+				camera.far = far;
+				camera.updateProjectionMatrix();
+			}
 
-			};
+			_lightPositionWorld.setFromMatrixPosition(light.matrixWorld);
 
-		}(),
+			camera.position.copy(_lightPositionWorld);
 
-		closestPointToPoint: function ( point, target ) {
+			_lookTarget.copy(camera.position);
 
-			if ( target === undefined ) {
+			_lookTarget.add(this._cubeDirections[viewportIndex]);
 
-				console.warn( 'THREE.Ray: .closestPointToPoint() target is now required' );
-				target = new Vector3();
+			camera.up.copy(this._cubeUps[viewportIndex]);
+			camera.lookAt(_lookTarget);
+			camera.updateMatrixWorld();
+			shadowMatrix.makeTranslation(-_lightPositionWorld.x, -_lightPositionWorld.y, -_lightPositionWorld.z);
 
-			}
+			_projScreenMatrix.multiplyMatrices(camera.projectionMatrix, camera.matrixWorldInverse);
 
-			target.subVectors( point, this.origin );
+			this._frustum.setFromProjectionMatrix(_projScreenMatrix);
+		}
 
-			var directionDistance = target.dot( this.direction );
+	}
 
-			if ( directionDistance < 0 ) {
+	PointLightShadow.prototype.isPointLightShadow = true;
 
-				return target.copy( this.origin );
+	class PointLight extends Light {
+		constructor(color, intensity, distance = 0, decay = 1) {
+			super(color, intensity);
+			this.type = 'PointLight';
+			this.distance = distance;
+			this.decay = decay; // for physically correct lights, should be 2.
 
-			}
+			this.shadow = new PointLightShadow();
+		}
 
-			return target.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );
+		get power() {
+			// intensity = power per solid angle.
+			// ref: equation (15) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
+			return this.intensity * 4 * Math.PI;
+		}
 
-		},
+		set power(power) {
+			// intensity = power per solid angle.
+			// ref: equation (15) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
+			this.intensity = power / (4 * Math.PI);
+		}
 
-		distanceToPoint: function ( point ) {
+		dispose() {
+			this.shadow.dispose();
+		}
 
-			return Math.sqrt( this.distanceSqToPoint( point ) );
+		copy(source) {
+			super.copy(source);
+			this.distance = source.distance;
+			this.decay = source.decay;
+			this.shadow = source.shadow.clone();
+			return this;
+		}
 
-		},
+	}
 
-		distanceSqToPoint: function () {
+	PointLight.prototype.isPointLight = true;
 
-			var v1 = new Vector3();
+	class OrthographicCamera extends Camera {
+		constructor(left = -1, right = 1, top = 1, bottom = -1, near = 0.1, far = 2000) {
+			super();
+			this.type = 'OrthographicCamera';
+			this.zoom = 1;
+			this.view = null;
+			this.left = left;
+			this.right = right;
+			this.top = top;
+			this.bottom = bottom;
+			this.near = near;
+			this.far = far;
+			this.updateProjectionMatrix();
+		}
 
-			return function distanceSqToPoint( point ) {
+		copy(source, recursive) {
+			super.copy(source, recursive);
+			this.left = source.left;
+			this.right = source.right;
+			this.top = source.top;
+			this.bottom = source.bottom;
+			this.near = source.near;
+			this.far = source.far;
+			this.zoom = source.zoom;
+			this.view = source.view === null ? null : Object.assign({}, source.view);
+			return this;
+		}
 
-				var directionDistance = v1.subVectors( point, this.origin ).dot( this.direction );
+		setViewOffset(fullWidth, fullHeight, x, y, width, height) {
+			if (this.view === null) {
+				this.view = {
+					enabled: true,
+					fullWidth: 1,
+					fullHeight: 1,
+					offsetX: 0,
+					offsetY: 0,
+					width: 1,
+					height: 1
+				};
+			}
 
-				// point behind the ray
+			this.view.enabled = true;
+			this.view.fullWidth = fullWidth;
+			this.view.fullHeight = fullHeight;
+			this.view.offsetX = x;
+			this.view.offsetY = y;
+			this.view.width = width;
+			this.view.height = height;
+			this.updateProjectionMatrix();
+		}
 
-				if ( directionDistance < 0 ) {
+		clearViewOffset() {
+			if (this.view !== null) {
+				this.view.enabled = false;
+			}
 
-					return this.origin.distanceToSquared( point );
+			this.updateProjectionMatrix();
+		}
 
-				}
+		updateProjectionMatrix() {
+			const dx = (this.right - this.left) / (2 * this.zoom);
+			const dy = (this.top - this.bottom) / (2 * this.zoom);
+			const cx = (this.right + this.left) / 2;
+			const cy = (this.top + this.bottom) / 2;
+			let left = cx - dx;
+			let right = cx + dx;
+			let top = cy + dy;
+			let bottom = cy - dy;
 
-				v1.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );
+			if (this.view !== null && this.view.enabled) {
+				const scaleW = (this.right - this.left) / this.view.fullWidth / this.zoom;
+				const scaleH = (this.top - this.bottom) / this.view.fullHeight / this.zoom;
+				left += scaleW * this.view.offsetX;
+				right = left + scaleW * this.view.width;
+				top -= scaleH * this.view.offsetY;
+				bottom = top - scaleH * this.view.height;
+			}
 
-				return v1.distanceToSquared( point );
+			this.projectionMatrix.makeOrthographic(left, right, top, bottom, this.near, this.far);
+			this.projectionMatrixInverse.copy(this.projectionMatrix).invert();
+		}
 
-			};
+		toJSON(meta) {
+			const data = super.toJSON(meta);
+			data.object.zoom = this.zoom;
+			data.object.left = this.left;
+			data.object.right = this.right;
+			data.object.top = this.top;
+			data.object.bottom = this.bottom;
+			data.object.near = this.near;
+			data.object.far = this.far;
+			if (this.view !== null) data.object.view = Object.assign({}, this.view);
+			return data;
+		}
 
-		}(),
+	}
 
-		distanceSqToSegment: function () {
+	OrthographicCamera.prototype.isOrthographicCamera = true;
 
-			var segCenter = new Vector3();
-			var segDir = new Vector3();
-			var diff = new Vector3();
+	class DirectionalLightShadow extends LightShadow {
+		constructor() {
+			super(new OrthographicCamera(-5, 5, 5, -5, 0.5, 500));
+		}
 
-			return function distanceSqToSegment( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {
+	}
 
-				// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteDistRaySegment.h
-				// It returns the min distance between the ray and the segment
-				// defined by v0 and v1
-				// It can also set two optional targets :
-				// - The closest point on the ray
-				// - The closest point on the segment
+	DirectionalLightShadow.prototype.isDirectionalLightShadow = true;
 
-				segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );
-				segDir.copy( v1 ).sub( v0 ).normalize();
-				diff.copy( this.origin ).sub( segCenter );
+	class DirectionalLight extends Light {
+		constructor(color, intensity) {
+			super(color, intensity);
+			this.type = 'DirectionalLight';
+			this.position.copy(Object3D.DefaultUp);
+			this.updateMatrix();
+			this.target = new Object3D();
+			this.shadow = new DirectionalLightShadow();
+		}
 
-				var segExtent = v0.distanceTo( v1 ) * 0.5;
-				var a01 = - this.direction.dot( segDir );
-				var b0 = diff.dot( this.direction );
-				var b1 = - diff.dot( segDir );
-				var c = diff.lengthSq();
-				var det = Math.abs( 1 - a01 * a01 );
-				var s0, s1, sqrDist, extDet;
+		dispose() {
+			this.shadow.dispose();
+		}
 
-				if ( det > 0 ) {
+		copy(source) {
+			super.copy(source);
+			this.target = source.target.clone();
+			this.shadow = source.shadow.clone();
+			return this;
+		}
 
-					// The ray and segment are not parallel.
+	}
 
-					s0 = a01 * b1 - b0;
-					s1 = a01 * b0 - b1;
-					extDet = segExtent * det;
+	DirectionalLight.prototype.isDirectionalLight = true;
 
-					if ( s0 >= 0 ) {
+	class AmbientLight extends Light {
+		constructor(color, intensity) {
+			super(color, intensity);
+			this.type = 'AmbientLight';
+		}
 
-						if ( s1 >= - extDet ) {
-
-							if ( s1 <= extDet ) {
-
-								// region 0
-								// Minimum at interior points of ray and segment.
-
-								var invDet = 1 / det;
-								s0 *= invDet;
-								s1 *= invDet;
-								sqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;
-
-							} else {
-
-								// region 1
-
-								s1 = segExtent;
-								s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
-								sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+	}
 
-							}
+	AmbientLight.prototype.isAmbientLight = true;
 
-						} else {
+	class RectAreaLight extends Light {
+		constructor(color, intensity, width = 10, height = 10) {
+			super(color, intensity);
+			this.type = 'RectAreaLight';
+			this.width = width;
+			this.height = height;
+		}
 
-							// region 5
+		copy(source) {
+			super.copy(source);
+			this.width = source.width;
+			this.height = source.height;
+			return this;
+		}
 
-							s1 = - segExtent;
-							s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
-							sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+		toJSON(meta) {
+			const data = super.toJSON(meta);
+			data.object.width = this.width;
+			data.object.height = this.height;
+			return data;
+		}
 
-						}
+	}
 
-					} else {
+	RectAreaLight.prototype.isRectAreaLight = true;
 
-						if ( s1 <= - extDet ) {
+	/**
+	 * Primary reference:
+	 *	 https://graphics.stanford.edu/papers/envmap/envmap.pdf
+	 *
+	 * Secondary reference:
+	 *	 https://www.ppsloan.org/publications/StupidSH36.pdf
+	 */
+	// 3-band SH defined by 9 coefficients
 
-							// region 4
+	class SphericalHarmonics3 {
+		constructor() {
+			this.coefficients = [];
 
-							s0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );
-							s1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
-							sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+			for (let i = 0; i < 9; i++) {
+				this.coefficients.push(new Vector3());
+			}
+		}
 
-						} else if ( s1 <= extDet ) {
+		set(coefficients) {
+			for (let i = 0; i < 9; i++) {
+				this.coefficients[i].copy(coefficients[i]);
+			}
 
-							// region 3
+			return this;
+		}
 
-							s0 = 0;
-							s1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );
-							sqrDist = s1 * ( s1 + 2 * b1 ) + c;
+		zero() {
+			for (let i = 0; i < 9; i++) {
+				this.coefficients[i].set(0, 0, 0);
+			}
 
-						} else {
+			return this;
+		} // get the radiance in the direction of the normal
+		// target is a Vector3
 
-							// region 2
 
-							s0 = Math.max( 0, - ( a01 * segExtent + b0 ) );
-							s1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
-							sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+		getAt(normal, target) {
+			// normal is assumed to be unit length
+			const x = normal.x,
+						y = normal.y,
+						z = normal.z;
+			const coeff = this.coefficients; // band 0
 
-						}
+			target.copy(coeff[0]).multiplyScalar(0.282095); // band 1
 
-					}
+			target.addScaledVector(coeff[1], 0.488603 * y);
+			target.addScaledVector(coeff[2], 0.488603 * z);
+			target.addScaledVector(coeff[3], 0.488603 * x); // band 2
 
-				} else {
+			target.addScaledVector(coeff[4], 1.092548 * (x * y));
+			target.addScaledVector(coeff[5], 1.092548 * (y * z));
+			target.addScaledVector(coeff[6], 0.315392 * (3.0 * z * z - 1.0));
+			target.addScaledVector(coeff[7], 1.092548 * (x * z));
+			target.addScaledVector(coeff[8], 0.546274 * (x * x - y * y));
+			return target;
+		} // get the irradiance (radiance convolved with cosine lobe) in the direction of the normal
+		// target is a Vector3
+		// https://graphics.stanford.edu/papers/envmap/envmap.pdf
 
-					// Ray and segment are parallel.
 
-					s1 = ( a01 > 0 ) ? - segExtent : segExtent;
-					s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
-					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+		getIrradianceAt(normal, target) {
+			// normal is assumed to be unit length
+			const x = normal.x,
+						y = normal.y,
+						z = normal.z;
+			const coeff = this.coefficients; // band 0
 
-				}
+			target.copy(coeff[0]).multiplyScalar(0.886227); // π * 0.282095
+			// band 1
 
-				if ( optionalPointOnRay ) {
+			target.addScaledVector(coeff[1], 2.0 * 0.511664 * y); // ( 2 * π / 3 ) * 0.488603
 
-					optionalPointOnRay.copy( this.direction ).multiplyScalar( s0 ).add( this.origin );
+			target.addScaledVector(coeff[2], 2.0 * 0.511664 * z);
+			target.addScaledVector(coeff[3], 2.0 * 0.511664 * x); // band 2
 
-				}
+			target.addScaledVector(coeff[4], 2.0 * 0.429043 * x * y); // ( π / 4 ) * 1.092548
 
-				if ( optionalPointOnSegment ) {
+			target.addScaledVector(coeff[5], 2.0 * 0.429043 * y * z);
+			target.addScaledVector(coeff[6], 0.743125 * z * z - 0.247708); // ( π / 4 ) * 0.315392 * 3
 
-					optionalPointOnSegment.copy( segDir ).multiplyScalar( s1 ).add( segCenter );
+			target.addScaledVector(coeff[7], 2.0 * 0.429043 * x * z);
+			target.addScaledVector(coeff[8], 0.429043 * (x * x - y * y)); // ( π / 4 ) * 0.546274
 
-				}
+			return target;
+		}
 
-				return sqrDist;
+		add(sh) {
+			for (let i = 0; i < 9; i++) {
+				this.coefficients[i].add(sh.coefficients[i]);
+			}
 
-			};
+			return this;
+		}
 
-		}(),
+		addScaledSH(sh, s) {
+			for (let i = 0; i < 9; i++) {
+				this.coefficients[i].addScaledVector(sh.coefficients[i], s);
+			}
 
-		intersectSphere: function () {
+			return this;
+		}
 
-			var v1 = new Vector3();
+		scale(s) {
+			for (let i = 0; i < 9; i++) {
+				this.coefficients[i].multiplyScalar(s);
+			}
 
-			return function intersectSphere( sphere, target ) {
+			return this;
+		}
 
-				v1.subVectors( sphere.center, this.origin );
-				var tca = v1.dot( this.direction );
-				var d2 = v1.dot( v1 ) - tca * tca;
-				var radius2 = sphere.radius * sphere.radius;
+		lerp(sh, alpha) {
+			for (let i = 0; i < 9; i++) {
+				this.coefficients[i].lerp(sh.coefficients[i], alpha);
+			}
 
-				if ( d2 > radius2 ) return null;
+			return this;
+		}
 
-				var thc = Math.sqrt( radius2 - d2 );
+		equals(sh) {
+			for (let i = 0; i < 9; i++) {
+				if (!this.coefficients[i].equals(sh.coefficients[i])) {
+					return false;
+				}
+			}
 
-				// t0 = first intersect point - entrance on front of sphere
-				var t0 = tca - thc;
+			return true;
+		}
 
-				// t1 = second intersect point - exit point on back of sphere
-				var t1 = tca + thc;
+		copy(sh) {
+			return this.set(sh.coefficients);
+		}
 
-				// test to see if both t0 and t1 are behind the ray - if so, return null
-				if ( t0 < 0 && t1 < 0 ) return null;
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-				// test to see if t0 is behind the ray:
-				// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,
-				// in order to always return an intersect point that is in front of the ray.
-				if ( t0 < 0 ) return this.at( t1, target );
+		fromArray(array, offset = 0) {
+			const coefficients = this.coefficients;
 
-				// else t0 is in front of the ray, so return the first collision point scaled by t0
-				return this.at( t0, target );
+			for (let i = 0; i < 9; i++) {
+				coefficients[i].fromArray(array, offset + i * 3);
+			}
 
-			};
+			return this;
+		}
 
-		}(),
+		toArray(array = [], offset = 0) {
+			const coefficients = this.coefficients;
 
-		intersectsSphere: function ( sphere ) {
+			for (let i = 0; i < 9; i++) {
+				coefficients[i].toArray(array, offset + i * 3);
+			}
 
-			return this.distanceToPoint( sphere.center ) <= sphere.radius;
+			return array;
+		} // evaluate the basis functions
+		// shBasis is an Array[ 9 ]
 
-		},
 
-		distanceToPlane: function ( plane ) {
+		static getBasisAt(normal, shBasis) {
+			// normal is assumed to be unit length
+			const x = normal.x,
+						y = normal.y,
+						z = normal.z; // band 0
 
-			var denominator = plane.normal.dot( this.direction );
+			shBasis[0] = 0.282095; // band 1
 
-			if ( denominator === 0 ) {
+			shBasis[1] = 0.488603 * y;
+			shBasis[2] = 0.488603 * z;
+			shBasis[3] = 0.488603 * x; // band 2
 
-				// line is coplanar, return origin
-				if ( plane.distanceToPoint( this.origin ) === 0 ) {
+			shBasis[4] = 1.092548 * x * y;
+			shBasis[5] = 1.092548 * y * z;
+			shBasis[6] = 0.315392 * (3 * z * z - 1);
+			shBasis[7] = 1.092548 * x * z;
+			shBasis[8] = 0.546274 * (x * x - y * y);
+		}
 
-					return 0;
+	}
 
-				}
+	SphericalHarmonics3.prototype.isSphericalHarmonics3 = true;
 
-				// Null is preferable to undefined since undefined means.... it is undefined
+	class LightProbe extends Light {
+		constructor(sh = new SphericalHarmonics3(), intensity = 1) {
+			super(undefined, intensity);
+			this.sh = sh;
+		}
 
-				return null;
+		copy(source) {
+			super.copy(source);
+			this.sh.copy(source.sh);
+			return this;
+		}
 
-			}
+		fromJSON(json) {
+			this.intensity = json.intensity; // TODO: Move this bit to Light.fromJSON();
 
-			var t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;
+			this.sh.fromArray(json.sh);
+			return this;
+		}
 
-			// Return if the ray never intersects the plane
+		toJSON(meta) {
+			const data = super.toJSON(meta);
+			data.object.sh = this.sh.toArray();
+			return data;
+		}
 
-			return t >= 0 ? t : null;
+	}
 
-		},
+	LightProbe.prototype.isLightProbe = true;
 
-		intersectPlane: function ( plane, target ) {
+	class MaterialLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+			this.textures = {};
+		}
 
-			var t = this.distanceToPlane( plane );
+		load(url, onLoad, onProgress, onError) {
+			const scope = this;
+			const loader = new FileLoader(scope.manager);
+			loader.setPath(scope.path);
+			loader.setRequestHeader(scope.requestHeader);
+			loader.setWithCredentials(scope.withCredentials);
+			loader.load(url, function (text) {
+				try {
+					onLoad(scope.parse(JSON.parse(text)));
+				} catch (e) {
+					if (onError) {
+						onError(e);
+					} else {
+						console.error(e);
+					}
 
-			if ( t === null ) {
+					scope.manager.itemError(url);
+				}
+			}, onProgress, onError);
+		}
+
+		parse(json) {
+			const textures = this.textures;
+
+			function getTexture(name) {
+				if (textures[name] === undefined) {
+					console.warn('THREE.MaterialLoader: Undefined texture', name);
+				}
+
+				return textures[name];
+			}
+
+			const material = new Materials[json.type]();
+			if (json.uuid !== undefined) material.uuid = json.uuid;
+			if (json.name !== undefined) material.name = json.name;
+			if (json.color !== undefined && material.color !== undefined) material.color.setHex(json.color);
+			if (json.roughness !== undefined) material.roughness = json.roughness;
+			if (json.metalness !== undefined) material.metalness = json.metalness;
+			if (json.sheen !== undefined) material.sheen = new Color().setHex(json.sheen);
+			if (json.emissive !== undefined && material.emissive !== undefined) material.emissive.setHex(json.emissive);
+			if (json.specular !== undefined && material.specular !== undefined) material.specular.setHex(json.specular);
+			if (json.shininess !== undefined) material.shininess = json.shininess;
+			if (json.clearcoat !== undefined) material.clearcoat = json.clearcoat;
+			if (json.clearcoatRoughness !== undefined) material.clearcoatRoughness = json.clearcoatRoughness;
+			if (json.transmission !== undefined) material.transmission = json.transmission;
+			if (json.thickness !== undefined) material.thickness = json.thickness;
+			if (json.attenuationDistance !== undefined) material.attenuationDistance = json.attenuationDistance;
+			if (json.attenuationColor !== undefined && material.attenuationColor !== undefined) material.attenuationColor.setHex(json.attenuationColor);
+			if (json.fog !== undefined) material.fog = json.fog;
+			if (json.flatShading !== undefined) material.flatShading = json.flatShading;
+			if (json.blending !== undefined) material.blending = json.blending;
+			if (json.combine !== undefined) material.combine = json.combine;
+			if (json.side !== undefined) material.side = json.side;
+			if (json.shadowSide !== undefined) material.shadowSide = json.shadowSide;
+			if (json.opacity !== undefined) material.opacity = json.opacity;
+			if (json.transparent !== undefined) material.transparent = json.transparent;
+			if (json.alphaTest !== undefined) material.alphaTest = json.alphaTest;
+			if (json.depthTest !== undefined) material.depthTest = json.depthTest;
+			if (json.depthWrite !== undefined) material.depthWrite = json.depthWrite;
+			if (json.colorWrite !== undefined) material.colorWrite = json.colorWrite;
+			if (json.stencilWrite !== undefined) material.stencilWrite = json.stencilWrite;
+			if (json.stencilWriteMask !== undefined) material.stencilWriteMask = json.stencilWriteMask;
+			if (json.stencilFunc !== undefined) material.stencilFunc = json.stencilFunc;
+			if (json.stencilRef !== undefined) material.stencilRef = json.stencilRef;
+			if (json.stencilFuncMask !== undefined) material.stencilFuncMask = json.stencilFuncMask;
+			if (json.stencilFail !== undefined) material.stencilFail = json.stencilFail;
+			if (json.stencilZFail !== undefined) material.stencilZFail = json.stencilZFail;
+			if (json.stencilZPass !== undefined) material.stencilZPass = json.stencilZPass;
+			if (json.wireframe !== undefined) material.wireframe = json.wireframe;
+			if (json.wireframeLinewidth !== undefined) material.wireframeLinewidth = json.wireframeLinewidth;
+			if (json.wireframeLinecap !== undefined) material.wireframeLinecap = json.wireframeLinecap;
+			if (json.wireframeLinejoin !== undefined) material.wireframeLinejoin = json.wireframeLinejoin;
+			if (json.rotation !== undefined) material.rotation = json.rotation;
+			if (json.linewidth !== 1) material.linewidth = json.linewidth;
+			if (json.dashSize !== undefined) material.dashSize = json.dashSize;
+			if (json.gapSize !== undefined) material.gapSize = json.gapSize;
+			if (json.scale !== undefined) material.scale = json.scale;
+			if (json.polygonOffset !== undefined) material.polygonOffset = json.polygonOffset;
+			if (json.polygonOffsetFactor !== undefined) material.polygonOffsetFactor = json.polygonOffsetFactor;
+			if (json.polygonOffsetUnits !== undefined) material.polygonOffsetUnits = json.polygonOffsetUnits;
+			if (json.morphTargets !== undefined) material.morphTargets = json.morphTargets;
+			if (json.morphNormals !== undefined) material.morphNormals = json.morphNormals;
+			if (json.dithering !== undefined) material.dithering = json.dithering;
+			if (json.alphaToCoverage !== undefined) material.alphaToCoverage = json.alphaToCoverage;
+			if (json.premultipliedAlpha !== undefined) material.premultipliedAlpha = json.premultipliedAlpha;
+			if (json.vertexTangents !== undefined) material.vertexTangents = json.vertexTangents;
+			if (json.visible !== undefined) material.visible = json.visible;
+			if (json.toneMapped !== undefined) material.toneMapped = json.toneMapped;
+			if (json.userData !== undefined) material.userData = json.userData;
+
+			if (json.vertexColors !== undefined) {
+				if (typeof json.vertexColors === 'number') {
+					material.vertexColors = json.vertexColors > 0 ? true : false;
+				} else {
+					material.vertexColors = json.vertexColors;
+				}
+			} // Shader Material
 
-				return null;
 
-			}
+			if (json.uniforms !== undefined) {
+				for (const name in json.uniforms) {
+					const uniform = json.uniforms[name];
+					material.uniforms[name] = {};
 
-			return this.at( t, target );
+					switch (uniform.type) {
+						case 't':
+							material.uniforms[name].value = getTexture(uniform.value);
+							break;
 
-		},
+						case 'c':
+							material.uniforms[name].value = new Color().setHex(uniform.value);
+							break;
 
-		intersectsPlane: function ( plane ) {
+						case 'v2':
+							material.uniforms[name].value = new Vector2().fromArray(uniform.value);
+							break;
 
-			// check if the ray lies on the plane first
+						case 'v3':
+							material.uniforms[name].value = new Vector3().fromArray(uniform.value);
+							break;
 
-			var distToPoint = plane.distanceToPoint( this.origin );
+						case 'v4':
+							material.uniforms[name].value = new Vector4().fromArray(uniform.value);
+							break;
 
-			if ( distToPoint === 0 ) {
+						case 'm3':
+							material.uniforms[name].value = new Matrix3().fromArray(uniform.value);
+							break;
 
-				return true;
+						case 'm4':
+							material.uniforms[name].value = new Matrix4().fromArray(uniform.value);
+							break;
 
+						default:
+							material.uniforms[name].value = uniform.value;
+					}
+				}
 			}
 
-			var denominator = plane.normal.dot( this.direction );
-
-			if ( denominator * distToPoint < 0 ) {
+			if (json.defines !== undefined) material.defines = json.defines;
+			if (json.vertexShader !== undefined) material.vertexShader = json.vertexShader;
+			if (json.fragmentShader !== undefined) material.fragmentShader = json.fragmentShader;
 
-				return true;
+			if (json.extensions !== undefined) {
+				for (const key in json.extensions) {
+					material.extensions[key] = json.extensions[key];
+				}
+			} // Deprecated
 
-			}
 
-			// ray origin is behind the plane (and is pointing behind it)
+			if (json.shading !== undefined) material.flatShading = json.shading === 1; // THREE.FlatShading
+			// for PointsMaterial
 
-			return false;
+			if (json.size !== undefined) material.size = json.size;
+			if (json.sizeAttenuation !== undefined) material.sizeAttenuation = json.sizeAttenuation; // maps
 
-		},
+			if (json.map !== undefined) material.map = getTexture(json.map);
+			if (json.matcap !== undefined) material.matcap = getTexture(json.matcap);
+			if (json.alphaMap !== undefined) material.alphaMap = getTexture(json.alphaMap);
+			if (json.bumpMap !== undefined) material.bumpMap = getTexture(json.bumpMap);
+			if (json.bumpScale !== undefined) material.bumpScale = json.bumpScale;
+			if (json.normalMap !== undefined) material.normalMap = getTexture(json.normalMap);
+			if (json.normalMapType !== undefined) material.normalMapType = json.normalMapType;
 
-		intersectBox: function ( box, target ) {
+			if (json.normalScale !== undefined) {
+				let normalScale = json.normalScale;
 
-			var tmin, tmax, tymin, tymax, tzmin, tzmax;
+				if (Array.isArray(normalScale) === false) {
+					// Blender exporter used to export a scalar. See #7459
+					normalScale = [normalScale, normalScale];
+				}
+
+				material.normalScale = new Vector2().fromArray(normalScale);
+			}
+
+			if (json.displacementMap !== undefined) material.displacementMap = getTexture(json.displacementMap);
+			if (json.displacementScale !== undefined) material.displacementScale = json.displacementScale;
+			if (json.displacementBias !== undefined) material.displacementBias = json.displacementBias;
+			if (json.roughnessMap !== undefined) material.roughnessMap = getTexture(json.roughnessMap);
+			if (json.metalnessMap !== undefined) material.metalnessMap = getTexture(json.metalnessMap);
+			if (json.emissiveMap !== undefined) material.emissiveMap = getTexture(json.emissiveMap);
+			if (json.emissiveIntensity !== undefined) material.emissiveIntensity = json.emissiveIntensity;
+			if (json.specularMap !== undefined) material.specularMap = getTexture(json.specularMap);
+			if (json.envMap !== undefined) material.envMap = getTexture(json.envMap);
+			if (json.envMapIntensity !== undefined) material.envMapIntensity = json.envMapIntensity;
+			if (json.reflectivity !== undefined) material.reflectivity = json.reflectivity;
+			if (json.refractionRatio !== undefined) material.refractionRatio = json.refractionRatio;
+			if (json.lightMap !== undefined) material.lightMap = getTexture(json.lightMap);
+			if (json.lightMapIntensity !== undefined) material.lightMapIntensity = json.lightMapIntensity;
+			if (json.aoMap !== undefined) material.aoMap = getTexture(json.aoMap);
+			if (json.aoMapIntensity !== undefined) material.aoMapIntensity = json.aoMapIntensity;
+			if (json.gradientMap !== undefined) material.gradientMap = getTexture(json.gradientMap);
+			if (json.clearcoatMap !== undefined) material.clearcoatMap = getTexture(json.clearcoatMap);
+			if (json.clearcoatRoughnessMap !== undefined) material.clearcoatRoughnessMap = getTexture(json.clearcoatRoughnessMap);
+			if (json.clearcoatNormalMap !== undefined) material.clearcoatNormalMap = getTexture(json.clearcoatNormalMap);
+			if (json.clearcoatNormalScale !== undefined) material.clearcoatNormalScale = new Vector2().fromArray(json.clearcoatNormalScale);
+			if (json.transmissionMap !== undefined) material.transmissionMap = getTexture(json.transmissionMap);
+			if (json.thicknessMap !== undefined) material.thicknessMap = getTexture(json.thicknessMap);
+			return material;
+		}
 
-			var invdirx = 1 / this.direction.x,
-				invdiry = 1 / this.direction.y,
-				invdirz = 1 / this.direction.z;
+		setTextures(value) {
+			this.textures = value;
+			return this;
+		}
 
-			var origin = this.origin;
+	}
 
-			if ( invdirx >= 0 ) {
+	class LoaderUtils {
+		static decodeText(array) {
+			if (typeof TextDecoder !== 'undefined') {
+				return new TextDecoder().decode(array);
+			} // Avoid the String.fromCharCode.apply(null, array) shortcut, which
+			// throws a "maximum call stack size exceeded" error for large arrays.
 
-				tmin = ( box.min.x - origin.x ) * invdirx;
-				tmax = ( box.max.x - origin.x ) * invdirx;
 
-			} else {
+			let s = '';
 
-				tmin = ( box.max.x - origin.x ) * invdirx;
-				tmax = ( box.min.x - origin.x ) * invdirx;
+			for (let i = 0, il = array.length; i < il; i++) {
+				// Implicitly assumes little-endian.
+				s += String.fromCharCode(array[i]);
+			}
 
+			try {
+				// merges multi-byte utf-8 characters.
+				return decodeURIComponent(escape(s));
+			} catch (e) {
+				// see #16358
+				return s;
 			}
+		}
+
+		static extractUrlBase(url) {
+			const index = url.lastIndexOf('/');
+			if (index === -1) return './';
+			return url.substr(0, index + 1);
+		}
 
-			if ( invdiry >= 0 ) {
+	}
 
-				tymin = ( box.min.y - origin.y ) * invdiry;
-				tymax = ( box.max.y - origin.y ) * invdiry;
+	class InstancedBufferGeometry extends BufferGeometry {
+		constructor() {
+			super();
+			this.type = 'InstancedBufferGeometry';
+			this.instanceCount = Infinity;
+		}
 
-			} else {
+		copy(source) {
+			super.copy(source);
+			this.instanceCount = source.instanceCount;
+			return this;
+		}
 
-				tymin = ( box.max.y - origin.y ) * invdiry;
-				tymax = ( box.min.y - origin.y ) * invdiry;
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-			}
+		toJSON() {
+			const data = super.toJSON(this);
+			data.instanceCount = this.instanceCount;
+			data.isInstancedBufferGeometry = true;
+			return data;
+		}
 
-			if ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;
+	}
 
-			// These lines also handle the case where tmin or tmax is NaN
-			// (result of 0 * Infinity). x !== x returns true if x is NaN
+	InstancedBufferGeometry.prototype.isInstancedBufferGeometry = true;
 
-			if ( tymin > tmin || tmin !== tmin ) tmin = tymin;
+	class InstancedBufferAttribute extends BufferAttribute {
+		constructor(array, itemSize, normalized, meshPerAttribute = 1) {
+			if (typeof normalized === 'number') {
+				meshPerAttribute = normalized;
+				normalized = false;
+				console.error('THREE.InstancedBufferAttribute: The constructor now expects normalized as the third argument.');
+			}
 
-			if ( tymax < tmax || tmax !== tmax ) tmax = tymax;
+			super(array, itemSize, normalized);
+			this.meshPerAttribute = meshPerAttribute;
+		}
 
-			if ( invdirz >= 0 ) {
+		copy(source) {
+			super.copy(source);
+			this.meshPerAttribute = source.meshPerAttribute;
+			return this;
+		}
 
-				tzmin = ( box.min.z - origin.z ) * invdirz;
-				tzmax = ( box.max.z - origin.z ) * invdirz;
+		toJSON() {
+			const data = super.toJSON();
+			data.meshPerAttribute = this.meshPerAttribute;
+			data.isInstancedBufferAttribute = true;
+			return data;
+		}
 
-			} else {
+	}
 
-				tzmin = ( box.max.z - origin.z ) * invdirz;
-				tzmax = ( box.min.z - origin.z ) * invdirz;
+	InstancedBufferAttribute.prototype.isInstancedBufferAttribute = true;
 
-			}
+	class BufferGeometryLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
 
-			if ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;
+		load(url, onLoad, onProgress, onError) {
+			const scope = this;
+			const loader = new FileLoader(scope.manager);
+			loader.setPath(scope.path);
+			loader.setRequestHeader(scope.requestHeader);
+			loader.setWithCredentials(scope.withCredentials);
+			loader.load(url, function (text) {
+				try {
+					onLoad(scope.parse(JSON.parse(text)));
+				} catch (e) {
+					if (onError) {
+						onError(e);
+					} else {
+						console.error(e);
+					}
 
-			if ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;
+					scope.manager.itemError(url);
+				}
+			}, onProgress, onError);
+		}
 
-			if ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;
+		parse(json) {
+			const interleavedBufferMap = {};
+			const arrayBufferMap = {};
 
-			//return point closest to the ray (positive side)
+			function getInterleavedBuffer(json, uuid) {
+				if (interleavedBufferMap[uuid] !== undefined) return interleavedBufferMap[uuid];
+				const interleavedBuffers = json.interleavedBuffers;
+				const interleavedBuffer = interleavedBuffers[uuid];
+				const buffer = getArrayBuffer(json, interleavedBuffer.buffer);
+				const array = getTypedArray(interleavedBuffer.type, buffer);
+				const ib = new InterleavedBuffer(array, interleavedBuffer.stride);
+				ib.uuid = interleavedBuffer.uuid;
+				interleavedBufferMap[uuid] = ib;
+				return ib;
+			}
 
-			if ( tmax < 0 ) return null;
+			function getArrayBuffer(json, uuid) {
+				if (arrayBufferMap[uuid] !== undefined) return arrayBufferMap[uuid];
+				const arrayBuffers = json.arrayBuffers;
+				const arrayBuffer = arrayBuffers[uuid];
+				const ab = new Uint32Array(arrayBuffer).buffer;
+				arrayBufferMap[uuid] = ab;
+				return ab;
+			}
 
-			return this.at( tmin >= 0 ? tmin : tmax, target );
+			const geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();
+			const index = json.data.index;
 
-		},
+			if (index !== undefined) {
+				const typedArray = getTypedArray(index.type, index.array);
+				geometry.setIndex(new BufferAttribute(typedArray, 1));
+			}
 
-		intersectsBox: ( function () {
+			const attributes = json.data.attributes;
 
-			var v = new Vector3();
+			for (const key in attributes) {
+				const attribute = attributes[key];
+				let bufferAttribute;
 
-			return function intersectsBox( box ) {
+				if (attribute.isInterleavedBufferAttribute) {
+					const interleavedBuffer = getInterleavedBuffer(json.data, attribute.data);
+					bufferAttribute = new InterleavedBufferAttribute(interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized);
+				} else {
+					const typedArray = getTypedArray(attribute.type, attribute.array);
+					const bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;
+					bufferAttribute = new bufferAttributeConstr(typedArray, attribute.itemSize, attribute.normalized);
+				}
 
-				return this.intersectBox( box, v ) !== null;
+				if (attribute.name !== undefined) bufferAttribute.name = attribute.name;
+				if (attribute.usage !== undefined) bufferAttribute.setUsage(attribute.usage);
 
-			};
+				if (attribute.updateRange !== undefined) {
+					bufferAttribute.updateRange.offset = attribute.updateRange.offset;
+					bufferAttribute.updateRange.count = attribute.updateRange.count;
+				}
 
-		} )(),
+				geometry.setAttribute(key, bufferAttribute);
+			}
 
-		intersectTriangle: function () {
+			const morphAttributes = json.data.morphAttributes;
 
-			// Compute the offset origin, edges, and normal.
-			var diff = new Vector3();
-			var edge1 = new Vector3();
-			var edge2 = new Vector3();
-			var normal = new Vector3();
+			if (morphAttributes) {
+				for (const key in morphAttributes) {
+					const attributeArray = morphAttributes[key];
+					const array = [];
 
-			return function intersectTriangle( a, b, c, backfaceCulling, target ) {
+					for (let i = 0, il = attributeArray.length; i < il; i++) {
+						const attribute = attributeArray[i];
+						let bufferAttribute;
 
-				// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h
+						if (attribute.isInterleavedBufferAttribute) {
+							const interleavedBuffer = getInterleavedBuffer(json.data, attribute.data);
+							bufferAttribute = new InterleavedBufferAttribute(interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized);
+						} else {
+							const typedArray = getTypedArray(attribute.type, attribute.array);
+							bufferAttribute = new BufferAttribute(typedArray, attribute.itemSize, attribute.normalized);
+						}
 
-				edge1.subVectors( b, a );
-				edge2.subVectors( c, a );
-				normal.crossVectors( edge1, edge2 );
+						if (attribute.name !== undefined) bufferAttribute.name = attribute.name;
+						array.push(bufferAttribute);
+					}
 
-				// Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
-				// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
-				//   |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
-				//   |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
-				//   |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)
-				var DdN = this.direction.dot( normal );
-				var sign;
+					geometry.morphAttributes[key] = array;
+				}
+			}
 
-				if ( DdN > 0 ) {
+			const morphTargetsRelative = json.data.morphTargetsRelative;
 
-					if ( backfaceCulling ) return null;
-					sign = 1;
+			if (morphTargetsRelative) {
+				geometry.morphTargetsRelative = true;
+			}
 
-				} else if ( DdN < 0 ) {
+			const groups = json.data.groups || json.data.drawcalls || json.data.offsets;
 
-					sign = - 1;
-					DdN = - DdN;
+			if (groups !== undefined) {
+				for (let i = 0, n = groups.length; i !== n; ++i) {
+					const group = groups[i];
+					geometry.addGroup(group.start, group.count, group.materialIndex);
+				}
+			}
 
-				} else {
+			const boundingSphere = json.data.boundingSphere;
 
-					return null;
+			if (boundingSphere !== undefined) {
+				const center = new Vector3();
 
+				if (boundingSphere.center !== undefined) {
+					center.fromArray(boundingSphere.center);
 				}
 
-				diff.subVectors( this.origin, a );
-				var DdQxE2 = sign * this.direction.dot( edge2.crossVectors( diff, edge2 ) );
+				geometry.boundingSphere = new Sphere(center, boundingSphere.radius);
+			}
 
-				// b1 < 0, no intersection
-				if ( DdQxE2 < 0 ) {
+			if (json.name) geometry.name = json.name;
+			if (json.userData) geometry.userData = json.userData;
+			return geometry;
+		}
 
-					return null;
+	}
 
-				}
+	class ObjectLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
 
-				var DdE1xQ = sign * this.direction.dot( edge1.cross( diff ) );
+		load(url, onLoad, onProgress, onError) {
+			const scope = this;
+			const path = this.path === '' ? LoaderUtils.extractUrlBase(url) : this.path;
+			this.resourcePath = this.resourcePath || path;
+			const loader = new FileLoader(this.manager);
+			loader.setPath(this.path);
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(this.withCredentials);
+			loader.load(url, function (text) {
+				let json = null;
 
-				// b2 < 0, no intersection
-				if ( DdE1xQ < 0 ) {
+				try {
+					json = JSON.parse(text);
+				} catch (error) {
+					if (onError !== undefined) onError(error);
+					console.error('THREE:ObjectLoader: Can\'t parse ' + url + '.', error.message);
+					return;
+				}
 
-					return null;
+				const metadata = json.metadata;
 
+				if (metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry') {
+					console.error('THREE.ObjectLoader: Can\'t load ' + url);
+					return;
 				}
 
-				// b1+b2 > 1, no intersection
-				if ( DdQxE2 + DdE1xQ > DdN ) {
+				scope.parse(json, onLoad);
+			}, onProgress, onError);
+		}
 
-					return null;
+		async loadAsync(url, onProgress) {
+			const scope = this;
+			const path = this.path === '' ? LoaderUtils.extractUrlBase(url) : this.path;
+			this.resourcePath = this.resourcePath || path;
+			const loader = new FileLoader(this.manager);
+			loader.setPath(this.path);
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(this.withCredentials);
+			const text = await loader.loadAsync(url, onProgress);
+			const json = JSON.parse(text);
+			const metadata = json.metadata;
 
-				}
+			if (metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry') {
+				throw new Error('THREE.ObjectLoader: Can\'t load ' + url);
+			}
 
-				// Line intersects triangle, check if ray does.
-				var QdN = - sign * diff.dot( normal );
+			return await scope.parseAsync(json);
+		}
 
-				// t < 0, no intersection
-				if ( QdN < 0 ) {
+		parse(json, onLoad) {
+			const animations = this.parseAnimations(json.animations);
+			const shapes = this.parseShapes(json.shapes);
+			const geometries = this.parseGeometries(json.geometries, shapes);
+			const images = this.parseImages(json.images, function () {
+				if (onLoad !== undefined) onLoad(object);
+			});
+			const textures = this.parseTextures(json.textures, images);
+			const materials = this.parseMaterials(json.materials, textures);
+			const object = this.parseObject(json.object, geometries, materials, textures, animations);
+			const skeletons = this.parseSkeletons(json.skeletons, object);
+			this.bindSkeletons(object, skeletons); //
 
-					return null;
+			if (onLoad !== undefined) {
+				let hasImages = false;
 
+				for (const uuid in images) {
+					if (images[uuid] instanceof HTMLImageElement) {
+						hasImages = true;
+						break;
+					}
 				}
 
-				// Ray intersects triangle.
-				return this.at( QdN / DdN, target );
+				if (hasImages === false) onLoad(object);
+			}
 
-			};
+			return object;
+		}
 
-		}(),
+		async parseAsync(json) {
+			const animations = this.parseAnimations(json.animations);
+			const shapes = this.parseShapes(json.shapes);
+			const geometries = this.parseGeometries(json.geometries, shapes);
+			const images = await this.parseImagesAsync(json.images);
+			const textures = this.parseTextures(json.textures, images);
+			const materials = this.parseMaterials(json.materials, textures);
+			const object = this.parseObject(json.object, geometries, materials, textures, animations);
+			const skeletons = this.parseSkeletons(json.skeletons, object);
+			this.bindSkeletons(object, skeletons);
+			return object;
+		}
 
-		applyMatrix4: function ( matrix4 ) {
+		parseShapes(json) {
+			const shapes = {};
 
-			this.origin.applyMatrix4( matrix4 );
-			this.direction.transformDirection( matrix4 );
+			if (json !== undefined) {
+				for (let i = 0, l = json.length; i < l; i++) {
+					const shape = new Shape().fromJSON(json[i]);
+					shapes[shape.uuid] = shape;
+				}
+			}
 
-			return this;
+			return shapes;
+		}
 
-		},
+		parseSkeletons(json, object) {
+			const skeletons = {};
+			const bones = {}; // generate bone lookup table
 
-		equals: function ( ray ) {
+			object.traverse(function (child) {
+				if (child.isBone) bones[child.uuid] = child;
+			}); // create skeletons
 
-			return ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );
+			if (json !== undefined) {
+				for (let i = 0, l = json.length; i < l; i++) {
+					const skeleton = new Skeleton().fromJSON(json[i], bones);
+					skeletons[skeleton.uuid] = skeleton;
+				}
+			}
 
+			return skeletons;
 		}
 
-	} );
-
-	/**
-	 * @author bhouston / http://clara.io
-	 */
-
-	function Line3( start, end ) {
+		parseGeometries(json, shapes) {
+			const geometries = {};
 
-		this.start = ( start !== undefined ) ? start : new Vector3();
-		this.end = ( end !== undefined ) ? end : new Vector3();
+			if (json !== undefined) {
+				const bufferGeometryLoader = new BufferGeometryLoader();
 
-	}
+				for (let i = 0, l = json.length; i < l; i++) {
+					let geometry;
+					const data = json[i];
 
-	Object.assign( Line3.prototype, {
+					switch (data.type) {
+						case 'BufferGeometry':
+						case 'InstancedBufferGeometry':
+							geometry = bufferGeometryLoader.parse(data);
+							break;
 
-		set: function ( start, end ) {
+						case 'Geometry':
+							console.error('THREE.ObjectLoader: The legacy Geometry type is no longer supported.');
+							break;
 
-			this.start.copy( start );
-			this.end.copy( end );
+						default:
+							if (data.type in Geometries) {
+								geometry = Geometries[data.type].fromJSON(data, shapes);
+							} else {
+								console.warn(`THREE.ObjectLoader: Unsupported geometry type "${data.type}"`);
+							}
 
-			return this;
+					}
 
-		},
+					geometry.uuid = data.uuid;
+					if (data.name !== undefined) geometry.name = data.name;
+					if (geometry.isBufferGeometry === true && data.userData !== undefined) geometry.userData = data.userData;
+					geometries[data.uuid] = geometry;
+				}
+			}
 
-		clone: function () {
+			return geometries;
+		}
 
-			return new this.constructor().copy( this );
+		parseMaterials(json, textures) {
+			const cache = {}; // MultiMaterial
 
-		},
+			const materials = {};
 
-		copy: function ( line ) {
+			if (json !== undefined) {
+				const loader = new MaterialLoader();
+				loader.setTextures(textures);
 
-			this.start.copy( line.start );
-			this.end.copy( line.end );
+				for (let i = 0, l = json.length; i < l; i++) {
+					const data = json[i];
 
-			return this;
+					if (data.type === 'MultiMaterial') {
+						// Deprecated
+						const array = [];
 
-		},
+						for (let j = 0; j < data.materials.length; j++) {
+							const material = data.materials[j];
 
-		getCenter: function ( target ) {
+							if (cache[material.uuid] === undefined) {
+								cache[material.uuid] = loader.parse(material);
+							}
 
-			if ( target === undefined ) {
+							array.push(cache[material.uuid]);
+						}
 
-				console.warn( 'THREE.Line3: .getCenter() target is now required' );
-				target = new Vector3();
+						materials[data.uuid] = array;
+					} else {
+						if (cache[data.uuid] === undefined) {
+							cache[data.uuid] = loader.parse(data);
+						}
 
+						materials[data.uuid] = cache[data.uuid];
+					}
+				}
 			}
 
-			return target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );
+			return materials;
+		}
 
-		},
+		parseAnimations(json) {
+			const animations = {};
 
-		delta: function ( target ) {
+			if (json !== undefined) {
+				for (let i = 0; i < json.length; i++) {
+					const data = json[i];
+					const clip = AnimationClip.parse(data);
+					animations[clip.uuid] = clip;
+				}
+			}
 
-			if ( target === undefined ) {
+			return animations;
+		}
 
-				console.warn( 'THREE.Line3: .delta() target is now required' );
-				target = new Vector3();
+		parseImages(json, onLoad) {
+			const scope = this;
+			const images = {};
+			let loader;
 
+			function loadImage(url) {
+				scope.manager.itemStart(url);
+				return loader.load(url, function () {
+					scope.manager.itemEnd(url);
+				}, undefined, function () {
+					scope.manager.itemError(url);
+					scope.manager.itemEnd(url);
+				});
 			}
 
-			return target.subVectors( this.end, this.start );
+			function deserializeImage(image) {
+				if (typeof image === 'string') {
+					const url = image;
+					const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test(url) ? url : scope.resourcePath + url;
+					return loadImage(path);
+				} else {
+					if (image.data) {
+						return {
+							data: getTypedArray(image.type, image.data),
+							width: image.width,
+							height: image.height
+						};
+					} else {
+						return null;
+					}
+				}
+			}
 
-		},
+			if (json !== undefined && json.length > 0) {
+				const manager = new LoadingManager(onLoad);
+				loader = new ImageLoader(manager);
+				loader.setCrossOrigin(this.crossOrigin);
 
-		distanceSq: function () {
+				for (let i = 0, il = json.length; i < il; i++) {
+					const image = json[i];
+					const url = image.url;
 
-			return this.start.distanceToSquared( this.end );
+					if (Array.isArray(url)) {
+						// load array of images e.g CubeTexture
+						images[image.uuid] = [];
 
-		},
+						for (let j = 0, jl = url.length; j < jl; j++) {
+							const currentUrl = url[j];
+							const deserializedImage = deserializeImage(currentUrl);
 
-		distance: function () {
+							if (deserializedImage !== null) {
+								if (deserializedImage instanceof HTMLImageElement) {
+									images[image.uuid].push(deserializedImage);
+								} else {
+									// special case: handle array of data textures for cube textures
+									images[image.uuid].push(new DataTexture(deserializedImage.data, deserializedImage.width, deserializedImage.height));
+								}
+							}
+						}
+					} else {
+						// load single image
+						const deserializedImage = deserializeImage(image.url);
 
-			return this.start.distanceTo( this.end );
+						if (deserializedImage !== null) {
+							images[image.uuid] = deserializedImage;
+						}
+					}
+				}
+			}
 
-		},
+			return images;
+		}
 
-		at: function ( t, target ) {
+		async parseImagesAsync(json) {
+			const scope = this;
+			const images = {};
+			let loader;
 
-			if ( target === undefined ) {
+			async function deserializeImage(image) {
+				if (typeof image === 'string') {
+					const url = image;
+					const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test(url) ? url : scope.resourcePath + url;
+					return await loader.loadAsync(path);
+				} else {
+					if (image.data) {
+						return {
+							data: getTypedArray(image.type, image.data),
+							width: image.width,
+							height: image.height
+						};
+					} else {
+						return null;
+					}
+				}
+			}
 
-				console.warn( 'THREE.Line3: .at() target is now required' );
-				target = new Vector3();
+			if (json !== undefined && json.length > 0) {
+				loader = new ImageLoader(this.manager);
+				loader.setCrossOrigin(this.crossOrigin);
 
-			}
+				for (let i = 0, il = json.length; i < il; i++) {
+					const image = json[i];
+					const url = image.url;
 
-			return this.delta( target ).multiplyScalar( t ).add( this.start );
+					if (Array.isArray(url)) {
+						// load array of images e.g CubeTexture
+						images[image.uuid] = [];
 
-		},
+						for (let j = 0, jl = url.length; j < jl; j++) {
+							const currentUrl = url[j];
+							const deserializedImage = await deserializeImage(currentUrl);
 
-		closestPointToPointParameter: function () {
+							if (deserializedImage !== null) {
+								if (deserializedImage instanceof HTMLImageElement) {
+									images[image.uuid].push(deserializedImage);
+								} else {
+									// special case: handle array of data textures for cube textures
+									images[image.uuid].push(new DataTexture(deserializedImage.data, deserializedImage.width, deserializedImage.height));
+								}
+							}
+						}
+					} else {
+						// load single image
+						const deserializedImage = await deserializeImage(image.url);
 
-			var startP = new Vector3();
-			var startEnd = new Vector3();
+						if (deserializedImage !== null) {
+							images[image.uuid] = deserializedImage;
+						}
+					}
+				}
+			}
 
-			return function closestPointToPointParameter( point, clampToLine ) {
+			return images;
+		}
 
-				startP.subVectors( point, this.start );
-				startEnd.subVectors( this.end, this.start );
+		parseTextures(json, images) {
+			function parseConstant(value, type) {
+				if (typeof value === 'number') return value;
+				console.warn('THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value);
+				return type[value];
+			}
 
-				var startEnd2 = startEnd.dot( startEnd );
-				var startEnd_startP = startEnd.dot( startP );
+			const textures = {};
 
-				var t = startEnd_startP / startEnd2;
+			if (json !== undefined) {
+				for (let i = 0, l = json.length; i < l; i++) {
+					const data = json[i];
 
-				if ( clampToLine ) {
+					if (data.image === undefined) {
+						console.warn('THREE.ObjectLoader: No "image" specified for', data.uuid);
+					}
 
-					t = _Math.clamp( t, 0, 1 );
+					if (images[data.image] === undefined) {
+						console.warn('THREE.ObjectLoader: Undefined image', data.image);
+					}
 
-				}
+					let texture;
+					const image = images[data.image];
 
-				return t;
+					if (Array.isArray(image)) {
+						texture = new CubeTexture(image);
+						if (image.length === 6) texture.needsUpdate = true;
+					} else {
+						if (image && image.data) {
+							texture = new DataTexture(image.data, image.width, image.height);
+						} else {
+							texture = new Texture(image);
+						}
 
-			};
+						if (image) texture.needsUpdate = true; // textures can have undefined image data
+					}
 
-		}(),
+					texture.uuid = data.uuid;
+					if (data.name !== undefined) texture.name = data.name;
+					if (data.mapping !== undefined) texture.mapping = parseConstant(data.mapping, TEXTURE_MAPPING);
+					if (data.offset !== undefined) texture.offset.fromArray(data.offset);
+					if (data.repeat !== undefined) texture.repeat.fromArray(data.repeat);
+					if (data.center !== undefined) texture.center.fromArray(data.center);
+					if (data.rotation !== undefined) texture.rotation = data.rotation;
+
+					if (data.wrap !== undefined) {
+						texture.wrapS = parseConstant(data.wrap[0], TEXTURE_WRAPPING);
+						texture.wrapT = parseConstant(data.wrap[1], TEXTURE_WRAPPING);
+					}
 
-		closestPointToPoint: function ( point, clampToLine, target ) {
+					if (data.format !== undefined) texture.format = data.format;
+					if (data.type !== undefined) texture.type = data.type;
+					if (data.encoding !== undefined) texture.encoding = data.encoding;
+					if (data.minFilter !== undefined) texture.minFilter = parseConstant(data.minFilter, TEXTURE_FILTER);
+					if (data.magFilter !== undefined) texture.magFilter = parseConstant(data.magFilter, TEXTURE_FILTER);
+					if (data.anisotropy !== undefined) texture.anisotropy = data.anisotropy;
+					if (data.flipY !== undefined) texture.flipY = data.flipY;
+					if (data.premultiplyAlpha !== undefined) texture.premultiplyAlpha = data.premultiplyAlpha;
+					if (data.unpackAlignment !== undefined) texture.unpackAlignment = data.unpackAlignment;
+					textures[data.uuid] = texture;
+				}
+			}
 
-			var t = this.closestPointToPointParameter( point, clampToLine );
+			return textures;
+		}
 
-			if ( target === undefined ) {
+		parseObject(data, geometries, materials, textures, animations) {
+			let object;
 
-				console.warn( 'THREE.Line3: .closestPointToPoint() target is now required' );
-				target = new Vector3();
+			function getGeometry(name) {
+				if (geometries[name] === undefined) {
+					console.warn('THREE.ObjectLoader: Undefined geometry', name);
+				}
 
+				return geometries[name];
 			}
 
-			return this.delta( target ).multiplyScalar( t ).add( this.start );
+			function getMaterial(name) {
+				if (name === undefined) return undefined;
 
-		},
+				if (Array.isArray(name)) {
+					const array = [];
 
-		applyMatrix4: function ( matrix ) {
+					for (let i = 0, l = name.length; i < l; i++) {
+						const uuid = name[i];
 
-			this.start.applyMatrix4( matrix );
-			this.end.applyMatrix4( matrix );
+						if (materials[uuid] === undefined) {
+							console.warn('THREE.ObjectLoader: Undefined material', uuid);
+						}
 
-			return this;
+						array.push(materials[uuid]);
+					}
 
-		},
+					return array;
+				}
+
+				if (materials[name] === undefined) {
+					console.warn('THREE.ObjectLoader: Undefined material', name);
+				}
 
-		equals: function ( line ) {
+				return materials[name];
+			}
 
-			return line.start.equals( this.start ) && line.end.equals( this.end );
+			function getTexture(uuid) {
+				if (textures[uuid] === undefined) {
+					console.warn('THREE.ObjectLoader: Undefined texture', uuid);
+				}
 
-		}
+				return textures[uuid];
+			}
 
-	} );
+			let geometry, material;
 
-	/**
-	 * @author bhouston / http://clara.io
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+			switch (data.type) {
+				case 'Scene':
+					object = new Scene();
 
-	function Triangle( a, b, c ) {
+					if (data.background !== undefined) {
+						if (Number.isInteger(data.background)) {
+							object.background = new Color(data.background);
+						} else {
+							object.background = getTexture(data.background);
+						}
+					}
 
-		this.a = ( a !== undefined ) ? a : new Vector3();
-		this.b = ( b !== undefined ) ? b : new Vector3();
-		this.c = ( c !== undefined ) ? c : new Vector3();
+					if (data.environment !== undefined) object.environment = getTexture(data.environment);
 
-	}
+					if (data.fog !== undefined) {
+						if (data.fog.type === 'Fog') {
+							object.fog = new Fog(data.fog.color, data.fog.near, data.fog.far);
+						} else if (data.fog.type === 'FogExp2') {
+							object.fog = new FogExp2(data.fog.color, data.fog.density);
+						}
+					}
 
-	Object.assign( Triangle, {
+					break;
 
-		getNormal: function () {
+				case 'PerspectiveCamera':
+					object = new PerspectiveCamera(data.fov, data.aspect, data.near, data.far);
+					if (data.focus !== undefined) object.focus = data.focus;
+					if (data.zoom !== undefined) object.zoom = data.zoom;
+					if (data.filmGauge !== undefined) object.filmGauge = data.filmGauge;
+					if (data.filmOffset !== undefined) object.filmOffset = data.filmOffset;
+					if (data.view !== undefined) object.view = Object.assign({}, data.view);
+					break;
 
-			var v0 = new Vector3();
+				case 'OrthographicCamera':
+					object = new OrthographicCamera(data.left, data.right, data.top, data.bottom, data.near, data.far);
+					if (data.zoom !== undefined) object.zoom = data.zoom;
+					if (data.view !== undefined) object.view = Object.assign({}, data.view);
+					break;
 
-			return function getNormal( a, b, c, target ) {
+				case 'AmbientLight':
+					object = new AmbientLight(data.color, data.intensity);
+					break;
 
-				if ( target === undefined ) {
+				case 'DirectionalLight':
+					object = new DirectionalLight(data.color, data.intensity);
+					break;
 
-					console.warn( 'THREE.Triangle: .getNormal() target is now required' );
-					target = new Vector3();
+				case 'PointLight':
+					object = new PointLight(data.color, data.intensity, data.distance, data.decay);
+					break;
 
-				}
+				case 'RectAreaLight':
+					object = new RectAreaLight(data.color, data.intensity, data.width, data.height);
+					break;
 
-				target.subVectors( c, b );
-				v0.subVectors( a, b );
-				target.cross( v0 );
+				case 'SpotLight':
+					object = new SpotLight(data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay);
+					break;
 
-				var targetLengthSq = target.lengthSq();
-				if ( targetLengthSq > 0 ) {
+				case 'HemisphereLight':
+					object = new HemisphereLight(data.color, data.groundColor, data.intensity);
+					break;
 
-					return target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );
+				case 'LightProbe':
+					object = new LightProbe().fromJSON(data);
+					break;
 
-				}
+				case 'SkinnedMesh':
+					geometry = getGeometry(data.geometry);
+					material = getMaterial(data.material);
+					object = new SkinnedMesh(geometry, material);
+					if (data.bindMode !== undefined) object.bindMode = data.bindMode;
+					if (data.bindMatrix !== undefined) object.bindMatrix.fromArray(data.bindMatrix);
+					if (data.skeleton !== undefined) object.skeleton = data.skeleton;
+					break;
 
-				return target.set( 0, 0, 0 );
+				case 'Mesh':
+					geometry = getGeometry(data.geometry);
+					material = getMaterial(data.material);
+					object = new Mesh(geometry, material);
+					break;
 
-			};
+				case 'InstancedMesh':
+					geometry = getGeometry(data.geometry);
+					material = getMaterial(data.material);
+					const count = data.count;
+					const instanceMatrix = data.instanceMatrix;
+					const instanceColor = data.instanceColor;
+					object = new InstancedMesh(geometry, material, count);
+					object.instanceMatrix = new BufferAttribute(new Float32Array(instanceMatrix.array), 16);
+					if (instanceColor !== undefined) object.instanceColor = new BufferAttribute(new Float32Array(instanceColor.array), instanceColor.itemSize);
+					break;
 
-		}(),
+				case 'LOD':
+					object = new LOD();
+					break;
 
-		// static/instance method to calculate barycentric coordinates
-		// based on: http://www.blackpawn.com/texts/pointinpoly/default.html
-		getBarycoord: function () {
+				case 'Line':
+					object = new Line(getGeometry(data.geometry), getMaterial(data.material));
+					break;
 
-			var v0 = new Vector3();
-			var v1 = new Vector3();
-			var v2 = new Vector3();
+				case 'LineLoop':
+					object = new LineLoop(getGeometry(data.geometry), getMaterial(data.material));
+					break;
 
-			return function getBarycoord( point, a, b, c, target ) {
+				case 'LineSegments':
+					object = new LineSegments(getGeometry(data.geometry), getMaterial(data.material));
+					break;
 
-				v0.subVectors( c, a );
-				v1.subVectors( b, a );
-				v2.subVectors( point, a );
+				case 'PointCloud':
+				case 'Points':
+					object = new Points(getGeometry(data.geometry), getMaterial(data.material));
+					break;
 
-				var dot00 = v0.dot( v0 );
-				var dot01 = v0.dot( v1 );
-				var dot02 = v0.dot( v2 );
-				var dot11 = v1.dot( v1 );
-				var dot12 = v1.dot( v2 );
+				case 'Sprite':
+					object = new Sprite(getMaterial(data.material));
+					break;
 
-				var denom = ( dot00 * dot11 - dot01 * dot01 );
+				case 'Group':
+					object = new Group();
+					break;
 
-				if ( target === undefined ) {
+				case 'Bone':
+					object = new Bone();
+					break;
 
-					console.warn( 'THREE.Triangle: .getBarycoord() target is now required' );
-					target = new Vector3();
+				default:
+					object = new Object3D();
+			}
 
-				}
+			object.uuid = data.uuid;
+			if (data.name !== undefined) object.name = data.name;
 
-				// collinear or singular triangle
-				if ( denom === 0 ) {
+			if (data.matrix !== undefined) {
+				object.matrix.fromArray(data.matrix);
+				if (data.matrixAutoUpdate !== undefined) object.matrixAutoUpdate = data.matrixAutoUpdate;
+				if (object.matrixAutoUpdate) object.matrix.decompose(object.position, object.quaternion, object.scale);
+			} else {
+				if (data.position !== undefined) object.position.fromArray(data.position);
+				if (data.rotation !== undefined) object.rotation.fromArray(data.rotation);
+				if (data.quaternion !== undefined) object.quaternion.fromArray(data.quaternion);
+				if (data.scale !== undefined) object.scale.fromArray(data.scale);
+			}
 
-					// arbitrary location outside of triangle?
-					// not sure if this is the best idea, maybe should be returning undefined
-					return target.set( - 2, - 1, - 1 );
+			if (data.castShadow !== undefined) object.castShadow = data.castShadow;
+			if (data.receiveShadow !== undefined) object.receiveShadow = data.receiveShadow;
 
-				}
+			if (data.shadow) {
+				if (data.shadow.bias !== undefined) object.shadow.bias = data.shadow.bias;
+				if (data.shadow.normalBias !== undefined) object.shadow.normalBias = data.shadow.normalBias;
+				if (data.shadow.radius !== undefined) object.shadow.radius = data.shadow.radius;
+				if (data.shadow.mapSize !== undefined) object.shadow.mapSize.fromArray(data.shadow.mapSize);
+				if (data.shadow.camera !== undefined) object.shadow.camera = this.parseObject(data.shadow.camera);
+			}
 
-				var invDenom = 1 / denom;
-				var u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;
-				var v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;
+			if (data.visible !== undefined) object.visible = data.visible;
+			if (data.frustumCulled !== undefined) object.frustumCulled = data.frustumCulled;
+			if (data.renderOrder !== undefined) object.renderOrder = data.renderOrder;
+			if (data.userData !== undefined) object.userData = data.userData;
+			if (data.layers !== undefined) object.layers.mask = data.layers;
 
-				// barycentric coordinates must always sum to 1
-				return target.set( 1 - u - v, v, u );
+			if (data.children !== undefined) {
+				const children = data.children;
 
-			};
+				for (let i = 0; i < children.length; i++) {
+					object.add(this.parseObject(children[i], geometries, materials, textures, animations));
+				}
+			}
 
-		}(),
+			if (data.animations !== undefined) {
+				const objectAnimations = data.animations;
 
-		containsPoint: function () {
+				for (let i = 0; i < objectAnimations.length; i++) {
+					const uuid = objectAnimations[i];
+					object.animations.push(animations[uuid]);
+				}
+			}
 
-			var v1 = new Vector3();
+			if (data.type === 'LOD') {
+				if (data.autoUpdate !== undefined) object.autoUpdate = data.autoUpdate;
+				const levels = data.levels;
 
-			return function containsPoint( point, a, b, c ) {
+				for (let l = 0; l < levels.length; l++) {
+					const level = levels[l];
+					const child = object.getObjectByProperty('uuid', level.object);
 
-				Triangle.getBarycoord( point, a, b, c, v1 );
+					if (child !== undefined) {
+						object.addLevel(child, level.distance);
+					}
+				}
+			}
 
-				return ( v1.x >= 0 ) && ( v1.y >= 0 ) && ( ( v1.x + v1.y ) <= 1 );
+			return object;
+		}
 
-			};
+		bindSkeletons(object, skeletons) {
+			if (Object.keys(skeletons).length === 0) return;
+			object.traverse(function (child) {
+				if (child.isSkinnedMesh === true && child.skeleton !== undefined) {
+					const skeleton = skeletons[child.skeleton];
 
-		}()
+					if (skeleton === undefined) {
+						console.warn('THREE.ObjectLoader: No skeleton found with UUID:', child.skeleton);
+					} else {
+						child.bind(skeleton, child.bindMatrix);
+					}
+				}
+			});
+		}
+		/* DEPRECATED */
 
-	} );
 
-	Object.assign( Triangle.prototype, {
+		setTexturePath(value) {
+			console.warn('THREE.ObjectLoader: .setTexturePath() has been renamed to .setResourcePath().');
+			return this.setResourcePath(value);
+		}
 
-		set: function ( a, b, c ) {
+	}
 
-			this.a.copy( a );
-			this.b.copy( b );
-			this.c.copy( c );
+	const TEXTURE_MAPPING = {
+		UVMapping: UVMapping,
+		CubeReflectionMapping: CubeReflectionMapping,
+		CubeRefractionMapping: CubeRefractionMapping,
+		EquirectangularReflectionMapping: EquirectangularReflectionMapping,
+		EquirectangularRefractionMapping: EquirectangularRefractionMapping,
+		CubeUVReflectionMapping: CubeUVReflectionMapping,
+		CubeUVRefractionMapping: CubeUVRefractionMapping
+	};
+	const TEXTURE_WRAPPING = {
+		RepeatWrapping: RepeatWrapping,
+		ClampToEdgeWrapping: ClampToEdgeWrapping,
+		MirroredRepeatWrapping: MirroredRepeatWrapping
+	};
+	const TEXTURE_FILTER = {
+		NearestFilter: NearestFilter,
+		NearestMipmapNearestFilter: NearestMipmapNearestFilter,
+		NearestMipmapLinearFilter: NearestMipmapLinearFilter,
+		LinearFilter: LinearFilter,
+		LinearMipmapNearestFilter: LinearMipmapNearestFilter,
+		LinearMipmapLinearFilter: LinearMipmapLinearFilter
+	};
 
-			return this;
+	class ImageBitmapLoader extends Loader {
+		constructor(manager) {
+			super(manager);
 
-		},
+			if (typeof createImageBitmap === 'undefined') {
+				console.warn('THREE.ImageBitmapLoader: createImageBitmap() not supported.');
+			}
 
-		setFromPointsAndIndices: function ( points, i0, i1, i2 ) {
+			if (typeof fetch === 'undefined') {
+				console.warn('THREE.ImageBitmapLoader: fetch() not supported.');
+			}
 
-			this.a.copy( points[ i0 ] );
-			this.b.copy( points[ i1 ] );
-			this.c.copy( points[ i2 ] );
+			this.options = {
+				premultiplyAlpha: 'none'
+			};
+		}
 
+		setOptions(options) {
+			this.options = options;
 			return this;
+		}
 
-		},
+		load(url, onLoad, onProgress, onError) {
+			if (url === undefined) url = '';
+			if (this.path !== undefined) url = this.path + url;
+			url = this.manager.resolveURL(url);
+			const scope = this;
+			const cached = Cache.get(url);
 
-		clone: function () {
+			if (cached !== undefined) {
+				scope.manager.itemStart(url);
+				setTimeout(function () {
+					if (onLoad) onLoad(cached);
+					scope.manager.itemEnd(url);
+				}, 0);
+				return cached;
+			}
 
-			return new this.constructor().copy( this );
+			const fetchOptions = {};
+			fetchOptions.credentials = this.crossOrigin === 'anonymous' ? 'same-origin' : 'include';
+			fetchOptions.headers = this.requestHeader;
+			fetch(url, fetchOptions).then(function (res) {
+				return res.blob();
+			}).then(function (blob) {
+				return createImageBitmap(blob, Object.assign(scope.options, {
+					colorSpaceConversion: 'none'
+				}));
+			}).then(function (imageBitmap) {
+				Cache.add(url, imageBitmap);
+				if (onLoad) onLoad(imageBitmap);
+				scope.manager.itemEnd(url);
+			}).catch(function (e) {
+				if (onError) onError(e);
+				scope.manager.itemError(url);
+				scope.manager.itemEnd(url);
+			});
+			scope.manager.itemStart(url);
+		}
 
-		},
+	}
 
-		copy: function ( triangle ) {
+	ImageBitmapLoader.prototype.isImageBitmapLoader = true;
 
-			this.a.copy( triangle.a );
-			this.b.copy( triangle.b );
-			this.c.copy( triangle.c );
+	class ShapePath {
+		constructor() {
+			this.type = 'ShapePath';
+			this.color = new Color();
+			this.subPaths = [];
+			this.currentPath = null;
+		}
 
+		moveTo(x, y) {
+			this.currentPath = new Path();
+			this.subPaths.push(this.currentPath);
+			this.currentPath.moveTo(x, y);
 			return this;
+		}
 
-		},
-
-		getArea: function () {
-
-			var v0 = new Vector3();
-			var v1 = new Vector3();
-
-			return function getArea() {
+		lineTo(x, y) {
+			this.currentPath.lineTo(x, y);
+			return this;
+		}
 
-				v0.subVectors( this.c, this.b );
-				v1.subVectors( this.a, this.b );
+		quadraticCurveTo(aCPx, aCPy, aX, aY) {
+			this.currentPath.quadraticCurveTo(aCPx, aCPy, aX, aY);
+			return this;
+		}
 
-				return v0.cross( v1 ).length() * 0.5;
+		bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY) {
+			this.currentPath.bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY);
+			return this;
+		}
 
-			};
+		splineThru(pts) {
+			this.currentPath.splineThru(pts);
+			return this;
+		}
 
-		}(),
+		toShapes(isCCW, noHoles) {
+			function toShapesNoHoles(inSubpaths) {
+				const shapes = [];
 
-		getMidpoint: function ( target ) {
+				for (let i = 0, l = inSubpaths.length; i < l; i++) {
+					const tmpPath = inSubpaths[i];
+					const tmpShape = new Shape();
+					tmpShape.curves = tmpPath.curves;
+					shapes.push(tmpShape);
+				}
 
-			if ( target === undefined ) {
+				return shapes;
+			}
 
-				console.warn( 'THREE.Triangle: .getMidpoint() target is now required' );
-				target = new Vector3();
+			function isPointInsidePolygon(inPt, inPolygon) {
+				const polyLen = inPolygon.length; // inPt on polygon contour => immediate success		or
+				// toggling of inside/outside at every single! intersection point of an edge
+				//	with the horizontal line through inPt, left of inPt
+				//	not counting lowerY endpoints of edges and whole edges on that line
 
-			}
+				let inside = false;
 
-			return target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );
+				for (let p = polyLen - 1, q = 0; q < polyLen; p = q++) {
+					let edgeLowPt = inPolygon[p];
+					let edgeHighPt = inPolygon[q];
+					let edgeDx = edgeHighPt.x - edgeLowPt.x;
+					let edgeDy = edgeHighPt.y - edgeLowPt.y;
 
-		},
+					if (Math.abs(edgeDy) > Number.EPSILON) {
+						// not parallel
+						if (edgeDy < 0) {
+							edgeLowPt = inPolygon[q];
+							edgeDx = -edgeDx;
+							edgeHighPt = inPolygon[p];
+							edgeDy = -edgeDy;
+						}
 
-		getNormal: function ( target ) {
+						if (inPt.y < edgeLowPt.y || inPt.y > edgeHighPt.y) continue;
 
-			return Triangle.getNormal( this.a, this.b, this.c, target );
+						if (inPt.y === edgeLowPt.y) {
+							if (inPt.x === edgeLowPt.x) return true; // inPt is on contour ?
+							// continue;				// no intersection or edgeLowPt => doesn't count !!!
+						} else {
+							const perpEdge = edgeDy * (inPt.x - edgeLowPt.x) - edgeDx * (inPt.y - edgeLowPt.y);
+							if (perpEdge === 0) return true; // inPt is on contour ?
 
-		},
+							if (perpEdge < 0) continue;
+							inside = !inside; // true intersection left of inPt
+						}
+					} else {
+						// parallel or collinear
+						if (inPt.y !== edgeLowPt.y) continue; // parallel
+						// edge lies on the same horizontal line as inPt
 
-		getPlane: function ( target ) {
+						if (edgeHighPt.x <= inPt.x && inPt.x <= edgeLowPt.x || edgeLowPt.x <= inPt.x && inPt.x <= edgeHighPt.x) return true; // inPt: Point on contour !
+						// continue;
+					}
+				}
 
-			if ( target === undefined ) {
+				return inside;
+			}
 
-				console.warn( 'THREE.Triangle: .getPlane() target is now required' );
-				target = new Vector3();
+			const isClockWise = ShapeUtils.isClockWise;
+			const subPaths = this.subPaths;
+			if (subPaths.length === 0) return [];
+			if (noHoles === true) return toShapesNoHoles(subPaths);
+			let solid, tmpPath, tmpShape;
+			const shapes = [];
 
+			if (subPaths.length === 1) {
+				tmpPath = subPaths[0];
+				tmpShape = new Shape();
+				tmpShape.curves = tmpPath.curves;
+				shapes.push(tmpShape);
+				return shapes;
 			}
 
-			return target.setFromCoplanarPoints( this.a, this.b, this.c );
+			let holesFirst = !isClockWise(subPaths[0].getPoints());
+			holesFirst = isCCW ? !holesFirst : holesFirst; // console.log("Holes first", holesFirst);
 
-		},
+			const betterShapeHoles = [];
+			const newShapes = [];
+			let newShapeHoles = [];
+			let mainIdx = 0;
+			let tmpPoints;
+			newShapes[mainIdx] = undefined;
+			newShapeHoles[mainIdx] = [];
 
-		getBarycoord: function ( point, target ) {
+			for (let i = 0, l = subPaths.length; i < l; i++) {
+				tmpPath = subPaths[i];
+				tmpPoints = tmpPath.getPoints();
+				solid = isClockWise(tmpPoints);
+				solid = isCCW ? !solid : solid;
+
+				if (solid) {
+					if (!holesFirst && newShapes[mainIdx]) mainIdx++;
+					newShapes[mainIdx] = {
+						s: new Shape(),
+						p: tmpPoints
+					};
+					newShapes[mainIdx].s.curves = tmpPath.curves;
+					if (holesFirst) mainIdx++;
+					newShapeHoles[mainIdx] = []; //console.log('cw', i);
+				} else {
+					newShapeHoles[mainIdx].push({
+						h: tmpPath,
+						p: tmpPoints[0]
+					}); //console.log('ccw', i);
+				}
+			} // only Holes? -> probably all Shapes with wrong orientation
 
-			return Triangle.getBarycoord( point, this.a, this.b, this.c, target );
 
-		},
+			if (!newShapes[0]) return toShapesNoHoles(subPaths);
 
-		containsPoint: function ( point ) {
+			if (newShapes.length > 1) {
+				let ambiguous = false;
+				const toChange = [];
 
-			return Triangle.containsPoint( point, this.a, this.b, this.c );
+				for (let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx++) {
+					betterShapeHoles[sIdx] = [];
+				}
 
-		},
+				for (let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx++) {
+					const sho = newShapeHoles[sIdx];
 
-		intersectsBox: function ( box ) {
+					for (let hIdx = 0; hIdx < sho.length; hIdx++) {
+						const ho = sho[hIdx];
+						let hole_unassigned = true;
 
-			return box.intersectsTriangle( this );
+						for (let s2Idx = 0; s2Idx < newShapes.length; s2Idx++) {
+							if (isPointInsidePolygon(ho.p, newShapes[s2Idx].p)) {
+								if (sIdx !== s2Idx) toChange.push({
+									froms: sIdx,
+									tos: s2Idx,
+									hole: hIdx
+								});
 
-		},
+								if (hole_unassigned) {
+									hole_unassigned = false;
+									betterShapeHoles[s2Idx].push(ho);
+								} else {
+									ambiguous = true;
+								}
+							}
+						}
 
-		closestPointToPoint: function () {
+						if (hole_unassigned) {
+							betterShapeHoles[sIdx].push(ho);
+						}
+					}
+				} // console.log("ambiguous: ", ambiguous);
 
-			var plane = new Plane();
-			var edgeList = [ new Line3(), new Line3(), new Line3() ];
-			var projectedPoint = new Vector3();
-			var closestPoint = new Vector3();
 
-			return function closestPointToPoint( point, target ) {
+				if (toChange.length > 0) {
+					// console.log("to change: ", toChange);
+					if (!ambiguous) newShapeHoles = betterShapeHoles;
+				}
+			}
 
-				if ( target === undefined ) {
+			let tmpHoles;
 
-					console.warn( 'THREE.Triangle: .closestPointToPoint() target is now required' );
-					target = new Vector3();
+			for (let i = 0, il = newShapes.length; i < il; i++) {
+				tmpShape = newShapes[i].s;
+				shapes.push(tmpShape);
+				tmpHoles = newShapeHoles[i];
 
+				for (let j = 0, jl = tmpHoles.length; j < jl; j++) {
+					tmpShape.holes.push(tmpHoles[j].h);
 				}
+			} //console.log("shape", shapes);
 
-				var minDistance = Infinity;
 
-				// project the point onto the plane of the triangle
+			return shapes;
+		}
 
-				plane.setFromCoplanarPoints( this.a, this.b, this.c );
-				plane.projectPoint( point, projectedPoint );
+	}
 
-				// check if the projection lies within the triangle
+	class Font {
+		constructor(data) {
+			this.type = 'Font';
+			this.data = data;
+		}
 
-				if ( this.containsPoint( projectedPoint ) === true ) {
+		generateShapes(text, size = 100) {
+			const shapes = [];
+			const paths = createPaths(text, size, this.data);
 
-					// if so, this is the closest point
+			for (let p = 0, pl = paths.length; p < pl; p++) {
+				Array.prototype.push.apply(shapes, paths[p].toShapes());
+			}
 
-					target.copy( projectedPoint );
+			return shapes;
+		}
 
-				} else {
+	}
 
-					// if not, the point falls outside the triangle. the target is the closest point to the triangle's edges or vertices
+	function createPaths(text, size, data) {
+		const chars = Array.from(text);
+		const scale = size / data.resolution;
+		const line_height = (data.boundingBox.yMax - data.boundingBox.yMin + data.underlineThickness) * scale;
+		const paths = [];
+		let offsetX = 0,
+				offsetY = 0;
 
-					edgeList[ 0 ].set( this.a, this.b );
-					edgeList[ 1 ].set( this.b, this.c );
-					edgeList[ 2 ].set( this.c, this.a );
+		for (let i = 0; i < chars.length; i++) {
+			const char = chars[i];
 
-					for ( var i = 0; i < edgeList.length; i ++ ) {
+			if (char === '\n') {
+				offsetX = 0;
+				offsetY -= line_height;
+			} else {
+				const ret = createPath(char, scale, offsetX, offsetY, data);
+				offsetX += ret.offsetX;
+				paths.push(ret.path);
+			}
+		}
 
-						edgeList[ i ].closestPointToPoint( projectedPoint, true, closestPoint );
+		return paths;
+	}
 
-						var distance = projectedPoint.distanceToSquared( closestPoint );
+	function createPath(char, scale, offsetX, offsetY, data) {
+		const glyph = data.glyphs[char] || data.glyphs['?'];
 
-						if ( distance < minDistance ) {
+		if (!glyph) {
+			console.error('THREE.Font: character "' + char + '" does not exists in font family ' + data.familyName + '.');
+			return;
+		}
 
-							minDistance = distance;
+		const path = new ShapePath();
+		let x, y, cpx, cpy, cpx1, cpy1, cpx2, cpy2;
 
-							target.copy( closestPoint );
+		if (glyph.o) {
+			const outline = glyph._cachedOutline || (glyph._cachedOutline = glyph.o.split(' '));
 
-						}
+			for (let i = 0, l = outline.length; i < l;) {
+				const action = outline[i++];
 
-					}
+				switch (action) {
+					case 'm':
+						// moveTo
+						x = outline[i++] * scale + offsetX;
+						y = outline[i++] * scale + offsetY;
+						path.moveTo(x, y);
+						break;
 
-				}
+					case 'l':
+						// lineTo
+						x = outline[i++] * scale + offsetX;
+						y = outline[i++] * scale + offsetY;
+						path.lineTo(x, y);
+						break;
 
-				return target;
-
-			};
-
-		}(),
-
-		equals: function ( triangle ) {
-
-			return triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );
+					case 'q':
+						// quadraticCurveTo
+						cpx = outline[i++] * scale + offsetX;
+						cpy = outline[i++] * scale + offsetY;
+						cpx1 = outline[i++] * scale + offsetX;
+						cpy1 = outline[i++] * scale + offsetY;
+						path.quadraticCurveTo(cpx1, cpy1, cpx, cpy);
+						break;
 
+					case 'b':
+						// bezierCurveTo
+						cpx = outline[i++] * scale + offsetX;
+						cpy = outline[i++] * scale + offsetY;
+						cpx1 = outline[i++] * scale + offsetX;
+						cpy1 = outline[i++] * scale + offsetY;
+						cpx2 = outline[i++] * scale + offsetX;
+						cpy2 = outline[i++] * scale + offsetY;
+						path.bezierCurveTo(cpx1, cpy1, cpx2, cpy2, cpx, cpy);
+						break;
+				}
+			}
 		}
 
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author jonobr1 / http://jonobr1.com/
-	 */
+		return {
+			offsetX: glyph.ha * scale,
+			path: path
+		};
+	}
 
-	function Mesh( geometry, material ) {
+	Font.prototype.isFont = true;
 
-		Object3D.call( this );
+	class FontLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
 
-		this.type = 'Mesh';
+		load(url, onLoad, onProgress, onError) {
+			const scope = this;
+			const loader = new FileLoader(this.manager);
+			loader.setPath(this.path);
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(scope.withCredentials);
+			loader.load(url, function (text) {
+				let json;
 
-		this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
-		this.material = material !== undefined ? material : new MeshBasicMaterial( { color: Math.random() * 0xffffff } );
+				try {
+					json = JSON.parse(text);
+				} catch (e) {
+					console.warn('THREE.FontLoader: typeface.js support is being deprecated. Use typeface.json instead.');
+					json = JSON.parse(text.substring(65, text.length - 2));
+				}
 
-		this.drawMode = TrianglesDrawMode;
+				const font = scope.parse(json);
+				if (onLoad) onLoad(font);
+			}, onProgress, onError);
+		}
 
-		this.updateMorphTargets();
+		parse(json) {
+			return new Font(json);
+		}
 
 	}
 
-	Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: Mesh,
+	let _context;
 
-		isMesh: true,
-
-		setDrawMode: function ( value ) {
-
-			this.drawMode = value;
+	const AudioContext = {
+		getContext: function () {
+			if (_context === undefined) {
+				_context = new (window.AudioContext || window.webkitAudioContext)();
+			}
 
+			return _context;
 		},
+		setContext: function (value) {
+			_context = value;
+		}
+	};
 
-		copy: function ( source ) {
-
-			Object3D.prototype.copy.call( this, source );
-
-			this.drawMode = source.drawMode;
-
-			if ( source.morphTargetInfluences !== undefined ) {
-
-				this.morphTargetInfluences = source.morphTargetInfluences.slice();
-
-			}
+	class AudioLoader extends Loader {
+		constructor(manager) {
+			super(manager);
+		}
 
-			if ( source.morphTargetDictionary !== undefined ) {
+		load(url, onLoad, onProgress, onError) {
+			const scope = this;
+			const loader = new FileLoader(this.manager);
+			loader.setResponseType('arraybuffer');
+			loader.setPath(this.path);
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(this.withCredentials);
+			loader.load(url, function (buffer) {
+				try {
+					// Create a copy of the buffer. The `decodeAudioData` method
+					// detaches the buffer when complete, preventing reuse.
+					const bufferCopy = buffer.slice(0);
+					const context = AudioContext.getContext();
+					context.decodeAudioData(bufferCopy, function (audioBuffer) {
+						onLoad(audioBuffer);
+					});
+				} catch (e) {
+					if (onError) {
+						onError(e);
+					} else {
+						console.error(e);
+					}
 
-				this.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );
+					scope.manager.itemError(url);
+				}
+			}, onProgress, onError);
+		}
 
-			}
+	}
 
-			return this;
+	class HemisphereLightProbe extends LightProbe {
+		constructor(skyColor, groundColor, intensity = 1) {
+			super(undefined, intensity);
+			const color1 = new Color().set(skyColor);
+			const color2 = new Color().set(groundColor);
+			const sky = new Vector3(color1.r, color1.g, color1.b);
+			const ground = new Vector3(color2.r, color2.g, color2.b); // without extra factor of PI in the shader, should = 1 / Math.sqrt( Math.PI );
 
-		},
+			const c0 = Math.sqrt(Math.PI);
+			const c1 = c0 * Math.sqrt(0.75);
+			this.sh.coefficients[0].copy(sky).add(ground).multiplyScalar(c0);
+			this.sh.coefficients[1].copy(sky).sub(ground).multiplyScalar(c1);
+		}
 
-		updateMorphTargets: function () {
+	}
 
-			var geometry = this.geometry;
-			var m, ml, name;
+	HemisphereLightProbe.prototype.isHemisphereLightProbe = true;
 
-			if ( geometry.isBufferGeometry ) {
+	class AmbientLightProbe extends LightProbe {
+		constructor(color, intensity = 1) {
+			super(undefined, intensity);
+			const color1 = new Color().set(color); // without extra factor of PI in the shader, would be 2 / Math.sqrt( Math.PI );
 
-				var morphAttributes = geometry.morphAttributes;
-				var keys = Object.keys( morphAttributes );
+			this.sh.coefficients[0].set(color1.r, color1.g, color1.b).multiplyScalar(2 * Math.sqrt(Math.PI));
+		}
 
-				if ( keys.length > 0 ) {
+	}
 
-					var morphAttribute = morphAttributes[ keys[ 0 ] ];
+	AmbientLightProbe.prototype.isAmbientLightProbe = true;
 
-					if ( morphAttribute !== undefined ) {
+	const _eyeRight = /*@__PURE__*/new Matrix4();
 
-						this.morphTargetInfluences = [];
-						this.morphTargetDictionary = {};
+	const _eyeLeft = /*@__PURE__*/new Matrix4();
 
-						for ( m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
+	class StereoCamera {
+		constructor() {
+			this.type = 'StereoCamera';
+			this.aspect = 1;
+			this.eyeSep = 0.064;
+			this.cameraL = new PerspectiveCamera();
+			this.cameraL.layers.enable(1);
+			this.cameraL.matrixAutoUpdate = false;
+			this.cameraR = new PerspectiveCamera();
+			this.cameraR.layers.enable(2);
+			this.cameraR.matrixAutoUpdate = false;
+			this._cache = {
+				focus: null,
+				fov: null,
+				aspect: null,
+				near: null,
+				far: null,
+				zoom: null,
+				eyeSep: null
+			};
+		}
 
-							name = morphAttribute[ m ].name || String( m );
+		update(camera) {
+			const cache = this._cache;
+			const needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov || cache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near || cache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;
 
-							this.morphTargetInfluences.push( 0 );
-							this.morphTargetDictionary[ name ] = m;
+			if (needsUpdate) {
+				cache.focus = camera.focus;
+				cache.fov = camera.fov;
+				cache.aspect = camera.aspect * this.aspect;
+				cache.near = camera.near;
+				cache.far = camera.far;
+				cache.zoom = camera.zoom;
+				cache.eyeSep = this.eyeSep; // Off-axis stereoscopic effect based on
+				// http://paulbourke.net/stereographics/stereorender/
 
-						}
+				const projectionMatrix = camera.projectionMatrix.clone();
+				const eyeSepHalf = cache.eyeSep / 2;
+				const eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
+				const ymax = cache.near * Math.tan(DEG2RAD * cache.fov * 0.5) / cache.zoom;
+				let xmin, xmax; // translate xOffset
 
-					}
+				_eyeLeft.elements[12] = -eyeSepHalf;
+				_eyeRight.elements[12] = eyeSepHalf; // for left eye
 
-				}
+				xmin = -ymax * cache.aspect + eyeSepOnProjection;
+				xmax = ymax * cache.aspect + eyeSepOnProjection;
+				projectionMatrix.elements[0] = 2 * cache.near / (xmax - xmin);
+				projectionMatrix.elements[8] = (xmax + xmin) / (xmax - xmin);
+				this.cameraL.projectionMatrix.copy(projectionMatrix); // for right eye
 
-			} else {
+				xmin = -ymax * cache.aspect - eyeSepOnProjection;
+				xmax = ymax * cache.aspect - eyeSepOnProjection;
+				projectionMatrix.elements[0] = 2 * cache.near / (xmax - xmin);
+				projectionMatrix.elements[8] = (xmax + xmin) / (xmax - xmin);
+				this.cameraR.projectionMatrix.copy(projectionMatrix);
+			}
 
-				var morphTargets = geometry.morphTargets;
+			this.cameraL.matrixWorld.copy(camera.matrixWorld).multiply(_eyeLeft);
+			this.cameraR.matrixWorld.copy(camera.matrixWorld).multiply(_eyeRight);
+		}
 
-				if ( morphTargets !== undefined && morphTargets.length > 0 ) {
+	}
 
-					this.morphTargetInfluences = [];
-					this.morphTargetDictionary = {};
+	class Clock {
+		constructor(autoStart = true) {
+			this.autoStart = autoStart;
+			this.startTime = 0;
+			this.oldTime = 0;
+			this.elapsedTime = 0;
+			this.running = false;
+		}
 
-					for ( m = 0, ml = morphTargets.length; m < ml; m ++ ) {
+		start() {
+			this.startTime = now();
+			this.oldTime = this.startTime;
+			this.elapsedTime = 0;
+			this.running = true;
+		}
 
-						name = morphTargets[ m ].name || String( m );
+		stop() {
+			this.getElapsedTime();
+			this.running = false;
+			this.autoStart = false;
+		}
 
-						this.morphTargetInfluences.push( 0 );
-						this.morphTargetDictionary[ name ] = m;
+		getElapsedTime() {
+			this.getDelta();
+			return this.elapsedTime;
+		}
 
-					}
+		getDelta() {
+			let diff = 0;
 
-				}
+			if (this.autoStart && !this.running) {
+				this.start();
+				return 0;
+			}
 
+			if (this.running) {
+				const newTime = now();
+				diff = (newTime - this.oldTime) / 1000;
+				this.oldTime = newTime;
+				this.elapsedTime += diff;
 			}
 
-		},
+			return diff;
+		}
 
-		raycast: ( function () {
+	}
 
-			var inverseMatrix = new Matrix4();
-			var ray = new Ray();
-			var sphere = new Sphere();
+	function now() {
+		return (typeof performance === 'undefined' ? Date : performance).now(); // see #10732
+	}
 
-			var vA = new Vector3();
-			var vB = new Vector3();
-			var vC = new Vector3();
+	const _position$1 = /*@__PURE__*/new Vector3();
 
-			var tempA = new Vector3();
-			var tempB = new Vector3();
-			var tempC = new Vector3();
+	const _quaternion$1 = /*@__PURE__*/new Quaternion();
 
-			var uvA = new Vector2();
-			var uvB = new Vector2();
-			var uvC = new Vector2();
+	const _scale$1 = /*@__PURE__*/new Vector3();
 
-			var barycoord = new Vector3();
+	const _orientation$1 = /*@__PURE__*/new Vector3();
 
-			var intersectionPoint = new Vector3();
-			var intersectionPointWorld = new Vector3();
+	class AudioListener extends Object3D {
+		constructor() {
+			super();
+			this.type = 'AudioListener';
+			this.context = AudioContext.getContext();
+			this.gain = this.context.createGain();
+			this.gain.connect(this.context.destination);
+			this.filter = null;
+			this.timeDelta = 0; // private
 
-			function uvIntersection( point, p1, p2, p3, uv1, uv2, uv3 ) {
+			this._clock = new Clock();
+		}
 
-				Triangle.getBarycoord( point, p1, p2, p3, barycoord );
+		getInput() {
+			return this.gain;
+		}
 
-				uv1.multiplyScalar( barycoord.x );
-				uv2.multiplyScalar( barycoord.y );
-				uv3.multiplyScalar( barycoord.z );
+		removeFilter() {
+			if (this.filter !== null) {
+				this.gain.disconnect(this.filter);
+				this.filter.disconnect(this.context.destination);
+				this.gain.connect(this.context.destination);
+				this.filter = null;
+			}
 
-				uv1.add( uv2 ).add( uv3 );
+			return this;
+		}
 
-				return uv1.clone();
+		getFilter() {
+			return this.filter;
+		}
 
+		setFilter(value) {
+			if (this.filter !== null) {
+				this.gain.disconnect(this.filter);
+				this.filter.disconnect(this.context.destination);
+			} else {
+				this.gain.disconnect(this.context.destination);
 			}
 
-			function checkIntersection( object, material, raycaster, ray, pA, pB, pC, point ) {
+			this.filter = value;
+			this.gain.connect(this.filter);
+			this.filter.connect(this.context.destination);
+			return this;
+		}
 
-				var intersect;
+		getMasterVolume() {
+			return this.gain.gain.value;
+		}
 
-				if ( material.side === BackSide ) {
+		setMasterVolume(value) {
+			this.gain.gain.setTargetAtTime(value, this.context.currentTime, 0.01);
+			return this;
+		}
 
-					intersect = ray.intersectTriangle( pC, pB, pA, true, point );
+		updateMatrixWorld(force) {
+			super.updateMatrixWorld(force);
+			const listener = this.context.listener;
+			const up = this.up;
+			this.timeDelta = this._clock.getDelta();
+			this.matrixWorld.decompose(_position$1, _quaternion$1, _scale$1);
 
-				} else {
+			_orientation$1.set(0, 0, -1).applyQuaternion(_quaternion$1);
 
-					intersect = ray.intersectTriangle( pA, pB, pC, material.side !== DoubleSide, point );
+			if (listener.positionX) {
+				// code path for Chrome (see #14393)
+				const endTime = this.context.currentTime + this.timeDelta;
+				listener.positionX.linearRampToValueAtTime(_position$1.x, endTime);
+				listener.positionY.linearRampToValueAtTime(_position$1.y, endTime);
+				listener.positionZ.linearRampToValueAtTime(_position$1.z, endTime);
+				listener.forwardX.linearRampToValueAtTime(_orientation$1.x, endTime);
+				listener.forwardY.linearRampToValueAtTime(_orientation$1.y, endTime);
+				listener.forwardZ.linearRampToValueAtTime(_orientation$1.z, endTime);
+				listener.upX.linearRampToValueAtTime(up.x, endTime);
+				listener.upY.linearRampToValueAtTime(up.y, endTime);
+				listener.upZ.linearRampToValueAtTime(up.z, endTime);
+			} else {
+				listener.setPosition(_position$1.x, _position$1.y, _position$1.z);
+				listener.setOrientation(_orientation$1.x, _orientation$1.y, _orientation$1.z, up.x, up.y, up.z);
+			}
+		}
 
-				}
+	}
 
-				if ( intersect === null ) return null;
+	class Audio extends Object3D {
+		constructor(listener) {
+			super();
+			this.type = 'Audio';
+			this.listener = listener;
+			this.context = listener.context;
+			this.gain = this.context.createGain();
+			this.gain.connect(listener.getInput());
+			this.autoplay = false;
+			this.buffer = null;
+			this.detune = 0;
+			this.loop = false;
+			this.loopStart = 0;
+			this.loopEnd = 0;
+			this.offset = 0;
+			this.duration = undefined;
+			this.playbackRate = 1;
+			this.isPlaying = false;
+			this.hasPlaybackControl = true;
+			this.source = null;
+			this.sourceType = 'empty';
+			this._startedAt = 0;
+			this._progress = 0;
+			this._connected = false;
+			this.filters = [];
+		}
 
-				intersectionPointWorld.copy( point );
-				intersectionPointWorld.applyMatrix4( object.matrixWorld );
+		getOutput() {
+			return this.gain;
+		}
 
-				var distance = raycaster.ray.origin.distanceTo( intersectionPointWorld );
+		setNodeSource(audioNode) {
+			this.hasPlaybackControl = false;
+			this.sourceType = 'audioNode';
+			this.source = audioNode;
+			this.connect();
+			return this;
+		}
 
-				if ( distance < raycaster.near || distance > raycaster.far ) return null;
+		setMediaElementSource(mediaElement) {
+			this.hasPlaybackControl = false;
+			this.sourceType = 'mediaNode';
+			this.source = this.context.createMediaElementSource(mediaElement);
+			this.connect();
+			return this;
+		}
 
-				return {
-					distance: distance,
-					point: intersectionPointWorld.clone(),
-					object: object
-				};
+		setMediaStreamSource(mediaStream) {
+			this.hasPlaybackControl = false;
+			this.sourceType = 'mediaStreamNode';
+			this.source = this.context.createMediaStreamSource(mediaStream);
+			this.connect();
+			return this;
+		}
 
+		setBuffer(audioBuffer) {
+			this.buffer = audioBuffer;
+			this.sourceType = 'buffer';
+			if (this.autoplay) this.play();
+			return this;
+		}
+
+		play(delay = 0) {
+			if (this.isPlaying === true) {
+				console.warn('THREE.Audio: Audio is already playing.');
+				return;
 			}
 
-			function checkBufferGeometryIntersection( object, raycaster, ray, position, uv, a, b, c ) {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return;
+			}
 
-				vA.fromBufferAttribute( position, a );
-				vB.fromBufferAttribute( position, b );
-				vC.fromBufferAttribute( position, c );
+			this._startedAt = this.context.currentTime + delay;
+			const source = this.context.createBufferSource();
+			source.buffer = this.buffer;
+			source.loop = this.loop;
+			source.loopStart = this.loopStart;
+			source.loopEnd = this.loopEnd;
+			source.onended = this.onEnded.bind(this);
+			source.start(this._startedAt, this._progress + this.offset, this.duration);
+			this.isPlaying = true;
+			this.source = source;
+			this.setDetune(this.detune);
+			this.setPlaybackRate(this.playbackRate);
+			return this.connect();
+		}
 
-				var intersection = checkIntersection( object, object.material, raycaster, ray, vA, vB, vC, intersectionPoint );
+		pause() {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return;
+			}
 
-				if ( intersection ) {
+			if (this.isPlaying === true) {
+				// update current progress
+				this._progress += Math.max(this.context.currentTime - this._startedAt, 0) * this.playbackRate;
 
-					if ( uv ) {
+				if (this.loop === true) {
+					// ensure _progress does not exceed duration with looped audios
+					this._progress = this._progress % (this.duration || this.buffer.duration);
+				}
 
-						uvA.fromBufferAttribute( uv, a );
-						uvB.fromBufferAttribute( uv, b );
-						uvC.fromBufferAttribute( uv, c );
+				this.source.stop();
+				this.source.onended = null;
+				this.isPlaying = false;
+			}
 
-						intersection.uv = uvIntersection( intersectionPoint, vA, vB, vC, uvA, uvB, uvC );
+			return this;
+		}
 
-					}
+		stop() {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return;
+			}
 
-					var face = new Face3( a, b, c );
-					Triangle.getNormal( vA, vB, vC, face.normal );
+			this._progress = 0;
+			this.source.stop();
+			this.source.onended = null;
+			this.isPlaying = false;
+			return this;
+		}
 
-					intersection.face = face;
-					intersection.faceIndex = a;
+		connect() {
+			if (this.filters.length > 0) {
+				this.source.connect(this.filters[0]);
 
+				for (let i = 1, l = this.filters.length; i < l; i++) {
+					this.filters[i - 1].connect(this.filters[i]);
 				}
 
-				return intersection;
-
+				this.filters[this.filters.length - 1].connect(this.getOutput());
+			} else {
+				this.source.connect(this.getOutput());
 			}
 
-			return function raycast( raycaster, intersects ) {
-
-				var geometry = this.geometry;
-				var material = this.material;
-				var matrixWorld = this.matrixWorld;
+			this._connected = true;
+			return this;
+		}
 
-				if ( material === undefined ) return;
+		disconnect() {
+			if (this.filters.length > 0) {
+				this.source.disconnect(this.filters[0]);
 
-				// Checking boundingSphere distance to ray
+				for (let i = 1, l = this.filters.length; i < l; i++) {
+					this.filters[i - 1].disconnect(this.filters[i]);
+				}
 
-				if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
+				this.filters[this.filters.length - 1].disconnect(this.getOutput());
+			} else {
+				this.source.disconnect(this.getOutput());
+			}
 
-				sphere.copy( geometry.boundingSphere );
-				sphere.applyMatrix4( matrixWorld );
+			this._connected = false;
+			return this;
+		}
 
-				if ( raycaster.ray.intersectsSphere( sphere ) === false ) return;
+		getFilters() {
+			return this.filters;
+		}
 
-				//
+		setFilters(value) {
+			if (!value) value = [];
 
-				inverseMatrix.getInverse( matrixWorld );
-				ray.copy( raycaster.ray ).applyMatrix4( inverseMatrix );
+			if (this._connected === true) {
+				this.disconnect();
+				this.filters = value.slice();
+				this.connect();
+			} else {
+				this.filters = value.slice();
+			}
 
-				// Check boundingBox before continuing
+			return this;
+		}
 
-				if ( geometry.boundingBox !== null ) {
+		setDetune(value) {
+			this.detune = value;
+			if (this.source.detune === undefined) return; // only set detune when available
 
-					if ( ray.intersectsBox( geometry.boundingBox ) === false ) return;
+			if (this.isPlaying === true) {
+				this.source.detune.setTargetAtTime(this.detune, this.context.currentTime, 0.01);
+			}
 
-				}
+			return this;
+		}
 
-				var intersection;
+		getDetune() {
+			return this.detune;
+		}
 
-				if ( geometry.isBufferGeometry ) {
+		getFilter() {
+			return this.getFilters()[0];
+		}
 
-					var a, b, c;
-					var index = geometry.index;
-					var position = geometry.attributes.position;
-					var uv = geometry.attributes.uv;
-					var i, l;
+		setFilter(filter) {
+			return this.setFilters(filter ? [filter] : []);
+		}
 
-					if ( index !== null ) {
+		setPlaybackRate(value) {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return;
+			}
 
-						// indexed buffer geometry
+			this.playbackRate = value;
 
-						for ( i = 0, l = index.count; i < l; i += 3 ) {
+			if (this.isPlaying === true) {
+				this.source.playbackRate.setTargetAtTime(this.playbackRate, this.context.currentTime, 0.01);
+			}
 
-							a = index.getX( i );
-							b = index.getX( i + 1 );
-							c = index.getX( i + 2 );
+			return this;
+		}
 
-							intersection = checkBufferGeometryIntersection( this, raycaster, ray, position, uv, a, b, c );
+		getPlaybackRate() {
+			return this.playbackRate;
+		}
 
-							if ( intersection ) {
+		onEnded() {
+			this.isPlaying = false;
+		}
 
-								intersection.faceIndex = Math.floor( i / 3 ); // triangle number in indices buffer semantics
-								intersects.push( intersection );
+		getLoop() {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return false;
+			}
 
-							}
+			return this.loop;
+		}
 
-						}
+		setLoop(value) {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return;
+			}
 
-					} else if ( position !== undefined ) {
+			this.loop = value;
 
-						// non-indexed buffer geometry
+			if (this.isPlaying === true) {
+				this.source.loop = this.loop;
+			}
 
-						for ( i = 0, l = position.count; i < l; i += 3 ) {
+			return this;
+		}
 
-							a = i;
-							b = i + 1;
-							c = i + 2;
+		setLoopStart(value) {
+			this.loopStart = value;
+			return this;
+		}
 
-							intersection = checkBufferGeometryIntersection( this, raycaster, ray, position, uv, a, b, c );
+		setLoopEnd(value) {
+			this.loopEnd = value;
+			return this;
+		}
 
-							if ( intersection ) {
+		getVolume() {
+			return this.gain.gain.value;
+		}
 
-								intersection.index = a; // triangle number in positions buffer semantics
-								intersects.push( intersection );
+		setVolume(value) {
+			this.gain.gain.setTargetAtTime(value, this.context.currentTime, 0.01);
+			return this;
+		}
 
-							}
+	}
 
-						}
+	const _position = /*@__PURE__*/new Vector3();
 
-					}
+	const _quaternion = /*@__PURE__*/new Quaternion();
 
-				} else if ( geometry.isGeometry ) {
+	const _scale = /*@__PURE__*/new Vector3();
 
-					var fvA, fvB, fvC;
-					var isMultiMaterial = Array.isArray( material );
+	const _orientation = /*@__PURE__*/new Vector3();
 
-					var vertices = geometry.vertices;
-					var faces = geometry.faces;
-					var uvs;
+	class PositionalAudio extends Audio {
+		constructor(listener) {
+			super(listener);
+			this.panner = this.context.createPanner();
+			this.panner.panningModel = 'HRTF';
+			this.panner.connect(this.gain);
+		}
 
-					var faceVertexUvs = geometry.faceVertexUvs[ 0 ];
-					if ( faceVertexUvs.length > 0 ) uvs = faceVertexUvs;
+		getOutput() {
+			return this.panner;
+		}
 
-					for ( var f = 0, fl = faces.length; f < fl; f ++ ) {
+		getRefDistance() {
+			return this.panner.refDistance;
+		}
 
-						var face = faces[ f ];
-						var faceMaterial = isMultiMaterial ? material[ face.materialIndex ] : material;
+		setRefDistance(value) {
+			this.panner.refDistance = value;
+			return this;
+		}
 
-						if ( faceMaterial === undefined ) continue;
+		getRolloffFactor() {
+			return this.panner.rolloffFactor;
+		}
 
-						fvA = vertices[ face.a ];
-						fvB = vertices[ face.b ];
-						fvC = vertices[ face.c ];
+		setRolloffFactor(value) {
+			this.panner.rolloffFactor = value;
+			return this;
+		}
 
-						if ( faceMaterial.morphTargets === true ) {
+		getDistanceModel() {
+			return this.panner.distanceModel;
+		}
 
-							var morphTargets = geometry.morphTargets;
-							var morphInfluences = this.morphTargetInfluences;
+		setDistanceModel(value) {
+			this.panner.distanceModel = value;
+			return this;
+		}
 
-							vA.set( 0, 0, 0 );
-							vB.set( 0, 0, 0 );
-							vC.set( 0, 0, 0 );
+		getMaxDistance() {
+			return this.panner.maxDistance;
+		}
 
-							for ( var t = 0, tl = morphTargets.length; t < tl; t ++ ) {
+		setMaxDistance(value) {
+			this.panner.maxDistance = value;
+			return this;
+		}
 
-								var influence = morphInfluences[ t ];
+		setDirectionalCone(coneInnerAngle, coneOuterAngle, coneOuterGain) {
+			this.panner.coneInnerAngle = coneInnerAngle;
+			this.panner.coneOuterAngle = coneOuterAngle;
+			this.panner.coneOuterGain = coneOuterGain;
+			return this;
+		}
 
-								if ( influence === 0 ) continue;
+		updateMatrixWorld(force) {
+			super.updateMatrixWorld(force);
+			if (this.hasPlaybackControl === true && this.isPlaying === false) return;
+			this.matrixWorld.decompose(_position, _quaternion, _scale);
 
-								var targets = morphTargets[ t ].vertices;
+			_orientation.set(0, 0, 1).applyQuaternion(_quaternion);
 
-								vA.addScaledVector( tempA.subVectors( targets[ face.a ], fvA ), influence );
-								vB.addScaledVector( tempB.subVectors( targets[ face.b ], fvB ), influence );
-								vC.addScaledVector( tempC.subVectors( targets[ face.c ], fvC ), influence );
+			const panner = this.panner;
 
-							}
+			if (panner.positionX) {
+				// code path for Chrome and Firefox (see #14393)
+				const endTime = this.context.currentTime + this.listener.timeDelta;
+				panner.positionX.linearRampToValueAtTime(_position.x, endTime);
+				panner.positionY.linearRampToValueAtTime(_position.y, endTime);
+				panner.positionZ.linearRampToValueAtTime(_position.z, endTime);
+				panner.orientationX.linearRampToValueAtTime(_orientation.x, endTime);
+				panner.orientationY.linearRampToValueAtTime(_orientation.y, endTime);
+				panner.orientationZ.linearRampToValueAtTime(_orientation.z, endTime);
+			} else {
+				panner.setPosition(_position.x, _position.y, _position.z);
+				panner.setOrientation(_orientation.x, _orientation.y, _orientation.z);
+			}
+		}
 
-							vA.add( fvA );
-							vB.add( fvB );
-							vC.add( fvC );
+	}
 
-							fvA = vA;
-							fvB = vB;
-							fvC = vC;
+	class AudioAnalyser {
+		constructor(audio, fftSize = 2048) {
+			this.analyser = audio.context.createAnalyser();
+			this.analyser.fftSize = fftSize;
+			this.data = new Uint8Array(this.analyser.frequencyBinCount);
+			audio.getOutput().connect(this.analyser);
+		}
 
-						}
+		getFrequencyData() {
+			this.analyser.getByteFrequencyData(this.data);
+			return this.data;
+		}
 
-						intersection = checkIntersection( this, faceMaterial, raycaster, ray, fvA, fvB, fvC, intersectionPoint );
+		getAverageFrequency() {
+			let value = 0;
+			const data = this.getFrequencyData();
 
-						if ( intersection ) {
+			for (let i = 0; i < data.length; i++) {
+				value += data[i];
+			}
 
-							if ( uvs && uvs[ f ] ) {
+			return value / data.length;
+		}
 
-								var uvs_f = uvs[ f ];
-								uvA.copy( uvs_f[ 0 ] );
-								uvB.copy( uvs_f[ 1 ] );
-								uvC.copy( uvs_f[ 2 ] );
+	}
 
-								intersection.uv = uvIntersection( intersectionPoint, fvA, fvB, fvC, uvA, uvB, uvC );
-
-							}
+	class PropertyMixer {
+		constructor(binding, typeName, valueSize) {
+			this.binding = binding;
+			this.valueSize = valueSize;
+			let mixFunction, mixFunctionAdditive, setIdentity; // buffer layout: [ incoming | accu0 | accu1 | orig | addAccu | (optional work) ]
+			//
+			// interpolators can use .buffer as their .result
+			// the data then goes to 'incoming'
+			//
+			// 'accu0' and 'accu1' are used frame-interleaved for
+			// the cumulative result and are compared to detect
+			// changes
+			//
+			// 'orig' stores the original state of the property
+			//
+			// 'add' is used for additive cumulative results
+			//
+			// 'work' is optional and is only present for quaternion types. It is used
+			// to store intermediate quaternion multiplication results
 
-							intersection.face = face;
-							intersection.faceIndex = f;
-							intersects.push( intersection );
+			switch (typeName) {
+				case 'quaternion':
+					mixFunction = this._slerp;
+					mixFunctionAdditive = this._slerpAdditive;
+					setIdentity = this._setAdditiveIdentityQuaternion;
+					this.buffer = new Float64Array(valueSize * 6);
+					this._workIndex = 5;
+					break;
 
-						}
+				case 'string':
+				case 'bool':
+					mixFunction = this._select; // Use the regular mix function and for additive on these types,
+					// additive is not relevant for non-numeric types
 
-					}
+					mixFunctionAdditive = this._select;
+					setIdentity = this._setAdditiveIdentityOther;
+					this.buffer = new Array(valueSize * 5);
+					break;
 
-				}
+				default:
+					mixFunction = this._lerp;
+					mixFunctionAdditive = this._lerpAdditive;
+					setIdentity = this._setAdditiveIdentityNumeric;
+					this.buffer = new Float64Array(valueSize * 5);
+			}
 
-			};
+			this._mixBufferRegion = mixFunction;
+			this._mixBufferRegionAdditive = mixFunctionAdditive;
+			this._setIdentity = setIdentity;
+			this._origIndex = 3;
+			this._addIndex = 4;
+			this.cumulativeWeight = 0;
+			this.cumulativeWeightAdditive = 0;
+			this.useCount = 0;
+			this.referenceCount = 0;
+		} // accumulate data in the 'incoming' region into 'accu<i>'
 
-		}() ),
 
-		clone: function () {
+		accumulate(accuIndex, weight) {
+			// note: happily accumulating nothing when weight = 0, the caller knows
+			// the weight and shouldn't have made the call in the first place
+			const buffer = this.buffer,
+						stride = this.valueSize,
+						offset = accuIndex * stride + stride;
+			let currentWeight = this.cumulativeWeight;
 
-			return new this.constructor( this.geometry, this.material ).copy( this );
+			if (currentWeight === 0) {
+				// accuN := incoming * weight
+				for (let i = 0; i !== stride; ++i) {
+					buffer[offset + i] = buffer[i];
+				}
 
-		}
+				currentWeight = weight;
+			} else {
+				// accuN := accuN + incoming * weight
+				currentWeight += weight;
+				const mix = weight / currentWeight;
 
-	} );
+				this._mixBufferRegion(buffer, offset, 0, mix, stride);
+			}
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+			this.cumulativeWeight = currentWeight;
+		} // accumulate data in the 'incoming' region into 'add'
 
-	function WebGLBackground( renderer, state, geometries, premultipliedAlpha ) {
 
-		var clearColor = new Color( 0x000000 );
-		var clearAlpha = 0;
+		accumulateAdditive(weight) {
+			const buffer = this.buffer,
+						stride = this.valueSize,
+						offset = stride * this._addIndex;
 
-		var planeCamera, planeMesh;
-		var boxMesh;
+			if (this.cumulativeWeightAdditive === 0) {
+				// add = identity
+				this._setIdentity();
+			} // add := add + incoming * weight
 
-		function render( renderList, scene, camera, forceClear ) {
 
-			var background = scene.background;
+			this._mixBufferRegionAdditive(buffer, offset, 0, weight, stride);
 
-			if ( background === null ) {
+			this.cumulativeWeightAdditive += weight;
+		} // apply the state of 'accu<i>' to the binding when accus differ
 
-				setClear( clearColor, clearAlpha );
 
-			} else if ( background && background.isColor ) {
+		apply(accuIndex) {
+			const stride = this.valueSize,
+						buffer = this.buffer,
+						offset = accuIndex * stride + stride,
+						weight = this.cumulativeWeight,
+						weightAdditive = this.cumulativeWeightAdditive,
+						binding = this.binding;
+			this.cumulativeWeight = 0;
+			this.cumulativeWeightAdditive = 0;
 
-				setClear( background, 1 );
-				forceClear = true;
+			if (weight < 1) {
+				// accuN := accuN + original * ( 1 - cumulativeWeight )
+				const originalValueOffset = stride * this._origIndex;
 
+				this._mixBufferRegion(buffer, offset, originalValueOffset, 1 - weight, stride);
 			}
 
-			if ( renderer.autoClear || forceClear ) {
-
-				renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );
-
+			if (weightAdditive > 0) {
+				// accuN := accuN + additive accuN
+				this._mixBufferRegionAdditive(buffer, offset, this._addIndex * stride, 1, stride);
 			}
 
-			if ( background && background.isCubeTexture ) {
+			for (let i = stride, e = stride + stride; i !== e; ++i) {
+				if (buffer[i] !== buffer[i + stride]) {
+					// value has changed -> update scene graph
+					binding.setValue(buffer, offset);
+					break;
+				}
+			}
+		} // remember the state of the bound property and copy it to both accus
 
-				if ( boxMesh === undefined ) {
 
-					boxMesh = new Mesh(
-						new BoxBufferGeometry( 1, 1, 1 ),
-						new ShaderMaterial( {
-							uniforms: ShaderLib.cube.uniforms,
-							vertexShader: ShaderLib.cube.vertexShader,
-							fragmentShader: ShaderLib.cube.fragmentShader,
-							side: BackSide,
-							depthTest: true,
-							depthWrite: false,
-							fog: false
-						} )
-					);
+		saveOriginalState() {
+			const binding = this.binding;
+			const buffer = this.buffer,
+						stride = this.valueSize,
+						originalValueOffset = stride * this._origIndex;
+			binding.getValue(buffer, originalValueOffset); // accu[0..1] := orig -- initially detect changes against the original
 
-					boxMesh.geometry.removeAttribute( 'normal' );
-					boxMesh.geometry.removeAttribute( 'uv' );
+			for (let i = stride, e = originalValueOffset; i !== e; ++i) {
+				buffer[i] = buffer[originalValueOffset + i % stride];
+			} // Add to identity for additive
 
-					boxMesh.onBeforeRender = function ( renderer, scene, camera ) {
 
-						this.matrixWorld.copyPosition( camera.matrixWorld );
+			this._setIdentity();
 
-					};
+			this.cumulativeWeight = 0;
+			this.cumulativeWeightAdditive = 0;
+		} // apply the state previously taken via 'saveOriginalState' to the binding
 
-					geometries.update( boxMesh.geometry );
 
-				}
+		restoreOriginalState() {
+			const originalValueOffset = this.valueSize * 3;
+			this.binding.setValue(this.buffer, originalValueOffset);
+		}
 
-				boxMesh.material.uniforms.tCube.value = background;
+		_setAdditiveIdentityNumeric() {
+			const startIndex = this._addIndex * this.valueSize;
+			const endIndex = startIndex + this.valueSize;
 
-				renderList.push( boxMesh, boxMesh.geometry, boxMesh.material, 0, null );
+			for (let i = startIndex; i < endIndex; i++) {
+				this.buffer[i] = 0;
+			}
+		}
 
-			} else if ( background && background.isTexture ) {
+		_setAdditiveIdentityQuaternion() {
+			this._setAdditiveIdentityNumeric();
 
-				if ( planeCamera === undefined ) {
+			this.buffer[this._addIndex * this.valueSize + 3] = 1;
+		}
 
-					planeCamera = new OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );
+		_setAdditiveIdentityOther() {
+			const startIndex = this._origIndex * this.valueSize;
+			const targetIndex = this._addIndex * this.valueSize;
 
-					planeMesh = new Mesh(
-						new PlaneBufferGeometry( 2, 2 ),
-						new MeshBasicMaterial( { depthTest: false, depthWrite: false, fog: false } )
-					);
+			for (let i = 0; i < this.valueSize; i++) {
+				this.buffer[targetIndex + i] = this.buffer[startIndex + i];
+			}
+		} // mix functions
 
-					geometries.update( planeMesh.geometry );
 
+		_select(buffer, dstOffset, srcOffset, t, stride) {
+			if (t >= 0.5) {
+				for (let i = 0; i !== stride; ++i) {
+					buffer[dstOffset + i] = buffer[srcOffset + i];
 				}
+			}
+		}
 
-				planeMesh.material.map = background;
-
-				// TODO Push this to renderList
+		_slerp(buffer, dstOffset, srcOffset, t) {
+			Quaternion.slerpFlat(buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t);
+		}
 
-				renderer.renderBufferDirect( planeCamera, null, planeMesh.geometry, planeMesh.material, planeMesh, null );
+		_slerpAdditive(buffer, dstOffset, srcOffset, t, stride) {
+			const workOffset = this._workIndex * stride; // Store result in intermediate buffer offset
 
-			}
+			Quaternion.multiplyQuaternionsFlat(buffer, workOffset, buffer, dstOffset, buffer, srcOffset); // Slerp to the intermediate result
 
+			Quaternion.slerpFlat(buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t);
 		}
 
-		function setClear( color, alpha ) {
-
-			state.buffers.color.setClear( color.r, color.g, color.b, alpha, premultipliedAlpha );
+		_lerp(buffer, dstOffset, srcOffset, t, stride) {
+			const s = 1 - t;
 
+			for (let i = 0; i !== stride; ++i) {
+				const j = dstOffset + i;
+				buffer[j] = buffer[j] * s + buffer[srcOffset + i] * t;
+			}
 		}
 
-		return {
+		_lerpAdditive(buffer, dstOffset, srcOffset, t, stride) {
+			for (let i = 0; i !== stride; ++i) {
+				const j = dstOffset + i;
+				buffer[j] = buffer[j] + buffer[srcOffset + i] * t;
+			}
+		}
 
-			getClearColor: function () {
+	}
 
-				return clearColor;
+	// Characters [].:/ are reserved for track binding syntax.
+	const _RESERVED_CHARS_RE = '\\[\\]\\.:\\/';
 
-			},
-			setClearColor: function ( color, alpha ) {
+	const _reservedRe = new RegExp('[' + _RESERVED_CHARS_RE + ']', 'g'); // Attempts to allow node names from any language. ES5's `\w` regexp matches
+	// only latin characters, and the unicode \p{L} is not yet supported. So
+	// instead, we exclude reserved characters and match everything else.
 
-				clearColor.set( color );
-				clearAlpha = alpha !== undefined ? alpha : 1;
-				setClear( clearColor, clearAlpha );
 
-			},
-			getClearAlpha: function () {
+	const _wordChar = '[^' + _RESERVED_CHARS_RE + ']';
 
-				return clearAlpha;
+	const _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace('\\.', '') + ']'; // Parent directories, delimited by '/' or ':'. Currently unused, but must
+	// be matched to parse the rest of the track name.
 
-			},
-			setClearAlpha: function ( alpha ) {
 
-				clearAlpha = alpha;
-				setClear( clearColor, clearAlpha );
+	const _directoryRe = /((?:WC+[\/:])*)/.source.replace('WC', _wordChar); // Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.
 
-			},
-			render: render
 
-		};
+	const _nodeRe = /(WCOD+)?/.source.replace('WCOD', _wordCharOrDot); // Object on target node, and accessor. May not contain reserved
+	// characters. Accessor may contain any character except closing bracket.
 
-	}
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+	const _objectRe = /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace('WC', _wordChar); // Property and accessor. May not contain reserved characters. Accessor may
+	// contain any non-bracket characters.
 
-	function WebGLBufferRenderer( gl, extensions, info ) {
 
-		var mode;
+	const _propertyRe = /\.(WC+)(?:\[(.+)\])?/.source.replace('WC', _wordChar);
 
-		function setMode( value ) {
+	const _trackRe = new RegExp('' + '^' + _directoryRe + _nodeRe + _objectRe + _propertyRe + '$');
 
-			mode = value;
+	const _supportedObjectNames = ['material', 'materials', 'bones'];
 
+	class Composite {
+		constructor(targetGroup, path, optionalParsedPath) {
+			const parsedPath = optionalParsedPath || PropertyBinding.parseTrackName(path);
+			this._targetGroup = targetGroup;
+			this._bindings = targetGroup.subscribe_(path, parsedPath);
 		}
 
-		function render( start, count ) {
-
-			gl.drawArrays( mode, start, count );
+		getValue(array, offset) {
+			this.bind(); // bind all binding
 
-			info.update( count, mode );
+			const firstValidIndex = this._targetGroup.nCachedObjects_,
+						binding = this._bindings[firstValidIndex]; // and only call .getValue on the first
 
+			if (binding !== undefined) binding.getValue(array, offset);
 		}
 
-		function renderInstances( geometry, start, count ) {
+		setValue(array, offset) {
+			const bindings = this._bindings;
 
-			var extension = extensions.get( 'ANGLE_instanced_arrays' );
-
-			if ( extension === null ) {
+			for (let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
+				bindings[i].setValue(array, offset);
+			}
+		}
 
-				console.error( 'THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
-				return;
+		bind() {
+			const bindings = this._bindings;
 
+			for (let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
+				bindings[i].bind();
 			}
+		}
 
-			var position = geometry.attributes.position;
+		unbind() {
+			const bindings = this._bindings;
 
-			if ( position.isInterleavedBufferAttribute ) {
+			for (let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
+				bindings[i].unbind();
+			}
+		}
 
-				count = position.data.count;
+	} // Note: This class uses a State pattern on a per-method basis:
+	// 'bind' sets 'this.getValue' / 'setValue' and shadows the
+	// prototype version of these methods with one that represents
+	// the bound state. When the property is not found, the methods
+	// become no-ops.
 
-				extension.drawArraysInstancedANGLE( mode, 0, count, geometry.maxInstancedCount );
 
-			} else {
+	class PropertyBinding {
+		constructor(rootNode, path, parsedPath) {
+			this.path = path;
+			this.parsedPath = parsedPath || PropertyBinding.parseTrackName(path);
+			this.node = PropertyBinding.findNode(rootNode, this.parsedPath.nodeName) || rootNode;
+			this.rootNode = rootNode; // initial state of these methods that calls 'bind'
 
-				extension.drawArraysInstancedANGLE( mode, start, count, geometry.maxInstancedCount );
+			this.getValue = this._getValue_unbound;
+			this.setValue = this._setValue_unbound;
+		}
 
+		static create(root, path, parsedPath) {
+			if (!(root && root.isAnimationObjectGroup)) {
+				return new PropertyBinding(root, path, parsedPath);
+			} else {
+				return new PropertyBinding.Composite(root, path, parsedPath);
 			}
-
-			info.update( count, mode, geometry.maxInstancedCount );
-
 		}
+		/**
+		 * Replaces spaces with underscores and removes unsupported characters from
+		 * node names, to ensure compatibility with parseTrackName().
+		 *
+		 * @param {string} name Node name to be sanitized.
+		 * @return {string}
+		 */
 
-		//
-
-		this.setMode = setMode;
-		this.render = render;
-		this.renderInstances = renderInstances;
 
-	}
+		static sanitizeNodeName(name) {
+			return name.replace(/\s/g, '_').replace(_reservedRe, '');
+		}
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+		static parseTrackName(trackName) {
+			const matches = _trackRe.exec(trackName);
 
-	function WebGLCapabilities( gl, extensions, parameters ) {
+			if (!matches) {
+				throw new Error('PropertyBinding: Cannot parse trackName: ' + trackName);
+			}
 
-		var maxAnisotropy;
+			const results = {
+				// directoryName: matches[ 1 ], // (tschw) currently unused
+				nodeName: matches[2],
+				objectName: matches[3],
+				objectIndex: matches[4],
+				propertyName: matches[5],
+				// required
+				propertyIndex: matches[6]
+			};
+			const lastDot = results.nodeName && results.nodeName.lastIndexOf('.');
 
-		function getMaxAnisotropy() {
+			if (lastDot !== undefined && lastDot !== -1) {
+				const objectName = results.nodeName.substring(lastDot + 1); // Object names must be checked against an allowlist. Otherwise, there
+				// is no way to parse 'foo.bar.baz': 'baz' must be a property, but
+				// 'bar' could be the objectName, or part of a nodeName (which can
+				// include '.' characters).
 
-			if ( maxAnisotropy !== undefined ) return maxAnisotropy;
+				if (_supportedObjectNames.indexOf(objectName) !== -1) {
+					results.nodeName = results.nodeName.substring(0, lastDot);
+					results.objectName = objectName;
+				}
+			}
 
-			var extension = extensions.get( 'EXT_texture_filter_anisotropic' );
+			if (results.propertyName === null || results.propertyName.length === 0) {
+				throw new Error('PropertyBinding: can not parse propertyName from trackName: ' + trackName);
+			}
 
-			if ( extension !== null ) {
+			return results;
+		}
 
-				maxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );
+		static findNode(root, nodeName) {
+			if (!nodeName || nodeName === '' || nodeName === '.' || nodeName === -1 || nodeName === root.name || nodeName === root.uuid) {
+				return root;
+			} // search into skeleton bones.
 
-			} else {
 
-				maxAnisotropy = 0;
+			if (root.skeleton) {
+				const bone = root.skeleton.getBoneByName(nodeName);
 
-			}
+				if (bone !== undefined) {
+					return bone;
+				}
+			} // search into node subtree.
 
-			return maxAnisotropy;
 
-		}
+			if (root.children) {
+				const searchNodeSubtree = function (children) {
+					for (let i = 0; i < children.length; i++) {
+						const childNode = children[i];
 
-		function getMaxPrecision( precision ) {
+						if (childNode.name === nodeName || childNode.uuid === nodeName) {
+							return childNode;
+						}
 
-			if ( precision === 'highp' ) {
+						const result = searchNodeSubtree(childNode.children);
+						if (result) return result;
+					}
 
-				if ( gl.getShaderPrecisionFormat( gl.VERTEX_SHADER, gl.HIGH_FLOAT ).precision > 0 &&
-				     gl.getShaderPrecisionFormat( gl.FRAGMENT_SHADER, gl.HIGH_FLOAT ).precision > 0 ) {
+					return null;
+				};
 
-					return 'highp';
+				const subTreeNode = searchNodeSubtree(root.children);
 
+				if (subTreeNode) {
+					return subTreeNode;
 				}
-
-				precision = 'mediump';
-
 			}
 
-			if ( precision === 'mediump' ) {
+			return null;
+		} // these are used to "bind" a nonexistent property
 
-				if ( gl.getShaderPrecisionFormat( gl.VERTEX_SHADER, gl.MEDIUM_FLOAT ).precision > 0 &&
-				     gl.getShaderPrecisionFormat( gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT ).precision > 0 ) {
 
-					return 'mediump';
+		_getValue_unavailable() {}
 
-				}
+		_setValue_unavailable() {} // Getters
 
-			}
 
-			return 'lowp';
+		_getValue_direct(buffer, offset) {
+			buffer[offset] = this.node[this.propertyName];
+		}
+
+		_getValue_array(buffer, offset) {
+			const source = this.resolvedProperty;
 
+			for (let i = 0, n = source.length; i !== n; ++i) {
+				buffer[offset++] = source[i];
+			}
 		}
 
-		var precision = parameters.precision !== undefined ? parameters.precision : 'highp';
-		var maxPrecision = getMaxPrecision( precision );
+		_getValue_arrayElement(buffer, offset) {
+			buffer[offset] = this.resolvedProperty[this.propertyIndex];
+		}
 
-		if ( maxPrecision !== precision ) {
+		_getValue_toArray(buffer, offset) {
+			this.resolvedProperty.toArray(buffer, offset);
+		} // Direct
 
-			console.warn( 'THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.' );
-			precision = maxPrecision;
 
+		_setValue_direct(buffer, offset) {
+			this.targetObject[this.propertyName] = buffer[offset];
 		}
 
-		var logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;
+		_setValue_direct_setNeedsUpdate(buffer, offset) {
+			this.targetObject[this.propertyName] = buffer[offset];
+			this.targetObject.needsUpdate = true;
+		}
 
-		var maxTextures = gl.getParameter( gl.MAX_TEXTURE_IMAGE_UNITS );
-		var maxVertexTextures = gl.getParameter( gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS );
-		var maxTextureSize = gl.getParameter( gl.MAX_TEXTURE_SIZE );
-		var maxCubemapSize = gl.getParameter( gl.MAX_CUBE_MAP_TEXTURE_SIZE );
+		_setValue_direct_setMatrixWorldNeedsUpdate(buffer, offset) {
+			this.targetObject[this.propertyName] = buffer[offset];
+			this.targetObject.matrixWorldNeedsUpdate = true;
+		} // EntireArray
 
-		var maxAttributes = gl.getParameter( gl.MAX_VERTEX_ATTRIBS );
-		var maxVertexUniforms = gl.getParameter( gl.MAX_VERTEX_UNIFORM_VECTORS );
-		var maxVaryings = gl.getParameter( gl.MAX_VARYING_VECTORS );
-		var maxFragmentUniforms = gl.getParameter( gl.MAX_FRAGMENT_UNIFORM_VECTORS );
 
-		var vertexTextures = maxVertexTextures > 0;
-		var floatFragmentTextures = !! extensions.get( 'OES_texture_float' );
-		var floatVertexTextures = vertexTextures && floatFragmentTextures;
+		_setValue_array(buffer, offset) {
+			const dest = this.resolvedProperty;
 
-		return {
+			for (let i = 0, n = dest.length; i !== n; ++i) {
+				dest[i] = buffer[offset++];
+			}
+		}
 
-			getMaxAnisotropy: getMaxAnisotropy,
-			getMaxPrecision: getMaxPrecision,
+		_setValue_array_setNeedsUpdate(buffer, offset) {
+			const dest = this.resolvedProperty;
 
-			precision: precision,
-			logarithmicDepthBuffer: logarithmicDepthBuffer,
+			for (let i = 0, n = dest.length; i !== n; ++i) {
+				dest[i] = buffer[offset++];
+			}
 
-			maxTextures: maxTextures,
-			maxVertexTextures: maxVertexTextures,
-			maxTextureSize: maxTextureSize,
-			maxCubemapSize: maxCubemapSize,
+			this.targetObject.needsUpdate = true;
+		}
 
-			maxAttributes: maxAttributes,
-			maxVertexUniforms: maxVertexUniforms,
-			maxVaryings: maxVaryings,
-			maxFragmentUniforms: maxFragmentUniforms,
+		_setValue_array_setMatrixWorldNeedsUpdate(buffer, offset) {
+			const dest = this.resolvedProperty;
 
-			vertexTextures: vertexTextures,
-			floatFragmentTextures: floatFragmentTextures,
-			floatVertexTextures: floatVertexTextures
+			for (let i = 0, n = dest.length; i !== n; ++i) {
+				dest[i] = buffer[offset++];
+			}
 
-		};
+			this.targetObject.matrixWorldNeedsUpdate = true;
+		} // ArrayElement
 
-	}
 
-	/**
-	 * @author tschw
-	 */
+		_setValue_arrayElement(buffer, offset) {
+			this.resolvedProperty[this.propertyIndex] = buffer[offset];
+		}
 
-	function WebGLClipping() {
+		_setValue_arrayElement_setNeedsUpdate(buffer, offset) {
+			this.resolvedProperty[this.propertyIndex] = buffer[offset];
+			this.targetObject.needsUpdate = true;
+		}
 
-		var scope = this,
+		_setValue_arrayElement_setMatrixWorldNeedsUpdate(buffer, offset) {
+			this.resolvedProperty[this.propertyIndex] = buffer[offset];
+			this.targetObject.matrixWorldNeedsUpdate = true;
+		} // HasToFromArray
 
-			globalState = null,
-			numGlobalPlanes = 0,
-			localClippingEnabled = false,
-			renderingShadows = false,
 
-			plane = new Plane(),
-			viewNormalMatrix = new Matrix3(),
+		_setValue_fromArray(buffer, offset) {
+			this.resolvedProperty.fromArray(buffer, offset);
+		}
 
-			uniform = { value: null, needsUpdate: false };
+		_setValue_fromArray_setNeedsUpdate(buffer, offset) {
+			this.resolvedProperty.fromArray(buffer, offset);
+			this.targetObject.needsUpdate = true;
+		}
 
-		this.uniform = uniform;
-		this.numPlanes = 0;
-		this.numIntersection = 0;
+		_setValue_fromArray_setMatrixWorldNeedsUpdate(buffer, offset) {
+			this.resolvedProperty.fromArray(buffer, offset);
+			this.targetObject.matrixWorldNeedsUpdate = true;
+		}
 
-		this.init = function ( planes, enableLocalClipping, camera ) {
+		_getValue_unbound(targetArray, offset) {
+			this.bind();
+			this.getValue(targetArray, offset);
+		}
 
-			var enabled =
-				planes.length !== 0 ||
-				enableLocalClipping ||
-				// enable state of previous frame - the clipping code has to
-				// run another frame in order to reset the state:
-				numGlobalPlanes !== 0 ||
-				localClippingEnabled;
+		_setValue_unbound(sourceArray, offset) {
+			this.bind();
+			this.setValue(sourceArray, offset);
+		} // create getter / setter pair for a property in the scene graph
 
-			localClippingEnabled = enableLocalClipping;
 
-			globalState = projectPlanes( planes, camera, 0 );
-			numGlobalPlanes = planes.length;
+		bind() {
+			let targetObject = this.node;
+			const parsedPath = this.parsedPath;
+			const objectName = parsedPath.objectName;
+			const propertyName = parsedPath.propertyName;
+			let propertyIndex = parsedPath.propertyIndex;
 
-			return enabled;
+			if (!targetObject) {
+				targetObject = PropertyBinding.findNode(this.rootNode, parsedPath.nodeName) || this.rootNode;
+				this.node = targetObject;
+			} // set fail state so we can just 'return' on error
 
-		};
 
-		this.beginShadows = function () {
+			this.getValue = this._getValue_unavailable;
+			this.setValue = this._setValue_unavailable; // ensure there is a value node
 
-			renderingShadows = true;
-			projectPlanes( null );
+			if (!targetObject) {
+				console.error('THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\'t found.');
+				return;
+			}
 
-		};
+			if (objectName) {
+				let objectIndex = parsedPath.objectIndex; // special cases were we need to reach deeper into the hierarchy to get the face materials....
 
-		this.endShadows = function () {
+				switch (objectName) {
+					case 'materials':
+						if (!targetObject.material) {
+							console.error('THREE.PropertyBinding: Can not bind to material as node does not have a material.', this);
+							return;
+						}
 
-			renderingShadows = false;
-			resetGlobalState();
+						if (!targetObject.material.materials) {
+							console.error('THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this);
+							return;
+						}
 
-		};
+						targetObject = targetObject.material.materials;
+						break;
 
-		this.setState = function ( planes, clipIntersection, clipShadows, camera, cache, fromCache ) {
+					case 'bones':
+						if (!targetObject.skeleton) {
+							console.error('THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this);
+							return;
+						} // potential future optimization: skip this if propertyIndex is already an integer
+						// and convert the integer string to a true integer.
 
-			if ( ! localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && ! clipShadows ) {
 
-				// there's no local clipping
+						targetObject = targetObject.skeleton.bones; // support resolving morphTarget names into indices.
 
-				if ( renderingShadows ) {
+						for (let i = 0; i < targetObject.length; i++) {
+							if (targetObject[i].name === objectIndex) {
+								objectIndex = i;
+								break;
+							}
+						}
 
-					// there's no global clipping
+						break;
 
-					projectPlanes( null );
+					default:
+						if (targetObject[objectName] === undefined) {
+							console.error('THREE.PropertyBinding: Can not bind to objectName of node undefined.', this);
+							return;
+						}
 
-				} else {
+						targetObject = targetObject[objectName];
+				}
 
-					resetGlobalState();
+				if (objectIndex !== undefined) {
+					if (targetObject[objectIndex] === undefined) {
+						console.error('THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject);
+						return;
+					}
 
+					targetObject = targetObject[objectIndex];
 				}
+			} // resolve property
 
-			} else {
-
-				var nGlobal = renderingShadows ? 0 : numGlobalPlanes,
-					lGlobal = nGlobal * 4,
 
-					dstArray = cache.clippingState || null;
+			const nodeProperty = targetObject[propertyName];
 
-				uniform.value = dstArray; // ensure unique state
+			if (nodeProperty === undefined) {
+				const nodeName = parsedPath.nodeName;
+				console.error('THREE.PropertyBinding: Trying to update property for track: ' + nodeName + '.' + propertyName + ' but it wasn\'t found.', targetObject);
+				return;
+			} // determine versioning scheme
 
-				dstArray = projectPlanes( planes, camera, lGlobal, fromCache );
 
-				for ( var i = 0; i !== lGlobal; ++ i ) {
+			let versioning = this.Versioning.None;
+			this.targetObject = targetObject;
 
-					dstArray[ i ] = globalState[ i ];
+			if (targetObject.needsUpdate !== undefined) {
+				// material
+				versioning = this.Versioning.NeedsUpdate;
+			} else if (targetObject.matrixWorldNeedsUpdate !== undefined) {
+				// node transform
+				versioning = this.Versioning.MatrixWorldNeedsUpdate;
+			} // determine how the property gets bound
 
-				}
 
-				cache.clippingState = dstArray;
-				this.numIntersection = clipIntersection ? this.numPlanes : 0;
-				this.numPlanes += nGlobal;
+			let bindingType = this.BindingType.Direct;
 
-			}
+			if (propertyIndex !== undefined) {
+				// access a sub element of the property array (only primitives are supported right now)
+				if (propertyName === 'morphTargetInfluences') {
+					// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.
+					// support resolving morphTarget names into indices.
+					if (!targetObject.geometry) {
+						console.error('THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this);
+						return;
+					}
 
+					if (targetObject.geometry.isBufferGeometry) {
+						if (!targetObject.geometry.morphAttributes) {
+							console.error('THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this);
+							return;
+						}
 
-		};
+						if (targetObject.morphTargetDictionary[propertyIndex] !== undefined) {
+							propertyIndex = targetObject.morphTargetDictionary[propertyIndex];
+						}
+					} else {
+						console.error('THREE.PropertyBinding: Can not bind to morphTargetInfluences on THREE.Geometry. Use THREE.BufferGeometry instead.', this);
+						return;
+					}
+				}
 
-		function resetGlobalState() {
+				bindingType = this.BindingType.ArrayElement;
+				this.resolvedProperty = nodeProperty;
+				this.propertyIndex = propertyIndex;
+			} else if (nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined) {
+				// must use copy for Object3D.Euler/Quaternion
+				bindingType = this.BindingType.HasFromToArray;
+				this.resolvedProperty = nodeProperty;
+			} else if (Array.isArray(nodeProperty)) {
+				bindingType = this.BindingType.EntireArray;
+				this.resolvedProperty = nodeProperty;
+			} else {
+				this.propertyName = propertyName;
+			} // select getter / setter
 
-			if ( uniform.value !== globalState ) {
 
-				uniform.value = globalState;
-				uniform.needsUpdate = numGlobalPlanes > 0;
+			this.getValue = this.GetterByBindingType[bindingType];
+			this.setValue = this.SetterByBindingTypeAndVersioning[bindingType][versioning];
+		}
 
-			}
-
-			scope.numPlanes = numGlobalPlanes;
-			scope.numIntersection = 0;
+		unbind() {
+			this.node = null; // back to the prototype version of getValue / setValue
+			// note: avoiding to mutate the shape of 'this' via 'delete'
 
+			this.getValue = this._getValue_unbound;
+			this.setValue = this._setValue_unbound;
 		}
 
-		function projectPlanes( planes, camera, dstOffset, skipTransform ) {
-
-			var nPlanes = planes !== null ? planes.length : 0,
-				dstArray = null;
+	}
 
-			if ( nPlanes !== 0 ) {
+	PropertyBinding.Composite = Composite;
+	PropertyBinding.prototype.BindingType = {
+		Direct: 0,
+		EntireArray: 1,
+		ArrayElement: 2,
+		HasFromToArray: 3
+	};
+	PropertyBinding.prototype.Versioning = {
+		None: 0,
+		NeedsUpdate: 1,
+		MatrixWorldNeedsUpdate: 2
+	};
+	PropertyBinding.prototype.GetterByBindingType = [PropertyBinding.prototype._getValue_direct, PropertyBinding.prototype._getValue_array, PropertyBinding.prototype._getValue_arrayElement, PropertyBinding.prototype._getValue_toArray];
+	PropertyBinding.prototype.SetterByBindingTypeAndVersioning = [[// Direct
+	PropertyBinding.prototype._setValue_direct, PropertyBinding.prototype._setValue_direct_setNeedsUpdate, PropertyBinding.prototype._setValue_direct_setMatrixWorldNeedsUpdate], [// EntireArray
+	PropertyBinding.prototype._setValue_array, PropertyBinding.prototype._setValue_array_setNeedsUpdate, PropertyBinding.prototype._setValue_array_setMatrixWorldNeedsUpdate], [// ArrayElement
+	PropertyBinding.prototype._setValue_arrayElement, PropertyBinding.prototype._setValue_arrayElement_setNeedsUpdate, PropertyBinding.prototype._setValue_arrayElement_setMatrixWorldNeedsUpdate], [// HasToFromArray
+	PropertyBinding.prototype._setValue_fromArray, PropertyBinding.prototype._setValue_fromArray_setNeedsUpdate, PropertyBinding.prototype._setValue_fromArray_setMatrixWorldNeedsUpdate]];
 
-				dstArray = uniform.value;
+	/**
+	 *
+	 * A group of objects that receives a shared animation state.
+	 *
+	 * Usage:
+	 *
+	 *	- Add objects you would otherwise pass as 'root' to the
+	 *		constructor or the .clipAction method of AnimationMixer.
+	 *
+	 *	- Instead pass this object as 'root'.
+	 *
+	 *	- You can also add and remove objects later when the mixer
+	 *		is running.
+	 *
+	 * Note:
+	 *
+	 *		Objects of this class appear as one object to the mixer,
+	 *		so cache control of the individual objects must be done
+	 *		on the group.
+	 *
+	 * Limitation:
+	 *
+	 *	- The animated properties must be compatible among the
+	 *		all objects in the group.
+	 *
+	 *	- A single property can either be controlled through a
+	 *		target group or directly, but not both.
+	 */
 
-				if ( skipTransform !== true || dstArray === null ) {
+	class AnimationObjectGroup {
+		constructor() {
+			this.uuid = generateUUID(); // cached objects followed by the active ones
 
-					var flatSize = dstOffset + nPlanes * 4,
-						viewMatrix = camera.matrixWorldInverse;
+			this._objects = Array.prototype.slice.call(arguments);
+			this.nCachedObjects_ = 0; // threshold
+			// note: read by PropertyBinding.Composite
 
-					viewNormalMatrix.getNormalMatrix( viewMatrix );
+			const indices = {};
+			this._indicesByUUID = indices; // for bookkeeping
 
-					if ( dstArray === null || dstArray.length < flatSize ) {
+			for (let i = 0, n = arguments.length; i !== n; ++i) {
+				indices[arguments[i].uuid] = i;
+			}
 
-						dstArray = new Float32Array( flatSize );
+			this._paths = []; // inside: string
 
-					}
+			this._parsedPaths = []; // inside: { we don't care, here }
 
-					for ( var i = 0, i4 = dstOffset; i !== nPlanes; ++ i, i4 += 4 ) {
+			this._bindings = []; // inside: Array< PropertyBinding >
 
-						plane.copy( planes[ i ] ).applyMatrix4( viewMatrix, viewNormalMatrix );
+			this._bindingsIndicesByPath = {}; // inside: indices in these arrays
 
-						plane.normal.toArray( dstArray, i4 );
-						dstArray[ i4 + 3 ] = plane.constant;
+			const scope = this;
+			this.stats = {
+				objects: {
+					get total() {
+						return scope._objects.length;
+					},
 
+					get inUse() {
+						return this.total - scope.nCachedObjects_;
 					}
 
-				}
-
-				uniform.value = dstArray;
-				uniform.needsUpdate = true;
-
-			}
-
-			scope.numPlanes = nPlanes;
+				},
 
-			return dstArray;
+				get bindingsPerObject() {
+					return scope._bindings.length;
+				}
 
+			};
 		}
 
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function WebGLExtensions( gl ) {
-
-		var extensions = {};
-
-		return {
+		add() {
+			const objects = this._objects,
+						indicesByUUID = this._indicesByUUID,
+						paths = this._paths,
+						parsedPaths = this._parsedPaths,
+						bindings = this._bindings,
+						nBindings = bindings.length;
+			let knownObject = undefined,
+					nObjects = objects.length,
+					nCachedObjects = this.nCachedObjects_;
 
-			get: function ( name ) {
+			for (let i = 0, n = arguments.length; i !== n; ++i) {
+				const object = arguments[i],
+							uuid = object.uuid;
+				let index = indicesByUUID[uuid];
 
-				if ( extensions[ name ] !== undefined ) {
+				if (index === undefined) {
+					// unknown object -> add it to the ACTIVE region
+					index = nObjects++;
+					indicesByUUID[uuid] = index;
+					objects.push(object); // accounting is done, now do the same for all bindings
 
-					return extensions[ name ];
+					for (let j = 0, m = nBindings; j !== m; ++j) {
+						bindings[j].push(new PropertyBinding(object, paths[j], parsedPaths[j]));
+					}
+				} else if (index < nCachedObjects) {
+					knownObject = objects[index]; // move existing object to the ACTIVE region
+
+					const firstActiveIndex = --nCachedObjects,
+								lastCachedObject = objects[firstActiveIndex];
+					indicesByUUID[lastCachedObject.uuid] = index;
+					objects[index] = lastCachedObject;
+					indicesByUUID[uuid] = firstActiveIndex;
+					objects[firstActiveIndex] = object; // accounting is done, now do the same for all bindings
+
+					for (let j = 0, m = nBindings; j !== m; ++j) {
+						const bindingsForPath = bindings[j],
+									lastCached = bindingsForPath[firstActiveIndex];
+						let binding = bindingsForPath[index];
+						bindingsForPath[index] = lastCached;
+
+						if (binding === undefined) {
+							// since we do not bother to create new bindings
+							// for objects that are cached, the binding may
+							// or may not exist
+							binding = new PropertyBinding(object, paths[j], parsedPaths[j]);
+						}
 
-				}
+						bindingsForPath[firstActiveIndex] = binding;
+					}
+				} else if (objects[index] !== knownObject) {
+					console.error('THREE.AnimationObjectGroup: Different objects with the same UUID ' + 'detected. Clean the caches or recreate your infrastructure when reloading scenes.');
+				} // else the object is already where we want it to be
 
-				var extension;
+			} // for arguments
 
-				switch ( name ) {
 
-					case 'WEBGL_depth_texture':
-						extension = gl.getExtension( 'WEBGL_depth_texture' ) || gl.getExtension( 'MOZ_WEBGL_depth_texture' ) || gl.getExtension( 'WEBKIT_WEBGL_depth_texture' );
-						break;
+			this.nCachedObjects_ = nCachedObjects;
+		}
 
-					case 'EXT_texture_filter_anisotropic':
-						extension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );
-						break;
+		remove() {
+			const objects = this._objects,
+						indicesByUUID = this._indicesByUUID,
+						bindings = this._bindings,
+						nBindings = bindings.length;
+			let nCachedObjects = this.nCachedObjects_;
 
-					case 'WEBGL_compressed_texture_s3tc':
-						extension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );
-						break;
+			for (let i = 0, n = arguments.length; i !== n; ++i) {
+				const object = arguments[i],
+							uuid = object.uuid,
+							index = indicesByUUID[uuid];
 
-					case 'WEBGL_compressed_texture_pvrtc':
-						extension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
-						break;
+				if (index !== undefined && index >= nCachedObjects) {
+					// move existing object into the CACHED region
+					const lastCachedIndex = nCachedObjects++,
+								firstActiveObject = objects[lastCachedIndex];
+					indicesByUUID[firstActiveObject.uuid] = index;
+					objects[index] = firstActiveObject;
+					indicesByUUID[uuid] = lastCachedIndex;
+					objects[lastCachedIndex] = object; // accounting is done, now do the same for all bindings
+
+					for (let j = 0, m = nBindings; j !== m; ++j) {
+						const bindingsForPath = bindings[j],
+									firstActive = bindingsForPath[lastCachedIndex],
+									binding = bindingsForPath[index];
+						bindingsForPath[index] = firstActive;
+						bindingsForPath[lastCachedIndex] = binding;
+					}
+				}
+			} // for arguments
 
-					case 'WEBGL_compressed_texture_etc1':
-						extension = gl.getExtension( 'WEBGL_compressed_texture_etc1' );
-						break;
 
-					default:
-						extension = gl.getExtension( name );
+			this.nCachedObjects_ = nCachedObjects;
+		} // remove & forget
 
-				}
 
-				if ( extension === null ) {
+		uncache() {
+			const objects = this._objects,
+						indicesByUUID = this._indicesByUUID,
+						bindings = this._bindings,
+						nBindings = bindings.length;
+			let nCachedObjects = this.nCachedObjects_,
+					nObjects = objects.length;
 
-					console.warn( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );
+			for (let i = 0, n = arguments.length; i !== n; ++i) {
+				const object = arguments[i],
+							uuid = object.uuid,
+							index = indicesByUUID[uuid];
 
-				}
+				if (index !== undefined) {
+					delete indicesByUUID[uuid];
 
-				extensions[ name ] = extension;
+					if (index < nCachedObjects) {
+						// object is cached, shrink the CACHED region
+						const firstActiveIndex = --nCachedObjects,
+									lastCachedObject = objects[firstActiveIndex],
+									lastIndex = --nObjects,
+									lastObject = objects[lastIndex]; // last cached object takes this object's place
+
+						indicesByUUID[lastCachedObject.uuid] = index;
+						objects[index] = lastCachedObject; // last object goes to the activated slot and pop
+
+						indicesByUUID[lastObject.uuid] = firstActiveIndex;
+						objects[firstActiveIndex] = lastObject;
+						objects.pop(); // accounting is done, now do the same for all bindings
+
+						for (let j = 0, m = nBindings; j !== m; ++j) {
+							const bindingsForPath = bindings[j],
+										lastCached = bindingsForPath[firstActiveIndex],
+										last = bindingsForPath[lastIndex];
+							bindingsForPath[index] = lastCached;
+							bindingsForPath[firstActiveIndex] = last;
+							bindingsForPath.pop();
+						}
+					} else {
+						// object is active, just swap with the last and pop
+						const lastIndex = --nObjects,
+									lastObject = objects[lastIndex];
 
-				return extension;
+						if (lastIndex > 0) {
+							indicesByUUID[lastObject.uuid] = index;
+						}
 
-			}
+						objects[index] = lastObject;
+						objects.pop(); // accounting is done, now do the same for all bindings
 
-		};
+						for (let j = 0, m = nBindings; j !== m; ++j) {
+							const bindingsForPath = bindings[j];
+							bindingsForPath[index] = bindingsForPath[lastIndex];
+							bindingsForPath.pop();
+						}
+					} // cached or active
 
-	}
+				} // if object is known
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+			} // for arguments
 
-	function WebGLGeometries( gl, attributes, info ) {
 
-		var geometries = {};
-		var wireframeAttributes = {};
+			this.nCachedObjects_ = nCachedObjects;
+		} // Internal interface used by befriended PropertyBinding.Composite:
 
-		function onGeometryDispose( event ) {
 
-			var geometry = event.target;
-			var buffergeometry = geometries[ geometry.id ];
+		subscribe_(path, parsedPath) {
+			// returns an array of bindings for the given path that is changed
+			// according to the contained objects in the group
+			const indicesByPath = this._bindingsIndicesByPath;
+			let index = indicesByPath[path];
+			const bindings = this._bindings;
+			if (index !== undefined) return bindings[index];
+			const paths = this._paths,
+						parsedPaths = this._parsedPaths,
+						objects = this._objects,
+						nObjects = objects.length,
+						nCachedObjects = this.nCachedObjects_,
+						bindingsForPath = new Array(nObjects);
+			index = bindings.length;
+			indicesByPath[path] = index;
+			paths.push(path);
+			parsedPaths.push(parsedPath);
+			bindings.push(bindingsForPath);
 
-			if ( buffergeometry.index !== null ) {
+			for (let i = nCachedObjects, n = objects.length; i !== n; ++i) {
+				const object = objects[i];
+				bindingsForPath[i] = new PropertyBinding(object, path, parsedPath);
+			}
 
-				attributes.remove( buffergeometry.index );
+			return bindingsForPath;
+		}
 
+		unsubscribe_(path) {
+			// tells the group to forget about a property path and no longer
+			// update the array previously obtained with 'subscribe_'
+			const indicesByPath = this._bindingsIndicesByPath,
+						index = indicesByPath[path];
+
+			if (index !== undefined) {
+				const paths = this._paths,
+							parsedPaths = this._parsedPaths,
+							bindings = this._bindings,
+							lastBindingsIndex = bindings.length - 1,
+							lastBindings = bindings[lastBindingsIndex],
+							lastBindingsPath = path[lastBindingsIndex];
+				indicesByPath[lastBindingsPath] = index;
+				bindings[index] = lastBindings;
+				bindings.pop();
+				parsedPaths[index] = parsedPaths[lastBindingsIndex];
+				parsedPaths.pop();
+				paths[index] = paths[lastBindingsIndex];
+				paths.pop();
 			}
+		}
+
+	}
 
-			for ( var name in buffergeometry.attributes ) {
+	AnimationObjectGroup.prototype.isAnimationObjectGroup = true;
 
-				attributes.remove( buffergeometry.attributes[ name ] );
+	class AnimationAction {
+		constructor(mixer, clip, localRoot = null, blendMode = clip.blendMode) {
+			this._mixer = mixer;
+			this._clip = clip;
+			this._localRoot = localRoot;
+			this.blendMode = blendMode;
+			const tracks = clip.tracks,
+						nTracks = tracks.length,
+						interpolants = new Array(nTracks);
+			const interpolantSettings = {
+				endingStart: ZeroCurvatureEnding,
+				endingEnd: ZeroCurvatureEnding
+			};
 
+			for (let i = 0; i !== nTracks; ++i) {
+				const interpolant = tracks[i].createInterpolant(null);
+				interpolants[i] = interpolant;
+				interpolant.settings = interpolantSettings;
 			}
 
-			geometry.removeEventListener( 'dispose', onGeometryDispose );
+			this._interpolantSettings = interpolantSettings;
+			this._interpolants = interpolants; // bound by the mixer
+			// inside: PropertyMixer (managed by the mixer)
 
-			delete geometries[ geometry.id ];
+			this._propertyBindings = new Array(nTracks);
+			this._cacheIndex = null; // for the memory manager
 
-			// TODO Remove duplicate code
+			this._byClipCacheIndex = null; // for the memory manager
 
-			var attribute = wireframeAttributes[ geometry.id ];
+			this._timeScaleInterpolant = null;
+			this._weightInterpolant = null;
+			this.loop = LoopRepeat;
+			this._loopCount = -1; // global mixer time when the action is to be started
+			// it's set back to 'null' upon start of the action
 
-			if ( attribute ) {
+			this._startTime = null; // scaled local time of the action
+			// gets clamped or wrapped to 0..clip.duration according to loop
 
-				attributes.remove( attribute );
-				delete wireframeAttributes[ geometry.id ];
+			this.time = 0;
+			this.timeScale = 1;
+			this._effectiveTimeScale = 1;
+			this.weight = 1;
+			this._effectiveWeight = 1;
+			this.repetitions = Infinity; // no. of repetitions when looping
 
-			}
+			this.paused = false; // true -> zero effective time scale
 
-			attribute = wireframeAttributes[ buffergeometry.id ];
+			this.enabled = true; // false -> zero effective weight
 
-			if ( attribute ) {
+			this.clampWhenFinished = false; // keep feeding the last frame?
 
-				attributes.remove( attribute );
-				delete wireframeAttributes[ buffergeometry.id ];
+			this.zeroSlopeAtStart = true; // for smooth interpolation w/o separate
 
-			}
+			this.zeroSlopeAtEnd = true; // clips for start, loop and end
+		} // State & Scheduling
 
-			//
 
-			info.memory.geometries --;
+		play() {
+			this._mixer._activateAction(this);
 
+			return this;
 		}
 
-		function get( object, geometry ) {
+		stop() {
+			this._mixer._deactivateAction(this);
 
-			var buffergeometry = geometries[ geometry.id ];
+			return this.reset();
+		}
 
-			if ( buffergeometry ) return buffergeometry;
+		reset() {
+			this.paused = false;
+			this.enabled = true;
+			this.time = 0; // restart clip
 
-			geometry.addEventListener( 'dispose', onGeometryDispose );
+			this._loopCount = -1; // forget previous loops
 
-			if ( geometry.isBufferGeometry ) {
+			this._startTime = null; // forget scheduling
 
-				buffergeometry = geometry;
+			return this.stopFading().stopWarping();
+		}
 
-			} else if ( geometry.isGeometry ) {
+		isRunning() {
+			return this.enabled && !this.paused && this.timeScale !== 0 && this._startTime === null && this._mixer._isActiveAction(this);
+		} // return true when play has been called
 
-				if ( geometry._bufferGeometry === undefined ) {
 
-					geometry._bufferGeometry = new BufferGeometry().setFromObject( object );
+		isScheduled() {
+			return this._mixer._isActiveAction(this);
+		}
 
-				}
+		startAt(time) {
+			this._startTime = time;
+			return this;
+		}
 
-				buffergeometry = geometry._bufferGeometry;
+		setLoop(mode, repetitions) {
+			this.loop = mode;
+			this.repetitions = repetitions;
+			return this;
+		} // Weight
+		// set the weight stopping any scheduled fading
+		// although .enabled = false yields an effective weight of zero, this
+		// method does *not* change .enabled, because it would be confusing
 
-			}
 
-			geometries[ geometry.id ] = buffergeometry;
+		setEffectiveWeight(weight) {
+			this.weight = weight; // note: same logic as when updated at runtime
 
-			info.memory.geometries ++;
+			this._effectiveWeight = this.enabled ? weight : 0;
+			return this.stopFading();
+		} // return the weight considering fading and .enabled
 
-			return buffergeometry;
 
+		getEffectiveWeight() {
+			return this._effectiveWeight;
 		}
 
-		function update( geometry ) {
-
-			var index = geometry.index;
-			var geometryAttributes = geometry.attributes;
+		fadeIn(duration) {
+			return this._scheduleFading(duration, 0, 1);
+		}
 
-			if ( index !== null ) {
+		fadeOut(duration) {
+			return this._scheduleFading(duration, 1, 0);
+		}
 
-				attributes.update( index, gl.ELEMENT_ARRAY_BUFFER );
+		crossFadeFrom(fadeOutAction, duration, warp) {
+			fadeOutAction.fadeOut(duration);
+			this.fadeIn(duration);
 
+			if (warp) {
+				const fadeInDuration = this._clip.duration,
+							fadeOutDuration = fadeOutAction._clip.duration,
+							startEndRatio = fadeOutDuration / fadeInDuration,
+							endStartRatio = fadeInDuration / fadeOutDuration;
+				fadeOutAction.warp(1.0, startEndRatio, duration);
+				this.warp(endStartRatio, 1.0, duration);
 			}
 
-			for ( var name in geometryAttributes ) {
-
-				attributes.update( geometryAttributes[ name ], gl.ARRAY_BUFFER );
-
-			}
+			return this;
+		}
 
-			// morph targets
+		crossFadeTo(fadeInAction, duration, warp) {
+			return fadeInAction.crossFadeFrom(this, duration, warp);
+		}
 
-			var morphAttributes = geometry.morphAttributes;
+		stopFading() {
+			const weightInterpolant = this._weightInterpolant;
 
-			for ( var name in morphAttributes ) {
+			if (weightInterpolant !== null) {
+				this._weightInterpolant = null;
 
-				var array = morphAttributes[ name ];
+				this._mixer._takeBackControlInterpolant(weightInterpolant);
+			}
 
-				for ( var i = 0, l = array.length; i < l; i ++ ) {
+			return this;
+		} // Time Scale Control
+		// set the time scale stopping any scheduled warping
+		// although .paused = true yields an effective time scale of zero, this
+		// method does *not* change .paused, because it would be confusing
 
-					attributes.update( array[ i ], gl.ARRAY_BUFFER );
 
-				}
+		setEffectiveTimeScale(timeScale) {
+			this.timeScale = timeScale;
+			this._effectiveTimeScale = this.paused ? 0 : timeScale;
+			return this.stopWarping();
+		} // return the time scale considering warping and .paused
 
-			}
 
+		getEffectiveTimeScale() {
+			return this._effectiveTimeScale;
 		}
 
-		function getWireframeAttribute( geometry ) {
-
-			var attribute = wireframeAttributes[ geometry.id ];
-
-			if ( attribute ) return attribute;
+		setDuration(duration) {
+			this.timeScale = this._clip.duration / duration;
+			return this.stopWarping();
+		}
 
-			var indices = [];
+		syncWith(action) {
+			this.time = action.time;
+			this.timeScale = action.timeScale;
+			return this.stopWarping();
+		}
 
-			var geometryIndex = geometry.index;
-			var geometryAttributes = geometry.attributes;
+		halt(duration) {
+			return this.warp(this._effectiveTimeScale, 0, duration);
+		}
 
-			// console.time( 'wireframe' );
+		warp(startTimeScale, endTimeScale, duration) {
+			const mixer = this._mixer,
+						now = mixer.time,
+						timeScale = this.timeScale;
+			let interpolant = this._timeScaleInterpolant;
 
-			if ( geometryIndex !== null ) {
+			if (interpolant === null) {
+				interpolant = mixer._lendControlInterpolant();
+				this._timeScaleInterpolant = interpolant;
+			}
 
-				var array = geometryIndex.array;
+			const times = interpolant.parameterPositions,
+						values = interpolant.sampleValues;
+			times[0] = now;
+			times[1] = now + duration;
+			values[0] = startTimeScale / timeScale;
+			values[1] = endTimeScale / timeScale;
+			return this;
+		}
 
-				for ( var i = 0, l = array.length; i < l; i += 3 ) {
+		stopWarping() {
+			const timeScaleInterpolant = this._timeScaleInterpolant;
 
-					var a = array[ i + 0 ];
-					var b = array[ i + 1 ];
-					var c = array[ i + 2 ];
+			if (timeScaleInterpolant !== null) {
+				this._timeScaleInterpolant = null;
 
-					indices.push( a, b, b, c, c, a );
+				this._mixer._takeBackControlInterpolant(timeScaleInterpolant);
+			}
 
-				}
+			return this;
+		} // Object Accessors
 
-			} else {
 
-				var array = geometryAttributes.position.array;
+		getMixer() {
+			return this._mixer;
+		}
 
-				for ( var i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {
+		getClip() {
+			return this._clip;
+		}
 
-					var a = i + 0;
-					var b = i + 1;
-					var c = i + 2;
+		getRoot() {
+			return this._localRoot || this._mixer._root;
+		} // Interna
 
-					indices.push( a, b, b, c, c, a );
 
-				}
+		_update(time, deltaTime, timeDirection, accuIndex) {
+			// called by the mixer
+			if (!this.enabled) {
+				// call ._updateWeight() to update ._effectiveWeight
+				this._updateWeight(time);
 
+				return;
 			}
 
-			// console.timeEnd( 'wireframe' );
+			const startTime = this._startTime;
 
-			attribute = new ( arrayMax( indices ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );
-
-			attributes.update( attribute, gl.ELEMENT_ARRAY_BUFFER );
+			if (startTime !== null) {
+				// check for scheduled start of action
+				const timeRunning = (time - startTime) * timeDirection;
 
-			wireframeAttributes[ geometry.id ] = attribute;
+				if (timeRunning < 0 || timeDirection === 0) {
+					return; // yet to come / don't decide when delta = 0
+				} // start
 
-			return attribute;
 
-		}
+				this._startTime = null; // unschedule
 
-		return {
+				deltaTime = timeDirection * timeRunning;
+			} // apply time scale and advance time
 
-			get: get,
-			update: update,
 
-			getWireframeAttribute: getWireframeAttribute
+			deltaTime *= this._updateTimeScale(time);
 
-		};
+			const clipTime = this._updateTime(deltaTime); // note: _updateTime may disable the action resulting in
+			// an effective weight of 0
 
-	}
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+			const weight = this._updateWeight(time);
 
-	function WebGLIndexedBufferRenderer( gl, extensions, info ) {
+			if (weight > 0) {
+				const interpolants = this._interpolants;
+				const propertyMixers = this._propertyBindings;
 
-		var mode;
+				switch (this.blendMode) {
+					case AdditiveAnimationBlendMode:
+						for (let j = 0, m = interpolants.length; j !== m; ++j) {
+							interpolants[j].evaluate(clipTime);
+							propertyMixers[j].accumulateAdditive(weight);
+						}
 
-		function setMode( value ) {
+						break;
 
-			mode = value;
+					case NormalAnimationBlendMode:
+					default:
+						for (let j = 0, m = interpolants.length; j !== m; ++j) {
+							interpolants[j].evaluate(clipTime);
+							propertyMixers[j].accumulate(accuIndex, weight);
+						}
 
+				}
+			}
 		}
 
-		var type, bytesPerElement;
+		_updateWeight(time) {
+			let weight = 0;
 
-		function setIndex( value ) {
-
-			type = value.type;
-			bytesPerElement = value.bytesPerElement;
-
-		}
+			if (this.enabled) {
+				weight = this.weight;
+				const interpolant = this._weightInterpolant;
 
-		function render( start, count ) {
+				if (interpolant !== null) {
+					const interpolantValue = interpolant.evaluate(time)[0];
+					weight *= interpolantValue;
 
-			gl.drawElements( mode, count, type, start * bytesPerElement );
+					if (time > interpolant.parameterPositions[1]) {
+						this.stopFading();
 
-			info.update( count, mode );
+						if (interpolantValue === 0) {
+							// faded out, disable
+							this.enabled = false;
+						}
+					}
+				}
+			}
 
+			this._effectiveWeight = weight;
+			return weight;
 		}
 
-		function renderInstances( geometry, start, count ) {
+		_updateTimeScale(time) {
+			let timeScale = 0;
 
-			var extension = extensions.get( 'ANGLE_instanced_arrays' );
+			if (!this.paused) {
+				timeScale = this.timeScale;
+				const interpolant = this._timeScaleInterpolant;
 
-			if ( extension === null ) {
+				if (interpolant !== null) {
+					const interpolantValue = interpolant.evaluate(time)[0];
+					timeScale *= interpolantValue;
 
-				console.error( 'THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
-				return;
+					if (time > interpolant.parameterPositions[1]) {
+						this.stopWarping();
 
+						if (timeScale === 0) {
+							// motion has halted, pause
+							this.paused = true;
+						} else {
+							// warp done - apply final time scale
+							this.timeScale = timeScale;
+						}
+					}
+				}
 			}
 
-			extension.drawElementsInstancedANGLE( mode, count, type, start * bytesPerElement, geometry.maxInstancedCount );
-
-			info.update( count, mode, geometry.maxInstancedCount );
-
+			this._effectiveTimeScale = timeScale;
+			return timeScale;
 		}
 
-		//
+		_updateTime(deltaTime) {
+			const duration = this._clip.duration;
+			const loop = this.loop;
+			let time = this.time + deltaTime;
+			let loopCount = this._loopCount;
+			const pingPong = loop === LoopPingPong;
 
-		this.setMode = setMode;
-		this.setIndex = setIndex;
-		this.render = render;
-		this.renderInstances = renderInstances;
+			if (deltaTime === 0) {
+				if (loopCount === -1) return time;
+				return pingPong && (loopCount & 1) === 1 ? duration - time : time;
+			}
 
-	}
+			if (loop === LoopOnce) {
+				if (loopCount === -1) {
+					// just started
+					this._loopCount = 0;
 
-	/**
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
+					this._setEndings(true, true, false);
+				}
 
-	function WebGLInfo( gl ) {
+				handle_stop: {
+					if (time >= duration) {
+						time = duration;
+					} else if (time < 0) {
+						time = 0;
+					} else {
+						this.time = time;
+						break handle_stop;
+					}
 
-		var memory = {
-			geometries: 0,
-			textures: 0
-		};
-
-		var render = {
-			frame: 0,
-			calls: 0,
-			triangles: 0,
-			points: 0,
-			lines: 0
-		};
-
-		function update( count, mode, instanceCount ) {
-
-			instanceCount = instanceCount || 1;
+					if (this.clampWhenFinished) this.paused = true;else this.enabled = false;
+					this.time = time;
 
-			render.calls ++;
+					this._mixer.dispatchEvent({
+						type: 'finished',
+						action: this,
+						direction: deltaTime < 0 ? -1 : 1
+					});
+				}
+			} else {
+				// repetitive Repeat or PingPong
+				if (loopCount === -1) {
+					// just started
+					if (deltaTime >= 0) {
+						loopCount = 0;
 
-			switch ( mode ) {
+						this._setEndings(true, this.repetitions === 0, pingPong);
+					} else {
+						// when looping in reverse direction, the initial
+						// transition through zero counts as a repetition,
+						// so leave loopCount at -1
+						this._setEndings(this.repetitions === 0, true, pingPong);
+					}
+				}
 
-				case gl.TRIANGLES:
-					render.triangles += instanceCount * ( count / 3 );
-					break;
+				if (time >= duration || time < 0) {
+					// wrap around
+					const loopDelta = Math.floor(time / duration); // signed
 
-				case gl.TRIANGLE_STRIP:
-				case gl.TRIANGLE_FAN:
-					render.triangles += instanceCount * ( count - 2 );
-					break;
+					time -= duration * loopDelta;
+					loopCount += Math.abs(loopDelta);
+					const pending = this.repetitions - loopCount;
 
-				case gl.LINES:
-					render.lines += instanceCount * ( count / 2 );
-					break;
+					if (pending <= 0) {
+						// have to stop (switch state, clamp time, fire event)
+						if (this.clampWhenFinished) this.paused = true;else this.enabled = false;
+						time = deltaTime > 0 ? duration : 0;
+						this.time = time;
 
-				case gl.LINE_STRIP:
-					render.lines += instanceCount * ( count - 1 );
-					break;
+						this._mixer.dispatchEvent({
+							type: 'finished',
+							action: this,
+							direction: deltaTime > 0 ? 1 : -1
+						});
+					} else {
+						// keep running
+						if (pending === 1) {
+							// entering the last round
+							const atStart = deltaTime < 0;
 
-				case gl.LINE_LOOP:
-					render.lines += instanceCount * count;
-					break;
+							this._setEndings(atStart, !atStart, pingPong);
+						} else {
+							this._setEndings(false, false, pingPong);
+						}
 
-				case gl.POINTS:
-					render.points += instanceCount * count;
-					break;
+						this._loopCount = loopCount;
+						this.time = time;
 
-				default:
-					console.error( 'THREE.WebGLInfo: Unknown draw mode:', mode );
-					break;
+						this._mixer.dispatchEvent({
+							type: 'loop',
+							action: this,
+							loopDelta: loopDelta
+						});
+					}
+				} else {
+					this.time = time;
+				}
 
+				if (pingPong && (loopCount & 1) === 1) {
+					// invert time for the "pong round"
+					return duration - time;
+				}
 			}
 
+			return time;
 		}
 
-		function reset() {
+		_setEndings(atStart, atEnd, pingPong) {
+			const settings = this._interpolantSettings;
 
-			render.frame ++;
-			render.calls = 0;
-			render.triangles = 0;
-			render.points = 0;
-			render.lines = 0;
+			if (pingPong) {
+				settings.endingStart = ZeroSlopeEnding;
+				settings.endingEnd = ZeroSlopeEnding;
+			} else {
+				// assuming for LoopOnce atStart == atEnd == true
+				if (atStart) {
+					settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;
+				} else {
+					settings.endingStart = WrapAroundEnding;
+				}
 
+				if (atEnd) {
+					settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;
+				} else {
+					settings.endingEnd = WrapAroundEnding;
+				}
+			}
 		}
 
-		return {
-			memory: memory,
-			render: render,
-			programs: null,
-			autoReset: true,
-			reset: reset,
-			update: update
-		};
-
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+		_scheduleFading(duration, weightNow, weightThen) {
+			const mixer = this._mixer,
+						now = mixer.time;
+			let interpolant = this._weightInterpolant;
 
-	function absNumericalSort( a, b ) {
+			if (interpolant === null) {
+				interpolant = mixer._lendControlInterpolant();
+				this._weightInterpolant = interpolant;
+			}
 
-		return Math.abs( b[ 1 ] ) - Math.abs( a[ 1 ] );
+			const times = interpolant.parameterPositions,
+						values = interpolant.sampleValues;
+			times[0] = now;
+			values[0] = weightNow;
+			times[1] = now + duration;
+			values[1] = weightThen;
+			return this;
+		}
 
 	}
 
-	function WebGLMorphtargets( gl ) {
+	class AnimationMixer extends EventDispatcher {
+		constructor(root) {
+			super();
+			this._root = root;
 
-		var influencesList = {};
-		var morphInfluences = new Float32Array( 8 );
+			this._initMemoryManager();
 
-		function update( object, geometry, material, program ) {
+			this._accuIndex = 0;
+			this.time = 0;
+			this.timeScale = 1.0;
+		}
 
-			var objectInfluences = object.morphTargetInfluences;
+		_bindAction(action, prototypeAction) {
+			const root = action._localRoot || this._root,
+						tracks = action._clip.tracks,
+						nTracks = tracks.length,
+						bindings = action._propertyBindings,
+						interpolants = action._interpolants,
+						rootUuid = root.uuid,
+						bindingsByRoot = this._bindingsByRootAndName;
+			let bindingsByName = bindingsByRoot[rootUuid];
 
-			var length = objectInfluences.length;
+			if (bindingsByName === undefined) {
+				bindingsByName = {};
+				bindingsByRoot[rootUuid] = bindingsByName;
+			}
 
-			var influences = influencesList[ geometry.id ];
+			for (let i = 0; i !== nTracks; ++i) {
+				const track = tracks[i],
+							trackName = track.name;
+				let binding = bindingsByName[trackName];
 
-			if ( influences === undefined ) {
+				if (binding !== undefined) {
+					bindings[i] = binding;
+				} else {
+					binding = bindings[i];
 
-				// initialise list
+					if (binding !== undefined) {
+						// existing binding, make sure the cache knows
+						if (binding._cacheIndex === null) {
+							++binding.referenceCount;
 
-				influences = [];
+							this._addInactiveBinding(binding, rootUuid, trackName);
+						}
 
-				for ( var i = 0; i < length; i ++ ) {
+						continue;
+					}
 
-					influences[ i ] = [ i, 0 ];
+					const path = prototypeAction && prototypeAction._propertyBindings[i].binding.parsedPath;
+					binding = new PropertyMixer(PropertyBinding.create(root, trackName, path), track.ValueTypeName, track.getValueSize());
+					++binding.referenceCount;
 
-				}
+					this._addInactiveBinding(binding, rootUuid, trackName);
 
-				influencesList[ geometry.id ] = influences;
+					bindings[i] = binding;
+				}
 
+				interpolants[i].resultBuffer = binding.buffer;
 			}
+		}
 
-			var morphTargets = material.morphTargets && geometry.morphAttributes.position;
-			var morphNormals = material.morphNormals && geometry.morphAttributes.normal;
+		_activateAction(action) {
+			if (!this._isActiveAction(action)) {
+				if (action._cacheIndex === null) {
+					// this action has been forgotten by the cache, but the user
+					// appears to be still using it -> rebind
+					const rootUuid = (action._localRoot || this._root).uuid,
+								clipUuid = action._clip.uuid,
+								actionsForClip = this._actionsByClip[clipUuid];
 
-			// Remove current morphAttributes
+					this._bindAction(action, actionsForClip && actionsForClip.knownActions[0]);
 
-			for ( var i = 0; i < length; i ++ ) {
+					this._addInactiveAction(action, clipUuid, rootUuid);
+				}
 
-				var influence = influences[ i ];
+				const bindings = action._propertyBindings; // increment reference counts / sort out state
 
-				if ( influence[ 1 ] !== 0 ) {
+				for (let i = 0, n = bindings.length; i !== n; ++i) {
+					const binding = bindings[i];
 
-					if ( morphTargets ) geometry.removeAttribute( 'morphTarget' + i );
-					if ( morphNormals ) geometry.removeAttribute( 'morphNormal' + i );
+					if (binding.useCount++ === 0) {
+						this._lendBinding(binding);
 
+						binding.saveOriginalState();
+					}
 				}
 
+				this._lendAction(action);
 			}
+		}
 
-			// Collect influences
+		_deactivateAction(action) {
+			if (this._isActiveAction(action)) {
+				const bindings = action._propertyBindings; // decrement reference counts / sort out state
 
-			for ( var i = 0; i < length; i ++ ) {
+				for (let i = 0, n = bindings.length; i !== n; ++i) {
+					const binding = bindings[i];
 
-				var influence = influences[ i ];
+					if (--binding.useCount === 0) {
+						binding.restoreOriginalState();
 
-				influence[ 0 ] = i;
-				influence[ 1 ] = objectInfluences[ i ];
+						this._takeBackBinding(binding);
+					}
+				}
 
+				this._takeBackAction(action);
 			}
+		} // Memory manager
+
 
-			influences.sort( absNumericalSort );
+		_initMemoryManager() {
+			this._actions = []; // 'nActiveActions' followed by inactive ones
+
+			this._nActiveActions = 0;
+			this._actionsByClip = {}; // inside:
+			// {
+			// 	knownActions: Array< AnimationAction > - used as prototypes
+			// 	actionByRoot: AnimationAction - lookup
+			// }
 
-			// Add morphAttributes
+			this._bindings = []; // 'nActiveBindings' followed by inactive ones
 
-			for ( var i = 0; i < 8; i ++ ) {
+			this._nActiveBindings = 0;
+			this._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >
 
-				var influence = influences[ i ];
+			this._controlInterpolants = []; // same game as above
 
-				if ( influence ) {
+			this._nActiveControlInterpolants = 0;
+			const scope = this;
+			this.stats = {
+				actions: {
+					get total() {
+						return scope._actions.length;
+					},
 
-					var index = influence[ 0 ];
-					var value = influence[ 1 ];
+					get inUse() {
+						return scope._nActiveActions;
+					}
 
-					if ( value ) {
+				},
+				bindings: {
+					get total() {
+						return scope._bindings.length;
+					},
 
-						if ( morphTargets ) geometry.addAttribute( 'morphTarget' + i, morphTargets[ index ] );
-						if ( morphNormals ) geometry.addAttribute( 'morphNormal' + i, morphNormals[ index ] );
+					get inUse() {
+						return scope._nActiveBindings;
+					}
 
-						morphInfluences[ i ] = value;
-						continue;
+				},
+				controlInterpolants: {
+					get total() {
+						return scope._controlInterpolants.length;
+					},
 
+					get inUse() {
+						return scope._nActiveControlInterpolants;
 					}
 
 				}
+			};
+		} // Memory management for AnimationAction objects
+
+
+		_isActiveAction(action) {
+			const index = action._cacheIndex;
+			return index !== null && index < this._nActiveActions;
+		}
+
+		_addInactiveAction(action, clipUuid, rootUuid) {
+			const actions = this._actions,
+						actionsByClip = this._actionsByClip;
+			let actionsForClip = actionsByClip[clipUuid];
+
+			if (actionsForClip === undefined) {
+				actionsForClip = {
+					knownActions: [action],
+					actionByRoot: {}
+				};
+				action._byClipCacheIndex = 0;
+				actionsByClip[clipUuid] = actionsForClip;
+			} else {
+				const knownActions = actionsForClip.knownActions;
+				action._byClipCacheIndex = knownActions.length;
+				knownActions.push(action);
+			}
 
-				morphInfluences[ i ] = 0;
+			action._cacheIndex = actions.length;
+			actions.push(action);
+			actionsForClip.actionByRoot[rootUuid] = action;
+		}
+
+		_removeInactiveAction(action) {
+			const actions = this._actions,
+						lastInactiveAction = actions[actions.length - 1],
+						cacheIndex = action._cacheIndex;
+			lastInactiveAction._cacheIndex = cacheIndex;
+			actions[cacheIndex] = lastInactiveAction;
+			actions.pop();
+			action._cacheIndex = null;
+			const clipUuid = action._clip.uuid,
+						actionsByClip = this._actionsByClip,
+						actionsForClip = actionsByClip[clipUuid],
+						knownActionsForClip = actionsForClip.knownActions,
+						lastKnownAction = knownActionsForClip[knownActionsForClip.length - 1],
+						byClipCacheIndex = action._byClipCacheIndex;
+			lastKnownAction._byClipCacheIndex = byClipCacheIndex;
+			knownActionsForClip[byClipCacheIndex] = lastKnownAction;
+			knownActionsForClip.pop();
+			action._byClipCacheIndex = null;
+			const actionByRoot = actionsForClip.actionByRoot,
+						rootUuid = (action._localRoot || this._root).uuid;
+			delete actionByRoot[rootUuid];
 
+			if (knownActionsForClip.length === 0) {
+				delete actionsByClip[clipUuid];
 			}
 
-			program.getUniforms().setValue( gl, 'morphTargetInfluences', morphInfluences );
+			this._removeInactiveBindingsForAction(action);
+		}
+
+		_removeInactiveBindingsForAction(action) {
+			const bindings = action._propertyBindings;
+
+			for (let i = 0, n = bindings.length; i !== n; ++i) {
+				const binding = bindings[i];
 
+				if (--binding.referenceCount === 0) {
+					this._removeInactiveBinding(binding);
+				}
+			}
 		}
 
-		return {
+		_lendAction(action) {
+			// [ active actions |	inactive actions	]
+			// [	active actions >| inactive actions ]
+			//								 s				a
+			//									<-swap->
+			//								 a				s
+			const actions = this._actions,
+						prevIndex = action._cacheIndex,
+						lastActiveIndex = this._nActiveActions++,
+						firstInactiveAction = actions[lastActiveIndex];
+			action._cacheIndex = lastActiveIndex;
+			actions[lastActiveIndex] = action;
+			firstInactiveAction._cacheIndex = prevIndex;
+			actions[prevIndex] = firstInactiveAction;
+		}
+
+		_takeBackAction(action) {
+			// [	active actions	| inactive actions ]
+			// [ active actions |< inactive actions	]
+			//				a				s
+			//				 <-swap->
+			//				s				a
+			const actions = this._actions,
+						prevIndex = action._cacheIndex,
+						firstInactiveIndex = --this._nActiveActions,
+						lastActiveAction = actions[firstInactiveIndex];
+			action._cacheIndex = firstInactiveIndex;
+			actions[firstInactiveIndex] = action;
+			lastActiveAction._cacheIndex = prevIndex;
+			actions[prevIndex] = lastActiveAction;
+		} // Memory management for PropertyMixer objects
 
-			update: update
 
-		};
+		_addInactiveBinding(binding, rootUuid, trackName) {
+			const bindingsByRoot = this._bindingsByRootAndName,
+						bindings = this._bindings;
+			let bindingByName = bindingsByRoot[rootUuid];
 
-	}
+			if (bindingByName === undefined) {
+				bindingByName = {};
+				bindingsByRoot[rootUuid] = bindingByName;
+			}
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+			bindingByName[trackName] = binding;
+			binding._cacheIndex = bindings.length;
+			bindings.push(binding);
+		}
+
+		_removeInactiveBinding(binding) {
+			const bindings = this._bindings,
+						propBinding = binding.binding,
+						rootUuid = propBinding.rootNode.uuid,
+						trackName = propBinding.path,
+						bindingsByRoot = this._bindingsByRootAndName,
+						bindingByName = bindingsByRoot[rootUuid],
+						lastInactiveBinding = bindings[bindings.length - 1],
+						cacheIndex = binding._cacheIndex;
+			lastInactiveBinding._cacheIndex = cacheIndex;
+			bindings[cacheIndex] = lastInactiveBinding;
+			bindings.pop();
+			delete bindingByName[trackName];
+
+			if (Object.keys(bindingByName).length === 0) {
+				delete bindingsByRoot[rootUuid];
+			}
+		}
 
-	function WebGLObjects( geometries, info ) {
+		_lendBinding(binding) {
+			const bindings = this._bindings,
+						prevIndex = binding._cacheIndex,
+						lastActiveIndex = this._nActiveBindings++,
+						firstInactiveBinding = bindings[lastActiveIndex];
+			binding._cacheIndex = lastActiveIndex;
+			bindings[lastActiveIndex] = binding;
+			firstInactiveBinding._cacheIndex = prevIndex;
+			bindings[prevIndex] = firstInactiveBinding;
+		}
 
-		var updateList = {};
+		_takeBackBinding(binding) {
+			const bindings = this._bindings,
+						prevIndex = binding._cacheIndex,
+						firstInactiveIndex = --this._nActiveBindings,
+						lastActiveBinding = bindings[firstInactiveIndex];
+			binding._cacheIndex = firstInactiveIndex;
+			bindings[firstInactiveIndex] = binding;
+			lastActiveBinding._cacheIndex = prevIndex;
+			bindings[prevIndex] = lastActiveBinding;
+		} // Memory management of Interpolants for weight and time scale
 
-		function update( object ) {
 
-			var frame = info.render.frame;
+		_lendControlInterpolant() {
+			const interpolants = this._controlInterpolants,
+						lastActiveIndex = this._nActiveControlInterpolants++;
+			let interpolant = interpolants[lastActiveIndex];
 
-			var geometry = object.geometry;
-			var buffergeometry = geometries.get( object, geometry );
+			if (interpolant === undefined) {
+				interpolant = new LinearInterpolant(new Float32Array(2), new Float32Array(2), 1, this._controlInterpolantsResultBuffer);
+				interpolant.__cacheIndex = lastActiveIndex;
+				interpolants[lastActiveIndex] = interpolant;
+			}
 
-			// Update once per frame
+			return interpolant;
+		}
 
-			if ( updateList[ buffergeometry.id ] !== frame ) {
+		_takeBackControlInterpolant(interpolant) {
+			const interpolants = this._controlInterpolants,
+						prevIndex = interpolant.__cacheIndex,
+						firstInactiveIndex = --this._nActiveControlInterpolants,
+						lastActiveInterpolant = interpolants[firstInactiveIndex];
+			interpolant.__cacheIndex = firstInactiveIndex;
+			interpolants[firstInactiveIndex] = interpolant;
+			lastActiveInterpolant.__cacheIndex = prevIndex;
+			interpolants[prevIndex] = lastActiveInterpolant;
+		} // return an action for a clip optionally using a custom root target
+		// object (this method allocates a lot of dynamic memory in case a
+		// previously unknown clip/root combination is specified)
 
-				if ( geometry.isGeometry ) {
 
-					buffergeometry.updateFromObject( object );
+		clipAction(clip, optionalRoot, blendMode) {
+			const root = optionalRoot || this._root,
+						rootUuid = root.uuid;
+			let clipObject = typeof clip === 'string' ? AnimationClip.findByName(root, clip) : clip;
+			const clipUuid = clipObject !== null ? clipObject.uuid : clip;
+			const actionsForClip = this._actionsByClip[clipUuid];
+			let prototypeAction = null;
 
+			if (blendMode === undefined) {
+				if (clipObject !== null) {
+					blendMode = clipObject.blendMode;
+				} else {
+					blendMode = NormalAnimationBlendMode;
 				}
+			}
+
+			if (actionsForClip !== undefined) {
+				const existingAction = actionsForClip.actionByRoot[rootUuid];
 
-				geometries.update( buffergeometry );
+				if (existingAction !== undefined && existingAction.blendMode === blendMode) {
+					return existingAction;
+				} // we know the clip, so we don't have to parse all
+				// the bindings again but can just copy
+
+
+				prototypeAction = actionsForClip.knownActions[0]; // also, take the clip from the prototype action
+
+				if (clipObject === null) clipObject = prototypeAction._clip;
+			} // clip must be known when specified via string
+
+
+			if (clipObject === null) return null; // allocate all resources required to run it
+
+			const newAction = new AnimationAction(this, clipObject, optionalRoot, blendMode);
 
-				updateList[ buffergeometry.id ] = frame;
+			this._bindAction(newAction, prototypeAction); // and make the action known to the memory manager
 
+
+			this._addInactiveAction(newAction, clipUuid, rootUuid);
+
+			return newAction;
+		} // get an existing action
+
+
+		existingAction(clip, optionalRoot) {
+			const root = optionalRoot || this._root,
+						rootUuid = root.uuid,
+						clipObject = typeof clip === 'string' ? AnimationClip.findByName(root, clip) : clip,
+						clipUuid = clipObject ? clipObject.uuid : clip,
+						actionsForClip = this._actionsByClip[clipUuid];
+
+			if (actionsForClip !== undefined) {
+				return actionsForClip.actionByRoot[rootUuid] || null;
 			}
 
-			return buffergeometry;
+			return null;
+		} // deactivates all previously scheduled actions
 
-		}
 
-		function dispose() {
+		stopAllAction() {
+			const actions = this._actions,
+						nActions = this._nActiveActions;
 
-			updateList = {};
+			for (let i = nActions - 1; i >= 0; --i) {
+				actions[i].stop();
+			}
 
-		}
+			return this;
+		} // advance the time and update apply the animation
 
-		return {
 
-			update: update,
-			dispose: dispose
+		update(deltaTime) {
+			deltaTime *= this.timeScale;
+			const actions = this._actions,
+						nActions = this._nActiveActions,
+						time = this.time += deltaTime,
+						timeDirection = Math.sign(deltaTime),
+						accuIndex = this._accuIndex ^= 1; // run active actions
 
-		};
+			for (let i = 0; i !== nActions; ++i) {
+				const action = actions[i];
 
-	}
+				action._update(time, deltaTime, timeDirection, accuIndex);
+			} // update scene graph
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
 
-	function CubeTexture( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {
+			const bindings = this._bindings,
+						nBindings = this._nActiveBindings;
 
-		images = images !== undefined ? images : [];
-		mapping = mapping !== undefined ? mapping : CubeReflectionMapping;
+			for (let i = 0; i !== nBindings; ++i) {
+				bindings[i].apply(accuIndex);
+			}
 
-		Texture.call( this, images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );
+			return this;
+		} // Allows you to seek to a specific time in an animation.
 
-		this.flipY = false;
 
-	}
+		setTime(timeInSeconds) {
+			this.time = 0; // Zero out time attribute for AnimationMixer object;
 
-	CubeTexture.prototype = Object.create( Texture.prototype );
-	CubeTexture.prototype.constructor = CubeTexture;
+			for (let i = 0; i < this._actions.length; i++) {
+				this._actions[i].time = 0; // Zero out time attribute for all associated AnimationAction objects.
+			}
 
-	CubeTexture.prototype.isCubeTexture = true;
+			return this.update(timeInSeconds); // Update used to set exact time. Returns "this" AnimationMixer object.
+		} // return this mixer's root target object
 
-	Object.defineProperty( CubeTexture.prototype, 'images', {
 
-		get: function () {
+		getRoot() {
+			return this._root;
+		} // free all resources specific to a particular clip
 
-			return this.image;
 
-		},
+		uncacheClip(clip) {
+			const actions = this._actions,
+						clipUuid = clip.uuid,
+						actionsByClip = this._actionsByClip,
+						actionsForClip = actionsByClip[clipUuid];
 
-		set: function ( value ) {
+			if (actionsForClip !== undefined) {
+				// note: just calling _removeInactiveAction would mess up the
+				// iteration state and also require updating the state we can
+				// just throw away
+				const actionsToRemove = actionsForClip.knownActions;
 
-			this.image = value;
+				for (let i = 0, n = actionsToRemove.length; i !== n; ++i) {
+					const action = actionsToRemove[i];
 
-		}
+					this._deactivateAction(action);
 
-	} );
+					const cacheIndex = action._cacheIndex,
+								lastInactiveAction = actions[actions.length - 1];
+					action._cacheIndex = null;
+					action._byClipCacheIndex = null;
+					lastInactiveAction._cacheIndex = cacheIndex;
+					actions[cacheIndex] = lastInactiveAction;
+					actions.pop();
 
-	/**
-	 * @author tschw
-	 *
-	 * Uniforms of a program.
-	 * Those form a tree structure with a special top-level container for the root,
-	 * which you get by calling 'new WebGLUniforms( gl, program, renderer )'.
-	 *
-	 *
-	 * Properties of inner nodes including the top-level container:
-	 *
-	 * .seq - array of nested uniforms
-	 * .map - nested uniforms by name
-	 *
-	 *
-	 * Methods of all nodes except the top-level container:
-	 *
-	 * .setValue( gl, value, [renderer] )
-	 *
-	 * 		uploads a uniform value(s)
-	 *  	the 'renderer' parameter is needed for sampler uniforms
-	 *
-	 *
-	 * Static methods of the top-level container (renderer factorizations):
-	 *
-	 * .upload( gl, seq, values, renderer )
-	 *
-	 * 		sets uniforms in 'seq' to 'values[id].value'
-	 *
-	 * .seqWithValue( seq, values ) : filteredSeq
-	 *
-	 * 		filters 'seq' entries with corresponding entry in values
-	 *
-	 *
-	 * Methods of the top-level container (renderer factorizations):
-	 *
-	 * .setValue( gl, name, value )
-	 *
-	 * 		sets uniform with  name 'name' to 'value'
-	 *
-	 * .set( gl, obj, prop )
-	 *
-	 * 		sets uniform from object and property with same name than uniform
-	 *
-	 * .setOptional( gl, obj, prop )
-	 *
-	 * 		like .set for an optional property of the object
-	 *
-	 */
-
-	var emptyTexture = new Texture();
-	var emptyCubeTexture = new CubeTexture();
+					this._removeInactiveBindingsForAction(action);
+				}
 
-	// --- Base for inner nodes (including the root) ---
+				delete actionsByClip[clipUuid];
+			}
+		} // free all resources specific to a particular root target object
 
-	function UniformContainer() {
 
-		this.seq = [];
-		this.map = {};
+		uncacheRoot(root) {
+			const rootUuid = root.uuid,
+						actionsByClip = this._actionsByClip;
 
-	}
+			for (const clipUuid in actionsByClip) {
+				const actionByRoot = actionsByClip[clipUuid].actionByRoot,
+							action = actionByRoot[rootUuid];
 
-	// --- Utilities ---
+				if (action !== undefined) {
+					this._deactivateAction(action);
 
-	// Array Caches (provide typed arrays for temporary by size)
+					this._removeInactiveAction(action);
+				}
+			}
 
-	var arrayCacheF32 = [];
-	var arrayCacheI32 = [];
+			const bindingsByRoot = this._bindingsByRootAndName,
+						bindingByName = bindingsByRoot[rootUuid];
 
-	// Float32Array caches used for uploading Matrix uniforms
+			if (bindingByName !== undefined) {
+				for (const trackName in bindingByName) {
+					const binding = bindingByName[trackName];
+					binding.restoreOriginalState();
 
-	var mat4array = new Float32Array( 16 );
-	var mat3array = new Float32Array( 9 );
+					this._removeInactiveBinding(binding);
+				}
+			}
+		} // remove a targeted clip from the cache
 
-	// Flattening for arrays of vectors and matrices
 
-	function flatten( array, nBlocks, blockSize ) {
+		uncacheAction(clip, optionalRoot) {
+			const action = this.existingAction(clip, optionalRoot);
 
-		var firstElem = array[ 0 ];
+			if (action !== null) {
+				this._deactivateAction(action);
 
-		if ( firstElem <= 0 || firstElem > 0 ) return array;
-		// unoptimized: ! isNaN( firstElem )
-		// see http://jacksondunstan.com/articles/983
+				this._removeInactiveAction(action);
+			}
+		}
 
-		var n = nBlocks * blockSize,
-			r = arrayCacheF32[ n ];
+	}
 
-		if ( r === undefined ) {
+	AnimationMixer.prototype._controlInterpolantsResultBuffer = new Float32Array(1);
 
-			r = new Float32Array( n );
-			arrayCacheF32[ n ] = r;
+	class Uniform {
+		constructor(value) {
+			if (typeof value === 'string') {
+				console.warn('THREE.Uniform: Type parameter is no longer needed.');
+				value = arguments[1];
+			}
 
+			this.value = value;
 		}
 
-		if ( nBlocks !== 0 ) {
-
-			firstElem.toArray( r, 0 );
+		clone() {
+			return new Uniform(this.value.clone === undefined ? this.value : this.value.clone());
+		}
 
-			for ( var i = 1, offset = 0; i !== nBlocks; ++ i ) {
+	}
 
-				offset += blockSize;
-				array[ i ].toArray( r, offset );
+	class InstancedInterleavedBuffer extends InterleavedBuffer {
+		constructor(array, stride, meshPerAttribute = 1) {
+			super(array, stride);
+			this.meshPerAttribute = meshPerAttribute;
+		}
 
-			}
+		copy(source) {
+			super.copy(source);
+			this.meshPerAttribute = source.meshPerAttribute;
+			return this;
+		}
 
+		clone(data) {
+			const ib = super.clone(data);
+			ib.meshPerAttribute = this.meshPerAttribute;
+			return ib;
 		}
 
-		return r;
+		toJSON(data) {
+			const json = super.toJSON(data);
+			json.isInstancedInterleavedBuffer = true;
+			json.meshPerAttribute = this.meshPerAttribute;
+			return json;
+		}
 
 	}
 
-	// Texture unit allocation
+	InstancedInterleavedBuffer.prototype.isInstancedInterleavedBuffer = true;
 
-	function allocTexUnits( renderer, n ) {
-
-		var r = arrayCacheI32[ n ];
+	class GLBufferAttribute {
+		constructor(buffer, type, itemSize, elementSize, count) {
+			this.buffer = buffer;
+			this.type = type;
+			this.itemSize = itemSize;
+			this.elementSize = elementSize;
+			this.count = count;
+			this.version = 0;
+		}
 
-		if ( r === undefined ) {
+		set needsUpdate(value) {
+			if (value === true) this.version++;
+		}
 
-			r = new Int32Array( n );
-			arrayCacheI32[ n ] = r;
+		setBuffer(buffer) {
+			this.buffer = buffer;
+			return this;
+		}
 
+		setType(type, elementSize) {
+			this.type = type;
+			this.elementSize = elementSize;
+			return this;
 		}
 
-		for ( var i = 0; i !== n; ++ i )
-			r[ i ] = renderer.allocTextureUnit();
+		setItemSize(itemSize) {
+			this.itemSize = itemSize;
+			return this;
+		}
 
-		return r;
+		setCount(count) {
+			this.count = count;
+			return this;
+		}
 
 	}
 
-	// --- Setters ---
+	GLBufferAttribute.prototype.isGLBufferAttribute = true;
 
-	// Note: Defining these methods externally, because they come in a bunch
-	// and this way their names minify.
+	class Raycaster {
+		constructor(origin, direction, near = 0, far = Infinity) {
+			this.ray = new Ray(origin, direction); // direction is assumed to be normalized (for accurate distance calculations)
 
-	// Single scalar
+			this.near = near;
+			this.far = far;
+			this.camera = null;
+			this.layers = new Layers();
+			this.params = {
+				Mesh: {},
+				Line: {
+					threshold: 1
+				},
+				LOD: {},
+				Points: {
+					threshold: 1
+				},
+				Sprite: {}
+			};
+		}
 
-	function setValue1f( gl, v ) {
+		set(origin, direction) {
+			// direction is assumed to be normalized (for accurate distance calculations)
+			this.ray.set(origin, direction);
+		}
 
-		gl.uniform1f( this.addr, v );
+		setFromCamera(coords, camera) {
+			if (camera && camera.isPerspectiveCamera) {
+				this.ray.origin.setFromMatrixPosition(camera.matrixWorld);
+				this.ray.direction.set(coords.x, coords.y, 0.5).unproject(camera).sub(this.ray.origin).normalize();
+				this.camera = camera;
+			} else if (camera && camera.isOrthographicCamera) {
+				this.ray.origin.set(coords.x, coords.y, (camera.near + camera.far) / (camera.near - camera.far)).unproject(camera); // set origin in plane of camera
 
-	}
+				this.ray.direction.set(0, 0, -1).transformDirection(camera.matrixWorld);
+				this.camera = camera;
+			} else {
+				console.error('THREE.Raycaster: Unsupported camera type: ' + camera.type);
+			}
+		}
 
-	function setValue1i( gl, v ) {
+		intersectObject(object, recursive = false, intersects = []) {
+			intersectObject(object, this, intersects, recursive);
+			intersects.sort(ascSort);
+			return intersects;
+		}
+
+		intersectObjects(objects, recursive = false, intersects = []) {
+			for (let i = 0, l = objects.length; i < l; i++) {
+				intersectObject(objects[i], this, intersects, recursive);
+			}
 
-		gl.uniform1i( this.addr, v );
+			intersects.sort(ascSort);
+			return intersects;
+		}
+
+	}
 
+	function ascSort(a, b) {
+		return a.distance - b.distance;
 	}
 
-	// Single float vector (from flat array or THREE.VectorN)
+	function intersectObject(object, raycaster, intersects, recursive) {
+		if (object.layers.test(raycaster.layers)) {
+			object.raycast(raycaster, intersects);
+		}
 
-	function setValue2fv( gl, v ) {
+		if (recursive === true) {
+			const children = object.children;
 
-		if ( v.x === undefined ) {
+			for (let i = 0, l = children.length; i < l; i++) {
+				intersectObject(children[i], raycaster, intersects, true);
+			}
+		}
+	}
 
-			gl.uniform2fv( this.addr, v );
+	/**
+	 * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system
+	 *
+	 * The polar angle (phi) is measured from the positive y-axis. The positive y-axis is up.
+	 * The azimuthal angle (theta) is measured from the positive z-axis.
+	 */
 
-		} else {
+	class Spherical {
+		constructor(radius = 1, phi = 0, theta = 0) {
+			this.radius = radius;
+			this.phi = phi; // polar angle
 
-			gl.uniform2f( this.addr, v.x, v.y );
+			this.theta = theta; // azimuthal angle
 
+			return this;
 		}
 
-	}
+		set(radius, phi, theta) {
+			this.radius = radius;
+			this.phi = phi;
+			this.theta = theta;
+			return this;
+		}
 
-	function setValue3fv( gl, v ) {
+		copy(other) {
+			this.radius = other.radius;
+			this.phi = other.phi;
+			this.theta = other.theta;
+			return this;
+		} // restrict phi to be betwee EPS and PI-EPS
 
-		if ( v.x !== undefined ) {
 
-			gl.uniform3f( this.addr, v.x, v.y, v.z );
+		makeSafe() {
+			const EPS = 0.000001;
+			this.phi = Math.max(EPS, Math.min(Math.PI - EPS, this.phi));
+			return this;
+		}
 
-		} else if ( v.r !== undefined ) {
+		setFromVector3(v) {
+			return this.setFromCartesianCoords(v.x, v.y, v.z);
+		}
 
-			gl.uniform3f( this.addr, v.r, v.g, v.b );
+		setFromCartesianCoords(x, y, z) {
+			this.radius = Math.sqrt(x * x + y * y + z * z);
 
-		} else {
+			if (this.radius === 0) {
+				this.theta = 0;
+				this.phi = 0;
+			} else {
+				this.theta = Math.atan2(x, z);
+				this.phi = Math.acos(clamp(y / this.radius, -1, 1));
+			}
 
-			gl.uniform3fv( this.addr, v );
+			return this;
+		}
 
+		clone() {
+			return new this.constructor().copy(this);
 		}
 
 	}
 
-	function setValue4fv( gl, v ) {
-
-		if ( v.x === undefined ) {
+	/**
+	 * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system
+	 */
+	class Cylindrical {
+		constructor(radius = 1, theta = 0, y = 0) {
+			this.radius = radius; // distance from the origin to a point in the x-z plane
 
-			gl.uniform4fv( this.addr, v );
+			this.theta = theta; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis
 
-		} else {
+			this.y = y; // height above the x-z plane
 
-			 gl.uniform4f( this.addr, v.x, v.y, v.z, v.w );
+			return this;
+		}
 
+		set(radius, theta, y) {
+			this.radius = radius;
+			this.theta = theta;
+			this.y = y;
+			return this;
 		}
 
-	}
+		copy(other) {
+			this.radius = other.radius;
+			this.theta = other.theta;
+			this.y = other.y;
+			return this;
+		}
 
-	// Single matrix (from flat array or MatrixN)
+		setFromVector3(v) {
+			return this.setFromCartesianCoords(v.x, v.y, v.z);
+		}
 
-	function setValue2fm( gl, v ) {
+		setFromCartesianCoords(x, y, z) {
+			this.radius = Math.sqrt(x * x + z * z);
+			this.theta = Math.atan2(x, z);
+			this.y = y;
+			return this;
+		}
 
-		gl.uniformMatrix2fv( this.addr, false, v.elements || v );
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
 	}
 
-	function setValue3fm( gl, v ) {
+	const _vector$4 = /*@__PURE__*/new Vector2();
 
-		if ( v.elements === undefined ) {
+	class Box2 {
+		constructor(min = new Vector2(+Infinity, +Infinity), max = new Vector2(-Infinity, -Infinity)) {
+			this.min = min;
+			this.max = max;
+		}
 
-			gl.uniformMatrix3fv( this.addr, false, v );
+		set(min, max) {
+			this.min.copy(min);
+			this.max.copy(max);
+			return this;
+		}
 
-		} else {
+		setFromPoints(points) {
+			this.makeEmpty();
 
-			mat3array.set( v.elements );
-			gl.uniformMatrix3fv( this.addr, false, mat3array );
+			for (let i = 0, il = points.length; i < il; i++) {
+				this.expandByPoint(points[i]);
+			}
 
+			return this;
 		}
 
-	}
-
-	function setValue4fm( gl, v ) {
-
-		if ( v.elements === undefined ) {
+		setFromCenterAndSize(center, size) {
+			const halfSize = _vector$4.copy(size).multiplyScalar(0.5);
 
-			gl.uniformMatrix4fv( this.addr, false, v );
+			this.min.copy(center).sub(halfSize);
+			this.max.copy(center).add(halfSize);
+			return this;
+		}
 
-		} else {
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
-			mat4array.set( v.elements );
-			gl.uniformMatrix4fv( this.addr, false, mat4array );
+		copy(box) {
+			this.min.copy(box.min);
+			this.max.copy(box.max);
+			return this;
+		}
 
+		makeEmpty() {
+			this.min.x = this.min.y = +Infinity;
+			this.max.x = this.max.y = -Infinity;
+			return this;
 		}
 
-	}
+		isEmpty() {
+			// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
+			return this.max.x < this.min.x || this.max.y < this.min.y;
+		}
 
-	// Single texture (2D / Cube)
+		getCenter(target) {
+			return this.isEmpty() ? target.set(0, 0) : target.addVectors(this.min, this.max).multiplyScalar(0.5);
+		}
 
-	function setValueT1( gl, v, renderer ) {
+		getSize(target) {
+			return this.isEmpty() ? target.set(0, 0) : target.subVectors(this.max, this.min);
+		}
 
-		var unit = renderer.allocTextureUnit();
-		gl.uniform1i( this.addr, unit );
-		renderer.setTexture2D( v || emptyTexture, unit );
+		expandByPoint(point) {
+			this.min.min(point);
+			this.max.max(point);
+			return this;
+		}
 
-	}
+		expandByVector(vector) {
+			this.min.sub(vector);
+			this.max.add(vector);
+			return this;
+		}
 
-	function setValueT6( gl, v, renderer ) {
+		expandByScalar(scalar) {
+			this.min.addScalar(-scalar);
+			this.max.addScalar(scalar);
+			return this;
+		}
 
-		var unit = renderer.allocTextureUnit();
-		gl.uniform1i( this.addr, unit );
-		renderer.setTextureCube( v || emptyCubeTexture, unit );
+		containsPoint(point) {
+			return point.x < this.min.x || point.x > this.max.x || point.y < this.min.y || point.y > this.max.y ? false : true;
+		}
 
-	}
+		containsBox(box) {
+			return this.min.x <= box.min.x && box.max.x <= this.max.x && this.min.y <= box.min.y && box.max.y <= this.max.y;
+		}
 
-	// Integer / Boolean vectors or arrays thereof (always flat arrays)
+		getParameter(point, target) {
+			// This can potentially have a divide by zero if the box
+			// has a size dimension of 0.
+			return target.set((point.x - this.min.x) / (this.max.x - this.min.x), (point.y - this.min.y) / (this.max.y - this.min.y));
+		}
 
-	function setValue2iv( gl, v ) {
+		intersectsBox(box) {
+			// using 4 splitting planes to rule out intersections
+			return box.max.x < this.min.x || box.min.x > this.max.x || box.max.y < this.min.y || box.min.y > this.max.y ? false : true;
+		}
 
-		gl.uniform2iv( this.addr, v );
+		clampPoint(point, target) {
+			return target.copy(point).clamp(this.min, this.max);
+		}
 
-	}
+		distanceToPoint(point) {
+			const clampedPoint = _vector$4.copy(point).clamp(this.min, this.max);
 
-	function setValue3iv( gl, v ) {
+			return clampedPoint.sub(point).length();
+		}
 
-		gl.uniform3iv( this.addr, v );
+		intersect(box) {
+			this.min.max(box.min);
+			this.max.min(box.max);
+			return this;
+		}
 
-	}
+		union(box) {
+			this.min.min(box.min);
+			this.max.max(box.max);
+			return this;
+		}
 
-	function setValue4iv( gl, v ) {
+		translate(offset) {
+			this.min.add(offset);
+			this.max.add(offset);
+			return this;
+		}
 
-		gl.uniform4iv( this.addr, v );
+		equals(box) {
+			return box.min.equals(this.min) && box.max.equals(this.max);
+		}
 
 	}
 
-	// Helper to pick the right setter for the singular case
-
-	function getSingularSetter( type ) {
-
-		switch ( type ) {
+	Box2.prototype.isBox2 = true;
 
-			case 0x1406: return setValue1f; // FLOAT
-			case 0x8b50: return setValue2fv; // _VEC2
-			case 0x8b51: return setValue3fv; // _VEC3
-			case 0x8b52: return setValue4fv; // _VEC4
+	const _startP = /*@__PURE__*/new Vector3();
 
-			case 0x8b5a: return setValue2fm; // _MAT2
-			case 0x8b5b: return setValue3fm; // _MAT3
-			case 0x8b5c: return setValue4fm; // _MAT4
+	const _startEnd = /*@__PURE__*/new Vector3();
 
-			case 0x8b5e: case 0x8d66: return setValueT1; // SAMPLER_2D, SAMPLER_EXTERNAL_OES
-			case 0x8b60: return setValueT6; // SAMPLER_CUBE
+	class Line3 {
+		constructor(start = new Vector3(), end = new Vector3()) {
+			this.start = start;
+			this.end = end;
+		}
 
-			case 0x1404: case 0x8b56: return setValue1i; // INT, BOOL
-			case 0x8b53: case 0x8b57: return setValue2iv; // _VEC2
-			case 0x8b54: case 0x8b58: return setValue3iv; // _VEC3
-			case 0x8b55: case 0x8b59: return setValue4iv; // _VEC4
+		set(start, end) {
+			this.start.copy(start);
+			this.end.copy(end);
+			return this;
+		}
 
+		copy(line) {
+			this.start.copy(line.start);
+			this.end.copy(line.end);
+			return this;
 		}
 
-	}
+		getCenter(target) {
+			return target.addVectors(this.start, this.end).multiplyScalar(0.5);
+		}
 
-	// Array of scalars
+		delta(target) {
+			return target.subVectors(this.end, this.start);
+		}
 
-	function setValue1fv( gl, v ) {
+		distanceSq() {
+			return this.start.distanceToSquared(this.end);
+		}
 
-		gl.uniform1fv( this.addr, v );
+		distance() {
+			return this.start.distanceTo(this.end);
+		}
 
-	}
-	function setValue1iv( gl, v ) {
+		at(t, target) {
+			return this.delta(target).multiplyScalar(t).add(this.start);
+		}
 
-		gl.uniform1iv( this.addr, v );
+		closestPointToPointParameter(point, clampToLine) {
+			_startP.subVectors(point, this.start);
 
-	}
+			_startEnd.subVectors(this.end, this.start);
 
-	// Array of vectors (flat or from THREE classes)
+			const startEnd2 = _startEnd.dot(_startEnd);
 
-	function setValueV2a( gl, v ) {
+			const startEnd_startP = _startEnd.dot(_startP);
 
-		gl.uniform2fv( this.addr, flatten( v, this.size, 2 ) );
+			let t = startEnd_startP / startEnd2;
 
-	}
+			if (clampToLine) {
+				t = clamp(t, 0, 1);
+			}
 
-	function setValueV3a( gl, v ) {
+			return t;
+		}
 
-		gl.uniform3fv( this.addr, flatten( v, this.size, 3 ) );
+		closestPointToPoint(point, clampToLine, target) {
+			const t = this.closestPointToPointParameter(point, clampToLine);
+			return this.delta(target).multiplyScalar(t).add(this.start);
+		}
 
-	}
+		applyMatrix4(matrix) {
+			this.start.applyMatrix4(matrix);
+			this.end.applyMatrix4(matrix);
+			return this;
+		}
 
-	function setValueV4a( gl, v ) {
+		equals(line) {
+			return line.start.equals(this.start) && line.end.equals(this.end);
+		}
 
-		gl.uniform4fv( this.addr, flatten( v, this.size, 4 ) );
+		clone() {
+			return new this.constructor().copy(this);
+		}
 
 	}
 
-	// Array of matrices (flat or from THREE clases)
-
-	function setValueM2a( gl, v ) {
-
-		gl.uniformMatrix2fv( this.addr, false, flatten( v, this.size, 4 ) );
+	class ImmediateRenderObject extends Object3D {
+		constructor(material) {
+			super();
+			this.material = material;
 
-	}
-
-	function setValueM3a( gl, v ) {
+			this.render = function ()
+			/* renderCallback */
+			{};
 
-		gl.uniformMatrix3fv( this.addr, false, flatten( v, this.size, 9 ) );
+			this.hasPositions = false;
+			this.hasNormals = false;
+			this.hasColors = false;
+			this.hasUvs = false;
+			this.positionArray = null;
+			this.normalArray = null;
+			this.colorArray = null;
+			this.uvArray = null;
+			this.count = 0;
+		}
 
 	}
 
-	function setValueM4a( gl, v ) {
+	ImmediateRenderObject.prototype.isImmediateRenderObject = true;
 
-		gl.uniformMatrix4fv( this.addr, false, flatten( v, this.size, 16 ) );
+	const _vector$3 = /*@__PURE__*/new Vector3();
 
-	}
+	class SpotLightHelper extends Object3D {
+		constructor(light, color) {
+			super();
+			this.light = light;
+			this.light.updateMatrixWorld();
+			this.matrix = light.matrixWorld;
+			this.matrixAutoUpdate = false;
+			this.color = color;
+			const geometry = new BufferGeometry();
+			const positions = [0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, -1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, -1, 1];
 
-	// Array of textures (2D / Cube)
+			for (let i = 0, j = 1, l = 32; i < l; i++, j++) {
+				const p1 = i / l * Math.PI * 2;
+				const p2 = j / l * Math.PI * 2;
+				positions.push(Math.cos(p1), Math.sin(p1), 1, Math.cos(p2), Math.sin(p2), 1);
+			}
 
-	function setValueT1a( gl, v, renderer ) {
+			geometry.setAttribute('position', new Float32BufferAttribute(positions, 3));
+			const material = new LineBasicMaterial({
+				fog: false,
+				toneMapped: false
+			});
+			this.cone = new LineSegments(geometry, material);
+			this.add(this.cone);
+			this.update();
+		}
 
-		var n = v.length,
-			units = allocTexUnits( renderer, n );
+		dispose() {
+			this.cone.geometry.dispose();
+			this.cone.material.dispose();
+		}
 
-		gl.uniform1iv( this.addr, units );
+		update() {
+			this.light.updateMatrixWorld();
+			const coneLength = this.light.distance ? this.light.distance : 1000;
+			const coneWidth = coneLength * Math.tan(this.light.angle);
+			this.cone.scale.set(coneWidth, coneWidth, coneLength);
 
-		for ( var i = 0; i !== n; ++ i ) {
+			_vector$3.setFromMatrixPosition(this.light.target.matrixWorld);
 
-			renderer.setTexture2D( v[ i ] || emptyTexture, units[ i ] );
+			this.cone.lookAt(_vector$3);
 
+			if (this.color !== undefined) {
+				this.cone.material.color.set(this.color);
+			} else {
+				this.cone.material.color.copy(this.light.color);
+			}
 		}
 
 	}
 
-	function setValueT6a( gl, v, renderer ) {
+	const _vector$2 = /*@__PURE__*/new Vector3();
 
-		var n = v.length,
-			units = allocTexUnits( renderer, n );
+	const _boneMatrix = /*@__PURE__*/new Matrix4();
 
-		gl.uniform1iv( this.addr, units );
+	const _matrixWorldInv = /*@__PURE__*/new Matrix4();
 
-		for ( var i = 0; i !== n; ++ i ) {
+	class SkeletonHelper extends LineSegments {
+		constructor(object) {
+			const bones = getBoneList(object);
+			const geometry = new BufferGeometry();
+			const vertices = [];
+			const colors = [];
+			const color1 = new Color(0, 0, 1);
+			const color2 = new Color(0, 1, 0);
 
-			renderer.setTextureCube( v[ i ] || emptyCubeTexture, units[ i ] );
+			for (let i = 0; i < bones.length; i++) {
+				const bone = bones[i];
 
+				if (bone.parent && bone.parent.isBone) {
+					vertices.push(0, 0, 0);
+					vertices.push(0, 0, 0);
+					colors.push(color1.r, color1.g, color1.b);
+					colors.push(color2.r, color2.g, color2.b);
+				}
+			}
+
+			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
+			const material = new LineBasicMaterial({
+				vertexColors: true,
+				depthTest: false,
+				depthWrite: false,
+				toneMapped: false,
+				transparent: true
+			});
+			super(geometry, material);
+			this.type = 'SkeletonHelper';
+			this.isSkeletonHelper = true;
+			this.root = object;
+			this.bones = bones;
+			this.matrix = object.matrixWorld;
+			this.matrixAutoUpdate = false;
 		}
 
-	}
+		updateMatrixWorld(force) {
+			const bones = this.bones;
+			const geometry = this.geometry;
+			const position = geometry.getAttribute('position');
 
-	// Helper to pick the right setter for a pure (bottom-level) array
+			_matrixWorldInv.copy(this.root.matrixWorld).invert();
 
-	function getPureArraySetter( type ) {
+			for (let i = 0, j = 0; i < bones.length; i++) {
+				const bone = bones[i];
 
-		switch ( type ) {
+				if (bone.parent && bone.parent.isBone) {
+					_boneMatrix.multiplyMatrices(_matrixWorldInv, bone.matrixWorld);
 
-			case 0x1406: return setValue1fv; // FLOAT
-			case 0x8b50: return setValueV2a; // _VEC2
-			case 0x8b51: return setValueV3a; // _VEC3
-			case 0x8b52: return setValueV4a; // _VEC4
+					_vector$2.setFromMatrixPosition(_boneMatrix);
 
-			case 0x8b5a: return setValueM2a; // _MAT2
-			case 0x8b5b: return setValueM3a; // _MAT3
-			case 0x8b5c: return setValueM4a; // _MAT4
+					position.setXYZ(j, _vector$2.x, _vector$2.y, _vector$2.z);
 
-			case 0x8b5e: return setValueT1a; // SAMPLER_2D
-			case 0x8b60: return setValueT6a; // SAMPLER_CUBE
+					_boneMatrix.multiplyMatrices(_matrixWorldInv, bone.parent.matrixWorld);
 
-			case 0x1404: case 0x8b56: return setValue1iv; // INT, BOOL
-			case 0x8b53: case 0x8b57: return setValue2iv; // _VEC2
-			case 0x8b54: case 0x8b58: return setValue3iv; // _VEC3
-			case 0x8b55: case 0x8b59: return setValue4iv; // _VEC4
+					_vector$2.setFromMatrixPosition(_boneMatrix);
 
+					position.setXYZ(j + 1, _vector$2.x, _vector$2.y, _vector$2.z);
+					j += 2;
+				}
+			}
+
+			geometry.getAttribute('position').needsUpdate = true;
+			super.updateMatrixWorld(force);
 		}
 
 	}
 
-	// --- Uniform Classes ---
+	function getBoneList(object) {
+		const boneList = [];
 
-	function SingleUniform( id, activeInfo, addr ) {
-
-		this.id = id;
-		this.addr = addr;
-		this.setValue = getSingularSetter( activeInfo.type );
+		if (object && object.isBone) {
+			boneList.push(object);
+		}
 
-		// this.path = activeInfo.name; // DEBUG
+		for (let i = 0; i < object.children.length; i++) {
+			boneList.push.apply(boneList, getBoneList(object.children[i]));
+		}
 
+		return boneList;
 	}
 
-	function PureArrayUniform( id, activeInfo, addr ) {
+	class PointLightHelper extends Mesh {
+		constructor(light, sphereSize, color) {
+			const geometry = new SphereGeometry(sphereSize, 4, 2);
+			const material = new MeshBasicMaterial({
+				wireframe: true,
+				fog: false,
+				toneMapped: false
+			});
+			super(geometry, material);
+			this.light = light;
+			this.light.updateMatrixWorld();
+			this.color = color;
+			this.type = 'PointLightHelper';
+			this.matrix = this.light.matrixWorld;
+			this.matrixAutoUpdate = false;
+			this.update();
+			/*
+			// TODO: delete this comment?
+			const distanceGeometry = new THREE.IcosahedronBufferGeometry( 1, 2 );
+			const distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );
+			this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );
+			this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );
+			const d = light.distance;
+			if ( d === 0.0 ) {
+				this.lightDistance.visible = false;
+			} else {
+				this.lightDistance.scale.set( d, d, d );
+			}
+			this.add( this.lightDistance );
+			*/
+		}
 
-		this.id = id;
-		this.addr = addr;
-		this.size = activeInfo.size;
-		this.setValue = getPureArraySetter( activeInfo.type );
-
-		// this.path = activeInfo.name; // DEBUG
-
-	}
-
-	function StructuredUniform( id ) {
+		dispose() {
+			this.geometry.dispose();
+			this.material.dispose();
+		}
 
-		this.id = id;
+		update() {
+			if (this.color !== undefined) {
+				this.material.color.set(this.color);
+			} else {
+				this.material.color.copy(this.light.color);
+			}
+			/*
+			const d = this.light.distance;
+				if ( d === 0.0 ) {
+					this.lightDistance.visible = false;
+				} else {
+					this.lightDistance.visible = true;
+				this.lightDistance.scale.set( d, d, d );
+				}
+			*/
 
-		UniformContainer.call( this ); // mix-in
+		}
 
 	}
 
-	StructuredUniform.prototype.setValue = function ( gl, value ) {
+	const _vector$1 = /*@__PURE__*/new Vector3();
 
-		// Note: Don't need an extra 'renderer' parameter, since samplers
-		// are not allowed in structured uniforms.
+	const _color1 = /*@__PURE__*/new Color();
 
-		var seq = this.seq;
+	const _color2 = /*@__PURE__*/new Color();
 
-		for ( var i = 0, n = seq.length; i !== n; ++ i ) {
+	class HemisphereLightHelper extends Object3D {
+		constructor(light, size, color) {
+			super();
+			this.light = light;
+			this.light.updateMatrixWorld();
+			this.matrix = light.matrixWorld;
+			this.matrixAutoUpdate = false;
+			this.color = color;
+			const geometry = new OctahedronGeometry(size);
+			geometry.rotateY(Math.PI * 0.5);
+			this.material = new MeshBasicMaterial({
+				wireframe: true,
+				fog: false,
+				toneMapped: false
+			});
+			if (this.color === undefined) this.material.vertexColors = true;
+			const position = geometry.getAttribute('position');
+			const colors = new Float32Array(position.count * 3);
+			geometry.setAttribute('color', new BufferAttribute(colors, 3));
+			this.add(new Mesh(geometry, this.material));
+			this.update();
+		}
+
+		dispose() {
+			this.children[0].geometry.dispose();
+			this.children[0].material.dispose();
+		}
+
+		update() {
+			const mesh = this.children[0];
+
+			if (this.color !== undefined) {
+				this.material.color.set(this.color);
+			} else {
+				const colors = mesh.geometry.getAttribute('color');
 
-			var u = seq[ i ];
-			u.setValue( gl, value[ u.id ] );
+				_color1.copy(this.light.color);
 
-		}
+				_color2.copy(this.light.groundColor);
 
-	};
+				for (let i = 0, l = colors.count; i < l; i++) {
+					const color = i < l / 2 ? _color1 : _color2;
+					colors.setXYZ(i, color.r, color.g, color.b);
+				}
 
-	// --- Top-level ---
+				colors.needsUpdate = true;
+			}
 
-	// Parser - builds up the property tree from the path strings
+			mesh.lookAt(_vector$1.setFromMatrixPosition(this.light.matrixWorld).negate());
+		}
 
-	var RePathPart = /([\w\d_]+)(\])?(\[|\.)?/g;
+	}
 
-	// extracts
-	// 	- the identifier (member name or array index)
-	//  - followed by an optional right bracket (found when array index)
-	//  - followed by an optional left bracket or dot (type of subscript)
-	//
-	// Note: These portions can be read in a non-overlapping fashion and
-	// allow straightforward parsing of the hierarchy that WebGL encodes
-	// in the uniform names.
+	class GridHelper extends LineSegments {
+		constructor(size = 10, divisions = 10, color1 = 0x444444, color2 = 0x888888) {
+			color1 = new Color(color1);
+			color2 = new Color(color2);
+			const center = divisions / 2;
+			const step = size / divisions;
+			const halfSize = size / 2;
+			const vertices = [],
+						colors = [];
 
-	function addUniform( container, uniformObject ) {
+			for (let i = 0, j = 0, k = -halfSize; i <= divisions; i++, k += step) {
+				vertices.push(-halfSize, 0, k, halfSize, 0, k);
+				vertices.push(k, 0, -halfSize, k, 0, halfSize);
+				const color = i === center ? color1 : color2;
+				color.toArray(colors, j);
+				j += 3;
+				color.toArray(colors, j);
+				j += 3;
+				color.toArray(colors, j);
+				j += 3;
+				color.toArray(colors, j);
+				j += 3;
+			}
 
-		container.seq.push( uniformObject );
-		container.map[ uniformObject.id ] = uniformObject;
+			const geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
+			const material = new LineBasicMaterial({
+				vertexColors: true,
+				toneMapped: false
+			});
+			super(geometry, material);
+			this.type = 'GridHelper';
+		}
 
 	}
 
-	function parseUniform( activeInfo, addr, container ) {
+	class PolarGridHelper extends LineSegments {
+		constructor(radius = 10, radials = 16, circles = 8, divisions = 64, color1 = 0x444444, color2 = 0x888888) {
+			color1 = new Color(color1);
+			color2 = new Color(color2);
+			const vertices = [];
+			const colors = []; // create the radials
 
-		var path = activeInfo.name,
-			pathLength = path.length;
+			for (let i = 0; i <= radials; i++) {
+				const v = i / radials * (Math.PI * 2);
+				const x = Math.sin(v) * radius;
+				const z = Math.cos(v) * radius;
+				vertices.push(0, 0, 0);
+				vertices.push(x, 0, z);
+				const color = i & 1 ? color1 : color2;
+				colors.push(color.r, color.g, color.b);
+				colors.push(color.r, color.g, color.b);
+			} // create the circles
 
-		// reset RegExp object, because of the early exit of a previous run
-		RePathPart.lastIndex = 0;
 
-		for ( ; ; ) {
+			for (let i = 0; i <= circles; i++) {
+				const color = i & 1 ? color1 : color2;
+				const r = radius - radius / circles * i;
 
-			var match = RePathPart.exec( path ),
-				matchEnd = RePathPart.lastIndex,
+				for (let j = 0; j < divisions; j++) {
+					// first vertex
+					let v = j / divisions * (Math.PI * 2);
+					let x = Math.sin(v) * r;
+					let z = Math.cos(v) * r;
+					vertices.push(x, 0, z);
+					colors.push(color.r, color.g, color.b); // second vertex
 
-				id = match[ 1 ],
-				idIsIndex = match[ 2 ] === ']',
-				subscript = match[ 3 ];
+					v = (j + 1) / divisions * (Math.PI * 2);
+					x = Math.sin(v) * r;
+					z = Math.cos(v) * r;
+					vertices.push(x, 0, z);
+					colors.push(color.r, color.g, color.b);
+				}
+			}
 
-			if ( idIsIndex ) id = id | 0; // convert to integer
+			const geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
+			const material = new LineBasicMaterial({
+				vertexColors: true,
+				toneMapped: false
+			});
+			super(geometry, material);
+			this.type = 'PolarGridHelper';
+		}
 
-			if ( subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength ) {
+	}
 
-				// bare name or "pure" bottom-level array "[0]" suffix
+	const _v1 = /*@__PURE__*/new Vector3();
 
-				addUniform( container, subscript === undefined ?
-					new SingleUniform( id, activeInfo, addr ) :
-					new PureArrayUniform( id, activeInfo, addr ) );
+	const _v2 = /*@__PURE__*/new Vector3();
 
-				break;
+	const _v3 = /*@__PURE__*/new Vector3();
 
+	class DirectionalLightHelper extends Object3D {
+		constructor(light, size, color) {
+			super();
+			this.light = light;
+			this.light.updateMatrixWorld();
+			this.matrix = light.matrixWorld;
+			this.matrixAutoUpdate = false;
+			this.color = color;
+			if (size === undefined) size = 1;
+			let geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute([-size, size, 0, size, size, 0, size, -size, 0, -size, -size, 0, -size, size, 0], 3));
+			const material = new LineBasicMaterial({
+				fog: false,
+				toneMapped: false
+			});
+			this.lightPlane = new Line(geometry, material);
+			this.add(this.lightPlane);
+			geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute([0, 0, 0, 0, 0, 1], 3));
+			this.targetLine = new Line(geometry, material);
+			this.add(this.targetLine);
+			this.update();
+		}
+
+		dispose() {
+			this.lightPlane.geometry.dispose();
+			this.lightPlane.material.dispose();
+			this.targetLine.geometry.dispose();
+			this.targetLine.material.dispose();
+		}
+
+		update() {
+			_v1.setFromMatrixPosition(this.light.matrixWorld);
+
+			_v2.setFromMatrixPosition(this.light.target.matrixWorld);
+
+			_v3.subVectors(_v2, _v1);
+
+			this.lightPlane.lookAt(_v2);
+
+			if (this.color !== undefined) {
+				this.lightPlane.material.color.set(this.color);
+				this.targetLine.material.color.set(this.color);
 			} else {
-
-				// step into inner node / create it in case it doesn't exist
-
-				var map = container.map, next = map[ id ];
-
-				if ( next === undefined ) {
-
-					next = new StructuredUniform( id );
-					addUniform( container, next );
-
-				}
-
-				container = next;
-
+				this.lightPlane.material.color.copy(this.light.color);
+				this.targetLine.material.color.copy(this.light.color);
 			}
 
+			this.targetLine.lookAt(_v2);
+			this.targetLine.scale.z = _v3.length();
 		}
 
 	}
 
-	// Root Container
+	const _vector = /*@__PURE__*/new Vector3();
 
-	function WebGLUniforms( gl, program, renderer ) {
+	const _camera = /*@__PURE__*/new Camera();
+	/**
+	 *	- shows frustum, line of sight and up of the camera
+	 *	- suitable for fast updates
+	 * 	- based on frustum visualization in lightgl.js shadowmap example
+	 *		http://evanw.github.com/lightgl.js/tests/shadowmap.html
+	 */
 
-		UniformContainer.call( this );
 
-		this.renderer = renderer;
+	class CameraHelper extends LineSegments {
+		constructor(camera) {
+			const geometry = new BufferGeometry();
+			const material = new LineBasicMaterial({
+				color: 0xffffff,
+				vertexColors: true,
+				toneMapped: false
+			});
+			const vertices = [];
+			const colors = [];
+			const pointMap = {}; // colors
+
+			const colorFrustum = new Color(0xffaa00);
+			const colorCone = new Color(0xff0000);
+			const colorUp = new Color(0x00aaff);
+			const colorTarget = new Color(0xffffff);
+			const colorCross = new Color(0x333333); // near
+
+			addLine('n1', 'n2', colorFrustum);
+			addLine('n2', 'n4', colorFrustum);
+			addLine('n4', 'n3', colorFrustum);
+			addLine('n3', 'n1', colorFrustum); // far
+
+			addLine('f1', 'f2', colorFrustum);
+			addLine('f2', 'f4', colorFrustum);
+			addLine('f4', 'f3', colorFrustum);
+			addLine('f3', 'f1', colorFrustum); // sides
+
+			addLine('n1', 'f1', colorFrustum);
+			addLine('n2', 'f2', colorFrustum);
+			addLine('n3', 'f3', colorFrustum);
+			addLine('n4', 'f4', colorFrustum); // cone
+
+			addLine('p', 'n1', colorCone);
+			addLine('p', 'n2', colorCone);
+			addLine('p', 'n3', colorCone);
+			addLine('p', 'n4', colorCone); // up
+
+			addLine('u1', 'u2', colorUp);
+			addLine('u2', 'u3', colorUp);
+			addLine('u3', 'u1', colorUp); // target
+
+			addLine('c', 't', colorTarget);
+			addLine('p', 'c', colorCross); // cross
+
+			addLine('cn1', 'cn2', colorCross);
+			addLine('cn3', 'cn4', colorCross);
+			addLine('cf1', 'cf2', colorCross);
+			addLine('cf3', 'cf4', colorCross);
+
+			function addLine(a, b, color) {
+				addPoint(a, color);
+				addPoint(b, color);
+			}
+
+			function addPoint(id, color) {
+				vertices.push(0, 0, 0);
+				colors.push(color.r, color.g, color.b);
+
+				if (pointMap[id] === undefined) {
+					pointMap[id] = [];
+				}
+
+				pointMap[id].push(vertices.length / 3 - 1);
+			}
+
+			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
+			super(geometry, material);
+			this.type = 'CameraHelper';
+			this.camera = camera;
+			if (this.camera.updateProjectionMatrix) this.camera.updateProjectionMatrix();
+			this.matrix = camera.matrixWorld;
+			this.matrixAutoUpdate = false;
+			this.pointMap = pointMap;
+			this.update();
+		}
+
+		update() {
+			const geometry = this.geometry;
+			const pointMap = this.pointMap;
+			const w = 1,
+						h = 1; // we need just camera projection matrix inverse
+			// world matrix must be identity
 
-		var n = gl.getProgramParameter( program, gl.ACTIVE_UNIFORMS );
+			_camera.projectionMatrixInverse.copy(this.camera.projectionMatrixInverse); // center / target
 
-		for ( var i = 0; i < n; ++ i ) {
 
-			var info = gl.getActiveUniform( program, i ),
-				path = info.name,
-				addr = gl.getUniformLocation( program, path );
+			setPoint('c', pointMap, geometry, _camera, 0, 0, -1);
+			setPoint('t', pointMap, geometry, _camera, 0, 0, 1); // near
 
-			parseUniform( info, addr, this );
+			setPoint('n1', pointMap, geometry, _camera, -w, -h, -1);
+			setPoint('n2', pointMap, geometry, _camera, w, -h, -1);
+			setPoint('n3', pointMap, geometry, _camera, -w, h, -1);
+			setPoint('n4', pointMap, geometry, _camera, w, h, -1); // far
 
-		}
+			setPoint('f1', pointMap, geometry, _camera, -w, -h, 1);
+			setPoint('f2', pointMap, geometry, _camera, w, -h, 1);
+			setPoint('f3', pointMap, geometry, _camera, -w, h, 1);
+			setPoint('f4', pointMap, geometry, _camera, w, h, 1); // up
 
-	}
+			setPoint('u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, -1);
+			setPoint('u2', pointMap, geometry, _camera, -w * 0.7, h * 1.1, -1);
+			setPoint('u3', pointMap, geometry, _camera, 0, h * 2, -1); // cross
 
-	WebGLUniforms.prototype.setValue = function ( gl, name, value ) {
+			setPoint('cf1', pointMap, geometry, _camera, -w, 0, 1);
+			setPoint('cf2', pointMap, geometry, _camera, w, 0, 1);
+			setPoint('cf3', pointMap, geometry, _camera, 0, -h, 1);
+			setPoint('cf4', pointMap, geometry, _camera, 0, h, 1);
+			setPoint('cn1', pointMap, geometry, _camera, -w, 0, -1);
+			setPoint('cn2', pointMap, geometry, _camera, w, 0, -1);
+			setPoint('cn3', pointMap, geometry, _camera, 0, -h, -1);
+			setPoint('cn4', pointMap, geometry, _camera, 0, h, -1);
+			geometry.getAttribute('position').needsUpdate = true;
+		}
 
-		var u = this.map[ name ];
+		dispose() {
+			this.geometry.dispose();
+			this.material.dispose();
+		}
 
-		if ( u !== undefined ) u.setValue( gl, value, this.renderer );
+	}
 
-	};
+	function setPoint(point, pointMap, geometry, camera, x, y, z) {
+		_vector.set(x, y, z).unproject(camera);
 
-	WebGLUniforms.prototype.setOptional = function ( gl, object, name ) {
+		const points = pointMap[point];
 
-		var v = object[ name ];
+		if (points !== undefined) {
+			const position = geometry.getAttribute('position');
 
-		if ( v !== undefined ) this.setValue( gl, name, v );
+			for (let i = 0, l = points.length; i < l; i++) {
+				position.setXYZ(points[i], _vector.x, _vector.y, _vector.z);
+			}
+		}
+	}
 
-	};
+	const _box = /*@__PURE__*/new Box3();
 
+	class BoxHelper extends LineSegments {
+		constructor(object, color = 0xffff00) {
+			const indices = new Uint16Array([0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7]);
+			const positions = new Float32Array(8 * 3);
+			const geometry = new BufferGeometry();
+			geometry.setIndex(new BufferAttribute(indices, 1));
+			geometry.setAttribute('position', new BufferAttribute(positions, 3));
+			super(geometry, new LineBasicMaterial({
+				color: color,
+				toneMapped: false
+			}));
+			this.object = object;
+			this.type = 'BoxHelper';
+			this.matrixAutoUpdate = false;
+			this.update();
+		}
 
-	// Static interface
+		update(object) {
+			if (object !== undefined) {
+				console.warn('THREE.BoxHelper: .update() has no longer arguments.');
+			}
 
-	WebGLUniforms.upload = function ( gl, seq, values, renderer ) {
+			if (this.object !== undefined) {
+				_box.setFromObject(this.object);
+			}
 
-		for ( var i = 0, n = seq.length; i !== n; ++ i ) {
+			if (_box.isEmpty()) return;
+			const min = _box.min;
+			const max = _box.max;
+			/*
+				5____4
+			1/___0/|
+			| 6__|_7
+			2/___3/
+				0: max.x, max.y, max.z
+			1: min.x, max.y, max.z
+			2: min.x, min.y, max.z
+			3: max.x, min.y, max.z
+			4: max.x, max.y, min.z
+			5: min.x, max.y, min.z
+			6: min.x, min.y, min.z
+			7: max.x, min.y, min.z
+			*/
 
-			var u = seq[ i ],
-				v = values[ u.id ];
+			const position = this.geometry.attributes.position;
+			const array = position.array;
+			array[0] = max.x;
+			array[1] = max.y;
+			array[2] = max.z;
+			array[3] = min.x;
+			array[4] = max.y;
+			array[5] = max.z;
+			array[6] = min.x;
+			array[7] = min.y;
+			array[8] = max.z;
+			array[9] = max.x;
+			array[10] = min.y;
+			array[11] = max.z;
+			array[12] = max.x;
+			array[13] = max.y;
+			array[14] = min.z;
+			array[15] = min.x;
+			array[16] = max.y;
+			array[17] = min.z;
+			array[18] = min.x;
+			array[19] = min.y;
+			array[20] = min.z;
+			array[21] = max.x;
+			array[22] = min.y;
+			array[23] = min.z;
+			position.needsUpdate = true;
+			this.geometry.computeBoundingSphere();
+		}
 
-			if ( v.needsUpdate !== false ) {
+		setFromObject(object) {
+			this.object = object;
+			this.update();
+			return this;
+		}
 
-				// note: always updating when .needsUpdate is undefined
-				u.setValue( gl, v.value, renderer );
+		copy(source) {
+			LineSegments.prototype.copy.call(this, source);
+			this.object = source.object;
+			return this;
+		}
 
-			}
+	}
 
+	class Box3Helper extends LineSegments {
+		constructor(box, color = 0xffff00) {
+			const indices = new Uint16Array([0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7]);
+			const positions = [1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1, 1, -1, -1, 1, -1, -1, -1, -1, 1, -1, -1];
+			const geometry = new BufferGeometry();
+			geometry.setIndex(new BufferAttribute(indices, 1));
+			geometry.setAttribute('position', new Float32BufferAttribute(positions, 3));
+			super(geometry, new LineBasicMaterial({
+				color: color,
+				toneMapped: false
+			}));
+			this.box = box;
+			this.type = 'Box3Helper';
+			this.geometry.computeBoundingSphere();
 		}
 
-	};
+		updateMatrixWorld(force) {
+			const box = this.box;
+			if (box.isEmpty()) return;
+			box.getCenter(this.position);
+			box.getSize(this.scale);
+			this.scale.multiplyScalar(0.5);
+			super.updateMatrixWorld(force);
+		}
 
-	WebGLUniforms.seqWithValue = function ( seq, values ) {
+	}
 
-		var r = [];
+	class PlaneHelper extends Line {
+		constructor(plane, size = 1, hex = 0xffff00) {
+			const color = hex;
+			const positions = [1, -1, 1, -1, 1, 1, -1, -1, 1, 1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0];
+			const geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute(positions, 3));
+			geometry.computeBoundingSphere();
+			super(geometry, new LineBasicMaterial({
+				color: color,
+				toneMapped: false
+			}));
+			this.type = 'PlaneHelper';
+			this.plane = plane;
+			this.size = size;
+			const positions2 = [1, 1, 1, -1, 1, 1, -1, -1, 1, 1, 1, 1, -1, -1, 1, 1, -1, 1];
+			const geometry2 = new BufferGeometry();
+			geometry2.setAttribute('position', new Float32BufferAttribute(positions2, 3));
+			geometry2.computeBoundingSphere();
+			this.add(new Mesh(geometry2, new MeshBasicMaterial({
+				color: color,
+				opacity: 0.2,
+				transparent: true,
+				depthWrite: false,
+				toneMapped: false
+			})));
+		}
 
-		for ( var i = 0, n = seq.length; i !== n; ++ i ) {
+		updateMatrixWorld(force) {
+			let scale = -this.plane.constant;
+			if (Math.abs(scale) < 1e-8) scale = 1e-8; // sign does not matter
 
-			var u = seq[ i ];
-			if ( u.id in values ) r.push( u );
+			this.scale.set(0.5 * this.size, 0.5 * this.size, scale);
+			this.children[0].material.side = scale < 0 ? BackSide : FrontSide; // renderer flips side when determinant < 0; flipping not wanted here
 
+			this.lookAt(this.plane.normal);
+			super.updateMatrixWorld(force);
 		}
 
-		return r;
-
-	};
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+	}
 
-	function addLineNumbers( string ) {
+	const _axis = /*@__PURE__*/new Vector3();
 
-		var lines = string.split( '\n' );
+	let _lineGeometry, _coneGeometry;
 
-		for ( var i = 0; i < lines.length; i ++ ) {
+	class ArrowHelper extends Object3D {
+		// dir is assumed to be normalized
+		constructor(dir = new Vector3(0, 0, 1), origin = new Vector3(0, 0, 0), length = 1, color = 0xffff00, headLength = length * 0.2, headWidth = headLength * 0.2) {
+			super();
+			this.type = 'ArrowHelper';
 
-			lines[ i ] = ( i + 1 ) + ': ' + lines[ i ];
+			if (_lineGeometry === undefined) {
+				_lineGeometry = new BufferGeometry();
 
-		}
+				_lineGeometry.setAttribute('position', new Float32BufferAttribute([0, 0, 0, 0, 1, 0], 3));
 
-		return lines.join( '\n' );
+				_coneGeometry = new CylinderGeometry(0, 0.5, 1, 5, 1);
 
-	}
+				_coneGeometry.translate(0, -0.5, 0);
+			}
 
-	function WebGLShader( gl, type, string ) {
+			this.position.copy(origin);
+			this.line = new Line(_lineGeometry, new LineBasicMaterial({
+				color: color,
+				toneMapped: false
+			}));
+			this.line.matrixAutoUpdate = false;
+			this.add(this.line);
+			this.cone = new Mesh(_coneGeometry, new MeshBasicMaterial({
+				color: color,
+				toneMapped: false
+			}));
+			this.cone.matrixAutoUpdate = false;
+			this.add(this.cone);
+			this.setDirection(dir);
+			this.setLength(length, headLength, headWidth);
+		}
 
-		var shader = gl.createShader( type );
+		setDirection(dir) {
+			// dir is assumed to be normalized
+			if (dir.y > 0.99999) {
+				this.quaternion.set(0, 0, 0, 1);
+			} else if (dir.y < -0.99999) {
+				this.quaternion.set(1, 0, 0, 0);
+			} else {
+				_axis.set(dir.z, 0, -dir.x).normalize();
 
-		gl.shaderSource( shader, string );
-		gl.compileShader( shader );
+				const radians = Math.acos(dir.y);
+				this.quaternion.setFromAxisAngle(_axis, radians);
+			}
+		}
 
-		if ( gl.getShaderParameter( shader, gl.COMPILE_STATUS ) === false ) {
+		setLength(length, headLength = length * 0.2, headWidth = headLength * 0.2) {
+			this.line.scale.set(1, Math.max(0.0001, length - headLength), 1); // see #17458
 
-			console.error( 'THREE.WebGLShader: Shader couldn\'t compile.' );
+			this.line.updateMatrix();
+			this.cone.scale.set(headWidth, headLength, headWidth);
+			this.cone.position.y = length;
+			this.cone.updateMatrix();
+		}
 
+		setColor(color) {
+			this.line.material.color.set(color);
+			this.cone.material.color.set(color);
 		}
 
-		if ( gl.getShaderInfoLog( shader ) !== '' ) {
+		copy(source) {
+			super.copy(source, false);
+			this.line.copy(source.line);
+			this.cone.copy(source.cone);
+			return this;
+		}
 
-			console.warn( 'THREE.WebGLShader: gl.getShaderInfoLog()', type === gl.VERTEX_SHADER ? 'vertex' : 'fragment', gl.getShaderInfoLog( shader ), addLineNumbers( string ) );
+	}
 
+	class AxesHelper extends LineSegments {
+		constructor(size = 1) {
+			const vertices = [0, 0, 0, size, 0, 0, 0, 0, 0, 0, size, 0, 0, 0, 0, 0, 0, size];
+			const colors = [1, 0, 0, 1, 0.6, 0, 0, 1, 0, 0.6, 1, 0, 0, 0, 1, 0, 0.6, 1];
+			const geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
+			const material = new LineBasicMaterial({
+				vertexColors: true,
+				toneMapped: false
+			});
+			super(geometry, material);
+			this.type = 'AxesHelper';
 		}
 
-		// --enable-privileged-webgl-extension
-		// console.log( type, gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );
+		setColors(xAxisColor, yAxisColor, zAxisColor) {
+			const color = new Color();
+			const array = this.geometry.attributes.color.array;
+			color.set(xAxisColor);
+			color.toArray(array, 0);
+			color.toArray(array, 3);
+			color.set(yAxisColor);
+			color.toArray(array, 6);
+			color.toArray(array, 9);
+			color.set(zAxisColor);
+			color.toArray(array, 12);
+			color.toArray(array, 15);
+			this.geometry.attributes.color.needsUpdate = true;
+			return this;
+		}
 
-		return shader;
+		dispose() {
+			this.geometry.dispose();
+			this.material.dispose();
+		}
 
 	}
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
+	const _floatView = new Float32Array(1);
 
-	var programIdCount = 0;
+	const _int32View = new Int32Array(_floatView.buffer);
 
-	function getEncodingComponents( encoding ) {
+	class DataUtils {
+		// Converts float32 to float16 (stored as uint16 value).
+		static toHalfFloat(val) {
+			// Source: http://gamedev.stackexchange.com/questions/17326/conversion-of-a-number-from-single-precision-floating-point-representation-to-a/17410#17410
 
-		switch ( encoding ) {
+			/* This method is faster than the OpenEXR implementation (very often
+			* used, eg. in Ogre), with the additional benefit of rounding, inspired
+			* by James Tursa?s half-precision code. */
+			_floatView[0] = val;
+			const x = _int32View[0];
+			let bits = x >> 16 & 0x8000;
+			/* Get the sign */
 
-			case LinearEncoding:
-				return [ 'Linear', '( value )' ];
-			case sRGBEncoding:
-				return [ 'sRGB', '( value )' ];
-			case RGBEEncoding:
-				return [ 'RGBE', '( value )' ];
-			case RGBM7Encoding:
-				return [ 'RGBM', '( value, 7.0 )' ];
-			case RGBM16Encoding:
-				return [ 'RGBM', '( value, 16.0 )' ];
-			case RGBDEncoding:
-				return [ 'RGBD', '( value, 256.0 )' ];
-			case GammaEncoding:
-				return [ 'Gamma', '( value, float( GAMMA_FACTOR ) )' ];
-			default:
-				throw new Error( 'unsupported encoding: ' + encoding );
+			let m = x >> 12 & 0x07ff;
+			/* Keep one extra bit for rounding */
 
-		}
+			const e = x >> 23 & 0xff;
+			/* Using int is faster here */
 
-	}
+			/* If zero, or denormal, or exponent underflows too much for a denormal
+				* half, return signed zero. */
 
-	function getTexelDecodingFunction( functionName, encoding ) {
+			if (e < 103) return bits;
+			/* If NaN, return NaN. If Inf or exponent overflow, return Inf. */
 
-		var components = getEncodingComponents( encoding );
-		return 'vec4 ' + functionName + '( vec4 value ) { return ' + components[ 0 ] + 'ToLinear' + components[ 1 ] + '; }';
+			if (e > 142) {
+				bits |= 0x7c00;
+				/* If exponent was 0xff and one mantissa bit was set, it means NaN,
+							* not Inf, so make sure we set one mantissa bit too. */
 
-	}
+				bits |= (e == 255 ? 0 : 1) && x & 0x007fffff;
+				return bits;
+			}
+			/* If exponent underflows but not too much, return a denormal */
 
-	function getTexelEncodingFunction( functionName, encoding ) {
 
-		var components = getEncodingComponents( encoding );
-		return 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[ 0 ] + components[ 1 ] + '; }';
+			if (e < 113) {
+				m |= 0x0800;
+				/* Extra rounding may overflow and set mantissa to 0 and exponent
+					* to 1, which is OK. */
 
-	}
+				bits |= (m >> 114 - e) + (m >> 113 - e & 1);
+				return bits;
+			}
 
-	function getToneMappingFunction( functionName, toneMapping ) {
+			bits |= e - 112 << 10 | m >> 1;
+			/* Extra rounding. An overflow will set mantissa to 0 and increment
+				* the exponent, which is OK. */
 
-		var toneMappingName;
+			bits += m & 1;
+			return bits;
+		}
 
-		switch ( toneMapping ) {
+	}
 
-			case LinearToneMapping:
-				toneMappingName = 'Linear';
-				break;
+	const LOD_MIN = 4;
+	const LOD_MAX = 8;
+	const SIZE_MAX = Math.pow(2, LOD_MAX); // The standard deviations (radians) associated with the extra mips. These are
+	// chosen to approximate a Trowbridge-Reitz distribution function times the
+	// geometric shadowing function. These sigma values squared must match the
+	// variance #defines in cube_uv_reflection_fragment.glsl.js.
 
-			case ReinhardToneMapping:
-				toneMappingName = 'Reinhard';
-				break;
+	const EXTRA_LOD_SIGMA = [0.125, 0.215, 0.35, 0.446, 0.526, 0.582];
+	const TOTAL_LODS = LOD_MAX - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length; // The maximum length of the blur for loop. Smaller sigmas will use fewer
+	// samples and exit early, but not recompile the shader.
 
-			case Uncharted2ToneMapping:
-				toneMappingName = 'Uncharted2';
-				break;
+	const MAX_SAMPLES = 20;
+	const ENCODINGS = {
+		[LinearEncoding]: 0,
+		[sRGBEncoding]: 1,
+		[RGBEEncoding]: 2,
+		[RGBM7Encoding]: 3,
+		[RGBM16Encoding]: 4,
+		[RGBDEncoding]: 5,
+		[GammaEncoding]: 6
+	};
+	const backgroundMaterial = new MeshBasicMaterial({
+		side: BackSide,
+		depthWrite: false,
+		depthTest: false
+	});
+	const backgroundBox = new Mesh(new BoxGeometry(), backgroundMaterial);
 
-			case CineonToneMapping:
-				toneMappingName = 'OptimizedCineon';
-				break;
+	const _flatCamera = /*@__PURE__*/new OrthographicCamera();
 
-			default:
-				throw new Error( 'unsupported toneMapping: ' + toneMapping );
+	const {
+		_lodPlanes,
+		_sizeLods,
+		_sigmas
+	} = /*@__PURE__*/_createPlanes();
 
-		}
+	const _clearColor = /*@__PURE__*/new Color();
 
-		return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';
+	let _oldTarget = null; // Golden Ratio
 
-	}
+	const PHI = (1 + Math.sqrt(5)) / 2;
+	const INV_PHI = 1 / PHI; // Vertices of a dodecahedron (except the opposites, which represent the
+	// same axis), used as axis directions evenly spread on a sphere.
 
-	function generateExtensions( extensions, parameters, rendererExtensions ) {
+	const _axisDirections = [/*@__PURE__*/new Vector3(1, 1, 1), /*@__PURE__*/new Vector3(-1, 1, 1), /*@__PURE__*/new Vector3(1, 1, -1), /*@__PURE__*/new Vector3(-1, 1, -1), /*@__PURE__*/new Vector3(0, PHI, INV_PHI), /*@__PURE__*/new Vector3(0, PHI, -INV_PHI), /*@__PURE__*/new Vector3(INV_PHI, 0, PHI), /*@__PURE__*/new Vector3(-INV_PHI, 0, PHI), /*@__PURE__*/new Vector3(PHI, INV_PHI, 0), /*@__PURE__*/new Vector3(-PHI, INV_PHI, 0)];
+	/**
+	 * This class generates a Prefiltered, Mipmapped Radiance Environment Map
+	 * (PMREM) from a cubeMap environment texture. This allows different levels of
+	 * blur to be quickly accessed based on material roughness. It is packed into a
+	 * special CubeUV format that allows us to perform custom interpolation so that
+	 * we can support nonlinear formats such as RGBE. Unlike a traditional mipmap
+	 * chain, it only goes down to the LOD_MIN level (above), and then creates extra
+	 * even more filtered 'mips' at the same LOD_MIN resolution, associated with
+	 * higher roughness levels. In this way we maintain resolution to smoothly
+	 * interpolate diffuse lighting while limiting sampling computation.
+	 *
+	 * Paper: Fast, Accurate Image-Based Lighting
+	 * https://drive.google.com/file/d/15y8r_UpKlU9SvV4ILb0C3qCPecS8pvLz/view
+	*/
 
-		extensions = extensions || {};
+	function convertLinearToRGBE(color) {
+		const maxComponent = Math.max(color.r, color.g, color.b);
+		const fExp = Math.min(Math.max(Math.ceil(Math.log2(maxComponent)), -128.0), 127.0);
+		color.multiplyScalar(Math.pow(2.0, -fExp));
+		const alpha = (fExp + 128.0) / 255.0;
+		return alpha;
+	}
 
-		var chunks = [
-			( extensions.derivatives || parameters.envMapCubeUV || parameters.bumpMap || parameters.normalMap || parameters.flatShading ) ? '#extension GL_OES_standard_derivatives : enable' : '',
-			( extensions.fragDepth || parameters.logarithmicDepthBuffer ) && rendererExtensions.get( 'EXT_frag_depth' ) ? '#extension GL_EXT_frag_depth : enable' : '',
-			( extensions.drawBuffers ) && rendererExtensions.get( 'WEBGL_draw_buffers' ) ? '#extension GL_EXT_draw_buffers : require' : '',
-			( extensions.shaderTextureLOD || parameters.envMap ) && rendererExtensions.get( 'EXT_shader_texture_lod' ) ? '#extension GL_EXT_shader_texture_lod : enable' : ''
-		];
+	class PMREMGenerator {
+		constructor(renderer) {
+			this._renderer = renderer;
+			this._pingPongRenderTarget = null;
+			this._blurMaterial = _getBlurShader(MAX_SAMPLES);
+			this._equirectShader = null;
+			this._cubemapShader = null;
 
-		return chunks.filter( filterEmptyLine ).join( '\n' );
+			this._compileMaterial(this._blurMaterial);
+		}
+		/**
+		 * Generates a PMREM from a supplied Scene, which can be faster than using an
+		 * image if networking bandwidth is low. Optional sigma specifies a blur radius
+		 * in radians to be applied to the scene before PMREM generation. Optional near
+		 * and far planes ensure the scene is rendered in its entirety (the cubeCamera
+		 * is placed at the origin).
+		 */
 
-	}
 
-	function generateDefines( defines ) {
+		fromScene(scene, sigma = 0, near = 0.1, far = 100) {
+			_oldTarget = this._renderer.getRenderTarget();
 
-		var chunks = [];
+			const cubeUVRenderTarget = this._allocateTargets();
 
-		for ( var name in defines ) {
+			this._sceneToCubeUV(scene, near, far, cubeUVRenderTarget);
 
-			var value = defines[ name ];
+			if (sigma > 0) {
+				this._blur(cubeUVRenderTarget, 0, 0, sigma);
+			}
 
-			if ( value === false ) continue;
+			this._applyPMREM(cubeUVRenderTarget);
 
-			chunks.push( '#define ' + name + ' ' + value );
+			this._cleanup(cubeUVRenderTarget);
 
+			return cubeUVRenderTarget;
 		}
+		/**
+		 * Generates a PMREM from an equirectangular texture, which can be either LDR
+		 * (RGBFormat) or HDR (RGBEFormat). The ideal input image size is 1k (1024 x 512),
+		 * as this matches best with the 256 x 256 cubemap output.
+		 */
 
-		return chunks.join( '\n' );
 
-	}
+		fromEquirectangular(equirectangular) {
+			return this._fromTexture(equirectangular);
+		}
+		/**
+		 * Generates a PMREM from an cubemap texture, which can be either LDR
+		 * (RGBFormat) or HDR (RGBEFormat). The ideal input cube size is 256 x 256,
+		 * as this matches best with the 256 x 256 cubemap output.
+		 */
 
-	function fetchAttributeLocations( gl, program ) {
 
-		var attributes = {};
+		fromCubemap(cubemap) {
+			return this._fromTexture(cubemap);
+		}
+		/**
+		 * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during
+		 * your texture's network fetch for increased concurrency.
+		 */
 
-		var n = gl.getProgramParameter( program, gl.ACTIVE_ATTRIBUTES );
 
-		for ( var i = 0; i < n; i ++ ) {
+		compileCubemapShader() {
+			if (this._cubemapShader === null) {
+				this._cubemapShader = _getCubemapShader();
 
-			var info = gl.getActiveAttrib( program, i );
-			var name = info.name;
+				this._compileMaterial(this._cubemapShader);
+			}
+		}
+		/**
+		 * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during
+		 * your texture's network fetch for increased concurrency.
+		 */
 
-			// console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );
 
-			attributes[ name ] = gl.getAttribLocation( program, name );
+		compileEquirectangularShader() {
+			if (this._equirectShader === null) {
+				this._equirectShader = _getEquirectShader();
 
+				this._compileMaterial(this._equirectShader);
+			}
 		}
+		/**
+		 * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,
+		 * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on
+		 * one of them will cause any others to also become unusable.
+		 */
 
-		return attributes;
 
-	}
+		dispose() {
+			this._blurMaterial.dispose();
 
-	function filterEmptyLine( string ) {
+			if (this._cubemapShader !== null) this._cubemapShader.dispose();
+			if (this._equirectShader !== null) this._equirectShader.dispose();
 
-		return string !== '';
+			for (let i = 0; i < _lodPlanes.length; i++) {
+				_lodPlanes[i].dispose();
+			}
+		} // private interface
 
-	}
 
-	function replaceLightNums( string, parameters ) {
+		_cleanup(outputTarget) {
+			this._pingPongRenderTarget.dispose();
 
-		return string
-			.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )
-			.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )
-			.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )
-			.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )
-			.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights );
+			this._renderer.setRenderTarget(_oldTarget);
 
-	}
+			outputTarget.scissorTest = false;
 
-	function replaceClippingPlaneNums( string, parameters ) {
+			_setViewport(outputTarget, 0, 0, outputTarget.width, outputTarget.height);
+		}
 
-		return string
-			.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )
-			.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );
+		_fromTexture(texture) {
+			_oldTarget = this._renderer.getRenderTarget();
 
-	}
+			const cubeUVRenderTarget = this._allocateTargets(texture);
 
-	function parseIncludes( string ) {
+			this._textureToCubeUV(texture, cubeUVRenderTarget);
 
-		var pattern = /^[ \t]*#include +<([\w\d.]+)>/gm;
+			this._applyPMREM(cubeUVRenderTarget);
 
-		function replace( match, include ) {
+			this._cleanup(cubeUVRenderTarget);
 
-			var replace = ShaderChunk[ include ];
+			return cubeUVRenderTarget;
+		}
 
-			if ( replace === undefined ) {
+		_allocateTargets(texture) {
+			// warning: null texture is valid
+			const params = {
+				magFilter: NearestFilter,
+				minFilter: NearestFilter,
+				generateMipmaps: false,
+				type: UnsignedByteType,
+				format: RGBEFormat,
+				encoding: _isLDR(texture) ? texture.encoding : RGBEEncoding,
+				depthBuffer: false
+			};
 
-				throw new Error( 'Can not resolve #include <' + include + '>' );
+			const cubeUVRenderTarget = _createRenderTarget(params);
 
-			}
+			cubeUVRenderTarget.depthBuffer = texture ? false : true;
+			this._pingPongRenderTarget = _createRenderTarget(params);
+			return cubeUVRenderTarget;
+		}
 
-			return parseIncludes( replace );
+		_compileMaterial(material) {
+			const tmpMesh = new Mesh(_lodPlanes[0], material);
 
+			this._renderer.compile(tmpMesh, _flatCamera);
 		}
 
-		return string.replace( pattern, replace );
-
-	}
+		_sceneToCubeUV(scene, near, far, cubeUVRenderTarget) {
+			const fov = 90;
+			const aspect = 1;
+			const cubeCamera = new PerspectiveCamera(fov, aspect, near, far);
+			const upSign = [1, -1, 1, 1, 1, 1];
+			const forwardSign = [1, 1, 1, -1, -1, -1];
+			const renderer = this._renderer;
+			const originalAutoClear = renderer.autoClear;
+			const outputEncoding = renderer.outputEncoding;
+			const toneMapping = renderer.toneMapping;
+			renderer.getClearColor(_clearColor);
+			renderer.toneMapping = NoToneMapping;
+			renderer.outputEncoding = LinearEncoding;
+			renderer.autoClear = false;
+			let useSolidColor = false;
+			const background = scene.background;
 
-	function unrollLoops( string ) {
+			if (background) {
+				if (background.isColor) {
+					backgroundMaterial.color.copy(background).convertSRGBToLinear();
+					scene.background = null;
+					const alpha = convertLinearToRGBE(backgroundMaterial.color);
+					backgroundMaterial.opacity = alpha;
+					useSolidColor = true;
+				}
+			} else {
+				backgroundMaterial.color.copy(_clearColor).convertSRGBToLinear();
+				const alpha = convertLinearToRGBE(backgroundMaterial.color);
+				backgroundMaterial.opacity = alpha;
+				useSolidColor = true;
+			}
 
-		var pattern = /#pragma unroll_loop[\s]+?for \( int i \= (\d+)\; i < (\d+)\; i \+\+ \) \{([\s\S]+?)(?=\})\}/g;
+			for (let i = 0; i < 6; i++) {
+				const col = i % 3;
 
-		function replace( match, start, end, snippet ) {
+				if (col == 0) {
+					cubeCamera.up.set(0, upSign[i], 0);
+					cubeCamera.lookAt(forwardSign[i], 0, 0);
+				} else if (col == 1) {
+					cubeCamera.up.set(0, 0, upSign[i]);
+					cubeCamera.lookAt(0, forwardSign[i], 0);
+				} else {
+					cubeCamera.up.set(0, upSign[i], 0);
+					cubeCamera.lookAt(0, 0, forwardSign[i]);
+				}
 
-			var unroll = '';
+				_setViewport(cubeUVRenderTarget, col * SIZE_MAX, i > 2 ? SIZE_MAX : 0, SIZE_MAX, SIZE_MAX);
 
-			for ( var i = parseInt( start ); i < parseInt( end ); i ++ ) {
+				renderer.setRenderTarget(cubeUVRenderTarget);
 
-				unroll += snippet.replace( /\[ i \]/g, '[ ' + i + ' ]' );
+				if (useSolidColor) {
+					renderer.render(backgroundBox, cubeCamera);
+				}
 
+				renderer.render(scene, cubeCamera);
 			}
 
-			return unroll;
-
+			renderer.toneMapping = toneMapping;
+			renderer.outputEncoding = outputEncoding;
+			renderer.autoClear = originalAutoClear;
 		}
 
-		return string.replace( pattern, replace );
-
-	}
+		_textureToCubeUV(texture, cubeUVRenderTarget) {
+			const renderer = this._renderer;
 
-	function WebGLProgram( renderer, extensions, code, material, shader, parameters ) {
+			if (texture.isCubeTexture) {
+				if (this._cubemapShader == null) {
+					this._cubemapShader = _getCubemapShader();
+				}
+			} else {
+				if (this._equirectShader == null) {
+					this._equirectShader = _getEquirectShader();
+				}
+			}
 
-		var gl = renderer.context;
+			const material = texture.isCubeTexture ? this._cubemapShader : this._equirectShader;
+			const mesh = new Mesh(_lodPlanes[0], material);
+			const uniforms = material.uniforms;
+			uniforms['envMap'].value = texture;
 
-		var defines = material.defines;
+			if (!texture.isCubeTexture) {
+				uniforms['texelSize'].value.set(1.0 / texture.image.width, 1.0 / texture.image.height);
+			}
 
-		var vertexShader = shader.vertexShader;
-		var fragmentShader = shader.fragmentShader;
+			uniforms['inputEncoding'].value = ENCODINGS[texture.encoding];
+			uniforms['outputEncoding'].value = ENCODINGS[cubeUVRenderTarget.texture.encoding];
 
-		var shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';
+			_setViewport(cubeUVRenderTarget, 0, 0, 3 * SIZE_MAX, 2 * SIZE_MAX);
 
-		if ( parameters.shadowMapType === PCFShadowMap ) {
+			renderer.setRenderTarget(cubeUVRenderTarget);
+			renderer.render(mesh, _flatCamera);
+		}
 
-			shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';
+		_applyPMREM(cubeUVRenderTarget) {
+			const renderer = this._renderer;
+			const autoClear = renderer.autoClear;
+			renderer.autoClear = false;
 
-		} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {
+			for (let i = 1; i < TOTAL_LODS; i++) {
+				const sigma = Math.sqrt(_sigmas[i] * _sigmas[i] - _sigmas[i - 1] * _sigmas[i - 1]);
+				const poleAxis = _axisDirections[(i - 1) % _axisDirections.length];
 
-			shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';
+				this._blur(cubeUVRenderTarget, i - 1, i, sigma, poleAxis);
+			}
 
+			renderer.autoClear = autoClear;
 		}
+		/**
+		 * This is a two-pass Gaussian blur for a cubemap. Normally this is done
+		 * vertically and horizontally, but this breaks down on a cube. Here we apply
+		 * the blur latitudinally (around the poles), and then longitudinally (towards
+		 * the poles) to approximate the orthogonally-separable blur. It is least
+		 * accurate at the poles, but still does a decent job.
+		 */
 
-		var envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
-		var envMapModeDefine = 'ENVMAP_MODE_REFLECTION';
-		var envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
 
-		if ( parameters.envMap ) {
+		_blur(cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis) {
+			const pingPongRenderTarget = this._pingPongRenderTarget;
 
-			switch ( material.envMap.mapping ) {
+			this._halfBlur(cubeUVRenderTarget, pingPongRenderTarget, lodIn, lodOut, sigma, 'latitudinal', poleAxis);
 
-				case CubeReflectionMapping:
-				case CubeRefractionMapping:
-					envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
-					break;
+			this._halfBlur(pingPongRenderTarget, cubeUVRenderTarget, lodOut, lodOut, sigma, 'longitudinal', poleAxis);
+		}
 
-				case CubeUVReflectionMapping:
-				case CubeUVRefractionMapping:
-					envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
-					break;
+		_halfBlur(targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis) {
+			const renderer = this._renderer;
+			const blurMaterial = this._blurMaterial;
 
-				case EquirectangularReflectionMapping:
-				case EquirectangularRefractionMapping:
-					envMapTypeDefine = 'ENVMAP_TYPE_EQUIREC';
-					break;
+			if (direction !== 'latitudinal' && direction !== 'longitudinal') {
+				console.error('blur direction must be either latitudinal or longitudinal!');
+			} // Number of standard deviations at which to cut off the discrete approximation.
 
-				case SphericalReflectionMapping:
-					envMapTypeDefine = 'ENVMAP_TYPE_SPHERE';
-					break;
 
+			const STANDARD_DEVIATIONS = 3;
+			const blurMesh = new Mesh(_lodPlanes[lodOut], blurMaterial);
+			const blurUniforms = blurMaterial.uniforms;
+			const pixels = _sizeLods[lodIn] - 1;
+			const radiansPerPixel = isFinite(sigmaRadians) ? Math.PI / (2 * pixels) : 2 * Math.PI / (2 * MAX_SAMPLES - 1);
+			const sigmaPixels = sigmaRadians / radiansPerPixel;
+			const samples = isFinite(sigmaRadians) ? 1 + Math.floor(STANDARD_DEVIATIONS * sigmaPixels) : MAX_SAMPLES;
+
+			if (samples > MAX_SAMPLES) {
+				console.warn(`sigmaRadians, ${sigmaRadians}, is too large and will clip, as it requested ${samples} samples when the maximum is set to ${MAX_SAMPLES}`);
 			}
 
-			switch ( material.envMap.mapping ) {
+			const weights = [];
+			let sum = 0;
 
-				case CubeRefractionMapping:
-				case EquirectangularRefractionMapping:
-					envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
-					break;
+			for (let i = 0; i < MAX_SAMPLES; ++i) {
+				const x = i / sigmaPixels;
+				const weight = Math.exp(-x * x / 2);
+				weights.push(weight);
 
+				if (i == 0) {
+					sum += weight;
+				} else if (i < samples) {
+					sum += 2 * weight;
+				}
 			}
 
-			switch ( material.combine ) {
-
-				case MultiplyOperation:
-					envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
-					break;
-
-				case MixOperation:
-					envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
-					break;
+			for (let i = 0; i < weights.length; i++) {
+				weights[i] = weights[i] / sum;
+			}
 
-				case AddOperation:
-					envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
-					break;
+			blurUniforms['envMap'].value = targetIn.texture;
+			blurUniforms['samples'].value = samples;
+			blurUniforms['weights'].value = weights;
+			blurUniforms['latitudinal'].value = direction === 'latitudinal';
 
+			if (poleAxis) {
+				blurUniforms['poleAxis'].value = poleAxis;
 			}
 
-		}
+			blurUniforms['dTheta'].value = radiansPerPixel;
+			blurUniforms['mipInt'].value = LOD_MAX - lodIn;
+			blurUniforms['inputEncoding'].value = ENCODINGS[targetIn.texture.encoding];
+			blurUniforms['outputEncoding'].value = ENCODINGS[targetIn.texture.encoding];
+			const outputSize = _sizeLods[lodOut];
+			const x = 3 * Math.max(0, SIZE_MAX - 2 * outputSize);
+			const y = (lodOut === 0 ? 0 : 2 * SIZE_MAX) + 2 * outputSize * (lodOut > LOD_MAX - LOD_MIN ? lodOut - LOD_MAX + LOD_MIN : 0);
 
-		var gammaFactorDefine = ( renderer.gammaFactor > 0 ) ? renderer.gammaFactor : 1.0;
+			_setViewport(targetOut, x, y, 3 * outputSize, 2 * outputSize);
 
-		// console.log( 'building new program ' );
+			renderer.setRenderTarget(targetOut);
+			renderer.render(blurMesh, _flatCamera);
+		}
 
-		//
+	}
 
-		var customExtensions = generateExtensions( material.extensions, parameters, extensions );
+	function _isLDR(texture) {
+		if (texture === undefined || texture.type !== UnsignedByteType) return false;
+		return texture.encoding === LinearEncoding || texture.encoding === sRGBEncoding || texture.encoding === GammaEncoding;
+	}
 
-		var customDefines = generateDefines( defines );
+	function _createPlanes() {
+		const _lodPlanes = [];
+		const _sizeLods = [];
+		const _sigmas = [];
+		let lod = LOD_MAX;
 
-		//
+		for (let i = 0; i < TOTAL_LODS; i++) {
+			const sizeLod = Math.pow(2, lod);
 
-		var program = gl.createProgram();
+			_sizeLods.push(sizeLod);
 
-		var prefixVertex, prefixFragment;
+			let sigma = 1.0 / sizeLod;
 
-		if ( material.isRawShaderMaterial ) {
+			if (i > LOD_MAX - LOD_MIN) {
+				sigma = EXTRA_LOD_SIGMA[i - LOD_MAX + LOD_MIN - 1];
+			} else if (i == 0) {
+				sigma = 0;
+			}
 
-			prefixVertex = [
+			_sigmas.push(sigma);
 
-				customDefines
+			const texelSize = 1.0 / (sizeLod - 1);
+			const min = -texelSize / 2;
+			const max = 1 + texelSize / 2;
+			const uv1 = [min, min, max, min, max, max, min, min, max, max, min, max];
+			const cubeFaces = 6;
+			const vertices = 6;
+			const positionSize = 3;
+			const uvSize = 2;
+			const faceIndexSize = 1;
+			const position = new Float32Array(positionSize * vertices * cubeFaces);
+			const uv = new Float32Array(uvSize * vertices * cubeFaces);
+			const faceIndex = new Float32Array(faceIndexSize * vertices * cubeFaces);
 
-			].filter( filterEmptyLine ).join( '\n' );
+			for (let face = 0; face < cubeFaces; face++) {
+				const x = face % 3 * 2 / 3 - 1;
+				const y = face > 2 ? 0 : -1;
+				const coordinates = [x, y, 0, x + 2 / 3, y, 0, x + 2 / 3, y + 1, 0, x, y, 0, x + 2 / 3, y + 1, 0, x, y + 1, 0];
+				position.set(coordinates, positionSize * vertices * face);
+				uv.set(uv1, uvSize * vertices * face);
+				const fill = [face, face, face, face, face, face];
+				faceIndex.set(fill, faceIndexSize * vertices * face);
+			}
 
-			if ( prefixVertex.length > 0 ) {
+			const planes = new BufferGeometry();
+			planes.setAttribute('position', new BufferAttribute(position, positionSize));
+			planes.setAttribute('uv', new BufferAttribute(uv, uvSize));
+			planes.setAttribute('faceIndex', new BufferAttribute(faceIndex, faceIndexSize));
 
-				prefixVertex += '\n';
+			_lodPlanes.push(planes);
 
+			if (lod > LOD_MIN) {
+				lod--;
 			}
+		}
 
-			prefixFragment = [
+		return {
+			_lodPlanes,
+			_sizeLods,
+			_sigmas
+		};
+	}
 
-				customExtensions,
-				customDefines
+	function _createRenderTarget(params) {
+		const cubeUVRenderTarget = new WebGLRenderTarget(3 * SIZE_MAX, 3 * SIZE_MAX, params);
+		cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
+		cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
+		cubeUVRenderTarget.scissorTest = true;
+		return cubeUVRenderTarget;
+	}
 
-			].filter( filterEmptyLine ).join( '\n' );
+	function _setViewport(target, x, y, width, height) {
+		target.viewport.set(x, y, width, height);
+		target.scissor.set(x, y, width, height);
+	}
 
-			if ( prefixFragment.length > 0 ) {
-
-				prefixFragment += '\n';
-
-			}
-
-		} else {
-
-			prefixVertex = [
-
-				'precision ' + parameters.precision + ' float;',
-				'precision ' + parameters.precision + ' int;',
-
-				'#define SHADER_NAME ' + shader.name,
+	function _getBlurShader(maxSamples) {
+		const weights = new Float32Array(maxSamples);
+		const poleAxis = new Vector3(0, 1, 0);
+		const shaderMaterial = new RawShaderMaterial({
+			name: 'SphericalGaussianBlur',
+			defines: {
+				'n': maxSamples
+			},
+			uniforms: {
+				'envMap': {
+					value: null
+				},
+				'samples': {
+					value: 1
+				},
+				'weights': {
+					value: weights
+				},
+				'latitudinal': {
+					value: false
+				},
+				'dTheta': {
+					value: 0
+				},
+				'mipInt': {
+					value: 0
+				},
+				'poleAxis': {
+					value: poleAxis
+				},
+				'inputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				},
+				'outputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				}
+			},
+			vertexShader: _getCommonVertexShader(),
+			fragmentShader:
+			/* glsl */
+			`
 
-				customDefines,
+			precision mediump float;
+			precision mediump int;
 
-				parameters.supportsVertexTextures ? '#define VERTEX_TEXTURES' : '',
+			varying vec3 vOutputDirection;
 
-				'#define GAMMA_FACTOR ' + gammaFactorDefine,
+			uniform sampler2D envMap;
+			uniform int samples;
+			uniform float weights[ n ];
+			uniform bool latitudinal;
+			uniform float dTheta;
+			uniform float mipInt;
+			uniform vec3 poleAxis;
 
-				'#define MAX_BONES ' + parameters.maxBones,
-				( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',
-				( parameters.useFog && parameters.fogExp ) ? '#define FOG_EXP2' : '',
+			${_getEncodings()}
 
-				parameters.map ? '#define USE_MAP' : '',
-				parameters.envMap ? '#define USE_ENVMAP' : '',
-				parameters.envMap ? '#define ' + envMapModeDefine : '',
-				parameters.lightMap ? '#define USE_LIGHTMAP' : '',
-				parameters.aoMap ? '#define USE_AOMAP' : '',
-				parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
-				parameters.bumpMap ? '#define USE_BUMPMAP' : '',
-				parameters.normalMap ? '#define USE_NORMALMAP' : '',
-				parameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '',
-				parameters.specularMap ? '#define USE_SPECULARMAP' : '',
-				parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
-				parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
-				parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
-				parameters.vertexColors ? '#define USE_COLOR' : '',
+			#define ENVMAP_TYPE_CUBE_UV
+			#include <cube_uv_reflection_fragment>
 
-				parameters.flatShading ? '#define FLAT_SHADED' : '',
+			vec3 getSample( float theta, vec3 axis ) {
 
-				parameters.skinning ? '#define USE_SKINNING' : '',
-				parameters.useVertexTexture ? '#define BONE_TEXTURE' : '',
+				float cosTheta = cos( theta );
+				// Rodrigues' axis-angle rotation
+				vec3 sampleDirection = vOutputDirection * cosTheta
+					+ cross( axis, vOutputDirection ) * sin( theta )
+					+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );
 
-				parameters.morphTargets ? '#define USE_MORPHTARGETS' : '',
-				parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',
-				parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
-				parameters.flipSided ? '#define FLIP_SIDED' : '',
+				return bilinearCubeUV( envMap, sampleDirection, mipInt );
 
-				parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
-				parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',
+			}
 
-				parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',
+			void main() {
 
-				parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
-				parameters.logarithmicDepthBuffer && extensions.get( 'EXT_frag_depth' ) ? '#define USE_LOGDEPTHBUF_EXT' : '',
+				vec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );
 
-				'uniform mat4 modelMatrix;',
-				'uniform mat4 modelViewMatrix;',
-				'uniform mat4 projectionMatrix;',
-				'uniform mat4 viewMatrix;',
-				'uniform mat3 normalMatrix;',
-				'uniform vec3 cameraPosition;',
+				if ( all( equal( axis, vec3( 0.0 ) ) ) ) {
 
-				'attribute vec3 position;',
-				'attribute vec3 normal;',
-				'attribute vec2 uv;',
+					axis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );
 
-				'#ifdef USE_COLOR',
+				}
 
-				'	attribute vec3 color;',
+				axis = normalize( axis );
 
-				'#endif',
+				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
+				gl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );
 
-				'#ifdef USE_MORPHTARGETS',
+				for ( int i = 1; i < n; i++ ) {
 
-				'	attribute vec3 morphTarget0;',
-				'	attribute vec3 morphTarget1;',
-				'	attribute vec3 morphTarget2;',
-				'	attribute vec3 morphTarget3;',
+					if ( i >= samples ) {
 
-				'	#ifdef USE_MORPHNORMALS',
+						break;
 
-				'		attribute vec3 morphNormal0;',
-				'		attribute vec3 morphNormal1;',
-				'		attribute vec3 morphNormal2;',
-				'		attribute vec3 morphNormal3;',
+					}
 
-				'	#else',
+					float theta = dTheta * float( i );
+					gl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );
+					gl_FragColor.rgb += weights[ i ] * getSample( theta, axis );
 
-				'		attribute vec3 morphTarget4;',
-				'		attribute vec3 morphTarget5;',
-				'		attribute vec3 morphTarget6;',
-				'		attribute vec3 morphTarget7;',
+				}
 
-				'	#endif',
+				gl_FragColor = linearToOutputTexel( gl_FragColor );
 
-				'#endif',
+			}
+		`,
+			blending: NoBlending,
+			depthTest: false,
+			depthWrite: false
+		});
+		return shaderMaterial;
+	}
 
-				'#ifdef USE_SKINNING',
+	function _getEquirectShader() {
+		const texelSize = new Vector2(1, 1);
+		const shaderMaterial = new RawShaderMaterial({
+			name: 'EquirectangularToCubeUV',
+			uniforms: {
+				'envMap': {
+					value: null
+				},
+				'texelSize': {
+					value: texelSize
+				},
+				'inputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				},
+				'outputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				}
+			},
+			vertexShader: _getCommonVertexShader(),
+			fragmentShader:
+			/* glsl */
+			`
 
-				'	attribute vec4 skinIndex;',
-				'	attribute vec4 skinWeight;',
+			precision mediump float;
+			precision mediump int;
 
-				'#endif',
+			varying vec3 vOutputDirection;
 
-				'\n'
+			uniform sampler2D envMap;
+			uniform vec2 texelSize;
 
-			].filter( filterEmptyLine ).join( '\n' );
+			${_getEncodings()}
 
-			prefixFragment = [
+			#include <common>
 
-				customExtensions,
+			void main() {
 
-				'precision ' + parameters.precision + ' float;',
-				'precision ' + parameters.precision + ' int;',
+				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
 
-				'#define SHADER_NAME ' + shader.name,
+				vec3 outputDirection = normalize( vOutputDirection );
+				vec2 uv = equirectUv( outputDirection );
 
-				customDefines,
+				vec2 f = fract( uv / texelSize - 0.5 );
+				uv -= f * texelSize;
+				vec3 tl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
+				uv.x += texelSize.x;
+				vec3 tr = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
+				uv.y += texelSize.y;
+				vec3 br = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
+				uv.x -= texelSize.x;
+				vec3 bl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
 
-				parameters.alphaTest ? '#define ALPHATEST ' + parameters.alphaTest : '',
+				vec3 tm = mix( tl, tr, f.x );
+				vec3 bm = mix( bl, br, f.x );
+				gl_FragColor.rgb = mix( tm, bm, f.y );
 
-				'#define GAMMA_FACTOR ' + gammaFactorDefine,
+				gl_FragColor = linearToOutputTexel( gl_FragColor );
 
-				( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',
-				( parameters.useFog && parameters.fogExp ) ? '#define FOG_EXP2' : '',
+			}
+		`,
+			blending: NoBlending,
+			depthTest: false,
+			depthWrite: false
+		});
+		return shaderMaterial;
+	}
 
-				parameters.map ? '#define USE_MAP' : '',
-				parameters.envMap ? '#define USE_ENVMAP' : '',
-				parameters.envMap ? '#define ' + envMapTypeDefine : '',
-				parameters.envMap ? '#define ' + envMapModeDefine : '',
-				parameters.envMap ? '#define ' + envMapBlendingDefine : '',
-				parameters.lightMap ? '#define USE_LIGHTMAP' : '',
-				parameters.aoMap ? '#define USE_AOMAP' : '',
-				parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
-				parameters.bumpMap ? '#define USE_BUMPMAP' : '',
-				parameters.normalMap ? '#define USE_NORMALMAP' : '',
-				parameters.specularMap ? '#define USE_SPECULARMAP' : '',
-				parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
-				parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
-				parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
-				parameters.vertexColors ? '#define USE_COLOR' : '',
+	function _getCubemapShader() {
+		const shaderMaterial = new RawShaderMaterial({
+			name: 'CubemapToCubeUV',
+			uniforms: {
+				'envMap': {
+					value: null
+				},
+				'inputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				},
+				'outputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				}
+			},
+			vertexShader: _getCommonVertexShader(),
+			fragmentShader:
+			/* glsl */
+			`
 
-				parameters.gradientMap ? '#define USE_GRADIENTMAP' : '',
+			precision mediump float;
+			precision mediump int;
 
-				parameters.flatShading ? '#define FLAT_SHADED' : '',
+			varying vec3 vOutputDirection;
 
-				parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
-				parameters.flipSided ? '#define FLIP_SIDED' : '',
+			uniform samplerCube envMap;
 
-				parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
-				parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',
+			${_getEncodings()}
 
-				parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',
+			void main() {
 
-				parameters.physicallyCorrectLights ? '#define PHYSICALLY_CORRECT_LIGHTS' : '',
+				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
+				gl_FragColor.rgb = envMapTexelToLinear( textureCube( envMap, vec3( - vOutputDirection.x, vOutputDirection.yz ) ) ).rgb;
+				gl_FragColor = linearToOutputTexel( gl_FragColor );
 
-				parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
-				parameters.logarithmicDepthBuffer && extensions.get( 'EXT_frag_depth' ) ? '#define USE_LOGDEPTHBUF_EXT' : '',
+			}
+		`,
+			blending: NoBlending,
+			depthTest: false,
+			depthWrite: false
+		});
+		return shaderMaterial;
+	}
 
-				parameters.envMap && extensions.get( 'EXT_shader_texture_lod' ) ? '#define TEXTURE_LOD_EXT' : '',
+	function _getCommonVertexShader() {
+		return (
+			/* glsl */
+			`
 
-				'uniform mat4 viewMatrix;',
-				'uniform vec3 cameraPosition;',
+		precision mediump float;
+		precision mediump int;
 
-				( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',
-				( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '', // this code is required here because it is used by the toneMapping() function defined below
-				( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',
+		attribute vec3 position;
+		attribute vec2 uv;
+		attribute float faceIndex;
 
-				parameters.dithering ? '#define DITHERING' : '',
+		varying vec3 vOutputDirection;
 
-				( parameters.outputEncoding || parameters.mapEncoding || parameters.envMapEncoding || parameters.emissiveMapEncoding ) ? ShaderChunk[ 'encodings_pars_fragment' ] : '', // this code is required here because it is used by the various encoding/decoding function defined below
-				parameters.mapEncoding ? getTexelDecodingFunction( 'mapTexelToLinear', parameters.mapEncoding ) : '',
-				parameters.envMapEncoding ? getTexelDecodingFunction( 'envMapTexelToLinear', parameters.envMapEncoding ) : '',
-				parameters.emissiveMapEncoding ? getTexelDecodingFunction( 'emissiveMapTexelToLinear', parameters.emissiveMapEncoding ) : '',
-				parameters.outputEncoding ? getTexelEncodingFunction( 'linearToOutputTexel', parameters.outputEncoding ) : '',
+		// RH coordinate system; PMREM face-indexing convention
+		vec3 getDirection( vec2 uv, float face ) {
 
-				parameters.depthPacking ? '#define DEPTH_PACKING ' + material.depthPacking : '',
+			uv = 2.0 * uv - 1.0;
 
-				'\n'
+			vec3 direction = vec3( uv, 1.0 );
 
-			].filter( filterEmptyLine ).join( '\n' );
+			if ( face == 0.0 ) {
 
-		}
+				direction = direction.zyx; // ( 1, v, u ) pos x
 
-		vertexShader = parseIncludes( vertexShader );
-		vertexShader = replaceLightNums( vertexShader, parameters );
-		vertexShader = replaceClippingPlaneNums( vertexShader, parameters );
+			} else if ( face == 1.0 ) {
 
-		fragmentShader = parseIncludes( fragmentShader );
-		fragmentShader = replaceLightNums( fragmentShader, parameters );
-		fragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );
+				direction = direction.xzy;
+				direction.xz *= -1.0; // ( -u, 1, -v ) pos y
 
-		vertexShader = unrollLoops( vertexShader );
-		fragmentShader = unrollLoops( fragmentShader );
+			} else if ( face == 2.0 ) {
 
-		var vertexGlsl = prefixVertex + vertexShader;
-		var fragmentGlsl = prefixFragment + fragmentShader;
+				direction.x *= -1.0; // ( -u, v, 1 ) pos z
 
-		// console.log( '*VERTEX*', vertexGlsl );
-		// console.log( '*FRAGMENT*', fragmentGlsl );
+			} else if ( face == 3.0 ) {
 
-		var glVertexShader = WebGLShader( gl, gl.VERTEX_SHADER, vertexGlsl );
-		var glFragmentShader = WebGLShader( gl, gl.FRAGMENT_SHADER, fragmentGlsl );
+				direction = direction.zyx;
+				direction.xz *= -1.0; // ( -1, v, -u ) neg x
 
-		gl.attachShader( program, glVertexShader );
-		gl.attachShader( program, glFragmentShader );
+			} else if ( face == 4.0 ) {
 
-		// Force a particular attribute to index 0.
+				direction = direction.xzy;
+				direction.xy *= -1.0; // ( -u, -1, v ) neg y
 
-		if ( material.index0AttributeName !== undefined ) {
+			} else if ( face == 5.0 ) {
 
-			gl.bindAttribLocation( program, 0, material.index0AttributeName );
+				direction.z *= -1.0; // ( u, v, -1 ) neg z
 
-		} else if ( parameters.morphTargets === true ) {
+			}
 
-			// programs with morphTargets displace position out of attribute 0
-			gl.bindAttribLocation( program, 0, 'position' );
+			return direction;
 
 		}
 
-		gl.linkProgram( program );
-
-		var programLog = gl.getProgramInfoLog( program ).trim();
-		var vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();
-		var fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();
+		void main() {
 
-		var runnable = true;
-		var haveDiagnostics = true;
+			vOutputDirection = getDirection( uv, faceIndex );
+			gl_Position = vec4( position, 1.0 );
 
-		// console.log( '**VERTEX**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( glVertexShader ) );
-		// console.log( '**FRAGMENT**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( glFragmentShader ) );
+		}
+	`
+		);
+	}
 
-		if ( gl.getProgramParameter( program, gl.LINK_STATUS ) === false ) {
+	function _getEncodings() {
+		return (
+			/* glsl */
+			`
 
-			runnable = false;
+		uniform int inputEncoding;
+		uniform int outputEncoding;
 
-			console.error( 'THREE.WebGLProgram: shader error: ', gl.getError(), 'gl.VALIDATE_STATUS', gl.getProgramParameter( program, gl.VALIDATE_STATUS ), 'gl.getProgramInfoLog', programLog, vertexLog, fragmentLog );
+		#include <encodings_pars_fragment>
 
-		} else if ( programLog !== '' ) {
+		vec4 inputTexelToLinear( vec4 value ) {
 
-			console.warn( 'THREE.WebGLProgram: gl.getProgramInfoLog()', programLog );
+			if ( inputEncoding == 0 ) {
 
-		} else if ( vertexLog === '' || fragmentLog === '' ) {
+				return value;
 
-			haveDiagnostics = false;
+			} else if ( inputEncoding == 1 ) {
 
-		}
+				return sRGBToLinear( value );
 
-		if ( haveDiagnostics ) {
+			} else if ( inputEncoding == 2 ) {
 
-			this.diagnostics = {
+				return RGBEToLinear( value );
 
-				runnable: runnable,
-				material: material,
+			} else if ( inputEncoding == 3 ) {
 
-				programLog: programLog,
+				return RGBMToLinear( value, 7.0 );
 
-				vertexShader: {
+			} else if ( inputEncoding == 4 ) {
 
-					log: vertexLog,
-					prefix: prefixVertex
+				return RGBMToLinear( value, 16.0 );
 
-				},
+			} else if ( inputEncoding == 5 ) {
 
-				fragmentShader: {
+				return RGBDToLinear( value, 256.0 );
 
-					log: fragmentLog,
-					prefix: prefixFragment
+			} else {
 
-				}
+				return GammaToLinear( value, 2.2 );
 
-			};
+			}
 
 		}
 
-		// clean up
+		vec4 linearToOutputTexel( vec4 value ) {
 
-		gl.deleteShader( glVertexShader );
-		gl.deleteShader( glFragmentShader );
+			if ( outputEncoding == 0 ) {
 
-		// set up caching for uniform locations
+				return value;
 
-		var cachedUniforms;
+			} else if ( outputEncoding == 1 ) {
 
-		this.getUniforms = function () {
+				return LinearTosRGB( value );
 
-			if ( cachedUniforms === undefined ) {
+			} else if ( outputEncoding == 2 ) {
 
-				cachedUniforms = new WebGLUniforms( gl, program, renderer );
+				return LinearToRGBE( value );
 
-			}
+			} else if ( outputEncoding == 3 ) {
 
-			return cachedUniforms;
+				return LinearToRGBM( value, 7.0 );
 
-		};
+			} else if ( outputEncoding == 4 ) {
 
-		// set up caching for attribute locations
+				return LinearToRGBM( value, 16.0 );
 
-		var cachedAttributes;
+			} else if ( outputEncoding == 5 ) {
 
-		this.getAttributes = function () {
+				return LinearToRGBD( value, 256.0 );
 
-			if ( cachedAttributes === undefined ) {
+			} else {
 
-				cachedAttributes = fetchAttributeLocations( gl, program );
+				return LinearToGamma( value, 2.2 );
 
 			}
 
-			return cachedAttributes;
+		}
 
-		};
+		vec4 envMapTexelToLinear( vec4 color ) {
 
-		// free resource
+			return inputTexelToLinear( color );
 
-		this.destroy = function () {
+		}
+	`
+		);
+	}
 
-			gl.deleteProgram( program );
-			this.program = undefined;
+	const LineStrip = 0;
+	const LinePieces = 1;
+	const NoColors = 0;
+	const FaceColors = 1;
+	const VertexColors = 2;
+	function MeshFaceMaterial(materials) {
+		console.warn('THREE.MeshFaceMaterial has been removed. Use an Array instead.');
+		return materials;
+	}
+	function MultiMaterial(materials = []) {
+		console.warn('THREE.MultiMaterial has been removed. Use an Array instead.');
+		materials.isMultiMaterial = true;
+		materials.materials = materials;
 
+		materials.clone = function () {
+			return materials.slice();
 		};
 
-		// DEPRECATED
-
-		Object.defineProperties( this, {
-
-			uniforms: {
-				get: function () {
-
-					console.warn( 'THREE.WebGLProgram: .uniforms is now .getUniforms().' );
-					return this.getUniforms();
-
-				}
-			},
-
-			attributes: {
-				get: function () {
-
-					console.warn( 'THREE.WebGLProgram: .attributes is now .getAttributes().' );
-					return this.getAttributes();
-
-				}
-			}
+		return materials;
+	}
+	function PointCloud(geometry, material) {
+		console.warn('THREE.PointCloud has been renamed to THREE.Points.');
+		return new Points(geometry, material);
+	}
+	function Particle(material) {
+		console.warn('THREE.Particle has been renamed to THREE.Sprite.');
+		return new Sprite(material);
+	}
+	function ParticleSystem(geometry, material) {
+		console.warn('THREE.ParticleSystem has been renamed to THREE.Points.');
+		return new Points(geometry, material);
+	}
+	function PointCloudMaterial(parameters) {
+		console.warn('THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial.');
+		return new PointsMaterial(parameters);
+	}
+	function ParticleBasicMaterial(parameters) {
+		console.warn('THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial.');
+		return new PointsMaterial(parameters);
+	}
+	function ParticleSystemMaterial(parameters) {
+		console.warn('THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial.');
+		return new PointsMaterial(parameters);
+	}
+	function Vertex(x, y, z) {
+		console.warn('THREE.Vertex has been removed. Use THREE.Vector3 instead.');
+		return new Vector3(x, y, z);
+	} //
 
-		} );
+	function DynamicBufferAttribute(array, itemSize) {
+		console.warn('THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setUsage( THREE.DynamicDrawUsage ) instead.');
+		return new BufferAttribute(array, itemSize).setUsage(DynamicDrawUsage);
+	}
+	function Int8Attribute(array, itemSize) {
+		console.warn('THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead.');
+		return new Int8BufferAttribute(array, itemSize);
+	}
+	function Uint8Attribute(array, itemSize) {
+		console.warn('THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead.');
+		return new Uint8BufferAttribute(array, itemSize);
+	}
+	function Uint8ClampedAttribute(array, itemSize) {
+		console.warn('THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead.');
+		return new Uint8ClampedBufferAttribute(array, itemSize);
+	}
+	function Int16Attribute(array, itemSize) {
+		console.warn('THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead.');
+		return new Int16BufferAttribute(array, itemSize);
+	}
+	function Uint16Attribute(array, itemSize) {
+		console.warn('THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead.');
+		return new Uint16BufferAttribute(array, itemSize);
+	}
+	function Int32Attribute(array, itemSize) {
+		console.warn('THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead.');
+		return new Int32BufferAttribute(array, itemSize);
+	}
+	function Uint32Attribute(array, itemSize) {
+		console.warn('THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead.');
+		return new Uint32BufferAttribute(array, itemSize);
+	}
+	function Float32Attribute(array, itemSize) {
+		console.warn('THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead.');
+		return new Float32BufferAttribute(array, itemSize);
+	}
+	function Float64Attribute(array, itemSize) {
+		console.warn('THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead.');
+		return new Float64BufferAttribute(array, itemSize);
+	} //
 
+	Curve.create = function (construct, getPoint) {
+		console.log('THREE.Curve.create() has been deprecated');
+		construct.prototype = Object.create(Curve.prototype);
+		construct.prototype.constructor = construct;
+		construct.prototype.getPoint = getPoint;
+		return construct;
+	}; //
 
-		//
 
-		this.id = programIdCount ++;
-		this.code = code;
-		this.usedTimes = 1;
-		this.program = program;
-		this.vertexShader = glVertexShader;
-		this.fragmentShader = glFragmentShader;
+	Path.prototype.fromPoints = function (points) {
+		console.warn('THREE.Path: .fromPoints() has been renamed to .setFromPoints().');
+		return this.setFromPoints(points);
+	}; //
 
-		return this;
 
+	function AxisHelper(size) {
+		console.warn('THREE.AxisHelper has been renamed to THREE.AxesHelper.');
+		return new AxesHelper(size);
+	}
+	function BoundingBoxHelper(object, color) {
+		console.warn('THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead.');
+		return new BoxHelper(object, color);
+	}
+	function EdgesHelper(object, hex) {
+		console.warn('THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead.');
+		return new LineSegments(new EdgesGeometry(object.geometry), new LineBasicMaterial({
+			color: hex !== undefined ? hex : 0xffffff
+		}));
 	}
 
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function WebGLPrograms( renderer, extensions, capabilities ) {
-
-		var programs = [];
-
-		var shaderIDs = {
-			MeshDepthMaterial: 'depth',
-			MeshDistanceMaterial: 'distanceRGBA',
-			MeshNormalMaterial: 'normal',
-			MeshBasicMaterial: 'basic',
-			MeshLambertMaterial: 'lambert',
-			MeshPhongMaterial: 'phong',
-			MeshToonMaterial: 'phong',
-			MeshStandardMaterial: 'physical',
-			MeshPhysicalMaterial: 'physical',
-			LineBasicMaterial: 'basic',
-			LineDashedMaterial: 'dashed',
-			PointsMaterial: 'points',
-			ShadowMaterial: 'shadow'
-		};
-
-		var parameterNames = [
-			"precision", "supportsVertexTextures", "map", "mapEncoding", "envMap", "envMapMode", "envMapEncoding",
-			"lightMap", "aoMap", "emissiveMap", "emissiveMapEncoding", "bumpMap", "normalMap", "displacementMap", "specularMap",
-			"roughnessMap", "metalnessMap", "gradientMap",
-			"alphaMap", "combine", "vertexColors", "fog", "useFog", "fogExp",
-			"flatShading", "sizeAttenuation", "logarithmicDepthBuffer", "skinning",
-			"maxBones", "useVertexTexture", "morphTargets", "morphNormals",
-			"maxMorphTargets", "maxMorphNormals", "premultipliedAlpha",
-			"numDirLights", "numPointLights", "numSpotLights", "numHemiLights", "numRectAreaLights",
-			"shadowMapEnabled", "shadowMapType", "toneMapping", 'physicallyCorrectLights',
-			"alphaTest", "doubleSided", "flipSided", "numClippingPlanes", "numClipIntersection", "depthPacking", "dithering"
-		];
+	GridHelper.prototype.setColors = function () {
+		console.error('THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.');
+	};
 
+	SkeletonHelper.prototype.update = function () {
+		console.error('THREE.SkeletonHelper: update() no longer needs to be called.');
+	};
 
-		function allocateBones( object ) {
+	function WireframeHelper(object, hex) {
+		console.warn('THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead.');
+		return new LineSegments(new WireframeGeometry(object.geometry), new LineBasicMaterial({
+			color: hex !== undefined ? hex : 0xffffff
+		}));
+	} //
 
-			var skeleton = object.skeleton;
-			var bones = skeleton.bones;
+	Loader.prototype.extractUrlBase = function (url) {
+		console.warn('THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead.');
+		return LoaderUtils.extractUrlBase(url);
+	};
 
-			if ( capabilities.floatVertexTextures ) {
+	Loader.Handlers = {
+		add: function ()
+		/* regex, loader */
+		{
+			console.error('THREE.Loader: Handlers.add() has been removed. Use LoadingManager.addHandler() instead.');
+		},
+		get: function ()
+		/* file */
+		{
+			console.error('THREE.Loader: Handlers.get() has been removed. Use LoadingManager.getHandler() instead.');
+		}
+	};
+	function XHRLoader(manager) {
+		console.warn('THREE.XHRLoader has been renamed to THREE.FileLoader.');
+		return new FileLoader(manager);
+	}
+	function BinaryTextureLoader(manager) {
+		console.warn('THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader.');
+		return new DataTextureLoader(manager);
+	} //
+
+	Box2.prototype.center = function (optionalTarget) {
+		console.warn('THREE.Box2: .center() has been renamed to .getCenter().');
+		return this.getCenter(optionalTarget);
+	};
 
-				return 1024;
+	Box2.prototype.empty = function () {
+		console.warn('THREE.Box2: .empty() has been renamed to .isEmpty().');
+		return this.isEmpty();
+	};
 
-			} else {
+	Box2.prototype.isIntersectionBox = function (box) {
+		console.warn('THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox().');
+		return this.intersectsBox(box);
+	};
 
-				// default for when object is not specified
-				// ( for example when prebuilding shader to be used with multiple objects )
-				//
-				//  - leave some extra space for other uniforms
-				//  - limit here is ANGLE's 254 max uniform vectors
-				//    (up to 54 should be safe)
+	Box2.prototype.size = function (optionalTarget) {
+		console.warn('THREE.Box2: .size() has been renamed to .getSize().');
+		return this.getSize(optionalTarget);
+	}; //
 
-				var nVertexUniforms = capabilities.maxVertexUniforms;
-				var nVertexMatrices = Math.floor( ( nVertexUniforms - 20 ) / 4 );
 
-				var maxBones = Math.min( nVertexMatrices, bones.length );
+	Box3.prototype.center = function (optionalTarget) {
+		console.warn('THREE.Box3: .center() has been renamed to .getCenter().');
+		return this.getCenter(optionalTarget);
+	};
 
-				if ( maxBones < bones.length ) {
+	Box3.prototype.empty = function () {
+		console.warn('THREE.Box3: .empty() has been renamed to .isEmpty().');
+		return this.isEmpty();
+	};
 
-					console.warn( 'THREE.WebGLRenderer: Skeleton has ' + bones.length + ' bones. This GPU supports ' + maxBones + '.' );
-					return 0;
+	Box3.prototype.isIntersectionBox = function (box) {
+		console.warn('THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox().');
+		return this.intersectsBox(box);
+	};
 
-				}
+	Box3.prototype.isIntersectionSphere = function (sphere) {
+		console.warn('THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere().');
+		return this.intersectsSphere(sphere);
+	};
 
-				return maxBones;
+	Box3.prototype.size = function (optionalTarget) {
+		console.warn('THREE.Box3: .size() has been renamed to .getSize().');
+		return this.getSize(optionalTarget);
+	}; //
 
-			}
 
-		}
+	Sphere.prototype.empty = function () {
+		console.warn('THREE.Sphere: .empty() has been renamed to .isEmpty().');
+		return this.isEmpty();
+	}; //
 
-		function getTextureEncodingFromMap( map, gammaOverrideLinear ) {
 
-			var encoding;
+	Frustum.prototype.setFromMatrix = function (m) {
+		console.warn('THREE.Frustum: .setFromMatrix() has been renamed to .setFromProjectionMatrix().');
+		return this.setFromProjectionMatrix(m);
+	}; //
 
-			if ( ! map ) {
 
-				encoding = LinearEncoding;
+	Line3.prototype.center = function (optionalTarget) {
+		console.warn('THREE.Line3: .center() has been renamed to .getCenter().');
+		return this.getCenter(optionalTarget);
+	}; //
 
-			} else if ( map.isTexture ) {
 
-				encoding = map.encoding;
+	Matrix3.prototype.flattenToArrayOffset = function (array, offset) {
+		console.warn('THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.');
+		return this.toArray(array, offset);
+	};
 
-			} else if ( map.isWebGLRenderTarget ) {
+	Matrix3.prototype.multiplyVector3 = function (vector) {
+		console.warn('THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.');
+		return vector.applyMatrix3(this);
+	};
 
-				console.warn( "THREE.WebGLPrograms.getTextureEncodingFromMap: don't use render targets as textures. Use their .texture property instead." );
-				encoding = map.texture.encoding;
+	Matrix3.prototype.multiplyVector3Array = function ()
+	/* a */
+	{
+		console.error('THREE.Matrix3: .multiplyVector3Array() has been removed.');
+	};
 
-			}
+	Matrix3.prototype.applyToBufferAttribute = function (attribute) {
+		console.warn('THREE.Matrix3: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix3( matrix ) instead.');
+		return attribute.applyMatrix3(this);
+	};
 
-			// add backwards compatibility for WebGLRenderer.gammaInput/gammaOutput parameter, should probably be removed at some point.
-			if ( encoding === LinearEncoding && gammaOverrideLinear ) {
+	Matrix3.prototype.applyToVector3Array = function ()
+	/* array, offset, length */
+	{
+		console.error('THREE.Matrix3: .applyToVector3Array() has been removed.');
+	};
 
-				encoding = GammaEncoding;
+	Matrix3.prototype.getInverse = function (matrix) {
+		console.warn('THREE.Matrix3: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.');
+		return this.copy(matrix).invert();
+	}; //
 
-			}
 
-			return encoding;
+	Matrix4.prototype.extractPosition = function (m) {
+		console.warn('THREE.Matrix4: .extractPosition() has been renamed to .copyPosition().');
+		return this.copyPosition(m);
+	};
 
-		}
+	Matrix4.prototype.flattenToArrayOffset = function (array, offset) {
+		console.warn('THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.');
+		return this.toArray(array, offset);
+	};
 
-		this.getParameters = function ( material, lights, shadows, fog, nClipPlanes, nClipIntersection, object ) {
+	Matrix4.prototype.getPosition = function () {
+		console.warn('THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.');
+		return new Vector3().setFromMatrixColumn(this, 3);
+	};
 
-			var shaderID = shaderIDs[ material.type ];
+	Matrix4.prototype.setRotationFromQuaternion = function (q) {
+		console.warn('THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion().');
+		return this.makeRotationFromQuaternion(q);
+	};
 
-			// heuristics to create shader parameters according to lights in the scene
-			// (not to blow over maxLights budget)
+	Matrix4.prototype.multiplyToArray = function () {
+		console.warn('THREE.Matrix4: .multiplyToArray() has been removed.');
+	};
 
-			var maxBones = object.isSkinnedMesh ? allocateBones( object ) : 0;
-			var precision = capabilities.precision;
+	Matrix4.prototype.multiplyVector3 = function (vector) {
+		console.warn('THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead.');
+		return vector.applyMatrix4(this);
+	};
 
-			if ( material.precision !== null ) {
+	Matrix4.prototype.multiplyVector4 = function (vector) {
+		console.warn('THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.');
+		return vector.applyMatrix4(this);
+	};
 
-				precision = capabilities.getMaxPrecision( material.precision );
+	Matrix4.prototype.multiplyVector3Array = function ()
+	/* a */
+	{
+		console.error('THREE.Matrix4: .multiplyVector3Array() has been removed.');
+	};
 
-				if ( precision !== material.precision ) {
+	Matrix4.prototype.rotateAxis = function (v) {
+		console.warn('THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead.');
+		v.transformDirection(this);
+	};
 
-					console.warn( 'THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.' );
+	Matrix4.prototype.crossVector = function (vector) {
+		console.warn('THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead.');
+		return vector.applyMatrix4(this);
+	};
 
-				}
+	Matrix4.prototype.translate = function () {
+		console.error('THREE.Matrix4: .translate() has been removed.');
+	};
 
-			}
+	Matrix4.prototype.rotateX = function () {
+		console.error('THREE.Matrix4: .rotateX() has been removed.');
+	};
 
-			var currentRenderTarget = renderer.getRenderTarget();
+	Matrix4.prototype.rotateY = function () {
+		console.error('THREE.Matrix4: .rotateY() has been removed.');
+	};
 
-			var parameters = {
+	Matrix4.prototype.rotateZ = function () {
+		console.error('THREE.Matrix4: .rotateZ() has been removed.');
+	};
 
-				shaderID: shaderID,
+	Matrix4.prototype.rotateByAxis = function () {
+		console.error('THREE.Matrix4: .rotateByAxis() has been removed.');
+	};
 
-				precision: precision,
-				supportsVertexTextures: capabilities.vertexTextures,
-				outputEncoding: getTextureEncodingFromMap( ( ! currentRenderTarget ) ? null : currentRenderTarget.texture, renderer.gammaOutput ),
-				map: !! material.map,
-				mapEncoding: getTextureEncodingFromMap( material.map, renderer.gammaInput ),
-				envMap: !! material.envMap,
-				envMapMode: material.envMap && material.envMap.mapping,
-				envMapEncoding: getTextureEncodingFromMap( material.envMap, renderer.gammaInput ),
-				envMapCubeUV: ( !! material.envMap ) && ( ( material.envMap.mapping === CubeUVReflectionMapping ) || ( material.envMap.mapping === CubeUVRefractionMapping ) ),
-				lightMap: !! material.lightMap,
-				aoMap: !! material.aoMap,
-				emissiveMap: !! material.emissiveMap,
-				emissiveMapEncoding: getTextureEncodingFromMap( material.emissiveMap, renderer.gammaInput ),
-				bumpMap: !! material.bumpMap,
-				normalMap: !! material.normalMap,
-				displacementMap: !! material.displacementMap,
-				roughnessMap: !! material.roughnessMap,
-				metalnessMap: !! material.metalnessMap,
-				specularMap: !! material.specularMap,
-				alphaMap: !! material.alphaMap,
-
-				gradientMap: !! material.gradientMap,
+	Matrix4.prototype.applyToBufferAttribute = function (attribute) {
+		console.warn('THREE.Matrix4: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix4( matrix ) instead.');
+		return attribute.applyMatrix4(this);
+	};
 
-				combine: material.combine,
+	Matrix4.prototype.applyToVector3Array = function ()
+	/* array, offset, length */
+	{
+		console.error('THREE.Matrix4: .applyToVector3Array() has been removed.');
+	};
 
-				vertexColors: material.vertexColors,
+	Matrix4.prototype.makeFrustum = function (left, right, bottom, top, near, far) {
+		console.warn('THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead.');
+		return this.makePerspective(left, right, top, bottom, near, far);
+	};
 
-				fog: !! fog,
-				useFog: material.fog,
-				fogExp: ( fog && fog.isFogExp2 ),
+	Matrix4.prototype.getInverse = function (matrix) {
+		console.warn('THREE.Matrix4: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.');
+		return this.copy(matrix).invert();
+	}; //
 
-				flatShading: material.flatShading,
 
-				sizeAttenuation: material.sizeAttenuation,
-				logarithmicDepthBuffer: capabilities.logarithmicDepthBuffer,
+	Plane.prototype.isIntersectionLine = function (line) {
+		console.warn('THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine().');
+		return this.intersectsLine(line);
+	}; //
 
-				skinning: material.skinning && maxBones > 0,
-				maxBones: maxBones,
-				useVertexTexture: capabilities.floatVertexTextures,
 
-				morphTargets: material.morphTargets,
-				morphNormals: material.morphNormals,
-				maxMorphTargets: renderer.maxMorphTargets,
-				maxMorphNormals: renderer.maxMorphNormals,
+	Quaternion.prototype.multiplyVector3 = function (vector) {
+		console.warn('THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.');
+		return vector.applyQuaternion(this);
+	};
 
-				numDirLights: lights.directional.length,
-				numPointLights: lights.point.length,
-				numSpotLights: lights.spot.length,
-				numRectAreaLights: lights.rectArea.length,
-				numHemiLights: lights.hemi.length,
+	Quaternion.prototype.inverse = function () {
+		console.warn('THREE.Quaternion: .inverse() has been renamed to invert().');
+		return this.invert();
+	}; //
 
-				numClippingPlanes: nClipPlanes,
-				numClipIntersection: nClipIntersection,
 
-				dithering: material.dithering,
+	Ray.prototype.isIntersectionBox = function (box) {
+		console.warn('THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox().');
+		return this.intersectsBox(box);
+	};
 
-				shadowMapEnabled: renderer.shadowMap.enabled && object.receiveShadow && shadows.length > 0,
-				shadowMapType: renderer.shadowMap.type,
+	Ray.prototype.isIntersectionPlane = function (plane) {
+		console.warn('THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane().');
+		return this.intersectsPlane(plane);
+	};
 
-				toneMapping: renderer.toneMapping,
-				physicallyCorrectLights: renderer.physicallyCorrectLights,
+	Ray.prototype.isIntersectionSphere = function (sphere) {
+		console.warn('THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere().');
+		return this.intersectsSphere(sphere);
+	}; //
 
-				premultipliedAlpha: material.premultipliedAlpha,
 
-				alphaTest: material.alphaTest,
-				doubleSided: material.side === DoubleSide,
-				flipSided: material.side === BackSide,
+	Triangle.prototype.area = function () {
+		console.warn('THREE.Triangle: .area() has been renamed to .getArea().');
+		return this.getArea();
+	};
 
-				depthPacking: ( material.depthPacking !== undefined ) ? material.depthPacking : false
+	Triangle.prototype.barycoordFromPoint = function (point, target) {
+		console.warn('THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().');
+		return this.getBarycoord(point, target);
+	};
 
-			};
+	Triangle.prototype.midpoint = function (target) {
+		console.warn('THREE.Triangle: .midpoint() has been renamed to .getMidpoint().');
+		return this.getMidpoint(target);
+	};
 
-			return parameters;
+	Triangle.prototypenormal = function (target) {
+		console.warn('THREE.Triangle: .normal() has been renamed to .getNormal().');
+		return this.getNormal(target);
+	};
 
-		};
+	Triangle.prototype.plane = function (target) {
+		console.warn('THREE.Triangle: .plane() has been renamed to .getPlane().');
+		return this.getPlane(target);
+	};
 
-		this.getProgramCode = function ( material, parameters ) {
+	Triangle.barycoordFromPoint = function (point, a, b, c, target) {
+		console.warn('THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().');
+		return Triangle.getBarycoord(point, a, b, c, target);
+	};
 
-			var array = [];
+	Triangle.normal = function (a, b, c, target) {
+		console.warn('THREE.Triangle: .normal() has been renamed to .getNormal().');
+		return Triangle.getNormal(a, b, c, target);
+	}; //
 
-			if ( parameters.shaderID ) {
 
-				array.push( parameters.shaderID );
+	Shape.prototype.extractAllPoints = function (divisions) {
+		console.warn('THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead.');
+		return this.extractPoints(divisions);
+	};
 
-			} else {
+	Shape.prototype.extrude = function (options) {
+		console.warn('THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead.');
+		return new ExtrudeGeometry(this, options);
+	};
 
-				array.push( material.fragmentShader );
-				array.push( material.vertexShader );
+	Shape.prototype.makeGeometry = function (options) {
+		console.warn('THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead.');
+		return new ShapeGeometry(this, options);
+	}; //
 
-			}
 
-			if ( material.defines !== undefined ) {
+	Vector2.prototype.fromAttribute = function (attribute, index, offset) {
+		console.warn('THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute().');
+		return this.fromBufferAttribute(attribute, index, offset);
+	};
 
-				for ( var name in material.defines ) {
+	Vector2.prototype.distanceToManhattan = function (v) {
+		console.warn('THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo().');
+		return this.manhattanDistanceTo(v);
+	};
 
-					array.push( name );
-					array.push( material.defines[ name ] );
+	Vector2.prototype.lengthManhattan = function () {
+		console.warn('THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength().');
+		return this.manhattanLength();
+	}; //
 
-				}
 
-			}
+	Vector3.prototype.setEulerFromRotationMatrix = function () {
+		console.error('THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.');
+	};
 
-			for ( var i = 0; i < parameterNames.length; i ++ ) {
+	Vector3.prototype.setEulerFromQuaternion = function () {
+		console.error('THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.');
+	};
 
-				array.push( parameters[ parameterNames[ i ] ] );
+	Vector3.prototype.getPositionFromMatrix = function (m) {
+		console.warn('THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition().');
+		return this.setFromMatrixPosition(m);
+	};
 
-			}
+	Vector3.prototype.getScaleFromMatrix = function (m) {
+		console.warn('THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale().');
+		return this.setFromMatrixScale(m);
+	};
 
-			array.push( material.onBeforeCompile.toString() );
+	Vector3.prototype.getColumnFromMatrix = function (index, matrix) {
+		console.warn('THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn().');
+		return this.setFromMatrixColumn(matrix, index);
+	};
 
-			array.push( renderer.gammaOutput );
+	Vector3.prototype.applyProjection = function (m) {
+		console.warn('THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead.');
+		return this.applyMatrix4(m);
+	};
 
-			return array.join();
+	Vector3.prototype.fromAttribute = function (attribute, index, offset) {
+		console.warn('THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute().');
+		return this.fromBufferAttribute(attribute, index, offset);
+	};
 
-		};
+	Vector3.prototype.distanceToManhattan = function (v) {
+		console.warn('THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo().');
+		return this.manhattanDistanceTo(v);
+	};
 
-		this.acquireProgram = function ( material, shader, parameters, code ) {
+	Vector3.prototype.lengthManhattan = function () {
+		console.warn('THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength().');
+		return this.manhattanLength();
+	}; //
 
-			var program;
 
-			// Check if code has been already compiled
-			for ( var p = 0, pl = programs.length; p < pl; p ++ ) {
+	Vector4.prototype.fromAttribute = function (attribute, index, offset) {
+		console.warn('THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute().');
+		return this.fromBufferAttribute(attribute, index, offset);
+	};
 
-				var programInfo = programs[ p ];
+	Vector4.prototype.lengthManhattan = function () {
+		console.warn('THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength().');
+		return this.manhattanLength();
+	}; //
 
-				if ( programInfo.code === code ) {
 
-					program = programInfo;
-					++ program.usedTimes;
+	Object3D.prototype.getChildByName = function (name) {
+		console.warn('THREE.Object3D: .getChildByName() has been renamed to .getObjectByName().');
+		return this.getObjectByName(name);
+	};
 
-					break;
+	Object3D.prototype.renderDepth = function () {
+		console.warn('THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.');
+	};
 
-				}
+	Object3D.prototype.translate = function (distance, axis) {
+		console.warn('THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead.');
+		return this.translateOnAxis(axis, distance);
+	};
 
-			}
+	Object3D.prototype.getWorldRotation = function () {
+		console.error('THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.');
+	};
 
-			if ( program === undefined ) {
-
-				program = new WebGLProgram( renderer, extensions, code, material, shader, parameters );
-				programs.push( program );
+	Object3D.prototype.applyMatrix = function (matrix) {
+		console.warn('THREE.Object3D: .applyMatrix() has been renamed to .applyMatrix4().');
+		return this.applyMatrix4(matrix);
+	};
 
+	Object.defineProperties(Object3D.prototype, {
+		eulerOrder: {
+			get: function () {
+				console.warn('THREE.Object3D: .eulerOrder is now .rotation.order.');
+				return this.rotation.order;
+			},
+			set: function (value) {
+				console.warn('THREE.Object3D: .eulerOrder is now .rotation.order.');
+				this.rotation.order = value;
 			}
-
-			return program;
-
-		};
-
-		this.releaseProgram = function ( program ) {
-
-			if ( -- program.usedTimes === 0 ) {
-
-				// Remove from unordered set
-				var i = programs.indexOf( program );
-				programs[ i ] = programs[ programs.length - 1 ];
-				programs.pop();
-
-				// Free WebGL resources
-				program.destroy();
-
+		},
+		useQuaternion: {
+			get: function () {
+				console.warn('THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.');
+			},
+			set: function () {
+				console.warn('THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.');
 			}
+		}
+	});
 
-		};
-
-		// Exposed for resource monitoring & error feedback via renderer.info:
-		this.programs = programs;
-
-	}
-
-	/**
-	 * @author fordacious / fordacious.github.io
-	 */
-
-	function WebGLProperties() {
+	Mesh.prototype.setDrawMode = function () {
+		console.error('THREE.Mesh: .setDrawMode() has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.');
+	};
 
-		var properties = new WeakMap();
+	Object.defineProperties(Mesh.prototype, {
+		drawMode: {
+			get: function () {
+				console.error('THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode.');
+				return TrianglesDrawMode;
+			},
+			set: function () {
+				console.error('THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.');
+			}
+		}
+	});
 
-		function get( object ) {
+	SkinnedMesh.prototype.initBones = function () {
+		console.error('THREE.SkinnedMesh: initBones() has been removed.');
+	}; //
 
-			var map = properties.get( object );
 
-			if ( map === undefined ) {
+	PerspectiveCamera.prototype.setLens = function (focalLength, filmGauge) {
+		console.warn('THREE.PerspectiveCamera.setLens is deprecated. ' + 'Use .setFocalLength and .filmGauge for a photographic setup.');
+		if (filmGauge !== undefined) this.filmGauge = filmGauge;
+		this.setFocalLength(focalLength);
+	}; //
 
-				map = {};
-				properties.set( object, map );
 
+	Object.defineProperties(Light.prototype, {
+		onlyShadow: {
+			set: function () {
+				console.warn('THREE.Light: .onlyShadow has been removed.');
+			}
+		},
+		shadowCameraFov: {
+			set: function (value) {
+				console.warn('THREE.Light: .shadowCameraFov is now .shadow.camera.fov.');
+				this.shadow.camera.fov = value;
+			}
+		},
+		shadowCameraLeft: {
+			set: function (value) {
+				console.warn('THREE.Light: .shadowCameraLeft is now .shadow.camera.left.');
+				this.shadow.camera.left = value;
+			}
+		},
+		shadowCameraRight: {
+			set: function (value) {
+				console.warn('THREE.Light: .shadowCameraRight is now .shadow.camera.right.');
+				this.shadow.camera.right = value;
+			}
+		},
+		shadowCameraTop: {
+			set: function (value) {
+				console.warn('THREE.Light: .shadowCameraTop is now .shadow.camera.top.');
+				this.shadow.camera.top = value;
+			}
+		},
+		shadowCameraBottom: {
+			set: function (value) {
+				console.warn('THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom.');
+				this.shadow.camera.bottom = value;
+			}
+		},
+		shadowCameraNear: {
+			set: function (value) {
+				console.warn('THREE.Light: .shadowCameraNear is now .shadow.camera.near.');
+				this.shadow.camera.near = value;
+			}
+		},
+		shadowCameraFar: {
+			set: function (value) {
+				console.warn('THREE.Light: .shadowCameraFar is now .shadow.camera.far.');
+				this.shadow.camera.far = value;
+			}
+		},
+		shadowCameraVisible: {
+			set: function () {
+				console.warn('THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.');
+			}
+		},
+		shadowBias: {
+			set: function (value) {
+				console.warn('THREE.Light: .shadowBias is now .shadow.bias.');
+				this.shadow.bias = value;
+			}
+		},
+		shadowDarkness: {
+			set: function () {
+				console.warn('THREE.Light: .shadowDarkness has been removed.');
+			}
+		},
+		shadowMapWidth: {
+			set: function (value) {
+				console.warn('THREE.Light: .shadowMapWidth is now .shadow.mapSize.width.');
+				this.shadow.mapSize.width = value;
+			}
+		},
+		shadowMapHeight: {
+			set: function (value) {
+				console.warn('THREE.Light: .shadowMapHeight is now .shadow.mapSize.height.');
+				this.shadow.mapSize.height = value;
 			}
-
-			return map;
-
 		}
+	}); //
 
-		function remove( object ) {
-
-			properties.delete( object );
-
+	Object.defineProperties(BufferAttribute.prototype, {
+		length: {
+			get: function () {
+				console.warn('THREE.BufferAttribute: .length has been deprecated. Use .count instead.');
+				return this.array.length;
+			}
+		},
+		dynamic: {
+			get: function () {
+				console.warn('THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.');
+				return this.usage === DynamicDrawUsage;
+			},
+			set: function ()
+			/* value */
+			{
+				console.warn('THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.');
+				this.setUsage(DynamicDrawUsage);
+			}
 		}
+	});
 
-		function update( object, key, value ) {
-
-			properties.get( object )[ key ] = value;
-
-		}
+	BufferAttribute.prototype.setDynamic = function (value) {
+		console.warn('THREE.BufferAttribute: .setDynamic() has been deprecated. Use .setUsage() instead.');
+		this.setUsage(value === true ? DynamicDrawUsage : StaticDrawUsage);
+		return this;
+	};
 
-		function dispose() {
+	BufferAttribute.prototype.copyIndicesArray = function ()
+	/* indices */
+	{
+		console.error('THREE.BufferAttribute: .copyIndicesArray() has been removed.');
+	}, BufferAttribute.prototype.setArray = function ()
+	/* array */
+	{
+		console.error('THREE.BufferAttribute: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers');
+	}; //
+
+	BufferGeometry.prototype.addIndex = function (index) {
+		console.warn('THREE.BufferGeometry: .addIndex() has been renamed to .setIndex().');
+		this.setIndex(index);
+	};
 
-			properties = new WeakMap();
+	BufferGeometry.prototype.addAttribute = function (name, attribute) {
+		console.warn('THREE.BufferGeometry: .addAttribute() has been renamed to .setAttribute().');
 
+		if (!(attribute && attribute.isBufferAttribute) && !(attribute && attribute.isInterleavedBufferAttribute)) {
+			console.warn('THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).');
+			return this.setAttribute(name, new BufferAttribute(arguments[1], arguments[2]));
 		}
 
-		return {
-			get: get,
-			remove: remove,
-			update: update,
-			dispose: dispose
-		};
-
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function painterSortStable( a, b ) {
+		if (name === 'index') {
+			console.warn('THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.');
+			this.setIndex(attribute);
+			return this;
+		}
 
-		if ( a.renderOrder !== b.renderOrder ) {
+		return this.setAttribute(name, attribute);
+	};
 
-			return a.renderOrder - b.renderOrder;
+	BufferGeometry.prototype.addDrawCall = function (start, count, indexOffset) {
+		if (indexOffset !== undefined) {
+			console.warn('THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset.');
+		}
 
-		} else if ( a.program && b.program && a.program !== b.program ) {
+		console.warn('THREE.BufferGeometry: .addDrawCall() is now .addGroup().');
+		this.addGroup(start, count);
+	};
 
-			return a.program.id - b.program.id;
+	BufferGeometry.prototype.clearDrawCalls = function () {
+		console.warn('THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups().');
+		this.clearGroups();
+	};
 
-		} else if ( a.material.id !== b.material.id ) {
+	BufferGeometry.prototype.computeOffsets = function () {
+		console.warn('THREE.BufferGeometry: .computeOffsets() has been removed.');
+	};
 
-			return a.material.id - b.material.id;
+	BufferGeometry.prototype.removeAttribute = function (name) {
+		console.warn('THREE.BufferGeometry: .removeAttribute() has been renamed to .deleteAttribute().');
+		return this.deleteAttribute(name);
+	};
 
-		} else if ( a.z !== b.z ) {
+	BufferGeometry.prototype.applyMatrix = function (matrix) {
+		console.warn('THREE.BufferGeometry: .applyMatrix() has been renamed to .applyMatrix4().');
+		return this.applyMatrix4(matrix);
+	};
 
-			return a.z - b.z;
+	Object.defineProperties(BufferGeometry.prototype, {
+		drawcalls: {
+			get: function () {
+				console.error('THREE.BufferGeometry: .drawcalls has been renamed to .groups.');
+				return this.groups;
+			}
+		},
+		offsets: {
+			get: function () {
+				console.warn('THREE.BufferGeometry: .offsets has been renamed to .groups.');
+				return this.groups;
+			}
+		}
+	});
 
-		} else {
+	InterleavedBuffer.prototype.setDynamic = function (value) {
+		console.warn('THREE.InterleavedBuffer: .setDynamic() has been deprecated. Use .setUsage() instead.');
+		this.setUsage(value === true ? DynamicDrawUsage : StaticDrawUsage);
+		return this;
+	};
 
-			return a.id - b.id;
+	InterleavedBuffer.prototype.setArray = function ()
+	/* array */
+	{
+		console.error('THREE.InterleavedBuffer: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers');
+	}; //
 
-		}
 
-	}
+	ExtrudeGeometry.prototype.getArrays = function () {
+		console.error('THREE.ExtrudeGeometry: .getArrays() has been removed.');
+	};
 
-	function reversePainterSortStable( a, b ) {
+	ExtrudeGeometry.prototype.addShapeList = function () {
+		console.error('THREE.ExtrudeGeometry: .addShapeList() has been removed.');
+	};
 
-		if ( a.renderOrder !== b.renderOrder ) {
+	ExtrudeGeometry.prototype.addShape = function () {
+		console.error('THREE.ExtrudeGeometry: .addShape() has been removed.');
+	}; //
 
-			return a.renderOrder - b.renderOrder;
 
-		} if ( a.z !== b.z ) {
+	Scene.prototype.dispose = function () {
+		console.error('THREE.Scene: .dispose() has been removed.');
+	}; //
 
-			return b.z - a.z;
 
-		} else {
+	Uniform.prototype.onUpdate = function () {
+		console.warn('THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead.');
+		return this;
+	}; //
 
-			return a.id - b.id;
 
+	Object.defineProperties(Material.prototype, {
+		wrapAround: {
+			get: function () {
+				console.warn('THREE.Material: .wrapAround has been removed.');
+			},
+			set: function () {
+				console.warn('THREE.Material: .wrapAround has been removed.');
+			}
+		},
+		overdraw: {
+			get: function () {
+				console.warn('THREE.Material: .overdraw has been removed.');
+			},
+			set: function () {
+				console.warn('THREE.Material: .overdraw has been removed.');
+			}
+		},
+		wrapRGB: {
+			get: function () {
+				console.warn('THREE.Material: .wrapRGB has been removed.');
+				return new Color();
+			}
+		},
+		shading: {
+			get: function () {
+				console.error('THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.');
+			},
+			set: function (value) {
+				console.warn('THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.');
+				this.flatShading = value === FlatShading;
+			}
+		},
+		stencilMask: {
+			get: function () {
+				console.warn('THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.');
+				return this.stencilFuncMask;
+			},
+			set: function (value) {
+				console.warn('THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.');
+				this.stencilFuncMask = value;
+			}
 		}
+	});
+	Object.defineProperties(ShaderMaterial.prototype, {
+		derivatives: {
+			get: function () {
+				console.warn('THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives.');
+				return this.extensions.derivatives;
+			},
+			set: function (value) {
+				console.warn('THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives.');
+				this.extensions.derivatives = value;
+			}
+		}
+	}); //
 
-	}
-
-	function WebGLRenderList() {
+	WebGLRenderer.prototype.clearTarget = function (renderTarget, color, depth, stencil) {
+		console.warn('THREE.WebGLRenderer: .clearTarget() has been deprecated. Use .setRenderTarget() and .clear() instead.');
+		this.setRenderTarget(renderTarget);
+		this.clear(color, depth, stencil);
+	};
 
-		var renderItems = [];
-		var renderItemsIndex = 0;
+	WebGLRenderer.prototype.animate = function (callback) {
+		console.warn('THREE.WebGLRenderer: .animate() is now .setAnimationLoop().');
+		this.setAnimationLoop(callback);
+	};
 
-		var opaque = [];
-		var transparent = [];
+	WebGLRenderer.prototype.getCurrentRenderTarget = function () {
+		console.warn('THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget().');
+		return this.getRenderTarget();
+	};
 
-		function init() {
+	WebGLRenderer.prototype.getMaxAnisotropy = function () {
+		console.warn('THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy().');
+		return this.capabilities.getMaxAnisotropy();
+	};
 
-			renderItemsIndex = 0;
+	WebGLRenderer.prototype.getPrecision = function () {
+		console.warn('THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision.');
+		return this.capabilities.precision;
+	};
 
-			opaque.length = 0;
-			transparent.length = 0;
+	WebGLRenderer.prototype.resetGLState = function () {
+		console.warn('THREE.WebGLRenderer: .resetGLState() is now .state.reset().');
+		return this.state.reset();
+	};
 
-		}
+	WebGLRenderer.prototype.supportsFloatTextures = function () {
+		console.warn('THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( \'OES_texture_float\' ).');
+		return this.extensions.get('OES_texture_float');
+	};
 
-		function push( object, geometry, material, z, group ) {
+	WebGLRenderer.prototype.supportsHalfFloatTextures = function () {
+		console.warn('THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( \'OES_texture_half_float\' ).');
+		return this.extensions.get('OES_texture_half_float');
+	};
 
-			var renderItem = renderItems[ renderItemsIndex ];
+	WebGLRenderer.prototype.supportsStandardDerivatives = function () {
+		console.warn('THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( \'OES_standard_derivatives\' ).');
+		return this.extensions.get('OES_standard_derivatives');
+	};
 
-			if ( renderItem === undefined ) {
+	WebGLRenderer.prototype.supportsCompressedTextureS3TC = function () {
+		console.warn('THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( \'WEBGL_compressed_texture_s3tc\' ).');
+		return this.extensions.get('WEBGL_compressed_texture_s3tc');
+	};
 
-				renderItem = {
-					id: object.id,
-					object: object,
-					geometry: geometry,
-					material: material,
-					program: material.program,
-					renderOrder: object.renderOrder,
-					z: z,
-					group: group
-				};
+	WebGLRenderer.prototype.supportsCompressedTexturePVRTC = function () {
+		console.warn('THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( \'WEBGL_compressed_texture_pvrtc\' ).');
+		return this.extensions.get('WEBGL_compressed_texture_pvrtc');
+	};
 
-				renderItems[ renderItemsIndex ] = renderItem;
+	WebGLRenderer.prototype.supportsBlendMinMax = function () {
+		console.warn('THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( \'EXT_blend_minmax\' ).');
+		return this.extensions.get('EXT_blend_minmax');
+	};
 
-			} else {
+	WebGLRenderer.prototype.supportsVertexTextures = function () {
+		console.warn('THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures.');
+		return this.capabilities.vertexTextures;
+	};
 
-				renderItem.id = object.id;
-				renderItem.object = object;
-				renderItem.geometry = geometry;
-				renderItem.material = material;
-				renderItem.program = material.program;
-				renderItem.renderOrder = object.renderOrder;
-				renderItem.z = z;
-				renderItem.group = group;
+	WebGLRenderer.prototype.supportsInstancedArrays = function () {
+		console.warn('THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( \'ANGLE_instanced_arrays\' ).');
+		return this.extensions.get('ANGLE_instanced_arrays');
+	};
 
-			}
+	WebGLRenderer.prototype.enableScissorTest = function (boolean) {
+		console.warn('THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest().');
+		this.setScissorTest(boolean);
+	};
 
-			( material.transparent === true ? transparent : opaque ).push( renderItem );
+	WebGLRenderer.prototype.initMaterial = function () {
+		console.warn('THREE.WebGLRenderer: .initMaterial() has been removed.');
+	};
 
-			renderItemsIndex ++;
+	WebGLRenderer.prototype.addPrePlugin = function () {
+		console.warn('THREE.WebGLRenderer: .addPrePlugin() has been removed.');
+	};
 
-		}
+	WebGLRenderer.prototype.addPostPlugin = function () {
+		console.warn('THREE.WebGLRenderer: .addPostPlugin() has been removed.');
+	};
 
-		function sort() {
+	WebGLRenderer.prototype.updateShadowMap = function () {
+		console.warn('THREE.WebGLRenderer: .updateShadowMap() has been removed.');
+	};
 
-			if ( opaque.length > 1 ) opaque.sort( painterSortStable );
-			if ( transparent.length > 1 ) transparent.sort( reversePainterSortStable );
+	WebGLRenderer.prototype.setFaceCulling = function () {
+		console.warn('THREE.WebGLRenderer: .setFaceCulling() has been removed.');
+	};
 
-		}
+	WebGLRenderer.prototype.allocTextureUnit = function () {
+		console.warn('THREE.WebGLRenderer: .allocTextureUnit() has been removed.');
+	};
 
-		return {
-			opaque: opaque,
-			transparent: transparent,
+	WebGLRenderer.prototype.setTexture = function () {
+		console.warn('THREE.WebGLRenderer: .setTexture() has been removed.');
+	};
 
-			init: init,
-			push: push,
+	WebGLRenderer.prototype.setTexture2D = function () {
+		console.warn('THREE.WebGLRenderer: .setTexture2D() has been removed.');
+	};
 
-			sort: sort
-		};
+	WebGLRenderer.prototype.setTextureCube = function () {
+		console.warn('THREE.WebGLRenderer: .setTextureCube() has been removed.');
+	};
 
-	}
-
-	function WebGLRenderLists() {
-
-		var lists = {};
-
-		function get( scene, camera ) {
-
-			var hash = scene.id + ',' + camera.id;
-			var list = lists[ hash ];
-
-			if ( list === undefined ) {
-
-				// console.log( 'THREE.WebGLRenderLists:', hash );
-
-				list = new WebGLRenderList();
-				lists[ hash ] = list;
+	WebGLRenderer.prototype.getActiveMipMapLevel = function () {
+		console.warn('THREE.WebGLRenderer: .getActiveMipMapLevel() is now .getActiveMipmapLevel().');
+		return this.getActiveMipmapLevel();
+	};
 
+	Object.defineProperties(WebGLRenderer.prototype, {
+		shadowMapEnabled: {
+			get: function () {
+				return this.shadowMap.enabled;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled.');
+				this.shadowMap.enabled = value;
+			}
+		},
+		shadowMapType: {
+			get: function () {
+				return this.shadowMap.type;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type.');
+				this.shadowMap.type = value;
+			}
+		},
+		shadowMapCullFace: {
+			get: function () {
+				console.warn('THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.');
+				return undefined;
+			},
+			set: function ()
+			/* value */
+			{
+				console.warn('THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.');
+			}
+		},
+		context: {
+			get: function () {
+				console.warn('THREE.WebGLRenderer: .context has been removed. Use .getContext() instead.');
+				return this.getContext();
+			}
+		},
+		vr: {
+			get: function () {
+				console.warn('THREE.WebGLRenderer: .vr has been renamed to .xr');
+				return this.xr;
+			}
+		},
+		gammaInput: {
+			get: function () {
+				console.warn('THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.');
+				return false;
+			},
+			set: function () {
+				console.warn('THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.');
+			}
+		},
+		gammaOutput: {
+			get: function () {
+				console.warn('THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.');
+				return false;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.');
+				this.outputEncoding = value === true ? sRGBEncoding : LinearEncoding;
+			}
+		},
+		toneMappingWhitePoint: {
+			get: function () {
+				console.warn('THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.');
+				return 1.0;
+			},
+			set: function () {
+				console.warn('THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.');
 			}
-
-			return list;
-
 		}
-
-		function dispose() {
-
-			lists = {};
-
+	});
+	Object.defineProperties(WebGLShadowMap.prototype, {
+		cullFace: {
+			get: function () {
+				console.warn('THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.');
+				return undefined;
+			},
+			set: function ()
+			/* cullFace */
+			{
+				console.warn('THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.');
+			}
+		},
+		renderReverseSided: {
+			get: function () {
+				console.warn('THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.');
+				return undefined;
+			},
+			set: function () {
+				console.warn('THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.');
+			}
+		},
+		renderSingleSided: {
+			get: function () {
+				console.warn('THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.');
+				return undefined;
+			},
+			set: function () {
+				console.warn('THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.');
+			}
 		}
+	});
+	function WebGLRenderTargetCube(width, height, options) {
+		console.warn('THREE.WebGLRenderTargetCube( width, height, options ) is now WebGLCubeRenderTarget( size, options ).');
+		return new WebGLCubeRenderTarget(width, options);
+	} //
 
-		return {
-			get: get,
-			dispose: dispose
-		};
-
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function UniformsCache() {
-
-		var lights = {};
-
-		return {
-
-			get: function ( light ) {
-
-				if ( lights[ light.id ] !== undefined ) {
+	Object.defineProperties(WebGLRenderTarget.prototype, {
+		wrapS: {
+			get: function () {
+				console.warn('THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.');
+				return this.texture.wrapS;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.');
+				this.texture.wrapS = value;
+			}
+		},
+		wrapT: {
+			get: function () {
+				console.warn('THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.');
+				return this.texture.wrapT;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.');
+				this.texture.wrapT = value;
+			}
+		},
+		magFilter: {
+			get: function () {
+				console.warn('THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.');
+				return this.texture.magFilter;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.');
+				this.texture.magFilter = value;
+			}
+		},
+		minFilter: {
+			get: function () {
+				console.warn('THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.');
+				return this.texture.minFilter;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.');
+				this.texture.minFilter = value;
+			}
+		},
+		anisotropy: {
+			get: function () {
+				console.warn('THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.');
+				return this.texture.anisotropy;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.');
+				this.texture.anisotropy = value;
+			}
+		},
+		offset: {
+			get: function () {
+				console.warn('THREE.WebGLRenderTarget: .offset is now .texture.offset.');
+				return this.texture.offset;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderTarget: .offset is now .texture.offset.');
+				this.texture.offset = value;
+			}
+		},
+		repeat: {
+			get: function () {
+				console.warn('THREE.WebGLRenderTarget: .repeat is now .texture.repeat.');
+				return this.texture.repeat;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderTarget: .repeat is now .texture.repeat.');
+				this.texture.repeat = value;
+			}
+		},
+		format: {
+			get: function () {
+				console.warn('THREE.WebGLRenderTarget: .format is now .texture.format.');
+				return this.texture.format;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderTarget: .format is now .texture.format.');
+				this.texture.format = value;
+			}
+		},
+		type: {
+			get: function () {
+				console.warn('THREE.WebGLRenderTarget: .type is now .texture.type.');
+				return this.texture.type;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderTarget: .type is now .texture.type.');
+				this.texture.type = value;
+			}
+		},
+		generateMipmaps: {
+			get: function () {
+				console.warn('THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.');
+				return this.texture.generateMipmaps;
+			},
+			set: function (value) {
+				console.warn('THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.');
+				this.texture.generateMipmaps = value;
+			}
+		}
+	}); //
 
-					return lights[ light.id ];
+	Audio.prototype.load = function (file) {
+		console.warn('THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.');
+		const scope = this;
+		const audioLoader = new AudioLoader();
+		audioLoader.load(file, function (buffer) {
+			scope.setBuffer(buffer);
+		});
+		return this;
+	};
 
-				}
+	AudioAnalyser.prototype.getData = function () {
+		console.warn('THREE.AudioAnalyser: .getData() is now .getFrequencyData().');
+		return this.getFrequencyData();
+	}; //
 
-				var uniforms;
 
-				switch ( light.type ) {
+	CubeCamera.prototype.updateCubeMap = function (renderer, scene) {
+		console.warn('THREE.CubeCamera: .updateCubeMap() is now .update().');
+		return this.update(renderer, scene);
+	};
 
-					case 'DirectionalLight':
-						uniforms = {
-							direction: new Vector3(),
-							color: new Color(),
+	CubeCamera.prototype.clear = function (renderer, color, depth, stencil) {
+		console.warn('THREE.CubeCamera: .clear() is now .renderTarget.clear().');
+		return this.renderTarget.clear(renderer, color, depth, stencil);
+	};
 
-							shadow: false,
-							shadowBias: 0,
-							shadowRadius: 1,
-							shadowMapSize: new Vector2()
-						};
-						break;
+	ImageUtils.crossOrigin = undefined;
 
-					case 'SpotLight':
-						uniforms = {
-							position: new Vector3(),
-							direction: new Vector3(),
-							color: new Color(),
-							distance: 0,
-							coneCos: 0,
-							penumbraCos: 0,
-							decay: 0,
+	ImageUtils.loadTexture = function (url, mapping, onLoad, onError) {
+		console.warn('THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.');
+		const loader = new TextureLoader();
+		loader.setCrossOrigin(this.crossOrigin);
+		const texture = loader.load(url, onLoad, undefined, onError);
+		if (mapping) texture.mapping = mapping;
+		return texture;
+	};
 
-							shadow: false,
-							shadowBias: 0,
-							shadowRadius: 1,
-							shadowMapSize: new Vector2()
-						};
-						break;
+	ImageUtils.loadTextureCube = function (urls, mapping, onLoad, onError) {
+		console.warn('THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.');
+		const loader = new CubeTextureLoader();
+		loader.setCrossOrigin(this.crossOrigin);
+		const texture = loader.load(urls, onLoad, undefined, onError);
+		if (mapping) texture.mapping = mapping;
+		return texture;
+	};
 
-					case 'PointLight':
-						uniforms = {
-							position: new Vector3(),
-							color: new Color(),
-							distance: 0,
-							decay: 0,
+	ImageUtils.loadCompressedTexture = function () {
+		console.error('THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.');
+	};
 
-							shadow: false,
-							shadowBias: 0,
-							shadowRadius: 1,
-							shadowMapSize: new Vector2(),
-							shadowCameraNear: 1,
-							shadowCameraFar: 1000
-						};
-						break;
+	ImageUtils.loadCompressedTextureCube = function () {
+		console.error('THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.');
+	}; //
 
-					case 'HemisphereLight':
-						uniforms = {
-							direction: new Vector3(),
-							skyColor: new Color(),
-							groundColor: new Color()
-						};
-						break;
 
-					case 'RectAreaLight':
-						uniforms = {
-							color: new Color(),
-							position: new Vector3(),
-							halfWidth: new Vector3(),
-							halfHeight: new Vector3()
-							// TODO (abelnation): set RectAreaLight shadow uniforms
-						};
-						break;
+	function CanvasRenderer() {
+		console.error('THREE.CanvasRenderer has been removed');
+	} //
 
-				}
+	function JSONLoader() {
+		console.error('THREE.JSONLoader has been removed.');
+	} //
 
-				lights[ light.id ] = uniforms;
+	const SceneUtils = {
+		createMultiMaterialObject: function ()
+		/* geometry, materials */
+		{
+			console.error('THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js');
+		},
+		detach: function ()
+		/* child, parent, scene */
+		{
+			console.error('THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js');
+		},
+		attach: function ()
+		/* child, scene, parent */
+		{
+			console.error('THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js');
+		}
+	}; //
 
-				return uniforms;
+	function LensFlare() {
+		console.error('THREE.LensFlare has been moved to /examples/jsm/objects/Lensflare.js');
+	}
 
+	if (typeof __THREE_DEVTOOLS__ !== 'undefined') {
+		/* eslint-disable no-undef */
+		__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent('register', {
+			detail: {
+				revision: REVISION
 			}
-
-		};
+		}));
+		/* eslint-enable no-undef */
 
 	}
 
-	var count = 0;
-
-	function WebGLLights() {
-
-		var cache = new UniformsCache();
-
-		var state = {
-
-			id: count ++,
-
-			hash: '',
-
-			ambient: [ 0, 0, 0 ],
-			directional: [],
-			directionalShadowMap: [],
-			directionalShadowMatrix: [],
-			spot: [],
-			spotShadowMap: [],
-			spotShadowMatrix: [],
-			rectArea: [],
-			point: [],
-			pointShadowMap: [],
-			pointShadowMatrix: [],
-			hemi: []
-
-		};
-
-		var vector3 = new Vector3();
-		var matrix4 = new Matrix4();
-		var matrix42 = new Matrix4();
-
-		function setup( lights, shadows, camera ) {
+	if (typeof window !== 'undefined') {
+		if (window.__THREE__) {
+			console.warn('WARNING: Multiple instances of Three.js being imported.');
+		} else {
+			window.__THREE__ = REVISION;
+		}
+	}
 
-			var r = 0, g = 0, b = 0;
-
-			var directionalLength = 0;
-			var pointLength = 0;
-			var spotLength = 0;
-			var rectAreaLength = 0;
-			var hemiLength = 0;
-
-			var viewMatrix = camera.matrixWorldInverse;
-
-			for ( var i = 0, l = lights.length; i < l; i ++ ) {
-
-				var light = lights[ i ];
-
-				var color = light.color;
-				var intensity = light.intensity;
-				var distance = light.distance;
-
-				var shadowMap = ( light.shadow && light.shadow.map ) ? light.shadow.map.texture : null;
-
-				if ( light.isAmbientLight ) {
-
-					r += color.r * intensity;
-					g += color.g * intensity;
-					b += color.b * intensity;
-
-				} else if ( light.isDirectionalLight ) {
-
-					var uniforms = cache.get( light );
-
-					uniforms.color.copy( light.color ).multiplyScalar( light.intensity );
-					uniforms.direction.setFromMatrixPosition( light.matrixWorld );
-					vector3.setFromMatrixPosition( light.target.matrixWorld );
-					uniforms.direction.sub( vector3 );
-					uniforms.direction.transformDirection( viewMatrix );
-
-					uniforms.shadow = light.castShadow;
-
-					if ( light.castShadow ) {
-
-						var shadow = light.shadow;
-
-						uniforms.shadowBias = shadow.bias;
-						uniforms.shadowRadius = shadow.radius;
-						uniforms.shadowMapSize = shadow.mapSize;
-
-					}
-
-					state.directionalShadowMap[ directionalLength ] = shadowMap;
-					state.directionalShadowMatrix[ directionalLength ] = light.shadow.matrix;
-					state.directional[ directionalLength ] = uniforms;
-
-					directionalLength ++;
-
-				} else if ( light.isSpotLight ) {
-
-					var uniforms = cache.get( light );
-
-					uniforms.position.setFromMatrixPosition( light.matrixWorld );
-					uniforms.position.applyMatrix4( viewMatrix );
-
-					uniforms.color.copy( color ).multiplyScalar( intensity );
-					uniforms.distance = distance;
-
-					uniforms.direction.setFromMatrixPosition( light.matrixWorld );
-					vector3.setFromMatrixPosition( light.target.matrixWorld );
-					uniforms.direction.sub( vector3 );
-					uniforms.direction.transformDirection( viewMatrix );
-
-					uniforms.coneCos = Math.cos( light.angle );
-					uniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );
-					uniforms.decay = ( light.distance === 0 ) ? 0.0 : light.decay;
-
-					uniforms.shadow = light.castShadow;
-
-					if ( light.castShadow ) {
-
-						var shadow = light.shadow;
-
-						uniforms.shadowBias = shadow.bias;
-						uniforms.shadowRadius = shadow.radius;
-						uniforms.shadowMapSize = shadow.mapSize;
-
-					}
-
-					state.spotShadowMap[ spotLength ] = shadowMap;
-					state.spotShadowMatrix[ spotLength ] = light.shadow.matrix;
-					state.spot[ spotLength ] = uniforms;
-
-					spotLength ++;
-
-				} else if ( light.isRectAreaLight ) {
-
-					var uniforms = cache.get( light );
-
-					// (a) intensity is the total visible light emitted
-					//uniforms.color.copy( color ).multiplyScalar( intensity / ( light.width * light.height * Math.PI ) );
-
-					// (b) intensity is the brightness of the light
-					uniforms.color.copy( color ).multiplyScalar( intensity );
-
-					uniforms.position.setFromMatrixPosition( light.matrixWorld );
-					uniforms.position.applyMatrix4( viewMatrix );
-
-					// extract local rotation of light to derive width/height half vectors
-					matrix42.identity();
-					matrix4.copy( light.matrixWorld );
-					matrix4.premultiply( viewMatrix );
-					matrix42.extractRotation( matrix4 );
-
-					uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
-					uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );
-
-					uniforms.halfWidth.applyMatrix4( matrix42 );
-					uniforms.halfHeight.applyMatrix4( matrix42 );
-
-					// TODO (abelnation): RectAreaLight distance?
-					// uniforms.distance = distance;
-
-					state.rectArea[ rectAreaLength ] = uniforms;
-
-					rectAreaLength ++;
-
-				} else if ( light.isPointLight ) {
-
-					var uniforms = cache.get( light );
-
-					uniforms.position.setFromMatrixPosition( light.matrixWorld );
-					uniforms.position.applyMatrix4( viewMatrix );
-
-					uniforms.color.copy( light.color ).multiplyScalar( light.intensity );
-					uniforms.distance = light.distance;
-					uniforms.decay = ( light.distance === 0 ) ? 0.0 : light.decay;
-
-					uniforms.shadow = light.castShadow;
-
-					if ( light.castShadow ) {
-
-						var shadow = light.shadow;
-
-						uniforms.shadowBias = shadow.bias;
-						uniforms.shadowRadius = shadow.radius;
-						uniforms.shadowMapSize = shadow.mapSize;
-						uniforms.shadowCameraNear = shadow.camera.near;
-						uniforms.shadowCameraFar = shadow.camera.far;
-
-					}
-
-					state.pointShadowMap[ pointLength ] = shadowMap;
-					state.pointShadowMatrix[ pointLength ] = light.shadow.matrix;
-					state.point[ pointLength ] = uniforms;
-
-					pointLength ++;
-
-				} else if ( light.isHemisphereLight ) {
-
-					var uniforms = cache.get( light );
-
-					uniforms.direction.setFromMatrixPosition( light.matrixWorld );
-					uniforms.direction.transformDirection( viewMatrix );
-					uniforms.direction.normalize();
-
-					uniforms.skyColor.copy( light.color ).multiplyScalar( intensity );
-					uniforms.groundColor.copy( light.groundColor ).multiplyScalar( intensity );
-
-					state.hemi[ hemiLength ] = uniforms;
-
-					hemiLength ++;
-
-				}
-
-			}
-
-			state.ambient[ 0 ] = r;
-			state.ambient[ 1 ] = g;
-			state.ambient[ 2 ] = b;
-
-			state.directional.length = directionalLength;
-			state.spot.length = spotLength;
-			state.rectArea.length = rectAreaLength;
-			state.point.length = pointLength;
-			state.hemi.length = hemiLength;
-
-			state.hash = state.id + ',' + directionalLength + ',' + pointLength + ',' + spotLength + ',' + rectAreaLength + ',' + hemiLength + ',' + shadows.length;
-
-		}
-
-		return {
-			setup: setup,
-			state: state
-		};
-
-	}
-
-	/**
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	function WebGLRenderState() {
-
-		var lights = new WebGLLights();
-
-		var lightsArray = [];
-		var shadowsArray = [];
-		var spritesArray = [];
-
-		function init() {
-
-			lightsArray.length = 0;
-			shadowsArray.length = 0;
-			spritesArray.length = 0;
-
-		}
-
-		function pushLight( light ) {
-
-			lightsArray.push( light );
-
-		}
-
-		function pushShadow( shadowLight ) {
-
-			shadowsArray.push( shadowLight );
-
-		}
-
-		function pushSprite( shadowLight ) {
-
-			spritesArray.push( shadowLight );
-
-		}
-
-		function setupLights( camera ) {
-
-			lights.setup( lightsArray, shadowsArray, camera );
-
-		}
-
-		var state = {
-			lightsArray: lightsArray,
-			shadowsArray: shadowsArray,
-			spritesArray: spritesArray,
-
-			lights: lights
-		};
-
-		return {
-			init: init,
-			state: state,
-			setupLights: setupLights,
-
-			pushLight: pushLight,
-			pushShadow: pushShadow,
-			pushSprite: pushSprite
-		};
-
-	}
-
-	function WebGLRenderStates() {
-
-		var renderStates = {};
-
-		function get( scene, camera ) {
-
-			var hash = scene.id + ',' + camera.id;
-
-			var renderState = renderStates[ hash ];
-
-			if ( renderState === undefined ) {
-
-				renderState = new WebGLRenderState();
-				renderStates[ hash ] = renderState;
-
-			}
-
-			return renderState;
-
-		}
-
-		function dispose() {
-
-			renderStates = {};
-
-		}
-
-		return {
-			get: get,
-			dispose: dispose
-		};
-
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author bhouston / https://clara.io
-	 * @author WestLangley / http://github.com/WestLangley
-	 *
-	 * parameters = {
-	 *
-	 *  opacity: <float>,
-	 *
-	 *  map: new THREE.Texture( <Image> ),
-	 *
-	 *  alphaMap: new THREE.Texture( <Image> ),
-	 *
-	 *  displacementMap: new THREE.Texture( <Image> ),
-	 *  displacementScale: <float>,
-	 *  displacementBias: <float>,
-	 *
-	 *  wireframe: <boolean>,
-	 *  wireframeLinewidth: <float>
-	 * }
-	 */
-
-	function MeshDepthMaterial( parameters ) {
-
-		Material.call( this );
-
-		this.type = 'MeshDepthMaterial';
-
-		this.depthPacking = BasicDepthPacking;
-
-		this.skinning = false;
-		this.morphTargets = false;
-
-		this.map = null;
-
-		this.alphaMap = null;
-
-		this.displacementMap = null;
-		this.displacementScale = 1;
-		this.displacementBias = 0;
-
-		this.wireframe = false;
-		this.wireframeLinewidth = 1;
-
-		this.fog = false;
-		this.lights = false;
-
-		this.setValues( parameters );
-
-	}
-
-	MeshDepthMaterial.prototype = Object.create( Material.prototype );
-	MeshDepthMaterial.prototype.constructor = MeshDepthMaterial;
-
-	MeshDepthMaterial.prototype.isMeshDepthMaterial = true;
-
-	MeshDepthMaterial.prototype.copy = function ( source ) {
-
-		Material.prototype.copy.call( this, source );
-
-		this.depthPacking = source.depthPacking;
-
-		this.skinning = source.skinning;
-		this.morphTargets = source.morphTargets;
-
-		this.map = source.map;
-
-		this.alphaMap = source.alphaMap;
-
-		this.displacementMap = source.displacementMap;
-		this.displacementScale = source.displacementScale;
-		this.displacementBias = source.displacementBias;
-
-		this.wireframe = source.wireframe;
-		this.wireframeLinewidth = source.wireframeLinewidth;
-
-		return this;
-
-	};
-
-	/**
-	 * @author WestLangley / http://github.com/WestLangley
-	 *
-	 * parameters = {
-	 *
-	 *  referencePosition: <float>,
-	 *  nearDistance: <float>,
-	 *  farDistance: <float>,
-	 *
-	 *  skinning: <bool>,
-	 *  morphTargets: <bool>,
-	 *
-	 *  map: new THREE.Texture( <Image> ),
-	 *
-	 *  alphaMap: new THREE.Texture( <Image> ),
-	 *
-	 *  displacementMap: new THREE.Texture( <Image> ),
-	 *  displacementScale: <float>,
-	 *  displacementBias: <float>
-	 *
-	 * }
-	 */
-
-	function MeshDistanceMaterial( parameters ) {
-
-		Material.call( this );
-
-		this.type = 'MeshDistanceMaterial';
-
-		this.referencePosition = new Vector3();
-		this.nearDistance = 1;
-		this.farDistance = 1000;
-
-		this.skinning = false;
-		this.morphTargets = false;
-
-		this.map = null;
-
-		this.alphaMap = null;
-
-		this.displacementMap = null;
-		this.displacementScale = 1;
-		this.displacementBias = 0;
-
-		this.fog = false;
-		this.lights = false;
-
-		this.setValues( parameters );
-
-	}
-
-	MeshDistanceMaterial.prototype = Object.create( Material.prototype );
-	MeshDistanceMaterial.prototype.constructor = MeshDistanceMaterial;
-
-	MeshDistanceMaterial.prototype.isMeshDistanceMaterial = true;
-
-	MeshDistanceMaterial.prototype.copy = function ( source ) {
-
-		Material.prototype.copy.call( this, source );
-
-		this.referencePosition.copy( source.referencePosition );
-		this.nearDistance = source.nearDistance;
-		this.farDistance = source.farDistance;
-
-		this.skinning = source.skinning;
-		this.morphTargets = source.morphTargets;
-
-		this.map = source.map;
-
-		this.alphaMap = source.alphaMap;
-
-		this.displacementMap = source.displacementMap;
-		this.displacementScale = source.displacementScale;
-		this.displacementBias = source.displacementBias;
-
-		return this;
-
-	};
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function WebGLShadowMap( _renderer, _objects, maxTextureSize ) {
-
-		var _frustum = new Frustum(),
-			_projScreenMatrix = new Matrix4(),
-
-			_shadowMapSize = new Vector2(),
-			_maxShadowMapSize = new Vector2( maxTextureSize, maxTextureSize ),
-
-			_lookTarget = new Vector3(),
-			_lightPositionWorld = new Vector3(),
-
-			_MorphingFlag = 1,
-			_SkinningFlag = 2,
-
-			_NumberOfMaterialVariants = ( _MorphingFlag | _SkinningFlag ) + 1,
-
-			_depthMaterials = new Array( _NumberOfMaterialVariants ),
-			_distanceMaterials = new Array( _NumberOfMaterialVariants ),
-
-			_materialCache = {};
-
-		var shadowSide = { 0: BackSide, 1: FrontSide, 2: DoubleSide };
-
-		var cubeDirections = [
-			new Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),
-			new Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )
-		];
-
-		var cubeUps = [
-			new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ),
-			new Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),	new Vector3( 0, 0, - 1 )
-		];
-
-		var cube2DViewPorts = [
-			new Vector4(), new Vector4(), new Vector4(),
-			new Vector4(), new Vector4(), new Vector4()
-		];
-
-		// init
-
-		for ( var i = 0; i !== _NumberOfMaterialVariants; ++ i ) {
-
-			var useMorphing = ( i & _MorphingFlag ) !== 0;
-			var useSkinning = ( i & _SkinningFlag ) !== 0;
-
-			var depthMaterial = new MeshDepthMaterial( {
-
-				depthPacking: RGBADepthPacking,
-
-				morphTargets: useMorphing,
-				skinning: useSkinning
-
-			} );
-
-			_depthMaterials[ i ] = depthMaterial;
-
-			//
-
-			var distanceMaterial = new MeshDistanceMaterial( {
-
-				morphTargets: useMorphing,
-				skinning: useSkinning
-
-			} );
-
-			_distanceMaterials[ i ] = distanceMaterial;
-
-		}
-
-		//
-
-		var scope = this;
-
-		this.enabled = false;
-
-		this.autoUpdate = true;
-		this.needsUpdate = false;
-
-		this.type = PCFShadowMap;
-
-		this.render = function ( lights, scene, camera ) {
-
-			if ( scope.enabled === false ) return;
-			if ( scope.autoUpdate === false && scope.needsUpdate === false ) return;
-
-			if ( lights.length === 0 ) return;
-
-			// TODO Clean up (needed in case of contextlost)
-			var _gl = _renderer.context;
-			var _state = _renderer.state;
-
-			// Set GL state for depth map.
-			_state.disable( _gl.BLEND );
-			_state.buffers.color.setClear( 1, 1, 1, 1 );
-			_state.buffers.depth.setTest( true );
-			_state.setScissorTest( false );
-
-			// render depth map
-
-			var faceCount;
-
-			for ( var i = 0, il = lights.length; i < il; i ++ ) {
-
-				var light = lights[ i ];
-				var shadow = light.shadow;
-				var isPointLight = light && light.isPointLight;
-
-				if ( shadow === undefined ) {
-
-					console.warn( 'THREE.WebGLShadowMap:', light, 'has no shadow.' );
-					continue;
-
-				}
-
-				var shadowCamera = shadow.camera;
-
-				_shadowMapSize.copy( shadow.mapSize );
-				_shadowMapSize.min( _maxShadowMapSize );
-
-				if ( isPointLight ) {
-
-					var vpWidth = _shadowMapSize.x;
-					var vpHeight = _shadowMapSize.y;
-
-					// These viewports map a cube-map onto a 2D texture with the
-					// following orientation:
-					//
-					//  xzXZ
-					//   y Y
-					//
-					// X - Positive x direction
-					// x - Negative x direction
-					// Y - Positive y direction
-					// y - Negative y direction
-					// Z - Positive z direction
-					// z - Negative z direction
-
-					// positive X
-					cube2DViewPorts[ 0 ].set( vpWidth * 2, vpHeight, vpWidth, vpHeight );
-					// negative X
-					cube2DViewPorts[ 1 ].set( 0, vpHeight, vpWidth, vpHeight );
-					// positive Z
-					cube2DViewPorts[ 2 ].set( vpWidth * 3, vpHeight, vpWidth, vpHeight );
-					// negative Z
-					cube2DViewPorts[ 3 ].set( vpWidth, vpHeight, vpWidth, vpHeight );
-					// positive Y
-					cube2DViewPorts[ 4 ].set( vpWidth * 3, 0, vpWidth, vpHeight );
-					// negative Y
-					cube2DViewPorts[ 5 ].set( vpWidth, 0, vpWidth, vpHeight );
-
-					_shadowMapSize.x *= 4.0;
-					_shadowMapSize.y *= 2.0;
-
-				}
-
-				if ( shadow.map === null ) {
-
-					var pars = { minFilter: NearestFilter, magFilter: NearestFilter, format: RGBAFormat };
-
-					shadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
-					shadow.map.texture.name = light.name + ".shadowMap";
-
-					shadowCamera.updateProjectionMatrix();
-
-				}
-
-				if ( shadow.isSpotLightShadow ) {
-
-					shadow.update( light );
-
-				}
-
-				var shadowMap = shadow.map;
-				var shadowMatrix = shadow.matrix;
-
-				_lightPositionWorld.setFromMatrixPosition( light.matrixWorld );
-				shadowCamera.position.copy( _lightPositionWorld );
-
-				if ( isPointLight ) {
-
-					faceCount = 6;
-
-					// for point lights we set the shadow matrix to be a translation-only matrix
-					// equal to inverse of the light's position
-
-					shadowMatrix.makeTranslation( - _lightPositionWorld.x, - _lightPositionWorld.y, - _lightPositionWorld.z );
-
-				} else {
-
-					faceCount = 1;
-
-					_lookTarget.setFromMatrixPosition( light.target.matrixWorld );
-					shadowCamera.lookAt( _lookTarget );
-					shadowCamera.updateMatrixWorld();
-
-					// compute shadow matrix
-
-					shadowMatrix.set(
-						0.5, 0.0, 0.0, 0.5,
-						0.0, 0.5, 0.0, 0.5,
-						0.0, 0.0, 0.5, 0.5,
-						0.0, 0.0, 0.0, 1.0
-					);
-
-					shadowMatrix.multiply( shadowCamera.projectionMatrix );
-					shadowMatrix.multiply( shadowCamera.matrixWorldInverse );
-
-				}
-
-				_renderer.setRenderTarget( shadowMap );
-				_renderer.clear();
-
-				// render shadow map for each cube face (if omni-directional) or
-				// run a single pass if not
-
-				for ( var face = 0; face < faceCount; face ++ ) {
-
-					if ( isPointLight ) {
-
-						_lookTarget.copy( shadowCamera.position );
-						_lookTarget.add( cubeDirections[ face ] );
-						shadowCamera.up.copy( cubeUps[ face ] );
-						shadowCamera.lookAt( _lookTarget );
-						shadowCamera.updateMatrixWorld();
-
-						var vpDimensions = cube2DViewPorts[ face ];
-						_state.viewport( vpDimensions );
-
-					}
-
-					// update camera matrices and frustum
-
-					_projScreenMatrix.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );
-					_frustum.setFromMatrix( _projScreenMatrix );
-
-					// set object matrices & frustum culling
-
-					renderObject( scene, camera, shadowCamera, isPointLight );
-
-				}
-
-			}
-
-			scope.needsUpdate = false;
-
-		};
-
-		function getDepthMaterial( object, material, isPointLight, lightPositionWorld, shadowCameraNear, shadowCameraFar ) {
-
-			var geometry = object.geometry;
-
-			var result = null;
-
-			var materialVariants = _depthMaterials;
-			var customMaterial = object.customDepthMaterial;
-
-			if ( isPointLight ) {
-
-				materialVariants = _distanceMaterials;
-				customMaterial = object.customDistanceMaterial;
-
-			}
-
-			if ( ! customMaterial ) {
-
-				var useMorphing = false;
-
-				if ( material.morphTargets ) {
-
-					if ( geometry && geometry.isBufferGeometry ) {
-
-						useMorphing = geometry.morphAttributes && geometry.morphAttributes.position && geometry.morphAttributes.position.length > 0;
-
-					} else if ( geometry && geometry.isGeometry ) {
-
-						useMorphing = geometry.morphTargets && geometry.morphTargets.length > 0;
-
-					}
-
-				}
-
-				if ( object.isSkinnedMesh && material.skinning === false ) {
-
-					console.warn( 'THREE.WebGLShadowMap: THREE.SkinnedMesh with material.skinning set to false:', object );
-
-				}
-
-				var useSkinning = object.isSkinnedMesh && material.skinning;
-
-				var variantIndex = 0;
-
-				if ( useMorphing ) variantIndex |= _MorphingFlag;
-				if ( useSkinning ) variantIndex |= _SkinningFlag;
-
-				result = materialVariants[ variantIndex ];
-
-			} else {
-
-				result = customMaterial;
-
-			}
-
-			if ( _renderer.localClippingEnabled &&
-					material.clipShadows === true &&
-					material.clippingPlanes.length !== 0 ) {
-
-				// in this case we need a unique material instance reflecting the
-				// appropriate state
-
-				var keyA = result.uuid, keyB = material.uuid;
-
-				var materialsForVariant = _materialCache[ keyA ];
-
-				if ( materialsForVariant === undefined ) {
-
-					materialsForVariant = {};
-					_materialCache[ keyA ] = materialsForVariant;
-
-				}
-
-				var cachedMaterial = materialsForVariant[ keyB ];
-
-				if ( cachedMaterial === undefined ) {
-
-					cachedMaterial = result.clone();
-					materialsForVariant[ keyB ] = cachedMaterial;
-
-				}
-
-				result = cachedMaterial;
-
-			}
-
-			result.visible = material.visible;
-			result.wireframe = material.wireframe;
-
-			result.side = ( material.shadowSide != null ) ? material.shadowSide : shadowSide[ material.side ];
-
-			result.clipShadows = material.clipShadows;
-			result.clippingPlanes = material.clippingPlanes;
-			result.clipIntersection = material.clipIntersection;
-
-			result.wireframeLinewidth = material.wireframeLinewidth;
-			result.linewidth = material.linewidth;
-
-			if ( isPointLight && result.isMeshDistanceMaterial ) {
-
-				result.referencePosition.copy( lightPositionWorld );
-				result.nearDistance = shadowCameraNear;
-				result.farDistance = shadowCameraFar;
-
-			}
-
-			return result;
-
-		}
-
-		function renderObject( object, camera, shadowCamera, isPointLight ) {
-
-			if ( object.visible === false ) return;
-
-			var visible = object.layers.test( camera.layers );
-
-			if ( visible && ( object.isMesh || object.isLine || object.isPoints ) ) {
-
-				if ( object.castShadow && ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) ) {
-
-					object.modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );
-
-					var geometry = _objects.update( object );
-					var material = object.material;
-
-					if ( Array.isArray( material ) ) {
-
-						var groups = geometry.groups;
-
-						for ( var k = 0, kl = groups.length; k < kl; k ++ ) {
-
-							var group = groups[ k ];
-							var groupMaterial = material[ group.materialIndex ];
-
-							if ( groupMaterial && groupMaterial.visible ) {
-
-								var depthMaterial = getDepthMaterial( object, groupMaterial, isPointLight, _lightPositionWorld, shadowCamera.near, shadowCamera.far );
-								_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, group );
-
-							}
-
-						}
-
-					} else if ( material.visible ) {
-
-						var depthMaterial = getDepthMaterial( object, material, isPointLight, _lightPositionWorld, shadowCamera.near, shadowCamera.far );
-						_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, null );
-
-					}
-
-				}
-
-			}
-
-			var children = object.children;
-
-			for ( var i = 0, l = children.length; i < l; i ++ ) {
-
-				renderObject( children[ i ], camera, shadowCamera, isPointLight );
-
-			}
-
-		}
-
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function CanvasTexture( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {
-
-		Texture.call( this, canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
-
-		this.needsUpdate = true;
-
-	}
-
-	CanvasTexture.prototype = Object.create( Texture.prototype );
-	CanvasTexture.prototype.constructor = CanvasTexture;
-
-	/**
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function WebGLSpriteRenderer( renderer, gl, state, textures, capabilities ) {
-
-		var vertexBuffer, elementBuffer;
-		var program, attributes, uniforms;
-
-		var texture;
-
-		// decompose matrixWorld
-
-		var spritePosition = new Vector3();
-		var spriteRotation = new Quaternion();
-		var spriteScale = new Vector3();
-
-		function init() {
-
-			var vertices = new Float32Array( [
-				- 0.5, - 0.5, 0, 0,
-				  0.5, - 0.5, 1, 0,
-				  0.5, 0.5, 1, 1,
-				- 0.5, 0.5, 0, 1
-			] );
-
-			var faces = new Uint16Array( [
-				0, 1, 2,
-				0, 2, 3
-			] );
-
-			vertexBuffer = gl.createBuffer();
-			elementBuffer = gl.createBuffer();
-
-			gl.bindBuffer( gl.ARRAY_BUFFER, vertexBuffer );
-			gl.bufferData( gl.ARRAY_BUFFER, vertices, gl.STATIC_DRAW );
-
-			gl.bindBuffer( gl.ELEMENT_ARRAY_BUFFER, elementBuffer );
-			gl.bufferData( gl.ELEMENT_ARRAY_BUFFER, faces, gl.STATIC_DRAW );
-
-			program = createProgram();
-
-			attributes = {
-				position: gl.getAttribLocation( program, 'position' ),
-				uv: gl.getAttribLocation( program, 'uv' )
-			};
-
-			uniforms = {
-				uvOffset: gl.getUniformLocation( program, 'uvOffset' ),
-				uvScale: gl.getUniformLocation( program, 'uvScale' ),
-
-				rotation: gl.getUniformLocation( program, 'rotation' ),
-				center: gl.getUniformLocation( program, 'center' ),
-				scale: gl.getUniformLocation( program, 'scale' ),
-
-				color: gl.getUniformLocation( program, 'color' ),
-				map: gl.getUniformLocation( program, 'map' ),
-				opacity: gl.getUniformLocation( program, 'opacity' ),
-
-				modelViewMatrix: gl.getUniformLocation( program, 'modelViewMatrix' ),
-				projectionMatrix: gl.getUniformLocation( program, 'projectionMatrix' ),
-
-				fogType: gl.getUniformLocation( program, 'fogType' ),
-				fogDensity: gl.getUniformLocation( program, 'fogDensity' ),
-				fogNear: gl.getUniformLocation( program, 'fogNear' ),
-				fogFar: gl.getUniformLocation( program, 'fogFar' ),
-				fogColor: gl.getUniformLocation( program, 'fogColor' ),
-				fogDepth: gl.getUniformLocation( program, 'fogDepth' ),
-
-				alphaTest: gl.getUniformLocation( program, 'alphaTest' )
-			};
-
-			var canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
-			canvas.width = 8;
-			canvas.height = 8;
-
-			var context = canvas.getContext( '2d' );
-			context.fillStyle = 'white';
-			context.fillRect( 0, 0, 8, 8 );
-
-			texture = new CanvasTexture( canvas );
-
-		}
-
-		this.render = function ( sprites, scene, camera ) {
-
-			if ( sprites.length === 0 ) return;
-
-			// setup gl
-
-			if ( program === undefined ) {
-
-				init();
-
-			}
-
-			state.useProgram( program );
-
-			state.initAttributes();
-			state.enableAttribute( attributes.position );
-			state.enableAttribute( attributes.uv );
-			state.disableUnusedAttributes();
-
-			state.disable( gl.CULL_FACE );
-			state.enable( gl.BLEND );
-
-			gl.bindBuffer( gl.ARRAY_BUFFER, vertexBuffer );
-			gl.vertexAttribPointer( attributes.position, 2, gl.FLOAT, false, 2 * 8, 0 );
-			gl.vertexAttribPointer( attributes.uv, 2, gl.FLOAT, false, 2 * 8, 8 );
-
-			gl.bindBuffer( gl.ELEMENT_ARRAY_BUFFER, elementBuffer );
-
-			gl.uniformMatrix4fv( uniforms.projectionMatrix, false, camera.projectionMatrix.elements );
-
-			state.activeTexture( gl.TEXTURE0 );
-			gl.uniform1i( uniforms.map, 0 );
-
-			var oldFogType = 0;
-			var sceneFogType = 0;
-			var fog = scene.fog;
-
-			if ( fog ) {
-
-				gl.uniform3f( uniforms.fogColor, fog.color.r, fog.color.g, fog.color.b );
-
-				if ( fog.isFog ) {
-
-					gl.uniform1f( uniforms.fogNear, fog.near );
-					gl.uniform1f( uniforms.fogFar, fog.far );
-
-					gl.uniform1i( uniforms.fogType, 1 );
-					oldFogType = 1;
-					sceneFogType = 1;
-
-				} else if ( fog.isFogExp2 ) {
-
-					gl.uniform1f( uniforms.fogDensity, fog.density );
-
-					gl.uniform1i( uniforms.fogType, 2 );
-					oldFogType = 2;
-					sceneFogType = 2;
-
-				}
-
-			} else {
-
-				gl.uniform1i( uniforms.fogType, 0 );
-				oldFogType = 0;
-				sceneFogType = 0;
-
-			}
-
-
-			// update positions and sort
-
-			for ( var i = 0, l = sprites.length; i < l; i ++ ) {
-
-				var sprite = sprites[ i ];
-
-				sprite.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, sprite.matrixWorld );
-				sprite.z = - sprite.modelViewMatrix.elements[ 14 ];
-
-			}
-
-			sprites.sort( painterSortStable );
-
-			// render all sprites
-
-			var scale = [];
-			var center = [];
-
-			for ( var i = 0, l = sprites.length; i < l; i ++ ) {
-
-				var sprite = sprites[ i ];
-				var material = sprite.material;
-
-				if ( material.visible === false ) continue;
-
-				sprite.onBeforeRender( renderer, scene, camera, undefined, material, undefined );
-
-				gl.uniform1f( uniforms.alphaTest, material.alphaTest );
-				gl.uniformMatrix4fv( uniforms.modelViewMatrix, false, sprite.modelViewMatrix.elements );
-
-				sprite.matrixWorld.decompose( spritePosition, spriteRotation, spriteScale );
-
-				scale[ 0 ] = spriteScale.x;
-				scale[ 1 ] = spriteScale.y;
-
-				center[ 0 ] = sprite.center.x - 0.5;
-				center[ 1 ] = sprite.center.y - 0.5;
-
-				var fogType = 0;
-
-				if ( scene.fog && material.fog ) {
-
-					fogType = sceneFogType;
-
-				}
-
-				if ( oldFogType !== fogType ) {
-
-					gl.uniform1i( uniforms.fogType, fogType );
-					oldFogType = fogType;
-
-				}
-
-				if ( material.map !== null ) {
-
-					gl.uniform2f( uniforms.uvOffset, material.map.offset.x, material.map.offset.y );
-					gl.uniform2f( uniforms.uvScale, material.map.repeat.x, material.map.repeat.y );
-
-				} else {
-
-					gl.uniform2f( uniforms.uvOffset, 0, 0 );
-					gl.uniform2f( uniforms.uvScale, 1, 1 );
-
-				}
-
-				gl.uniform1f( uniforms.opacity, material.opacity );
-				gl.uniform3f( uniforms.color, material.color.r, material.color.g, material.color.b );
-
-				gl.uniform1f( uniforms.rotation, material.rotation );
-				gl.uniform2fv( uniforms.center, center );
-				gl.uniform2fv( uniforms.scale, scale );
-
-				state.setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha );
-				state.buffers.depth.setTest( material.depthTest );
-				state.buffers.depth.setMask( material.depthWrite );
-				state.buffers.color.setMask( material.colorWrite );
-
-				textures.setTexture2D( material.map || texture, 0 );
-
-				gl.drawElements( gl.TRIANGLES, 6, gl.UNSIGNED_SHORT, 0 );
-
-				sprite.onAfterRender( renderer, scene, camera, undefined, material, undefined );
-
-			}
-
-			// restore gl
-
-			state.enable( gl.CULL_FACE );
-
-			state.reset();
-
-		};
-
-		function createProgram() {
-
-			var program = gl.createProgram();
-
-			var vertexShader = gl.createShader( gl.VERTEX_SHADER );
-			var fragmentShader = gl.createShader( gl.FRAGMENT_SHADER );
-
-			gl.shaderSource( vertexShader, [
-
-				'precision ' + capabilities.precision + ' float;',
-
-				'#define SHADER_NAME ' + 'SpriteMaterial',
-
-				'uniform mat4 modelViewMatrix;',
-				'uniform mat4 projectionMatrix;',
-				'uniform float rotation;',
-				'uniform vec2 center;',
-				'uniform vec2 scale;',
-				'uniform vec2 uvOffset;',
-				'uniform vec2 uvScale;',
-
-				'attribute vec2 position;',
-				'attribute vec2 uv;',
-
-				'varying vec2 vUV;',
-				'varying float fogDepth;',
-
-				'void main() {',
-
-				'	vUV = uvOffset + uv * uvScale;',
-
-				'	vec2 alignedPosition = ( position - center ) * scale;',
-
-				'	vec2 rotatedPosition;',
-				'	rotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;',
-				'	rotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;',
-
-				'	vec4 mvPosition;',
-
-				'	mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );',
-				'	mvPosition.xy += rotatedPosition;',
-
-				'	gl_Position = projectionMatrix * mvPosition;',
-
-				'	fogDepth = - mvPosition.z;',
-
-				'}'
-
-			].join( '\n' ) );
-
-			gl.shaderSource( fragmentShader, [
-
-				'precision ' + capabilities.precision + ' float;',
-
-				'#define SHADER_NAME ' + 'SpriteMaterial',
-
-				'uniform vec3 color;',
-				'uniform sampler2D map;',
-				'uniform float opacity;',
-
-				'uniform int fogType;',
-				'uniform vec3 fogColor;',
-				'uniform float fogDensity;',
-				'uniform float fogNear;',
-				'uniform float fogFar;',
-				'uniform float alphaTest;',
-
-				'varying vec2 vUV;',
-				'varying float fogDepth;',
-
-				'void main() {',
-
-				'	vec4 texture = texture2D( map, vUV );',
-
-				'	gl_FragColor = vec4( color * texture.xyz, texture.a * opacity );',
-
-				'	if ( gl_FragColor.a < alphaTest ) discard;',
-
-				'	if ( fogType > 0 ) {',
-
-				'		float fogFactor = 0.0;',
-
-				'		if ( fogType == 1 ) {',
-
-				'			fogFactor = smoothstep( fogNear, fogFar, fogDepth );',
-
-				'		} else {',
-
-				'			const float LOG2 = 1.442695;',
-				'			fogFactor = exp2( - fogDensity * fogDensity * fogDepth * fogDepth * LOG2 );',
-				'			fogFactor = 1.0 - clamp( fogFactor, 0.0, 1.0 );',
-
-				'		}',
-
-				'		gl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );',
-
-				'	}',
-
-				'}'
-
-			].join( '\n' ) );
-
-			gl.compileShader( vertexShader );
-			gl.compileShader( fragmentShader );
-
-			gl.attachShader( program, vertexShader );
-			gl.attachShader( program, fragmentShader );
-
-			gl.linkProgram( program );
-
-			return program;
-
-		}
-
-		function painterSortStable( a, b ) {
-
-			if ( a.renderOrder !== b.renderOrder ) {
-
-				return a.renderOrder - b.renderOrder;
-
-			} else if ( a.z !== b.z ) {
-
-				return b.z - a.z;
-
-			} else {
-
-				return b.id - a.id;
-
-			}
-
-		}
-
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function WebGLState( gl, extensions, utils ) {
-
-		function ColorBuffer() {
-
-			var locked = false;
-
-			var color = new Vector4();
-			var currentColorMask = null;
-			var currentColorClear = new Vector4( 0, 0, 0, 0 );
-
-			return {
-
-				setMask: function ( colorMask ) {
-
-					if ( currentColorMask !== colorMask && ! locked ) {
-
-						gl.colorMask( colorMask, colorMask, colorMask, colorMask );
-						currentColorMask = colorMask;
-
-					}
-
-				},
-
-				setLocked: function ( lock ) {
-
-					locked = lock;
-
-				},
-
-				setClear: function ( r, g, b, a, premultipliedAlpha ) {
-
-					if ( premultipliedAlpha === true ) {
-
-						r *= a; g *= a; b *= a;
-
-					}
-
-					color.set( r, g, b, a );
-
-					if ( currentColorClear.equals( color ) === false ) {
-
-						gl.clearColor( r, g, b, a );
-						currentColorClear.copy( color );
-
-					}
-
-				},
-
-				reset: function () {
-
-					locked = false;
-
-					currentColorMask = null;
-					currentColorClear.set( - 1, 0, 0, 0 ); // set to invalid state
-
-				}
-
-			};
-
-		}
-
-		function DepthBuffer() {
-
-			var locked = false;
-
-			var currentDepthMask = null;
-			var currentDepthFunc = null;
-			var currentDepthClear = null;
-
-			return {
-
-				setTest: function ( depthTest ) {
-
-					if ( depthTest ) {
-
-						enable( gl.DEPTH_TEST );
-
-					} else {
-
-						disable( gl.DEPTH_TEST );
-
-					}
-
-				},
-
-				setMask: function ( depthMask ) {
-
-					if ( currentDepthMask !== depthMask && ! locked ) {
-
-						gl.depthMask( depthMask );
-						currentDepthMask = depthMask;
-
-					}
-
-				},
-
-				setFunc: function ( depthFunc ) {
-
-					if ( currentDepthFunc !== depthFunc ) {
-
-						if ( depthFunc ) {
-
-							switch ( depthFunc ) {
-
-								case NeverDepth:
-
-									gl.depthFunc( gl.NEVER );
-									break;
-
-								case AlwaysDepth:
-
-									gl.depthFunc( gl.ALWAYS );
-									break;
-
-								case LessDepth:
-
-									gl.depthFunc( gl.LESS );
-									break;
-
-								case LessEqualDepth:
-
-									gl.depthFunc( gl.LEQUAL );
-									break;
-
-								case EqualDepth:
-
-									gl.depthFunc( gl.EQUAL );
-									break;
-
-								case GreaterEqualDepth:
-
-									gl.depthFunc( gl.GEQUAL );
-									break;
-
-								case GreaterDepth:
-
-									gl.depthFunc( gl.GREATER );
-									break;
-
-								case NotEqualDepth:
-
-									gl.depthFunc( gl.NOTEQUAL );
-									break;
-
-								default:
-
-									gl.depthFunc( gl.LEQUAL );
-
-							}
-
-						} else {
-
-							gl.depthFunc( gl.LEQUAL );
-
-						}
-
-						currentDepthFunc = depthFunc;
-
-					}
-
-				},
-
-				setLocked: function ( lock ) {
-
-					locked = lock;
-
-				},
-
-				setClear: function ( depth ) {
-
-					if ( currentDepthClear !== depth ) {
-
-						gl.clearDepth( depth );
-						currentDepthClear = depth;
-
-					}
-
-				},
-
-				reset: function () {
-
-					locked = false;
-
-					currentDepthMask = null;
-					currentDepthFunc = null;
-					currentDepthClear = null;
-
-				}
-
-			};
-
-		}
-
-		function StencilBuffer() {
-
-			var locked = false;
-
-			var currentStencilMask = null;
-			var currentStencilFunc = null;
-			var currentStencilRef = null;
-			var currentStencilFuncMask = null;
-			var currentStencilFail = null;
-			var currentStencilZFail = null;
-			var currentStencilZPass = null;
-			var currentStencilClear = null;
-
-			return {
-
-				setTest: function ( stencilTest ) {
-
-					if ( stencilTest ) {
-
-						enable( gl.STENCIL_TEST );
-
-					} else {
-
-						disable( gl.STENCIL_TEST );
-
-					}
-
-				},
-
-				setMask: function ( stencilMask ) {
-
-					if ( currentStencilMask !== stencilMask && ! locked ) {
-
-						gl.stencilMask( stencilMask );
-						currentStencilMask = stencilMask;
-
-					}
-
-				},
-
-				setFunc: function ( stencilFunc, stencilRef, stencilMask ) {
-
-					if ( currentStencilFunc !== stencilFunc ||
-					     currentStencilRef 	!== stencilRef 	||
-					     currentStencilFuncMask !== stencilMask ) {
-
-						gl.stencilFunc( stencilFunc, stencilRef, stencilMask );
-
-						currentStencilFunc = stencilFunc;
-						currentStencilRef = stencilRef;
-						currentStencilFuncMask = stencilMask;
-
-					}
-
-				},
-
-				setOp: function ( stencilFail, stencilZFail, stencilZPass ) {
-
-					if ( currentStencilFail	 !== stencilFail 	||
-					     currentStencilZFail !== stencilZFail ||
-					     currentStencilZPass !== stencilZPass ) {
-
-						gl.stencilOp( stencilFail, stencilZFail, stencilZPass );
-
-						currentStencilFail = stencilFail;
-						currentStencilZFail = stencilZFail;
-						currentStencilZPass = stencilZPass;
-
-					}
-
-				},
-
-				setLocked: function ( lock ) {
-
-					locked = lock;
-
-				},
-
-				setClear: function ( stencil ) {
-
-					if ( currentStencilClear !== stencil ) {
-
-						gl.clearStencil( stencil );
-						currentStencilClear = stencil;
-
-					}
-
-				},
-
-				reset: function () {
-
-					locked = false;
-
-					currentStencilMask = null;
-					currentStencilFunc = null;
-					currentStencilRef = null;
-					currentStencilFuncMask = null;
-					currentStencilFail = null;
-					currentStencilZFail = null;
-					currentStencilZPass = null;
-					currentStencilClear = null;
-
-				}
-
-			};
-
-		}
-
-		//
-
-		var colorBuffer = new ColorBuffer();
-		var depthBuffer = new DepthBuffer();
-		var stencilBuffer = new StencilBuffer();
-
-		var maxVertexAttributes = gl.getParameter( gl.MAX_VERTEX_ATTRIBS );
-		var newAttributes = new Uint8Array( maxVertexAttributes );
-		var enabledAttributes = new Uint8Array( maxVertexAttributes );
-		var attributeDivisors = new Uint8Array( maxVertexAttributes );
-
-		var capabilities = {};
-
-		var compressedTextureFormats = null;
-
-		var currentProgram = null;
-
-		var currentBlending = null;
-		var currentBlendEquation = null;
-		var currentBlendSrc = null;
-		var currentBlendDst = null;
-		var currentBlendEquationAlpha = null;
-		var currentBlendSrcAlpha = null;
-		var currentBlendDstAlpha = null;
-		var currentPremultipledAlpha = false;
-
-		var currentFlipSided = null;
-		var currentCullFace = null;
-
-		var currentLineWidth = null;
-
-		var currentPolygonOffsetFactor = null;
-		var currentPolygonOffsetUnits = null;
-
-		var maxTextures = gl.getParameter( gl.MAX_COMBINED_TEXTURE_IMAGE_UNITS );
-
-		var lineWidthAvailable = false;
-		var version = 0;
-		var glVersion = gl.getParameter( gl.VERSION );
-
-		if ( glVersion.indexOf( 'WebGL' ) !== - 1 ) {
-
-		   version = parseFloat( /^WebGL\ ([0-9])/.exec( glVersion )[ 1 ] );
-		   lineWidthAvailable = ( version >= 1.0 );
-
-		} else if ( glVersion.indexOf( 'OpenGL ES' ) !== - 1 ) {
-
-		   version = parseFloat( /^OpenGL\ ES\ ([0-9])/.exec( glVersion )[ 1 ] );
-		   lineWidthAvailable = ( version >= 2.0 );
-
-		}
-
-		var currentTextureSlot = null;
-		var currentBoundTextures = {};
-
-		var currentScissor = new Vector4();
-		var currentViewport = new Vector4();
-
-		function createTexture( type, target, count ) {
-
-			var data = new Uint8Array( 4 ); // 4 is required to match default unpack alignment of 4.
-			var texture = gl.createTexture();
-
-			gl.bindTexture( type, texture );
-			gl.texParameteri( type, gl.TEXTURE_MIN_FILTER, gl.NEAREST );
-			gl.texParameteri( type, gl.TEXTURE_MAG_FILTER, gl.NEAREST );
-
-			for ( var i = 0; i < count; i ++ ) {
-
-				gl.texImage2D( target + i, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, data );
-
-			}
-
-			return texture;
-
-		}
-
-		var emptyTextures = {};
-		emptyTextures[ gl.TEXTURE_2D ] = createTexture( gl.TEXTURE_2D, gl.TEXTURE_2D, 1 );
-		emptyTextures[ gl.TEXTURE_CUBE_MAP ] = createTexture( gl.TEXTURE_CUBE_MAP, gl.TEXTURE_CUBE_MAP_POSITIVE_X, 6 );
-
-		// init
-
-		colorBuffer.setClear( 0, 0, 0, 1 );
-		depthBuffer.setClear( 1 );
-		stencilBuffer.setClear( 0 );
-
-		enable( gl.DEPTH_TEST );
-		depthBuffer.setFunc( LessEqualDepth );
-
-		setFlipSided( false );
-		setCullFace( CullFaceBack );
-		enable( gl.CULL_FACE );
-
-		enable( gl.BLEND );
-		setBlending( NormalBlending );
-
-		//
-
-		function initAttributes() {
-
-			for ( var i = 0, l = newAttributes.length; i < l; i ++ ) {
-
-				newAttributes[ i ] = 0;
-
-			}
-
-		}
-
-		function enableAttribute( attribute ) {
-
-			newAttributes[ attribute ] = 1;
-
-			if ( enabledAttributes[ attribute ] === 0 ) {
-
-				gl.enableVertexAttribArray( attribute );
-				enabledAttributes[ attribute ] = 1;
-
-			}
-
-			if ( attributeDivisors[ attribute ] !== 0 ) {
-
-				var extension = extensions.get( 'ANGLE_instanced_arrays' );
-
-				extension.vertexAttribDivisorANGLE( attribute, 0 );
-				attributeDivisors[ attribute ] = 0;
-
-			}
-
-		}
-
-		function enableAttributeAndDivisor( attribute, meshPerAttribute ) {
-
-			newAttributes[ attribute ] = 1;
-
-			if ( enabledAttributes[ attribute ] === 0 ) {
-
-				gl.enableVertexAttribArray( attribute );
-				enabledAttributes[ attribute ] = 1;
-
-			}
-
-			if ( attributeDivisors[ attribute ] !== meshPerAttribute ) {
-
-				var extension = extensions.get( 'ANGLE_instanced_arrays' );
-
-				extension.vertexAttribDivisorANGLE( attribute, meshPerAttribute );
-				attributeDivisors[ attribute ] = meshPerAttribute;
-
-			}
-
-		}
-
-		function disableUnusedAttributes() {
-
-			for ( var i = 0, l = enabledAttributes.length; i !== l; ++ i ) {
-
-				if ( enabledAttributes[ i ] !== newAttributes[ i ] ) {
-
-					gl.disableVertexAttribArray( i );
-					enabledAttributes[ i ] = 0;
-
-				}
-
-			}
-
-		}
-
-		function enable( id ) {
-
-			if ( capabilities[ id ] !== true ) {
-
-				gl.enable( id );
-				capabilities[ id ] = true;
-
-			}
-
-		}
-
-		function disable( id ) {
-
-			if ( capabilities[ id ] !== false ) {
-
-				gl.disable( id );
-				capabilities[ id ] = false;
-
-			}
-
-		}
-
-		function getCompressedTextureFormats() {
-
-			if ( compressedTextureFormats === null ) {
-
-				compressedTextureFormats = [];
-
-				if ( extensions.get( 'WEBGL_compressed_texture_pvrtc' ) ||
-				     extensions.get( 'WEBGL_compressed_texture_s3tc' ) ||
-				     extensions.get( 'WEBGL_compressed_texture_etc1' ) ||
-				     extensions.get( 'WEBGL_compressed_texture_astc' ) ) {
-
-					var formats = gl.getParameter( gl.COMPRESSED_TEXTURE_FORMATS );
-
-					for ( var i = 0; i < formats.length; i ++ ) {
-
-						compressedTextureFormats.push( formats[ i ] );
-
-					}
-
-				}
-
-			}
-
-			return compressedTextureFormats;
-
-		}
-
-		function useProgram( program ) {
-
-			if ( currentProgram !== program ) {
-
-				gl.useProgram( program );
-
-				currentProgram = program;
-
-				return true;
-
-			}
-
-			return false;
-
-		}
-
-		function setBlending( blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha ) {
-
-			if ( blending !== NoBlending ) {
-
-				enable( gl.BLEND );
-
-			} else {
-
-				disable( gl.BLEND );
-
-			}
-
-			if ( blending !== CustomBlending ) {
-
-				if ( blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha ) {
-
-					switch ( blending ) {
-
-						case AdditiveBlending:
-
-							if ( premultipliedAlpha ) {
-
-								gl.blendEquationSeparate( gl.FUNC_ADD, gl.FUNC_ADD );
-								gl.blendFuncSeparate( gl.ONE, gl.ONE, gl.ONE, gl.ONE );
-
-							} else {
-
-								gl.blendEquation( gl.FUNC_ADD );
-								gl.blendFunc( gl.SRC_ALPHA, gl.ONE );
-
-							}
-							break;
-
-						case SubtractiveBlending:
-
-							if ( premultipliedAlpha ) {
-
-								gl.blendEquationSeparate( gl.FUNC_ADD, gl.FUNC_ADD );
-								gl.blendFuncSeparate( gl.ZERO, gl.ZERO, gl.ONE_MINUS_SRC_COLOR, gl.ONE_MINUS_SRC_ALPHA );
-
-							} else {
-
-								gl.blendEquation( gl.FUNC_ADD );
-								gl.blendFunc( gl.ZERO, gl.ONE_MINUS_SRC_COLOR );
-
-							}
-							break;
-
-						case MultiplyBlending:
-
-							if ( premultipliedAlpha ) {
-
-								gl.blendEquationSeparate( gl.FUNC_ADD, gl.FUNC_ADD );
-								gl.blendFuncSeparate( gl.ZERO, gl.SRC_COLOR, gl.ZERO, gl.SRC_ALPHA );
-
-							} else {
-
-								gl.blendEquation( gl.FUNC_ADD );
-								gl.blendFunc( gl.ZERO, gl.SRC_COLOR );
-
-							}
-							break;
-
-						default:
-
-							if ( premultipliedAlpha ) {
-
-								gl.blendEquationSeparate( gl.FUNC_ADD, gl.FUNC_ADD );
-								gl.blendFuncSeparate( gl.ONE, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA );
-
-							} else {
-
-								gl.blendEquationSeparate( gl.FUNC_ADD, gl.FUNC_ADD );
-								gl.blendFuncSeparate( gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA );
-
-							}
-
-					}
-
-				}
-
-				currentBlendEquation = null;
-				currentBlendSrc = null;
-				currentBlendDst = null;
-				currentBlendEquationAlpha = null;
-				currentBlendSrcAlpha = null;
-				currentBlendDstAlpha = null;
-
-			} else {
-
-				blendEquationAlpha = blendEquationAlpha || blendEquation;
-				blendSrcAlpha = blendSrcAlpha || blendSrc;
-				blendDstAlpha = blendDstAlpha || blendDst;
-
-				if ( blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha ) {
-
-					gl.blendEquationSeparate( utils.convert( blendEquation ), utils.convert( blendEquationAlpha ) );
-
-					currentBlendEquation = blendEquation;
-					currentBlendEquationAlpha = blendEquationAlpha;
-
-				}
-
-				if ( blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha ) {
-
-					gl.blendFuncSeparate( utils.convert( blendSrc ), utils.convert( blendDst ), utils.convert( blendSrcAlpha ), utils.convert( blendDstAlpha ) );
-
-					currentBlendSrc = blendSrc;
-					currentBlendDst = blendDst;
-					currentBlendSrcAlpha = blendSrcAlpha;
-					currentBlendDstAlpha = blendDstAlpha;
-
-				}
-
-			}
-
-			currentBlending = blending;
-			currentPremultipledAlpha = premultipliedAlpha;
-
-		}
-
-		function setMaterial( material, frontFaceCW ) {
-
-			material.side === DoubleSide
-				? disable( gl.CULL_FACE )
-				: enable( gl.CULL_FACE );
-
-			var flipSided = ( material.side === BackSide );
-			if ( frontFaceCW ) flipSided = ! flipSided;
-
-			setFlipSided( flipSided );
-
-			material.transparent === true
-				? setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha )
-				: setBlending( NoBlending );
-
-			depthBuffer.setFunc( material.depthFunc );
-			depthBuffer.setTest( material.depthTest );
-			depthBuffer.setMask( material.depthWrite );
-			colorBuffer.setMask( material.colorWrite );
-
-			setPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );
-
-		}
-
-		//
-
-		function setFlipSided( flipSided ) {
-
-			if ( currentFlipSided !== flipSided ) {
-
-				if ( flipSided ) {
-
-					gl.frontFace( gl.CW );
-
-				} else {
-
-					gl.frontFace( gl.CCW );
-
-				}
-
-				currentFlipSided = flipSided;
-
-			}
-
-		}
-
-		function setCullFace( cullFace ) {
-
-			if ( cullFace !== CullFaceNone ) {
-
-				enable( gl.CULL_FACE );
-
-				if ( cullFace !== currentCullFace ) {
-
-					if ( cullFace === CullFaceBack ) {
-
-						gl.cullFace( gl.BACK );
-
-					} else if ( cullFace === CullFaceFront ) {
-
-						gl.cullFace( gl.FRONT );
-
-					} else {
-
-						gl.cullFace( gl.FRONT_AND_BACK );
-
-					}
-
-				}
-
-			} else {
-
-				disable( gl.CULL_FACE );
-
-			}
-
-			currentCullFace = cullFace;
-
-		}
-
-		function setLineWidth( width ) {
-
-			if ( width !== currentLineWidth ) {
-
-				if ( lineWidthAvailable ) gl.lineWidth( width );
-
-				currentLineWidth = width;
-
-			}
-
-		}
-
-		function setPolygonOffset( polygonOffset, factor, units ) {
-
-			if ( polygonOffset ) {
-
-				enable( gl.POLYGON_OFFSET_FILL );
-
-				if ( currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units ) {
-
-					gl.polygonOffset( factor, units );
-
-					currentPolygonOffsetFactor = factor;
-					currentPolygonOffsetUnits = units;
-
-				}
-
-			} else {
-
-				disable( gl.POLYGON_OFFSET_FILL );
-
-			}
-
-		}
-
-		function setScissorTest( scissorTest ) {
-
-			if ( scissorTest ) {
-
-				enable( gl.SCISSOR_TEST );
-
-			} else {
-
-				disable( gl.SCISSOR_TEST );
-
-			}
-
-		}
-
-		// texture
-
-		function activeTexture( webglSlot ) {
-
-			if ( webglSlot === undefined ) webglSlot = gl.TEXTURE0 + maxTextures - 1;
-
-			if ( currentTextureSlot !== webglSlot ) {
-
-				gl.activeTexture( webglSlot );
-				currentTextureSlot = webglSlot;
-
-			}
-
-		}
-
-		function bindTexture( webglType, webglTexture ) {
-
-			if ( currentTextureSlot === null ) {
-
-				activeTexture();
-
-			}
-
-			var boundTexture = currentBoundTextures[ currentTextureSlot ];
-
-			if ( boundTexture === undefined ) {
-
-				boundTexture = { type: undefined, texture: undefined };
-				currentBoundTextures[ currentTextureSlot ] = boundTexture;
-
-			}
-
-			if ( boundTexture.type !== webglType || boundTexture.texture !== webglTexture ) {
-
-				gl.bindTexture( webglType, webglTexture || emptyTextures[ webglType ] );
-
-				boundTexture.type = webglType;
-				boundTexture.texture = webglTexture;
-
-			}
-
-		}
-
-		function compressedTexImage2D() {
-
-			try {
-
-				gl.compressedTexImage2D.apply( gl, arguments );
-
-			} catch ( error ) {
-
-				console.error( 'THREE.WebGLState:', error );
-
-			}
-
-		}
-
-		function texImage2D() {
-
-			try {
-
-				gl.texImage2D.apply( gl, arguments );
-
-			} catch ( error ) {
-
-				console.error( 'THREE.WebGLState:', error );
-
-			}
-
-		}
-
-		//
-
-		function scissor( scissor ) {
-
-			if ( currentScissor.equals( scissor ) === false ) {
-
-				gl.scissor( scissor.x, scissor.y, scissor.z, scissor.w );
-				currentScissor.copy( scissor );
-
-			}
-
-		}
-
-		function viewport( viewport ) {
-
-			if ( currentViewport.equals( viewport ) === false ) {
-
-				gl.viewport( viewport.x, viewport.y, viewport.z, viewport.w );
-				currentViewport.copy( viewport );
-
-			}
-
-		}
-
-		//
-
-		function reset() {
-
-			for ( var i = 0; i < enabledAttributes.length; i ++ ) {
-
-				if ( enabledAttributes[ i ] === 1 ) {
-
-					gl.disableVertexAttribArray( i );
-					enabledAttributes[ i ] = 0;
-
-				}
-
-			}
-
-			capabilities = {};
-
-			compressedTextureFormats = null;
-
-			currentTextureSlot = null;
-			currentBoundTextures = {};
-
-			currentProgram = null;
-
-			currentBlending = null;
-
-			currentFlipSided = null;
-			currentCullFace = null;
-
-			colorBuffer.reset();
-			depthBuffer.reset();
-			stencilBuffer.reset();
-
-		}
-
-		return {
-
-			buffers: {
-				color: colorBuffer,
-				depth: depthBuffer,
-				stencil: stencilBuffer
-			},
-
-			initAttributes: initAttributes,
-			enableAttribute: enableAttribute,
-			enableAttributeAndDivisor: enableAttributeAndDivisor,
-			disableUnusedAttributes: disableUnusedAttributes,
-			enable: enable,
-			disable: disable,
-			getCompressedTextureFormats: getCompressedTextureFormats,
-
-			useProgram: useProgram,
-
-			setBlending: setBlending,
-			setMaterial: setMaterial,
-
-			setFlipSided: setFlipSided,
-			setCullFace: setCullFace,
-
-			setLineWidth: setLineWidth,
-			setPolygonOffset: setPolygonOffset,
-
-			setScissorTest: setScissorTest,
-
-			activeTexture: activeTexture,
-			bindTexture: bindTexture,
-			compressedTexImage2D: compressedTexImage2D,
-			texImage2D: texImage2D,
-
-			scissor: scissor,
-			viewport: viewport,
-
-			reset: reset
-
-		};
-
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {
-
-		var _isWebGL2 = ( typeof WebGL2RenderingContext !== 'undefined' && _gl instanceof WebGL2RenderingContext ); /* global WebGL2RenderingContext */
-		var _videoTextures = {};
-		var _canvas;
-
-		//
-
-		function clampToMaxSize( image, maxSize ) {
-
-			if ( image.width > maxSize || image.height > maxSize ) {
-
-				if ( 'data' in image ) {
-
-					console.warn( 'THREE.WebGLRenderer: image in DataTexture is too big (' + image.width + 'x' + image.height + ').' );
-					return;
-
-				}
-
-				// Warning: Scaling through the canvas will only work with images that use
-				// premultiplied alpha.
-
-				var scale = maxSize / Math.max( image.width, image.height );
-
-				var canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
-				canvas.width = Math.floor( image.width * scale );
-				canvas.height = Math.floor( image.height * scale );
-
-				var context = canvas.getContext( '2d' );
-				context.drawImage( image, 0, 0, image.width, image.height, 0, 0, canvas.width, canvas.height );
-
-				console.warn( 'THREE.WebGLRenderer: image is too big (' + image.width + 'x' + image.height + '). Resized to ' + canvas.width + 'x' + canvas.height, image );
-
-				return canvas;
-
-			}
-
-			return image;
-
-		}
-
-		function isPowerOfTwo( image ) {
-
-			return _Math.isPowerOfTwo( image.width ) && _Math.isPowerOfTwo( image.height );
-
-		}
-
-		function makePowerOfTwo( image ) {
-
-			if ( image instanceof HTMLImageElement || image instanceof HTMLCanvasElement || image instanceof ImageBitmap ) {
-
-				if ( _canvas === undefined ) _canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
-
-				_canvas.width = _Math.floorPowerOfTwo( image.width );
-				_canvas.height = _Math.floorPowerOfTwo( image.height );
-
-				var context = _canvas.getContext( '2d' );
-				context.drawImage( image, 0, 0, _canvas.width, _canvas.height );
-
-				console.warn( 'THREE.WebGLRenderer: image is not power of two (' + image.width + 'x' + image.height + '). Resized to ' + _canvas.width + 'x' + _canvas.height, image );
-
-				return _canvas;
-
-			}
-
-			return image;
-
-		}
-
-		function textureNeedsPowerOfTwo( texture ) {
-
-			return ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) ||
-				( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter );
-
-		}
-
-		function textureNeedsGenerateMipmaps( texture, isPowerOfTwo ) {
-
-			return texture.generateMipmaps && isPowerOfTwo &&
-				texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
-
-		}
-
-		function generateMipmap( target, texture, width, height ) {
-
-			_gl.generateMipmap( target );
-
-			var textureProperties = properties.get( texture );
-			textureProperties.__maxMipLevel = Math.log2( Math.max( width, height ) );
-
-		}
-
-		// Fallback filters for non-power-of-2 textures
-
-		function filterFallback( f ) {
-
-			if ( f === NearestFilter || f === NearestMipMapNearestFilter || f === NearestMipMapLinearFilter ) {
-
-				return _gl.NEAREST;
-
-			}
-
-			return _gl.LINEAR;
-
-		}
-
-		//
-
-		function onTextureDispose( event ) {
-
-			var texture = event.target;
-
-			texture.removeEventListener( 'dispose', onTextureDispose );
-
-			deallocateTexture( texture );
-
-			if ( texture.isVideoTexture ) {
-
-				delete _videoTextures[ texture.id ];
-
-			}
-
-			info.memory.textures --;
-
-		}
-
-		function onRenderTargetDispose( event ) {
-
-			var renderTarget = event.target;
-
-			renderTarget.removeEventListener( 'dispose', onRenderTargetDispose );
-
-			deallocateRenderTarget( renderTarget );
-
-			info.memory.textures --;
-
-		}
-
-		//
-
-		function deallocateTexture( texture ) {
-
-			var textureProperties = properties.get( texture );
-
-			if ( texture.image && textureProperties.__image__webglTextureCube ) {
-
-				// cube texture
-
-				_gl.deleteTexture( textureProperties.__image__webglTextureCube );
-
-			} else {
-
-				// 2D texture
-
-				if ( textureProperties.__webglInit === undefined ) return;
-
-				_gl.deleteTexture( textureProperties.__webglTexture );
-
-			}
-
-			// remove all webgl properties
-			properties.remove( texture );
-
-		}
-
-		function deallocateRenderTarget( renderTarget ) {
-
-			var renderTargetProperties = properties.get( renderTarget );
-			var textureProperties = properties.get( renderTarget.texture );
-
-			if ( ! renderTarget ) return;
-
-			if ( textureProperties.__webglTexture !== undefined ) {
-
-				_gl.deleteTexture( textureProperties.__webglTexture );
-
-			}
-
-			if ( renderTarget.depthTexture ) {
-
-				renderTarget.depthTexture.dispose();
-
-			}
-
-			if ( renderTarget.isWebGLRenderTargetCube ) {
-
-				for ( var i = 0; i < 6; i ++ ) {
-
-					_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );
-					if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );
-
-				}
-
-			} else {
-
-				_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );
-				if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );
-
-			}
-
-			properties.remove( renderTarget.texture );
-			properties.remove( renderTarget );
-
-		}
-
-		//
-
-
-
-		function setTexture2D( texture, slot ) {
-
-			var textureProperties = properties.get( texture );
-
-			if ( texture.isVideoTexture ) updateVideoTexture( texture );
-
-			if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
-
-				var image = texture.image;
-
-				if ( image === undefined ) {
-
-					console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is undefined', texture );
-
-				} else if ( image.complete === false ) {
-
-					console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete', texture );
-
-				} else {
-
-					uploadTexture( textureProperties, texture, slot );
-					return;
-
-				}
-
-			}
-
-			state.activeTexture( _gl.TEXTURE0 + slot );
-			state.bindTexture( _gl.TEXTURE_2D, textureProperties.__webglTexture );
-
-		}
-
-		function setTextureCube( texture, slot ) {
-
-			var textureProperties = properties.get( texture );
-
-			if ( texture.image.length === 6 ) {
-
-				if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
-
-					if ( ! textureProperties.__image__webglTextureCube ) {
-
-						texture.addEventListener( 'dispose', onTextureDispose );
-
-						textureProperties.__image__webglTextureCube = _gl.createTexture();
-
-						info.memory.textures ++;
-
-					}
-
-					state.activeTexture( _gl.TEXTURE0 + slot );
-					state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__image__webglTextureCube );
-
-					_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );
-
-					var isCompressed = ( texture && texture.isCompressedTexture );
-					var isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );
-
-					var cubeImage = [];
-
-					for ( var i = 0; i < 6; i ++ ) {
-
-						if ( ! isCompressed && ! isDataTexture ) {
-
-							cubeImage[ i ] = clampToMaxSize( texture.image[ i ], capabilities.maxCubemapSize );
-
-						} else {
-
-							cubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];
-
-						}
-
-					}
-
-					var image = cubeImage[ 0 ],
-						isPowerOfTwoImage = isPowerOfTwo( image ),
-						glFormat = utils.convert( texture.format ),
-						glType = utils.convert( texture.type );
-
-					setTextureParameters( _gl.TEXTURE_CUBE_MAP, texture, isPowerOfTwoImage );
-
-					for ( var i = 0; i < 6; i ++ ) {
-
-						if ( ! isCompressed ) {
-
-							if ( isDataTexture ) {
-
-								state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );
-
-							} else {
-
-								state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glFormat, glFormat, glType, cubeImage[ i ] );
-
-							}
-
-						} else {
-
-							var mipmap, mipmaps = cubeImage[ i ].mipmaps;
-
-							for ( var j = 0, jl = mipmaps.length; j < jl; j ++ ) {
-
-								mipmap = mipmaps[ j ];
-
-								if ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {
-
-									if ( state.getCompressedTextureFormats().indexOf( glFormat ) > - 1 ) {
-
-										state.compressedTexImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glFormat, mipmap.width, mipmap.height, 0, mipmap.data );
-
-									} else {
-
-										console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );
-
-									}
-
-								} else {
-
-									state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
-
-								}
-
-							}
-
-						}
-
-					}
-
-					if ( ! isCompressed ) {
-
-						textureProperties.__maxMipLevel = 0;
-
-					} else {
-
-						textureProperties.__maxMipLevel = mipmaps.length - 1;
-
-					}
-
-					if ( textureNeedsGenerateMipmaps( texture, isPowerOfTwoImage ) ) {
-
-						// We assume images for cube map have the same size.
-						generateMipmap( _gl.TEXTURE_CUBE_MAP, texture, image.width, image.height );
-
-					}
-
-					textureProperties.__version = texture.version;
-
-					if ( texture.onUpdate ) texture.onUpdate( texture );
-
-				} else {
-
-					state.activeTexture( _gl.TEXTURE0 + slot );
-					state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__image__webglTextureCube );
-
-				}
-
-			}
-
-		}
-
-		function setTextureCubeDynamic( texture, slot ) {
-
-			state.activeTexture( _gl.TEXTURE0 + slot );
-			state.bindTexture( _gl.TEXTURE_CUBE_MAP, properties.get( texture ).__webglTexture );
-
-		}
-
-		function setTextureParameters( textureType, texture, isPowerOfTwoImage ) {
-
-			var extension;
-
-			if ( isPowerOfTwoImage ) {
-
-				_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, utils.convert( texture.wrapS ) );
-				_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, utils.convert( texture.wrapT ) );
-
-				_gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, utils.convert( texture.magFilter ) );
-				_gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, utils.convert( texture.minFilter ) );
-
-			} else {
-
-				_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, _gl.CLAMP_TO_EDGE );
-				_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, _gl.CLAMP_TO_EDGE );
-
-				if ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) {
-
-					console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.', texture );
-
-				}
-
-				_gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, filterFallback( texture.magFilter ) );
-				_gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, filterFallback( texture.minFilter ) );
-
-				if ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) {
-
-					console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.', texture );
-
-				}
-
-			}
-
-			extension = extensions.get( 'EXT_texture_filter_anisotropic' );
-
-			if ( extension ) {
-
-				if ( texture.type === FloatType && extensions.get( 'OES_texture_float_linear' ) === null ) return;
-				if ( texture.type === HalfFloatType && extensions.get( 'OES_texture_half_float_linear' ) === null ) return;
-
-				if ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {
-
-					_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );
-					properties.get( texture ).__currentAnisotropy = texture.anisotropy;
-
-				}
-
-			}
-
-		}
-
-		function uploadTexture( textureProperties, texture, slot ) {
-
-			if ( textureProperties.__webglInit === undefined ) {
-
-				textureProperties.__webglInit = true;
-
-				texture.addEventListener( 'dispose', onTextureDispose );
-
-				textureProperties.__webglTexture = _gl.createTexture();
-
-				info.memory.textures ++;
-
-			}
-
-			state.activeTexture( _gl.TEXTURE0 + slot );
-			state.bindTexture( _gl.TEXTURE_2D, textureProperties.__webglTexture );
-
-			_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );
-			_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha );
-			_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment );
-
-			var image = clampToMaxSize( texture.image, capabilities.maxTextureSize );
-
-			if ( textureNeedsPowerOfTwo( texture ) && isPowerOfTwo( image ) === false ) {
-
-				image = makePowerOfTwo( image );
-
-			}
-
-			var isPowerOfTwoImage = isPowerOfTwo( image ),
-				glFormat = utils.convert( texture.format ),
-				glType = utils.convert( texture.type );
-
-			setTextureParameters( _gl.TEXTURE_2D, texture, isPowerOfTwoImage );
-
-			var mipmap, mipmaps = texture.mipmaps;
-
-			if ( texture.isDepthTexture ) {
-
-				// populate depth texture with dummy data
-
-				var internalFormat = _gl.DEPTH_COMPONENT;
-
-				if ( texture.type === FloatType ) {
-
-					if ( ! _isWebGL2 ) throw new Error( 'Float Depth Texture only supported in WebGL2.0' );
-					internalFormat = _gl.DEPTH_COMPONENT32F;
-
-				} else if ( _isWebGL2 ) {
-
-					// WebGL 2.0 requires signed internalformat for glTexImage2D
-					internalFormat = _gl.DEPTH_COMPONENT16;
-
-				}
-
-				if ( texture.format === DepthFormat && internalFormat === _gl.DEPTH_COMPONENT ) {
-
-					// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
-					// DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT
-					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
-					if ( texture.type !== UnsignedShortType && texture.type !== UnsignedIntType ) {
-
-						console.warn( 'THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.' );
-
-						texture.type = UnsignedShortType;
-						glType = utils.convert( texture.type );
-
-					}
-
-				}
-
-				// Depth stencil textures need the DEPTH_STENCIL internal format
-				// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
-				if ( texture.format === DepthStencilFormat ) {
-
-					internalFormat = _gl.DEPTH_STENCIL;
-
-					// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
-					// DEPTH_STENCIL and type is not UNSIGNED_INT_24_8_WEBGL.
-					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
-					if ( texture.type !== UnsignedInt248Type ) {
-
-						console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );
-
-						texture.type = UnsignedInt248Type;
-						glType = utils.convert( texture.type );
-
-					}
-
-				}
-
-				state.texImage2D( _gl.TEXTURE_2D, 0, internalFormat, image.width, image.height, 0, glFormat, glType, null );
-
-			} else if ( texture.isDataTexture ) {
-
-				// use manually created mipmaps if available
-				// if there are no manual mipmaps
-				// set 0 level mipmap and then use GL to generate other mipmap levels
-
-				if ( mipmaps.length > 0 && isPowerOfTwoImage ) {
-
-					for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
-
-						mipmap = mipmaps[ i ];
-						state.texImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
-
-					}
-
-					texture.generateMipmaps = false;
-					textureProperties.__maxMipLevel = mipmaps.length - 1;
-
-				} else {
-
-					state.texImage2D( _gl.TEXTURE_2D, 0, glFormat, image.width, image.height, 0, glFormat, glType, image.data );
-					textureProperties.__maxMipLevel = 0;
-
-				}
-
-			} else if ( texture.isCompressedTexture ) {
-
-				for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
-
-					mipmap = mipmaps[ i ];
-
-					if ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {
-
-						if ( state.getCompressedTextureFormats().indexOf( glFormat ) > - 1 ) {
-
-							state.compressedTexImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, mipmap.data );
-
-						} else {
-
-							console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );
-
-						}
-
-					} else {
-
-						state.texImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
-
-					}
-
-				}
-
-				textureProperties.__maxMipLevel = mipmaps.length - 1;
-
-			} else {
-
-				// regular Texture (image, video, canvas)
-
-				// use manually created mipmaps if available
-				// if there are no manual mipmaps
-				// set 0 level mipmap and then use GL to generate other mipmap levels
-
-				if ( mipmaps.length > 0 && isPowerOfTwoImage ) {
-
-					for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
-
-						mipmap = mipmaps[ i ];
-						state.texImage2D( _gl.TEXTURE_2D, i, glFormat, glFormat, glType, mipmap );
-
-					}
-
-					texture.generateMipmaps = false;
-					textureProperties.__maxMipLevel = mipmaps.length - 1;
-
-				} else {
-
-					state.texImage2D( _gl.TEXTURE_2D, 0, glFormat, glFormat, glType, image );
-					textureProperties.__maxMipLevel = 0;
-
-				}
-
-			}
-
-			if ( textureNeedsGenerateMipmaps( texture, isPowerOfTwoImage ) ) {
-
-				generateMipmap( _gl.TEXTURE_2D, texture, image.width, image.height );
-
-			}
-
-			textureProperties.__version = texture.version;
-
-			if ( texture.onUpdate ) texture.onUpdate( texture );
-
-		}
-
-		// Render targets
-
-		// Setup storage for target texture and bind it to correct framebuffer
-		function setupFrameBufferTexture( framebuffer, renderTarget, attachment, textureTarget ) {
-
-			var glFormat = utils.convert( renderTarget.texture.format );
-			var glType = utils.convert( renderTarget.texture.type );
-			state.texImage2D( textureTarget, 0, glFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );
-			_gl.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
-			_gl.framebufferTexture2D( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( renderTarget.texture ).__webglTexture, 0 );
-			_gl.bindFramebuffer( _gl.FRAMEBUFFER, null );
-
-		}
-
-		// Setup storage for internal depth/stencil buffers and bind to correct framebuffer
-		function setupRenderBufferStorage( renderbuffer, renderTarget ) {
-
-			_gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer );
-
-			if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {
-
-				_gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.DEPTH_COMPONENT16, renderTarget.width, renderTarget.height );
-				_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer );
-
-			} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {
-
-				_gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.DEPTH_STENCIL, renderTarget.width, renderTarget.height );
-				_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer );
-
-			} else {
-
-				// FIXME: We don't support !depth !stencil
-				_gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.RGBA4, renderTarget.width, renderTarget.height );
-
-			}
-
-			_gl.bindRenderbuffer( _gl.RENDERBUFFER, null );
-
-		}
-
-		// Setup resources for a Depth Texture for a FBO (needs an extension)
-		function setupDepthTexture( framebuffer, renderTarget ) {
-
-			var isCube = ( renderTarget && renderTarget.isWebGLRenderTargetCube );
-			if ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );
-
-			_gl.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
-
-			if ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {
-
-				throw new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );
-
-			}
-
-			// upload an empty depth texture with framebuffer size
-			if ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||
-					renderTarget.depthTexture.image.width !== renderTarget.width ||
-					renderTarget.depthTexture.image.height !== renderTarget.height ) {
-
-				renderTarget.depthTexture.image.width = renderTarget.width;
-				renderTarget.depthTexture.image.height = renderTarget.height;
-				renderTarget.depthTexture.needsUpdate = true;
-
-			}
-
-			setTexture2D( renderTarget.depthTexture, 0 );
-
-			var webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;
-
-			if ( renderTarget.depthTexture.format === DepthFormat ) {
-
-				_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );
-
-			} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {
-
-				_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );
-
-			} else {
-
-				throw new Error( 'Unknown depthTexture format' );
-
-			}
-
-		}
-
-		// Setup GL resources for a non-texture depth buffer
-		function setupDepthRenderbuffer( renderTarget ) {
-
-			var renderTargetProperties = properties.get( renderTarget );
-
-			var isCube = ( renderTarget.isWebGLRenderTargetCube === true );
-
-			if ( renderTarget.depthTexture ) {
-
-				if ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );
-
-				setupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );
-
-			} else {
-
-				if ( isCube ) {
-
-					renderTargetProperties.__webglDepthbuffer = [];
-
-					for ( var i = 0; i < 6; i ++ ) {
-
-						_gl.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer[ i ] );
-						renderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();
-						setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget );
-
-					}
-
-				} else {
-
-					_gl.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer );
-					renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
-					setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget );
-
-				}
-
-			}
-
-			_gl.bindFramebuffer( _gl.FRAMEBUFFER, null );
-
-		}
-
-		// Set up GL resources for the render target
-		function setupRenderTarget( renderTarget ) {
-
-			var renderTargetProperties = properties.get( renderTarget );
-			var textureProperties = properties.get( renderTarget.texture );
-
-			renderTarget.addEventListener( 'dispose', onRenderTargetDispose );
-
-			textureProperties.__webglTexture = _gl.createTexture();
-
-			info.memory.textures ++;
-
-			var isCube = ( renderTarget.isWebGLRenderTargetCube === true );
-			var isTargetPowerOfTwo = isPowerOfTwo( renderTarget );
-
-			// Setup framebuffer
-
-			if ( isCube ) {
-
-				renderTargetProperties.__webglFramebuffer = [];
-
-				for ( var i = 0; i < 6; i ++ ) {
-
-					renderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();
-
-				}
-
-			} else {
-
-				renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();
-
-			}
-
-			// Setup color buffer
-
-			if ( isCube ) {
-
-				state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture );
-				setTextureParameters( _gl.TEXTURE_CUBE_MAP, renderTarget.texture, isTargetPowerOfTwo );
-
-				for ( var i = 0; i < 6; i ++ ) {
-
-					setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i );
-
-				}
-
-				if ( textureNeedsGenerateMipmaps( renderTarget.texture, isTargetPowerOfTwo ) ) {
-
-					generateMipmap( _gl.TEXTURE_CUBE_MAP, renderTarget.texture, renderTarget.width, renderTarget.height );
-
-				}
-
-				state.bindTexture( _gl.TEXTURE_CUBE_MAP, null );
-
-			} else {
-
-				state.bindTexture( _gl.TEXTURE_2D, textureProperties.__webglTexture );
-				setTextureParameters( _gl.TEXTURE_2D, renderTarget.texture, isTargetPowerOfTwo );
-				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_2D );
-
-				if ( textureNeedsGenerateMipmaps( renderTarget.texture, isTargetPowerOfTwo ) ) {
-
-					generateMipmap( _gl.TEXTURE_2D, renderTarget.texture, renderTarget.width, renderTarget.height );
-
-				}
-
-				state.bindTexture( _gl.TEXTURE_2D, null );
-
-			}
-
-			// Setup depth and stencil buffers
-
-			if ( renderTarget.depthBuffer ) {
-
-				setupDepthRenderbuffer( renderTarget );
-
-			}
-
-		}
-
-		function updateRenderTargetMipmap( renderTarget ) {
-
-			var texture = renderTarget.texture;
-			var isTargetPowerOfTwo = isPowerOfTwo( renderTarget );
-
-			if ( textureNeedsGenerateMipmaps( texture, isTargetPowerOfTwo ) ) {
-
-				var target = renderTarget.isWebGLRenderTargetCube ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;
-				var webglTexture = properties.get( texture ).__webglTexture;
-
-				state.bindTexture( target, webglTexture );
-				generateMipmap( target, texture, renderTarget.width, renderTarget.height );
-				state.bindTexture( target, null );
-
-			}
-
-		}
-
-		function updateVideoTexture( texture ) {
-
-			var id = texture.id;
-			var frame = info.render.frame;
-
-			// Check the last frame we updated the VideoTexture
-
-			if ( _videoTextures[ id ] !== frame ) {
-
-				_videoTextures[ id ] = frame;
-				texture.update();
-
-			}
-
-		}
-
-		this.setTexture2D = setTexture2D;
-		this.setTextureCube = setTextureCube;
-		this.setTextureCubeDynamic = setTextureCubeDynamic;
-		this.setupRenderTarget = setupRenderTarget;
-		this.updateRenderTargetMipmap = updateRenderTargetMipmap;
-
-	}
-
-	/**
-	 * @author thespite / http://www.twitter.com/thespite
-	 */
-
-	function WebGLUtils( gl, extensions ) {
-
-		function convert( p ) {
-
-			var extension;
-
-			if ( p === RepeatWrapping ) return gl.REPEAT;
-			if ( p === ClampToEdgeWrapping ) return gl.CLAMP_TO_EDGE;
-			if ( p === MirroredRepeatWrapping ) return gl.MIRRORED_REPEAT;
-
-			if ( p === NearestFilter ) return gl.NEAREST;
-			if ( p === NearestMipMapNearestFilter ) return gl.NEAREST_MIPMAP_NEAREST;
-			if ( p === NearestMipMapLinearFilter ) return gl.NEAREST_MIPMAP_LINEAR;
-
-			if ( p === LinearFilter ) return gl.LINEAR;
-			if ( p === LinearMipMapNearestFilter ) return gl.LINEAR_MIPMAP_NEAREST;
-			if ( p === LinearMipMapLinearFilter ) return gl.LINEAR_MIPMAP_LINEAR;
-
-			if ( p === UnsignedByteType ) return gl.UNSIGNED_BYTE;
-			if ( p === UnsignedShort4444Type ) return gl.UNSIGNED_SHORT_4_4_4_4;
-			if ( p === UnsignedShort5551Type ) return gl.UNSIGNED_SHORT_5_5_5_1;
-			if ( p === UnsignedShort565Type ) return gl.UNSIGNED_SHORT_5_6_5;
-
-			if ( p === ByteType ) return gl.BYTE;
-			if ( p === ShortType ) return gl.SHORT;
-			if ( p === UnsignedShortType ) return gl.UNSIGNED_SHORT;
-			if ( p === IntType ) return gl.INT;
-			if ( p === UnsignedIntType ) return gl.UNSIGNED_INT;
-			if ( p === FloatType ) return gl.FLOAT;
-
-			if ( p === HalfFloatType ) {
-
-				extension = extensions.get( 'OES_texture_half_float' );
-
-				if ( extension !== null ) return extension.HALF_FLOAT_OES;
-
-			}
-
-			if ( p === AlphaFormat ) return gl.ALPHA;
-			if ( p === RGBFormat ) return gl.RGB;
-			if ( p === RGBAFormat ) return gl.RGBA;
-			if ( p === LuminanceFormat ) return gl.LUMINANCE;
-			if ( p === LuminanceAlphaFormat ) return gl.LUMINANCE_ALPHA;
-			if ( p === DepthFormat ) return gl.DEPTH_COMPONENT;
-			if ( p === DepthStencilFormat ) return gl.DEPTH_STENCIL;
-
-			if ( p === AddEquation ) return gl.FUNC_ADD;
-			if ( p === SubtractEquation ) return gl.FUNC_SUBTRACT;
-			if ( p === ReverseSubtractEquation ) return gl.FUNC_REVERSE_SUBTRACT;
-
-			if ( p === ZeroFactor ) return gl.ZERO;
-			if ( p === OneFactor ) return gl.ONE;
-			if ( p === SrcColorFactor ) return gl.SRC_COLOR;
-			if ( p === OneMinusSrcColorFactor ) return gl.ONE_MINUS_SRC_COLOR;
-			if ( p === SrcAlphaFactor ) return gl.SRC_ALPHA;
-			if ( p === OneMinusSrcAlphaFactor ) return gl.ONE_MINUS_SRC_ALPHA;
-			if ( p === DstAlphaFactor ) return gl.DST_ALPHA;
-			if ( p === OneMinusDstAlphaFactor ) return gl.ONE_MINUS_DST_ALPHA;
-
-			if ( p === DstColorFactor ) return gl.DST_COLOR;
-			if ( p === OneMinusDstColorFactor ) return gl.ONE_MINUS_DST_COLOR;
-			if ( p === SrcAlphaSaturateFactor ) return gl.SRC_ALPHA_SATURATE;
-
-			if ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format ||
-				p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) {
-
-				extension = extensions.get( 'WEBGL_compressed_texture_s3tc' );
-
-				if ( extension !== null ) {
-
-					if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
-					if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
-					if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
-					if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;
-
-				}
-
-			}
-
-			if ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format ||
-				p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) {
-
-				extension = extensions.get( 'WEBGL_compressed_texture_pvrtc' );
-
-				if ( extension !== null ) {
-
-					if ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
-					if ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
-					if ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
-					if ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
-
-				}
-
-			}
-
-			if ( p === RGB_ETC1_Format ) {
-
-				extension = extensions.get( 'WEBGL_compressed_texture_etc1' );
-
-				if ( extension !== null ) return extension.COMPRESSED_RGB_ETC1_WEBGL;
-
-			}
-
-			if ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||
-				p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||
-				p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||
-				p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||
-				p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ) {
-
-				extension = extensions.get( 'WEBGL_compressed_texture_astc' );
-
-				if ( extension !== null ) {
-
-					return p;
-
-				}
-
-			}
-
-			if ( p === MinEquation || p === MaxEquation ) {
-
-				extension = extensions.get( 'EXT_blend_minmax' );
-
-				if ( extension !== null ) {
-
-					if ( p === MinEquation ) return extension.MIN_EXT;
-					if ( p === MaxEquation ) return extension.MAX_EXT;
-
-				}
-
-			}
-
-			if ( p === UnsignedInt248Type ) {
-
-				extension = extensions.get( 'WEBGL_depth_texture' );
-
-				if ( extension !== null ) return extension.UNSIGNED_INT_24_8_WEBGL;
-
-			}
-
-			return 0;
-
-		}
-
-		return { convert: convert };
-
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author greggman / http://games.greggman.com/
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 * @author tschw
-	 */
-
-	function PerspectiveCamera( fov, aspect, near, far ) {
-
-		Camera.call( this );
-
-		this.type = 'PerspectiveCamera';
-
-		this.fov = fov !== undefined ? fov : 50;
-		this.zoom = 1;
-
-		this.near = near !== undefined ? near : 0.1;
-		this.far = far !== undefined ? far : 2000;
-		this.focus = 10;
-
-		this.aspect = aspect !== undefined ? aspect : 1;
-		this.view = null;
-
-		this.filmGauge = 35;	// width of the film (default in millimeters)
-		this.filmOffset = 0;	// horizontal film offset (same unit as gauge)
-
-		this.updateProjectionMatrix();
-
-	}
-
-	PerspectiveCamera.prototype = Object.assign( Object.create( Camera.prototype ), {
-
-		constructor: PerspectiveCamera,
-
-		isPerspectiveCamera: true,
-
-		copy: function ( source, recursive ) {
-
-			Camera.prototype.copy.call( this, source, recursive );
-
-			this.fov = source.fov;
-			this.zoom = source.zoom;
-
-			this.near = source.near;
-			this.far = source.far;
-			this.focus = source.focus;
-
-			this.aspect = source.aspect;
-			this.view = source.view === null ? null : Object.assign( {}, source.view );
-
-			this.filmGauge = source.filmGauge;
-			this.filmOffset = source.filmOffset;
-
-			return this;
-
-		},
-
-		/**
-		 * Sets the FOV by focal length in respect to the current .filmGauge.
-		 *
-		 * The default film gauge is 35, so that the focal length can be specified for
-		 * a 35mm (full frame) camera.
-		 *
-		 * Values for focal length and film gauge must have the same unit.
-		 */
-		setFocalLength: function ( focalLength ) {
-
-			// see http://www.bobatkins.com/photography/technical/field_of_view.html
-			var vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;
-
-			this.fov = _Math.RAD2DEG * 2 * Math.atan( vExtentSlope );
-			this.updateProjectionMatrix();
-
-		},
-
-		/**
-		 * Calculates the focal length from the current .fov and .filmGauge.
-		 */
-		getFocalLength: function () {
-
-			var vExtentSlope = Math.tan( _Math.DEG2RAD * 0.5 * this.fov );
-
-			return 0.5 * this.getFilmHeight() / vExtentSlope;
-
-		},
-
-		getEffectiveFOV: function () {
-
-			return _Math.RAD2DEG * 2 * Math.atan(
-				Math.tan( _Math.DEG2RAD * 0.5 * this.fov ) / this.zoom );
-
-		},
-
-		getFilmWidth: function () {
-
-			// film not completely covered in portrait format (aspect < 1)
-			return this.filmGauge * Math.min( this.aspect, 1 );
-
-		},
-
-		getFilmHeight: function () {
-
-			// film not completely covered in landscape format (aspect > 1)
-			return this.filmGauge / Math.max( this.aspect, 1 );
-
-		},
-
-		/**
-		 * Sets an offset in a larger frustum. This is useful for multi-window or
-		 * multi-monitor/multi-machine setups.
-		 *
-		 * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
-		 * the monitors are in grid like this
-		 *
-		 *   +---+---+---+
-		 *   | A | B | C |
-		 *   +---+---+---+
-		 *   | D | E | F |
-		 *   +---+---+---+
-		 *
-		 * then for each monitor you would call it like this
-		 *
-		 *   var w = 1920;
-		 *   var h = 1080;
-		 *   var fullWidth = w * 3;
-		 *   var fullHeight = h * 2;
-		 *
-		 *   --A--
-		 *   camera.setOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
-		 *   --B--
-		 *   camera.setOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
-		 *   --C--
-		 *   camera.setOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
-		 *   --D--
-		 *   camera.setOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
-		 *   --E--
-		 *   camera.setOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
-		 *   --F--
-		 *   camera.setOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
-		 *
-		 *   Note there is no reason monitors have to be the same size or in a grid.
-		 */
-		setViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {
-
-			this.aspect = fullWidth / fullHeight;
-
-			if ( this.view === null ) {
-
-				this.view = {
-					enabled: true,
-					fullWidth: 1,
-					fullHeight: 1,
-					offsetX: 0,
-					offsetY: 0,
-					width: 1,
-					height: 1
-				};
-
-			}
-
-			this.view.enabled = true;
-			this.view.fullWidth = fullWidth;
-			this.view.fullHeight = fullHeight;
-			this.view.offsetX = x;
-			this.view.offsetY = y;
-			this.view.width = width;
-			this.view.height = height;
-
-			this.updateProjectionMatrix();
-
-		},
-
-		clearViewOffset: function () {
-
-			if ( this.view !== null ) {
-
-				this.view.enabled = false;
-
-			}
-
-			this.updateProjectionMatrix();
-
-		},
-
-		updateProjectionMatrix: function () {
-
-			var near = this.near,
-				top = near * Math.tan(
-					_Math.DEG2RAD * 0.5 * this.fov ) / this.zoom,
-				height = 2 * top,
-				width = this.aspect * height,
-				left = - 0.5 * width,
-				view = this.view;
-
-			if ( this.view !== null && this.view.enabled ) {
-
-				var fullWidth = view.fullWidth,
-					fullHeight = view.fullHeight;
-
-				left += view.offsetX * width / fullWidth;
-				top -= view.offsetY * height / fullHeight;
-				width *= view.width / fullWidth;
-				height *= view.height / fullHeight;
-
-			}
-
-			var skew = this.filmOffset;
-			if ( skew !== 0 ) left += near * skew / this.getFilmWidth();
-
-			this.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far );
-
-		},
-
-		toJSON: function ( meta ) {
-
-			var data = Object3D.prototype.toJSON.call( this, meta );
-
-			data.object.fov = this.fov;
-			data.object.zoom = this.zoom;
-
-			data.object.near = this.near;
-			data.object.far = this.far;
-			data.object.focus = this.focus;
-
-			data.object.aspect = this.aspect;
-
-			if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );
-
-			data.object.filmGauge = this.filmGauge;
-			data.object.filmOffset = this.filmOffset;
-
-			return data;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function ArrayCamera( array ) {
-
-		PerspectiveCamera.call( this );
-
-		this.cameras = array || [];
-
-	}
-
-	ArrayCamera.prototype = Object.assign( Object.create( PerspectiveCamera.prototype ), {
-
-		constructor: ArrayCamera,
-
-		isArrayCamera: true
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function WebVRManager( renderer ) {
-
-		var scope = this;
-
-		var device = null;
-		var frameData = null;
-
-		var poseTarget = null;
-
-		var standingMatrix = new Matrix4();
-		var standingMatrixInverse = new Matrix4();
-
-		if ( typeof window !== 'undefined' && 'VRFrameData' in window ) {
-
-			frameData = new window.VRFrameData();
-
-		}
-
-		var matrixWorldInverse = new Matrix4();
-		var tempQuaternion = new Quaternion();
-		var tempPosition = new Vector3();
-
-		var cameraL = new PerspectiveCamera();
-		cameraL.bounds = new Vector4( 0.0, 0.0, 0.5, 1.0 );
-		cameraL.layers.enable( 1 );
-
-		var cameraR = new PerspectiveCamera();
-		cameraR.bounds = new Vector4( 0.5, 0.0, 0.5, 1.0 );
-		cameraR.layers.enable( 2 );
-
-		var cameraVR = new ArrayCamera( [ cameraL, cameraR ] );
-		cameraVR.layers.enable( 1 );
-		cameraVR.layers.enable( 2 );
-
-		//
-
-		var currentSize, currentPixelRatio;
-
-		function onVRDisplayPresentChange() {
-
-			if ( device !== null && device.isPresenting ) {
-
-				var eyeParameters = device.getEyeParameters( 'left' );
-				var renderWidth = eyeParameters.renderWidth;
-				var renderHeight = eyeParameters.renderHeight;
-
-				currentPixelRatio = renderer.getPixelRatio();
-				currentSize = renderer.getSize();
-
-				renderer.setDrawingBufferSize( renderWidth * 2, renderHeight, 1 );
-
-			} else if ( scope.enabled ) {
-
-				renderer.setDrawingBufferSize( currentSize.width, currentSize.height, currentPixelRatio );
-
-			}
-
-		}
-
-		if ( typeof window !== 'undefined' ) {
-
-			window.addEventListener( 'vrdisplaypresentchange', onVRDisplayPresentChange, false );
-
-		}
-
-		//
-
-		this.enabled = false;
-		this.userHeight = 1.6;
-
-		this.getDevice = function () {
-
-			return device;
-
-		};
-
-		this.setDevice = function ( value ) {
-
-			if ( value !== undefined ) device = value;
-
-		};
-
-		this.setPoseTarget = function ( object ) {
-
-			if ( object !== undefined ) poseTarget = object;
-
-		};
-
-		this.getCamera = function ( camera ) {
-
-			if ( device === null ) return camera;
-
-			device.depthNear = camera.near;
-			device.depthFar = camera.far;
-
-			device.getFrameData( frameData );
-
-			//
-
-			var stageParameters = device.stageParameters;
-
-			if ( stageParameters ) {
-
-				standingMatrix.fromArray( stageParameters.sittingToStandingTransform );
-
-			} else {
-
-				standingMatrix.makeTranslation( 0, scope.userHeight, 0 );
-
-			}
-
-
-			var pose = frameData.pose;
-			var poseObject = poseTarget !== null ? poseTarget : camera;
-
-			// We want to manipulate poseObject by its position and quaternion components since users may rely on them.
-			poseObject.matrix.copy( standingMatrix );
-			poseObject.matrix.decompose( poseObject.position, poseObject.quaternion, poseObject.scale );
-
-			if ( pose.orientation !== null ) {
-
-				tempQuaternion.fromArray( pose.orientation );
-				poseObject.quaternion.multiply( tempQuaternion );
-
-			}
-
-			if ( pose.position !== null ) {
-
-				tempQuaternion.setFromRotationMatrix( standingMatrix );
-				tempPosition.fromArray( pose.position );
-				tempPosition.applyQuaternion( tempQuaternion );
-				poseObject.position.add( tempPosition );
-
-			}
-
-			poseObject.updateMatrixWorld();
-
-			if ( device.isPresenting === false ) return camera;
-
-			//
-
-			cameraL.near = camera.near;
-			cameraR.near = camera.near;
-
-			cameraL.far = camera.far;
-			cameraR.far = camera.far;
-
-			cameraVR.matrixWorld.copy( camera.matrixWorld );
-			cameraVR.matrixWorldInverse.copy( camera.matrixWorldInverse );
-
-			cameraL.matrixWorldInverse.fromArray( frameData.leftViewMatrix );
-			cameraR.matrixWorldInverse.fromArray( frameData.rightViewMatrix );
-
-			// TODO (mrdoob) Double check this code
-
-			standingMatrixInverse.getInverse( standingMatrix );
-
-			cameraL.matrixWorldInverse.multiply( standingMatrixInverse );
-			cameraR.matrixWorldInverse.multiply( standingMatrixInverse );
-
-			var parent = poseObject.parent;
-
-			if ( parent !== null ) {
-
-				matrixWorldInverse.getInverse( parent.matrixWorld );
-
-				cameraL.matrixWorldInverse.multiply( matrixWorldInverse );
-				cameraR.matrixWorldInverse.multiply( matrixWorldInverse );
-
-			}
-
-			// envMap and Mirror needs camera.matrixWorld
-
-			cameraL.matrixWorld.getInverse( cameraL.matrixWorldInverse );
-			cameraR.matrixWorld.getInverse( cameraR.matrixWorldInverse );
-
-			cameraL.projectionMatrix.fromArray( frameData.leftProjectionMatrix );
-			cameraR.projectionMatrix.fromArray( frameData.rightProjectionMatrix );
-
-			// HACK (mrdoob)
-			// https://github.com/w3c/webvr/issues/203
-
-			cameraVR.projectionMatrix.copy( cameraL.projectionMatrix );
-
-			//
-
-			var layers = device.getLayers();
-
-			if ( layers.length ) {
-
-				var layer = layers[ 0 ];
-
-				if ( layer.leftBounds !== null && layer.leftBounds.length === 4 ) {
-
-					cameraL.bounds.fromArray( layer.leftBounds );
-
-				}
-
-				if ( layer.rightBounds !== null && layer.rightBounds.length === 4 ) {
-
-					cameraR.bounds.fromArray( layer.rightBounds );
-
-				}
-
-			}
-
-			return cameraVR;
-
-		};
-
-		this.getStandingMatrix = function () {
-
-			return standingMatrix;
-
-		};
-
-		this.submitFrame = function () {
-
-			if ( device && device.isPresenting ) device.submitFrame();
-
-		};
-
-		this.dispose = function () {
-
-			if ( typeof window !== 'undefined' ) {
-
-				window.removeEventListener( 'vrdisplaypresentchange', onVRDisplayPresentChange );
-
-			}
-
-		};
-
-	}
-
-	/**
-	 * @author supereggbert / http://www.paulbrunt.co.uk/
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author szimek / https://github.com/szimek/
-	 * @author tschw
-	 */
-
-	function WebGLRenderer( parameters ) {
-
-		console.log( 'THREE.WebGLRenderer', REVISION );
-
-		parameters = parameters || {};
-
-		var _canvas = parameters.canvas !== undefined ? parameters.canvas : document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' ),
-			_context = parameters.context !== undefined ? parameters.context : null,
-
-			_alpha = parameters.alpha !== undefined ? parameters.alpha : false,
-			_depth = parameters.depth !== undefined ? parameters.depth : true,
-			_stencil = parameters.stencil !== undefined ? parameters.stencil : true,
-			_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
-			_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
-			_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,
-			_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default';
-
-		var currentRenderList = null;
-		var currentRenderState = null;
-
-		// public properties
-
-		this.domElement = _canvas;
-		this.context = null;
-
-		// clearing
-
-		this.autoClear = true;
-		this.autoClearColor = true;
-		this.autoClearDepth = true;
-		this.autoClearStencil = true;
-
-		// scene graph
-
-		this.sortObjects = true;
-
-		// user-defined clipping
-
-		this.clippingPlanes = [];
-		this.localClippingEnabled = false;
-
-		// physically based shading
-
-		this.gammaFactor = 2.0;	// for backwards compatibility
-		this.gammaInput = false;
-		this.gammaOutput = false;
-
-		// physical lights
-
-		this.physicallyCorrectLights = false;
-
-		// tone mapping
-
-		this.toneMapping = LinearToneMapping;
-		this.toneMappingExposure = 1.0;
-		this.toneMappingWhitePoint = 1.0;
-
-		// morphs
-
-		this.maxMorphTargets = 8;
-		this.maxMorphNormals = 4;
-
-		// internal properties
-
-		var _this = this,
-
-			_isContextLost = false,
-
-			// internal state cache
-
-			_currentRenderTarget = null,
-			_currentFramebuffer = null,
-			_currentMaterialId = - 1,
-			_currentGeometryProgram = '',
-
-			_currentCamera = null,
-			_currentArrayCamera = null,
-
-			_currentViewport = new Vector4(),
-			_currentScissor = new Vector4(),
-			_currentScissorTest = null,
-
-			//
-
-			_usedTextureUnits = 0,
-
-			//
-
-			_width = _canvas.width,
-			_height = _canvas.height,
-
-			_pixelRatio = 1,
-
-			_viewport = new Vector4( 0, 0, _width, _height ),
-			_scissor = new Vector4( 0, 0, _width, _height ),
-			_scissorTest = false,
-
-			// frustum
-
-			_frustum = new Frustum(),
-
-			// clipping
-
-			_clipping = new WebGLClipping(),
-			_clippingEnabled = false,
-			_localClippingEnabled = false,
-
-			// camera matrices cache
-
-			_projScreenMatrix = new Matrix4(),
-
-			_vector3 = new Vector3();
-
-		function getTargetPixelRatio() {
-
-			return _currentRenderTarget === null ? _pixelRatio : 1;
-
-		}
-
-		// initialize
-
-		var _gl;
-
-		try {
-
-			var contextAttributes = {
-				alpha: _alpha,
-				depth: _depth,
-				stencil: _stencil,
-				antialias: _antialias,
-				premultipliedAlpha: _premultipliedAlpha,
-				preserveDrawingBuffer: _preserveDrawingBuffer,
-				powerPreference: _powerPreference
-			};
-
-			// event listeners must be registered before WebGL context is created, see #12753
-
-			_canvas.addEventListener( 'webglcontextlost', onContextLost, false );
-			_canvas.addEventListener( 'webglcontextrestored', onContextRestore, false );
-
-			_gl = _context || _canvas.getContext( 'webgl', contextAttributes ) || _canvas.getContext( 'experimental-webgl', contextAttributes );
-
-			if ( _gl === null ) {
-
-				if ( _canvas.getContext( 'webgl' ) !== null ) {
-
-					throw new Error( 'Error creating WebGL context with your selected attributes.' );
-
-				} else {
-
-					throw new Error( 'Error creating WebGL context.' );
-
-				}
-
-			}
-
-			// Some experimental-webgl implementations do not have getShaderPrecisionFormat
-
-			if ( _gl.getShaderPrecisionFormat === undefined ) {
-
-				_gl.getShaderPrecisionFormat = function () {
-
-					return { 'rangeMin': 1, 'rangeMax': 1, 'precision': 1 };
-
-				};
-
-			}
-
-		} catch ( error ) {
-
-			console.error( 'THREE.WebGLRenderer: ' + error.message );
-
-		}
-
-		var extensions, capabilities, state, info;
-		var properties, textures, attributes, geometries, objects;
-		var programCache, renderLists, renderStates;
-
-		var background, morphtargets, bufferRenderer, indexedBufferRenderer;
-		var spriteRenderer;
-
-		var utils;
-
-		function initGLContext() {
-
-			extensions = new WebGLExtensions( _gl );
-			extensions.get( 'WEBGL_depth_texture' );
-			extensions.get( 'OES_texture_float' );
-			extensions.get( 'OES_texture_float_linear' );
-			extensions.get( 'OES_texture_half_float' );
-			extensions.get( 'OES_texture_half_float_linear' );
-			extensions.get( 'OES_standard_derivatives' );
-			extensions.get( 'OES_element_index_uint' );
-			extensions.get( 'ANGLE_instanced_arrays' );
-
-			utils = new WebGLUtils( _gl, extensions );
-
-			capabilities = new WebGLCapabilities( _gl, extensions, parameters );
-
-			state = new WebGLState( _gl, extensions, utils );
-			state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ) );
-			state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ) );
-
-			info = new WebGLInfo( _gl );
-			properties = new WebGLProperties();
-			textures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );
-			attributes = new WebGLAttributes( _gl );
-			geometries = new WebGLGeometries( _gl, attributes, info );
-			objects = new WebGLObjects( geometries, info );
-			morphtargets = new WebGLMorphtargets( _gl );
-			programCache = new WebGLPrograms( _this, extensions, capabilities );
-			renderLists = new WebGLRenderLists();
-			renderStates = new WebGLRenderStates();
-
-			background = new WebGLBackground( _this, state, geometries, _premultipliedAlpha );
-
-			bufferRenderer = new WebGLBufferRenderer( _gl, extensions, info );
-			indexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info );
-
-			spriteRenderer = new WebGLSpriteRenderer( _this, _gl, state, textures, capabilities );
-
-			info.programs = programCache.programs;
-
-			_this.context = _gl;
-			_this.capabilities = capabilities;
-			_this.extensions = extensions;
-			_this.properties = properties;
-			_this.renderLists = renderLists;
-			_this.state = state;
-			_this.info = info;
-
-		}
-
-		initGLContext();
-
-		// vr
-
-		var vr = new WebVRManager( _this );
-
-		this.vr = vr;
-
-		// shadow map
-
-		var shadowMap = new WebGLShadowMap( _this, objects, capabilities.maxTextureSize );
-
-		this.shadowMap = shadowMap;
-
-		// API
-
-		this.getContext = function () {
-
-			return _gl;
-
-		};
-
-		this.getContextAttributes = function () {
-
-			return _gl.getContextAttributes();
-
-		};
-
-		this.forceContextLoss = function () {
-
-			var extension = extensions.get( 'WEBGL_lose_context' );
-			if ( extension ) extension.loseContext();
-
-		};
-
-		this.forceContextRestore = function () {
-
-			var extension = extensions.get( 'WEBGL_lose_context' );
-			if ( extension ) extension.restoreContext();
-
-		};
-
-		this.getPixelRatio = function () {
-
-			return _pixelRatio;
-
-		};
-
-		this.setPixelRatio = function ( value ) {
-
-			if ( value === undefined ) return;
-
-			_pixelRatio = value;
-
-			this.setSize( _width, _height, false );
-
-		};
-
-		this.getSize = function () {
-
-			return {
-				width: _width,
-				height: _height
-			};
-
-		};
-
-		this.setSize = function ( width, height, updateStyle ) {
-
-			var device = vr.getDevice();
-
-			if ( device && device.isPresenting ) {
-
-				console.warn( 'THREE.WebGLRenderer: Can\'t change size while VR device is presenting.' );
-				return;
-
-			}
-
-			_width = width;
-			_height = height;
-
-			_canvas.width = width * _pixelRatio;
-			_canvas.height = height * _pixelRatio;
-
-			if ( updateStyle !== false ) {
-
-				_canvas.style.width = width + 'px';
-				_canvas.style.height = height + 'px';
-
-			}
-
-			this.setViewport( 0, 0, width, height );
-
-		};
-
-		this.getDrawingBufferSize = function () {
-
-			return {
-				width: _width * _pixelRatio,
-				height: _height * _pixelRatio
-			};
-
-		};
-
-		this.setDrawingBufferSize = function ( width, height, pixelRatio ) {
-
-			_width = width;
-			_height = height;
-
-			_pixelRatio = pixelRatio;
-
-			_canvas.width = width * pixelRatio;
-			_canvas.height = height * pixelRatio;
-
-			this.setViewport( 0, 0, width, height );
-
-		};
-
-		this.getCurrentViewport = function () {
-
-			return _currentViewport;
-
-		};
-
-		this.setViewport = function ( x, y, width, height ) {
-
-			_viewport.set( x, _height - y - height, width, height );
-			state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ) );
-
-		};
-
-		this.setScissor = function ( x, y, width, height ) {
-
-			_scissor.set( x, _height - y - height, width, height );
-			state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ) );
-
-		};
-
-		this.setScissorTest = function ( boolean ) {
-
-			state.setScissorTest( _scissorTest = boolean );
-
-		};
-
-		// Clearing
-
-		this.getClearColor = function () {
-
-			return background.getClearColor();
-
-		};
-
-		this.setClearColor = function () {
-
-			background.setClearColor.apply( background, arguments );
-
-		};
-
-		this.getClearAlpha = function () {
-
-			return background.getClearAlpha();
-
-		};
-
-		this.setClearAlpha = function () {
-
-			background.setClearAlpha.apply( background, arguments );
-
-		};
-
-		this.clear = function ( color, depth, stencil ) {
-
-			var bits = 0;
-
-			if ( color === undefined || color ) bits |= _gl.COLOR_BUFFER_BIT;
-			if ( depth === undefined || depth ) bits |= _gl.DEPTH_BUFFER_BIT;
-			if ( stencil === undefined || stencil ) bits |= _gl.STENCIL_BUFFER_BIT;
-
-			_gl.clear( bits );
-
-		};
-
-		this.clearColor = function () {
-
-			this.clear( true, false, false );
-
-		};
-
-		this.clearDepth = function () {
-
-			this.clear( false, true, false );
-
-		};
-
-		this.clearStencil = function () {
-
-			this.clear( false, false, true );
-
-		};
-
-		this.clearTarget = function ( renderTarget, color, depth, stencil ) {
-
-			this.setRenderTarget( renderTarget );
-			this.clear( color, depth, stencil );
-
-		};
-
-		//
-
-		this.dispose = function () {
-
-			_canvas.removeEventListener( 'webglcontextlost', onContextLost, false );
-			_canvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );
-
-			renderLists.dispose();
-			renderStates.dispose();
-			properties.dispose();
-			objects.dispose();
-
-			vr.dispose();
-
-			stopAnimation();
-
-		};
-
-		// Events
-
-		function onContextLost( event ) {
-
-			event.preventDefault();
-
-			console.log( 'THREE.WebGLRenderer: Context Lost.' );
-
-			_isContextLost = true;
-
-		}
-
-		function onContextRestore( /* event */ ) {
-
-			console.log( 'THREE.WebGLRenderer: Context Restored.' );
-
-			_isContextLost = false;
-
-			initGLContext();
-
-		}
-
-		function onMaterialDispose( event ) {
-
-			var material = event.target;
-
-			material.removeEventListener( 'dispose', onMaterialDispose );
-
-			deallocateMaterial( material );
-
-		}
-
-		// Buffer deallocation
-
-		function deallocateMaterial( material ) {
-
-			releaseMaterialProgramReference( material );
-
-			properties.remove( material );
-
-		}
-
-
-		function releaseMaterialProgramReference( material ) {
-
-			var programInfo = properties.get( material ).program;
-
-			material.program = undefined;
-
-			if ( programInfo !== undefined ) {
-
-				programCache.releaseProgram( programInfo );
-
-			}
-
-		}
-
-		// Buffer rendering
-
-		function renderObjectImmediate( object, program, material ) {
-
-			object.render( function ( object ) {
-
-				_this.renderBufferImmediate( object, program, material );
-
-			} );
-
-		}
-
-		this.renderBufferImmediate = function ( object, program, material ) {
-
-			state.initAttributes();
-
-			var buffers = properties.get( object );
-
-			if ( object.hasPositions && ! buffers.position ) buffers.position = _gl.createBuffer();
-			if ( object.hasNormals && ! buffers.normal ) buffers.normal = _gl.createBuffer();
-			if ( object.hasUvs && ! buffers.uv ) buffers.uv = _gl.createBuffer();
-			if ( object.hasColors && ! buffers.color ) buffers.color = _gl.createBuffer();
-
-			var programAttributes = program.getAttributes();
-
-			if ( object.hasPositions ) {
-
-				_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.position );
-				_gl.bufferData( _gl.ARRAY_BUFFER, object.positionArray, _gl.DYNAMIC_DRAW );
-
-				state.enableAttribute( programAttributes.position );
-				_gl.vertexAttribPointer( programAttributes.position, 3, _gl.FLOAT, false, 0, 0 );
-
-			}
-
-			if ( object.hasNormals ) {
-
-				_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.normal );
-
-				if ( ! material.isMeshPhongMaterial &&
-					! material.isMeshStandardMaterial &&
-					! material.isMeshNormalMaterial &&
-					material.flatShading === true ) {
-
-					for ( var i = 0, l = object.count * 3; i < l; i += 9 ) {
-
-						var array = object.normalArray;
-
-						var nx = ( array[ i + 0 ] + array[ i + 3 ] + array[ i + 6 ] ) / 3;
-						var ny = ( array[ i + 1 ] + array[ i + 4 ] + array[ i + 7 ] ) / 3;
-						var nz = ( array[ i + 2 ] + array[ i + 5 ] + array[ i + 8 ] ) / 3;
-
-						array[ i + 0 ] = nx;
-						array[ i + 1 ] = ny;
-						array[ i + 2 ] = nz;
-
-						array[ i + 3 ] = nx;
-						array[ i + 4 ] = ny;
-						array[ i + 5 ] = nz;
-
-						array[ i + 6 ] = nx;
-						array[ i + 7 ] = ny;
-						array[ i + 8 ] = nz;
-
-					}
-
-				}
-
-				_gl.bufferData( _gl.ARRAY_BUFFER, object.normalArray, _gl.DYNAMIC_DRAW );
-
-				state.enableAttribute( programAttributes.normal );
-
-				_gl.vertexAttribPointer( programAttributes.normal, 3, _gl.FLOAT, false, 0, 0 );
-
-			}
-
-			if ( object.hasUvs && material.map ) {
-
-				_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.uv );
-				_gl.bufferData( _gl.ARRAY_BUFFER, object.uvArray, _gl.DYNAMIC_DRAW );
-
-				state.enableAttribute( programAttributes.uv );
-
-				_gl.vertexAttribPointer( programAttributes.uv, 2, _gl.FLOAT, false, 0, 0 );
-
-			}
-
-			if ( object.hasColors && material.vertexColors !== NoColors ) {
-
-				_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.color );
-				_gl.bufferData( _gl.ARRAY_BUFFER, object.colorArray, _gl.DYNAMIC_DRAW );
-
-				state.enableAttribute( programAttributes.color );
-
-				_gl.vertexAttribPointer( programAttributes.color, 3, _gl.FLOAT, false, 0, 0 );
-
-			}
-
-			state.disableUnusedAttributes();
-
-			_gl.drawArrays( _gl.TRIANGLES, 0, object.count );
-
-			object.count = 0;
-
-		};
-
-		this.renderBufferDirect = function ( camera, fog, geometry, material, object, group ) {
-
-			var frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );
-
-			state.setMaterial( material, frontFaceCW );
-
-			var program = setProgram( camera, fog, material, object );
-			var geometryProgram = geometry.id + '_' + program.id + '_' + ( material.wireframe === true );
-
-			var updateBuffers = false;
-
-			if ( geometryProgram !== _currentGeometryProgram ) {
-
-				_currentGeometryProgram = geometryProgram;
-				updateBuffers = true;
-
-			}
-
-			if ( object.morphTargetInfluences ) {
-
-				morphtargets.update( object, geometry, material, program );
-
-				updateBuffers = true;
-
-			}
-
-			//
-
-			var index = geometry.index;
-			var position = geometry.attributes.position;
-			var rangeFactor = 1;
-
-			if ( material.wireframe === true ) {
-
-				index = geometries.getWireframeAttribute( geometry );
-				rangeFactor = 2;
-
-			}
-
-			var attribute;
-			var renderer = bufferRenderer;
-
-			if ( index !== null ) {
-
-				attribute = attributes.get( index );
-
-				renderer = indexedBufferRenderer;
-				renderer.setIndex( attribute );
-
-			}
-
-			if ( updateBuffers ) {
-
-				setupVertexAttributes( material, program, geometry );
-
-				if ( index !== null ) {
-
-					_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, attribute.buffer );
-
-				}
-
-			}
-
-			//
-
-			var dataCount = Infinity;
-
-			if ( index !== null ) {
-
-				dataCount = index.count;
-
-			} else if ( position !== undefined ) {
-
-				dataCount = position.count;
-
-			}
-
-			var rangeStart = geometry.drawRange.start * rangeFactor;
-			var rangeCount = geometry.drawRange.count * rangeFactor;
-
-			var groupStart = group !== null ? group.start * rangeFactor : 0;
-			var groupCount = group !== null ? group.count * rangeFactor : Infinity;
-
-			var drawStart = Math.max( rangeStart, groupStart );
-			var drawEnd = Math.min( dataCount, rangeStart + rangeCount, groupStart + groupCount ) - 1;
-
-			var drawCount = Math.max( 0, drawEnd - drawStart + 1 );
-
-			if ( drawCount === 0 ) return;
-
-			//
-
-			if ( object.isMesh ) {
-
-				if ( material.wireframe === true ) {
-
-					state.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );
-					renderer.setMode( _gl.LINES );
-
-				} else {
-
-					switch ( object.drawMode ) {
-
-						case TrianglesDrawMode:
-							renderer.setMode( _gl.TRIANGLES );
-							break;
-
-						case TriangleStripDrawMode:
-							renderer.setMode( _gl.TRIANGLE_STRIP );
-							break;
-
-						case TriangleFanDrawMode:
-							renderer.setMode( _gl.TRIANGLE_FAN );
-							break;
-
-					}
-
-				}
-
-
-			} else if ( object.isLine ) {
-
-				var lineWidth = material.linewidth;
-
-				if ( lineWidth === undefined ) lineWidth = 1; // Not using Line*Material
-
-				state.setLineWidth( lineWidth * getTargetPixelRatio() );
-
-				if ( object.isLineSegments ) {
-
-					renderer.setMode( _gl.LINES );
-
-				} else if ( object.isLineLoop ) {
-
-					renderer.setMode( _gl.LINE_LOOP );
-
-				} else {
-
-					renderer.setMode( _gl.LINE_STRIP );
-
-				}
-
-			} else if ( object.isPoints ) {
-
-				renderer.setMode( _gl.POINTS );
-
-			}
-
-			if ( geometry && geometry.isInstancedBufferGeometry ) {
-
-				if ( geometry.maxInstancedCount > 0 ) {
-
-					renderer.renderInstances( geometry, drawStart, drawCount );
-
-				}
-
-			} else {
-
-				renderer.render( drawStart, drawCount );
-
-			}
-
-		};
-
-		function setupVertexAttributes( material, program, geometry, startIndex ) {
-
-			if ( geometry && geometry.isInstancedBufferGeometry ) {
-
-				if ( extensions.get( 'ANGLE_instanced_arrays' ) === null ) {
-
-					console.error( 'THREE.WebGLRenderer.setupVertexAttributes: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
-					return;
-
-				}
-
-			}
-
-			if ( startIndex === undefined ) startIndex = 0;
-
-			state.initAttributes();
-
-			var geometryAttributes = geometry.attributes;
-
-			var programAttributes = program.getAttributes();
-
-			var materialDefaultAttributeValues = material.defaultAttributeValues;
-
-			for ( var name in programAttributes ) {
-
-				var programAttribute = programAttributes[ name ];
-
-				if ( programAttribute >= 0 ) {
-
-					var geometryAttribute = geometryAttributes[ name ];
-
-					if ( geometryAttribute !== undefined ) {
-
-						var normalized = geometryAttribute.normalized;
-						var size = geometryAttribute.itemSize;
-
-						var attribute = attributes.get( geometryAttribute );
-
-						// TODO Attribute may not be available on context restore
-
-						if ( attribute === undefined ) continue;
-
-						var buffer = attribute.buffer;
-						var type = attribute.type;
-						var bytesPerElement = attribute.bytesPerElement;
-
-						if ( geometryAttribute.isInterleavedBufferAttribute ) {
-
-							var data = geometryAttribute.data;
-							var stride = data.stride;
-							var offset = geometryAttribute.offset;
-
-							if ( data && data.isInstancedInterleavedBuffer ) {
-
-								state.enableAttributeAndDivisor( programAttribute, data.meshPerAttribute );
-
-								if ( geometry.maxInstancedCount === undefined ) {
-
-									geometry.maxInstancedCount = data.meshPerAttribute * data.count;
-
-								}
-
-							} else {
-
-								state.enableAttribute( programAttribute );
-
-							}
-
-							_gl.bindBuffer( _gl.ARRAY_BUFFER, buffer );
-							_gl.vertexAttribPointer( programAttribute, size, type, normalized, stride * bytesPerElement, ( startIndex * stride + offset ) * bytesPerElement );
-
-						} else {
-
-							if ( geometryAttribute.isInstancedBufferAttribute ) {
-
-								state.enableAttributeAndDivisor( programAttribute, geometryAttribute.meshPerAttribute );
-
-								if ( geometry.maxInstancedCount === undefined ) {
-
-									geometry.maxInstancedCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;
-
-								}
-
-							} else {
-
-								state.enableAttribute( programAttribute );
-
-							}
-
-							_gl.bindBuffer( _gl.ARRAY_BUFFER, buffer );
-							_gl.vertexAttribPointer( programAttribute, size, type, normalized, 0, startIndex * size * bytesPerElement );
-
-						}
-
-					} else if ( materialDefaultAttributeValues !== undefined ) {
-
-						var value = materialDefaultAttributeValues[ name ];
-
-						if ( value !== undefined ) {
-
-							switch ( value.length ) {
-
-								case 2:
-									_gl.vertexAttrib2fv( programAttribute, value );
-									break;
-
-								case 3:
-									_gl.vertexAttrib3fv( programAttribute, value );
-									break;
-
-								case 4:
-									_gl.vertexAttrib4fv( programAttribute, value );
-									break;
-
-								default:
-									_gl.vertexAttrib1fv( programAttribute, value );
-
-							}
-
-						}
-
-					}
-
-				}
-
-			}
-
-			state.disableUnusedAttributes();
-
-		}
-
-		// Compile
-
-		this.compile = function ( scene, camera ) {
-
-			currentRenderState = renderStates.get( scene, camera );
-			currentRenderState.init();
-
-			scene.traverse( function ( object ) {
-
-				if ( object.isLight ) {
-
-					currentRenderState.pushLight( object );
-
-					if ( object.castShadow ) {
-
-						currentRenderState.pushShadow( object );
-
-					}
-
-				}
-
-			} );
-
-			currentRenderState.setupLights( camera );
-
-			scene.traverse( function ( object ) {
-
-				if ( object.material ) {
-
-					if ( Array.isArray( object.material ) ) {
-
-						for ( var i = 0; i < object.material.length; i ++ ) {
-
-							initMaterial( object.material[ i ], scene.fog, object );
-
-						}
-
-					} else {
-
-						initMaterial( object.material, scene.fog, object );
-
-					}
-
-				}
-
-			} );
-
-		};
-
-		// Animation Loop
-
-		var isAnimating = false;
-		var onAnimationFrame = null;
-
-		function startAnimation() {
-
-			if ( isAnimating ) return;
-
-			requestAnimationLoopFrame();
-
-			isAnimating = true;
-
-		}
-
-		function stopAnimation() {
-
-			isAnimating = false;
-
-		}
-
-		function requestAnimationLoopFrame() {
-
-			var device = vr.getDevice();
-
-			if ( device && device.isPresenting ) {
-
-				device.requestAnimationFrame( animationLoop );
-
-			} else {
-
-				window.requestAnimationFrame( animationLoop );
-
-			}
-
-		}
-
-		function animationLoop( time ) {
-
-			if ( isAnimating === false ) return;
-
-			onAnimationFrame( time );
-
-			requestAnimationLoopFrame();
-
-		}
-
-		this.animate = function ( callback ) {
-
-			onAnimationFrame = callback;
-			onAnimationFrame !== null ? startAnimation() : stopAnimation();
-
-		};
-
-		// Rendering
-
-		this.render = function ( scene, camera, renderTarget, forceClear ) {
-
-			if ( ! ( camera && camera.isCamera ) ) {
-
-				console.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );
-				return;
-
-			}
-
-			if ( _isContextLost ) return;
-
-			// reset caching for this frame
-
-			_currentGeometryProgram = '';
-			_currentMaterialId = - 1;
-			_currentCamera = null;
-
-			// update scene graph
-
-			if ( scene.autoUpdate === true ) scene.updateMatrixWorld();
-
-			// update camera matrices and frustum
-
-			if ( camera.parent === null ) camera.updateMatrixWorld();
-
-			if ( vr.enabled ) {
-
-				camera = vr.getCamera( camera );
-
-			}
-
-			//
-
-			currentRenderState = renderStates.get( scene, camera );
-			currentRenderState.init();
-
-			scene.onBeforeRender( _this, scene, camera, renderTarget );
-
-			_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
-			_frustum.setFromMatrix( _projScreenMatrix );
-
-			_localClippingEnabled = this.localClippingEnabled;
-			_clippingEnabled = _clipping.init( this.clippingPlanes, _localClippingEnabled, camera );
-
-			currentRenderList = renderLists.get( scene, camera );
-			currentRenderList.init();
-
-			projectObject( scene, camera, _this.sortObjects );
-
-			if ( _this.sortObjects === true ) {
-
-				currentRenderList.sort();
-
-			}
-
-			//
-
-			if ( _clippingEnabled ) _clipping.beginShadows();
-
-			var shadowsArray = currentRenderState.state.shadowsArray;
-
-			shadowMap.render( shadowsArray, scene, camera );
-
-			currentRenderState.setupLights( camera );
-
-			if ( _clippingEnabled ) _clipping.endShadows();
-
-			//
-
-			if ( this.info.autoReset ) this.info.reset();
-
-			if ( renderTarget === undefined ) {
-
-				renderTarget = null;
-
-			}
-
-			this.setRenderTarget( renderTarget );
-
-			//
-
-			background.render( currentRenderList, scene, camera, forceClear );
-
-			// render scene
-
-			var opaqueObjects = currentRenderList.opaque;
-			var transparentObjects = currentRenderList.transparent;
-
-			if ( scene.overrideMaterial ) {
-
-				var overrideMaterial = scene.overrideMaterial;
-
-				if ( opaqueObjects.length ) renderObjects( opaqueObjects, scene, camera, overrideMaterial );
-				if ( transparentObjects.length ) renderObjects( transparentObjects, scene, camera, overrideMaterial );
-
-			} else {
-
-				// opaque pass (front-to-back order)
-
-				if ( opaqueObjects.length ) renderObjects( opaqueObjects, scene, camera );
-
-				// transparent pass (back-to-front order)
-
-				if ( transparentObjects.length ) renderObjects( transparentObjects, scene, camera );
-
-			}
-
-			// custom renderers
-
-			var spritesArray = currentRenderState.state.spritesArray;
-
-			spriteRenderer.render( spritesArray, scene, camera );
-
-			// Generate mipmap if we're using any kind of mipmap filtering
-
-			if ( renderTarget ) {
-
-				textures.updateRenderTargetMipmap( renderTarget );
-
-			}
-
-			// Ensure depth buffer writing is enabled so it can be cleared on next render
-
-			state.buffers.depth.setTest( true );
-			state.buffers.depth.setMask( true );
-			state.buffers.color.setMask( true );
-
-			state.setPolygonOffset( false );
-
-			scene.onAfterRender( _this, scene, camera );
-
-			if ( vr.enabled ) {
-
-				vr.submitFrame();
-
-			}
-
-			// _gl.finish();
-
-			currentRenderList = null;
-			currentRenderState = null;
-
-		};
-
-		/*
-		// TODO Duplicated code (Frustum)
-
-		var _sphere = new Sphere();
-
-		function isObjectViewable( object ) {
-
-			var geometry = object.geometry;
-
-			if ( geometry.boundingSphere === null )
-				geometry.computeBoundingSphere();
-
-			_sphere.copy( geometry.boundingSphere ).
-			applyMatrix4( object.matrixWorld );
-
-			return isSphereViewable( _sphere );
-
-		}
-
-		function isSpriteViewable( sprite ) {
-
-			_sphere.center.set( 0, 0, 0 );
-			_sphere.radius = 0.7071067811865476;
-			_sphere.applyMatrix4( sprite.matrixWorld );
-
-			return isSphereViewable( _sphere );
-
-		}
-
-		function isSphereViewable( sphere ) {
-
-			if ( ! _frustum.intersectsSphere( sphere ) ) return false;
-
-			var numPlanes = _clipping.numPlanes;
-
-			if ( numPlanes === 0 ) return true;
-
-			var planes = _this.clippingPlanes,
-
-				center = sphere.center,
-				negRad = - sphere.radius,
-				i = 0;
-
-			do {
-
-				// out when deeper than radius in the negative halfspace
-				if ( planes[ i ].distanceToPoint( center ) < negRad ) return false;
-
-			} while ( ++ i !== numPlanes );
-
-			return true;
-
-		}
-		*/
-
-		function projectObject( object, camera, sortObjects ) {
-
-			if ( object.visible === false ) return;
-
-			var visible = object.layers.test( camera.layers );
-
-			if ( visible ) {
-
-				if ( object.isLight ) {
-
-					currentRenderState.pushLight( object );
-
-					if ( object.castShadow ) {
-
-						currentRenderState.pushShadow( object );
-
-					}
-
-				} else if ( object.isSprite ) {
-
-					if ( ! object.frustumCulled || _frustum.intersectsSprite( object ) ) {
-
-						currentRenderState.pushSprite( object );
-
-					}
-
-				} else if ( object.isImmediateRenderObject ) {
-
-					if ( sortObjects ) {
-
-						_vector3.setFromMatrixPosition( object.matrixWorld )
-							.applyMatrix4( _projScreenMatrix );
-
-					}
-
-					currentRenderList.push( object, null, object.material, _vector3.z, null );
-
-				} else if ( object.isMesh || object.isLine || object.isPoints ) {
-
-					if ( object.isSkinnedMesh ) {
-
-						object.skeleton.update();
-
-					}
-
-					if ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) {
-
-						if ( sortObjects ) {
-
-							_vector3.setFromMatrixPosition( object.matrixWorld )
-								.applyMatrix4( _projScreenMatrix );
-
-						}
-
-						var geometry = objects.update( object );
-						var material = object.material;
-
-						if ( Array.isArray( material ) ) {
-
-							var groups = geometry.groups;
-
-							for ( var i = 0, l = groups.length; i < l; i ++ ) {
-
-								var group = groups[ i ];
-								var groupMaterial = material[ group.materialIndex ];
-
-								if ( groupMaterial && groupMaterial.visible ) {
-
-									currentRenderList.push( object, geometry, groupMaterial, _vector3.z, group );
-
-								}
-
-							}
-
-						} else if ( material.visible ) {
-
-							currentRenderList.push( object, geometry, material, _vector3.z, null );
-
-						}
-
-					}
-
-				}
-
-			}
-
-			var children = object.children;
-
-			for ( var i = 0, l = children.length; i < l; i ++ ) {
-
-				projectObject( children[ i ], camera, sortObjects );
-
-			}
-
-		}
-
-		function renderObjects( renderList, scene, camera, overrideMaterial ) {
-
-			for ( var i = 0, l = renderList.length; i < l; i ++ ) {
-
-				var renderItem = renderList[ i ];
-
-				var object = renderItem.object;
-				var geometry = renderItem.geometry;
-				var material = overrideMaterial === undefined ? renderItem.material : overrideMaterial;
-				var group = renderItem.group;
-
-				if ( camera.isArrayCamera ) {
-
-					_currentArrayCamera = camera;
-
-					var cameras = camera.cameras;
-
-					for ( var j = 0, jl = cameras.length; j < jl; j ++ ) {
-
-						var camera2 = cameras[ j ];
-
-						if ( object.layers.test( camera2.layers ) ) {
-
-							var bounds = camera2.bounds;
-
-							var x = bounds.x * _width;
-							var y = bounds.y * _height;
-							var width = bounds.z * _width;
-							var height = bounds.w * _height;
-
-							state.viewport( _currentViewport.set( x, y, width, height ).multiplyScalar( _pixelRatio ) );
-
-							renderObject( object, scene, camera2, geometry, material, group );
-
-						}
-
-					}
-
-				} else {
-
-					_currentArrayCamera = null;
-
-					renderObject( object, scene, camera, geometry, material, group );
-
-				}
-
-			}
-
-		}
-
-		function renderObject( object, scene, camera, geometry, material, group ) {
-
-			object.onBeforeRender( _this, scene, camera, geometry, material, group );
-			currentRenderState = renderStates.get( scene, _currentArrayCamera || camera );
-
-			object.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );
-			object.normalMatrix.getNormalMatrix( object.modelViewMatrix );
-
-			if ( object.isImmediateRenderObject ) {
-
-				var frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );
-
-				state.setMaterial( material, frontFaceCW );
-
-				var program = setProgram( camera, scene.fog, material, object );
-
-				_currentGeometryProgram = '';
-
-				renderObjectImmediate( object, program, material );
-
-			} else {
-
-				_this.renderBufferDirect( camera, scene.fog, geometry, material, object, group );
-
-			}
-
-			object.onAfterRender( _this, scene, camera, geometry, material, group );
-			currentRenderState = renderStates.get( scene, _currentArrayCamera || camera );
-
-		}
-
-		function initMaterial( material, fog, object ) {
-
-			var materialProperties = properties.get( material );
-
-			var lights = currentRenderState.state.lights;
-			var shadowsArray = currentRenderState.state.shadowsArray;
-
-			var parameters = programCache.getParameters(
-				material, lights.state, shadowsArray, fog, _clipping.numPlanes, _clipping.numIntersection, object );
-
-			var code = programCache.getProgramCode( material, parameters );
-
-			var program = materialProperties.program;
-			var programChange = true;
-
-			if ( program === undefined ) {
-
-				// new material
-				material.addEventListener( 'dispose', onMaterialDispose );
-
-			} else if ( program.code !== code ) {
-
-				// changed glsl or parameters
-				releaseMaterialProgramReference( material );
-
-			} else if ( materialProperties.lightsHash !== lights.state.hash ) {
-
-				properties.update( material, 'lightsHash', lights.state.hash );
-				programChange = false;
-
-			} else if ( parameters.shaderID !== undefined ) {
-
-				// same glsl and uniform list
-				return;
-
-			} else {
-
-				// only rebuild uniform list
-				programChange = false;
-
-			}
-
-			if ( programChange ) {
-
-				if ( parameters.shaderID ) {
-
-					var shader = ShaderLib[ parameters.shaderID ];
-
-					materialProperties.shader = {
-						name: material.type,
-						uniforms: UniformsUtils.clone( shader.uniforms ),
-						vertexShader: shader.vertexShader,
-						fragmentShader: shader.fragmentShader
-					};
-
-				} else {
-
-					materialProperties.shader = {
-						name: material.type,
-						uniforms: material.uniforms,
-						vertexShader: material.vertexShader,
-						fragmentShader: material.fragmentShader
-					};
-
-				}
-
-				material.onBeforeCompile( materialProperties.shader, _this );
-
-				program = programCache.acquireProgram( material, materialProperties.shader, parameters, code );
-
-				materialProperties.program = program;
-				material.program = program;
-
-			}
-
-			var programAttributes = program.getAttributes();
-
-			if ( material.morphTargets ) {
-
-				material.numSupportedMorphTargets = 0;
-
-				for ( var i = 0; i < _this.maxMorphTargets; i ++ ) {
-
-					if ( programAttributes[ 'morphTarget' + i ] >= 0 ) {
-
-						material.numSupportedMorphTargets ++;
-
-					}
-
-				}
-
-			}
-
-			if ( material.morphNormals ) {
-
-				material.numSupportedMorphNormals = 0;
-
-				for ( var i = 0; i < _this.maxMorphNormals; i ++ ) {
-
-					if ( programAttributes[ 'morphNormal' + i ] >= 0 ) {
-
-						material.numSupportedMorphNormals ++;
-
-					}
-
-				}
-
-			}
-
-			var uniforms = materialProperties.shader.uniforms;
-
-			if ( ! material.isShaderMaterial &&
-				! material.isRawShaderMaterial ||
-				material.clipping === true ) {
-
-				materialProperties.numClippingPlanes = _clipping.numPlanes;
-				materialProperties.numIntersection = _clipping.numIntersection;
-				uniforms.clippingPlanes = _clipping.uniform;
-
-			}
-
-			materialProperties.fog = fog;
-
-			// store the light setup it was created for
-
-			materialProperties.lightsHash = lights.state.hash;
-
-			if ( material.lights ) {
-
-				// wire up the material to this renderer's lighting state
-
-				uniforms.ambientLightColor.value = lights.state.ambient;
-				uniforms.directionalLights.value = lights.state.directional;
-				uniforms.spotLights.value = lights.state.spot;
-				uniforms.rectAreaLights.value = lights.state.rectArea;
-				uniforms.pointLights.value = lights.state.point;
-				uniforms.hemisphereLights.value = lights.state.hemi;
-
-				uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
-				uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
-				uniforms.spotShadowMap.value = lights.state.spotShadowMap;
-				uniforms.spotShadowMatrix.value = lights.state.spotShadowMatrix;
-				uniforms.pointShadowMap.value = lights.state.pointShadowMap;
-				uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;
-				// TODO (abelnation): add area lights shadow info to uniforms
-
-			}
-
-			var progUniforms = materialProperties.program.getUniforms(),
-				uniformsList =
-					WebGLUniforms.seqWithValue( progUniforms.seq, uniforms );
-
-			materialProperties.uniformsList = uniformsList;
-
-		}
-
-		function setProgram( camera, fog, material, object ) {
-
-			_usedTextureUnits = 0;
-
-			var materialProperties = properties.get( material );
-			var lights = currentRenderState.state.lights;
-
-			if ( _clippingEnabled ) {
-
-				if ( _localClippingEnabled || camera !== _currentCamera ) {
-
-					var useCache =
-						camera === _currentCamera &&
-						material.id === _currentMaterialId;
-
-					// we might want to call this function with some ClippingGroup
-					// object instead of the material, once it becomes feasible
-					// (#8465, #8379)
-					_clipping.setState(
-						material.clippingPlanes, material.clipIntersection, material.clipShadows,
-						camera, materialProperties, useCache );
-
-				}
-
-			}
-
-			if ( material.needsUpdate === false ) {
-
-				if ( materialProperties.program === undefined ) {
-
-					material.needsUpdate = true;
-
-				} else if ( material.fog && materialProperties.fog !== fog ) {
-
-					material.needsUpdate = true;
-
-				} else if ( material.lights && materialProperties.lightsHash !== lights.state.hash ) {
-
-					material.needsUpdate = true;
-
-				} else if ( materialProperties.numClippingPlanes !== undefined &&
-					( materialProperties.numClippingPlanes !== _clipping.numPlanes ||
-					materialProperties.numIntersection !== _clipping.numIntersection ) ) {
-
-					material.needsUpdate = true;
-
-				}
-
-			}
-
-			if ( material.needsUpdate ) {
-
-				initMaterial( material, fog, object );
-				material.needsUpdate = false;
-
-			}
-
-			var refreshProgram = false;
-			var refreshMaterial = false;
-			var refreshLights = false;
-
-			var program = materialProperties.program,
-				p_uniforms = program.getUniforms(),
-				m_uniforms = materialProperties.shader.uniforms;
-
-			if ( state.useProgram( program.program ) ) {
-
-				refreshProgram = true;
-				refreshMaterial = true;
-				refreshLights = true;
-
-			}
-
-			if ( material.id !== _currentMaterialId ) {
-
-				_currentMaterialId = material.id;
-
-				refreshMaterial = true;
-
-			}
-
-			if ( refreshProgram || camera !== _currentCamera ) {
-
-				p_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );
-
-				if ( capabilities.logarithmicDepthBuffer ) {
-
-					p_uniforms.setValue( _gl, 'logDepthBufFC',
-						2.0 / ( Math.log( camera.far + 1.0 ) / Math.LN2 ) );
-
-				}
-
-				// Avoid unneeded uniform updates per ArrayCamera's sub-camera
-
-				if ( _currentCamera !== ( _currentArrayCamera || camera ) ) {
-
-					_currentCamera = ( _currentArrayCamera || camera );
-
-					// lighting uniforms depend on the camera so enforce an update
-					// now, in case this material supports lights - or later, when
-					// the next material that does gets activated:
-
-					refreshMaterial = true;		// set to true on material change
-					refreshLights = true;		// remains set until update done
-
-				}
-
-				// load material specific uniforms
-				// (shader material also gets them for the sake of genericity)
-
-				if ( material.isShaderMaterial ||
-					material.isMeshPhongMaterial ||
-					material.isMeshStandardMaterial ||
-					material.envMap ) {
-
-					var uCamPos = p_uniforms.map.cameraPosition;
-
-					if ( uCamPos !== undefined ) {
-
-						uCamPos.setValue( _gl,
-							_vector3.setFromMatrixPosition( camera.matrixWorld ) );
-
-					}
-
-				}
-
-				if ( material.isMeshPhongMaterial ||
-					material.isMeshLambertMaterial ||
-					material.isMeshBasicMaterial ||
-					material.isMeshStandardMaterial ||
-					material.isShaderMaterial ||
-					material.skinning ) {
-
-					p_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );
-
-				}
-
-			}
-
-			// skinning uniforms must be set even if material didn't change
-			// auto-setting of texture unit for bone texture must go before other textures
-			// not sure why, but otherwise weird things happen
-
-			if ( material.skinning ) {
-
-				p_uniforms.setOptional( _gl, object, 'bindMatrix' );
-				p_uniforms.setOptional( _gl, object, 'bindMatrixInverse' );
-
-				var skeleton = object.skeleton;
-
-				if ( skeleton ) {
-
-					var bones = skeleton.bones;
-
-					if ( capabilities.floatVertexTextures ) {
-
-						if ( skeleton.boneTexture === undefined ) {
-
-							// layout (1 matrix = 4 pixels)
-							//      RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
-							//  with  8x8  pixel texture max   16 bones * 4 pixels =  (8 * 8)
-							//       16x16 pixel texture max   64 bones * 4 pixels = (16 * 16)
-							//       32x32 pixel texture max  256 bones * 4 pixels = (32 * 32)
-							//       64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)
-
-
-							var size = Math.sqrt( bones.length * 4 ); // 4 pixels needed for 1 matrix
-							size = _Math.ceilPowerOfTwo( size );
-							size = Math.max( size, 4 );
-
-							var boneMatrices = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel
-							boneMatrices.set( skeleton.boneMatrices ); // copy current values
-
-							var boneTexture = new DataTexture( boneMatrices, size, size, RGBAFormat, FloatType );
-							boneTexture.needsUpdate = true;
-
-							skeleton.boneMatrices = boneMatrices;
-							skeleton.boneTexture = boneTexture;
-							skeleton.boneTextureSize = size;
-
-						}
-
-						p_uniforms.setValue( _gl, 'boneTexture', skeleton.boneTexture );
-						p_uniforms.setValue( _gl, 'boneTextureSize', skeleton.boneTextureSize );
-
-					} else {
-
-						p_uniforms.setOptional( _gl, skeleton, 'boneMatrices' );
-
-					}
-
-				}
-
-			}
-
-			if ( refreshMaterial ) {
-
-				p_uniforms.setValue( _gl, 'toneMappingExposure', _this.toneMappingExposure );
-				p_uniforms.setValue( _gl, 'toneMappingWhitePoint', _this.toneMappingWhitePoint );
-
-				if ( material.lights ) {
-
-					// the current material requires lighting info
-
-					// note: all lighting uniforms are always set correctly
-					// they simply reference the renderer's state for their
-					// values
-					//
-					// use the current material's .needsUpdate flags to set
-					// the GL state when required
-
-					markUniformsLightsNeedsUpdate( m_uniforms, refreshLights );
-
-				}
-
-				// refresh uniforms common to several materials
-
-				if ( fog && material.fog ) {
-
-					refreshUniformsFog( m_uniforms, fog );
-
-				}
-
-				if ( material.isMeshBasicMaterial ) {
-
-					refreshUniformsCommon( m_uniforms, material );
-
-				} else if ( material.isMeshLambertMaterial ) {
-
-					refreshUniformsCommon( m_uniforms, material );
-					refreshUniformsLambert( m_uniforms, material );
-
-				} else if ( material.isMeshPhongMaterial ) {
-
-					refreshUniformsCommon( m_uniforms, material );
-
-					if ( material.isMeshToonMaterial ) {
-
-						refreshUniformsToon( m_uniforms, material );
-
-					} else {
-
-						refreshUniformsPhong( m_uniforms, material );
-
-					}
-
-				} else if ( material.isMeshStandardMaterial ) {
-
-					refreshUniformsCommon( m_uniforms, material );
-
-					if ( material.isMeshPhysicalMaterial ) {
-
-						refreshUniformsPhysical( m_uniforms, material );
-
-					} else {
-
-						refreshUniformsStandard( m_uniforms, material );
-
-					}
-
-				} else if ( material.isMeshDepthMaterial ) {
-
-					refreshUniformsCommon( m_uniforms, material );
-					refreshUniformsDepth( m_uniforms, material );
-
-				} else if ( material.isMeshDistanceMaterial ) {
-
-					refreshUniformsCommon( m_uniforms, material );
-					refreshUniformsDistance( m_uniforms, material );
-
-				} else if ( material.isMeshNormalMaterial ) {
-
-					refreshUniformsCommon( m_uniforms, material );
-					refreshUniformsNormal( m_uniforms, material );
-
-				} else if ( material.isLineBasicMaterial ) {
-
-					refreshUniformsLine( m_uniforms, material );
-
-					if ( material.isLineDashedMaterial ) {
-
-						refreshUniformsDash( m_uniforms, material );
-
-					}
-
-				} else if ( material.isPointsMaterial ) {
-
-					refreshUniformsPoints( m_uniforms, material );
-
-				} else if ( material.isShadowMaterial ) {
-
-					m_uniforms.color.value = material.color;
-					m_uniforms.opacity.value = material.opacity;
-
-				}
-
-				// RectAreaLight Texture
-				// TODO (mrdoob): Find a nicer implementation
-
-				if ( m_uniforms.ltc_1 !== undefined ) m_uniforms.ltc_1.value = UniformsLib.LTC_1;
-				if ( m_uniforms.ltc_2 !== undefined ) m_uniforms.ltc_2.value = UniformsLib.LTC_2;
-
-				WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, _this );
-
-			}
-
-			if ( material.isShaderMaterial && material.uniformsNeedUpdate === true ) {
-
-				WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, _this );
-				material.uniformsNeedUpdate = false;
-
-			}
-
-			// common matrices
-
-			p_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );
-			p_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );
-			p_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );
-
-			return program;
-
-		}
-
-		// Uniforms (refresh uniforms objects)
-
-		function refreshUniformsCommon( uniforms, material ) {
-
-			uniforms.opacity.value = material.opacity;
-
-			if ( material.color ) {
-
-				uniforms.diffuse.value = material.color;
-
-			}
-
-			if ( material.emissive ) {
-
-				uniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );
-
-			}
-
-			if ( material.map ) {
-
-				uniforms.map.value = material.map;
-
-			}
-
-			if ( material.alphaMap ) {
-
-				uniforms.alphaMap.value = material.alphaMap;
-
-			}
-
-			if ( material.specularMap ) {
-
-				uniforms.specularMap.value = material.specularMap;
-
-			}
-
-			if ( material.envMap ) {
-
-				uniforms.envMap.value = material.envMap;
-
-				// don't flip CubeTexture envMaps, flip everything else:
-				//  WebGLRenderTargetCube will be flipped for backwards compatibility
-				//  WebGLRenderTargetCube.texture will be flipped because it's a Texture and NOT a CubeTexture
-				// this check must be handled differently, or removed entirely, if WebGLRenderTargetCube uses a CubeTexture in the future
-				uniforms.flipEnvMap.value = ( ! ( material.envMap && material.envMap.isCubeTexture ) ) ? 1 : - 1;
-
-				uniforms.reflectivity.value = material.reflectivity;
-				uniforms.refractionRatio.value = material.refractionRatio;
-
-				uniforms.maxMipLevel.value = properties.get( material.envMap ).__maxMipLevel;
-
-			}
-
-			if ( material.lightMap ) {
-
-				uniforms.lightMap.value = material.lightMap;
-				uniforms.lightMapIntensity.value = material.lightMapIntensity;
-
-			}
-
-			if ( material.aoMap ) {
-
-				uniforms.aoMap.value = material.aoMap;
-				uniforms.aoMapIntensity.value = material.aoMapIntensity;
-
-			}
-
-			// uv repeat and offset setting priorities
-			// 1. color map
-			// 2. specular map
-			// 3. normal map
-			// 4. bump map
-			// 5. alpha map
-			// 6. emissive map
-
-			var uvScaleMap;
-
-			if ( material.map ) {
-
-				uvScaleMap = material.map;
-
-			} else if ( material.specularMap ) {
-
-				uvScaleMap = material.specularMap;
-
-			} else if ( material.displacementMap ) {
-
-				uvScaleMap = material.displacementMap;
-
-			} else if ( material.normalMap ) {
-
-				uvScaleMap = material.normalMap;
-
-			} else if ( material.bumpMap ) {
-
-				uvScaleMap = material.bumpMap;
-
-			} else if ( material.roughnessMap ) {
-
-				uvScaleMap = material.roughnessMap;
-
-			} else if ( material.metalnessMap ) {
-
-				uvScaleMap = material.metalnessMap;
-
-			} else if ( material.alphaMap ) {
-
-				uvScaleMap = material.alphaMap;
-
-			} else if ( material.emissiveMap ) {
-
-				uvScaleMap = material.emissiveMap;
-
-			}
-
-			if ( uvScaleMap !== undefined ) {
-
-				// backwards compatibility
-				if ( uvScaleMap.isWebGLRenderTarget ) {
-
-					uvScaleMap = uvScaleMap.texture;
-
-				}
-
-				if ( uvScaleMap.matrixAutoUpdate === true ) {
-
-					var offset = uvScaleMap.offset;
-					var repeat = uvScaleMap.repeat;
-					var rotation = uvScaleMap.rotation;
-					var center = uvScaleMap.center;
-
-					uvScaleMap.matrix.setUvTransform( offset.x, offset.y, repeat.x, repeat.y, rotation, center.x, center.y );
-
-				}
-
-				uniforms.uvTransform.value.copy( uvScaleMap.matrix );
-
-			}
-
-		}
-
-		function refreshUniformsLine( uniforms, material ) {
-
-			uniforms.diffuse.value = material.color;
-			uniforms.opacity.value = material.opacity;
-
-		}
-
-		function refreshUniformsDash( uniforms, material ) {
-
-			uniforms.dashSize.value = material.dashSize;
-			uniforms.totalSize.value = material.dashSize + material.gapSize;
-			uniforms.scale.value = material.scale;
-
-		}
-
-		function refreshUniformsPoints( uniforms, material ) {
-
-			uniforms.diffuse.value = material.color;
-			uniforms.opacity.value = material.opacity;
-			uniforms.size.value = material.size * _pixelRatio;
-			uniforms.scale.value = _height * 0.5;
-
-			uniforms.map.value = material.map;
-
-			if ( material.map !== null ) {
-
-				if ( material.map.matrixAutoUpdate === true ) {
-
-					var offset = material.map.offset;
-					var repeat = material.map.repeat;
-					var rotation = material.map.rotation;
-					var center = material.map.center;
-
-					material.map.matrix.setUvTransform( offset.x, offset.y, repeat.x, repeat.y, rotation, center.x, center.y );
-
-				}
-
-				uniforms.uvTransform.value.copy( material.map.matrix );
-
-			}
-
-		}
-
-		function refreshUniformsFog( uniforms, fog ) {
-
-			uniforms.fogColor.value = fog.color;
-
-			if ( fog.isFog ) {
-
-				uniforms.fogNear.value = fog.near;
-				uniforms.fogFar.value = fog.far;
-
-			} else if ( fog.isFogExp2 ) {
-
-				uniforms.fogDensity.value = fog.density;
-
-			}
-
-		}
-
-		function refreshUniformsLambert( uniforms, material ) {
-
-			if ( material.emissiveMap ) {
-
-				uniforms.emissiveMap.value = material.emissiveMap;
-
-			}
-
-		}
-
-		function refreshUniformsPhong( uniforms, material ) {
-
-			uniforms.specular.value = material.specular;
-			uniforms.shininess.value = Math.max( material.shininess, 1e-4 ); // to prevent pow( 0.0, 0.0 )
-
-			if ( material.emissiveMap ) {
-
-				uniforms.emissiveMap.value = material.emissiveMap;
-
-			}
-
-			if ( material.bumpMap ) {
-
-				uniforms.bumpMap.value = material.bumpMap;
-				uniforms.bumpScale.value = material.bumpScale;
-
-			}
-
-			if ( material.normalMap ) {
-
-				uniforms.normalMap.value = material.normalMap;
-				uniforms.normalScale.value.copy( material.normalScale );
-
-			}
-
-			if ( material.displacementMap ) {
-
-				uniforms.displacementMap.value = material.displacementMap;
-				uniforms.displacementScale.value = material.displacementScale;
-				uniforms.displacementBias.value = material.displacementBias;
-
-			}
-
-		}
-
-		function refreshUniformsToon( uniforms, material ) {
-
-			refreshUniformsPhong( uniforms, material );
-
-			if ( material.gradientMap ) {
-
-				uniforms.gradientMap.value = material.gradientMap;
-
-			}
-
-		}
-
-		function refreshUniformsStandard( uniforms, material ) {
-
-			uniforms.roughness.value = material.roughness;
-			uniforms.metalness.value = material.metalness;
-
-			if ( material.roughnessMap ) {
-
-				uniforms.roughnessMap.value = material.roughnessMap;
-
-			}
-
-			if ( material.metalnessMap ) {
-
-				uniforms.metalnessMap.value = material.metalnessMap;
-
-			}
-
-			if ( material.emissiveMap ) {
-
-				uniforms.emissiveMap.value = material.emissiveMap;
-
-			}
-
-			if ( material.bumpMap ) {
-
-				uniforms.bumpMap.value = material.bumpMap;
-				uniforms.bumpScale.value = material.bumpScale;
-
-			}
-
-			if ( material.normalMap ) {
-
-				uniforms.normalMap.value = material.normalMap;
-				uniforms.normalScale.value.copy( material.normalScale );
-
-			}
-
-			if ( material.displacementMap ) {
-
-				uniforms.displacementMap.value = material.displacementMap;
-				uniforms.displacementScale.value = material.displacementScale;
-				uniforms.displacementBias.value = material.displacementBias;
-
-			}
-
-			if ( material.envMap ) {
-
-				//uniforms.envMap.value = material.envMap; // part of uniforms common
-				uniforms.envMapIntensity.value = material.envMapIntensity;
-
-			}
-
-		}
-
-		function refreshUniformsPhysical( uniforms, material ) {
-
-			uniforms.clearCoat.value = material.clearCoat;
-			uniforms.clearCoatRoughness.value = material.clearCoatRoughness;
-
-			refreshUniformsStandard( uniforms, material );
-
-		}
-
-		function refreshUniformsDepth( uniforms, material ) {
-
-			if ( material.displacementMap ) {
-
-				uniforms.displacementMap.value = material.displacementMap;
-				uniforms.displacementScale.value = material.displacementScale;
-				uniforms.displacementBias.value = material.displacementBias;
-
-			}
-
-		}
-
-		function refreshUniformsDistance( uniforms, material ) {
-
-			if ( material.displacementMap ) {
-
-				uniforms.displacementMap.value = material.displacementMap;
-				uniforms.displacementScale.value = material.displacementScale;
-				uniforms.displacementBias.value = material.displacementBias;
-
-			}
-
-			uniforms.referencePosition.value.copy( material.referencePosition );
-			uniforms.nearDistance.value = material.nearDistance;
-			uniforms.farDistance.value = material.farDistance;
-
-		}
-
-		function refreshUniformsNormal( uniforms, material ) {
-
-			if ( material.bumpMap ) {
-
-				uniforms.bumpMap.value = material.bumpMap;
-				uniforms.bumpScale.value = material.bumpScale;
-
-			}
-
-			if ( material.normalMap ) {
-
-				uniforms.normalMap.value = material.normalMap;
-				uniforms.normalScale.value.copy( material.normalScale );
-
-			}
-
-			if ( material.displacementMap ) {
-
-				uniforms.displacementMap.value = material.displacementMap;
-				uniforms.displacementScale.value = material.displacementScale;
-				uniforms.displacementBias.value = material.displacementBias;
-
-			}
-
-		}
-
-		// If uniforms are marked as clean, they don't need to be loaded to the GPU.
-
-		function markUniformsLightsNeedsUpdate( uniforms, value ) {
-
-			uniforms.ambientLightColor.needsUpdate = value;
-
-			uniforms.directionalLights.needsUpdate = value;
-			uniforms.pointLights.needsUpdate = value;
-			uniforms.spotLights.needsUpdate = value;
-			uniforms.rectAreaLights.needsUpdate = value;
-			uniforms.hemisphereLights.needsUpdate = value;
-
-		}
-
-		// Textures
-
-		function allocTextureUnit() {
-
-			var textureUnit = _usedTextureUnits;
-
-			if ( textureUnit >= capabilities.maxTextures ) {
-
-				console.warn( 'THREE.WebGLRenderer: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + capabilities.maxTextures );
-
-			}
-
-			_usedTextureUnits += 1;
-
-			return textureUnit;
-
-		}
-
-		this.allocTextureUnit = allocTextureUnit;
-
-		// this.setTexture2D = setTexture2D;
-		this.setTexture2D = ( function () {
-
-			var warned = false;
-
-			// backwards compatibility: peel texture.texture
-			return function setTexture2D( texture, slot ) {
-
-				if ( texture && texture.isWebGLRenderTarget ) {
-
-					if ( ! warned ) {
-
-						console.warn( "THREE.WebGLRenderer.setTexture2D: don't use render targets as textures. Use their .texture property instead." );
-						warned = true;
-
-					}
-
-					texture = texture.texture;
-
-				}
-
-				textures.setTexture2D( texture, slot );
-
-			};
-
-		}() );
-
-		this.setTexture = ( function () {
-
-			var warned = false;
-
-			return function setTexture( texture, slot ) {
-
-				if ( ! warned ) {
-
-					console.warn( "THREE.WebGLRenderer: .setTexture is deprecated, use setTexture2D instead." );
-					warned = true;
-
-				}
-
-				textures.setTexture2D( texture, slot );
-
-			};
-
-		}() );
-
-		this.setTextureCube = ( function () {
-
-			var warned = false;
-
-			return function setTextureCube( texture, slot ) {
-
-				// backwards compatibility: peel texture.texture
-				if ( texture && texture.isWebGLRenderTargetCube ) {
-
-					if ( ! warned ) {
-
-						console.warn( "THREE.WebGLRenderer.setTextureCube: don't use cube render targets as textures. Use their .texture property instead." );
-						warned = true;
-
-					}
-
-					texture = texture.texture;
-
-				}
-
-				// currently relying on the fact that WebGLRenderTargetCube.texture is a Texture and NOT a CubeTexture
-				// TODO: unify these code paths
-				if ( ( texture && texture.isCubeTexture ) ||
-					( Array.isArray( texture.image ) && texture.image.length === 6 ) ) {
-
-					// CompressedTexture can have Array in image :/
-
-					// this function alone should take care of cube textures
-					textures.setTextureCube( texture, slot );
-
-				} else {
-
-					// assumed: texture property of THREE.WebGLRenderTargetCube
-
-					textures.setTextureCubeDynamic( texture, slot );
-
-				}
-
-			};
-
-		}() );
-
-		this.getRenderTarget = function () {
-
-			return _currentRenderTarget;
-
-		};
-
-		this.setRenderTarget = function ( renderTarget ) {
-
-			_currentRenderTarget = renderTarget;
-
-			if ( renderTarget && properties.get( renderTarget ).__webglFramebuffer === undefined ) {
-
-				textures.setupRenderTarget( renderTarget );
-
-			}
-
-			var framebuffer = null;
-			var isCube = false;
-
-			if ( renderTarget ) {
-
-				var __webglFramebuffer = properties.get( renderTarget ).__webglFramebuffer;
-
-				if ( renderTarget.isWebGLRenderTargetCube ) {
-
-					framebuffer = __webglFramebuffer[ renderTarget.activeCubeFace ];
-					isCube = true;
-
-				} else {
-
-					framebuffer = __webglFramebuffer;
-
-				}
-
-				_currentViewport.copy( renderTarget.viewport );
-				_currentScissor.copy( renderTarget.scissor );
-				_currentScissorTest = renderTarget.scissorTest;
-
-			} else {
-
-				_currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio );
-				_currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio );
-				_currentScissorTest = _scissorTest;
-
-			}
-
-			if ( _currentFramebuffer !== framebuffer ) {
-
-				_gl.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
-				_currentFramebuffer = framebuffer;
-
-			}
-
-			state.viewport( _currentViewport );
-			state.scissor( _currentScissor );
-			state.setScissorTest( _currentScissorTest );
-
-			if ( isCube ) {
-
-				var textureProperties = properties.get( renderTarget.texture );
-				_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + renderTarget.activeCubeFace, textureProperties.__webglTexture, renderTarget.activeMipMapLevel );
-
-			}
-
-		};
-
-		this.readRenderTargetPixels = function ( renderTarget, x, y, width, height, buffer ) {
-
-			if ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {
-
-				console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );
-				return;
-
-			}
-
-			var framebuffer = properties.get( renderTarget ).__webglFramebuffer;
-
-			if ( framebuffer ) {
-
-				var restore = false;
-
-				if ( framebuffer !== _currentFramebuffer ) {
-
-					_gl.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
-
-					restore = true;
-
-				}
-
-				try {
-
-					var texture = renderTarget.texture;
-					var textureFormat = texture.format;
-					var textureType = texture.type;
-
-					if ( textureFormat !== RGBAFormat && utils.convert( textureFormat ) !== _gl.getParameter( _gl.IMPLEMENTATION_COLOR_READ_FORMAT ) ) {
-
-						console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );
-						return;
-
-					}
-
-					if ( textureType !== UnsignedByteType && utils.convert( textureType ) !== _gl.getParameter( _gl.IMPLEMENTATION_COLOR_READ_TYPE ) && // IE11, Edge and Chrome Mac < 52 (#9513)
-						! ( textureType === FloatType && ( extensions.get( 'OES_texture_float' ) || extensions.get( 'WEBGL_color_buffer_float' ) ) ) && // Chrome Mac >= 52 and Firefox
-						! ( textureType === HalfFloatType && extensions.get( 'EXT_color_buffer_half_float' ) ) ) {
-
-						console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );
-						return;
-
-					}
-
-					if ( _gl.checkFramebufferStatus( _gl.FRAMEBUFFER ) === _gl.FRAMEBUFFER_COMPLETE ) {
-
-						// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)
-
-						if ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {
-
-							_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), buffer );
-
-						}
-
-					} else {
-
-						console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: readPixels from renderTarget failed. Framebuffer not complete.' );
-
-					}
-
-				} finally {
-
-					if ( restore ) {
-
-						_gl.bindFramebuffer( _gl.FRAMEBUFFER, _currentFramebuffer );
-
-					}
-
-				}
-
-			}
-
-		};
-
-		this.copyFramebufferToTexture = function ( position, texture, level ) {
-
-			var width = texture.image.width;
-			var height = texture.image.height;
-			var glFormat = utils.convert( texture.format );
-
-			this.setTexture2D( texture, 0 );
-
-			_gl.copyTexImage2D( _gl.TEXTURE_2D, level || 0, glFormat, position.x, position.y, width, height, 0 );
-
-		};
-
-		this.copyTextureToTexture = function ( position, srcTexture, dstTexture, level ) {
-
-			var width = srcTexture.image.width;
-			var height = srcTexture.image.height;
-			var glFormat = utils.convert( dstTexture.format );
-			var glType = utils.convert( dstTexture.type );
-			var pixels = srcTexture.isDataTexture ? srcTexture.image.data : srcTexture.image;
-
-			this.setTexture2D( dstTexture, 0 );
-
-			_gl.texSubImage2D( _gl.TEXTURE_2D, level || 0, position.x, position.y, width, height, glFormat, glType, pixels );
-
-		};
-
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function FogExp2( color, density ) {
-
-		this.name = '';
-
-		this.color = new Color( color );
-		this.density = ( density !== undefined ) ? density : 0.00025;
-
-	}
-
-	FogExp2.prototype.isFogExp2 = true;
-
-	FogExp2.prototype.clone = function () {
-
-		return new FogExp2( this.color.getHex(), this.density );
-
-	};
-
-	FogExp2.prototype.toJSON = function ( /* meta */ ) {
-
-		return {
-			type: 'FogExp2',
-			color: this.color.getHex(),
-			density: this.density
-		};
-
-	};
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function Fog( color, near, far ) {
-
-		this.name = '';
-
-		this.color = new Color( color );
-
-		this.near = ( near !== undefined ) ? near : 1;
-		this.far = ( far !== undefined ) ? far : 1000;
-
-	}
-
-	Fog.prototype.isFog = true;
-
-	Fog.prototype.clone = function () {
-
-		return new Fog( this.color.getHex(), this.near, this.far );
-
-	};
-
-	Fog.prototype.toJSON = function ( /* meta */ ) {
-
-		return {
-			type: 'Fog',
-			color: this.color.getHex(),
-			near: this.near,
-			far: this.far
-		};
-
-	};
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function Scene() {
-
-		Object3D.call( this );
-
-		this.type = 'Scene';
-
-		this.background = null;
-		this.fog = null;
-		this.overrideMaterial = null;
-
-		this.autoUpdate = true; // checked by the renderer
-
-	}
-
-	Scene.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: Scene,
-
-		copy: function ( source, recursive ) {
-
-			Object3D.prototype.copy.call( this, source, recursive );
-
-			if ( source.background !== null ) this.background = source.background.clone();
-			if ( source.fog !== null ) this.fog = source.fog.clone();
-			if ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();
-
-			this.autoUpdate = source.autoUpdate;
-			this.matrixAutoUpdate = source.matrixAutoUpdate;
-
-			return this;
-
-		},
-
-		toJSON: function ( meta ) {
-
-			var data = Object3D.prototype.toJSON.call( this, meta );
-
-			if ( this.background !== null ) data.object.background = this.background.toJSON( meta );
-			if ( this.fog !== null ) data.object.fog = this.fog.toJSON();
-
-			return data;
-
-		}
-
-	} );
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 *
-	 * parameters = {
-	 *  color: <hex>,
-	 *  opacity: <float>,
-	 *  map: new THREE.Texture( <Image> ),
-	 *
-	 *	uvOffset: new THREE.Vector2(),
-	 *	uvScale: new THREE.Vector2()
-	 * }
-	 */
-
-	function SpriteMaterial( parameters ) {
-
-		Material.call( this );
-
-		this.type = 'SpriteMaterial';
-
-		this.color = new Color( 0xffffff );
-		this.map = null;
-
-		this.rotation = 0;
-
-		this.fog = false;
-		this.lights = false;
-
-		this.setValues( parameters );
-
-	}
-
-	SpriteMaterial.prototype = Object.create( Material.prototype );
-	SpriteMaterial.prototype.constructor = SpriteMaterial;
-	SpriteMaterial.prototype.isSpriteMaterial = true;
-
-	SpriteMaterial.prototype.copy = function ( source ) {
-
-		Material.prototype.copy.call( this, source );
-
-		this.color.copy( source.color );
-		this.map = source.map;
-
-		this.rotation = source.rotation;
-
-		return this;
-
-	};
-
-	/**
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function Sprite( material ) {
-
-		Object3D.call( this );
-
-		this.type = 'Sprite';
-
-		this.material = ( material !== undefined ) ? material : new SpriteMaterial();
-
-		this.center = new Vector2( 0.5, 0.5 );
-
-	}
-
-	Sprite.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: Sprite,
-
-		isSprite: true,
-
-		raycast: ( function () {
-
-			var intersectPoint = new Vector3();
-			var worldPosition = new Vector3();
-			var worldScale = new Vector3();
-
-			return function raycast( raycaster, intersects ) {
-
-				worldPosition.setFromMatrixPosition( this.matrixWorld );
-				raycaster.ray.closestPointToPoint( worldPosition, intersectPoint );
-
-				worldScale.setFromMatrixScale( this.matrixWorld );
-				var guessSizeSq = worldScale.x * worldScale.y / 4;
-
-				if ( worldPosition.distanceToSquared( intersectPoint ) > guessSizeSq ) return;
-
-				var distance = raycaster.ray.origin.distanceTo( intersectPoint );
-
-				if ( distance < raycaster.near || distance > raycaster.far ) return;
-
-				intersects.push( {
-
-					distance: distance,
-					point: intersectPoint.clone(),
-					face: null,
-					object: this
-
-				} );
-
-			};
-
-		}() ),
-
-		clone: function () {
-
-			return new this.constructor( this.material ).copy( this );
-
-		},
-
-		copy: function ( source ) {
-
-			Object3D.prototype.copy.call( this, source );
-
-			if ( source.center !== undefined ) this.center.copy( source.center );
-
-			return this;
-
-		}
-
-
-	} );
-
-	/**
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function LOD() {
-
-		Object3D.call( this );
-
-		this.type = 'LOD';
-
-		Object.defineProperties( this, {
-			levels: {
-				enumerable: true,
-				value: []
-			}
-		} );
-
-	}
-
-	LOD.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: LOD,
-
-		copy: function ( source ) {
-
-			Object3D.prototype.copy.call( this, source, false );
-
-			var levels = source.levels;
-
-			for ( var i = 0, l = levels.length; i < l; i ++ ) {
-
-				var level = levels[ i ];
-
-				this.addLevel( level.object.clone(), level.distance );
-
-			}
-
-			return this;
-
-		},
-
-		addLevel: function ( object, distance ) {
-
-			if ( distance === undefined ) distance = 0;
-
-			distance = Math.abs( distance );
-
-			var levels = this.levels;
-
-			for ( var l = 0; l < levels.length; l ++ ) {
-
-				if ( distance < levels[ l ].distance ) {
-
-					break;
-
-				}
-
-			}
-
-			levels.splice( l, 0, { distance: distance, object: object } );
-
-			this.add( object );
-
-		},
-
-		getObjectForDistance: function ( distance ) {
-
-			var levels = this.levels;
-
-			for ( var i = 1, l = levels.length; i < l; i ++ ) {
-
-				if ( distance < levels[ i ].distance ) {
-
-					break;
-
-				}
-
-			}
-
-			return levels[ i - 1 ].object;
-
-		},
-
-		raycast: ( function () {
-
-			var matrixPosition = new Vector3();
-
-			return function raycast( raycaster, intersects ) {
-
-				matrixPosition.setFromMatrixPosition( this.matrixWorld );
-
-				var distance = raycaster.ray.origin.distanceTo( matrixPosition );
-
-				this.getObjectForDistance( distance ).raycast( raycaster, intersects );
-
-			};
-
-		}() ),
-
-		update: function () {
-
-			var v1 = new Vector3();
-			var v2 = new Vector3();
-
-			return function update( camera ) {
-
-				var levels = this.levels;
-
-				if ( levels.length > 1 ) {
-
-					v1.setFromMatrixPosition( camera.matrixWorld );
-					v2.setFromMatrixPosition( this.matrixWorld );
-
-					var distance = v1.distanceTo( v2 );
-
-					levels[ 0 ].object.visible = true;
-
-					for ( var i = 1, l = levels.length; i < l; i ++ ) {
-
-						if ( distance >= levels[ i ].distance ) {
-
-							levels[ i - 1 ].object.visible = false;
-							levels[ i ].object.visible = true;
-
-						} else {
-
-							break;
-
-						}
-
-					}
-
-					for ( ; i < l; i ++ ) {
-
-						levels[ i ].object.visible = false;
-
-					}
-
-				}
-
-			};
-
-		}(),
-
-		toJSON: function ( meta ) {
-
-			var data = Object3D.prototype.toJSON.call( this, meta );
-
-			data.object.levels = [];
-
-			var levels = this.levels;
-
-			for ( var i = 0, l = levels.length; i < l; i ++ ) {
-
-				var level = levels[ i ];
-
-				data.object.levels.push( {
-					object: level.object.uuid,
-					distance: level.distance
-				} );
-
-			}
-
-			return data;
-
-		}
-
-	} );
-
-	/**
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author michael guerrero / http://realitymeltdown.com
-	 * @author ikerr / http://verold.com
-	 */
-
-	function Skeleton( bones, boneInverses ) {
-
-		// copy the bone array
-
-		bones = bones || [];
-
-		this.bones = bones.slice( 0 );
-		this.boneMatrices = new Float32Array( this.bones.length * 16 );
-
-		// use the supplied bone inverses or calculate the inverses
-
-		if ( boneInverses === undefined ) {
-
-			this.calculateInverses();
-
-		} else {
-
-			if ( this.bones.length === boneInverses.length ) {
-
-				this.boneInverses = boneInverses.slice( 0 );
-
-			} else {
-
-				console.warn( 'THREE.Skeleton boneInverses is the wrong length.' );
-
-				this.boneInverses = [];
-
-				for ( var i = 0, il = this.bones.length; i < il; i ++ ) {
-
-					this.boneInverses.push( new Matrix4() );
-
-				}
-
-			}
-
-		}
-
-	}
-
-	Object.assign( Skeleton.prototype, {
-
-		calculateInverses: function () {
-
-			this.boneInverses = [];
-
-			for ( var i = 0, il = this.bones.length; i < il; i ++ ) {
-
-				var inverse = new Matrix4();
-
-				if ( this.bones[ i ] ) {
-
-					inverse.getInverse( this.bones[ i ].matrixWorld );
-
-				}
-
-				this.boneInverses.push( inverse );
-
-			}
-
-		},
-
-		pose: function () {
-
-			var bone, i, il;
-
-			// recover the bind-time world matrices
-
-			for ( i = 0, il = this.bones.length; i < il; i ++ ) {
-
-				bone = this.bones[ i ];
-
-				if ( bone ) {
-
-					bone.matrixWorld.getInverse( this.boneInverses[ i ] );
-
-				}
-
-			}
-
-			// compute the local matrices, positions, rotations and scales
-
-			for ( i = 0, il = this.bones.length; i < il; i ++ ) {
-
-				bone = this.bones[ i ];
-
-				if ( bone ) {
-
-					if ( bone.parent && bone.parent.isBone ) {
-
-						bone.matrix.getInverse( bone.parent.matrixWorld );
-						bone.matrix.multiply( bone.matrixWorld );
-
-					} else {
-
-						bone.matrix.copy( bone.matrixWorld );
-
-					}
-
-					bone.matrix.decompose( bone.position, bone.quaternion, bone.scale );
-
-				}
-
-			}
-
-		},
-
-		update: ( function () {
-
-			var offsetMatrix = new Matrix4();
-			var identityMatrix = new Matrix4();
-
-			return function update() {
-
-				var bones = this.bones;
-				var boneInverses = this.boneInverses;
-				var boneMatrices = this.boneMatrices;
-				var boneTexture = this.boneTexture;
-
-				// flatten bone matrices to array
-
-				for ( var i = 0, il = bones.length; i < il; i ++ ) {
-
-					// compute the offset between the current and the original transform
-
-					var matrix = bones[ i ] ? bones[ i ].matrixWorld : identityMatrix;
-
-					offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );
-					offsetMatrix.toArray( boneMatrices, i * 16 );
-
-				}
-
-				if ( boneTexture !== undefined ) {
-
-					boneTexture.needsUpdate = true;
-
-				}
-
-			};
-
-		} )(),
-
-		clone: function () {
-
-			return new Skeleton( this.bones, this.boneInverses );
-
-		},
-
-		getBoneByName: function ( name ) {
-
-			for ( var i = 0, il = this.bones.length; i < il; i ++ ) {
-
-				var bone = this.bones[ i ];
-
-				if ( bone.name === name ) {
-
-					return bone;
-
-				}
-
-			}
-
-			return undefined;
-
-		}
-
-	} );
-
-	/**
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author ikerr / http://verold.com
-	 */
-
-	function Bone() {
-
-		Object3D.call( this );
-
-		this.type = 'Bone';
-
-	}
-
-	Bone.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: Bone,
-
-		isBone: true
-
-	} );
-
-	/**
-	 * @author mikael emtinger / http://gomo.se/
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author ikerr / http://verold.com
-	 */
-
-	function SkinnedMesh( geometry, material ) {
-
-		Mesh.call( this, geometry, material );
-
-		this.type = 'SkinnedMesh';
-
-		this.bindMode = 'attached';
-		this.bindMatrix = new Matrix4();
-		this.bindMatrixInverse = new Matrix4();
-
-		var bones = this.initBones();
-		var skeleton = new Skeleton( bones );
-
-		this.bind( skeleton, this.matrixWorld );
-
-		this.normalizeSkinWeights();
-
-	}
-
-	SkinnedMesh.prototype = Object.assign( Object.create( Mesh.prototype ), {
-
-		constructor: SkinnedMesh,
-
-		isSkinnedMesh: true,
-
-		initBones: function () {
-
-			var bones = [], bone, gbone;
-			var i, il;
-
-			if ( this.geometry && this.geometry.bones !== undefined ) {
-
-				// first, create array of 'Bone' objects from geometry data
-
-				for ( i = 0, il = this.geometry.bones.length; i < il; i ++ ) {
-
-					gbone = this.geometry.bones[ i ];
-
-					// create new 'Bone' object
-
-					bone = new Bone();
-					bones.push( bone );
-
-					// apply values
-
-					bone.name = gbone.name;
-					bone.position.fromArray( gbone.pos );
-					bone.quaternion.fromArray( gbone.rotq );
-					if ( gbone.scl !== undefined ) bone.scale.fromArray( gbone.scl );
-
-				}
-
-				// second, create bone hierarchy
-
-				for ( i = 0, il = this.geometry.bones.length; i < il; i ++ ) {
-
-					gbone = this.geometry.bones[ i ];
-
-					if ( ( gbone.parent !== - 1 ) && ( gbone.parent !== null ) && ( bones[ gbone.parent ] !== undefined ) ) {
-
-						// subsequent bones in the hierarchy
-
-						bones[ gbone.parent ].add( bones[ i ] );
-
-					} else {
-
-						// topmost bone, immediate child of the skinned mesh
-
-						this.add( bones[ i ] );
-
-					}
-
-				}
-
-			}
-
-			// now the bones are part of the scene graph and children of the skinned mesh.
-			// let's update the corresponding matrices
-
-			this.updateMatrixWorld( true );
-
-			return bones;
-
-		},
-
-		bind: function ( skeleton, bindMatrix ) {
-
-			this.skeleton = skeleton;
-
-			if ( bindMatrix === undefined ) {
-
-				this.updateMatrixWorld( true );
-
-				this.skeleton.calculateInverses();
-
-				bindMatrix = this.matrixWorld;
-
-			}
-
-			this.bindMatrix.copy( bindMatrix );
-			this.bindMatrixInverse.getInverse( bindMatrix );
-
-		},
-
-		pose: function () {
-
-			this.skeleton.pose();
-
-		},
-
-		normalizeSkinWeights: function () {
-
-			var scale, i;
-
-			if ( this.geometry && this.geometry.isGeometry ) {
-
-				for ( i = 0; i < this.geometry.skinWeights.length; i ++ ) {
-
-					var sw = this.geometry.skinWeights[ i ];
-
-					scale = 1.0 / sw.manhattanLength();
-
-					if ( scale !== Infinity ) {
-
-						sw.multiplyScalar( scale );
-
-					} else {
-
-						sw.set( 1, 0, 0, 0 ); // do something reasonable
-
-					}
-
-				}
-
-			} else if ( this.geometry && this.geometry.isBufferGeometry ) {
-
-				var vec = new Vector4();
-
-				var skinWeight = this.geometry.attributes.skinWeight;
-
-				for ( i = 0; i < skinWeight.count; i ++ ) {
-
-					vec.x = skinWeight.getX( i );
-					vec.y = skinWeight.getY( i );
-					vec.z = skinWeight.getZ( i );
-					vec.w = skinWeight.getW( i );
-
-					scale = 1.0 / vec.manhattanLength();
-
-					if ( scale !== Infinity ) {
-
-						vec.multiplyScalar( scale );
-
-					} else {
-
-						vec.set( 1, 0, 0, 0 ); // do something reasonable
-
-					}
-
-					skinWeight.setXYZW( i, vec.x, vec.y, vec.z, vec.w );
-
-				}
-
-			}
-
-		},
-
-		updateMatrixWorld: function ( force ) {
-
-			Mesh.prototype.updateMatrixWorld.call( this, force );
-
-			if ( this.bindMode === 'attached' ) {
-
-				this.bindMatrixInverse.getInverse( this.matrixWorld );
-
-			} else if ( this.bindMode === 'detached' ) {
-
-				this.bindMatrixInverse.getInverse( this.bindMatrix );
-
-			} else {
-
-				console.warn( 'THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode );
-
-			}
-
-		},
-
-		clone: function () {
-
-			return new this.constructor( this.geometry, this.material ).copy( this );
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 *
-	 * parameters = {
-	 *  color: <hex>,
-	 *  opacity: <float>,
-	 *
-	 *  linewidth: <float>,
-	 *  linecap: "round",
-	 *  linejoin: "round"
-	 * }
-	 */
-
-	function LineBasicMaterial( parameters ) {
-
-		Material.call( this );
-
-		this.type = 'LineBasicMaterial';
-
-		this.color = new Color( 0xffffff );
-
-		this.linewidth = 1;
-		this.linecap = 'round';
-		this.linejoin = 'round';
-
-		this.lights = false;
-
-		this.setValues( parameters );
-
-	}
-
-	LineBasicMaterial.prototype = Object.create( Material.prototype );
-	LineBasicMaterial.prototype.constructor = LineBasicMaterial;
-
-	LineBasicMaterial.prototype.isLineBasicMaterial = true;
-
-	LineBasicMaterial.prototype.copy = function ( source ) {
-
-		Material.prototype.copy.call( this, source );
-
-		this.color.copy( source.color );
-
-		this.linewidth = source.linewidth;
-		this.linecap = source.linecap;
-		this.linejoin = source.linejoin;
-
-		return this;
-
-	};
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function Line( geometry, material, mode ) {
-
-		if ( mode === 1 ) {
-
-			console.warn( 'THREE.Line: parameter THREE.LinePieces no longer supported. Created THREE.LineSegments instead.' );
-			return new LineSegments( geometry, material );
-
-		}
-
-		Object3D.call( this );
-
-		this.type = 'Line';
-
-		this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
-		this.material = material !== undefined ? material : new LineBasicMaterial( { color: Math.random() * 0xffffff } );
-
-	}
-
-	Line.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: Line,
-
-		isLine: true,
-
-		computeLineDistances: ( function () {
-
-			var start = new Vector3();
-			var end = new Vector3();
-
-			return function computeLineDistances() {
-
-				var geometry = this.geometry;
-
-				if ( geometry.isBufferGeometry ) {
-
-					// we assume non-indexed geometry
-
-					if ( geometry.index === null ) {
-
-						var positionAttribute = geometry.attributes.position;
-						var lineDistances = [ 0 ];
-
-						for ( var i = 1, l = positionAttribute.count; i < l; i ++ ) {
-
-							start.fromBufferAttribute( positionAttribute, i - 1 );
-							end.fromBufferAttribute( positionAttribute, i );
-
-							lineDistances[ i ] = lineDistances[ i - 1 ];
-							lineDistances[ i ] += start.distanceTo( end );
-
-						}
-
-						geometry.addAttribute( 'lineDistance', new THREE.Float32BufferAttribute( lineDistances, 1 ) );
-
-					} else {
-
-						console.warn( 'THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );
-
-					}
-
-				} else if ( geometry.isGeometry ) {
-
-					var vertices = geometry.vertices;
-					var lineDistances = geometry.lineDistances;
-
-					lineDistances[ 0 ] = 0;
-
-					for ( var i = 1, l = vertices.length; i < l; i ++ ) {
-
-						lineDistances[ i ] = lineDistances[ i - 1 ];
-						lineDistances[ i ] += vertices[ i - 1 ].distanceTo( vertices[ i ] );
-
-					}
-
-				}
-
-				return this;
-
-			};
-
-		}() ),
-
-		raycast: ( function () {
-
-			var inverseMatrix = new Matrix4();
-			var ray = new Ray();
-			var sphere = new Sphere();
-
-			return function raycast( raycaster, intersects ) {
-
-				var precision = raycaster.linePrecision;
-				var precisionSq = precision * precision;
-
-				var geometry = this.geometry;
-				var matrixWorld = this.matrixWorld;
-
-				// Checking boundingSphere distance to ray
-
-				if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
-
-				sphere.copy( geometry.boundingSphere );
-				sphere.applyMatrix4( matrixWorld );
-
-				if ( raycaster.ray.intersectsSphere( sphere ) === false ) return;
-
-				//
-
-				inverseMatrix.getInverse( matrixWorld );
-				ray.copy( raycaster.ray ).applyMatrix4( inverseMatrix );
-
-				var vStart = new Vector3();
-				var vEnd = new Vector3();
-				var interSegment = new Vector3();
-				var interRay = new Vector3();
-				var step = ( this && this.isLineSegments ) ? 2 : 1;
-
-				if ( geometry.isBufferGeometry ) {
-
-					var index = geometry.index;
-					var attributes = geometry.attributes;
-					var positions = attributes.position.array;
-
-					if ( index !== null ) {
-
-						var indices = index.array;
-
-						for ( var i = 0, l = indices.length - 1; i < l; i += step ) {
-
-							var a = indices[ i ];
-							var b = indices[ i + 1 ];
-
-							vStart.fromArray( positions, a * 3 );
-							vEnd.fromArray( positions, b * 3 );
-
-							var distSq = ray.distanceSqToSegment( vStart, vEnd, interRay, interSegment );
-
-							if ( distSq > precisionSq ) continue;
-
-							interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation
-
-							var distance = raycaster.ray.origin.distanceTo( interRay );
-
-							if ( distance < raycaster.near || distance > raycaster.far ) continue;
-
-							intersects.push( {
-
-								distance: distance,
-								// What do we want? intersection point on the ray or on the segment??
-								// point: raycaster.ray.at( distance ),
-								point: interSegment.clone().applyMatrix4( this.matrixWorld ),
-								index: i,
-								face: null,
-								faceIndex: null,
-								object: this
-
-							} );
-
-						}
-
-					} else {
-
-						for ( var i = 0, l = positions.length / 3 - 1; i < l; i += step ) {
-
-							vStart.fromArray( positions, 3 * i );
-							vEnd.fromArray( positions, 3 * i + 3 );
-
-							var distSq = ray.distanceSqToSegment( vStart, vEnd, interRay, interSegment );
-
-							if ( distSq > precisionSq ) continue;
-
-							interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation
-
-							var distance = raycaster.ray.origin.distanceTo( interRay );
-
-							if ( distance < raycaster.near || distance > raycaster.far ) continue;
-
-							intersects.push( {
-
-								distance: distance,
-								// What do we want? intersection point on the ray or on the segment??
-								// point: raycaster.ray.at( distance ),
-								point: interSegment.clone().applyMatrix4( this.matrixWorld ),
-								index: i,
-								face: null,
-								faceIndex: null,
-								object: this
-
-							} );
-
-						}
-
-					}
-
-				} else if ( geometry.isGeometry ) {
-
-					var vertices = geometry.vertices;
-					var nbVertices = vertices.length;
-
-					for ( var i = 0; i < nbVertices - 1; i += step ) {
-
-						var distSq = ray.distanceSqToSegment( vertices[ i ], vertices[ i + 1 ], interRay, interSegment );
-
-						if ( distSq > precisionSq ) continue;
-
-						interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation
-
-						var distance = raycaster.ray.origin.distanceTo( interRay );
-
-						if ( distance < raycaster.near || distance > raycaster.far ) continue;
-
-						intersects.push( {
-
-							distance: distance,
-							// What do we want? intersection point on the ray or on the segment??
-							// point: raycaster.ray.at( distance ),
-							point: interSegment.clone().applyMatrix4( this.matrixWorld ),
-							index: i,
-							face: null,
-							faceIndex: null,
-							object: this
-
-						} );
-
-					}
-
-				}
-
-			};
-
-		}() ),
-
-		clone: function () {
-
-			return new this.constructor( this.geometry, this.material ).copy( this );
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function LineSegments( geometry, material ) {
-
-		Line.call( this, geometry, material );
-
-		this.type = 'LineSegments';
-
-	}
-
-	LineSegments.prototype = Object.assign( Object.create( Line.prototype ), {
-
-		constructor: LineSegments,
-
-		isLineSegments: true,
-
-		computeLineDistances: ( function () {
-
-			var start = new Vector3();
-			var end = new Vector3();
-
-			return function computeLineDistances() {
-
-				var geometry = this.geometry;
-
-				if ( geometry.isBufferGeometry ) {
-
-					// we assume non-indexed geometry
-
-					if ( geometry.index === null ) {
-
-						var positionAttribute = geometry.attributes.position;
-						var lineDistances = [];
-
-						for ( var i = 0, l = positionAttribute.count; i < l; i += 2 ) {
-
-							start.fromBufferAttribute( positionAttribute, i );
-							end.fromBufferAttribute( positionAttribute, i + 1 );
-
-							lineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];
-							lineDistances[ i + 1 ] = lineDistances[ i ] + start.distanceTo( end );
-
-						}
-
-						geometry.addAttribute( 'lineDistance', new THREE.Float32BufferAttribute( lineDistances, 1 ) );
-
-					} else {
-
-						console.warn( 'THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );
-
-					}
-
-				} else if ( geometry.isGeometry ) {
-
-					var vertices = geometry.vertices;
-					var lineDistances = geometry.lineDistances;
-
-					for ( var i = 0, l = vertices.length; i < l; i += 2 ) {
-
-						start.copy( vertices[ i ] );
-						end.copy( vertices[ i + 1 ] );
-
-						lineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];
-						lineDistances[ i + 1 ] = lineDistances[ i ] + start.distanceTo( end );
-
-					}
-
-				}
-
-				return this;
-
-			};
-
-		}() )
-
-	} );
-
-	/**
-	 * @author mgreter / http://github.com/mgreter
-	 */
-
-	function LineLoop( geometry, material ) {
-
-		Line.call( this, geometry, material );
-
-		this.type = 'LineLoop';
-
-	}
-
-	LineLoop.prototype = Object.assign( Object.create( Line.prototype ), {
-
-		constructor: LineLoop,
-
-		isLineLoop: true,
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 *
-	 * parameters = {
-	 *  color: <hex>,
-	 *  opacity: <float>,
-	 *  map: new THREE.Texture( <Image> ),
-	 *
-	 *  size: <float>,
-	 *  sizeAttenuation: <bool>
-	 * }
-	 */
-
-	function PointsMaterial( parameters ) {
-
-		Material.call( this );
-
-		this.type = 'PointsMaterial';
-
-		this.color = new Color( 0xffffff );
-
-		this.map = null;
-
-		this.size = 1;
-		this.sizeAttenuation = true;
-
-		this.lights = false;
-
-		this.setValues( parameters );
-
-	}
-
-	PointsMaterial.prototype = Object.create( Material.prototype );
-	PointsMaterial.prototype.constructor = PointsMaterial;
-
-	PointsMaterial.prototype.isPointsMaterial = true;
-
-	PointsMaterial.prototype.copy = function ( source ) {
-
-		Material.prototype.copy.call( this, source );
-
-		this.color.copy( source.color );
-
-		this.map = source.map;
-
-		this.size = source.size;
-		this.sizeAttenuation = source.sizeAttenuation;
-
-		return this;
-
-	};
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function Points( geometry, material ) {
-
-		Object3D.call( this );
-
-		this.type = 'Points';
-
-		this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
-		this.material = material !== undefined ? material : new PointsMaterial( { color: Math.random() * 0xffffff } );
-
-	}
-
-	Points.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: Points,
-
-		isPoints: true,
-
-		raycast: ( function () {
-
-			var inverseMatrix = new Matrix4();
-			var ray = new Ray();
-			var sphere = new Sphere();
-
-			return function raycast( raycaster, intersects ) {
-
-				var object = this;
-				var geometry = this.geometry;
-				var matrixWorld = this.matrixWorld;
-				var threshold = raycaster.params.Points.threshold;
-
-				// Checking boundingSphere distance to ray
-
-				if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
-
-				sphere.copy( geometry.boundingSphere );
-				sphere.applyMatrix4( matrixWorld );
-				sphere.radius += threshold;
-
-				if ( raycaster.ray.intersectsSphere( sphere ) === false ) return;
-
-				//
-
-				inverseMatrix.getInverse( matrixWorld );
-				ray.copy( raycaster.ray ).applyMatrix4( inverseMatrix );
-
-				var localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
-				var localThresholdSq = localThreshold * localThreshold;
-				var position = new Vector3();
-				var intersectPoint = new Vector3();
-
-				function testPoint( point, index ) {
-
-					var rayPointDistanceSq = ray.distanceSqToPoint( point );
-
-					if ( rayPointDistanceSq < localThresholdSq ) {
-
-						ray.closestPointToPoint( point, intersectPoint );
-						intersectPoint.applyMatrix4( matrixWorld );
-
-						var distance = raycaster.ray.origin.distanceTo( intersectPoint );
-
-						if ( distance < raycaster.near || distance > raycaster.far ) return;
-
-						intersects.push( {
-
-							distance: distance,
-							distanceToRay: Math.sqrt( rayPointDistanceSq ),
-							point: intersectPoint.clone(),
-							index: index,
-							face: null,
-							object: object
-
-						} );
-
-					}
-
-				}
-
-				if ( geometry.isBufferGeometry ) {
-
-					var index = geometry.index;
-					var attributes = geometry.attributes;
-					var positions = attributes.position.array;
-
-					if ( index !== null ) {
-
-						var indices = index.array;
-
-						for ( var i = 0, il = indices.length; i < il; i ++ ) {
-
-							var a = indices[ i ];
-
-							position.fromArray( positions, a * 3 );
-
-							testPoint( position, a );
-
-						}
-
-					} else {
-
-						for ( var i = 0, l = positions.length / 3; i < l; i ++ ) {
-
-							position.fromArray( positions, i * 3 );
-
-							testPoint( position, i );
-
-						}
-
-					}
-
-				} else {
-
-					var vertices = geometry.vertices;
-
-					for ( var i = 0, l = vertices.length; i < l; i ++ ) {
-
-						testPoint( vertices[ i ], i );
-
-					}
-
-				}
-
-			};
-
-		}() ),
-
-		clone: function () {
-
-			return new this.constructor( this.geometry, this.material ).copy( this );
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function Group() {
-
-		Object3D.call( this );
-
-		this.type = 'Group';
-
-	}
-
-	Group.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: Group,
-
-		isGroup: true
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function VideoTexture( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {
-
-		Texture.call( this, video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
-
-		this.generateMipmaps = false;
-
-	}
-
-	VideoTexture.prototype = Object.assign( Object.create( Texture.prototype ), {
-
-		constructor: VideoTexture,
-
-		isVideoTexture: true,
-
-		update: function () {
-
-			var video = this.image;
-
-			if ( video.readyState >= video.HAVE_CURRENT_DATA ) {
-
-				this.needsUpdate = true;
-
-			}
-
-		}
-
-	} );
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function CompressedTexture( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {
-
-		Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );
-
-		this.image = { width: width, height: height };
-		this.mipmaps = mipmaps;
-
-		// no flipping for cube textures
-		// (also flipping doesn't work for compressed textures )
-
-		this.flipY = false;
-
-		// can't generate mipmaps for compressed textures
-		// mips must be embedded in DDS files
-
-		this.generateMipmaps = false;
-
-	}
-
-	CompressedTexture.prototype = Object.create( Texture.prototype );
-	CompressedTexture.prototype.constructor = CompressedTexture;
-
-	CompressedTexture.prototype.isCompressedTexture = true;
-
-	/**
-	 * @author Matt DesLauriers / @mattdesl
-	 * @author atix / arthursilber.de
-	 */
-
-	function DepthTexture( width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format ) {
-
-		format = format !== undefined ? format : DepthFormat;
-
-		if ( format !== DepthFormat && format !== DepthStencilFormat ) {
-
-			throw new Error( 'DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat' );
-
-		}
-
-		if ( type === undefined && format === DepthFormat ) type = UnsignedShortType;
-		if ( type === undefined && format === DepthStencilFormat ) type = UnsignedInt248Type;
-
-		Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
-
-		this.image = { width: width, height: height };
-
-		this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
-		this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
-
-		this.flipY = false;
-		this.generateMipmaps	= false;
-
-	}
-
-	DepthTexture.prototype = Object.create( Texture.prototype );
-	DepthTexture.prototype.constructor = DepthTexture;
-	DepthTexture.prototype.isDepthTexture = true;
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	function WireframeGeometry( geometry ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'WireframeGeometry';
-
-		// buffer
-
-		var vertices = [];
-
-		// helper variables
-
-		var i, j, l, o, ol;
-		var edge = [ 0, 0 ], edges = {}, e, edge1, edge2;
-		var key, keys = [ 'a', 'b', 'c' ];
-		var vertex;
-
-		// different logic for Geometry and BufferGeometry
-
-		if ( geometry && geometry.isGeometry ) {
-
-			// create a data structure that contains all edges without duplicates
-
-			var faces = geometry.faces;
-
-			for ( i = 0, l = faces.length; i < l; i ++ ) {
-
-				var face = faces[ i ];
-
-				for ( j = 0; j < 3; j ++ ) {
-
-					edge1 = face[ keys[ j ] ];
-					edge2 = face[ keys[ ( j + 1 ) % 3 ] ];
-					edge[ 0 ] = Math.min( edge1, edge2 ); // sorting prevents duplicates
-					edge[ 1 ] = Math.max( edge1, edge2 );
-
-					key = edge[ 0 ] + ',' + edge[ 1 ];
-
-					if ( edges[ key ] === undefined ) {
-
-						edges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ] };
-
-					}
-
-				}
-
-			}
-
-			// generate vertices
-
-			for ( key in edges ) {
-
-				e = edges[ key ];
-
-				vertex = geometry.vertices[ e.index1 ];
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-				vertex = geometry.vertices[ e.index2 ];
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-			}
-
-		} else if ( geometry && geometry.isBufferGeometry ) {
-
-			var position, indices, groups;
-			var group, start, count;
-			var index1, index2;
-
-			vertex = new Vector3();
-
-			if ( geometry.index !== null ) {
-
-				// indexed BufferGeometry
-
-				position = geometry.attributes.position;
-				indices = geometry.index;
-				groups = geometry.groups;
-
-				if ( groups.length === 0 ) {
-
-					groups = [ { start: 0, count: indices.count, materialIndex: 0 } ];
-
-				}
-
-				// create a data structure that contains all eges without duplicates
-
-				for ( o = 0, ol = groups.length; o < ol; ++ o ) {
-
-					group = groups[ o ];
-
-					start = group.start;
-					count = group.count;
-
-					for ( i = start, l = ( start + count ); i < l; i += 3 ) {
-
-						for ( j = 0; j < 3; j ++ ) {
-
-							edge1 = indices.getX( i + j );
-							edge2 = indices.getX( i + ( j + 1 ) % 3 );
-							edge[ 0 ] = Math.min( edge1, edge2 ); // sorting prevents duplicates
-							edge[ 1 ] = Math.max( edge1, edge2 );
-
-							key = edge[ 0 ] + ',' + edge[ 1 ];
-
-							if ( edges[ key ] === undefined ) {
-
-								edges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ] };
-
-							}
-
-						}
-
-					}
-
-				}
-
-				// generate vertices
-
-				for ( key in edges ) {
-
-					e = edges[ key ];
-
-					vertex.fromBufferAttribute( position, e.index1 );
-					vertices.push( vertex.x, vertex.y, vertex.z );
-
-					vertex.fromBufferAttribute( position, e.index2 );
-					vertices.push( vertex.x, vertex.y, vertex.z );
-
-				}
-
-			} else {
-
-				// non-indexed BufferGeometry
-
-				position = geometry.attributes.position;
-
-				for ( i = 0, l = ( position.count / 3 ); i < l; i ++ ) {
-
-					for ( j = 0; j < 3; j ++ ) {
-
-						// three edges per triangle, an edge is represented as (index1, index2)
-						// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)
-
-						index1 = 3 * i + j;
-						vertex.fromBufferAttribute( position, index1 );
-						vertices.push( vertex.x, vertex.y, vertex.z );
-
-						index2 = 3 * i + ( ( j + 1 ) % 3 );
-						vertex.fromBufferAttribute( position, index2 );
-						vertices.push( vertex.x, vertex.y, vertex.z );
-
-					}
-
-				}
-
-			}
-
-		}
-
-		// build geometry
-
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-
-	}
-
-	WireframeGeometry.prototype = Object.create( BufferGeometry.prototype );
-	WireframeGeometry.prototype.constructor = WireframeGeometry;
-
-	/**
-	 * @author zz85 / https://github.com/zz85
-	 * @author Mugen87 / https://github.com/Mugen87
-	 *
-	 * Parametric Surfaces Geometry
-	 * based on the brilliant article by @prideout http://prideout.net/blog/?p=44
-	 */
-
-	// ParametricGeometry
-
-	function ParametricGeometry( func, slices, stacks ) {
-
-		Geometry.call( this );
-
-		this.type = 'ParametricGeometry';
-
-		this.parameters = {
-			func: func,
-			slices: slices,
-			stacks: stacks
-		};
-
-		this.fromBufferGeometry( new ParametricBufferGeometry( func, slices, stacks ) );
-		this.mergeVertices();
-
-	}
-
-	ParametricGeometry.prototype = Object.create( Geometry.prototype );
-	ParametricGeometry.prototype.constructor = ParametricGeometry;
-
-	// ParametricBufferGeometry
-
-	function ParametricBufferGeometry( func, slices, stacks ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'ParametricBufferGeometry';
-
-		this.parameters = {
-			func: func,
-			slices: slices,
-			stacks: stacks
-		};
-
-		// buffers
-
-		var indices = [];
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
-
-		var EPS = 0.00001;
-
-		var normal = new Vector3();
-
-		var p0 = new Vector3(), p1 = new Vector3();
-		var pu = new Vector3(), pv = new Vector3();
-
-		var i, j;
-
-		// generate vertices, normals and uvs
-
-		var sliceCount = slices + 1;
-
-		for ( i = 0; i <= stacks; i ++ ) {
-
-			var v = i / stacks;
-
-			for ( j = 0; j <= slices; j ++ ) {
-
-				var u = j / slices;
-
-				// vertex
-
-				func( u, v, p0 );
-				vertices.push( p0.x, p0.y, p0.z );
-
-				// normal
-
-				// approximate tangent vectors via finite differences
-
-				if ( u - EPS >= 0 ) {
-
-					func( u - EPS, v, p1 );
-					pu.subVectors( p0, p1 );
-
-				} else {
-
-					func( u + EPS, v, p1 );
-					pu.subVectors( p1, p0 );
-
-				}
-
-				if ( v - EPS >= 0 ) {
-
-					func( u, v - EPS, p1 );
-					pv.subVectors( p0, p1 );
-
-				} else {
-
-					func( u, v + EPS, p1 );
-					pv.subVectors( p1, p0 );
-
-				}
-
-				// cross product of tangent vectors returns surface normal
-
-				normal.crossVectors( pu, pv ).normalize();
-				normals.push( normal.x, normal.y, normal.z );
-
-				// uv
-
-				uvs.push( u, v );
-
-			}
-
-		}
-
-		// generate indices
-
-		for ( i = 0; i < stacks; i ++ ) {
-
-			for ( j = 0; j < slices; j ++ ) {
-
-				var a = i * sliceCount + j;
-				var b = i * sliceCount + j + 1;
-				var c = ( i + 1 ) * sliceCount + j + 1;
-				var d = ( i + 1 ) * sliceCount + j;
-
-				// faces one and two
-
-				indices.push( a, b, d );
-				indices.push( b, c, d );
-
-			}
-
-		}
-
-		// build geometry
-
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
-
-	}
-
-	ParametricBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	ParametricBufferGeometry.prototype.constructor = ParametricBufferGeometry;
-
-	/**
-	 * @author clockworkgeek / https://github.com/clockworkgeek
-	 * @author timothypratley / https://github.com/timothypratley
-	 * @author WestLangley / http://github.com/WestLangley
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// PolyhedronGeometry
-
-	function PolyhedronGeometry( vertices, indices, radius, detail ) {
-
-		Geometry.call( this );
-
-		this.type = 'PolyhedronGeometry';
-
-		this.parameters = {
-			vertices: vertices,
-			indices: indices,
-			radius: radius,
-			detail: detail
-		};
-
-		this.fromBufferGeometry( new PolyhedronBufferGeometry( vertices, indices, radius, detail ) );
-		this.mergeVertices();
-
-	}
-
-	PolyhedronGeometry.prototype = Object.create( Geometry.prototype );
-	PolyhedronGeometry.prototype.constructor = PolyhedronGeometry;
-
-	// PolyhedronBufferGeometry
-
-	function PolyhedronBufferGeometry( vertices, indices, radius, detail ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'PolyhedronBufferGeometry';
-
-		this.parameters = {
-			vertices: vertices,
-			indices: indices,
-			radius: radius,
-			detail: detail
-		};
-
-		radius = radius || 1;
-		detail = detail || 0;
-
-		// default buffer data
-
-		var vertexBuffer = [];
-		var uvBuffer = [];
-
-		// the subdivision creates the vertex buffer data
-
-		subdivide( detail );
-
-		// all vertices should lie on a conceptual sphere with a given radius
-
-		appplyRadius( radius );
-
-		// finally, create the uv data
-
-		generateUVs();
-
-		// build non-indexed geometry
-
-		this.addAttribute( 'position', new Float32BufferAttribute( vertexBuffer, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( vertexBuffer.slice(), 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvBuffer, 2 ) );
-
-		if ( detail === 0 ) {
-
-			this.computeVertexNormals(); // flat normals
-
-		} else {
-
-			this.normalizeNormals(); // smooth normals
-
-		}
-
-		// helper functions
-
-		function subdivide( detail ) {
-
-			var a = new Vector3();
-			var b = new Vector3();
-			var c = new Vector3();
-
-			// iterate over all faces and apply a subdivison with the given detail value
-
-			for ( var i = 0; i < indices.length; i += 3 ) {
-
-				// get the vertices of the face
-
-				getVertexByIndex( indices[ i + 0 ], a );
-				getVertexByIndex( indices[ i + 1 ], b );
-				getVertexByIndex( indices[ i + 2 ], c );
-
-				// perform subdivision
-
-				subdivideFace( a, b, c, detail );
-
-			}
-
-		}
-
-		function subdivideFace( a, b, c, detail ) {
-
-			var cols = Math.pow( 2, detail );
-
-			// we use this multidimensional array as a data structure for creating the subdivision
-
-			var v = [];
-
-			var i, j;
-
-			// construct all of the vertices for this subdivision
-
-			for ( i = 0; i <= cols; i ++ ) {
-
-				v[ i ] = [];
-
-				var aj = a.clone().lerp( c, i / cols );
-				var bj = b.clone().lerp( c, i / cols );
-
-				var rows = cols - i;
-
-				for ( j = 0; j <= rows; j ++ ) {
-
-					if ( j === 0 && i === cols ) {
-
-						v[ i ][ j ] = aj;
-
-					} else {
-
-						v[ i ][ j ] = aj.clone().lerp( bj, j / rows );
-
-					}
-
-				}
-
-			}
-
-			// construct all of the faces
-
-			for ( i = 0; i < cols; i ++ ) {
-
-				for ( j = 0; j < 2 * ( cols - i ) - 1; j ++ ) {
-
-					var k = Math.floor( j / 2 );
-
-					if ( j % 2 === 0 ) {
-
-						pushVertex( v[ i ][ k + 1 ] );
-						pushVertex( v[ i + 1 ][ k ] );
-						pushVertex( v[ i ][ k ] );
-
-					} else {
-
-						pushVertex( v[ i ][ k + 1 ] );
-						pushVertex( v[ i + 1 ][ k + 1 ] );
-						pushVertex( v[ i + 1 ][ k ] );
-
-					}
-
-				}
-
-			}
-
-		}
-
-		function appplyRadius( radius ) {
-
-			var vertex = new Vector3();
-
-			// iterate over the entire buffer and apply the radius to each vertex
-
-			for ( var i = 0; i < vertexBuffer.length; i += 3 ) {
-
-				vertex.x = vertexBuffer[ i + 0 ];
-				vertex.y = vertexBuffer[ i + 1 ];
-				vertex.z = vertexBuffer[ i + 2 ];
-
-				vertex.normalize().multiplyScalar( radius );
-
-				vertexBuffer[ i + 0 ] = vertex.x;
-				vertexBuffer[ i + 1 ] = vertex.y;
-				vertexBuffer[ i + 2 ] = vertex.z;
-
-			}
-
-		}
-
-		function generateUVs() {
-
-			var vertex = new Vector3();
-
-			for ( var i = 0; i < vertexBuffer.length; i += 3 ) {
-
-				vertex.x = vertexBuffer[ i + 0 ];
-				vertex.y = vertexBuffer[ i + 1 ];
-				vertex.z = vertexBuffer[ i + 2 ];
-
-				var u = azimuth( vertex ) / 2 / Math.PI + 0.5;
-				var v = inclination( vertex ) / Math.PI + 0.5;
-				uvBuffer.push( u, 1 - v );
-
-			}
-
-			correctUVs();
-
-			correctSeam();
-
-		}
-
-		function correctSeam() {
-
-			// handle case when face straddles the seam, see #3269
-
-			for ( var i = 0; i < uvBuffer.length; i += 6 ) {
-
-				// uv data of a single face
-
-				var x0 = uvBuffer[ i + 0 ];
-				var x1 = uvBuffer[ i + 2 ];
-				var x2 = uvBuffer[ i + 4 ];
-
-				var max = Math.max( x0, x1, x2 );
-				var min = Math.min( x0, x1, x2 );
-
-				// 0.9 is somewhat arbitrary
-
-				if ( max > 0.9 && min < 0.1 ) {
-
-					if ( x0 < 0.2 ) uvBuffer[ i + 0 ] += 1;
-					if ( x1 < 0.2 ) uvBuffer[ i + 2 ] += 1;
-					if ( x2 < 0.2 ) uvBuffer[ i + 4 ] += 1;
-
-				}
-
-			}
-
-		}
-
-		function pushVertex( vertex ) {
-
-			vertexBuffer.push( vertex.x, vertex.y, vertex.z );
-
-		}
-
-		function getVertexByIndex( index, vertex ) {
-
-			var stride = index * 3;
-
-			vertex.x = vertices[ stride + 0 ];
-			vertex.y = vertices[ stride + 1 ];
-			vertex.z = vertices[ stride + 2 ];
-
-		}
-
-		function correctUVs() {
-
-			var a = new Vector3();
-			var b = new Vector3();
-			var c = new Vector3();
-
-			var centroid = new Vector3();
-
-			var uvA = new Vector2();
-			var uvB = new Vector2();
-			var uvC = new Vector2();
-
-			for ( var i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6 ) {
-
-				a.set( vertexBuffer[ i + 0 ], vertexBuffer[ i + 1 ], vertexBuffer[ i + 2 ] );
-				b.set( vertexBuffer[ i + 3 ], vertexBuffer[ i + 4 ], vertexBuffer[ i + 5 ] );
-				c.set( vertexBuffer[ i + 6 ], vertexBuffer[ i + 7 ], vertexBuffer[ i + 8 ] );
-
-				uvA.set( uvBuffer[ j + 0 ], uvBuffer[ j + 1 ] );
-				uvB.set( uvBuffer[ j + 2 ], uvBuffer[ j + 3 ] );
-				uvC.set( uvBuffer[ j + 4 ], uvBuffer[ j + 5 ] );
-
-				centroid.copy( a ).add( b ).add( c ).divideScalar( 3 );
-
-				var azi = azimuth( centroid );
-
-				correctUV( uvA, j + 0, a, azi );
-				correctUV( uvB, j + 2, b, azi );
-				correctUV( uvC, j + 4, c, azi );
-
-			}
-
-		}
-
-		function correctUV( uv, stride, vector, azimuth ) {
-
-			if ( ( azimuth < 0 ) && ( uv.x === 1 ) ) {
-
-				uvBuffer[ stride ] = uv.x - 1;
-
-			}
-
-			if ( ( vector.x === 0 ) && ( vector.z === 0 ) ) {
-
-				uvBuffer[ stride ] = azimuth / 2 / Math.PI + 0.5;
-
-			}
-
-		}
-
-		// Angle around the Y axis, counter-clockwise when looking from above.
-
-		function azimuth( vector ) {
-
-			return Math.atan2( vector.z, - vector.x );
-
-		}
-
-
-		// Angle above the XZ plane.
-
-		function inclination( vector ) {
-
-			return Math.atan2( - vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );
-
-		}
-
-	}
-
-	PolyhedronBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	PolyhedronBufferGeometry.prototype.constructor = PolyhedronBufferGeometry;
-
-	/**
-	 * @author timothypratley / https://github.com/timothypratley
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// TetrahedronGeometry
-
-	function TetrahedronGeometry( radius, detail ) {
-
-		Geometry.call( this );
-
-		this.type = 'TetrahedronGeometry';
-
-		this.parameters = {
-			radius: radius,
-			detail: detail
-		};
-
-		this.fromBufferGeometry( new TetrahedronBufferGeometry( radius, detail ) );
-		this.mergeVertices();
-
-	}
-
-	TetrahedronGeometry.prototype = Object.create( Geometry.prototype );
-	TetrahedronGeometry.prototype.constructor = TetrahedronGeometry;
-
-	// TetrahedronBufferGeometry
-
-	function TetrahedronBufferGeometry( radius, detail ) {
-
-		var vertices = [
-			1, 1, 1, 	- 1, - 1, 1, 	- 1, 1, - 1, 	1, - 1, - 1
-		];
-
-		var indices = [
-			2, 1, 0, 	0, 3, 2,	1, 3, 0,	2, 3, 1
-		];
-
-		PolyhedronBufferGeometry.call( this, vertices, indices, radius, detail );
-
-		this.type = 'TetrahedronBufferGeometry';
-
-		this.parameters = {
-			radius: radius,
-			detail: detail
-		};
-
-	}
-
-	TetrahedronBufferGeometry.prototype = Object.create( PolyhedronBufferGeometry.prototype );
-	TetrahedronBufferGeometry.prototype.constructor = TetrahedronBufferGeometry;
-
-	/**
-	 * @author timothypratley / https://github.com/timothypratley
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// OctahedronGeometry
-
-	function OctahedronGeometry( radius, detail ) {
-
-		Geometry.call( this );
-
-		this.type = 'OctahedronGeometry';
-
-		this.parameters = {
-			radius: radius,
-			detail: detail
-		};
-
-		this.fromBufferGeometry( new OctahedronBufferGeometry( radius, detail ) );
-		this.mergeVertices();
-
-	}
-
-	OctahedronGeometry.prototype = Object.create( Geometry.prototype );
-	OctahedronGeometry.prototype.constructor = OctahedronGeometry;
-
-	// OctahedronBufferGeometry
-
-	function OctahedronBufferGeometry( radius, detail ) {
-
-		var vertices = [
-			1, 0, 0, 	- 1, 0, 0,	0, 1, 0,
-			0, - 1, 0, 	0, 0, 1,	0, 0, - 1
-		];
-
-		var indices = [
-			0, 2, 4,	0, 4, 3,	0, 3, 5,
-			0, 5, 2,	1, 2, 5,	1, 5, 3,
-			1, 3, 4,	1, 4, 2
-		];
-
-		PolyhedronBufferGeometry.call( this, vertices, indices, radius, detail );
-
-		this.type = 'OctahedronBufferGeometry';
-
-		this.parameters = {
-			radius: radius,
-			detail: detail
-		};
-
-	}
-
-	OctahedronBufferGeometry.prototype = Object.create( PolyhedronBufferGeometry.prototype );
-	OctahedronBufferGeometry.prototype.constructor = OctahedronBufferGeometry;
-
-	/**
-	 * @author timothypratley / https://github.com/timothypratley
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// IcosahedronGeometry
-
-	function IcosahedronGeometry( radius, detail ) {
-
-		Geometry.call( this );
-
-		this.type = 'IcosahedronGeometry';
-
-		this.parameters = {
-			radius: radius,
-			detail: detail
-		};
-
-		this.fromBufferGeometry( new IcosahedronBufferGeometry( radius, detail ) );
-		this.mergeVertices();
-
-	}
-
-	IcosahedronGeometry.prototype = Object.create( Geometry.prototype );
-	IcosahedronGeometry.prototype.constructor = IcosahedronGeometry;
-
-	// IcosahedronBufferGeometry
-
-	function IcosahedronBufferGeometry( radius, detail ) {
-
-		var t = ( 1 + Math.sqrt( 5 ) ) / 2;
-
-		var vertices = [
-			- 1, t, 0, 	1, t, 0, 	- 1, - t, 0, 	1, - t, 0,
-			 0, - 1, t, 	0, 1, t,	0, - 1, - t, 	0, 1, - t,
-			 t, 0, - 1, 	t, 0, 1, 	- t, 0, - 1, 	- t, 0, 1
-		];
-
-		var indices = [
-			 0, 11, 5, 	0, 5, 1, 	0, 1, 7, 	0, 7, 10, 	0, 10, 11,
-			 1, 5, 9, 	5, 11, 4,	11, 10, 2,	10, 7, 6,	7, 1, 8,
-			 3, 9, 4, 	3, 4, 2,	3, 2, 6,	3, 6, 8,	3, 8, 9,
-			 4, 9, 5, 	2, 4, 11,	6, 2, 10,	8, 6, 7,	9, 8, 1
-		];
-
-		PolyhedronBufferGeometry.call( this, vertices, indices, radius, detail );
-
-		this.type = 'IcosahedronBufferGeometry';
-
-		this.parameters = {
-			radius: radius,
-			detail: detail
-		};
-
-	}
-
-	IcosahedronBufferGeometry.prototype = Object.create( PolyhedronBufferGeometry.prototype );
-	IcosahedronBufferGeometry.prototype.constructor = IcosahedronBufferGeometry;
-
-	/**
-	 * @author Abe Pazos / https://hamoid.com
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// DodecahedronGeometry
-
-	function DodecahedronGeometry( radius, detail ) {
-
-		Geometry.call( this );
-
-		this.type = 'DodecahedronGeometry';
-
-		this.parameters = {
-			radius: radius,
-			detail: detail
-		};
-
-		this.fromBufferGeometry( new DodecahedronBufferGeometry( radius, detail ) );
-		this.mergeVertices();
-
-	}
-
-	DodecahedronGeometry.prototype = Object.create( Geometry.prototype );
-	DodecahedronGeometry.prototype.constructor = DodecahedronGeometry;
-
-	// DodecahedronBufferGeometry
-
-	function DodecahedronBufferGeometry( radius, detail ) {
-
-		var t = ( 1 + Math.sqrt( 5 ) ) / 2;
-		var r = 1 / t;
-
-		var vertices = [
-
-			// (±1, ±1, ±1)
-			- 1, - 1, - 1,	- 1, - 1, 1,
-			- 1, 1, - 1, - 1, 1, 1,
-			1, - 1, - 1, 1, - 1, 1,
-			1, 1, - 1, 1, 1, 1,
-
-			// (0, ±1/φ, ±φ)
-			 0, - r, - t, 0, - r, t,
-			 0, r, - t, 0, r, t,
-
-			// (±1/φ, ±φ, 0)
-			- r, - t, 0, - r, t, 0,
-			 r, - t, 0, r, t, 0,
-
-			// (±φ, 0, ±1/φ)
-			- t, 0, - r, t, 0, - r,
-			- t, 0, r, t, 0, r
-		];
-
-		var indices = [
-			3, 11, 7, 	3, 7, 15, 	3, 15, 13,
-			7, 19, 17, 	7, 17, 6, 	7, 6, 15,
-			17, 4, 8, 	17, 8, 10, 	17, 10, 6,
-			8, 0, 16, 	8, 16, 2, 	8, 2, 10,
-			0, 12, 1, 	0, 1, 18, 	0, 18, 16,
-			6, 10, 2, 	6, 2, 13, 	6, 13, 15,
-			2, 16, 18, 	2, 18, 3, 	2, 3, 13,
-			18, 1, 9, 	18, 9, 11, 	18, 11, 3,
-			4, 14, 12, 	4, 12, 0, 	4, 0, 8,
-			11, 9, 5, 	11, 5, 19, 	11, 19, 7,
-			19, 5, 14, 	19, 14, 4, 	19, 4, 17,
-			1, 12, 14, 	1, 14, 5, 	1, 5, 9
-		];
-
-		PolyhedronBufferGeometry.call( this, vertices, indices, radius, detail );
-
-		this.type = 'DodecahedronBufferGeometry';
-
-		this.parameters = {
-			radius: radius,
-			detail: detail
-		};
-
-	}
-
-	DodecahedronBufferGeometry.prototype = Object.create( PolyhedronBufferGeometry.prototype );
-	DodecahedronBufferGeometry.prototype.constructor = DodecahedronBufferGeometry;
-
-	/**
-	 * @author oosmoxiecode / https://github.com/oosmoxiecode
-	 * @author WestLangley / https://github.com/WestLangley
-	 * @author zz85 / https://github.com/zz85
-	 * @author miningold / https://github.com/miningold
-	 * @author jonobr1 / https://github.com/jonobr1
-	 * @author Mugen87 / https://github.com/Mugen87
-	 *
-	 */
-
-	// TubeGeometry
-
-	function TubeGeometry( path, tubularSegments, radius, radialSegments, closed, taper ) {
-
-		Geometry.call( this );
-
-		this.type = 'TubeGeometry';
-
-		this.parameters = {
-			path: path,
-			tubularSegments: tubularSegments,
-			radius: radius,
-			radialSegments: radialSegments,
-			closed: closed
-		};
-
-		if ( taper !== undefined ) console.warn( 'THREE.TubeGeometry: taper has been removed.' );
-
-		var bufferGeometry = new TubeBufferGeometry( path, tubularSegments, radius, radialSegments, closed );
-
-		// expose internals
-
-		this.tangents = bufferGeometry.tangents;
-		this.normals = bufferGeometry.normals;
-		this.binormals = bufferGeometry.binormals;
-
-		// create geometry
-
-		this.fromBufferGeometry( bufferGeometry );
-		this.mergeVertices();
-
-	}
-
-	TubeGeometry.prototype = Object.create( Geometry.prototype );
-	TubeGeometry.prototype.constructor = TubeGeometry;
-
-	// TubeBufferGeometry
-
-	function TubeBufferGeometry( path, tubularSegments, radius, radialSegments, closed ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'TubeBufferGeometry';
-
-		this.parameters = {
-			path: path,
-			tubularSegments: tubularSegments,
-			radius: radius,
-			radialSegments: radialSegments,
-			closed: closed
-		};
-
-		tubularSegments = tubularSegments || 64;
-		radius = radius || 1;
-		radialSegments = radialSegments || 8;
-		closed = closed || false;
-
-		var frames = path.computeFrenetFrames( tubularSegments, closed );
-
-		// expose internals
-
-		this.tangents = frames.tangents;
-		this.normals = frames.normals;
-		this.binormals = frames.binormals;
-
-		// helper variables
-
-		var vertex = new Vector3();
-		var normal = new Vector3();
-		var uv = new Vector2();
-		var P = new Vector3();
-
-		var i, j;
-
-		// buffer
-
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
-		var indices = [];
-
-		// create buffer data
-
-		generateBufferData();
-
-		// build geometry
-
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
-
-		// functions
-
-		function generateBufferData() {
-
-			for ( i = 0; i < tubularSegments; i ++ ) {
-
-				generateSegment( i );
-
-			}
-
-			// if the geometry is not closed, generate the last row of vertices and normals
-			// at the regular position on the given path
-			//
-			// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)
-
-			generateSegment( ( closed === false ) ? tubularSegments : 0 );
-
-			// uvs are generated in a separate function.
-			// this makes it easy compute correct values for closed geometries
-
-			generateUVs();
-
-			// finally create faces
-
-			generateIndices();
-
-		}
-
-		function generateSegment( i ) {
-
-			// we use getPointAt to sample evenly distributed points from the given path
-
-			P = path.getPointAt( i / tubularSegments, P );
-
-			// retrieve corresponding normal and binormal
-
-			var N = frames.normals[ i ];
-			var B = frames.binormals[ i ];
-
-			// generate normals and vertices for the current segment
-
-			for ( j = 0; j <= radialSegments; j ++ ) {
-
-				var v = j / radialSegments * Math.PI * 2;
-
-				var sin = Math.sin( v );
-				var cos = - Math.cos( v );
-
-				// normal
-
-				normal.x = ( cos * N.x + sin * B.x );
-				normal.y = ( cos * N.y + sin * B.y );
-				normal.z = ( cos * N.z + sin * B.z );
-				normal.normalize();
-
-				normals.push( normal.x, normal.y, normal.z );
-
-				// vertex
-
-				vertex.x = P.x + radius * normal.x;
-				vertex.y = P.y + radius * normal.y;
-				vertex.z = P.z + radius * normal.z;
-
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-			}
-
-		}
-
-		function generateIndices() {
-
-			for ( j = 1; j <= tubularSegments; j ++ ) {
-
-				for ( i = 1; i <= radialSegments; i ++ ) {
-
-					var a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
-					var b = ( radialSegments + 1 ) * j + ( i - 1 );
-					var c = ( radialSegments + 1 ) * j + i;
-					var d = ( radialSegments + 1 ) * ( j - 1 ) + i;
-
-					// faces
-
-					indices.push( a, b, d );
-					indices.push( b, c, d );
-
-				}
-
-			}
-
-		}
-
-		function generateUVs() {
-
-			for ( i = 0; i <= tubularSegments; i ++ ) {
-
-				for ( j = 0; j <= radialSegments; j ++ ) {
-
-					uv.x = i / tubularSegments;
-					uv.y = j / radialSegments;
-
-					uvs.push( uv.x, uv.y );
-
-				}
-
-			}
-
-		}
-
-	}
-
-	TubeBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	TubeBufferGeometry.prototype.constructor = TubeBufferGeometry;
-
-	/**
-	 * @author oosmoxiecode
-	 * @author Mugen87 / https://github.com/Mugen87
-	 *
-	 * based on http://www.blackpawn.com/texts/pqtorus/
-	 */
-
-	// TorusKnotGeometry
-
-	function TorusKnotGeometry( radius, tube, tubularSegments, radialSegments, p, q, heightScale ) {
-
-		Geometry.call( this );
-
-		this.type = 'TorusKnotGeometry';
-
-		this.parameters = {
-			radius: radius,
-			tube: tube,
-			tubularSegments: tubularSegments,
-			radialSegments: radialSegments,
-			p: p,
-			q: q
-		};
-
-		if ( heightScale !== undefined ) console.warn( 'THREE.TorusKnotGeometry: heightScale has been deprecated. Use .scale( x, y, z ) instead.' );
-
-		this.fromBufferGeometry( new TorusKnotBufferGeometry( radius, tube, tubularSegments, radialSegments, p, q ) );
-		this.mergeVertices();
-
-	}
-
-	TorusKnotGeometry.prototype = Object.create( Geometry.prototype );
-	TorusKnotGeometry.prototype.constructor = TorusKnotGeometry;
-
-	// TorusKnotBufferGeometry
-
-	function TorusKnotBufferGeometry( radius, tube, tubularSegments, radialSegments, p, q ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'TorusKnotBufferGeometry';
-
-		this.parameters = {
-			radius: radius,
-			tube: tube,
-			tubularSegments: tubularSegments,
-			radialSegments: radialSegments,
-			p: p,
-			q: q
-		};
-
-		radius = radius || 1;
-		tube = tube || 0.4;
-		tubularSegments = Math.floor( tubularSegments ) || 64;
-		radialSegments = Math.floor( radialSegments ) || 8;
-		p = p || 2;
-		q = q || 3;
-
-		// buffers
-
-		var indices = [];
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
-
-		// helper variables
-
-		var i, j;
-
-		var vertex = new Vector3();
-		var normal = new Vector3();
-
-		var P1 = new Vector3();
-		var P2 = new Vector3();
-
-		var B = new Vector3();
-		var T = new Vector3();
-		var N = new Vector3();
-
-		// generate vertices, normals and uvs
-
-		for ( i = 0; i <= tubularSegments; ++ i ) {
-
-			// the radian "u" is used to calculate the position on the torus curve of the current tubular segement
-
-			var u = i / tubularSegments * p * Math.PI * 2;
-
-			// now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.
-			// these points are used to create a special "coordinate space", which is necessary to calculate the correct vertex positions
-
-			calculatePositionOnCurve( u, p, q, radius, P1 );
-			calculatePositionOnCurve( u + 0.01, p, q, radius, P2 );
-
-			// calculate orthonormal basis
-
-			T.subVectors( P2, P1 );
-			N.addVectors( P2, P1 );
-			B.crossVectors( T, N );
-			N.crossVectors( B, T );
-
-			// normalize B, N. T can be ignored, we don't use it
-
-			B.normalize();
-			N.normalize();
-
-			for ( j = 0; j <= radialSegments; ++ j ) {
-
-				// now calculate the vertices. they are nothing more than an extrusion of the torus curve.
-				// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.
-
-				var v = j / radialSegments * Math.PI * 2;
-				var cx = - tube * Math.cos( v );
-				var cy = tube * Math.sin( v );
-
-				// now calculate the final vertex position.
-				// first we orient the extrusion with our basis vectos, then we add it to the current position on the curve
-
-				vertex.x = P1.x + ( cx * N.x + cy * B.x );
-				vertex.y = P1.y + ( cx * N.y + cy * B.y );
-				vertex.z = P1.z + ( cx * N.z + cy * B.z );
-
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-				// normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)
-
-				normal.subVectors( vertex, P1 ).normalize();
-
-				normals.push( normal.x, normal.y, normal.z );
-
-				// uv
-
-				uvs.push( i / tubularSegments );
-				uvs.push( j / radialSegments );
-
-			}
-
-		}
-
-		// generate indices
-
-		for ( j = 1; j <= tubularSegments; j ++ ) {
-
-			for ( i = 1; i <= radialSegments; i ++ ) {
-
-				// indices
-
-				var a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
-				var b = ( radialSegments + 1 ) * j + ( i - 1 );
-				var c = ( radialSegments + 1 ) * j + i;
-				var d = ( radialSegments + 1 ) * ( j - 1 ) + i;
-
-				// faces
-
-				indices.push( a, b, d );
-				indices.push( b, c, d );
-
-			}
-
-		}
-
-		// build geometry
-
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
-
-		// this function calculates the current position on the torus curve
-
-		function calculatePositionOnCurve( u, p, q, radius, position ) {
-
-			var cu = Math.cos( u );
-			var su = Math.sin( u );
-			var quOverP = q / p * u;
-			var cs = Math.cos( quOverP );
-
-			position.x = radius * ( 2 + cs ) * 0.5 * cu;
-			position.y = radius * ( 2 + cs ) * su * 0.5;
-			position.z = radius * Math.sin( quOverP ) * 0.5;
-
-		}
-
-	}
-
-	TorusKnotBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	TorusKnotBufferGeometry.prototype.constructor = TorusKnotBufferGeometry;
-
-	/**
-	 * @author oosmoxiecode
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// TorusGeometry
-
-	function TorusGeometry( radius, tube, radialSegments, tubularSegments, arc ) {
-
-		Geometry.call( this );
-
-		this.type = 'TorusGeometry';
-
-		this.parameters = {
-			radius: radius,
-			tube: tube,
-			radialSegments: radialSegments,
-			tubularSegments: tubularSegments,
-			arc: arc
-		};
-
-		this.fromBufferGeometry( new TorusBufferGeometry( radius, tube, radialSegments, tubularSegments, arc ) );
-		this.mergeVertices();
-
-	}
-
-	TorusGeometry.prototype = Object.create( Geometry.prototype );
-	TorusGeometry.prototype.constructor = TorusGeometry;
-
-	// TorusBufferGeometry
-
-	function TorusBufferGeometry( radius, tube, radialSegments, tubularSegments, arc ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'TorusBufferGeometry';
-
-		this.parameters = {
-			radius: radius,
-			tube: tube,
-			radialSegments: radialSegments,
-			tubularSegments: tubularSegments,
-			arc: arc
-		};
-
-		radius = radius || 1;
-		tube = tube || 0.4;
-		radialSegments = Math.floor( radialSegments ) || 8;
-		tubularSegments = Math.floor( tubularSegments ) || 6;
-		arc = arc || Math.PI * 2;
-
-		// buffers
-
-		var indices = [];
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
-
-		// helper variables
-
-		var center = new Vector3();
-		var vertex = new Vector3();
-		var normal = new Vector3();
-
-		var j, i;
-
-		// generate vertices, normals and uvs
-
-		for ( j = 0; j <= radialSegments; j ++ ) {
-
-			for ( i = 0; i <= tubularSegments; i ++ ) {
-
-				var u = i / tubularSegments * arc;
-				var v = j / radialSegments * Math.PI * 2;
-
-				// vertex
-
-				vertex.x = ( radius + tube * Math.cos( v ) ) * Math.cos( u );
-				vertex.y = ( radius + tube * Math.cos( v ) ) * Math.sin( u );
-				vertex.z = tube * Math.sin( v );
-
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-				// normal
-
-				center.x = radius * Math.cos( u );
-				center.y = radius * Math.sin( u );
-				normal.subVectors( vertex, center ).normalize();
-
-				normals.push( normal.x, normal.y, normal.z );
-
-				// uv
-
-				uvs.push( i / tubularSegments );
-				uvs.push( j / radialSegments );
-
-			}
-
-		}
-
-		// generate indices
-
-		for ( j = 1; j <= radialSegments; j ++ ) {
-
-			for ( i = 1; i <= tubularSegments; i ++ ) {
-
-				// indices
-
-				var a = ( tubularSegments + 1 ) * j + i - 1;
-				var b = ( tubularSegments + 1 ) * ( j - 1 ) + i - 1;
-				var c = ( tubularSegments + 1 ) * ( j - 1 ) + i;
-				var d = ( tubularSegments + 1 ) * j + i;
-
-				// faces
-
-				indices.push( a, b, d );
-				indices.push( b, c, d );
-
-			}
-
-		}
-
-		// build geometry
-
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
-
-	}
-
-	TorusBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	TorusBufferGeometry.prototype.constructor = TorusBufferGeometry;
-
-	/**
-	 * @author Mugen87 / https://github.com/Mugen87
-	 * Port from https://github.com/mapbox/earcut (v2.1.2)
-	 */
-
-	var Earcut = {
-
-		triangulate: function ( data, holeIndices, dim ) {
-
-			dim = dim || 2;
-
-			var hasHoles = holeIndices && holeIndices.length,
-				outerLen = hasHoles ? holeIndices[ 0 ] * dim : data.length,
-				outerNode = linkedList( data, 0, outerLen, dim, true ),
-				triangles = [];
-
-			if ( ! outerNode ) return triangles;
-
-			var minX, minY, maxX, maxY, x, y, invSize;
-
-			if ( hasHoles ) outerNode = eliminateHoles( data, holeIndices, outerNode, dim );
-
-			// if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox
-
-			if ( data.length > 80 * dim ) {
-
-				minX = maxX = data[ 0 ];
-				minY = maxY = data[ 1 ];
-
-				for ( var i = dim; i < outerLen; i += dim ) {
-
-					x = data[ i ];
-					y = data[ i + 1 ];
-					if ( x < minX ) minX = x;
-					if ( y < minY ) minY = y;
-					if ( x > maxX ) maxX = x;
-					if ( y > maxY ) maxY = y;
-
-				}
-
-				// minX, minY and invSize are later used to transform coords into integers for z-order calculation
-
-				invSize = Math.max( maxX - minX, maxY - minY );
-				invSize = invSize !== 0 ? 1 / invSize : 0;
-
-			}
-
-			earcutLinked( outerNode, triangles, dim, minX, minY, invSize );
-
-			return triangles;
-
-		}
-
-	};
-
-	// create a circular doubly linked list from polygon points in the specified winding order
-
-	function linkedList( data, start, end, dim, clockwise ) {
-
-		var i, last;
-
-		if ( clockwise === ( signedArea( data, start, end, dim ) > 0 ) ) {
-
-			for ( i = start; i < end; i += dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );
-
-		} else {
-
-			for ( i = end - dim; i >= start; i -= dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );
-
-		}
-
-		if ( last && equals( last, last.next ) ) {
-
-			removeNode( last );
-			last = last.next;
-
-		}
-
-		return last;
-
-	}
-
-	// eliminate colinear or duplicate points
-
-	function filterPoints( start, end ) {
-
-		if ( ! start ) return start;
-		if ( ! end ) end = start;
-
-		var p = start, again;
-
-		do {
-
-			again = false;
-
-			if ( ! p.steiner && ( equals( p, p.next ) || area( p.prev, p, p.next ) === 0 ) ) {
-
-				removeNode( p );
-				p = end = p.prev;
-				if ( p === p.next ) break;
-				again = true;
-
-			} else {
-
-				p = p.next;
-
-			}
-
-		} while ( again || p !== end );
-
-		return end;
-
-	}
-
-	// main ear slicing loop which triangulates a polygon (given as a linked list)
-
-	function earcutLinked( ear, triangles, dim, minX, minY, invSize, pass ) {
-
-		if ( ! ear ) return;
-
-		// interlink polygon nodes in z-order
-
-		if ( ! pass && invSize ) indexCurve( ear, minX, minY, invSize );
-
-		var stop = ear, prev, next;
-
-		// iterate through ears, slicing them one by one
-
-		while ( ear.prev !== ear.next ) {
-
-			prev = ear.prev;
-			next = ear.next;
-
-			if ( invSize ? isEarHashed( ear, minX, minY, invSize ) : isEar( ear ) ) {
-
-				// cut off the triangle
-				triangles.push( prev.i / dim );
-				triangles.push( ear.i / dim );
-				triangles.push( next.i / dim );
-
-				removeNode( ear );
-
-				// skipping the next vertice leads to less sliver triangles
-				ear = next.next;
-				stop = next.next;
-
-				continue;
-
-			}
-
-			ear = next;
-
-			// if we looped through the whole remaining polygon and can't find any more ears
-
-			if ( ear === stop ) {
-
-				// try filtering points and slicing again
-
-				if ( ! pass ) {
-
-					earcutLinked( filterPoints( ear ), triangles, dim, minX, minY, invSize, 1 );
-
-					// if this didn't work, try curing all small self-intersections locally
-
-				} else if ( pass === 1 ) {
-
-					ear = cureLocalIntersections( ear, triangles, dim );
-					earcutLinked( ear, triangles, dim, minX, minY, invSize, 2 );
-
-				// as a last resort, try splitting the remaining polygon into two
-
-				} else if ( pass === 2 ) {
-
-					splitEarcut( ear, triangles, dim, minX, minY, invSize );
-
-				}
-
-				break;
-
-			}
-
-		}
-
-	}
-
-	// check whether a polygon node forms a valid ear with adjacent nodes
-
-	function isEar( ear ) {
-
-		var a = ear.prev,
-			b = ear,
-			c = ear.next;
-
-		if ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear
-
-		// now make sure we don't have other points inside the potential ear
-		var p = ear.next.next;
-
-		while ( p !== ear.prev ) {
-
-			if ( pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) && area( p.prev, p, p.next ) >= 0 ) {
-
-				return false;
-
-			}
-
-			p = p.next;
-
-		}
-
-		return true;
-
-	}
-
-	function isEarHashed( ear, minX, minY, invSize ) {
-
-		var a = ear.prev,
-			b = ear,
-			c = ear.next;
-
-		if ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear
-
-		// triangle bbox; min & max are calculated like this for speed
-
-		var minTX = a.x < b.x ? ( a.x < c.x ? a.x : c.x ) : ( b.x < c.x ? b.x : c.x ),
-			minTY = a.y < b.y ? ( a.y < c.y ? a.y : c.y ) : ( b.y < c.y ? b.y : c.y ),
-			maxTX = a.x > b.x ? ( a.x > c.x ? a.x : c.x ) : ( b.x > c.x ? b.x : c.x ),
-			maxTY = a.y > b.y ? ( a.y > c.y ? a.y : c.y ) : ( b.y > c.y ? b.y : c.y );
-
-		// z-order range for the current triangle bbox;
-
-		var minZ = zOrder( minTX, minTY, minX, minY, invSize ),
-			maxZ = zOrder( maxTX, maxTY, minX, minY, invSize );
-
-		// first look for points inside the triangle in increasing z-order
-
-		var p = ear.nextZ;
-
-		while ( p && p.z <= maxZ ) {
-
-			if ( p !== ear.prev && p !== ear.next &&
-					pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
-					area( p.prev, p, p.next ) >= 0 ) return false;
-			p = p.nextZ;
-
-		}
-
-		// then look for points in decreasing z-order
-
-		p = ear.prevZ;
-
-		while ( p && p.z >= minZ ) {
-
-			if ( p !== ear.prev && p !== ear.next &&
-					pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
-					area( p.prev, p, p.next ) >= 0 ) return false;
-
-			p = p.prevZ;
-
-		}
-
-		return true;
-
-	}
-
-	// go through all polygon nodes and cure small local self-intersections
-
-	function cureLocalIntersections( start, triangles, dim ) {
-
-		var p = start;
-
-		do {
-
-			var a = p.prev, b = p.next.next;
-
-			if ( ! equals( a, b ) && intersects( a, p, p.next, b ) && locallyInside( a, b ) && locallyInside( b, a ) ) {
-
-				triangles.push( a.i / dim );
-				triangles.push( p.i / dim );
-				triangles.push( b.i / dim );
-
-				// remove two nodes involved
-
-				removeNode( p );
-				removeNode( p.next );
-
-				p = start = b;
-
-			}
-
-			p = p.next;
-
-		} while ( p !== start );
-
-		return p;
-
-	}
-
-	// try splitting polygon into two and triangulate them independently
-
-	function splitEarcut( start, triangles, dim, minX, minY, invSize ) {
-
-		// look for a valid diagonal that divides the polygon into two
-
-		var a = start;
-
-		do {
-
-			var b = a.next.next;
-
-			while ( b !== a.prev ) {
-
-				if ( a.i !== b.i && isValidDiagonal( a, b ) ) {
-
-					// split the polygon in two by the diagonal
-
-					var c = splitPolygon( a, b );
-
-					// filter colinear points around the cuts
-
-					a = filterPoints( a, a.next );
-					c = filterPoints( c, c.next );
-
-					// run earcut on each half
-
-					earcutLinked( a, triangles, dim, minX, minY, invSize );
-					earcutLinked( c, triangles, dim, minX, minY, invSize );
-					return;
-
-				}
-
-				b = b.next;
-
-			}
-
-			a = a.next;
-
-		} while ( a !== start );
-
-	}
-
-	// link every hole into the outer loop, producing a single-ring polygon without holes
-
-	function eliminateHoles( data, holeIndices, outerNode, dim ) {
-
-		var queue = [], i, len, start, end, list;
-
-		for ( i = 0, len = holeIndices.length; i < len; i ++ ) {
-
-			start = holeIndices[ i ] * dim;
-			end = i < len - 1 ? holeIndices[ i + 1 ] * dim : data.length;
-			list = linkedList( data, start, end, dim, false );
-			if ( list === list.next ) list.steiner = true;
-			queue.push( getLeftmost( list ) );
-
-		}
-
-		queue.sort( compareX );
-
-		// process holes from left to right
-
-		for ( i = 0; i < queue.length; i ++ ) {
-
-			eliminateHole( queue[ i ], outerNode );
-			outerNode = filterPoints( outerNode, outerNode.next );
-
-		}
-
-		return outerNode;
-
-	}
-
-	function compareX( a, b ) {
-
-		return a.x - b.x;
-
-	}
-
-	// find a bridge between vertices that connects hole with an outer ring and and link it
-
-	function eliminateHole( hole, outerNode ) {
-
-		outerNode = findHoleBridge( hole, outerNode );
-
-		if ( outerNode ) {
-
-			var b = splitPolygon( outerNode, hole );
-
-			filterPoints( b, b.next );
-
-		}
-
-	}
-
-	// David Eberly's algorithm for finding a bridge between hole and outer polygon
-
-	function findHoleBridge( hole, outerNode ) {
-
-		var p = outerNode,
-			hx = hole.x,
-			hy = hole.y,
-			qx = - Infinity,
-			m;
-
-		// find a segment intersected by a ray from the hole's leftmost point to the left;
-		// segment's endpoint with lesser x will be potential connection point
-
-		do {
-
-			if ( hy <= p.y && hy >= p.next.y && p.next.y !== p.y ) {
-
-				var x = p.x + ( hy - p.y ) * ( p.next.x - p.x ) / ( p.next.y - p.y );
-
-				if ( x <= hx && x > qx ) {
-
-					qx = x;
-
-					if ( x === hx ) {
-
-						if ( hy === p.y ) return p;
-						if ( hy === p.next.y ) return p.next;
-
-					}
-
-					m = p.x < p.next.x ? p : p.next;
-
-				}
-
-			}
-
-			p = p.next;
-
-		} while ( p !== outerNode );
-
-		if ( ! m ) return null;
-
-		if ( hx === qx ) return m.prev; // hole touches outer segment; pick lower endpoint
-
-		// look for points inside the triangle of hole point, segment intersection and endpoint;
-		// if there are no points found, we have a valid connection;
-		// otherwise choose the point of the minimum angle with the ray as connection point
-
-		var stop = m,
-			mx = m.x,
-			my = m.y,
-			tanMin = Infinity,
-			tan;
-
-		p = m.next;
-
-		while ( p !== stop ) {
-
-			if ( hx >= p.x && p.x >= mx && hx !== p.x &&
-							pointInTriangle( hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y ) ) {
-
-				tan = Math.abs( hy - p.y ) / ( hx - p.x ); // tangential
-
-				if ( ( tan < tanMin || ( tan === tanMin && p.x > m.x ) ) && locallyInside( p, hole ) ) {
-
-					m = p;
-					tanMin = tan;
-
-				}
-
-			}
-
-			p = p.next;
-
-		}
-
-		return m;
-
-	}
-
-	// interlink polygon nodes in z-order
-
-	function indexCurve( start, minX, minY, invSize ) {
-
-		var p = start;
-
-		do {
-
-			if ( p.z === null ) p.z = zOrder( p.x, p.y, minX, minY, invSize );
-			p.prevZ = p.prev;
-			p.nextZ = p.next;
-			p = p.next;
-
-		} while ( p !== start );
-
-		p.prevZ.nextZ = null;
-		p.prevZ = null;
-
-		sortLinked( p );
-
-	}
-
-	// Simon Tatham's linked list merge sort algorithm
-	// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html
-
-	function sortLinked( list ) {
-
-		var i, p, q, e, tail, numMerges, pSize, qSize, inSize = 1;
-
-		do {
-
-			p = list;
-			list = null;
-			tail = null;
-			numMerges = 0;
-
-			while ( p ) {
-
-				numMerges ++;
-				q = p;
-				pSize = 0;
-
-				for ( i = 0; i < inSize; i ++ ) {
-
-					pSize ++;
-					q = q.nextZ;
-					if ( ! q ) break;
-
-				}
-
-				qSize = inSize;
-
-				while ( pSize > 0 || ( qSize > 0 && q ) ) {
-
-					if ( pSize !== 0 && ( qSize === 0 || ! q || p.z <= q.z ) ) {
-
-						e = p;
-						p = p.nextZ;
-						pSize --;
-
-					} else {
-
-						e = q;
-						q = q.nextZ;
-						qSize --;
-
-					}
-
-					if ( tail ) tail.nextZ = e;
-					else list = e;
-
-					e.prevZ = tail;
-					tail = e;
-
-				}
-
-				p = q;
-
-			}
-
-			tail.nextZ = null;
-			inSize *= 2;
-
-		} while ( numMerges > 1 );
-
-		return list;
-
-	}
-
-	// z-order of a point given coords and inverse of the longer side of data bbox
-
-	function zOrder( x, y, minX, minY, invSize ) {
-
-		// coords are transformed into non-negative 15-bit integer range
-
-		x = 32767 * ( x - minX ) * invSize;
-		y = 32767 * ( y - minY ) * invSize;
-
-		x = ( x | ( x << 8 ) ) & 0x00FF00FF;
-		x = ( x | ( x << 4 ) ) & 0x0F0F0F0F;
-		x = ( x | ( x << 2 ) ) & 0x33333333;
-		x = ( x | ( x << 1 ) ) & 0x55555555;
-
-		y = ( y | ( y << 8 ) ) & 0x00FF00FF;
-		y = ( y | ( y << 4 ) ) & 0x0F0F0F0F;
-		y = ( y | ( y << 2 ) ) & 0x33333333;
-		y = ( y | ( y << 1 ) ) & 0x55555555;
-
-		return x | ( y << 1 );
-
-	}
-
-	// find the leftmost node of a polygon ring
-
-	function getLeftmost( start ) {
-
-		var p = start, leftmost = start;
-
-		do {
-
-			if ( p.x < leftmost.x ) leftmost = p;
-			p = p.next;
-
-		} while ( p !== start );
-
-		return leftmost;
-
-	}
-
-	// check if a point lies within a convex triangle
-
-	function pointInTriangle( ax, ay, bx, by, cx, cy, px, py ) {
-
-		return ( cx - px ) * ( ay - py ) - ( ax - px ) * ( cy - py ) >= 0 &&
-		 ( ax - px ) * ( by - py ) - ( bx - px ) * ( ay - py ) >= 0 &&
-		 ( bx - px ) * ( cy - py ) - ( cx - px ) * ( by - py ) >= 0;
-
-	}
-
-	// check if a diagonal between two polygon nodes is valid (lies in polygon interior)
-
-	function isValidDiagonal( a, b ) {
-
-		return a.next.i !== b.i && a.prev.i !== b.i && ! intersectsPolygon( a, b ) &&
-			locallyInside( a, b ) && locallyInside( b, a ) && middleInside( a, b );
-
-	}
-
-	// signed area of a triangle
-
-	function area( p, q, r ) {
-
-		return ( q.y - p.y ) * ( r.x - q.x ) - ( q.x - p.x ) * ( r.y - q.y );
-
-	}
-
-	// check if two points are equal
-
-	function equals( p1, p2 ) {
-
-		return p1.x === p2.x && p1.y === p2.y;
-
-	}
-
-	// check if two segments intersect
-
-	function intersects( p1, q1, p2, q2 ) {
-
-		if ( ( equals( p1, q1 ) && equals( p2, q2 ) ) ||
-				( equals( p1, q2 ) && equals( p2, q1 ) ) ) return true;
-
-		return area( p1, q1, p2 ) > 0 !== area( p1, q1, q2 ) > 0 &&
-					 area( p2, q2, p1 ) > 0 !== area( p2, q2, q1 ) > 0;
-
-	}
-
-	// check if a polygon diagonal intersects any polygon segments
-
-	function intersectsPolygon( a, b ) {
-
-		var p = a;
-
-		do {
-
-			if ( p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&
-							intersects( p, p.next, a, b ) ) {
-
-				return true;
-
-			}
-
-			p = p.next;
-
-		} while ( p !== a );
-
-		return false;
-
-	}
-
-	// check if a polygon diagonal is locally inside the polygon
-
-	function locallyInside( a, b ) {
-
-		return area( a.prev, a, a.next ) < 0 ?
-			area( a, b, a.next ) >= 0 && area( a, a.prev, b ) >= 0 :
-			area( a, b, a.prev ) < 0 || area( a, a.next, b ) < 0;
-
-	}
-
-	// check if the middle point of a polygon diagonal is inside the polygon
-
-	function middleInside( a, b ) {
-
-		var p = a,
-			inside = false,
-			px = ( a.x + b.x ) / 2,
-			py = ( a.y + b.y ) / 2;
-
-		do {
-
-			if ( ( ( p.y > py ) !== ( p.next.y > py ) ) && p.next.y !== p.y &&
-							( px < ( p.next.x - p.x ) * ( py - p.y ) / ( p.next.y - p.y ) + p.x ) ) {
-
-				inside = ! inside;
-
-			}
-
-			p = p.next;
-
-		} while ( p !== a );
-
-		return inside;
-
-	}
-
-	// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;
-	// if one belongs to the outer ring and another to a hole, it merges it into a single ring
-
-	function splitPolygon( a, b ) {
-
-		var a2 = new Node( a.i, a.x, a.y ),
-			b2 = new Node( b.i, b.x, b.y ),
-			an = a.next,
-			bp = b.prev;
-
-		a.next = b;
-		b.prev = a;
-
-		a2.next = an;
-		an.prev = a2;
-
-		b2.next = a2;
-		a2.prev = b2;
-
-		bp.next = b2;
-		b2.prev = bp;
-
-		return b2;
-
-	}
-
-	// create a node and optionally link it with previous one (in a circular doubly linked list)
-
-	function insertNode( i, x, y, last ) {
-
-		var p = new Node( i, x, y );
-
-		if ( ! last ) {
-
-			p.prev = p;
-			p.next = p;
-
-		} else {
-
-			p.next = last.next;
-			p.prev = last;
-			last.next.prev = p;
-			last.next = p;
-
-		}
-
-		return p;
-
-	}
-
-	function removeNode( p ) {
-
-		p.next.prev = p.prev;
-		p.prev.next = p.next;
-
-		if ( p.prevZ ) p.prevZ.nextZ = p.nextZ;
-		if ( p.nextZ ) p.nextZ.prevZ = p.prevZ;
-
-	}
-
-	function Node( i, x, y ) {
-
-		// vertice index in coordinates array
-		this.i = i;
-
-		// vertex coordinates
-		this.x = x;
-		this.y = y;
-
-		// previous and next vertice nodes in a polygon ring
-		this.prev = null;
-		this.next = null;
-
-		// z-order curve value
-		this.z = null;
-
-		// previous and next nodes in z-order
-		this.prevZ = null;
-		this.nextZ = null;
-
-		// indicates whether this is a steiner point
-		this.steiner = false;
-
-	}
-
-	function signedArea( data, start, end, dim ) {
-
-		var sum = 0;
-
-		for ( var i = start, j = end - dim; i < end; i += dim ) {
-
-			sum += ( data[ j ] - data[ i ] ) * ( data[ i + 1 ] + data[ j + 1 ] );
-			j = i;
-
-		}
-
-		return sum;
-
-	}
-
-	/**
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 */
-
-	var ShapeUtils = {
-
-		// calculate area of the contour polygon
-
-		area: function ( contour ) {
-
-			var n = contour.length;
-			var a = 0.0;
-
-			for ( var p = n - 1, q = 0; q < n; p = q ++ ) {
-
-				a += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;
-
-			}
-
-			return a * 0.5;
-
-		},
-
-		isClockWise: function ( pts ) {
-
-			return ShapeUtils.area( pts ) < 0;
-
-		},
-
-		triangulateShape: function ( contour, holes ) {
-
-			var vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]
-			var holeIndices = []; // array of hole indices
-			var faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]
-
-			removeDupEndPts( contour );
-			addContour( vertices, contour );
-
-			//
-
-			var holeIndex = contour.length;
-
-			holes.forEach( removeDupEndPts );
-
-			for ( var i = 0; i < holes.length; i ++ ) {
-
-				holeIndices.push( holeIndex );
-				holeIndex += holes[ i ].length;
-				addContour( vertices, holes[ i ] );
-
-			}
-
-			//
-
-			var triangles = Earcut.triangulate( vertices, holeIndices );
-
-			//
-
-			for ( var i = 0; i < triangles.length; i += 3 ) {
-
-				faces.push( triangles.slice( i, i + 3 ) );
-
-			}
-
-			return faces;
-
-		}
-
-	};
-
-	function removeDupEndPts( points ) {
-
-		var l = points.length;
-
-		if ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {
-
-			points.pop();
-
-		}
-
-	}
-
-	function addContour( vertices, contour ) {
-
-		for ( var i = 0; i < contour.length; i ++ ) {
-
-			vertices.push( contour[ i ].x );
-			vertices.push( contour[ i ].y );
-
-		}
-
-	}
-
-	/**
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 *
-	 * Creates extruded geometry from a path shape.
-	 *
-	 * parameters = {
-	 *
-	 *  curveSegments: <int>, // number of points on the curves
-	 *  steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too
-	 *  amount: <int>, // Depth to extrude the shape
-	 *
-	 *  bevelEnabled: <bool>, // turn on bevel
-	 *  bevelThickness: <float>, // how deep into the original shape bevel goes
-	 *  bevelSize: <float>, // how far from shape outline is bevel
-	 *  bevelSegments: <int>, // number of bevel layers
-	 *
-	 *  extrudePath: <THREE.Curve> // curve to extrude shape along
-	 *  frames: <Object> // containing arrays of tangents, normals, binormals
-	 *
-	 *  UVGenerator: <Object> // object that provides UV generator functions
-	 *
-	 * }
-	 */
-
-	// ExtrudeGeometry
-
-	function ExtrudeGeometry( shapes, options ) {
-
-		Geometry.call( this );
-
-		this.type = 'ExtrudeGeometry';
-
-		this.parameters = {
-			shapes: shapes,
-			options: options
-		};
-
-		this.fromBufferGeometry( new ExtrudeBufferGeometry( shapes, options ) );
-		this.mergeVertices();
-
-	}
-
-	ExtrudeGeometry.prototype = Object.create( Geometry.prototype );
-	ExtrudeGeometry.prototype.constructor = ExtrudeGeometry;
-
-	// ExtrudeBufferGeometry
-
-	function ExtrudeBufferGeometry( shapes, options ) {
-
-		if ( typeof ( shapes ) === "undefined" ) {
-
-			return;
-
-		}
-
-		BufferGeometry.call( this );
-
-		this.type = 'ExtrudeBufferGeometry';
-
-		shapes = Array.isArray( shapes ) ? shapes : [ shapes ];
-
-		this.addShapeList( shapes, options );
-
-		this.computeVertexNormals();
-
-		// can't really use automatic vertex normals
-		// as then front and back sides get smoothed too
-		// should do separate smoothing just for sides
-
-		//this.computeVertexNormals();
-
-		//console.log( "took", ( Date.now() - startTime ) );
-
-	}
-
-	ExtrudeBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	ExtrudeBufferGeometry.prototype.constructor = ExtrudeBufferGeometry;
-
-	ExtrudeBufferGeometry.prototype.getArrays = function () {
-
-		var positionAttribute = this.getAttribute( "position" );
-		var verticesArray = positionAttribute ? Array.prototype.slice.call( positionAttribute.array ) : [];
-
-		var uvAttribute = this.getAttribute( "uv" );
-		var uvArray = uvAttribute ? Array.prototype.slice.call( uvAttribute.array ) : [];
-
-		var IndexAttribute = this.index;
-		var indicesArray = IndexAttribute ? Array.prototype.slice.call( IndexAttribute.array ) : [];
-
-		return {
-			position: verticesArray,
-			uv: uvArray,
-			index: indicesArray
-		};
-
-	};
-
-	ExtrudeBufferGeometry.prototype.addShapeList = function ( shapes, options ) {
-
-		var sl = shapes.length;
-		options.arrays = this.getArrays();
-
-		for ( var s = 0; s < sl; s ++ ) {
-
-			var shape = shapes[ s ];
-			this.addShape( shape, options );
-
-		}
-
-		this.setIndex( options.arrays.index );
-		this.addAttribute( 'position', new Float32BufferAttribute( options.arrays.position, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( options.arrays.uv, 2 ) );
-
-	};
-
-	ExtrudeBufferGeometry.prototype.addShape = function ( shape, options ) {
-
-		var arrays = options.arrays ? options.arrays : this.getArrays();
-		var verticesArray = arrays.position;
-		var indicesArray = arrays.index;
-		var uvArray = arrays.uv;
-
-		var placeholder = [];
-
-
-		var amount = options.amount !== undefined ? options.amount : 100;
-
-		var bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 6; // 10
-		var bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 2; // 8
-		var bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;
-
-		var bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true; // false
-
-		var curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;
-
-		var steps = options.steps !== undefined ? options.steps : 1;
-
-		var extrudePath = options.extrudePath;
-		var extrudePts, extrudeByPath = false;
-
-		// Use default WorldUVGenerator if no UV generators are specified.
-		var uvgen = options.UVGenerator !== undefined ? options.UVGenerator : ExtrudeGeometry.WorldUVGenerator;
-
-		var splineTube, binormal, normal, position2;
-		if ( extrudePath ) {
-
-			extrudePts = extrudePath.getSpacedPoints( steps );
-
-			extrudeByPath = true;
-			bevelEnabled = false; // bevels not supported for path extrusion
-
-			// SETUP TNB variables
-
-			// TODO1 - have a .isClosed in spline?
-
-			splineTube = options.frames !== undefined ? options.frames : extrudePath.computeFrenetFrames( steps, false );
-
-			// console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);
-
-			binormal = new Vector3();
-			normal = new Vector3();
-			position2 = new Vector3();
-
-		}
-
-		// Safeguards if bevels are not enabled
-
-		if ( ! bevelEnabled ) {
-
-			bevelSegments = 0;
-			bevelThickness = 0;
-			bevelSize = 0;
-
-		}
-
-		// Variables initialization
-
-		var ahole, h, hl; // looping of holes
-		var scope = this;
-
-		var shapePoints = shape.extractPoints( curveSegments );
-
-		var vertices = shapePoints.shape;
-		var holes = shapePoints.holes;
-
-		var reverse = ! ShapeUtils.isClockWise( vertices );
-
-		if ( reverse ) {
-
-			vertices = vertices.reverse();
-
-			// Maybe we should also check if holes are in the opposite direction, just to be safe ...
-
-			for ( h = 0, hl = holes.length; h < hl; h ++ ) {
-
-				ahole = holes[ h ];
-
-				if ( ShapeUtils.isClockWise( ahole ) ) {
-
-					holes[ h ] = ahole.reverse();
-
-				}
-
-			}
-
-		}
-
-
-		var faces = ShapeUtils.triangulateShape( vertices, holes );
-
-		/* Vertices */
-
-		var contour = vertices; // vertices has all points but contour has only points of circumference
-
-		for ( h = 0, hl = holes.length; h < hl; h ++ ) {
-
-			ahole = holes[ h ];
-
-			vertices = vertices.concat( ahole );
-
-		}
-
-
-		function scalePt2( pt, vec, size ) {
-
-			if ( ! vec ) console.error( "THREE.ExtrudeGeometry: vec does not exist" );
-
-			return vec.clone().multiplyScalar( size ).add( pt );
-
-		}
-
-		var b, bs, t, z,
-			vert, vlen = vertices.length,
-			face, flen = faces.length;
-
-
-		// Find directions for point movement
-
-
-		function getBevelVec( inPt, inPrev, inNext ) {
-
-			// computes for inPt the corresponding point inPt' on a new contour
-			//   shifted by 1 unit (length of normalized vector) to the left
-			// if we walk along contour clockwise, this new contour is outside the old one
-			//
-			// inPt' is the intersection of the two lines parallel to the two
-			//  adjacent edges of inPt at a distance of 1 unit on the left side.
-
-			var v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt
-
-			// good reading for geometry algorithms (here: line-line intersection)
-			// http://geomalgorithms.com/a05-_intersect-1.html
-
-			var v_prev_x = inPt.x - inPrev.x,
-				v_prev_y = inPt.y - inPrev.y;
-			var v_next_x = inNext.x - inPt.x,
-				v_next_y = inNext.y - inPt.y;
-
-			var v_prev_lensq = ( v_prev_x * v_prev_x + v_prev_y * v_prev_y );
-
-			// check for collinear edges
-			var collinear0 = ( v_prev_x * v_next_y - v_prev_y * v_next_x );
-
-			if ( Math.abs( collinear0 ) > Number.EPSILON ) {
-
-				// not collinear
-
-				// length of vectors for normalizing
-
-				var v_prev_len = Math.sqrt( v_prev_lensq );
-				var v_next_len = Math.sqrt( v_next_x * v_next_x + v_next_y * v_next_y );
-
-				// shift adjacent points by unit vectors to the left
-
-				var ptPrevShift_x = ( inPrev.x - v_prev_y / v_prev_len );
-				var ptPrevShift_y = ( inPrev.y + v_prev_x / v_prev_len );
-
-				var ptNextShift_x = ( inNext.x - v_next_y / v_next_len );
-				var ptNextShift_y = ( inNext.y + v_next_x / v_next_len );
-
-				// scaling factor for v_prev to intersection point
-
-				var sf = ( ( ptNextShift_x - ptPrevShift_x ) * v_next_y -
-						( ptNextShift_y - ptPrevShift_y ) * v_next_x ) /
-					( v_prev_x * v_next_y - v_prev_y * v_next_x );
-
-				// vector from inPt to intersection point
-
-				v_trans_x = ( ptPrevShift_x + v_prev_x * sf - inPt.x );
-				v_trans_y = ( ptPrevShift_y + v_prev_y * sf - inPt.y );
-
-				// Don't normalize!, otherwise sharp corners become ugly
-				//  but prevent crazy spikes
-				var v_trans_lensq = ( v_trans_x * v_trans_x + v_trans_y * v_trans_y );
-				if ( v_trans_lensq <= 2 ) {
-
-					return new Vector2( v_trans_x, v_trans_y );
-
-				} else {
-
-					shrink_by = Math.sqrt( v_trans_lensq / 2 );
-
-				}
-
-			} else {
-
-				// handle special case of collinear edges
-
-				var direction_eq = false; // assumes: opposite
-				if ( v_prev_x > Number.EPSILON ) {
-
-					if ( v_next_x > Number.EPSILON ) {
-
-						direction_eq = true;
-
-					}
-
-				} else {
-
-					if ( v_prev_x < - Number.EPSILON ) {
-
-						if ( v_next_x < - Number.EPSILON ) {
-
-							direction_eq = true;
-
-						}
-
-					} else {
-
-						if ( Math.sign( v_prev_y ) === Math.sign( v_next_y ) ) {
-
-							direction_eq = true;
-
-						}
-
-					}
-
-				}
-
-				if ( direction_eq ) {
-
-					// console.log("Warning: lines are a straight sequence");
-					v_trans_x = - v_prev_y;
-					v_trans_y = v_prev_x;
-					shrink_by = Math.sqrt( v_prev_lensq );
-
-				} else {
-
-					// console.log("Warning: lines are a straight spike");
-					v_trans_x = v_prev_x;
-					v_trans_y = v_prev_y;
-					shrink_by = Math.sqrt( v_prev_lensq / 2 );
-
-				}
-
-			}
-
-			return new Vector2( v_trans_x / shrink_by, v_trans_y / shrink_by );
-
-		}
-
-
-		var contourMovements = [];
-
-		for ( var i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {
-
-			if ( j === il ) j = 0;
-			if ( k === il ) k = 0;
-
-			//  (j)---(i)---(k)
-			// console.log('i,j,k', i, j , k)
-
-			contourMovements[ i ] = getBevelVec( contour[ i ], contour[ j ], contour[ k ] );
-
-		}
-
-		var holesMovements = [],
-			oneHoleMovements, verticesMovements = contourMovements.concat();
-
-		for ( h = 0, hl = holes.length; h < hl; h ++ ) {
-
-			ahole = holes[ h ];
-
-			oneHoleMovements = [];
-
-			for ( i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {
-
-				if ( j === il ) j = 0;
-				if ( k === il ) k = 0;
-
-				//  (j)---(i)---(k)
-				oneHoleMovements[ i ] = getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );
-
-			}
-
-			holesMovements.push( oneHoleMovements );
-			verticesMovements = verticesMovements.concat( oneHoleMovements );
-
-		}
-
-
-		// Loop bevelSegments, 1 for the front, 1 for the back
-
-		for ( b = 0; b < bevelSegments; b ++ ) {
-
-			//for ( b = bevelSegments; b > 0; b -- ) {
-
-			t = b / bevelSegments;
-			z = bevelThickness * Math.cos( t * Math.PI / 2 );
-			bs = bevelSize * Math.sin( t * Math.PI / 2 );
-
-			// contract shape
-
-			for ( i = 0, il = contour.length; i < il; i ++ ) {
-
-				vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
-
-				v( vert.x, vert.y, - z );
-
-			}
-
-			// expand holes
-
-			for ( h = 0, hl = holes.length; h < hl; h ++ ) {
-
-				ahole = holes[ h ];
-				oneHoleMovements = holesMovements[ h ];
-
-				for ( i = 0, il = ahole.length; i < il; i ++ ) {
-
-					vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );
-
-					v( vert.x, vert.y, - z );
-
-				}
-
-			}
-
-		}
-
-		bs = bevelSize;
-
-		// Back facing vertices
-
-		for ( i = 0; i < vlen; i ++ ) {
-
-			vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];
-
-			if ( ! extrudeByPath ) {
-
-				v( vert.x, vert.y, 0 );
-
-			} else {
-
-				// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );
-
-				normal.copy( splineTube.normals[ 0 ] ).multiplyScalar( vert.x );
-				binormal.copy( splineTube.binormals[ 0 ] ).multiplyScalar( vert.y );
-
-				position2.copy( extrudePts[ 0 ] ).add( normal ).add( binormal );
-
-				v( position2.x, position2.y, position2.z );
-
-			}
-
-		}
-
-		// Add stepped vertices...
-		// Including front facing vertices
-
-		var s;
-
-		for ( s = 1; s <= steps; s ++ ) {
-
-			for ( i = 0; i < vlen; i ++ ) {
-
-				vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];
-
-				if ( ! extrudeByPath ) {
-
-					v( vert.x, vert.y, amount / steps * s );
-
-				} else {
-
-					// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );
-
-					normal.copy( splineTube.normals[ s ] ).multiplyScalar( vert.x );
-					binormal.copy( splineTube.binormals[ s ] ).multiplyScalar( vert.y );
-
-					position2.copy( extrudePts[ s ] ).add( normal ).add( binormal );
-
-					v( position2.x, position2.y, position2.z );
-
-				}
-
-			}
-
-		}
-
-
-		// Add bevel segments planes
-
-		//for ( b = 1; b <= bevelSegments; b ++ ) {
-		for ( b = bevelSegments - 1; b >= 0; b -- ) {
-
-			t = b / bevelSegments;
-			z = bevelThickness * Math.cos( t * Math.PI / 2 );
-			bs = bevelSize * Math.sin( t * Math.PI / 2 );
-
-			// contract shape
-
-			for ( i = 0, il = contour.length; i < il; i ++ ) {
-
-				vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
-				v( vert.x, vert.y, amount + z );
-
-			}
-
-			// expand holes
-
-			for ( h = 0, hl = holes.length; h < hl; h ++ ) {
-
-				ahole = holes[ h ];
-				oneHoleMovements = holesMovements[ h ];
-
-				for ( i = 0, il = ahole.length; i < il; i ++ ) {
-
-					vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );
-
-					if ( ! extrudeByPath ) {
-
-						v( vert.x, vert.y, amount + z );
-
-					} else {
-
-						v( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );
-
-					}
-
-				}
-
-			}
-
-		}
-
-		/* Faces */
-
-		// Top and bottom faces
-
-		buildLidFaces();
-
-		// Sides faces
-
-		buildSideFaces();
-
-
-		/////  Internal functions
-
-		function buildLidFaces() {
-
-			var start = verticesArray.length / 3;
-
-			if ( bevelEnabled ) {
-
-				var layer = 0; // steps + 1
-				var offset = vlen * layer;
-
-				// Bottom faces
-
-				for ( i = 0; i < flen; i ++ ) {
-
-					face = faces[ i ];
-					f3( face[ 2 ] + offset, face[ 1 ] + offset, face[ 0 ] + offset );
-
-				}
-
-				layer = steps + bevelSegments * 2;
-				offset = vlen * layer;
-
-				// Top faces
-
-				for ( i = 0; i < flen; i ++ ) {
-
-					face = faces[ i ];
-					f3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset );
-
-				}
-
-			} else {
-
-				// Bottom faces
-
-				for ( i = 0; i < flen; i ++ ) {
-
-					face = faces[ i ];
-					f3( face[ 2 ], face[ 1 ], face[ 0 ] );
-
-				}
-
-				// Top faces
-
-				for ( i = 0; i < flen; i ++ ) {
-
-					face = faces[ i ];
-					f3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps );
-
-				}
-
-			}
-
-			scope.addGroup( start, verticesArray.length / 3 - start, 0 );
-
-		}
-
-		// Create faces for the z-sides of the shape
-
-		function buildSideFaces() {
-
-			var start = verticesArray.length / 3;
-			var layeroffset = 0;
-			sidewalls( contour, layeroffset );
-			layeroffset += contour.length;
-
-			for ( h = 0, hl = holes.length; h < hl; h ++ ) {
-
-				ahole = holes[ h ];
-				sidewalls( ahole, layeroffset );
-
-				//, true
-				layeroffset += ahole.length;
-
-			}
-
-
-			scope.addGroup( start, verticesArray.length / 3 - start, 1 );
-
-
-		}
-
-		function sidewalls( contour, layeroffset ) {
-
-			var j, k;
-			i = contour.length;
-
-			while ( -- i >= 0 ) {
-
-				j = i;
-				k = i - 1;
-				if ( k < 0 ) k = contour.length - 1;
-
-				//console.log('b', i,j, i-1, k,vertices.length);
-
-				var s = 0,
-					sl = steps + bevelSegments * 2;
-
-				for ( s = 0; s < sl; s ++ ) {
-
-					var slen1 = vlen * s;
-					var slen2 = vlen * ( s + 1 );
-
-					var a = layeroffset + j + slen1,
-						b = layeroffset + k + slen1,
-						c = layeroffset + k + slen2,
-						d = layeroffset + j + slen2;
-
-					f4( a, b, c, d );
-
-				}
-
-			}
-
-		}
-
-		function v( x, y, z ) {
-
-			placeholder.push( x );
-			placeholder.push( y );
-			placeholder.push( z );
-
-		}
-
-
-		function f3( a, b, c ) {
-
-			addVertex( a );
-			addVertex( b );
-			addVertex( c );
-
-			var nextIndex = verticesArray.length / 3;
-			var uvs = uvgen.generateTopUV( scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1 );
-
-			addUV( uvs[ 0 ] );
-			addUV( uvs[ 1 ] );
-			addUV( uvs[ 2 ] );
-
-		}
-
-		function f4( a, b, c, d ) {
-
-			addVertex( a );
-			addVertex( b );
-			addVertex( d );
-
-			addVertex( b );
-			addVertex( c );
-			addVertex( d );
-
-
-			var nextIndex = verticesArray.length / 3;
-			var uvs = uvgen.generateSideWallUV( scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1 );
-
-			addUV( uvs[ 0 ] );
-			addUV( uvs[ 1 ] );
-			addUV( uvs[ 3 ] );
-
-			addUV( uvs[ 1 ] );
-			addUV( uvs[ 2 ] );
-			addUV( uvs[ 3 ] );
-
-		}
-
-		function addVertex( index ) {
-
-			indicesArray.push( verticesArray.length / 3 );
-			verticesArray.push( placeholder[ index * 3 + 0 ] );
-			verticesArray.push( placeholder[ index * 3 + 1 ] );
-			verticesArray.push( placeholder[ index * 3 + 2 ] );
-
-		}
-
-
-		function addUV( vector2 ) {
-
-			uvArray.push( vector2.x );
-			uvArray.push( vector2.y );
-
-		}
-
-		if ( ! options.arrays ) {
-
-			this.setIndex( indicesArray );
-			this.addAttribute( 'position', new Float32BufferAttribute( verticesArray, 3 ) );
-			this.addAttribute( 'uv', new Float32BufferAttribute( uvArray, 2 ) );
-
-		}
-
-	};
-
-	ExtrudeGeometry.WorldUVGenerator = {
-
-		generateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {
-
-			var a_x = vertices[ indexA * 3 ];
-			var a_y = vertices[ indexA * 3 + 1 ];
-			var b_x = vertices[ indexB * 3 ];
-			var b_y = vertices[ indexB * 3 + 1 ];
-			var c_x = vertices[ indexC * 3 ];
-			var c_y = vertices[ indexC * 3 + 1 ];
-
-			return [
-				new Vector2( a_x, a_y ),
-				new Vector2( b_x, b_y ),
-				new Vector2( c_x, c_y )
-			];
-
-		},
-
-		generateSideWallUV: function ( geometry, vertices, indexA, indexB, indexC, indexD ) {
-
-			var a_x = vertices[ indexA * 3 ];
-			var a_y = vertices[ indexA * 3 + 1 ];
-			var a_z = vertices[ indexA * 3 + 2 ];
-			var b_x = vertices[ indexB * 3 ];
-			var b_y = vertices[ indexB * 3 + 1 ];
-			var b_z = vertices[ indexB * 3 + 2 ];
-			var c_x = vertices[ indexC * 3 ];
-			var c_y = vertices[ indexC * 3 + 1 ];
-			var c_z = vertices[ indexC * 3 + 2 ];
-			var d_x = vertices[ indexD * 3 ];
-			var d_y = vertices[ indexD * 3 + 1 ];
-			var d_z = vertices[ indexD * 3 + 2 ];
-
-			if ( Math.abs( a_y - b_y ) < 0.01 ) {
-
-				return [
-					new Vector2( a_x, 1 - a_z ),
-					new Vector2( b_x, 1 - b_z ),
-					new Vector2( c_x, 1 - c_z ),
-					new Vector2( d_x, 1 - d_z )
-				];
-
-			} else {
-
-				return [
-					new Vector2( a_y, 1 - a_z ),
-					new Vector2( b_y, 1 - b_z ),
-					new Vector2( c_y, 1 - c_z ),
-					new Vector2( d_y, 1 - d_z )
-				];
-
-			}
-
-		}
-	};
-
-	/**
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 * @author alteredq / http://alteredqualia.com/
-	 *
-	 * Text = 3D Text
-	 *
-	 * parameters = {
-	 *  font: <THREE.Font>, // font
-	 *
-	 *  size: <float>, // size of the text
-	 *  height: <float>, // thickness to extrude text
-	 *  curveSegments: <int>, // number of points on the curves
-	 *
-	 *  bevelEnabled: <bool>, // turn on bevel
-	 *  bevelThickness: <float>, // how deep into text bevel goes
-	 *  bevelSize: <float> // how far from text outline is bevel
-	 * }
-	 */
-
-	// TextGeometry
-
-	function TextGeometry( text, parameters ) {
-
-		Geometry.call( this );
-
-		this.type = 'TextGeometry';
-
-		this.parameters = {
-			text: text,
-			parameters: parameters
-		};
-
-		this.fromBufferGeometry( new TextBufferGeometry( text, parameters ) );
-		this.mergeVertices();
-
-	}
-
-	TextGeometry.prototype = Object.create( Geometry.prototype );
-	TextGeometry.prototype.constructor = TextGeometry;
-
-	// TextBufferGeometry
-
-	function TextBufferGeometry( text, parameters ) {
-
-		parameters = parameters || {};
-
-		var font = parameters.font;
-
-		if ( ! ( font && font.isFont ) ) {
-
-			console.error( 'THREE.TextGeometry: font parameter is not an instance of THREE.Font.' );
-			return new Geometry();
-
-		}
-
-		var shapes = font.generateShapes( text, parameters.size, parameters.curveSegments );
-
-		// translate parameters to ExtrudeGeometry API
-
-		parameters.amount = parameters.height !== undefined ? parameters.height : 50;
-
-		// defaults
-
-		if ( parameters.bevelThickness === undefined ) parameters.bevelThickness = 10;
-		if ( parameters.bevelSize === undefined ) parameters.bevelSize = 8;
-		if ( parameters.bevelEnabled === undefined ) parameters.bevelEnabled = false;
-
-		ExtrudeBufferGeometry.call( this, shapes, parameters );
-
-		this.type = 'TextBufferGeometry';
-
-	}
-
-	TextBufferGeometry.prototype = Object.create( ExtrudeBufferGeometry.prototype );
-	TextBufferGeometry.prototype.constructor = TextBufferGeometry;
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author benaadams / https://twitter.com/ben_a_adams
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// SphereGeometry
-
-	function SphereGeometry( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {
-
-		Geometry.call( this );
-
-		this.type = 'SphereGeometry';
-
-		this.parameters = {
-			radius: radius,
-			widthSegments: widthSegments,
-			heightSegments: heightSegments,
-			phiStart: phiStart,
-			phiLength: phiLength,
-			thetaStart: thetaStart,
-			thetaLength: thetaLength
-		};
-
-		this.fromBufferGeometry( new SphereBufferGeometry( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) );
-		this.mergeVertices();
-
-	}
-
-	SphereGeometry.prototype = Object.create( Geometry.prototype );
-	SphereGeometry.prototype.constructor = SphereGeometry;
-
-	// SphereBufferGeometry
-
-	function SphereBufferGeometry( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'SphereBufferGeometry';
-
-		this.parameters = {
-			radius: radius,
-			widthSegments: widthSegments,
-			heightSegments: heightSegments,
-			phiStart: phiStart,
-			phiLength: phiLength,
-			thetaStart: thetaStart,
-			thetaLength: thetaLength
-		};
-
-		radius = radius || 1;
-
-		widthSegments = Math.max( 3, Math.floor( widthSegments ) || 8 );
-		heightSegments = Math.max( 2, Math.floor( heightSegments ) || 6 );
-
-		phiStart = phiStart !== undefined ? phiStart : 0;
-		phiLength = phiLength !== undefined ? phiLength : Math.PI * 2;
-
-		thetaStart = thetaStart !== undefined ? thetaStart : 0;
-		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI;
-
-		var thetaEnd = thetaStart + thetaLength;
-
-		var ix, iy;
-
-		var index = 0;
-		var grid = [];
-
-		var vertex = new Vector3();
-		var normal = new Vector3();
-
-		// buffers
-
-		var indices = [];
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
-
-		// generate vertices, normals and uvs
-
-		for ( iy = 0; iy <= heightSegments; iy ++ ) {
-
-			var verticesRow = [];
-
-			var v = iy / heightSegments;
-
-			for ( ix = 0; ix <= widthSegments; ix ++ ) {
-
-				var u = ix / widthSegments;
-
-				// vertex
-
-				vertex.x = - radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
-				vertex.y = radius * Math.cos( thetaStart + v * thetaLength );
-				vertex.z = radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
-
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-				// normal
-
-				normal.set( vertex.x, vertex.y, vertex.z ).normalize();
-				normals.push( normal.x, normal.y, normal.z );
-
-				// uv
-
-				uvs.push( u, 1 - v );
-
-				verticesRow.push( index ++ );
-
-			}
-
-			grid.push( verticesRow );
-
-		}
-
-		// indices
-
-		for ( iy = 0; iy < heightSegments; iy ++ ) {
-
-			for ( ix = 0; ix < widthSegments; ix ++ ) {
-
-				var a = grid[ iy ][ ix + 1 ];
-				var b = grid[ iy ][ ix ];
-				var c = grid[ iy + 1 ][ ix ];
-				var d = grid[ iy + 1 ][ ix + 1 ];
-
-				if ( iy !== 0 || thetaStart > 0 ) indices.push( a, b, d );
-				if ( iy !== heightSegments - 1 || thetaEnd < Math.PI ) indices.push( b, c, d );
-
-			}
-
-		}
-
-		// build geometry
-
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
-
-	}
-
-	SphereBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	SphereBufferGeometry.prototype.constructor = SphereBufferGeometry;
-
-	/**
-	 * @author Kaleb Murphy
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// RingGeometry
-
-	function RingGeometry( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) {
-
-		Geometry.call( this );
-
-		this.type = 'RingGeometry';
-
-		this.parameters = {
-			innerRadius: innerRadius,
-			outerRadius: outerRadius,
-			thetaSegments: thetaSegments,
-			phiSegments: phiSegments,
-			thetaStart: thetaStart,
-			thetaLength: thetaLength
-		};
-
-		this.fromBufferGeometry( new RingBufferGeometry( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) );
-		this.mergeVertices();
-
-	}
-
-	RingGeometry.prototype = Object.create( Geometry.prototype );
-	RingGeometry.prototype.constructor = RingGeometry;
-
-	// RingBufferGeometry
-
-	function RingBufferGeometry( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'RingBufferGeometry';
-
-		this.parameters = {
-			innerRadius: innerRadius,
-			outerRadius: outerRadius,
-			thetaSegments: thetaSegments,
-			phiSegments: phiSegments,
-			thetaStart: thetaStart,
-			thetaLength: thetaLength
-		};
-
-		innerRadius = innerRadius || 0.5;
-		outerRadius = outerRadius || 1;
-
-		thetaStart = thetaStart !== undefined ? thetaStart : 0;
-		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI * 2;
-
-		thetaSegments = thetaSegments !== undefined ? Math.max( 3, thetaSegments ) : 8;
-		phiSegments = phiSegments !== undefined ? Math.max( 1, phiSegments ) : 1;
-
-		// buffers
-
-		var indices = [];
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
-
-		// some helper variables
-
-		var segment;
-		var radius = innerRadius;
-		var radiusStep = ( ( outerRadius - innerRadius ) / phiSegments );
-		var vertex = new Vector3();
-		var uv = new Vector2();
-		var j, i;
-
-		// generate vertices, normals and uvs
-
-		for ( j = 0; j <= phiSegments; j ++ ) {
-
-			for ( i = 0; i <= thetaSegments; i ++ ) {
-
-				// values are generate from the inside of the ring to the outside
-
-				segment = thetaStart + i / thetaSegments * thetaLength;
-
-				// vertex
-
-				vertex.x = radius * Math.cos( segment );
-				vertex.y = radius * Math.sin( segment );
-
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-				// normal
-
-				normals.push( 0, 0, 1 );
-
-				// uv
-
-				uv.x = ( vertex.x / outerRadius + 1 ) / 2;
-				uv.y = ( vertex.y / outerRadius + 1 ) / 2;
-
-				uvs.push( uv.x, uv.y );
-
-			}
-
-			// increase the radius for next row of vertices
-
-			radius += radiusStep;
-
-		}
-
-		// indices
-
-		for ( j = 0; j < phiSegments; j ++ ) {
-
-			var thetaSegmentLevel = j * ( thetaSegments + 1 );
-
-			for ( i = 0; i < thetaSegments; i ++ ) {
-
-				segment = i + thetaSegmentLevel;
-
-				var a = segment;
-				var b = segment + thetaSegments + 1;
-				var c = segment + thetaSegments + 2;
-				var d = segment + 1;
-
-				// faces
-
-				indices.push( a, b, d );
-				indices.push( b, c, d );
-
-			}
-
-		}
-
-		// build geometry
-
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
-
-	}
-
-	RingBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	RingBufferGeometry.prototype.constructor = RingBufferGeometry;
-
-	/**
-	 * @author astrodud / http://astrodud.isgreat.org/
-	 * @author zz85 / https://github.com/zz85
-	 * @author bhouston / http://clara.io
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// LatheGeometry
-
-	function LatheGeometry( points, segments, phiStart, phiLength ) {
-
-		Geometry.call( this );
-
-		this.type = 'LatheGeometry';
-
-		this.parameters = {
-			points: points,
-			segments: segments,
-			phiStart: phiStart,
-			phiLength: phiLength
-		};
-
-		this.fromBufferGeometry( new LatheBufferGeometry( points, segments, phiStart, phiLength ) );
-		this.mergeVertices();
-
-	}
-
-	LatheGeometry.prototype = Object.create( Geometry.prototype );
-	LatheGeometry.prototype.constructor = LatheGeometry;
-
-	// LatheBufferGeometry
-
-	function LatheBufferGeometry( points, segments, phiStart, phiLength ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'LatheBufferGeometry';
-
-		this.parameters = {
-			points: points,
-			segments: segments,
-			phiStart: phiStart,
-			phiLength: phiLength
-		};
-
-		segments = Math.floor( segments ) || 12;
-		phiStart = phiStart || 0;
-		phiLength = phiLength || Math.PI * 2;
-
-		// clamp phiLength so it's in range of [ 0, 2PI ]
-
-		phiLength = _Math.clamp( phiLength, 0, Math.PI * 2 );
-
-
-		// buffers
-
-		var indices = [];
-		var vertices = [];
-		var uvs = [];
-
-		// helper variables
-
-		var base;
-		var inverseSegments = 1.0 / segments;
-		var vertex = new Vector3();
-		var uv = new Vector2();
-		var i, j;
-
-		// generate vertices and uvs
-
-		for ( i = 0; i <= segments; i ++ ) {
-
-			var phi = phiStart + i * inverseSegments * phiLength;
-
-			var sin = Math.sin( phi );
-			var cos = Math.cos( phi );
-
-			for ( j = 0; j <= ( points.length - 1 ); j ++ ) {
-
-				// vertex
-
-				vertex.x = points[ j ].x * sin;
-				vertex.y = points[ j ].y;
-				vertex.z = points[ j ].x * cos;
-
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-				// uv
-
-				uv.x = i / segments;
-				uv.y = j / ( points.length - 1 );
-
-				uvs.push( uv.x, uv.y );
-
-
-			}
-
-		}
-
-		// indices
-
-		for ( i = 0; i < segments; i ++ ) {
-
-			for ( j = 0; j < ( points.length - 1 ); j ++ ) {
-
-				base = j + i * points.length;
-
-				var a = base;
-				var b = base + points.length;
-				var c = base + points.length + 1;
-				var d = base + 1;
-
-				// faces
-
-				indices.push( a, b, d );
-				indices.push( b, c, d );
-
-			}
-
-		}
-
-		// build geometry
-
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
-
-		// generate normals
-
-		this.computeVertexNormals();
-
-		// if the geometry is closed, we need to average the normals along the seam.
-		// because the corresponding vertices are identical (but still have different UVs).
-
-		if ( phiLength === Math.PI * 2 ) {
-
-			var normals = this.attributes.normal.array;
-			var n1 = new Vector3();
-			var n2 = new Vector3();
-			var n = new Vector3();
-
-			// this is the buffer offset for the last line of vertices
-
-			base = segments * points.length * 3;
-
-			for ( i = 0, j = 0; i < points.length; i ++, j += 3 ) {
-
-				// select the normal of the vertex in the first line
-
-				n1.x = normals[ j + 0 ];
-				n1.y = normals[ j + 1 ];
-				n1.z = normals[ j + 2 ];
-
-				// select the normal of the vertex in the last line
-
-				n2.x = normals[ base + j + 0 ];
-				n2.y = normals[ base + j + 1 ];
-				n2.z = normals[ base + j + 2 ];
-
-				// average normals
-
-				n.addVectors( n1, n2 ).normalize();
-
-				// assign the new values to both normals
-
-				normals[ j + 0 ] = normals[ base + j + 0 ] = n.x;
-				normals[ j + 1 ] = normals[ base + j + 1 ] = n.y;
-				normals[ j + 2 ] = normals[ base + j + 2 ] = n.z;
-
-			}
-
-		}
-
-	}
-
-	LatheBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	LatheBufferGeometry.prototype.constructor = LatheBufferGeometry;
-
-	/**
-	 * @author jonobr1 / http://jonobr1.com
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// ShapeGeometry
-
-	function ShapeGeometry( shapes, curveSegments ) {
-
-		Geometry.call( this );
-
-		this.type = 'ShapeGeometry';
-
-		if ( typeof curveSegments === 'object' ) {
-
-			console.warn( 'THREE.ShapeGeometry: Options parameter has been removed.' );
-
-			curveSegments = curveSegments.curveSegments;
-
-		}
-
-		this.parameters = {
-			shapes: shapes,
-			curveSegments: curveSegments
-		};
-
-		this.fromBufferGeometry( new ShapeBufferGeometry( shapes, curveSegments ) );
-		this.mergeVertices();
-
-	}
-
-	ShapeGeometry.prototype = Object.create( Geometry.prototype );
-	ShapeGeometry.prototype.constructor = ShapeGeometry;
-
-	ShapeGeometry.prototype.toJSON = function () {
-
-		var data = Geometry.prototype.toJSON.call( this );
-
-		var shapes = this.parameters.shapes;
-
-		return toJSON( shapes, data );
-
-	};
-
-	// ShapeBufferGeometry
-
-	function ShapeBufferGeometry( shapes, curveSegments ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'ShapeBufferGeometry';
-
-		this.parameters = {
-			shapes: shapes,
-			curveSegments: curveSegments
-		};
-
-		curveSegments = curveSegments || 12;
-
-		// buffers
-
-		var indices = [];
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
-
-		// helper variables
-
-		var groupStart = 0;
-		var groupCount = 0;
-
-		// allow single and array values for "shapes" parameter
-
-		if ( Array.isArray( shapes ) === false ) {
-
-			addShape( shapes );
-
-		} else {
-
-			for ( var i = 0; i < shapes.length; i ++ ) {
-
-				addShape( shapes[ i ] );
-
-				this.addGroup( groupStart, groupCount, i ); // enables MultiMaterial support
-
-				groupStart += groupCount;
-				groupCount = 0;
-
-			}
-
-		}
-
-		// build geometry
-
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
-
-
-		// helper functions
-
-		function addShape( shape ) {
-
-			var i, l, shapeHole;
-
-			var indexOffset = vertices.length / 3;
-			var points = shape.extractPoints( curveSegments );
-
-			var shapeVertices = points.shape;
-			var shapeHoles = points.holes;
-
-			// check direction of vertices
-
-			if ( ShapeUtils.isClockWise( shapeVertices ) === false ) {
-
-				shapeVertices = shapeVertices.reverse();
-
-				// also check if holes are in the opposite direction
-
-				for ( i = 0, l = shapeHoles.length; i < l; i ++ ) {
-
-					shapeHole = shapeHoles[ i ];
-
-					if ( ShapeUtils.isClockWise( shapeHole ) === true ) {
-
-						shapeHoles[ i ] = shapeHole.reverse();
-
-					}
-
-				}
-
-			}
-
-			var faces = ShapeUtils.triangulateShape( shapeVertices, shapeHoles );
-
-			// join vertices of inner and outer paths to a single array
-
-			for ( i = 0, l = shapeHoles.length; i < l; i ++ ) {
-
-				shapeHole = shapeHoles[ i ];
-				shapeVertices = shapeVertices.concat( shapeHole );
-
-			}
-
-			// vertices, normals, uvs
-
-			for ( i = 0, l = shapeVertices.length; i < l; i ++ ) {
-
-				var vertex = shapeVertices[ i ];
-
-				vertices.push( vertex.x, vertex.y, 0 );
-				normals.push( 0, 0, 1 );
-				uvs.push( vertex.x, vertex.y ); // world uvs
-
-			}
-
-			// incides
-
-			for ( i = 0, l = faces.length; i < l; i ++ ) {
-
-				var face = faces[ i ];
-
-				var a = face[ 0 ] + indexOffset;
-				var b = face[ 1 ] + indexOffset;
-				var c = face[ 2 ] + indexOffset;
-
-				indices.push( a, b, c );
-				groupCount += 3;
-
-			}
-
-		}
-
-	}
-
-	ShapeBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	ShapeBufferGeometry.prototype.constructor = ShapeBufferGeometry;
-
-	ShapeBufferGeometry.prototype.toJSON = function () {
-
-		var data = BufferGeometry.prototype.toJSON.call( this );
-
-		var shapes = this.parameters.shapes;
-
-		return toJSON( shapes, data );
-
-	};
-
-	//
-
-	function toJSON( shapes, data ) {
-
-		data.shapes = [];
-
-		if ( Array.isArray( shapes ) ) {
-
-			for ( var i = 0, l = shapes.length; i < l; i ++ ) {
-
-				var shape = shapes[ i ];
-
-				data.shapes.push( shape.uuid );
-
-			}
-
-		} else {
-
-			data.shapes.push( shapes.uuid );
-
-		}
-
-		return data;
-
-	}
-
-	/**
-	 * @author WestLangley / http://github.com/WestLangley
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	function EdgesGeometry( geometry, thresholdAngle ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'EdgesGeometry';
-
-		this.parameters = {
-			thresholdAngle: thresholdAngle
-		};
-
-		thresholdAngle = ( thresholdAngle !== undefined ) ? thresholdAngle : 1;
-
-		// buffer
-
-		var vertices = [];
-
-		// helper variables
-
-		var thresholdDot = Math.cos( _Math.DEG2RAD * thresholdAngle );
-		var edge = [ 0, 0 ], edges = {}, edge1, edge2;
-		var key, keys = [ 'a', 'b', 'c' ];
-
-		// prepare source geometry
-
-		var geometry2;
-
-		if ( geometry.isBufferGeometry ) {
-
-			geometry2 = new Geometry();
-			geometry2.fromBufferGeometry( geometry );
-
-		} else {
-
-			geometry2 = geometry.clone();
-
-		}
-
-		geometry2.mergeVertices();
-		geometry2.computeFaceNormals();
-
-		var sourceVertices = geometry2.vertices;
-		var faces = geometry2.faces;
-
-		// now create a data structure where each entry represents an edge with its adjoining faces
-
-		for ( var i = 0, l = faces.length; i < l; i ++ ) {
-
-			var face = faces[ i ];
-
-			for ( var j = 0; j < 3; j ++ ) {
-
-				edge1 = face[ keys[ j ] ];
-				edge2 = face[ keys[ ( j + 1 ) % 3 ] ];
-				edge[ 0 ] = Math.min( edge1, edge2 );
-				edge[ 1 ] = Math.max( edge1, edge2 );
-
-				key = edge[ 0 ] + ',' + edge[ 1 ];
-
-				if ( edges[ key ] === undefined ) {
-
-					edges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ], face1: i, face2: undefined };
-
-				} else {
-
-					edges[ key ].face2 = i;
-
-				}
-
-			}
-
-		}
-
-		// generate vertices
-
-		for ( key in edges ) {
-
-			var e = edges[ key ];
-
-			// an edge is only rendered if the angle (in degrees) between the face normals of the adjoining faces exceeds this value. default = 1 degree.
-
-			if ( e.face2 === undefined || faces[ e.face1 ].normal.dot( faces[ e.face2 ].normal ) <= thresholdDot ) {
-
-				var vertex = sourceVertices[ e.index1 ];
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-				vertex = sourceVertices[ e.index2 ];
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-			}
-
-		}
-
-		// build geometry
-
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-
-	}
-
-	EdgesGeometry.prototype = Object.create( BufferGeometry.prototype );
-	EdgesGeometry.prototype.constructor = EdgesGeometry;
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	// CylinderGeometry
-
-	function CylinderGeometry( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
-
-		Geometry.call( this );
-
-		this.type = 'CylinderGeometry';
-
-		this.parameters = {
-			radiusTop: radiusTop,
-			radiusBottom: radiusBottom,
-			height: height,
-			radialSegments: radialSegments,
-			heightSegments: heightSegments,
-			openEnded: openEnded,
-			thetaStart: thetaStart,
-			thetaLength: thetaLength
-		};
-
-		this.fromBufferGeometry( new CylinderBufferGeometry( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) );
-		this.mergeVertices();
-
-	}
-
-	CylinderGeometry.prototype = Object.create( Geometry.prototype );
-	CylinderGeometry.prototype.constructor = CylinderGeometry;
-
-	// CylinderBufferGeometry
-
-	function CylinderBufferGeometry( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'CylinderBufferGeometry';
-
-		this.parameters = {
-			radiusTop: radiusTop,
-			radiusBottom: radiusBottom,
-			height: height,
-			radialSegments: radialSegments,
-			heightSegments: heightSegments,
-			openEnded: openEnded,
-			thetaStart: thetaStart,
-			thetaLength: thetaLength
-		};
-
-		var scope = this;
-
-		radiusTop = radiusTop !== undefined ? radiusTop : 1;
-		radiusBottom = radiusBottom !== undefined ? radiusBottom : 1;
-		height = height || 1;
-
-		radialSegments = Math.floor( radialSegments ) || 8;
-		heightSegments = Math.floor( heightSegments ) || 1;
-
-		openEnded = openEnded !== undefined ? openEnded : false;
-		thetaStart = thetaStart !== undefined ? thetaStart : 0.0;
-		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI * 2;
-
-		// buffers
-
-		var indices = [];
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
-
-		// helper variables
-
-		var index = 0;
-		var indexArray = [];
-		var halfHeight = height / 2;
-		var groupStart = 0;
-
-		// generate geometry
-
-		generateTorso();
-
-		if ( openEnded === false ) {
-
-			if ( radiusTop > 0 ) generateCap( true );
-			if ( radiusBottom > 0 ) generateCap( false );
-
-		}
-
-		// build geometry
-
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
-
-		function generateTorso() {
-
-			var x, y;
-			var normal = new Vector3();
-			var vertex = new Vector3();
-
-			var groupCount = 0;
-
-			// this will be used to calculate the normal
-			var slope = ( radiusBottom - radiusTop ) / height;
-
-			// generate vertices, normals and uvs
-
-			for ( y = 0; y <= heightSegments; y ++ ) {
-
-				var indexRow = [];
-
-				var v = y / heightSegments;
-
-				// calculate the radius of the current row
-
-				var radius = v * ( radiusBottom - radiusTop ) + radiusTop;
-
-				for ( x = 0; x <= radialSegments; x ++ ) {
-
-					var u = x / radialSegments;
-
-					var theta = u * thetaLength + thetaStart;
-
-					var sinTheta = Math.sin( theta );
-					var cosTheta = Math.cos( theta );
-
-					// vertex
-
-					vertex.x = radius * sinTheta;
-					vertex.y = - v * height + halfHeight;
-					vertex.z = radius * cosTheta;
-					vertices.push( vertex.x, vertex.y, vertex.z );
-
-					// normal
-
-					normal.set( sinTheta, slope, cosTheta ).normalize();
-					normals.push( normal.x, normal.y, normal.z );
-
-					// uv
-
-					uvs.push( u, 1 - v );
-
-					// save index of vertex in respective row
-
-					indexRow.push( index ++ );
-
-				}
-
-				// now save vertices of the row in our index array
-
-				indexArray.push( indexRow );
-
-			}
-
-			// generate indices
-
-			for ( x = 0; x < radialSegments; x ++ ) {
-
-				for ( y = 0; y < heightSegments; y ++ ) {
-
-					// we use the index array to access the correct indices
-
-					var a = indexArray[ y ][ x ];
-					var b = indexArray[ y + 1 ][ x ];
-					var c = indexArray[ y + 1 ][ x + 1 ];
-					var d = indexArray[ y ][ x + 1 ];
-
-					// faces
-
-					indices.push( a, b, d );
-					indices.push( b, c, d );
-
-					// update group counter
-
-					groupCount += 6;
-
-				}
-
-			}
-
-			// add a group to the geometry. this will ensure multi material support
-
-			scope.addGroup( groupStart, groupCount, 0 );
-
-			// calculate new start value for groups
-
-			groupStart += groupCount;
-
-		}
-
-		function generateCap( top ) {
-
-			var x, centerIndexStart, centerIndexEnd;
-
-			var uv = new Vector2();
-			var vertex = new Vector3();
-
-			var groupCount = 0;
-
-			var radius = ( top === true ) ? radiusTop : radiusBottom;
-			var sign = ( top === true ) ? 1 : - 1;
-
-			// save the index of the first center vertex
-			centerIndexStart = index;
-
-			// first we generate the center vertex data of the cap.
-			// because the geometry needs one set of uvs per face,
-			// we must generate a center vertex per face/segment
-
-			for ( x = 1; x <= radialSegments; x ++ ) {
-
-				// vertex
-
-				vertices.push( 0, halfHeight * sign, 0 );
-
-				// normal
-
-				normals.push( 0, sign, 0 );
-
-				// uv
-
-				uvs.push( 0.5, 0.5 );
-
-				// increase index
-
-				index ++;
-
-			}
-
-			// save the index of the last center vertex
-
-			centerIndexEnd = index;
-
-			// now we generate the surrounding vertices, normals and uvs
-
-			for ( x = 0; x <= radialSegments; x ++ ) {
-
-				var u = x / radialSegments;
-				var theta = u * thetaLength + thetaStart;
-
-				var cosTheta = Math.cos( theta );
-				var sinTheta = Math.sin( theta );
-
-				// vertex
-
-				vertex.x = radius * sinTheta;
-				vertex.y = halfHeight * sign;
-				vertex.z = radius * cosTheta;
-				vertices.push( vertex.x, vertex.y, vertex.z );
-
-				// normal
-
-				normals.push( 0, sign, 0 );
-
-				// uv
-
-				uv.x = ( cosTheta * 0.5 ) + 0.5;
-				uv.y = ( sinTheta * 0.5 * sign ) + 0.5;
-				uvs.push( uv.x, uv.y );
-
-				// increase index
-
-				index ++;
-
-			}
-
-			// generate indices
-
-			for ( x = 0; x < radialSegments; x ++ ) {
-
-				var c = centerIndexStart + x;
-				var i = centerIndexEnd + x;
-
-				if ( top === true ) {
-
-					// face top
-
-					indices.push( i, i + 1, c );
-
-				} else {
-
-					// face bottom
-
-					indices.push( i + 1, i, c );
-
-				}
-
-				groupCount += 3;
-
-			}
-
-			// add a group to the geometry. this will ensure multi material support
-
-			scope.addGroup( groupStart, groupCount, top === true ? 1 : 2 );
-
-			// calculate new start value for groups
-
-			groupStart += groupCount;
-
-		}
-
-	}
-
-	CylinderBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	CylinderBufferGeometry.prototype.constructor = CylinderBufferGeometry;
-
-	/**
-	 * @author abelnation / http://github.com/abelnation
-	 */
-
-	// ConeGeometry
-
-	function ConeGeometry( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
-
-		CylinderGeometry.call( this, 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );
-
-		this.type = 'ConeGeometry';
-
-		this.parameters = {
-			radius: radius,
-			height: height,
-			radialSegments: radialSegments,
-			heightSegments: heightSegments,
-			openEnded: openEnded,
-			thetaStart: thetaStart,
-			thetaLength: thetaLength
-		};
-
-	}
-
-	ConeGeometry.prototype = Object.create( CylinderGeometry.prototype );
-	ConeGeometry.prototype.constructor = ConeGeometry;
-
-	// ConeBufferGeometry
-
-	function ConeBufferGeometry( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
-
-		CylinderBufferGeometry.call( this, 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );
-
-		this.type = 'ConeBufferGeometry';
-
-		this.parameters = {
-			radius: radius,
-			height: height,
-			radialSegments: radialSegments,
-			heightSegments: heightSegments,
-			openEnded: openEnded,
-			thetaStart: thetaStart,
-			thetaLength: thetaLength
-		};
-
-	}
-
-	ConeBufferGeometry.prototype = Object.create( CylinderBufferGeometry.prototype );
-	ConeBufferGeometry.prototype.constructor = ConeBufferGeometry;
-
-	/**
-	 * @author benaadams / https://twitter.com/ben_a_adams
-	 * @author Mugen87 / https://github.com/Mugen87
-	 * @author hughes
-	 */
-
-	// CircleGeometry
-
-	function CircleGeometry( radius, segments, thetaStart, thetaLength ) {
-
-		Geometry.call( this );
-
-		this.type = 'CircleGeometry';
-
-		this.parameters = {
-			radius: radius,
-			segments: segments,
-			thetaStart: thetaStart,
-			thetaLength: thetaLength
-		};
-
-		this.fromBufferGeometry( new CircleBufferGeometry( radius, segments, thetaStart, thetaLength ) );
-		this.mergeVertices();
-
-	}
-
-	CircleGeometry.prototype = Object.create( Geometry.prototype );
-	CircleGeometry.prototype.constructor = CircleGeometry;
-
-	// CircleBufferGeometry
-
-	function CircleBufferGeometry( radius, segments, thetaStart, thetaLength ) {
-
-		BufferGeometry.call( this );
-
-		this.type = 'CircleBufferGeometry';
-
-		this.parameters = {
-			radius: radius,
-			segments: segments,
-			thetaStart: thetaStart,
-			thetaLength: thetaLength
-		};
-
-		radius = radius || 1;
-		segments = segments !== undefined ? Math.max( 3, segments ) : 8;
-
-		thetaStart = thetaStart !== undefined ? thetaStart : 0;
-		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI * 2;
-
-		// buffers
-
-		var indices = [];
-		var vertices = [];
-		var normals = [];
-		var uvs = [];
-
-		// helper variables
-
-		var i, s;
-		var vertex = new Vector3();
-		var uv = new Vector2();
-
-		// center point
-
-		vertices.push( 0, 0, 0 );
-		normals.push( 0, 0, 1 );
-		uvs.push( 0.5, 0.5 );
-
-		for ( s = 0, i = 3; s <= segments; s ++, i += 3 ) {
-
-			var segment = thetaStart + s / segments * thetaLength;
-
-			// vertex
-
-			vertex.x = radius * Math.cos( segment );
-			vertex.y = radius * Math.sin( segment );
-
-			vertices.push( vertex.x, vertex.y, vertex.z );
-
-			// normal
-
-			normals.push( 0, 0, 1 );
-
-			// uvs
-
-			uv.x = ( vertices[ i ] / radius + 1 ) / 2;
-			uv.y = ( vertices[ i + 1 ] / radius + 1 ) / 2;
-
-			uvs.push( uv.x, uv.y );
-
-		}
-
-		// indices
-
-		for ( i = 1; i <= segments; i ++ ) {
-
-			indices.push( i, i + 1, 0 );
-
-		}
-
-		// build geometry
-
-		this.setIndex( indices );
-		this.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		this.addAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
-		this.addAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
-
-	}
-
-	CircleBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
-	CircleBufferGeometry.prototype.constructor = CircleBufferGeometry;
-
-
-
-	var Geometries = Object.freeze({
-		WireframeGeometry: WireframeGeometry,
-		ParametricGeometry: ParametricGeometry,
-		ParametricBufferGeometry: ParametricBufferGeometry,
-		TetrahedronGeometry: TetrahedronGeometry,
-		TetrahedronBufferGeometry: TetrahedronBufferGeometry,
-		OctahedronGeometry: OctahedronGeometry,
-		OctahedronBufferGeometry: OctahedronBufferGeometry,
-		IcosahedronGeometry: IcosahedronGeometry,
-		IcosahedronBufferGeometry: IcosahedronBufferGeometry,
-		DodecahedronGeometry: DodecahedronGeometry,
-		DodecahedronBufferGeometry: DodecahedronBufferGeometry,
-		PolyhedronGeometry: PolyhedronGeometry,
-		PolyhedronBufferGeometry: PolyhedronBufferGeometry,
-		TubeGeometry: TubeGeometry,
-		TubeBufferGeometry: TubeBufferGeometry,
-		TorusKnotGeometry: TorusKnotGeometry,
-		TorusKnotBufferGeometry: TorusKnotBufferGeometry,
-		TorusGeometry: TorusGeometry,
-		TorusBufferGeometry: TorusBufferGeometry,
-		TextGeometry: TextGeometry,
-		TextBufferGeometry: TextBufferGeometry,
-		SphereGeometry: SphereGeometry,
-		SphereBufferGeometry: SphereBufferGeometry,
-		RingGeometry: RingGeometry,
-		RingBufferGeometry: RingBufferGeometry,
-		PlaneGeometry: PlaneGeometry,
-		PlaneBufferGeometry: PlaneBufferGeometry,
-		LatheGeometry: LatheGeometry,
-		LatheBufferGeometry: LatheBufferGeometry,
-		ShapeGeometry: ShapeGeometry,
-		ShapeBufferGeometry: ShapeBufferGeometry,
-		ExtrudeGeometry: ExtrudeGeometry,
-		ExtrudeBufferGeometry: ExtrudeBufferGeometry,
-		EdgesGeometry: EdgesGeometry,
-		ConeGeometry: ConeGeometry,
-		ConeBufferGeometry: ConeBufferGeometry,
-		CylinderGeometry: CylinderGeometry,
-		CylinderBufferGeometry: CylinderBufferGeometry,
-		CircleGeometry: CircleGeometry,
-		CircleBufferGeometry: CircleBufferGeometry,
-		BoxGeometry: BoxGeometry,
-		BoxBufferGeometry: BoxBufferGeometry
-	});
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 *
-	 * parameters = {
-	 *  color: <THREE.Color>
-	 * }
-	 */
-
-	function ShadowMaterial( parameters ) {
-
-		Material.call( this );
-
-		this.type = 'ShadowMaterial';
-
-		this.color = new Color( 0x000000 );
-		this.transparent = true;
-
-		this.setValues( parameters );
-
-	}
-
-	ShadowMaterial.prototype = Object.create( Material.prototype );
-	ShadowMaterial.prototype.constructor = ShadowMaterial;
-
-	ShadowMaterial.prototype.isShadowMaterial = true;
-
-	ShadowMaterial.prototype.copy = function ( source ) {
-
-		Material.prototype.copy.call( this, source );
-
-		this.color.copy( source.color );
-
-		return this;
-
-	};
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function RawShaderMaterial( parameters ) {
-
-		ShaderMaterial.call( this, parameters );
-
-		this.type = 'RawShaderMaterial';
-
-	}
-
-	RawShaderMaterial.prototype = Object.create( ShaderMaterial.prototype );
-	RawShaderMaterial.prototype.constructor = RawShaderMaterial;
-
-	RawShaderMaterial.prototype.isRawShaderMaterial = true;
-
-	/**
-	 * @author WestLangley / http://github.com/WestLangley
-	 *
-	 * parameters = {
-	 *  color: <hex>,
-	 *  roughness: <float>,
-	 *  metalness: <float>,
-	 *  opacity: <float>,
-	 *
-	 *  map: new THREE.Texture( <Image> ),
-	 *
-	 *  lightMap: new THREE.Texture( <Image> ),
-	 *  lightMapIntensity: <float>
-	 *
-	 *  aoMap: new THREE.Texture( <Image> ),
-	 *  aoMapIntensity: <float>
-	 *
-	 *  emissive: <hex>,
-	 *  emissiveIntensity: <float>
-	 *  emissiveMap: new THREE.Texture( <Image> ),
-	 *
-	 *  bumpMap: new THREE.Texture( <Image> ),
-	 *  bumpScale: <float>,
-	 *
-	 *  normalMap: new THREE.Texture( <Image> ),
-	 *  normalScale: <Vector2>,
-	 *
-	 *  displacementMap: new THREE.Texture( <Image> ),
-	 *  displacementScale: <float>,
-	 *  displacementBias: <float>,
-	 *
-	 *  roughnessMap: new THREE.Texture( <Image> ),
-	 *
-	 *  metalnessMap: new THREE.Texture( <Image> ),
-	 *
-	 *  alphaMap: new THREE.Texture( <Image> ),
-	 *
-	 *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
-	 *  envMapIntensity: <float>
-	 *
-	 *  refractionRatio: <float>,
-	 *
-	 *  wireframe: <boolean>,
-	 *  wireframeLinewidth: <float>,
-	 *
-	 *  skinning: <bool>,
-	 *  morphTargets: <bool>,
-	 *  morphNormals: <bool>
-	 * }
-	 */
-
-	function MeshStandardMaterial( parameters ) {
-
-		Material.call( this );
-
-		this.defines = { 'STANDARD': '' };
-
-		this.type = 'MeshStandardMaterial';
-
-		this.color = new Color( 0xffffff ); // diffuse
-		this.roughness = 0.5;
-		this.metalness = 0.5;
-
-		this.map = null;
-
-		this.lightMap = null;
-		this.lightMapIntensity = 1.0;
-
-		this.aoMap = null;
-		this.aoMapIntensity = 1.0;
-
-		this.emissive = new Color( 0x000000 );
-		this.emissiveIntensity = 1.0;
-		this.emissiveMap = null;
-
-		this.bumpMap = null;
-		this.bumpScale = 1;
-
-		this.normalMap = null;
-		this.normalScale = new Vector2( 1, 1 );
-
-		this.displacementMap = null;
-		this.displacementScale = 1;
-		this.displacementBias = 0;
-
-		this.roughnessMap = null;
-
-		this.metalnessMap = null;
-
-		this.alphaMap = null;
-
-		this.envMap = null;
-		this.envMapIntensity = 1.0;
-
-		this.refractionRatio = 0.98;
-
-		this.wireframe = false;
-		this.wireframeLinewidth = 1;
-		this.wireframeLinecap = 'round';
-		this.wireframeLinejoin = 'round';
-
-		this.skinning = false;
-		this.morphTargets = false;
-		this.morphNormals = false;
-
-		this.setValues( parameters );
-
-	}
-
-	MeshStandardMaterial.prototype = Object.create( Material.prototype );
-	MeshStandardMaterial.prototype.constructor = MeshStandardMaterial;
-
-	MeshStandardMaterial.prototype.isMeshStandardMaterial = true;
-
-	MeshStandardMaterial.prototype.copy = function ( source ) {
-
-		Material.prototype.copy.call( this, source );
-
-		this.defines = { 'STANDARD': '' };
-
-		this.color.copy( source.color );
-		this.roughness = source.roughness;
-		this.metalness = source.metalness;
-
-		this.map = source.map;
-
-		this.lightMap = source.lightMap;
-		this.lightMapIntensity = source.lightMapIntensity;
-
-		this.aoMap = source.aoMap;
-		this.aoMapIntensity = source.aoMapIntensity;
-
-		this.emissive.copy( source.emissive );
-		this.emissiveMap = source.emissiveMap;
-		this.emissiveIntensity = source.emissiveIntensity;
-
-		this.bumpMap = source.bumpMap;
-		this.bumpScale = source.bumpScale;
-
-		this.normalMap = source.normalMap;
-		this.normalScale.copy( source.normalScale );
-
-		this.displacementMap = source.displacementMap;
-		this.displacementScale = source.displacementScale;
-		this.displacementBias = source.displacementBias;
-
-		this.roughnessMap = source.roughnessMap;
-
-		this.metalnessMap = source.metalnessMap;
-
-		this.alphaMap = source.alphaMap;
-
-		this.envMap = source.envMap;
-		this.envMapIntensity = source.envMapIntensity;
-
-		this.refractionRatio = source.refractionRatio;
-
-		this.wireframe = source.wireframe;
-		this.wireframeLinewidth = source.wireframeLinewidth;
-		this.wireframeLinecap = source.wireframeLinecap;
-		this.wireframeLinejoin = source.wireframeLinejoin;
-
-		this.skinning = source.skinning;
-		this.morphTargets = source.morphTargets;
-		this.morphNormals = source.morphNormals;
-
-		return this;
-
-	};
-
-	/**
-	 * @author WestLangley / http://github.com/WestLangley
-	 *
-	 * parameters = {
-	 *  reflectivity: <float>
-	 * }
-	 */
-
-	function MeshPhysicalMaterial( parameters ) {
-
-		MeshStandardMaterial.call( this );
-
-		this.defines = { 'PHYSICAL': '' };
-
-		this.type = 'MeshPhysicalMaterial';
-
-		this.reflectivity = 0.5; // maps to F0 = 0.04
-
-		this.clearCoat = 0.0;
-		this.clearCoatRoughness = 0.0;
-
-		this.setValues( parameters );
-
-	}
-
-	MeshPhysicalMaterial.prototype = Object.create( MeshStandardMaterial.prototype );
-	MeshPhysicalMaterial.prototype.constructor = MeshPhysicalMaterial;
-
-	MeshPhysicalMaterial.prototype.isMeshPhysicalMaterial = true;
-
-	MeshPhysicalMaterial.prototype.copy = function ( source ) {
-
-		MeshStandardMaterial.prototype.copy.call( this, source );
-
-		this.defines = { 'PHYSICAL': '' };
-
-		this.reflectivity = source.reflectivity;
-
-		this.clearCoat = source.clearCoat;
-		this.clearCoatRoughness = source.clearCoatRoughness;
-
-		return this;
-
-	};
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 *
-	 * parameters = {
-	 *  color: <hex>,
-	 *  specular: <hex>,
-	 *  shininess: <float>,
-	 *  opacity: <float>,
-	 *
-	 *  map: new THREE.Texture( <Image> ),
-	 *
-	 *  lightMap: new THREE.Texture( <Image> ),
-	 *  lightMapIntensity: <float>
-	 *
-	 *  aoMap: new THREE.Texture( <Image> ),
-	 *  aoMapIntensity: <float>
-	 *
-	 *  emissive: <hex>,
-	 *  emissiveIntensity: <float>
-	 *  emissiveMap: new THREE.Texture( <Image> ),
-	 *
-	 *  bumpMap: new THREE.Texture( <Image> ),
-	 *  bumpScale: <float>,
-	 *
-	 *  normalMap: new THREE.Texture( <Image> ),
-	 *  normalScale: <Vector2>,
-	 *
-	 *  displacementMap: new THREE.Texture( <Image> ),
-	 *  displacementScale: <float>,
-	 *  displacementBias: <float>,
-	 *
-	 *  specularMap: new THREE.Texture( <Image> ),
-	 *
-	 *  alphaMap: new THREE.Texture( <Image> ),
-	 *
-	 *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
-	 *  combine: THREE.Multiply,
-	 *  reflectivity: <float>,
-	 *  refractionRatio: <float>,
-	 *
-	 *  wireframe: <boolean>,
-	 *  wireframeLinewidth: <float>,
-	 *
-	 *  skinning: <bool>,
-	 *  morphTargets: <bool>,
-	 *  morphNormals: <bool>
-	 * }
-	 */
-
-	function MeshPhongMaterial( parameters ) {
-
-		Material.call( this );
-
-		this.type = 'MeshPhongMaterial';
-
-		this.color = new Color( 0xffffff ); // diffuse
-		this.specular = new Color( 0x111111 );
-		this.shininess = 30;
-
-		this.map = null;
-
-		this.lightMap = null;
-		this.lightMapIntensity = 1.0;
-
-		this.aoMap = null;
-		this.aoMapIntensity = 1.0;
-
-		this.emissive = new Color( 0x000000 );
-		this.emissiveIntensity = 1.0;
-		this.emissiveMap = null;
-
-		this.bumpMap = null;
-		this.bumpScale = 1;
-
-		this.normalMap = null;
-		this.normalScale = new Vector2( 1, 1 );
-
-		this.displacementMap = null;
-		this.displacementScale = 1;
-		this.displacementBias = 0;
-
-		this.specularMap = null;
-
-		this.alphaMap = null;
-
-		this.envMap = null;
-		this.combine = MultiplyOperation;
-		this.reflectivity = 1;
-		this.refractionRatio = 0.98;
-
-		this.wireframe = false;
-		this.wireframeLinewidth = 1;
-		this.wireframeLinecap = 'round';
-		this.wireframeLinejoin = 'round';
-
-		this.skinning = false;
-		this.morphTargets = false;
-		this.morphNormals = false;
-
-		this.setValues( parameters );
-
-	}
-
-	MeshPhongMaterial.prototype = Object.create( Material.prototype );
-	MeshPhongMaterial.prototype.constructor = MeshPhongMaterial;
-
-	MeshPhongMaterial.prototype.isMeshPhongMaterial = true;
-
-	MeshPhongMaterial.prototype.copy = function ( source ) {
-
-		Material.prototype.copy.call( this, source );
-
-		this.color.copy( source.color );
-		this.specular.copy( source.specular );
-		this.shininess = source.shininess;
-
-		this.map = source.map;
-
-		this.lightMap = source.lightMap;
-		this.lightMapIntensity = source.lightMapIntensity;
-
-		this.aoMap = source.aoMap;
-		this.aoMapIntensity = source.aoMapIntensity;
-
-		this.emissive.copy( source.emissive );
-		this.emissiveMap = source.emissiveMap;
-		this.emissiveIntensity = source.emissiveIntensity;
-
-		this.bumpMap = source.bumpMap;
-		this.bumpScale = source.bumpScale;
-
-		this.normalMap = source.normalMap;
-		this.normalScale.copy( source.normalScale );
-
-		this.displacementMap = source.displacementMap;
-		this.displacementScale = source.displacementScale;
-		this.displacementBias = source.displacementBias;
-
-		this.specularMap = source.specularMap;
-
-		this.alphaMap = source.alphaMap;
-
-		this.envMap = source.envMap;
-		this.combine = source.combine;
-		this.reflectivity = source.reflectivity;
-		this.refractionRatio = source.refractionRatio;
-
-		this.wireframe = source.wireframe;
-		this.wireframeLinewidth = source.wireframeLinewidth;
-		this.wireframeLinecap = source.wireframeLinecap;
-		this.wireframeLinejoin = source.wireframeLinejoin;
-
-		this.skinning = source.skinning;
-		this.morphTargets = source.morphTargets;
-		this.morphNormals = source.morphNormals;
-
-		return this;
-
-	};
-
-	/**
-	 * @author takahirox / http://github.com/takahirox
-	 *
-	 * parameters = {
-	 *  gradientMap: new THREE.Texture( <Image> )
-	 * }
-	 */
-
-	function MeshToonMaterial( parameters ) {
-
-		MeshPhongMaterial.call( this );
-
-		this.defines = { 'TOON': '' };
-
-		this.type = 'MeshToonMaterial';
-
-		this.gradientMap = null;
-
-		this.setValues( parameters );
-
-	}
-
-	MeshToonMaterial.prototype = Object.create( MeshPhongMaterial.prototype );
-	MeshToonMaterial.prototype.constructor = MeshToonMaterial;
-
-	MeshToonMaterial.prototype.isMeshToonMaterial = true;
-
-	MeshToonMaterial.prototype.copy = function ( source ) {
-
-		MeshPhongMaterial.prototype.copy.call( this, source );
-
-		this.gradientMap = source.gradientMap;
-
-		return this;
-
-	};
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 *
-	 * parameters = {
-	 *  opacity: <float>,
-	 *
-	 *  bumpMap: new THREE.Texture( <Image> ),
-	 *  bumpScale: <float>,
-	 *
-	 *  normalMap: new THREE.Texture( <Image> ),
-	 *  normalScale: <Vector2>,
-	 *
-	 *  displacementMap: new THREE.Texture( <Image> ),
-	 *  displacementScale: <float>,
-	 *  displacementBias: <float>,
-	 *
-	 *  wireframe: <boolean>,
-	 *  wireframeLinewidth: <float>
-	 *
-	 *  skinning: <bool>,
-	 *  morphTargets: <bool>,
-	 *  morphNormals: <bool>
-	 * }
-	 */
-
-	function MeshNormalMaterial( parameters ) {
-
-		Material.call( this );
-
-		this.type = 'MeshNormalMaterial';
-
-		this.bumpMap = null;
-		this.bumpScale = 1;
-
-		this.normalMap = null;
-		this.normalScale = new Vector2( 1, 1 );
-
-		this.displacementMap = null;
-		this.displacementScale = 1;
-		this.displacementBias = 0;
-
-		this.wireframe = false;
-		this.wireframeLinewidth = 1;
-
-		this.fog = false;
-		this.lights = false;
-
-		this.skinning = false;
-		this.morphTargets = false;
-		this.morphNormals = false;
-
-		this.setValues( parameters );
-
-	}
-
-	MeshNormalMaterial.prototype = Object.create( Material.prototype );
-	MeshNormalMaterial.prototype.constructor = MeshNormalMaterial;
-
-	MeshNormalMaterial.prototype.isMeshNormalMaterial = true;
-
-	MeshNormalMaterial.prototype.copy = function ( source ) {
-
-		Material.prototype.copy.call( this, source );
-
-		this.bumpMap = source.bumpMap;
-		this.bumpScale = source.bumpScale;
-
-		this.normalMap = source.normalMap;
-		this.normalScale.copy( source.normalScale );
-
-		this.displacementMap = source.displacementMap;
-		this.displacementScale = source.displacementScale;
-		this.displacementBias = source.displacementBias;
-
-		this.wireframe = source.wireframe;
-		this.wireframeLinewidth = source.wireframeLinewidth;
-
-		this.skinning = source.skinning;
-		this.morphTargets = source.morphTargets;
-		this.morphNormals = source.morphNormals;
-
-		return this;
-
-	};
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 *
-	 * parameters = {
-	 *  color: <hex>,
-	 *  opacity: <float>,
-	 *
-	 *  map: new THREE.Texture( <Image> ),
-	 *
-	 *  lightMap: new THREE.Texture( <Image> ),
-	 *  lightMapIntensity: <float>
-	 *
-	 *  aoMap: new THREE.Texture( <Image> ),
-	 *  aoMapIntensity: <float>
-	 *
-	 *  emissive: <hex>,
-	 *  emissiveIntensity: <float>
-	 *  emissiveMap: new THREE.Texture( <Image> ),
-	 *
-	 *  specularMap: new THREE.Texture( <Image> ),
-	 *
-	 *  alphaMap: new THREE.Texture( <Image> ),
-	 *
-	 *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
-	 *  combine: THREE.Multiply,
-	 *  reflectivity: <float>,
-	 *  refractionRatio: <float>,
-	 *
-	 *  wireframe: <boolean>,
-	 *  wireframeLinewidth: <float>,
-	 *
-	 *  skinning: <bool>,
-	 *  morphTargets: <bool>,
-	 *  morphNormals: <bool>
-	 * }
-	 */
-
-	function MeshLambertMaterial( parameters ) {
-
-		Material.call( this );
-
-		this.type = 'MeshLambertMaterial';
-
-		this.color = new Color( 0xffffff ); // diffuse
-
-		this.map = null;
-
-		this.lightMap = null;
-		this.lightMapIntensity = 1.0;
-
-		this.aoMap = null;
-		this.aoMapIntensity = 1.0;
-
-		this.emissive = new Color( 0x000000 );
-		this.emissiveIntensity = 1.0;
-		this.emissiveMap = null;
-
-		this.specularMap = null;
-
-		this.alphaMap = null;
-
-		this.envMap = null;
-		this.combine = MultiplyOperation;
-		this.reflectivity = 1;
-		this.refractionRatio = 0.98;
-
-		this.wireframe = false;
-		this.wireframeLinewidth = 1;
-		this.wireframeLinecap = 'round';
-		this.wireframeLinejoin = 'round';
-
-		this.skinning = false;
-		this.morphTargets = false;
-		this.morphNormals = false;
-
-		this.setValues( parameters );
-
-	}
-
-	MeshLambertMaterial.prototype = Object.create( Material.prototype );
-	MeshLambertMaterial.prototype.constructor = MeshLambertMaterial;
-
-	MeshLambertMaterial.prototype.isMeshLambertMaterial = true;
-
-	MeshLambertMaterial.prototype.copy = function ( source ) {
-
-		Material.prototype.copy.call( this, source );
-
-		this.color.copy( source.color );
-
-		this.map = source.map;
-
-		this.lightMap = source.lightMap;
-		this.lightMapIntensity = source.lightMapIntensity;
-
-		this.aoMap = source.aoMap;
-		this.aoMapIntensity = source.aoMapIntensity;
-
-		this.emissive.copy( source.emissive );
-		this.emissiveMap = source.emissiveMap;
-		this.emissiveIntensity = source.emissiveIntensity;
-
-		this.specularMap = source.specularMap;
-
-		this.alphaMap = source.alphaMap;
-
-		this.envMap = source.envMap;
-		this.combine = source.combine;
-		this.reflectivity = source.reflectivity;
-		this.refractionRatio = source.refractionRatio;
-
-		this.wireframe = source.wireframe;
-		this.wireframeLinewidth = source.wireframeLinewidth;
-		this.wireframeLinecap = source.wireframeLinecap;
-		this.wireframeLinejoin = source.wireframeLinejoin;
-
-		this.skinning = source.skinning;
-		this.morphTargets = source.morphTargets;
-		this.morphNormals = source.morphNormals;
-
-		return this;
-
-	};
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 *
-	 * parameters = {
-	 *  color: <hex>,
-	 *  opacity: <float>,
-	 *
-	 *  linewidth: <float>,
-	 *
-	 *  scale: <float>,
-	 *  dashSize: <float>,
-	 *  gapSize: <float>
-	 * }
-	 */
-
-	function LineDashedMaterial( parameters ) {
-
-		LineBasicMaterial.call( this );
-
-		this.type = 'LineDashedMaterial';
-
-		this.scale = 1;
-		this.dashSize = 3;
-		this.gapSize = 1;
-
-		this.setValues( parameters );
-
-	}
-
-	LineDashedMaterial.prototype = Object.create( LineBasicMaterial.prototype );
-	LineDashedMaterial.prototype.constructor = LineDashedMaterial;
-
-	LineDashedMaterial.prototype.isLineDashedMaterial = true;
-
-	LineDashedMaterial.prototype.copy = function ( source ) {
-
-		LineBasicMaterial.prototype.copy.call( this, source );
-
-		this.scale = source.scale;
-		this.dashSize = source.dashSize;
-		this.gapSize = source.gapSize;
-
-		return this;
-
-	};
-
-
-
-	var Materials = Object.freeze({
-		ShadowMaterial: ShadowMaterial,
-		SpriteMaterial: SpriteMaterial,
-		RawShaderMaterial: RawShaderMaterial,
-		ShaderMaterial: ShaderMaterial,
-		PointsMaterial: PointsMaterial,
-		MeshPhysicalMaterial: MeshPhysicalMaterial,
-		MeshStandardMaterial: MeshStandardMaterial,
-		MeshPhongMaterial: MeshPhongMaterial,
-		MeshToonMaterial: MeshToonMaterial,
-		MeshNormalMaterial: MeshNormalMaterial,
-		MeshLambertMaterial: MeshLambertMaterial,
-		MeshDepthMaterial: MeshDepthMaterial,
-		MeshDistanceMaterial: MeshDistanceMaterial,
-		MeshBasicMaterial: MeshBasicMaterial,
-		LineDashedMaterial: LineDashedMaterial,
-		LineBasicMaterial: LineBasicMaterial,
-		Material: Material
-	});
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	var Cache = {
-
-		enabled: false,
-
-		files: {},
-
-		add: function ( key, file ) {
-
-			if ( this.enabled === false ) return;
-
-			// console.log( 'THREE.Cache', 'Adding key:', key );
-
-			this.files[ key ] = file;
-
-		},
-
-		get: function ( key ) {
-
-			if ( this.enabled === false ) return;
-
-			// console.log( 'THREE.Cache', 'Checking key:', key );
-
-			return this.files[ key ];
-
-		},
-
-		remove: function ( key ) {
-
-			delete this.files[ key ];
-
-		},
-
-		clear: function () {
-
-			this.files = {};
-
-		}
-
-	};
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function LoadingManager( onLoad, onProgress, onError ) {
-
-		var scope = this;
-
-		var isLoading = false;
-		var itemsLoaded = 0;
-		var itemsTotal = 0;
-		var urlModifier = undefined;
-
-		this.onStart = undefined;
-		this.onLoad = onLoad;
-		this.onProgress = onProgress;
-		this.onError = onError;
-
-		this.itemStart = function ( url ) {
-
-			itemsTotal ++;
-
-			if ( isLoading === false ) {
-
-				if ( scope.onStart !== undefined ) {
-
-					scope.onStart( url, itemsLoaded, itemsTotal );
-
-				}
-
-			}
-
-			isLoading = true;
-
-		};
-
-		this.itemEnd = function ( url ) {
-
-			itemsLoaded ++;
-
-			if ( scope.onProgress !== undefined ) {
-
-				scope.onProgress( url, itemsLoaded, itemsTotal );
-
-			}
-
-			if ( itemsLoaded === itemsTotal ) {
-
-				isLoading = false;
-
-				if ( scope.onLoad !== undefined ) {
-
-					scope.onLoad();
-
-				}
-
-			}
-
-		};
-
-		this.itemError = function ( url ) {
-
-			if ( scope.onError !== undefined ) {
-
-				scope.onError( url );
-
-			}
-
-		};
-
-		this.resolveURL = function ( url ) {
-
-			if ( urlModifier ) {
-
-				return urlModifier( url );
-
-			}
-
-			return url;
-
-		};
-
-		this.setURLModifier = function ( transform ) {
-
-			urlModifier = transform;
-			return this;
-
-		};
-
-	}
-
-	var DefaultLoadingManager = new LoadingManager();
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	var loading = {};
-
-	function FileLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-
-	}
-
-	Object.assign( FileLoader.prototype, {
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			if ( url === undefined ) url = '';
-
-			if ( this.path !== undefined ) url = this.path + url;
-
-			url = this.manager.resolveURL( url );
-
-			var scope = this;
-
-			var cached = Cache.get( url );
-
-			if ( cached !== undefined ) {
-
-				scope.manager.itemStart( url );
-
-				setTimeout( function () {
-
-					if ( onLoad ) onLoad( cached );
-
-					scope.manager.itemEnd( url );
-
-				}, 0 );
-
-				return cached;
-
-			}
-
-			// Check if request is duplicate
-
-			if ( loading[ url ] !== undefined ) {
-
-				loading[ url ].push( {
-
-					onLoad: onLoad,
-					onProgress: onProgress,
-					onError: onError
-
-				} );
-
-				return;
-
-			}
-
-			// Check for data: URI
-			var dataUriRegex = /^data:(.*?)(;base64)?,(.*)$/;
-			var dataUriRegexResult = url.match( dataUriRegex );
-
-			// Safari can not handle Data URIs through XMLHttpRequest so process manually
-			if ( dataUriRegexResult ) {
-
-				var mimeType = dataUriRegexResult[ 1 ];
-				var isBase64 = !! dataUriRegexResult[ 2 ];
-				var data = dataUriRegexResult[ 3 ];
-
-				data = window.decodeURIComponent( data );
-
-				if ( isBase64 ) data = window.atob( data );
-
-				try {
-
-					var response;
-					var responseType = ( this.responseType || '' ).toLowerCase();
-
-					switch ( responseType ) {
-
-						case 'arraybuffer':
-						case 'blob':
-
-							var view = new Uint8Array( data.length );
-
-							for ( var i = 0; i < data.length; i ++ ) {
-
-								view[ i ] = data.charCodeAt( i );
-
-							}
-
-							if ( responseType === 'blob' ) {
-
-								response = new Blob( [ view.buffer ], { type: mimeType } );
-
-							} else {
-
-								response = view.buffer;
-
-							}
-
-							break;
-
-						case 'document':
-
-							var parser = new DOMParser();
-							response = parser.parseFromString( data, mimeType );
-
-							break;
-
-						case 'json':
-
-							response = JSON.parse( data );
-
-							break;
-
-						default: // 'text' or other
-
-							response = data;
-
-							break;
-
-					}
-
-					// Wait for next browser tick like standard XMLHttpRequest event dispatching does
-					window.setTimeout( function () {
-
-						if ( onLoad ) onLoad( response );
-
-						scope.manager.itemEnd( url );
-
-					}, 0 );
-
-				} catch ( error ) {
-
-					// Wait for next browser tick like standard XMLHttpRequest event dispatching does
-					window.setTimeout( function () {
-
-						if ( onError ) onError( error );
-
-						scope.manager.itemEnd( url );
-						scope.manager.itemError( url );
-
-					}, 0 );
-
-				}
-
-			} else {
-
-				// Initialise array for duplicate requests
-
-				loading[ url ] = [];
-
-				loading[ url ].push( {
-
-					onLoad: onLoad,
-					onProgress: onProgress,
-					onError: onError
-
-				} );
-
-				var request = new XMLHttpRequest();
-
-				request.open( 'GET', url, true );
-
-				request.addEventListener( 'load', function ( event ) {
-
-					var response = this.response;
-
-					Cache.add( url, response );
-
-					var callbacks = loading[ url ];
-
-					delete loading[ url ];
-
-					if ( this.status === 200 ) {
-
-						for ( var i = 0, il = callbacks.length; i < il; i ++ ) {
-
-							var callback = callbacks[ i ];
-							if ( callback.onLoad ) callback.onLoad( response );
-
-						}
-
-						scope.manager.itemEnd( url );
-
-					} else if ( this.status === 0 ) {
-
-						// Some browsers return HTTP Status 0 when using non-http protocol
-						// e.g. 'file://' or 'data://'. Handle as success.
-
-						console.warn( 'THREE.FileLoader: HTTP Status 0 received.' );
-
-						for ( var i = 0, il = callbacks.length; i < il; i ++ ) {
-
-							var callback = callbacks[ i ];
-							if ( callback.onLoad ) callback.onLoad( response );
-
-						}
-
-						scope.manager.itemEnd( url );
-
-					} else {
-
-						for ( var i = 0, il = callbacks.length; i < il; i ++ ) {
-
-							var callback = callbacks[ i ];
-							if ( callback.onError ) callback.onError( event );
-
-						}
-
-						scope.manager.itemEnd( url );
-						scope.manager.itemError( url );
-
-					}
-
-				}, false );
-
-				request.addEventListener( 'progress', function ( event ) {
-
-					var callbacks = loading[ url ];
-
-					for ( var i = 0, il = callbacks.length; i < il; i ++ ) {
-
-						var callback = callbacks[ i ];
-						if ( callback.onProgress ) callback.onProgress( event );
-
-					}
-
-				}, false );
-
-				request.addEventListener( 'error', function ( event ) {
-
-					var callbacks = loading[ url ];
-
-					delete loading[ url ];
-
-					for ( var i = 0, il = callbacks.length; i < il; i ++ ) {
-
-						var callback = callbacks[ i ];
-						if ( callback.onError ) callback.onError( event );
-
-					}
-
-					scope.manager.itemEnd( url );
-					scope.manager.itemError( url );
-
-				}, false );
-
-				if ( this.responseType !== undefined ) request.responseType = this.responseType;
-				if ( this.withCredentials !== undefined ) request.withCredentials = this.withCredentials;
-
-				if ( request.overrideMimeType ) request.overrideMimeType( this.mimeType !== undefined ? this.mimeType : 'text/plain' );
-
-				for ( var header in this.requestHeader ) {
-
-					request.setRequestHeader( header, this.requestHeader[ header ] );
-
-				}
-
-				request.send( null );
-
-			}
-
-			scope.manager.itemStart( url );
-
-			return request;
-
-		},
-
-		setPath: function ( value ) {
-
-			this.path = value;
-			return this;
-
-		},
-
-		setResponseType: function ( value ) {
-
-			this.responseType = value;
-			return this;
-
-		},
-
-		setWithCredentials: function ( value ) {
-
-			this.withCredentials = value;
-			return this;
-
-		},
-
-		setMimeType: function ( value ) {
-
-			this.mimeType = value;
-			return this;
-
-		},
-
-		setRequestHeader: function ( value ) {
-
-			this.requestHeader = value;
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 *
-	 * Abstract Base class to block based textures loader (dds, pvr, ...)
-	 */
-
-	function CompressedTextureLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-
-		// override in sub classes
-		this._parser = null;
-
-	}
-
-	Object.assign( CompressedTextureLoader.prototype, {
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			var scope = this;
-
-			var images = [];
-
-			var texture = new CompressedTexture();
-			texture.image = images;
-
-			var loader = new FileLoader( this.manager );
-			loader.setPath( this.path );
-			loader.setResponseType( 'arraybuffer' );
-
-			function loadTexture( i ) {
-
-				loader.load( url[ i ], function ( buffer ) {
-
-					var texDatas = scope._parser( buffer, true );
-
-					images[ i ] = {
-						width: texDatas.width,
-						height: texDatas.height,
-						format: texDatas.format,
-						mipmaps: texDatas.mipmaps
-					};
-
-					loaded += 1;
-
-					if ( loaded === 6 ) {
-
-						if ( texDatas.mipmapCount === 1 )
-							texture.minFilter = LinearFilter;
-
-						texture.format = texDatas.format;
-						texture.needsUpdate = true;
-
-						if ( onLoad ) onLoad( texture );
-
-					}
-
-				}, onProgress, onError );
-
-			}
-
-			if ( Array.isArray( url ) ) {
-
-				var loaded = 0;
-
-				for ( var i = 0, il = url.length; i < il; ++ i ) {
-
-					loadTexture( i );
-
-				}
-
-			} else {
-
-				// compressed cubemap texture stored in a single DDS file
-
-				loader.load( url, function ( buffer ) {
-
-					var texDatas = scope._parser( buffer, true );
-
-					if ( texDatas.isCubemap ) {
-
-						var faces = texDatas.mipmaps.length / texDatas.mipmapCount;
-
-						for ( var f = 0; f < faces; f ++ ) {
-
-							images[ f ] = { mipmaps: [] };
-
-							for ( var i = 0; i < texDatas.mipmapCount; i ++ ) {
-
-								images[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );
-								images[ f ].format = texDatas.format;
-								images[ f ].width = texDatas.width;
-								images[ f ].height = texDatas.height;
-
-							}
-
-						}
-
-					} else {
-
-						texture.image.width = texDatas.width;
-						texture.image.height = texDatas.height;
-						texture.mipmaps = texDatas.mipmaps;
-
-					}
-
-					if ( texDatas.mipmapCount === 1 ) {
-
-						texture.minFilter = LinearFilter;
-
-					}
-
-					texture.format = texDatas.format;
-					texture.needsUpdate = true;
-
-					if ( onLoad ) onLoad( texture );
-
-				}, onProgress, onError );
-
-			}
-
-			return texture;
-
-		},
-
-		setPath: function ( value ) {
-
-			this.path = value;
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author Nikos M. / https://github.com/foo123/
-	 *
-	 * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)
-	 */
-
-	function DataTextureLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-
-		// override in sub classes
-		this._parser = null;
-
-	}
-
-	Object.assign( DataTextureLoader.prototype, {
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			var scope = this;
-
-			var texture = new DataTexture();
-
-			var loader = new FileLoader( this.manager );
-			loader.setResponseType( 'arraybuffer' );
-
-			loader.load( url, function ( buffer ) {
-
-				var texData = scope._parser( buffer );
-
-				if ( ! texData ) return;
-
-				if ( undefined !== texData.image ) {
-
-					texture.image = texData.image;
-
-				} else if ( undefined !== texData.data ) {
-
-					texture.image.width = texData.width;
-					texture.image.height = texData.height;
-					texture.image.data = texData.data;
-
-				}
-
-				texture.wrapS = undefined !== texData.wrapS ? texData.wrapS : ClampToEdgeWrapping;
-				texture.wrapT = undefined !== texData.wrapT ? texData.wrapT : ClampToEdgeWrapping;
-
-				texture.magFilter = undefined !== texData.magFilter ? texData.magFilter : LinearFilter;
-				texture.minFilter = undefined !== texData.minFilter ? texData.minFilter : LinearMipMapLinearFilter;
-
-				texture.anisotropy = undefined !== texData.anisotropy ? texData.anisotropy : 1;
-
-				if ( undefined !== texData.format ) {
-
-					texture.format = texData.format;
-
-				}
-				if ( undefined !== texData.type ) {
-
-					texture.type = texData.type;
-
-				}
-
-				if ( undefined !== texData.mipmaps ) {
-
-					texture.mipmaps = texData.mipmaps;
-
-				}
-
-				if ( 1 === texData.mipmapCount ) {
-
-					texture.minFilter = LinearFilter;
-
-				}
-
-				texture.needsUpdate = true;
-
-				if ( onLoad ) onLoad( texture, texData );
-
-			}, onProgress, onError );
-
-
-			return texture;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function ImageLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-
-	}
-
-	Object.assign( ImageLoader.prototype, {
-
-		crossOrigin: 'Anonymous',
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			if ( url === undefined ) url = '';
-
-			if ( this.path !== undefined ) url = this.path + url;
-
-			url = this.manager.resolveURL( url );
-
-			var scope = this;
-
-			var cached = Cache.get( url );
-
-			if ( cached !== undefined ) {
-
-				scope.manager.itemStart( url );
-
-				setTimeout( function () {
-
-					if ( onLoad ) onLoad( cached );
-
-					scope.manager.itemEnd( url );
-
-				}, 0 );
-
-				return cached;
-
-			}
-
-			var image = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'img' );
-
-			image.addEventListener( 'load', function () {
-
-				Cache.add( url, this );
-
-				if ( onLoad ) onLoad( this );
-
-				scope.manager.itemEnd( url );
-
-			}, false );
-
-			/*
-			image.addEventListener( 'progress', function ( event ) {
-
-				if ( onProgress ) onProgress( event );
-
-			}, false );
-			*/
-
-			image.addEventListener( 'error', function ( event ) {
-
-				if ( onError ) onError( event );
-
-				scope.manager.itemEnd( url );
-				scope.manager.itemError( url );
-
-			}, false );
-
-			if ( url.substr( 0, 5 ) !== 'data:' ) {
-
-				if ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;
-
-			}
-
-			scope.manager.itemStart( url );
-
-			image.src = url;
-
-			return image;
-
-		},
-
-		setCrossOrigin: function ( value ) {
-
-			this.crossOrigin = value;
-			return this;
-
-		},
-
-		setPath: function ( value ) {
-
-			this.path = value;
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function CubeTextureLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-
-	}
-
-	Object.assign( CubeTextureLoader.prototype, {
-
-		crossOrigin: 'Anonymous',
-
-		load: function ( urls, onLoad, onProgress, onError ) {
-
-			var texture = new CubeTexture();
-
-			var loader = new ImageLoader( this.manager );
-			loader.setCrossOrigin( this.crossOrigin );
-			loader.setPath( this.path );
-
-			var loaded = 0;
-
-			function loadTexture( i ) {
-
-				loader.load( urls[ i ], function ( image ) {
-
-					texture.images[ i ] = image;
-
-					loaded ++;
-
-					if ( loaded === 6 ) {
-
-						texture.needsUpdate = true;
-
-						if ( onLoad ) onLoad( texture );
-
-					}
-
-				}, undefined, onError );
-
-			}
-
-			for ( var i = 0; i < urls.length; ++ i ) {
-
-				loadTexture( i );
-
-			}
-
-			return texture;
-
-		},
-
-		setCrossOrigin: function ( value ) {
-
-			this.crossOrigin = value;
-			return this;
-
-		},
-
-		setPath: function ( value ) {
-
-			this.path = value;
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function TextureLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-
-	}
-
-	Object.assign( TextureLoader.prototype, {
-
-		crossOrigin: 'Anonymous',
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			var texture = new Texture();
-
-			var loader = new ImageLoader( this.manager );
-			loader.setCrossOrigin( this.crossOrigin );
-			loader.setPath( this.path );
-
-			loader.load( url, function ( image ) {
-
-				texture.image = image;
-
-				// JPEGs can't have an alpha channel, so memory can be saved by storing them as RGB.
-				var isJPEG = url.search( /\.(jpg|jpeg)$/ ) > 0 || url.search( /^data\:image\/jpeg/ ) === 0;
-
-				texture.format = isJPEG ? RGBFormat : RGBAFormat;
-				texture.needsUpdate = true;
-
-				if ( onLoad !== undefined ) {
-
-					onLoad( texture );
-
-				}
-
-			}, onProgress, onError );
-
-			return texture;
-
-		},
-
-		setCrossOrigin: function ( value ) {
-
-			this.crossOrigin = value;
-			return this;
-
-		},
-
-		setPath: function ( value ) {
-
-			this.path = value;
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 * Extensible curve object
-	 *
-	 * Some common of curve methods:
-	 * .getPoint( t, optionalTarget ), .getTangent( t )
-	 * .getPointAt( u, optionalTarget ), .getTangentAt( u )
-	 * .getPoints(), .getSpacedPoints()
-	 * .getLength()
-	 * .updateArcLengths()
-	 *
-	 * This following curves inherit from THREE.Curve:
-	 *
-	 * -- 2D curves --
-	 * THREE.ArcCurve
-	 * THREE.CubicBezierCurve
-	 * THREE.EllipseCurve
-	 * THREE.LineCurve
-	 * THREE.QuadraticBezierCurve
-	 * THREE.SplineCurve
-	 *
-	 * -- 3D curves --
-	 * THREE.CatmullRomCurve3
-	 * THREE.CubicBezierCurve3
-	 * THREE.LineCurve3
-	 * THREE.QuadraticBezierCurve3
-	 *
-	 * A series of curves can be represented as a THREE.CurvePath.
-	 *
-	 **/
-
-	/**************************************************************
-	 *	Abstract Curve base class
-	 **************************************************************/
-
-	function Curve() {
-
-		this.type = 'Curve';
-
-		this.arcLengthDivisions = 200;
-
-	}
-
-	Object.assign( Curve.prototype, {
-
-		// Virtual base class method to overwrite and implement in subclasses
-		//	- t [0 .. 1]
-
-		getPoint: function ( /* t, optionalTarget */ ) {
-
-			console.warn( 'THREE.Curve: .getPoint() not implemented.' );
-			return null;
-
-		},
-
-		// Get point at relative position in curve according to arc length
-		// - u [0 .. 1]
-
-		getPointAt: function ( u, optionalTarget ) {
-
-			var t = this.getUtoTmapping( u );
-			return this.getPoint( t, optionalTarget );
-
-		},
-
-		// Get sequence of points using getPoint( t )
-
-		getPoints: function ( divisions ) {
-
-			if ( divisions === undefined ) divisions = 5;
-
-			var points = [];
-
-			for ( var d = 0; d <= divisions; d ++ ) {
-
-				points.push( this.getPoint( d / divisions ) );
-
-			}
-
-			return points;
-
-		},
-
-		// Get sequence of points using getPointAt( u )
-
-		getSpacedPoints: function ( divisions ) {
-
-			if ( divisions === undefined ) divisions = 5;
-
-			var points = [];
-
-			for ( var d = 0; d <= divisions; d ++ ) {
-
-				points.push( this.getPointAt( d / divisions ) );
-
-			}
-
-			return points;
-
-		},
-
-		// Get total curve arc length
-
-		getLength: function () {
-
-			var lengths = this.getLengths();
-			return lengths[ lengths.length - 1 ];
-
-		},
-
-		// Get list of cumulative segment lengths
-
-		getLengths: function ( divisions ) {
-
-			if ( divisions === undefined ) divisions = this.arcLengthDivisions;
-
-			if ( this.cacheArcLengths &&
-				( this.cacheArcLengths.length === divisions + 1 ) &&
-				! this.needsUpdate ) {
-
-				return this.cacheArcLengths;
-
-			}
-
-			this.needsUpdate = false;
-
-			var cache = [];
-			var current, last = this.getPoint( 0 );
-			var p, sum = 0;
-
-			cache.push( 0 );
-
-			for ( p = 1; p <= divisions; p ++ ) {
-
-				current = this.getPoint( p / divisions );
-				sum += current.distanceTo( last );
-				cache.push( sum );
-				last = current;
-
-			}
-
-			this.cacheArcLengths = cache;
-
-			return cache; // { sums: cache, sum: sum }; Sum is in the last element.
-
-		},
-
-		updateArcLengths: function () {
-
-			this.needsUpdate = true;
-			this.getLengths();
-
-		},
-
-		// Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant
-
-		getUtoTmapping: function ( u, distance ) {
-
-			var arcLengths = this.getLengths();
-
-			var i = 0, il = arcLengths.length;
-
-			var targetArcLength; // The targeted u distance value to get
-
-			if ( distance ) {
-
-				targetArcLength = distance;
-
-			} else {
-
-				targetArcLength = u * arcLengths[ il - 1 ];
-
-			}
-
-			// binary search for the index with largest value smaller than target u distance
-
-			var low = 0, high = il - 1, comparison;
-
-			while ( low <= high ) {
-
-				i = Math.floor( low + ( high - low ) / 2 ); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats
-
-				comparison = arcLengths[ i ] - targetArcLength;
-
-				if ( comparison < 0 ) {
-
-					low = i + 1;
-
-				} else if ( comparison > 0 ) {
-
-					high = i - 1;
-
-				} else {
-
-					high = i;
-					break;
-
-					// DONE
-
-				}
-
-			}
-
-			i = high;
-
-			if ( arcLengths[ i ] === targetArcLength ) {
-
-				return i / ( il - 1 );
-
-			}
-
-			// we could get finer grain at lengths, or use simple interpolation between two points
-
-			var lengthBefore = arcLengths[ i ];
-			var lengthAfter = arcLengths[ i + 1 ];
-
-			var segmentLength = lengthAfter - lengthBefore;
-
-			// determine where we are between the 'before' and 'after' points
-
-			var segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;
-
-			// add that fractional amount to t
-
-			var t = ( i + segmentFraction ) / ( il - 1 );
-
-			return t;
-
-		},
-
-		// Returns a unit vector tangent at t
-		// In case any sub curve does not implement its tangent derivation,
-		// 2 points a small delta apart will be used to find its gradient
-		// which seems to give a reasonable approximation
-
-		getTangent: function ( t ) {
-
-			var delta = 0.0001;
-			var t1 = t - delta;
-			var t2 = t + delta;
-
-			// Capping in case of danger
-
-			if ( t1 < 0 ) t1 = 0;
-			if ( t2 > 1 ) t2 = 1;
-
-			var pt1 = this.getPoint( t1 );
-			var pt2 = this.getPoint( t2 );
-
-			var vec = pt2.clone().sub( pt1 );
-			return vec.normalize();
-
-		},
-
-		getTangentAt: function ( u ) {
-
-			var t = this.getUtoTmapping( u );
-			return this.getTangent( t );
-
-		},
-
-		computeFrenetFrames: function ( segments, closed ) {
-
-			// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf
-
-			var normal = new Vector3();
-
-			var tangents = [];
-			var normals = [];
-			var binormals = [];
-
-			var vec = new Vector3();
-			var mat = new Matrix4();
-
-			var i, u, theta;
-
-			// compute the tangent vectors for each segment on the curve
-
-			for ( i = 0; i <= segments; i ++ ) {
-
-				u = i / segments;
-
-				tangents[ i ] = this.getTangentAt( u );
-				tangents[ i ].normalize();
-
-			}
-
-			// select an initial normal vector perpendicular to the first tangent vector,
-			// and in the direction of the minimum tangent xyz component
-
-			normals[ 0 ] = new Vector3();
-			binormals[ 0 ] = new Vector3();
-			var min = Number.MAX_VALUE;
-			var tx = Math.abs( tangents[ 0 ].x );
-			var ty = Math.abs( tangents[ 0 ].y );
-			var tz = Math.abs( tangents[ 0 ].z );
-
-			if ( tx <= min ) {
-
-				min = tx;
-				normal.set( 1, 0, 0 );
-
-			}
-
-			if ( ty <= min ) {
-
-				min = ty;
-				normal.set( 0, 1, 0 );
-
-			}
-
-			if ( tz <= min ) {
-
-				normal.set( 0, 0, 1 );
-
-			}
-
-			vec.crossVectors( tangents[ 0 ], normal ).normalize();
-
-			normals[ 0 ].crossVectors( tangents[ 0 ], vec );
-			binormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );
-
-
-			// compute the slowly-varying normal and binormal vectors for each segment on the curve
-
-			for ( i = 1; i <= segments; i ++ ) {
-
-				normals[ i ] = normals[ i - 1 ].clone();
-
-				binormals[ i ] = binormals[ i - 1 ].clone();
-
-				vec.crossVectors( tangents[ i - 1 ], tangents[ i ] );
-
-				if ( vec.length() > Number.EPSILON ) {
-
-					vec.normalize();
-
-					theta = Math.acos( _Math.clamp( tangents[ i - 1 ].dot( tangents[ i ] ), - 1, 1 ) ); // clamp for floating pt errors
-
-					normals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );
-
-				}
-
-				binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );
-
-			}
-
-			// if the curve is closed, postprocess the vectors so the first and last normal vectors are the same
-
-			if ( closed === true ) {
-
-				theta = Math.acos( _Math.clamp( normals[ 0 ].dot( normals[ segments ] ), - 1, 1 ) );
-				theta /= segments;
-
-				if ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ segments ] ) ) > 0 ) {
-
-					theta = - theta;
-
-				}
-
-				for ( i = 1; i <= segments; i ++ ) {
-
-					// twist a little...
-					normals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );
-					binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );
-
-				}
-
-			}
-
-			return {
-				tangents: tangents,
-				normals: normals,
-				binormals: binormals
-			};
-
-		},
-
-		clone: function () {
-
-			return new this.constructor().copy( this );
-
-		},
-
-		copy: function ( source ) {
-
-			this.arcLengthDivisions = source.arcLengthDivisions;
-
-			return this;
-
-		},
-
-		toJSON: function () {
-
-			var data = {
-				metadata: {
-					version: 4.5,
-					type: 'Curve',
-					generator: 'Curve.toJSON'
-				}
-			};
-
-			data.arcLengthDivisions = this.arcLengthDivisions;
-			data.type = this.type;
-
-			return data;
-
-		},
-
-		fromJSON: function ( json ) {
-
-			this.arcLengthDivisions = json.arcLengthDivisions;
-
-			return this;
-
-		}
-
-	} );
-
-	function EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
-
-		Curve.call( this );
-
-		this.type = 'EllipseCurve';
-
-		this.aX = aX || 0;
-		this.aY = aY || 0;
-
-		this.xRadius = xRadius || 1;
-		this.yRadius = yRadius || 1;
-
-		this.aStartAngle = aStartAngle || 0;
-		this.aEndAngle = aEndAngle || 2 * Math.PI;
-
-		this.aClockwise = aClockwise || false;
-
-		this.aRotation = aRotation || 0;
-
-	}
-
-	EllipseCurve.prototype = Object.create( Curve.prototype );
-	EllipseCurve.prototype.constructor = EllipseCurve;
-
-	EllipseCurve.prototype.isEllipseCurve = true;
-
-	EllipseCurve.prototype.getPoint = function ( t, optionalTarget ) {
-
-		var point = optionalTarget || new Vector2();
-
-		var twoPi = Math.PI * 2;
-		var deltaAngle = this.aEndAngle - this.aStartAngle;
-		var samePoints = Math.abs( deltaAngle ) < Number.EPSILON;
-
-		// ensures that deltaAngle is 0 .. 2 PI
-		while ( deltaAngle < 0 ) deltaAngle += twoPi;
-		while ( deltaAngle > twoPi ) deltaAngle -= twoPi;
-
-		if ( deltaAngle < Number.EPSILON ) {
-
-			if ( samePoints ) {
-
-				deltaAngle = 0;
-
-			} else {
-
-				deltaAngle = twoPi;
-
-			}
-
-		}
-
-		if ( this.aClockwise === true && ! samePoints ) {
-
-			if ( deltaAngle === twoPi ) {
-
-				deltaAngle = - twoPi;
-
-			} else {
-
-				deltaAngle = deltaAngle - twoPi;
-
-			}
-
-		}
-
-		var angle = this.aStartAngle + t * deltaAngle;
-		var x = this.aX + this.xRadius * Math.cos( angle );
-		var y = this.aY + this.yRadius * Math.sin( angle );
-
-		if ( this.aRotation !== 0 ) {
-
-			var cos = Math.cos( this.aRotation );
-			var sin = Math.sin( this.aRotation );
-
-			var tx = x - this.aX;
-			var ty = y - this.aY;
-
-			// Rotate the point about the center of the ellipse.
-			x = tx * cos - ty * sin + this.aX;
-			y = tx * sin + ty * cos + this.aY;
-
-		}
-
-		return point.set( x, y );
-
-	};
-
-	EllipseCurve.prototype.copy = function ( source ) {
-
-		Curve.prototype.copy.call( this, source );
-
-		this.aX = source.aX;
-		this.aY = source.aY;
-
-		this.xRadius = source.xRadius;
-		this.yRadius = source.yRadius;
-
-		this.aStartAngle = source.aStartAngle;
-		this.aEndAngle = source.aEndAngle;
-
-		this.aClockwise = source.aClockwise;
-
-		this.aRotation = source.aRotation;
-
-		return this;
-
-	};
-
-
-	EllipseCurve.prototype.toJSON = function () {
-
-		var data = Curve.prototype.toJSON.call( this );
-
-		data.aX = this.aX;
-		data.aY = this.aY;
-
-		data.xRadius = this.xRadius;
-		data.yRadius = this.yRadius;
-
-		data.aStartAngle = this.aStartAngle;
-		data.aEndAngle = this.aEndAngle;
-
-		data.aClockwise = this.aClockwise;
-
-		data.aRotation = this.aRotation;
-
-		return data;
-
-	};
-
-	EllipseCurve.prototype.fromJSON = function ( json ) {
-
-		Curve.prototype.fromJSON.call( this, json );
-
-		this.aX = json.aX;
-		this.aY = json.aY;
-
-		this.xRadius = json.xRadius;
-		this.yRadius = json.yRadius;
-
-		this.aStartAngle = json.aStartAngle;
-		this.aEndAngle = json.aEndAngle;
-
-		this.aClockwise = json.aClockwise;
-
-		this.aRotation = json.aRotation;
-
-		return this;
-
-	};
-
-	function ArcCurve( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
-
-		EllipseCurve.call( this, aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );
-
-		this.type = 'ArcCurve';
-
-	}
-
-	ArcCurve.prototype = Object.create( EllipseCurve.prototype );
-	ArcCurve.prototype.constructor = ArcCurve;
-
-	ArcCurve.prototype.isArcCurve = true;
-
-	/**
-	 * @author zz85 https://github.com/zz85
-	 *
-	 * Centripetal CatmullRom Curve - which is useful for avoiding
-	 * cusps and self-intersections in non-uniform catmull rom curves.
-	 * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
-	 *
-	 * curve.type accepts centripetal(default), chordal and catmullrom
-	 * curve.tension is used for catmullrom which defaults to 0.5
-	 */
-
-
-	/*
-	Based on an optimized c++ solution in
-	 - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/
-	 - http://ideone.com/NoEbVM
-
-	This CubicPoly class could be used for reusing some variables and calculations,
-	but for three.js curve use, it could be possible inlined and flatten into a single function call
-	which can be placed in CurveUtils.
-	*/
-
-	function CubicPoly() {
-
-		var c0 = 0, c1 = 0, c2 = 0, c3 = 0;
-
-		/*
-		 * Compute coefficients for a cubic polynomial
-		 *   p(s) = c0 + c1*s + c2*s^2 + c3*s^3
-		 * such that
-		 *   p(0) = x0, p(1) = x1
-		 *  and
-		 *   p'(0) = t0, p'(1) = t1.
-		 */
-		function init( x0, x1, t0, t1 ) {
-
-			c0 = x0;
-			c1 = t0;
-			c2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;
-			c3 = 2 * x0 - 2 * x1 + t0 + t1;
-
-		}
-
-		return {
-
-			initCatmullRom: function ( x0, x1, x2, x3, tension ) {
-
-				init( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );
-
-			},
-
-			initNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {
-
-				// compute tangents when parameterized in [t1,t2]
-				var t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;
-				var t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;
-
-				// rescale tangents for parametrization in [0,1]
-				t1 *= dt1;
-				t2 *= dt1;
-
-				init( x1, x2, t1, t2 );
-
-			},
-
-			calc: function ( t ) {
-
-				var t2 = t * t;
-				var t3 = t2 * t;
-				return c0 + c1 * t + c2 * t2 + c3 * t3;
-
-			}
-
-		};
-
-	}
-
-	//
-
-	var tmp = new Vector3();
-	var px = new CubicPoly();
-	var py = new CubicPoly();
-	var pz = new CubicPoly();
-
-	function CatmullRomCurve3( points, closed, curveType, tension ) {
-
-		Curve.call( this );
-
-		this.type = 'CatmullRomCurve3';
-
-		this.points = points || [];
-		this.closed = closed || false;
-		this.curveType = curveType || 'centripetal';
-		this.tension = tension || 0.5;
-
-	}
-
-	CatmullRomCurve3.prototype = Object.create( Curve.prototype );
-	CatmullRomCurve3.prototype.constructor = CatmullRomCurve3;
-
-	CatmullRomCurve3.prototype.isCatmullRomCurve3 = true;
-
-	CatmullRomCurve3.prototype.getPoint = function ( t, optionalTarget ) {
-
-		var point = optionalTarget || new Vector3();
-
-		var points = this.points;
-		var l = points.length;
-
-		var p = ( l - ( this.closed ? 0 : 1 ) ) * t;
-		var intPoint = Math.floor( p );
-		var weight = p - intPoint;
-
-		if ( this.closed ) {
-
-			intPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / points.length ) + 1 ) * points.length;
-
-		} else if ( weight === 0 && intPoint === l - 1 ) {
-
-			intPoint = l - 2;
-			weight = 1;
-
-		}
-
-		var p0, p1, p2, p3; // 4 points
-
-		if ( this.closed || intPoint > 0 ) {
-
-			p0 = points[ ( intPoint - 1 ) % l ];
-
-		} else {
-
-			// extrapolate first point
-			tmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );
-			p0 = tmp;
-
-		}
-
-		p1 = points[ intPoint % l ];
-		p2 = points[ ( intPoint + 1 ) % l ];
-
-		if ( this.closed || intPoint + 2 < l ) {
-
-			p3 = points[ ( intPoint + 2 ) % l ];
-
-		} else {
-
-			// extrapolate last point
-			tmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );
-			p3 = tmp;
-
-		}
-
-		if ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {
-
-			// init Centripetal / Chordal Catmull-Rom
-			var pow = this.curveType === 'chordal' ? 0.5 : 0.25;
-			var dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );
-			var dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );
-			var dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );
-
-			// safety check for repeated points
-			if ( dt1 < 1e-4 ) dt1 = 1.0;
-			if ( dt0 < 1e-4 ) dt0 = dt1;
-			if ( dt2 < 1e-4 ) dt2 = dt1;
-
-			px.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );
-			py.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );
-			pz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );
-
-		} else if ( this.curveType === 'catmullrom' ) {
-
-			px.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );
-			py.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );
-			pz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );
-
-		}
-
-		point.set(
-			px.calc( weight ),
-			py.calc( weight ),
-			pz.calc( weight )
-		);
-
-		return point;
-
-	};
-
-	CatmullRomCurve3.prototype.copy = function ( source ) {
-
-		Curve.prototype.copy.call( this, source );
-
-		this.points = [];
-
-		for ( var i = 0, l = source.points.length; i < l; i ++ ) {
-
-			var point = source.points[ i ];
-
-			this.points.push( point.clone() );
-
-		}
-
-		this.closed = source.closed;
-		this.curveType = source.curveType;
-		this.tension = source.tension;
-
-		return this;
-
-	};
-
-	CatmullRomCurve3.prototype.toJSON = function () {
-
-		var data = Curve.prototype.toJSON.call( this );
-
-		data.points = [];
-
-		for ( var i = 0, l = this.points.length; i < l; i ++ ) {
-
-			var point = this.points[ i ];
-			data.points.push( point.toArray() );
-
-		}
-
-		data.closed = this.closed;
-		data.curveType = this.curveType;
-		data.tension = this.tension;
-
-		return data;
-
-	};
-
-	CatmullRomCurve3.prototype.fromJSON = function ( json ) {
-
-		Curve.prototype.fromJSON.call( this, json );
-
-		this.points = [];
-
-		for ( var i = 0, l = json.points.length; i < l; i ++ ) {
-
-			var point = json.points[ i ];
-			this.points.push( new Vector3().fromArray( point ) );
-
-		}
-
-		this.closed = json.closed;
-		this.curveType = json.curveType;
-		this.tension = json.tension;
-
-		return this;
-
-	};
-
-	/**
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 *
-	 * Bezier Curves formulas obtained from
-	 * http://en.wikipedia.org/wiki/Bézier_curve
-	 */
-
-	function CatmullRom( t, p0, p1, p2, p3 ) {
-
-		var v0 = ( p2 - p0 ) * 0.5;
-		var v1 = ( p3 - p1 ) * 0.5;
-		var t2 = t * t;
-		var t3 = t * t2;
-		return ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;
-
-	}
-
-	//
-
-	function QuadraticBezierP0( t, p ) {
-
-		var k = 1 - t;
-		return k * k * p;
-
-	}
-
-	function QuadraticBezierP1( t, p ) {
-
-		return 2 * ( 1 - t ) * t * p;
-
-	}
-
-	function QuadraticBezierP2( t, p ) {
-
-		return t * t * p;
-
-	}
-
-	function QuadraticBezier( t, p0, p1, p2 ) {
-
-		return QuadraticBezierP0( t, p0 ) + QuadraticBezierP1( t, p1 ) +
-			QuadraticBezierP2( t, p2 );
-
-	}
-
-	//
-
-	function CubicBezierP0( t, p ) {
-
-		var k = 1 - t;
-		return k * k * k * p;
-
-	}
-
-	function CubicBezierP1( t, p ) {
-
-		var k = 1 - t;
-		return 3 * k * k * t * p;
-
-	}
-
-	function CubicBezierP2( t, p ) {
-
-		return 3 * ( 1 - t ) * t * t * p;
-
-	}
-
-	function CubicBezierP3( t, p ) {
-
-		return t * t * t * p;
-
-	}
-
-	function CubicBezier( t, p0, p1, p2, p3 ) {
-
-		return CubicBezierP0( t, p0 ) + CubicBezierP1( t, p1 ) + CubicBezierP2( t, p2 ) +
-			CubicBezierP3( t, p3 );
-
-	}
-
-	function CubicBezierCurve( v0, v1, v2, v3 ) {
-
-		Curve.call( this );
-
-		this.type = 'CubicBezierCurve';
-
-		this.v0 = v0 || new Vector2();
-		this.v1 = v1 || new Vector2();
-		this.v2 = v2 || new Vector2();
-		this.v3 = v3 || new Vector2();
-
-	}
-
-	CubicBezierCurve.prototype = Object.create( Curve.prototype );
-	CubicBezierCurve.prototype.constructor = CubicBezierCurve;
-
-	CubicBezierCurve.prototype.isCubicBezierCurve = true;
-
-	CubicBezierCurve.prototype.getPoint = function ( t, optionalTarget ) {
-
-		var point = optionalTarget || new Vector2();
-
-		var v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
-
-		point.set(
-			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
-			CubicBezier( t, v0.y, v1.y, v2.y, v3.y )
-		);
-
-		return point;
-
-	};
-
-	CubicBezierCurve.prototype.copy = function ( source ) {
-
-		Curve.prototype.copy.call( this, source );
-
-		this.v0.copy( source.v0 );
-		this.v1.copy( source.v1 );
-		this.v2.copy( source.v2 );
-		this.v3.copy( source.v3 );
-
-		return this;
-
-	};
-
-	CubicBezierCurve.prototype.toJSON = function () {
-
-		var data = Curve.prototype.toJSON.call( this );
-
-		data.v0 = this.v0.toArray();
-		data.v1 = this.v1.toArray();
-		data.v2 = this.v2.toArray();
-		data.v3 = this.v3.toArray();
-
-		return data;
-
-	};
-
-	CubicBezierCurve.prototype.fromJSON = function ( json ) {
-
-		Curve.prototype.fromJSON.call( this, json );
-
-		this.v0.fromArray( json.v0 );
-		this.v1.fromArray( json.v1 );
-		this.v2.fromArray( json.v2 );
-		this.v3.fromArray( json.v3 );
-
-		return this;
-
-	};
-
-	function CubicBezierCurve3( v0, v1, v2, v3 ) {
-
-		Curve.call( this );
-
-		this.type = 'CubicBezierCurve3';
-
-		this.v0 = v0 || new Vector3();
-		this.v1 = v1 || new Vector3();
-		this.v2 = v2 || new Vector3();
-		this.v3 = v3 || new Vector3();
-
-	}
-
-	CubicBezierCurve3.prototype = Object.create( Curve.prototype );
-	CubicBezierCurve3.prototype.constructor = CubicBezierCurve3;
-
-	CubicBezierCurve3.prototype.isCubicBezierCurve3 = true;
-
-	CubicBezierCurve3.prototype.getPoint = function ( t, optionalTarget ) {
-
-		var point = optionalTarget || new Vector3();
-
-		var v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
-
-		point.set(
-			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
-			CubicBezier( t, v0.y, v1.y, v2.y, v3.y ),
-			CubicBezier( t, v0.z, v1.z, v2.z, v3.z )
-		);
-
-		return point;
-
-	};
-
-	CubicBezierCurve3.prototype.copy = function ( source ) {
-
-		Curve.prototype.copy.call( this, source );
-
-		this.v0.copy( source.v0 );
-		this.v1.copy( source.v1 );
-		this.v2.copy( source.v2 );
-		this.v3.copy( source.v3 );
-
-		return this;
-
-	};
-
-	CubicBezierCurve3.prototype.toJSON = function () {
-
-		var data = Curve.prototype.toJSON.call( this );
-
-		data.v0 = this.v0.toArray();
-		data.v1 = this.v1.toArray();
-		data.v2 = this.v2.toArray();
-		data.v3 = this.v3.toArray();
-
-		return data;
-
-	};
-
-	CubicBezierCurve3.prototype.fromJSON = function ( json ) {
-
-		Curve.prototype.fromJSON.call( this, json );
-
-		this.v0.fromArray( json.v0 );
-		this.v1.fromArray( json.v1 );
-		this.v2.fromArray( json.v2 );
-		this.v3.fromArray( json.v3 );
-
-		return this;
-
-	};
-
-	function LineCurve( v1, v2 ) {
-
-		Curve.call( this );
-
-		this.type = 'LineCurve';
-
-		this.v1 = v1 || new Vector2();
-		this.v2 = v2 || new Vector2();
-
-	}
-
-	LineCurve.prototype = Object.create( Curve.prototype );
-	LineCurve.prototype.constructor = LineCurve;
-
-	LineCurve.prototype.isLineCurve = true;
-
-	LineCurve.prototype.getPoint = function ( t, optionalTarget ) {
-
-		var point = optionalTarget || new Vector2();
-
-		if ( t === 1 ) {
-
-			point.copy( this.v2 );
-
-		} else {
-
-			point.copy( this.v2 ).sub( this.v1 );
-			point.multiplyScalar( t ).add( this.v1 );
-
-		}
-
-		return point;
-
-	};
-
-	// Line curve is linear, so we can overwrite default getPointAt
-
-	LineCurve.prototype.getPointAt = function ( u, optionalTarget ) {
-
-		return this.getPoint( u, optionalTarget );
-
-	};
-
-	LineCurve.prototype.getTangent = function ( /* t */ ) {
-
-		var tangent = this.v2.clone().sub( this.v1 );
-
-		return tangent.normalize();
-
-	};
-
-	LineCurve.prototype.copy = function ( source ) {
-
-		Curve.prototype.copy.call( this, source );
-
-		this.v1.copy( source.v1 );
-		this.v2.copy( source.v2 );
-
-		return this;
-
-	};
-
-	LineCurve.prototype.toJSON = function () {
-
-		var data = Curve.prototype.toJSON.call( this );
-
-		data.v1 = this.v1.toArray();
-		data.v2 = this.v2.toArray();
-
-		return data;
-
-	};
-
-	LineCurve.prototype.fromJSON = function ( json ) {
-
-		Curve.prototype.fromJSON.call( this, json );
-
-		this.v1.fromArray( json.v1 );
-		this.v2.fromArray( json.v2 );
-
-		return this;
-
-	};
-
-	function LineCurve3( v1, v2 ) {
-
-		Curve.call( this );
-
-		this.type = 'LineCurve3';
-
-		this.v1 = v1 || new Vector3();
-		this.v2 = v2 || new Vector3();
-
-	}
-
-	LineCurve3.prototype = Object.create( Curve.prototype );
-	LineCurve3.prototype.constructor = LineCurve3;
-
-	LineCurve3.prototype.isLineCurve3 = true;
-
-	LineCurve3.prototype.getPoint = function ( t, optionalTarget ) {
-
-		var point = optionalTarget || new Vector3();
-
-		if ( t === 1 ) {
-
-			point.copy( this.v2 );
-
-		} else {
-
-			point.copy( this.v2 ).sub( this.v1 );
-			point.multiplyScalar( t ).add( this.v1 );
-
-		}
-
-		return point;
-
-	};
-
-	// Line curve is linear, so we can overwrite default getPointAt
-
-	LineCurve3.prototype.getPointAt = function ( u, optionalTarget ) {
-
-		return this.getPoint( u, optionalTarget );
-
-	};
-
-	LineCurve3.prototype.copy = function ( source ) {
-
-		Curve.prototype.copy.call( this, source );
-
-		this.v1.copy( source.v1 );
-		this.v2.copy( source.v2 );
-
-		return this;
-
-	};
-
-	LineCurve3.prototype.toJSON = function () {
-
-		var data = Curve.prototype.toJSON.call( this );
-
-		data.v1 = this.v1.toArray();
-		data.v2 = this.v2.toArray();
-
-		return data;
-
-	};
-
-	LineCurve3.prototype.fromJSON = function ( json ) {
-
-		Curve.prototype.fromJSON.call( this, json );
-
-		this.v1.fromArray( json.v1 );
-		this.v2.fromArray( json.v2 );
-
-		return this;
-
-	};
-
-	function QuadraticBezierCurve( v0, v1, v2 ) {
-
-		Curve.call( this );
-
-		this.type = 'QuadraticBezierCurve';
-
-		this.v0 = v0 || new Vector2();
-		this.v1 = v1 || new Vector2();
-		this.v2 = v2 || new Vector2();
-
-	}
-
-	QuadraticBezierCurve.prototype = Object.create( Curve.prototype );
-	QuadraticBezierCurve.prototype.constructor = QuadraticBezierCurve;
-
-	QuadraticBezierCurve.prototype.isQuadraticBezierCurve = true;
-
-	QuadraticBezierCurve.prototype.getPoint = function ( t, optionalTarget ) {
-
-		var point = optionalTarget || new Vector2();
-
-		var v0 = this.v0, v1 = this.v1, v2 = this.v2;
-
-		point.set(
-			QuadraticBezier( t, v0.x, v1.x, v2.x ),
-			QuadraticBezier( t, v0.y, v1.y, v2.y )
-		);
-
-		return point;
-
-	};
-
-	QuadraticBezierCurve.prototype.copy = function ( source ) {
-
-		Curve.prototype.copy.call( this, source );
-
-		this.v0.copy( source.v0 );
-		this.v1.copy( source.v1 );
-		this.v2.copy( source.v2 );
-
-		return this;
-
-	};
-
-	QuadraticBezierCurve.prototype.toJSON = function () {
-
-		var data = Curve.prototype.toJSON.call( this );
-
-		data.v0 = this.v0.toArray();
-		data.v1 = this.v1.toArray();
-		data.v2 = this.v2.toArray();
-
-		return data;
-
-	};
-
-	QuadraticBezierCurve.prototype.fromJSON = function ( json ) {
-
-		Curve.prototype.fromJSON.call( this, json );
-
-		this.v0.fromArray( json.v0 );
-		this.v1.fromArray( json.v1 );
-		this.v2.fromArray( json.v2 );
-
-		return this;
-
-	};
-
-	function QuadraticBezierCurve3( v0, v1, v2 ) {
-
-		Curve.call( this );
-
-		this.type = 'QuadraticBezierCurve3';
-
-		this.v0 = v0 || new Vector3();
-		this.v1 = v1 || new Vector3();
-		this.v2 = v2 || new Vector3();
-
-	}
-
-	QuadraticBezierCurve3.prototype = Object.create( Curve.prototype );
-	QuadraticBezierCurve3.prototype.constructor = QuadraticBezierCurve3;
-
-	QuadraticBezierCurve3.prototype.isQuadraticBezierCurve3 = true;
-
-	QuadraticBezierCurve3.prototype.getPoint = function ( t, optionalTarget ) {
-
-		var point = optionalTarget || new Vector3();
-
-		var v0 = this.v0, v1 = this.v1, v2 = this.v2;
-
-		point.set(
-			QuadraticBezier( t, v0.x, v1.x, v2.x ),
-			QuadraticBezier( t, v0.y, v1.y, v2.y ),
-			QuadraticBezier( t, v0.z, v1.z, v2.z )
-		);
-
-		return point;
-
-	};
-
-	QuadraticBezierCurve3.prototype.copy = function ( source ) {
-
-		Curve.prototype.copy.call( this, source );
-
-		this.v0.copy( source.v0 );
-		this.v1.copy( source.v1 );
-		this.v2.copy( source.v2 );
-
-		return this;
-
-	};
-
-	QuadraticBezierCurve3.prototype.toJSON = function () {
-
-		var data = Curve.prototype.toJSON.call( this );
-
-		data.v0 = this.v0.toArray();
-		data.v1 = this.v1.toArray();
-		data.v2 = this.v2.toArray();
-
-		return data;
-
-	};
-
-	QuadraticBezierCurve3.prototype.fromJSON = function ( json ) {
-
-		Curve.prototype.fromJSON.call( this, json );
-
-		this.v0.fromArray( json.v0 );
-		this.v1.fromArray( json.v1 );
-		this.v2.fromArray( json.v2 );
-
-		return this;
-
-	};
-
-	function SplineCurve( points /* array of Vector2 */ ) {
-
-		Curve.call( this );
-
-		this.type = 'SplineCurve';
-
-		this.points = points || [];
-
-	}
-
-	SplineCurve.prototype = Object.create( Curve.prototype );
-	SplineCurve.prototype.constructor = SplineCurve;
-
-	SplineCurve.prototype.isSplineCurve = true;
-
-	SplineCurve.prototype.getPoint = function ( t, optionalTarget ) {
-
-		var point = optionalTarget || new Vector2();
-
-		var points = this.points;
-		var p = ( points.length - 1 ) * t;
-
-		var intPoint = Math.floor( p );
-		var weight = p - intPoint;
-
-		var p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];
-		var p1 = points[ intPoint ];
-		var p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];
-		var p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];
-
-		point.set(
-			CatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),
-			CatmullRom( weight, p0.y, p1.y, p2.y, p3.y )
-		);
-
-		return point;
-
-	};
-
-	SplineCurve.prototype.copy = function ( source ) {
-
-		Curve.prototype.copy.call( this, source );
-
-		this.points = [];
-
-		for ( var i = 0, l = source.points.length; i < l; i ++ ) {
-
-			var point = source.points[ i ];
-
-			this.points.push( point.clone() );
-
-		}
-
-		return this;
-
-	};
-
-	SplineCurve.prototype.toJSON = function () {
-
-		var data = Curve.prototype.toJSON.call( this );
-
-		data.points = [];
-
-		for ( var i = 0, l = this.points.length; i < l; i ++ ) {
-
-			var point = this.points[ i ];
-			data.points.push( point.toArray() );
-
-		}
-
-		return data;
-
-	};
-
-	SplineCurve.prototype.fromJSON = function ( json ) {
-
-		Curve.prototype.fromJSON.call( this, json );
-
-		this.points = [];
-
-		for ( var i = 0, l = json.points.length; i < l; i ++ ) {
-
-			var point = json.points[ i ];
-			this.points.push( new Vector2().fromArray( point ) );
-
-		}
-
-		return this;
-
-	};
-
-
-
-	var Curves = Object.freeze({
-		ArcCurve: ArcCurve,
-		CatmullRomCurve3: CatmullRomCurve3,
-		CubicBezierCurve: CubicBezierCurve,
-		CubicBezierCurve3: CubicBezierCurve3,
-		EllipseCurve: EllipseCurve,
-		LineCurve: LineCurve,
-		LineCurve3: LineCurve3,
-		QuadraticBezierCurve: QuadraticBezierCurve,
-		QuadraticBezierCurve3: QuadraticBezierCurve3,
-		SplineCurve: SplineCurve
-	});
-
-	/**
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 *
-	 **/
-
-	/**************************************************************
-	 *	Curved Path - a curve path is simply a array of connected
-	 *  curves, but retains the api of a curve
-	 **************************************************************/
-
-	function CurvePath() {
-
-		Curve.call( this );
-
-		this.type = 'CurvePath';
-
-		this.curves = [];
-		this.autoClose = false; // Automatically closes the path
-
-	}
-
-	CurvePath.prototype = Object.assign( Object.create( Curve.prototype ), {
-
-		constructor: CurvePath,
-
-		add: function ( curve ) {
-
-			this.curves.push( curve );
-
-		},
-
-		closePath: function () {
-
-			// Add a line curve if start and end of lines are not connected
-			var startPoint = this.curves[ 0 ].getPoint( 0 );
-			var endPoint = this.curves[ this.curves.length - 1 ].getPoint( 1 );
-
-			if ( ! startPoint.equals( endPoint ) ) {
-
-				this.curves.push( new LineCurve( endPoint, startPoint ) );
-
-			}
-
-		},
-
-		// To get accurate point with reference to
-		// entire path distance at time t,
-		// following has to be done:
-
-		// 1. Length of each sub path have to be known
-		// 2. Locate and identify type of curve
-		// 3. Get t for the curve
-		// 4. Return curve.getPointAt(t')
-
-		getPoint: function ( t ) {
-
-			var d = t * this.getLength();
-			var curveLengths = this.getCurveLengths();
-			var i = 0;
-
-			// To think about boundaries points.
-
-			while ( i < curveLengths.length ) {
-
-				if ( curveLengths[ i ] >= d ) {
-
-					var diff = curveLengths[ i ] - d;
-					var curve = this.curves[ i ];
-
-					var segmentLength = curve.getLength();
-					var u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;
-
-					return curve.getPointAt( u );
-
-				}
-
-				i ++;
-
-			}
-
-			return null;
-
-			// loop where sum != 0, sum > d , sum+1 <d
-
-		},
-
-		// We cannot use the default THREE.Curve getPoint() with getLength() because in
-		// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath
-		// getPoint() depends on getLength
-
-		getLength: function () {
-
-			var lens = this.getCurveLengths();
-			return lens[ lens.length - 1 ];
-
-		},
-
-		// cacheLengths must be recalculated.
-		updateArcLengths: function () {
-
-			this.needsUpdate = true;
-			this.cacheLengths = null;
-			this.getCurveLengths();
-
-		},
-
-		// Compute lengths and cache them
-		// We cannot overwrite getLengths() because UtoT mapping uses it.
-
-		getCurveLengths: function () {
-
-			// We use cache values if curves and cache array are same length
-
-			if ( this.cacheLengths && this.cacheLengths.length === this.curves.length ) {
-
-				return this.cacheLengths;
-
-			}
-
-			// Get length of sub-curve
-			// Push sums into cached array
-
-			var lengths = [], sums = 0;
-
-			for ( var i = 0, l = this.curves.length; i < l; i ++ ) {
-
-				sums += this.curves[ i ].getLength();
-				lengths.push( sums );
-
-			}
-
-			this.cacheLengths = lengths;
-
-			return lengths;
-
-		},
-
-		getSpacedPoints: function ( divisions ) {
-
-			if ( divisions === undefined ) divisions = 40;
-
-			var points = [];
-
-			for ( var i = 0; i <= divisions; i ++ ) {
-
-				points.push( this.getPoint( i / divisions ) );
-
-			}
-
-			if ( this.autoClose ) {
-
-				points.push( points[ 0 ] );
-
-			}
-
-			return points;
-
-		},
-
-		getPoints: function ( divisions ) {
-
-			divisions = divisions || 12;
-
-			var points = [], last;
-
-			for ( var i = 0, curves = this.curves; i < curves.length; i ++ ) {
-
-				var curve = curves[ i ];
-				var resolution = ( curve && curve.isEllipseCurve ) ? divisions * 2
-					: ( curve && curve.isLineCurve ) ? 1
-						: ( curve && curve.isSplineCurve ) ? divisions * curve.points.length
-							: divisions;
-
-				var pts = curve.getPoints( resolution );
-
-				for ( var j = 0; j < pts.length; j ++ ) {
-
-					var point = pts[ j ];
-
-					if ( last && last.equals( point ) ) continue; // ensures no consecutive points are duplicates
-
-					points.push( point );
-					last = point;
-
-				}
-
-			}
-
-			if ( this.autoClose && points.length > 1 && ! points[ points.length - 1 ].equals( points[ 0 ] ) ) {
-
-				points.push( points[ 0 ] );
-
-			}
-
-			return points;
-
-		},
-
-		copy: function ( source ) {
-
-			Curve.prototype.copy.call( this, source );
-
-			this.curves = [];
-
-			for ( var i = 0, l = source.curves.length; i < l; i ++ ) {
-
-				var curve = source.curves[ i ];
-
-				this.curves.push( curve.clone() );
-
-			}
-
-			this.autoClose = source.autoClose;
-
-			return this;
-
-		},
-
-		toJSON: function () {
-
-			var data = Curve.prototype.toJSON.call( this );
-
-			data.autoClose = this.autoClose;
-			data.curves = [];
-
-			for ( var i = 0, l = this.curves.length; i < l; i ++ ) {
-
-				var curve = this.curves[ i ];
-				data.curves.push( curve.toJSON() );
-
-			}
-
-			return data;
-
-		},
-
-		fromJSON: function ( json ) {
-
-			Curve.prototype.fromJSON.call( this, json );
-
-			this.autoClose = json.autoClose;
-			this.curves = [];
-
-			for ( var i = 0, l = json.curves.length; i < l; i ++ ) {
-
-				var curve = json.curves[ i ];
-				this.curves.push( new Curves[ curve.type ]().fromJSON( curve ) );
-
-			}
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 * Creates free form 2d path using series of points, lines or curves.
-	 **/
-
-	function Path( points ) {
-
-		CurvePath.call( this );
-
-		this.type = 'Path';
-
-		this.currentPoint = new Vector2();
-
-		if ( points ) {
-
-			this.setFromPoints( points );
-
-		}
-
-	}
-
-	Path.prototype = Object.assign( Object.create( CurvePath.prototype ), {
-
-		constructor: Path,
-
-		setFromPoints: function ( points ) {
-
-			this.moveTo( points[ 0 ].x, points[ 0 ].y );
-
-			for ( var i = 1, l = points.length; i < l; i ++ ) {
-
-				this.lineTo( points[ i ].x, points[ i ].y );
-
-			}
-
-		},
-
-		moveTo: function ( x, y ) {
-
-			this.currentPoint.set( x, y ); // TODO consider referencing vectors instead of copying?
-
-		},
-
-		lineTo: function ( x, y ) {
-
-			var curve = new LineCurve( this.currentPoint.clone(), new Vector2( x, y ) );
-			this.curves.push( curve );
-
-			this.currentPoint.set( x, y );
-
-		},
-
-		quadraticCurveTo: function ( aCPx, aCPy, aX, aY ) {
-
-			var curve = new QuadraticBezierCurve(
-				this.currentPoint.clone(),
-				new Vector2( aCPx, aCPy ),
-				new Vector2( aX, aY )
-			);
-
-			this.curves.push( curve );
-
-			this.currentPoint.set( aX, aY );
-
-		},
-
-		bezierCurveTo: function ( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {
-
-			var curve = new CubicBezierCurve(
-				this.currentPoint.clone(),
-				new Vector2( aCP1x, aCP1y ),
-				new Vector2( aCP2x, aCP2y ),
-				new Vector2( aX, aY )
-			);
-
-			this.curves.push( curve );
-
-			this.currentPoint.set( aX, aY );
-
-		},
-
-		splineThru: function ( pts /*Array of Vector*/ ) {
-
-			var npts = [ this.currentPoint.clone() ].concat( pts );
-
-			var curve = new SplineCurve( npts );
-			this.curves.push( curve );
-
-			this.currentPoint.copy( pts[ pts.length - 1 ] );
-
-		},
-
-		arc: function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
-
-			var x0 = this.currentPoint.x;
-			var y0 = this.currentPoint.y;
-
-			this.absarc( aX + x0, aY + y0, aRadius,
-				aStartAngle, aEndAngle, aClockwise );
-
-		},
-
-		absarc: function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
-
-			this.absellipse( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );
-
-		},
-
-		ellipse: function ( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
-
-			var x0 = this.currentPoint.x;
-			var y0 = this.currentPoint.y;
-
-			this.absellipse( aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );
-
-		},
-
-		absellipse: function ( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
-
-			var curve = new EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );
-
-			if ( this.curves.length > 0 ) {
-
-				// if a previous curve is present, attempt to join
-				var firstPoint = curve.getPoint( 0 );
-
-				if ( ! firstPoint.equals( this.currentPoint ) ) {
-
-					this.lineTo( firstPoint.x, firstPoint.y );
-
-				}
-
-			}
-
-			this.curves.push( curve );
-
-			var lastPoint = curve.getPoint( 1 );
-			this.currentPoint.copy( lastPoint );
-
-		},
-
-		copy: function ( source ) {
-
-			CurvePath.prototype.copy.call( this, source );
-
-			this.currentPoint.copy( source.currentPoint );
-
-			return this;
-
-		},
-
-		toJSON: function () {
-
-			var data = CurvePath.prototype.toJSON.call( this );
-
-			data.currentPoint = this.currentPoint.toArray();
-
-			return data;
-
-		},
-
-		fromJSON: function ( json ) {
-
-			CurvePath.prototype.fromJSON.call( this, json );
-
-			this.currentPoint.fromArray( json.currentPoint );
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 * Defines a 2d shape plane using paths.
-	 **/
-
-	// STEP 1 Create a path.
-	// STEP 2 Turn path into shape.
-	// STEP 3 ExtrudeGeometry takes in Shape/Shapes
-	// STEP 3a - Extract points from each shape, turn to vertices
-	// STEP 3b - Triangulate each shape, add faces.
-
-	function Shape( points ) {
-
-		Path.call( this, points );
-
-		this.uuid = _Math.generateUUID();
-
-		this.type = 'Shape';
-
-		this.holes = [];
-
-	}
-
-	Shape.prototype = Object.assign( Object.create( Path.prototype ), {
-
-		constructor: Shape,
-
-		getPointsHoles: function ( divisions ) {
-
-			var holesPts = [];
-
-			for ( var i = 0, l = this.holes.length; i < l; i ++ ) {
-
-				holesPts[ i ] = this.holes[ i ].getPoints( divisions );
-
-			}
-
-			return holesPts;
-
-		},
-
-		// get points of shape and holes (keypoints based on segments parameter)
-
-		extractPoints: function ( divisions ) {
-
-			return {
-
-				shape: this.getPoints( divisions ),
-				holes: this.getPointsHoles( divisions )
-
-			};
-
-		},
-
-		copy: function ( source ) {
-
-			Path.prototype.copy.call( this, source );
-
-			this.holes = [];
-
-			for ( var i = 0, l = source.holes.length; i < l; i ++ ) {
-
-				var hole = source.holes[ i ];
-
-				this.holes.push( hole.clone() );
-
-			}
-
-			return this;
-
-		},
-
-		toJSON: function () {
-
-			var data = Path.prototype.toJSON.call( this );
-
-			data.uuid = this.uuid;
-			data.holes = [];
-
-			for ( var i = 0, l = this.holes.length; i < l; i ++ ) {
-
-				var hole = this.holes[ i ];
-				data.holes.push( hole.toJSON() );
-
-			}
-
-			return data;
-
-		},
-
-		fromJSON: function ( json ) {
-
-			Path.prototype.fromJSON.call( this, json );
-
-			this.uuid = json.uuid;
-			this.holes = [];
-
-			for ( var i = 0, l = json.holes.length; i < l; i ++ ) {
-
-				var hole = json.holes[ i ];
-				this.holes.push( new Path().fromJSON( hole ) );
-
-			}
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function Light( color, intensity ) {
-
-		Object3D.call( this );
-
-		this.type = 'Light';
-
-		this.color = new Color( color );
-		this.intensity = intensity !== undefined ? intensity : 1;
-
-		this.receiveShadow = undefined;
-
-	}
-
-	Light.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: Light,
-
-		isLight: true,
-
-		copy: function ( source ) {
-
-			Object3D.prototype.copy.call( this, source );
-
-			this.color.copy( source.color );
-			this.intensity = source.intensity;
-
-			return this;
-
-		},
-
-		toJSON: function ( meta ) {
-
-			var data = Object3D.prototype.toJSON.call( this, meta );
-
-			data.object.color = this.color.getHex();
-			data.object.intensity = this.intensity;
-
-			if ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();
-
-			if ( this.distance !== undefined ) data.object.distance = this.distance;
-			if ( this.angle !== undefined ) data.object.angle = this.angle;
-			if ( this.decay !== undefined ) data.object.decay = this.decay;
-			if ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;
-
-			if ( this.shadow !== undefined ) data.object.shadow = this.shadow.toJSON();
-
-			return data;
-
-		}
-
-	} );
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function HemisphereLight( skyColor, groundColor, intensity ) {
-
-		Light.call( this, skyColor, intensity );
-
-		this.type = 'HemisphereLight';
-
-		this.castShadow = undefined;
-
-		this.position.copy( Object3D.DefaultUp );
-		this.updateMatrix();
-
-		this.groundColor = new Color( groundColor );
-
-	}
-
-	HemisphereLight.prototype = Object.assign( Object.create( Light.prototype ), {
-
-		constructor: HemisphereLight,
-
-		isHemisphereLight: true,
-
-		copy: function ( source ) {
-
-			Light.prototype.copy.call( this, source );
-
-			this.groundColor.copy( source.groundColor );
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function LightShadow( camera ) {
-
-		this.camera = camera;
-
-		this.bias = 0;
-		this.radius = 1;
-
-		this.mapSize = new Vector2( 512, 512 );
-
-		this.map = null;
-		this.matrix = new Matrix4();
-
-	}
-
-	Object.assign( LightShadow.prototype, {
-
-		copy: function ( source ) {
-
-			this.camera = source.camera.clone();
-
-			this.bias = source.bias;
-			this.radius = source.radius;
-
-			this.mapSize.copy( source.mapSize );
-
-			return this;
-
-		},
-
-		clone: function () {
-
-			return new this.constructor().copy( this );
-
-		},
-
-		toJSON: function () {
-
-			var object = {};
-
-			if ( this.bias !== 0 ) object.bias = this.bias;
-			if ( this.radius !== 1 ) object.radius = this.radius;
-			if ( this.mapSize.x !== 512 || this.mapSize.y !== 512 ) object.mapSize = this.mapSize.toArray();
-
-			object.camera = this.camera.toJSON( false ).object;
-			delete object.camera.matrix;
-
-			return object;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function SpotLightShadow() {
-
-		LightShadow.call( this, new PerspectiveCamera( 50, 1, 0.5, 500 ) );
-
-	}
-
-	SpotLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {
-
-		constructor: SpotLightShadow,
-
-		isSpotLightShadow: true,
-
-		update: function ( light ) {
-
-			var camera = this.camera;
-
-			var fov = _Math.RAD2DEG * 2 * light.angle;
-			var aspect = this.mapSize.width / this.mapSize.height;
-			var far = light.distance || camera.far;
-
-			if ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {
-
-				camera.fov = fov;
-				camera.aspect = aspect;
-				camera.far = far;
-				camera.updateProjectionMatrix();
-
-			}
-
-		}
-
-	} );
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function SpotLight( color, intensity, distance, angle, penumbra, decay ) {
-
-		Light.call( this, color, intensity );
-
-		this.type = 'SpotLight';
-
-		this.position.copy( Object3D.DefaultUp );
-		this.updateMatrix();
-
-		this.target = new Object3D();
-
-		Object.defineProperty( this, 'power', {
-			get: function () {
-
-				// intensity = power per solid angle.
-				// ref: equation (17) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
-				return this.intensity * Math.PI;
-
-			},
-			set: function ( power ) {
-
-				// intensity = power per solid angle.
-				// ref: equation (17) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
-				this.intensity = power / Math.PI;
-
-			}
-		} );
-
-		this.distance = ( distance !== undefined ) ? distance : 0;
-		this.angle = ( angle !== undefined ) ? angle : Math.PI / 3;
-		this.penumbra = ( penumbra !== undefined ) ? penumbra : 0;
-		this.decay = ( decay !== undefined ) ? decay : 1;	// for physically correct lights, should be 2.
-
-		this.shadow = new SpotLightShadow();
-
-	}
-
-	SpotLight.prototype = Object.assign( Object.create( Light.prototype ), {
-
-		constructor: SpotLight,
-
-		isSpotLight: true,
-
-		copy: function ( source ) {
-
-			Light.prototype.copy.call( this, source );
-
-			this.distance = source.distance;
-			this.angle = source.angle;
-			this.penumbra = source.penumbra;
-			this.decay = source.decay;
-
-			this.target = source.target.clone();
-
-			this.shadow = source.shadow.clone();
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-
-	function PointLight( color, intensity, distance, decay ) {
-
-		Light.call( this, color, intensity );
-
-		this.type = 'PointLight';
-
-		Object.defineProperty( this, 'power', {
-			get: function () {
-
-				// intensity = power per solid angle.
-				// ref: equation (15) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
-				return this.intensity * 4 * Math.PI;
-
-			},
-			set: function ( power ) {
-
-				// intensity = power per solid angle.
-				// ref: equation (15) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
-				this.intensity = power / ( 4 * Math.PI );
-
-			}
-		} );
-
-		this.distance = ( distance !== undefined ) ? distance : 0;
-		this.decay = ( decay !== undefined ) ? decay : 1;	// for physically correct lights, should be 2.
-
-		this.shadow = new LightShadow( new PerspectiveCamera( 90, 1, 0.5, 500 ) );
-
-	}
-
-	PointLight.prototype = Object.assign( Object.create( Light.prototype ), {
-
-		constructor: PointLight,
-
-		isPointLight: true,
-
-		copy: function ( source ) {
-
-			Light.prototype.copy.call( this, source );
-
-			this.distance = source.distance;
-			this.decay = source.decay;
-
-			this.shadow = source.shadow.clone();
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function DirectionalLightShadow( ) {
-
-		LightShadow.call( this, new OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );
-
-	}
-
-	DirectionalLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {
-
-		constructor: DirectionalLightShadow
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function DirectionalLight( color, intensity ) {
-
-		Light.call( this, color, intensity );
-
-		this.type = 'DirectionalLight';
-
-		this.position.copy( Object3D.DefaultUp );
-		this.updateMatrix();
-
-		this.target = new Object3D();
-
-		this.shadow = new DirectionalLightShadow();
-
-	}
-
-	DirectionalLight.prototype = Object.assign( Object.create( Light.prototype ), {
-
-		constructor: DirectionalLight,
-
-		isDirectionalLight: true,
-
-		copy: function ( source ) {
-
-			Light.prototype.copy.call( this, source );
-
-			this.target = source.target.clone();
-
-			this.shadow = source.shadow.clone();
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function AmbientLight( color, intensity ) {
-
-		Light.call( this, color, intensity );
-
-		this.type = 'AmbientLight';
-
-		this.castShadow = undefined;
-
-	}
-
-	AmbientLight.prototype = Object.assign( Object.create( Light.prototype ), {
-
-		constructor: AmbientLight,
-
-		isAmbientLight: true
-
-	} );
-
-	/**
-	 * @author abelnation / http://github.com/abelnation
-	 */
-
-	function RectAreaLight( color, intensity, width, height ) {
-
-		Light.call( this, color, intensity );
-
-		this.type = 'RectAreaLight';
-
-		this.width = ( width !== undefined ) ? width : 10;
-		this.height = ( height !== undefined ) ? height : 10;
-
-	}
-
-	RectAreaLight.prototype = Object.assign( Object.create( Light.prototype ), {
-
-		constructor: RectAreaLight,
-
-		isRectAreaLight: true,
-
-		copy: function ( source ) {
-
-			Light.prototype.copy.call( this, source );
-
-			this.width = source.width;
-			this.height = source.height;
-
-			return this;
-
-		},
-
-		toJSON: function ( meta ) {
-
-			var data = Light.prototype.toJSON.call( this, meta );
-
-			data.object.width = this.width;
-			data.object.height = this.height;
-
-			return data;
-
-		}
-
-	} );
-
-	/**
-	 *
-	 * A Track that interpolates Strings
-	 *
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 */
-
-	function StringKeyframeTrack( name, times, values, interpolation ) {
-
-		KeyframeTrack.call( this, name, times, values, interpolation );
-
-	}
-
-	StringKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
-
-		constructor: StringKeyframeTrack,
-
-		ValueTypeName: 'string',
-		ValueBufferType: Array,
-
-		DefaultInterpolation: InterpolateDiscrete,
-
-		InterpolantFactoryMethodLinear: undefined,
-
-		InterpolantFactoryMethodSmooth: undefined
-
-	} );
-
-	/**
-	 *
-	 * A Track of Boolean keyframe values.
-	 *
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 */
-
-	function BooleanKeyframeTrack( name, times, values ) {
-
-		KeyframeTrack.call( this, name, times, values );
-
-	}
-
-	BooleanKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
-
-		constructor: BooleanKeyframeTrack,
-
-		ValueTypeName: 'bool',
-		ValueBufferType: Array,
-
-		DefaultInterpolation: InterpolateDiscrete,
-
-		InterpolantFactoryMethodLinear: undefined,
-		InterpolantFactoryMethodSmooth: undefined
-
-		// Note: Actually this track could have a optimized / compressed
-		// representation of a single value and a custom interpolant that
-		// computes "firstValue ^ isOdd( index )".
-
-	} );
-
-	/**
-	 * Abstract base class of interpolants over parametric samples.
-	 *
-	 * The parameter domain is one dimensional, typically the time or a path
-	 * along a curve defined by the data.
-	 *
-	 * The sample values can have any dimensionality and derived classes may
-	 * apply special interpretations to the data.
-	 *
-	 * This class provides the interval seek in a Template Method, deferring
-	 * the actual interpolation to derived classes.
-	 *
-	 * Time complexity is O(1) for linear access crossing at most two points
-	 * and O(log N) for random access, where N is the number of positions.
-	 *
-	 * References:
-	 *
-	 * 		http://www.oodesign.com/template-method-pattern.html
-	 *
-	 * @author tschw
-	 */
-
-	function Interpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
-
-		this.parameterPositions = parameterPositions;
-		this._cachedIndex = 0;
-
-		this.resultBuffer = resultBuffer !== undefined ?
-			resultBuffer : new sampleValues.constructor( sampleSize );
-		this.sampleValues = sampleValues;
-		this.valueSize = sampleSize;
-
-	}
-
-	Object.assign( Interpolant.prototype, {
-
-		evaluate: function ( t ) {
-
-			var pp = this.parameterPositions,
-				i1 = this._cachedIndex,
-
-				t1 = pp[ i1 ],
-				t0 = pp[ i1 - 1 ];
-
-			validate_interval: {
-
-				seek: {
-
-					var right;
-
-					linear_scan: {
-
-						//- See http://jsperf.com/comparison-to-undefined/3
-						//- slower code:
-						//-
-						//- 				if ( t >= t1 || t1 === undefined ) {
-						forward_scan: if ( ! ( t < t1 ) ) {
-
-							for ( var giveUpAt = i1 + 2; ; ) {
-
-								if ( t1 === undefined ) {
-
-									if ( t < t0 ) break forward_scan;
-
-									// after end
-
-									i1 = pp.length;
-									this._cachedIndex = i1;
-									return this.afterEnd_( i1 - 1, t, t0 );
-
-								}
-
-								if ( i1 === giveUpAt ) break; // this loop
-
-								t0 = t1;
-								t1 = pp[ ++ i1 ];
-
-								if ( t < t1 ) {
-
-									// we have arrived at the sought interval
-									break seek;
-
-								}
-
-							}
-
-							// prepare binary search on the right side of the index
-							right = pp.length;
-							break linear_scan;
-
-						}
-
-						//- slower code:
-						//-					if ( t < t0 || t0 === undefined ) {
-						if ( ! ( t >= t0 ) ) {
-
-							// looping?
-
-							var t1global = pp[ 1 ];
-
-							if ( t < t1global ) {
-
-								i1 = 2; // + 1, using the scan for the details
-								t0 = t1global;
-
-							}
-
-							// linear reverse scan
-
-							for ( var giveUpAt = i1 - 2; ; ) {
-
-								if ( t0 === undefined ) {
-
-									// before start
-
-									this._cachedIndex = 0;
-									return this.beforeStart_( 0, t, t1 );
-
-								}
-
-								if ( i1 === giveUpAt ) break; // this loop
-
-								t1 = t0;
-								t0 = pp[ -- i1 - 1 ];
-
-								if ( t >= t0 ) {
-
-									// we have arrived at the sought interval
-									break seek;
-
-								}
-
-							}
-
-							// prepare binary search on the left side of the index
-							right = i1;
-							i1 = 0;
-							break linear_scan;
-
-						}
-
-						// the interval is valid
-
-						break validate_interval;
-
-					} // linear scan
-
-					// binary search
-
-					while ( i1 < right ) {
-
-						var mid = ( i1 + right ) >>> 1;
-
-						if ( t < pp[ mid ] ) {
-
-							right = mid;
-
-						} else {
-
-							i1 = mid + 1;
-
-						}
-
-					}
-
-					t1 = pp[ i1 ];
-					t0 = pp[ i1 - 1 ];
-
-					// check boundary cases, again
-
-					if ( t0 === undefined ) {
-
-						this._cachedIndex = 0;
-						return this.beforeStart_( 0, t, t1 );
-
-					}
-
-					if ( t1 === undefined ) {
-
-						i1 = pp.length;
-						this._cachedIndex = i1;
-						return this.afterEnd_( i1 - 1, t0, t );
-
-					}
-
-				} // seek
-
-				this._cachedIndex = i1;
-
-				this.intervalChanged_( i1, t0, t1 );
-
-			} // validate_interval
-
-			return this.interpolate_( i1, t0, t, t1 );
-
-		},
-
-		settings: null, // optional, subclass-specific settings structure
-		// Note: The indirection allows central control of many interpolants.
-
-		// --- Protected interface
-
-		DefaultSettings_: {},
-
-		getSettings_: function () {
-
-			return this.settings || this.DefaultSettings_;
-
-		},
-
-		copySampleValue_: function ( index ) {
-
-			// copies a sample value to the result buffer
-
-			var result = this.resultBuffer,
-				values = this.sampleValues,
-				stride = this.valueSize,
-				offset = index * stride;
-
-			for ( var i = 0; i !== stride; ++ i ) {
-
-				result[ i ] = values[ offset + i ];
-
-			}
-
-			return result;
-
-		},
-
-		// Template methods for derived classes:
-
-		interpolate_: function ( /* i1, t0, t, t1 */ ) {
-
-			throw new Error( 'call to abstract method' );
-			// implementations shall return this.resultBuffer
-
-		},
-
-		intervalChanged_: function ( /* i1, t0, t1 */ ) {
-
-			// empty
-
-		}
-
-	} );
-
-	//!\ DECLARE ALIAS AFTER assign prototype !
-	Object.assign( Interpolant.prototype, {
-
-		//( 0, t, t0 ), returns this.resultBuffer
-		beforeStart_: Interpolant.prototype.copySampleValue_,
-
-		//( N-1, tN-1, t ), returns this.resultBuffer
-		afterEnd_: Interpolant.prototype.copySampleValue_,
-
-	} );
-
-	/**
-	 * Spherical linear unit quaternion interpolant.
-	 *
-	 * @author tschw
-	 */
-
-	function QuaternionLinearInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
-
-		Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
-
-	}
-
-	QuaternionLinearInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
-
-		constructor: QuaternionLinearInterpolant,
-
-		interpolate_: function ( i1, t0, t, t1 ) {
-
-			var result = this.resultBuffer,
-				values = this.sampleValues,
-				stride = this.valueSize,
-
-				offset = i1 * stride,
-
-				alpha = ( t - t0 ) / ( t1 - t0 );
-
-			for ( var end = offset + stride; offset !== end; offset += 4 ) {
-
-				Quaternion.slerpFlat( result, 0, values, offset - stride, values, offset, alpha );
-
-			}
-
-			return result;
-
-		}
-
-	} );
-
-	/**
-	 *
-	 * A Track of quaternion keyframe values.
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 */
-
-	function QuaternionKeyframeTrack( name, times, values, interpolation ) {
-
-		KeyframeTrack.call( this, name, times, values, interpolation );
-
-	}
-
-	QuaternionKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
-
-		constructor: QuaternionKeyframeTrack,
-
-		ValueTypeName: 'quaternion',
-
-		// ValueBufferType is inherited
-
-		DefaultInterpolation: InterpolateLinear,
-
-		InterpolantFactoryMethodLinear: function ( result ) {
-
-			return new QuaternionLinearInterpolant( this.times, this.values, this.getValueSize(), result );
-
-		},
-
-		InterpolantFactoryMethodSmooth: undefined // not yet implemented
-
-	} );
-
-	/**
-	 *
-	 * A Track of keyframe values that represent color.
-	 *
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 */
-
-	function ColorKeyframeTrack( name, times, values, interpolation ) {
-
-		KeyframeTrack.call( this, name, times, values, interpolation );
-
-	}
-
-	ColorKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
-
-		constructor: ColorKeyframeTrack,
-
-		ValueTypeName: 'color'
-
-		// ValueBufferType is inherited
-
-		// DefaultInterpolation is inherited
-
-		// Note: Very basic implementation and nothing special yet.
-		// However, this is the place for color space parameterization.
-
-	} );
-
-	/**
-	 *
-	 * A Track of numeric keyframe values.
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 */
-
-	function NumberKeyframeTrack( name, times, values, interpolation ) {
-
-		KeyframeTrack.call( this, name, times, values, interpolation );
-
-	}
-
-	NumberKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
-
-		constructor: NumberKeyframeTrack,
-
-		ValueTypeName: 'number'
-
-		// ValueBufferType is inherited
-
-		// DefaultInterpolation is inherited
-
-	} );
-
-	/**
-	 * Fast and simple cubic spline interpolant.
-	 *
-	 * It was derived from a Hermitian construction setting the first derivative
-	 * at each sample position to the linear slope between neighboring positions
-	 * over their parameter interval.
-	 *
-	 * @author tschw
-	 */
-
-	function CubicInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
-
-		Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
-
-		this._weightPrev = - 0;
-		this._offsetPrev = - 0;
-		this._weightNext = - 0;
-		this._offsetNext = - 0;
-
-	}
-
-	CubicInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
-
-		constructor: CubicInterpolant,
-
-		DefaultSettings_: {
-
-			endingStart: ZeroCurvatureEnding,
-			endingEnd: ZeroCurvatureEnding
-
-		},
-
-		intervalChanged_: function ( i1, t0, t1 ) {
-
-			var pp = this.parameterPositions,
-				iPrev = i1 - 2,
-				iNext = i1 + 1,
-
-				tPrev = pp[ iPrev ],
-				tNext = pp[ iNext ];
-
-			if ( tPrev === undefined ) {
-
-				switch ( this.getSettings_().endingStart ) {
-
-					case ZeroSlopeEnding:
-
-						// f'(t0) = 0
-						iPrev = i1;
-						tPrev = 2 * t0 - t1;
-
-						break;
-
-					case WrapAroundEnding:
-
-						// use the other end of the curve
-						iPrev = pp.length - 2;
-						tPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];
-
-						break;
-
-					default: // ZeroCurvatureEnding
-
-						// f''(t0) = 0 a.k.a. Natural Spline
-						iPrev = i1;
-						tPrev = t1;
-
-				}
-
-			}
-
-			if ( tNext === undefined ) {
-
-				switch ( this.getSettings_().endingEnd ) {
-
-					case ZeroSlopeEnding:
-
-						// f'(tN) = 0
-						iNext = i1;
-						tNext = 2 * t1 - t0;
-
-						break;
-
-					case WrapAroundEnding:
-
-						// use the other end of the curve
-						iNext = 1;
-						tNext = t1 + pp[ 1 ] - pp[ 0 ];
-
-						break;
-
-					default: // ZeroCurvatureEnding
-
-						// f''(tN) = 0, a.k.a. Natural Spline
-						iNext = i1 - 1;
-						tNext = t0;
-
-				}
-
-			}
-
-			var halfDt = ( t1 - t0 ) * 0.5,
-				stride = this.valueSize;
-
-			this._weightPrev = halfDt / ( t0 - tPrev );
-			this._weightNext = halfDt / ( tNext - t1 );
-			this._offsetPrev = iPrev * stride;
-			this._offsetNext = iNext * stride;
-
-		},
-
-		interpolate_: function ( i1, t0, t, t1 ) {
-
-			var result = this.resultBuffer,
-				values = this.sampleValues,
-				stride = this.valueSize,
-
-				o1 = i1 * stride,		o0 = o1 - stride,
-				oP = this._offsetPrev, 	oN = this._offsetNext,
-				wP = this._weightPrev,	wN = this._weightNext,
-
-				p = ( t - t0 ) / ( t1 - t0 ),
-				pp = p * p,
-				ppp = pp * p;
-
-			// evaluate polynomials
-
-			var sP = - wP * ppp + 2 * wP * pp - wP * p;
-			var s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;
-			var s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;
-			var sN = wN * ppp - wN * pp;
-
-			// combine data linearly
-
-			for ( var i = 0; i !== stride; ++ i ) {
-
-				result[ i ] =
-						sP * values[ oP + i ] +
-						s0 * values[ o0 + i ] +
-						s1 * values[ o1 + i ] +
-						sN * values[ oN + i ];
-
-			}
-
-			return result;
-
-		}
-
-	} );
-
-	/**
-	 * @author tschw
-	 */
-
-	function LinearInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
-
-		Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
-
-	}
-
-	LinearInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
-
-		constructor: LinearInterpolant,
-
-		interpolate_: function ( i1, t0, t, t1 ) {
-
-			var result = this.resultBuffer,
-				values = this.sampleValues,
-				stride = this.valueSize,
-
-				offset1 = i1 * stride,
-				offset0 = offset1 - stride,
-
-				weight1 = ( t - t0 ) / ( t1 - t0 ),
-				weight0 = 1 - weight1;
-
-			for ( var i = 0; i !== stride; ++ i ) {
-
-				result[ i ] =
-						values[ offset0 + i ] * weight0 +
-						values[ offset1 + i ] * weight1;
-
-			}
-
-			return result;
-
-		}
-
-	} );
-
-	/**
-	 *
-	 * Interpolant that evaluates to the sample value at the position preceeding
-	 * the parameter.
-	 *
-	 * @author tschw
-	 */
-
-	function DiscreteInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
-
-		Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
-
-	}
-
-	DiscreteInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
-
-		constructor: DiscreteInterpolant,
-
-		interpolate_: function ( i1 /*, t0, t, t1 */ ) {
-
-			return this.copySampleValue_( i1 - 1 );
-
-		}
-
-	} );
-
-	/**
-	 * @author tschw
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 */
-
-	var AnimationUtils = {
-
-		// same as Array.prototype.slice, but also works on typed arrays
-		arraySlice: function ( array, from, to ) {
-
-			if ( AnimationUtils.isTypedArray( array ) ) {
-
-				// in ios9 array.subarray(from, undefined) will return empty array
-				// but array.subarray(from) or array.subarray(from, len) is correct
-				return new array.constructor( array.subarray( from, to !== undefined ? to : array.length ) );
-
-			}
-
-			return array.slice( from, to );
-
-		},
-
-		// converts an array to a specific type
-		convertArray: function ( array, type, forceClone ) {
-
-			if ( ! array || // let 'undefined' and 'null' pass
-					! forceClone && array.constructor === type ) return array;
-
-			if ( typeof type.BYTES_PER_ELEMENT === 'number' ) {
-
-				return new type( array ); // create typed array
-
-			}
-
-			return Array.prototype.slice.call( array ); // create Array
-
-		},
-
-		isTypedArray: function ( object ) {
-
-			return ArrayBuffer.isView( object ) &&
-					! ( object instanceof DataView );
-
-		},
-
-		// returns an array by which times and values can be sorted
-		getKeyframeOrder: function ( times ) {
-
-			function compareTime( i, j ) {
-
-				return times[ i ] - times[ j ];
-
-			}
-
-			var n = times.length;
-			var result = new Array( n );
-			for ( var i = 0; i !== n; ++ i ) result[ i ] = i;
-
-			result.sort( compareTime );
-
-			return result;
-
-		},
-
-		// uses the array previously returned by 'getKeyframeOrder' to sort data
-		sortedArray: function ( values, stride, order ) {
-
-			var nValues = values.length;
-			var result = new values.constructor( nValues );
-
-			for ( var i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {
-
-				var srcOffset = order[ i ] * stride;
-
-				for ( var j = 0; j !== stride; ++ j ) {
-
-					result[ dstOffset ++ ] = values[ srcOffset + j ];
-
-				}
-
-			}
-
-			return result;
-
-		},
-
-		// function for parsing AOS keyframe formats
-		flattenJSON: function ( jsonKeys, times, values, valuePropertyName ) {
-
-			var i = 1, key = jsonKeys[ 0 ];
-
-			while ( key !== undefined && key[ valuePropertyName ] === undefined ) {
-
-				key = jsonKeys[ i ++ ];
-
-			}
-
-			if ( key === undefined ) return; // no data
-
-			var value = key[ valuePropertyName ];
-			if ( value === undefined ) return; // no data
-
-			if ( Array.isArray( value ) ) {
-
-				do {
-
-					value = key[ valuePropertyName ];
-
-					if ( value !== undefined ) {
-
-						times.push( key.time );
-						values.push.apply( values, value ); // push all elements
-
-					}
-
-					key = jsonKeys[ i ++ ];
-
-				} while ( key !== undefined );
-
-			} else if ( value.toArray !== undefined ) {
-
-				// ...assume THREE.Math-ish
-
-				do {
-
-					value = key[ valuePropertyName ];
-
-					if ( value !== undefined ) {
-
-						times.push( key.time );
-						value.toArray( values, values.length );
-
-					}
-
-					key = jsonKeys[ i ++ ];
-
-				} while ( key !== undefined );
-
-			} else {
-
-				// otherwise push as-is
-
-				do {
-
-					value = key[ valuePropertyName ];
-
-					if ( value !== undefined ) {
-
-						times.push( key.time );
-						values.push( value );
-
-					}
-
-					key = jsonKeys[ i ++ ];
-
-				} while ( key !== undefined );
-
-			}
-
-		}
-
-	};
-
-	/**
-	 *
-	 * A timed sequence of keyframes for a specific property.
-	 *
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 */
-
-	function KeyframeTrack( name, times, values, interpolation ) {
-
-		if ( name === undefined ) throw new Error( 'THREE.KeyframeTrack: track name is undefined' );
-		if ( times === undefined || times.length === 0 ) throw new Error( 'THREE.KeyframeTrack: no keyframes in track named ' + name );
-
-		this.name = name;
-
-		this.times = AnimationUtils.convertArray( times, this.TimeBufferType );
-		this.values = AnimationUtils.convertArray( values, this.ValueBufferType );
-
-		this.setInterpolation( interpolation || this.DefaultInterpolation );
-
-		this.validate();
-		this.optimize();
-
-	}
-
-	// Static methods:
-
-	Object.assign( KeyframeTrack, {
-
-		// Serialization (in static context, because of constructor invocation
-		// and automatic invocation of .toJSON):
-
-		parse: function ( json ) {
-
-			if ( json.type === undefined ) {
-
-				throw new Error( 'THREE.KeyframeTrack: track type undefined, can not parse' );
-
-			}
-
-			var trackType = KeyframeTrack._getTrackTypeForValueTypeName( json.type );
-
-			if ( json.times === undefined ) {
-
-				var times = [], values = [];
-
-				AnimationUtils.flattenJSON( json.keys, times, values, 'value' );
-
-				json.times = times;
-				json.values = values;
-
-			}
-
-			// derived classes can define a static parse method
-			if ( trackType.parse !== undefined ) {
-
-				return trackType.parse( json );
-
-			} else {
-
-				// by default, we assume a constructor compatible with the base
-				return new trackType( json.name, json.times, json.values, json.interpolation );
-
-			}
-
-		},
-
-		toJSON: function ( track ) {
-
-			var trackType = track.constructor;
-
-			var json;
-
-			// derived classes can define a static toJSON method
-			if ( trackType.toJSON !== undefined ) {
-
-				json = trackType.toJSON( track );
-
-			} else {
-
-				// by default, we assume the data can be serialized as-is
-				json = {
-
-					'name': track.name,
-					'times': AnimationUtils.convertArray( track.times, Array ),
-					'values': AnimationUtils.convertArray( track.values, Array )
-
-				};
-
-				var interpolation = track.getInterpolation();
-
-				if ( interpolation !== track.DefaultInterpolation ) {
-
-					json.interpolation = interpolation;
-
-				}
-
-			}
-
-			json.type = track.ValueTypeName; // mandatory
-
-			return json;
-
-		},
-
-		_getTrackTypeForValueTypeName: function ( typeName ) {
-
-			switch ( typeName.toLowerCase() ) {
-
-				case 'scalar':
-				case 'double':
-				case 'float':
-				case 'number':
-				case 'integer':
-
-					return NumberKeyframeTrack;
-
-				case 'vector':
-				case 'vector2':
-				case 'vector3':
-				case 'vector4':
-
-					return VectorKeyframeTrack;
-
-				case 'color':
-
-					return ColorKeyframeTrack;
-
-				case 'quaternion':
-
-					return QuaternionKeyframeTrack;
-
-				case 'bool':
-				case 'boolean':
-
-					return BooleanKeyframeTrack;
-
-				case 'string':
-
-					return StringKeyframeTrack;
-
-			}
-
-			throw new Error( 'THREE.KeyframeTrack: Unsupported typeName: ' + typeName );
-
-		}
-
-	} );
-
-	Object.assign( KeyframeTrack.prototype, {
-
-		constructor: KeyframeTrack,
-
-		TimeBufferType: Float32Array,
-
-		ValueBufferType: Float32Array,
-
-		DefaultInterpolation: InterpolateLinear,
-
-		InterpolantFactoryMethodDiscrete: function ( result ) {
-
-			return new DiscreteInterpolant( this.times, this.values, this.getValueSize(), result );
-
-		},
-
-		InterpolantFactoryMethodLinear: function ( result ) {
-
-			return new LinearInterpolant( this.times, this.values, this.getValueSize(), result );
-
-		},
-
-		InterpolantFactoryMethodSmooth: function ( result ) {
-
-			return new CubicInterpolant( this.times, this.values, this.getValueSize(), result );
-
-		},
-
-		setInterpolation: function ( interpolation ) {
-
-			var factoryMethod;
-
-			switch ( interpolation ) {
-
-				case InterpolateDiscrete:
-
-					factoryMethod = this.InterpolantFactoryMethodDiscrete;
-
-					break;
-
-				case InterpolateLinear:
-
-					factoryMethod = this.InterpolantFactoryMethodLinear;
-
-					break;
-
-				case InterpolateSmooth:
-
-					factoryMethod = this.InterpolantFactoryMethodSmooth;
-
-					break;
-
-			}
-
-			if ( factoryMethod === undefined ) {
-
-				var message = "unsupported interpolation for " +
-					this.ValueTypeName + " keyframe track named " + this.name;
-
-				if ( this.createInterpolant === undefined ) {
-
-					// fall back to default, unless the default itself is messed up
-					if ( interpolation !== this.DefaultInterpolation ) {
-
-						this.setInterpolation( this.DefaultInterpolation );
-
-					} else {
-
-						throw new Error( message ); // fatal, in this case
-
-					}
-
-				}
-
-				console.warn( 'THREE.KeyframeTrack:', message );
-				return;
-
-			}
-
-			this.createInterpolant = factoryMethod;
-
-		},
-
-		getInterpolation: function () {
-
-			switch ( this.createInterpolant ) {
-
-				case this.InterpolantFactoryMethodDiscrete:
-
-					return InterpolateDiscrete;
-
-				case this.InterpolantFactoryMethodLinear:
-
-					return InterpolateLinear;
-
-				case this.InterpolantFactoryMethodSmooth:
-
-					return InterpolateSmooth;
-
-			}
-
-		},
-
-		getValueSize: function () {
-
-			return this.values.length / this.times.length;
-
-		},
-
-		// move all keyframes either forwards or backwards in time
-		shift: function ( timeOffset ) {
-
-			if ( timeOffset !== 0.0 ) {
-
-				var times = this.times;
-
-				for ( var i = 0, n = times.length; i !== n; ++ i ) {
-
-					times[ i ] += timeOffset;
-
-				}
-
-			}
-
-			return this;
-
-		},
-
-		// scale all keyframe times by a factor (useful for frame <-> seconds conversions)
-		scale: function ( timeScale ) {
-
-			if ( timeScale !== 1.0 ) {
-
-				var times = this.times;
-
-				for ( var i = 0, n = times.length; i !== n; ++ i ) {
-
-					times[ i ] *= timeScale;
-
-				}
-
-			}
-
-			return this;
-
-		},
-
-		// removes keyframes before and after animation without changing any values within the range [startTime, endTime].
-		// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values
-		trim: function ( startTime, endTime ) {
-
-			var times = this.times,
-				nKeys = times.length,
-				from = 0,
-				to = nKeys - 1;
-
-			while ( from !== nKeys && times[ from ] < startTime ) {
-
-				++ from;
-
-			}
-
-			while ( to !== - 1 && times[ to ] > endTime ) {
-
-				-- to;
-
-			}
-
-			++ to; // inclusive -> exclusive bound
-
-			if ( from !== 0 || to !== nKeys ) {
-
-				// empty tracks are forbidden, so keep at least one keyframe
-				if ( from >= to ) to = Math.max( to, 1 ), from = to - 1;
-
-				var stride = this.getValueSize();
-				this.times = AnimationUtils.arraySlice( times, from, to );
-				this.values = AnimationUtils.arraySlice( this.values, from * stride, to * stride );
-
-			}
-
-			return this;
-
-		},
-
-		// ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable
-		validate: function () {
-
-			var valid = true;
-
-			var valueSize = this.getValueSize();
-			if ( valueSize - Math.floor( valueSize ) !== 0 ) {
-
-				console.error( 'THREE.KeyframeTrack: Invalid value size in track.', this );
-				valid = false;
-
-			}
-
-			var times = this.times,
-				values = this.values,
-
-				nKeys = times.length;
-
-			if ( nKeys === 0 ) {
-
-				console.error( 'THREE.KeyframeTrack: Track is empty.', this );
-				valid = false;
-
-			}
-
-			var prevTime = null;
-
-			for ( var i = 0; i !== nKeys; i ++ ) {
-
-				var currTime = times[ i ];
-
-				if ( typeof currTime === 'number' && isNaN( currTime ) ) {
-
-					console.error( 'THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime );
-					valid = false;
-					break;
-
-				}
-
-				if ( prevTime !== null && prevTime > currTime ) {
-
-					console.error( 'THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime );
-					valid = false;
-					break;
-
-				}
-
-				prevTime = currTime;
-
-			}
-
-			if ( values !== undefined ) {
-
-				if ( AnimationUtils.isTypedArray( values ) ) {
-
-					for ( var i = 0, n = values.length; i !== n; ++ i ) {
-
-						var value = values[ i ];
-
-						if ( isNaN( value ) ) {
-
-							console.error( 'THREE.KeyframeTrack: Value is not a valid number.', this, i, value );
-							valid = false;
-							break;
-
-						}
-
-					}
-
-				}
-
-			}
-
-			return valid;
-
-		},
-
-		// removes equivalent sequential keys as common in morph target sequences
-		// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)
-		optimize: function () {
-
-			var times = this.times,
-				values = this.values,
-				stride = this.getValueSize(),
-
-				smoothInterpolation = this.getInterpolation() === InterpolateSmooth,
-
-				writeIndex = 1,
-				lastIndex = times.length - 1;
-
-			for ( var i = 1; i < lastIndex; ++ i ) {
-
-				var keep = false;
-
-				var time = times[ i ];
-				var timeNext = times[ i + 1 ];
-
-				// remove adjacent keyframes scheduled at the same time
-
-				if ( time !== timeNext && ( i !== 1 || time !== time[ 0 ] ) ) {
-
-					if ( ! smoothInterpolation ) {
-
-						// remove unnecessary keyframes same as their neighbors
-
-						var offset = i * stride,
-							offsetP = offset - stride,
-							offsetN = offset + stride;
-
-						for ( var j = 0; j !== stride; ++ j ) {
-
-							var value = values[ offset + j ];
-
-							if ( value !== values[ offsetP + j ] ||
-								value !== values[ offsetN + j ] ) {
-
-								keep = true;
-								break;
-
-							}
-
-						}
-
-					} else {
-
-						keep = true;
-
-					}
-
-				}
-
-				// in-place compaction
-
-				if ( keep ) {
-
-					if ( i !== writeIndex ) {
-
-						times[ writeIndex ] = times[ i ];
-
-						var readOffset = i * stride,
-							writeOffset = writeIndex * stride;
-
-						for ( var j = 0; j !== stride; ++ j ) {
-
-							values[ writeOffset + j ] = values[ readOffset + j ];
-
-						}
-
-					}
-
-					++ writeIndex;
-
-				}
-
-			}
-
-			// flush last keyframe (compaction looks ahead)
-
-			if ( lastIndex > 0 ) {
-
-				times[ writeIndex ] = times[ lastIndex ];
-
-				for ( var readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++ j ) {
-
-					values[ writeOffset + j ] = values[ readOffset + j ];
-
-				}
-
-				++ writeIndex;
-
-			}
-
-			if ( writeIndex !== times.length ) {
-
-				this.times = AnimationUtils.arraySlice( times, 0, writeIndex );
-				this.values = AnimationUtils.arraySlice( values, 0, writeIndex * stride );
-
-			}
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 *
-	 * A Track of vectored keyframe values.
-	 *
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 */
-
-	function VectorKeyframeTrack( name, times, values, interpolation ) {
-
-		KeyframeTrack.call( this, name, times, values, interpolation );
-
-	}
-
-	VectorKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
-
-		constructor: VectorKeyframeTrack,
-
-		ValueTypeName: 'vector'
-
-		// ValueBufferType is inherited
-
-		// DefaultInterpolation is inherited
-
-	} );
-
-	/**
-	 *
-	 * Reusable set of Tracks that represent an animation.
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 */
-
-	function AnimationClip( name, duration, tracks ) {
-
-		this.name = name;
-		this.tracks = tracks;
-		this.duration = ( duration !== undefined ) ? duration : - 1;
-
-		this.uuid = _Math.generateUUID();
-
-		// this means it should figure out its duration by scanning the tracks
-		if ( this.duration < 0 ) {
-
-			this.resetDuration();
-
-		}
-
-		this.optimize();
-
-	}
-
-	Object.assign( AnimationClip, {
-
-		parse: function ( json ) {
-
-			var tracks = [],
-				jsonTracks = json.tracks,
-				frameTime = 1.0 / ( json.fps || 1.0 );
-
-			for ( var i = 0, n = jsonTracks.length; i !== n; ++ i ) {
-
-				tracks.push( KeyframeTrack.parse( jsonTracks[ i ] ).scale( frameTime ) );
-
-			}
-
-			return new AnimationClip( json.name, json.duration, tracks );
-
-		},
-
-		toJSON: function ( clip ) {
-
-			var tracks = [],
-				clipTracks = clip.tracks;
-
-			var json = {
-
-				'name': clip.name,
-				'duration': clip.duration,
-				'tracks': tracks
-
-			};
-
-			for ( var i = 0, n = clipTracks.length; i !== n; ++ i ) {
-
-				tracks.push( KeyframeTrack.toJSON( clipTracks[ i ] ) );
-
-			}
-
-			return json;
-
-		},
-
-		CreateFromMorphTargetSequence: function ( name, morphTargetSequence, fps, noLoop ) {
-
-			var numMorphTargets = morphTargetSequence.length;
-			var tracks = [];
-
-			for ( var i = 0; i < numMorphTargets; i ++ ) {
-
-				var times = [];
-				var values = [];
-
-				times.push(
-					( i + numMorphTargets - 1 ) % numMorphTargets,
-					i,
-					( i + 1 ) % numMorphTargets );
-
-				values.push( 0, 1, 0 );
-
-				var order = AnimationUtils.getKeyframeOrder( times );
-				times = AnimationUtils.sortedArray( times, 1, order );
-				values = AnimationUtils.sortedArray( values, 1, order );
-
-				// if there is a key at the first frame, duplicate it as the
-				// last frame as well for perfect loop.
-				if ( ! noLoop && times[ 0 ] === 0 ) {
-
-					times.push( numMorphTargets );
-					values.push( values[ 0 ] );
-
-				}
-
-				tracks.push(
-					new NumberKeyframeTrack(
-						'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',
-						times, values
-					).scale( 1.0 / fps ) );
-
-			}
-
-			return new AnimationClip( name, - 1, tracks );
-
-		},
-
-		findByName: function ( objectOrClipArray, name ) {
-
-			var clipArray = objectOrClipArray;
-
-			if ( ! Array.isArray( objectOrClipArray ) ) {
-
-				var o = objectOrClipArray;
-				clipArray = o.geometry && o.geometry.animations || o.animations;
-
-			}
-
-			for ( var i = 0; i < clipArray.length; i ++ ) {
-
-				if ( clipArray[ i ].name === name ) {
-
-					return clipArray[ i ];
-
-				}
-
-			}
-
-			return null;
-
-		},
-
-		CreateClipsFromMorphTargetSequences: function ( morphTargets, fps, noLoop ) {
-
-			var animationToMorphTargets = {};
-
-			// tested with https://regex101.com/ on trick sequences
-			// such flamingo_flyA_003, flamingo_run1_003, crdeath0059
-			var pattern = /^([\w-]*?)([\d]+)$/;
-
-			// sort morph target names into animation groups based
-			// patterns like Walk_001, Walk_002, Run_001, Run_002
-			for ( var i = 0, il = morphTargets.length; i < il; i ++ ) {
-
-				var morphTarget = morphTargets[ i ];
-				var parts = morphTarget.name.match( pattern );
-
-				if ( parts && parts.length > 1 ) {
-
-					var name = parts[ 1 ];
-
-					var animationMorphTargets = animationToMorphTargets[ name ];
-					if ( ! animationMorphTargets ) {
-
-						animationToMorphTargets[ name ] = animationMorphTargets = [];
-
-					}
-
-					animationMorphTargets.push( morphTarget );
-
-				}
-
-			}
-
-			var clips = [];
-
-			for ( var name in animationToMorphTargets ) {
-
-				clips.push( AnimationClip.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps, noLoop ) );
-
-			}
-
-			return clips;
-
-		},
-
-		// parse the animation.hierarchy format
-		parseAnimation: function ( animation, bones ) {
-
-			if ( ! animation ) {
-
-				console.error( 'THREE.AnimationClip: No animation in JSONLoader data.' );
-				return null;
-
-			}
-
-			var addNonemptyTrack = function ( trackType, trackName, animationKeys, propertyName, destTracks ) {
-
-				// only return track if there are actually keys.
-				if ( animationKeys.length !== 0 ) {
-
-					var times = [];
-					var values = [];
-
-					AnimationUtils.flattenJSON( animationKeys, times, values, propertyName );
-
-					// empty keys are filtered out, so check again
-					if ( times.length !== 0 ) {
-
-						destTracks.push( new trackType( trackName, times, values ) );
-
-					}
-
-				}
-
-			};
-
-			var tracks = [];
-
-			var clipName = animation.name || 'default';
-			// automatic length determination in AnimationClip.
-			var duration = animation.length || - 1;
-			var fps = animation.fps || 30;
-
-			var hierarchyTracks = animation.hierarchy || [];
-
-			for ( var h = 0; h < hierarchyTracks.length; h ++ ) {
-
-				var animationKeys = hierarchyTracks[ h ].keys;
-
-				// skip empty tracks
-				if ( ! animationKeys || animationKeys.length === 0 ) continue;
-
-				// process morph targets
-				if ( animationKeys[ 0 ].morphTargets ) {
-
-					// figure out all morph targets used in this track
-					var morphTargetNames = {};
-
-					for ( var k = 0; k < animationKeys.length; k ++ ) {
-
-						if ( animationKeys[ k ].morphTargets ) {
-
-							for ( var m = 0; m < animationKeys[ k ].morphTargets.length; m ++ ) {
-
-								morphTargetNames[ animationKeys[ k ].morphTargets[ m ] ] = - 1;
-
-							}
-
-						}
-
-					}
-
-					// create a track for each morph target with all zero
-					// morphTargetInfluences except for the keys in which
-					// the morphTarget is named.
-					for ( var morphTargetName in morphTargetNames ) {
-
-						var times = [];
-						var values = [];
-
-						for ( var m = 0; m !== animationKeys[ k ].morphTargets.length; ++ m ) {
-
-							var animationKey = animationKeys[ k ];
-
-							times.push( animationKey.time );
-							values.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 );
-
-						}
-
-						tracks.push( new NumberKeyframeTrack( '.morphTargetInfluence[' + morphTargetName + ']', times, values ) );
-
-					}
-
-					duration = morphTargetNames.length * ( fps || 1.0 );
-
-				} else {
-
-					// ...assume skeletal animation
-
-					var boneName = '.bones[' + bones[ h ].name + ']';
-
-					addNonemptyTrack(
-						VectorKeyframeTrack, boneName + '.position',
-						animationKeys, 'pos', tracks );
-
-					addNonemptyTrack(
-						QuaternionKeyframeTrack, boneName + '.quaternion',
-						animationKeys, 'rot', tracks );
-
-					addNonemptyTrack(
-						VectorKeyframeTrack, boneName + '.scale',
-						animationKeys, 'scl', tracks );
-
-				}
-
-			}
-
-			if ( tracks.length === 0 ) {
-
-				return null;
-
-			}
-
-			var clip = new AnimationClip( clipName, duration, tracks );
-
-			return clip;
-
-		}
-
-	} );
-
-	Object.assign( AnimationClip.prototype, {
-
-		resetDuration: function () {
-
-			var tracks = this.tracks, duration = 0;
-
-			for ( var i = 0, n = tracks.length; i !== n; ++ i ) {
-
-				var track = this.tracks[ i ];
-
-				duration = Math.max( duration, track.times[ track.times.length - 1 ] );
-
-			}
-
-			this.duration = duration;
-
-		},
-
-		trim: function () {
-
-			for ( var i = 0; i < this.tracks.length; i ++ ) {
-
-				this.tracks[ i ].trim( 0, this.duration );
-
-			}
-
-			return this;
-
-		},
-
-		optimize: function () {
-
-			for ( var i = 0; i < this.tracks.length; i ++ ) {
-
-				this.tracks[ i ].optimize();
-
-			}
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function MaterialLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-		this.textures = {};
-
-	}
-
-	Object.assign( MaterialLoader.prototype, {
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			var scope = this;
-
-			var loader = new FileLoader( scope.manager );
-			loader.load( url, function ( text ) {
-
-				onLoad( scope.parse( JSON.parse( text ) ) );
-
-			}, onProgress, onError );
-
-		},
-
-		setTextures: function ( value ) {
-
-			this.textures = value;
-
-		},
-
-		parse: function ( json ) {
-
-			var textures = this.textures;
-
-			function getTexture( name ) {
-
-				if ( textures[ name ] === undefined ) {
-
-					console.warn( 'THREE.MaterialLoader: Undefined texture', name );
-
-				}
-
-				return textures[ name ];
-
-			}
-
-			var material = new Materials[ json.type ]();
-
-			if ( json.uuid !== undefined ) material.uuid = json.uuid;
-			if ( json.name !== undefined ) material.name = json.name;
-			if ( json.color !== undefined ) material.color.setHex( json.color );
-			if ( json.roughness !== undefined ) material.roughness = json.roughness;
-			if ( json.metalness !== undefined ) material.metalness = json.metalness;
-			if ( json.emissive !== undefined ) material.emissive.setHex( json.emissive );
-			if ( json.specular !== undefined ) material.specular.setHex( json.specular );
-			if ( json.shininess !== undefined ) material.shininess = json.shininess;
-			if ( json.clearCoat !== undefined ) material.clearCoat = json.clearCoat;
-			if ( json.clearCoatRoughness !== undefined ) material.clearCoatRoughness = json.clearCoatRoughness;
-			if ( json.uniforms !== undefined ) material.uniforms = json.uniforms;
-			if ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;
-			if ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;
-			if ( json.vertexColors !== undefined ) material.vertexColors = json.vertexColors;
-			if ( json.fog !== undefined ) material.fog = json.fog;
-			if ( json.flatShading !== undefined ) material.flatShading = json.flatShading;
-			if ( json.blending !== undefined ) material.blending = json.blending;
-			if ( json.side !== undefined ) material.side = json.side;
-			if ( json.opacity !== undefined ) material.opacity = json.opacity;
-			if ( json.transparent !== undefined ) material.transparent = json.transparent;
-			if ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;
-			if ( json.depthTest !== undefined ) material.depthTest = json.depthTest;
-			if ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;
-			if ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;
-			if ( json.wireframe !== undefined ) material.wireframe = json.wireframe;
-			if ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;
-			if ( json.wireframeLinecap !== undefined ) material.wireframeLinecap = json.wireframeLinecap;
-			if ( json.wireframeLinejoin !== undefined ) material.wireframeLinejoin = json.wireframeLinejoin;
-
-			if ( json.rotation !== undefined ) material.rotation = json.rotation;
-
-			if ( json.linewidth !== 1 ) material.linewidth = json.linewidth;
-			if ( json.dashSize !== undefined ) material.dashSize = json.dashSize;
-			if ( json.gapSize !== undefined ) material.gapSize = json.gapSize;
-			if ( json.scale !== undefined ) material.scale = json.scale;
-
-			if ( json.polygonOffset !== undefined ) material.polygonOffset = json.polygonOffset;
-			if ( json.polygonOffsetFactor !== undefined ) material.polygonOffsetFactor = json.polygonOffsetFactor;
-			if ( json.polygonOffsetUnits !== undefined ) material.polygonOffsetUnits = json.polygonOffsetUnits;
-
-			if ( json.skinning !== undefined ) material.skinning = json.skinning;
-			if ( json.morphTargets !== undefined ) material.morphTargets = json.morphTargets;
-			if ( json.dithering !== undefined ) material.dithering = json.dithering;
-
-			if ( json.visible !== undefined ) material.visible = json.visible;
-			if ( json.userData !== undefined ) material.userData = json.userData;
-
-			// Deprecated
-
-			if ( json.shading !== undefined ) material.flatShading = json.shading === 1; // THREE.FlatShading
-
-			// for PointsMaterial
-
-			if ( json.size !== undefined ) material.size = json.size;
-			if ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;
-
-			// maps
-
-			if ( json.map !== undefined ) material.map = getTexture( json.map );
-
-			if ( json.alphaMap !== undefined ) {
-
-				material.alphaMap = getTexture( json.alphaMap );
-				material.transparent = true;
-
-			}
-
-			if ( json.bumpMap !== undefined ) material.bumpMap = getTexture( json.bumpMap );
-			if ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;
-
-			if ( json.normalMap !== undefined ) material.normalMap = getTexture( json.normalMap );
-			if ( json.normalScale !== undefined ) {
-
-				var normalScale = json.normalScale;
-
-				if ( Array.isArray( normalScale ) === false ) {
-
-					// Blender exporter used to export a scalar. See #7459
-
-					normalScale = [ normalScale, normalScale ];
-
-				}
-
-				material.normalScale = new Vector2().fromArray( normalScale );
-
-			}
-
-			if ( json.displacementMap !== undefined ) material.displacementMap = getTexture( json.displacementMap );
-			if ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;
-			if ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;
-
-			if ( json.roughnessMap !== undefined ) material.roughnessMap = getTexture( json.roughnessMap );
-			if ( json.metalnessMap !== undefined ) material.metalnessMap = getTexture( json.metalnessMap );
-
-			if ( json.emissiveMap !== undefined ) material.emissiveMap = getTexture( json.emissiveMap );
-			if ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;
-
-			if ( json.specularMap !== undefined ) material.specularMap = getTexture( json.specularMap );
-
-			if ( json.envMap !== undefined ) material.envMap = getTexture( json.envMap );
-
-			if ( json.reflectivity !== undefined ) material.reflectivity = json.reflectivity;
-
-			if ( json.lightMap !== undefined ) material.lightMap = getTexture( json.lightMap );
-			if ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;
-
-			if ( json.aoMap !== undefined ) material.aoMap = getTexture( json.aoMap );
-			if ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;
-
-			if ( json.gradientMap !== undefined ) material.gradientMap = getTexture( json.gradientMap );
-
-			return material;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function BufferGeometryLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-
-	}
-
-	Object.assign( BufferGeometryLoader.prototype, {
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			var scope = this;
-
-			var loader = new FileLoader( scope.manager );
-			loader.load( url, function ( text ) {
-
-				onLoad( scope.parse( JSON.parse( text ) ) );
-
-			}, onProgress, onError );
-
-		},
-
-		parse: function ( json ) {
-
-			var geometry = new BufferGeometry();
-
-			var index = json.data.index;
-
-			if ( index !== undefined ) {
-
-				var typedArray = new TYPED_ARRAYS[ index.type ]( index.array );
-				geometry.setIndex( new BufferAttribute( typedArray, 1 ) );
-
-			}
-
-			var attributes = json.data.attributes;
-
-			for ( var key in attributes ) {
-
-				var attribute = attributes[ key ];
-				var typedArray = new TYPED_ARRAYS[ attribute.type ]( attribute.array );
-
-				geometry.addAttribute( key, new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized ) );
-
-			}
-
-			var groups = json.data.groups || json.data.drawcalls || json.data.offsets;
-
-			if ( groups !== undefined ) {
-
-				for ( var i = 0, n = groups.length; i !== n; ++ i ) {
-
-					var group = groups[ i ];
-
-					geometry.addGroup( group.start, group.count, group.materialIndex );
-
-				}
-
-			}
-
-			var boundingSphere = json.data.boundingSphere;
-
-			if ( boundingSphere !== undefined ) {
-
-				var center = new Vector3();
-
-				if ( boundingSphere.center !== undefined ) {
-
-					center.fromArray( boundingSphere.center );
-
-				}
-
-				geometry.boundingSphere = new Sphere( center, boundingSphere.radius );
-
-			}
-
-			return geometry;
-
-		}
-
-	} );
-
-	var TYPED_ARRAYS = {
-		Int8Array: Int8Array,
-		Uint8Array: Uint8Array,
-		// Workaround for IE11 pre KB2929437. See #11440
-		Uint8ClampedArray: typeof Uint8ClampedArray !== 'undefined' ? Uint8ClampedArray : Uint8Array,
-		Int16Array: Int16Array,
-		Uint16Array: Uint16Array,
-		Int32Array: Int32Array,
-		Uint32Array: Uint32Array,
-		Float32Array: Float32Array,
-		Float64Array: Float64Array
-	};
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function Loader() {}
-
-	Loader.Handlers = {
-
-		handlers: [],
-
-		add: function ( regex, loader ) {
-
-			this.handlers.push( regex, loader );
-
-		},
-
-		get: function ( file ) {
-
-			var handlers = this.handlers;
-
-			for ( var i = 0, l = handlers.length; i < l; i += 2 ) {
-
-				var regex = handlers[ i ];
-				var loader = handlers[ i + 1 ];
-
-				if ( regex.test( file ) ) {
-
-					return loader;
-
-				}
-
-			}
-
-			return null;
-
-		}
-
-	};
-
-	Object.assign( Loader.prototype, {
-
-		crossOrigin: undefined,
-
-		onLoadStart: function () {},
-
-		onLoadProgress: function () {},
-
-		onLoadComplete: function () {},
-
-		initMaterials: function ( materials, texturePath, crossOrigin ) {
-
-			var array = [];
-
-			for ( var i = 0; i < materials.length; ++ i ) {
-
-				array[ i ] = this.createMaterial( materials[ i ], texturePath, crossOrigin );
-
-			}
-
-			return array;
-
-		},
-
-		createMaterial: ( function () {
-
-			var BlendingMode = {
-				NoBlending: NoBlending,
-				NormalBlending: NormalBlending,
-				AdditiveBlending: AdditiveBlending,
-				SubtractiveBlending: SubtractiveBlending,
-				MultiplyBlending: MultiplyBlending,
-				CustomBlending: CustomBlending
-			};
-
-			var color = new Color();
-			var textureLoader = new TextureLoader();
-			var materialLoader = new MaterialLoader();
-
-			return function createMaterial( m, texturePath, crossOrigin ) {
-
-				// convert from old material format
-
-				var textures = {};
-
-				function loadTexture( path, repeat, offset, wrap, anisotropy ) {
-
-					var fullPath = texturePath + path;
-					var loader = Loader.Handlers.get( fullPath );
-
-					var texture;
-
-					if ( loader !== null ) {
-
-						texture = loader.load( fullPath );
-
-					} else {
-
-						textureLoader.setCrossOrigin( crossOrigin );
-						texture = textureLoader.load( fullPath );
-
-					}
-
-					if ( repeat !== undefined ) {
-
-						texture.repeat.fromArray( repeat );
-
-						if ( repeat[ 0 ] !== 1 ) texture.wrapS = RepeatWrapping;
-						if ( repeat[ 1 ] !== 1 ) texture.wrapT = RepeatWrapping;
-
-					}
-
-					if ( offset !== undefined ) {
-
-						texture.offset.fromArray( offset );
-
-					}
-
-					if ( wrap !== undefined ) {
-
-						if ( wrap[ 0 ] === 'repeat' ) texture.wrapS = RepeatWrapping;
-						if ( wrap[ 0 ] === 'mirror' ) texture.wrapS = MirroredRepeatWrapping;
-
-						if ( wrap[ 1 ] === 'repeat' ) texture.wrapT = RepeatWrapping;
-						if ( wrap[ 1 ] === 'mirror' ) texture.wrapT = MirroredRepeatWrapping;
-
-					}
-
-					if ( anisotropy !== undefined ) {
-
-						texture.anisotropy = anisotropy;
-
-					}
-
-					var uuid = _Math.generateUUID();
-
-					textures[ uuid ] = texture;
-
-					return uuid;
-
-				}
-
-				//
-
-				var json = {
-					uuid: _Math.generateUUID(),
-					type: 'MeshLambertMaterial'
-				};
-
-				for ( var name in m ) {
-
-					var value = m[ name ];
-
-					switch ( name ) {
-
-						case 'DbgColor':
-						case 'DbgIndex':
-						case 'opticalDensity':
-						case 'illumination':
-							break;
-						case 'DbgName':
-							json.name = value;
-							break;
-						case 'blending':
-							json.blending = BlendingMode[ value ];
-							break;
-						case 'colorAmbient':
-						case 'mapAmbient':
-							console.warn( 'THREE.Loader.createMaterial:', name, 'is no longer supported.' );
-							break;
-						case 'colorDiffuse':
-							json.color = color.fromArray( value ).getHex();
-							break;
-						case 'colorSpecular':
-							json.specular = color.fromArray( value ).getHex();
-							break;
-						case 'colorEmissive':
-							json.emissive = color.fromArray( value ).getHex();
-							break;
-						case 'specularCoef':
-							json.shininess = value;
-							break;
-						case 'shading':
-							if ( value.toLowerCase() === 'basic' ) json.type = 'MeshBasicMaterial';
-							if ( value.toLowerCase() === 'phong' ) json.type = 'MeshPhongMaterial';
-							if ( value.toLowerCase() === 'standard' ) json.type = 'MeshStandardMaterial';
-							break;
-						case 'mapDiffuse':
-							json.map = loadTexture( value, m.mapDiffuseRepeat, m.mapDiffuseOffset, m.mapDiffuseWrap, m.mapDiffuseAnisotropy );
-							break;
-						case 'mapDiffuseRepeat':
-						case 'mapDiffuseOffset':
-						case 'mapDiffuseWrap':
-						case 'mapDiffuseAnisotropy':
-							break;
-						case 'mapEmissive':
-							json.emissiveMap = loadTexture( value, m.mapEmissiveRepeat, m.mapEmissiveOffset, m.mapEmissiveWrap, m.mapEmissiveAnisotropy );
-							break;
-						case 'mapEmissiveRepeat':
-						case 'mapEmissiveOffset':
-						case 'mapEmissiveWrap':
-						case 'mapEmissiveAnisotropy':
-							break;
-						case 'mapLight':
-							json.lightMap = loadTexture( value, m.mapLightRepeat, m.mapLightOffset, m.mapLightWrap, m.mapLightAnisotropy );
-							break;
-						case 'mapLightRepeat':
-						case 'mapLightOffset':
-						case 'mapLightWrap':
-						case 'mapLightAnisotropy':
-							break;
-						case 'mapAO':
-							json.aoMap = loadTexture( value, m.mapAORepeat, m.mapAOOffset, m.mapAOWrap, m.mapAOAnisotropy );
-							break;
-						case 'mapAORepeat':
-						case 'mapAOOffset':
-						case 'mapAOWrap':
-						case 'mapAOAnisotropy':
-							break;
-						case 'mapBump':
-							json.bumpMap = loadTexture( value, m.mapBumpRepeat, m.mapBumpOffset, m.mapBumpWrap, m.mapBumpAnisotropy );
-							break;
-						case 'mapBumpScale':
-							json.bumpScale = value;
-							break;
-						case 'mapBumpRepeat':
-						case 'mapBumpOffset':
-						case 'mapBumpWrap':
-						case 'mapBumpAnisotropy':
-							break;
-						case 'mapNormal':
-							json.normalMap = loadTexture( value, m.mapNormalRepeat, m.mapNormalOffset, m.mapNormalWrap, m.mapNormalAnisotropy );
-							break;
-						case 'mapNormalFactor':
-							json.normalScale = value;
-							break;
-						case 'mapNormalRepeat':
-						case 'mapNormalOffset':
-						case 'mapNormalWrap':
-						case 'mapNormalAnisotropy':
-							break;
-						case 'mapSpecular':
-							json.specularMap = loadTexture( value, m.mapSpecularRepeat, m.mapSpecularOffset, m.mapSpecularWrap, m.mapSpecularAnisotropy );
-							break;
-						case 'mapSpecularRepeat':
-						case 'mapSpecularOffset':
-						case 'mapSpecularWrap':
-						case 'mapSpecularAnisotropy':
-							break;
-						case 'mapMetalness':
-							json.metalnessMap = loadTexture( value, m.mapMetalnessRepeat, m.mapMetalnessOffset, m.mapMetalnessWrap, m.mapMetalnessAnisotropy );
-							break;
-						case 'mapMetalnessRepeat':
-						case 'mapMetalnessOffset':
-						case 'mapMetalnessWrap':
-						case 'mapMetalnessAnisotropy':
-							break;
-						case 'mapRoughness':
-							json.roughnessMap = loadTexture( value, m.mapRoughnessRepeat, m.mapRoughnessOffset, m.mapRoughnessWrap, m.mapRoughnessAnisotropy );
-							break;
-						case 'mapRoughnessRepeat':
-						case 'mapRoughnessOffset':
-						case 'mapRoughnessWrap':
-						case 'mapRoughnessAnisotropy':
-							break;
-						case 'mapAlpha':
-							json.alphaMap = loadTexture( value, m.mapAlphaRepeat, m.mapAlphaOffset, m.mapAlphaWrap, m.mapAlphaAnisotropy );
-							break;
-						case 'mapAlphaRepeat':
-						case 'mapAlphaOffset':
-						case 'mapAlphaWrap':
-						case 'mapAlphaAnisotropy':
-							break;
-						case 'flipSided':
-							json.side = BackSide;
-							break;
-						case 'doubleSided':
-							json.side = DoubleSide;
-							break;
-						case 'transparency':
-							console.warn( 'THREE.Loader.createMaterial: transparency has been renamed to opacity' );
-							json.opacity = value;
-							break;
-						case 'depthTest':
-						case 'depthWrite':
-						case 'colorWrite':
-						case 'opacity':
-						case 'reflectivity':
-						case 'transparent':
-						case 'visible':
-						case 'wireframe':
-							json[ name ] = value;
-							break;
-						case 'vertexColors':
-							if ( value === true ) json.vertexColors = VertexColors;
-							if ( value === 'face' ) json.vertexColors = FaceColors;
-							break;
-						default:
-							console.error( 'THREE.Loader.createMaterial: Unsupported', name, value );
-							break;
-
-					}
-
-				}
-
-				if ( json.type === 'MeshBasicMaterial' ) delete json.emissive;
-				if ( json.type !== 'MeshPhongMaterial' ) delete json.specular;
-
-				if ( json.opacity < 1 ) json.transparent = true;
-
-				materialLoader.setTextures( textures );
-
-				return materialLoader.parse( json );
-
-			};
-
-		} )()
-
-	} );
-
-	/**
-	 * @author Don McCurdy / https://www.donmccurdy.com
-	 */
-
-	var LoaderUtils = {
-
-		decodeText: function ( array ) {
-
-			if ( typeof TextDecoder !== 'undefined' ) {
-
-				return new TextDecoder().decode( array );
-
-			}
-
-			// Avoid the String.fromCharCode.apply(null, array) shortcut, which
-			// throws a "maximum call stack size exceeded" error for large arrays.
-
-			var s = '';
-
-			for ( var i = 0, il = array.length; i < il; i ++ ) {
-
-				// Implicitly assumes little-endian.
-				s += String.fromCharCode( array[ i ] );
-
-			}
-
-			// Merges multi-byte utf-8 characters.
-			return decodeURIComponent( escape( s ) );
-
-		},
-
-		extractUrlBase: function ( url ) {
-
-			var parts = url.split( '/' );
-
-			if ( parts.length === 1 ) return './';
-
-			parts.pop();
-
-			return parts.join( '/' ) + '/';
-
-		}
-
-	};
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function JSONLoader( manager ) {
-
-		if ( typeof manager === 'boolean' ) {
-
-			console.warn( 'THREE.JSONLoader: showStatus parameter has been removed from constructor.' );
-			manager = undefined;
-
-		}
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-
-		this.withCredentials = false;
-
-	}
-
-	Object.assign( JSONLoader.prototype, {
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			var scope = this;
-
-			var texturePath = this.texturePath && ( typeof this.texturePath === 'string' ) ? this.texturePath : LoaderUtils.extractUrlBase( url );
-
-			var loader = new FileLoader( this.manager );
-			loader.setWithCredentials( this.withCredentials );
-			loader.load( url, function ( text ) {
-
-				var json = JSON.parse( text );
-				var metadata = json.metadata;
-
-				if ( metadata !== undefined ) {
-
-					var type = metadata.type;
-
-					if ( type !== undefined ) {
-
-						if ( type.toLowerCase() === 'object' ) {
-
-							console.error( 'THREE.JSONLoader: ' + url + ' should be loaded with THREE.ObjectLoader instead.' );
-							return;
-
-						}
-
-					}
-
-				}
-
-				var object = scope.parse( json, texturePath );
-				onLoad( object.geometry, object.materials );
-
-			}, onProgress, onError );
-
-		},
-
-		setTexturePath: function ( value ) {
-
-			this.texturePath = value;
-
-		},
-
-		parse: ( function () {
-
-			function parseModel( json, geometry ) {
-
-				function isBitSet( value, position ) {
-
-					return value & ( 1 << position );
-
-				}
-
-				var i, j, fi,
-
-					offset, zLength,
-
-					colorIndex, normalIndex, uvIndex, materialIndex,
-
-					type,
-					isQuad,
-					hasMaterial,
-					hasFaceVertexUv,
-					hasFaceNormal, hasFaceVertexNormal,
-					hasFaceColor, hasFaceVertexColor,
-
-					vertex, face, faceA, faceB, hex, normal,
-
-					uvLayer, uv, u, v,
-
-					faces = json.faces,
-					vertices = json.vertices,
-					normals = json.normals,
-					colors = json.colors,
-
-					scale = json.scale,
-
-					nUvLayers = 0;
-
-
-				if ( json.uvs !== undefined ) {
-
-					// disregard empty arrays
-
-					for ( i = 0; i < json.uvs.length; i ++ ) {
-
-						if ( json.uvs[ i ].length ) nUvLayers ++;
-
-					}
-
-					for ( i = 0; i < nUvLayers; i ++ ) {
-
-						geometry.faceVertexUvs[ i ] = [];
-
-					}
-
-				}
-
-				offset = 0;
-				zLength = vertices.length;
-
-				while ( offset < zLength ) {
-
-					vertex = new Vector3();
-
-					vertex.x = vertices[ offset ++ ] * scale;
-					vertex.y = vertices[ offset ++ ] * scale;
-					vertex.z = vertices[ offset ++ ] * scale;
-
-					geometry.vertices.push( vertex );
-
-				}
-
-				offset = 0;
-				zLength = faces.length;
-
-				while ( offset < zLength ) {
-
-					type = faces[ offset ++ ];
-
-					isQuad = isBitSet( type, 0 );
-					hasMaterial = isBitSet( type, 1 );
-					hasFaceVertexUv = isBitSet( type, 3 );
-					hasFaceNormal = isBitSet( type, 4 );
-					hasFaceVertexNormal = isBitSet( type, 5 );
-					hasFaceColor = isBitSet( type, 6 );
-					hasFaceVertexColor = isBitSet( type, 7 );
-
-					// console.log("type", type, "bits", isQuad, hasMaterial, hasFaceVertexUv, hasFaceNormal, hasFaceVertexNormal, hasFaceColor, hasFaceVertexColor);
-
-					if ( isQuad ) {
-
-						faceA = new Face3();
-						faceA.a = faces[ offset ];
-						faceA.b = faces[ offset + 1 ];
-						faceA.c = faces[ offset + 3 ];
-
-						faceB = new Face3();
-						faceB.a = faces[ offset + 1 ];
-						faceB.b = faces[ offset + 2 ];
-						faceB.c = faces[ offset + 3 ];
-
-						offset += 4;
-
-						if ( hasMaterial ) {
-
-							materialIndex = faces[ offset ++ ];
-							faceA.materialIndex = materialIndex;
-							faceB.materialIndex = materialIndex;
-
-						}
-
-						// to get face <=> uv index correspondence
-
-						fi = geometry.faces.length;
-
-						if ( hasFaceVertexUv ) {
-
-							for ( i = 0; i < nUvLayers; i ++ ) {
-
-								uvLayer = json.uvs[ i ];
-
-								geometry.faceVertexUvs[ i ][ fi ] = [];
-								geometry.faceVertexUvs[ i ][ fi + 1 ] = [];
-
-								for ( j = 0; j < 4; j ++ ) {
-
-									uvIndex = faces[ offset ++ ];
-
-									u = uvLayer[ uvIndex * 2 ];
-									v = uvLayer[ uvIndex * 2 + 1 ];
-
-									uv = new Vector2( u, v );
-
-									if ( j !== 2 ) geometry.faceVertexUvs[ i ][ fi ].push( uv );
-									if ( j !== 0 ) geometry.faceVertexUvs[ i ][ fi + 1 ].push( uv );
-
-								}
-
-							}
-
-						}
-
-						if ( hasFaceNormal ) {
-
-							normalIndex = faces[ offset ++ ] * 3;
-
-							faceA.normal.set(
-								normals[ normalIndex ++ ],
-								normals[ normalIndex ++ ],
-								normals[ normalIndex ]
-							);
-
-							faceB.normal.copy( faceA.normal );
-
-						}
-
-						if ( hasFaceVertexNormal ) {
-
-							for ( i = 0; i < 4; i ++ ) {
-
-								normalIndex = faces[ offset ++ ] * 3;
-
-								normal = new Vector3(
-									normals[ normalIndex ++ ],
-									normals[ normalIndex ++ ],
-									normals[ normalIndex ]
-								);
-
-
-								if ( i !== 2 ) faceA.vertexNormals.push( normal );
-								if ( i !== 0 ) faceB.vertexNormals.push( normal );
-
-							}
-
-						}
-
-
-						if ( hasFaceColor ) {
-
-							colorIndex = faces[ offset ++ ];
-							hex = colors[ colorIndex ];
-
-							faceA.color.setHex( hex );
-							faceB.color.setHex( hex );
-
-						}
-
-
-						if ( hasFaceVertexColor ) {
-
-							for ( i = 0; i < 4; i ++ ) {
-
-								colorIndex = faces[ offset ++ ];
-								hex = colors[ colorIndex ];
-
-								if ( i !== 2 ) faceA.vertexColors.push( new Color( hex ) );
-								if ( i !== 0 ) faceB.vertexColors.push( new Color( hex ) );
-
-							}
-
-						}
-
-						geometry.faces.push( faceA );
-						geometry.faces.push( faceB );
-
-					} else {
-
-						face = new Face3();
-						face.a = faces[ offset ++ ];
-						face.b = faces[ offset ++ ];
-						face.c = faces[ offset ++ ];
-
-						if ( hasMaterial ) {
-
-							materialIndex = faces[ offset ++ ];
-							face.materialIndex = materialIndex;
-
-						}
-
-						// to get face <=> uv index correspondence
-
-						fi = geometry.faces.length;
-
-						if ( hasFaceVertexUv ) {
-
-							for ( i = 0; i < nUvLayers; i ++ ) {
-
-								uvLayer = json.uvs[ i ];
-
-								geometry.faceVertexUvs[ i ][ fi ] = [];
-
-								for ( j = 0; j < 3; j ++ ) {
-
-									uvIndex = faces[ offset ++ ];
-
-									u = uvLayer[ uvIndex * 2 ];
-									v = uvLayer[ uvIndex * 2 + 1 ];
-
-									uv = new Vector2( u, v );
-
-									geometry.faceVertexUvs[ i ][ fi ].push( uv );
-
-								}
-
-							}
-
-						}
-
-						if ( hasFaceNormal ) {
-
-							normalIndex = faces[ offset ++ ] * 3;
-
-							face.normal.set(
-								normals[ normalIndex ++ ],
-								normals[ normalIndex ++ ],
-								normals[ normalIndex ]
-							);
-
-						}
-
-						if ( hasFaceVertexNormal ) {
-
-							for ( i = 0; i < 3; i ++ ) {
-
-								normalIndex = faces[ offset ++ ] * 3;
-
-								normal = new Vector3(
-									normals[ normalIndex ++ ],
-									normals[ normalIndex ++ ],
-									normals[ normalIndex ]
-								);
-
-								face.vertexNormals.push( normal );
-
-							}
-
-						}
-
-
-						if ( hasFaceColor ) {
-
-							colorIndex = faces[ offset ++ ];
-							face.color.setHex( colors[ colorIndex ] );
-
-						}
-
-
-						if ( hasFaceVertexColor ) {
-
-							for ( i = 0; i < 3; i ++ ) {
-
-								colorIndex = faces[ offset ++ ];
-								face.vertexColors.push( new Color( colors[ colorIndex ] ) );
-
-							}
-
-						}
-
-						geometry.faces.push( face );
-
-					}
-
-				}
-
-			}
-
-			function parseSkin( json, geometry ) {
-
-				var influencesPerVertex = ( json.influencesPerVertex !== undefined ) ? json.influencesPerVertex : 2;
-
-				if ( json.skinWeights ) {
-
-					for ( var i = 0, l = json.skinWeights.length; i < l; i += influencesPerVertex ) {
-
-						var x = json.skinWeights[ i ];
-						var y = ( influencesPerVertex > 1 ) ? json.skinWeights[ i + 1 ] : 0;
-						var z = ( influencesPerVertex > 2 ) ? json.skinWeights[ i + 2 ] : 0;
-						var w = ( influencesPerVertex > 3 ) ? json.skinWeights[ i + 3 ] : 0;
-
-						geometry.skinWeights.push( new Vector4( x, y, z, w ) );
-
-					}
-
-				}
-
-				if ( json.skinIndices ) {
-
-					for ( var i = 0, l = json.skinIndices.length; i < l; i += influencesPerVertex ) {
-
-						var a = json.skinIndices[ i ];
-						var b = ( influencesPerVertex > 1 ) ? json.skinIndices[ i + 1 ] : 0;
-						var c = ( influencesPerVertex > 2 ) ? json.skinIndices[ i + 2 ] : 0;
-						var d = ( influencesPerVertex > 3 ) ? json.skinIndices[ i + 3 ] : 0;
-
-						geometry.skinIndices.push( new Vector4( a, b, c, d ) );
-
-					}
-
-				}
-
-				geometry.bones = json.bones;
-
-				if ( geometry.bones && geometry.bones.length > 0 && ( geometry.skinWeights.length !== geometry.skinIndices.length || geometry.skinIndices.length !== geometry.vertices.length ) ) {
-
-					console.warn( 'When skinning, number of vertices (' + geometry.vertices.length + '), skinIndices (' +
-						geometry.skinIndices.length + '), and skinWeights (' + geometry.skinWeights.length + ') should match.' );
-
-				}
-
-			}
-
-			function parseMorphing( json, geometry ) {
-
-				var scale = json.scale;
-
-				if ( json.morphTargets !== undefined ) {
-
-					for ( var i = 0, l = json.morphTargets.length; i < l; i ++ ) {
-
-						geometry.morphTargets[ i ] = {};
-						geometry.morphTargets[ i ].name = json.morphTargets[ i ].name;
-						geometry.morphTargets[ i ].vertices = [];
-
-						var dstVertices = geometry.morphTargets[ i ].vertices;
-						var srcVertices = json.morphTargets[ i ].vertices;
-
-						for ( var v = 0, vl = srcVertices.length; v < vl; v += 3 ) {
-
-							var vertex = new Vector3();
-							vertex.x = srcVertices[ v ] * scale;
-							vertex.y = srcVertices[ v + 1 ] * scale;
-							vertex.z = srcVertices[ v + 2 ] * scale;
-
-							dstVertices.push( vertex );
-
-						}
-
-					}
-
-				}
-
-				if ( json.morphColors !== undefined && json.morphColors.length > 0 ) {
-
-					console.warn( 'THREE.JSONLoader: "morphColors" no longer supported. Using them as face colors.' );
-
-					var faces = geometry.faces;
-					var morphColors = json.morphColors[ 0 ].colors;
-
-					for ( var i = 0, l = faces.length; i < l; i ++ ) {
-
-						faces[ i ].color.fromArray( morphColors, i * 3 );
-
-					}
-
-				}
-
-			}
-
-			function parseAnimations( json, geometry ) {
-
-				var outputAnimations = [];
-
-				// parse old style Bone/Hierarchy animations
-				var animations = [];
-
-				if ( json.animation !== undefined ) {
-
-					animations.push( json.animation );
-
-				}
-
-				if ( json.animations !== undefined ) {
-
-					if ( json.animations.length ) {
-
-						animations = animations.concat( json.animations );
-
-					} else {
-
-						animations.push( json.animations );
-
-					}
-
-				}
-
-				for ( var i = 0; i < animations.length; i ++ ) {
-
-					var clip = AnimationClip.parseAnimation( animations[ i ], geometry.bones );
-					if ( clip ) outputAnimations.push( clip );
-
-				}
-
-				// parse implicit morph animations
-				if ( geometry.morphTargets ) {
-
-					// TODO: Figure out what an appropraite FPS is for morph target animations -- defaulting to 10, but really it is completely arbitrary.
-					var morphAnimationClips = AnimationClip.CreateClipsFromMorphTargetSequences( geometry.morphTargets, 10 );
-					outputAnimations = outputAnimations.concat( morphAnimationClips );
-
-				}
-
-				if ( outputAnimations.length > 0 ) geometry.animations = outputAnimations;
-
-			}
-
-			return function parse( json, texturePath ) {
-
-				if ( json.data !== undefined ) {
-
-					// Geometry 4.0 spec
-					json = json.data;
-
-				}
-
-				if ( json.scale !== undefined ) {
-
-					json.scale = 1.0 / json.scale;
-
-				} else {
-
-					json.scale = 1.0;
-
-				}
-
-				var geometry = new Geometry();
-
-				parseModel( json, geometry );
-				parseSkin( json, geometry );
-				parseMorphing( json, geometry );
-				parseAnimations( json, geometry );
-
-				geometry.computeFaceNormals();
-				geometry.computeBoundingSphere();
-
-				if ( json.materials === undefined || json.materials.length === 0 ) {
-
-					return { geometry: geometry };
-
-				} else {
-
-					var materials = Loader.prototype.initMaterials( json.materials, texturePath, this.crossOrigin );
-
-					return { geometry: geometry, materials: materials };
-
-				}
-
-			};
-
-		} )()
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function ObjectLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-		this.texturePath = '';
-
-	}
-
-	Object.assign( ObjectLoader.prototype, {
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			if ( this.texturePath === '' ) {
-
-				this.texturePath = url.substring( 0, url.lastIndexOf( '/' ) + 1 );
-
-			}
-
-			var scope = this;
-
-			var loader = new FileLoader( scope.manager );
-			loader.load( url, function ( text ) {
-
-				var json = null;
-
-				try {
-
-					json = JSON.parse( text );
-
-				} catch ( error ) {
-
-					if ( onError !== undefined ) onError( error );
-
-					console.error( 'THREE:ObjectLoader: Can\'t parse ' + url + '.', error.message );
-
-					return;
-
-				}
-
-				var metadata = json.metadata;
-
-				if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {
-
-					console.error( 'THREE.ObjectLoader: Can\'t load ' + url + '. Use THREE.JSONLoader instead.' );
-					return;
-
-				}
-
-				scope.parse( json, onLoad );
-
-			}, onProgress, onError );
-
-		},
-
-		setTexturePath: function ( value ) {
-
-			this.texturePath = value;
-
-		},
-
-		setCrossOrigin: function ( value ) {
-
-			this.crossOrigin = value;
-
-		},
-
-		parse: function ( json, onLoad ) {
-
-			var shapes = this.parseShape( json.shapes );
-			var geometries = this.parseGeometries( json.geometries, shapes );
-
-			var images = this.parseImages( json.images, function () {
-
-				if ( onLoad !== undefined ) onLoad( object );
-
-			} );
-
-			var textures = this.parseTextures( json.textures, images );
-			var materials = this.parseMaterials( json.materials, textures );
-
-			var object = this.parseObject( json.object, geometries, materials );
-
-			if ( json.animations ) {
-
-				object.animations = this.parseAnimations( json.animations );
-
-			}
-
-			if ( json.images === undefined || json.images.length === 0 ) {
-
-				if ( onLoad !== undefined ) onLoad( object );
-
-			}
-
-			return object;
-
-		},
-
-		parseShape: function ( json ) {
-
-			var shapes = {};
-
-			if ( json !== undefined ) {
-
-				for ( var i = 0, l = json.length; i < l; i ++ ) {
-
-					var shape = new Shape().fromJSON( json[ i ] );
-
-					shapes[ shape.uuid ] = shape;
-
-				}
-
-			}
-
-			return shapes;
-
-		},
-
-		parseGeometries: function ( json, shapes ) {
-
-			var geometries = {};
-
-			if ( json !== undefined ) {
-
-				var geometryLoader = new JSONLoader();
-				var bufferGeometryLoader = new BufferGeometryLoader();
-
-				for ( var i = 0, l = json.length; i < l; i ++ ) {
-
-					var geometry;
-					var data = json[ i ];
-
-					switch ( data.type ) {
-
-						case 'PlaneGeometry':
-						case 'PlaneBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.width,
-								data.height,
-								data.widthSegments,
-								data.heightSegments
-							);
-
-							break;
-
-						case 'BoxGeometry':
-						case 'BoxBufferGeometry':
-						case 'CubeGeometry': // backwards compatible
-
-							geometry = new Geometries[ data.type ](
-								data.width,
-								data.height,
-								data.depth,
-								data.widthSegments,
-								data.heightSegments,
-								data.depthSegments
-							);
-
-							break;
-
-						case 'CircleGeometry':
-						case 'CircleBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.radius,
-								data.segments,
-								data.thetaStart,
-								data.thetaLength
-							);
-
-							break;
-
-						case 'CylinderGeometry':
-						case 'CylinderBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.radiusTop,
-								data.radiusBottom,
-								data.height,
-								data.radialSegments,
-								data.heightSegments,
-								data.openEnded,
-								data.thetaStart,
-								data.thetaLength
-							);
-
-							break;
-
-						case 'ConeGeometry':
-						case 'ConeBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.radius,
-								data.height,
-								data.radialSegments,
-								data.heightSegments,
-								data.openEnded,
-								data.thetaStart,
-								data.thetaLength
-							);
-
-							break;
-
-						case 'SphereGeometry':
-						case 'SphereBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.radius,
-								data.widthSegments,
-								data.heightSegments,
-								data.phiStart,
-								data.phiLength,
-								data.thetaStart,
-								data.thetaLength
-							);
-
-							break;
-
-						case 'DodecahedronGeometry':
-						case 'DodecahedronBufferGeometry':
-						case 'IcosahedronGeometry':
-						case 'IcosahedronBufferGeometry':
-						case 'OctahedronGeometry':
-						case 'OctahedronBufferGeometry':
-						case 'TetrahedronGeometry':
-						case 'TetrahedronBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.radius,
-								data.detail
-							);
-
-							break;
-
-						case 'RingGeometry':
-						case 'RingBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.innerRadius,
-								data.outerRadius,
-								data.thetaSegments,
-								data.phiSegments,
-								data.thetaStart,
-								data.thetaLength
-							);
-
-							break;
-
-						case 'TorusGeometry':
-						case 'TorusBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.radius,
-								data.tube,
-								data.radialSegments,
-								data.tubularSegments,
-								data.arc
-							);
-
-							break;
-
-						case 'TorusKnotGeometry':
-						case 'TorusKnotBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.radius,
-								data.tube,
-								data.tubularSegments,
-								data.radialSegments,
-								data.p,
-								data.q
-							);
-
-							break;
-
-						case 'LatheGeometry':
-						case 'LatheBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.points,
-								data.segments,
-								data.phiStart,
-								data.phiLength
-							);
-
-							break;
-
-						case 'PolyhedronGeometry':
-						case 'PolyhedronBufferGeometry':
-
-							geometry = new Geometries[ data.type ](
-								data.vertices,
-								data.indices,
-								data.radius,
-								data.details
-							);
-
-							break;
-
-						case 'ShapeGeometry':
-						case 'ShapeBufferGeometry':
-
-							var geometryShapes = [];
-
-							for ( var i = 0, l = data.shapes.length; i < l; i ++ ) {
-
-								var shape = shapes[ data.shapes[ i ] ];
-
-								geometryShapes.push( shape );
-
-							}
-
-							geometry = new Geometries[ data.type ](
-								geometryShapes,
-								data.curveSegments
-							);
-
-							break;
-
-						case 'BufferGeometry':
-
-							geometry = bufferGeometryLoader.parse( data );
-
-							break;
-
-						case 'Geometry':
-
-							geometry = geometryLoader.parse( data, this.texturePath ).geometry;
-
-							break;
-
-						default:
-
-							console.warn( 'THREE.ObjectLoader: Unsupported geometry type "' + data.type + '"' );
-
-							continue;
-
-					}
-
-					geometry.uuid = data.uuid;
-
-					if ( data.name !== undefined ) geometry.name = data.name;
-
-					geometries[ data.uuid ] = geometry;
-
-				}
-
-			}
-
-			return geometries;
-
-		},
-
-		parseMaterials: function ( json, textures ) {
-
-			var materials = {};
-
-			if ( json !== undefined ) {
-
-				var loader = new MaterialLoader();
-				loader.setTextures( textures );
-
-				for ( var i = 0, l = json.length; i < l; i ++ ) {
-
-					var data = json[ i ];
-
-					if ( data.type === 'MultiMaterial' ) {
-
-						// Deprecated
-
-						var array = [];
-
-						for ( var j = 0; j < data.materials.length; j ++ ) {
-
-							array.push( loader.parse( data.materials[ j ] ) );
-
-						}
-
-						materials[ data.uuid ] = array;
-
-					} else {
-
-						materials[ data.uuid ] = loader.parse( data );
-
-					}
-
-				}
-
-			}
-
-			return materials;
-
-		},
-
-		parseAnimations: function ( json ) {
-
-			var animations = [];
-
-			for ( var i = 0; i < json.length; i ++ ) {
-
-				var clip = AnimationClip.parse( json[ i ] );
-
-				animations.push( clip );
-
-			}
-
-			return animations;
-
-		},
-
-		parseImages: function ( json, onLoad ) {
-
-			var scope = this;
-			var images = {};
-
-			function loadImage( url ) {
-
-				scope.manager.itemStart( url );
-
-				return loader.load( url, function () {
-
-					scope.manager.itemEnd( url );
-
-				}, undefined, function () {
-
-					scope.manager.itemEnd( url );
-					scope.manager.itemError( url );
-
-				} );
-
-			}
-
-			if ( json !== undefined && json.length > 0 ) {
-
-				var manager = new LoadingManager( onLoad );
-
-				var loader = new ImageLoader( manager );
-				loader.setCrossOrigin( this.crossOrigin );
-
-				for ( var i = 0, l = json.length; i < l; i ++ ) {
-
-					var image = json[ i ];
-					var path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( image.url ) ? image.url : scope.texturePath + image.url;
-
-					images[ image.uuid ] = loadImage( path );
-
-				}
-
-			}
-
-			return images;
-
-		},
-
-		parseTextures: function ( json, images ) {
-
-			function parseConstant( value, type ) {
-
-				if ( typeof value === 'number' ) return value;
-
-				console.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );
-
-				return type[ value ];
-
-			}
-
-			var textures = {};
-
-			if ( json !== undefined ) {
-
-				for ( var i = 0, l = json.length; i < l; i ++ ) {
-
-					var data = json[ i ];
-
-					if ( data.image === undefined ) {
-
-						console.warn( 'THREE.ObjectLoader: No "image" specified for', data.uuid );
-
-					}
-
-					if ( images[ data.image ] === undefined ) {
-
-						console.warn( 'THREE.ObjectLoader: Undefined image', data.image );
-
-					}
-
-					var texture = new Texture( images[ data.image ] );
-					texture.needsUpdate = true;
-
-					texture.uuid = data.uuid;
-
-					if ( data.name !== undefined ) texture.name = data.name;
-
-					if ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping, TEXTURE_MAPPING );
-
-					if ( data.offset !== undefined ) texture.offset.fromArray( data.offset );
-					if ( data.repeat !== undefined ) texture.repeat.fromArray( data.repeat );
-					if ( data.center !== undefined ) texture.center.fromArray( data.center );
-					if ( data.rotation !== undefined ) texture.rotation = data.rotation;
-
-					if ( data.wrap !== undefined ) {
-
-						texture.wrapS = parseConstant( data.wrap[ 0 ], TEXTURE_WRAPPING );
-						texture.wrapT = parseConstant( data.wrap[ 1 ], TEXTURE_WRAPPING );
-
-					}
-
-					if ( data.format !== undefined ) texture.format = data.format;
-
-					if ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter, TEXTURE_FILTER );
-					if ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter, TEXTURE_FILTER );
-					if ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;
-
-					if ( data.flipY !== undefined ) texture.flipY = data.flipY;
-
-					textures[ data.uuid ] = texture;
-
-				}
-
-			}
-
-			return textures;
-
-		},
-
-		parseObject: function ( data, geometries, materials ) {
-
-			var object;
-
-			function getGeometry( name ) {
-
-				if ( geometries[ name ] === undefined ) {
-
-					console.warn( 'THREE.ObjectLoader: Undefined geometry', name );
-
-				}
-
-				return geometries[ name ];
-
-			}
-
-			function getMaterial( name ) {
-
-				if ( name === undefined ) return undefined;
-
-				if ( Array.isArray( name ) ) {
-
-					var array = [];
-
-					for ( var i = 0, l = name.length; i < l; i ++ ) {
-
-						var uuid = name[ i ];
-
-						if ( materials[ uuid ] === undefined ) {
-
-							console.warn( 'THREE.ObjectLoader: Undefined material', uuid );
-
-						}
-
-						array.push( materials[ uuid ] );
-
-					}
-
-					return array;
-
-				}
-
-				if ( materials[ name ] === undefined ) {
-
-					console.warn( 'THREE.ObjectLoader: Undefined material', name );
-
-				}
-
-				return materials[ name ];
-
-			}
-
-			switch ( data.type ) {
-
-				case 'Scene':
-
-					object = new Scene();
-
-					if ( data.background !== undefined ) {
-
-						if ( Number.isInteger( data.background ) ) {
-
-							object.background = new Color( data.background );
-
-						}
-
-					}
-
-					if ( data.fog !== undefined ) {
-
-						if ( data.fog.type === 'Fog' ) {
-
-							object.fog = new Fog( data.fog.color, data.fog.near, data.fog.far );
-
-						} else if ( data.fog.type === 'FogExp2' ) {
-
-							object.fog = new FogExp2( data.fog.color, data.fog.density );
-
-						}
-
-					}
-
-					break;
-
-				case 'PerspectiveCamera':
-
-					object = new PerspectiveCamera( data.fov, data.aspect, data.near, data.far );
-
-					if ( data.focus !== undefined ) object.focus = data.focus;
-					if ( data.zoom !== undefined ) object.zoom = data.zoom;
-					if ( data.filmGauge !== undefined ) object.filmGauge = data.filmGauge;
-					if ( data.filmOffset !== undefined ) object.filmOffset = data.filmOffset;
-					if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );
-
-					break;
-
-				case 'OrthographicCamera':
-
-					object = new OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );
-
-					if ( data.zoom !== undefined ) object.zoom = data.zoom;
-					if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );
-
-					break;
-
-				case 'AmbientLight':
-
-					object = new AmbientLight( data.color, data.intensity );
-
-					break;
-
-				case 'DirectionalLight':
-
-					object = new DirectionalLight( data.color, data.intensity );
-
-					break;
-
-				case 'PointLight':
-
-					object = new PointLight( data.color, data.intensity, data.distance, data.decay );
-
-					break;
-
-				case 'RectAreaLight':
-
-					object = new RectAreaLight( data.color, data.intensity, data.width, data.height );
-
-					break;
-
-				case 'SpotLight':
-
-					object = new SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );
-
-					break;
-
-				case 'HemisphereLight':
-
-					object = new HemisphereLight( data.color, data.groundColor, data.intensity );
-
-					break;
-
-				case 'SkinnedMesh':
-
-					console.warn( 'THREE.ObjectLoader.parseObject() does not support SkinnedMesh yet.' );
-
-				case 'Mesh':
-
-					var geometry = getGeometry( data.geometry );
-					var material = getMaterial( data.material );
-
-					if ( geometry.bones && geometry.bones.length > 0 ) {
-
-						object = new SkinnedMesh( geometry, material );
-
-					} else {
-
-						object = new Mesh( geometry, material );
-
-					}
-
-					break;
-
-				case 'LOD':
-
-					object = new LOD();
-
-					break;
-
-				case 'Line':
-
-					object = new Line( getGeometry( data.geometry ), getMaterial( data.material ), data.mode );
-
-					break;
-
-				case 'LineLoop':
-
-					object = new LineLoop( getGeometry( data.geometry ), getMaterial( data.material ) );
-
-					break;
-
-				case 'LineSegments':
-
-					object = new LineSegments( getGeometry( data.geometry ), getMaterial( data.material ) );
-
-					break;
-
-				case 'PointCloud':
-				case 'Points':
-
-					object = new Points( getGeometry( data.geometry ), getMaterial( data.material ) );
-
-					break;
-
-				case 'Sprite':
-
-					object = new Sprite( getMaterial( data.material ) );
-
-					break;
-
-				case 'Group':
-
-					object = new Group();
-
-					break;
-
-				default:
-
-					object = new Object3D();
-
-			}
-
-			object.uuid = data.uuid;
-
-			if ( data.name !== undefined ) object.name = data.name;
-			if ( data.matrix !== undefined ) {
-
-				object.matrix.fromArray( data.matrix );
-				object.matrix.decompose( object.position, object.quaternion, object.scale );
-
-			} else {
-
-				if ( data.position !== undefined ) object.position.fromArray( data.position );
-				if ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );
-				if ( data.quaternion !== undefined ) object.quaternion.fromArray( data.quaternion );
-				if ( data.scale !== undefined ) object.scale.fromArray( data.scale );
-
-			}
-
-			if ( data.castShadow !== undefined ) object.castShadow = data.castShadow;
-			if ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;
-
-			if ( data.shadow ) {
-
-				if ( data.shadow.bias !== undefined ) object.shadow.bias = data.shadow.bias;
-				if ( data.shadow.radius !== undefined ) object.shadow.radius = data.shadow.radius;
-				if ( data.shadow.mapSize !== undefined ) object.shadow.mapSize.fromArray( data.shadow.mapSize );
-				if ( data.shadow.camera !== undefined ) object.shadow.camera = this.parseObject( data.shadow.camera );
-
-			}
-
-			if ( data.visible !== undefined ) object.visible = data.visible;
-			if ( data.frustumCulled !== undefined ) object.frustumCulled = data.frustumCulled;
-			if ( data.renderOrder !== undefined ) object.renderOrder = data.renderOrder;
-			if ( data.userData !== undefined ) object.userData = data.userData;
-
-			if ( data.children !== undefined ) {
-
-				var children = data.children;
-
-				for ( var i = 0; i < children.length; i ++ ) {
-
-					object.add( this.parseObject( children[ i ], geometries, materials ) );
-
-				}
-
-			}
-
-			if ( data.type === 'LOD' ) {
-
-				var levels = data.levels;
-
-				for ( var l = 0; l < levels.length; l ++ ) {
-
-					var level = levels[ l ];
-					var child = object.getObjectByProperty( 'uuid', level.object );
-
-					if ( child !== undefined ) {
-
-						object.addLevel( child, level.distance );
-
-					}
-
-				}
-
-			}
-
-			return object;
-
-		}
-
-	} );
-
-	var TEXTURE_MAPPING = {
-		UVMapping: UVMapping,
-		CubeReflectionMapping: CubeReflectionMapping,
-		CubeRefractionMapping: CubeRefractionMapping,
-		EquirectangularReflectionMapping: EquirectangularReflectionMapping,
-		EquirectangularRefractionMapping: EquirectangularRefractionMapping,
-		SphericalReflectionMapping: SphericalReflectionMapping,
-		CubeUVReflectionMapping: CubeUVReflectionMapping,
-		CubeUVRefractionMapping: CubeUVRefractionMapping
-	};
-
-	var TEXTURE_WRAPPING = {
-		RepeatWrapping: RepeatWrapping,
-		ClampToEdgeWrapping: ClampToEdgeWrapping,
-		MirroredRepeatWrapping: MirroredRepeatWrapping
-	};
-
-	var TEXTURE_FILTER = {
-		NearestFilter: NearestFilter,
-		NearestMipMapNearestFilter: NearestMipMapNearestFilter,
-		NearestMipMapLinearFilter: NearestMipMapLinearFilter,
-		LinearFilter: LinearFilter,
-		LinearMipMapNearestFilter: LinearMipMapNearestFilter,
-		LinearMipMapLinearFilter: LinearMipMapLinearFilter
-	};
-
-	/**
-	 * @author thespite / http://clicktorelease.com/
-	 */
-
-	function ImageBitmapLoader( manager ) {
-
-		if ( typeof createImageBitmap === 'undefined' ) {
-
-			console.warn( 'THREE.ImageBitmapLoader: createImageBitmap() not supported.' );
-
-		}
-
-		if ( typeof fetch === 'undefined' ) {
-
-			console.warn( 'THREE.ImageBitmapLoader: fetch() not supported.' );
-
-		}
-
-		this.manager = manager !== undefined ? manager : DefaultLoadingManager;
-		this.options = undefined;
-
-	}
-
-	ImageBitmapLoader.prototype = {
-
-		constructor: ImageBitmapLoader,
-
-		setOptions: function setOptions( options ) {
-
-			this.options = options;
-
-			return this;
-
-		},
-
-		load: function load( url, onLoad, onProgress, onError ) {
-
-			if ( url === undefined ) url = '';
-
-			if ( this.path !== undefined ) url = this.path + url;
-
-			var scope = this;
-
-			var cached = Cache.get( url );
-
-			if ( cached !== undefined ) {
-
-				scope.manager.itemStart( url );
-
-				setTimeout( function () {
-
-					if ( onLoad ) onLoad( cached );
-
-					scope.manager.itemEnd( url );
-
-				}, 0 );
-
-				return cached;
-
-			}
-
-			fetch( url ).then( function ( res ) {
-
-				return res.blob();
-
-			} ).then( function ( blob ) {
-
-				return createImageBitmap( blob, scope.options );
-
-			} ).then( function ( imageBitmap ) {
-
-				Cache.add( url, imageBitmap );
-
-				if ( onLoad ) onLoad( imageBitmap );
-
-				scope.manager.itemEnd( url );
-
-			} ).catch( function ( e ) {
-
-				if ( onError ) onError( e );
-
-				scope.manager.itemEnd( url );
-				scope.manager.itemError( url );
-
-			} );
-
-		},
-
-		setCrossOrigin: function ( /* value */ ) {
-
-			return this;
-
-		},
-
-		setPath: function ( value ) {
-
-			this.path = value;
-			return this;
-
-		}
-
-	};
-
-	/**
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 * minimal class for proxing functions to Path. Replaces old "extractSubpaths()"
-	 **/
-
-	function ShapePath() {
-
-		this.type = 'ShapePath';
-
-		this.subPaths = [];
-		this.currentPath = null;
-
-	}
-
-	Object.assign( ShapePath.prototype, {
-
-		moveTo: function ( x, y ) {
-
-			this.currentPath = new Path();
-			this.subPaths.push( this.currentPath );
-			this.currentPath.moveTo( x, y );
-
-		},
-
-		lineTo: function ( x, y ) {
-
-			this.currentPath.lineTo( x, y );
-
-		},
-
-		quadraticCurveTo: function ( aCPx, aCPy, aX, aY ) {
-
-			this.currentPath.quadraticCurveTo( aCPx, aCPy, aX, aY );
-
-		},
-
-		bezierCurveTo: function ( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {
-
-			this.currentPath.bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY );
-
-		},
-
-		splineThru: function ( pts ) {
-
-			this.currentPath.splineThru( pts );
-
-		},
-
-		toShapes: function ( isCCW, noHoles ) {
-
-			function toShapesNoHoles( inSubpaths ) {
-
-				var shapes = [];
-
-				for ( var i = 0, l = inSubpaths.length; i < l; i ++ ) {
-
-					var tmpPath = inSubpaths[ i ];
-
-					var tmpShape = new Shape();
-					tmpShape.curves = tmpPath.curves;
-
-					shapes.push( tmpShape );
-
-				}
-
-				return shapes;
-
-			}
-
-			function isPointInsidePolygon( inPt, inPolygon ) {
-
-				var polyLen = inPolygon.length;
-
-				// inPt on polygon contour => immediate success    or
-				// toggling of inside/outside at every single! intersection point of an edge
-				//  with the horizontal line through inPt, left of inPt
-				//  not counting lowerY endpoints of edges and whole edges on that line
-				var inside = false;
-				for ( var p = polyLen - 1, q = 0; q < polyLen; p = q ++ ) {
-
-					var edgeLowPt = inPolygon[ p ];
-					var edgeHighPt = inPolygon[ q ];
-
-					var edgeDx = edgeHighPt.x - edgeLowPt.x;
-					var edgeDy = edgeHighPt.y - edgeLowPt.y;
-
-					if ( Math.abs( edgeDy ) > Number.EPSILON ) {
-
-						// not parallel
-						if ( edgeDy < 0 ) {
-
-							edgeLowPt = inPolygon[ q ]; edgeDx = - edgeDx;
-							edgeHighPt = inPolygon[ p ]; edgeDy = - edgeDy;
-
-						}
-						if ( ( inPt.y < edgeLowPt.y ) || ( inPt.y > edgeHighPt.y ) ) 		continue;
-
-						if ( inPt.y === edgeLowPt.y ) {
-
-							if ( inPt.x === edgeLowPt.x )		return	true;		// inPt is on contour ?
-							// continue;				// no intersection or edgeLowPt => doesn't count !!!
-
-						} else {
-
-							var perpEdge = edgeDy * ( inPt.x - edgeLowPt.x ) - edgeDx * ( inPt.y - edgeLowPt.y );
-							if ( perpEdge === 0 )				return	true;		// inPt is on contour ?
-							if ( perpEdge < 0 ) 				continue;
-							inside = ! inside;		// true intersection left of inPt
-
-						}
-
-					} else {
-
-						// parallel or collinear
-						if ( inPt.y !== edgeLowPt.y ) 		continue;			// parallel
-						// edge lies on the same horizontal line as inPt
-						if ( ( ( edgeHighPt.x <= inPt.x ) && ( inPt.x <= edgeLowPt.x ) ) ||
-							 ( ( edgeLowPt.x <= inPt.x ) && ( inPt.x <= edgeHighPt.x ) ) )		return	true;	// inPt: Point on contour !
-						// continue;
-
-					}
-
-				}
-
-				return	inside;
-
-			}
-
-			var isClockWise = ShapeUtils.isClockWise;
-
-			var subPaths = this.subPaths;
-			if ( subPaths.length === 0 ) return [];
-
-			if ( noHoles === true )	return	toShapesNoHoles( subPaths );
-
-
-			var solid, tmpPath, tmpShape, shapes = [];
-
-			if ( subPaths.length === 1 ) {
-
-				tmpPath = subPaths[ 0 ];
-				tmpShape = new Shape();
-				tmpShape.curves = tmpPath.curves;
-				shapes.push( tmpShape );
-				return shapes;
-
-			}
-
-			var holesFirst = ! isClockWise( subPaths[ 0 ].getPoints() );
-			holesFirst = isCCW ? ! holesFirst : holesFirst;
-
-			// console.log("Holes first", holesFirst);
-
-			var betterShapeHoles = [];
-			var newShapes = [];
-			var newShapeHoles = [];
-			var mainIdx = 0;
-			var tmpPoints;
-
-			newShapes[ mainIdx ] = undefined;
-			newShapeHoles[ mainIdx ] = [];
-
-			for ( var i = 0, l = subPaths.length; i < l; i ++ ) {
-
-				tmpPath = subPaths[ i ];
-				tmpPoints = tmpPath.getPoints();
-				solid = isClockWise( tmpPoints );
-				solid = isCCW ? ! solid : solid;
-
-				if ( solid ) {
-
-					if ( ( ! holesFirst ) && ( newShapes[ mainIdx ] ) )	mainIdx ++;
-
-					newShapes[ mainIdx ] = { s: new Shape(), p: tmpPoints };
-					newShapes[ mainIdx ].s.curves = tmpPath.curves;
-
-					if ( holesFirst )	mainIdx ++;
-					newShapeHoles[ mainIdx ] = [];
-
-					//console.log('cw', i);
-
-				} else {
-
-					newShapeHoles[ mainIdx ].push( { h: tmpPath, p: tmpPoints[ 0 ] } );
-
-					//console.log('ccw', i);
-
-				}
-
-			}
-
-			// only Holes? -> probably all Shapes with wrong orientation
-			if ( ! newShapes[ 0 ] )	return	toShapesNoHoles( subPaths );
-
-
-			if ( newShapes.length > 1 ) {
-
-				var ambiguous = false;
-				var toChange = [];
-
-				for ( var sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {
-
-					betterShapeHoles[ sIdx ] = [];
-
-				}
-
-				for ( var sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {
-
-					var sho = newShapeHoles[ sIdx ];
-
-					for ( var hIdx = 0; hIdx < sho.length; hIdx ++ ) {
-
-						var ho = sho[ hIdx ];
-						var hole_unassigned = true;
-
-						for ( var s2Idx = 0; s2Idx < newShapes.length; s2Idx ++ ) {
-
-							if ( isPointInsidePolygon( ho.p, newShapes[ s2Idx ].p ) ) {
-
-								if ( sIdx !== s2Idx )	toChange.push( { froms: sIdx, tos: s2Idx, hole: hIdx } );
-								if ( hole_unassigned ) {
-
-									hole_unassigned = false;
-									betterShapeHoles[ s2Idx ].push( ho );
-
-								} else {
-
-									ambiguous = true;
-
-								}
-
-							}
-
-						}
-						if ( hole_unassigned ) {
-
-							betterShapeHoles[ sIdx ].push( ho );
-
-						}
-
-					}
-
-				}
-				// console.log("ambiguous: ", ambiguous);
-				if ( toChange.length > 0 ) {
-
-					// console.log("to change: ", toChange);
-					if ( ! ambiguous )	newShapeHoles = betterShapeHoles;
-
-				}
-
-			}
-
-			var tmpHoles;
-
-			for ( var i = 0, il = newShapes.length; i < il; i ++ ) {
-
-				tmpShape = newShapes[ i ].s;
-				shapes.push( tmpShape );
-				tmpHoles = newShapeHoles[ i ];
-
-				for ( var j = 0, jl = tmpHoles.length; j < jl; j ++ ) {
-
-					tmpShape.holes.push( tmpHoles[ j ].h );
-
-				}
-
-			}
-
-			//console.log("shape", shapes);
-
-			return shapes;
-
-		}
-
-	} );
-
-	/**
-	 * @author zz85 / http://www.lab4games.net/zz85/blog
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function Font( data ) {
-
-		this.type = 'Font';
-
-		this.data = data;
-
-	}
-
-	Object.assign( Font.prototype, {
-
-		isFont: true,
-
-		generateShapes: function ( text, size, divisions ) {
-
-			if ( size === undefined ) size = 100;
-			if ( divisions === undefined ) divisions = 4;
-
-			var shapes = [];
-			var paths = createPaths( text, size, divisions, this.data );
-
-			for ( var p = 0, pl = paths.length; p < pl; p ++ ) {
-
-				Array.prototype.push.apply( shapes, paths[ p ].toShapes() );
-
-			}
-
-			return shapes;
-
-		}
-
-	} );
-
-	function createPaths( text, size, divisions, data ) {
-
-		var chars = String( text ).split( '' );
-		var scale = size / data.resolution;
-		var line_height = ( data.boundingBox.yMax - data.boundingBox.yMin + data.underlineThickness ) * scale;
-
-		var paths = [];
-
-		var offsetX = 0, offsetY = 0;
-
-		for ( var i = 0; i < chars.length; i ++ ) {
-
-			var char = chars[ i ];
-
-			if ( char === '\n' ) {
-
-				offsetX = 0;
-				offsetY -= line_height;
-
-			} else {
-
-				var ret = createPath( char, divisions, scale, offsetX, offsetY, data );
-				offsetX += ret.offsetX;
-				paths.push( ret.path );
-
-			}
-
-		}
-
-		return paths;
-
-	}
-
-	function createPath( char, divisions, scale, offsetX, offsetY, data ) {
-
-		var glyph = data.glyphs[ char ] || data.glyphs[ '?' ];
-
-		if ( ! glyph ) return;
-
-		var path = new ShapePath();
-
-		var x, y, cpx, cpy, cpx1, cpy1, cpx2, cpy2;
-
-		if ( glyph.o ) {
-
-			var outline = glyph._cachedOutline || ( glyph._cachedOutline = glyph.o.split( ' ' ) );
-
-			for ( var i = 0, l = outline.length; i < l; ) {
-
-				var action = outline[ i ++ ];
-
-				switch ( action ) {
-
-					case 'm': // moveTo
-
-						x = outline[ i ++ ] * scale + offsetX;
-						y = outline[ i ++ ] * scale + offsetY;
-
-						path.moveTo( x, y );
-
-						break;
-
-					case 'l': // lineTo
-
-						x = outline[ i ++ ] * scale + offsetX;
-						y = outline[ i ++ ] * scale + offsetY;
-
-						path.lineTo( x, y );
-
-						break;
-
-					case 'q': // quadraticCurveTo
-
-						cpx = outline[ i ++ ] * scale + offsetX;
-						cpy = outline[ i ++ ] * scale + offsetY;
-						cpx1 = outline[ i ++ ] * scale + offsetX;
-						cpy1 = outline[ i ++ ] * scale + offsetY;
-
-						path.quadraticCurveTo( cpx1, cpy1, cpx, cpy );
-
-						break;
-
-					case 'b': // bezierCurveTo
-
-						cpx = outline[ i ++ ] * scale + offsetX;
-						cpy = outline[ i ++ ] * scale + offsetY;
-						cpx1 = outline[ i ++ ] * scale + offsetX;
-						cpy1 = outline[ i ++ ] * scale + offsetY;
-						cpx2 = outline[ i ++ ] * scale + offsetX;
-						cpy2 = outline[ i ++ ] * scale + offsetY;
-
-						path.bezierCurveTo( cpx1, cpy1, cpx2, cpy2, cpx, cpy );
-
-						break;
-
-				}
-
-			}
-
-		}
-
-		return { offsetX: glyph.ha * scale, path: path };
-
-	}
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function FontLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-
-	}
-
-	Object.assign( FontLoader.prototype, {
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			var scope = this;
-
-			var loader = new FileLoader( this.manager );
-			loader.setPath( this.path );
-			loader.load( url, function ( text ) {
-
-				var json;
-
-				try {
-
-					json = JSON.parse( text );
-
-				} catch ( e ) {
-
-					console.warn( 'THREE.FontLoader: typeface.js support is being deprecated. Use typeface.json instead.' );
-					json = JSON.parse( text.substring( 65, text.length - 2 ) );
-
-				}
-
-				var font = scope.parse( json );
-
-				if ( onLoad ) onLoad( font );
-
-			}, onProgress, onError );
-
-		},
-
-		parse: function ( json ) {
-
-			return new Font( json );
-
-		},
-
-		setPath: function ( value ) {
-
-			this.path = value;
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	var context;
-
-	var AudioContext = {
-
-		getContext: function () {
-
-			if ( context === undefined ) {
-
-				context = new ( window.AudioContext || window.webkitAudioContext )();
-
-			}
-
-			return context;
-
-		},
-
-		setContext: function ( value ) {
-
-			context = value;
-
-		}
-
-	};
-
-	/**
-	 * @author Reece Aaron Lecrivain / http://reecenotes.com/
-	 */
-
-	function AudioLoader( manager ) {
-
-		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
-
-	}
-
-	Object.assign( AudioLoader.prototype, {
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			var loader = new FileLoader( this.manager );
-			loader.setResponseType( 'arraybuffer' );
-			loader.load( url, function ( buffer ) {
-
-				var context = AudioContext.getContext();
-
-				context.decodeAudioData( buffer, function ( audioBuffer ) {
-
-					onLoad( audioBuffer );
-
-				} );
-
-			}, onProgress, onError );
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function StereoCamera() {
-
-		this.type = 'StereoCamera';
-
-		this.aspect = 1;
-
-		this.eyeSep = 0.064;
-
-		this.cameraL = new PerspectiveCamera();
-		this.cameraL.layers.enable( 1 );
-		this.cameraL.matrixAutoUpdate = false;
-
-		this.cameraR = new PerspectiveCamera();
-		this.cameraR.layers.enable( 2 );
-		this.cameraR.matrixAutoUpdate = false;
-
-	}
-
-	Object.assign( StereoCamera.prototype, {
-
-		update: ( function () {
-
-			var instance, focus, fov, aspect, near, far, zoom, eyeSep;
-
-			var eyeRight = new Matrix4();
-			var eyeLeft = new Matrix4();
-
-			return function update( camera ) {
-
-				var needsUpdate = instance !== this || focus !== camera.focus || fov !== camera.fov ||
-													aspect !== camera.aspect * this.aspect || near !== camera.near ||
-													far !== camera.far || zoom !== camera.zoom || eyeSep !== this.eyeSep;
-
-				if ( needsUpdate ) {
-
-					instance = this;
-					focus = camera.focus;
-					fov = camera.fov;
-					aspect = camera.aspect * this.aspect;
-					near = camera.near;
-					far = camera.far;
-					zoom = camera.zoom;
-
-					// Off-axis stereoscopic effect based on
-					// http://paulbourke.net/stereographics/stereorender/
-
-					var projectionMatrix = camera.projectionMatrix.clone();
-					eyeSep = this.eyeSep / 2;
-					var eyeSepOnProjection = eyeSep * near / focus;
-					var ymax = ( near * Math.tan( _Math.DEG2RAD * fov * 0.5 ) ) / zoom;
-					var xmin, xmax;
-
-					// translate xOffset
-
-					eyeLeft.elements[ 12 ] = - eyeSep;
-					eyeRight.elements[ 12 ] = eyeSep;
-
-					// for left eye
-
-					xmin = - ymax * aspect + eyeSepOnProjection;
-					xmax = ymax * aspect + eyeSepOnProjection;
-
-					projectionMatrix.elements[ 0 ] = 2 * near / ( xmax - xmin );
-					projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
-
-					this.cameraL.projectionMatrix.copy( projectionMatrix );
-
-					// for right eye
-
-					xmin = - ymax * aspect - eyeSepOnProjection;
-					xmax = ymax * aspect - eyeSepOnProjection;
-
-					projectionMatrix.elements[ 0 ] = 2 * near / ( xmax - xmin );
-					projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
-
-					this.cameraR.projectionMatrix.copy( projectionMatrix );
-
-				}
-
-				this.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( eyeLeft );
-				this.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( eyeRight );
-
-			};
-
-		} )()
-
-	} );
-
-	/**
-	 * Camera for rendering cube maps
-	 *	- renders scene into axis-aligned cube
-	 *
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function CubeCamera( near, far, cubeResolution ) {
-
-		Object3D.call( this );
-
-		this.type = 'CubeCamera';
-
-		var fov = 90, aspect = 1;
-
-		var cameraPX = new PerspectiveCamera( fov, aspect, near, far );
-		cameraPX.up.set( 0, - 1, 0 );
-		cameraPX.lookAt( new Vector3( 1, 0, 0 ) );
-		this.add( cameraPX );
-
-		var cameraNX = new PerspectiveCamera( fov, aspect, near, far );
-		cameraNX.up.set( 0, - 1, 0 );
-		cameraNX.lookAt( new Vector3( - 1, 0, 0 ) );
-		this.add( cameraNX );
-
-		var cameraPY = new PerspectiveCamera( fov, aspect, near, far );
-		cameraPY.up.set( 0, 0, 1 );
-		cameraPY.lookAt( new Vector3( 0, 1, 0 ) );
-		this.add( cameraPY );
-
-		var cameraNY = new PerspectiveCamera( fov, aspect, near, far );
-		cameraNY.up.set( 0, 0, - 1 );
-		cameraNY.lookAt( new Vector3( 0, - 1, 0 ) );
-		this.add( cameraNY );
-
-		var cameraPZ = new PerspectiveCamera( fov, aspect, near, far );
-		cameraPZ.up.set( 0, - 1, 0 );
-		cameraPZ.lookAt( new Vector3( 0, 0, 1 ) );
-		this.add( cameraPZ );
-
-		var cameraNZ = new PerspectiveCamera( fov, aspect, near, far );
-		cameraNZ.up.set( 0, - 1, 0 );
-		cameraNZ.lookAt( new Vector3( 0, 0, - 1 ) );
-		this.add( cameraNZ );
-
-		var options = { format: RGBFormat, magFilter: LinearFilter, minFilter: LinearFilter };
-
-		this.renderTarget = new WebGLRenderTargetCube( cubeResolution, cubeResolution, options );
-		this.renderTarget.texture.name = "CubeCamera";
-
-		this.update = function ( renderer, scene ) {
-
-			if ( this.parent === null ) this.updateMatrixWorld();
-
-			var renderTarget = this.renderTarget;
-			var generateMipmaps = renderTarget.texture.generateMipmaps;
-
-			renderTarget.texture.generateMipmaps = false;
-
-			renderTarget.activeCubeFace = 0;
-			renderer.render( scene, cameraPX, renderTarget );
-
-			renderTarget.activeCubeFace = 1;
-			renderer.render( scene, cameraNX, renderTarget );
-
-			renderTarget.activeCubeFace = 2;
-			renderer.render( scene, cameraPY, renderTarget );
-
-			renderTarget.activeCubeFace = 3;
-			renderer.render( scene, cameraNY, renderTarget );
-
-			renderTarget.activeCubeFace = 4;
-			renderer.render( scene, cameraPZ, renderTarget );
-
-			renderTarget.texture.generateMipmaps = generateMipmaps;
-
-			renderTarget.activeCubeFace = 5;
-			renderer.render( scene, cameraNZ, renderTarget );
-
-			renderer.setRenderTarget( null );
-
-		};
-
-		this.clear = function ( renderer, color, depth, stencil ) {
-
-			var renderTarget = this.renderTarget;
-
-			for ( var i = 0; i < 6; i ++ ) {
-
-				renderTarget.activeCubeFace = i;
-				renderer.setRenderTarget( renderTarget );
-
-				renderer.clear( color, depth, stencil );
-
-			}
-
-			renderer.setRenderTarget( null );
-
-		};
-
-	}
-
-	CubeCamera.prototype = Object.create( Object3D.prototype );
-	CubeCamera.prototype.constructor = CubeCamera;
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function AudioListener() {
-
-		Object3D.call( this );
-
-		this.type = 'AudioListener';
-
-		this.context = AudioContext.getContext();
-
-		this.gain = this.context.createGain();
-		this.gain.connect( this.context.destination );
-
-		this.filter = null;
-
-	}
-
-	AudioListener.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: AudioListener,
-
-		getInput: function () {
-
-			return this.gain;
-
-		},
-
-		removeFilter: function ( ) {
-
-			if ( this.filter !== null ) {
-
-				this.gain.disconnect( this.filter );
-				this.filter.disconnect( this.context.destination );
-				this.gain.connect( this.context.destination );
-				this.filter = null;
-
-			}
-
-		},
-
-		getFilter: function () {
-
-			return this.filter;
-
-		},
-
-		setFilter: function ( value ) {
-
-			if ( this.filter !== null ) {
-
-				this.gain.disconnect( this.filter );
-				this.filter.disconnect( this.context.destination );
-
-			} else {
-
-				this.gain.disconnect( this.context.destination );
-
-			}
-
-			this.filter = value;
-			this.gain.connect( this.filter );
-			this.filter.connect( this.context.destination );
-
-		},
-
-		getMasterVolume: function () {
-
-			return this.gain.gain.value;
-
-		},
-
-		setMasterVolume: function ( value ) {
-
-			this.gain.gain.value = value;
-
-		},
-
-		updateMatrixWorld: ( function () {
-
-			var position = new Vector3();
-			var quaternion = new Quaternion();
-			var scale = new Vector3();
-
-			var orientation = new Vector3();
-
-			return function updateMatrixWorld( force ) {
-
-				Object3D.prototype.updateMatrixWorld.call( this, force );
-
-				var listener = this.context.listener;
-				var up = this.up;
-
-				this.matrixWorld.decompose( position, quaternion, scale );
-
-				orientation.set( 0, 0, - 1 ).applyQuaternion( quaternion );
-
-				if ( listener.positionX ) {
-
-					listener.positionX.setValueAtTime( position.x, this.context.currentTime );
-					listener.positionY.setValueAtTime( position.y, this.context.currentTime );
-					listener.positionZ.setValueAtTime( position.z, this.context.currentTime );
-					listener.forwardX.setValueAtTime( orientation.x, this.context.currentTime );
-					listener.forwardY.setValueAtTime( orientation.y, this.context.currentTime );
-					listener.forwardZ.setValueAtTime( orientation.z, this.context.currentTime );
-					listener.upX.setValueAtTime( up.x, this.context.currentTime );
-					listener.upY.setValueAtTime( up.y, this.context.currentTime );
-					listener.upZ.setValueAtTime( up.z, this.context.currentTime );
-
-				} else {
-
-					listener.setPosition( position.x, position.y, position.z );
-					listener.setOrientation( orientation.x, orientation.y, orientation.z, up.x, up.y, up.z );
-
-				}
-
-			};
-
-		} )()
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author Reece Aaron Lecrivain / http://reecenotes.com/
-	 */
-
-	function Audio( listener ) {
-
-		Object3D.call( this );
-
-		this.type = 'Audio';
-
-		this.context = listener.context;
-
-		this.gain = this.context.createGain();
-		this.gain.connect( listener.getInput() );
-
-		this.autoplay = false;
-
-		this.buffer = null;
-		this.loop = false;
-		this.startTime = 0;
-		this.offset = 0;
-		this.playbackRate = 1;
-		this.isPlaying = false;
-		this.hasPlaybackControl = true;
-		this.sourceType = 'empty';
-
-		this.filters = [];
-
-	}
-
-	Audio.prototype = Object.assign( Object.create( Object3D.prototype ), {
-
-		constructor: Audio,
-
-		getOutput: function () {
-
-			return this.gain;
-
-		},
-
-		setNodeSource: function ( audioNode ) {
-
-			this.hasPlaybackControl = false;
-			this.sourceType = 'audioNode';
-			this.source = audioNode;
-			this.connect();
-
-			return this;
-
-		},
-
-		setBuffer: function ( audioBuffer ) {
-
-			this.buffer = audioBuffer;
-			this.sourceType = 'buffer';
-
-			if ( this.autoplay ) this.play();
-
-			return this;
-
-		},
-
-		play: function () {
-
-			if ( this.isPlaying === true ) {
-
-				console.warn( 'THREE.Audio: Audio is already playing.' );
-				return;
-
-			}
-
-			if ( this.hasPlaybackControl === false ) {
-
-				console.warn( 'THREE.Audio: this Audio has no playback control.' );
-				return;
-
-			}
-
-			var source = this.context.createBufferSource();
-
-			source.buffer = this.buffer;
-			source.loop = this.loop;
-			source.onended = this.onEnded.bind( this );
-			source.playbackRate.setValueAtTime( this.playbackRate, this.startTime );
-			this.startTime = this.context.currentTime;
-			source.start( this.startTime, this.offset );
-
-			this.isPlaying = true;
-
-			this.source = source;
-
-			return this.connect();
-
-		},
-
-		pause: function () {
-
-			if ( this.hasPlaybackControl === false ) {
-
-				console.warn( 'THREE.Audio: this Audio has no playback control.' );
-				return;
-
-			}
-
-			if ( this.isPlaying === true ) {
-
-				this.source.stop();
-				this.offset += ( this.context.currentTime - this.startTime ) * this.playbackRate;
-				this.isPlaying = false;
-
-			}
-
-			return this;
-
-		},
-
-		stop: function () {
-
-			if ( this.hasPlaybackControl === false ) {
-
-				console.warn( 'THREE.Audio: this Audio has no playback control.' );
-				return;
-
-			}
-
-			this.source.stop();
-			this.offset = 0;
-			this.isPlaying = false;
-
-			return this;
-
-		},
-
-		connect: function () {
-
-			if ( this.filters.length > 0 ) {
-
-				this.source.connect( this.filters[ 0 ] );
-
-				for ( var i = 1, l = this.filters.length; i < l; i ++ ) {
-
-					this.filters[ i - 1 ].connect( this.filters[ i ] );
-
-				}
-
-				this.filters[ this.filters.length - 1 ].connect( this.getOutput() );
-
-			} else {
-
-				this.source.connect( this.getOutput() );
-
-			}
-
-			return this;
-
-		},
-
-		disconnect: function () {
-
-			if ( this.filters.length > 0 ) {
-
-				this.source.disconnect( this.filters[ 0 ] );
-
-				for ( var i = 1, l = this.filters.length; i < l; i ++ ) {
-
-					this.filters[ i - 1 ].disconnect( this.filters[ i ] );
-
-				}
-
-				this.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );
-
-			} else {
-
-				this.source.disconnect( this.getOutput() );
-
-			}
-
-			return this;
-
-		},
-
-		getFilters: function () {
-
-			return this.filters;
-
-		},
-
-		setFilters: function ( value ) {
-
-			if ( ! value ) value = [];
-
-			if ( this.isPlaying === true ) {
-
-				this.disconnect();
-				this.filters = value;
-				this.connect();
-
-			} else {
-
-				this.filters = value;
-
-			}
-
-			return this;
-
-		},
-
-		getFilter: function () {
-
-			return this.getFilters()[ 0 ];
-
-		},
-
-		setFilter: function ( filter ) {
-
-			return this.setFilters( filter ? [ filter ] : [] );
-
-		},
-
-		setPlaybackRate: function ( value ) {
-
-			if ( this.hasPlaybackControl === false ) {
-
-				console.warn( 'THREE.Audio: this Audio has no playback control.' );
-				return;
-
-			}
-
-			this.playbackRate = value;
-
-			if ( this.isPlaying === true ) {
-
-				this.source.playbackRate.setValueAtTime( this.playbackRate, this.context.currentTime );
-
-			}
-
-			return this;
-
-		},
-
-		getPlaybackRate: function () {
-
-			return this.playbackRate;
-
-		},
-
-		onEnded: function () {
-
-			this.isPlaying = false;
-
-		},
-
-		getLoop: function () {
-
-			if ( this.hasPlaybackControl === false ) {
-
-				console.warn( 'THREE.Audio: this Audio has no playback control.' );
-				return false;
-
-			}
-
-			return this.loop;
-
-		},
-
-		setLoop: function ( value ) {
-
-			if ( this.hasPlaybackControl === false ) {
-
-				console.warn( 'THREE.Audio: this Audio has no playback control.' );
-				return;
-
-			}
-
-			this.loop = value;
-
-			if ( this.isPlaying === true ) {
-
-				this.source.loop = this.loop;
-
-			}
-
-			return this;
-
-		},
-
-		getVolume: function () {
-
-			return this.gain.gain.value;
-
-		},
-
-		setVolume: function ( value ) {
-
-			this.gain.gain.value = value;
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function PositionalAudio( listener ) {
-
-		Audio.call( this, listener );
-
-		this.panner = this.context.createPanner();
-		this.panner.connect( this.gain );
-
-	}
-
-	PositionalAudio.prototype = Object.assign( Object.create( Audio.prototype ), {
-
-		constructor: PositionalAudio,
-
-		getOutput: function () {
-
-			return this.panner;
-
-		},
-
-		getRefDistance: function () {
-
-			return this.panner.refDistance;
-
-		},
-
-		setRefDistance: function ( value ) {
-
-			this.panner.refDistance = value;
-
-		},
-
-		getRolloffFactor: function () {
-
-			return this.panner.rolloffFactor;
-
-		},
-
-		setRolloffFactor: function ( value ) {
-
-			this.panner.rolloffFactor = value;
-
-		},
-
-		getDistanceModel: function () {
-
-			return this.panner.distanceModel;
-
-		},
-
-		setDistanceModel: function ( value ) {
-
-			this.panner.distanceModel = value;
-
-		},
-
-		getMaxDistance: function () {
-
-			return this.panner.maxDistance;
-
-		},
-
-		setMaxDistance: function ( value ) {
-
-			this.panner.maxDistance = value;
-
-		},
-
-		updateMatrixWorld: ( function () {
-
-			var position = new Vector3();
-
-			return function updateMatrixWorld( force ) {
-
-				Object3D.prototype.updateMatrixWorld.call( this, force );
-
-				position.setFromMatrixPosition( this.matrixWorld );
-
-				this.panner.setPosition( position.x, position.y, position.z );
-
-			};
-
-		} )()
-
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function AudioAnalyser( audio, fftSize ) {
-
-		this.analyser = audio.context.createAnalyser();
-		this.analyser.fftSize = fftSize !== undefined ? fftSize : 2048;
-
-		this.data = new Uint8Array( this.analyser.frequencyBinCount );
-
-		audio.getOutput().connect( this.analyser );
-
-	}
-
-	Object.assign( AudioAnalyser.prototype, {
-
-		getFrequencyData: function () {
-
-			this.analyser.getByteFrequencyData( this.data );
-
-			return this.data;
-
-		},
-
-		getAverageFrequency: function () {
-
-			var value = 0, data = this.getFrequencyData();
-
-			for ( var i = 0; i < data.length; i ++ ) {
-
-				value += data[ i ];
-
-			}
-
-			return value / data.length;
-
-		}
-
-	} );
-
-	/**
-	 *
-	 * Buffered scene graph property that allows weighted accumulation.
-	 *
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 */
-
-	function PropertyMixer( binding, typeName, valueSize ) {
-
-		this.binding = binding;
-		this.valueSize = valueSize;
-
-		var bufferType = Float64Array,
-			mixFunction;
-
-		switch ( typeName ) {
-
-			case 'quaternion':
-				mixFunction = this._slerp;
-				break;
-
-			case 'string':
-			case 'bool':
-				bufferType = Array;
-				mixFunction = this._select;
-				break;
-
-			default:
-				mixFunction = this._lerp;
-
-		}
-
-		this.buffer = new bufferType( valueSize * 4 );
-		// layout: [ incoming | accu0 | accu1 | orig ]
-		//
-		// interpolators can use .buffer as their .result
-		// the data then goes to 'incoming'
-		//
-		// 'accu0' and 'accu1' are used frame-interleaved for
-		// the cumulative result and are compared to detect
-		// changes
-		//
-		// 'orig' stores the original state of the property
-
-		this._mixBufferRegion = mixFunction;
-
-		this.cumulativeWeight = 0;
-
-		this.useCount = 0;
-		this.referenceCount = 0;
-
-	}
-
-	Object.assign( PropertyMixer.prototype, {
-
-		// accumulate data in the 'incoming' region into 'accu<i>'
-		accumulate: function ( accuIndex, weight ) {
-
-			// note: happily accumulating nothing when weight = 0, the caller knows
-			// the weight and shouldn't have made the call in the first place
-
-			var buffer = this.buffer,
-				stride = this.valueSize,
-				offset = accuIndex * stride + stride,
-
-				currentWeight = this.cumulativeWeight;
-
-			if ( currentWeight === 0 ) {
-
-				// accuN := incoming * weight
-
-				for ( var i = 0; i !== stride; ++ i ) {
-
-					buffer[ offset + i ] = buffer[ i ];
-
-				}
-
-				currentWeight = weight;
-
-			} else {
-
-				// accuN := accuN + incoming * weight
-
-				currentWeight += weight;
-				var mix = weight / currentWeight;
-				this._mixBufferRegion( buffer, offset, 0, mix, stride );
-
-			}
-
-			this.cumulativeWeight = currentWeight;
-
-		},
-
-		// apply the state of 'accu<i>' to the binding when accus differ
-		apply: function ( accuIndex ) {
-
-			var stride = this.valueSize,
-				buffer = this.buffer,
-				offset = accuIndex * stride + stride,
-
-				weight = this.cumulativeWeight,
-
-				binding = this.binding;
-
-			this.cumulativeWeight = 0;
-
-			if ( weight < 1 ) {
-
-				// accuN := accuN + original * ( 1 - cumulativeWeight )
-
-				var originalValueOffset = stride * 3;
-
-				this._mixBufferRegion(
-					buffer, offset, originalValueOffset, 1 - weight, stride );
-
-			}
-
-			for ( var i = stride, e = stride + stride; i !== e; ++ i ) {
-
-				if ( buffer[ i ] !== buffer[ i + stride ] ) {
-
-					// value has changed -> update scene graph
-
-					binding.setValue( buffer, offset );
-					break;
-
-				}
-
-			}
-
-		},
-
-		// remember the state of the bound property and copy it to both accus
-		saveOriginalState: function () {
-
-			var binding = this.binding;
-
-			var buffer = this.buffer,
-				stride = this.valueSize,
-
-				originalValueOffset = stride * 3;
-
-			binding.getValue( buffer, originalValueOffset );
-
-			// accu[0..1] := orig -- initially detect changes against the original
-			for ( var i = stride, e = originalValueOffset; i !== e; ++ i ) {
-
-				buffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];
-
-			}
-
-			this.cumulativeWeight = 0;
-
-		},
-
-		// apply the state previously taken via 'saveOriginalState' to the binding
-		restoreOriginalState: function () {
-
-			var originalValueOffset = this.valueSize * 3;
-			this.binding.setValue( this.buffer, originalValueOffset );
-
-		},
-
-
-		// mix functions
-
-		_select: function ( buffer, dstOffset, srcOffset, t, stride ) {
-
-			if ( t >= 0.5 ) {
-
-				for ( var i = 0; i !== stride; ++ i ) {
-
-					buffer[ dstOffset + i ] = buffer[ srcOffset + i ];
-
-				}
-
-			}
-
-		},
-
-		_slerp: function ( buffer, dstOffset, srcOffset, t ) {
-
-			Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t );
-
-		},
-
-		_lerp: function ( buffer, dstOffset, srcOffset, t, stride ) {
-
-			var s = 1 - t;
-
-			for ( var i = 0; i !== stride; ++ i ) {
-
-				var j = dstOffset + i;
-
-				buffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;
-
-			}
-
-		}
-
-	} );
-
-	/**
-	 *
-	 * A reference to a real property in the scene graph.
-	 *
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 */
-
-	// Characters [].:/ are reserved for track binding syntax.
-	var RESERVED_CHARS_RE = '\\[\\]\\.:\\/';
-
-	function Composite( targetGroup, path, optionalParsedPath ) {
-
-		var parsedPath = optionalParsedPath || PropertyBinding.parseTrackName( path );
-
-		this._targetGroup = targetGroup;
-		this._bindings = targetGroup.subscribe_( path, parsedPath );
-
-	}
-
-	Object.assign( Composite.prototype, {
-
-		getValue: function ( array, offset ) {
-
-			this.bind(); // bind all binding
-
-			var firstValidIndex = this._targetGroup.nCachedObjects_,
-				binding = this._bindings[ firstValidIndex ];
-
-			// and only call .getValue on the first
-			if ( binding !== undefined ) binding.getValue( array, offset );
-
-		},
-
-		setValue: function ( array, offset ) {
-
-			var bindings = this._bindings;
-
-			for ( var i = this._targetGroup.nCachedObjects_,
-					  n = bindings.length; i !== n; ++ i ) {
-
-				bindings[ i ].setValue( array, offset );
-
-			}
-
-		},
-
-		bind: function () {
-
-			var bindings = this._bindings;
-
-			for ( var i = this._targetGroup.nCachedObjects_,
-					  n = bindings.length; i !== n; ++ i ) {
-
-				bindings[ i ].bind();
-
-			}
-
-		},
-
-		unbind: function () {
-
-			var bindings = this._bindings;
-
-			for ( var i = this._targetGroup.nCachedObjects_,
-					  n = bindings.length; i !== n; ++ i ) {
-
-				bindings[ i ].unbind();
-
-			}
-
-		}
-
-	} );
-
-
-	function PropertyBinding( rootNode, path, parsedPath ) {
-
-		this.path = path;
-		this.parsedPath = parsedPath || PropertyBinding.parseTrackName( path );
-
-		this.node = PropertyBinding.findNode( rootNode, this.parsedPath.nodeName ) || rootNode;
-
-		this.rootNode = rootNode;
-
-	}
-
-	Object.assign( PropertyBinding, {
-
-		Composite: Composite,
-
-		create: function ( root, path, parsedPath ) {
-
-			if ( ! ( root && root.isAnimationObjectGroup ) ) {
-
-				return new PropertyBinding( root, path, parsedPath );
-
-			} else {
-
-				return new PropertyBinding.Composite( root, path, parsedPath );
-
-			}
-
-		},
-
-		/**
-		 * Replaces spaces with underscores and removes unsupported characters from
-		 * node names, to ensure compatibility with parseTrackName().
-		 *
-		 * @param  {string} name Node name to be sanitized.
-		 * @return {string}
-		 */
-		sanitizeNodeName: ( function () {
-
-			var reservedRe = new RegExp( '[' + RESERVED_CHARS_RE + ']', 'g' );
-
-			return function sanitizeNodeName( name ) {
-
-				return name.replace( /\s/g, '_' ).replace( reservedRe, '' );
-
-			};
-
-		}() ),
-
-		parseTrackName: function () {
-
-			// Attempts to allow node names from any language. ES5's `\w` regexp matches
-			// only latin characters, and the unicode \p{L} is not yet supported. So
-			// instead, we exclude reserved characters and match everything else.
-			var wordChar = '[^' + RESERVED_CHARS_RE + ']';
-			var wordCharOrDot = '[^' + RESERVED_CHARS_RE.replace( '\\.', '' ) + ']';
-
-			// Parent directories, delimited by '/' or ':'. Currently unused, but must
-			// be matched to parse the rest of the track name.
-			var directoryRe = /((?:WC+[\/:])*)/.source.replace( 'WC', wordChar );
-
-			// Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.
-			var nodeRe = /(WCOD+)?/.source.replace( 'WCOD', wordCharOrDot );
-
-			// Object on target node, and accessor. May not contain reserved
-			// characters. Accessor may contain any character except closing bracket.
-			var objectRe = /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace( 'WC', wordChar );
-
-			// Property and accessor. May not contain reserved characters. Accessor may
-			// contain any non-bracket characters.
-			var propertyRe = /\.(WC+)(?:\[(.+)\])?/.source.replace( 'WC', wordChar );
-
-			var trackRe = new RegExp( ''
-				+ '^'
-				+ directoryRe
-				+ nodeRe
-				+ objectRe
-				+ propertyRe
-				+ '$'
-			);
-
-			var supportedObjectNames = [ 'material', 'materials', 'bones' ];
-
-			return function parseTrackName( trackName ) {
-
-				var matches = trackRe.exec( trackName );
-
-				if ( ! matches ) {
-
-					throw new Error( 'PropertyBinding: Cannot parse trackName: ' + trackName );
-
-				}
-
-				var results = {
-					// directoryName: matches[ 1 ], // (tschw) currently unused
-					nodeName: matches[ 2 ],
-					objectName: matches[ 3 ],
-					objectIndex: matches[ 4 ],
-					propertyName: matches[ 5 ], // required
-					propertyIndex: matches[ 6 ]
-				};
-
-				var lastDot = results.nodeName && results.nodeName.lastIndexOf( '.' );
-
-				if ( lastDot !== undefined && lastDot !== - 1 ) {
-
-					var objectName = results.nodeName.substring( lastDot + 1 );
-
-					// Object names must be checked against a whitelist. Otherwise, there
-					// is no way to parse 'foo.bar.baz': 'baz' must be a property, but
-					// 'bar' could be the objectName, or part of a nodeName (which can
-					// include '.' characters).
-					if ( supportedObjectNames.indexOf( objectName ) !== - 1 ) {
-
-						results.nodeName = results.nodeName.substring( 0, lastDot );
-						results.objectName = objectName;
-
-					}
-
-				}
-
-				if ( results.propertyName === null || results.propertyName.length === 0 ) {
-
-					throw new Error( 'PropertyBinding: can not parse propertyName from trackName: ' + trackName );
-
-				}
-
-				return results;
-
-			};
-
-		}(),
-
-		findNode: function ( root, nodeName ) {
-
-			if ( ! nodeName || nodeName === "" || nodeName === "root" || nodeName === "." || nodeName === - 1 || nodeName === root.name || nodeName === root.uuid ) {
-
-				return root;
-
-			}
-
-			// search into skeleton bones.
-			if ( root.skeleton ) {
-
-				var bone = root.skeleton.getBoneByName( nodeName );
-
-				if ( bone !== undefined ) {
-
-					return bone;
-
-				}
-
-			}
-
-			// search into node subtree.
-			if ( root.children ) {
-
-				var searchNodeSubtree = function ( children ) {
-
-					for ( var i = 0; i < children.length; i ++ ) {
-
-						var childNode = children[ i ];
-
-						if ( childNode.name === nodeName || childNode.uuid === nodeName ) {
-
-							return childNode;
-
-						}
-
-						var result = searchNodeSubtree( childNode.children );
-
-						if ( result ) return result;
-
-					}
-
-					return null;
-
-				};
-
-				var subTreeNode = searchNodeSubtree( root.children );
-
-				if ( subTreeNode ) {
-
-					return subTreeNode;
-
-				}
-
-			}
-
-			return null;
-
-		}
-
-	} );
-
-	Object.assign( PropertyBinding.prototype, { // prototype, continued
-
-		// these are used to "bind" a nonexistent property
-		_getValue_unavailable: function () {},
-		_setValue_unavailable: function () {},
-
-		BindingType: {
-			Direct: 0,
-			EntireArray: 1,
-			ArrayElement: 2,
-			HasFromToArray: 3
-		},
-
-		Versioning: {
-			None: 0,
-			NeedsUpdate: 1,
-			MatrixWorldNeedsUpdate: 2
-		},
-
-		GetterByBindingType: [
-
-			function getValue_direct( buffer, offset ) {
-
-				buffer[ offset ] = this.node[ this.propertyName ];
-
-			},
-
-			function getValue_array( buffer, offset ) {
-
-				var source = this.resolvedProperty;
-
-				for ( var i = 0, n = source.length; i !== n; ++ i ) {
-
-					buffer[ offset ++ ] = source[ i ];
-
-				}
-
-			},
-
-			function getValue_arrayElement( buffer, offset ) {
-
-				buffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];
-
-			},
-
-			function getValue_toArray( buffer, offset ) {
-
-				this.resolvedProperty.toArray( buffer, offset );
-
-			}
-
-		],
-
-		SetterByBindingTypeAndVersioning: [
-
-			[
-				// Direct
-
-				function setValue_direct( buffer, offset ) {
-
-					this.targetObject[ this.propertyName ] = buffer[ offset ];
-
-				},
-
-				function setValue_direct_setNeedsUpdate( buffer, offset ) {
-
-					this.targetObject[ this.propertyName ] = buffer[ offset ];
-					this.targetObject.needsUpdate = true;
-
-				},
-
-				function setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {
-
-					this.targetObject[ this.propertyName ] = buffer[ offset ];
-					this.targetObject.matrixWorldNeedsUpdate = true;
-
-				}
-
-			], [
-
-				// EntireArray
-
-				function setValue_array( buffer, offset ) {
-
-					var dest = this.resolvedProperty;
-
-					for ( var i = 0, n = dest.length; i !== n; ++ i ) {
-
-						dest[ i ] = buffer[ offset ++ ];
-
-					}
-
-				},
-
-				function setValue_array_setNeedsUpdate( buffer, offset ) {
-
-					var dest = this.resolvedProperty;
-
-					for ( var i = 0, n = dest.length; i !== n; ++ i ) {
-
-						dest[ i ] = buffer[ offset ++ ];
-
-					}
-
-					this.targetObject.needsUpdate = true;
-
-				},
-
-				function setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {
-
-					var dest = this.resolvedProperty;
-
-					for ( var i = 0, n = dest.length; i !== n; ++ i ) {
-
-						dest[ i ] = buffer[ offset ++ ];
-
-					}
-
-					this.targetObject.matrixWorldNeedsUpdate = true;
-
-				}
-
-			], [
-
-				// ArrayElement
-
-				function setValue_arrayElement( buffer, offset ) {
-
-					this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
-
-				},
-
-				function setValue_arrayElement_setNeedsUpdate( buffer, offset ) {
-
-					this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
-					this.targetObject.needsUpdate = true;
-
-				},
-
-				function setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {
-
-					this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
-					this.targetObject.matrixWorldNeedsUpdate = true;
-
-				}
-
-			], [
-
-				// HasToFromArray
-
-				function setValue_fromArray( buffer, offset ) {
-
-					this.resolvedProperty.fromArray( buffer, offset );
-
-				},
-
-				function setValue_fromArray_setNeedsUpdate( buffer, offset ) {
-
-					this.resolvedProperty.fromArray( buffer, offset );
-					this.targetObject.needsUpdate = true;
-
-				},
-
-				function setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {
-
-					this.resolvedProperty.fromArray( buffer, offset );
-					this.targetObject.matrixWorldNeedsUpdate = true;
-
-				}
-
-			]
-
-		],
-
-		getValue: function getValue_unbound( targetArray, offset ) {
-
-			this.bind();
-			this.getValue( targetArray, offset );
-
-			// Note: This class uses a State pattern on a per-method basis:
-			// 'bind' sets 'this.getValue' / 'setValue' and shadows the
-			// prototype version of these methods with one that represents
-			// the bound state. When the property is not found, the methods
-			// become no-ops.
-
-		},
-
-		setValue: function getValue_unbound( sourceArray, offset ) {
-
-			this.bind();
-			this.setValue( sourceArray, offset );
-
-		},
-
-		// create getter / setter pair for a property in the scene graph
-		bind: function () {
-
-			var targetObject = this.node,
-				parsedPath = this.parsedPath,
-
-				objectName = parsedPath.objectName,
-				propertyName = parsedPath.propertyName,
-				propertyIndex = parsedPath.propertyIndex;
-
-			if ( ! targetObject ) {
-
-				targetObject = PropertyBinding.findNode( this.rootNode, parsedPath.nodeName ) || this.rootNode;
-
-				this.node = targetObject;
-
-			}
-
-			// set fail state so we can just 'return' on error
-			this.getValue = this._getValue_unavailable;
-			this.setValue = this._setValue_unavailable;
-
-			// ensure there is a value node
-			if ( ! targetObject ) {
-
-				console.error( 'THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\'t found.' );
-				return;
-
-			}
-
-			if ( objectName ) {
-
-				var objectIndex = parsedPath.objectIndex;
-
-				// special cases were we need to reach deeper into the hierarchy to get the face materials....
-				switch ( objectName ) {
-
-					case 'materials':
-
-						if ( ! targetObject.material ) {
-
-							console.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );
-							return;
-
-						}
-
-						if ( ! targetObject.material.materials ) {
-
-							console.error( 'THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this );
-							return;
-
-						}
-
-						targetObject = targetObject.material.materials;
-
-						break;
-
-					case 'bones':
-
-						if ( ! targetObject.skeleton ) {
-
-							console.error( 'THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this );
-							return;
-
-						}
-
-						// potential future optimization: skip this if propertyIndex is already an integer
-						// and convert the integer string to a true integer.
-
-						targetObject = targetObject.skeleton.bones;
-
-						// support resolving morphTarget names into indices.
-						for ( var i = 0; i < targetObject.length; i ++ ) {
-
-							if ( targetObject[ i ].name === objectIndex ) {
-
-								objectIndex = i;
-								break;
-
-							}
-
-						}
-
-						break;
-
-					default:
-
-						if ( targetObject[ objectName ] === undefined ) {
-
-							console.error( 'THREE.PropertyBinding: Can not bind to objectName of node undefined.', this );
-							return;
-
-						}
-
-						targetObject = targetObject[ objectName ];
-
-				}
-
-
-				if ( objectIndex !== undefined ) {
-
-					if ( targetObject[ objectIndex ] === undefined ) {
-
-						console.error( 'THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject );
-						return;
-
-					}
-
-					targetObject = targetObject[ objectIndex ];
-
-				}
-
-			}
-
-			// resolve property
-			var nodeProperty = targetObject[ propertyName ];
-
-			if ( nodeProperty === undefined ) {
-
-				var nodeName = parsedPath.nodeName;
-
-				console.error( 'THREE.PropertyBinding: Trying to update property for track: ' + nodeName +
-					'.' + propertyName + ' but it wasn\'t found.', targetObject );
-				return;
-
-			}
-
-			// determine versioning scheme
-			var versioning = this.Versioning.None;
-
-			if ( targetObject.needsUpdate !== undefined ) { // material
-
-				versioning = this.Versioning.NeedsUpdate;
-				this.targetObject = targetObject;
-
-			} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) { // node transform
-
-				versioning = this.Versioning.MatrixWorldNeedsUpdate;
-				this.targetObject = targetObject;
-
-			}
-
-			// determine how the property gets bound
-			var bindingType = this.BindingType.Direct;
-
-			if ( propertyIndex !== undefined ) {
-
-				// access a sub element of the property array (only primitives are supported right now)
-
-				if ( propertyName === "morphTargetInfluences" ) {
-
-					// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.
-
-					// support resolving morphTarget names into indices.
-					if ( ! targetObject.geometry ) {
-
-						console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this );
-						return;
-
-					}
-
-					if ( targetObject.geometry.isBufferGeometry ) {
-
-						if ( ! targetObject.geometry.morphAttributes ) {
-
-							console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this );
-							return;
-
-						}
-
-						for ( var i = 0; i < this.node.geometry.morphAttributes.position.length; i ++ ) {
-
-							if ( targetObject.geometry.morphAttributes.position[ i ].name === propertyIndex ) {
-
-								propertyIndex = i;
-								break;
-
-							}
-
-						}
-
-
-					} else {
-
-						if ( ! targetObject.geometry.morphTargets ) {
-
-							console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphTargets.', this );
-							return;
-
-						}
-
-						for ( var i = 0; i < this.node.geometry.morphTargets.length; i ++ ) {
-
-							if ( targetObject.geometry.morphTargets[ i ].name === propertyIndex ) {
-
-								propertyIndex = i;
-								break;
-
-							}
-
-						}
-
-					}
-
-				}
-
-				bindingType = this.BindingType.ArrayElement;
-
-				this.resolvedProperty = nodeProperty;
-				this.propertyIndex = propertyIndex;
-
-			} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {
-
-				// must use copy for Object3D.Euler/Quaternion
-
-				bindingType = this.BindingType.HasFromToArray;
-
-				this.resolvedProperty = nodeProperty;
-
-			} else if ( Array.isArray( nodeProperty ) ) {
-
-				bindingType = this.BindingType.EntireArray;
-
-				this.resolvedProperty = nodeProperty;
-
-			} else {
-
-				this.propertyName = propertyName;
-
-			}
-
-			// select getter / setter
-			this.getValue = this.GetterByBindingType[ bindingType ];
-			this.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];
-
-		},
-
-		unbind: function () {
-
-			this.node = null;
-
-			// back to the prototype version of getValue / setValue
-			// note: avoiding to mutate the shape of 'this' via 'delete'
-			this.getValue = this._getValue_unbound;
-			this.setValue = this._setValue_unbound;
-
-		}
-
-	} );
-
-	//!\ DECLARE ALIAS AFTER assign prototype !
-	Object.assign( PropertyBinding.prototype, {
-
-		// initial state of these methods that calls 'bind'
-		_getValue_unbound: PropertyBinding.prototype.getValue,
-		_setValue_unbound: PropertyBinding.prototype.setValue,
-
-	} );
-
-	/**
-	 *
-	 * A group of objects that receives a shared animation state.
-	 *
-	 * Usage:
-	 *
-	 * 	-	Add objects you would otherwise pass as 'root' to the
-	 * 		constructor or the .clipAction method of AnimationMixer.
-	 *
-	 * 	-	Instead pass this object as 'root'.
-	 *
-	 * 	-	You can also add and remove objects later when the mixer
-	 * 		is running.
-	 *
-	 * Note:
-	 *
-	 *  	Objects of this class appear as one object to the mixer,
-	 *  	so cache control of the individual objects must be done
-	 *  	on the group.
-	 *
-	 * Limitation:
-	 *
-	 * 	- 	The animated properties must be compatible among the
-	 * 		all objects in the group.
-	 *
-	 *  -	A single property can either be controlled through a
-	 *  	target group or directly, but not both.
-	 *
-	 * @author tschw
-	 */
-
-	function AnimationObjectGroup() {
-
-		this.uuid = _Math.generateUUID();
-
-		// cached objects followed by the active ones
-		this._objects = Array.prototype.slice.call( arguments );
-
-		this.nCachedObjects_ = 0;			// threshold
-		// note: read by PropertyBinding.Composite
-
-		var indices = {};
-		this._indicesByUUID = indices;		// for bookkeeping
-
-		for ( var i = 0, n = arguments.length; i !== n; ++ i ) {
-
-			indices[ arguments[ i ].uuid ] = i;
-
-		}
-
-		this._paths = [];					// inside: string
-		this._parsedPaths = [];				// inside: { we don't care, here }
-		this._bindings = []; 				// inside: Array< PropertyBinding >
-		this._bindingsIndicesByPath = {}; 	// inside: indices in these arrays
-
-		var scope = this;
-
-		this.stats = {
-
-			objects: {
-				get total() {
-
-					return scope._objects.length;
-
-				},
-				get inUse() {
-
-					return this.total - scope.nCachedObjects_;
-
-				}
-			},
-			get bindingsPerObject() {
-
-				return scope._bindings.length;
-
-			}
-
-		};
-
-	}
-
-	Object.assign( AnimationObjectGroup.prototype, {
-
-		isAnimationObjectGroup: true,
-
-		add: function () {
-
-			var objects = this._objects,
-				nObjects = objects.length,
-				nCachedObjects = this.nCachedObjects_,
-				indicesByUUID = this._indicesByUUID,
-				paths = this._paths,
-				parsedPaths = this._parsedPaths,
-				bindings = this._bindings,
-				nBindings = bindings.length,
-				knownObject = undefined;
-
-			for ( var i = 0, n = arguments.length; i !== n; ++ i ) {
-
-				var object = arguments[ i ],
-					uuid = object.uuid,
-					index = indicesByUUID[ uuid ];
-
-				if ( index === undefined ) {
-
-					// unknown object -> add it to the ACTIVE region
-
-					index = nObjects ++;
-					indicesByUUID[ uuid ] = index;
-					objects.push( object );
-
-					// accounting is done, now do the same for all bindings
-
-					for ( var j = 0, m = nBindings; j !== m; ++ j ) {
-
-						bindings[ j ].push( new PropertyBinding( object, paths[ j ], parsedPaths[ j ] ) );
-
-					}
-
-				} else if ( index < nCachedObjects ) {
-
-					knownObject = objects[ index ];
-
-					// move existing object to the ACTIVE region
-
-					var firstActiveIndex = -- nCachedObjects,
-						lastCachedObject = objects[ firstActiveIndex ];
-
-					indicesByUUID[ lastCachedObject.uuid ] = index;
-					objects[ index ] = lastCachedObject;
-
-					indicesByUUID[ uuid ] = firstActiveIndex;
-					objects[ firstActiveIndex ] = object;
-
-					// accounting is done, now do the same for all bindings
-
-					for ( var j = 0, m = nBindings; j !== m; ++ j ) {
-
-						var bindingsForPath = bindings[ j ],
-							lastCached = bindingsForPath[ firstActiveIndex ],
-							binding = bindingsForPath[ index ];
-
-						bindingsForPath[ index ] = lastCached;
-
-						if ( binding === undefined ) {
-
-							// since we do not bother to create new bindings
-							// for objects that are cached, the binding may
-							// or may not exist
-
-							binding = new PropertyBinding( object, paths[ j ], parsedPaths[ j ] );
-
-						}
-
-						bindingsForPath[ firstActiveIndex ] = binding;
-
-					}
-
-				} else if ( objects[ index ] !== knownObject ) {
-
-					console.error( 'THREE.AnimationObjectGroup: Different objects with the same UUID ' +
-							'detected. Clean the caches or recreate your infrastructure when reloading scenes.' );
-
-				} // else the object is already where we want it to be
-
-			} // for arguments
-
-			this.nCachedObjects_ = nCachedObjects;
-
-		},
-
-		remove: function () {
-
-			var objects = this._objects,
-				nCachedObjects = this.nCachedObjects_,
-				indicesByUUID = this._indicesByUUID,
-				bindings = this._bindings,
-				nBindings = bindings.length;
-
-			for ( var i = 0, n = arguments.length; i !== n; ++ i ) {
-
-				var object = arguments[ i ],
-					uuid = object.uuid,
-					index = indicesByUUID[ uuid ];
-
-				if ( index !== undefined && index >= nCachedObjects ) {
-
-					// move existing object into the CACHED region
-
-					var lastCachedIndex = nCachedObjects ++,
-						firstActiveObject = objects[ lastCachedIndex ];
-
-					indicesByUUID[ firstActiveObject.uuid ] = index;
-					objects[ index ] = firstActiveObject;
-
-					indicesByUUID[ uuid ] = lastCachedIndex;
-					objects[ lastCachedIndex ] = object;
-
-					// accounting is done, now do the same for all bindings
-
-					for ( var j = 0, m = nBindings; j !== m; ++ j ) {
-
-						var bindingsForPath = bindings[ j ],
-							firstActive = bindingsForPath[ lastCachedIndex ],
-							binding = bindingsForPath[ index ];
-
-						bindingsForPath[ index ] = firstActive;
-						bindingsForPath[ lastCachedIndex ] = binding;
-
-					}
-
-				}
-
-			} // for arguments
-
-			this.nCachedObjects_ = nCachedObjects;
-
-		},
-
-		// remove & forget
-		uncache: function () {
-
-			var objects = this._objects,
-				nObjects = objects.length,
-				nCachedObjects = this.nCachedObjects_,
-				indicesByUUID = this._indicesByUUID,
-				bindings = this._bindings,
-				nBindings = bindings.length;
-
-			for ( var i = 0, n = arguments.length; i !== n; ++ i ) {
-
-				var object = arguments[ i ],
-					uuid = object.uuid,
-					index = indicesByUUID[ uuid ];
-
-				if ( index !== undefined ) {
-
-					delete indicesByUUID[ uuid ];
-
-					if ( index < nCachedObjects ) {
-
-						// object is cached, shrink the CACHED region
-
-						var firstActiveIndex = -- nCachedObjects,
-							lastCachedObject = objects[ firstActiveIndex ],
-							lastIndex = -- nObjects,
-							lastObject = objects[ lastIndex ];
-
-						// last cached object takes this object's place
-						indicesByUUID[ lastCachedObject.uuid ] = index;
-						objects[ index ] = lastCachedObject;
-
-						// last object goes to the activated slot and pop
-						indicesByUUID[ lastObject.uuid ] = firstActiveIndex;
-						objects[ firstActiveIndex ] = lastObject;
-						objects.pop();
-
-						// accounting is done, now do the same for all bindings
-
-						for ( var j = 0, m = nBindings; j !== m; ++ j ) {
-
-							var bindingsForPath = bindings[ j ],
-								lastCached = bindingsForPath[ firstActiveIndex ],
-								last = bindingsForPath[ lastIndex ];
-
-							bindingsForPath[ index ] = lastCached;
-							bindingsForPath[ firstActiveIndex ] = last;
-							bindingsForPath.pop();
-
-						}
-
-					} else {
-
-						// object is active, just swap with the last and pop
-
-						var lastIndex = -- nObjects,
-							lastObject = objects[ lastIndex ];
-
-						indicesByUUID[ lastObject.uuid ] = index;
-						objects[ index ] = lastObject;
-						objects.pop();
-
-						// accounting is done, now do the same for all bindings
-
-						for ( var j = 0, m = nBindings; j !== m; ++ j ) {
-
-							var bindingsForPath = bindings[ j ];
-
-							bindingsForPath[ index ] = bindingsForPath[ lastIndex ];
-							bindingsForPath.pop();
-
-						}
-
-					} // cached or active
-
-				} // if object is known
-
-			} // for arguments
-
-			this.nCachedObjects_ = nCachedObjects;
-
-		},
-
-		// Internal interface used by befriended PropertyBinding.Composite:
-
-		subscribe_: function ( path, parsedPath ) {
-
-			// returns an array of bindings for the given path that is changed
-			// according to the contained objects in the group
-
-			var indicesByPath = this._bindingsIndicesByPath,
-				index = indicesByPath[ path ],
-				bindings = this._bindings;
-
-			if ( index !== undefined ) return bindings[ index ];
-
-			var paths = this._paths,
-				parsedPaths = this._parsedPaths,
-				objects = this._objects,
-				nObjects = objects.length,
-				nCachedObjects = this.nCachedObjects_,
-				bindingsForPath = new Array( nObjects );
-
-			index = bindings.length;
-
-			indicesByPath[ path ] = index;
-
-			paths.push( path );
-			parsedPaths.push( parsedPath );
-			bindings.push( bindingsForPath );
-
-			for ( var i = nCachedObjects, n = objects.length; i !== n; ++ i ) {
-
-				var object = objects[ i ];
-				bindingsForPath[ i ] = new PropertyBinding( object, path, parsedPath );
-
-			}
-
-			return bindingsForPath;
-
-		},
-
-		unsubscribe_: function ( path ) {
-
-			// tells the group to forget about a property path and no longer
-			// update the array previously obtained with 'subscribe_'
-
-			var indicesByPath = this._bindingsIndicesByPath,
-				index = indicesByPath[ path ];
-
-			if ( index !== undefined ) {
-
-				var paths = this._paths,
-					parsedPaths = this._parsedPaths,
-					bindings = this._bindings,
-					lastBindingsIndex = bindings.length - 1,
-					lastBindings = bindings[ lastBindingsIndex ],
-					lastBindingsPath = path[ lastBindingsIndex ];
-
-				indicesByPath[ lastBindingsPath ] = index;
-
-				bindings[ index ] = lastBindings;
-				bindings.pop();
-
-				parsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];
-				parsedPaths.pop();
-
-				paths[ index ] = paths[ lastBindingsIndex ];
-				paths.pop();
-
-			}
-
-		}
-
-	} );
-
-	/**
-	 *
-	 * Action provided by AnimationMixer for scheduling clip playback on specific
-	 * objects.
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 *
-	 */
-
-	function AnimationAction( mixer, clip, localRoot ) {
-
-		this._mixer = mixer;
-		this._clip = clip;
-		this._localRoot = localRoot || null;
-
-		var tracks = clip.tracks,
-			nTracks = tracks.length,
-			interpolants = new Array( nTracks );
-
-		var interpolantSettings = {
-			endingStart: ZeroCurvatureEnding,
-			endingEnd: ZeroCurvatureEnding
-		};
-
-		for ( var i = 0; i !== nTracks; ++ i ) {
-
-			var interpolant = tracks[ i ].createInterpolant( null );
-			interpolants[ i ] = interpolant;
-			interpolant.settings = interpolantSettings;
-
-		}
-
-		this._interpolantSettings = interpolantSettings;
-
-		this._interpolants = interpolants;	// bound by the mixer
-
-		// inside: PropertyMixer (managed by the mixer)
-		this._propertyBindings = new Array( nTracks );
-
-		this._cacheIndex = null;			// for the memory manager
-		this._byClipCacheIndex = null;		// for the memory manager
-
-		this._timeScaleInterpolant = null;
-		this._weightInterpolant = null;
-
-		this.loop = LoopRepeat;
-		this._loopCount = - 1;
-
-		// global mixer time when the action is to be started
-		// it's set back to 'null' upon start of the action
-		this._startTime = null;
-
-		// scaled local time of the action
-		// gets clamped or wrapped to 0..clip.duration according to loop
-		this.time = 0;
-
-		this.timeScale = 1;
-		this._effectiveTimeScale = 1;
-
-		this.weight = 1;
-		this._effectiveWeight = 1;
-
-		this.repetitions = Infinity; 		// no. of repetitions when looping
-
-		this.paused = false;				// true -> zero effective time scale
-		this.enabled = true;				// false -> zero effective weight
-
-		this.clampWhenFinished 	= false;	// keep feeding the last frame?
-
-		this.zeroSlopeAtStart 	= true;		// for smooth interpolation w/o separate
-		this.zeroSlopeAtEnd		= true;		// clips for start, loop and end
-
-	}
-
-	Object.assign( AnimationAction.prototype, {
-
-		// State & Scheduling
-
-		play: function () {
-
-			this._mixer._activateAction( this );
-
-			return this;
-
-		},
-
-		stop: function () {
-
-			this._mixer._deactivateAction( this );
-
-			return this.reset();
-
-		},
-
-		reset: function () {
-
-			this.paused = false;
-			this.enabled = true;
-
-			this.time = 0;			// restart clip
-			this._loopCount = - 1;	// forget previous loops
-			this._startTime = null;	// forget scheduling
-
-			return this.stopFading().stopWarping();
-
-		},
-
-		isRunning: function () {
-
-			return this.enabled && ! this.paused && this.timeScale !== 0 &&
-					this._startTime === null && this._mixer._isActiveAction( this );
-
-		},
-
-		// return true when play has been called
-		isScheduled: function () {
-
-			return this._mixer._isActiveAction( this );
-
-		},
-
-		startAt: function ( time ) {
-
-			this._startTime = time;
-
-			return this;
-
-		},
-
-		setLoop: function ( mode, repetitions ) {
-
-			this.loop = mode;
-			this.repetitions = repetitions;
-
-			return this;
-
-		},
-
-		// Weight
-
-		// set the weight stopping any scheduled fading
-		// although .enabled = false yields an effective weight of zero, this
-		// method does *not* change .enabled, because it would be confusing
-		setEffectiveWeight: function ( weight ) {
-
-			this.weight = weight;
-
-			// note: same logic as when updated at runtime
-			this._effectiveWeight = this.enabled ? weight : 0;
-
-			return this.stopFading();
-
-		},
-
-		// return the weight considering fading and .enabled
-		getEffectiveWeight: function () {
-
-			return this._effectiveWeight;
-
-		},
-
-		fadeIn: function ( duration ) {
-
-			return this._scheduleFading( duration, 0, 1 );
-
-		},
-
-		fadeOut: function ( duration ) {
-
-			return this._scheduleFading( duration, 1, 0 );
-
-		},
-
-		crossFadeFrom: function ( fadeOutAction, duration, warp ) {
-
-			fadeOutAction.fadeOut( duration );
-			this.fadeIn( duration );
-
-			if ( warp ) {
-
-				var fadeInDuration = this._clip.duration,
-					fadeOutDuration = fadeOutAction._clip.duration,
-
-					startEndRatio = fadeOutDuration / fadeInDuration,
-					endStartRatio = fadeInDuration / fadeOutDuration;
-
-				fadeOutAction.warp( 1.0, startEndRatio, duration );
-				this.warp( endStartRatio, 1.0, duration );
-
-			}
-
-			return this;
-
-		},
-
-		crossFadeTo: function ( fadeInAction, duration, warp ) {
-
-			return fadeInAction.crossFadeFrom( this, duration, warp );
-
-		},
-
-		stopFading: function () {
-
-			var weightInterpolant = this._weightInterpolant;
-
-			if ( weightInterpolant !== null ) {
-
-				this._weightInterpolant = null;
-				this._mixer._takeBackControlInterpolant( weightInterpolant );
-
-			}
-
-			return this;
-
-		},
-
-		// Time Scale Control
-
-		// set the time scale stopping any scheduled warping
-		// although .paused = true yields an effective time scale of zero, this
-		// method does *not* change .paused, because it would be confusing
-		setEffectiveTimeScale: function ( timeScale ) {
-
-			this.timeScale = timeScale;
-			this._effectiveTimeScale = this.paused ? 0 : timeScale;
-
-			return this.stopWarping();
-
-		},
-
-		// return the time scale considering warping and .paused
-		getEffectiveTimeScale: function () {
-
-			return this._effectiveTimeScale;
-
-		},
-
-		setDuration: function ( duration ) {
-
-			this.timeScale = this._clip.duration / duration;
-
-			return this.stopWarping();
-
-		},
-
-		syncWith: function ( action ) {
-
-			this.time = action.time;
-			this.timeScale = action.timeScale;
-
-			return this.stopWarping();
-
-		},
-
-		halt: function ( duration ) {
-
-			return this.warp( this._effectiveTimeScale, 0, duration );
-
-		},
-
-		warp: function ( startTimeScale, endTimeScale, duration ) {
-
-			var mixer = this._mixer, now = mixer.time,
-				interpolant = this._timeScaleInterpolant,
-
-				timeScale = this.timeScale;
-
-			if ( interpolant === null ) {
-
-				interpolant = mixer._lendControlInterpolant();
-				this._timeScaleInterpolant = interpolant;
-
-			}
-
-			var times = interpolant.parameterPositions,
-				values = interpolant.sampleValues;
-
-			times[ 0 ] = now;
-			times[ 1 ] = now + duration;
-
-			values[ 0 ] = startTimeScale / timeScale;
-			values[ 1 ] = endTimeScale / timeScale;
-
-			return this;
-
-		},
-
-		stopWarping: function () {
-
-			var timeScaleInterpolant = this._timeScaleInterpolant;
-
-			if ( timeScaleInterpolant !== null ) {
-
-				this._timeScaleInterpolant = null;
-				this._mixer._takeBackControlInterpolant( timeScaleInterpolant );
-
-			}
-
-			return this;
-
-		},
-
-		// Object Accessors
-
-		getMixer: function () {
-
-			return this._mixer;
-
-		},
-
-		getClip: function () {
-
-			return this._clip;
-
-		},
-
-		getRoot: function () {
-
-			return this._localRoot || this._mixer._root;
-
-		},
-
-		// Interna
-
-		_update: function ( time, deltaTime, timeDirection, accuIndex ) {
-
-			// called by the mixer
-
-			if ( ! this.enabled ) {
-
-				// call ._updateWeight() to update ._effectiveWeight
-
-				this._updateWeight( time );
-				return;
-
-			}
-
-			var startTime = this._startTime;
-
-			if ( startTime !== null ) {
-
-				// check for scheduled start of action
-
-				var timeRunning = ( time - startTime ) * timeDirection;
-				if ( timeRunning < 0 || timeDirection === 0 ) {
-
-					return; // yet to come / don't decide when delta = 0
-
-				}
-
-				// start
-
-				this._startTime = null; // unschedule
-				deltaTime = timeDirection * timeRunning;
-
-			}
-
-			// apply time scale and advance time
-
-			deltaTime *= this._updateTimeScale( time );
-			var clipTime = this._updateTime( deltaTime );
-
-			// note: _updateTime may disable the action resulting in
-			// an effective weight of 0
-
-			var weight = this._updateWeight( time );
-
-			if ( weight > 0 ) {
-
-				var interpolants = this._interpolants;
-				var propertyMixers = this._propertyBindings;
-
-				for ( var j = 0, m = interpolants.length; j !== m; ++ j ) {
-
-					interpolants[ j ].evaluate( clipTime );
-					propertyMixers[ j ].accumulate( accuIndex, weight );
-
-				}
-
-			}
-
-		},
-
-		_updateWeight: function ( time ) {
-
-			var weight = 0;
-
-			if ( this.enabled ) {
-
-				weight = this.weight;
-				var interpolant = this._weightInterpolant;
-
-				if ( interpolant !== null ) {
-
-					var interpolantValue = interpolant.evaluate( time )[ 0 ];
-
-					weight *= interpolantValue;
-
-					if ( time > interpolant.parameterPositions[ 1 ] ) {
-
-						this.stopFading();
-
-						if ( interpolantValue === 0 ) {
-
-							// faded out, disable
-							this.enabled = false;
-
-						}
-
-					}
-
-				}
-
-			}
-
-			this._effectiveWeight = weight;
-			return weight;
-
-		},
-
-		_updateTimeScale: function ( time ) {
-
-			var timeScale = 0;
-
-			if ( ! this.paused ) {
-
-				timeScale = this.timeScale;
-
-				var interpolant = this._timeScaleInterpolant;
-
-				if ( interpolant !== null ) {
-
-					var interpolantValue = interpolant.evaluate( time )[ 0 ];
-
-					timeScale *= interpolantValue;
-
-					if ( time > interpolant.parameterPositions[ 1 ] ) {
-
-						this.stopWarping();
-
-						if ( timeScale === 0 ) {
-
-							// motion has halted, pause
-							this.paused = true;
-
-						} else {
-
-							// warp done - apply final time scale
-							this.timeScale = timeScale;
-
-						}
-
-					}
-
-				}
-
-			}
-
-			this._effectiveTimeScale = timeScale;
-			return timeScale;
-
-		},
-
-		_updateTime: function ( deltaTime ) {
-
-			var time = this.time + deltaTime;
-
-			if ( deltaTime === 0 ) return time;
-
-			var duration = this._clip.duration,
-
-				loop = this.loop,
-				loopCount = this._loopCount;
-
-			if ( loop === LoopOnce ) {
-
-				if ( loopCount === - 1 ) {
-
-					// just started
-
-					this._loopCount = 0;
-					this._setEndings( true, true, false );
-
-				}
-
-				handle_stop: {
-
-					if ( time >= duration ) {
-
-						time = duration;
-
-					} else if ( time < 0 ) {
-
-						time = 0;
-
-					} else break handle_stop;
-
-					if ( this.clampWhenFinished ) this.paused = true;
-					else this.enabled = false;
-
-					this._mixer.dispatchEvent( {
-						type: 'finished', action: this,
-						direction: deltaTime < 0 ? - 1 : 1
-					} );
-
-				}
-
-			} else { // repetitive Repeat or PingPong
-
-				var pingPong = ( loop === LoopPingPong );
-
-				if ( loopCount === - 1 ) {
-
-					// just started
-
-					if ( deltaTime >= 0 ) {
-
-						loopCount = 0;
-
-						this._setEndings( true, this.repetitions === 0, pingPong );
-
-					} else {
-
-						// when looping in reverse direction, the initial
-						// transition through zero counts as a repetition,
-						// so leave loopCount at -1
-
-						this._setEndings( this.repetitions === 0, true, pingPong );
-
-					}
-
-				}
-
-				if ( time >= duration || time < 0 ) {
-
-					// wrap around
-
-					var loopDelta = Math.floor( time / duration ); // signed
-					time -= duration * loopDelta;
-
-					loopCount += Math.abs( loopDelta );
-
-					var pending = this.repetitions - loopCount;
-
-					if ( pending <= 0 ) {
-
-						// have to stop (switch state, clamp time, fire event)
-
-						if ( this.clampWhenFinished ) this.paused = true;
-						else this.enabled = false;
-
-						time = deltaTime > 0 ? duration : 0;
-
-						this._mixer.dispatchEvent( {
-							type: 'finished', action: this,
-							direction: deltaTime > 0 ? 1 : - 1
-						} );
-
-					} else {
-
-						// keep running
-
-						if ( pending === 1 ) {
-
-							// entering the last round
-
-							var atStart = deltaTime < 0;
-							this._setEndings( atStart, ! atStart, pingPong );
-
-						} else {
-
-							this._setEndings( false, false, pingPong );
-
-						}
-
-						this._loopCount = loopCount;
-
-						this._mixer.dispatchEvent( {
-							type: 'loop', action: this, loopDelta: loopDelta
-						} );
-
-					}
-
-				}
-
-				if ( pingPong && ( loopCount & 1 ) === 1 ) {
-
-					// invert time for the "pong round"
-
-					this.time = time;
-					return duration - time;
-
-				}
-
-			}
-
-			this.time = time;
-			return time;
-
-		},
-
-		_setEndings: function ( atStart, atEnd, pingPong ) {
-
-			var settings = this._interpolantSettings;
-
-			if ( pingPong ) {
-
-				settings.endingStart 	= ZeroSlopeEnding;
-				settings.endingEnd		= ZeroSlopeEnding;
-
-			} else {
-
-				// assuming for LoopOnce atStart == atEnd == true
-
-				if ( atStart ) {
-
-					settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;
-
-				} else {
-
-					settings.endingStart = WrapAroundEnding;
-
-				}
-
-				if ( atEnd ) {
-
-					settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;
-
-				} else {
-
-					settings.endingEnd 	 = WrapAroundEnding;
-
-				}
-
-			}
-
-		},
-
-		_scheduleFading: function ( duration, weightNow, weightThen ) {
-
-			var mixer = this._mixer, now = mixer.time,
-				interpolant = this._weightInterpolant;
-
-			if ( interpolant === null ) {
-
-				interpolant = mixer._lendControlInterpolant();
-				this._weightInterpolant = interpolant;
-
-			}
-
-			var times = interpolant.parameterPositions,
-				values = interpolant.sampleValues;
-
-			times[ 0 ] = now; 				values[ 0 ] = weightNow;
-			times[ 1 ] = now + duration;	values[ 1 ] = weightThen;
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 *
-	 * Player for AnimationClips.
-	 *
-	 *
-	 * @author Ben Houston / http://clara.io/
-	 * @author David Sarno / http://lighthaus.us/
-	 * @author tschw
-	 */
-
-	function AnimationMixer( root ) {
-
-		this._root = root;
-		this._initMemoryManager();
-		this._accuIndex = 0;
-
-		this.time = 0;
-
-		this.timeScale = 1.0;
-
-	}
-
-	AnimationMixer.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
-
-		constructor: AnimationMixer,
-
-		_bindAction: function ( action, prototypeAction ) {
-
-			var root = action._localRoot || this._root,
-				tracks = action._clip.tracks,
-				nTracks = tracks.length,
-				bindings = action._propertyBindings,
-				interpolants = action._interpolants,
-				rootUuid = root.uuid,
-				bindingsByRoot = this._bindingsByRootAndName,
-				bindingsByName = bindingsByRoot[ rootUuid ];
-
-			if ( bindingsByName === undefined ) {
-
-				bindingsByName = {};
-				bindingsByRoot[ rootUuid ] = bindingsByName;
-
-			}
-
-			for ( var i = 0; i !== nTracks; ++ i ) {
-
-				var track = tracks[ i ],
-					trackName = track.name,
-					binding = bindingsByName[ trackName ];
-
-				if ( binding !== undefined ) {
-
-					bindings[ i ] = binding;
-
-				} else {
-
-					binding = bindings[ i ];
-
-					if ( binding !== undefined ) {
-
-						// existing binding, make sure the cache knows
-
-						if ( binding._cacheIndex === null ) {
-
-							++ binding.referenceCount;
-							this._addInactiveBinding( binding, rootUuid, trackName );
-
-						}
-
-						continue;
-
-					}
-
-					var path = prototypeAction && prototypeAction.
-						_propertyBindings[ i ].binding.parsedPath;
-
-					binding = new PropertyMixer(
-						PropertyBinding.create( root, trackName, path ),
-						track.ValueTypeName, track.getValueSize() );
-
-					++ binding.referenceCount;
-					this._addInactiveBinding( binding, rootUuid, trackName );
-
-					bindings[ i ] = binding;
-
-				}
-
-				interpolants[ i ].resultBuffer = binding.buffer;
-
-			}
-
-		},
-
-		_activateAction: function ( action ) {
-
-			if ( ! this._isActiveAction( action ) ) {
-
-				if ( action._cacheIndex === null ) {
-
-					// this action has been forgotten by the cache, but the user
-					// appears to be still using it -> rebind
-
-					var rootUuid = ( action._localRoot || this._root ).uuid,
-						clipUuid = action._clip.uuid,
-						actionsForClip = this._actionsByClip[ clipUuid ];
-
-					this._bindAction( action,
-						actionsForClip && actionsForClip.knownActions[ 0 ] );
-
-					this._addInactiveAction( action, clipUuid, rootUuid );
-
-				}
-
-				var bindings = action._propertyBindings;
-
-				// increment reference counts / sort out state
-				for ( var i = 0, n = bindings.length; i !== n; ++ i ) {
-
-					var binding = bindings[ i ];
-
-					if ( binding.useCount ++ === 0 ) {
-
-						this._lendBinding( binding );
-						binding.saveOriginalState();
-
-					}
-
-				}
-
-				this._lendAction( action );
-
-			}
-
-		},
-
-		_deactivateAction: function ( action ) {
-
-			if ( this._isActiveAction( action ) ) {
-
-				var bindings = action._propertyBindings;
-
-				// decrement reference counts / sort out state
-				for ( var i = 0, n = bindings.length; i !== n; ++ i ) {
-
-					var binding = bindings[ i ];
-
-					if ( -- binding.useCount === 0 ) {
-
-						binding.restoreOriginalState();
-						this._takeBackBinding( binding );
-
-					}
-
-				}
-
-				this._takeBackAction( action );
-
-			}
-
-		},
-
-		// Memory manager
-
-		_initMemoryManager: function () {
-
-			this._actions = []; // 'nActiveActions' followed by inactive ones
-			this._nActiveActions = 0;
-
-			this._actionsByClip = {};
-			// inside:
-			// {
-			// 		knownActions: Array< AnimationAction >	- used as prototypes
-			// 		actionByRoot: AnimationAction			- lookup
-			// }
-
-
-			this._bindings = []; // 'nActiveBindings' followed by inactive ones
-			this._nActiveBindings = 0;
-
-			this._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >
-
-
-			this._controlInterpolants = []; // same game as above
-			this._nActiveControlInterpolants = 0;
-
-			var scope = this;
-
-			this.stats = {
-
-				actions: {
-					get total() {
-
-						return scope._actions.length;
-
-					},
-					get inUse() {
-
-						return scope._nActiveActions;
-
-					}
-				},
-				bindings: {
-					get total() {
-
-						return scope._bindings.length;
-
-					},
-					get inUse() {
-
-						return scope._nActiveBindings;
-
-					}
-				},
-				controlInterpolants: {
-					get total() {
-
-						return scope._controlInterpolants.length;
-
-					},
-					get inUse() {
-
-						return scope._nActiveControlInterpolants;
-
-					}
-				}
-
-			};
-
-		},
-
-		// Memory management for AnimationAction objects
-
-		_isActiveAction: function ( action ) {
-
-			var index = action._cacheIndex;
-			return index !== null && index < this._nActiveActions;
-
-		},
-
-		_addInactiveAction: function ( action, clipUuid, rootUuid ) {
-
-			var actions = this._actions,
-				actionsByClip = this._actionsByClip,
-				actionsForClip = actionsByClip[ clipUuid ];
-
-			if ( actionsForClip === undefined ) {
-
-				actionsForClip = {
-
-					knownActions: [ action ],
-					actionByRoot: {}
-
-				};
-
-				action._byClipCacheIndex = 0;
-
-				actionsByClip[ clipUuid ] = actionsForClip;
-
-			} else {
-
-				var knownActions = actionsForClip.knownActions;
-
-				action._byClipCacheIndex = knownActions.length;
-				knownActions.push( action );
-
-			}
-
-			action._cacheIndex = actions.length;
-			actions.push( action );
-
-			actionsForClip.actionByRoot[ rootUuid ] = action;
-
-		},
-
-		_removeInactiveAction: function ( action ) {
-
-			var actions = this._actions,
-				lastInactiveAction = actions[ actions.length - 1 ],
-				cacheIndex = action._cacheIndex;
-
-			lastInactiveAction._cacheIndex = cacheIndex;
-			actions[ cacheIndex ] = lastInactiveAction;
-			actions.pop();
-
-			action._cacheIndex = null;
-
-
-			var clipUuid = action._clip.uuid,
-				actionsByClip = this._actionsByClip,
-				actionsForClip = actionsByClip[ clipUuid ],
-				knownActionsForClip = actionsForClip.knownActions,
-
-				lastKnownAction =
-					knownActionsForClip[ knownActionsForClip.length - 1 ],
-
-				byClipCacheIndex = action._byClipCacheIndex;
-
-			lastKnownAction._byClipCacheIndex = byClipCacheIndex;
-			knownActionsForClip[ byClipCacheIndex ] = lastKnownAction;
-			knownActionsForClip.pop();
-
-			action._byClipCacheIndex = null;
-
-
-			var actionByRoot = actionsForClip.actionByRoot,
-				rootUuid = ( action._localRoot || this._root ).uuid;
-
-			delete actionByRoot[ rootUuid ];
-
-			if ( knownActionsForClip.length === 0 ) {
-
-				delete actionsByClip[ clipUuid ];
-
-			}
-
-			this._removeInactiveBindingsForAction( action );
-
-		},
-
-		_removeInactiveBindingsForAction: function ( action ) {
-
-			var bindings = action._propertyBindings;
-			for ( var i = 0, n = bindings.length; i !== n; ++ i ) {
-
-				var binding = bindings[ i ];
-
-				if ( -- binding.referenceCount === 0 ) {
-
-					this._removeInactiveBinding( binding );
-
-				}
-
-			}
-
-		},
-
-		_lendAction: function ( action ) {
-
-			// [ active actions |  inactive actions  ]
-			// [  active actions >| inactive actions ]
-			//                 s        a
-			//                  <-swap->
-			//                 a        s
-
-			var actions = this._actions,
-				prevIndex = action._cacheIndex,
-
-				lastActiveIndex = this._nActiveActions ++,
-
-				firstInactiveAction = actions[ lastActiveIndex ];
-
-			action._cacheIndex = lastActiveIndex;
-			actions[ lastActiveIndex ] = action;
-
-			firstInactiveAction._cacheIndex = prevIndex;
-			actions[ prevIndex ] = firstInactiveAction;
-
-		},
-
-		_takeBackAction: function ( action ) {
-
-			// [  active actions  | inactive actions ]
-			// [ active actions |< inactive actions  ]
-			//        a        s
-			//         <-swap->
-			//        s        a
-
-			var actions = this._actions,
-				prevIndex = action._cacheIndex,
-
-				firstInactiveIndex = -- this._nActiveActions,
-
-				lastActiveAction = actions[ firstInactiveIndex ];
-
-			action._cacheIndex = firstInactiveIndex;
-			actions[ firstInactiveIndex ] = action;
-
-			lastActiveAction._cacheIndex = prevIndex;
-			actions[ prevIndex ] = lastActiveAction;
-
-		},
-
-		// Memory management for PropertyMixer objects
-
-		_addInactiveBinding: function ( binding, rootUuid, trackName ) {
-
-			var bindingsByRoot = this._bindingsByRootAndName,
-				bindingByName = bindingsByRoot[ rootUuid ],
-
-				bindings = this._bindings;
-
-			if ( bindingByName === undefined ) {
-
-				bindingByName = {};
-				bindingsByRoot[ rootUuid ] = bindingByName;
-
-			}
-
-			bindingByName[ trackName ] = binding;
-
-			binding._cacheIndex = bindings.length;
-			bindings.push( binding );
-
-		},
-
-		_removeInactiveBinding: function ( binding ) {
-
-			var bindings = this._bindings,
-				propBinding = binding.binding,
-				rootUuid = propBinding.rootNode.uuid,
-				trackName = propBinding.path,
-				bindingsByRoot = this._bindingsByRootAndName,
-				bindingByName = bindingsByRoot[ rootUuid ],
-
-				lastInactiveBinding = bindings[ bindings.length - 1 ],
-				cacheIndex = binding._cacheIndex;
-
-			lastInactiveBinding._cacheIndex = cacheIndex;
-			bindings[ cacheIndex ] = lastInactiveBinding;
-			bindings.pop();
-
-			delete bindingByName[ trackName ];
-
-			remove_empty_map: {
-
-				for ( var _ in bindingByName ) break remove_empty_map; // eslint-disable-line no-unused-vars
-
-				delete bindingsByRoot[ rootUuid ];
-
-			}
-
-		},
-
-		_lendBinding: function ( binding ) {
-
-			var bindings = this._bindings,
-				prevIndex = binding._cacheIndex,
-
-				lastActiveIndex = this._nActiveBindings ++,
-
-				firstInactiveBinding = bindings[ lastActiveIndex ];
-
-			binding._cacheIndex = lastActiveIndex;
-			bindings[ lastActiveIndex ] = binding;
-
-			firstInactiveBinding._cacheIndex = prevIndex;
-			bindings[ prevIndex ] = firstInactiveBinding;
-
-		},
-
-		_takeBackBinding: function ( binding ) {
-
-			var bindings = this._bindings,
-				prevIndex = binding._cacheIndex,
-
-				firstInactiveIndex = -- this._nActiveBindings,
-
-				lastActiveBinding = bindings[ firstInactiveIndex ];
-
-			binding._cacheIndex = firstInactiveIndex;
-			bindings[ firstInactiveIndex ] = binding;
-
-			lastActiveBinding._cacheIndex = prevIndex;
-			bindings[ prevIndex ] = lastActiveBinding;
-
-		},
-
-
-		// Memory management of Interpolants for weight and time scale
-
-		_lendControlInterpolant: function () {
-
-			var interpolants = this._controlInterpolants,
-				lastActiveIndex = this._nActiveControlInterpolants ++,
-				interpolant = interpolants[ lastActiveIndex ];
-
-			if ( interpolant === undefined ) {
-
-				interpolant = new LinearInterpolant(
-					new Float32Array( 2 ), new Float32Array( 2 ),
-					1, this._controlInterpolantsResultBuffer );
-
-				interpolant.__cacheIndex = lastActiveIndex;
-				interpolants[ lastActiveIndex ] = interpolant;
-
-			}
-
-			return interpolant;
-
-		},
-
-		_takeBackControlInterpolant: function ( interpolant ) {
-
-			var interpolants = this._controlInterpolants,
-				prevIndex = interpolant.__cacheIndex,
-
-				firstInactiveIndex = -- this._nActiveControlInterpolants,
-
-				lastActiveInterpolant = interpolants[ firstInactiveIndex ];
-
-			interpolant.__cacheIndex = firstInactiveIndex;
-			interpolants[ firstInactiveIndex ] = interpolant;
-
-			lastActiveInterpolant.__cacheIndex = prevIndex;
-			interpolants[ prevIndex ] = lastActiveInterpolant;
-
-		},
-
-		_controlInterpolantsResultBuffer: new Float32Array( 1 ),
-
-		// return an action for a clip optionally using a custom root target
-		// object (this method allocates a lot of dynamic memory in case a
-		// previously unknown clip/root combination is specified)
-		clipAction: function ( clip, optionalRoot ) {
-
-			var root = optionalRoot || this._root,
-				rootUuid = root.uuid,
-
-				clipObject = typeof clip === 'string' ?
-					AnimationClip.findByName( root, clip ) : clip,
-
-				clipUuid = clipObject !== null ? clipObject.uuid : clip,
-
-				actionsForClip = this._actionsByClip[ clipUuid ],
-				prototypeAction = null;
-
-			if ( actionsForClip !== undefined ) {
-
-				var existingAction =
-						actionsForClip.actionByRoot[ rootUuid ];
-
-				if ( existingAction !== undefined ) {
-
-					return existingAction;
-
-				}
-
-				// we know the clip, so we don't have to parse all
-				// the bindings again but can just copy
-				prototypeAction = actionsForClip.knownActions[ 0 ];
-
-				// also, take the clip from the prototype action
-				if ( clipObject === null )
-					clipObject = prototypeAction._clip;
-
-			}
-
-			// clip must be known when specified via string
-			if ( clipObject === null ) return null;
-
-			// allocate all resources required to run it
-			var newAction = new AnimationAction( this, clipObject, optionalRoot );
-
-			this._bindAction( newAction, prototypeAction );
-
-			// and make the action known to the memory manager
-			this._addInactiveAction( newAction, clipUuid, rootUuid );
-
-			return newAction;
-
-		},
-
-		// get an existing action
-		existingAction: function ( clip, optionalRoot ) {
-
-			var root = optionalRoot || this._root,
-				rootUuid = root.uuid,
-
-				clipObject = typeof clip === 'string' ?
-					AnimationClip.findByName( root, clip ) : clip,
-
-				clipUuid = clipObject ? clipObject.uuid : clip,
-
-				actionsForClip = this._actionsByClip[ clipUuid ];
-
-			if ( actionsForClip !== undefined ) {
-
-				return actionsForClip.actionByRoot[ rootUuid ] || null;
-
-			}
-
-			return null;
-
-		},
-
-		// deactivates all previously scheduled actions
-		stopAllAction: function () {
-
-			var actions = this._actions,
-				nActions = this._nActiveActions,
-				bindings = this._bindings,
-				nBindings = this._nActiveBindings;
-
-			this._nActiveActions = 0;
-			this._nActiveBindings = 0;
-
-			for ( var i = 0; i !== nActions; ++ i ) {
-
-				actions[ i ].reset();
-
-			}
-
-			for ( var i = 0; i !== nBindings; ++ i ) {
-
-				bindings[ i ].useCount = 0;
-
-			}
-
-			return this;
-
-		},
-
-		// advance the time and update apply the animation
-		update: function ( deltaTime ) {
-
-			deltaTime *= this.timeScale;
-
-			var actions = this._actions,
-				nActions = this._nActiveActions,
-
-				time = this.time += deltaTime,
-				timeDirection = Math.sign( deltaTime ),
-
-				accuIndex = this._accuIndex ^= 1;
-
-			// run active actions
-
-			for ( var i = 0; i !== nActions; ++ i ) {
-
-				var action = actions[ i ];
-
-				action._update( time, deltaTime, timeDirection, accuIndex );
-
-			}
-
-			// update scene graph
-
-			var bindings = this._bindings,
-				nBindings = this._nActiveBindings;
-
-			for ( var i = 0; i !== nBindings; ++ i ) {
-
-				bindings[ i ].apply( accuIndex );
-
-			}
-
-			return this;
-
-		},
-
-		// return this mixer's root target object
-		getRoot: function () {
-
-			return this._root;
-
-		},
-
-		// free all resources specific to a particular clip
-		uncacheClip: function ( clip ) {
-
-			var actions = this._actions,
-				clipUuid = clip.uuid,
-				actionsByClip = this._actionsByClip,
-				actionsForClip = actionsByClip[ clipUuid ];
-
-			if ( actionsForClip !== undefined ) {
-
-				// note: just calling _removeInactiveAction would mess up the
-				// iteration state and also require updating the state we can
-				// just throw away
-
-				var actionsToRemove = actionsForClip.knownActions;
-
-				for ( var i = 0, n = actionsToRemove.length; i !== n; ++ i ) {
-
-					var action = actionsToRemove[ i ];
-
-					this._deactivateAction( action );
-
-					var cacheIndex = action._cacheIndex,
-						lastInactiveAction = actions[ actions.length - 1 ];
-
-					action._cacheIndex = null;
-					action._byClipCacheIndex = null;
-
-					lastInactiveAction._cacheIndex = cacheIndex;
-					actions[ cacheIndex ] = lastInactiveAction;
-					actions.pop();
-
-					this._removeInactiveBindingsForAction( action );
-
-				}
-
-				delete actionsByClip[ clipUuid ];
-
-			}
-
-		},
-
-		// free all resources specific to a particular root target object
-		uncacheRoot: function ( root ) {
-
-			var rootUuid = root.uuid,
-				actionsByClip = this._actionsByClip;
-
-			for ( var clipUuid in actionsByClip ) {
-
-				var actionByRoot = actionsByClip[ clipUuid ].actionByRoot,
-					action = actionByRoot[ rootUuid ];
-
-				if ( action !== undefined ) {
-
-					this._deactivateAction( action );
-					this._removeInactiveAction( action );
-
-				}
-
-			}
-
-			var bindingsByRoot = this._bindingsByRootAndName,
-				bindingByName = bindingsByRoot[ rootUuid ];
-
-			if ( bindingByName !== undefined ) {
-
-				for ( var trackName in bindingByName ) {
-
-					var binding = bindingByName[ trackName ];
-					binding.restoreOriginalState();
-					this._removeInactiveBinding( binding );
-
-				}
-
-			}
-
-		},
-
-		// remove a targeted clip from the cache
-		uncacheAction: function ( clip, optionalRoot ) {
-
-			var action = this.existingAction( clip, optionalRoot );
-
-			if ( action !== null ) {
-
-				this._deactivateAction( action );
-				this._removeInactiveAction( action );
-
-			}
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function Uniform( value ) {
-
-		if ( typeof value === 'string' ) {
-
-			console.warn( 'THREE.Uniform: Type parameter is no longer needed.' );
-			value = arguments[ 1 ];
-
-		}
-
-		this.value = value;
-
-	}
-
-	Uniform.prototype.clone = function () {
-
-		return new Uniform( this.value.clone === undefined ? this.value : this.value.clone() );
-
-	};
-
-	/**
-	 * @author benaadams / https://twitter.com/ben_a_adams
-	 */
-
-	function InstancedBufferGeometry() {
-
-		BufferGeometry.call( this );
-
-		this.type = 'InstancedBufferGeometry';
-		this.maxInstancedCount = undefined;
-
-	}
-
-	InstancedBufferGeometry.prototype = Object.assign( Object.create( BufferGeometry.prototype ), {
-
-		constructor: InstancedBufferGeometry,
-
-		isInstancedBufferGeometry: true,
-
-		copy: function ( source ) {
-
-			BufferGeometry.prototype.copy.call( this, source );
-
-			this.maxInstancedCount = source.maxInstancedCount;
-
-			return this;
-
-		},
-
-		clone: function () {
-
-			return new this.constructor().copy( this );
-
-		}
-
-	} );
-
-	/**
-	 * @author benaadams / https://twitter.com/ben_a_adams
-	 */
-
-	function InterleavedBufferAttribute( interleavedBuffer, itemSize, offset, normalized ) {
-
-		this.data = interleavedBuffer;
-		this.itemSize = itemSize;
-		this.offset = offset;
-
-		this.normalized = normalized === true;
-
-	}
-
-	Object.defineProperties( InterleavedBufferAttribute.prototype, {
-
-		count: {
-
-			get: function () {
-
-				return this.data.count;
-
-			}
-
-		},
-
-		array: {
-
-			get: function () {
-
-				return this.data.array;
-
-			}
-
-		}
-
-	} );
-
-	Object.assign( InterleavedBufferAttribute.prototype, {
-
-		isInterleavedBufferAttribute: true,
-
-		setX: function ( index, x ) {
-
-			this.data.array[ index * this.data.stride + this.offset ] = x;
-
-			return this;
-
-		},
-
-		setY: function ( index, y ) {
-
-			this.data.array[ index * this.data.stride + this.offset + 1 ] = y;
-
-			return this;
-
-		},
-
-		setZ: function ( index, z ) {
-
-			this.data.array[ index * this.data.stride + this.offset + 2 ] = z;
-
-			return this;
-
-		},
-
-		setW: function ( index, w ) {
-
-			this.data.array[ index * this.data.stride + this.offset + 3 ] = w;
-
-			return this;
-
-		},
-
-		getX: function ( index ) {
-
-			return this.data.array[ index * this.data.stride + this.offset ];
-
-		},
-
-		getY: function ( index ) {
-
-			return this.data.array[ index * this.data.stride + this.offset + 1 ];
-
-		},
-
-		getZ: function ( index ) {
-
-			return this.data.array[ index * this.data.stride + this.offset + 2 ];
-
-		},
-
-		getW: function ( index ) {
-
-			return this.data.array[ index * this.data.stride + this.offset + 3 ];
-
-		},
-
-		setXY: function ( index, x, y ) {
-
-			index = index * this.data.stride + this.offset;
-
-			this.data.array[ index + 0 ] = x;
-			this.data.array[ index + 1 ] = y;
-
-			return this;
-
-		},
-
-		setXYZ: function ( index, x, y, z ) {
-
-			index = index * this.data.stride + this.offset;
-
-			this.data.array[ index + 0 ] = x;
-			this.data.array[ index + 1 ] = y;
-			this.data.array[ index + 2 ] = z;
-
-			return this;
-
-		},
-
-		setXYZW: function ( index, x, y, z, w ) {
-
-			index = index * this.data.stride + this.offset;
-
-			this.data.array[ index + 0 ] = x;
-			this.data.array[ index + 1 ] = y;
-			this.data.array[ index + 2 ] = z;
-			this.data.array[ index + 3 ] = w;
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author benaadams / https://twitter.com/ben_a_adams
-	 */
-
-	function InterleavedBuffer( array, stride ) {
-
-		this.array = array;
-		this.stride = stride;
-		this.count = array !== undefined ? array.length / stride : 0;
-
-		this.dynamic = false;
-		this.updateRange = { offset: 0, count: - 1 };
-
-		this.version = 0;
-
-	}
-
-	Object.defineProperty( InterleavedBuffer.prototype, 'needsUpdate', {
-
-		set: function ( value ) {
-
-			if ( value === true ) this.version ++;
-
-		}
-
-	} );
-
-	Object.assign( InterleavedBuffer.prototype, {
-
-		isInterleavedBuffer: true,
-
-		onUploadCallback: function () {},
-
-		setArray: function ( array ) {
-
-			if ( Array.isArray( array ) ) {
-
-				throw new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );
-
-			}
-
-			this.count = array !== undefined ? array.length / this.stride : 0;
-			this.array = array;
-
-		},
-
-		setDynamic: function ( value ) {
-
-			this.dynamic = value;
-
-			return this;
-
-		},
-
-		copy: function ( source ) {
-
-			this.array = new source.array.constructor( source.array );
-			this.count = source.count;
-			this.stride = source.stride;
-			this.dynamic = source.dynamic;
-
-			return this;
-
-		},
-
-		copyAt: function ( index1, attribute, index2 ) {
-
-			index1 *= this.stride;
-			index2 *= attribute.stride;
-
-			for ( var i = 0, l = this.stride; i < l; i ++ ) {
-
-				this.array[ index1 + i ] = attribute.array[ index2 + i ];
-
-			}
-
-			return this;
-
-		},
-
-		set: function ( value, offset ) {
-
-			if ( offset === undefined ) offset = 0;
-
-			this.array.set( value, offset );
-
-			return this;
-
-		},
-
-		clone: function () {
-
-			return new this.constructor().copy( this );
-
-		},
-
-		onUpload: function ( callback ) {
-
-			this.onUploadCallback = callback;
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author benaadams / https://twitter.com/ben_a_adams
-	 */
-
-	function InstancedInterleavedBuffer( array, stride, meshPerAttribute ) {
-
-		InterleavedBuffer.call( this, array, stride );
-
-		this.meshPerAttribute = meshPerAttribute || 1;
-
-	}
-
-	InstancedInterleavedBuffer.prototype = Object.assign( Object.create( InterleavedBuffer.prototype ), {
-
-		constructor: InstancedInterleavedBuffer,
-
-		isInstancedInterleavedBuffer: true,
-
-		copy: function ( source ) {
-
-			InterleavedBuffer.prototype.copy.call( this, source );
-
-			this.meshPerAttribute = source.meshPerAttribute;
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author benaadams / https://twitter.com/ben_a_adams
-	 */
-
-	function InstancedBufferAttribute( array, itemSize, meshPerAttribute ) {
-
-		BufferAttribute.call( this, array, itemSize );
-
-		this.meshPerAttribute = meshPerAttribute || 1;
-
-	}
-
-	InstancedBufferAttribute.prototype = Object.assign( Object.create( BufferAttribute.prototype ), {
-
-		constructor: InstancedBufferAttribute,
-
-		isInstancedBufferAttribute: true,
-
-		copy: function ( source ) {
-
-			BufferAttribute.prototype.copy.call( this, source );
-
-			this.meshPerAttribute = source.meshPerAttribute;
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author bhouston / http://clara.io/
-	 * @author stephomi / http://stephaneginier.com/
-	 */
-
-	function Raycaster( origin, direction, near, far ) {
-
-		this.ray = new Ray( origin, direction );
-		// direction is assumed to be normalized (for accurate distance calculations)
-
-		this.near = near || 0;
-		this.far = far || Infinity;
-
-		this.params = {
-			Mesh: {},
-			Line: {},
-			LOD: {},
-			Points: { threshold: 1 },
-			Sprite: {}
-		};
-
-		Object.defineProperties( this.params, {
-			PointCloud: {
-				get: function () {
-
-					console.warn( 'THREE.Raycaster: params.PointCloud has been renamed to params.Points.' );
-					return this.Points;
-
-				}
-			}
-		} );
-
-	}
-
-	function ascSort( a, b ) {
-
-		return a.distance - b.distance;
-
-	}
-
-	function intersectObject( object, raycaster, intersects, recursive ) {
-
-		if ( object.visible === false ) return;
-
-		object.raycast( raycaster, intersects );
-
-		if ( recursive === true ) {
-
-			var children = object.children;
-
-			for ( var i = 0, l = children.length; i < l; i ++ ) {
-
-				intersectObject( children[ i ], raycaster, intersects, true );
-
-			}
-
-		}
-
-	}
-
-	Object.assign( Raycaster.prototype, {
-
-		linePrecision: 1,
-
-		set: function ( origin, direction ) {
-
-			// direction is assumed to be normalized (for accurate distance calculations)
-
-			this.ray.set( origin, direction );
-
-		},
-
-		setFromCamera: function ( coords, camera ) {
-
-			if ( ( camera && camera.isPerspectiveCamera ) ) {
-
-				this.ray.origin.setFromMatrixPosition( camera.matrixWorld );
-				this.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();
-
-			} else if ( ( camera && camera.isOrthographicCamera ) ) {
-
-				this.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera
-				this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
-
-			} else {
-
-				console.error( 'THREE.Raycaster: Unsupported camera type.' );
-
-			}
-
-		},
-
-		intersectObject: function ( object, recursive, optionalTarget ) {
-
-			var intersects = optionalTarget || [];
-
-			intersectObject( object, this, intersects, recursive );
-
-			intersects.sort( ascSort );
-
-			return intersects;
-
-		},
-
-		intersectObjects: function ( objects, recursive, optionalTarget ) {
-
-			var intersects = optionalTarget || [];
-
-			if ( Array.isArray( objects ) === false ) {
-
-				console.warn( 'THREE.Raycaster.intersectObjects: objects is not an Array.' );
-				return intersects;
-
-			}
-
-			for ( var i = 0, l = objects.length; i < l; i ++ ) {
-
-				intersectObject( objects[ i ], this, intersects, recursive );
-
-			}
-
-			intersects.sort( ascSort );
-
-			return intersects;
-
-		}
-
-	} );
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function Clock( autoStart ) {
-
-		this.autoStart = ( autoStart !== undefined ) ? autoStart : true;
-
-		this.startTime = 0;
-		this.oldTime = 0;
-		this.elapsedTime = 0;
-
-		this.running = false;
-
-	}
-
-	Object.assign( Clock.prototype, {
-
-		start: function () {
-
-			this.startTime = ( typeof performance === 'undefined' ? Date : performance ).now(); // see #10732
-
-			this.oldTime = this.startTime;
-			this.elapsedTime = 0;
-			this.running = true;
-
-		},
-
-		stop: function () {
-
-			this.getElapsedTime();
-			this.running = false;
-			this.autoStart = false;
-
-		},
-
-		getElapsedTime: function () {
-
-			this.getDelta();
-			return this.elapsedTime;
-
-		},
-
-		getDelta: function () {
-
-			var diff = 0;
-
-			if ( this.autoStart && ! this.running ) {
-
-				this.start();
-				return 0;
-
-			}
-
-			if ( this.running ) {
-
-				var newTime = ( typeof performance === 'undefined' ? Date : performance ).now();
-
-				diff = ( newTime - this.oldTime ) / 1000;
-				this.oldTime = newTime;
-
-				this.elapsedTime += diff;
-
-			}
-
-			return diff;
-
-		}
-
-	} );
-
-	/**
-	 * @author bhouston / http://clara.io
-	 * @author WestLangley / http://github.com/WestLangley
-	 *
-	 * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system
-	 *
-	 * The poles (phi) are at the positive and negative y axis.
-	 * The equator starts at positive z.
-	 */
-
-	function Spherical( radius, phi, theta ) {
-
-		this.radius = ( radius !== undefined ) ? radius : 1.0;
-		this.phi = ( phi !== undefined ) ? phi : 0; // up / down towards top and bottom pole
-		this.theta = ( theta !== undefined ) ? theta : 0; // around the equator of the sphere
-
-		return this;
-
-	}
-
-	Object.assign( Spherical.prototype, {
-
-		set: function ( radius, phi, theta ) {
-
-			this.radius = radius;
-			this.phi = phi;
-			this.theta = theta;
-
-			return this;
-
-		},
-
-		clone: function () {
-
-			return new this.constructor().copy( this );
-
-		},
-
-		copy: function ( other ) {
-
-			this.radius = other.radius;
-			this.phi = other.phi;
-			this.theta = other.theta;
-
-			return this;
-
-		},
-
-		// restrict phi to be betwee EPS and PI-EPS
-		makeSafe: function () {
-
-			var EPS = 0.000001;
-			this.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );
-
-			return this;
-
-		},
-
-		setFromVector3: function ( vec3 ) {
-
-			this.radius = vec3.length();
-
-			if ( this.radius === 0 ) {
-
-				this.theta = 0;
-				this.phi = 0;
-
-			} else {
-
-				this.theta = Math.atan2( vec3.x, vec3.z ); // equator angle around y-up axis
-				this.phi = Math.acos( _Math.clamp( vec3.y / this.radius, - 1, 1 ) ); // polar angle
-
-			}
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author Mugen87 / https://github.com/Mugen87
-	 *
-	 * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system
-	 *
-	 */
-
-	function Cylindrical( radius, theta, y ) {
-
-		this.radius = ( radius !== undefined ) ? radius : 1.0; // distance from the origin to a point in the x-z plane
-		this.theta = ( theta !== undefined ) ? theta : 0; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis
-		this.y = ( y !== undefined ) ? y : 0; // height above the x-z plane
-
-		return this;
-
-	}
-
-	Object.assign( Cylindrical.prototype, {
-
-		set: function ( radius, theta, y ) {
-
-			this.radius = radius;
-			this.theta = theta;
-			this.y = y;
-
-			return this;
-
-		},
-
-		clone: function () {
-
-			return new this.constructor().copy( this );
-
-		},
-
-		copy: function ( other ) {
-
-			this.radius = other.radius;
-			this.theta = other.theta;
-			this.y = other.y;
-
-			return this;
-
-		},
-
-		setFromVector3: function ( vec3 ) {
-
-			this.radius = Math.sqrt( vec3.x * vec3.x + vec3.z * vec3.z );
-			this.theta = Math.atan2( vec3.x, vec3.z );
-			this.y = vec3.y;
-
-			return this;
-
-		}
-
-	} );
-
-	/**
-	 * @author bhouston / http://clara.io
-	 */
-
-	function Box2( min, max ) {
-
-		this.min = ( min !== undefined ) ? min : new Vector2( + Infinity, + Infinity );
-		this.max = ( max !== undefined ) ? max : new Vector2( - Infinity, - Infinity );
-
-	}
-
-	Object.assign( Box2.prototype, {
-
-		set: function ( min, max ) {
-
-			this.min.copy( min );
-			this.max.copy( max );
-
-			return this;
-
-		},
-
-		setFromPoints: function ( points ) {
-
-			this.makeEmpty();
-
-			for ( var i = 0, il = points.length; i < il; i ++ ) {
-
-				this.expandByPoint( points[ i ] );
-
-			}
-
-			return this;
-
-		},
-
-		setFromCenterAndSize: function () {
-
-			var v1 = new Vector2();
-
-			return function setFromCenterAndSize( center, size ) {
-
-				var halfSize = v1.copy( size ).multiplyScalar( 0.5 );
-				this.min.copy( center ).sub( halfSize );
-				this.max.copy( center ).add( halfSize );
-
-				return this;
-
-			};
-
-		}(),
-
-		clone: function () {
-
-			return new this.constructor().copy( this );
-
-		},
-
-		copy: function ( box ) {
-
-			this.min.copy( box.min );
-			this.max.copy( box.max );
-
-			return this;
-
-		},
-
-		makeEmpty: function () {
-
-			this.min.x = this.min.y = + Infinity;
-			this.max.x = this.max.y = - Infinity;
-
-			return this;
-
-		},
-
-		isEmpty: function () {
-
-			// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
-
-			return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );
-
-		},
-
-		getCenter: function ( target ) {
-
-			if ( target === undefined ) {
-
-				console.warn( 'THREE.Box2: .getCenter() target is now required' );
-				target = new Vector2();
-
-			}
-
-			return this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );
-
-		},
-
-		getSize: function ( target ) {
-
-			if ( target === undefined ) {
-
-				console.warn( 'THREE.Box2: .getSize() target is now required' );
-				target = new Vector2();
-
-			}
-
-			return this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );
-
-		},
-
-		expandByPoint: function ( point ) {
-
-			this.min.min( point );
-			this.max.max( point );
-
-			return this;
-
-		},
-
-		expandByVector: function ( vector ) {
-
-			this.min.sub( vector );
-			this.max.add( vector );
-
-			return this;
-
-		},
-
-		expandByScalar: function ( scalar ) {
-
-			this.min.addScalar( - scalar );
-			this.max.addScalar( scalar );
-
-			return this;
-
-		},
-
-		containsPoint: function ( point ) {
-
-			return point.x < this.min.x || point.x > this.max.x ||
-				point.y < this.min.y || point.y > this.max.y ? false : true;
-
-		},
-
-		containsBox: function ( box ) {
-
-			return this.min.x <= box.min.x && box.max.x <= this.max.x &&
-				this.min.y <= box.min.y && box.max.y <= this.max.y;
-
-		},
-
-		getParameter: function ( point, target ) {
-
-			// This can potentially have a divide by zero if the box
-			// has a size dimension of 0.
-
-			if ( target === undefined ) {
-
-				console.warn( 'THREE.Box2: .getParameter() target is now required' );
-				target = new Vector2();
-
-			}
-
-			return target.set(
-				( point.x - this.min.x ) / ( this.max.x - this.min.x ),
-				( point.y - this.min.y ) / ( this.max.y - this.min.y )
-			);
-
-		},
-
-		intersectsBox: function ( box ) {
-
-			// using 4 splitting planes to rule out intersections
-
-			return box.max.x < this.min.x || box.min.x > this.max.x ||
-				box.max.y < this.min.y || box.min.y > this.max.y ? false : true;
-
-		},
-
-		clampPoint: function ( point, target ) {
-
-			if ( target === undefined ) {
-
-				console.warn( 'THREE.Box2: .clampPoint() target is now required' );
-				target = new Vector2();
-
-			}
-
-			return target.copy( point ).clamp( this.min, this.max );
-
-		},
-
-		distanceToPoint: function () {
-
-			var v1 = new Vector2();
-
-			return function distanceToPoint( point ) {
-
-				var clampedPoint = v1.copy( point ).clamp( this.min, this.max );
-				return clampedPoint.sub( point ).length();
-
-			};
-
-		}(),
-
-		intersect: function ( box ) {
-
-			this.min.max( box.min );
-			this.max.min( box.max );
-
-			return this;
-
-		},
-
-		union: function ( box ) {
-
-			this.min.min( box.min );
-			this.max.max( box.max );
-
-			return this;
-
-		},
-
-		translate: function ( offset ) {
-
-			this.min.add( offset );
-			this.max.add( offset );
-
-			return this;
-
-		},
-
-		equals: function ( box ) {
-
-			return box.min.equals( this.min ) && box.max.equals( this.max );
-
-		}
-
-	} );
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 */
-
-	function ImmediateRenderObject( material ) {
-
-		Object3D.call( this );
-
-		this.material = material;
-		this.render = function ( /* renderCallback */ ) {};
-
-	}
-
-	ImmediateRenderObject.prototype = Object.create( Object3D.prototype );
-	ImmediateRenderObject.prototype.constructor = ImmediateRenderObject;
-
-	ImmediateRenderObject.prototype.isImmediateRenderObject = true;
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
-
-	function VertexNormalsHelper( object, size, hex, linewidth ) {
-
-		this.object = object;
-
-		this.size = ( size !== undefined ) ? size : 1;
-
-		var color = ( hex !== undefined ) ? hex : 0xff0000;
-
-		var width = ( linewidth !== undefined ) ? linewidth : 1;
-
-		//
-
-		var nNormals = 0;
-
-		var objGeometry = this.object.geometry;
-
-		if ( objGeometry && objGeometry.isGeometry ) {
-
-			nNormals = objGeometry.faces.length * 3;
-
-		} else if ( objGeometry && objGeometry.isBufferGeometry ) {
-
-			nNormals = objGeometry.attributes.normal.count;
-
-		}
-
-		//
-
-		var geometry = new BufferGeometry();
-
-		var positions = new Float32BufferAttribute( nNormals * 2 * 3, 3 );
-
-		geometry.addAttribute( 'position', positions );
-
-		LineSegments.call( this, geometry, new LineBasicMaterial( { color: color, linewidth: width } ) );
-
-		//
-
-		this.matrixAutoUpdate = false;
-
-		this.update();
-
-	}
-
-	VertexNormalsHelper.prototype = Object.create( LineSegments.prototype );
-	VertexNormalsHelper.prototype.constructor = VertexNormalsHelper;
-
-	VertexNormalsHelper.prototype.update = ( function () {
-
-		var v1 = new Vector3();
-		var v2 = new Vector3();
-		var normalMatrix = new Matrix3();
-
-		return function update() {
-
-			var keys = [ 'a', 'b', 'c' ];
-
-			this.object.updateMatrixWorld( true );
-
-			normalMatrix.getNormalMatrix( this.object.matrixWorld );
-
-			var matrixWorld = this.object.matrixWorld;
-
-			var position = this.geometry.attributes.position;
-
-			//
-
-			var objGeometry = this.object.geometry;
-
-			if ( objGeometry && objGeometry.isGeometry ) {
-
-				var vertices = objGeometry.vertices;
-
-				var faces = objGeometry.faces;
-
-				var idx = 0;
-
-				for ( var i = 0, l = faces.length; i < l; i ++ ) {
-
-					var face = faces[ i ];
-
-					for ( var j = 0, jl = face.vertexNormals.length; j < jl; j ++ ) {
-
-						var vertex = vertices[ face[ keys[ j ] ] ];
-
-						var normal = face.vertexNormals[ j ];
-
-						v1.copy( vertex ).applyMatrix4( matrixWorld );
-
-						v2.copy( normal ).applyMatrix3( normalMatrix ).normalize().multiplyScalar( this.size ).add( v1 );
-
-						position.setXYZ( idx, v1.x, v1.y, v1.z );
-
-						idx = idx + 1;
-
-						position.setXYZ( idx, v2.x, v2.y, v2.z );
-
-						idx = idx + 1;
-
-					}
-
-				}
-
-			} else if ( objGeometry && objGeometry.isBufferGeometry ) {
-
-				var objPos = objGeometry.attributes.position;
-
-				var objNorm = objGeometry.attributes.normal;
-
-				var idx = 0;
-
-				// for simplicity, ignore index and drawcalls, and render every normal
-
-				for ( var j = 0, jl = objPos.count; j < jl; j ++ ) {
-
-					v1.set( objPos.getX( j ), objPos.getY( j ), objPos.getZ( j ) ).applyMatrix4( matrixWorld );
-
-					v2.set( objNorm.getX( j ), objNorm.getY( j ), objNorm.getZ( j ) );
-
-					v2.applyMatrix3( normalMatrix ).normalize().multiplyScalar( this.size ).add( v1 );
-
-					position.setXYZ( idx, v1.x, v1.y, v1.z );
-
-					idx = idx + 1;
-
-					position.setXYZ( idx, v2.x, v2.y, v2.z );
-
-					idx = idx + 1;
-
-				}
-
-			}
-
-			position.needsUpdate = true;
-
-		};
-
-	}() );
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
-
-	function SpotLightHelper( light, color ) {
-
-		Object3D.call( this );
-
-		this.light = light;
-		this.light.updateMatrixWorld();
-
-		this.matrix = light.matrixWorld;
-		this.matrixAutoUpdate = false;
-
-		this.color = color;
-
-		var geometry = new BufferGeometry();
-
-		var positions = [
-			0, 0, 0, 	0, 0, 1,
-			0, 0, 0, 	1, 0, 1,
-			0, 0, 0,	- 1, 0, 1,
-			0, 0, 0, 	0, 1, 1,
-			0, 0, 0, 	0, - 1, 1
-		];
-
-		for ( var i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {
-
-			var p1 = ( i / l ) * Math.PI * 2;
-			var p2 = ( j / l ) * Math.PI * 2;
-
-			positions.push(
-				Math.cos( p1 ), Math.sin( p1 ), 1,
-				Math.cos( p2 ), Math.sin( p2 ), 1
-			);
-
-		}
-
-		geometry.addAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
-
-		var material = new LineBasicMaterial( { fog: false } );
-
-		this.cone = new LineSegments( geometry, material );
-		this.add( this.cone );
-
-		this.update();
-
-	}
-
-	SpotLightHelper.prototype = Object.create( Object3D.prototype );
-	SpotLightHelper.prototype.constructor = SpotLightHelper;
-
-	SpotLightHelper.prototype.dispose = function () {
-
-		this.cone.geometry.dispose();
-		this.cone.material.dispose();
-
-	};
-
-	SpotLightHelper.prototype.update = function () {
-
-		var vector = new Vector3();
-		var vector2 = new Vector3();
-
-		return function update() {
-
-			this.light.updateMatrixWorld();
-
-			var coneLength = this.light.distance ? this.light.distance : 1000;
-			var coneWidth = coneLength * Math.tan( this.light.angle );
-
-			this.cone.scale.set( coneWidth, coneWidth, coneLength );
-
-			vector.setFromMatrixPosition( this.light.matrixWorld );
-			vector2.setFromMatrixPosition( this.light.target.matrixWorld );
-
-			this.cone.lookAt( vector2.sub( vector ) );
-
-			if ( this.color !== undefined ) {
-
-				this.cone.material.color.set( this.color );
-
-			} else {
-
-				this.cone.material.color.copy( this.light.color );
-
-			}
-
-		};
-
-	}();
-
-	/**
-	 * @author Sean Griffin / http://twitter.com/sgrif
-	 * @author Michael Guerrero / http://realitymeltdown.com
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author ikerr / http://verold.com
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	function getBoneList( object ) {
-
-		var boneList = [];
-
-		if ( object && object.isBone ) {
-
-			boneList.push( object );
-
-		}
-
-		for ( var i = 0; i < object.children.length; i ++ ) {
-
-			boneList.push.apply( boneList, getBoneList( object.children[ i ] ) );
-
-		}
-
-		return boneList;
-
-	}
-
-	function SkeletonHelper( object ) {
-
-		var bones = getBoneList( object );
-
-		var geometry = new BufferGeometry();
-
-		var vertices = [];
-		var colors = [];
-
-		var color1 = new Color( 0, 0, 1 );
-		var color2 = new Color( 0, 1, 0 );
-
-		for ( var i = 0; i < bones.length; i ++ ) {
-
-			var bone = bones[ i ];
-
-			if ( bone.parent && bone.parent.isBone ) {
-
-				vertices.push( 0, 0, 0 );
-				vertices.push( 0, 0, 0 );
-				colors.push( color1.r, color1.g, color1.b );
-				colors.push( color2.r, color2.g, color2.b );
-
-			}
-
-		}
-
-		geometry.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		geometry.addAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
-
-		var material = new LineBasicMaterial( { vertexColors: VertexColors, depthTest: false, depthWrite: false, transparent: true } );
-
-		LineSegments.call( this, geometry, material );
-
-		this.root = object;
-		this.bones = bones;
-
-		this.matrix = object.matrixWorld;
-		this.matrixAutoUpdate = false;
-
-	}
-
-	SkeletonHelper.prototype = Object.create( LineSegments.prototype );
-	SkeletonHelper.prototype.constructor = SkeletonHelper;
-
-	SkeletonHelper.prototype.updateMatrixWorld = function () {
-
-		var vector = new Vector3();
-
-		var boneMatrix = new Matrix4();
-		var matrixWorldInv = new Matrix4();
-
-		return function updateMatrixWorld( force ) {
-
-			var bones = this.bones;
-
-			var geometry = this.geometry;
-			var position = geometry.getAttribute( 'position' );
-
-			matrixWorldInv.getInverse( this.root.matrixWorld );
-
-			for ( var i = 0, j = 0; i < bones.length; i ++ ) {
-
-				var bone = bones[ i ];
-
-				if ( bone.parent && bone.parent.isBone ) {
-
-					boneMatrix.multiplyMatrices( matrixWorldInv, bone.matrixWorld );
-					vector.setFromMatrixPosition( boneMatrix );
-					position.setXYZ( j, vector.x, vector.y, vector.z );
-
-					boneMatrix.multiplyMatrices( matrixWorldInv, bone.parent.matrixWorld );
-					vector.setFromMatrixPosition( boneMatrix );
-					position.setXYZ( j + 1, vector.x, vector.y, vector.z );
-
-					j += 2;
-
-				}
-
-			}
-
-			geometry.getAttribute( 'position' ).needsUpdate = true;
-
-			Object3D.prototype.updateMatrixWorld.call( this, force );
-
-		};
-
-	}();
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function PointLightHelper( light, sphereSize, color ) {
-
-		this.light = light;
-		this.light.updateMatrixWorld();
-
-		this.color = color;
-
-		var geometry = new SphereBufferGeometry( sphereSize, 4, 2 );
-		var material = new MeshBasicMaterial( { wireframe: true, fog: false } );
-
-		Mesh.call( this, geometry, material );
-
-		this.matrix = this.light.matrixWorld;
-		this.matrixAutoUpdate = false;
-
-		this.update();
-
-
-		/*
-		var distanceGeometry = new THREE.IcosahedronGeometry( 1, 2 );
-		var distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );
-
-		this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );
-		this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );
-
-		var d = light.distance;
-
-		if ( d === 0.0 ) {
-
-			this.lightDistance.visible = false;
-
-		} else {
-
-			this.lightDistance.scale.set( d, d, d );
-
-		}
-
-		this.add( this.lightDistance );
-		*/
-
-	}
-
-	PointLightHelper.prototype = Object.create( Mesh.prototype );
-	PointLightHelper.prototype.constructor = PointLightHelper;
-
-	PointLightHelper.prototype.dispose = function () {
-
-		this.geometry.dispose();
-		this.material.dispose();
-
-	};
-
-	PointLightHelper.prototype.update = function () {
-
-		if ( this.color !== undefined ) {
-
-			this.material.color.set( this.color );
-
-		} else {
-
-			this.material.color.copy( this.light.color );
-
-		}
-
-		/*
-		var d = this.light.distance;
-
-		if ( d === 0.0 ) {
-
-			this.lightDistance.visible = false;
-
-		} else {
-
-			this.lightDistance.visible = true;
-			this.lightDistance.scale.set( d, d, d );
-
-		}
-		*/
-
-	};
-
-	/**
-	 * @author abelnation / http://github.com/abelnation
-	 * @author Mugen87 / http://github.com/Mugen87
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
-
-	function RectAreaLightHelper( light, color ) {
-
-		Object3D.call( this );
-
-		this.light = light;
-		this.light.updateMatrixWorld();
-
-		this.matrix = light.matrixWorld;
-		this.matrixAutoUpdate = false;
-
-		this.color = color;
-
-		var material = new LineBasicMaterial( { fog: false } );
-
-		var geometry = new BufferGeometry();
-
-		geometry.addAttribute( 'position', new BufferAttribute( new Float32Array( 5 * 3 ), 3 ) );
-
-		this.line = new Line( geometry, material );
-		this.add( this.line );
-
-
-		this.update();
-
-	}
-
-	RectAreaLightHelper.prototype = Object.create( Object3D.prototype );
-	RectAreaLightHelper.prototype.constructor = RectAreaLightHelper;
-
-	RectAreaLightHelper.prototype.dispose = function () {
-
-		this.children[ 0 ].geometry.dispose();
-		this.children[ 0 ].material.dispose();
-
-	};
-
-	RectAreaLightHelper.prototype.update = function () {
-
-		// calculate new dimensions of the helper
-
-		var hx = this.light.width * 0.5;
-		var hy = this.light.height * 0.5;
-
-		var position = this.line.geometry.attributes.position;
-		var array = position.array;
-
-		// update vertices
-
-		array[ 0 ] = hx; array[ 1 ] = - hy; array[ 2 ] = 0;
-		array[ 3 ] = hx; array[ 4 ] = hy; array[ 5 ] = 0;
-		array[ 6 ] = - hx; array[ 7 ] = hy; array[ 8 ] = 0;
-		array[ 9 ] = - hx; array[ 10 ] = - hy; array[ 11 ] = 0;
-		array[ 12 ] = hx; array[ 13 ] = - hy; array[ 14 ] = 0;
-
-		position.needsUpdate = true;
-
-		if ( this.color !== undefined ) {
-
-			this.line.material.color.set( this.color );
-
-		} else {
-
-			this.line.material.color.copy( this.light.color );
-
-		}
-
-	};
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author Mugen87 / https://github.com/Mugen87
-	 */
-
-	function HemisphereLightHelper( light, size, color ) {
-
-		Object3D.call( this );
-
-		this.light = light;
-		this.light.updateMatrixWorld();
-
-		this.matrix = light.matrixWorld;
-		this.matrixAutoUpdate = false;
-
-		this.color = color;
-
-		var geometry = new OctahedronBufferGeometry( size );
-		geometry.rotateY( Math.PI * 0.5 );
-
-		this.material = new MeshBasicMaterial( { wireframe: true, fog: false } );
-		if ( this.color === undefined ) this.material.vertexColors = VertexColors;
-
-		var position = geometry.getAttribute( 'position' );
-		var colors = new Float32Array( position.count * 3 );
-
-		geometry.addAttribute( 'color', new BufferAttribute( colors, 3 ) );
-
-		this.add( new Mesh( geometry, this.material ) );
-
-		this.update();
-
-	}
-
-	HemisphereLightHelper.prototype = Object.create( Object3D.prototype );
-	HemisphereLightHelper.prototype.constructor = HemisphereLightHelper;
-
-	HemisphereLightHelper.prototype.dispose = function () {
-
-		this.children[ 0 ].geometry.dispose();
-		this.children[ 0 ].material.dispose();
-
-	};
-
-	HemisphereLightHelper.prototype.update = function () {
-
-		var vector = new Vector3();
-
-		var color1 = new Color();
-		var color2 = new Color();
-
-		return function update() {
-
-			var mesh = this.children[ 0 ];
-
-			if ( this.color !== undefined ) {
-
-				this.material.color.set( this.color );
-
-			} else {
-
-				var colors = mesh.geometry.getAttribute( 'color' );
-
-				color1.copy( this.light.color );
-				color2.copy( this.light.groundColor );
-
-				for ( var i = 0, l = colors.count; i < l; i ++ ) {
-
-					var color = ( i < ( l / 2 ) ) ? color1 : color2;
-
-					colors.setXYZ( i, color.r, color.g, color.b );
-
-				}
-
-				colors.needsUpdate = true;
-
-			}
-
-			mesh.lookAt( vector.setFromMatrixPosition( this.light.matrixWorld ).negate() );
-
-		};
-
-	}();
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function GridHelper( size, divisions, color1, color2 ) {
-
-		size = size || 10;
-		divisions = divisions || 10;
-		color1 = new Color( color1 !== undefined ? color1 : 0x444444 );
-		color2 = new Color( color2 !== undefined ? color2 : 0x888888 );
-
-		var center = divisions / 2;
-		var step = size / divisions;
-		var halfSize = size / 2;
-
-		var vertices = [], colors = [];
-
-		for ( var i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) {
-
-			vertices.push( - halfSize, 0, k, halfSize, 0, k );
-			vertices.push( k, 0, - halfSize, k, 0, halfSize );
-
-			var color = i === center ? color1 : color2;
-
-			color.toArray( colors, j ); j += 3;
-			color.toArray( colors, j ); j += 3;
-			color.toArray( colors, j ); j += 3;
-			color.toArray( colors, j ); j += 3;
-
-		}
-
-		var geometry = new BufferGeometry();
-		geometry.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		geometry.addAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
-
-		var material = new LineBasicMaterial( { vertexColors: VertexColors } );
-
-		LineSegments.call( this, geometry, material );
-
-	}
-
-	GridHelper.prototype = Object.create( LineSegments.prototype );
-	GridHelper.prototype.constructor = GridHelper;
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author Mugen87 / http://github.com/Mugen87
-	 * @author Hectate / http://www.github.com/Hectate
-	 */
-
-	function PolarGridHelper( radius, radials, circles, divisions, color1, color2 ) {
-
-		radius = radius || 10;
-		radials = radials || 16;
-		circles = circles || 8;
-		divisions = divisions || 64;
-		color1 = new Color( color1 !== undefined ? color1 : 0x444444 );
-		color2 = new Color( color2 !== undefined ? color2 : 0x888888 );
-
-		var vertices = [];
-		var colors = [];
-
-		var x, z;
-		var v, i, j, r, color;
-
-		// create the radials
-
-		for ( i = 0; i <= radials; i ++ ) {
-
-			v = ( i / radials ) * ( Math.PI * 2 );
-
-			x = Math.sin( v ) * radius;
-			z = Math.cos( v ) * radius;
-
-			vertices.push( 0, 0, 0 );
-			vertices.push( x, 0, z );
-
-			color = ( i & 1 ) ? color1 : color2;
-
-			colors.push( color.r, color.g, color.b );
-			colors.push( color.r, color.g, color.b );
-
-		}
-
-		// create the circles
-
-		for ( i = 0; i <= circles; i ++ ) {
-
-			color = ( i & 1 ) ? color1 : color2;
-
-			r = radius - ( radius / circles * i );
-
-			for ( j = 0; j < divisions; j ++ ) {
-
-				// first vertex
-
-				v = ( j / divisions ) * ( Math.PI * 2 );
-
-				x = Math.sin( v ) * r;
-				z = Math.cos( v ) * r;
-
-				vertices.push( x, 0, z );
-				colors.push( color.r, color.g, color.b );
-
-				// second vertex
-
-				v = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );
-
-				x = Math.sin( v ) * r;
-				z = Math.cos( v ) * r;
-
-				vertices.push( x, 0, z );
-				colors.push( color.r, color.g, color.b );
-
-			}
-
-		}
-
-		var geometry = new BufferGeometry();
-		geometry.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		geometry.addAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
-
-		var material = new LineBasicMaterial( { vertexColors: VertexColors } );
-
-		LineSegments.call( this, geometry, material );
-
-	}
-
-	PolarGridHelper.prototype = Object.create( LineSegments.prototype );
-	PolarGridHelper.prototype.constructor = PolarGridHelper;
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
-
-	function FaceNormalsHelper( object, size, hex, linewidth ) {
-
-		// FaceNormalsHelper only supports THREE.Geometry
-
-		this.object = object;
-
-		this.size = ( size !== undefined ) ? size : 1;
-
-		var color = ( hex !== undefined ) ? hex : 0xffff00;
-
-		var width = ( linewidth !== undefined ) ? linewidth : 1;
-
-		//
-
-		var nNormals = 0;
-
-		var objGeometry = this.object.geometry;
-
-		if ( objGeometry && objGeometry.isGeometry ) {
-
-			nNormals = objGeometry.faces.length;
-
-		} else {
-
-			console.warn( 'THREE.FaceNormalsHelper: only THREE.Geometry is supported. Use THREE.VertexNormalsHelper, instead.' );
-
-		}
-
-		//
-
-		var geometry = new BufferGeometry();
-
-		var positions = new Float32BufferAttribute( nNormals * 2 * 3, 3 );
-
-		geometry.addAttribute( 'position', positions );
-
-		LineSegments.call( this, geometry, new LineBasicMaterial( { color: color, linewidth: width } ) );
-
-		//
-
-		this.matrixAutoUpdate = false;
-		this.update();
-
-	}
-
-	FaceNormalsHelper.prototype = Object.create( LineSegments.prototype );
-	FaceNormalsHelper.prototype.constructor = FaceNormalsHelper;
-
-	FaceNormalsHelper.prototype.update = ( function () {
-
-		var v1 = new Vector3();
-		var v2 = new Vector3();
-		var normalMatrix = new Matrix3();
-
-		return function update() {
-
-			this.object.updateMatrixWorld( true );
-
-			normalMatrix.getNormalMatrix( this.object.matrixWorld );
-
-			var matrixWorld = this.object.matrixWorld;
-
-			var position = this.geometry.attributes.position;
-
-			//
-
-			var objGeometry = this.object.geometry;
-
-			var vertices = objGeometry.vertices;
-
-			var faces = objGeometry.faces;
-
-			var idx = 0;
-
-			for ( var i = 0, l = faces.length; i < l; i ++ ) {
-
-				var face = faces[ i ];
-
-				var normal = face.normal;
-
-				v1.copy( vertices[ face.a ] )
-					.add( vertices[ face.b ] )
-					.add( vertices[ face.c ] )
-					.divideScalar( 3 )
-					.applyMatrix4( matrixWorld );
-
-				v2.copy( normal ).applyMatrix3( normalMatrix ).normalize().multiplyScalar( this.size ).add( v1 );
-
-				position.setXYZ( idx, v1.x, v1.y, v1.z );
-
-				idx = idx + 1;
-
-				position.setXYZ( idx, v2.x, v2.y, v2.z );
-
-				idx = idx + 1;
-
-			}
-
-			position.needsUpdate = true;
-
-		};
-
-	}() );
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
-
-	function DirectionalLightHelper( light, size, color ) {
-
-		Object3D.call( this );
-
-		this.light = light;
-		this.light.updateMatrixWorld();
-
-		this.matrix = light.matrixWorld;
-		this.matrixAutoUpdate = false;
-
-		this.color = color;
-
-		if ( size === undefined ) size = 1;
-
-		var geometry = new BufferGeometry();
-		geometry.addAttribute( 'position', new Float32BufferAttribute( [
-			- size, size, 0,
-			size, size, 0,
-			size, - size, 0,
-			- size, - size, 0,
-			- size, size, 0
-		], 3 ) );
-
-		var material = new LineBasicMaterial( { fog: false } );
-
-		this.lightPlane = new Line( geometry, material );
-		this.add( this.lightPlane );
-
-		geometry = new BufferGeometry();
-		geometry.addAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );
-
-		this.targetLine = new Line( geometry, material );
-		this.add( this.targetLine );
-
-		this.update();
-
-	}
-
-	DirectionalLightHelper.prototype = Object.create( Object3D.prototype );
-	DirectionalLightHelper.prototype.constructor = DirectionalLightHelper;
-
-	DirectionalLightHelper.prototype.dispose = function () {
-
-		this.lightPlane.geometry.dispose();
-		this.lightPlane.material.dispose();
-		this.targetLine.geometry.dispose();
-		this.targetLine.material.dispose();
-
-	};
-
-	DirectionalLightHelper.prototype.update = function () {
-
-		var v1 = new Vector3();
-		var v2 = new Vector3();
-		var v3 = new Vector3();
-
-		return function update() {
-
-			v1.setFromMatrixPosition( this.light.matrixWorld );
-			v2.setFromMatrixPosition( this.light.target.matrixWorld );
-			v3.subVectors( v2, v1 );
-
-			this.lightPlane.lookAt( v3 );
-
-			if ( this.color !== undefined ) {
-
-				this.lightPlane.material.color.set( this.color );
-				this.targetLine.material.color.set( this.color );
-
-			} else {
-
-				this.lightPlane.material.color.copy( this.light.color );
-				this.targetLine.material.color.copy( this.light.color );
-
-			}
-
-			this.targetLine.lookAt( v3 );
-			this.targetLine.scale.z = v3.length();
-
-		};
-
-	}();
-
-	/**
-	 * @author alteredq / http://alteredqualia.com/
-	 * @author Mugen87 / https://github.com/Mugen87
-	 *
-	 *	- shows frustum, line of sight and up of the camera
-	 *	- suitable for fast updates
-	 * 	- based on frustum visualization in lightgl.js shadowmap example
-	 *		http://evanw.github.com/lightgl.js/tests/shadowmap.html
-	 */
-
-	function CameraHelper( camera ) {
-
-		var geometry = new BufferGeometry();
-		var material = new LineBasicMaterial( { color: 0xffffff, vertexColors: FaceColors } );
-
-		var vertices = [];
-		var colors = [];
-
-		var pointMap = {};
-
-		// colors
-
-		var colorFrustum = new Color( 0xffaa00 );
-		var colorCone = new Color( 0xff0000 );
-		var colorUp = new Color( 0x00aaff );
-		var colorTarget = new Color( 0xffffff );
-		var colorCross = new Color( 0x333333 );
-
-		// near
-
-		addLine( 'n1', 'n2', colorFrustum );
-		addLine( 'n2', 'n4', colorFrustum );
-		addLine( 'n4', 'n3', colorFrustum );
-		addLine( 'n3', 'n1', colorFrustum );
-
-		// far
-
-		addLine( 'f1', 'f2', colorFrustum );
-		addLine( 'f2', 'f4', colorFrustum );
-		addLine( 'f4', 'f3', colorFrustum );
-		addLine( 'f3', 'f1', colorFrustum );
-
-		// sides
-
-		addLine( 'n1', 'f1', colorFrustum );
-		addLine( 'n2', 'f2', colorFrustum );
-		addLine( 'n3', 'f3', colorFrustum );
-		addLine( 'n4', 'f4', colorFrustum );
-
-		// cone
-
-		addLine( 'p', 'n1', colorCone );
-		addLine( 'p', 'n2', colorCone );
-		addLine( 'p', 'n3', colorCone );
-		addLine( 'p', 'n4', colorCone );
-
-		// up
-
-		addLine( 'u1', 'u2', colorUp );
-		addLine( 'u2', 'u3', colorUp );
-		addLine( 'u3', 'u1', colorUp );
-
-		// target
-
-		addLine( 'c', 't', colorTarget );
-		addLine( 'p', 'c', colorCross );
-
-		// cross
-
-		addLine( 'cn1', 'cn2', colorCross );
-		addLine( 'cn3', 'cn4', colorCross );
-
-		addLine( 'cf1', 'cf2', colorCross );
-		addLine( 'cf3', 'cf4', colorCross );
-
-		function addLine( a, b, color ) {
-
-			addPoint( a, color );
-			addPoint( b, color );
-
-		}
-
-		function addPoint( id, color ) {
-
-			vertices.push( 0, 0, 0 );
-			colors.push( color.r, color.g, color.b );
-
-			if ( pointMap[ id ] === undefined ) {
-
-				pointMap[ id ] = [];
-
-			}
-
-			pointMap[ id ].push( ( vertices.length / 3 ) - 1 );
-
-		}
-
-		geometry.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		geometry.addAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
-
-		LineSegments.call( this, geometry, material );
-
-		this.camera = camera;
-		if ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();
-
-		this.matrix = camera.matrixWorld;
-		this.matrixAutoUpdate = false;
-
-		this.pointMap = pointMap;
-
-		this.update();
-
-	}
-
-	CameraHelper.prototype = Object.create( LineSegments.prototype );
-	CameraHelper.prototype.constructor = CameraHelper;
-
-	CameraHelper.prototype.update = function () {
-
-		var geometry, pointMap;
-
-		var vector = new Vector3();
-		var camera = new Camera();
-
-		function setPoint( point, x, y, z ) {
-
-			vector.set( x, y, z ).unproject( camera );
-
-			var points = pointMap[ point ];
-
-			if ( points !== undefined ) {
-
-				var position = geometry.getAttribute( 'position' );
-
-				for ( var i = 0, l = points.length; i < l; i ++ ) {
-
-					position.setXYZ( points[ i ], vector.x, vector.y, vector.z );
-
-				}
-
-			}
-
-		}
-
-		return function update() {
-
-			geometry = this.geometry;
-			pointMap = this.pointMap;
-
-			var w = 1, h = 1;
-
-			// we need just camera projection matrix
-			// world matrix must be identity
-
-			camera.projectionMatrix.copy( this.camera.projectionMatrix );
-
-			// center / target
-
-			setPoint( 'c', 0, 0, - 1 );
-			setPoint( 't', 0, 0, 1 );
-
-			// near
-
-			setPoint( 'n1', - w, - h, - 1 );
-			setPoint( 'n2', w, - h, - 1 );
-			setPoint( 'n3', - w, h, - 1 );
-			setPoint( 'n4', w, h, - 1 );
-
-			// far
-
-			setPoint( 'f1', - w, - h, 1 );
-			setPoint( 'f2', w, - h, 1 );
-			setPoint( 'f3', - w, h, 1 );
-			setPoint( 'f4', w, h, 1 );
-
-			// up
-
-			setPoint( 'u1', w * 0.7, h * 1.1, - 1 );
-			setPoint( 'u2', - w * 0.7, h * 1.1, - 1 );
-			setPoint( 'u3', 0, h * 2, - 1 );
-
-			// cross
-
-			setPoint( 'cf1', - w, 0, 1 );
-			setPoint( 'cf2', w, 0, 1 );
-			setPoint( 'cf3', 0, - h, 1 );
-			setPoint( 'cf4', 0, h, 1 );
-
-			setPoint( 'cn1', - w, 0, - 1 );
-			setPoint( 'cn2', w, 0, - 1 );
-			setPoint( 'cn3', 0, - h, - 1 );
-			setPoint( 'cn4', 0, h, - 1 );
-
-			geometry.getAttribute( 'position' ).needsUpdate = true;
-
-		};
-
-	}();
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 * @author Mugen87 / http://github.com/Mugen87
-	 */
-
-	function BoxHelper( object, color ) {
-
-		this.object = object;
-
-		if ( color === undefined ) color = 0xffff00;
-
-		var indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
-		var positions = new Float32Array( 8 * 3 );
-
-		var geometry = new BufferGeometry();
-		geometry.setIndex( new BufferAttribute( indices, 1 ) );
-		geometry.addAttribute( 'position', new BufferAttribute( positions, 3 ) );
-
-		LineSegments.call( this, geometry, new LineBasicMaterial( { color: color } ) );
-
-		this.matrixAutoUpdate = false;
-
-		this.update();
-
-	}
-
-	BoxHelper.prototype = Object.create( LineSegments.prototype );
-	BoxHelper.prototype.constructor = BoxHelper;
-
-	BoxHelper.prototype.update = ( function () {
-
-		var box = new Box3();
-
-		return function update( object ) {
-
-			if ( object !== undefined ) {
-
-				console.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );
-
-			}
-
-			if ( this.object !== undefined ) {
-
-				box.setFromObject( this.object );
-
-			}
-
-			if ( box.isEmpty() ) return;
-
-			var min = box.min;
-			var max = box.max;
-
-			/*
-			  5____4
-			1/___0/|
-			| 6__|_7
-			2/___3/
-
-			0: max.x, max.y, max.z
-			1: min.x, max.y, max.z
-			2: min.x, min.y, max.z
-			3: max.x, min.y, max.z
-			4: max.x, max.y, min.z
-			5: min.x, max.y, min.z
-			6: min.x, min.y, min.z
-			7: max.x, min.y, min.z
-			*/
-
-			var position = this.geometry.attributes.position;
-			var array = position.array;
-
-			array[ 0 ] = max.x; array[ 1 ] = max.y; array[ 2 ] = max.z;
-			array[ 3 ] = min.x; array[ 4 ] = max.y; array[ 5 ] = max.z;
-			array[ 6 ] = min.x; array[ 7 ] = min.y; array[ 8 ] = max.z;
-			array[ 9 ] = max.x; array[ 10 ] = min.y; array[ 11 ] = max.z;
-			array[ 12 ] = max.x; array[ 13 ] = max.y; array[ 14 ] = min.z;
-			array[ 15 ] = min.x; array[ 16 ] = max.y; array[ 17 ] = min.z;
-			array[ 18 ] = min.x; array[ 19 ] = min.y; array[ 20 ] = min.z;
-			array[ 21 ] = max.x; array[ 22 ] = min.y; array[ 23 ] = min.z;
-
-			position.needsUpdate = true;
-
-			this.geometry.computeBoundingSphere();
-
-		};
-
-	} )();
-
-	BoxHelper.prototype.setFromObject = function ( object ) {
-
-		this.object = object;
-		this.update();
-
-		return this;
-
-	};
-
-	/**
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
-
-	function Box3Helper( box, hex ) {
-
-		this.type = 'Box3Helper';
-
-		this.box = box;
-
-		var color = ( hex !== undefined ) ? hex : 0xffff00;
-
-		var indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
-
-		var positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];
-
-		var geometry = new BufferGeometry();
-
-		geometry.setIndex( new BufferAttribute( indices, 1 ) );
-
-		geometry.addAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
-
-		LineSegments.call( this, geometry, new LineBasicMaterial( { color: color } ) );
-
-		this.geometry.computeBoundingSphere();
-
-	}
-
-	Box3Helper.prototype = Object.create( LineSegments.prototype );
-	Box3Helper.prototype.constructor = Box3Helper;
-
-	Box3Helper.prototype.updateMatrixWorld = function ( force ) {
-
-		var box = this.box;
-
-		if ( box.isEmpty() ) return;
-
-		box.getCenter( this.position );
-
-		box.getSize( this.scale );
-
-		this.scale.multiplyScalar( 0.5 );
-
-		Object3D.prototype.updateMatrixWorld.call( this, force );
-
-	};
-
-	/**
-	 * @author WestLangley / http://github.com/WestLangley
-	 */
-
-	function PlaneHelper( plane, size, hex ) {
-
-		this.type = 'PlaneHelper';
-
-		this.plane = plane;
-
-		this.size = ( size === undefined ) ? 1 : size;
-
-		var color = ( hex !== undefined ) ? hex : 0xffff00;
-
-		var positions = [ 1, - 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0 ];
-
-		var geometry = new BufferGeometry();
-		geometry.addAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
-		geometry.computeBoundingSphere();
-
-		Line.call( this, geometry, new LineBasicMaterial( { color: color } ) );
-
-		//
-
-		var positions2 = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, - 1, 1, 1, - 1, 1 ];
-
-		var geometry2 = new BufferGeometry();
-		geometry2.addAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );
-		geometry2.computeBoundingSphere();
-
-		this.add( new Mesh( geometry2, new MeshBasicMaterial( { color: color, opacity: 0.2, transparent: true, depthWrite: false } ) ) );
-
-	}
-
-	PlaneHelper.prototype = Object.create( Line.prototype );
-	PlaneHelper.prototype.constructor = PlaneHelper;
-
-	PlaneHelper.prototype.updateMatrixWorld = function ( force ) {
-
-		var scale = - this.plane.constant;
-
-		if ( Math.abs( scale ) < 1e-8 ) scale = 1e-8; // sign does not matter
-
-		this.scale.set( 0.5 * this.size, 0.5 * this.size, scale );
-
-		this.lookAt( this.plane.normal );
-
-		Object3D.prototype.updateMatrixWorld.call( this, force );
-
-	};
-
-	/**
-	 * @author WestLangley / http://github.com/WestLangley
-	 * @author zz85 / http://github.com/zz85
-	 * @author bhouston / http://clara.io
-	 *
-	 * Creates an arrow for visualizing directions
-	 *
-	 * Parameters:
-	 *  dir - Vector3
-	 *  origin - Vector3
-	 *  length - Number
-	 *  color - color in hex value
-	 *  headLength - Number
-	 *  headWidth - Number
-	 */
-
-	var lineGeometry;
-	var coneGeometry;
-
-	function ArrowHelper( dir, origin, length, color, headLength, headWidth ) {
-
-		// dir is assumed to be normalized
-
-		Object3D.call( this );
-
-		if ( color === undefined ) color = 0xffff00;
-		if ( length === undefined ) length = 1;
-		if ( headLength === undefined ) headLength = 0.2 * length;
-		if ( headWidth === undefined ) headWidth = 0.2 * headLength;
-
-		if ( lineGeometry === undefined ) {
-
-			lineGeometry = new BufferGeometry();
-			lineGeometry.addAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 1, 0 ], 3 ) );
-
-			coneGeometry = new CylinderBufferGeometry( 0, 0.5, 1, 5, 1 );
-			coneGeometry.translate( 0, - 0.5, 0 );
-
-		}
-
-		this.position.copy( origin );
-
-		this.line = new Line( lineGeometry, new LineBasicMaterial( { color: color } ) );
-		this.line.matrixAutoUpdate = false;
-		this.add( this.line );
-
-		this.cone = new Mesh( coneGeometry, new MeshBasicMaterial( { color: color } ) );
-		this.cone.matrixAutoUpdate = false;
-		this.add( this.cone );
-
-		this.setDirection( dir );
-		this.setLength( length, headLength, headWidth );
-
-	}
-
-	ArrowHelper.prototype = Object.create( Object3D.prototype );
-	ArrowHelper.prototype.constructor = ArrowHelper;
-
-	ArrowHelper.prototype.setDirection = ( function () {
-
-		var axis = new Vector3();
-		var radians;
-
-		return function setDirection( dir ) {
-
-			// dir is assumed to be normalized
-
-			if ( dir.y > 0.99999 ) {
-
-				this.quaternion.set( 0, 0, 0, 1 );
-
-			} else if ( dir.y < - 0.99999 ) {
-
-				this.quaternion.set( 1, 0, 0, 0 );
-
-			} else {
-
-				axis.set( dir.z, 0, - dir.x ).normalize();
-
-				radians = Math.acos( dir.y );
-
-				this.quaternion.setFromAxisAngle( axis, radians );
-
-			}
-
-		};
-
-	}() );
-
-	ArrowHelper.prototype.setLength = function ( length, headLength, headWidth ) {
-
-		if ( headLength === undefined ) headLength = 0.2 * length;
-		if ( headWidth === undefined ) headWidth = 0.2 * headLength;
-
-		this.line.scale.set( 1, Math.max( 0, length - headLength ), 1 );
-		this.line.updateMatrix();
-
-		this.cone.scale.set( headWidth, headLength, headWidth );
-		this.cone.position.y = length;
-		this.cone.updateMatrix();
-
-	};
-
-	ArrowHelper.prototype.setColor = function ( color ) {
-
-		this.line.material.color.copy( color );
-		this.cone.material.color.copy( color );
-
-	};
-
-	/**
-	 * @author sroucheray / http://sroucheray.org/
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function AxesHelper( size ) {
-
-		size = size || 1;
-
-		var vertices = [
-			0, 0, 0,	size, 0, 0,
-			0, 0, 0,	0, size, 0,
-			0, 0, 0,	0, 0, size
-		];
-
-		var colors = [
-			1, 0, 0,	1, 0.6, 0,
-			0, 1, 0,	0.6, 1, 0,
-			0, 0, 1,	0, 0.6, 1
-		];
-
-		var geometry = new BufferGeometry();
-		geometry.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
-		geometry.addAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
-
-		var material = new LineBasicMaterial( { vertexColors: VertexColors } );
-
-		LineSegments.call( this, geometry, material );
-
-	}
-
-	AxesHelper.prototype = Object.create( LineSegments.prototype );
-	AxesHelper.prototype.constructor = AxesHelper;
-
-	/**
-	 * @author mrdoob / http://mrdoob.com/
-	 */
-
-	function Face4( a, b, c, d, normal, color, materialIndex ) {
-
-		console.warn( 'THREE.Face4 has been removed. A THREE.Face3 will be created instead.' );
-		return new Face3( a, b, c, normal, color, materialIndex );
-
-	}
-
-	var LineStrip = 0;
-
-	var LinePieces = 1;
-
-	function MeshFaceMaterial( materials ) {
-
-		console.warn( 'THREE.MeshFaceMaterial has been removed. Use an Array instead.' );
-		return materials;
-
-	}
-
-	function MultiMaterial( materials ) {
-
-		if ( materials === undefined ) materials = [];
-
-		console.warn( 'THREE.MultiMaterial has been removed. Use an Array instead.' );
-		materials.isMultiMaterial = true;
-		materials.materials = materials;
-		materials.clone = function () {
-
-			return materials.slice();
-
-		};
-		return materials;
-
-	}
-
-	function PointCloud( geometry, material ) {
-
-		console.warn( 'THREE.PointCloud has been renamed to THREE.Points.' );
-		return new Points( geometry, material );
-
-	}
-
-	function Particle( material ) {
-
-		console.warn( 'THREE.Particle has been renamed to THREE.Sprite.' );
-		return new Sprite( material );
-
-	}
-
-	function ParticleSystem( geometry, material ) {
-
-		console.warn( 'THREE.ParticleSystem has been renamed to THREE.Points.' );
-		return new Points( geometry, material );
-
-	}
-
-	function PointCloudMaterial( parameters ) {
-
-		console.warn( 'THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial.' );
-		return new PointsMaterial( parameters );
-
-	}
-
-	function ParticleBasicMaterial( parameters ) {
-
-		console.warn( 'THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial.' );
-		return new PointsMaterial( parameters );
-
-	}
-
-	function ParticleSystemMaterial( parameters ) {
-
-		console.warn( 'THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial.' );
-		return new PointsMaterial( parameters );
-
-	}
-
-	function Vertex( x, y, z ) {
-
-		console.warn( 'THREE.Vertex has been removed. Use THREE.Vector3 instead.' );
-		return new Vector3( x, y, z );
-
-	}
-
-	//
-
-	function DynamicBufferAttribute( array, itemSize ) {
-
-		console.warn( 'THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setDynamic( true ) instead.' );
-		return new BufferAttribute( array, itemSize ).setDynamic( true );
-
-	}
-
-	function Int8Attribute( array, itemSize ) {
-
-		console.warn( 'THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead.' );
-		return new Int8BufferAttribute( array, itemSize );
-
-	}
-
-	function Uint8Attribute( array, itemSize ) {
-
-		console.warn( 'THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead.' );
-		return new Uint8BufferAttribute( array, itemSize );
-
-	}
-
-	function Uint8ClampedAttribute( array, itemSize ) {
-
-		console.warn( 'THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead.' );
-		return new Uint8ClampedBufferAttribute( array, itemSize );
-
-	}
-
-	function Int16Attribute( array, itemSize ) {
-
-		console.warn( 'THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead.' );
-		return new Int16BufferAttribute( array, itemSize );
-
-	}
-
-	function Uint16Attribute( array, itemSize ) {
-
-		console.warn( 'THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead.' );
-		return new Uint16BufferAttribute( array, itemSize );
-
-	}
-
-	function Int32Attribute( array, itemSize ) {
-
-		console.warn( 'THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead.' );
-		return new Int32BufferAttribute( array, itemSize );
-
-	}
-
-	function Uint32Attribute( array, itemSize ) {
-
-		console.warn( 'THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead.' );
-		return new Uint32BufferAttribute( array, itemSize );
-
-	}
-
-	function Float32Attribute( array, itemSize ) {
-
-		console.warn( 'THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead.' );
-		return new Float32BufferAttribute( array, itemSize );
-
-	}
-
-	function Float64Attribute( array, itemSize ) {
-
-		console.warn( 'THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead.' );
-		return new Float64BufferAttribute( array, itemSize );
-
-	}
-
-	//
-
-	Curve.create = function ( construct, getPoint ) {
-
-		console.log( 'THREE.Curve.create() has been deprecated' );
-
-		construct.prototype = Object.create( Curve.prototype );
-		construct.prototype.constructor = construct;
-		construct.prototype.getPoint = getPoint;
-
-		return construct;
-
-	};
-
-	//
-
-	Object.assign( CurvePath.prototype, {
-
-		createPointsGeometry: function ( divisions ) {
-
-			console.warn( 'THREE.CurvePath: .createPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );
-
-			// generate geometry from path points (for Line or Points objects)
-
-			var pts = this.getPoints( divisions );
-			return this.createGeometry( pts );
-
-		},
-
-		createSpacedPointsGeometry: function ( divisions ) {
-
-			console.warn( 'THREE.CurvePath: .createSpacedPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );
-
-			// generate geometry from equidistant sampling along the path
-
-			var pts = this.getSpacedPoints( divisions );
-			return this.createGeometry( pts );
-
-		},
-
-		createGeometry: function ( points ) {
-
-			console.warn( 'THREE.CurvePath: .createGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );
-
-			var geometry = new Geometry();
-
-			for ( var i = 0, l = points.length; i < l; i ++ ) {
-
-				var point = points[ i ];
-				geometry.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );
-
-			}
-
-			return geometry;
-
-		}
-
-	} );
-
-	//
-
-	Object.assign( Path.prototype, {
-
-		fromPoints: function ( points ) {
-
-			console.warn( 'THREE.Path: .fromPoints() has been renamed to .setFromPoints().' );
-			this.setFromPoints( points );
-
-		}
-
-	} );
-
-	//
-
-	function ClosedSplineCurve3( points ) {
-
-		console.warn( 'THREE.ClosedSplineCurve3 has been deprecated. Use THREE.CatmullRomCurve3 instead.' );
-
-		CatmullRomCurve3.call( this, points );
-		this.type = 'catmullrom';
-		this.closed = true;
-
-	}
-
-	ClosedSplineCurve3.prototype = Object.create( CatmullRomCurve3.prototype );
-
-	//
-
-	function SplineCurve3( points ) {
-
-		console.warn( 'THREE.SplineCurve3 has been deprecated. Use THREE.CatmullRomCurve3 instead.' );
-
-		CatmullRomCurve3.call( this, points );
-		this.type = 'catmullrom';
-
-	}
-
-	SplineCurve3.prototype = Object.create( CatmullRomCurve3.prototype );
-
-	//
-
-	function Spline( points ) {
-
-		console.warn( 'THREE.Spline has been removed. Use THREE.CatmullRomCurve3 instead.' );
-
-		CatmullRomCurve3.call( this, points );
-		this.type = 'catmullrom';
-
-	}
-
-	Spline.prototype = Object.create( CatmullRomCurve3.prototype );
-
-	Object.assign( Spline.prototype, {
-
-		initFromArray: function ( /* a */ ) {
-
-			console.error( 'THREE.Spline: .initFromArray() has been removed.' );
-
-		},
-		getControlPointsArray: function ( /* optionalTarget */ ) {
-
-			console.error( 'THREE.Spline: .getControlPointsArray() has been removed.' );
-
-		},
-		reparametrizeByArcLength: function ( /* samplingCoef */ ) {
-
-			console.error( 'THREE.Spline: .reparametrizeByArcLength() has been removed.' );
-
-		}
-
-	} );
-
-	//
-
-	function AxisHelper( size ) {
-
-		console.warn( 'THREE.AxisHelper has been renamed to THREE.AxesHelper.' );
-		return new AxesHelper( size );
-
-	}
-
-	function BoundingBoxHelper( object, color ) {
-
-		console.warn( 'THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead.' );
-		return new BoxHelper( object, color );
-
-	}
-
-	function EdgesHelper( object, hex ) {
-
-		console.warn( 'THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead.' );
-		return new LineSegments( new EdgesGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );
-
-	}
-
-	GridHelper.prototype.setColors = function () {
-
-		console.error( 'THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.' );
-
-	};
-
-	SkeletonHelper.prototype.update = function () {
-
-		console.error( 'THREE.SkeletonHelper: update() no longer needs to be called.' );
-
-	};
-
-	function WireframeHelper( object, hex ) {
-
-		console.warn( 'THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead.' );
-		return new LineSegments( new WireframeGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );
-
-	}
-
-	//
-
-	Object.assign( Loader.prototype, {
-
-		extractUrlBase: function ( url ) {
-
-			console.warn( 'THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead.' );
-			return LoaderUtils.extractUrlBase( url );
-
-		}
-
-	} );
-
-	function XHRLoader( manager ) {
-
-		console.warn( 'THREE.XHRLoader has been renamed to THREE.FileLoader.' );
-		return new FileLoader( manager );
-
-	}
-
-	function BinaryTextureLoader( manager ) {
-
-		console.warn( 'THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader.' );
-		return new DataTextureLoader( manager );
-
-	}
-
-	//
-
-	Object.assign( Box2.prototype, {
-
-		center: function ( optionalTarget ) {
-
-			console.warn( 'THREE.Box2: .center() has been renamed to .getCenter().' );
-			return this.getCenter( optionalTarget );
-
-		},
-		empty: function () {
-
-			console.warn( 'THREE.Box2: .empty() has been renamed to .isEmpty().' );
-			return this.isEmpty();
-
-		},
-		isIntersectionBox: function ( box ) {
-
-			console.warn( 'THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox().' );
-			return this.intersectsBox( box );
-
-		},
-		size: function ( optionalTarget ) {
-
-			console.warn( 'THREE.Box2: .size() has been renamed to .getSize().' );
-			return this.getSize( optionalTarget );
-
-		}
-	} );
-
-	Object.assign( Box3.prototype, {
-
-		center: function ( optionalTarget ) {
-
-			console.warn( 'THREE.Box3: .center() has been renamed to .getCenter().' );
-			return this.getCenter( optionalTarget );
-
-		},
-		empty: function () {
-
-			console.warn( 'THREE.Box3: .empty() has been renamed to .isEmpty().' );
-			return this.isEmpty();
-
-		},
-		isIntersectionBox: function ( box ) {
-
-			console.warn( 'THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox().' );
-			return this.intersectsBox( box );
-
-		},
-		isIntersectionSphere: function ( sphere ) {
-
-			console.warn( 'THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere().' );
-			return this.intersectsSphere( sphere );
-
-		},
-		size: function ( optionalTarget ) {
-
-			console.warn( 'THREE.Box3: .size() has been renamed to .getSize().' );
-			return this.getSize( optionalTarget );
-
-		}
-	} );
-
-	Line3.prototype.center = function ( optionalTarget ) {
-
-		console.warn( 'THREE.Line3: .center() has been renamed to .getCenter().' );
-		return this.getCenter( optionalTarget );
-
-	};
-
-	Object.assign( _Math, {
-
-		random16: function () {
-
-			console.warn( 'THREE.Math: .random16() has been deprecated. Use Math.random() instead.' );
-			return Math.random();
-
-		},
-
-		nearestPowerOfTwo: function ( value ) {
-
-			console.warn( 'THREE.Math: .nearestPowerOfTwo() has been renamed to .floorPowerOfTwo().' );
-			return _Math.floorPowerOfTwo( value );
-
-		},
-
-		nextPowerOfTwo: function ( value ) {
-
-			console.warn( 'THREE.Math: .nextPowerOfTwo() has been renamed to .ceilPowerOfTwo().' );
-			return _Math.ceilPowerOfTwo( value );
-
-		}
-
-	} );
-
-	Object.assign( Matrix3.prototype, {
-
-		flattenToArrayOffset: function ( array, offset ) {
-
-			console.warn( "THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead." );
-			return this.toArray( array, offset );
-
-		},
-		multiplyVector3: function ( vector ) {
-
-			console.warn( 'THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.' );
-			return vector.applyMatrix3( this );
-
-		},
-		multiplyVector3Array: function ( /* a */ ) {
-
-			console.error( 'THREE.Matrix3: .multiplyVector3Array() has been removed.' );
-
-		},
-		applyToBuffer: function ( buffer /*, offset, length */ ) {
-
-			console.warn( 'THREE.Matrix3: .applyToBuffer() has been removed. Use matrix.applyToBufferAttribute( attribute ) instead.' );
-			return this.applyToBufferAttribute( buffer );
-
-		},
-		applyToVector3Array: function ( /* array, offset, length */ ) {
-
-			console.error( 'THREE.Matrix3: .applyToVector3Array() has been removed.' );
-
-		}
-
-	} );
-
-	Object.assign( Matrix4.prototype, {
-
-		extractPosition: function ( m ) {
-
-			console.warn( 'THREE.Matrix4: .extractPosition() has been renamed to .copyPosition().' );
-			return this.copyPosition( m );
-
-		},
-		flattenToArrayOffset: function ( array, offset ) {
-
-			console.warn( "THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead." );
-			return this.toArray( array, offset );
-
-		},
-		getPosition: function () {
-
-			var v1;
-
-			return function getPosition() {
-
-				if ( v1 === undefined ) v1 = new Vector3();
-				console.warn( 'THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.' );
-				return v1.setFromMatrixColumn( this, 3 );
-
-			};
-
-		}(),
-		setRotationFromQuaternion: function ( q ) {
-
-			console.warn( 'THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion().' );
-			return this.makeRotationFromQuaternion( q );
-
-		},
-		multiplyToArray: function () {
-
-			console.warn( 'THREE.Matrix4: .multiplyToArray() has been removed.' );
-
-		},
-		multiplyVector3: function ( vector ) {
-
-			console.warn( 'THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
-			return vector.applyMatrix4( this );
-
-		},
-		multiplyVector4: function ( vector ) {
-
-			console.warn( 'THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
-			return vector.applyMatrix4( this );
-
-		},
-		multiplyVector3Array: function ( /* a */ ) {
-
-			console.error( 'THREE.Matrix4: .multiplyVector3Array() has been removed.' );
-
-		},
-		rotateAxis: function ( v ) {
-
-			console.warn( 'THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead.' );
-			v.transformDirection( this );
-
-		},
-		crossVector: function ( vector ) {
-
-			console.warn( 'THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
-			return vector.applyMatrix4( this );
-
-		},
-		translate: function () {
-
-			console.error( 'THREE.Matrix4: .translate() has been removed.' );
-
-		},
-		rotateX: function () {
-
-			console.error( 'THREE.Matrix4: .rotateX() has been removed.' );
-
-		},
-		rotateY: function () {
-
-			console.error( 'THREE.Matrix4: .rotateY() has been removed.' );
-
-		},
-		rotateZ: function () {
-
-			console.error( 'THREE.Matrix4: .rotateZ() has been removed.' );
-
-		},
-		rotateByAxis: function () {
-
-			console.error( 'THREE.Matrix4: .rotateByAxis() has been removed.' );
-
-		},
-		applyToBuffer: function ( buffer /*, offset, length */ ) {
-
-			console.warn( 'THREE.Matrix4: .applyToBuffer() has been removed. Use matrix.applyToBufferAttribute( attribute ) instead.' );
-			return this.applyToBufferAttribute( buffer );
-
-		},
-		applyToVector3Array: function ( /* array, offset, length */ ) {
-
-			console.error( 'THREE.Matrix4: .applyToVector3Array() has been removed.' );
-
-		},
-		makeFrustum: function ( left, right, bottom, top, near, far ) {
-
-			console.warn( 'THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead.' );
-			return this.makePerspective( left, right, top, bottom, near, far );
-
-		}
-
-	} );
-
-	Plane.prototype.isIntersectionLine = function ( line ) {
-
-		console.warn( 'THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine().' );
-		return this.intersectsLine( line );
-
-	};
-
-	Quaternion.prototype.multiplyVector3 = function ( vector ) {
-
-		console.warn( 'THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.' );
-		return vector.applyQuaternion( this );
-
-	};
-
-	Object.assign( Ray.prototype, {
-
-		isIntersectionBox: function ( box ) {
-
-			console.warn( 'THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox().' );
-			return this.intersectsBox( box );
-
-		},
-		isIntersectionPlane: function ( plane ) {
-
-			console.warn( 'THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane().' );
-			return this.intersectsPlane( plane );
-
-		},
-		isIntersectionSphere: function ( sphere ) {
-
-			console.warn( 'THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere().' );
-			return this.intersectsSphere( sphere );
-
-		}
-
-	} );
-
-	Object.assign( Triangle.prototype, {
-
-		area: function () {
-
-			console.warn( 'THREE.Triangle: .area() has been renamed to .getArea().' );
-			return this.getArea();
-
-		},
-		barycoordFromPoint: function ( point, target ) {
-
-			console.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );
-			return this.getBarycoord( point, target );
-
-		},
-		midpoint: function ( target ) {
-
-			console.warn( 'THREE.Triangle: .midpoint() has been renamed to .getMidpoint().' );
-			return this.getMidpoint( target );
-
-		},
-		normal: function ( target ) {
-
-			console.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );
-			return this.getNormal( target );
-
-		},
-		plane: function ( target ) {
-
-			console.warn( 'THREE.Triangle: .plane() has been renamed to .getPlane().' );
-			return this.getPlane( target );
-
-		}
-
-	} );
-
-	Object.assign( Triangle, {
-
-		barycoordFromPoint: function ( point, a, b, c, target ) {
-
-			console.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );
-			return Triangle.getBarycoord( point, a, b, c, target );
-
-		},
-		normal: function ( a, b, c, target ) {
-
-			console.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );
-			return Triangle.getNormal( a, b, c, target );
-
-		}
-
-	} );
-
-	Object.assign( Shape.prototype, {
-
-		extractAllPoints: function ( divisions ) {
-
-			console.warn( 'THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead.' );
-			return this.extractPoints( divisions );
-
-		},
-		extrude: function ( options ) {
-
-			console.warn( 'THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead.' );
-			return new ExtrudeGeometry( this, options );
-
-		},
-		makeGeometry: function ( options ) {
-
-			console.warn( 'THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead.' );
-			return new ShapeGeometry( this, options );
-
-		}
-
-	} );
-
-	Object.assign( Vector2.prototype, {
-
-		fromAttribute: function ( attribute, index, offset ) {
-
-			console.warn( 'THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute().' );
-			return this.fromBufferAttribute( attribute, index, offset );
-
-		},
-		distanceToManhattan: function ( v ) {
-
-			console.warn( 'THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );
-			return this.manhattanDistanceTo( v );
-
-		},
-		lengthManhattan: function () {
-
-			console.warn( 'THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength().' );
-			return this.manhattanLength();
-
-		}
-
-	} );
-
-	Object.assign( Vector3.prototype, {
-
-		setEulerFromRotationMatrix: function () {
-
-			console.error( 'THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.' );
-
-		},
-		setEulerFromQuaternion: function () {
-
-			console.error( 'THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.' );
-
-		},
-		getPositionFromMatrix: function ( m ) {
-
-			console.warn( 'THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition().' );
-			return this.setFromMatrixPosition( m );
-
-		},
-		getScaleFromMatrix: function ( m ) {
-
-			console.warn( 'THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale().' );
-			return this.setFromMatrixScale( m );
-
-		},
-		getColumnFromMatrix: function ( index, matrix ) {
-
-			console.warn( 'THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn().' );
-			return this.setFromMatrixColumn( matrix, index );
-
-		},
-		applyProjection: function ( m ) {
-
-			console.warn( 'THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead.' );
-			return this.applyMatrix4( m );
-
-		},
-		fromAttribute: function ( attribute, index, offset ) {
-
-			console.warn( 'THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute().' );
-			return this.fromBufferAttribute( attribute, index, offset );
-
-		},
-		distanceToManhattan: function ( v ) {
-
-			console.warn( 'THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );
-			return this.manhattanDistanceTo( v );
-
-		},
-		lengthManhattan: function () {
-
-			console.warn( 'THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength().' );
-			return this.manhattanLength();
-
-		}
-
-	} );
-
-	Object.assign( Vector4.prototype, {
-
-		fromAttribute: function ( attribute, index, offset ) {
-
-			console.warn( 'THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute().' );
-			return this.fromBufferAttribute( attribute, index, offset );
-
-		},
-		lengthManhattan: function () {
-
-			console.warn( 'THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength().' );
-			return this.manhattanLength();
-
-		}
-
-	} );
-
-	//
-
-	Object.assign( Geometry.prototype, {
-
-		computeTangents: function () {
-
-			console.error( 'THREE.Geometry: .computeTangents() has been removed.' );
-
-		},
-		computeLineDistances: function () {
-
-			console.error( 'THREE.Geometry: .computeLineDistances() has been removed. Use THREE.Line.computeLineDistances() instead.' );
-
-		}
-
-	} );
-
-	Object.assign( Object3D.prototype, {
-
-		getChildByName: function ( name ) {
-
-			console.warn( 'THREE.Object3D: .getChildByName() has been renamed to .getObjectByName().' );
-			return this.getObjectByName( name );
-
-		},
-		renderDepth: function () {
-
-			console.warn( 'THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.' );
-
-		},
-		translate: function ( distance, axis ) {
-
-			console.warn( 'THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead.' );
-			return this.translateOnAxis( axis, distance );
-
-		},
-		getWorldRotation: function () {
-
-			console.error( 'THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.' );
-
-		}
-
-	} );
-
-	Object.defineProperties( Object3D.prototype, {
-
-		eulerOrder: {
-			get: function () {
-
-				console.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );
-				return this.rotation.order;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );
-				this.rotation.order = value;
-
-			}
-		},
-		useQuaternion: {
-			get: function () {
-
-				console.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );
-
-			},
-			set: function () {
-
-				console.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );
-
-			}
-		}
-
-	} );
-
-	Object.defineProperties( LOD.prototype, {
-
-		objects: {
-			get: function () {
-
-				console.warn( 'THREE.LOD: .objects has been renamed to .levels.' );
-				return this.levels;
-
-			}
-		}
-
-	} );
-
-	Object.defineProperty( Skeleton.prototype, 'useVertexTexture', {
-
-		get: function () {
-
-			console.warn( 'THREE.Skeleton: useVertexTexture has been removed.' );
-
-		},
-		set: function () {
-
-			console.warn( 'THREE.Skeleton: useVertexTexture has been removed.' );
-
-		}
-
-	} );
-
-	Object.defineProperty( Curve.prototype, '__arcLengthDivisions', {
-
-		get: function () {
-
-			console.warn( 'THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.' );
-			return this.arcLengthDivisions;
-
-		},
-		set: function ( value ) {
-
-			console.warn( 'THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.' );
-			this.arcLengthDivisions = value;
-
-		}
-
-	} );
-
-	//
-
-	PerspectiveCamera.prototype.setLens = function ( focalLength, filmGauge ) {
-
-		console.warn( "THREE.PerspectiveCamera.setLens is deprecated. " +
-				"Use .setFocalLength and .filmGauge for a photographic setup." );
-
-		if ( filmGauge !== undefined ) this.filmGauge = filmGauge;
-		this.setFocalLength( focalLength );
-
-	};
-
-	//
-
-	Object.defineProperties( Light.prototype, {
-		onlyShadow: {
-			set: function () {
-
-				console.warn( 'THREE.Light: .onlyShadow has been removed.' );
-
-			}
-		},
-		shadowCameraFov: {
-			set: function ( value ) {
-
-				console.warn( 'THREE.Light: .shadowCameraFov is now .shadow.camera.fov.' );
-				this.shadow.camera.fov = value;
-
-			}
-		},
-		shadowCameraLeft: {
-			set: function ( value ) {
-
-				console.warn( 'THREE.Light: .shadowCameraLeft is now .shadow.camera.left.' );
-				this.shadow.camera.left = value;
-
-			}
-		},
-		shadowCameraRight: {
-			set: function ( value ) {
-
-				console.warn( 'THREE.Light: .shadowCameraRight is now .shadow.camera.right.' );
-				this.shadow.camera.right = value;
-
-			}
-		},
-		shadowCameraTop: {
-			set: function ( value ) {
-
-				console.warn( 'THREE.Light: .shadowCameraTop is now .shadow.camera.top.' );
-				this.shadow.camera.top = value;
-
-			}
-		},
-		shadowCameraBottom: {
-			set: function ( value ) {
-
-				console.warn( 'THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom.' );
-				this.shadow.camera.bottom = value;
-
-			}
-		},
-		shadowCameraNear: {
-			set: function ( value ) {
-
-				console.warn( 'THREE.Light: .shadowCameraNear is now .shadow.camera.near.' );
-				this.shadow.camera.near = value;
-
-			}
-		},
-		shadowCameraFar: {
-			set: function ( value ) {
-
-				console.warn( 'THREE.Light: .shadowCameraFar is now .shadow.camera.far.' );
-				this.shadow.camera.far = value;
-
-			}
-		},
-		shadowCameraVisible: {
-			set: function () {
-
-				console.warn( 'THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.' );
-
-			}
-		},
-		shadowBias: {
-			set: function ( value ) {
-
-				console.warn( 'THREE.Light: .shadowBias is now .shadow.bias.' );
-				this.shadow.bias = value;
-
-			}
-		},
-		shadowDarkness: {
-			set: function () {
-
-				console.warn( 'THREE.Light: .shadowDarkness has been removed.' );
-
-			}
-		},
-		shadowMapWidth: {
-			set: function ( value ) {
-
-				console.warn( 'THREE.Light: .shadowMapWidth is now .shadow.mapSize.width.' );
-				this.shadow.mapSize.width = value;
-
-			}
-		},
-		shadowMapHeight: {
-			set: function ( value ) {
-
-				console.warn( 'THREE.Light: .shadowMapHeight is now .shadow.mapSize.height.' );
-				this.shadow.mapSize.height = value;
-
-			}
-		}
-	} );
-
-	//
-
-	Object.defineProperties( BufferAttribute.prototype, {
-
-		length: {
-			get: function () {
-
-				console.warn( 'THREE.BufferAttribute: .length has been deprecated. Use .count instead.' );
-				return this.array.length;
-
-			}
-		},
-		copyIndicesArray: function ( /* indices */ ) {
-
-			console.error( 'THREE.BufferAttribute: .copyIndicesArray() has been removed.' );
-
-		}
-
-	} );
-
-	Object.assign( BufferGeometry.prototype, {
-
-		addIndex: function ( index ) {
-
-			console.warn( 'THREE.BufferGeometry: .addIndex() has been renamed to .setIndex().' );
-			this.setIndex( index );
-
-		},
-		addDrawCall: function ( start, count, indexOffset ) {
-
-			if ( indexOffset !== undefined ) {
-
-				console.warn( 'THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset.' );
-
-			}
-			console.warn( 'THREE.BufferGeometry: .addDrawCall() is now .addGroup().' );
-			this.addGroup( start, count );
-
-		},
-		clearDrawCalls: function () {
-
-			console.warn( 'THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups().' );
-			this.clearGroups();
-
-		},
-		computeTangents: function () {
-
-			console.warn( 'THREE.BufferGeometry: .computeTangents() has been removed.' );
-
-		},
-		computeOffsets: function () {
-
-			console.warn( 'THREE.BufferGeometry: .computeOffsets() has been removed.' );
-
-		}
-
-	} );
-
-	Object.defineProperties( BufferGeometry.prototype, {
-
-		drawcalls: {
-			get: function () {
-
-				console.error( 'THREE.BufferGeometry: .drawcalls has been renamed to .groups.' );
-				return this.groups;
-
-			}
-		},
-		offsets: {
-			get: function () {
-
-				console.warn( 'THREE.BufferGeometry: .offsets has been renamed to .groups.' );
-				return this.groups;
-
-			}
-		}
-
-	} );
-
-	//
-
-	Object.defineProperties( Uniform.prototype, {
-
-		dynamic: {
-			set: function () {
-
-				console.warn( 'THREE.Uniform: .dynamic has been removed. Use object.onBeforeRender() instead.' );
-
-			}
-		},
-		onUpdate: {
-			value: function () {
-
-				console.warn( 'THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead.' );
-				return this;
-
-			}
-		}
-
-	} );
-
-	//
-
-	Object.defineProperties( Material.prototype, {
-
-		wrapAround: {
-			get: function () {
-
-				console.warn( 'THREE.Material: .wrapAround has been removed.' );
-
-			},
-			set: function () {
-
-				console.warn( 'THREE.Material: .wrapAround has been removed.' );
-
-			}
-		},
-		wrapRGB: {
-			get: function () {
-
-				console.warn( 'THREE.Material: .wrapRGB has been removed.' );
-				return new Color();
-
-			}
-		},
-
-		shading: {
-			get: function () {
-
-				console.error( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
-				this.flatShading = ( value === FlatShading );
-
-			}
-		}
-
-	} );
-
-	Object.defineProperties( MeshPhongMaterial.prototype, {
-
-		metal: {
-			get: function () {
-
-				console.warn( 'THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead.' );
-				return false;
-
-			},
-			set: function () {
-
-				console.warn( 'THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead' );
-
-			}
-		}
-
-	} );
-
-	Object.defineProperties( ShaderMaterial.prototype, {
-
-		derivatives: {
-			get: function () {
-
-				console.warn( 'THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );
-				return this.extensions.derivatives;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );
-				this.extensions.derivatives = value;
-
-			}
-		}
-
-	} );
-
-	//
-
-	Object.assign( WebGLRenderer.prototype, {
-
-		getCurrentRenderTarget: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget().' );
-			return this.getRenderTarget();
-
-		},
-
-		getMaxAnisotropy: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy().' );
-			return this.capabilities.getMaxAnisotropy();
-
-		},
-
-		getPrecision: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision.' );
-			return this.capabilities.precision;
-
-		},
-
-		resetGLState: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .resetGLState() is now .state.reset().' );
-			return this.state.reset();
-
-		},
-
-		supportsFloatTextures: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( \'OES_texture_float\' ).' );
-			return this.extensions.get( 'OES_texture_float' );
-
-		},
-		supportsHalfFloatTextures: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( \'OES_texture_half_float\' ).' );
-			return this.extensions.get( 'OES_texture_half_float' );
-
-		},
-		supportsStandardDerivatives: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( \'OES_standard_derivatives\' ).' );
-			return this.extensions.get( 'OES_standard_derivatives' );
-
-		},
-		supportsCompressedTextureS3TC: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( \'WEBGL_compressed_texture_s3tc\' ).' );
-			return this.extensions.get( 'WEBGL_compressed_texture_s3tc' );
-
-		},
-		supportsCompressedTexturePVRTC: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( \'WEBGL_compressed_texture_pvrtc\' ).' );
-			return this.extensions.get( 'WEBGL_compressed_texture_pvrtc' );
-
-		},
-		supportsBlendMinMax: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( \'EXT_blend_minmax\' ).' );
-			return this.extensions.get( 'EXT_blend_minmax' );
-
-		},
-		supportsVertexTextures: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures.' );
-			return this.capabilities.vertexTextures;
-
-		},
-		supportsInstancedArrays: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( \'ANGLE_instanced_arrays\' ).' );
-			return this.extensions.get( 'ANGLE_instanced_arrays' );
-
-		},
-		enableScissorTest: function ( boolean ) {
-
-			console.warn( 'THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest().' );
-			this.setScissorTest( boolean );
-
-		},
-		initMaterial: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .initMaterial() has been removed.' );
-
-		},
-		addPrePlugin: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .addPrePlugin() has been removed.' );
-
-		},
-		addPostPlugin: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .addPostPlugin() has been removed.' );
-
-		},
-		updateShadowMap: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .updateShadowMap() has been removed.' );
-
-		},
-		setFaceCulling: function () {
-
-			console.warn( 'THREE.WebGLRenderer: .setFaceCulling() has been removed.' );
-
-		}
-
-	} );
-
-	Object.defineProperties( WebGLRenderer.prototype, {
-
-		shadowMapEnabled: {
-			get: function () {
-
-				return this.shadowMap.enabled;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled.' );
-				this.shadowMap.enabled = value;
-
-			}
-		},
-		shadowMapType: {
-			get: function () {
-
-				return this.shadowMap.type;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type.' );
-				this.shadowMap.type = value;
-
-			}
-		},
-		shadowMapCullFace: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );
-				return undefined;
-
-			},
-			set: function ( /* value */ ) {
-
-				console.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );
-
-			}
-		}
-	} );
-
-	Object.defineProperties( WebGLShadowMap.prototype, {
-
-		cullFace: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );
-				return undefined;
-
-			},
-			set: function ( /* cullFace */ ) {
-
-				console.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );
-
-			}
-		},
-		renderReverseSided: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );
-				return undefined;
-
-			},
-			set: function () {
-
-				console.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );
-
-			}
-		},
-		renderSingleSided: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );
-				return undefined;
-
-			},
-			set: function () {
-
-				console.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );
-
-			}
-		}
-
-	} );
-
-	//
-
-	Object.defineProperties( WebGLRenderTarget.prototype, {
-
-		wrapS: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );
-				return this.texture.wrapS;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );
-				this.texture.wrapS = value;
-
-			}
-		},
-		wrapT: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );
-				return this.texture.wrapT;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );
-				this.texture.wrapT = value;
-
-			}
-		},
-		magFilter: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );
-				return this.texture.magFilter;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );
-				this.texture.magFilter = value;
-
-			}
-		},
-		minFilter: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );
-				return this.texture.minFilter;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );
-				this.texture.minFilter = value;
-
-			}
-		},
-		anisotropy: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );
-				return this.texture.anisotropy;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );
-				this.texture.anisotropy = value;
-
-			}
-		},
-		offset: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );
-				return this.texture.offset;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );
-				this.texture.offset = value;
-
-			}
-		},
-		repeat: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );
-				return this.texture.repeat;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );
-				this.texture.repeat = value;
-
-			}
-		},
-		format: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );
-				return this.texture.format;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );
-				this.texture.format = value;
-
-			}
-		},
-		type: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );
-				return this.texture.type;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );
-				this.texture.type = value;
-
-			}
-		},
-		generateMipmaps: {
-			get: function () {
-
-				console.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );
-				return this.texture.generateMipmaps;
-
-			},
-			set: function ( value ) {
-
-				console.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );
-				this.texture.generateMipmaps = value;
-
-			}
-		}
-
-	} );
-
-	//
-
-	Object.defineProperties( WebVRManager.prototype, {
-
-		standing: {
-			set: function ( /* value */ ) {
-
-				console.warn( 'THREE.WebVRManager: .standing has been removed.' );
-
-			}
-		}
-
-	} );
-
-	//
-
-	Audio.prototype.load = function ( file ) {
-
-		console.warn( 'THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.' );
-		var scope = this;
-		var audioLoader = new AudioLoader();
-		audioLoader.load( file, function ( buffer ) {
-
-			scope.setBuffer( buffer );
-
-		} );
-		return this;
-
-	};
-
-	AudioAnalyser.prototype.getData = function () {
-
-		console.warn( 'THREE.AudioAnalyser: .getData() is now .getFrequencyData().' );
-		return this.getFrequencyData();
-
-	};
-
-	//
-
-	CubeCamera.prototype.updateCubeMap = function ( renderer, scene ) {
-
-		console.warn( 'THREE.CubeCamera: .updateCubeMap() is now .update().' );
-		return this.update( renderer, scene );
-
-	};
-
-	//
-
-	var GeometryUtils = {
-
-		merge: function ( geometry1, geometry2, materialIndexOffset ) {
-
-			console.warn( 'THREE.GeometryUtils: .merge() has been moved to Geometry. Use geometry.merge( geometry2, matrix, materialIndexOffset ) instead.' );
-			var matrix;
-
-			if ( geometry2.isMesh ) {
-
-				geometry2.matrixAutoUpdate && geometry2.updateMatrix();
-
-				matrix = geometry2.matrix;
-				geometry2 = geometry2.geometry;
-
-			}
-
-			geometry1.merge( geometry2, matrix, materialIndexOffset );
-
-		},
-
-		center: function ( geometry ) {
-
-			console.warn( 'THREE.GeometryUtils: .center() has been moved to Geometry. Use geometry.center() instead.' );
-			return geometry.center();
-
-		}
-
-	};
-
-	var ImageUtils = {
-
-		crossOrigin: undefined,
-
-		loadTexture: function ( url, mapping, onLoad, onError ) {
-
-			console.warn( 'THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.' );
-
-			var loader = new TextureLoader();
-			loader.setCrossOrigin( this.crossOrigin );
-
-			var texture = loader.load( url, onLoad, undefined, onError );
-
-			if ( mapping ) texture.mapping = mapping;
-
-			return texture;
-
-		},
-
-		loadTextureCube: function ( urls, mapping, onLoad, onError ) {
-
-			console.warn( 'THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.' );
-
-			var loader = new CubeTextureLoader();
-			loader.setCrossOrigin( this.crossOrigin );
-
-			var texture = loader.load( urls, onLoad, undefined, onError );
-
-			if ( mapping ) texture.mapping = mapping;
-
-			return texture;
-
-		},
-
-		loadCompressedTexture: function () {
-
-			console.error( 'THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.' );
-
-		},
-
-		loadCompressedTextureCube: function () {
-
-			console.error( 'THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.' );
-
-		}
-
-	};
-
-	//
-
-	function Projector() {
-
-		console.error( 'THREE.Projector has been moved to /examples/js/renderers/Projector.js.' );
-
-		this.projectVector = function ( vector, camera ) {
-
-			console.warn( 'THREE.Projector: .projectVector() is now vector.project().' );
-			vector.project( camera );
-
-		};
-
-		this.unprojectVector = function ( vector, camera ) {
-
-			console.warn( 'THREE.Projector: .unprojectVector() is now vector.unproject().' );
-			vector.unproject( camera );
-
-		};
-
-		this.pickingRay = function () {
-
-			console.error( 'THREE.Projector: .pickingRay() is now raycaster.setFromCamera().' );
-
-		};
-
-	}
-
-	//
-
-	function CanvasRenderer() {
-
-		console.error( 'THREE.CanvasRenderer has been moved to /examples/js/renderers/CanvasRenderer.js' );
-
-		this.domElement = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
-		this.clear = function () {};
-		this.render = function () {};
-		this.setClearColor = function () {};
-		this.setSize = function () {};
-
-	}
-
-	//
-
-	var SceneUtils = {
-
-		createMultiMaterialObject: function ( /* geometry, materials */ ) {
-
-			console.error( 'THREE.SceneUtils has been moved to /examples/js/utils/SceneUtils.js' );
-
-		},
-
-		detach: function ( /* child, parent, scene */ ) {
-
-			console.error( 'THREE.SceneUtils has been moved to /examples/js/utils/SceneUtils.js' );
-
-		},
-
-		attach: function ( /* child, scene, parent */ ) {
-
-			console.error( 'THREE.SceneUtils has been moved to /examples/js/utils/SceneUtils.js' );
-
-		}
-
-	};
-
-	//
-
-	function LensFlare() {
-
-		console.error( 'THREE.LensFlare has been moved to /examples/js/objects/Lensflare.js' );
-
-	}
-
-	exports.WebGLRenderTargetCube = WebGLRenderTargetCube;
-	exports.WebGLRenderTarget = WebGLRenderTarget;
-	exports.WebGLRenderer = WebGLRenderer;
-	exports.ShaderLib = ShaderLib;
-	exports.UniformsLib = UniformsLib;
-	exports.UniformsUtils = UniformsUtils;
-	exports.ShaderChunk = ShaderChunk;
-	exports.FogExp2 = FogExp2;
-	exports.Fog = Fog;
-	exports.Scene = Scene;
-	exports.Sprite = Sprite;
-	exports.LOD = LOD;
-	exports.SkinnedMesh = SkinnedMesh;
-	exports.Skeleton = Skeleton;
-	exports.Bone = Bone;
-	exports.Mesh = Mesh;
-	exports.LineSegments = LineSegments;
-	exports.LineLoop = LineLoop;
-	exports.Line = Line;
-	exports.Points = Points;
-	exports.Group = Group;
-	exports.VideoTexture = VideoTexture;
-	exports.DataTexture = DataTexture;
-	exports.CompressedTexture = CompressedTexture;
-	exports.CubeTexture = CubeTexture;
-	exports.CanvasTexture = CanvasTexture;
-	exports.DepthTexture = DepthTexture;
-	exports.Texture = Texture;
-	exports.CompressedTextureLoader = CompressedTextureLoader;
-	exports.DataTextureLoader = DataTextureLoader;
-	exports.CubeTextureLoader = CubeTextureLoader;
-	exports.TextureLoader = TextureLoader;
-	exports.ObjectLoader = ObjectLoader;
-	exports.MaterialLoader = MaterialLoader;
-	exports.BufferGeometryLoader = BufferGeometryLoader;
-	exports.DefaultLoadingManager = DefaultLoadingManager;
-	exports.LoadingManager = LoadingManager;
-	exports.JSONLoader = JSONLoader;
-	exports.ImageLoader = ImageLoader;
-	exports.ImageBitmapLoader = ImageBitmapLoader;
-	exports.FontLoader = FontLoader;
-	exports.FileLoader = FileLoader;
-	exports.Loader = Loader;
-	exports.LoaderUtils = LoaderUtils;
-	exports.Cache = Cache;
-	exports.AudioLoader = AudioLoader;
-	exports.SpotLightShadow = SpotLightShadow;
-	exports.SpotLight = SpotLight;
-	exports.PointLight = PointLight;
-	exports.RectAreaLight = RectAreaLight;
-	exports.HemisphereLight = HemisphereLight;
-	exports.DirectionalLightShadow = DirectionalLightShadow;
-	exports.DirectionalLight = DirectionalLight;
+	exports.ACESFilmicToneMapping = ACESFilmicToneMapping;
+	exports.AddEquation = AddEquation;
+	exports.AddOperation = AddOperation;
+	exports.AdditiveAnimationBlendMode = AdditiveAnimationBlendMode;
+	exports.AdditiveBlending = AdditiveBlending;
+	exports.AlphaFormat = AlphaFormat;
+	exports.AlwaysDepth = AlwaysDepth;
+	exports.AlwaysStencilFunc = AlwaysStencilFunc;
 	exports.AmbientLight = AmbientLight;
-	exports.LightShadow = LightShadow;
-	exports.Light = Light;
-	exports.StereoCamera = StereoCamera;
-	exports.PerspectiveCamera = PerspectiveCamera;
-	exports.OrthographicCamera = OrthographicCamera;
-	exports.CubeCamera = CubeCamera;
-	exports.ArrayCamera = ArrayCamera;
-	exports.Camera = Camera;
-	exports.AudioListener = AudioListener;
-	exports.PositionalAudio = PositionalAudio;
-	exports.AudioContext = AudioContext;
-	exports.AudioAnalyser = AudioAnalyser;
-	exports.Audio = Audio;
-	exports.VectorKeyframeTrack = VectorKeyframeTrack;
-	exports.StringKeyframeTrack = StringKeyframeTrack;
-	exports.QuaternionKeyframeTrack = QuaternionKeyframeTrack;
-	exports.NumberKeyframeTrack = NumberKeyframeTrack;
-	exports.ColorKeyframeTrack = ColorKeyframeTrack;
-	exports.BooleanKeyframeTrack = BooleanKeyframeTrack;
-	exports.PropertyMixer = PropertyMixer;
-	exports.PropertyBinding = PropertyBinding;
-	exports.KeyframeTrack = KeyframeTrack;
-	exports.AnimationUtils = AnimationUtils;
-	exports.AnimationObjectGroup = AnimationObjectGroup;
-	exports.AnimationMixer = AnimationMixer;
+	exports.AmbientLightProbe = AmbientLightProbe;
 	exports.AnimationClip = AnimationClip;
-	exports.Uniform = Uniform;
-	exports.InstancedBufferGeometry = InstancedBufferGeometry;
-	exports.BufferGeometry = BufferGeometry;
-	exports.Geometry = Geometry;
-	exports.InterleavedBufferAttribute = InterleavedBufferAttribute;
-	exports.InstancedInterleavedBuffer = InstancedInterleavedBuffer;
-	exports.InterleavedBuffer = InterleavedBuffer;
-	exports.InstancedBufferAttribute = InstancedBufferAttribute;
-	exports.Face3 = Face3;
-	exports.Object3D = Object3D;
-	exports.Raycaster = Raycaster;
-	exports.Layers = Layers;
-	exports.EventDispatcher = EventDispatcher;
-	exports.Clock = Clock;
-	exports.QuaternionLinearInterpolant = QuaternionLinearInterpolant;
-	exports.LinearInterpolant = LinearInterpolant;
-	exports.DiscreteInterpolant = DiscreteInterpolant;
-	exports.CubicInterpolant = CubicInterpolant;
-	exports.Interpolant = Interpolant;
-	exports.Triangle = Triangle;
-	exports.Math = _Math;
-	exports.Spherical = Spherical;
-	exports.Cylindrical = Cylindrical;
-	exports.Plane = Plane;
-	exports.Frustum = Frustum;
-	exports.Sphere = Sphere;
-	exports.Ray = Ray;
-	exports.Matrix4 = Matrix4;
-	exports.Matrix3 = Matrix3;
-	exports.Box3 = Box3;
-	exports.Box2 = Box2;
-	exports.Line3 = Line3;
-	exports.Euler = Euler;
-	exports.Vector4 = Vector4;
-	exports.Vector3 = Vector3;
-	exports.Vector2 = Vector2;
-	exports.Quaternion = Quaternion;
-	exports.Color = Color;
-	exports.ImmediateRenderObject = ImmediateRenderObject;
-	exports.VertexNormalsHelper = VertexNormalsHelper;
-	exports.SpotLightHelper = SpotLightHelper;
-	exports.SkeletonHelper = SkeletonHelper;
-	exports.PointLightHelper = PointLightHelper;
-	exports.RectAreaLightHelper = RectAreaLightHelper;
-	exports.HemisphereLightHelper = HemisphereLightHelper;
-	exports.GridHelper = GridHelper;
-	exports.PolarGridHelper = PolarGridHelper;
-	exports.FaceNormalsHelper = FaceNormalsHelper;
-	exports.DirectionalLightHelper = DirectionalLightHelper;
-	exports.CameraHelper = CameraHelper;
-	exports.BoxHelper = BoxHelper;
-	exports.Box3Helper = Box3Helper;
-	exports.PlaneHelper = PlaneHelper;
+	exports.AnimationLoader = AnimationLoader;
+	exports.AnimationMixer = AnimationMixer;
+	exports.AnimationObjectGroup = AnimationObjectGroup;
+	exports.AnimationUtils = AnimationUtils;
+	exports.ArcCurve = ArcCurve;
+	exports.ArrayCamera = ArrayCamera;
 	exports.ArrowHelper = ArrowHelper;
+	exports.Audio = Audio;
+	exports.AudioAnalyser = AudioAnalyser;
+	exports.AudioContext = AudioContext;
+	exports.AudioListener = AudioListener;
+	exports.AudioLoader = AudioLoader;
 	exports.AxesHelper = AxesHelper;
-	exports.Shape = Shape;
-	exports.Path = Path;
-	exports.ShapePath = ShapePath;
-	exports.Font = Font;
-	exports.CurvePath = CurvePath;
-	exports.Curve = Curve;
-	exports.ShapeUtils = ShapeUtils;
-	exports.WebGLUtils = WebGLUtils;
-	exports.WireframeGeometry = WireframeGeometry;
-	exports.ParametricGeometry = ParametricGeometry;
-	exports.ParametricBufferGeometry = ParametricBufferGeometry;
-	exports.TetrahedronGeometry = TetrahedronGeometry;
-	exports.TetrahedronBufferGeometry = TetrahedronBufferGeometry;
-	exports.OctahedronGeometry = OctahedronGeometry;
-	exports.OctahedronBufferGeometry = OctahedronBufferGeometry;
-	exports.IcosahedronGeometry = IcosahedronGeometry;
-	exports.IcosahedronBufferGeometry = IcosahedronBufferGeometry;
-	exports.DodecahedronGeometry = DodecahedronGeometry;
-	exports.DodecahedronBufferGeometry = DodecahedronBufferGeometry;
-	exports.PolyhedronGeometry = PolyhedronGeometry;
-	exports.PolyhedronBufferGeometry = PolyhedronBufferGeometry;
-	exports.TubeGeometry = TubeGeometry;
-	exports.TubeBufferGeometry = TubeBufferGeometry;
-	exports.TorusKnotGeometry = TorusKnotGeometry;
-	exports.TorusKnotBufferGeometry = TorusKnotBufferGeometry;
-	exports.TorusGeometry = TorusGeometry;
-	exports.TorusBufferGeometry = TorusBufferGeometry;
-	exports.TextGeometry = TextGeometry;
-	exports.TextBufferGeometry = TextBufferGeometry;
-	exports.SphereGeometry = SphereGeometry;
-	exports.SphereBufferGeometry = SphereBufferGeometry;
-	exports.RingGeometry = RingGeometry;
-	exports.RingBufferGeometry = RingBufferGeometry;
-	exports.PlaneGeometry = PlaneGeometry;
-	exports.PlaneBufferGeometry = PlaneBufferGeometry;
-	exports.LatheGeometry = LatheGeometry;
-	exports.LatheBufferGeometry = LatheBufferGeometry;
-	exports.ShapeGeometry = ShapeGeometry;
-	exports.ShapeBufferGeometry = ShapeBufferGeometry;
-	exports.ExtrudeGeometry = ExtrudeGeometry;
-	exports.ExtrudeBufferGeometry = ExtrudeBufferGeometry;
-	exports.EdgesGeometry = EdgesGeometry;
-	exports.ConeGeometry = ConeGeometry;
-	exports.ConeBufferGeometry = ConeBufferGeometry;
-	exports.CylinderGeometry = CylinderGeometry;
-	exports.CylinderBufferGeometry = CylinderBufferGeometry;
-	exports.CircleGeometry = CircleGeometry;
-	exports.CircleBufferGeometry = CircleBufferGeometry;
+	exports.AxisHelper = AxisHelper;
+	exports.BackSide = BackSide;
+	exports.BasicDepthPacking = BasicDepthPacking;
+	exports.BasicShadowMap = BasicShadowMap;
+	exports.BinaryTextureLoader = BinaryTextureLoader;
+	exports.Bone = Bone;
+	exports.BooleanKeyframeTrack = BooleanKeyframeTrack;
+	exports.BoundingBoxHelper = BoundingBoxHelper;
+	exports.Box2 = Box2;
+	exports.Box3 = Box3;
+	exports.Box3Helper = Box3Helper;
+	exports.BoxBufferGeometry = BoxGeometry;
 	exports.BoxGeometry = BoxGeometry;
-	exports.BoxBufferGeometry = BoxBufferGeometry;
-	exports.ShadowMaterial = ShadowMaterial;
-	exports.SpriteMaterial = SpriteMaterial;
-	exports.RawShaderMaterial = RawShaderMaterial;
-	exports.ShaderMaterial = ShaderMaterial;
-	exports.PointsMaterial = PointsMaterial;
-	exports.MeshPhysicalMaterial = MeshPhysicalMaterial;
-	exports.MeshStandardMaterial = MeshStandardMaterial;
-	exports.MeshPhongMaterial = MeshPhongMaterial;
-	exports.MeshToonMaterial = MeshToonMaterial;
-	exports.MeshNormalMaterial = MeshNormalMaterial;
-	exports.MeshLambertMaterial = MeshLambertMaterial;
-	exports.MeshDepthMaterial = MeshDepthMaterial;
-	exports.MeshDistanceMaterial = MeshDistanceMaterial;
-	exports.MeshBasicMaterial = MeshBasicMaterial;
-	exports.LineDashedMaterial = LineDashedMaterial;
-	exports.LineBasicMaterial = LineBasicMaterial;
-	exports.Material = Material;
-	exports.Float64BufferAttribute = Float64BufferAttribute;
-	exports.Float32BufferAttribute = Float32BufferAttribute;
-	exports.Uint32BufferAttribute = Uint32BufferAttribute;
-	exports.Int32BufferAttribute = Int32BufferAttribute;
-	exports.Uint16BufferAttribute = Uint16BufferAttribute;
-	exports.Int16BufferAttribute = Int16BufferAttribute;
-	exports.Uint8ClampedBufferAttribute = Uint8ClampedBufferAttribute;
-	exports.Uint8BufferAttribute = Uint8BufferAttribute;
-	exports.Int8BufferAttribute = Int8BufferAttribute;
+	exports.BoxHelper = BoxHelper;
 	exports.BufferAttribute = BufferAttribute;
-	exports.ArcCurve = ArcCurve;
+	exports.BufferGeometry = BufferGeometry;
+	exports.BufferGeometryLoader = BufferGeometryLoader;
+	exports.ByteType = ByteType;
+	exports.Cache = Cache;
+	exports.Camera = Camera;
+	exports.CameraHelper = CameraHelper;
+	exports.CanvasRenderer = CanvasRenderer;
+	exports.CanvasTexture = CanvasTexture;
 	exports.CatmullRomCurve3 = CatmullRomCurve3;
+	exports.CineonToneMapping = CineonToneMapping;
+	exports.CircleBufferGeometry = CircleGeometry;
+	exports.CircleGeometry = CircleGeometry;
+	exports.ClampToEdgeWrapping = ClampToEdgeWrapping;
+	exports.Clock = Clock;
+	exports.Color = Color;
+	exports.ColorKeyframeTrack = ColorKeyframeTrack;
+	exports.CompressedTexture = CompressedTexture;
+	exports.CompressedTextureLoader = CompressedTextureLoader;
+	exports.ConeBufferGeometry = ConeGeometry;
+	exports.ConeGeometry = ConeGeometry;
+	exports.CubeCamera = CubeCamera;
+	exports.CubeReflectionMapping = CubeReflectionMapping;
+	exports.CubeRefractionMapping = CubeRefractionMapping;
+	exports.CubeTexture = CubeTexture;
+	exports.CubeTextureLoader = CubeTextureLoader;
+	exports.CubeUVReflectionMapping = CubeUVReflectionMapping;
+	exports.CubeUVRefractionMapping = CubeUVRefractionMapping;
 	exports.CubicBezierCurve = CubicBezierCurve;
 	exports.CubicBezierCurve3 = CubicBezierCurve3;
-	exports.EllipseCurve = EllipseCurve;
-	exports.LineCurve = LineCurve;
-	exports.LineCurve3 = LineCurve3;
-	exports.QuadraticBezierCurve = QuadraticBezierCurve;
-	exports.QuadraticBezierCurve3 = QuadraticBezierCurve3;
-	exports.SplineCurve = SplineCurve;
-	exports.REVISION = REVISION;
-	exports.MOUSE = MOUSE;
-	exports.CullFaceNone = CullFaceNone;
+	exports.CubicInterpolant = CubicInterpolant;
 	exports.CullFaceBack = CullFaceBack;
 	exports.CullFaceFront = CullFaceFront;
 	exports.CullFaceFrontBack = CullFaceFrontBack;
-	exports.FrontFaceDirectionCW = FrontFaceDirectionCW;
-	exports.FrontFaceDirectionCCW = FrontFaceDirectionCCW;
-	exports.BasicShadowMap = BasicShadowMap;
-	exports.PCFShadowMap = PCFShadowMap;
-	exports.PCFSoftShadowMap = PCFSoftShadowMap;
-	exports.FrontSide = FrontSide;
-	exports.BackSide = BackSide;
-	exports.DoubleSide = DoubleSide;
-	exports.FlatShading = FlatShading;
-	exports.SmoothShading = SmoothShading;
-	exports.NoColors = NoColors;
-	exports.FaceColors = FaceColors;
-	exports.VertexColors = VertexColors;
-	exports.NoBlending = NoBlending;
-	exports.NormalBlending = NormalBlending;
-	exports.AdditiveBlending = AdditiveBlending;
-	exports.SubtractiveBlending = SubtractiveBlending;
-	exports.MultiplyBlending = MultiplyBlending;
+	exports.CullFaceNone = CullFaceNone;
+	exports.Curve = Curve;
+	exports.CurvePath = CurvePath;
 	exports.CustomBlending = CustomBlending;
-	exports.AddEquation = AddEquation;
-	exports.SubtractEquation = SubtractEquation;
-	exports.ReverseSubtractEquation = ReverseSubtractEquation;
-	exports.MinEquation = MinEquation;
-	exports.MaxEquation = MaxEquation;
-	exports.ZeroFactor = ZeroFactor;
-	exports.OneFactor = OneFactor;
-	exports.SrcColorFactor = SrcColorFactor;
-	exports.OneMinusSrcColorFactor = OneMinusSrcColorFactor;
-	exports.SrcAlphaFactor = SrcAlphaFactor;
-	exports.OneMinusSrcAlphaFactor = OneMinusSrcAlphaFactor;
+	exports.CustomToneMapping = CustomToneMapping;
+	exports.CylinderBufferGeometry = CylinderGeometry;
+	exports.CylinderGeometry = CylinderGeometry;
+	exports.Cylindrical = Cylindrical;
+	exports.DataTexture = DataTexture;
+	exports.DataTexture2DArray = DataTexture2DArray;
+	exports.DataTexture3D = DataTexture3D;
+	exports.DataTextureLoader = DataTextureLoader;
+	exports.DataUtils = DataUtils;
+	exports.DecrementStencilOp = DecrementStencilOp;
+	exports.DecrementWrapStencilOp = DecrementWrapStencilOp;
+	exports.DefaultLoadingManager = DefaultLoadingManager;
+	exports.DepthFormat = DepthFormat;
+	exports.DepthStencilFormat = DepthStencilFormat;
+	exports.DepthTexture = DepthTexture;
+	exports.DirectionalLight = DirectionalLight;
+	exports.DirectionalLightHelper = DirectionalLightHelper;
+	exports.DiscreteInterpolant = DiscreteInterpolant;
+	exports.DodecahedronBufferGeometry = DodecahedronGeometry;
+	exports.DodecahedronGeometry = DodecahedronGeometry;
+	exports.DoubleSide = DoubleSide;
 	exports.DstAlphaFactor = DstAlphaFactor;
-	exports.OneMinusDstAlphaFactor = OneMinusDstAlphaFactor;
 	exports.DstColorFactor = DstColorFactor;
-	exports.OneMinusDstColorFactor = OneMinusDstColorFactor;
-	exports.SrcAlphaSaturateFactor = SrcAlphaSaturateFactor;
-	exports.NeverDepth = NeverDepth;
-	exports.AlwaysDepth = AlwaysDepth;
-	exports.LessDepth = LessDepth;
-	exports.LessEqualDepth = LessEqualDepth;
+	exports.DynamicBufferAttribute = DynamicBufferAttribute;
+	exports.DynamicCopyUsage = DynamicCopyUsage;
+	exports.DynamicDrawUsage = DynamicDrawUsage;
+	exports.DynamicReadUsage = DynamicReadUsage;
+	exports.EdgesGeometry = EdgesGeometry;
+	exports.EdgesHelper = EdgesHelper;
+	exports.EllipseCurve = EllipseCurve;
 	exports.EqualDepth = EqualDepth;
-	exports.GreaterEqualDepth = GreaterEqualDepth;
-	exports.GreaterDepth = GreaterDepth;
-	exports.NotEqualDepth = NotEqualDepth;
-	exports.MultiplyOperation = MultiplyOperation;
-	exports.MixOperation = MixOperation;
-	exports.AddOperation = AddOperation;
-	exports.NoToneMapping = NoToneMapping;
-	exports.LinearToneMapping = LinearToneMapping;
-	exports.ReinhardToneMapping = ReinhardToneMapping;
-	exports.Uncharted2ToneMapping = Uncharted2ToneMapping;
-	exports.CineonToneMapping = CineonToneMapping;
-	exports.UVMapping = UVMapping;
-	exports.CubeReflectionMapping = CubeReflectionMapping;
-	exports.CubeRefractionMapping = CubeRefractionMapping;
+	exports.EqualStencilFunc = EqualStencilFunc;
 	exports.EquirectangularReflectionMapping = EquirectangularReflectionMapping;
 	exports.EquirectangularRefractionMapping = EquirectangularRefractionMapping;
-	exports.SphericalReflectionMapping = SphericalReflectionMapping;
-	exports.CubeUVReflectionMapping = CubeUVReflectionMapping;
-	exports.CubeUVRefractionMapping = CubeUVRefractionMapping;
-	exports.RepeatWrapping = RepeatWrapping;
-	exports.ClampToEdgeWrapping = ClampToEdgeWrapping;
+	exports.Euler = Euler;
+	exports.EventDispatcher = EventDispatcher;
+	exports.ExtrudeBufferGeometry = ExtrudeGeometry;
+	exports.ExtrudeGeometry = ExtrudeGeometry;
+	exports.FaceColors = FaceColors;
+	exports.FileLoader = FileLoader;
+	exports.FlatShading = FlatShading;
+	exports.Float16BufferAttribute = Float16BufferAttribute;
+	exports.Float32Attribute = Float32Attribute;
+	exports.Float32BufferAttribute = Float32BufferAttribute;
+	exports.Float64Attribute = Float64Attribute;
+	exports.Float64BufferAttribute = Float64BufferAttribute;
+	exports.FloatType = FloatType;
+	exports.Fog = Fog;
+	exports.FogExp2 = FogExp2;
+	exports.Font = Font;
+	exports.FontLoader = FontLoader;
+	exports.FrontSide = FrontSide;
+	exports.Frustum = Frustum;
+	exports.GLBufferAttribute = GLBufferAttribute;
+	exports.GLSL1 = GLSL1;
+	exports.GLSL3 = GLSL3;
+	exports.GammaEncoding = GammaEncoding;
+	exports.GreaterDepth = GreaterDepth;
+	exports.GreaterEqualDepth = GreaterEqualDepth;
+	exports.GreaterEqualStencilFunc = GreaterEqualStencilFunc;
+	exports.GreaterStencilFunc = GreaterStencilFunc;
+	exports.GridHelper = GridHelper;
+	exports.Group = Group;
+	exports.HalfFloatType = HalfFloatType;
+	exports.HemisphereLight = HemisphereLight;
+	exports.HemisphereLightHelper = HemisphereLightHelper;
+	exports.HemisphereLightProbe = HemisphereLightProbe;
+	exports.IcosahedronBufferGeometry = IcosahedronGeometry;
+	exports.IcosahedronGeometry = IcosahedronGeometry;
+	exports.ImageBitmapLoader = ImageBitmapLoader;
+	exports.ImageLoader = ImageLoader;
+	exports.ImageUtils = ImageUtils;
+	exports.ImmediateRenderObject = ImmediateRenderObject;
+	exports.IncrementStencilOp = IncrementStencilOp;
+	exports.IncrementWrapStencilOp = IncrementWrapStencilOp;
+	exports.InstancedBufferAttribute = InstancedBufferAttribute;
+	exports.InstancedBufferGeometry = InstancedBufferGeometry;
+	exports.InstancedInterleavedBuffer = InstancedInterleavedBuffer;
+	exports.InstancedMesh = InstancedMesh;
+	exports.Int16Attribute = Int16Attribute;
+	exports.Int16BufferAttribute = Int16BufferAttribute;
+	exports.Int32Attribute = Int32Attribute;
+	exports.Int32BufferAttribute = Int32BufferAttribute;
+	exports.Int8Attribute = Int8Attribute;
+	exports.Int8BufferAttribute = Int8BufferAttribute;
+	exports.IntType = IntType;
+	exports.InterleavedBuffer = InterleavedBuffer;
+	exports.InterleavedBufferAttribute = InterleavedBufferAttribute;
+	exports.Interpolant = Interpolant;
+	exports.InterpolateDiscrete = InterpolateDiscrete;
+	exports.InterpolateLinear = InterpolateLinear;
+	exports.InterpolateSmooth = InterpolateSmooth;
+	exports.InvertStencilOp = InvertStencilOp;
+	exports.JSONLoader = JSONLoader;
+	exports.KeepStencilOp = KeepStencilOp;
+	exports.KeyframeTrack = KeyframeTrack;
+	exports.LOD = LOD;
+	exports.LatheBufferGeometry = LatheGeometry;
+	exports.LatheGeometry = LatheGeometry;
+	exports.Layers = Layers;
+	exports.LensFlare = LensFlare;
+	exports.LessDepth = LessDepth;
+	exports.LessEqualDepth = LessEqualDepth;
+	exports.LessEqualStencilFunc = LessEqualStencilFunc;
+	exports.LessStencilFunc = LessStencilFunc;
+	exports.Light = Light;
+	exports.LightProbe = LightProbe;
+	exports.Line = Line;
+	exports.Line3 = Line3;
+	exports.LineBasicMaterial = LineBasicMaterial;
+	exports.LineCurve = LineCurve;
+	exports.LineCurve3 = LineCurve3;
+	exports.LineDashedMaterial = LineDashedMaterial;
+	exports.LineLoop = LineLoop;
+	exports.LinePieces = LinePieces;
+	exports.LineSegments = LineSegments;
+	exports.LineStrip = LineStrip;
+	exports.LinearEncoding = LinearEncoding;
+	exports.LinearFilter = LinearFilter;
+	exports.LinearInterpolant = LinearInterpolant;
+	exports.LinearMipMapLinearFilter = LinearMipMapLinearFilter;
+	exports.LinearMipMapNearestFilter = LinearMipMapNearestFilter;
+	exports.LinearMipmapLinearFilter = LinearMipmapLinearFilter;
+	exports.LinearMipmapNearestFilter = LinearMipmapNearestFilter;
+	exports.LinearToneMapping = LinearToneMapping;
+	exports.Loader = Loader;
+	exports.LoaderUtils = LoaderUtils;
+	exports.LoadingManager = LoadingManager;
+	exports.LogLuvEncoding = LogLuvEncoding;
+	exports.LoopOnce = LoopOnce;
+	exports.LoopPingPong = LoopPingPong;
+	exports.LoopRepeat = LoopRepeat;
+	exports.LuminanceAlphaFormat = LuminanceAlphaFormat;
+	exports.LuminanceFormat = LuminanceFormat;
+	exports.MOUSE = MOUSE;
+	exports.Material = Material;
+	exports.MaterialLoader = MaterialLoader;
+	exports.Math = MathUtils;
+	exports.MathUtils = MathUtils;
+	exports.Matrix3 = Matrix3;
+	exports.Matrix4 = Matrix4;
+	exports.MaxEquation = MaxEquation;
+	exports.Mesh = Mesh;
+	exports.MeshBasicMaterial = MeshBasicMaterial;
+	exports.MeshDepthMaterial = MeshDepthMaterial;
+	exports.MeshDistanceMaterial = MeshDistanceMaterial;
+	exports.MeshFaceMaterial = MeshFaceMaterial;
+	exports.MeshLambertMaterial = MeshLambertMaterial;
+	exports.MeshMatcapMaterial = MeshMatcapMaterial;
+	exports.MeshNormalMaterial = MeshNormalMaterial;
+	exports.MeshPhongMaterial = MeshPhongMaterial;
+	exports.MeshPhysicalMaterial = MeshPhysicalMaterial;
+	exports.MeshStandardMaterial = MeshStandardMaterial;
+	exports.MeshToonMaterial = MeshToonMaterial;
+	exports.MinEquation = MinEquation;
 	exports.MirroredRepeatWrapping = MirroredRepeatWrapping;
+	exports.MixOperation = MixOperation;
+	exports.MultiMaterial = MultiMaterial;
+	exports.MultiplyBlending = MultiplyBlending;
+	exports.MultiplyOperation = MultiplyOperation;
 	exports.NearestFilter = NearestFilter;
-	exports.NearestMipMapNearestFilter = NearestMipMapNearestFilter;
 	exports.NearestMipMapLinearFilter = NearestMipMapLinearFilter;
-	exports.LinearFilter = LinearFilter;
-	exports.LinearMipMapNearestFilter = LinearMipMapNearestFilter;
-	exports.LinearMipMapLinearFilter = LinearMipMapLinearFilter;
-	exports.UnsignedByteType = UnsignedByteType;
-	exports.ByteType = ByteType;
-	exports.ShortType = ShortType;
-	exports.UnsignedShortType = UnsignedShortType;
-	exports.IntType = IntType;
-	exports.UnsignedIntType = UnsignedIntType;
-	exports.FloatType = FloatType;
-	exports.HalfFloatType = HalfFloatType;
-	exports.UnsignedShort4444Type = UnsignedShort4444Type;
-	exports.UnsignedShort5551Type = UnsignedShort5551Type;
-	exports.UnsignedShort565Type = UnsignedShort565Type;
-	exports.UnsignedInt248Type = UnsignedInt248Type;
-	exports.AlphaFormat = AlphaFormat;
-	exports.RGBFormat = RGBFormat;
+	exports.NearestMipMapNearestFilter = NearestMipMapNearestFilter;
+	exports.NearestMipmapLinearFilter = NearestMipmapLinearFilter;
+	exports.NearestMipmapNearestFilter = NearestMipmapNearestFilter;
+	exports.NeverDepth = NeverDepth;
+	exports.NeverStencilFunc = NeverStencilFunc;
+	exports.NoBlending = NoBlending;
+	exports.NoColors = NoColors;
+	exports.NoToneMapping = NoToneMapping;
+	exports.NormalAnimationBlendMode = NormalAnimationBlendMode;
+	exports.NormalBlending = NormalBlending;
+	exports.NotEqualDepth = NotEqualDepth;
+	exports.NotEqualStencilFunc = NotEqualStencilFunc;
+	exports.NumberKeyframeTrack = NumberKeyframeTrack;
+	exports.Object3D = Object3D;
+	exports.ObjectLoader = ObjectLoader;
+	exports.ObjectSpaceNormalMap = ObjectSpaceNormalMap;
+	exports.OctahedronBufferGeometry = OctahedronGeometry;
+	exports.OctahedronGeometry = OctahedronGeometry;
+	exports.OneFactor = OneFactor;
+	exports.OneMinusDstAlphaFactor = OneMinusDstAlphaFactor;
+	exports.OneMinusDstColorFactor = OneMinusDstColorFactor;
+	exports.OneMinusSrcAlphaFactor = OneMinusSrcAlphaFactor;
+	exports.OneMinusSrcColorFactor = OneMinusSrcColorFactor;
+	exports.OrthographicCamera = OrthographicCamera;
+	exports.PCFShadowMap = PCFShadowMap;
+	exports.PCFSoftShadowMap = PCFSoftShadowMap;
+	exports.PMREMGenerator = PMREMGenerator;
+	exports.ParametricBufferGeometry = ParametricGeometry;
+	exports.ParametricGeometry = ParametricGeometry;
+	exports.Particle = Particle;
+	exports.ParticleBasicMaterial = ParticleBasicMaterial;
+	exports.ParticleSystem = ParticleSystem;
+	exports.ParticleSystemMaterial = ParticleSystemMaterial;
+	exports.Path = Path;
+	exports.PerspectiveCamera = PerspectiveCamera;
+	exports.Plane = Plane;
+	exports.PlaneBufferGeometry = PlaneGeometry;
+	exports.PlaneGeometry = PlaneGeometry;
+	exports.PlaneHelper = PlaneHelper;
+	exports.PointCloud = PointCloud;
+	exports.PointCloudMaterial = PointCloudMaterial;
+	exports.PointLight = PointLight;
+	exports.PointLightHelper = PointLightHelper;
+	exports.Points = Points;
+	exports.PointsMaterial = PointsMaterial;
+	exports.PolarGridHelper = PolarGridHelper;
+	exports.PolyhedronBufferGeometry = PolyhedronGeometry;
+	exports.PolyhedronGeometry = PolyhedronGeometry;
+	exports.PositionalAudio = PositionalAudio;
+	exports.PropertyBinding = PropertyBinding;
+	exports.PropertyMixer = PropertyMixer;
+	exports.QuadraticBezierCurve = QuadraticBezierCurve;
+	exports.QuadraticBezierCurve3 = QuadraticBezierCurve3;
+	exports.Quaternion = Quaternion;
+	exports.QuaternionKeyframeTrack = QuaternionKeyframeTrack;
+	exports.QuaternionLinearInterpolant = QuaternionLinearInterpolant;
+	exports.REVISION = REVISION;
+	exports.RGBADepthPacking = RGBADepthPacking;
 	exports.RGBAFormat = RGBAFormat;
-	exports.LuminanceFormat = LuminanceFormat;
-	exports.LuminanceAlphaFormat = LuminanceAlphaFormat;
-	exports.RGBEFormat = RGBEFormat;
-	exports.DepthFormat = DepthFormat;
-	exports.DepthStencilFormat = DepthStencilFormat;
-	exports.RGB_S3TC_DXT1_Format = RGB_S3TC_DXT1_Format;
-	exports.RGBA_S3TC_DXT1_Format = RGBA_S3TC_DXT1_Format;
-	exports.RGBA_S3TC_DXT3_Format = RGBA_S3TC_DXT3_Format;
-	exports.RGBA_S3TC_DXT5_Format = RGBA_S3TC_DXT5_Format;
-	exports.RGB_PVRTC_4BPPV1_Format = RGB_PVRTC_4BPPV1_Format;
-	exports.RGB_PVRTC_2BPPV1_Format = RGB_PVRTC_2BPPV1_Format;
-	exports.RGBA_PVRTC_4BPPV1_Format = RGBA_PVRTC_4BPPV1_Format;
-	exports.RGBA_PVRTC_2BPPV1_Format = RGBA_PVRTC_2BPPV1_Format;
-	exports.RGB_ETC1_Format = RGB_ETC1_Format;
+	exports.RGBAIntegerFormat = RGBAIntegerFormat;
+	exports.RGBA_ASTC_10x10_Format = RGBA_ASTC_10x10_Format;
+	exports.RGBA_ASTC_10x5_Format = RGBA_ASTC_10x5_Format;
+	exports.RGBA_ASTC_10x6_Format = RGBA_ASTC_10x6_Format;
+	exports.RGBA_ASTC_10x8_Format = RGBA_ASTC_10x8_Format;
+	exports.RGBA_ASTC_12x10_Format = RGBA_ASTC_12x10_Format;
+	exports.RGBA_ASTC_12x12_Format = RGBA_ASTC_12x12_Format;
 	exports.RGBA_ASTC_4x4_Format = RGBA_ASTC_4x4_Format;
 	exports.RGBA_ASTC_5x4_Format = RGBA_ASTC_5x4_Format;
 	exports.RGBA_ASTC_5x5_Format = RGBA_ASTC_5x5_Format;
@@ -46213,72 +36126,154 @@
 	exports.RGBA_ASTC_8x5_Format = RGBA_ASTC_8x5_Format;
 	exports.RGBA_ASTC_8x6_Format = RGBA_ASTC_8x6_Format;
 	exports.RGBA_ASTC_8x8_Format = RGBA_ASTC_8x8_Format;
-	exports.RGBA_ASTC_10x5_Format = RGBA_ASTC_10x5_Format;
-	exports.RGBA_ASTC_10x6_Format = RGBA_ASTC_10x6_Format;
-	exports.RGBA_ASTC_10x8_Format = RGBA_ASTC_10x8_Format;
-	exports.RGBA_ASTC_10x10_Format = RGBA_ASTC_10x10_Format;
-	exports.RGBA_ASTC_12x10_Format = RGBA_ASTC_12x10_Format;
-	exports.RGBA_ASTC_12x12_Format = RGBA_ASTC_12x12_Format;
-	exports.LoopOnce = LoopOnce;
-	exports.LoopRepeat = LoopRepeat;
-	exports.LoopPingPong = LoopPingPong;
-	exports.InterpolateDiscrete = InterpolateDiscrete;
-	exports.InterpolateLinear = InterpolateLinear;
-	exports.InterpolateSmooth = InterpolateSmooth;
-	exports.ZeroCurvatureEnding = ZeroCurvatureEnding;
-	exports.ZeroSlopeEnding = ZeroSlopeEnding;
-	exports.WrapAroundEnding = WrapAroundEnding;
-	exports.TrianglesDrawMode = TrianglesDrawMode;
-	exports.TriangleStripDrawMode = TriangleStripDrawMode;
-	exports.TriangleFanDrawMode = TriangleFanDrawMode;
-	exports.LinearEncoding = LinearEncoding;
-	exports.sRGBEncoding = sRGBEncoding;
-	exports.GammaEncoding = GammaEncoding;
+	exports.RGBA_BPTC_Format = RGBA_BPTC_Format;
+	exports.RGBA_ETC2_EAC_Format = RGBA_ETC2_EAC_Format;
+	exports.RGBA_PVRTC_2BPPV1_Format = RGBA_PVRTC_2BPPV1_Format;
+	exports.RGBA_PVRTC_4BPPV1_Format = RGBA_PVRTC_4BPPV1_Format;
+	exports.RGBA_S3TC_DXT1_Format = RGBA_S3TC_DXT1_Format;
+	exports.RGBA_S3TC_DXT3_Format = RGBA_S3TC_DXT3_Format;
+	exports.RGBA_S3TC_DXT5_Format = RGBA_S3TC_DXT5_Format;
+	exports.RGBDEncoding = RGBDEncoding;
 	exports.RGBEEncoding = RGBEEncoding;
-	exports.LogLuvEncoding = LogLuvEncoding;
-	exports.RGBM7Encoding = RGBM7Encoding;
+	exports.RGBEFormat = RGBEFormat;
+	exports.RGBFormat = RGBFormat;
+	exports.RGBIntegerFormat = RGBIntegerFormat;
 	exports.RGBM16Encoding = RGBM16Encoding;
-	exports.RGBDEncoding = RGBDEncoding;
-	exports.BasicDepthPacking = BasicDepthPacking;
-	exports.RGBADepthPacking = RGBADepthPacking;
-	exports.CubeGeometry = BoxGeometry;
-	exports.Face4 = Face4;
-	exports.LineStrip = LineStrip;
-	exports.LinePieces = LinePieces;
-	exports.MeshFaceMaterial = MeshFaceMaterial;
-	exports.MultiMaterial = MultiMaterial;
-	exports.PointCloud = PointCloud;
-	exports.Particle = Particle;
-	exports.ParticleSystem = ParticleSystem;
-	exports.PointCloudMaterial = PointCloudMaterial;
-	exports.ParticleBasicMaterial = ParticleBasicMaterial;
-	exports.ParticleSystemMaterial = ParticleSystemMaterial;
-	exports.Vertex = Vertex;
-	exports.DynamicBufferAttribute = DynamicBufferAttribute;
-	exports.Int8Attribute = Int8Attribute;
-	exports.Uint8Attribute = Uint8Attribute;
-	exports.Uint8ClampedAttribute = Uint8ClampedAttribute;
-	exports.Int16Attribute = Int16Attribute;
+	exports.RGBM7Encoding = RGBM7Encoding;
+	exports.RGB_ETC1_Format = RGB_ETC1_Format;
+	exports.RGB_ETC2_Format = RGB_ETC2_Format;
+	exports.RGB_PVRTC_2BPPV1_Format = RGB_PVRTC_2BPPV1_Format;
+	exports.RGB_PVRTC_4BPPV1_Format = RGB_PVRTC_4BPPV1_Format;
+	exports.RGB_S3TC_DXT1_Format = RGB_S3TC_DXT1_Format;
+	exports.RGFormat = RGFormat;
+	exports.RGIntegerFormat = RGIntegerFormat;
+	exports.RawShaderMaterial = RawShaderMaterial;
+	exports.Ray = Ray;
+	exports.Raycaster = Raycaster;
+	exports.RectAreaLight = RectAreaLight;
+	exports.RedFormat = RedFormat;
+	exports.RedIntegerFormat = RedIntegerFormat;
+	exports.ReinhardToneMapping = ReinhardToneMapping;
+	exports.RepeatWrapping = RepeatWrapping;
+	exports.ReplaceStencilOp = ReplaceStencilOp;
+	exports.ReverseSubtractEquation = ReverseSubtractEquation;
+	exports.RingBufferGeometry = RingGeometry;
+	exports.RingGeometry = RingGeometry;
+	exports.SRGB8_ALPHA8_ASTC_10x10_Format = SRGB8_ALPHA8_ASTC_10x10_Format;
+	exports.SRGB8_ALPHA8_ASTC_10x5_Format = SRGB8_ALPHA8_ASTC_10x5_Format;
+	exports.SRGB8_ALPHA8_ASTC_10x6_Format = SRGB8_ALPHA8_ASTC_10x6_Format;
+	exports.SRGB8_ALPHA8_ASTC_10x8_Format = SRGB8_ALPHA8_ASTC_10x8_Format;
+	exports.SRGB8_ALPHA8_ASTC_12x10_Format = SRGB8_ALPHA8_ASTC_12x10_Format;
+	exports.SRGB8_ALPHA8_ASTC_12x12_Format = SRGB8_ALPHA8_ASTC_12x12_Format;
+	exports.SRGB8_ALPHA8_ASTC_4x4_Format = SRGB8_ALPHA8_ASTC_4x4_Format;
+	exports.SRGB8_ALPHA8_ASTC_5x4_Format = SRGB8_ALPHA8_ASTC_5x4_Format;
+	exports.SRGB8_ALPHA8_ASTC_5x5_Format = SRGB8_ALPHA8_ASTC_5x5_Format;
+	exports.SRGB8_ALPHA8_ASTC_6x5_Format = SRGB8_ALPHA8_ASTC_6x5_Format;
+	exports.SRGB8_ALPHA8_ASTC_6x6_Format = SRGB8_ALPHA8_ASTC_6x6_Format;
+	exports.SRGB8_ALPHA8_ASTC_8x5_Format = SRGB8_ALPHA8_ASTC_8x5_Format;
+	exports.SRGB8_ALPHA8_ASTC_8x6_Format = SRGB8_ALPHA8_ASTC_8x6_Format;
+	exports.SRGB8_ALPHA8_ASTC_8x8_Format = SRGB8_ALPHA8_ASTC_8x8_Format;
+	exports.Scene = Scene;
+	exports.SceneUtils = SceneUtils;
+	exports.ShaderChunk = ShaderChunk;
+	exports.ShaderLib = ShaderLib;
+	exports.ShaderMaterial = ShaderMaterial;
+	exports.ShadowMaterial = ShadowMaterial;
+	exports.Shape = Shape;
+	exports.ShapeBufferGeometry = ShapeGeometry;
+	exports.ShapeGeometry = ShapeGeometry;
+	exports.ShapePath = ShapePath;
+	exports.ShapeUtils = ShapeUtils;
+	exports.ShortType = ShortType;
+	exports.Skeleton = Skeleton;
+	exports.SkeletonHelper = SkeletonHelper;
+	exports.SkinnedMesh = SkinnedMesh;
+	exports.SmoothShading = SmoothShading;
+	exports.Sphere = Sphere;
+	exports.SphereBufferGeometry = SphereGeometry;
+	exports.SphereGeometry = SphereGeometry;
+	exports.Spherical = Spherical;
+	exports.SphericalHarmonics3 = SphericalHarmonics3;
+	exports.SplineCurve = SplineCurve;
+	exports.SpotLight = SpotLight;
+	exports.SpotLightHelper = SpotLightHelper;
+	exports.Sprite = Sprite;
+	exports.SpriteMaterial = SpriteMaterial;
+	exports.SrcAlphaFactor = SrcAlphaFactor;
+	exports.SrcAlphaSaturateFactor = SrcAlphaSaturateFactor;
+	exports.SrcColorFactor = SrcColorFactor;
+	exports.StaticCopyUsage = StaticCopyUsage;
+	exports.StaticDrawUsage = StaticDrawUsage;
+	exports.StaticReadUsage = StaticReadUsage;
+	exports.StereoCamera = StereoCamera;
+	exports.StreamCopyUsage = StreamCopyUsage;
+	exports.StreamDrawUsage = StreamDrawUsage;
+	exports.StreamReadUsage = StreamReadUsage;
+	exports.StringKeyframeTrack = StringKeyframeTrack;
+	exports.SubtractEquation = SubtractEquation;
+	exports.SubtractiveBlending = SubtractiveBlending;
+	exports.TOUCH = TOUCH;
+	exports.TangentSpaceNormalMap = TangentSpaceNormalMap;
+	exports.TetrahedronBufferGeometry = TetrahedronGeometry;
+	exports.TetrahedronGeometry = TetrahedronGeometry;
+	exports.TextBufferGeometry = TextGeometry;
+	exports.TextGeometry = TextGeometry;
+	exports.Texture = Texture;
+	exports.TextureLoader = TextureLoader;
+	exports.TorusBufferGeometry = TorusGeometry;
+	exports.TorusGeometry = TorusGeometry;
+	exports.TorusKnotBufferGeometry = TorusKnotGeometry;
+	exports.TorusKnotGeometry = TorusKnotGeometry;
+	exports.Triangle = Triangle;
+	exports.TriangleFanDrawMode = TriangleFanDrawMode;
+	exports.TriangleStripDrawMode = TriangleStripDrawMode;
+	exports.TrianglesDrawMode = TrianglesDrawMode;
+	exports.TubeBufferGeometry = TubeGeometry;
+	exports.TubeGeometry = TubeGeometry;
+	exports.UVMapping = UVMapping;
 	exports.Uint16Attribute = Uint16Attribute;
-	exports.Int32Attribute = Int32Attribute;
+	exports.Uint16BufferAttribute = Uint16BufferAttribute;
 	exports.Uint32Attribute = Uint32Attribute;
-	exports.Float32Attribute = Float32Attribute;
-	exports.Float64Attribute = Float64Attribute;
-	exports.ClosedSplineCurve3 = ClosedSplineCurve3;
-	exports.SplineCurve3 = SplineCurve3;
-	exports.Spline = Spline;
-	exports.AxisHelper = AxisHelper;
-	exports.BoundingBoxHelper = BoundingBoxHelper;
-	exports.EdgesHelper = EdgesHelper;
+	exports.Uint32BufferAttribute = Uint32BufferAttribute;
+	exports.Uint8Attribute = Uint8Attribute;
+	exports.Uint8BufferAttribute = Uint8BufferAttribute;
+	exports.Uint8ClampedAttribute = Uint8ClampedAttribute;
+	exports.Uint8ClampedBufferAttribute = Uint8ClampedBufferAttribute;
+	exports.Uniform = Uniform;
+	exports.UniformsLib = UniformsLib;
+	exports.UniformsUtils = UniformsUtils;
+	exports.UnsignedByteType = UnsignedByteType;
+	exports.UnsignedInt248Type = UnsignedInt248Type;
+	exports.UnsignedIntType = UnsignedIntType;
+	exports.UnsignedShort4444Type = UnsignedShort4444Type;
+	exports.UnsignedShort5551Type = UnsignedShort5551Type;
+	exports.UnsignedShort565Type = UnsignedShort565Type;
+	exports.UnsignedShortType = UnsignedShortType;
+	exports.VSMShadowMap = VSMShadowMap;
+	exports.Vector2 = Vector2;
+	exports.Vector3 = Vector3;
+	exports.Vector4 = Vector4;
+	exports.VectorKeyframeTrack = VectorKeyframeTrack;
+	exports.Vertex = Vertex;
+	exports.VertexColors = VertexColors;
+	exports.VideoTexture = VideoTexture;
+	exports.WebGL1Renderer = WebGL1Renderer;
+	exports.WebGLCubeRenderTarget = WebGLCubeRenderTarget;
+	exports.WebGLMultipleRenderTargets = WebGLMultipleRenderTargets;
+	exports.WebGLMultisampleRenderTarget = WebGLMultisampleRenderTarget;
+	exports.WebGLRenderTarget = WebGLRenderTarget;
+	exports.WebGLRenderTargetCube = WebGLRenderTargetCube;
+	exports.WebGLRenderer = WebGLRenderer;
+	exports.WebGLUtils = WebGLUtils;
+	exports.WireframeGeometry = WireframeGeometry;
 	exports.WireframeHelper = WireframeHelper;
+	exports.WrapAroundEnding = WrapAroundEnding;
 	exports.XHRLoader = XHRLoader;
-	exports.BinaryTextureLoader = BinaryTextureLoader;
-	exports.GeometryUtils = GeometryUtils;
-	exports.ImageUtils = ImageUtils;
-	exports.Projector = Projector;
-	exports.CanvasRenderer = CanvasRenderer;
-	exports.SceneUtils = SceneUtils;
-	exports.LensFlare = LensFlare;
+	exports.ZeroCurvatureEnding = ZeroCurvatureEnding;
+	exports.ZeroFactor = ZeroFactor;
+	exports.ZeroSlopeEnding = ZeroSlopeEnding;
+	exports.ZeroStencilOp = ZeroStencilOp;
+	exports.sRGBEncoding = sRGBEncoding;
 
 	Object.defineProperty(exports, '__esModule', { value: true });
 
diff --git a/demo/libs/three.min.js b/demo/libs/three.min.js
index 96fc18a..1d57f39 100644
--- a/demo/libs/three.min.js
+++ b/demo/libs/three.min.js
@@ -1,927 +1,6 @@
-// threejs.org/license
-(function(k,xa){"object"===typeof exports&&"undefined"!==typeof module?xa(exports):"function"===typeof define&&define.amd?define(["exports"],xa):xa(k.THREE={})})(this,function(k){function xa(){}function C(a,b){this.x=a||0;this.y=b||0}function M(){this.elements=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1];0<arguments.length&&console.error("THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.")}function ja(a,b,c,d){this._x=a||0;this._y=b||0;this._z=c||0;this._w=void 0!==d?d:1}function p(a,
-b,c){this.x=a||0;this.y=b||0;this.z=c||0}function sa(){this.elements=[1,0,0,0,1,0,0,0,1];0<arguments.length&&console.error("THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.")}function Y(a,b,c,d,e,f,g,h,l,m){Object.defineProperty(this,"id",{value:xf++});this.uuid=S.generateUUID();this.name="";this.image=void 0!==a?a:Y.DEFAULT_IMAGE;this.mipmaps=[];this.mapping=void 0!==b?b:Y.DEFAULT_MAPPING;this.wrapS=void 0!==c?c:1001;this.wrapT=void 0!==d?d:1001;this.magFilter=void 0!==
-e?e:1006;this.minFilter=void 0!==f?f:1008;this.anisotropy=void 0!==l?l:1;this.format=void 0!==g?g:1023;this.type=void 0!==h?h:1009;this.offset=new C(0,0);this.repeat=new C(1,1);this.center=new C(0,0);this.rotation=0;this.matrixAutoUpdate=!0;this.matrix=new sa;this.generateMipmaps=!0;this.premultiplyAlpha=!1;this.flipY=!0;this.unpackAlignment=4;this.encoding=void 0!==m?m:3E3;this.version=0;this.onUpdate=null}function ea(a,b,c,d){this.x=a||0;this.y=b||0;this.z=c||0;this.w=void 0!==d?d:1}function hb(a,
-b,c){this.width=a;this.height=b;this.scissor=new ea(0,0,a,b);this.scissorTest=!1;this.viewport=new ea(0,0,a,b);c=c||{};void 0===c.minFilter&&(c.minFilter=1006);this.texture=new Y(void 0,void 0,c.wrapS,c.wrapT,c.magFilter,c.minFilter,c.format,c.type,c.anisotropy,c.encoding);this.depthBuffer=void 0!==c.depthBuffer?c.depthBuffer:!0;this.stencilBuffer=void 0!==c.stencilBuffer?c.stencilBuffer:!0;this.depthTexture=void 0!==c.depthTexture?c.depthTexture:null}function Ib(a,b,c){hb.call(this,a,b,c);this.activeMipMapLevel=
-this.activeCubeFace=0}function ib(a,b,c,d,e,f,g,h,l,m,u,n){Y.call(this,null,f,g,h,l,m,d,e,u,n);this.image={data:a,width:b,height:c};this.magFilter=void 0!==l?l:1003;this.minFilter=void 0!==m?m:1003;this.flipY=this.generateMipmaps=!1;this.unpackAlignment=1}function Va(a,b){this.min=void 0!==a?a:new p(Infinity,Infinity,Infinity);this.max=void 0!==b?b:new p(-Infinity,-Infinity,-Infinity)}function Ea(a,b){this.center=void 0!==a?a:new p;this.radius=void 0!==b?b:0}function Fa(a,b){this.normal=void 0!==
-a?a:new p(1,0,0);this.constant=void 0!==b?b:0}function ld(a,b,c,d,e,f){this.planes=[void 0!==a?a:new Fa,void 0!==b?b:new Fa,void 0!==c?c:new Fa,void 0!==d?d:new Fa,void 0!==e?e:new Fa,void 0!==f?f:new Fa]}function I(a,b,c){return void 0===b&&void 0===c?this.set(a):this.setRGB(a,b,c)}function yf(a){function b(b,c){var d=b.array,e=b.dynamic?a.DYNAMIC_DRAW:a.STATIC_DRAW,h=a.createBuffer();a.bindBuffer(c,h);a.bufferData(c,d,e);b.onUploadCallback();c=a.FLOAT;d instanceof Float32Array?c=a.FLOAT:d instanceof
-Float64Array?console.warn("THREE.WebGLAttributes: Unsupported data buffer format: Float64Array."):d instanceof Uint16Array?c=a.UNSIGNED_SHORT:d instanceof Int16Array?c=a.SHORT:d instanceof Uint32Array?c=a.UNSIGNED_INT:d instanceof Int32Array?c=a.INT:d instanceof Int8Array?c=a.BYTE:d instanceof Uint8Array&&(c=a.UNSIGNED_BYTE);return{buffer:h,type:c,bytesPerElement:d.BYTES_PER_ELEMENT,version:b.version}}var c=new WeakMap;return{get:function(a){a.isInterleavedBufferAttribute&&(a=a.data);return c.get(a)},
-remove:function(b){b.isInterleavedBufferAttribute&&(b=b.data);var d=c.get(b);d&&(a.deleteBuffer(d.buffer),c.delete(b))},update:function(d,e){d.isInterleavedBufferAttribute&&(d=d.data);var f=c.get(d);if(void 0===f)c.set(d,b(d,e));else if(f.version<d.version){var g=d,h=g.array,l=g.updateRange;a.bindBuffer(e,f.buffer);!1===g.dynamic?a.bufferData(e,h,a.STATIC_DRAW):-1===l.count?a.bufferSubData(e,0,h):0===l.count?console.error("THREE.WebGLObjects.updateBuffer: dynamic THREE.BufferAttribute marked as needsUpdate but updateRange.count is 0, ensure you are using set methods or updating manually."):
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-!1)});c.onChange(function(){b.setFromQuaternion(c,void 0,!1)});Object.defineProperties(this,{position:{enumerable:!0,value:a},rotation:{enumerable:!0,value:b},quaternion:{enumerable:!0,value:c},scale:{enumerable:!0,value:d},modelViewMatrix:{value:new M},normalMatrix:{value:new sa}});this.matrix=new M;this.matrixWorld=new M;this.matrixAutoUpdate=A.DefaultMatrixAutoUpdate;this.matrixWorldNeedsUpdate=!1;this.layers=new Sd;this.visible=!0;this.receiveShadow=this.castShadow=!1;this.frustumCulled=!0;this.renderOrder=
-0;this.userData={}}function Qa(){A.call(this);this.type="Camera";this.matrixWorldInverse=new M;this.projectionMatrix=new M}function Jb(a,b,c,d,e,f){Qa.call(this);this.type="OrthographicCamera";this.zoom=1;this.view=null;this.left=a;this.right=b;this.top=c;this.bottom=d;this.near=void 0!==e?e:.1;this.far=void 0!==f?f:2E3;this.updateProjectionMatrix()}function Wa(a,b,c,d,e,f){this.a=a;this.b=b;this.c=c;this.normal=d&&d.isVector3?d:new p;this.vertexNormals=Array.isArray(d)?d:[];this.color=e&&e.isColor?
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-this.uvsNeedUpdate=this.verticesNeedUpdate=this.elementsNeedUpdate=!1}function T(a,b,c){if(Array.isArray(a))throw new TypeError("THREE.BufferAttribute: array should be a Typed Array.");this.name="";this.array=a;this.itemSize=b;this.count=void 0!==a?a.length/b:0;this.normalized=!0===c;this.dynamic=!1;this.updateRange={offset:0,count:-1};this.version=0}function rc(a,b,c){T.call(this,new Int8Array(a),b,c)}function sc(a,b,c){T.call(this,new Uint8Array(a),b,c)}function tc(a,b,c){T.call(this,new Uint8ClampedArray(a),
-b,c)}function uc(a,b,c){T.call(this,new Int16Array(a),b,c)}function kb(a,b,c){T.call(this,new Uint16Array(a),b,c)}function vc(a,b,c){T.call(this,new Int32Array(a),b,c)}function lb(a,b,c){T.call(this,new Uint32Array(a),b,c)}function z(a,b,c){T.call(this,new Float32Array(a),b,c)}function wc(a,b,c){T.call(this,new Float64Array(a),b,c)}function Ce(){this.vertices=[];this.normals=[];this.colors=[];this.uvs=[];this.uvs2=[];this.groups=[];this.morphTargets={};this.skinWeights=[];this.skinIndices=[];this.boundingSphere=
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-b);c.getContext("2d").drawImage(a,0,0,a.width,a.height,0,0,c.width,c.height);console.warn("THREE.WebGLRenderer: image is too big ("+a.width+"x"+a.height+"). Resized to "+c.width+"x"+c.height,a);return c}return a}function l(a){return S.isPowerOfTwo(a.width)&&S.isPowerOfTwo(a.height)}function m(a,b){return a.generateMipmaps&&b&&1003!==a.minFilter&&1006!==a.minFilter}function u(b,c,e,f){a.generateMipmap(b);d.get(c).__maxMipLevel=Math.log2(Math.max(e,f))}function n(b){return 1003===b||1004===b||1005===
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-if(b.isWebGLRenderTargetCube)for(e=0;6>e;e++)a.deleteFramebuffer(c.__webglFramebuffer[e]),c.__webglDepthbuffer&&a.deleteRenderbuffer(c.__webglDepthbuffer[e]);else a.deleteFramebuffer(c.__webglFramebuffer),c.__webglDepthbuffer&&a.deleteRenderbuffer(c.__webglDepthbuffer);d.remove(b.texture);d.remove(b)}g.memory.textures--}function q(b,n){var k=d.get(b);if(b.isVideoTexture){var r=b.id,q=g.render.frame;B[r]!==q&&(B[r]=q,b.update())}if(0<b.version&&k.__version!==b.version)if(r=b.image,void 0===r)console.warn("THREE.WebGLRenderer: Texture marked for update but image is undefined",
-b);else if(!1===r.complete)console.warn("THREE.WebGLRenderer: Texture marked for update but image is incomplete",b);else{void 0===k.__webglInit&&(k.__webglInit=!0,b.addEventListener("dispose",t),k.__webglTexture=a.createTexture(),g.memory.textures++);c.activeTexture(a.TEXTURE0+n);c.bindTexture(a.TEXTURE_2D,k.__webglTexture);a.pixelStorei(a.UNPACK_FLIP_Y_WEBGL,b.flipY);a.pixelStorei(a.UNPACK_PREMULTIPLY_ALPHA_WEBGL,b.premultiplyAlpha);a.pixelStorei(a.UNPACK_ALIGNMENT,b.unpackAlignment);n=h(b.image,
-e.maxTextureSize);(1001!==b.wrapS||1001!==b.wrapT||1003!==b.minFilter&&1006!==b.minFilter)&&!1===l(n)&&(n instanceof HTMLImageElement||n instanceof HTMLCanvasElement||n instanceof ImageBitmap)&&(void 0===G&&(G=document.createElementNS("http://www.w3.org/1999/xhtml","canvas")),G.width=S.floorPowerOfTwo(n.width),G.height=S.floorPowerOfTwo(n.height),G.getContext("2d").drawImage(n,0,0,G.width,G.height),console.warn("THREE.WebGLRenderer: image is not power of two ("+n.width+"x"+n.height+"). Resized to "+
-G.width+"x"+G.height,n),n=G);r=l(n);q=f.convert(b.format);var p=f.convert(b.type);v(a.TEXTURE_2D,b,r);var x=b.mipmaps;if(b.isDepthTexture){var K=a.DEPTH_COMPONENT;if(1015===b.type){if(!w)throw Error("Float Depth Texture only supported in WebGL2.0");K=a.DEPTH_COMPONENT32F}else w&&(K=a.DEPTH_COMPONENT16);1026===b.format&&K===a.DEPTH_COMPONENT&&1012!==b.type&&1014!==b.type&&(console.warn("THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture."),b.type=1012,p=f.convert(b.type));
-1027===b.format&&(K=a.DEPTH_STENCIL,1020!==b.type&&(console.warn("THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture."),b.type=1020,p=f.convert(b.type)));c.texImage2D(a.TEXTURE_2D,0,K,n.width,n.height,0,q,p,null)}else if(b.isDataTexture)if(0<x.length&&r){for(var P=0,y=x.length;P<y;P++)K=x[P],c.texImage2D(a.TEXTURE_2D,P,q,K.width,K.height,0,q,p,K.data);b.generateMipmaps=!1;k.__maxMipLevel=x.length-1}else c.texImage2D(a.TEXTURE_2D,0,q,n.width,n.height,0,q,p,n.data),k.__maxMipLevel=
-0;else if(b.isCompressedTexture){P=0;for(y=x.length;P<y;P++)K=x[P],1023!==b.format&&1022!==b.format?-1<c.getCompressedTextureFormats().indexOf(q)?c.compressedTexImage2D(a.TEXTURE_2D,P,q,K.width,K.height,0,K.data):console.warn("THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()"):c.texImage2D(a.TEXTURE_2D,P,q,K.width,K.height,0,q,p,K.data);k.__maxMipLevel=x.length-1}else if(0<x.length&&r){P=0;for(y=x.length;P<y;P++)K=x[P],c.texImage2D(a.TEXTURE_2D,P,q,q,
-p,K);b.generateMipmaps=!1;k.__maxMipLevel=x.length-1}else c.texImage2D(a.TEXTURE_2D,0,q,q,p,n),k.__maxMipLevel=0;m(b,r)&&u(a.TEXTURE_2D,b,n.width,n.height);k.__version=b.version;if(b.onUpdate)b.onUpdate(b);return}c.activeTexture(a.TEXTURE0+n);c.bindTexture(a.TEXTURE_2D,k.__webglTexture)}function v(c,g,h){h?(a.texParameteri(c,a.TEXTURE_WRAP_S,f.convert(g.wrapS)),a.texParameteri(c,a.TEXTURE_WRAP_T,f.convert(g.wrapT)),a.texParameteri(c,a.TEXTURE_MAG_FILTER,f.convert(g.magFilter)),a.texParameteri(c,a.TEXTURE_MIN_FILTER,
-f.convert(g.minFilter))):(a.texParameteri(c,a.TEXTURE_WRAP_S,a.CLAMP_TO_EDGE),a.texParameteri(c,a.TEXTURE_WRAP_T,a.CLAMP_TO_EDGE),1001===g.wrapS&&1001===g.wrapT||console.warn("THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.",g),a.texParameteri(c,a.TEXTURE_MAG_FILTER,n(g.magFilter)),a.texParameteri(c,a.TEXTURE_MIN_FILTER,n(g.minFilter)),1003!==g.minFilter&&1006!==g.minFilter&&console.warn("THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.",
-g));!(h=b.get("EXT_texture_filter_anisotropic"))||1015===g.type&&null===b.get("OES_texture_float_linear")||1016===g.type&&null===b.get("OES_texture_half_float_linear")||!(1<g.anisotropy||d.get(g).__currentAnisotropy)||(a.texParameterf(c,h.TEXTURE_MAX_ANISOTROPY_EXT,Math.min(g.anisotropy,e.getMaxAnisotropy())),d.get(g).__currentAnisotropy=g.anisotropy)}function p(b,e,g,h){var l=f.convert(e.texture.format),m=f.convert(e.texture.type);c.texImage2D(h,0,l,e.width,e.height,0,l,m,null);a.bindFramebuffer(a.FRAMEBUFFER,
-b);a.framebufferTexture2D(a.FRAMEBUFFER,g,h,d.get(e.texture).__webglTexture,0);a.bindFramebuffer(a.FRAMEBUFFER,null)}function y(b,c){a.bindRenderbuffer(a.RENDERBUFFER,b);c.depthBuffer&&!c.stencilBuffer?(a.renderbufferStorage(a.RENDERBUFFER,a.DEPTH_COMPONENT16,c.width,c.height),a.framebufferRenderbuffer(a.FRAMEBUFFER,a.DEPTH_ATTACHMENT,a.RENDERBUFFER,b)):c.depthBuffer&&c.stencilBuffer?(a.renderbufferStorage(a.RENDERBUFFER,a.DEPTH_STENCIL,c.width,c.height),a.framebufferRenderbuffer(a.FRAMEBUFFER,a.DEPTH_STENCIL_ATTACHMENT,
-a.RENDERBUFFER,b)):a.renderbufferStorage(a.RENDERBUFFER,a.RGBA4,c.width,c.height);a.bindRenderbuffer(a.RENDERBUFFER,null)}var w="undefined"!==typeof WebGL2RenderingContext&&a instanceof WebGL2RenderingContext,B={},G;this.setTexture2D=q;this.setTextureCube=function(b,n){var k=d.get(b);if(6===b.image.length)if(0<b.version&&k.__version!==b.version){k.__image__webglTextureCube||(b.addEventListener("dispose",t),k.__image__webglTextureCube=a.createTexture(),g.memory.textures++);c.activeTexture(a.TEXTURE0+
-n);c.bindTexture(a.TEXTURE_CUBE_MAP,k.__image__webglTextureCube);a.pixelStorei(a.UNPACK_FLIP_Y_WEBGL,b.flipY);n=b&&b.isCompressedTexture;for(var r=b.image[0]&&b.image[0].isDataTexture,q=[],p=0;6>p;p++)q[p]=n||r?r?b.image[p].image:b.image[p]:h(b.image[p],e.maxCubemapSize);var x=q[0],w=l(x),K=f.convert(b.format),y=f.convert(b.type);v(a.TEXTURE_CUBE_MAP,b,w);for(p=0;6>p;p++)if(n)for(var B,G=q[p].mipmaps,P=0,C=G.length;P<C;P++)B=G[P],1023!==b.format&&1022!==b.format?-1<c.getCompressedTextureFormats().indexOf(K)?
-c.compressedTexImage2D(a.TEXTURE_CUBE_MAP_POSITIVE_X+p,P,K,B.width,B.height,0,B.data):console.warn("THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()"):c.texImage2D(a.TEXTURE_CUBE_MAP_POSITIVE_X+p,P,K,B.width,B.height,0,K,y,B.data);else r?c.texImage2D(a.TEXTURE_CUBE_MAP_POSITIVE_X+p,0,K,q[p].width,q[p].height,0,K,y,q[p].data):c.texImage2D(a.TEXTURE_CUBE_MAP_POSITIVE_X+p,0,K,K,y,q[p]);k.__maxMipLevel=n?G.length-1:0;m(b,w)&&u(a.TEXTURE_CUBE_MAP,b,x.width,
-x.height);k.__version=b.version;if(b.onUpdate)b.onUpdate(b)}else c.activeTexture(a.TEXTURE0+n),c.bindTexture(a.TEXTURE_CUBE_MAP,k.__image__webglTextureCube)};this.setTextureCubeDynamic=function(b,e){c.activeTexture(a.TEXTURE0+e);c.bindTexture(a.TEXTURE_CUBE_MAP,d.get(b).__webglTexture)};this.setupRenderTarget=function(b){var e=d.get(b),f=d.get(b.texture);b.addEventListener("dispose",k);f.__webglTexture=a.createTexture();g.memory.textures++;var h=!0===b.isWebGLRenderTargetCube,n=l(b);if(h){e.__webglFramebuffer=
-[];for(var t=0;6>t;t++)e.__webglFramebuffer[t]=a.createFramebuffer()}else e.__webglFramebuffer=a.createFramebuffer();if(h){c.bindTexture(a.TEXTURE_CUBE_MAP,f.__webglTexture);v(a.TEXTURE_CUBE_MAP,b.texture,n);for(t=0;6>t;t++)p(e.__webglFramebuffer[t],b,a.COLOR_ATTACHMENT0,a.TEXTURE_CUBE_MAP_POSITIVE_X+t);m(b.texture,n)&&u(a.TEXTURE_CUBE_MAP,b.texture,b.width,b.height);c.bindTexture(a.TEXTURE_CUBE_MAP,null)}else c.bindTexture(a.TEXTURE_2D,f.__webglTexture),v(a.TEXTURE_2D,b.texture,n),p(e.__webglFramebuffer,
-b,a.COLOR_ATTACHMENT0,a.TEXTURE_2D),m(b.texture,n)&&u(a.TEXTURE_2D,b.texture,b.width,b.height),c.bindTexture(a.TEXTURE_2D,null);if(b.depthBuffer){e=d.get(b);f=!0===b.isWebGLRenderTargetCube;if(b.depthTexture){if(f)throw Error("target.depthTexture not supported in Cube render targets");if(b&&b.isWebGLRenderTargetCube)throw Error("Depth Texture with cube render targets is not supported");a.bindFramebuffer(a.FRAMEBUFFER,e.__webglFramebuffer);if(!b.depthTexture||!b.depthTexture.isDepthTexture)throw Error("renderTarget.depthTexture must be an instance of THREE.DepthTexture");
-d.get(b.depthTexture).__webglTexture&&b.depthTexture.image.width===b.width&&b.depthTexture.image.height===b.height||(b.depthTexture.image.width=b.width,b.depthTexture.image.height=b.height,b.depthTexture.needsUpdate=!0);q(b.depthTexture,0);e=d.get(b.depthTexture).__webglTexture;if(1026===b.depthTexture.format)a.framebufferTexture2D(a.FRAMEBUFFER,a.DEPTH_ATTACHMENT,a.TEXTURE_2D,e,0);else if(1027===b.depthTexture.format)a.framebufferTexture2D(a.FRAMEBUFFER,a.DEPTH_STENCIL_ATTACHMENT,a.TEXTURE_2D,e,
-0);else throw Error("Unknown depthTexture format");}else if(f)for(e.__webglDepthbuffer=[],f=0;6>f;f++)a.bindFramebuffer(a.FRAMEBUFFER,e.__webglFramebuffer[f]),e.__webglDepthbuffer[f]=a.createRenderbuffer(),y(e.__webglDepthbuffer[f],b);else a.bindFramebuffer(a.FRAMEBUFFER,e.__webglFramebuffer),e.__webglDepthbuffer=a.createRenderbuffer(),y(e.__webglDepthbuffer,b);a.bindFramebuffer(a.FRAMEBUFFER,null)}};this.updateRenderTargetMipmap=function(b){var e=b.texture,f=l(b);if(m(e,f)){f=b.isWebGLRenderTargetCube?
-a.TEXTURE_CUBE_MAP:a.TEXTURE_2D;var g=d.get(e).__webglTexture;c.bindTexture(f,g);u(f,e,b.width,b.height);c.bindTexture(f,null)}}}function Ve(a,b){return{convert:function(c){if(1E3===c)return a.REPEAT;if(1001===c)return a.CLAMP_TO_EDGE;if(1002===c)return a.MIRRORED_REPEAT;if(1003===c)return a.NEAREST;if(1004===c)return a.NEAREST_MIPMAP_NEAREST;if(1005===c)return a.NEAREST_MIPMAP_LINEAR;if(1006===c)return a.LINEAR;if(1007===c)return a.LINEAR_MIPMAP_NEAREST;if(1008===c)return a.LINEAR_MIPMAP_LINEAR;
-if(1009===c)return a.UNSIGNED_BYTE;if(1017===c)return a.UNSIGNED_SHORT_4_4_4_4;if(1018===c)return a.UNSIGNED_SHORT_5_5_5_1;if(1019===c)return a.UNSIGNED_SHORT_5_6_5;if(1010===c)return a.BYTE;if(1011===c)return a.SHORT;if(1012===c)return a.UNSIGNED_SHORT;if(1013===c)return a.INT;if(1014===c)return a.UNSIGNED_INT;if(1015===c)return a.FLOAT;if(1016===c){var d=b.get("OES_texture_half_float");if(null!==d)return d.HALF_FLOAT_OES}if(1021===c)return a.ALPHA;if(1022===c)return a.RGB;if(1023===c)return a.RGBA;
-if(1024===c)return a.LUMINANCE;if(1025===c)return a.LUMINANCE_ALPHA;if(1026===c)return a.DEPTH_COMPONENT;if(1027===c)return a.DEPTH_STENCIL;if(100===c)return a.FUNC_ADD;if(101===c)return a.FUNC_SUBTRACT;if(102===c)return a.FUNC_REVERSE_SUBTRACT;if(200===c)return a.ZERO;if(201===c)return a.ONE;if(202===c)return a.SRC_COLOR;if(203===c)return a.ONE_MINUS_SRC_COLOR;if(204===c)return a.SRC_ALPHA;if(205===c)return a.ONE_MINUS_SRC_ALPHA;if(206===c)return a.DST_ALPHA;if(207===c)return a.ONE_MINUS_DST_ALPHA;
-if(208===c)return a.DST_COLOR;if(209===c)return a.ONE_MINUS_DST_COLOR;if(210===c)return a.SRC_ALPHA_SATURATE;if(33776===c||33777===c||33778===c||33779===c)if(d=b.get("WEBGL_compressed_texture_s3tc"),null!==d){if(33776===c)return d.COMPRESSED_RGB_S3TC_DXT1_EXT;if(33777===c)return d.COMPRESSED_RGBA_S3TC_DXT1_EXT;if(33778===c)return d.COMPRESSED_RGBA_S3TC_DXT3_EXT;if(33779===c)return d.COMPRESSED_RGBA_S3TC_DXT5_EXT}if(35840===c||35841===c||35842===c||35843===c)if(d=b.get("WEBGL_compressed_texture_pvrtc"),
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-null!==d)return c;if(103===c||104===c)if(d=b.get("EXT_blend_minmax"),null!==d){if(103===c)return d.MIN_EXT;if(104===c)return d.MAX_EXT}return 1020===c&&(d=b.get("WEBGL_depth_texture"),null!==d)?d.UNSIGNED_INT_24_8_WEBGL:0}}}function la(a,b,c,d){Qa.call(this);this.type="PerspectiveCamera";this.fov=void 0!==a?a:50;this.zoom=1;this.near=void 0!==c?c:.1;this.far=void 0!==d?d:2E3;this.focus=10;this.aspect=void 0!==b?b:1;this.view=null;this.filmGauge=35;this.filmOffset=0;this.updateProjectionMatrix()}function qd(a){la.call(this);
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-z.push(a,null,a.material,Nb.z,null);else if(a.isMesh||a.isLine||a.isPoints)if(a.isSkinnedMesh&&a.skeleton.update(),!a.frustumCulled||ha.intersectsObject(a)){c&&Nb.setFromMatrixPosition(a.matrixWorld).applyMatrix4(pd);var d=sa.update(a),e=a.material;if(Array.isArray(e))for(var f=d.groups,g=0,h=f.length;g<h;g++){var l=f[g],n=e[l.materialIndex];n&&n.visible&&z.push(a,d,n,Nb.z,l)}else e.visible&&z.push(a,d,e,Nb.z,null)}a=a.children;g=0;for(h=a.length;g<h;g++)m(a[g],b,c)}}function u(a,b,c,d){for(var e=
-0,f=a.length;e<f;e++){var g=a[e],h=g.object,l=g.geometry,m=void 0===d?g.material:d;g=g.group;if(c.isArrayCamera){T=c;for(var u=c.cameras,t=0,k=u.length;t<k;t++){var r=u[t];if(h.layers.test(r.layers)){var q=r.bounds;ba.viewport(ob.set(q.x*J,q.y*W,q.z*J,q.w*W).multiplyScalar(R));n(h,b,r,l,m,g)}}}else T=null,n(h,b,c,l,m,g)}}function n(a,b,c,d,e,f){a.onBeforeRender(A,b,c,d,e,f);Z=pa.get(b,T||c);a.modelViewMatrix.multiplyMatrices(c.matrixWorldInverse,a.matrixWorld);a.normalMatrix.getNormalMatrix(a.modelViewMatrix);
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-"lightsHash",g.state.hash);else if(void 0!==c.shaderID)return;m=!1}m&&(c.shaderID?(l=rb[c.shaderID],d.shader={name:a.type,uniforms:Da.clone(l.uniforms),vertexShader:l.vertexShader,fragmentShader:l.fragmentShader}):d.shader={name:a.type,uniforms:a.uniforms,vertexShader:a.vertexShader,fragmentShader:a.fragmentShader},a.onBeforeCompile(d.shader,A),l=oa.acquireProgram(a,d.shader,c,h),d.program=l,a.program=l);c=l.getAttributes();if(a.morphTargets)for(h=a.numSupportedMorphTargets=0;h<A.maxMorphTargets;h++)0<=
-c["morphTarget"+h]&&a.numSupportedMorphTargets++;if(a.morphNormals)for(h=a.numSupportedMorphNormals=0;h<A.maxMorphNormals;h++)0<=c["morphNormal"+h]&&a.numSupportedMorphNormals++;c=d.shader.uniforms;if(!a.isShaderMaterial&&!a.isRawShaderMaterial||!0===a.clipping)d.numClippingPlanes=Ga.numPlanes,d.numIntersection=Ga.numIntersection,c.clippingPlanes=Ga.uniform;d.fog=b;d.lightsHash=g.state.hash;a.lights&&(c.ambientLightColor.value=g.state.ambient,c.directionalLights.value=g.state.directional,c.spotLights.value=
-g.state.spot,c.rectAreaLights.value=g.state.rectArea,c.pointLights.value=g.state.point,c.hemisphereLights.value=g.state.hemi,c.directionalShadowMap.value=g.state.directionalShadowMap,c.directionalShadowMatrix.value=g.state.directionalShadowMatrix,c.spotShadowMap.value=g.state.spotShadowMap,c.spotShadowMatrix.value=g.state.spotShadowMatrix,c.pointShadowMap.value=g.state.pointShadowMap,c.pointShadowMatrix.value=g.state.pointShadowMatrix);a=d.program.getUniforms();a=bb.seqWithValue(a.seq,c);d.uniformsList=
-a}function k(a,b,c,d){aa=0;var e=X.get(c),f=Z.state.lights;od&&(la||a!==O)&&Ga.setState(c.clippingPlanes,c.clipIntersection,c.clipShadows,a,e,a===O&&c.id===Q);!1===c.needsUpdate&&(void 0===e.program?c.needsUpdate=!0:c.fog&&e.fog!==b?c.needsUpdate=!0:c.lights&&e.lightsHash!==f.state.hash?c.needsUpdate=!0:void 0===e.numClippingPlanes||e.numClippingPlanes===Ga.numPlanes&&e.numIntersection===Ga.numIntersection||(c.needsUpdate=!0));c.needsUpdate&&(t(c,b,d),c.needsUpdate=!1);var g=!1,h=!1,l=!1;f=e.program;
-var m=f.getUniforms(),n=e.shader.uniforms;ba.useProgram(f.program)&&(l=h=g=!0);c.id!==Q&&(Q=c.id,h=!0);if(g||a!==O){m.setValue(D,"projectionMatrix",a.projectionMatrix);Ra.logarithmicDepthBuffer&&m.setValue(D,"logDepthBufFC",2/(Math.log(a.far+1)/Math.LN2));O!==(T||a)&&(O=T||a,l=h=!0);if(c.isShaderMaterial||c.isMeshPhongMaterial||c.isMeshStandardMaterial||c.envMap)g=m.map.cameraPosition,void 0!==g&&g.setValue(D,Nb.setFromMatrixPosition(a.matrixWorld));(c.isMeshPhongMaterial||c.isMeshLambertMaterial||
-c.isMeshBasicMaterial||c.isMeshStandardMaterial||c.isShaderMaterial||c.skinning)&&m.setValue(D,"viewMatrix",a.matrixWorldInverse)}if(c.skinning&&(m.setOptional(D,d,"bindMatrix"),m.setOptional(D,d,"bindMatrixInverse"),a=d.skeleton))if(g=a.bones,Ra.floatVertexTextures){if(void 0===a.boneTexture){g=Math.sqrt(4*g.length);g=S.ceilPowerOfTwo(g);g=Math.max(g,4);var u=new Float32Array(g*g*4);u.set(a.boneMatrices);var k=new ib(u,g,g,1023,1015);k.needsUpdate=!0;a.boneMatrices=u;a.boneTexture=k;a.boneTextureSize=
-g}m.setValue(D,"boneTexture",a.boneTexture);m.setValue(D,"boneTextureSize",a.boneTextureSize)}else m.setOptional(D,a,"boneMatrices");h&&(m.setValue(D,"toneMappingExposure",A.toneMappingExposure),m.setValue(D,"toneMappingWhitePoint",A.toneMappingWhitePoint),c.lights&&(h=l,n.ambientLightColor.needsUpdate=h,n.directionalLights.needsUpdate=h,n.pointLights.needsUpdate=h,n.spotLights.needsUpdate=h,n.rectAreaLights.needsUpdate=h,n.hemisphereLights.needsUpdate=h),b&&c.fog&&(n.fogColor.value=b.color,b.isFog?
-(n.fogNear.value=b.near,n.fogFar.value=b.far):b.isFogExp2&&(n.fogDensity.value=b.density)),c.isMeshBasicMaterial?q(n,c):c.isMeshLambertMaterial?(q(n,c),c.emissiveMap&&(n.emissiveMap.value=c.emissiveMap)):c.isMeshPhongMaterial?(q(n,c),c.isMeshToonMaterial?(v(n,c),c.gradientMap&&(n.gradientMap.value=c.gradientMap)):v(n,c)):c.isMeshStandardMaterial?(q(n,c),c.isMeshPhysicalMaterial&&(n.clearCoat.value=c.clearCoat,n.clearCoatRoughness.value=c.clearCoatRoughness),n.roughness.value=c.roughness,n.metalness.value=
-c.metalness,c.roughnessMap&&(n.roughnessMap.value=c.roughnessMap),c.metalnessMap&&(n.metalnessMap.value=c.metalnessMap),c.emissiveMap&&(n.emissiveMap.value=c.emissiveMap),c.bumpMap&&(n.bumpMap.value=c.bumpMap,n.bumpScale.value=c.bumpScale),c.normalMap&&(n.normalMap.value=c.normalMap,n.normalScale.value.copy(c.normalScale)),c.displacementMap&&(n.displacementMap.value=c.displacementMap,n.displacementScale.value=c.displacementScale,n.displacementBias.value=c.displacementBias),c.envMap&&(n.envMapIntensity.value=
-c.envMapIntensity)):c.isMeshDepthMaterial?(q(n,c),c.displacementMap&&(n.displacementMap.value=c.displacementMap,n.displacementScale.value=c.displacementScale,n.displacementBias.value=c.displacementBias)):c.isMeshDistanceMaterial?(q(n,c),c.displacementMap&&(n.displacementMap.value=c.displacementMap,n.displacementScale.value=c.displacementScale,n.displacementBias.value=c.displacementBias),n.referencePosition.value.copy(c.referencePosition),n.nearDistance.value=c.nearDistance,n.farDistance.value=c.farDistance):
-c.isMeshNormalMaterial?(q(n,c),c.bumpMap&&(n.bumpMap.value=c.bumpMap,n.bumpScale.value=c.bumpScale),c.normalMap&&(n.normalMap.value=c.normalMap,n.normalScale.value.copy(c.normalScale)),c.displacementMap&&(n.displacementMap.value=c.displacementMap,n.displacementScale.value=c.displacementScale,n.displacementBias.value=c.displacementBias)):c.isLineBasicMaterial?(n.diffuse.value=c.color,n.opacity.value=c.opacity,c.isLineDashedMaterial&&(n.dashSize.value=c.dashSize,n.totalSize.value=c.dashSize+c.gapSize,
-n.scale.value=c.scale)):c.isPointsMaterial?(n.diffuse.value=c.color,n.opacity.value=c.opacity,n.size.value=c.size*R,n.scale.value=.5*W,n.map.value=c.map,null!==c.map&&(!0===c.map.matrixAutoUpdate&&(b=c.map.offset,h=c.map.repeat,l=c.map.center,c.map.matrix.setUvTransform(b.x,b.y,h.x,h.y,c.map.rotation,l.x,l.y)),n.uvTransform.value.copy(c.map.matrix))):c.isShadowMaterial&&(n.color.value=c.color,n.opacity.value=c.opacity),void 0!==n.ltc_1&&(n.ltc_1.value=L.LTC_1),void 0!==n.ltc_2&&(n.ltc_2.value=L.LTC_2),
-bb.upload(D,e.uniformsList,n,A));c.isShaderMaterial&&!0===c.uniformsNeedUpdate&&(bb.upload(D,e.uniformsList,n,A),c.uniformsNeedUpdate=!1);m.setValue(D,"modelViewMatrix",d.modelViewMatrix);m.setValue(D,"normalMatrix",d.normalMatrix);m.setValue(D,"modelMatrix",d.matrixWorld);return f}function q(a,b){a.opacity.value=b.opacity;b.color&&(a.diffuse.value=b.color);b.emissive&&a.emissive.value.copy(b.emissive).multiplyScalar(b.emissiveIntensity);b.map&&(a.map.value=b.map);b.alphaMap&&(a.alphaMap.value=b.alphaMap);
-b.specularMap&&(a.specularMap.value=b.specularMap);b.envMap&&(a.envMap.value=b.envMap,a.flipEnvMap.value=b.envMap&&b.envMap.isCubeTexture?-1:1,a.reflectivity.value=b.reflectivity,a.refractionRatio.value=b.refractionRatio,a.maxMipLevel.value=X.get(b.envMap).__maxMipLevel);b.lightMap&&(a.lightMap.value=b.lightMap,a.lightMapIntensity.value=b.lightMapIntensity);b.aoMap&&(a.aoMap.value=b.aoMap,a.aoMapIntensity.value=b.aoMapIntensity);if(b.map)var c=b.map;else b.specularMap?c=b.specularMap:b.displacementMap?
-c=b.displacementMap:b.normalMap?c=b.normalMap:b.bumpMap?c=b.bumpMap:b.roughnessMap?c=b.roughnessMap:b.metalnessMap?c=b.metalnessMap:b.alphaMap?c=b.alphaMap:b.emissiveMap&&(c=b.emissiveMap);if(void 0!==c){c.isWebGLRenderTarget&&(c=c.texture);if(!0===c.matrixAutoUpdate){b=c.offset;var d=c.repeat,e=c.center;c.matrix.setUvTransform(b.x,b.y,d.x,d.y,c.rotation,e.x,e.y)}a.uvTransform.value.copy(c.matrix)}}function v(a,b){a.specular.value=b.specular;a.shininess.value=Math.max(b.shininess,1E-4);b.emissiveMap&&
-(a.emissiveMap.value=b.emissiveMap);b.bumpMap&&(a.bumpMap.value=b.bumpMap,a.bumpScale.value=b.bumpScale);b.normalMap&&(a.normalMap.value=b.normalMap,a.normalScale.value.copy(b.normalScale));b.displacementMap&&(a.displacementMap.value=b.displacementMap,a.displacementScale.value=b.displacementScale,a.displacementBias.value=b.displacementBias)}console.log("THREE.WebGLRenderer","91");a=a||{};var x=void 0!==a.canvas?a.canvas:document.createElementNS("http://www.w3.org/1999/xhtml","canvas"),y=void 0!==
-a.context?a.context:null,w=void 0!==a.alpha?a.alpha:!1,B=void 0!==a.depth?a.depth:!0,G=void 0!==a.stencil?a.stencil:!0,K=void 0!==a.antialias?a.antialias:!1,P=void 0!==a.premultipliedAlpha?a.premultipliedAlpha:!0,H=void 0!==a.preserveDrawingBuffer?a.preserveDrawingBuffer:!1,C=void 0!==a.powerPreference?a.powerPreference:"default",z=null,Z=null;this.domElement=x;this.context=null;this.sortObjects=this.autoClearStencil=this.autoClearDepth=this.autoClearColor=this.autoClear=!0;this.clippingPlanes=[];
-this.localClippingEnabled=!1;this.gammaFactor=2;this.physicallyCorrectLights=this.gammaOutput=this.gammaInput=!1;this.toneMappingWhitePoint=this.toneMappingExposure=this.toneMapping=1;this.maxMorphTargets=8;this.maxMorphNormals=4;var A=this,E=!1,F=null,I=null,Q=-1,N="",O=null,T=null,ob=new ea,V=new ea,U=null,aa=0,J=x.width,W=x.height,R=1,Y=new ea(0,0,J,W),ca=new ea(0,0,J,W),ja=!1,ha=new ld,Ga=new Gf,od=!1,la=!1,pd=new M,Nb=new p;try{w={alpha:w,depth:B,stencil:G,antialias:K,premultipliedAlpha:P,preserveDrawingBuffer:H,
-powerPreference:C};x.addEventListener("webglcontextlost",c,!1);x.addEventListener("webglcontextrestored",d,!1);var D=y||x.getContext("webgl",w)||x.getContext("experimental-webgl",w);if(null===D){if(null!==x.getContext("webgl"))throw Error("Error creating WebGL context with your selected attributes.");throw Error("Error creating WebGL context.");}void 0===D.getShaderPrecisionFormat&&(D.getShaderPrecisionFormat=function(){return{rangeMin:1,rangeMax:1,precision:1}})}catch(Gg){console.error("THREE.WebGLRenderer: "+
-Gg.message)}var ka,Ra,ba,da,X,fa,qa,ra,sa,oa,ua,pa,ma,wa,xa,za,Aa,ia;b();var na=new We(A);this.vr=na;var Ca=new Ue(A,sa,Ra.maxTextureSize);this.shadowMap=Ca;this.getContext=function(){return D};this.getContextAttributes=function(){return D.getContextAttributes()};this.forceContextLoss=function(){var a=ka.get("WEBGL_lose_context");a&&a.loseContext()};this.forceContextRestore=function(){var a=ka.get("WEBGL_lose_context");a&&a.restoreContext()};this.getPixelRatio=function(){return R};this.setPixelRatio=
-function(a){void 0!==a&&(R=a,this.setSize(J,W,!1))};this.getSize=function(){return{width:J,height:W}};this.setSize=function(a,b,c){var d=na.getDevice();d&&d.isPresenting?console.warn("THREE.WebGLRenderer: Can't change size while VR device is presenting."):(J=a,W=b,x.width=a*R,x.height=b*R,!1!==c&&(x.style.width=a+"px",x.style.height=b+"px"),this.setViewport(0,0,a,b))};this.getDrawingBufferSize=function(){return{width:J*R,height:W*R}};this.setDrawingBufferSize=function(a,b,c){J=a;W=b;R=c;x.width=a*
-c;x.height=b*c;this.setViewport(0,0,a,b)};this.getCurrentViewport=function(){return ob};this.setViewport=function(a,b,c,d){Y.set(a,W-b-d,c,d);ba.viewport(ob.copy(Y).multiplyScalar(R))};this.setScissor=function(a,b,c,d){ca.set(a,W-b-d,c,d);ba.scissor(V.copy(ca).multiplyScalar(R))};this.setScissorTest=function(a){ba.setScissorTest(ja=a)};this.getClearColor=function(){return ma.getClearColor()};this.setClearColor=function(){ma.setClearColor.apply(ma,arguments)};this.getClearAlpha=function(){return ma.getClearAlpha()};
-this.setClearAlpha=function(){ma.setClearAlpha.apply(ma,arguments)};this.clear=function(a,b,c){var d=0;if(void 0===a||a)d|=D.COLOR_BUFFER_BIT;if(void 0===b||b)d|=D.DEPTH_BUFFER_BIT;if(void 0===c||c)d|=D.STENCIL_BUFFER_BIT;D.clear(d)};this.clearColor=function(){this.clear(!0,!1,!1)};this.clearDepth=function(){this.clear(!1,!0,!1)};this.clearStencil=function(){this.clear(!1,!1,!0)};this.clearTarget=function(a,b,c,d){this.setRenderTarget(a);this.clear(b,c,d)};this.dispose=function(){x.removeEventListener("webglcontextlost",
-c,!1);x.removeEventListener("webglcontextrestored",d,!1);ua.dispose();pa.dispose();X.dispose();sa.dispose();na.dispose();va=!1};this.renderBufferImmediate=function(a,b,c){ba.initAttributes();var d=X.get(a);a.hasPositions&&!d.position&&(d.position=D.createBuffer());a.hasNormals&&!d.normal&&(d.normal=D.createBuffer());a.hasUvs&&!d.uv&&(d.uv=D.createBuffer());a.hasColors&&!d.color&&(d.color=D.createBuffer());b=b.getAttributes();a.hasPositions&&(D.bindBuffer(D.ARRAY_BUFFER,d.position),D.bufferData(D.ARRAY_BUFFER,
-a.positionArray,D.DYNAMIC_DRAW),ba.enableAttribute(b.position),D.vertexAttribPointer(b.position,3,D.FLOAT,!1,0,0));if(a.hasNormals){D.bindBuffer(D.ARRAY_BUFFER,d.normal);if(!c.isMeshPhongMaterial&&!c.isMeshStandardMaterial&&!c.isMeshNormalMaterial&&!0===c.flatShading)for(var e=0,f=3*a.count;e<f;e+=9){var g=a.normalArray,h=(g[e+0]+g[e+3]+g[e+6])/3,l=(g[e+1]+g[e+4]+g[e+7])/3,m=(g[e+2]+g[e+5]+g[e+8])/3;g[e+0]=h;g[e+1]=l;g[e+2]=m;g[e+3]=h;g[e+4]=l;g[e+5]=m;g[e+6]=h;g[e+7]=l;g[e+8]=m}D.bufferData(D.ARRAY_BUFFER,
-a.normalArray,D.DYNAMIC_DRAW);ba.enableAttribute(b.normal);D.vertexAttribPointer(b.normal,3,D.FLOAT,!1,0,0)}a.hasUvs&&c.map&&(D.bindBuffer(D.ARRAY_BUFFER,d.uv),D.bufferData(D.ARRAY_BUFFER,a.uvArray,D.DYNAMIC_DRAW),ba.enableAttribute(b.uv),D.vertexAttribPointer(b.uv,2,D.FLOAT,!1,0,0));a.hasColors&&0!==c.vertexColors&&(D.bindBuffer(D.ARRAY_BUFFER,d.color),D.bufferData(D.ARRAY_BUFFER,a.colorArray,D.DYNAMIC_DRAW),ba.enableAttribute(b.color),D.vertexAttribPointer(b.color,3,D.FLOAT,!1,0,0));ba.disableUnusedAttributes();
-D.drawArrays(D.TRIANGLES,0,a.count);a.count=0};this.renderBufferDirect=function(a,b,c,d,e,f){var g=e.isMesh&&0>e.matrixWorld.determinant();ba.setMaterial(d,g);var h=k(a,b,d,e);a=c.id+"_"+h.id+"_"+(!0===d.wireframe);var l=!1;a!==N&&(N=a,l=!0);e.morphTargetInfluences&&(wa.update(e,c,d,h),l=!0);g=c.index;var m=c.attributes.position;b=1;!0===d.wireframe&&(g=ra.getWireframeAttribute(c),b=2);a=xa;if(null!==g){var n=qa.get(g);a=za;a.setIndex(n)}if(l){l=void 0;if(c&&c.isInstancedBufferGeometry&&null===ka.get("ANGLE_instanced_arrays"))console.error("THREE.WebGLRenderer.setupVertexAttributes: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.");
-else{void 0===l&&(l=0);ba.initAttributes();var u=c.attributes;h=h.getAttributes();var t=d.defaultAttributeValues;for(K in h){var r=h[K];if(0<=r){var q=u[K];if(void 0!==q){var p=q.normalized,v=q.itemSize,x=qa.get(q);if(void 0!==x){var w=x.buffer,B=x.type;x=x.bytesPerElement;if(q.isInterleavedBufferAttribute){var y=q.data,G=y.stride;q=q.offset;y&&y.isInstancedInterleavedBuffer?(ba.enableAttributeAndDivisor(r,y.meshPerAttribute),void 0===c.maxInstancedCount&&(c.maxInstancedCount=y.meshPerAttribute*y.count)):
-ba.enableAttribute(r);D.bindBuffer(D.ARRAY_BUFFER,w);D.vertexAttribPointer(r,v,B,p,G*x,(l*G+q)*x)}else q.isInstancedBufferAttribute?(ba.enableAttributeAndDivisor(r,q.meshPerAttribute),void 0===c.maxInstancedCount&&(c.maxInstancedCount=q.meshPerAttribute*q.count)):ba.enableAttribute(r),D.bindBuffer(D.ARRAY_BUFFER,w),D.vertexAttribPointer(r,v,B,p,0,l*v*x)}}else if(void 0!==t&&(p=t[K],void 0!==p))switch(p.length){case 2:D.vertexAttrib2fv(r,p);break;case 3:D.vertexAttrib3fv(r,p);break;case 4:D.vertexAttrib4fv(r,
-p);break;default:D.vertexAttrib1fv(r,p)}}}ba.disableUnusedAttributes()}null!==g&&D.bindBuffer(D.ELEMENT_ARRAY_BUFFER,n.buffer)}n=Infinity;null!==g?n=g.count:void 0!==m&&(n=m.count);g=c.drawRange.start*b;m=null!==f?f.start*b:0;var K=Math.max(g,m);f=Math.max(0,Math.min(n,g+c.drawRange.count*b,m+(null!==f?f.count*b:Infinity))-1-K+1);if(0!==f){if(e.isMesh)if(!0===d.wireframe)ba.setLineWidth(d.wireframeLinewidth*(null===F?R:1)),a.setMode(D.LINES);else switch(e.drawMode){case 0:a.setMode(D.TRIANGLES);break;
-case 1:a.setMode(D.TRIANGLE_STRIP);break;case 2:a.setMode(D.TRIANGLE_FAN)}else e.isLine?(d=d.linewidth,void 0===d&&(d=1),ba.setLineWidth(d*(null===F?R:1)),e.isLineSegments?a.setMode(D.LINES):e.isLineLoop?a.setMode(D.LINE_LOOP):a.setMode(D.LINE_STRIP)):e.isPoints&&a.setMode(D.POINTS);c&&c.isInstancedBufferGeometry?0<c.maxInstancedCount&&a.renderInstances(c,K,f):a.render(K,f)}};this.compile=function(a,b){Z=pa.get(a,b);Z.init();a.traverse(function(a){a.isLight&&(Z.pushLight(a),a.castShadow&&Z.pushShadow(a))});
-Z.setupLights(b);a.traverse(function(b){if(b.material)if(Array.isArray(b.material))for(var c=0;c<b.material.length;c++)t(b.material[c],a.fog,b);else t(b.material,a.fog,b)})};var va=!1,Ba=null;this.animate=function(a){Ba=a;null!==Ba?va||(h(),va=!0):va=!1};this.render=function(a,b,c,d){if(!b||!b.isCamera)console.error("THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.");else if(!E){N="";Q=-1;O=null;!0===a.autoUpdate&&a.updateMatrixWorld();null===b.parent&&b.updateMatrixWorld();
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-q;u[15]=p;return this},identity:function(){this.set(1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1);return this},clone:function(){return(new M).fromArray(this.elements)},copy:function(a){var b=this.elements;a=a.elements;b[0]=a[0];b[1]=a[1];b[2]=a[2];b[3]=a[3];b[4]=a[4];b[5]=a[5];b[6]=a[6];b[7]=a[7];b[8]=a[8];b[9]=a[9];b[10]=a[10];b[11]=a[11];b[12]=a[12];b[13]=a[13];b[14]=a[14];b[15]=a[15];return this},copyPosition:function(a){var b=this.elements;a=a.elements;b[12]=a[12];b[13]=a[13];b[14]=a[14];return this},extractBasis:function(a,
-b,c){a.setFromMatrixColumn(this,0);b.setFromMatrixColumn(this,1);c.setFromMatrixColumn(this,2);return this},makeBasis:function(a,b,c){this.set(a.x,b.x,c.x,0,a.y,b.y,c.y,0,a.z,b.z,c.z,0,0,0,0,1);return this},extractRotation:function(){var a=new p;return function(b){var c=this.elements,d=b.elements,e=1/a.setFromMatrixColumn(b,0).length(),f=1/a.setFromMatrixColumn(b,1).length();b=1/a.setFromMatrixColumn(b,2).length();c[0]=d[0]*e;c[1]=d[1]*e;c[2]=d[2]*e;c[4]=d[4]*f;c[5]=d[5]*f;c[6]=d[6]*f;c[8]=d[8]*b;
-c[9]=d[9]*b;c[10]=d[10]*b;return this}}(),makeRotationFromEuler:function(a){a&&a.isEuler||console.error("THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.");var b=this.elements,c=a.x,d=a.y,e=a.z,f=Math.cos(c);c=Math.sin(c);var g=Math.cos(d);d=Math.sin(d);var h=Math.cos(e);e=Math.sin(e);if("XYZ"===a.order){a=f*h;var l=f*e,m=c*h,k=c*e;b[0]=g*h;b[4]=-g*e;b[8]=d;b[1]=l+m*d;b[5]=a-k*d;b[9]=-c*g;b[2]=k-a*d;b[6]=m+l*d;b[10]=f*g}else"YXZ"===a.order?(a=g*
-h,l=g*e,m=d*h,k=d*e,b[0]=a+k*c,b[4]=m*c-l,b[8]=f*d,b[1]=f*e,b[5]=f*h,b[9]=-c,b[2]=l*c-m,b[6]=k+a*c,b[10]=f*g):"ZXY"===a.order?(a=g*h,l=g*e,m=d*h,k=d*e,b[0]=a-k*c,b[4]=-f*e,b[8]=m+l*c,b[1]=l+m*c,b[5]=f*h,b[9]=k-a*c,b[2]=-f*d,b[6]=c,b[10]=f*g):"ZYX"===a.order?(a=f*h,l=f*e,m=c*h,k=c*e,b[0]=g*h,b[4]=m*d-l,b[8]=a*d+k,b[1]=g*e,b[5]=k*d+a,b[9]=l*d-m,b[2]=-d,b[6]=c*g,b[10]=f*g):"YZX"===a.order?(a=f*g,l=f*d,m=c*g,k=c*d,b[0]=g*h,b[4]=k-a*e,b[8]=m*e+l,b[1]=e,b[5]=f*h,b[9]=-c*h,b[2]=-d*h,b[6]=l*e+m,b[10]=a-k*
-e):"XZY"===a.order&&(a=f*g,l=f*d,m=c*g,k=c*d,b[0]=g*h,b[4]=-e,b[8]=d*h,b[1]=a*e+k,b[5]=f*h,b[9]=l*e-m,b[2]=m*e-l,b[6]=c*h,b[10]=k*e+a);b[3]=0;b[7]=0;b[11]=0;b[12]=0;b[13]=0;b[14]=0;b[15]=1;return this},makeRotationFromQuaternion:function(a){var b=this.elements,c=a._x,d=a._y,e=a._z,f=a._w,g=c+c,h=d+d,l=e+e;a=c*g;var m=c*h;c*=l;var k=d*h;d*=l;e*=l;g*=f;h*=f;f*=l;b[0]=1-(k+e);b[4]=m-f;b[8]=c+h;b[1]=m+f;b[5]=1-(a+e);b[9]=d-g;b[2]=c-h;b[6]=d+g;b[10]=1-(a+k);b[3]=0;b[7]=0;b[11]=0;b[12]=0;b[13]=0;b[14]=
-0;b[15]=1;return this},lookAt:function(){var a=new p,b=new p,c=new p;return function(d,e,f){var g=this.elements;c.subVectors(d,e);0===c.lengthSq()&&(c.z=1);c.normalize();a.crossVectors(f,c);0===a.lengthSq()&&(1===Math.abs(f.z)?c.x+=1E-4:c.z+=1E-4,c.normalize(),a.crossVectors(f,c));a.normalize();b.crossVectors(c,a);g[0]=a.x;g[4]=b.x;g[8]=c.x;g[1]=a.y;g[5]=b.y;g[9]=c.y;g[2]=a.z;g[6]=b.z;g[10]=c.z;return this}}(),multiply:function(a,b){return void 0!==b?(console.warn("THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead."),
-this.multiplyMatrices(a,b)):this.multiplyMatrices(this,a)},premultiply:function(a){return this.multiplyMatrices(a,this)},multiplyMatrices:function(a,b){var c=a.elements,d=b.elements;b=this.elements;a=c[0];var e=c[4],f=c[8],g=c[12],h=c[1],l=c[5],m=c[9],k=c[13],n=c[2],t=c[6],r=c[10],q=c[14],p=c[3],x=c[7],y=c[11];c=c[15];var w=d[0],B=d[4],G=d[8],K=d[12],P=d[1],H=d[5],C=d[9],A=d[13],z=d[2],E=d[6],F=d[10],I=d[14],L=d[3],Q=d[7],N=d[11];d=d[15];b[0]=a*w+e*P+f*z+g*L;b[4]=a*B+e*H+f*E+g*Q;b[8]=a*G+e*C+f*F+
-g*N;b[12]=a*K+e*A+f*I+g*d;b[1]=h*w+l*P+m*z+k*L;b[5]=h*B+l*H+m*E+k*Q;b[9]=h*G+l*C+m*F+k*N;b[13]=h*K+l*A+m*I+k*d;b[2]=n*w+t*P+r*z+q*L;b[6]=n*B+t*H+r*E+q*Q;b[10]=n*G+t*C+r*F+q*N;b[14]=n*K+t*A+r*I+q*d;b[3]=p*w+x*P+y*z+c*L;b[7]=p*B+x*H+y*E+c*Q;b[11]=p*G+x*C+y*F+c*N;b[15]=p*K+x*A+y*I+c*d;return this},multiplyScalar:function(a){var b=this.elements;b[0]*=a;b[4]*=a;b[8]*=a;b[12]*=a;b[1]*=a;b[5]*=a;b[9]*=a;b[13]*=a;b[2]*=a;b[6]*=a;b[10]*=a;b[14]*=a;b[3]*=a;b[7]*=a;b[11]*=a;b[15]*=a;return this},applyToBufferAttribute:function(){var a=
-new p;return function(b){for(var c=0,d=b.count;c<d;c++)a.x=b.getX(c),a.y=b.getY(c),a.z=b.getZ(c),a.applyMatrix4(this),b.setXYZ(c,a.x,a.y,a.z);return b}}(),determinant:function(){var a=this.elements,b=a[0],c=a[4],d=a[8],e=a[12],f=a[1],g=a[5],h=a[9],l=a[13],m=a[2],k=a[6],n=a[10],t=a[14];return a[3]*(+e*h*k-d*l*k-e*g*n+c*l*n+d*g*t-c*h*t)+a[7]*(+b*h*t-b*l*n+e*f*n-d*f*t+d*l*m-e*h*m)+a[11]*(+b*l*k-b*g*t-e*f*k+c*f*t+e*g*m-c*l*m)+a[15]*(-d*g*m-b*h*k+b*g*n+d*f*k-c*f*n+c*h*m)},transpose:function(){var a=this.elements;
-var b=a[1];a[1]=a[4];a[4]=b;b=a[2];a[2]=a[8];a[8]=b;b=a[6];a[6]=a[9];a[9]=b;b=a[3];a[3]=a[12];a[12]=b;b=a[7];a[7]=a[13];a[13]=b;b=a[11];a[11]=a[14];a[14]=b;return this},setPosition:function(a){var b=this.elements;b[12]=a.x;b[13]=a.y;b[14]=a.z;return this},getInverse:function(a,b){var c=this.elements,d=a.elements;a=d[0];var e=d[1],f=d[2],g=d[3],h=d[4],l=d[5],m=d[6],k=d[7],n=d[8],t=d[9],r=d[10],q=d[11],p=d[12],x=d[13],y=d[14];d=d[15];var w=t*y*k-x*r*k+x*m*q-l*y*q-t*m*d+l*r*d,B=p*r*k-n*y*k-p*m*q+h*y*
-q+n*m*d-h*r*d,G=n*x*k-p*t*k+p*l*q-h*x*q-n*l*d+h*t*d,K=p*t*m-n*x*m-p*l*r+h*x*r+n*l*y-h*t*y,P=a*w+e*B+f*G+g*K;if(0===P){if(!0===b)throw Error("THREE.Matrix4: .getInverse() can't invert matrix, determinant is 0");console.warn("THREE.Matrix4: .getInverse() can't invert matrix, determinant is 0");return this.identity()}b=1/P;c[0]=w*b;c[1]=(x*r*g-t*y*g-x*f*q+e*y*q+t*f*d-e*r*d)*b;c[2]=(l*y*g-x*m*g+x*f*k-e*y*k-l*f*d+e*m*d)*b;c[3]=(t*m*g-l*r*g-t*f*k+e*r*k+l*f*q-e*m*q)*b;c[4]=B*b;c[5]=(n*y*g-p*r*g+p*f*q-a*
-y*q-n*f*d+a*r*d)*b;c[6]=(p*m*g-h*y*g-p*f*k+a*y*k+h*f*d-a*m*d)*b;c[7]=(h*r*g-n*m*g+n*f*k-a*r*k-h*f*q+a*m*q)*b;c[8]=G*b;c[9]=(p*t*g-n*x*g-p*e*q+a*x*q+n*e*d-a*t*d)*b;c[10]=(h*x*g-p*l*g+p*e*k-a*x*k-h*e*d+a*l*d)*b;c[11]=(n*l*g-h*t*g-n*e*k+a*t*k+h*e*q-a*l*q)*b;c[12]=K*b;c[13]=(n*x*f-p*t*f+p*e*r-a*x*r-n*e*y+a*t*y)*b;c[14]=(p*l*f-h*x*f-p*e*m+a*x*m+h*e*y-a*l*y)*b;c[15]=(h*t*f-n*l*f+n*e*m-a*t*m-h*e*r+a*l*r)*b;return this},scale:function(a){var b=this.elements,c=a.x,d=a.y;a=a.z;b[0]*=c;b[4]*=d;b[8]*=a;b[1]*=
-c;b[5]*=d;b[9]*=a;b[2]*=c;b[6]*=d;b[10]*=a;b[3]*=c;b[7]*=d;b[11]*=a;return this},getMaxScaleOnAxis:function(){var a=this.elements;return Math.sqrt(Math.max(a[0]*a[0]+a[1]*a[1]+a[2]*a[2],a[4]*a[4]+a[5]*a[5]+a[6]*a[6],a[8]*a[8]+a[9]*a[9]+a[10]*a[10]))},makeTranslation:function(a,b,c){this.set(1,0,0,a,0,1,0,b,0,0,1,c,0,0,0,1);return this},makeRotationX:function(a){var b=Math.cos(a);a=Math.sin(a);this.set(1,0,0,0,0,b,-a,0,0,a,b,0,0,0,0,1);return this},makeRotationY:function(a){var b=Math.cos(a);a=Math.sin(a);
-this.set(b,0,a,0,0,1,0,0,-a,0,b,0,0,0,0,1);return this},makeRotationZ:function(a){var b=Math.cos(a);a=Math.sin(a);this.set(b,-a,0,0,a,b,0,0,0,0,1,0,0,0,0,1);return this},makeRotationAxis:function(a,b){var c=Math.cos(b);b=Math.sin(b);var d=1-c,e=a.x,f=a.y;a=a.z;var g=d*e,h=d*f;this.set(g*e+c,g*f-b*a,g*a+b*f,0,g*f+b*a,h*f+c,h*a-b*e,0,g*a-b*f,h*a+b*e,d*a*a+c,0,0,0,0,1);return this},makeScale:function(a,b,c){this.set(a,0,0,0,0,b,0,0,0,0,c,0,0,0,0,1);return this},makeShear:function(a,b,c){this.set(1,b,
-c,0,a,1,c,0,a,b,1,0,0,0,0,1);return this},compose:function(a,b,c){this.makeRotationFromQuaternion(b);this.scale(c);this.setPosition(a);return this},decompose:function(){var a=new p,b=new M;return function(c,d,e){var f=this.elements,g=a.set(f[0],f[1],f[2]).length(),h=a.set(f[4],f[5],f[6]).length(),l=a.set(f[8],f[9],f[10]).length();0>this.determinant()&&(g=-g);c.x=f[12];c.y=f[13];c.z=f[14];b.copy(this);c=1/g;f=1/h;var m=1/l;b.elements[0]*=c;b.elements[1]*=c;b.elements[2]*=c;b.elements[4]*=f;b.elements[5]*=
-f;b.elements[6]*=f;b.elements[8]*=m;b.elements[9]*=m;b.elements[10]*=m;d.setFromRotationMatrix(b);e.x=g;e.y=h;e.z=l;return this}}(),makePerspective:function(a,b,c,d,e,f){void 0===f&&console.warn("THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.");var g=this.elements;g[0]=2*e/(b-a);g[4]=0;g[8]=(b+a)/(b-a);g[12]=0;g[1]=0;g[5]=2*e/(c-d);g[9]=(c+d)/(c-d);g[13]=0;g[2]=0;g[6]=0;g[10]=-(f+e)/(f-e);g[14]=-2*f*e/(f-e);g[3]=0;g[7]=0;g[11]=-1;g[15]=0;return this},
-makeOrthographic:function(a,b,c,d,e,f){var g=this.elements,h=1/(b-a),l=1/(c-d),m=1/(f-e);g[0]=2*h;g[4]=0;g[8]=0;g[12]=-((b+a)*h);g[1]=0;g[5]=2*l;g[9]=0;g[13]=-((c+d)*l);g[2]=0;g[6]=0;g[10]=-2*m;g[14]=-((f+e)*m);g[3]=0;g[7]=0;g[11]=0;g[15]=1;return this},equals:function(a){var b=this.elements;a=a.elements;for(var c=0;16>c;c++)if(b[c]!==a[c])return!1;return!0},fromArray:function(a,b){void 0===b&&(b=0);for(var c=0;16>c;c++)this.elements[c]=a[c+b];return this},toArray:function(a,b){void 0===a&&(a=[]);
-void 0===b&&(b=0);var c=this.elements;a[b]=c[0];a[b+1]=c[1];a[b+2]=c[2];a[b+3]=c[3];a[b+4]=c[4];a[b+5]=c[5];a[b+6]=c[6];a[b+7]=c[7];a[b+8]=c[8];a[b+9]=c[9];a[b+10]=c[10];a[b+11]=c[11];a[b+12]=c[12];a[b+13]=c[13];a[b+14]=c[14];a[b+15]=c[15];return a}});Object.assign(ja,{slerp:function(a,b,c,d){return c.copy(a).slerp(b,d)},slerpFlat:function(a,b,c,d,e,f,g){var h=c[d+0],l=c[d+1],m=c[d+2];c=c[d+3];d=e[f+0];var k=e[f+1],n=e[f+2];e=e[f+3];if(c!==e||h!==d||l!==k||m!==n){f=1-g;var p=h*d+l*k+m*n+c*e,r=0<=
-p?1:-1,q=1-p*p;q>Number.EPSILON&&(q=Math.sqrt(q),p=Math.atan2(q,p*r),f=Math.sin(f*p)/q,g=Math.sin(g*p)/q);r*=g;h=h*f+d*r;l=l*f+k*r;m=m*f+n*r;c=c*f+e*r;f===1-g&&(g=1/Math.sqrt(h*h+l*l+m*m+c*c),h*=g,l*=g,m*=g,c*=g)}a[b]=h;a[b+1]=l;a[b+2]=m;a[b+3]=c}});Object.defineProperties(ja.prototype,{x:{get:function(){return this._x},set:function(a){this._x=a;this.onChangeCallback()}},y:{get:function(){return this._y},set:function(a){this._y=a;this.onChangeCallback()}},z:{get:function(){return this._z},set:function(a){this._z=
-a;this.onChangeCallback()}},w:{get:function(){return this._w},set:function(a){this._w=a;this.onChangeCallback()}}});Object.assign(ja.prototype,{set:function(a,b,c,d){this._x=a;this._y=b;this._z=c;this._w=d;this.onChangeCallback();return this},clone:function(){return new this.constructor(this._x,this._y,this._z,this._w)},copy:function(a){this._x=a.x;this._y=a.y;this._z=a.z;this._w=a.w;this.onChangeCallback();return this},setFromEuler:function(a,b){if(!a||!a.isEuler)throw Error("THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.");
-var c=a._x,d=a._y,e=a._z;a=a.order;var f=Math.cos,g=Math.sin,h=f(c/2),l=f(d/2);f=f(e/2);c=g(c/2);d=g(d/2);e=g(e/2);"XYZ"===a?(this._x=c*l*f+h*d*e,this._y=h*d*f-c*l*e,this._z=h*l*e+c*d*f,this._w=h*l*f-c*d*e):"YXZ"===a?(this._x=c*l*f+h*d*e,this._y=h*d*f-c*l*e,this._z=h*l*e-c*d*f,this._w=h*l*f+c*d*e):"ZXY"===a?(this._x=c*l*f-h*d*e,this._y=h*d*f+c*l*e,this._z=h*l*e+c*d*f,this._w=h*l*f-c*d*e):"ZYX"===a?(this._x=c*l*f-h*d*e,this._y=h*d*f+c*l*e,this._z=h*l*e-c*d*f,this._w=h*l*f+c*d*e):"YZX"===a?(this._x=
-c*l*f+h*d*e,this._y=h*d*f+c*l*e,this._z=h*l*e-c*d*f,this._w=h*l*f-c*d*e):"XZY"===a&&(this._x=c*l*f-h*d*e,this._y=h*d*f-c*l*e,this._z=h*l*e+c*d*f,this._w=h*l*f+c*d*e);if(!1!==b)this.onChangeCallback();return this},setFromAxisAngle:function(a,b){b/=2;var c=Math.sin(b);this._x=a.x*c;this._y=a.y*c;this._z=a.z*c;this._w=Math.cos(b);this.onChangeCallback();return this},setFromRotationMatrix:function(a){var b=a.elements,c=b[0];a=b[4];var d=b[8],e=b[1],f=b[5],g=b[9],h=b[2],l=b[6];b=b[10];var m=c+f+b;0<m?
-(c=.5/Math.sqrt(m+1),this._w=.25/c,this._x=(l-g)*c,this._y=(d-h)*c,this._z=(e-a)*c):c>f&&c>b?(c=2*Math.sqrt(1+c-f-b),this._w=(l-g)/c,this._x=.25*c,this._y=(a+e)/c,this._z=(d+h)/c):f>b?(c=2*Math.sqrt(1+f-c-b),this._w=(d-h)/c,this._x=(a+e)/c,this._y=.25*c,this._z=(g+l)/c):(c=2*Math.sqrt(1+b-c-f),this._w=(e-a)/c,this._x=(d+h)/c,this._y=(g+l)/c,this._z=.25*c);this.onChangeCallback();return this},setFromUnitVectors:function(){var a=new p,b;return function(c,d){void 0===a&&(a=new p);b=c.dot(d)+1;1E-6>b?
-(b=0,Math.abs(c.x)>Math.abs(c.z)?a.set(-c.y,c.x,0):a.set(0,-c.z,c.y)):a.crossVectors(c,d);this._x=a.x;this._y=a.y;this._z=a.z;this._w=b;return this.normalize()}}(),inverse:function(){return this.conjugate()},conjugate:function(){this._x*=-1;this._y*=-1;this._z*=-1;this.onChangeCallback();return this},dot:function(a){return this._x*a._x+this._y*a._y+this._z*a._z+this._w*a._w},lengthSq:function(){return this._x*this._x+this._y*this._y+this._z*this._z+this._w*this._w},length:function(){return Math.sqrt(this._x*
-this._x+this._y*this._y+this._z*this._z+this._w*this._w)},normalize:function(){var a=this.length();0===a?(this._z=this._y=this._x=0,this._w=1):(a=1/a,this._x*=a,this._y*=a,this._z*=a,this._w*=a);this.onChangeCallback();return this},multiply:function(a,b){return void 0!==b?(console.warn("THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead."),this.multiplyQuaternions(a,b)):this.multiplyQuaternions(this,a)},premultiply:function(a){return this.multiplyQuaternions(a,
-this)},multiplyQuaternions:function(a,b){var c=a._x,d=a._y,e=a._z;a=a._w;var f=b._x,g=b._y,h=b._z;b=b._w;this._x=c*b+a*f+d*h-e*g;this._y=d*b+a*g+e*f-c*h;this._z=e*b+a*h+c*g-d*f;this._w=a*b-c*f-d*g-e*h;this.onChangeCallback();return this},slerp:function(a,b){if(0===b)return this;if(1===b)return this.copy(a);var c=this._x,d=this._y,e=this._z,f=this._w,g=f*a._w+c*a._x+d*a._y+e*a._z;0>g?(this._w=-a._w,this._x=-a._x,this._y=-a._y,this._z=-a._z,g=-g):this.copy(a);if(1<=g)return this._w=f,this._x=c,this._y=
-d,this._z=e,this;a=Math.sqrt(1-g*g);if(.001>Math.abs(a))return this._w=.5*(f+this._w),this._x=.5*(c+this._x),this._y=.5*(d+this._y),this._z=.5*(e+this._z),this;var h=Math.atan2(a,g);g=Math.sin((1-b)*h)/a;b=Math.sin(b*h)/a;this._w=f*g+this._w*b;this._x=c*g+this._x*b;this._y=d*g+this._y*b;this._z=e*g+this._z*b;this.onChangeCallback();return this},equals:function(a){return a._x===this._x&&a._y===this._y&&a._z===this._z&&a._w===this._w},fromArray:function(a,b){void 0===b&&(b=0);this._x=a[b];this._y=a[b+
-1];this._z=a[b+2];this._w=a[b+3];this.onChangeCallback();return this},toArray:function(a,b){void 0===a&&(a=[]);void 0===b&&(b=0);a[b]=this._x;a[b+1]=this._y;a[b+2]=this._z;a[b+3]=this._w;return a},onChange:function(a){this.onChangeCallback=a;return this},onChangeCallback:function(){}});Object.assign(p.prototype,{isVector3:!0,set:function(a,b,c){this.x=a;this.y=b;this.z=c;return this},setScalar:function(a){this.z=this.y=this.x=a;return this},setX:function(a){this.x=a;return this},setY:function(a){this.y=
-a;return this},setZ:function(a){this.z=a;return this},setComponent:function(a,b){switch(a){case 0:this.x=b;break;case 1:this.y=b;break;case 2:this.z=b;break;default:throw Error("index is out of range: "+a);}return this},getComponent:function(a){switch(a){case 0:return this.x;case 1:return this.y;case 2:return this.z;default:throw Error("index is out of range: "+a);}},clone:function(){return new this.constructor(this.x,this.y,this.z)},copy:function(a){this.x=a.x;this.y=a.y;this.z=a.z;return this},
-add:function(a,b){if(void 0!==b)return console.warn("THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead."),this.addVectors(a,b);this.x+=a.x;this.y+=a.y;this.z+=a.z;return this},addScalar:function(a){this.x+=a;this.y+=a;this.z+=a;return this},addVectors:function(a,b){this.x=a.x+b.x;this.y=a.y+b.y;this.z=a.z+b.z;return this},addScaledVector:function(a,b){this.x+=a.x*b;this.y+=a.y*b;this.z+=a.z*b;return this},sub:function(a,b){if(void 0!==b)return console.warn("THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead."),
-this.subVectors(a,b);this.x-=a.x;this.y-=a.y;this.z-=a.z;return this},subScalar:function(a){this.x-=a;this.y-=a;this.z-=a;return this},subVectors:function(a,b){this.x=a.x-b.x;this.y=a.y-b.y;this.z=a.z-b.z;return this},multiply:function(a,b){if(void 0!==b)return console.warn("THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead."),this.multiplyVectors(a,b);this.x*=a.x;this.y*=a.y;this.z*=a.z;return this},multiplyScalar:function(a){this.x*=a;this.y*=a;this.z*=
-a;return this},multiplyVectors:function(a,b){this.x=a.x*b.x;this.y=a.y*b.y;this.z=a.z*b.z;return this},applyEuler:function(){var a=new ja;return function(b){b&&b.isEuler||console.error("THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.");return this.applyQuaternion(a.setFromEuler(b))}}(),applyAxisAngle:function(){var a=new ja;return function(b,c){return this.applyQuaternion(a.setFromAxisAngle(b,c))}}(),applyMatrix3:function(a){var b=this.x,c=this.y,d=this.z;
-a=a.elements;this.x=a[0]*b+a[3]*c+a[6]*d;this.y=a[1]*b+a[4]*c+a[7]*d;this.z=a[2]*b+a[5]*c+a[8]*d;return this},applyMatrix4:function(a){var b=this.x,c=this.y,d=this.z;a=a.elements;var e=1/(a[3]*b+a[7]*c+a[11]*d+a[15]);this.x=(a[0]*b+a[4]*c+a[8]*d+a[12])*e;this.y=(a[1]*b+a[5]*c+a[9]*d+a[13])*e;this.z=(a[2]*b+a[6]*c+a[10]*d+a[14])*e;return this},applyQuaternion:function(a){var b=this.x,c=this.y,d=this.z,e=a.x,f=a.y,g=a.z;a=a.w;var h=a*b+f*d-g*c,l=a*c+g*b-e*d,m=a*d+e*c-f*b;b=-e*b-f*c-g*d;this.x=h*a+b*
--e+l*-g-m*-f;this.y=l*a+b*-f+m*-e-h*-g;this.z=m*a+b*-g+h*-f-l*-e;return this},project:function(){var a=new M;return function(b){a.multiplyMatrices(b.projectionMatrix,a.getInverse(b.matrixWorld));return this.applyMatrix4(a)}}(),unproject:function(){var a=new M;return function(b){a.multiplyMatrices(b.matrixWorld,a.getInverse(b.projectionMatrix));return this.applyMatrix4(a)}}(),transformDirection:function(a){var b=this.x,c=this.y,d=this.z;a=a.elements;this.x=a[0]*b+a[4]*c+a[8]*d;this.y=a[1]*b+a[5]*c+
-a[9]*d;this.z=a[2]*b+a[6]*c+a[10]*d;return this.normalize()},divide:function(a){this.x/=a.x;this.y/=a.y;this.z/=a.z;return this},divideScalar:function(a){return this.multiplyScalar(1/a)},min:function(a){this.x=Math.min(this.x,a.x);this.y=Math.min(this.y,a.y);this.z=Math.min(this.z,a.z);return this},max:function(a){this.x=Math.max(this.x,a.x);this.y=Math.max(this.y,a.y);this.z=Math.max(this.z,a.z);return this},clamp:function(a,b){this.x=Math.max(a.x,Math.min(b.x,this.x));this.y=Math.max(a.y,Math.min(b.y,
-this.y));this.z=Math.max(a.z,Math.min(b.z,this.z));return this},clampScalar:function(){var a=new p,b=new p;return function(c,d){a.set(c,c,c);b.set(d,d,d);return this.clamp(a,b)}}(),clampLength:function(a,b){var c=this.length();return this.divideScalar(c||1).multiplyScalar(Math.max(a,Math.min(b,c)))},floor:function(){this.x=Math.floor(this.x);this.y=Math.floor(this.y);this.z=Math.floor(this.z);return this},ceil:function(){this.x=Math.ceil(this.x);this.y=Math.ceil(this.y);this.z=Math.ceil(this.z);return this},
-round:function(){this.x=Math.round(this.x);this.y=Math.round(this.y);this.z=Math.round(this.z);return this},roundToZero:function(){this.x=0>this.x?Math.ceil(this.x):Math.floor(this.x);this.y=0>this.y?Math.ceil(this.y):Math.floor(this.y);this.z=0>this.z?Math.ceil(this.z):Math.floor(this.z);return this},negate:function(){this.x=-this.x;this.y=-this.y;this.z=-this.z;return this},dot:function(a){return this.x*a.x+this.y*a.y+this.z*a.z},lengthSq:function(){return this.x*this.x+this.y*this.y+this.z*this.z},
-length:function(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z)},manhattanLength:function(){return Math.abs(this.x)+Math.abs(this.y)+Math.abs(this.z)},normalize:function(){return this.divideScalar(this.length()||1)},setLength:function(a){return this.normalize().multiplyScalar(a)},lerp:function(a,b){this.x+=(a.x-this.x)*b;this.y+=(a.y-this.y)*b;this.z+=(a.z-this.z)*b;return this},lerpVectors:function(a,b,c){return this.subVectors(b,a).multiplyScalar(c).add(a)},cross:function(a,b){return void 0!==
-b?(console.warn("THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead."),this.crossVectors(a,b)):this.crossVectors(this,a)},crossVectors:function(a,b){var c=a.x,d=a.y;a=a.z;var e=b.x,f=b.y;b=b.z;this.x=d*b-a*f;this.y=a*e-c*b;this.z=c*f-d*e;return this},projectOnVector:function(a){var b=a.dot(this)/a.lengthSq();return this.copy(a).multiplyScalar(b)},projectOnPlane:function(){var a=new p;return function(b){a.copy(this).projectOnVector(b);return this.sub(a)}}(),reflect:function(){var a=
-new p;return function(b){return this.sub(a.copy(b).multiplyScalar(2*this.dot(b)))}}(),angleTo:function(a){a=this.dot(a)/Math.sqrt(this.lengthSq()*a.lengthSq());return Math.acos(S.clamp(a,-1,1))},distanceTo:function(a){return Math.sqrt(this.distanceToSquared(a))},distanceToSquared:function(a){var b=this.x-a.x,c=this.y-a.y;a=this.z-a.z;return b*b+c*c+a*a},manhattanDistanceTo:function(a){return Math.abs(this.x-a.x)+Math.abs(this.y-a.y)+Math.abs(this.z-a.z)},setFromSpherical:function(a){var b=Math.sin(a.phi)*
-a.radius;this.x=b*Math.sin(a.theta);this.y=Math.cos(a.phi)*a.radius;this.z=b*Math.cos(a.theta);return this},setFromCylindrical:function(a){this.x=a.radius*Math.sin(a.theta);this.y=a.y;this.z=a.radius*Math.cos(a.theta);return this},setFromMatrixPosition:function(a){a=a.elements;this.x=a[12];this.y=a[13];this.z=a[14];return this},setFromMatrixScale:function(a){var b=this.setFromMatrixColumn(a,0).length(),c=this.setFromMatrixColumn(a,1).length();a=this.setFromMatrixColumn(a,2).length();this.x=b;this.y=
-c;this.z=a;return this},setFromMatrixColumn:function(a,b){return this.fromArray(a.elements,4*b)},equals:function(a){return a.x===this.x&&a.y===this.y&&a.z===this.z},fromArray:function(a,b){void 0===b&&(b=0);this.x=a[b];this.y=a[b+1];this.z=a[b+2];return this},toArray:function(a,b){void 0===a&&(a=[]);void 0===b&&(b=0);a[b]=this.x;a[b+1]=this.y;a[b+2]=this.z;return a},fromBufferAttribute:function(a,b,c){void 0!==c&&console.warn("THREE.Vector3: offset has been removed from .fromBufferAttribute().");
-this.x=a.getX(b);this.y=a.getY(b);this.z=a.getZ(b);return this}});Object.assign(sa.prototype,{isMatrix3:!0,set:function(a,b,c,d,e,f,g,h,l){var m=this.elements;m[0]=a;m[1]=d;m[2]=g;m[3]=b;m[4]=e;m[5]=h;m[6]=c;m[7]=f;m[8]=l;return this},identity:function(){this.set(1,0,0,0,1,0,0,0,1);return this},clone:function(){return(new this.constructor).fromArray(this.elements)},copy:function(a){var b=this.elements;a=a.elements;b[0]=a[0];b[1]=a[1];b[2]=a[2];b[3]=a[3];b[4]=a[4];b[5]=a[5];b[6]=a[6];b[7]=a[7];b[8]=
-a[8];return this},setFromMatrix4:function(a){a=a.elements;this.set(a[0],a[4],a[8],a[1],a[5],a[9],a[2],a[6],a[10]);return this},applyToBufferAttribute:function(){var a=new p;return function(b){for(var c=0,d=b.count;c<d;c++)a.x=b.getX(c),a.y=b.getY(c),a.z=b.getZ(c),a.applyMatrix3(this),b.setXYZ(c,a.x,a.y,a.z);return b}}(),multiply:function(a){return this.multiplyMatrices(this,a)},premultiply:function(a){return this.multiplyMatrices(a,this)},multiplyMatrices:function(a,b){var c=a.elements,d=b.elements;
-b=this.elements;a=c[0];var e=c[3],f=c[6],g=c[1],h=c[4],l=c[7],m=c[2],k=c[5];c=c[8];var n=d[0],p=d[3],r=d[6],q=d[1],v=d[4],x=d[7],y=d[2],w=d[5];d=d[8];b[0]=a*n+e*q+f*y;b[3]=a*p+e*v+f*w;b[6]=a*r+e*x+f*d;b[1]=g*n+h*q+l*y;b[4]=g*p+h*v+l*w;b[7]=g*r+h*x+l*d;b[2]=m*n+k*q+c*y;b[5]=m*p+k*v+c*w;b[8]=m*r+k*x+c*d;return this},multiplyScalar:function(a){var b=this.elements;b[0]*=a;b[3]*=a;b[6]*=a;b[1]*=a;b[4]*=a;b[7]*=a;b[2]*=a;b[5]*=a;b[8]*=a;return this},determinant:function(){var a=this.elements,b=a[0],c=a[1],
-d=a[2],e=a[3],f=a[4],g=a[5],h=a[6],l=a[7];a=a[8];return b*f*a-b*g*l-c*e*a+c*g*h+d*e*l-d*f*h},getInverse:function(a,b){a&&a.isMatrix4&&console.error("THREE.Matrix3: .getInverse() no longer takes a Matrix4 argument.");var c=a.elements;a=this.elements;var d=c[0],e=c[1],f=c[2],g=c[3],h=c[4],l=c[5],m=c[6],k=c[7];c=c[8];var n=c*h-l*k,p=l*m-c*g,r=k*g-h*m,q=d*n+e*p+f*r;if(0===q){if(!0===b)throw Error("THREE.Matrix3: .getInverse() can't invert matrix, determinant is 0");console.warn("THREE.Matrix3: .getInverse() can't invert matrix, determinant is 0");
-return this.identity()}b=1/q;a[0]=n*b;a[1]=(f*k-c*e)*b;a[2]=(l*e-f*h)*b;a[3]=p*b;a[4]=(c*d-f*m)*b;a[5]=(f*g-l*d)*b;a[6]=r*b;a[7]=(e*m-k*d)*b;a[8]=(h*d-e*g)*b;return this},transpose:function(){var a=this.elements;var b=a[1];a[1]=a[3];a[3]=b;b=a[2];a[2]=a[6];a[6]=b;b=a[5];a[5]=a[7];a[7]=b;return this},getNormalMatrix:function(a){return this.setFromMatrix4(a).getInverse(this).transpose()},transposeIntoArray:function(a){var b=this.elements;a[0]=b[0];a[1]=b[3];a[2]=b[6];a[3]=b[1];a[4]=b[4];a[5]=b[7];a[6]=
-b[2];a[7]=b[5];a[8]=b[8];return this},setUvTransform:function(a,b,c,d,e,f,g){var h=Math.cos(e);e=Math.sin(e);this.set(c*h,c*e,-c*(h*f+e*g)+f+a,-d*e,d*h,-d*(-e*f+h*g)+g+b,0,0,1)},scale:function(a,b){var c=this.elements;c[0]*=a;c[3]*=a;c[6]*=a;c[1]*=b;c[4]*=b;c[7]*=b;return this},rotate:function(a){var b=Math.cos(a);a=Math.sin(a);var c=this.elements,d=c[0],e=c[3],f=c[6],g=c[1],h=c[4],l=c[7];c[0]=b*d+a*g;c[3]=b*e+a*h;c[6]=b*f+a*l;c[1]=-a*d+b*g;c[4]=-a*e+b*h;c[7]=-a*f+b*l;return this},translate:function(a,
-b){var c=this.elements;c[0]+=a*c[2];c[3]+=a*c[5];c[6]+=a*c[8];c[1]+=b*c[2];c[4]+=b*c[5];c[7]+=b*c[8];return this},equals:function(a){var b=this.elements;a=a.elements;for(var c=0;9>c;c++)if(b[c]!==a[c])return!1;return!0},fromArray:function(a,b){void 0===b&&(b=0);for(var c=0;9>c;c++)this.elements[c]=a[c+b];return this},toArray:function(a,b){void 0===a&&(a=[]);void 0===b&&(b=0);var c=this.elements;a[b]=c[0];a[b+1]=c[1];a[b+2]=c[2];a[b+3]=c[3];a[b+4]=c[4];a[b+5]=c[5];a[b+6]=c[6];a[b+7]=c[7];a[b+8]=c[8];
-return a}});var xf=0;Y.DEFAULT_IMAGE=void 0;Y.DEFAULT_MAPPING=300;Y.prototype=Object.assign(Object.create(xa.prototype),{constructor:Y,isTexture:!0,clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.name=a.name;this.image=a.image;this.mipmaps=a.mipmaps.slice(0);this.mapping=a.mapping;this.wrapS=a.wrapS;this.wrapT=a.wrapT;this.magFilter=a.magFilter;this.minFilter=a.minFilter;this.anisotropy=a.anisotropy;this.format=a.format;this.type=a.type;this.offset.copy(a.offset);this.repeat.copy(a.repeat);
-this.center.copy(a.center);this.rotation=a.rotation;this.matrixAutoUpdate=a.matrixAutoUpdate;this.matrix.copy(a.matrix);this.generateMipmaps=a.generateMipmaps;this.premultiplyAlpha=a.premultiplyAlpha;this.flipY=a.flipY;this.unpackAlignment=a.unpackAlignment;this.encoding=a.encoding;return this},toJSON:function(a){var b=void 0===a||"string"===typeof a;if(!b&&void 0!==a.textures[this.uuid])return a.textures[this.uuid];var c={metadata:{version:4.5,type:"Texture",generator:"Texture.toJSON"},uuid:this.uuid,
-name:this.name,mapping:this.mapping,repeat:[this.repeat.x,this.repeat.y],offset:[this.offset.x,this.offset.y],center:[this.center.x,this.center.y],rotation:this.rotation,wrap:[this.wrapS,this.wrapT],format:this.format,minFilter:this.minFilter,magFilter:this.magFilter,anisotropy:this.anisotropy,flipY:this.flipY};if(void 0!==this.image){var d=this.image;void 0===d.uuid&&(d.uuid=S.generateUUID());if(!b&&void 0===a.images[d.uuid]){var e=a.images,f=d.uuid,g=d.uuid;if(d instanceof HTMLCanvasElement)var h=
-d;else{h=document.createElementNS("http://www.w3.org/1999/xhtml","canvas");h.width=d.width;h.height=d.height;var l=h.getContext("2d");d instanceof ImageData?l.putImageData(d,0,0):l.drawImage(d,0,0,d.width,d.height)}h=2048<h.width||2048<h.height?h.toDataURL("image/jpeg",.6):h.toDataURL("image/png");e[f]={uuid:g,url:h}}c.image=d.uuid}b||(a.textures[this.uuid]=c);return c},dispose:function(){this.dispatchEvent({type:"dispose"})},transformUv:function(a){if(300===this.mapping){a.applyMatrix3(this.matrix);
-if(0>a.x||1<a.x)switch(this.wrapS){case 1E3:a.x-=Math.floor(a.x);break;case 1001:a.x=0>a.x?0:1;break;case 1002:a.x=1===Math.abs(Math.floor(a.x)%2)?Math.ceil(a.x)-a.x:a.x-Math.floor(a.x)}if(0>a.y||1<a.y)switch(this.wrapT){case 1E3:a.y-=Math.floor(a.y);break;case 1001:a.y=0>a.y?0:1;break;case 1002:a.y=1===Math.abs(Math.floor(a.y)%2)?Math.ceil(a.y)-a.y:a.y-Math.floor(a.y)}this.flipY&&(a.y=1-a.y)}}});Object.defineProperty(Y.prototype,"needsUpdate",{set:function(a){!0===a&&this.version++}});Object.assign(ea.prototype,
-{isVector4:!0,set:function(a,b,c,d){this.x=a;this.y=b;this.z=c;this.w=d;return this},setScalar:function(a){this.w=this.z=this.y=this.x=a;return this},setX:function(a){this.x=a;return this},setY:function(a){this.y=a;return this},setZ:function(a){this.z=a;return this},setW:function(a){this.w=a;return this},setComponent:function(a,b){switch(a){case 0:this.x=b;break;case 1:this.y=b;break;case 2:this.z=b;break;case 3:this.w=b;break;default:throw Error("index is out of range: "+a);}return this},getComponent:function(a){switch(a){case 0:return this.x;
-case 1:return this.y;case 2:return this.z;case 3:return this.w;default:throw Error("index is out of range: "+a);}},clone:function(){return new this.constructor(this.x,this.y,this.z,this.w)},copy:function(a){this.x=a.x;this.y=a.y;this.z=a.z;this.w=void 0!==a.w?a.w:1;return this},add:function(a,b){if(void 0!==b)return console.warn("THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead."),this.addVectors(a,b);this.x+=a.x;this.y+=a.y;this.z+=a.z;this.w+=a.w;return this},
-addScalar:function(a){this.x+=a;this.y+=a;this.z+=a;this.w+=a;return this},addVectors:function(a,b){this.x=a.x+b.x;this.y=a.y+b.y;this.z=a.z+b.z;this.w=a.w+b.w;return this},addScaledVector:function(a,b){this.x+=a.x*b;this.y+=a.y*b;this.z+=a.z*b;this.w+=a.w*b;return this},sub:function(a,b){if(void 0!==b)return console.warn("THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead."),this.subVectors(a,b);this.x-=a.x;this.y-=a.y;this.z-=a.z;this.w-=a.w;return this},subScalar:function(a){this.x-=
-a;this.y-=a;this.z-=a;this.w-=a;return this},subVectors:function(a,b){this.x=a.x-b.x;this.y=a.y-b.y;this.z=a.z-b.z;this.w=a.w-b.w;return this},multiplyScalar:function(a){this.x*=a;this.y*=a;this.z*=a;this.w*=a;return this},applyMatrix4:function(a){var b=this.x,c=this.y,d=this.z,e=this.w;a=a.elements;this.x=a[0]*b+a[4]*c+a[8]*d+a[12]*e;this.y=a[1]*b+a[5]*c+a[9]*d+a[13]*e;this.z=a[2]*b+a[6]*c+a[10]*d+a[14]*e;this.w=a[3]*b+a[7]*c+a[11]*d+a[15]*e;return this},divideScalar:function(a){return this.multiplyScalar(1/
-a)},setAxisAngleFromQuaternion:function(a){this.w=2*Math.acos(a.w);var b=Math.sqrt(1-a.w*a.w);1E-4>b?(this.x=1,this.z=this.y=0):(this.x=a.x/b,this.y=a.y/b,this.z=a.z/b);return this},setAxisAngleFromRotationMatrix:function(a){a=a.elements;var b=a[0];var c=a[4];var d=a[8],e=a[1],f=a[5],g=a[9];var h=a[2];var l=a[6];var m=a[10];if(.01>Math.abs(c-e)&&.01>Math.abs(d-h)&&.01>Math.abs(g-l)){if(.1>Math.abs(c+e)&&.1>Math.abs(d+h)&&.1>Math.abs(g+l)&&.1>Math.abs(b+f+m-3))return this.set(1,0,0,0),this;a=Math.PI;
-b=(b+1)/2;f=(f+1)/2;m=(m+1)/2;c=(c+e)/4;d=(d+h)/4;g=(g+l)/4;b>f&&b>m?.01>b?(l=0,c=h=.707106781):(l=Math.sqrt(b),h=c/l,c=d/l):f>m?.01>f?(l=.707106781,h=0,c=.707106781):(h=Math.sqrt(f),l=c/h,c=g/h):.01>m?(h=l=.707106781,c=0):(c=Math.sqrt(m),l=d/c,h=g/c);this.set(l,h,c,a);return this}a=Math.sqrt((l-g)*(l-g)+(d-h)*(d-h)+(e-c)*(e-c));.001>Math.abs(a)&&(a=1);this.x=(l-g)/a;this.y=(d-h)/a;this.z=(e-c)/a;this.w=Math.acos((b+f+m-1)/2);return this},min:function(a){this.x=Math.min(this.x,a.x);this.y=Math.min(this.y,
-a.y);this.z=Math.min(this.z,a.z);this.w=Math.min(this.w,a.w);return this},max:function(a){this.x=Math.max(this.x,a.x);this.y=Math.max(this.y,a.y);this.z=Math.max(this.z,a.z);this.w=Math.max(this.w,a.w);return this},clamp:function(a,b){this.x=Math.max(a.x,Math.min(b.x,this.x));this.y=Math.max(a.y,Math.min(b.y,this.y));this.z=Math.max(a.z,Math.min(b.z,this.z));this.w=Math.max(a.w,Math.min(b.w,this.w));return this},clampScalar:function(){var a,b;return function(c,d){void 0===a&&(a=new ea,b=new ea);a.set(c,
-c,c,c);b.set(d,d,d,d);return this.clamp(a,b)}}(),clampLength:function(a,b){var c=this.length();return this.divideScalar(c||1).multiplyScalar(Math.max(a,Math.min(b,c)))},floor:function(){this.x=Math.floor(this.x);this.y=Math.floor(this.y);this.z=Math.floor(this.z);this.w=Math.floor(this.w);return this},ceil:function(){this.x=Math.ceil(this.x);this.y=Math.ceil(this.y);this.z=Math.ceil(this.z);this.w=Math.ceil(this.w);return this},round:function(){this.x=Math.round(this.x);this.y=Math.round(this.y);
-this.z=Math.round(this.z);this.w=Math.round(this.w);return this},roundToZero:function(){this.x=0>this.x?Math.ceil(this.x):Math.floor(this.x);this.y=0>this.y?Math.ceil(this.y):Math.floor(this.y);this.z=0>this.z?Math.ceil(this.z):Math.floor(this.z);this.w=0>this.w?Math.ceil(this.w):Math.floor(this.w);return this},negate:function(){this.x=-this.x;this.y=-this.y;this.z=-this.z;this.w=-this.w;return this},dot:function(a){return this.x*a.x+this.y*a.y+this.z*a.z+this.w*a.w},lengthSq:function(){return this.x*
-this.x+this.y*this.y+this.z*this.z+this.w*this.w},length:function(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w)},manhattanLength:function(){return Math.abs(this.x)+Math.abs(this.y)+Math.abs(this.z)+Math.abs(this.w)},normalize:function(){return this.divideScalar(this.length()||1)},setLength:function(a){return this.normalize().multiplyScalar(a)},lerp:function(a,b){this.x+=(a.x-this.x)*b;this.y+=(a.y-this.y)*b;this.z+=(a.z-this.z)*b;this.w+=(a.w-this.w)*b;return this},lerpVectors:function(a,
-b,c){return this.subVectors(b,a).multiplyScalar(c).add(a)},equals:function(a){return a.x===this.x&&a.y===this.y&&a.z===this.z&&a.w===this.w},fromArray:function(a,b){void 0===b&&(b=0);this.x=a[b];this.y=a[b+1];this.z=a[b+2];this.w=a[b+3];return this},toArray:function(a,b){void 0===a&&(a=[]);void 0===b&&(b=0);a[b]=this.x;a[b+1]=this.y;a[b+2]=this.z;a[b+3]=this.w;return a},fromBufferAttribute:function(a,b,c){void 0!==c&&console.warn("THREE.Vector4: offset has been removed from .fromBufferAttribute().");
-this.x=a.getX(b);this.y=a.getY(b);this.z=a.getZ(b);this.w=a.getW(b);return this}});hb.prototype=Object.assign(Object.create(xa.prototype),{constructor:hb,isWebGLRenderTarget:!0,setSize:function(a,b){if(this.width!==a||this.height!==b)this.width=a,this.height=b,this.dispose();this.viewport.set(0,0,a,b);this.scissor.set(0,0,a,b)},clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.width=a.width;this.height=a.height;this.viewport.copy(a.viewport);this.texture=a.texture.clone();
-this.depthBuffer=a.depthBuffer;this.stencilBuffer=a.stencilBuffer;this.depthTexture=a.depthTexture;return this},dispose:function(){this.dispatchEvent({type:"dispose"})}});Ib.prototype=Object.create(hb.prototype);Ib.prototype.constructor=Ib;Ib.prototype.isWebGLRenderTargetCube=!0;ib.prototype=Object.create(Y.prototype);ib.prototype.constructor=ib;ib.prototype.isDataTexture=!0;Object.assign(Va.prototype,{isBox3:!0,set:function(a,b){this.min.copy(a);this.max.copy(b);return this},setFromArray:function(a){for(var b=
-Infinity,c=Infinity,d=Infinity,e=-Infinity,f=-Infinity,g=-Infinity,h=0,l=a.length;h<l;h+=3){var m=a[h],k=a[h+1],n=a[h+2];m<b&&(b=m);k<c&&(c=k);n<d&&(d=n);m>e&&(e=m);k>f&&(f=k);n>g&&(g=n)}this.min.set(b,c,d);this.max.set(e,f,g);return this},setFromBufferAttribute:function(a){for(var b=Infinity,c=Infinity,d=Infinity,e=-Infinity,f=-Infinity,g=-Infinity,h=0,l=a.count;h<l;h++){var m=a.getX(h),k=a.getY(h),n=a.getZ(h);m<b&&(b=m);k<c&&(c=k);n<d&&(d=n);m>e&&(e=m);k>f&&(f=k);n>g&&(g=n)}this.min.set(b,c,d);
-this.max.set(e,f,g);return this},setFromPoints:function(a){this.makeEmpty();for(var b=0,c=a.length;b<c;b++)this.expandByPoint(a[b]);return this},setFromCenterAndSize:function(){var a=new p;return function(b,c){c=a.copy(c).multiplyScalar(.5);this.min.copy(b).sub(c);this.max.copy(b).add(c);return this}}(),setFromObject:function(a){this.makeEmpty();return this.expandByObject(a)},clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.min.copy(a.min);this.max.copy(a.max);return this},
-makeEmpty:function(){this.min.x=this.min.y=this.min.z=Infinity;this.max.x=this.max.y=this.max.z=-Infinity;return this},isEmpty:function(){return this.max.x<this.min.x||this.max.y<this.min.y||this.max.z<this.min.z},getCenter:function(a){void 0===a&&(console.warn("THREE.Box3: .getCenter() target is now required"),a=new p);return this.isEmpty()?a.set(0,0,0):a.addVectors(this.min,this.max).multiplyScalar(.5)},getSize:function(a){void 0===a&&(console.warn("THREE.Box3: .getSize() target is now required"),
-a=new p);return this.isEmpty()?a.set(0,0,0):a.subVectors(this.max,this.min)},expandByPoint:function(a){this.min.min(a);this.max.max(a);return this},expandByVector:function(a){this.min.sub(a);this.max.add(a);return this},expandByScalar:function(a){this.min.addScalar(-a);this.max.addScalar(a);return this},expandByObject:function(){function a(a){var f=a.geometry;if(void 0!==f)if(f.isGeometry)for(f=f.vertices,c=0,d=f.length;c<d;c++)e.copy(f[c]),e.applyMatrix4(a.matrixWorld),b.expandByPoint(e);else if(f.isBufferGeometry&&
-(f=f.attributes.position,void 0!==f))for(c=0,d=f.count;c<d;c++)e.fromBufferAttribute(f,c).applyMatrix4(a.matrixWorld),b.expandByPoint(e)}var b,c,d,e=new p;return function(c){b=this;c.updateMatrixWorld(!0);c.traverse(a);return this}}(),containsPoint:function(a){return a.x<this.min.x||a.x>this.max.x||a.y<this.min.y||a.y>this.max.y||a.z<this.min.z||a.z>this.max.z?!1:!0},containsBox:function(a){return this.min.x<=a.min.x&&a.max.x<=this.max.x&&this.min.y<=a.min.y&&a.max.y<=this.max.y&&this.min.z<=a.min.z&&
-a.max.z<=this.max.z},getParameter:function(a,b){void 0===b&&(console.warn("THREE.Box3: .getParameter() target is now required"),b=new p);return b.set((a.x-this.min.x)/(this.max.x-this.min.x),(a.y-this.min.y)/(this.max.y-this.min.y),(a.z-this.min.z)/(this.max.z-this.min.z))},intersectsBox:function(a){return a.max.x<this.min.x||a.min.x>this.max.x||a.max.y<this.min.y||a.min.y>this.max.y||a.max.z<this.min.z||a.min.z>this.max.z?!1:!0},intersectsSphere:function(){var a=new p;return function(b){this.clampPoint(b.center,
-a);return a.distanceToSquared(b.center)<=b.radius*b.radius}}(),intersectsPlane:function(a){if(0<a.normal.x){var b=a.normal.x*this.min.x;var c=a.normal.x*this.max.x}else b=a.normal.x*this.max.x,c=a.normal.x*this.min.x;0<a.normal.y?(b+=a.normal.y*this.min.y,c+=a.normal.y*this.max.y):(b+=a.normal.y*this.max.y,c+=a.normal.y*this.min.y);0<a.normal.z?(b+=a.normal.z*this.min.z,c+=a.normal.z*this.max.z):(b+=a.normal.z*this.max.z,c+=a.normal.z*this.min.z);return b<=a.constant&&c>=a.constant},intersectsTriangle:function(){function a(a){var e;
-var f=0;for(e=a.length-3;f<=e;f+=3){h.fromArray(a,f);var g=m.x*Math.abs(h.x)+m.y*Math.abs(h.y)+m.z*Math.abs(h.z),l=b.dot(h),k=c.dot(h),n=d.dot(h);if(Math.max(-Math.max(l,k,n),Math.min(l,k,n))>g)return!1}return!0}var b=new p,c=new p,d=new p,e=new p,f=new p,g=new p,h=new p,l=new p,m=new p,k=new p;return function(h){if(this.isEmpty())return!1;this.getCenter(l);m.subVectors(this.max,l);b.subVectors(h.a,l);c.subVectors(h.b,l);d.subVectors(h.c,l);e.subVectors(c,b);f.subVectors(d,c);g.subVectors(b,d);h=
-[0,-e.z,e.y,0,-f.z,f.y,0,-g.z,g.y,e.z,0,-e.x,f.z,0,-f.x,g.z,0,-g.x,-e.y,e.x,0,-f.y,f.x,0,-g.y,g.x,0];if(!a(h))return!1;h=[1,0,0,0,1,0,0,0,1];if(!a(h))return!1;k.crossVectors(e,f);h=[k.x,k.y,k.z];return a(h)}}(),clampPoint:function(a,b){void 0===b&&(console.warn("THREE.Box3: .clampPoint() target is now required"),b=new p);return b.copy(a).clamp(this.min,this.max)},distanceToPoint:function(){var a=new p;return function(b){return a.copy(b).clamp(this.min,this.max).sub(b).length()}}(),getBoundingSphere:function(){var a=
-new p;return function(b){void 0===b&&(console.warn("THREE.Box3: .getBoundingSphere() target is now required"),b=new Ea);this.getCenter(b.center);b.radius=.5*this.getSize(a).length();return b}}(),intersect:function(a){this.min.max(a.min);this.max.min(a.max);this.isEmpty()&&this.makeEmpty();return this},union:function(a){this.min.min(a.min);this.max.max(a.max);return this},applyMatrix4:function(){var a=[new p,new p,new p,new p,new p,new p,new p,new p];return function(b){if(this.isEmpty())return this;
-a[0].set(this.min.x,this.min.y,this.min.z).applyMatrix4(b);a[1].set(this.min.x,this.min.y,this.max.z).applyMatrix4(b);a[2].set(this.min.x,this.max.y,this.min.z).applyMatrix4(b);a[3].set(this.min.x,this.max.y,this.max.z).applyMatrix4(b);a[4].set(this.max.x,this.min.y,this.min.z).applyMatrix4(b);a[5].set(this.max.x,this.min.y,this.max.z).applyMatrix4(b);a[6].set(this.max.x,this.max.y,this.min.z).applyMatrix4(b);a[7].set(this.max.x,this.max.y,this.max.z).applyMatrix4(b);this.setFromPoints(a);return this}}(),
-translate:function(a){this.min.add(a);this.max.add(a);return this},equals:function(a){return a.min.equals(this.min)&&a.max.equals(this.max)}});Object.assign(Ea.prototype,{set:function(a,b){this.center.copy(a);this.radius=b;return this},setFromPoints:function(){var a=new Va;return function(b,c){var d=this.center;void 0!==c?d.copy(c):a.setFromPoints(b).getCenter(d);for(var e=c=0,f=b.length;e<f;e++)c=Math.max(c,d.distanceToSquared(b[e]));this.radius=Math.sqrt(c);return this}}(),clone:function(){return(new this.constructor).copy(this)},
-copy:function(a){this.center.copy(a.center);this.radius=a.radius;return this},empty:function(){return 0>=this.radius},containsPoint:function(a){return a.distanceToSquared(this.center)<=this.radius*this.radius},distanceToPoint:function(a){return a.distanceTo(this.center)-this.radius},intersectsSphere:function(a){var b=this.radius+a.radius;return a.center.distanceToSquared(this.center)<=b*b},intersectsBox:function(a){return a.intersectsSphere(this)},intersectsPlane:function(a){return Math.abs(a.distanceToPoint(this.center))<=
-this.radius},clampPoint:function(a,b){var c=this.center.distanceToSquared(a);void 0===b&&(console.warn("THREE.Sphere: .clampPoint() target is now required"),b=new p);b.copy(a);c>this.radius*this.radius&&(b.sub(this.center).normalize(),b.multiplyScalar(this.radius).add(this.center));return b},getBoundingBox:function(a){void 0===a&&(console.warn("THREE.Sphere: .getBoundingBox() target is now required"),a=new Va);a.set(this.center,this.center);a.expandByScalar(this.radius);return a},applyMatrix4:function(a){this.center.applyMatrix4(a);
-this.radius*=a.getMaxScaleOnAxis();return this},translate:function(a){this.center.add(a);return this},equals:function(a){return a.center.equals(this.center)&&a.radius===this.radius}});Object.assign(Fa.prototype,{set:function(a,b){this.normal.copy(a);this.constant=b;return this},setComponents:function(a,b,c,d){this.normal.set(a,b,c);this.constant=d;return this},setFromNormalAndCoplanarPoint:function(a,b){this.normal.copy(a);this.constant=-b.dot(this.normal);return this},setFromCoplanarPoints:function(){var a=
-new p,b=new p;return function(c,d,e){d=a.subVectors(e,d).cross(b.subVectors(c,d)).normalize();this.setFromNormalAndCoplanarPoint(d,c);return this}}(),clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.normal.copy(a.normal);this.constant=a.constant;return this},normalize:function(){var a=1/this.normal.length();this.normal.multiplyScalar(a);this.constant*=a;return this},negate:function(){this.constant*=-1;this.normal.negate();return this},distanceToPoint:function(a){return this.normal.dot(a)+
-this.constant},distanceToSphere:function(a){return this.distanceToPoint(a.center)-a.radius},projectPoint:function(a,b){void 0===b&&(console.warn("THREE.Plane: .projectPoint() target is now required"),b=new p);return b.copy(this.normal).multiplyScalar(-this.distanceToPoint(a)).add(a)},intersectLine:function(){var a=new p;return function(b,c){void 0===c&&(console.warn("THREE.Plane: .intersectLine() target is now required"),c=new p);var d=b.delta(a),e=this.normal.dot(d);if(0===e){if(0===this.distanceToPoint(b.start))return c.copy(b.start)}else if(e=
--(b.start.dot(this.normal)+this.constant)/e,!(0>e||1<e))return c.copy(d).multiplyScalar(e).add(b.start)}}(),intersectsLine:function(a){var b=this.distanceToPoint(a.start);a=this.distanceToPoint(a.end);return 0>b&&0<a||0>a&&0<b},intersectsBox:function(a){return a.intersectsPlane(this)},intersectsSphere:function(a){return a.intersectsPlane(this)},coplanarPoint:function(a){void 0===a&&(console.warn("THREE.Plane: .coplanarPoint() target is now required"),a=new p);return a.copy(this.normal).multiplyScalar(-this.constant)},
-applyMatrix4:function(){var a=new p,b=new sa;return function(c,d){d=d||b.getNormalMatrix(c);c=this.coplanarPoint(a).applyMatrix4(c);d=this.normal.applyMatrix3(d).normalize();this.constant=-c.dot(d);return this}}(),translate:function(a){this.constant-=a.dot(this.normal);return this},equals:function(a){return a.normal.equals(this.normal)&&a.constant===this.constant}});Object.assign(ld.prototype,{set:function(a,b,c,d,e,f){var g=this.planes;g[0].copy(a);g[1].copy(b);g[2].copy(c);g[3].copy(d);g[4].copy(e);
-g[5].copy(f);return this},clone:function(){return(new this.constructor).copy(this)},copy:function(a){for(var b=this.planes,c=0;6>c;c++)b[c].copy(a.planes[c]);return this},setFromMatrix:function(a){var b=this.planes,c=a.elements;a=c[0];var d=c[1],e=c[2],f=c[3],g=c[4],h=c[5],l=c[6],m=c[7],k=c[8],n=c[9],p=c[10],r=c[11],q=c[12],v=c[13],x=c[14];c=c[15];b[0].setComponents(f-a,m-g,r-k,c-q).normalize();b[1].setComponents(f+a,m+g,r+k,c+q).normalize();b[2].setComponents(f+d,m+h,r+n,c+v).normalize();b[3].setComponents(f-
-d,m-h,r-n,c-v).normalize();b[4].setComponents(f-e,m-l,r-p,c-x).normalize();b[5].setComponents(f+e,m+l,r+p,c+x).normalize();return this},intersectsObject:function(){var a=new Ea;return function(b){var c=b.geometry;null===c.boundingSphere&&c.computeBoundingSphere();a.copy(c.boundingSphere).applyMatrix4(b.matrixWorld);return this.intersectsSphere(a)}}(),intersectsSprite:function(){var a=new Ea;return function(b){a.center.set(0,0,0);a.radius=.7071067811865476;a.applyMatrix4(b.matrixWorld);return this.intersectsSphere(a)}}(),
-intersectsSphere:function(a){var b=this.planes,c=a.center;a=-a.radius;for(var d=0;6>d;d++)if(b[d].distanceToPoint(c)<a)return!1;return!0},intersectsBox:function(){var a=new p,b=new p;return function(c){for(var d=this.planes,e=0;6>e;e++){var f=d[e];a.x=0<f.normal.x?c.min.x:c.max.x;b.x=0<f.normal.x?c.max.x:c.min.x;a.y=0<f.normal.y?c.min.y:c.max.y;b.y=0<f.normal.y?c.max.y:c.min.y;a.z=0<f.normal.z?c.min.z:c.max.z;b.z=0<f.normal.z?c.max.z:c.min.z;var g=f.distanceToPoint(a);f=f.distanceToPoint(b);if(0>
-g&&0>f)return!1}return!0}}(),containsPoint:function(a){for(var b=this.planes,c=0;6>c;c++)if(0>b[c].distanceToPoint(a))return!1;return!0}});var V={alphamap_fragment:"#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif\n",alphamap_pars_fragment:"#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif\n",alphatest_fragment:"#ifdef ALPHATEST\n\tif ( diffuseColor.a < ALPHATEST ) discard;\n#endif\n",aomap_fragment:"#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( PHYSICAL )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );\n\t#endif\n#endif\n",
-aomap_pars_fragment:"#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif",begin_vertex:"\nvec3 transformed = vec3( position );\n",beginnormal_vertex:"\nvec3 objectNormal = vec3( normal );\n",bsdfs:"float punctualLightIntensityToIrradianceFactor( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n\tif( decayExponent > 0.0 ) {\n#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\t\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\t\tfloat maxDistanceCutoffFactor = pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t\treturn distanceFalloff * maxDistanceCutoffFactor;\n#else\n\t\treturn pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\n#endif\n\t}\n\treturn 1.0;\n}\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 specularColor, const in float dotLH ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotLH - 6.98316 ) * dotLH );\n\treturn ( 1.0 - specularColor ) * fresnel + specularColor;\n}\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gl = dotNL + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\tfloat gv = dotNV + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\treturn 1.0 / ( gl * gv );\n}\nfloat G_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n\tfloat dotNL = saturate( dot( geometry.normal, incidentLight.direction ) );\n\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( G * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE  = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS  = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nvec3 BRDF_Specular_GGX_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness ) {\n\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\tvec2 AB = vec2( -1.04, 1.04 ) * a004 + r.zw;\n\treturn specularColor * AB.x + AB.y;\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\n\treturn ( 2.0 / pow2( ggxRoughness + 0.0001 ) - 2.0 );\n}\nfloat BlinnExponentToGGXRoughness( const in float blinnExponent ) {\n\treturn sqrt( 2.0 / ( blinnExponent + 2.0 ) );\n}\n",
-bumpmap_pars_fragment:"#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy ) {\n\t\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\n\t\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 );\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif\n",
-clipping_planes_fragment:"#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vViewPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vViewPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\tif ( clipped ) discard;\n\t#endif\n#endif\n",
-clipping_planes_pars_fragment:"#if NUM_CLIPPING_PLANES > 0\n\t#if ! defined( PHYSICAL ) && ! defined( PHONG )\n\t\tvarying vec3 vViewPosition;\n\t#endif\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif\n",clipping_planes_pars_vertex:"#if NUM_CLIPPING_PLANES > 0 && ! defined( PHYSICAL ) && ! defined( PHONG )\n\tvarying vec3 vViewPosition;\n#endif\n",clipping_planes_vertex:"#if NUM_CLIPPING_PLANES > 0 && ! defined( PHYSICAL ) && ! defined( PHONG )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n",
-color_fragment:"#ifdef USE_COLOR\n\tdiffuseColor.rgb *= vColor;\n#endif",color_pars_fragment:"#ifdef USE_COLOR\n\tvarying vec3 vColor;\n#endif\n",color_pars_vertex:"#ifdef USE_COLOR\n\tvarying vec3 vColor;\n#endif",color_vertex:"#ifdef USE_COLOR\n\tvColor.xyz = color.xyz;\n#endif",common:"#define PI 3.14159265359\n#define PI2 6.28318530718\n#define PI_HALF 1.5707963267949\n#define RECIPROCAL_PI 0.31830988618\n#define RECIPROCAL_PI2 0.15915494\n#define LOG2 1.442695\n#define EPSILON 1e-6\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#define whiteCompliment(a) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract(sin(sn) * c);\n}\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\tfloat distance = dot( planeNormal, point - pointOnPlane );\n\treturn - distance * planeNormal + point;\n}\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn sign( dot( point - pointOnPlane, planeNormal ) );\n}\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat linearToRelativeLuminance( const in vec3 color ) {\n\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\n\treturn dot( weights, color.rgb );\n}\n",
-cube_uv_reflection_fragment:"#ifdef ENVMAP_TYPE_CUBE_UV\n#define cubeUV_textureSize (1024.0)\nint getFaceFromDirection(vec3 direction) {\n\tvec3 absDirection = abs(direction);\n\tint face = -1;\n\tif( absDirection.x > absDirection.z ) {\n\t\tif(absDirection.x > absDirection.y )\n\t\t\tface = direction.x > 0.0 ? 0 : 3;\n\t\telse\n\t\t\tface = direction.y > 0.0 ? 1 : 4;\n\t}\n\telse {\n\t\tif(absDirection.z > absDirection.y )\n\t\t\tface = direction.z > 0.0 ? 2 : 5;\n\t\telse\n\t\t\tface = direction.y > 0.0 ? 1 : 4;\n\t}\n\treturn face;\n}\n#define cubeUV_maxLods1  (log2(cubeUV_textureSize*0.25) - 1.0)\n#define cubeUV_rangeClamp (exp2((6.0 - 1.0) * 2.0))\nvec2 MipLevelInfo( vec3 vec, float roughnessLevel, float roughness ) {\n\tfloat scale = exp2(cubeUV_maxLods1 - roughnessLevel);\n\tfloat dxRoughness = dFdx(roughness);\n\tfloat dyRoughness = dFdy(roughness);\n\tvec3 dx = dFdx( vec * scale * dxRoughness );\n\tvec3 dy = dFdy( vec * scale * dyRoughness );\n\tfloat d = max( dot( dx, dx ), dot( dy, dy ) );\n\td = clamp(d, 1.0, cubeUV_rangeClamp);\n\tfloat mipLevel = 0.5 * log2(d);\n\treturn vec2(floor(mipLevel), fract(mipLevel));\n}\n#define cubeUV_maxLods2 (log2(cubeUV_textureSize*0.25) - 2.0)\n#define cubeUV_rcpTextureSize (1.0 / cubeUV_textureSize)\nvec2 getCubeUV(vec3 direction, float roughnessLevel, float mipLevel) {\n\tmipLevel = roughnessLevel > cubeUV_maxLods2 - 3.0 ? 0.0 : mipLevel;\n\tfloat a = 16.0 * cubeUV_rcpTextureSize;\n\tvec2 exp2_packed = exp2( vec2( roughnessLevel, mipLevel ) );\n\tvec2 rcp_exp2_packed = vec2( 1.0 ) / exp2_packed;\n\tfloat powScale = exp2_packed.x * exp2_packed.y;\n\tfloat scale = rcp_exp2_packed.x * rcp_exp2_packed.y * 0.25;\n\tfloat mipOffset = 0.75*(1.0 - rcp_exp2_packed.y) * rcp_exp2_packed.x;\n\tbool bRes = mipLevel == 0.0;\n\tscale =  bRes && (scale < a) ? a : scale;\n\tvec3 r;\n\tvec2 offset;\n\tint face = getFaceFromDirection(direction);\n\tfloat rcpPowScale = 1.0 / powScale;\n\tif( face == 0) {\n\t\tr = vec3(direction.x, -direction.z, direction.y);\n\t\toffset = vec2(0.0+mipOffset,0.75 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? a : offset.y;\n\t}\n\telse if( face == 1) {\n\t\tr = vec3(direction.y, direction.x, direction.z);\n\t\toffset = vec2(scale+mipOffset, 0.75 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? a : offset.y;\n\t}\n\telse if( face == 2) {\n\t\tr = vec3(direction.z, direction.x, direction.y);\n\t\toffset = vec2(2.0*scale+mipOffset, 0.75 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? a : offset.y;\n\t}\n\telse if( face == 3) {\n\t\tr = vec3(direction.x, direction.z, direction.y);\n\t\toffset = vec2(0.0+mipOffset,0.5 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? 0.0 : offset.y;\n\t}\n\telse if( face == 4) {\n\t\tr = vec3(direction.y, direction.x, -direction.z);\n\t\toffset = vec2(scale+mipOffset, 0.5 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? 0.0 : offset.y;\n\t}\n\telse {\n\t\tr = vec3(direction.z, -direction.x, direction.y);\n\t\toffset = vec2(2.0*scale+mipOffset, 0.5 * rcpPowScale);\n\t\toffset.y = bRes && (offset.y < 2.0*a) ? 0.0 : offset.y;\n\t}\n\tr = normalize(r);\n\tfloat texelOffset = 0.5 * cubeUV_rcpTextureSize;\n\tvec2 s = ( r.yz / abs( r.x ) + vec2( 1.0 ) ) * 0.5;\n\tvec2 base = offset + vec2( texelOffset );\n\treturn base + s * ( scale - 2.0 * texelOffset );\n}\n#define cubeUV_maxLods3 (log2(cubeUV_textureSize*0.25) - 3.0)\nvec4 textureCubeUV(vec3 reflectedDirection, float roughness ) {\n\tfloat roughnessVal = roughness* cubeUV_maxLods3;\n\tfloat r1 = floor(roughnessVal);\n\tfloat r2 = r1 + 1.0;\n\tfloat t = fract(roughnessVal);\n\tvec2 mipInfo = MipLevelInfo(reflectedDirection, r1, roughness);\n\tfloat s = mipInfo.y;\n\tfloat level0 = mipInfo.x;\n\tfloat level1 = level0 + 1.0;\n\tlevel1 = level1 > 5.0 ? 5.0 : level1;\n\tlevel0 += min( floor( s + 0.5 ), 5.0 );\n\tvec2 uv_10 = getCubeUV(reflectedDirection, r1, level0);\n\tvec4 color10 = envMapTexelToLinear(texture2D(envMap, uv_10));\n\tvec2 uv_20 = getCubeUV(reflectedDirection, r2, level0);\n\tvec4 color20 = envMapTexelToLinear(texture2D(envMap, uv_20));\n\tvec4 result = mix(color10, color20, t);\n\treturn vec4(result.rgb, 1.0);\n}\n#endif\n",
-defaultnormal_vertex:"vec3 transformedNormal = normalMatrix * objectNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n",displacementmap_pars_vertex:"#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif\n",displacementmap_vertex:"#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, uv ).x * displacementScale + displacementBias );\n#endif\n",
-emissivemap_fragment:"#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif\n",emissivemap_pars_fragment:"#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif\n",encodings_fragment:"  gl_FragColor = linearToOutputTexel( gl_FragColor );\n",encodings_pars_fragment:"\nvec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.xyz, vec3( gammaFactor ) ), value.w );\n}\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.xyz, vec3( 1.0 / gammaFactor ) ), value.w );\n}\nvec4 sRGBToLinear( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.w );\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.w );\n}\nvec4 RGBEToLinear( in vec4 value ) {\n\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\n}\nvec4 LinearToRGBE( in vec4 value ) {\n\tfloat maxComponent = max( max( value.r, value.g ), value.b );\n\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\n\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\n}\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.xyz * value.w * maxRange, 1.0 );\n}\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.x, max( value.g, value.b ) );\n\tfloat M      = clamp( maxRGB / maxRange, 0.0, 1.0 );\n\tM            = ceil( M * 255.0 ) / 255.0;\n\treturn vec4( value.rgb / ( M * maxRange ), M );\n}\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\n}\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.x, max( value.g, value.b ) );\n\tfloat D      = max( maxRange / maxRGB, 1.0 );\n\tD            = min( floor( D ) / 255.0, 1.0 );\n\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\n}\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\nvec4 LinearToLogLuv( in vec4 value )  {\n\tvec3 Xp_Y_XYZp = value.rgb * cLogLuvM;\n\tXp_Y_XYZp = max(Xp_Y_XYZp, vec3(1e-6, 1e-6, 1e-6));\n\tvec4 vResult;\n\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\n\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\n\tvResult.w = fract(Le);\n\tvResult.z = (Le - (floor(vResult.w*255.0))/255.0)/255.0;\n\treturn vResult;\n}\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\nvec4 LogLuvToLinear( in vec4 value ) {\n\tfloat Le = value.z * 255.0 + value.w;\n\tvec3 Xp_Y_XYZp;\n\tXp_Y_XYZp.y = exp2((Le - 127.0) / 2.0);\n\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\n\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\n\tvec3 vRGB = Xp_Y_XYZp.rgb * cLogLuvInverseM;\n\treturn vec4( max(vRGB, 0.0), 1.0 );\n}\n",
-envmap_fragment:"#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\tvec3 cameraToVertex = normalize( vWorldPosition - cameraPosition );\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#elif defined( ENVMAP_TYPE_EQUIREC )\n\t\tvec2 sampleUV;\n\t\treflectVec = normalize( reflectVec );\n\t\tsampleUV.y = asin( clamp( reflectVec.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\t\tsampleUV.x = atan( reflectVec.z, reflectVec.x ) * RECIPROCAL_PI2 + 0.5;\n\t\tvec4 envColor = texture2D( envMap, sampleUV );\n\t#elif defined( ENVMAP_TYPE_SPHERE )\n\t\treflectVec = normalize( reflectVec );\n\t\tvec3 reflectView = normalize( ( viewMatrix * vec4( reflectVec, 0.0 ) ).xyz + vec3( 0.0, 0.0, 1.0 ) );\n\t\tvec4 envColor = texture2D( envMap, reflectView.xy * 0.5 + 0.5 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\tenvColor = envMapTexelToLinear( envColor );\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif\n",
-envmap_pars_fragment:"#if defined( USE_ENVMAP ) || defined( PHYSICAL )\n\tuniform float reflectivity;\n\tuniform float envMapIntensity;\n#endif\n#ifdef USE_ENVMAP\n\t#if ! defined( PHYSICAL ) && ( defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) )\n\t\tvarying vec3 vWorldPosition;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\tuniform float flipEnvMap;\n\tuniform int maxMipLevel;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( PHYSICAL )\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif\n",
-envmap_pars_vertex:"#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif\n",envmap_vertex:"#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif\n",
-fog_vertex:"\n#ifdef USE_FOG\nfogDepth = -mvPosition.z;\n#endif",fog_pars_vertex:"#ifdef USE_FOG\n  varying float fogDepth;\n#endif\n",fog_fragment:"#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = whiteCompliment( exp2( - fogDensity * fogDensity * fogDepth * fogDepth * LOG2 ) );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, fogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif\n",fog_pars_fragment:"#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float fogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif\n",
-gradientmap_pars_fragment:"#ifdef TOON\n\tuniform sampler2D gradientMap;\n\tvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\t\tfloat dotNL = dot( normal, lightDirection );\n\t\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t\t#ifdef USE_GRADIENTMAP\n\t\t\treturn texture2D( gradientMap, coord ).rgb;\n\t\t#else\n\t\t\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\n\t\t#endif\n\t}\n#endif\n",lightmap_fragment:"#ifdef USE_LIGHTMAP\n\treflectedLight.indirectDiffuse += PI * texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n#endif\n",
-lightmap_pars_fragment:"#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif",lights_lambert_vertex:"vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n\tvLightBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\n#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tgetPointDirectLightIrradiance( pointLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tgetSpotDirectLightIrradiance( spotLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n#endif\n#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tgetDirectionalDirectLightIrradiance( directionalLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\tvLightFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\n\t\t#endif\n\t}\n#endif\n",
-lights_pars_begin:"uniform vec3 ambientLightColor;\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treturn irradiance;\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tint shadow;\n\t\tfloat shadowBias;\n\t\tfloat shadowRadius;\n\t\tvec2 shadowMapSize;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalDirectLightIrradiance( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tdirectLight.color = directionalLight.color;\n\t\tdirectLight.direction = directionalLight.direction;\n\t\tdirectLight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tint shadow;\n\t\tfloat shadowBias;\n\t\tfloat shadowRadius;\n\t\tvec2 shadowMapSize;\n\t\tfloat shadowCameraNear;\n\t\tfloat shadowCameraFar;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointDirectLightIrradiance( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tdirectLight.color = pointLight.color;\n\t\tdirectLight.color *= punctualLightIntensityToIrradianceFactor( lightDistance, pointLight.distance, pointLight.decay );\n\t\tdirectLight.visible = ( directLight.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t\tint shadow;\n\t\tfloat shadowBias;\n\t\tfloat shadowRadius;\n\t\tvec2 shadowMapSize;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotDirectLightIrradiance( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight directLight  ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tfloat angleCos = dot( directLight.direction, spotLight.direction );\n\t\tif ( angleCos > spotLight.coneCos ) {\n\t\t\tfloat spotEffect = smoothstep( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\t\tdirectLight.color = spotLight.color;\n\t\t\tdirectLight.color *= spotEffect * punctualLightIntensityToIrradianceFactor( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tdirectLight.visible = true;\n\t\t} else {\n\t\t\tdirectLight.color = vec3( 0.0 );\n\t\t\tdirectLight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\n\t\tfloat dotNL = dot( geometry.normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tirradiance *= PI;\n\t\t#endif\n\t\treturn irradiance;\n\t}\n#endif\n",
-lights_pars_maps:"#if defined( USE_ENVMAP ) && defined( PHYSICAL )\n\tvec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\n\t\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\tvec4 envMapColor = textureCubeUV( queryVec, 1.0 );\n\t\t#else\n\t\t\tvec4 envMapColor = vec4( 0.0 );\n\t\t#endif\n\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t}\n\tfloat getSpecularMIPLevel( const in float blinnShininessExponent, const in int maxMIPLevel ) {\n\t\tfloat maxMIPLevelScalar = float( maxMIPLevel );\n\t\tfloat desiredMIPLevel = maxMIPLevelScalar + 0.79248 - 0.5 * log2( pow2( blinnShininessExponent ) + 1.0 );\n\t\treturn clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\n\t}\n\tvec3 getLightProbeIndirectRadiance( const in GeometricContext geometry, const in float blinnShininessExponent, const in int maxMIPLevel ) {\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( -geometry.viewDir, geometry.normal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( -geometry.viewDir, geometry.normal, refractionRatio );\n\t\t#endif\n\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\tfloat specularMIPLevel = getSpecularMIPLevel( blinnShininessExponent, maxMIPLevel );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\tvec4 envMapColor = textureCubeUV(queryReflectVec, BlinnExponentToGGXRoughness(blinnShininessExponent));\n\t\t#elif defined( ENVMAP_TYPE_EQUIREC )\n\t\t\tvec2 sampleUV;\n\t\t\tsampleUV.y = asin( clamp( reflectVec.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\t\t\tsampleUV.x = atan( reflectVec.z, reflectVec.x ) * RECIPROCAL_PI2 + 0.5;\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = texture2DLodEXT( envMap, sampleUV, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = texture2D( envMap, sampleUV, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_SPHERE )\n\t\t\tvec3 reflectView = normalize( ( viewMatrix * vec4( reflectVec, 0.0 ) ).xyz + vec3( 0.0,0.0,1.0 ) );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = texture2DLodEXT( envMap, reflectView.xy * 0.5 + 0.5, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = texture2D( envMap, reflectView.xy * 0.5 + 0.5, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#endif\n\t\treturn envMapColor.rgb * envMapIntensity;\n\t}\n#endif\n",
-lights_phong_fragment:"BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;\n",lights_phong_pars_fragment:"varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct BlinnPhongMaterial {\n\tvec3\tdiffuseColor;\n\tvec3\tspecularColor;\n\tfloat\tspecularShininess;\n\tfloat\tspecularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\t#ifdef TOON\n\t\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\t#else\n\t\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\t\tvec3 irradiance = dotNL * directLight.color;\n\t#endif\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)\n",
-lights_physical_fragment:"PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nmaterial.specularRoughness = clamp( roughnessFactor, 0.04, 1.0 );\n#ifdef STANDARD\n\tmaterial.specularColor = mix( vec3( DEFAULT_SPECULAR_COEFFICIENT ), diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( MAXIMUM_SPECULAR_COEFFICIENT * pow2( reflectivity ) ), diffuseColor.rgb, metalnessFactor );\n\tmaterial.clearCoat = saturate( clearCoat );\tmaterial.clearCoatRoughness = clamp( clearCoatRoughness, 0.04, 1.0 );\n#endif\n",
-lights_physical_pars_fragment:"struct PhysicalMaterial {\n\tvec3\tdiffuseColor;\n\tfloat\tspecularRoughness;\n\tvec3\tspecularColor;\n\t#ifndef STANDARD\n\t\tfloat clearCoat;\n\t\tfloat clearCoatRoughness;\n\t#endif\n};\n#define MAXIMUM_SPECULAR_COEFFICIENT 0.16\n#define DEFAULT_SPECULAR_COEFFICIENT 0.04\nfloat clearCoatDHRApprox( const in float roughness, const in float dotNL ) {\n\treturn DEFAULT_SPECULAR_COEFFICIENT + ( 1.0 - DEFAULT_SPECULAR_COEFFICIENT ) * ( pow( 1.0 - dotNL, 5.0 ) * pow( 1.0 - roughness, 2.0 ) );\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.specularRoughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos - halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos + halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos + halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos - halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(    0, 1,    0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\t#ifndef STANDARD\n\t\tfloat clearCoatDHR = material.clearCoat * clearCoatDHRApprox( material.clearCoatRoughness, dotNL );\n\t#else\n\t\tfloat clearCoatDHR = 0.0;\n\t#endif\n\treflectedLight.directSpecular += ( 1.0 - clearCoatDHR ) * irradiance * BRDF_Specular_GGX( directLight, geometry, material.specularColor, material.specularRoughness );\n\treflectedLight.directDiffuse += ( 1.0 - clearCoatDHR ) * irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n\t#ifndef STANDARD\n\t\treflectedLight.directSpecular += irradiance * material.clearCoat * BRDF_Specular_GGX( directLight, geometry, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearCoatRoughness );\n\t#endif\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 clearCoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t#ifndef STANDARD\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\tfloat dotNL = dotNV;\n\t\tfloat clearCoatDHR = material.clearCoat * clearCoatDHRApprox( material.clearCoatRoughness, dotNL );\n\t#else\n\t\tfloat clearCoatDHR = 0.0;\n\t#endif\n\treflectedLight.indirectSpecular += ( 1.0 - clearCoatDHR ) * radiance * BRDF_Specular_GGX_Environment( geometry, material.specularColor, material.specularRoughness );\n\t#ifndef STANDARD\n\t\treflectedLight.indirectSpecular += clearCoatRadiance * material.clearCoat * BRDF_Specular_GGX_Environment( geometry, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearCoatRoughness );\n\t#endif\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\n#define Material_BlinnShininessExponent( material )   GGXRoughnessToBlinnExponent( material.specularRoughness )\n#define Material_ClearCoat_BlinnShininessExponent( material )   GGXRoughnessToBlinnExponent( material.clearCoatRoughness )\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}\n",
-lights_fragment_begin:"\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = normalize( vViewPosition );\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointDirectLightIrradiance( pointLight, geometry, directLight );\n\t\t#ifdef USE_SHADOWMAP\n\t\tdirectLight.color *= all( bvec2( pointLight.shadow, directLight.visible ) ) ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotDirectLightIrradiance( spotLight, geometry, directLight );\n\t\t#ifdef USE_SHADOWMAP\n\t\tdirectLight.color *= all( bvec2( spotLight.shadow, directLight.visible ) ) ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalDirectLightIrradiance( directionalLight, geometry, directLight );\n\t\t#ifdef USE_SHADOWMAP\n\t\tdirectLight.color *= all( bvec2( directionalLight.shadow, directLight.visible ) ) ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t}\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearCoatRadiance = vec3( 0.0 );\n#endif\n",
-lights_fragment_maps:"#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec3 lightMapIrradiance = texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tlightMapIrradiance *= PI;\n\t\t#endif\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( PHYSICAL ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tirradiance += getLightProbeIndirectIrradiance( geometry, maxMipLevel );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getLightProbeIndirectRadiance( geometry, Material_BlinnShininessExponent( material ), maxMipLevel );\n\t#ifndef STANDARD\n\t\tclearCoatRadiance += getLightProbeIndirectRadiance( geometry, Material_ClearCoat_BlinnShininessExponent( material ), maxMipLevel );\n\t#endif\n#endif\n",
-lights_fragment_end:"#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, clearCoatRadiance, geometry, material, reflectedLight );\n#endif\n",logdepthbuf_fragment:"#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif",logdepthbuf_pars_fragment:"#ifdef USE_LOGDEPTHBUF\n\tuniform float logDepthBufFC;\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t#endif\n#endif\n",
-logdepthbuf_pars_vertex:"#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t#endif\n\tuniform float logDepthBufFC;\n#endif",logdepthbuf_vertex:"#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t#else\n\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\tgl_Position.z *= gl_Position.w;\n\t#endif\n#endif\n",map_fragment:"#ifdef USE_MAP\n\tvec4 texelColor = texture2D( map, vUv );\n\ttexelColor = mapTexelToLinear( texelColor );\n\tdiffuseColor *= texelColor;\n#endif\n",
-map_pars_fragment:"#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n",map_particle_fragment:"#ifdef USE_MAP\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n\tvec4 mapTexel = texture2D( map, uv );\n\tdiffuseColor *= mapTexelToLinear( mapTexel );\n#endif\n",map_particle_pars_fragment:"#ifdef USE_MAP\n\tuniform mat3 uvTransform;\n\tuniform sampler2D map;\n#endif\n",metalnessmap_fragment:"float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif\n",
-metalnessmap_pars_fragment:"#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif",morphnormal_vertex:"#ifdef USE_MORPHNORMALS\n\tobjectNormal += ( morphNormal0 - normal ) * morphTargetInfluences[ 0 ];\n\tobjectNormal += ( morphNormal1 - normal ) * morphTargetInfluences[ 1 ];\n\tobjectNormal += ( morphNormal2 - normal ) * morphTargetInfluences[ 2 ];\n\tobjectNormal += ( morphNormal3 - normal ) * morphTargetInfluences[ 3 ];\n#endif\n",morphtarget_pars_vertex:"#ifdef USE_MORPHTARGETS\n\t#ifndef USE_MORPHNORMALS\n\tuniform float morphTargetInfluences[ 8 ];\n\t#else\n\tuniform float morphTargetInfluences[ 4 ];\n\t#endif\n#endif",
-morphtarget_vertex:"#ifdef USE_MORPHTARGETS\n\ttransformed += ( morphTarget0 - position ) * morphTargetInfluences[ 0 ];\n\ttransformed += ( morphTarget1 - position ) * morphTargetInfluences[ 1 ];\n\ttransformed += ( morphTarget2 - position ) * morphTargetInfluences[ 2 ];\n\ttransformed += ( morphTarget3 - position ) * morphTargetInfluences[ 3 ];\n\t#ifndef USE_MORPHNORMALS\n\ttransformed += ( morphTarget4 - position ) * morphTargetInfluences[ 4 ];\n\ttransformed += ( morphTarget5 - position ) * morphTargetInfluences[ 5 ];\n\ttransformed += ( morphTarget6 - position ) * morphTargetInfluences[ 6 ];\n\ttransformed += ( morphTarget7 - position ) * morphTargetInfluences[ 7 ];\n\t#endif\n#endif\n",
-normal_fragment_begin:"#ifdef FLAT_SHADED\n\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t#endif\n#endif\n",normal_fragment_maps:"#ifdef USE_NORMALMAP\n\tnormal = perturbNormal2Arb( -vViewPosition, normal );\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd() );\n#endif\n",
-normalmap_pars_fragment:"#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm ) {\n\t\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\n\t\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tvec3 S = normalize( q0 * st1.t - q1 * st0.t );\n\t\tvec3 T = normalize( -q0 * st1.s + q1 * st0.s );\n\t\tvec3 N = normalize( surf_norm );\n\t\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t\tmapN.xy = normalScale * mapN.xy;\n\t\tmat3 tsn = mat3( S, T, N );\n\t\treturn normalize( tsn * mapN );\n\t}\n#endif\n",
-packing:"vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256.,  256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn (( near + viewZ ) * far ) / (( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}\n",
-premultiplied_alpha_fragment:"#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif\n",project_vertex:"vec4 mvPosition = modelViewMatrix * vec4( transformed, 1.0 );\ngl_Position = projectionMatrix * mvPosition;\n",dithering_fragment:"#if defined( DITHERING )\n  gl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif\n",dithering_pars_fragment:"#if defined( DITHERING )\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif\n",
-roughnessmap_fragment:"float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif\n",roughnessmap_pars_fragment:"#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif",shadowmap_pars_fragment:"#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHTS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHTS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHTS ];\n\t#endif\n\t#if NUM_SPOT_LIGHTS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHTS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHTS ];\n\t#endif\n\t#if NUM_POINT_LIGHTS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHTS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHTS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tfloat texture2DShadowLerp( sampler2D depths, vec2 size, vec2 uv, float compare ) {\n\t\tconst vec2 offset = vec2( 0.0, 1.0 );\n\t\tvec2 texelSize = vec2( 1.0 ) / size;\n\t\tvec2 centroidUV = floor( uv * size + 0.5 ) / size;\n\t\tfloat lb = texture2DCompare( depths, centroidUV + texelSize * offset.xx, compare );\n\t\tfloat lt = texture2DCompare( depths, centroidUV + texelSize * offset.xy, compare );\n\t\tfloat rb = texture2DCompare( depths, centroidUV + texelSize * offset.yx, compare );\n\t\tfloat rt = texture2DCompare( depths, centroidUV + texelSize * offset.yy, compare );\n\t\tvec2 f = fract( uv * size + 0.5 );\n\t\tfloat a = mix( lb, lt, f.y );\n\t\tfloat b = mix( rb, rt, f.y );\n\t\tfloat c = mix( a, b, f.x );\n\t\treturn c;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tshadow = (\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif\n",
-shadowmap_pars_vertex:"#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHTS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHTS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHTS ];\n\t#endif\n\t#if NUM_SPOT_LIGHTS > 0\n\t\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHTS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHTS ];\n\t#endif\n\t#if NUM_POINT_LIGHTS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHTS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHTS ];\n\t#endif\n#endif\n",
-shadowmap_vertex:"#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * worldPosition;\n\t}\n\t#endif\n\t#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * worldPosition;\n\t}\n\t#endif\n\t#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * worldPosition;\n\t}\n\t#endif\n#endif\n",
-shadowmask_pars_fragment:"float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHTS > 0\n\tDirectionalLight directionalLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tshadow *= bool( directionalLight.shadow ) ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#endif\n\t#if NUM_SPOT_LIGHTS > 0\n\tSpotLight spotLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tshadow *= bool( spotLight.shadow ) ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t}\n\t#endif\n\t#if NUM_POINT_LIGHTS > 0\n\tPointLight pointLight;\n\t#pragma unroll_loop\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tshadow *= bool( pointLight.shadow ) ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#endif\n\t#endif\n\treturn shadow;\n}\n",
-skinbase_vertex:"#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif",skinning_pars_vertex:"#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\t#ifdef BONE_TEXTURE\n\t\tuniform sampler2D boneTexture;\n\t\tuniform int boneTextureSize;\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tfloat j = i * 4.0;\n\t\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\t\ty = dy * ( y + 0.5 );\n\t\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\t\treturn bone;\n\t\t}\n\t#else\n\t\tuniform mat4 boneMatrices[ MAX_BONES ];\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tmat4 bone = boneMatrices[ int(i) ];\n\t\t\treturn bone;\n\t\t}\n\t#endif\n#endif\n",
-skinning_vertex:"#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif\n",skinnormal_vertex:"#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix  = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n#endif\n",
-specularmap_fragment:"float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif",specularmap_pars_fragment:"#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif",tonemapping_fragment:"#if defined( TONE_MAPPING )\n  gl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif\n",tonemapping_pars_fragment:"#ifndef saturate\n\t#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nuniform float toneMappingWhitePoint;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\n#define Uncharted2Helper( x ) max( ( ( x * ( 0.15 * x + 0.10 * 0.50 ) + 0.20 * 0.02 ) / ( x * ( 0.15 * x + 0.50 ) + 0.20 * 0.30 ) ) - 0.02 / 0.30, vec3( 0.0 ) )\nvec3 Uncharted2ToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( Uncharted2Helper( color ) / Uncharted2Helper( vec3( toneMappingWhitePoint ) ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\n",
-uv_pars_fragment:"#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )\n\tvarying vec2 vUv;\n#endif",uv_pars_vertex:"#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )\n\tvarying vec2 vUv;\n\tuniform mat3 uvTransform;\n#endif\n",
-uv_vertex:"#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif",uv2_pars_fragment:"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif",uv2_pars_vertex:"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n#endif",
-uv2_vertex:"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = uv2;\n#endif",worldpos_vertex:"#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP )\n\tvec4 worldPosition = modelMatrix * vec4( transformed, 1.0 );\n#endif\n",cube_frag:"uniform samplerCube tCube;\nuniform float tFlip;\nuniform float opacity;\nvarying vec3 vWorldPosition;\nvoid main() {\n\tgl_FragColor = textureCube( tCube, vec3( tFlip * vWorldPosition.x, vWorldPosition.yz ) );\n\tgl_FragColor.a *= opacity;\n}\n",
-cube_vert:"varying vec3 vWorldPosition;\n#include <common>\nvoid main() {\n\tvWorldPosition = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}\n",depth_frag:"#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - gl_FragCoord.z ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( gl_FragCoord.z );\n\t#endif\n}\n",
-depth_vert:"#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n}\n",
-distanceRGBA_frag:"#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}\n",
-distanceRGBA_vert:"#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}\n",
-equirect_frag:"uniform sampler2D tEquirect;\nvarying vec3 vWorldPosition;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldPosition );\n\tvec2 sampleUV;\n\tsampleUV.y = asin( clamp( direction.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\tsampleUV.x = atan( direction.z, direction.x ) * RECIPROCAL_PI2 + 0.5;\n\tgl_FragColor = texture2D( tEquirect, sampleUV );\n}\n",equirect_vert:"varying vec3 vWorldPosition;\n#include <common>\nvoid main() {\n\tvWorldPosition = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}\n",
-linedashed_frag:"uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <premultiplied_alpha_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}\n",
-linedashed_vert:"uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\tvLineDistance = scale * lineDistance;\n\tvec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}\n",
-meshbasic_frag:"uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\treflectedLight.indirectDiffuse += texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <premultiplied_alpha_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}\n",
-meshbasic_vert:"#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_ENVMAP\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}\n",
-meshlambert_frag:"uniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\nvarying vec3 vLightFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_pars_maps>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <emissivemap_fragment>\n\treflectedLight.indirectDiffuse = getAmbientLightIrradiance( ambientLightColor );\n\t#include <lightmap_fragment>\n\treflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\n\t#else\n\t\treflectedLight.directDiffuse = vLightFront;\n\t#endif\n\treflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}\n",
-meshlambert_vert:"#define LAMBERT\nvarying vec3 vLightFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_pars_maps>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <lights_lambert_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}\n",
-meshphong_frag:"#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_pars_maps>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}\n",
-meshphong_vert:"#define PHONG\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}\n",
-meshphysical_frag:"#define PHYSICAL\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifndef STANDARD\n\tuniform float clearCoat;\n\tuniform float clearCoatRoughness;\n#endif\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <cube_uv_reflection_fragment>\n#include <lights_pars_begin>\n#include <lights_pars_maps>\n#include <lights_physical_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}\n",
-meshphysical_vert:"#define PHYSICAL\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}\n",
-normal_frag:"#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\nvoid main() {\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n}\n",
-normal_vert:"#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}\n",
-points_frag:"uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <premultiplied_alpha_fragment>\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}\n",
-points_vert:"uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\t#ifdef USE_SIZEATTENUATION\n\t\tgl_PointSize = size * ( scale / - mvPosition.z );\n\t#else\n\t\tgl_PointSize = size;\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}\n",
-shadow_frag:"uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <fog_fragment>\n}\n",shadow_vert:"#include <fog_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}\n"},
-Da={merge:function(a){for(var b={},c=0;c<a.length;c++){var d=this.clone(a[c]),e;for(e in d)b[e]=d[e]}return b},clone:function(a){var b={},c;for(c in a){b[c]={};for(var d in a[c]){var e=a[c][d];e&&(e.isColor||e.isMatrix3||e.isMatrix4||e.isVector2||e.isVector3||e.isVector4||e.isTexture)?b[c][d]=e.clone():Array.isArray(e)?b[c][d]=e.slice():b[c][d]=e}}return b}},Kg={aliceblue:15792383,antiquewhite:16444375,aqua:65535,aquamarine:8388564,azure:15794175,beige:16119260,bisque:16770244,black:0,blanchedalmond:16772045,
-blue:255,blueviolet:9055202,brown:10824234,burlywood:14596231,cadetblue:6266528,chartreuse:8388352,chocolate:13789470,coral:16744272,cornflowerblue:6591981,cornsilk:16775388,crimson:14423100,cyan:65535,darkblue:139,darkcyan:35723,darkgoldenrod:12092939,darkgray:11119017,darkgreen:25600,darkgrey:11119017,darkkhaki:12433259,darkmagenta:9109643,darkolivegreen:5597999,darkorange:16747520,darkorchid:10040012,darkred:9109504,darksalmon:15308410,darkseagreen:9419919,darkslateblue:4734347,darkslategray:3100495,
-darkslategrey:3100495,darkturquoise:52945,darkviolet:9699539,deeppink:16716947,deepskyblue:49151,dimgray:6908265,dimgrey:6908265,dodgerblue:2003199,firebrick:11674146,floralwhite:16775920,forestgreen:2263842,fuchsia:16711935,gainsboro:14474460,ghostwhite:16316671,gold:16766720,goldenrod:14329120,gray:8421504,green:32768,greenyellow:11403055,grey:8421504,honeydew:15794160,hotpink:16738740,indianred:13458524,indigo:4915330,ivory:16777200,khaki:15787660,lavender:15132410,lavenderblush:16773365,lawngreen:8190976,
-lemonchiffon:16775885,lightblue:11393254,lightcoral:15761536,lightcyan:14745599,lightgoldenrodyellow:16448210,lightgray:13882323,lightgreen:9498256,lightgrey:13882323,lightpink:16758465,lightsalmon:16752762,lightseagreen:2142890,lightskyblue:8900346,lightslategray:7833753,lightslategrey:7833753,lightsteelblue:11584734,lightyellow:16777184,lime:65280,limegreen:3329330,linen:16445670,magenta:16711935,maroon:8388608,mediumaquamarine:6737322,mediumblue:205,mediumorchid:12211667,mediumpurple:9662683,mediumseagreen:3978097,
-mediumslateblue:8087790,mediumspringgreen:64154,mediumturquoise:4772300,mediumvioletred:13047173,midnightblue:1644912,mintcream:16121850,mistyrose:16770273,moccasin:16770229,navajowhite:16768685,navy:128,oldlace:16643558,olive:8421376,olivedrab:7048739,orange:16753920,orangered:16729344,orchid:14315734,palegoldenrod:15657130,palegreen:10025880,paleturquoise:11529966,palevioletred:14381203,papayawhip:16773077,peachpuff:16767673,peru:13468991,pink:16761035,plum:14524637,powderblue:11591910,purple:8388736,
-rebeccapurple:6697881,red:16711680,rosybrown:12357519,royalblue:4286945,saddlebrown:9127187,salmon:16416882,sandybrown:16032864,seagreen:3050327,seashell:16774638,sienna:10506797,silver:12632256,skyblue:8900331,slateblue:6970061,slategray:7372944,slategrey:7372944,snow:16775930,springgreen:65407,steelblue:4620980,tan:13808780,teal:32896,thistle:14204888,tomato:16737095,turquoise:4251856,violet:15631086,wheat:16113331,white:16777215,whitesmoke:16119285,yellow:16776960,yellowgreen:10145074};Object.assign(I.prototype,
-{isColor:!0,r:1,g:1,b:1,set:function(a){a&&a.isColor?this.copy(a):"number"===typeof a?this.setHex(a):"string"===typeof a&&this.setStyle(a);return this},setScalar:function(a){this.b=this.g=this.r=a;return this},setHex:function(a){a=Math.floor(a);this.r=(a>>16&255)/255;this.g=(a>>8&255)/255;this.b=(a&255)/255;return this},setRGB:function(a,b,c){this.r=a;this.g=b;this.b=c;return this},setHSL:function(){function a(a,c,d){0>d&&(d+=1);1<d&&--d;return d<1/6?a+6*(c-a)*d:.5>d?c:d<2/3?a+6*(c-a)*(2/3-d):a}return function(b,
-c,d){b=S.euclideanModulo(b,1);c=S.clamp(c,0,1);d=S.clamp(d,0,1);0===c?this.r=this.g=this.b=d:(c=.5>=d?d*(1+c):d+c-d*c,d=2*d-c,this.r=a(d,c,b+1/3),this.g=a(d,c,b),this.b=a(d,c,b-1/3));return this}}(),setStyle:function(a){function b(b){void 0!==b&&1>parseFloat(b)&&console.warn("THREE.Color: Alpha component of "+a+" will be ignored.")}var c;if(c=/^((?:rgb|hsl)a?)\(\s*([^\)]*)\)/.exec(a)){var d=c[2];switch(c[1]){case "rgb":case "rgba":if(c=/^(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec(d))return this.r=
-Math.min(255,parseInt(c[1],10))/255,this.g=Math.min(255,parseInt(c[2],10))/255,this.b=Math.min(255,parseInt(c[3],10))/255,b(c[5]),this;if(c=/^(\d+)%\s*,\s*(\d+)%\s*,\s*(\d+)%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec(d))return this.r=Math.min(100,parseInt(c[1],10))/100,this.g=Math.min(100,parseInt(c[2],10))/100,this.b=Math.min(100,parseInt(c[3],10))/100,b(c[5]),this;break;case "hsl":case "hsla":if(c=/^([0-9]*\.?[0-9]+)\s*,\s*(\d+)%\s*,\s*(\d+)%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec(d)){d=parseFloat(c[1])/
-360;var e=parseInt(c[2],10)/100,f=parseInt(c[3],10)/100;b(c[5]);return this.setHSL(d,e,f)}}}else if(c=/^#([A-Fa-f0-9]+)$/.exec(a)){c=c[1];d=c.length;if(3===d)return this.r=parseInt(c.charAt(0)+c.charAt(0),16)/255,this.g=parseInt(c.charAt(1)+c.charAt(1),16)/255,this.b=parseInt(c.charAt(2)+c.charAt(2),16)/255,this;if(6===d)return this.r=parseInt(c.charAt(0)+c.charAt(1),16)/255,this.g=parseInt(c.charAt(2)+c.charAt(3),16)/255,this.b=parseInt(c.charAt(4)+c.charAt(5),16)/255,this}a&&0<a.length&&(c=Kg[a],
-void 0!==c?this.setHex(c):console.warn("THREE.Color: Unknown color "+a));return this},clone:function(){return new this.constructor(this.r,this.g,this.b)},copy:function(a){this.r=a.r;this.g=a.g;this.b=a.b;return this},copyGammaToLinear:function(a,b){void 0===b&&(b=2);this.r=Math.pow(a.r,b);this.g=Math.pow(a.g,b);this.b=Math.pow(a.b,b);return this},copyLinearToGamma:function(a,b){void 0===b&&(b=2);b=0<b?1/b:1;this.r=Math.pow(a.r,b);this.g=Math.pow(a.g,b);this.b=Math.pow(a.b,b);return this},convertGammaToLinear:function(){var a=
-this.r,b=this.g,c=this.b;this.r=a*a;this.g=b*b;this.b=c*c;return this},convertLinearToGamma:function(){this.r=Math.sqrt(this.r);this.g=Math.sqrt(this.g);this.b=Math.sqrt(this.b);return this},getHex:function(){return 255*this.r<<16^255*this.g<<8^255*this.b<<0},getHexString:function(){return("000000"+this.getHex().toString(16)).slice(-6)},getHSL:function(a){void 0===a&&(console.warn("THREE.Color: .getHSL() target is now required"),a={h:0,s:0,l:0});var b=this.r,c=this.g,d=this.b,e=Math.max(b,c,d),f=
-Math.min(b,c,d),g,h=(f+e)/2;if(f===e)f=g=0;else{var l=e-f;f=.5>=h?l/(e+f):l/(2-e-f);switch(e){case b:g=(c-d)/l+(c<d?6:0);break;case c:g=(d-b)/l+2;break;case d:g=(b-c)/l+4}g/=6}a.h=g;a.s=f;a.l=h;return a},getStyle:function(){return"rgb("+(255*this.r|0)+","+(255*this.g|0)+","+(255*this.b|0)+")"},offsetHSL:function(){var a={};return function(b,c,d){this.getHSL(a);a.h+=b;a.s+=c;a.l+=d;this.setHSL(a.h,a.s,a.l);return this}}(),add:function(a){this.r+=a.r;this.g+=a.g;this.b+=a.b;return this},addColors:function(a,
-b){this.r=a.r+b.r;this.g=a.g+b.g;this.b=a.b+b.b;return this},addScalar:function(a){this.r+=a;this.g+=a;this.b+=a;return this},sub:function(a){this.r=Math.max(0,this.r-a.r);this.g=Math.max(0,this.g-a.g);this.b=Math.max(0,this.b-a.b);return this},multiply:function(a){this.r*=a.r;this.g*=a.g;this.b*=a.b;return this},multiplyScalar:function(a){this.r*=a;this.g*=a;this.b*=a;return this},lerp:function(a,b){this.r+=(a.r-this.r)*b;this.g+=(a.g-this.g)*b;this.b+=(a.b-this.b)*b;return this},equals:function(a){return a.r===
-this.r&&a.g===this.g&&a.b===this.b},fromArray:function(a,b){void 0===b&&(b=0);this.r=a[b];this.g=a[b+1];this.b=a[b+2];return this},toArray:function(a,b){void 0===a&&(a=[]);void 0===b&&(b=0);a[b]=this.r;a[b+1]=this.g;a[b+2]=this.b;return a},toJSON:function(){return this.getHex()}});var L={common:{diffuse:{value:new I(15658734)},opacity:{value:1},map:{value:null},uvTransform:{value:new sa},alphaMap:{value:null}},specularmap:{specularMap:{value:null}},envmap:{envMap:{value:null},flipEnvMap:{value:-1},
-reflectivity:{value:1},refractionRatio:{value:.98},maxMipLevel:{value:0}},aomap:{aoMap:{value:null},aoMapIntensity:{value:1}},lightmap:{lightMap:{value:null},lightMapIntensity:{value:1}},emissivemap:{emissiveMap:{value:null}},bumpmap:{bumpMap:{value:null},bumpScale:{value:1}},normalmap:{normalMap:{value:null},normalScale:{value:new C(1,1)}},displacementmap:{displacementMap:{value:null},displacementScale:{value:1},displacementBias:{value:0}},roughnessmap:{roughnessMap:{value:null}},metalnessmap:{metalnessMap:{value:null}},
-gradientmap:{gradientMap:{value:null}},fog:{fogDensity:{value:2.5E-4},fogNear:{value:1},fogFar:{value:2E3},fogColor:{value:new I(16777215)}},lights:{ambientLightColor:{value:[]},directionalLights:{value:[],properties:{direction:{},color:{},shadow:{},shadowBias:{},shadowRadius:{},shadowMapSize:{}}},directionalShadowMap:{value:[]},directionalShadowMatrix:{value:[]},spotLights:{value:[],properties:{color:{},position:{},direction:{},distance:{},coneCos:{},penumbraCos:{},decay:{},shadow:{},shadowBias:{},
-shadowRadius:{},shadowMapSize:{}}},spotShadowMap:{value:[]},spotShadowMatrix:{value:[]},pointLights:{value:[],properties:{color:{},position:{},decay:{},distance:{},shadow:{},shadowBias:{},shadowRadius:{},shadowMapSize:{},shadowCameraNear:{},shadowCameraFar:{}}},pointShadowMap:{value:[]},pointShadowMatrix:{value:[]},hemisphereLights:{value:[],properties:{direction:{},skyColor:{},groundColor:{}}},rectAreaLights:{value:[],properties:{color:{},position:{},width:{},height:{}}}},points:{diffuse:{value:new I(15658734)},
-opacity:{value:1},size:{value:1},scale:{value:1},map:{value:null},uvTransform:{value:new sa}}},rb={basic:{uniforms:Da.merge([L.common,L.specularmap,L.envmap,L.aomap,L.lightmap,L.fog]),vertexShader:V.meshbasic_vert,fragmentShader:V.meshbasic_frag},lambert:{uniforms:Da.merge([L.common,L.specularmap,L.envmap,L.aomap,L.lightmap,L.emissivemap,L.fog,L.lights,{emissive:{value:new I(0)}}]),vertexShader:V.meshlambert_vert,fragmentShader:V.meshlambert_frag},phong:{uniforms:Da.merge([L.common,L.specularmap,
-L.envmap,L.aomap,L.lightmap,L.emissivemap,L.bumpmap,L.normalmap,L.displacementmap,L.gradientmap,L.fog,L.lights,{emissive:{value:new I(0)},specular:{value:new I(1118481)},shininess:{value:30}}]),vertexShader:V.meshphong_vert,fragmentShader:V.meshphong_frag},standard:{uniforms:Da.merge([L.common,L.envmap,L.aomap,L.lightmap,L.emissivemap,L.bumpmap,L.normalmap,L.displacementmap,L.roughnessmap,L.metalnessmap,L.fog,L.lights,{emissive:{value:new I(0)},roughness:{value:.5},metalness:{value:.5},envMapIntensity:{value:1}}]),
-vertexShader:V.meshphysical_vert,fragmentShader:V.meshphysical_frag},points:{uniforms:Da.merge([L.points,L.fog]),vertexShader:V.points_vert,fragmentShader:V.points_frag},dashed:{uniforms:Da.merge([L.common,L.fog,{scale:{value:1},dashSize:{value:1},totalSize:{value:2}}]),vertexShader:V.linedashed_vert,fragmentShader:V.linedashed_frag},depth:{uniforms:Da.merge([L.common,L.displacementmap]),vertexShader:V.depth_vert,fragmentShader:V.depth_frag},normal:{uniforms:Da.merge([L.common,L.bumpmap,L.normalmap,
-L.displacementmap,{opacity:{value:1}}]),vertexShader:V.normal_vert,fragmentShader:V.normal_frag},cube:{uniforms:{tCube:{value:null},tFlip:{value:-1},opacity:{value:1}},vertexShader:V.cube_vert,fragmentShader:V.cube_frag},equirect:{uniforms:{tEquirect:{value:null}},vertexShader:V.equirect_vert,fragmentShader:V.equirect_frag},distanceRGBA:{uniforms:Da.merge([L.common,L.displacementmap,{referencePosition:{value:new p},nearDistance:{value:1},farDistance:{value:1E3}}]),vertexShader:V.distanceRGBA_vert,
-fragmentShader:V.distanceRGBA_frag},shadow:{uniforms:Da.merge([L.lights,L.fog,{color:{value:new I(0)},opacity:{value:1}}]),vertexShader:V.shadow_vert,fragmentShader:V.shadow_frag}};rb.physical={uniforms:Da.merge([rb.standard.uniforms,{clearCoat:{value:0},clearCoatRoughness:{value:0}}]),vertexShader:V.meshphysical_vert,fragmentShader:V.meshphysical_frag};jb.RotationOrders="XYZ YZX ZXY XZY YXZ ZYX".split(" ");jb.DefaultOrder="XYZ";Object.defineProperties(jb.prototype,{x:{get:function(){return this._x},
-set:function(a){this._x=a;this.onChangeCallback()}},y:{get:function(){return this._y},set:function(a){this._y=a;this.onChangeCallback()}},z:{get:function(){return this._z},set:function(a){this._z=a;this.onChangeCallback()}},order:{get:function(){return this._order},set:function(a){this._order=a;this.onChangeCallback()}}});Object.assign(jb.prototype,{isEuler:!0,set:function(a,b,c,d){this._x=a;this._y=b;this._z=c;this._order=d||this._order;this.onChangeCallback();return this},clone:function(){return new this.constructor(this._x,
-this._y,this._z,this._order)},copy:function(a){this._x=a._x;this._y=a._y;this._z=a._z;this._order=a._order;this.onChangeCallback();return this},setFromRotationMatrix:function(a,b,c){var d=S.clamp,e=a.elements;a=e[0];var f=e[4],g=e[8],h=e[1],l=e[5],m=e[9],k=e[2],n=e[6];e=e[10];b=b||this._order;"XYZ"===b?(this._y=Math.asin(d(g,-1,1)),.99999>Math.abs(g)?(this._x=Math.atan2(-m,e),this._z=Math.atan2(-f,a)):(this._x=Math.atan2(n,l),this._z=0)):"YXZ"===b?(this._x=Math.asin(-d(m,-1,1)),.99999>Math.abs(m)?
-(this._y=Math.atan2(g,e),this._z=Math.atan2(h,l)):(this._y=Math.atan2(-k,a),this._z=0)):"ZXY"===b?(this._x=Math.asin(d(n,-1,1)),.99999>Math.abs(n)?(this._y=Math.atan2(-k,e),this._z=Math.atan2(-f,l)):(this._y=0,this._z=Math.atan2(h,a))):"ZYX"===b?(this._y=Math.asin(-d(k,-1,1)),.99999>Math.abs(k)?(this._x=Math.atan2(n,e),this._z=Math.atan2(h,a)):(this._x=0,this._z=Math.atan2(-f,l))):"YZX"===b?(this._z=Math.asin(d(h,-1,1)),.99999>Math.abs(h)?(this._x=Math.atan2(-m,l),this._y=Math.atan2(-k,a)):(this._x=
-0,this._y=Math.atan2(g,e))):"XZY"===b?(this._z=Math.asin(-d(f,-1,1)),.99999>Math.abs(f)?(this._x=Math.atan2(n,l),this._y=Math.atan2(g,a)):(this._x=Math.atan2(-m,e),this._y=0)):console.warn("THREE.Euler: .setFromRotationMatrix() given unsupported order: "+b);this._order=b;if(!1!==c)this.onChangeCallback();return this},setFromQuaternion:function(){var a=new M;return function(b,c,d){a.makeRotationFromQuaternion(b);return this.setFromRotationMatrix(a,c,d)}}(),setFromVector3:function(a,b){return this.set(a.x,
-a.y,a.z,b||this._order)},reorder:function(){var a=new ja;return function(b){a.setFromEuler(this);return this.setFromQuaternion(a,b)}}(),equals:function(a){return a._x===this._x&&a._y===this._y&&a._z===this._z&&a._order===this._order},fromArray:function(a){this._x=a[0];this._y=a[1];this._z=a[2];void 0!==a[3]&&(this._order=a[3]);this.onChangeCallback();return this},toArray:function(a,b){void 0===a&&(a=[]);void 0===b&&(b=0);a[b]=this._x;a[b+1]=this._y;a[b+2]=this._z;a[b+3]=this._order;return a},toVector3:function(a){return a?
-a.set(this._x,this._y,this._z):new p(this._x,this._y,this._z)},onChange:function(a){this.onChangeCallback=a;return this},onChangeCallback:function(){}});Object.assign(Sd.prototype,{set:function(a){this.mask=1<<a|0},enable:function(a){this.mask=this.mask|1<<a|0},toggle:function(a){this.mask^=1<<a|0},disable:function(a){this.mask&=~(1<<a|0)},test:function(a){return 0!==(this.mask&a.mask)}});var zf=0;A.DefaultUp=new p(0,1,0);A.DefaultMatrixAutoUpdate=!0;A.prototype=Object.assign(Object.create(xa.prototype),
-{constructor:A,isObject3D:!0,onBeforeRender:function(){},onAfterRender:function(){},applyMatrix:function(a){this.matrix.multiplyMatrices(a,this.matrix);this.matrix.decompose(this.position,this.quaternion,this.scale)},applyQuaternion:function(a){this.quaternion.premultiply(a);return this},setRotationFromAxisAngle:function(a,b){this.quaternion.setFromAxisAngle(a,b)},setRotationFromEuler:function(a){this.quaternion.setFromEuler(a,!0)},setRotationFromMatrix:function(a){this.quaternion.setFromRotationMatrix(a)},
-setRotationFromQuaternion:function(a){this.quaternion.copy(a)},rotateOnAxis:function(){var a=new ja;return function(b,c){a.setFromAxisAngle(b,c);this.quaternion.multiply(a);return this}}(),rotateOnWorldAxis:function(){var a=new ja;return function(b,c){a.setFromAxisAngle(b,c);this.quaternion.premultiply(a);return this}}(),rotateX:function(){var a=new p(1,0,0);return function(b){return this.rotateOnAxis(a,b)}}(),rotateY:function(){var a=new p(0,1,0);return function(b){return this.rotateOnAxis(a,b)}}(),
-rotateZ:function(){var a=new p(0,0,1);return function(b){return this.rotateOnAxis(a,b)}}(),translateOnAxis:function(){var a=new p;return function(b,c){a.copy(b).applyQuaternion(this.quaternion);this.position.add(a.multiplyScalar(c));return this}}(),translateX:function(){var a=new p(1,0,0);return function(b){return this.translateOnAxis(a,b)}}(),translateY:function(){var a=new p(0,1,0);return function(b){return this.translateOnAxis(a,b)}}(),translateZ:function(){var a=new p(0,0,1);return function(b){return this.translateOnAxis(a,
-b)}}(),localToWorld:function(a){return a.applyMatrix4(this.matrixWorld)},worldToLocal:function(){var a=new M;return function(b){return b.applyMatrix4(a.getInverse(this.matrixWorld))}}(),lookAt:function(){var a=new M,b=new p;return function(c,d,e){c.isVector3?b.copy(c):b.set(c,d,e);this.isCamera?a.lookAt(this.position,b,this.up):a.lookAt(b,this.position,this.up);this.quaternion.setFromRotationMatrix(a)}}(),add:function(a){if(1<arguments.length){for(var b=0;b<arguments.length;b++)this.add(arguments[b]);
-return this}if(a===this)return console.error("THREE.Object3D.add: object can't be added as a child of itself.",a),this;a&&a.isObject3D?(null!==a.parent&&a.parent.remove(a),a.parent=this,a.dispatchEvent({type:"added"}),this.children.push(a)):console.error("THREE.Object3D.add: object not an instance of THREE.Object3D.",a);return this},remove:function(a){if(1<arguments.length){for(var b=0;b<arguments.length;b++)this.remove(arguments[b]);return this}b=this.children.indexOf(a);-1!==b&&(a.parent=null,a.dispatchEvent({type:"removed"}),
-this.children.splice(b,1));return this},getObjectById:function(a){return this.getObjectByProperty("id",a)},getObjectByName:function(a){return this.getObjectByProperty("name",a)},getObjectByProperty:function(a,b){if(this[a]===b)return this;for(var c=0,d=this.children.length;c<d;c++){var e=this.children[c].getObjectByProperty(a,b);if(void 0!==e)return e}},getWorldPosition:function(a){void 0===a&&(console.warn("THREE.Object3D: .getWorldPosition() target is now required"),a=new p);this.updateMatrixWorld(!0);
-return a.setFromMatrixPosition(this.matrixWorld)},getWorldQuaternion:function(){var a=new p,b=new p;return function(c){void 0===c&&(console.warn("THREE.Object3D: .getWorldQuaternion() target is now required"),c=new ja);this.updateMatrixWorld(!0);this.matrixWorld.decompose(a,c,b);return c}}(),getWorldScale:function(){var a=new p,b=new ja;return function(c){void 0===c&&(console.warn("THREE.Object3D: .getWorldScale() target is now required"),c=new p);this.updateMatrixWorld(!0);this.matrixWorld.decompose(a,
-b,c);return c}}(),getWorldDirection:function(){var a=new ja;return function(b){void 0===b&&(console.warn("THREE.Object3D: .getWorldDirection() target is now required"),b=new p);this.getWorldQuaternion(a);return b.set(0,0,1).applyQuaternion(a)}}(),raycast:function(){},traverse:function(a){a(this);for(var b=this.children,c=0,d=b.length;c<d;c++)b[c].traverse(a)},traverseVisible:function(a){if(!1!==this.visible){a(this);for(var b=this.children,c=0,d=b.length;c<d;c++)b[c].traverseVisible(a)}},traverseAncestors:function(a){var b=
-this.parent;null!==b&&(a(b),b.traverseAncestors(a))},updateMatrix:function(){this.matrix.compose(this.position,this.quaternion,this.scale);this.matrixWorldNeedsUpdate=!0},updateMatrixWorld:function(a){this.matrixAutoUpdate&&this.updateMatrix();if(this.matrixWorldNeedsUpdate||a)null===this.parent?this.matrixWorld.copy(this.matrix):this.matrixWorld.multiplyMatrices(this.parent.matrixWorld,this.matrix),this.matrixWorldNeedsUpdate=!1,a=!0;for(var b=this.children,c=0,d=b.length;c<d;c++)b[c].updateMatrixWorld(a)},
-toJSON:function(a){function b(b,c){void 0===b[c.uuid]&&(b[c.uuid]=c.toJSON(a));return c.uuid}function c(a){var b=[],c;for(c in a){var d=a[c];delete d.metadata;b.push(d)}return b}var d=void 0===a||"string"===typeof a,e={};d&&(a={geometries:{},materials:{},textures:{},images:{},shapes:{}},e.metadata={version:4.5,type:"Object",generator:"Object3D.toJSON"});var f={};f.uuid=this.uuid;f.type=this.type;""!==this.name&&(f.name=this.name);!0===this.castShadow&&(f.castShadow=!0);!0===this.receiveShadow&&(f.receiveShadow=
-!0);!1===this.visible&&(f.visible=!1);!1===this.frustumCulled&&(f.frustumCulled=!1);0!==this.renderOrder&&(f.renderOrder=this.renderOrder);"{}"!==JSON.stringify(this.userData)&&(f.userData=this.userData);f.matrix=this.matrix.toArray();if(void 0!==this.geometry){f.geometry=b(a.geometries,this.geometry);var g=this.geometry.parameters;if(void 0!==g&&void 0!==g.shapes)if(g=g.shapes,Array.isArray(g))for(var h=0,l=g.length;h<l;h++)b(a.shapes,g[h]);else b(a.shapes,g)}if(void 0!==this.material)if(Array.isArray(this.material)){g=
-[];h=0;for(l=this.material.length;h<l;h++)g.push(b(a.materials,this.material[h]));f.material=g}else f.material=b(a.materials,this.material);if(0<this.children.length)for(f.children=[],h=0;h<this.children.length;h++)f.children.push(this.children[h].toJSON(a).object);if(d){d=c(a.geometries);h=c(a.materials);l=c(a.textures);var m=c(a.images);g=c(a.shapes);0<d.length&&(e.geometries=d);0<h.length&&(e.materials=h);0<l.length&&(e.textures=l);0<m.length&&(e.images=m);0<g.length&&(e.shapes=g)}e.object=f;return e},
-clone:function(a){return(new this.constructor).copy(this,a)},copy:function(a,b){void 0===b&&(b=!0);this.name=a.name;this.up.copy(a.up);this.position.copy(a.position);this.quaternion.copy(a.quaternion);this.scale.copy(a.scale);this.matrix.copy(a.matrix);this.matrixWorld.copy(a.matrixWorld);this.matrixAutoUpdate=a.matrixAutoUpdate;this.matrixWorldNeedsUpdate=a.matrixWorldNeedsUpdate;this.layers.mask=a.layers.mask;this.visible=a.visible;this.castShadow=a.castShadow;this.receiveShadow=a.receiveShadow;
-this.frustumCulled=a.frustumCulled;this.renderOrder=a.renderOrder;this.userData=JSON.parse(JSON.stringify(a.userData));if(!0===b)for(b=0;b<a.children.length;b++)this.add(a.children[b].clone());return this}});Qa.prototype=Object.assign(Object.create(A.prototype),{constructor:Qa,isCamera:!0,copy:function(a,b){A.prototype.copy.call(this,a,b);this.matrixWorldInverse.copy(a.matrixWorldInverse);this.projectionMatrix.copy(a.projectionMatrix);return this},getWorldDirection:function(){var a=new ja;return function(b){void 0===
-b&&(console.warn("THREE.Camera: .getWorldDirection() target is now required"),b=new p);this.getWorldQuaternion(a);return b.set(0,0,-1).applyQuaternion(a)}}(),updateMatrixWorld:function(a){A.prototype.updateMatrixWorld.call(this,a);this.matrixWorldInverse.getInverse(this.matrixWorld)},clone:function(){return(new this.constructor).copy(this)}});Jb.prototype=Object.assign(Object.create(Qa.prototype),{constructor:Jb,isOrthographicCamera:!0,copy:function(a,b){Qa.prototype.copy.call(this,a,b);this.left=
-a.left;this.right=a.right;this.top=a.top;this.bottom=a.bottom;this.near=a.near;this.far=a.far;this.zoom=a.zoom;this.view=null===a.view?null:Object.assign({},a.view);return this},setViewOffset:function(a,b,c,d,e,f){null===this.view&&(this.view={enabled:!0,fullWidth:1,fullHeight:1,offsetX:0,offsetY:0,width:1,height:1});this.view.enabled=!0;this.view.fullWidth=a;this.view.fullHeight=b;this.view.offsetX=c;this.view.offsetY=d;this.view.width=e;this.view.height=f;this.updateProjectionMatrix()},clearViewOffset:function(){null!==
-this.view&&(this.view.enabled=!1);this.updateProjectionMatrix()},updateProjectionMatrix:function(){var a=(this.right-this.left)/(2*this.zoom),b=(this.top-this.bottom)/(2*this.zoom),c=(this.right+this.left)/2,d=(this.top+this.bottom)/2,e=c-a;c+=a;a=d+b;b=d-b;if(null!==this.view&&this.view.enabled){c=this.zoom/(this.view.width/this.view.fullWidth);b=this.zoom/(this.view.height/this.view.fullHeight);var f=(this.right-this.left)/this.view.width;d=(this.top-this.bottom)/this.view.height;e+=this.view.offsetX/
-c*f;c=e+this.view.width/c*f;a-=this.view.offsetY/b*d;b=a-this.view.height/b*d}this.projectionMatrix.makeOrthographic(e,c,a,b,this.near,this.far)},toJSON:function(a){a=A.prototype.toJSON.call(this,a);a.object.zoom=this.zoom;a.object.left=this.left;a.object.right=this.right;a.object.top=this.top;a.object.bottom=this.bottom;a.object.near=this.near;a.object.far=this.far;null!==this.view&&(a.object.view=Object.assign({},this.view));return a}});Object.assign(Wa.prototype,{clone:function(){return(new this.constructor).copy(this)},
-copy:function(a){this.a=a.a;this.b=a.b;this.c=a.c;this.normal.copy(a.normal);this.color.copy(a.color);this.materialIndex=a.materialIndex;for(var b=0,c=a.vertexNormals.length;b<c;b++)this.vertexNormals[b]=a.vertexNormals[b].clone();b=0;for(c=a.vertexColors.length;b<c;b++)this.vertexColors[b]=a.vertexColors[b].clone();return this}});var Af=0;N.prototype=Object.assign(Object.create(xa.prototype),{constructor:N,isGeometry:!0,applyMatrix:function(a){for(var b=(new sa).getNormalMatrix(a),c=0,d=this.vertices.length;c<
-d;c++)this.vertices[c].applyMatrix4(a);c=0;for(d=this.faces.length;c<d;c++){a=this.faces[c];a.normal.applyMatrix3(b).normalize();for(var e=0,f=a.vertexNormals.length;e<f;e++)a.vertexNormals[e].applyMatrix3(b).normalize()}null!==this.boundingBox&&this.computeBoundingBox();null!==this.boundingSphere&&this.computeBoundingSphere();this.normalsNeedUpdate=this.verticesNeedUpdate=!0;return this},rotateX:function(){var a=new M;return function(b){a.makeRotationX(b);this.applyMatrix(a);return this}}(),rotateY:function(){var a=
-new M;return function(b){a.makeRotationY(b);this.applyMatrix(a);return this}}(),rotateZ:function(){var a=new M;return function(b){a.makeRotationZ(b);this.applyMatrix(a);return this}}(),translate:function(){var a=new M;return function(b,c,d){a.makeTranslation(b,c,d);this.applyMatrix(a);return this}}(),scale:function(){var a=new M;return function(b,c,d){a.makeScale(b,c,d);this.applyMatrix(a);return this}}(),lookAt:function(){var a=new A;return function(b){a.lookAt(b);a.updateMatrix();this.applyMatrix(a.matrix)}}(),
-fromBufferGeometry:function(a){function b(a,b,d,e){var f=void 0!==g?[k[a].clone(),k[b].clone(),k[d].clone()]:[],p=void 0!==h?[c.colors[a].clone(),c.colors[b].clone(),c.colors[d].clone()]:[];e=new Wa(a,b,d,f,p,e);c.faces.push(e);void 0!==l&&c.faceVertexUvs[0].push([n[a].clone(),n[b].clone(),n[d].clone()]);void 0!==m&&c.faceVertexUvs[1].push([t[a].clone(),t[b].clone(),t[d].clone()])}var c=this,d=null!==a.index?a.index.array:void 0,e=a.attributes,f=e.position.array,g=void 0!==e.normal?e.normal.array:
-void 0,h=void 0!==e.color?e.color.array:void 0,l=void 0!==e.uv?e.uv.array:void 0,m=void 0!==e.uv2?e.uv2.array:void 0;void 0!==m&&(this.faceVertexUvs[1]=[]);for(var k=[],n=[],t=[],r=e=0;e<f.length;e+=3,r+=2)c.vertices.push(new p(f[e],f[e+1],f[e+2])),void 0!==g&&k.push(new p(g[e],g[e+1],g[e+2])),void 0!==h&&c.colors.push(new I(h[e],h[e+1],h[e+2])),void 0!==l&&n.push(new C(l[r],l[r+1])),void 0!==m&&t.push(new C(m[r],m[r+1]));var q=a.groups;if(0<q.length)for(e=0;e<q.length;e++){f=q[e];var v=f.start,x=
-f.count;r=v;for(v+=x;r<v;r+=3)void 0!==d?b(d[r],d[r+1],d[r+2],f.materialIndex):b(r,r+1,r+2,f.materialIndex)}else if(void 0!==d)for(e=0;e<d.length;e+=3)b(d[e],d[e+1],d[e+2]);else for(e=0;e<f.length/3;e+=3)b(e,e+1,e+2);this.computeFaceNormals();null!==a.boundingBox&&(this.boundingBox=a.boundingBox.clone());null!==a.boundingSphere&&(this.boundingSphere=a.boundingSphere.clone());return this},center:function(){var a=new p;return function(){this.computeBoundingBox();this.boundingBox.getCenter(a).negate();
-this.translate(a.x,a.y,a.z);return this}}(),normalize:function(){this.computeBoundingSphere();var a=this.boundingSphere.center,b=this.boundingSphere.radius;b=0===b?1:1/b;var c=new M;c.set(b,0,0,-b*a.x,0,b,0,-b*a.y,0,0,b,-b*a.z,0,0,0,1);this.applyMatrix(c);return this},computeFaceNormals:function(){for(var a=new p,b=new p,c=0,d=this.faces.length;c<d;c++){var e=this.faces[c],f=this.vertices[e.a],g=this.vertices[e.b];a.subVectors(this.vertices[e.c],g);b.subVectors(f,g);a.cross(b);a.normalize();e.normal.copy(a)}},
-computeVertexNormals:function(a){void 0===a&&(a=!0);var b;var c=Array(this.vertices.length);var d=0;for(b=this.vertices.length;d<b;d++)c[d]=new p;if(a){var e=new p,f=new p;a=0;for(d=this.faces.length;a<d;a++){b=this.faces[a];var g=this.vertices[b.a];var h=this.vertices[b.b];var l=this.vertices[b.c];e.subVectors(l,h);f.subVectors(g,h);e.cross(f);c[b.a].add(e);c[b.b].add(e);c[b.c].add(e)}}else for(this.computeFaceNormals(),a=0,d=this.faces.length;a<d;a++)b=this.faces[a],c[b.a].add(b.normal),c[b.b].add(b.normal),
-c[b.c].add(b.normal);d=0;for(b=this.vertices.length;d<b;d++)c[d].normalize();a=0;for(d=this.faces.length;a<d;a++)b=this.faces[a],g=b.vertexNormals,3===g.length?(g[0].copy(c[b.a]),g[1].copy(c[b.b]),g[2].copy(c[b.c])):(g[0]=c[b.a].clone(),g[1]=c[b.b].clone(),g[2]=c[b.c].clone());0<this.faces.length&&(this.normalsNeedUpdate=!0)},computeFlatVertexNormals:function(){var a;this.computeFaceNormals();var b=0;for(a=this.faces.length;b<a;b++){var c=this.faces[b];var d=c.vertexNormals;3===d.length?(d[0].copy(c.normal),
-d[1].copy(c.normal),d[2].copy(c.normal)):(d[0]=c.normal.clone(),d[1]=c.normal.clone(),d[2]=c.normal.clone())}0<this.faces.length&&(this.normalsNeedUpdate=!0)},computeMorphNormals:function(){var a,b;var c=0;for(b=this.faces.length;c<b;c++){var d=this.faces[c];d.__originalFaceNormal?d.__originalFaceNormal.copy(d.normal):d.__originalFaceNormal=d.normal.clone();d.__originalVertexNormals||(d.__originalVertexNormals=[]);var e=0;for(a=d.vertexNormals.length;e<a;e++)d.__originalVertexNormals[e]?d.__originalVertexNormals[e].copy(d.vertexNormals[e]):
-d.__originalVertexNormals[e]=d.vertexNormals[e].clone()}var f=new N;f.faces=this.faces;e=0;for(a=this.morphTargets.length;e<a;e++){if(!this.morphNormals[e]){this.morphNormals[e]={};this.morphNormals[e].faceNormals=[];this.morphNormals[e].vertexNormals=[];d=this.morphNormals[e].faceNormals;var g=this.morphNormals[e].vertexNormals;c=0;for(b=this.faces.length;c<b;c++){var h=new p;var l={a:new p,b:new p,c:new p};d.push(h);g.push(l)}}g=this.morphNormals[e];f.vertices=this.morphTargets[e].vertices;f.computeFaceNormals();
-f.computeVertexNormals();c=0;for(b=this.faces.length;c<b;c++)d=this.faces[c],h=g.faceNormals[c],l=g.vertexNormals[c],h.copy(d.normal),l.a.copy(d.vertexNormals[0]),l.b.copy(d.vertexNormals[1]),l.c.copy(d.vertexNormals[2])}c=0;for(b=this.faces.length;c<b;c++)d=this.faces[c],d.normal=d.__originalFaceNormal,d.vertexNormals=d.__originalVertexNormals},computeBoundingBox:function(){null===this.boundingBox&&(this.boundingBox=new Va);this.boundingBox.setFromPoints(this.vertices)},computeBoundingSphere:function(){null===
-this.boundingSphere&&(this.boundingSphere=new Ea);this.boundingSphere.setFromPoints(this.vertices)},merge:function(a,b,c){if(a&&a.isGeometry){var d,e=this.vertices.length,f=this.vertices,g=a.vertices,h=this.faces,l=a.faces,m=this.faceVertexUvs[0],k=a.faceVertexUvs[0],n=this.colors,p=a.colors;void 0===c&&(c=0);void 0!==b&&(d=(new sa).getNormalMatrix(b));a=0;for(var r=g.length;a<r;a++){var q=g[a].clone();void 0!==b&&q.applyMatrix4(b);f.push(q)}a=0;for(r=p.length;a<r;a++)n.push(p[a].clone());a=0;for(r=
-l.length;a<r;a++){g=l[a];var v=g.vertexNormals;p=g.vertexColors;n=new Wa(g.a+e,g.b+e,g.c+e);n.normal.copy(g.normal);void 0!==d&&n.normal.applyMatrix3(d).normalize();b=0;for(f=v.length;b<f;b++)q=v[b].clone(),void 0!==d&&q.applyMatrix3(d).normalize(),n.vertexNormals.push(q);n.color.copy(g.color);b=0;for(f=p.length;b<f;b++)q=p[b],n.vertexColors.push(q.clone());n.materialIndex=g.materialIndex+c;h.push(n)}a=0;for(r=k.length;a<r;a++)if(c=k[a],d=[],void 0!==c){b=0;for(f=c.length;b<f;b++)d.push(c[b].clone());
-m.push(d)}}else console.error("THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.",a)},mergeMesh:function(a){a&&a.isMesh?(a.matrixAutoUpdate&&a.updateMatrix(),this.merge(a.geometry,a.matrix)):console.error("THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.",a)},mergeVertices:function(){var a={},b=[],c=[],d=Math.pow(10,4),e;var f=0;for(e=this.vertices.length;f<e;f++){var g=this.vertices[f];g=Math.round(g.x*d)+"_"+Math.round(g.y*d)+"_"+Math.round(g.z*d);void 0===a[g]?
-(a[g]=f,b.push(this.vertices[f]),c[f]=b.length-1):c[f]=c[a[g]]}a=[];f=0;for(e=this.faces.length;f<e;f++)for(d=this.faces[f],d.a=c[d.a],d.b=c[d.b],d.c=c[d.c],d=[d.a,d.b,d.c],g=0;3>g;g++)if(d[g]===d[(g+1)%3]){a.push(f);break}for(f=a.length-1;0<=f;f--)for(d=a[f],this.faces.splice(d,1),c=0,e=this.faceVertexUvs.length;c<e;c++)this.faceVertexUvs[c].splice(d,1);f=this.vertices.length-b.length;this.vertices=b;return f},setFromPoints:function(a){this.vertices=[];for(var b=0,c=a.length;b<c;b++){var d=a[b];
-this.vertices.push(new p(d.x,d.y,d.z||0))}return this},sortFacesByMaterialIndex:function(){for(var a=this.faces,b=a.length,c=0;c<b;c++)a[c]._id=c;a.sort(function(a,b){return a.materialIndex-b.materialIndex});var d=this.faceVertexUvs[0],e=this.faceVertexUvs[1],f,g;d&&d.length===b&&(f=[]);e&&e.length===b&&(g=[]);for(c=0;c<b;c++){var h=a[c]._id;f&&f.push(d[h]);g&&g.push(e[h])}f&&(this.faceVertexUvs[0]=f);g&&(this.faceVertexUvs[1]=g)},toJSON:function(){function a(a,b,c){return c?a|1<<b:a&~(1<<b)}function b(a){var b=
-a.x.toString()+a.y.toString()+a.z.toString();if(void 0!==m[b])return m[b];m[b]=l.length/3;l.push(a.x,a.y,a.z);return m[b]}function c(a){var b=a.r.toString()+a.g.toString()+a.b.toString();if(void 0!==n[b])return n[b];n[b]=k.length;k.push(a.getHex());return n[b]}function d(a){var b=a.x.toString()+a.y.toString();if(void 0!==r[b])return r[b];r[b]=p.length/2;p.push(a.x,a.y);return r[b]}var e={metadata:{version:4.5,type:"Geometry",generator:"Geometry.toJSON"}};e.uuid=this.uuid;e.type=this.type;""!==this.name&&
-(e.name=this.name);if(void 0!==this.parameters){var f=this.parameters,g;for(g in f)void 0!==f[g]&&(e[g]=f[g]);return e}f=[];for(g=0;g<this.vertices.length;g++){var h=this.vertices[g];f.push(h.x,h.y,h.z)}h=[];var l=[],m={},k=[],n={},p=[],r={};for(g=0;g<this.faces.length;g++){var q=this.faces[g],v=void 0!==this.faceVertexUvs[0][g],x=0<q.normal.length(),y=0<q.vertexNormals.length,w=1!==q.color.r||1!==q.color.g||1!==q.color.b,B=0<q.vertexColors.length,G=0;G=a(G,0,0);G=a(G,1,!0);G=a(G,2,!1);G=a(G,3,v);
-G=a(G,4,x);G=a(G,5,y);G=a(G,6,w);G=a(G,7,B);h.push(G);h.push(q.a,q.b,q.c);h.push(q.materialIndex);v&&(v=this.faceVertexUvs[0][g],h.push(d(v[0]),d(v[1]),d(v[2])));x&&h.push(b(q.normal));y&&(x=q.vertexNormals,h.push(b(x[0]),b(x[1]),b(x[2])));w&&h.push(c(q.color));B&&(q=q.vertexColors,h.push(c(q[0]),c(q[1]),c(q[2])))}e.data={};e.data.vertices=f;e.data.normals=l;0<k.length&&(e.data.colors=k);0<p.length&&(e.data.uvs=[p]);e.data.faces=h;return e},clone:function(){return(new N).copy(this)},copy:function(a){var b,
-c,d;this.vertices=[];this.colors=[];this.faces=[];this.faceVertexUvs=[[]];this.morphTargets=[];this.morphNormals=[];this.skinWeights=[];this.skinIndices=[];this.lineDistances=[];this.boundingSphere=this.boundingBox=null;this.name=a.name;var e=a.vertices;var f=0;for(b=e.length;f<b;f++)this.vertices.push(e[f].clone());e=a.colors;f=0;for(b=e.length;f<b;f++)this.colors.push(e[f].clone());e=a.faces;f=0;for(b=e.length;f<b;f++)this.faces.push(e[f].clone());f=0;for(b=a.faceVertexUvs.length;f<b;f++){var g=
-a.faceVertexUvs[f];void 0===this.faceVertexUvs[f]&&(this.faceVertexUvs[f]=[]);e=0;for(c=g.length;e<c;e++){var h=g[e],l=[];var m=0;for(d=h.length;m<d;m++)l.push(h[m].clone());this.faceVertexUvs[f].push(l)}}m=a.morphTargets;f=0;for(b=m.length;f<b;f++){d={};d.name=m[f].name;if(void 0!==m[f].vertices)for(d.vertices=[],e=0,c=m[f].vertices.length;e<c;e++)d.vertices.push(m[f].vertices[e].clone());if(void 0!==m[f].normals)for(d.normals=[],e=0,c=m[f].normals.length;e<c;e++)d.normals.push(m[f].normals[e].clone());
-this.morphTargets.push(d)}m=a.morphNormals;f=0;for(b=m.length;f<b;f++){d={};if(void 0!==m[f].vertexNormals)for(d.vertexNormals=[],e=0,c=m[f].vertexNormals.length;e<c;e++)g=m[f].vertexNormals[e],h={},h.a=g.a.clone(),h.b=g.b.clone(),h.c=g.c.clone(),d.vertexNormals.push(h);if(void 0!==m[f].faceNormals)for(d.faceNormals=[],e=0,c=m[f].faceNormals.length;e<c;e++)d.faceNormals.push(m[f].faceNormals[e].clone());this.morphNormals.push(d)}e=a.skinWeights;f=0;for(b=e.length;f<b;f++)this.skinWeights.push(e[f].clone());
-e=a.skinIndices;f=0;for(b=e.length;f<b;f++)this.skinIndices.push(e[f].clone());e=a.lineDistances;f=0;for(b=e.length;f<b;f++)this.lineDistances.push(e[f]);f=a.boundingBox;null!==f&&(this.boundingBox=f.clone());f=a.boundingSphere;null!==f&&(this.boundingSphere=f.clone());this.elementsNeedUpdate=a.elementsNeedUpdate;this.verticesNeedUpdate=a.verticesNeedUpdate;this.uvsNeedUpdate=a.uvsNeedUpdate;this.normalsNeedUpdate=a.normalsNeedUpdate;this.colorsNeedUpdate=a.colorsNeedUpdate;this.lineDistancesNeedUpdate=
-a.lineDistancesNeedUpdate;this.groupsNeedUpdate=a.groupsNeedUpdate;return this},dispose:function(){this.dispatchEvent({type:"dispose"})}});Object.defineProperty(T.prototype,"needsUpdate",{set:function(a){!0===a&&this.version++}});Object.assign(T.prototype,{isBufferAttribute:!0,onUploadCallback:function(){},setArray:function(a){if(Array.isArray(a))throw new TypeError("THREE.BufferAttribute: array should be a Typed Array.");this.count=void 0!==a?a.length/this.itemSize:0;this.array=a},setDynamic:function(a){this.dynamic=
-a;return this},copy:function(a){this.array=new a.array.constructor(a.array);this.itemSize=a.itemSize;this.count=a.count;this.normalized=a.normalized;this.dynamic=a.dynamic;return this},copyAt:function(a,b,c){a*=this.itemSize;c*=b.itemSize;for(var d=0,e=this.itemSize;d<e;d++)this.array[a+d]=b.array[c+d];return this},copyArray:function(a){this.array.set(a);return this},copyColorsArray:function(a){for(var b=this.array,c=0,d=0,e=a.length;d<e;d++){var f=a[d];void 0===f&&(console.warn("THREE.BufferAttribute.copyColorsArray(): color is undefined",
-d),f=new I);b[c++]=f.r;b[c++]=f.g;b[c++]=f.b}return this},copyVector2sArray:function(a){for(var b=this.array,c=0,d=0,e=a.length;d<e;d++){var f=a[d];void 0===f&&(console.warn("THREE.BufferAttribute.copyVector2sArray(): vector is undefined",d),f=new C);b[c++]=f.x;b[c++]=f.y}return this},copyVector3sArray:function(a){for(var b=this.array,c=0,d=0,e=a.length;d<e;d++){var f=a[d];void 0===f&&(console.warn("THREE.BufferAttribute.copyVector3sArray(): vector is undefined",d),f=new p);b[c++]=f.x;b[c++]=f.y;
-b[c++]=f.z}return this},copyVector4sArray:function(a){for(var b=this.array,c=0,d=0,e=a.length;d<e;d++){var f=a[d];void 0===f&&(console.warn("THREE.BufferAttribute.copyVector4sArray(): vector is undefined",d),f=new ea);b[c++]=f.x;b[c++]=f.y;b[c++]=f.z;b[c++]=f.w}return this},set:function(a,b){void 0===b&&(b=0);this.array.set(a,b);return this},getX:function(a){return this.array[a*this.itemSize]},setX:function(a,b){this.array[a*this.itemSize]=b;return this},getY:function(a){return this.array[a*this.itemSize+
-1]},setY:function(a,b){this.array[a*this.itemSize+1]=b;return this},getZ:function(a){return this.array[a*this.itemSize+2]},setZ:function(a,b){this.array[a*this.itemSize+2]=b;return this},getW:function(a){return this.array[a*this.itemSize+3]},setW:function(a,b){this.array[a*this.itemSize+3]=b;return this},setXY:function(a,b,c){a*=this.itemSize;this.array[a+0]=b;this.array[a+1]=c;return this},setXYZ:function(a,b,c,d){a*=this.itemSize;this.array[a+0]=b;this.array[a+1]=c;this.array[a+2]=d;return this},
-setXYZW:function(a,b,c,d,e){a*=this.itemSize;this.array[a+0]=b;this.array[a+1]=c;this.array[a+2]=d;this.array[a+3]=e;return this},onUpload:function(a){this.onUploadCallback=a;return this},clone:function(){return(new this.constructor(this.array,this.itemSize)).copy(this)}});rc.prototype=Object.create(T.prototype);rc.prototype.constructor=rc;sc.prototype=Object.create(T.prototype);sc.prototype.constructor=sc;tc.prototype=Object.create(T.prototype);tc.prototype.constructor=tc;uc.prototype=Object.create(T.prototype);
-uc.prototype.constructor=uc;kb.prototype=Object.create(T.prototype);kb.prototype.constructor=kb;vc.prototype=Object.create(T.prototype);vc.prototype.constructor=vc;lb.prototype=Object.create(T.prototype);lb.prototype.constructor=lb;z.prototype=Object.create(T.prototype);z.prototype.constructor=z;wc.prototype=Object.create(T.prototype);wc.prototype.constructor=wc;Object.assign(Ce.prototype,{computeGroups:function(a){var b=[],c=void 0;a=a.faces;for(var d=0;d<a.length;d++){var e=a[d];if(e.materialIndex!==
-c){c=e.materialIndex;void 0!==f&&(f.count=3*d-f.start,b.push(f));var f={start:3*d,materialIndex:c}}}void 0!==f&&(f.count=3*d-f.start,b.push(f));this.groups=b},fromGeometry:function(a){var b=a.faces,c=a.vertices,d=a.faceVertexUvs,e=d[0]&&0<d[0].length,f=d[1]&&0<d[1].length,g=a.morphTargets,h=g.length;if(0<h){var l=[];for(var m=0;m<h;m++)l[m]=[];this.morphTargets.position=l}var k=a.morphNormals,n=k.length;if(0<n){var p=[];for(m=0;m<n;m++)p[m]=[];this.morphTargets.normal=p}var r=a.skinIndices,q=a.skinWeights,
-v=r.length===c.length,x=q.length===c.length;for(m=0;m<b.length;m++){var y=b[m];this.vertices.push(c[y.a],c[y.b],c[y.c]);var w=y.vertexNormals;3===w.length?this.normals.push(w[0],w[1],w[2]):(w=y.normal,this.normals.push(w,w,w));w=y.vertexColors;3===w.length?this.colors.push(w[0],w[1],w[2]):(w=y.color,this.colors.push(w,w,w));!0===e&&(w=d[0][m],void 0!==w?this.uvs.push(w[0],w[1],w[2]):(console.warn("THREE.DirectGeometry.fromGeometry(): Undefined vertexUv ",m),this.uvs.push(new C,new C,new C)));!0===
-f&&(w=d[1][m],void 0!==w?this.uvs2.push(w[0],w[1],w[2]):(console.warn("THREE.DirectGeometry.fromGeometry(): Undefined vertexUv2 ",m),this.uvs2.push(new C,new C,new C)));for(w=0;w<h;w++){var B=g[w].vertices;l[w].push(B[y.a],B[y.b],B[y.c])}for(w=0;w<n;w++)B=k[w].vertexNormals[m],p[w].push(B.a,B.b,B.c);v&&this.skinIndices.push(r[y.a],r[y.b],r[y.c]);x&&this.skinWeights.push(q[y.a],q[y.b],q[y.c])}this.computeGroups(a);this.verticesNeedUpdate=a.verticesNeedUpdate;this.normalsNeedUpdate=a.normalsNeedUpdate;
-this.colorsNeedUpdate=a.colorsNeedUpdate;this.uvsNeedUpdate=a.uvsNeedUpdate;this.groupsNeedUpdate=a.groupsNeedUpdate;return this}});var Bf=1;F.prototype=Object.assign(Object.create(xa.prototype),{constructor:F,isBufferGeometry:!0,getIndex:function(){return this.index},setIndex:function(a){Array.isArray(a)?this.index=new (65535<De(a)?lb:kb)(a,1):this.index=a},addAttribute:function(a,b,c){if(b&&b.isBufferAttribute||b&&b.isInterleavedBufferAttribute)if("index"===a)console.warn("THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute."),
-this.setIndex(b);else return this.attributes[a]=b,this;else console.warn("THREE.BufferGeometry: .addAttribute() now expects ( name, attribute )."),this.addAttribute(a,new T(b,c))},getAttribute:function(a){return this.attributes[a]},removeAttribute:function(a){delete this.attributes[a];return this},addGroup:function(a,b,c){this.groups.push({start:a,count:b,materialIndex:void 0!==c?c:0})},clearGroups:function(){this.groups=[]},setDrawRange:function(a,b){this.drawRange.start=a;this.drawRange.count=b},
-applyMatrix:function(a){var b=this.attributes.position;void 0!==b&&(a.applyToBufferAttribute(b),b.needsUpdate=!0);b=this.attributes.normal;void 0!==b&&((new sa).getNormalMatrix(a).applyToBufferAttribute(b),b.needsUpdate=!0);null!==this.boundingBox&&this.computeBoundingBox();null!==this.boundingSphere&&this.computeBoundingSphere();return this},rotateX:function(){var a=new M;return function(b){a.makeRotationX(b);this.applyMatrix(a);return this}}(),rotateY:function(){var a=new M;return function(b){a.makeRotationY(b);
-this.applyMatrix(a);return this}}(),rotateZ:function(){var a=new M;return function(b){a.makeRotationZ(b);this.applyMatrix(a);return this}}(),translate:function(){var a=new M;return function(b,c,d){a.makeTranslation(b,c,d);this.applyMatrix(a);return this}}(),scale:function(){var a=new M;return function(b,c,d){a.makeScale(b,c,d);this.applyMatrix(a);return this}}(),lookAt:function(){var a=new A;return function(b){a.lookAt(b);a.updateMatrix();this.applyMatrix(a.matrix)}}(),center:function(){var a=new p;
-return function(){this.computeBoundingBox();this.boundingBox.getCenter(a).negate();this.translate(a.x,a.y,a.z);return this}}(),setFromObject:function(a){var b=a.geometry;if(a.isPoints||a.isLine){a=new z(3*b.vertices.length,3);var c=new z(3*b.colors.length,3);this.addAttribute("position",a.copyVector3sArray(b.vertices));this.addAttribute("color",c.copyColorsArray(b.colors));b.lineDistances&&b.lineDistances.length===b.vertices.length&&(a=new z(b.lineDistances.length,1),this.addAttribute("lineDistance",
-a.copyArray(b.lineDistances)));null!==b.boundingSphere&&(this.boundingSphere=b.boundingSphere.clone());null!==b.boundingBox&&(this.boundingBox=b.boundingBox.clone())}else a.isMesh&&b&&b.isGeometry&&this.fromGeometry(b);return this},setFromPoints:function(a){for(var b=[],c=0,d=a.length;c<d;c++){var e=a[c];b.push(e.x,e.y,e.z||0)}this.addAttribute("position",new z(b,3));return this},updateFromObject:function(a){var b=a.geometry;if(a.isMesh){var c=b.__directGeometry;!0===b.elementsNeedUpdate&&(c=void 0,
-b.elementsNeedUpdate=!1);if(void 0===c)return this.fromGeometry(b);c.verticesNeedUpdate=b.verticesNeedUpdate;c.normalsNeedUpdate=b.normalsNeedUpdate;c.colorsNeedUpdate=b.colorsNeedUpdate;c.uvsNeedUpdate=b.uvsNeedUpdate;c.groupsNeedUpdate=b.groupsNeedUpdate;b.verticesNeedUpdate=!1;b.normalsNeedUpdate=!1;b.colorsNeedUpdate=!1;b.uvsNeedUpdate=!1;b.groupsNeedUpdate=!1;b=c}!0===b.verticesNeedUpdate&&(c=this.attributes.position,void 0!==c&&(c.copyVector3sArray(b.vertices),c.needsUpdate=!0),b.verticesNeedUpdate=
-!1);!0===b.normalsNeedUpdate&&(c=this.attributes.normal,void 0!==c&&(c.copyVector3sArray(b.normals),c.needsUpdate=!0),b.normalsNeedUpdate=!1);!0===b.colorsNeedUpdate&&(c=this.attributes.color,void 0!==c&&(c.copyColorsArray(b.colors),c.needsUpdate=!0),b.colorsNeedUpdate=!1);b.uvsNeedUpdate&&(c=this.attributes.uv,void 0!==c&&(c.copyVector2sArray(b.uvs),c.needsUpdate=!0),b.uvsNeedUpdate=!1);b.lineDistancesNeedUpdate&&(c=this.attributes.lineDistance,void 0!==c&&(c.copyArray(b.lineDistances),c.needsUpdate=
-!0),b.lineDistancesNeedUpdate=!1);b.groupsNeedUpdate&&(b.computeGroups(a.geometry),this.groups=b.groups,b.groupsNeedUpdate=!1);return this},fromGeometry:function(a){a.__directGeometry=(new Ce).fromGeometry(a);return this.fromDirectGeometry(a.__directGeometry)},fromDirectGeometry:function(a){var b=new Float32Array(3*a.vertices.length);this.addAttribute("position",(new T(b,3)).copyVector3sArray(a.vertices));0<a.normals.length&&(b=new Float32Array(3*a.normals.length),this.addAttribute("normal",(new T(b,
-3)).copyVector3sArray(a.normals)));0<a.colors.length&&(b=new Float32Array(3*a.colors.length),this.addAttribute("color",(new T(b,3)).copyColorsArray(a.colors)));0<a.uvs.length&&(b=new Float32Array(2*a.uvs.length),this.addAttribute("uv",(new T(b,2)).copyVector2sArray(a.uvs)));0<a.uvs2.length&&(b=new Float32Array(2*a.uvs2.length),this.addAttribute("uv2",(new T(b,2)).copyVector2sArray(a.uvs2)));this.groups=a.groups;for(var c in a.morphTargets){b=[];for(var d=a.morphTargets[c],e=0,f=d.length;e<f;e++){var g=
-d[e],h=new z(3*g.length,3);b.push(h.copyVector3sArray(g))}this.morphAttributes[c]=b}0<a.skinIndices.length&&(c=new z(4*a.skinIndices.length,4),this.addAttribute("skinIndex",c.copyVector4sArray(a.skinIndices)));0<a.skinWeights.length&&(c=new z(4*a.skinWeights.length,4),this.addAttribute("skinWeight",c.copyVector4sArray(a.skinWeights)));null!==a.boundingSphere&&(this.boundingSphere=a.boundingSphere.clone());null!==a.boundingBox&&(this.boundingBox=a.boundingBox.clone());return this},computeBoundingBox:function(){null===
-this.boundingBox&&(this.boundingBox=new Va);var a=this.attributes.position;void 0!==a?this.boundingBox.setFromBufferAttribute(a):this.boundingBox.makeEmpty();(isNaN(this.boundingBox.min.x)||isNaN(this.boundingBox.min.y)||isNaN(this.boundingBox.min.z))&&console.error('THREE.BufferGeometry.computeBoundingBox: Computed min/max have NaN values. The "position" attribute is likely to have NaN values.',this)},computeBoundingSphere:function(){var a=new Va,b=new p;return function(){null===this.boundingSphere&&
-(this.boundingSphere=new Ea);var c=this.attributes.position;if(c){var d=this.boundingSphere.center;a.setFromBufferAttribute(c);a.getCenter(d);for(var e=0,f=0,g=c.count;f<g;f++)b.x=c.getX(f),b.y=c.getY(f),b.z=c.getZ(f),e=Math.max(e,d.distanceToSquared(b));this.boundingSphere.radius=Math.sqrt(e);isNaN(this.boundingSphere.radius)&&console.error('THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.',this)}}}(),computeFaceNormals:function(){},
-computeVertexNormals:function(){var a=this.index,b=this.attributes,c=this.groups;if(b.position){var d=b.position.array;if(void 0===b.normal)this.addAttribute("normal",new T(new Float32Array(d.length),3));else for(var e=b.normal.array,f=0,g=e.length;f<g;f++)e[f]=0;e=b.normal.array;var h=new p,l=new p,m=new p,k=new p,n=new p;if(a){a=a.array;0===c.length&&this.addGroup(0,a.length);for(var t=0,r=c.length;t<r;++t){f=c[t];g=f.start;var q=f.count;f=g;for(g+=q;f<g;f+=3){q=3*a[f+0];var v=3*a[f+1];var x=3*
-a[f+2];h.fromArray(d,q);l.fromArray(d,v);m.fromArray(d,x);k.subVectors(m,l);n.subVectors(h,l);k.cross(n);e[q]+=k.x;e[q+1]+=k.y;e[q+2]+=k.z;e[v]+=k.x;e[v+1]+=k.y;e[v+2]+=k.z;e[x]+=k.x;e[x+1]+=k.y;e[x+2]+=k.z}}}else for(f=0,g=d.length;f<g;f+=9)h.fromArray(d,f),l.fromArray(d,f+3),m.fromArray(d,f+6),k.subVectors(m,l),n.subVectors(h,l),k.cross(n),e[f]=k.x,e[f+1]=k.y,e[f+2]=k.z,e[f+3]=k.x,e[f+4]=k.y,e[f+5]=k.z,e[f+6]=k.x,e[f+7]=k.y,e[f+8]=k.z;this.normalizeNormals();b.normal.needsUpdate=!0}},merge:function(a,
-b){if(a&&a.isBufferGeometry){void 0===b&&(b=0,console.warn("THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge."));var c=this.attributes,d;for(d in c)if(void 0!==a.attributes[d]){var e=c[d].array,f=a.attributes[d],g=f.array,h=0;for(f=f.itemSize*b;h<g.length;h++,f++)e[f]=g[h]}return this}console.error("THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.",a)},normalizeNormals:function(){var a=
-new p;return function(){for(var b=this.attributes.normal,c=0,d=b.count;c<d;c++)a.x=b.getX(c),a.y=b.getY(c),a.z=b.getZ(c),a.normalize(),b.setXYZ(c,a.x,a.y,a.z)}}(),toNonIndexed:function(){if(null===this.index)return console.warn("THREE.BufferGeometry.toNonIndexed(): Geometry is already non-indexed."),this;var a=new F,b=this.index.array,c=this.attributes,d;for(d in c){var e=c[d],f=e.array,g=e.itemSize,h=new f.constructor(b.length*g),l=0;e=0;for(var m=b.length;e<m;e++){var k=b[e]*g;for(var n=0;n<g;n++)h[l++]=
-f[k++]}a.addAttribute(d,new T(h,g))}b=this.groups;e=0;for(m=b.length;e<m;e++)c=b[e],a.addGroup(c.start,c.count,c.materialIndex);return a},toJSON:function(){var a={metadata:{version:4.5,type:"BufferGeometry",generator:"BufferGeometry.toJSON"}};a.uuid=this.uuid;a.type=this.type;""!==this.name&&(a.name=this.name);if(void 0!==this.parameters){var b=this.parameters;for(e in b)void 0!==b[e]&&(a[e]=b[e]);return a}a.data={attributes:{}};var c=this.index;null!==c&&(b=Array.prototype.slice.call(c.array),a.data.index=
-{type:c.array.constructor.name,array:b});c=this.attributes;for(e in c){var d=c[e];b=Array.prototype.slice.call(d.array);a.data.attributes[e]={itemSize:d.itemSize,type:d.array.constructor.name,array:b,normalized:d.normalized}}var e=this.groups;0<e.length&&(a.data.groups=JSON.parse(JSON.stringify(e)));e=this.boundingSphere;null!==e&&(a.data.boundingSphere={center:e.center.toArray(),radius:e.radius});return a},clone:function(){return(new F).copy(this)},copy:function(a){var b;this.index=null;this.attributes=
-{};this.morphAttributes={};this.groups=[];this.boundingSphere=this.boundingBox=null;this.name=a.name;var c=a.index;null!==c&&this.setIndex(c.clone());c=a.attributes;for(g in c)this.addAttribute(g,c[g].clone());var d=a.morphAttributes;for(g in d){var e=[],f=d[g];c=0;for(b=f.length;c<b;c++)e.push(f[c].clone());this.morphAttributes[g]=e}var g=a.groups;c=0;for(b=g.length;c<b;c++)d=g[c],this.addGroup(d.start,d.count,d.materialIndex);g=a.boundingBox;null!==g&&(this.boundingBox=g.clone());g=a.boundingSphere;
-null!==g&&(this.boundingSphere=g.clone());this.drawRange.start=a.drawRange.start;this.drawRange.count=a.drawRange.count;return this},dispose:function(){this.dispatchEvent({type:"dispose"})}});Kb.prototype=Object.create(N.prototype);Kb.prototype.constructor=Kb;mb.prototype=Object.create(F.prototype);mb.prototype.constructor=mb;xc.prototype=Object.create(N.prototype);xc.prototype.constructor=xc;pb.prototype=Object.create(F.prototype);pb.prototype.constructor=pb;var Cf=0;O.prototype=Object.assign(Object.create(xa.prototype),
-{constructor:O,isMaterial:!0,onBeforeCompile:function(){},setValues:function(a){if(void 0!==a)for(var b in a){var c=a[b];if(void 0===c)console.warn("THREE.Material: '"+b+"' parameter is undefined.");else if("shading"===b)console.warn("THREE."+this.type+": .shading has been removed. Use the boolean .flatShading instead."),this.flatShading=1===c?!0:!1;else{var d=this[b];void 0===d?console.warn("THREE."+this.type+": '"+b+"' is not a property of this material."):d&&d.isColor?d.set(c):d&&d.isVector3&&
-c&&c.isVector3?d.copy(c):this[b]="overdraw"===b?Number(c):c}}},toJSON:function(a){function b(a){var b=[],c;for(c in a){var d=a[c];delete d.metadata;b.push(d)}return b}var c=void 0===a||"string"===typeof a;c&&(a={textures:{},images:{}});var d={metadata:{version:4.5,type:"Material",generator:"Material.toJSON"}};d.uuid=this.uuid;d.type=this.type;""!==this.name&&(d.name=this.name);this.color&&this.color.isColor&&(d.color=this.color.getHex());void 0!==this.roughness&&(d.roughness=this.roughness);void 0!==
-this.metalness&&(d.metalness=this.metalness);this.emissive&&this.emissive.isColor&&(d.emissive=this.emissive.getHex());1!==this.emissiveIntensity&&(d.emissiveIntensity=this.emissiveIntensity);this.specular&&this.specular.isColor&&(d.specular=this.specular.getHex());void 0!==this.shininess&&(d.shininess=this.shininess);void 0!==this.clearCoat&&(d.clearCoat=this.clearCoat);void 0!==this.clearCoatRoughness&&(d.clearCoatRoughness=this.clearCoatRoughness);this.map&&this.map.isTexture&&(d.map=this.map.toJSON(a).uuid);
-this.alphaMap&&this.alphaMap.isTexture&&(d.alphaMap=this.alphaMap.toJSON(a).uuid);this.lightMap&&this.lightMap.isTexture&&(d.lightMap=this.lightMap.toJSON(a).uuid);this.bumpMap&&this.bumpMap.isTexture&&(d.bumpMap=this.bumpMap.toJSON(a).uuid,d.bumpScale=this.bumpScale);this.normalMap&&this.normalMap.isTexture&&(d.normalMap=this.normalMap.toJSON(a).uuid,d.normalScale=this.normalScale.toArray());this.displacementMap&&this.displacementMap.isTexture&&(d.displacementMap=this.displacementMap.toJSON(a).uuid,
-d.displacementScale=this.displacementScale,d.displacementBias=this.displacementBias);this.roughnessMap&&this.roughnessMap.isTexture&&(d.roughnessMap=this.roughnessMap.toJSON(a).uuid);this.metalnessMap&&this.metalnessMap.isTexture&&(d.metalnessMap=this.metalnessMap.toJSON(a).uuid);this.emissiveMap&&this.emissiveMap.isTexture&&(d.emissiveMap=this.emissiveMap.toJSON(a).uuid);this.specularMap&&this.specularMap.isTexture&&(d.specularMap=this.specularMap.toJSON(a).uuid);this.envMap&&this.envMap.isTexture&&
-(d.envMap=this.envMap.toJSON(a).uuid,d.reflectivity=this.reflectivity);this.gradientMap&&this.gradientMap.isTexture&&(d.gradientMap=this.gradientMap.toJSON(a).uuid);void 0!==this.size&&(d.size=this.size);void 0!==this.sizeAttenuation&&(d.sizeAttenuation=this.sizeAttenuation);1!==this.blending&&(d.blending=this.blending);!0===this.flatShading&&(d.flatShading=this.flatShading);0!==this.side&&(d.side=this.side);0!==this.vertexColors&&(d.vertexColors=this.vertexColors);1>this.opacity&&(d.opacity=this.opacity);
-!0===this.transparent&&(d.transparent=this.transparent);d.depthFunc=this.depthFunc;d.depthTest=this.depthTest;d.depthWrite=this.depthWrite;0!==this.rotation&&(d.rotation=this.rotation);1!==this.linewidth&&(d.linewidth=this.linewidth);void 0!==this.dashSize&&(d.dashSize=this.dashSize);void 0!==this.gapSize&&(d.gapSize=this.gapSize);void 0!==this.scale&&(d.scale=this.scale);!0===this.dithering&&(d.dithering=!0);0<this.alphaTest&&(d.alphaTest=this.alphaTest);!0===this.premultipliedAlpha&&(d.premultipliedAlpha=
-this.premultipliedAlpha);!0===this.wireframe&&(d.wireframe=this.wireframe);1<this.wireframeLinewidth&&(d.wireframeLinewidth=this.wireframeLinewidth);"round"!==this.wireframeLinecap&&(d.wireframeLinecap=this.wireframeLinecap);"round"!==this.wireframeLinejoin&&(d.wireframeLinejoin=this.wireframeLinejoin);!0===this.morphTargets&&(d.morphTargets=!0);!0===this.skinning&&(d.skinning=!0);!1===this.visible&&(d.visible=!1);"{}"!==JSON.stringify(this.userData)&&(d.userData=this.userData);c&&(c=b(a.textures),
-a=b(a.images),0<c.length&&(d.textures=c),0<a.length&&(d.images=a));return d},clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.name=a.name;this.fog=a.fog;this.lights=a.lights;this.blending=a.blending;this.side=a.side;this.flatShading=a.flatShading;this.vertexColors=a.vertexColors;this.opacity=a.opacity;this.transparent=a.transparent;this.blendSrc=a.blendSrc;this.blendDst=a.blendDst;this.blendEquation=a.blendEquation;this.blendSrcAlpha=a.blendSrcAlpha;this.blendDstAlpha=
-a.blendDstAlpha;this.blendEquationAlpha=a.blendEquationAlpha;this.depthFunc=a.depthFunc;this.depthTest=a.depthTest;this.depthWrite=a.depthWrite;this.colorWrite=a.colorWrite;this.precision=a.precision;this.polygonOffset=a.polygonOffset;this.polygonOffsetFactor=a.polygonOffsetFactor;this.polygonOffsetUnits=a.polygonOffsetUnits;this.dithering=a.dithering;this.alphaTest=a.alphaTest;this.premultipliedAlpha=a.premultipliedAlpha;this.overdraw=a.overdraw;this.visible=a.visible;this.userData=JSON.parse(JSON.stringify(a.userData));
-this.clipShadows=a.clipShadows;this.clipIntersection=a.clipIntersection;var b=a.clippingPlanes,c=null;if(null!==b){var d=b.length;c=Array(d);for(var e=0;e!==d;++e)c[e]=b[e].clone()}this.clippingPlanes=c;this.shadowSide=a.shadowSide;return this},dispose:function(){this.dispatchEvent({type:"dispose"})}});za.prototype=Object.create(O.prototype);za.prototype.constructor=za;za.prototype.isMeshBasicMaterial=!0;za.prototype.copy=function(a){O.prototype.copy.call(this,a);this.color.copy(a.color);this.map=
-a.map;this.lightMap=a.lightMap;this.lightMapIntensity=a.lightMapIntensity;this.aoMap=a.aoMap;this.aoMapIntensity=a.aoMapIntensity;this.specularMap=a.specularMap;this.alphaMap=a.alphaMap;this.envMap=a.envMap;this.combine=a.combine;this.reflectivity=a.reflectivity;this.refractionRatio=a.refractionRatio;this.wireframe=a.wireframe;this.wireframeLinewidth=a.wireframeLinewidth;this.wireframeLinecap=a.wireframeLinecap;this.wireframeLinejoin=a.wireframeLinejoin;this.skinning=a.skinning;this.morphTargets=
-a.morphTargets;return this};va.prototype=Object.create(O.prototype);va.prototype.constructor=va;va.prototype.isShaderMaterial=!0;va.prototype.copy=function(a){O.prototype.copy.call(this,a);this.fragmentShader=a.fragmentShader;this.vertexShader=a.vertexShader;this.uniforms=Da.clone(a.uniforms);this.defines=a.defines;this.wireframe=a.wireframe;this.wireframeLinewidth=a.wireframeLinewidth;this.lights=a.lights;this.clipping=a.clipping;this.skinning=a.skinning;this.morphTargets=a.morphTargets;this.morphNormals=
-a.morphNormals;this.extensions=a.extensions;return this};va.prototype.toJSON=function(a){a=O.prototype.toJSON.call(this,a);a.uniforms=this.uniforms;a.vertexShader=this.vertexShader;a.fragmentShader=this.fragmentShader;return a};Object.assign(qb.prototype,{set:function(a,b){this.origin.copy(a);this.direction.copy(b);return this},clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.origin.copy(a.origin);this.direction.copy(a.direction);return this},at:function(a,b){void 0===
-b&&(console.warn("THREE.Ray: .at() target is now required"),b=new p);return b.copy(this.direction).multiplyScalar(a).add(this.origin)},lookAt:function(a){this.direction.copy(a).sub(this.origin).normalize();return this},recast:function(){var a=new p;return function(b){this.origin.copy(this.at(b,a));return this}}(),closestPointToPoint:function(a,b){void 0===b&&(console.warn("THREE.Ray: .closestPointToPoint() target is now required"),b=new p);b.subVectors(a,this.origin);a=b.dot(this.direction);return 0>
-a?b.copy(this.origin):b.copy(this.direction).multiplyScalar(a).add(this.origin)},distanceToPoint:function(a){return Math.sqrt(this.distanceSqToPoint(a))},distanceSqToPoint:function(){var a=new p;return function(b){var c=a.subVectors(b,this.origin).dot(this.direction);if(0>c)return this.origin.distanceToSquared(b);a.copy(this.direction).multiplyScalar(c).add(this.origin);return a.distanceToSquared(b)}}(),distanceSqToSegment:function(){var a=new p,b=new p,c=new p;return function(d,e,f,g){a.copy(d).add(e).multiplyScalar(.5);
-b.copy(e).sub(d).normalize();c.copy(this.origin).sub(a);var h=.5*d.distanceTo(e),l=-this.direction.dot(b),m=c.dot(this.direction),k=-c.dot(b),n=c.lengthSq(),p=Math.abs(1-l*l);if(0<p){d=l*k-m;e=l*m-k;var r=h*p;0<=d?e>=-r?e<=r?(h=1/p,d*=h,e*=h,l=d*(d+l*e+2*m)+e*(l*d+e+2*k)+n):(e=h,d=Math.max(0,-(l*e+m)),l=-d*d+e*(e+2*k)+n):(e=-h,d=Math.max(0,-(l*e+m)),l=-d*d+e*(e+2*k)+n):e<=-r?(d=Math.max(0,-(-l*h+m)),e=0<d?-h:Math.min(Math.max(-h,-k),h),l=-d*d+e*(e+2*k)+n):e<=r?(d=0,e=Math.min(Math.max(-h,-k),h),l=
-e*(e+2*k)+n):(d=Math.max(0,-(l*h+m)),e=0<d?h:Math.min(Math.max(-h,-k),h),l=-d*d+e*(e+2*k)+n)}else e=0<l?-h:h,d=Math.max(0,-(l*e+m)),l=-d*d+e*(e+2*k)+n;f&&f.copy(this.direction).multiplyScalar(d).add(this.origin);g&&g.copy(b).multiplyScalar(e).add(a);return l}}(),intersectSphere:function(){var a=new p;return function(b,c){a.subVectors(b.center,this.origin);var d=a.dot(this.direction),e=a.dot(a)-d*d;b=b.radius*b.radius;if(e>b)return null;b=Math.sqrt(b-e);e=d-b;d+=b;return 0>e&&0>d?null:0>e?this.at(d,
-c):this.at(e,c)}}(),intersectsSphere:function(a){return this.distanceToPoint(a.center)<=a.radius},distanceToPlane:function(a){var b=a.normal.dot(this.direction);if(0===b)return 0===a.distanceToPoint(this.origin)?0:null;a=-(this.origin.dot(a.normal)+a.constant)/b;return 0<=a?a:null},intersectPlane:function(a,b){a=this.distanceToPlane(a);return null===a?null:this.at(a,b)},intersectsPlane:function(a){var b=a.distanceToPoint(this.origin);return 0===b||0>a.normal.dot(this.direction)*b?!0:!1},intersectBox:function(a,
-b){var c=1/this.direction.x;var d=1/this.direction.y;var e=1/this.direction.z,f=this.origin;if(0<=c){var g=(a.min.x-f.x)*c;c*=a.max.x-f.x}else g=(a.max.x-f.x)*c,c*=a.min.x-f.x;if(0<=d){var h=(a.min.y-f.y)*d;d*=a.max.y-f.y}else h=(a.max.y-f.y)*d,d*=a.min.y-f.y;if(g>d||h>c)return null;if(h>g||g!==g)g=h;if(d<c||c!==c)c=d;0<=e?(h=(a.min.z-f.z)*e,a=(a.max.z-f.z)*e):(h=(a.max.z-f.z)*e,a=(a.min.z-f.z)*e);if(g>a||h>c)return null;if(h>g||g!==g)g=h;if(a<c||c!==c)c=a;return 0>c?null:this.at(0<=g?g:c,b)},intersectsBox:function(){var a=
-new p;return function(b){return null!==this.intersectBox(b,a)}}(),intersectTriangle:function(){var a=new p,b=new p,c=new p,d=new p;return function(e,f,g,h,l){b.subVectors(f,e);c.subVectors(g,e);d.crossVectors(b,c);f=this.direction.dot(d);if(0<f){if(h)return null;h=1}else if(0>f)h=-1,f=-f;else return null;a.subVectors(this.origin,e);e=h*this.direction.dot(c.crossVectors(a,c));if(0>e)return null;g=h*this.direction.dot(b.cross(a));if(0>g||e+g>f)return null;e=-h*a.dot(d);return 0>e?null:this.at(e/f,l)}}(),
-applyMatrix4:function(a){this.origin.applyMatrix4(a);this.direction.transformDirection(a);return this},equals:function(a){return a.origin.equals(this.origin)&&a.direction.equals(this.direction)}});Object.assign(Lb.prototype,{set:function(a,b){this.start.copy(a);this.end.copy(b);return this},clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.start.copy(a.start);this.end.copy(a.end);return this},getCenter:function(a){void 0===a&&(console.warn("THREE.Line3: .getCenter() target is now required"),
-a=new p);return a.addVectors(this.start,this.end).multiplyScalar(.5)},delta:function(a){void 0===a&&(console.warn("THREE.Line3: .delta() target is now required"),a=new p);return a.subVectors(this.end,this.start)},distanceSq:function(){return this.start.distanceToSquared(this.end)},distance:function(){return this.start.distanceTo(this.end)},at:function(a,b){void 0===b&&(console.warn("THREE.Line3: .at() target is now required"),b=new p);return this.delta(b).multiplyScalar(a).add(this.start)},closestPointToPointParameter:function(){var a=
-new p,b=new p;return function(c,d){a.subVectors(c,this.start);b.subVectors(this.end,this.start);c=b.dot(b);c=b.dot(a)/c;d&&(c=S.clamp(c,0,1));return c}}(),closestPointToPoint:function(a,b,c){a=this.closestPointToPointParameter(a,b);void 0===c&&(console.warn("THREE.Line3: .closestPointToPoint() target is now required"),c=new p);return this.delta(c).multiplyScalar(a).add(this.start)},applyMatrix4:function(a){this.start.applyMatrix4(a);this.end.applyMatrix4(a);return this},equals:function(a){return a.start.equals(this.start)&&
-a.end.equals(this.end)}});Object.assign(Aa,{getNormal:function(){var a=new p;return function(b,c,d,e){void 0===e&&(console.warn("THREE.Triangle: .getNormal() target is now required"),e=new p);e.subVectors(d,c);a.subVectors(b,c);e.cross(a);b=e.lengthSq();return 0<b?e.multiplyScalar(1/Math.sqrt(b)):e.set(0,0,0)}}(),getBarycoord:function(){var a=new p,b=new p,c=new p;return function(d,e,f,g,h){a.subVectors(g,e);b.subVectors(f,e);c.subVectors(d,e);d=a.dot(a);e=a.dot(b);f=a.dot(c);var l=b.dot(b);g=b.dot(c);
-var m=d*l-e*e;void 0===h&&(console.warn("THREE.Triangle: .getBarycoord() target is now required"),h=new p);if(0===m)return h.set(-2,-1,-1);m=1/m;l=(l*f-e*g)*m;d=(d*g-e*f)*m;return h.set(1-l-d,d,l)}}(),containsPoint:function(){var a=new p;return function(b,c,d,e){Aa.getBarycoord(b,c,d,e,a);return 0<=a.x&&0<=a.y&&1>=a.x+a.y}}()});Object.assign(Aa.prototype,{set:function(a,b,c){this.a.copy(a);this.b.copy(b);this.c.copy(c);return this},setFromPointsAndIndices:function(a,b,c,d){this.a.copy(a[b]);this.b.copy(a[c]);
-this.c.copy(a[d]);return this},clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.a.copy(a.a);this.b.copy(a.b);this.c.copy(a.c);return this},getArea:function(){var a=new p,b=new p;return function(){a.subVectors(this.c,this.b);b.subVectors(this.a,this.b);return.5*a.cross(b).length()}}(),getMidpoint:function(a){void 0===a&&(console.warn("THREE.Triangle: .getMidpoint() target is now required"),a=new p);return a.addVectors(this.a,this.b).add(this.c).multiplyScalar(1/3)},getNormal:function(a){return Aa.getNormal(this.a,
-this.b,this.c,a)},getPlane:function(a){void 0===a&&(console.warn("THREE.Triangle: .getPlane() target is now required"),a=new p);return a.setFromCoplanarPoints(this.a,this.b,this.c)},getBarycoord:function(a,b){return Aa.getBarycoord(a,this.a,this.b,this.c,b)},containsPoint:function(a){return Aa.containsPoint(a,this.a,this.b,this.c)},intersectsBox:function(a){return a.intersectsTriangle(this)},closestPointToPoint:function(){var a=new Fa,b=[new Lb,new Lb,new Lb],c=new p,d=new p;return function(e,f){void 0===
-f&&(console.warn("THREE.Triangle: .closestPointToPoint() target is now required"),f=new p);var g=Infinity;a.setFromCoplanarPoints(this.a,this.b,this.c);a.projectPoint(e,c);if(!0===this.containsPoint(c))f.copy(c);else for(b[0].set(this.a,this.b),b[1].set(this.b,this.c),b[2].set(this.c,this.a),e=0;e<b.length;e++){b[e].closestPointToPoint(c,!0,d);var h=c.distanceToSquared(d);h<g&&(g=h,f.copy(d))}return f}}(),equals:function(a){return a.a.equals(this.a)&&a.b.equals(this.b)&&a.c.equals(this.c)}});oa.prototype=
-Object.assign(Object.create(A.prototype),{constructor:oa,isMesh:!0,setDrawMode:function(a){this.drawMode=a},copy:function(a){A.prototype.copy.call(this,a);this.drawMode=a.drawMode;void 0!==a.morphTargetInfluences&&(this.morphTargetInfluences=a.morphTargetInfluences.slice());void 0!==a.morphTargetDictionary&&(this.morphTargetDictionary=Object.assign({},a.morphTargetDictionary));return this},updateMorphTargets:function(){var a=this.geometry;if(a.isBufferGeometry){a=a.morphAttributes;var b=Object.keys(a);
-if(0<b.length){var c=a[b[0]];if(void 0!==c)for(this.morphTargetInfluences=[],this.morphTargetDictionary={},a=0,b=c.length;a<b;a++){var d=c[a].name||String(a);this.morphTargetInfluences.push(0);this.morphTargetDictionary[d]=a}}}else if(c=a.morphTargets,void 0!==c&&0<c.length)for(this.morphTargetInfluences=[],this.morphTargetDictionary={},a=0,b=c.length;a<b;a++)d=c[a].name||String(a),this.morphTargetInfluences.push(0),this.morphTargetDictionary[d]=a},raycast:function(){function a(a,b,c,d,e,f,g){Aa.getBarycoord(a,
-b,c,d,v);e.multiplyScalar(v.x);f.multiplyScalar(v.y);g.multiplyScalar(v.z);e.add(f).add(g);return e.clone()}function b(a,b,c,d,e,f,g,h){if(null===(1===b.side?d.intersectTriangle(g,f,e,!0,h):d.intersectTriangle(e,f,g,2!==b.side,h)))return null;y.copy(h);y.applyMatrix4(a.matrixWorld);b=c.ray.origin.distanceTo(y);return b<c.near||b>c.far?null:{distance:b,point:y.clone(),object:a}}function c(c,d,e,f,m,k,n,p){g.fromBufferAttribute(f,k);h.fromBufferAttribute(f,n);l.fromBufferAttribute(f,p);if(c=b(c,c.material,
-d,e,g,h,l,x))m&&(t.fromBufferAttribute(m,k),r.fromBufferAttribute(m,n),q.fromBufferAttribute(m,p),c.uv=a(x,g,h,l,t,r,q)),m=new Wa(k,n,p),Aa.getNormal(g,h,l,m.normal),c.face=m,c.faceIndex=k;return c}var d=new M,e=new qb,f=new Ea,g=new p,h=new p,l=new p,m=new p,k=new p,n=new p,t=new C,r=new C,q=new C,v=new p,x=new p,y=new p;return function(p,u){var v=this.geometry,w=this.material,y=this.matrixWorld;if(void 0!==w&&(null===v.boundingSphere&&v.computeBoundingSphere(),f.copy(v.boundingSphere),f.applyMatrix4(y),
-!1!==p.ray.intersectsSphere(f)&&(d.getInverse(y),e.copy(p.ray).applyMatrix4(d),null===v.boundingBox||!1!==e.intersectsBox(v.boundingBox)))){var B;if(v.isBufferGeometry){w=v.index;var C=v.attributes.position;y=v.attributes.uv;var A;if(null!==w){var z=0;for(A=w.count;z<A;z+=3){v=w.getX(z);var E=w.getX(z+1);var F=w.getX(z+2);if(B=c(this,p,e,C,y,v,E,F))B.faceIndex=Math.floor(z/3),u.push(B)}}else if(void 0!==C)for(z=0,A=C.count;z<A;z+=3)if(v=z,E=z+1,F=z+2,B=c(this,p,e,C,y,v,E,F))B.index=v,u.push(B)}else if(v.isGeometry){y=
-Array.isArray(w);z=v.vertices;A=v.faces;E=v.faceVertexUvs[0];0<E.length&&(C=E);for(var I=0,L=A.length;I<L;I++){var Q=A[I];B=y?w[Q.materialIndex]:w;if(void 0!==B){E=z[Q.a];F=z[Q.b];var N=z[Q.c];if(!0===B.morphTargets){var M=v.morphTargets,O=this.morphTargetInfluences;g.set(0,0,0);h.set(0,0,0);l.set(0,0,0);for(var T=0,S=M.length;T<S;T++){var V=O[T];if(0!==V){var X=M[T].vertices;g.addScaledVector(m.subVectors(X[Q.a],E),V);h.addScaledVector(k.subVectors(X[Q.b],F),V);l.addScaledVector(n.subVectors(X[Q.c],
-N),V)}}g.add(E);h.add(F);l.add(N);E=g;F=h;N=l}if(B=b(this,B,p,e,E,F,N,x))C&&C[I]&&(M=C[I],t.copy(M[0]),r.copy(M[1]),q.copy(M[2]),B.uv=a(x,E,F,N,t,r,q)),B.face=Q,B.faceIndex=I,u.push(B)}}}}}}(),clone:function(){return(new this.constructor(this.geometry,this.material)).copy(this)}});ab.prototype=Object.create(Y.prototype);ab.prototype.constructor=ab;ab.prototype.isCubeTexture=!0;Object.defineProperty(ab.prototype,"images",{get:function(){return this.image},set:function(a){this.image=a}});var Je=new Y,
-Ke=new ab,Ee=[],Ge=[],Ie=new Float32Array(16),He=new Float32Array(9);Oe.prototype.setValue=function(a,b){for(var c=this.seq,d=0,e=c.length;d!==e;++d){var f=c[d];f.setValue(a,b[f.id])}};var Ud=/([\w\d_]+)(\])?(\[|\.)?/g;bb.prototype.setValue=function(a,b,c){b=this.map[b];void 0!==b&&b.setValue(a,c,this.renderer)};bb.prototype.setOptional=function(a,b,c){b=b[c];void 0!==b&&this.setValue(a,c,b)};bb.upload=function(a,b,c,d){for(var e=0,f=b.length;e!==f;++e){var g=b[e],h=c[g.id];!1!==h.needsUpdate&&g.setValue(a,
-h.value,d)}};bb.seqWithValue=function(a,b){for(var c=[],d=0,e=a.length;d!==e;++d){var f=a[d];f.id in b&&c.push(f)}return c};var rg=0,Ag=0;cb.prototype=Object.create(O.prototype);cb.prototype.constructor=cb;cb.prototype.isMeshDepthMaterial=!0;cb.prototype.copy=function(a){O.prototype.copy.call(this,a);this.depthPacking=a.depthPacking;this.skinning=a.skinning;this.morphTargets=a.morphTargets;this.map=a.map;this.alphaMap=a.alphaMap;this.displacementMap=a.displacementMap;this.displacementScale=a.displacementScale;
-this.displacementBias=a.displacementBias;this.wireframe=a.wireframe;this.wireframeLinewidth=a.wireframeLinewidth;return this};db.prototype=Object.create(O.prototype);db.prototype.constructor=db;db.prototype.isMeshDistanceMaterial=!0;db.prototype.copy=function(a){O.prototype.copy.call(this,a);this.referencePosition.copy(a.referencePosition);this.nearDistance=a.nearDistance;this.farDistance=a.farDistance;this.skinning=a.skinning;this.morphTargets=a.morphTargets;this.map=a.map;this.alphaMap=a.alphaMap;
-this.displacementMap=a.displacementMap;this.displacementScale=a.displacementScale;this.displacementBias=a.displacementBias;return this};zc.prototype=Object.create(Y.prototype);zc.prototype.constructor=zc;la.prototype=Object.assign(Object.create(Qa.prototype),{constructor:la,isPerspectiveCamera:!0,copy:function(a,b){Qa.prototype.copy.call(this,a,b);this.fov=a.fov;this.zoom=a.zoom;this.near=a.near;this.far=a.far;this.focus=a.focus;this.aspect=a.aspect;this.view=null===a.view?null:Object.assign({},a.view);
-this.filmGauge=a.filmGauge;this.filmOffset=a.filmOffset;return this},setFocalLength:function(a){a=.5*this.getFilmHeight()/a;this.fov=2*S.RAD2DEG*Math.atan(a);this.updateProjectionMatrix()},getFocalLength:function(){var a=Math.tan(.5*S.DEG2RAD*this.fov);return.5*this.getFilmHeight()/a},getEffectiveFOV:function(){return 2*S.RAD2DEG*Math.atan(Math.tan(.5*S.DEG2RAD*this.fov)/this.zoom)},getFilmWidth:function(){return this.filmGauge*Math.min(this.aspect,1)},getFilmHeight:function(){return this.filmGauge/
-Math.max(this.aspect,1)},setViewOffset:function(a,b,c,d,e,f){this.aspect=a/b;null===this.view&&(this.view={enabled:!0,fullWidth:1,fullHeight:1,offsetX:0,offsetY:0,width:1,height:1});this.view.enabled=!0;this.view.fullWidth=a;this.view.fullHeight=b;this.view.offsetX=c;this.view.offsetY=d;this.view.width=e;this.view.height=f;this.updateProjectionMatrix()},clearViewOffset:function(){null!==this.view&&(this.view.enabled=!1);this.updateProjectionMatrix()},updateProjectionMatrix:function(){var a=this.near,
-b=a*Math.tan(.5*S.DEG2RAD*this.fov)/this.zoom,c=2*b,d=this.aspect*c,e=-.5*d,f=this.view;if(null!==this.view&&this.view.enabled){var g=f.fullWidth,h=f.fullHeight;e+=f.offsetX*d/g;b-=f.offsetY*c/h;d*=f.width/g;c*=f.height/h}f=this.filmOffset;0!==f&&(e+=a*f/this.getFilmWidth());this.projectionMatrix.makePerspective(e,e+d,b,b-c,a,this.far)},toJSON:function(a){a=A.prototype.toJSON.call(this,a);a.object.fov=this.fov;a.object.zoom=this.zoom;a.object.near=this.near;a.object.far=this.far;a.object.focus=this.focus;
-a.object.aspect=this.aspect;null!==this.view&&(a.object.view=Object.assign({},this.view));a.object.filmGauge=this.filmGauge;a.object.filmOffset=this.filmOffset;return a}});qd.prototype=Object.assign(Object.create(la.prototype),{constructor:qd,isArrayCamera:!0});Ob.prototype.isFogExp2=!0;Ob.prototype.clone=function(){return new Ob(this.color.getHex(),this.density)};Ob.prototype.toJSON=function(){return{type:"FogExp2",color:this.color.getHex(),density:this.density}};Pb.prototype.isFog=!0;Pb.prototype.clone=
-function(){return new Pb(this.color.getHex(),this.near,this.far)};Pb.prototype.toJSON=function(){return{type:"Fog",color:this.color.getHex(),near:this.near,far:this.far}};rd.prototype=Object.assign(Object.create(A.prototype),{constructor:rd,copy:function(a,b){A.prototype.copy.call(this,a,b);null!==a.background&&(this.background=a.background.clone());null!==a.fog&&(this.fog=a.fog.clone());null!==a.overrideMaterial&&(this.overrideMaterial=a.overrideMaterial.clone());this.autoUpdate=a.autoUpdate;this.matrixAutoUpdate=
-a.matrixAutoUpdate;return this},toJSON:function(a){var b=A.prototype.toJSON.call(this,a);null!==this.background&&(b.object.background=this.background.toJSON(a));null!==this.fog&&(b.object.fog=this.fog.toJSON());return b}});eb.prototype=Object.create(O.prototype);eb.prototype.constructor=eb;eb.prototype.isSpriteMaterial=!0;eb.prototype.copy=function(a){O.prototype.copy.call(this,a);this.color.copy(a.color);this.map=a.map;this.rotation=a.rotation;return this};Ac.prototype=Object.assign(Object.create(A.prototype),
-{constructor:Ac,isSprite:!0,raycast:function(){var a=new p,b=new p,c=new p;return function(d,e){b.setFromMatrixPosition(this.matrixWorld);d.ray.closestPointToPoint(b,a);c.setFromMatrixScale(this.matrixWorld);var f=c.x*c.y/4;b.distanceToSquared(a)>f||(f=d.ray.origin.distanceTo(a),f<d.near||f>d.far||e.push({distance:f,point:a.clone(),face:null,object:this}))}}(),clone:function(){return(new this.constructor(this.material)).copy(this)},copy:function(a){A.prototype.copy.call(this,a);void 0!==a.center&&
-this.center.copy(a.center);return this}});Bc.prototype=Object.assign(Object.create(A.prototype),{constructor:Bc,copy:function(a){A.prototype.copy.call(this,a,!1);a=a.levels;for(var b=0,c=a.length;b<c;b++){var d=a[b];this.addLevel(d.object.clone(),d.distance)}return this},addLevel:function(a,b){void 0===b&&(b=0);b=Math.abs(b);for(var c=this.levels,d=0;d<c.length&&!(b<c[d].distance);d++);c.splice(d,0,{distance:b,object:a});this.add(a)},getObjectForDistance:function(a){for(var b=this.levels,c=1,d=b.length;c<
-d&&!(a<b[c].distance);c++);return b[c-1].object},raycast:function(){var a=new p;return function(b,c){a.setFromMatrixPosition(this.matrixWorld);var d=b.ray.origin.distanceTo(a);this.getObjectForDistance(d).raycast(b,c)}}(),update:function(){var a=new p,b=new p;return function(c){var d=this.levels;if(1<d.length){a.setFromMatrixPosition(c.matrixWorld);b.setFromMatrixPosition(this.matrixWorld);c=a.distanceTo(b);d[0].object.visible=!0;for(var e=1,f=d.length;e<f;e++)if(c>=d[e].distance)d[e-1].object.visible=
-!1,d[e].object.visible=!0;else break;for(;e<f;e++)d[e].object.visible=!1}}}(),toJSON:function(a){a=A.prototype.toJSON.call(this,a);a.object.levels=[];for(var b=this.levels,c=0,d=b.length;c<d;c++){var e=b[c];a.object.levels.push({object:e.object.uuid,distance:e.distance})}return a}});Object.assign(Cc.prototype,{calculateInverses:function(){this.boneInverses=[];for(var a=0,b=this.bones.length;a<b;a++){var c=new M;this.bones[a]&&c.getInverse(this.bones[a].matrixWorld);this.boneInverses.push(c)}},pose:function(){var a,
-b;var c=0;for(b=this.bones.length;c<b;c++)(a=this.bones[c])&&a.matrixWorld.getInverse(this.boneInverses[c]);c=0;for(b=this.bones.length;c<b;c++)if(a=this.bones[c])a.parent&&a.parent.isBone?(a.matrix.getInverse(a.parent.matrixWorld),a.matrix.multiply(a.matrixWorld)):a.matrix.copy(a.matrixWorld),a.matrix.decompose(a.position,a.quaternion,a.scale)},update:function(){var a=new M,b=new M;return function(){for(var c=this.bones,d=this.boneInverses,e=this.boneMatrices,f=this.boneTexture,g=0,h=c.length;g<
-h;g++)a.multiplyMatrices(c[g]?c[g].matrixWorld:b,d[g]),a.toArray(e,16*g);void 0!==f&&(f.needsUpdate=!0)}}(),clone:function(){return new Cc(this.bones,this.boneInverses)},getBoneByName:function(a){for(var b=0,c=this.bones.length;b<c;b++){var d=this.bones[b];if(d.name===a)return d}}});sd.prototype=Object.assign(Object.create(A.prototype),{constructor:sd,isBone:!0});td.prototype=Object.assign(Object.create(oa.prototype),{constructor:td,isSkinnedMesh:!0,initBones:function(){var a=[],b;if(this.geometry&&
-void 0!==this.geometry.bones){var c=0;for(b=this.geometry.bones.length;c<b;c++){var d=this.geometry.bones[c];var e=new sd;a.push(e);e.name=d.name;e.position.fromArray(d.pos);e.quaternion.fromArray(d.rotq);void 0!==d.scl&&e.scale.fromArray(d.scl)}c=0;for(b=this.geometry.bones.length;c<b;c++)d=this.geometry.bones[c],-1!==d.parent&&null!==d.parent&&void 0!==a[d.parent]?a[d.parent].add(a[c]):this.add(a[c])}this.updateMatrixWorld(!0);return a},bind:function(a,b){this.skeleton=a;void 0===b&&(this.updateMatrixWorld(!0),
-this.skeleton.calculateInverses(),b=this.matrixWorld);this.bindMatrix.copy(b);this.bindMatrixInverse.getInverse(b)},pose:function(){this.skeleton.pose()},normalizeSkinWeights:function(){var a;if(this.geometry&&this.geometry.isGeometry)for(a=0;a<this.geometry.skinWeights.length;a++){var b=this.geometry.skinWeights[a];var c=1/b.manhattanLength();Infinity!==c?b.multiplyScalar(c):b.set(1,0,0,0)}else if(this.geometry&&this.geometry.isBufferGeometry){b=new ea;var d=this.geometry.attributes.skinWeight;for(a=
-0;a<d.count;a++)b.x=d.getX(a),b.y=d.getY(a),b.z=d.getZ(a),b.w=d.getW(a),c=1/b.manhattanLength(),Infinity!==c?b.multiplyScalar(c):b.set(1,0,0,0),d.setXYZW(a,b.x,b.y,b.z,b.w)}},updateMatrixWorld:function(a){oa.prototype.updateMatrixWorld.call(this,a);"attached"===this.bindMode?this.bindMatrixInverse.getInverse(this.matrixWorld):"detached"===this.bindMode?this.bindMatrixInverse.getInverse(this.bindMatrix):console.warn("THREE.SkinnedMesh: Unrecognized bindMode: "+this.bindMode)},clone:function(){return(new this.constructor(this.geometry,
-this.material)).copy(this)}});U.prototype=Object.create(O.prototype);U.prototype.constructor=U;U.prototype.isLineBasicMaterial=!0;U.prototype.copy=function(a){O.prototype.copy.call(this,a);this.color.copy(a.color);this.linewidth=a.linewidth;this.linecap=a.linecap;this.linejoin=a.linejoin;return this};ua.prototype=Object.assign(Object.create(A.prototype),{constructor:ua,isLine:!0,computeLineDistances:function(){var a=new p,b=new p;return function(){var c=this.geometry;if(c.isBufferGeometry)if(null===
-c.index){for(var d=c.attributes.position,e=[0],f=1,g=d.count;f<g;f++)a.fromBufferAttribute(d,f-1),b.fromBufferAttribute(d,f),e[f]=e[f-1],e[f]+=a.distanceTo(b);c.addAttribute("lineDistance",new THREE.Float32BufferAttribute(e,1))}else console.warn("THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.");else if(c.isGeometry)for(d=c.vertices,e=c.lineDistances,e[0]=0,f=1,g=d.length;f<g;f++)e[f]=e[f-1],e[f]+=d[f-1].distanceTo(d[f]);return this}}(),raycast:function(){var a=
-new M,b=new qb,c=new Ea;return function(d,e){var f=d.linePrecision;f*=f;var g=this.geometry,h=this.matrixWorld;null===g.boundingSphere&&g.computeBoundingSphere();c.copy(g.boundingSphere);c.applyMatrix4(h);if(!1!==d.ray.intersectsSphere(c)){a.getInverse(h);b.copy(d.ray).applyMatrix4(a);var l=new p,m=new p;h=new p;var k=new p,n=this&&this.isLineSegments?2:1;if(g.isBufferGeometry){var t=g.index,r=g.attributes.position.array;if(null!==t){t=t.array;g=0;for(var q=t.length-1;g<q;g+=n){var v=t[g+1];l.fromArray(r,
-3*t[g]);m.fromArray(r,3*v);v=b.distanceSqToSegment(l,m,k,h);v>f||(k.applyMatrix4(this.matrixWorld),v=d.ray.origin.distanceTo(k),v<d.near||v>d.far||e.push({distance:v,point:h.clone().applyMatrix4(this.matrixWorld),index:g,face:null,faceIndex:null,object:this}))}}else for(g=0,q=r.length/3-1;g<q;g+=n)l.fromArray(r,3*g),m.fromArray(r,3*g+3),v=b.distanceSqToSegment(l,m,k,h),v>f||(k.applyMatrix4(this.matrixWorld),v=d.ray.origin.distanceTo(k),v<d.near||v>d.far||e.push({distance:v,point:h.clone().applyMatrix4(this.matrixWorld),
-index:g,face:null,faceIndex:null,object:this}))}else if(g.isGeometry)for(l=g.vertices,m=l.length,g=0;g<m-1;g+=n)v=b.distanceSqToSegment(l[g],l[g+1],k,h),v>f||(k.applyMatrix4(this.matrixWorld),v=d.ray.origin.distanceTo(k),v<d.near||v>d.far||e.push({distance:v,point:h.clone().applyMatrix4(this.matrixWorld),index:g,face:null,faceIndex:null,object:this}))}}}(),clone:function(){return(new this.constructor(this.geometry,this.material)).copy(this)}});aa.prototype=Object.assign(Object.create(ua.prototype),
-{constructor:aa,isLineSegments:!0,computeLineDistances:function(){var a=new p,b=new p;return function(){var c=this.geometry;if(c.isBufferGeometry)if(null===c.index){for(var d=c.attributes.position,e=[],f=0,g=d.count;f<g;f+=2)a.fromBufferAttribute(d,f),b.fromBufferAttribute(d,f+1),e[f]=0===f?0:e[f-1],e[f+1]=e[f]+a.distanceTo(b);c.addAttribute("lineDistance",new THREE.Float32BufferAttribute(e,1))}else console.warn("THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.");
-else if(c.isGeometry)for(d=c.vertices,e=c.lineDistances,f=0,g=d.length;f<g;f+=2)a.copy(d[f]),b.copy(d[f+1]),e[f]=0===f?0:e[f-1],e[f+1]=e[f]+a.distanceTo(b);return this}}()});ud.prototype=Object.assign(Object.create(ua.prototype),{constructor:ud,isLineLoop:!0});Ha.prototype=Object.create(O.prototype);Ha.prototype.constructor=Ha;Ha.prototype.isPointsMaterial=!0;Ha.prototype.copy=function(a){O.prototype.copy.call(this,a);this.color.copy(a.color);this.map=a.map;this.size=a.size;this.sizeAttenuation=a.sizeAttenuation;
-return this};Qb.prototype=Object.assign(Object.create(A.prototype),{constructor:Qb,isPoints:!0,raycast:function(){var a=new M,b=new qb,c=new Ea;return function(d,e){function f(a,c){var f=b.distanceSqToPoint(a);f<k&&(b.closestPointToPoint(a,n),n.applyMatrix4(l),a=d.ray.origin.distanceTo(n),a<d.near||a>d.far||e.push({distance:a,distanceToRay:Math.sqrt(f),point:n.clone(),index:c,face:null,object:g}))}var g=this,h=this.geometry,l=this.matrixWorld,m=d.params.Points.threshold;null===h.boundingSphere&&h.computeBoundingSphere();
-c.copy(h.boundingSphere);c.applyMatrix4(l);c.radius+=m;if(!1!==d.ray.intersectsSphere(c)){a.getInverse(l);b.copy(d.ray).applyMatrix4(a);m/=(this.scale.x+this.scale.y+this.scale.z)/3;var k=m*m;m=new p;var n=new p;if(h.isBufferGeometry){var t=h.index;h=h.attributes.position.array;if(null!==t){var r=t.array;t=0;for(var q=r.length;t<q;t++){var v=r[t];m.fromArray(h,3*v);f(m,v)}}else for(t=0,r=h.length/3;t<r;t++)m.fromArray(h,3*t),f(m,t)}else for(m=h.vertices,t=0,r=m.length;t<r;t++)f(m[t],t)}}}(),clone:function(){return(new this.constructor(this.geometry,
-this.material)).copy(this)}});vd.prototype=Object.assign(Object.create(A.prototype),{constructor:vd,isGroup:!0});Yd.prototype=Object.assign(Object.create(Y.prototype),{constructor:Yd,isVideoTexture:!0,update:function(){var a=this.image;a.readyState>=a.HAVE_CURRENT_DATA&&(this.needsUpdate=!0)}});Rb.prototype=Object.create(Y.prototype);Rb.prototype.constructor=Rb;Rb.prototype.isCompressedTexture=!0;Dc.prototype=Object.create(Y.prototype);Dc.prototype.constructor=Dc;Dc.prototype.isDepthTexture=!0;Sb.prototype=
-Object.create(F.prototype);Sb.prototype.constructor=Sb;Ec.prototype=Object.create(N.prototype);Ec.prototype.constructor=Ec;Tb.prototype=Object.create(F.prototype);Tb.prototype.constructor=Tb;Fc.prototype=Object.create(N.prototype);Fc.prototype.constructor=Fc;pa.prototype=Object.create(F.prototype);pa.prototype.constructor=pa;Gc.prototype=Object.create(N.prototype);Gc.prototype.constructor=Gc;Ub.prototype=Object.create(pa.prototype);Ub.prototype.constructor=Ub;Hc.prototype=Object.create(N.prototype);
-Hc.prototype.constructor=Hc;sb.prototype=Object.create(pa.prototype);sb.prototype.constructor=sb;Ic.prototype=Object.create(N.prototype);Ic.prototype.constructor=Ic;Vb.prototype=Object.create(pa.prototype);Vb.prototype.constructor=Vb;Jc.prototype=Object.create(N.prototype);Jc.prototype.constructor=Jc;Wb.prototype=Object.create(pa.prototype);Wb.prototype.constructor=Wb;Kc.prototype=Object.create(N.prototype);Kc.prototype.constructor=Kc;Xb.prototype=Object.create(F.prototype);Xb.prototype.constructor=
-Xb;Lc.prototype=Object.create(N.prototype);Lc.prototype.constructor=Lc;Yb.prototype=Object.create(F.prototype);Yb.prototype.constructor=Yb;Mc.prototype=Object.create(N.prototype);Mc.prototype.constructor=Mc;Zb.prototype=Object.create(F.prototype);Zb.prototype.constructor=Zb;var Lg={triangulate:function(a,b,c){c=c||2;var d=b&&b.length,e=d?b[0]*c:a.length,f=Xe(a,0,e,c,!0),g=[];if(!f)return g;var h;if(d){var l=c;d=[];var m;var k=0;for(m=b.length;k<m;k++){var n=b[k]*l;var p=k<m-1?b[k+1]*l:a.length;n=
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-e)}function e(a,b){for(J=a.length;0<=--J;){var c=J;var d=J-1;0>d&&(d=a.length-1);var e,f=B+2*x;for(e=0;e<f;e++){var g=aa*e,m=aa*(e+1),n=b+d+g,p=b+d+m;m=b+c+m;h(b+c+g);h(n);h(m);h(n);h(p);h(m);g=k.length/3;g=E.generateSideWallUV(T,k,g-6,g-3,g-2,g-1);l(g[0]);l(g[1]);l(g[3]);l(g[1]);l(g[2]);l(g[3])}}}function f(a,b,c){r.push(a);r.push(b);r.push(c)}function g(a,b,c){h(a);h(b);h(c);a=k.length/3;a=E.generateTopUV(T,k,a-3,a-2,a-1);l(a[0]);l(a[1]);l(a[2])}function h(a){n.push(k.length/3);k.push(r[3*a]);k.push(r[3*
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-R++,U++)R===W&&(R=0),U===W&&(U=0),w[J]=d(X[J],X[R],X[U]);G=[];var ea=w.concat();Q=0;for(M=O.length;Q<M;Q++){S=O[Q];var ca=[];J=0;W=S.length;R=W-1;for(U=J+1;J<W;J++,R++,U++)R===W&&(R=0),U===W&&(U=0),ca[J]=d(S[J],S[R],S[U]);G.push(ca);ea=ea.concat(ca)}for(R=0;R<x;R++){W=R/x;var fa=q*Math.cos(W*Math.PI/2);U=v*Math.sin(W*Math.PI/2);J=0;for(W=X.length;J<W;J++){var ha=c(X[J],w[J],U);f(ha.x,ha.y,-fa)}Q=0;for(M=O.length;Q<M;Q++)for(S=O[Q],ca=G[Q],J=0,W=S.length;J<W;J++)ha=c(S[J],ca[J],U),f(ha.x,ha.y,-fa)}U=
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-3,b=0;e(X,b);b+=X.length;Q=0;for(M=O.length;Q<M;Q++)S=O[Q],e(S,b),b+=S.length;T.addGroup(a,k.length/3-a,1)})();b.arrays||(this.setIndex(n),this.addAttribute("position",new z(k,3)),this.addAttribute("uv",new z(t,2)))};fb.WorldUVGenerator={generateTopUV:function(a,b,c,d,e){a=b[3*d];d=b[3*d+1];var f=b[3*e];e=b[3*e+1];return[new C(b[3*c],b[3*c+1]),new C(a,d),new C(f,e)]},generateSideWallUV:function(a,b,c,d,e,f){a=b[3*c];var g=b[3*c+1];c=b[3*c+2];var h=b[3*d],l=b[3*d+1];d=b[3*d+2];var m=b[3*e],k=b[3*e+
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-h.image=g;var l=new Ka(this.manager);l.setPath(this.path);l.setResponseType("arraybuffer");if(Array.isArray(a))for(var m=0,k=0,n=a.length;k<n;++k)e(k);else l.load(a,function(a){a=f._parser(a,!0);if(a.isCubemap)for(var c=a.mipmaps.length/a.mipmapCount,d=0;d<c;d++){g[d]={mipmaps:[]};for(var e=0;e<a.mipmapCount;e++)g[d].mipmaps.push(a.mipmaps[d*a.mipmapCount+e]),g[d].format=a.format,g[d].width=a.width,g[d].height=a.height}else h.image.width=a.width,h.image.height=a.height,h.mipmaps=a.mipmaps;1===a.mipmapCount&&
-(h.minFilter=1006);h.format=a.format;h.needsUpdate=!0;b&&b(h)},c,d);return h},setPath:function(a){this.path=a;return this}});Object.assign(be.prototype,{load:function(a,b,c,d){var e=this,f=new ib,g=new Ka(this.manager);g.setResponseType("arraybuffer");g.load(a,function(a){if(a=e._parser(a))void 0!==a.image?f.image=a.image:void 0!==a.data&&(f.image.width=a.width,f.image.height=a.height,f.image.data=a.data),f.wrapS=void 0!==a.wrapS?a.wrapS:1001,f.wrapT=void 0!==a.wrapT?a.wrapT:1001,f.magFilter=void 0!==
-a.magFilter?a.magFilter:1006,f.minFilter=void 0!==a.minFilter?a.minFilter:1008,f.anisotropy=void 0!==a.anisotropy?a.anisotropy:1,void 0!==a.format&&(f.format=a.format),void 0!==a.type&&(f.type=a.type),void 0!==a.mipmaps&&(f.mipmaps=a.mipmaps),1===a.mipmapCount&&(f.minFilter=1006),f.needsUpdate=!0,b&&b(f,a)},c,d);return f}});Object.assign(Yc.prototype,{crossOrigin:"Anonymous",load:function(a,b,c,d){void 0===a&&(a="");void 0!==this.path&&(a=this.path+a);a=this.manager.resolveURL(a);var e=this,f=Hb.get(a);
-if(void 0!==f)return e.manager.itemStart(a),setTimeout(function(){b&&b(f);e.manager.itemEnd(a)},0),f;c=document.createElementNS("http://www.w3.org/1999/xhtml","img");c.addEventListener("load",function(){Hb.add(a,this);b&&b(this);e.manager.itemEnd(a)},!1);c.addEventListener("error",function(b){d&&d(b);e.manager.itemEnd(a);e.manager.itemError(a)},!1);"data:"!==a.substr(0,5)&&void 0!==this.crossOrigin&&(c.crossOrigin=this.crossOrigin);e.manager.itemStart(a);c.src=a;return c},setCrossOrigin:function(a){this.crossOrigin=
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-this.needsUpdate=!1;var b=[],c=this.getPoint(0),d,e=0;b.push(0);for(d=1;d<=a;d++){var f=this.getPoint(d/a);e+=f.distanceTo(c);b.push(e);c=f}return this.cacheArcLengths=b},updateArcLengths:function(){this.needsUpdate=!0;this.getLengths()},getUtoTmapping:function(a,b){var c=this.getLengths(),d=c.length;b=b?b:a*c[d-1];for(var e=0,f=d-1,g;e<=f;)if(a=Math.floor(e+(f-e)/2),g=c[a]-b,0>g)e=a+1;else if(0<g)f=a-1;else{f=a;break}a=f;if(c[a]===b)return a/(d-1);e=c[a];return(a+(b-e)/(c[a+1]-e))/(d-1)},getTangent:function(a){var b=
-a-1E-4;a+=1E-4;0>b&&(b=0);1<a&&(a=1);b=this.getPoint(b);return this.getPoint(a).clone().sub(b).normalize()},getTangentAt:function(a){a=this.getUtoTmapping(a);return this.getTangent(a)},computeFrenetFrames:function(a,b){var c=new p,d=[],e=[],f=[],g=new p,h=new M,l;for(l=0;l<=a;l++){var m=l/a;d[l]=this.getTangentAt(m);d[l].normalize()}e[0]=new p;f[0]=new p;l=Number.MAX_VALUE;m=Math.abs(d[0].x);var k=Math.abs(d[0].y),n=Math.abs(d[0].z);m<=l&&(l=m,c.set(1,0,0));k<=l&&(l=k,c.set(0,1,0));n<=l&&c.set(0,
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-c*l)),f[l].crossVectors(d[l],e[l]);return{tangents:d,normals:e,binormals:f}},clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.arcLengthDivisions=a.arcLengthDivisions;return this},toJSON:function(){var a={metadata:{version:4.5,type:"Curve",generator:"Curve.toJSON"}};a.arcLengthDivisions=this.arcLengthDivisions;a.type=this.type;return a},fromJSON:function(a){this.arcLengthDivisions=a.arcLengthDivisions;return this}});ia.prototype=Object.create(E.prototype);ia.prototype.constructor=
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-f)};ia.prototype.copy=function(a){E.prototype.copy.call(this,a);this.aX=a.aX;this.aY=a.aY;this.xRadius=a.xRadius;this.yRadius=a.yRadius;this.aStartAngle=a.aStartAngle;this.aEndAngle=a.aEndAngle;this.aClockwise=a.aClockwise;this.aRotation=a.aRotation;return this};ia.prototype.toJSON=function(){var a=E.prototype.toJSON.call(this);a.aX=this.aX;a.aY=this.aY;a.xRadius=this.xRadius;a.yRadius=this.yRadius;a.aStartAngle=this.aStartAngle;a.aEndAngle=this.aEndAngle;a.aClockwise=this.aClockwise;a.aRotation=
-this.aRotation;return a};ia.prototype.fromJSON=function(a){E.prototype.fromJSON.call(this,a);this.aX=a.aX;this.aY=a.aY;this.xRadius=a.xRadius;this.yRadius=a.yRadius;this.aStartAngle=a.aStartAngle;this.aEndAngle=a.aEndAngle;this.aClockwise=a.aClockwise;this.aRotation=a.aRotation;return this};fc.prototype=Object.create(ia.prototype);fc.prototype.constructor=fc;fc.prototype.isArcCurve=!0;var Qd=new p,ye=new de,ze=new de,Ae=new de;X.prototype=Object.create(E.prototype);X.prototype.constructor=X;X.prototype.isCatmullRomCurve3=
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-.5:.25;d=Math.pow(f.distanceToSquared(g),l);e=Math.pow(g.distanceToSquared(h),l);l=Math.pow(h.distanceToSquared(c),l);1E-4>e&&(e=1);1E-4>d&&(d=e);1E-4>l&&(l=e);ye.initNonuniformCatmullRom(f.x,g.x,h.x,c.x,d,e,l);ze.initNonuniformCatmullRom(f.y,g.y,h.y,c.y,d,e,l);Ae.initNonuniformCatmullRom(f.z,g.z,h.z,c.z,d,e,l)}else"catmullrom"===this.curveType&&(ye.initCatmullRom(f.x,g.x,h.x,c.x,this.tension),ze.initCatmullRom(f.y,g.y,h.y,c.y,this.tension),Ae.initCatmullRom(f.z,g.z,h.z,c.z,this.tension));b.set(ye.calc(a),
-ze.calc(a),Ae.calc(a));return b};X.prototype.copy=function(a){E.prototype.copy.call(this,a);this.points=[];for(var b=0,c=a.points.length;b<c;b++)this.points.push(a.points[b].clone());this.closed=a.closed;this.curveType=a.curveType;this.tension=a.tension;return this};X.prototype.toJSON=function(){var a=E.prototype.toJSON.call(this);a.points=[];for(var b=0,c=this.points.length;b<c;b++)a.points.push(this.points[b].toArray());a.closed=this.closed;a.curveType=this.curveType;a.tension=this.tension;return a};
-X.prototype.fromJSON=function(a){E.prototype.fromJSON.call(this,a);this.points=[];for(var b=0,c=a.points.length;b<c;b++){var d=a.points[b];this.points.push((new p).fromArray(d))}this.closed=a.closed;this.curveType=a.curveType;this.tension=a.tension;return this};La.prototype=Object.create(E.prototype);La.prototype.constructor=La;La.prototype.isCubicBezierCurve=!0;La.prototype.getPoint=function(a,b){b=b||new C;var c=this.v0,d=this.v1,e=this.v2,f=this.v3;b.set($c(a,c.x,d.x,e.x,f.x),$c(a,c.y,d.y,e.y,
-f.y));return b};La.prototype.copy=function(a){E.prototype.copy.call(this,a);this.v0.copy(a.v0);this.v1.copy(a.v1);this.v2.copy(a.v2);this.v3.copy(a.v3);return this};La.prototype.toJSON=function(){var a=E.prototype.toJSON.call(this);a.v0=this.v0.toArray();a.v1=this.v1.toArray();a.v2=this.v2.toArray();a.v3=this.v3.toArray();return a};La.prototype.fromJSON=function(a){E.prototype.fromJSON.call(this,a);this.v0.fromArray(a.v0);this.v1.fromArray(a.v1);this.v2.fromArray(a.v2);this.v3.fromArray(a.v3);return this};
-Ta.prototype=Object.create(E.prototype);Ta.prototype.constructor=Ta;Ta.prototype.isCubicBezierCurve3=!0;Ta.prototype.getPoint=function(a,b){b=b||new p;var c=this.v0,d=this.v1,e=this.v2,f=this.v3;b.set($c(a,c.x,d.x,e.x,f.x),$c(a,c.y,d.y,e.y,f.y),$c(a,c.z,d.z,e.z,f.z));return b};Ta.prototype.copy=function(a){E.prototype.copy.call(this,a);this.v0.copy(a.v0);this.v1.copy(a.v1);this.v2.copy(a.v2);this.v3.copy(a.v3);return this};Ta.prototype.toJSON=function(){var a=E.prototype.toJSON.call(this);a.v0=this.v0.toArray();
-a.v1=this.v1.toArray();a.v2=this.v2.toArray();a.v3=this.v3.toArray();return a};Ta.prototype.fromJSON=function(a){E.prototype.fromJSON.call(this,a);this.v0.fromArray(a.v0);this.v1.fromArray(a.v1);this.v2.fromArray(a.v2);this.v3.fromArray(a.v3);return this};wa.prototype=Object.create(E.prototype);wa.prototype.constructor=wa;wa.prototype.isLineCurve=!0;wa.prototype.getPoint=function(a,b){b=b||new C;1===a?b.copy(this.v2):(b.copy(this.v2).sub(this.v1),b.multiplyScalar(a).add(this.v1));return b};wa.prototype.getPointAt=
-function(a,b){return this.getPoint(a,b)};wa.prototype.getTangent=function(){return this.v2.clone().sub(this.v1).normalize()};wa.prototype.copy=function(a){E.prototype.copy.call(this,a);this.v1.copy(a.v1);this.v2.copy(a.v2);return this};wa.prototype.toJSON=function(){var a=E.prototype.toJSON.call(this);a.v1=this.v1.toArray();a.v2=this.v2.toArray();return a};wa.prototype.fromJSON=function(a){E.prototype.fromJSON.call(this,a);this.v1.fromArray(a.v1);this.v2.fromArray(a.v2);return this};Ma.prototype=
-Object.create(E.prototype);Ma.prototype.constructor=Ma;Ma.prototype.isLineCurve3=!0;Ma.prototype.getPoint=function(a,b){b=b||new p;1===a?b.copy(this.v2):(b.copy(this.v2).sub(this.v1),b.multiplyScalar(a).add(this.v1));return b};Ma.prototype.getPointAt=function(a,b){return this.getPoint(a,b)};Ma.prototype.copy=function(a){E.prototype.copy.call(this,a);this.v1.copy(a.v1);this.v2.copy(a.v2);return this};Ma.prototype.toJSON=function(){var a=E.prototype.toJSON.call(this);a.v1=this.v1.toArray();a.v2=this.v2.toArray();
-return a};Ma.prototype.fromJSON=function(a){E.prototype.fromJSON.call(this,a);this.v1.fromArray(a.v1);this.v2.fromArray(a.v2);return this};Na.prototype=Object.create(E.prototype);Na.prototype.constructor=Na;Na.prototype.isQuadraticBezierCurve=!0;Na.prototype.getPoint=function(a,b){b=b||new C;var c=this.v0,d=this.v1,e=this.v2;b.set(Zc(a,c.x,d.x,e.x),Zc(a,c.y,d.y,e.y));return b};Na.prototype.copy=function(a){E.prototype.copy.call(this,a);this.v0.copy(a.v0);this.v1.copy(a.v1);this.v2.copy(a.v2);return this};
-Na.prototype.toJSON=function(){var a=E.prototype.toJSON.call(this);a.v0=this.v0.toArray();a.v1=this.v1.toArray();a.v2=this.v2.toArray();return a};Na.prototype.fromJSON=function(a){E.prototype.fromJSON.call(this,a);this.v0.fromArray(a.v0);this.v1.fromArray(a.v1);this.v2.fromArray(a.v2);return this};Ua.prototype=Object.create(E.prototype);Ua.prototype.constructor=Ua;Ua.prototype.isQuadraticBezierCurve3=!0;Ua.prototype.getPoint=function(a,b){b=b||new p;var c=this.v0,d=this.v1,e=this.v2;b.set(Zc(a,c.x,
-d.x,e.x),Zc(a,c.y,d.y,e.y),Zc(a,c.z,d.z,e.z));return b};Ua.prototype.copy=function(a){E.prototype.copy.call(this,a);this.v0.copy(a.v0);this.v1.copy(a.v1);this.v2.copy(a.v2);return this};Ua.prototype.toJSON=function(){var a=E.prototype.toJSON.call(this);a.v0=this.v0.toArray();a.v1=this.v1.toArray();a.v2=this.v2.toArray();return a};Ua.prototype.fromJSON=function(a){E.prototype.fromJSON.call(this,a);this.v0.fromArray(a.v0);this.v1.fromArray(a.v1);this.v2.fromArray(a.v2);return this};Oa.prototype=Object.create(E.prototype);
-Oa.prototype.constructor=Oa;Oa.prototype.isSplineCurve=!0;Oa.prototype.getPoint=function(a,b){b=b||new C;var c=this.points,d=(c.length-1)*a;a=Math.floor(d);d-=a;var e=c[0===a?a:a-1],f=c[a],g=c[a>c.length-2?c.length-1:a+1];c=c[a>c.length-3?c.length-1:a+2];b.set(ef(d,e.x,f.x,g.x,c.x),ef(d,e.y,f.y,g.y,c.y));return b};Oa.prototype.copy=function(a){E.prototype.copy.call(this,a);this.points=[];for(var b=0,c=a.points.length;b<c;b++)this.points.push(a.points[b].clone());return this};Oa.prototype.toJSON=function(){var a=
-E.prototype.toJSON.call(this);a.points=[];for(var b=0,c=this.points.length;b<c;b++)a.points.push(this.points[b].toArray());return a};Oa.prototype.fromJSON=function(a){E.prototype.fromJSON.call(this,a);this.points=[];for(var b=0,c=a.points.length;b<c;b++){var d=a.points[b];this.points.push((new C).fromArray(d))}return this};var Ng=Object.freeze({ArcCurve:fc,CatmullRomCurve3:X,CubicBezierCurve:La,CubicBezierCurve3:Ta,EllipseCurve:ia,LineCurve:wa,LineCurve3:Ma,QuadraticBezierCurve:Na,QuadraticBezierCurve3:Ua,
-SplineCurve:Oa});Za.prototype=Object.assign(Object.create(E.prototype),{constructor:Za,add:function(a){this.curves.push(a)},closePath:function(){var a=this.curves[0].getPoint(0),b=this.curves[this.curves.length-1].getPoint(1);a.equals(b)||this.curves.push(new wa(b,a))},getPoint:function(a){var b=a*this.getLength(),c=this.getCurveLengths();for(a=0;a<c.length;){if(c[a]>=b)return b=c[a]-b,a=this.curves[a],c=a.getLength(),a.getPointAt(0===c?0:1-b/c);a++}return null},getLength:function(){var a=this.getCurveLengths();
-return a[a.length-1]},updateArcLengths:function(){this.needsUpdate=!0;this.cacheLengths=null;this.getCurveLengths()},getCurveLengths:function(){if(this.cacheLengths&&this.cacheLengths.length===this.curves.length)return this.cacheLengths;for(var a=[],b=0,c=0,d=this.curves.length;c<d;c++)b+=this.curves[c].getLength(),a.push(b);return this.cacheLengths=a},getSpacedPoints:function(a){void 0===a&&(a=40);for(var b=[],c=0;c<=a;c++)b.push(this.getPoint(c/a));this.autoClose&&b.push(b[0]);return b},getPoints:function(a){a=
-a||12;for(var b=[],c,d=0,e=this.curves;d<e.length;d++){var f=e[d];f=f.getPoints(f&&f.isEllipseCurve?2*a:f&&f.isLineCurve?1:f&&f.isSplineCurve?a*f.points.length:a);for(var g=0;g<f.length;g++){var h=f[g];c&&c.equals(h)||(b.push(h),c=h)}}this.autoClose&&1<b.length&&!b[b.length-1].equals(b[0])&&b.push(b[0]);return b},copy:function(a){E.prototype.copy.call(this,a);this.curves=[];for(var b=0,c=a.curves.length;b<c;b++)this.curves.push(a.curves[b].clone());this.autoClose=a.autoClose;return this},toJSON:function(){var a=
-E.prototype.toJSON.call(this);a.autoClose=this.autoClose;a.curves=[];for(var b=0,c=this.curves.length;b<c;b++)a.curves.push(this.curves[b].toJSON());return a},fromJSON:function(a){E.prototype.fromJSON.call(this,a);this.autoClose=a.autoClose;this.curves=[];for(var b=0,c=a.curves.length;b<c;b++){var d=a.curves[b];this.curves.push((new Ng[d.type]).fromJSON(d))}return this}});Pa.prototype=Object.assign(Object.create(Za.prototype),{constructor:Pa,setFromPoints:function(a){this.moveTo(a[0].x,a[0].y);for(var b=
-1,c=a.length;b<c;b++)this.lineTo(a[b].x,a[b].y)},moveTo:function(a,b){this.currentPoint.set(a,b)},lineTo:function(a,b){var c=new wa(this.currentPoint.clone(),new C(a,b));this.curves.push(c);this.currentPoint.set(a,b)},quadraticCurveTo:function(a,b,c,d){a=new Na(this.currentPoint.clone(),new C(a,b),new C(c,d));this.curves.push(a);this.currentPoint.set(c,d)},bezierCurveTo:function(a,b,c,d,e,f){a=new La(this.currentPoint.clone(),new C(a,b),new C(c,d),new C(e,f));this.curves.push(a);this.currentPoint.set(e,
-f)},splineThru:function(a){var b=[this.currentPoint.clone()].concat(a);b=new Oa(b);this.curves.push(b);this.currentPoint.copy(a[a.length-1])},arc:function(a,b,c,d,e,f){this.absarc(a+this.currentPoint.x,b+this.currentPoint.y,c,d,e,f)},absarc:function(a,b,c,d,e,f){this.absellipse(a,b,c,c,d,e,f)},ellipse:function(a,b,c,d,e,f,g,h){this.absellipse(a+this.currentPoint.x,b+this.currentPoint.y,c,d,e,f,g,h)},absellipse:function(a,b,c,d,e,f,g,h){a=new ia(a,b,c,d,e,f,g,h);0<this.curves.length&&(b=a.getPoint(0),
-b.equals(this.currentPoint)||this.lineTo(b.x,b.y));this.curves.push(a);a=a.getPoint(1);this.currentPoint.copy(a)},copy:function(a){Za.prototype.copy.call(this,a);this.currentPoint.copy(a.currentPoint);return this},toJSON:function(){var a=Za.prototype.toJSON.call(this);a.currentPoint=this.currentPoint.toArray();return a},fromJSON:function(a){Za.prototype.fromJSON.call(this,a);this.currentPoint.fromArray(a.currentPoint);return this}});gb.prototype=Object.assign(Object.create(Pa.prototype),{constructor:gb,
-getPointsHoles:function(a){for(var b=[],c=0,d=this.holes.length;c<d;c++)b[c]=this.holes[c].getPoints(a);return b},extractPoints:function(a){return{shape:this.getPoints(a),holes:this.getPointsHoles(a)}},copy:function(a){Pa.prototype.copy.call(this,a);this.holes=[];for(var b=0,c=a.holes.length;b<c;b++)this.holes.push(a.holes[b].clone());return this},toJSON:function(){var a=Pa.prototype.toJSON.call(this);a.uuid=this.uuid;a.holes=[];for(var b=0,c=this.holes.length;b<c;b++)a.holes.push(this.holes[b].toJSON());
-return a},fromJSON:function(a){Pa.prototype.fromJSON.call(this,a);this.uuid=a.uuid;this.holes=[];for(var b=0,c=a.holes.length;b<c;b++){var d=a.holes[b];this.holes.push((new Pa).fromJSON(d))}return this}});ca.prototype=Object.assign(Object.create(A.prototype),{constructor:ca,isLight:!0,copy:function(a){A.prototype.copy.call(this,a);this.color.copy(a.color);this.intensity=a.intensity;return this},toJSON:function(a){a=A.prototype.toJSON.call(this,a);a.object.color=this.color.getHex();a.object.intensity=
-this.intensity;void 0!==this.groundColor&&(a.object.groundColor=this.groundColor.getHex());void 0!==this.distance&&(a.object.distance=this.distance);void 0!==this.angle&&(a.object.angle=this.angle);void 0!==this.decay&&(a.object.decay=this.decay);void 0!==this.penumbra&&(a.object.penumbra=this.penumbra);void 0!==this.shadow&&(a.object.shadow=this.shadow.toJSON());return a}});yd.prototype=Object.assign(Object.create(ca.prototype),{constructor:yd,isHemisphereLight:!0,copy:function(a){ca.prototype.copy.call(this,
-a);this.groundColor.copy(a.groundColor);return this}});Object.assign(Eb.prototype,{copy:function(a){this.camera=a.camera.clone();this.bias=a.bias;this.radius=a.radius;this.mapSize.copy(a.mapSize);return this},clone:function(){return(new this.constructor).copy(this)},toJSON:function(){var a={};0!==this.bias&&(a.bias=this.bias);1!==this.radius&&(a.radius=this.radius);if(512!==this.mapSize.x||512!==this.mapSize.y)a.mapSize=this.mapSize.toArray();a.camera=this.camera.toJSON(!1).object;delete a.camera.matrix;
-return a}});zd.prototype=Object.assign(Object.create(Eb.prototype),{constructor:zd,isSpotLightShadow:!0,update:function(a){var b=this.camera,c=2*S.RAD2DEG*a.angle,d=this.mapSize.width/this.mapSize.height;a=a.distance||b.far;if(c!==b.fov||d!==b.aspect||a!==b.far)b.fov=c,b.aspect=d,b.far=a,b.updateProjectionMatrix()}});Ad.prototype=Object.assign(Object.create(ca.prototype),{constructor:Ad,isSpotLight:!0,copy:function(a){ca.prototype.copy.call(this,a);this.distance=a.distance;this.angle=a.angle;this.penumbra=
-a.penumbra;this.decay=a.decay;this.target=a.target.clone();this.shadow=a.shadow.clone();return this}});Bd.prototype=Object.assign(Object.create(ca.prototype),{constructor:Bd,isPointLight:!0,copy:function(a){ca.prototype.copy.call(this,a);this.distance=a.distance;this.decay=a.decay;this.shadow=a.shadow.clone();return this}});Cd.prototype=Object.assign(Object.create(Eb.prototype),{constructor:Cd});Dd.prototype=Object.assign(Object.create(ca.prototype),{constructor:Dd,isDirectionalLight:!0,copy:function(a){ca.prototype.copy.call(this,
-a);this.target=a.target.clone();this.shadow=a.shadow.clone();return this}});Ed.prototype=Object.assign(Object.create(ca.prototype),{constructor:Ed,isAmbientLight:!0});Fd.prototype=Object.assign(Object.create(ca.prototype),{constructor:Fd,isRectAreaLight:!0,copy:function(a){ca.prototype.copy.call(this,a);this.width=a.width;this.height=a.height;return this},toJSON:function(a){a=ca.prototype.toJSON.call(this,a);a.object.width=this.width;a.object.height=this.height;return a}});Gd.prototype=Object.assign(Object.create(da.prototype),
-{constructor:Gd,ValueTypeName:"string",ValueBufferType:Array,DefaultInterpolation:2300,InterpolantFactoryMethodLinear:void 0,InterpolantFactoryMethodSmooth:void 0});Hd.prototype=Object.assign(Object.create(da.prototype),{constructor:Hd,ValueTypeName:"bool",ValueBufferType:Array,DefaultInterpolation:2300,InterpolantFactoryMethodLinear:void 0,InterpolantFactoryMethodSmooth:void 0});Object.assign(na.prototype,{evaluate:function(a){var b=this.parameterPositions,c=this._cachedIndex,d=b[c],e=b[c-1];a:{b:{c:{d:if(!(a<
-d)){for(var f=c+2;;){if(void 0===d){if(a<e)break d;this._cachedIndex=c=b.length;return this.afterEnd_(c-1,a,e)}if(c===f)break;e=d;d=b[++c];if(a<d)break b}d=b.length;break c}if(a>=e)break a;else{f=b[1];a<f&&(c=2,e=f);for(f=c-2;;){if(void 0===e)return this._cachedIndex=0,this.beforeStart_(0,a,d);if(c===f)break;d=e;e=b[--c-1];if(a>=e)break b}d=c;c=0}}for(;c<d;)e=c+d>>>1,a<b[e]?d=e:c=e+1;d=b[c];e=b[c-1];if(void 0===e)return this._cachedIndex=0,this.beforeStart_(0,a,d);if(void 0===d)return this._cachedIndex=
-c=b.length,this.afterEnd_(c-1,e,a)}this._cachedIndex=c;this.intervalChanged_(c,e,d)}return this.interpolate_(c,e,a,d)},settings:null,DefaultSettings_:{},getSettings_:function(){return this.settings||this.DefaultSettings_},copySampleValue_:function(a){var b=this.resultBuffer,c=this.sampleValues,d=this.valueSize;a*=d;for(var e=0;e!==d;++e)b[e]=c[a+e];return b},interpolate_:function(){throw Error("call to abstract method");},intervalChanged_:function(){}});Object.assign(na.prototype,{beforeStart_:na.prototype.copySampleValue_,
-afterEnd_:na.prototype.copySampleValue_});Id.prototype=Object.assign(Object.create(na.prototype),{constructor:Id,interpolate_:function(a,b,c,d){var e=this.resultBuffer,f=this.sampleValues,g=this.valueSize;a*=g;b=(c-b)/(d-b);for(c=a+g;a!==c;a+=4)ja.slerpFlat(e,0,f,a-g,f,a,b);return e}});ad.prototype=Object.assign(Object.create(da.prototype),{constructor:ad,ValueTypeName:"quaternion",DefaultInterpolation:2301,InterpolantFactoryMethodLinear:function(a){return new Id(this.times,this.values,this.getValueSize(),
-a)},InterpolantFactoryMethodSmooth:void 0});Jd.prototype=Object.assign(Object.create(da.prototype),{constructor:Jd,ValueTypeName:"color"});gc.prototype=Object.assign(Object.create(da.prototype),{constructor:gc,ValueTypeName:"number"});Kd.prototype=Object.assign(Object.create(na.prototype),{constructor:Kd,DefaultSettings_:{endingStart:2400,endingEnd:2400},intervalChanged_:function(a,b,c){var d=this.parameterPositions,e=a-2,f=a+1,g=d[e],h=d[f];if(void 0===g)switch(this.getSettings_().endingStart){case 2401:e=
-a;g=2*b-c;break;case 2402:e=d.length-2;g=b+d[e]-d[e+1];break;default:e=a,g=c}if(void 0===h)switch(this.getSettings_().endingEnd){case 2401:f=a;h=2*c-b;break;case 2402:f=1;h=c+d[1]-d[0];break;default:f=a-1,h=b}a=.5*(c-b);d=this.valueSize;this._weightPrev=a/(b-g);this._weightNext=a/(h-c);this._offsetPrev=e*d;this._offsetNext=f*d},interpolate_:function(a,b,c,d){var e=this.resultBuffer,f=this.sampleValues,g=this.valueSize;a*=g;var h=a-g,l=this._offsetPrev,m=this._offsetNext,k=this._weightPrev,n=this._weightNext,
-p=(c-b)/(d-b);c=p*p;d=c*p;b=-k*d+2*k*c-k*p;k=(1+k)*d+(-1.5-2*k)*c+(-.5+k)*p+1;p=(-1-n)*d+(1.5+n)*c+.5*p;n=n*d-n*c;for(c=0;c!==g;++c)e[c]=b*f[l+c]+k*f[h+c]+p*f[a+c]+n*f[m+c];return e}});bd.prototype=Object.assign(Object.create(na.prototype),{constructor:bd,interpolate_:function(a,b,c,d){var e=this.resultBuffer,f=this.sampleValues,g=this.valueSize;a*=g;var h=a-g;b=(c-b)/(d-b);c=1-b;for(d=0;d!==g;++d)e[d]=f[h+d]*c+f[a+d]*b;return e}});Ld.prototype=Object.assign(Object.create(na.prototype),{constructor:Ld,
-interpolate_:function(a){return this.copySampleValue_(a-1)}});var fa={arraySlice:function(a,b,c){return fa.isTypedArray(a)?new a.constructor(a.subarray(b,void 0!==c?c:a.length)):a.slice(b,c)},convertArray:function(a,b,c){return!a||!c&&a.constructor===b?a:"number"===typeof b.BYTES_PER_ELEMENT?new b(a):Array.prototype.slice.call(a)},isTypedArray:function(a){return ArrayBuffer.isView(a)&&!(a instanceof DataView)},getKeyframeOrder:function(a){for(var b=a.length,c=Array(b),d=0;d!==b;++d)c[d]=d;c.sort(function(b,
-c){return a[b]-a[c]});return c},sortedArray:function(a,b,c){for(var d=a.length,e=new a.constructor(d),f=0,g=0;g!==d;++f)for(var h=c[f]*b,l=0;l!==b;++l)e[g++]=a[h+l];return e},flattenJSON:function(a,b,c,d){for(var e=1,f=a[0];void 0!==f&&void 0===f[d];)f=a[e++];if(void 0!==f){var g=f[d];if(void 0!==g)if(Array.isArray(g)){do g=f[d],void 0!==g&&(b.push(f.time),c.push.apply(c,g)),f=a[e++];while(void 0!==f)}else if(void 0!==g.toArray){do g=f[d],void 0!==g&&(b.push(f.time),g.toArray(c,c.length)),f=a[e++];
-while(void 0!==f)}else{do g=f[d],void 0!==g&&(b.push(f.time),c.push(g)),f=a[e++];while(void 0!==f)}}}};Object.assign(da,{parse:function(a){if(void 0===a.type)throw Error("THREE.KeyframeTrack: track type undefined, can not parse");var b=da._getTrackTypeForValueTypeName(a.type);if(void 0===a.times){var c=[],d=[];fa.flattenJSON(a.keys,c,d,"value");a.times=c;a.values=d}return void 0!==b.parse?b.parse(a):new b(a.name,a.times,a.values,a.interpolation)},toJSON:function(a){var b=a.constructor;if(void 0!==
-b.toJSON)b=b.toJSON(a);else{b={name:a.name,times:fa.convertArray(a.times,Array),values:fa.convertArray(a.values,Array)};var c=a.getInterpolation();c!==a.DefaultInterpolation&&(b.interpolation=c)}b.type=a.ValueTypeName;return b},_getTrackTypeForValueTypeName:function(a){switch(a.toLowerCase()){case "scalar":case "double":case "float":case "number":case "integer":return gc;case "vector":case "vector2":case "vector3":case "vector4":return hc;case "color":return Jd;case "quaternion":return ad;case "bool":case "boolean":return Hd;
-case "string":return Gd}throw Error("THREE.KeyframeTrack: Unsupported typeName: "+a);}});Object.assign(da.prototype,{constructor:da,TimeBufferType:Float32Array,ValueBufferType:Float32Array,DefaultInterpolation:2301,InterpolantFactoryMethodDiscrete:function(a){return new Ld(this.times,this.values,this.getValueSize(),a)},InterpolantFactoryMethodLinear:function(a){return new bd(this.times,this.values,this.getValueSize(),a)},InterpolantFactoryMethodSmooth:function(a){return new Kd(this.times,this.values,
-this.getValueSize(),a)},setInterpolation:function(a){switch(a){case 2300:var b=this.InterpolantFactoryMethodDiscrete;break;case 2301:b=this.InterpolantFactoryMethodLinear;break;case 2302:b=this.InterpolantFactoryMethodSmooth}if(void 0===b){b="unsupported interpolation for "+this.ValueTypeName+" keyframe track named "+this.name;if(void 0===this.createInterpolant)if(a!==this.DefaultInterpolation)this.setInterpolation(this.DefaultInterpolation);else throw Error(b);console.warn("THREE.KeyframeTrack:",
-b)}else this.createInterpolant=b},getInterpolation:function(){switch(this.createInterpolant){case this.InterpolantFactoryMethodDiscrete:return 2300;case this.InterpolantFactoryMethodLinear:return 2301;case this.InterpolantFactoryMethodSmooth:return 2302}},getValueSize:function(){return this.values.length/this.times.length},shift:function(a){if(0!==a)for(var b=this.times,c=0,d=b.length;c!==d;++c)b[c]+=a;return this},scale:function(a){if(1!==a)for(var b=this.times,c=0,d=b.length;c!==d;++c)b[c]*=a;return this},
-trim:function(a,b){for(var c=this.times,d=c.length,e=0,f=d-1;e!==d&&c[e]<a;)++e;for(;-1!==f&&c[f]>b;)--f;++f;if(0!==e||f!==d)e>=f&&(f=Math.max(f,1),e=f-1),a=this.getValueSize(),this.times=fa.arraySlice(c,e,f),this.values=fa.arraySlice(this.values,e*a,f*a);return this},validate:function(){var a=!0,b=this.getValueSize();0!==b-Math.floor(b)&&(console.error("THREE.KeyframeTrack: Invalid value size in track.",this),a=!1);var c=this.times;b=this.values;var d=c.length;0===d&&(console.error("THREE.KeyframeTrack: Track is empty.",
-this),a=!1);for(var e=null,f=0;f!==d;f++){var g=c[f];if("number"===typeof g&&isNaN(g)){console.error("THREE.KeyframeTrack: Time is not a valid number.",this,f,g);a=!1;break}if(null!==e&&e>g){console.error("THREE.KeyframeTrack: Out of order keys.",this,f,g,e);a=!1;break}e=g}if(void 0!==b&&fa.isTypedArray(b))for(f=0,c=b.length;f!==c;++f)if(d=b[f],isNaN(d)){console.error("THREE.KeyframeTrack: Value is not a valid number.",this,f,d);a=!1;break}return a},optimize:function(){for(var a=this.times,b=this.values,
-c=this.getValueSize(),d=2302===this.getInterpolation(),e=1,f=a.length-1,g=1;g<f;++g){var h=!1,l=a[g];if(l!==a[g+1]&&(1!==g||l!==l[0]))if(d)h=!0;else{var k=g*c,p=k-c,n=k+c;for(l=0;l!==c;++l){var t=b[k+l];if(t!==b[p+l]||t!==b[n+l]){h=!0;break}}}if(h){if(g!==e)for(a[e]=a[g],h=g*c,k=e*c,l=0;l!==c;++l)b[k+l]=b[h+l];++e}}if(0<f){a[e]=a[f];h=f*c;k=e*c;for(l=0;l!==c;++l)b[k+l]=b[h+l];++e}e!==a.length&&(this.times=fa.arraySlice(a,0,e),this.values=fa.arraySlice(b,0,e*c));return this}});hc.prototype=Object.assign(Object.create(da.prototype),
-{constructor:hc,ValueTypeName:"vector"});Object.assign(Ba,{parse:function(a){for(var b=[],c=a.tracks,d=1/(a.fps||1),e=0,f=c.length;e!==f;++e)b.push(da.parse(c[e]).scale(d));return new Ba(a.name,a.duration,b)},toJSON:function(a){var b=[],c=a.tracks;a={name:a.name,duration:a.duration,tracks:b};for(var d=0,e=c.length;d!==e;++d)b.push(da.toJSON(c[d]));return a},CreateFromMorphTargetSequence:function(a,b,c,d){for(var e=b.length,f=[],g=0;g<e;g++){var h=[],l=[];h.push((g+e-1)%e,g,(g+1)%e);l.push(0,1,0);
-var k=fa.getKeyframeOrder(h);h=fa.sortedArray(h,1,k);l=fa.sortedArray(l,1,k);d||0!==h[0]||(h.push(e),l.push(l[0]));f.push((new gc(".morphTargetInfluences["+b[g].name+"]",h,l)).scale(1/c))}return new Ba(a,-1,f)},findByName:function(a,b){var c=a;Array.isArray(a)||(c=a.geometry&&a.geometry.animations||a.animations);for(a=0;a<c.length;a++)if(c[a].name===b)return c[a];return null},CreateClipsFromMorphTargetSequences:function(a,b,c){for(var d={},e=/^([\w-]*?)([\d]+)$/,f=0,g=a.length;f<g;f++){var h=a[f],
-l=h.name.match(e);if(l&&1<l.length){var k=l[1];(l=d[k])||(d[k]=l=[]);l.push(h)}}a=[];for(k in d)a.push(Ba.CreateFromMorphTargetSequence(k,d[k],b,c));return a},parseAnimation:function(a,b){if(!a)return console.error("THREE.AnimationClip: No animation in JSONLoader data."),null;var c=function(a,b,c,d,e){if(0!==c.length){var f=[],g=[];fa.flattenJSON(c,f,g,d);0!==f.length&&e.push(new a(b,f,g))}},d=[],e=a.name||"default",f=a.length||-1,g=a.fps||30;a=a.hierarchy||[];for(var h=0;h<a.length;h++){var l=a[h].keys;
-if(l&&0!==l.length)if(l[0].morphTargets){f={};for(var k=0;k<l.length;k++)if(l[k].morphTargets)for(var p=0;p<l[k].morphTargets.length;p++)f[l[k].morphTargets[p]]=-1;for(var n in f){var t=[],r=[];for(p=0;p!==l[k].morphTargets.length;++p){var q=l[k];t.push(q.time);r.push(q.morphTarget===n?1:0)}d.push(new gc(".morphTargetInfluence["+n+"]",t,r))}f=f.length*(g||1)}else k=".bones["+b[h].name+"]",c(hc,k+".position",l,"pos",d),c(ad,k+".quaternion",l,"rot",d),c(hc,k+".scale",l,"scl",d)}return 0===d.length?
-null:new Ba(e,f,d)}});Object.assign(Ba.prototype,{resetDuration:function(){for(var a=0,b=0,c=this.tracks.length;b!==c;++b){var d=this.tracks[b];a=Math.max(a,d.times[d.times.length-1])}this.duration=a},trim:function(){for(var a=0;a<this.tracks.length;a++)this.tracks[a].trim(0,this.duration);return this},optimize:function(){for(var a=0;a<this.tracks.length;a++)this.tracks[a].optimize();return this}});Object.assign(Md.prototype,{load:function(a,b,c,d){var e=this;(new Ka(e.manager)).load(a,function(a){b(e.parse(JSON.parse(a)))},
-c,d)},setTextures:function(a){this.textures=a},parse:function(a){function b(a){void 0===c[a]&&console.warn("THREE.MaterialLoader: Undefined texture",a);return c[a]}var c=this.textures,d=new Mg[a.type];void 0!==a.uuid&&(d.uuid=a.uuid);void 0!==a.name&&(d.name=a.name);void 0!==a.color&&d.color.setHex(a.color);void 0!==a.roughness&&(d.roughness=a.roughness);void 0!==a.metalness&&(d.metalness=a.metalness);void 0!==a.emissive&&d.emissive.setHex(a.emissive);void 0!==a.specular&&d.specular.setHex(a.specular);
-void 0!==a.shininess&&(d.shininess=a.shininess);void 0!==a.clearCoat&&(d.clearCoat=a.clearCoat);void 0!==a.clearCoatRoughness&&(d.clearCoatRoughness=a.clearCoatRoughness);void 0!==a.uniforms&&(d.uniforms=a.uniforms);void 0!==a.vertexShader&&(d.vertexShader=a.vertexShader);void 0!==a.fragmentShader&&(d.fragmentShader=a.fragmentShader);void 0!==a.vertexColors&&(d.vertexColors=a.vertexColors);void 0!==a.fog&&(d.fog=a.fog);void 0!==a.flatShading&&(d.flatShading=a.flatShading);void 0!==a.blending&&(d.blending=
-a.blending);void 0!==a.side&&(d.side=a.side);void 0!==a.opacity&&(d.opacity=a.opacity);void 0!==a.transparent&&(d.transparent=a.transparent);void 0!==a.alphaTest&&(d.alphaTest=a.alphaTest);void 0!==a.depthTest&&(d.depthTest=a.depthTest);void 0!==a.depthWrite&&(d.depthWrite=a.depthWrite);void 0!==a.colorWrite&&(d.colorWrite=a.colorWrite);void 0!==a.wireframe&&(d.wireframe=a.wireframe);void 0!==a.wireframeLinewidth&&(d.wireframeLinewidth=a.wireframeLinewidth);void 0!==a.wireframeLinecap&&(d.wireframeLinecap=
-a.wireframeLinecap);void 0!==a.wireframeLinejoin&&(d.wireframeLinejoin=a.wireframeLinejoin);void 0!==a.rotation&&(d.rotation=a.rotation);1!==a.linewidth&&(d.linewidth=a.linewidth);void 0!==a.dashSize&&(d.dashSize=a.dashSize);void 0!==a.gapSize&&(d.gapSize=a.gapSize);void 0!==a.scale&&(d.scale=a.scale);void 0!==a.polygonOffset&&(d.polygonOffset=a.polygonOffset);void 0!==a.polygonOffsetFactor&&(d.polygonOffsetFactor=a.polygonOffsetFactor);void 0!==a.polygonOffsetUnits&&(d.polygonOffsetUnits=a.polygonOffsetUnits);
-void 0!==a.skinning&&(d.skinning=a.skinning);void 0!==a.morphTargets&&(d.morphTargets=a.morphTargets);void 0!==a.dithering&&(d.dithering=a.dithering);void 0!==a.visible&&(d.visible=a.visible);void 0!==a.userData&&(d.userData=a.userData);void 0!==a.shading&&(d.flatShading=1===a.shading);void 0!==a.size&&(d.size=a.size);void 0!==a.sizeAttenuation&&(d.sizeAttenuation=a.sizeAttenuation);void 0!==a.map&&(d.map=b(a.map));void 0!==a.alphaMap&&(d.alphaMap=b(a.alphaMap),d.transparent=!0);void 0!==a.bumpMap&&
-(d.bumpMap=b(a.bumpMap));void 0!==a.bumpScale&&(d.bumpScale=a.bumpScale);void 0!==a.normalMap&&(d.normalMap=b(a.normalMap));if(void 0!==a.normalScale){var e=a.normalScale;!1===Array.isArray(e)&&(e=[e,e]);d.normalScale=(new C).fromArray(e)}void 0!==a.displacementMap&&(d.displacementMap=b(a.displacementMap));void 0!==a.displacementScale&&(d.displacementScale=a.displacementScale);void 0!==a.displacementBias&&(d.displacementBias=a.displacementBias);void 0!==a.roughnessMap&&(d.roughnessMap=b(a.roughnessMap));
-void 0!==a.metalnessMap&&(d.metalnessMap=b(a.metalnessMap));void 0!==a.emissiveMap&&(d.emissiveMap=b(a.emissiveMap));void 0!==a.emissiveIntensity&&(d.emissiveIntensity=a.emissiveIntensity);void 0!==a.specularMap&&(d.specularMap=b(a.specularMap));void 0!==a.envMap&&(d.envMap=b(a.envMap));void 0!==a.reflectivity&&(d.reflectivity=a.reflectivity);void 0!==a.lightMap&&(d.lightMap=b(a.lightMap));void 0!==a.lightMapIntensity&&(d.lightMapIntensity=a.lightMapIntensity);void 0!==a.aoMap&&(d.aoMap=b(a.aoMap));
-void 0!==a.aoMapIntensity&&(d.aoMapIntensity=a.aoMapIntensity);void 0!==a.gradientMap&&(d.gradientMap=b(a.gradientMap));return d}});Object.assign(ee.prototype,{load:function(a,b,c,d){var e=this;(new Ka(e.manager)).load(a,function(a){b(e.parse(JSON.parse(a)))},c,d)},parse:function(a){var b=new F,c=a.data.index;void 0!==c&&(c=new uf[c.type](c.array),b.setIndex(new T(c,1)));var d=a.data.attributes;for(f in d){var e=d[f];c=new uf[e.type](e.array);b.addAttribute(f,new T(c,e.itemSize,e.normalized))}var f=
-a.data.groups||a.data.drawcalls||a.data.offsets;if(void 0!==f)for(c=0,d=f.length;c!==d;++c)e=f[c],b.addGroup(e.start,e.count,e.materialIndex);a=a.data.boundingSphere;void 0!==a&&(f=new p,void 0!==a.center&&f.fromArray(a.center),b.boundingSphere=new Ea(f,a.radius));return b}});var uf={Int8Array:Int8Array,Uint8Array:Uint8Array,Uint8ClampedArray:"undefined"!==typeof Uint8ClampedArray?Uint8ClampedArray:Uint8Array,Int16Array:Int16Array,Uint16Array:Uint16Array,Int32Array:Int32Array,Uint32Array:Uint32Array,
-Float32Array:Float32Array,Float64Array:Float64Array};ic.Handlers={handlers:[],add:function(a,b){this.handlers.push(a,b)},get:function(a){for(var b=this.handlers,c=0,d=b.length;c<d;c+=2){var e=b[c+1];if(b[c].test(a))return e}return null}};Object.assign(ic.prototype,{crossOrigin:void 0,onLoadStart:function(){},onLoadProgress:function(){},onLoadComplete:function(){},initMaterials:function(a,b,c){for(var d=[],e=0;e<a.length;++e)d[e]=this.createMaterial(a[e],b,c);return d},createMaterial:function(){var a=
-{NoBlending:0,NormalBlending:1,AdditiveBlending:2,SubtractiveBlending:3,MultiplyBlending:4,CustomBlending:5},b=new I,c=new xd,d=new Md;return function(e,f,g){function h(a,b,d,e,h){a=f+a;var k=ic.Handlers.get(a);null!==k?a=k.load(a):(c.setCrossOrigin(g),a=c.load(a));void 0!==b&&(a.repeat.fromArray(b),1!==b[0]&&(a.wrapS=1E3),1!==b[1]&&(a.wrapT=1E3));void 0!==d&&a.offset.fromArray(d);void 0!==e&&("repeat"===e[0]&&(a.wrapS=1E3),"mirror"===e[0]&&(a.wrapS=1002),"repeat"===e[1]&&(a.wrapT=1E3),"mirror"===
-e[1]&&(a.wrapT=1002));void 0!==h&&(a.anisotropy=h);b=S.generateUUID();l[b]=a;return b}var l={},k={uuid:S.generateUUID(),type:"MeshLambertMaterial"},p;for(p in e){var n=e[p];switch(p){case "DbgColor":case "DbgIndex":case "opticalDensity":case "illumination":break;case "DbgName":k.name=n;break;case "blending":k.blending=a[n];break;case "colorAmbient":case "mapAmbient":console.warn("THREE.Loader.createMaterial:",p,"is no longer supported.");break;case "colorDiffuse":k.color=b.fromArray(n).getHex();break;
-case "colorSpecular":k.specular=b.fromArray(n).getHex();break;case "colorEmissive":k.emissive=b.fromArray(n).getHex();break;case "specularCoef":k.shininess=n;break;case "shading":"basic"===n.toLowerCase()&&(k.type="MeshBasicMaterial");"phong"===n.toLowerCase()&&(k.type="MeshPhongMaterial");"standard"===n.toLowerCase()&&(k.type="MeshStandardMaterial");break;case "mapDiffuse":k.map=h(n,e.mapDiffuseRepeat,e.mapDiffuseOffset,e.mapDiffuseWrap,e.mapDiffuseAnisotropy);break;case "mapDiffuseRepeat":case "mapDiffuseOffset":case "mapDiffuseWrap":case "mapDiffuseAnisotropy":break;
-case "mapEmissive":k.emissiveMap=h(n,e.mapEmissiveRepeat,e.mapEmissiveOffset,e.mapEmissiveWrap,e.mapEmissiveAnisotropy);break;case "mapEmissiveRepeat":case "mapEmissiveOffset":case "mapEmissiveWrap":case "mapEmissiveAnisotropy":break;case "mapLight":k.lightMap=h(n,e.mapLightRepeat,e.mapLightOffset,e.mapLightWrap,e.mapLightAnisotropy);break;case "mapLightRepeat":case "mapLightOffset":case "mapLightWrap":case "mapLightAnisotropy":break;case "mapAO":k.aoMap=h(n,e.mapAORepeat,e.mapAOOffset,e.mapAOWrap,
-e.mapAOAnisotropy);break;case "mapAORepeat":case "mapAOOffset":case "mapAOWrap":case "mapAOAnisotropy":break;case "mapBump":k.bumpMap=h(n,e.mapBumpRepeat,e.mapBumpOffset,e.mapBumpWrap,e.mapBumpAnisotropy);break;case "mapBumpScale":k.bumpScale=n;break;case "mapBumpRepeat":case "mapBumpOffset":case "mapBumpWrap":case "mapBumpAnisotropy":break;case "mapNormal":k.normalMap=h(n,e.mapNormalRepeat,e.mapNormalOffset,e.mapNormalWrap,e.mapNormalAnisotropy);break;case "mapNormalFactor":k.normalScale=n;break;
-case "mapNormalRepeat":case "mapNormalOffset":case "mapNormalWrap":case "mapNormalAnisotropy":break;case "mapSpecular":k.specularMap=h(n,e.mapSpecularRepeat,e.mapSpecularOffset,e.mapSpecularWrap,e.mapSpecularAnisotropy);break;case "mapSpecularRepeat":case "mapSpecularOffset":case "mapSpecularWrap":case "mapSpecularAnisotropy":break;case "mapMetalness":k.metalnessMap=h(n,e.mapMetalnessRepeat,e.mapMetalnessOffset,e.mapMetalnessWrap,e.mapMetalnessAnisotropy);break;case "mapMetalnessRepeat":case "mapMetalnessOffset":case "mapMetalnessWrap":case "mapMetalnessAnisotropy":break;
-case "mapRoughness":k.roughnessMap=h(n,e.mapRoughnessRepeat,e.mapRoughnessOffset,e.mapRoughnessWrap,e.mapRoughnessAnisotropy);break;case "mapRoughnessRepeat":case "mapRoughnessOffset":case "mapRoughnessWrap":case "mapRoughnessAnisotropy":break;case "mapAlpha":k.alphaMap=h(n,e.mapAlphaRepeat,e.mapAlphaOffset,e.mapAlphaWrap,e.mapAlphaAnisotropy);break;case "mapAlphaRepeat":case "mapAlphaOffset":case "mapAlphaWrap":case "mapAlphaAnisotropy":break;case "flipSided":k.side=1;break;case "doubleSided":k.side=
-2;break;case "transparency":console.warn("THREE.Loader.createMaterial: transparency has been renamed to opacity");k.opacity=n;break;case "depthTest":case "depthWrite":case "colorWrite":case "opacity":case "reflectivity":case "transparent":case "visible":case "wireframe":k[p]=n;break;case "vertexColors":!0===n&&(k.vertexColors=2);"face"===n&&(k.vertexColors=1);break;default:console.error("THREE.Loader.createMaterial: Unsupported",p,n)}}"MeshBasicMaterial"===k.type&&delete k.emissive;"MeshPhongMaterial"!==
-k.type&&delete k.specular;1>k.opacity&&(k.transparent=!0);d.setTextures(l);return d.parse(k)}}()});var Be={decodeText:function(a){if("undefined"!==typeof TextDecoder)return(new TextDecoder).decode(a);for(var b="",c=0,d=a.length;c<d;c++)b+=String.fromCharCode(a[c]);return decodeURIComponent(escape(b))},extractUrlBase:function(a){a=a.split("/");if(1===a.length)return"./";a.pop();return a.join("/")+"/"}};Object.assign(fe.prototype,{load:function(a,b,c,d){var e=this,f=this.texturePath&&"string"===typeof this.texturePath?
-this.texturePath:Be.extractUrlBase(a),g=new Ka(this.manager);g.setWithCredentials(this.withCredentials);g.load(a,function(c){c=JSON.parse(c);var d=c.metadata;if(void 0!==d&&(d=d.type,void 0!==d&&"object"===d.toLowerCase())){console.error("THREE.JSONLoader: "+a+" should be loaded with THREE.ObjectLoader instead.");return}c=e.parse(c,f);b(c.geometry,c.materials)},c,d)},setTexturePath:function(a){this.texturePath=a},parse:function(){return function(a,b){void 0!==a.data&&(a=a.data);a.scale=void 0!==a.scale?
-1/a.scale:1;var c=new N,d=a,e,f,g,h=d.faces;var l=d.vertices;var k=d.normals,u=d.colors;var n=d.scale;var t=0;if(void 0!==d.uvs){for(e=0;e<d.uvs.length;e++)d.uvs[e].length&&t++;for(e=0;e<t;e++)c.faceVertexUvs[e]=[]}var r=0;for(g=l.length;r<g;)e=new p,e.x=l[r++]*n,e.y=l[r++]*n,e.z=l[r++]*n,c.vertices.push(e);r=0;for(g=h.length;r<g;){l=h[r++];var q=l&1;var v=l&2;e=l&8;var x=l&16;var y=l&32;n=l&64;l&=128;if(q){q=new Wa;q.a=h[r];q.b=h[r+1];q.c=h[r+3];var w=new Wa;w.a=h[r+1];w.b=h[r+2];w.c=h[r+3];r+=4;
-v&&(v=h[r++],q.materialIndex=v,w.materialIndex=v);v=c.faces.length;if(e)for(e=0;e<t;e++){var B=d.uvs[e];c.faceVertexUvs[e][v]=[];c.faceVertexUvs[e][v+1]=[];for(f=0;4>f;f++){var z=h[r++];var A=B[2*z];z=B[2*z+1];A=new C(A,z);2!==f&&c.faceVertexUvs[e][v].push(A);0!==f&&c.faceVertexUvs[e][v+1].push(A)}}x&&(x=3*h[r++],q.normal.set(k[x++],k[x++],k[x]),w.normal.copy(q.normal));if(y)for(e=0;4>e;e++)x=3*h[r++],y=new p(k[x++],k[x++],k[x]),2!==e&&q.vertexNormals.push(y),0!==e&&w.vertexNormals.push(y);n&&(n=
-h[r++],n=u[n],q.color.setHex(n),w.color.setHex(n));if(l)for(e=0;4>e;e++)n=h[r++],n=u[n],2!==e&&q.vertexColors.push(new I(n)),0!==e&&w.vertexColors.push(new I(n));c.faces.push(q);c.faces.push(w)}else{q=new Wa;q.a=h[r++];q.b=h[r++];q.c=h[r++];v&&(v=h[r++],q.materialIndex=v);v=c.faces.length;if(e)for(e=0;e<t;e++)for(B=d.uvs[e],c.faceVertexUvs[e][v]=[],f=0;3>f;f++)z=h[r++],A=B[2*z],z=B[2*z+1],A=new C(A,z),c.faceVertexUvs[e][v].push(A);x&&(x=3*h[r++],q.normal.set(k[x++],k[x++],k[x]));if(y)for(e=0;3>e;e++)x=
-3*h[r++],y=new p(k[x++],k[x++],k[x]),q.vertexNormals.push(y);n&&(n=h[r++],q.color.setHex(u[n]));if(l)for(e=0;3>e;e++)n=h[r++],q.vertexColors.push(new I(u[n]));c.faces.push(q)}}d=a;r=void 0!==d.influencesPerVertex?d.influencesPerVertex:2;if(d.skinWeights)for(g=0,h=d.skinWeights.length;g<h;g+=r)c.skinWeights.push(new ea(d.skinWeights[g],1<r?d.skinWeights[g+1]:0,2<r?d.skinWeights[g+2]:0,3<r?d.skinWeights[g+3]:0));if(d.skinIndices)for(g=0,h=d.skinIndices.length;g<h;g+=r)c.skinIndices.push(new ea(d.skinIndices[g],
-1<r?d.skinIndices[g+1]:0,2<r?d.skinIndices[g+2]:0,3<r?d.skinIndices[g+3]:0));c.bones=d.bones;c.bones&&0<c.bones.length&&(c.skinWeights.length!==c.skinIndices.length||c.skinIndices.length!==c.vertices.length)&&console.warn("When skinning, number of vertices ("+c.vertices.length+"), skinIndices ("+c.skinIndices.length+"), and skinWeights ("+c.skinWeights.length+") should match.");g=a;h=g.scale;if(void 0!==g.morphTargets)for(d=0,r=g.morphTargets.length;d<r;d++)for(c.morphTargets[d]={},c.morphTargets[d].name=
-g.morphTargets[d].name,c.morphTargets[d].vertices=[],k=c.morphTargets[d].vertices,u=g.morphTargets[d].vertices,t=0,l=u.length;t<l;t+=3)n=new p,n.x=u[t]*h,n.y=u[t+1]*h,n.z=u[t+2]*h,k.push(n);if(void 0!==g.morphColors&&0<g.morphColors.length)for(console.warn('THREE.JSONLoader: "morphColors" no longer supported. Using them as face colors.'),h=c.faces,g=g.morphColors[0].colors,d=0,r=h.length;d<r;d++)h[d].color.fromArray(g,3*d);g=a;d=[];r=[];void 0!==g.animation&&r.push(g.animation);void 0!==g.animations&&
-(g.animations.length?r=r.concat(g.animations):r.push(g.animations));for(g=0;g<r.length;g++)(h=Ba.parseAnimation(r[g],c.bones))&&d.push(h);c.morphTargets&&(r=Ba.CreateClipsFromMorphTargetSequences(c.morphTargets,10),d=d.concat(r));0<d.length&&(c.animations=d);c.computeFaceNormals();c.computeBoundingSphere();if(void 0===a.materials||0===a.materials.length)return{geometry:c};a=ic.prototype.initMaterials(a.materials,b,this.crossOrigin);return{geometry:c,materials:a}}}()});Object.assign(ff.prototype,{load:function(a,
-b,c,d){""===this.texturePath&&(this.texturePath=a.substring(0,a.lastIndexOf("/")+1));var e=this;(new Ka(e.manager)).load(a,function(c){var f=null;try{f=JSON.parse(c)}catch(h){void 0!==d&&d(h);console.error("THREE:ObjectLoader: Can't parse "+a+".",h.message);return}c=f.metadata;void 0===c||void 0===c.type||"geometry"===c.type.toLowerCase()?console.error("THREE.ObjectLoader: Can't load "+a+". Use THREE.JSONLoader instead."):e.parse(f,b)},c,d)},setTexturePath:function(a){this.texturePath=a},setCrossOrigin:function(a){this.crossOrigin=
-a},parse:function(a,b){var c=this.parseShape(a.shapes);c=this.parseGeometries(a.geometries,c);var d=this.parseImages(a.images,function(){void 0!==b&&b(e)});d=this.parseTextures(a.textures,d);d=this.parseMaterials(a.materials,d);var e=this.parseObject(a.object,c,d);a.animations&&(e.animations=this.parseAnimations(a.animations));void 0!==a.images&&0!==a.images.length||void 0===b||b(e);return e},parseShape:function(a){var b={};if(void 0!==a)for(var c=0,d=a.length;c<d;c++){var e=(new gb).fromJSON(a[c]);
-b[e.uuid]=e}return b},parseGeometries:function(a,b){var c={};if(void 0!==a)for(var d=new fe,e=new ee,f=0,g=a.length;f<g;f++){var h=a[f];switch(h.type){case "PlaneGeometry":case "PlaneBufferGeometry":var l=new Ca[h.type](h.width,h.height,h.widthSegments,h.heightSegments);break;case "BoxGeometry":case "BoxBufferGeometry":case "CubeGeometry":l=new Ca[h.type](h.width,h.height,h.depth,h.widthSegments,h.heightSegments,h.depthSegments);break;case "CircleGeometry":case "CircleBufferGeometry":l=new Ca[h.type](h.radius,
-h.segments,h.thetaStart,h.thetaLength);break;case "CylinderGeometry":case "CylinderBufferGeometry":l=new Ca[h.type](h.radiusTop,h.radiusBottom,h.height,h.radialSegments,h.heightSegments,h.openEnded,h.thetaStart,h.thetaLength);break;case "ConeGeometry":case "ConeBufferGeometry":l=new Ca[h.type](h.radius,h.height,h.radialSegments,h.heightSegments,h.openEnded,h.thetaStart,h.thetaLength);break;case "SphereGeometry":case "SphereBufferGeometry":l=new Ca[h.type](h.radius,h.widthSegments,h.heightSegments,
-h.phiStart,h.phiLength,h.thetaStart,h.thetaLength);break;case "DodecahedronGeometry":case "DodecahedronBufferGeometry":case "IcosahedronGeometry":case "IcosahedronBufferGeometry":case "OctahedronGeometry":case "OctahedronBufferGeometry":case "TetrahedronGeometry":case "TetrahedronBufferGeometry":l=new Ca[h.type](h.radius,h.detail);break;case "RingGeometry":case "RingBufferGeometry":l=new Ca[h.type](h.innerRadius,h.outerRadius,h.thetaSegments,h.phiSegments,h.thetaStart,h.thetaLength);break;case "TorusGeometry":case "TorusBufferGeometry":l=
-new Ca[h.type](h.radius,h.tube,h.radialSegments,h.tubularSegments,h.arc);break;case "TorusKnotGeometry":case "TorusKnotBufferGeometry":l=new Ca[h.type](h.radius,h.tube,h.tubularSegments,h.radialSegments,h.p,h.q);break;case "LatheGeometry":case "LatheBufferGeometry":l=new Ca[h.type](h.points,h.segments,h.phiStart,h.phiLength);break;case "PolyhedronGeometry":case "PolyhedronBufferGeometry":l=new Ca[h.type](h.vertices,h.indices,h.radius,h.details);break;case "ShapeGeometry":case "ShapeBufferGeometry":l=
-[];f=0;for(g=h.shapes.length;f<g;f++)l.push(b[h.shapes[f]]);l=new Ca[h.type](l,h.curveSegments);break;case "BufferGeometry":l=e.parse(h);break;case "Geometry":l=d.parse(h,this.texturePath).geometry;break;default:console.warn('THREE.ObjectLoader: Unsupported geometry type "'+h.type+'"');continue}l.uuid=h.uuid;void 0!==h.name&&(l.name=h.name);c[h.uuid]=l}return c},parseMaterials:function(a,b){var c={};if(void 0!==a){var d=new Md;d.setTextures(b);b=0;for(var e=a.length;b<e;b++){var f=a[b];if("MultiMaterial"===
-f.type){for(var g=[],h=0;h<f.materials.length;h++)g.push(d.parse(f.materials[h]));c[f.uuid]=g}else c[f.uuid]=d.parse(f)}}return c},parseAnimations:function(a){for(var b=[],c=0;c<a.length;c++){var d=Ba.parse(a[c]);b.push(d)}return b},parseImages:function(a,b){function c(a){d.manager.itemStart(a);return f.load(a,function(){d.manager.itemEnd(a)},void 0,function(){d.manager.itemEnd(a);d.manager.itemError(a)})}var d=this,e={};if(void 0!==a&&0<a.length){b=new ae(b);var f=new Yc(b);f.setCrossOrigin(this.crossOrigin);
-b=0;for(var g=a.length;b<g;b++){var h=a[b],l=/^(\/\/)|([a-z]+:(\/\/)?)/i.test(h.url)?h.url:d.texturePath+h.url;e[h.uuid]=c(l)}}return e},parseTextures:function(a,b){function c(a,b){if("number"===typeof a)return a;console.warn("THREE.ObjectLoader.parseTexture: Constant should be in numeric form.",a);return b[a]}var d={};if(void 0!==a)for(var e=0,f=a.length;e<f;e++){var g=a[e];void 0===g.image&&console.warn('THREE.ObjectLoader: No "image" specified for',g.uuid);void 0===b[g.image]&&console.warn("THREE.ObjectLoader: Undefined image",
-g.image);var h=new Y(b[g.image]);h.needsUpdate=!0;h.uuid=g.uuid;void 0!==g.name&&(h.name=g.name);void 0!==g.mapping&&(h.mapping=c(g.mapping,Og));void 0!==g.offset&&h.offset.fromArray(g.offset);void 0!==g.repeat&&h.repeat.fromArray(g.repeat);void 0!==g.center&&h.center.fromArray(g.center);void 0!==g.rotation&&(h.rotation=g.rotation);void 0!==g.wrap&&(h.wrapS=c(g.wrap[0],vf),h.wrapT=c(g.wrap[1],vf));void 0!==g.format&&(h.format=g.format);void 0!==g.minFilter&&(h.minFilter=c(g.minFilter,wf));void 0!==
-g.magFilter&&(h.magFilter=c(g.magFilter,wf));void 0!==g.anisotropy&&(h.anisotropy=g.anisotropy);void 0!==g.flipY&&(h.flipY=g.flipY);d[g.uuid]=h}return d},parseObject:function(a,b,c){function d(a){void 0===b[a]&&console.warn("THREE.ObjectLoader: Undefined geometry",a);return b[a]}function e(a){if(void 0!==a){if(Array.isArray(a)){for(var b=[],d=0,e=a.length;d<e;d++){var f=a[d];void 0===c[f]&&console.warn("THREE.ObjectLoader: Undefined material",f);b.push(c[f])}return b}void 0===c[a]&&console.warn("THREE.ObjectLoader: Undefined material",
-a);return c[a]}}switch(a.type){case "Scene":var f=new rd;void 0!==a.background&&Number.isInteger(a.background)&&(f.background=new I(a.background));void 0!==a.fog&&("Fog"===a.fog.type?f.fog=new Pb(a.fog.color,a.fog.near,a.fog.far):"FogExp2"===a.fog.type&&(f.fog=new Ob(a.fog.color,a.fog.density)));break;case "PerspectiveCamera":f=new la(a.fov,a.aspect,a.near,a.far);void 0!==a.focus&&(f.focus=a.focus);void 0!==a.zoom&&(f.zoom=a.zoom);void 0!==a.filmGauge&&(f.filmGauge=a.filmGauge);void 0!==a.filmOffset&&
-(f.filmOffset=a.filmOffset);void 0!==a.view&&(f.view=Object.assign({},a.view));break;case "OrthographicCamera":f=new Jb(a.left,a.right,a.top,a.bottom,a.near,a.far);void 0!==a.zoom&&(f.zoom=a.zoom);void 0!==a.view&&(f.view=Object.assign({},a.view));break;case "AmbientLight":f=new Ed(a.color,a.intensity);break;case "DirectionalLight":f=new Dd(a.color,a.intensity);break;case "PointLight":f=new Bd(a.color,a.intensity,a.distance,a.decay);break;case "RectAreaLight":f=new Fd(a.color,a.intensity,a.width,
-a.height);break;case "SpotLight":f=new Ad(a.color,a.intensity,a.distance,a.angle,a.penumbra,a.decay);break;case "HemisphereLight":f=new yd(a.color,a.groundColor,a.intensity);break;case "SkinnedMesh":console.warn("THREE.ObjectLoader.parseObject() does not support SkinnedMesh yet.");case "Mesh":f=d(a.geometry);var g=e(a.material);f=f.bones&&0<f.bones.length?new td(f,g):new oa(f,g);break;case "LOD":f=new Bc;break;case "Line":f=new ua(d(a.geometry),e(a.material),a.mode);break;case "LineLoop":f=new ud(d(a.geometry),
-e(a.material));break;case "LineSegments":f=new aa(d(a.geometry),e(a.material));break;case "PointCloud":case "Points":f=new Qb(d(a.geometry),e(a.material));break;case "Sprite":f=new Ac(e(a.material));break;case "Group":f=new vd;break;default:f=new A}f.uuid=a.uuid;void 0!==a.name&&(f.name=a.name);void 0!==a.matrix?(f.matrix.fromArray(a.matrix),f.matrix.decompose(f.position,f.quaternion,f.scale)):(void 0!==a.position&&f.position.fromArray(a.position),void 0!==a.rotation&&f.rotation.fromArray(a.rotation),
-void 0!==a.quaternion&&f.quaternion.fromArray(a.quaternion),void 0!==a.scale&&f.scale.fromArray(a.scale));void 0!==a.castShadow&&(f.castShadow=a.castShadow);void 0!==a.receiveShadow&&(f.receiveShadow=a.receiveShadow);a.shadow&&(void 0!==a.shadow.bias&&(f.shadow.bias=a.shadow.bias),void 0!==a.shadow.radius&&(f.shadow.radius=a.shadow.radius),void 0!==a.shadow.mapSize&&f.shadow.mapSize.fromArray(a.shadow.mapSize),void 0!==a.shadow.camera&&(f.shadow.camera=this.parseObject(a.shadow.camera)));void 0!==
-a.visible&&(f.visible=a.visible);void 0!==a.frustumCulled&&(f.frustumCulled=a.frustumCulled);void 0!==a.renderOrder&&(f.renderOrder=a.renderOrder);void 0!==a.userData&&(f.userData=a.userData);if(void 0!==a.children){g=a.children;for(var h=0;h<g.length;h++)f.add(this.parseObject(g[h],b,c))}if("LOD"===a.type)for(a=a.levels,g=0;g<a.length;g++){h=a[g];var l=f.getObjectByProperty("uuid",h.object);void 0!==l&&f.addLevel(l,h.distance)}return f}});var Og={UVMapping:300,CubeReflectionMapping:301,CubeRefractionMapping:302,
-EquirectangularReflectionMapping:303,EquirectangularRefractionMapping:304,SphericalReflectionMapping:305,CubeUVReflectionMapping:306,CubeUVRefractionMapping:307},vf={RepeatWrapping:1E3,ClampToEdgeWrapping:1001,MirroredRepeatWrapping:1002},wf={NearestFilter:1003,NearestMipMapNearestFilter:1004,NearestMipMapLinearFilter:1005,LinearFilter:1006,LinearMipMapNearestFilter:1007,LinearMipMapLinearFilter:1008};ge.prototype={constructor:ge,setOptions:function(a){this.options=a;return this},load:function(a,
-b,c,d){void 0===a&&(a="");void 0!==this.path&&(a=this.path+a);var e=this,f=Hb.get(a);if(void 0!==f)return e.manager.itemStart(a),setTimeout(function(){b&&b(f);e.manager.itemEnd(a)},0),f;fetch(a).then(function(a){return a.blob()}).then(function(a){return createImageBitmap(a,e.options)}).then(function(c){Hb.add(a,c);b&&b(c);e.manager.itemEnd(a)}).catch(function(b){d&&d(b);e.manager.itemEnd(a);e.manager.itemError(a)})},setCrossOrigin:function(){return this},setPath:function(a){this.path=a;return this}};
-Object.assign(he.prototype,{moveTo:function(a,b){this.currentPath=new Pa;this.subPaths.push(this.currentPath);this.currentPath.moveTo(a,b)},lineTo:function(a,b){this.currentPath.lineTo(a,b)},quadraticCurveTo:function(a,b,c,d){this.currentPath.quadraticCurveTo(a,b,c,d)},bezierCurveTo:function(a,b,c,d,e,f){this.currentPath.bezierCurveTo(a,b,c,d,e,f)},splineThru:function(a){this.currentPath.splineThru(a)},toShapes:function(a,b){function c(a){for(var b=[],c=0,d=a.length;c<d;c++){var e=a[c],f=new gb;f.curves=
-e.curves;b.push(f)}return b}function d(a,b){for(var c=b.length,d=!1,e=c-1,f=0;f<c;e=f++){var g=b[e],h=b[f],l=h.x-g.x,k=h.y-g.y;if(Math.abs(k)>Number.EPSILON){if(0>k&&(g=b[f],l=-l,h=b[e],k=-k),!(a.y<g.y||a.y>h.y))if(a.y===g.y){if(a.x===g.x)return!0}else{e=k*(a.x-g.x)-l*(a.y-g.y);if(0===e)return!0;0>e||(d=!d)}}else if(a.y===g.y&&(h.x<=a.x&&a.x<=g.x||g.x<=a.x&&a.x<=h.x))return!0}return d}var e=Xa.isClockWise,f=this.subPaths;if(0===f.length)return[];if(!0===b)return c(f);b=[];if(1===f.length){var g=f[0];
-var h=new gb;h.curves=g.curves;b.push(h);return b}var l=!e(f[0].getPoints());l=a?!l:l;h=[];var k=[],p=[],n=0;k[n]=void 0;p[n]=[];for(var t=0,r=f.length;t<r;t++){g=f[t];var q=g.getPoints();var v=e(q);(v=a?!v:v)?(!l&&k[n]&&n++,k[n]={s:new gb,p:q},k[n].s.curves=g.curves,l&&n++,p[n]=[]):p[n].push({h:g,p:q[0]})}if(!k[0])return c(f);if(1<k.length){t=!1;a=[];e=0;for(f=k.length;e<f;e++)h[e]=[];e=0;for(f=k.length;e<f;e++)for(g=p[e],v=0;v<g.length;v++){l=g[v];n=!0;for(q=0;q<k.length;q++)d(l.p,k[q].p)&&(e!==
-q&&a.push({froms:e,tos:q,hole:v}),n?(n=!1,h[q].push(l)):t=!0);n&&h[e].push(l)}0<a.length&&(t||(p=h))}t=0;for(e=k.length;t<e;t++)for(h=k[t].s,b.push(h),a=p[t],f=0,g=a.length;f<g;f++)h.holes.push(a[f].h);return b}});Object.assign(ie.prototype,{isFont:!0,generateShapes:function(a,b,c){void 0===b&&(b=100);c=[];var d=b;b=this.data;var e=String(a).split("");d/=b.resolution;var f=(b.boundingBox.yMax-b.boundingBox.yMin+b.underlineThickness)*d;a=[];for(var g=0,h=0,l=0;l<e.length;l++){var k=e[l];if("\n"===
-k)g=0,h-=f;else{var p=d;var n=g,t=h;if(k=b.glyphs[k]||b.glyphs["?"]){var r=new he;if(k.o)for(var q=k._cachedOutline||(k._cachedOutline=k.o.split(" ")),v=0,x=q.length;v<x;)switch(q[v++]){case "m":var y=q[v++]*p+n;var w=q[v++]*p+t;r.moveTo(y,w);break;case "l":y=q[v++]*p+n;w=q[v++]*p+t;r.lineTo(y,w);break;case "q":var z=q[v++]*p+n;var A=q[v++]*p+t;var C=q[v++]*p+n;var E=q[v++]*p+t;r.quadraticCurveTo(C,E,z,A);break;case "b":z=q[v++]*p+n,A=q[v++]*p+t,C=q[v++]*p+n,E=q[v++]*p+t,y=q[v++]*p+n,w=q[v++]*p+t,
-r.bezierCurveTo(C,E,y,w,z,A)}p={offsetX:k.ha*p,path:r}}else p=void 0;g+=p.offsetX;a.push(p.path)}}b=0;for(e=a.length;b<e;b++)Array.prototype.push.apply(c,a[b].toShapes());return c}});Object.assign(gf.prototype,{load:function(a,b,c,d){var e=this,f=new Ka(this.manager);f.setPath(this.path);f.load(a,function(a){try{var c=JSON.parse(a)}catch(l){console.warn("THREE.FontLoader: typeface.js support is being deprecated. Use typeface.json instead."),c=JSON.parse(a.substring(65,a.length-2))}a=e.parse(c);b&&
-b(a)},c,d)},parse:function(a){return new ie(a)},setPath:function(a){this.path=a;return this}});var Rd,le={getContext:function(){void 0===Rd&&(Rd=new (window.AudioContext||window.webkitAudioContext));return Rd},setContext:function(a){Rd=a}};Object.assign(je.prototype,{load:function(a,b,c,d){var e=new Ka(this.manager);e.setResponseType("arraybuffer");e.load(a,function(a){le.getContext().decodeAudioData(a,function(a){b(a)})},c,d)}});Object.assign(hf.prototype,{update:function(){var a,b,c,d,e,f,g,h,l=
-new M,k=new M;return function(m){if(a!==this||b!==m.focus||c!==m.fov||d!==m.aspect*this.aspect||e!==m.near||f!==m.far||g!==m.zoom||h!==this.eyeSep){a=this;b=m.focus;c=m.fov;d=m.aspect*this.aspect;e=m.near;f=m.far;g=m.zoom;var n=m.projectionMatrix.clone();h=this.eyeSep/2;var p=h*e/b,r=e*Math.tan(S.DEG2RAD*c*.5)/g;k.elements[12]=-h;l.elements[12]=h;var q=-r*d+p;var u=r*d+p;n.elements[0]=2*e/(u-q);n.elements[8]=(u+q)/(u-q);this.cameraL.projectionMatrix.copy(n);q=-r*d-p;u=r*d-p;n.elements[0]=2*e/(u-q);
-n.elements[8]=(u+q)/(u-q);this.cameraR.projectionMatrix.copy(n)}this.cameraL.matrixWorld.copy(m.matrixWorld).multiply(k);this.cameraR.matrixWorld.copy(m.matrixWorld).multiply(l)}}()});cd.prototype=Object.create(A.prototype);cd.prototype.constructor=cd;ke.prototype=Object.assign(Object.create(A.prototype),{constructor:ke,getInput:function(){return this.gain},removeFilter:function(){null!==this.filter&&(this.gain.disconnect(this.filter),this.filter.disconnect(this.context.destination),this.gain.connect(this.context.destination),
-this.filter=null)},getFilter:function(){return this.filter},setFilter:function(a){null!==this.filter?(this.gain.disconnect(this.filter),this.filter.disconnect(this.context.destination)):this.gain.disconnect(this.context.destination);this.filter=a;this.gain.connect(this.filter);this.filter.connect(this.context.destination)},getMasterVolume:function(){return this.gain.gain.value},setMasterVolume:function(a){this.gain.gain.value=a},updateMatrixWorld:function(){var a=new p,b=new ja,c=new p,d=new p;return function(e){A.prototype.updateMatrixWorld.call(this,
-e);e=this.context.listener;var f=this.up;this.matrixWorld.decompose(a,b,c);d.set(0,0,-1).applyQuaternion(b);e.positionX?(e.positionX.setValueAtTime(a.x,this.context.currentTime),e.positionY.setValueAtTime(a.y,this.context.currentTime),e.positionZ.setValueAtTime(a.z,this.context.currentTime),e.forwardX.setValueAtTime(d.x,this.context.currentTime),e.forwardY.setValueAtTime(d.y,this.context.currentTime),e.forwardZ.setValueAtTime(d.z,this.context.currentTime),e.upX.setValueAtTime(f.x,this.context.currentTime),
-e.upY.setValueAtTime(f.y,this.context.currentTime),e.upZ.setValueAtTime(f.z,this.context.currentTime)):(e.setPosition(a.x,a.y,a.z),e.setOrientation(d.x,d.y,d.z,f.x,f.y,f.z))}}()});jc.prototype=Object.assign(Object.create(A.prototype),{constructor:jc,getOutput:function(){return this.gain},setNodeSource:function(a){this.hasPlaybackControl=!1;this.sourceType="audioNode";this.source=a;this.connect();return this},setBuffer:function(a){this.buffer=a;this.sourceType="buffer";this.autoplay&&this.play();return this},
-play:function(){if(!0===this.isPlaying)console.warn("THREE.Audio: Audio is already playing.");else if(!1===this.hasPlaybackControl)console.warn("THREE.Audio: this Audio has no playback control.");else{var a=this.context.createBufferSource();a.buffer=this.buffer;a.loop=this.loop;a.onended=this.onEnded.bind(this);a.playbackRate.setValueAtTime(this.playbackRate,this.startTime);this.startTime=this.context.currentTime;a.start(this.startTime,this.offset);this.isPlaying=!0;this.source=a;return this.connect()}},
-pause:function(){if(!1===this.hasPlaybackControl)console.warn("THREE.Audio: this Audio has no playback control.");else return!0===this.isPlaying&&(this.source.stop(),this.offset+=(this.context.currentTime-this.startTime)*this.playbackRate,this.isPlaying=!1),this},stop:function(){if(!1===this.hasPlaybackControl)console.warn("THREE.Audio: this Audio has no playback control.");else return this.source.stop(),this.offset=0,this.isPlaying=!1,this},connect:function(){if(0<this.filters.length){this.source.connect(this.filters[0]);
-for(var a=1,b=this.filters.length;a<b;a++)this.filters[a-1].connect(this.filters[a]);this.filters[this.filters.length-1].connect(this.getOutput())}else this.source.connect(this.getOutput());return this},disconnect:function(){if(0<this.filters.length){this.source.disconnect(this.filters[0]);for(var a=1,b=this.filters.length;a<b;a++)this.filters[a-1].disconnect(this.filters[a]);this.filters[this.filters.length-1].disconnect(this.getOutput())}else this.source.disconnect(this.getOutput());return this},
-getFilters:function(){return this.filters},setFilters:function(a){a||(a=[]);!0===this.isPlaying?(this.disconnect(),this.filters=a,this.connect()):this.filters=a;return this},getFilter:function(){return this.getFilters()[0]},setFilter:function(a){return this.setFilters(a?[a]:[])},setPlaybackRate:function(a){if(!1===this.hasPlaybackControl)console.warn("THREE.Audio: this Audio has no playback control.");else return this.playbackRate=a,!0===this.isPlaying&&this.source.playbackRate.setValueAtTime(this.playbackRate,
-this.context.currentTime),this},getPlaybackRate:function(){return this.playbackRate},onEnded:function(){this.isPlaying=!1},getLoop:function(){return!1===this.hasPlaybackControl?(console.warn("THREE.Audio: this Audio has no playback control."),!1):this.loop},setLoop:function(a){if(!1===this.hasPlaybackControl)console.warn("THREE.Audio: this Audio has no playback control.");else return this.loop=a,!0===this.isPlaying&&(this.source.loop=this.loop),this},getVolume:function(){return this.gain.gain.value},
-setVolume:function(a){this.gain.gain.value=a;return this}});me.prototype=Object.assign(Object.create(jc.prototype),{constructor:me,getOutput:function(){return this.panner},getRefDistance:function(){return this.panner.refDistance},setRefDistance:function(a){this.panner.refDistance=a},getRolloffFactor:function(){return this.panner.rolloffFactor},setRolloffFactor:function(a){this.panner.rolloffFactor=a},getDistanceModel:function(){return this.panner.distanceModel},setDistanceModel:function(a){this.panner.distanceModel=
-a},getMaxDistance:function(){return this.panner.maxDistance},setMaxDistance:function(a){this.panner.maxDistance=a},updateMatrixWorld:function(){var a=new p;return function(b){A.prototype.updateMatrixWorld.call(this,b);a.setFromMatrixPosition(this.matrixWorld);this.panner.setPosition(a.x,a.y,a.z)}}()});Object.assign(ne.prototype,{getFrequencyData:function(){this.analyser.getByteFrequencyData(this.data);return this.data},getAverageFrequency:function(){for(var a=0,b=this.getFrequencyData(),c=0;c<b.length;c++)a+=
-b[c];return a/b.length}});Object.assign(oe.prototype,{accumulate:function(a,b){var c=this.buffer,d=this.valueSize;a=a*d+d;var e=this.cumulativeWeight;if(0===e){for(e=0;e!==d;++e)c[a+e]=c[e];e=b}else e+=b,this._mixBufferRegion(c,a,0,b/e,d);this.cumulativeWeight=e},apply:function(a){var b=this.valueSize,c=this.buffer;a=a*b+b;var d=this.cumulativeWeight,e=this.binding;this.cumulativeWeight=0;1>d&&this._mixBufferRegion(c,a,3*b,1-d,b);d=b;for(var f=b+b;d!==f;++d)if(c[d]!==c[d+b]){e.setValue(c,a);break}},
-saveOriginalState:function(){var a=this.buffer,b=this.valueSize,c=3*b;this.binding.getValue(a,c);for(var d=b;d!==c;++d)a[d]=a[c+d%b];this.cumulativeWeight=0},restoreOriginalState:function(){this.binding.setValue(this.buffer,3*this.valueSize)},_select:function(a,b,c,d,e){if(.5<=d)for(d=0;d!==e;++d)a[b+d]=a[c+d]},_slerp:function(a,b,c,d){ja.slerpFlat(a,b,a,b,a,c,d)},_lerp:function(a,b,c,d,e){for(var f=1-d,g=0;g!==e;++g){var h=b+g;a[h]=a[h]*f+a[c+g]*d}}});Object.assign(jf.prototype,{getValue:function(a,
-b){this.bind();var c=this._bindings[this._targetGroup.nCachedObjects_];void 0!==c&&c.getValue(a,b)},setValue:function(a,b){for(var c=this._bindings,d=this._targetGroup.nCachedObjects_,e=c.length;d!==e;++d)c[d].setValue(a,b)},bind:function(){for(var a=this._bindings,b=this._targetGroup.nCachedObjects_,c=a.length;b!==c;++b)a[b].bind()},unbind:function(){for(var a=this._bindings,b=this._targetGroup.nCachedObjects_,c=a.length;b!==c;++b)a[b].unbind()}});Object.assign(qa,{Composite:jf,create:function(a,
-b,c){return a&&a.isAnimationObjectGroup?new qa.Composite(a,b,c):new qa(a,b,c)},sanitizeNodeName:function(){var a=/[\[\]\.:\/]/g;return function(b){return b.replace(/\s/g,"_").replace(a,"")}}(),parseTrackName:function(){var a="[^"+"\\[\\]\\.:\\/".replace("\\.","")+"]",b=/((?:WC+[\/:])*)/.source.replace("WC","[^\\[\\]\\.:\\/]");a=/(WCOD+)?/.source.replace("WCOD",a);var c=/(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace("WC","[^\\[\\]\\.:\\/]"),d=/\.(WC+)(?:\[(.+)\])?/.source.replace("WC","[^\\[\\]\\.:\\/]"),
-e=new RegExp("^"+b+a+c+d+"$"),f=["material","materials","bones"];return function(a){var b=e.exec(a);if(!b)throw Error("PropertyBinding: Cannot parse trackName: "+a);b={nodeName:b[2],objectName:b[3],objectIndex:b[4],propertyName:b[5],propertyIndex:b[6]};var c=b.nodeName&&b.nodeName.lastIndexOf(".");if(void 0!==c&&-1!==c){var d=b.nodeName.substring(c+1);-1!==f.indexOf(d)&&(b.nodeName=b.nodeName.substring(0,c),b.objectName=d)}if(null===b.propertyName||0===b.propertyName.length)throw Error("PropertyBinding: can not parse propertyName from trackName: "+
-a);return b}}(),findNode:function(a,b){if(!b||""===b||"root"===b||"."===b||-1===b||b===a.name||b===a.uuid)return a;if(a.skeleton){var c=a.skeleton.getBoneByName(b);if(void 0!==c)return c}if(a.children){var d=function(a){for(var c=0;c<a.length;c++){var e=a[c];if(e.name===b||e.uuid===b||(e=d(e.children)))return e}return null};if(a=d(a.children))return a}return null}});Object.assign(qa.prototype,{_getValue_unavailable:function(){},_setValue_unavailable:function(){},BindingType:{Direct:0,EntireArray:1,
-ArrayElement:2,HasFromToArray:3},Versioning:{None:0,NeedsUpdate:1,MatrixWorldNeedsUpdate:2},GetterByBindingType:[function(a,b){a[b]=this.node[this.propertyName]},function(a,b){for(var c=this.resolvedProperty,d=0,e=c.length;d!==e;++d)a[b++]=c[d]},function(a,b){a[b]=this.resolvedProperty[this.propertyIndex]},function(a,b){this.resolvedProperty.toArray(a,b)}],SetterByBindingTypeAndVersioning:[[function(a,b){this.targetObject[this.propertyName]=a[b]},function(a,b){this.targetObject[this.propertyName]=
-a[b];this.targetObject.needsUpdate=!0},function(a,b){this.targetObject[this.propertyName]=a[b];this.targetObject.matrixWorldNeedsUpdate=!0}],[function(a,b){for(var c=this.resolvedProperty,d=0,e=c.length;d!==e;++d)c[d]=a[b++]},function(a,b){for(var c=this.resolvedProperty,d=0,e=c.length;d!==e;++d)c[d]=a[b++];this.targetObject.needsUpdate=!0},function(a,b){for(var c=this.resolvedProperty,d=0,e=c.length;d!==e;++d)c[d]=a[b++];this.targetObject.matrixWorldNeedsUpdate=!0}],[function(a,b){this.resolvedProperty[this.propertyIndex]=
-a[b]},function(a,b){this.resolvedProperty[this.propertyIndex]=a[b];this.targetObject.needsUpdate=!0},function(a,b){this.resolvedProperty[this.propertyIndex]=a[b];this.targetObject.matrixWorldNeedsUpdate=!0}],[function(a,b){this.resolvedProperty.fromArray(a,b)},function(a,b){this.resolvedProperty.fromArray(a,b);this.targetObject.needsUpdate=!0},function(a,b){this.resolvedProperty.fromArray(a,b);this.targetObject.matrixWorldNeedsUpdate=!0}]],getValue:function(a,b){this.bind();this.getValue(a,b)},setValue:function(a,
-b){this.bind();this.setValue(a,b)},bind:function(){var a=this.node,b=this.parsedPath,c=b.objectName,d=b.propertyName,e=b.propertyIndex;a||(this.node=a=qa.findNode(this.rootNode,b.nodeName)||this.rootNode);this.getValue=this._getValue_unavailable;this.setValue=this._setValue_unavailable;if(a){if(c){var f=b.objectIndex;switch(c){case "materials":if(!a.material){console.error("THREE.PropertyBinding: Can not bind to material as node does not have a material.",this);return}if(!a.material.materials){console.error("THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.",
-this);return}a=a.material.materials;break;case "bones":if(!a.skeleton){console.error("THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.",this);return}a=a.skeleton.bones;for(c=0;c<a.length;c++)if(a[c].name===f){f=c;break}break;default:if(void 0===a[c]){console.error("THREE.PropertyBinding: Can not bind to objectName of node undefined.",this);return}a=a[c]}if(void 0!==f){if(void 0===a[f]){console.error("THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.",
-this,a);return}a=a[f]}}f=a[d];if(void 0===f)console.error("THREE.PropertyBinding: Trying to update property for track: "+b.nodeName+"."+d+" but it wasn't found.",a);else{b=this.Versioning.None;void 0!==a.needsUpdate?(b=this.Versioning.NeedsUpdate,this.targetObject=a):void 0!==a.matrixWorldNeedsUpdate&&(b=this.Versioning.MatrixWorldNeedsUpdate,this.targetObject=a);c=this.BindingType.Direct;if(void 0!==e){if("morphTargetInfluences"===d){if(!a.geometry){console.error("THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.",
-this);return}if(a.geometry.isBufferGeometry){if(!a.geometry.morphAttributes){console.error("THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.",this);return}for(c=0;c<this.node.geometry.morphAttributes.position.length;c++)if(a.geometry.morphAttributes.position[c].name===e){e=c;break}}else{if(!a.geometry.morphTargets){console.error("THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphTargets.",
-this);return}for(c=0;c<this.node.geometry.morphTargets.length;c++)if(a.geometry.morphTargets[c].name===e){e=c;break}}}c=this.BindingType.ArrayElement;this.resolvedProperty=f;this.propertyIndex=e}else void 0!==f.fromArray&&void 0!==f.toArray?(c=this.BindingType.HasFromToArray,this.resolvedProperty=f):Array.isArray(f)?(c=this.BindingType.EntireArray,this.resolvedProperty=f):this.propertyName=d;this.getValue=this.GetterByBindingType[c];this.setValue=this.SetterByBindingTypeAndVersioning[c][b]}}else console.error("THREE.PropertyBinding: Trying to update node for track: "+
-this.path+" but it wasn't found.")},unbind:function(){this.node=null;this.getValue=this._getValue_unbound;this.setValue=this._setValue_unbound}});Object.assign(qa.prototype,{_getValue_unbound:qa.prototype.getValue,_setValue_unbound:qa.prototype.setValue});Object.assign(kf.prototype,{isAnimationObjectGroup:!0,add:function(){for(var a=this._objects,b=a.length,c=this.nCachedObjects_,d=this._indicesByUUID,e=this._paths,f=this._parsedPaths,g=this._bindings,h=g.length,k=void 0,m=0,p=arguments.length;m!==
-p;++m){var n=arguments[m],t=n.uuid,r=d[t];if(void 0===r){r=b++;d[t]=r;a.push(n);t=0;for(var q=h;t!==q;++t)g[t].push(new qa(n,e[t],f[t]))}else if(r<c){k=a[r];var v=--c;q=a[v];d[q.uuid]=r;a[r]=q;d[t]=v;a[v]=n;t=0;for(q=h;t!==q;++t){var x=g[t],y=x[r];x[r]=x[v];void 0===y&&(y=new qa(n,e[t],f[t]));x[v]=y}}else a[r]!==k&&console.error("THREE.AnimationObjectGroup: Different objects with the same UUID detected. Clean the caches or recreate your infrastructure when reloading scenes.")}this.nCachedObjects_=
-c},remove:function(){for(var a=this._objects,b=this.nCachedObjects_,c=this._indicesByUUID,d=this._bindings,e=d.length,f=0,g=arguments.length;f!==g;++f){var h=arguments[f],k=h.uuid,m=c[k];if(void 0!==m&&m>=b){var p=b++,n=a[p];c[n.uuid]=m;a[m]=n;c[k]=p;a[p]=h;h=0;for(k=e;h!==k;++h){n=d[h];var t=n[m];n[m]=n[p];n[p]=t}}}this.nCachedObjects_=b},uncache:function(){for(var a=this._objects,b=a.length,c=this.nCachedObjects_,d=this._indicesByUUID,e=this._bindings,f=e.length,g=0,h=arguments.length;g!==h;++g){var k=
-arguments[g].uuid,m=d[k];if(void 0!==m)if(delete d[k],m<c){k=--c;var p=a[k],n=--b,t=a[n];d[p.uuid]=m;a[m]=p;d[t.uuid]=k;a[k]=t;a.pop();p=0;for(t=f;p!==t;++p){var r=e[p],q=r[n];r[m]=r[k];r[k]=q;r.pop()}}else for(n=--b,t=a[n],d[t.uuid]=m,a[m]=t,a.pop(),p=0,t=f;p!==t;++p)r=e[p],r[m]=r[n],r.pop()}this.nCachedObjects_=c},subscribe_:function(a,b){var c=this._bindingsIndicesByPath,d=c[a],e=this._bindings;if(void 0!==d)return e[d];var f=this._paths,g=this._parsedPaths,h=this._objects,k=this.nCachedObjects_,
-m=Array(h.length);d=e.length;c[a]=d;f.push(a);g.push(b);e.push(m);c=k;for(d=h.length;c!==d;++c)m[c]=new qa(h[c],a,b);return m},unsubscribe_:function(a){var b=this._bindingsIndicesByPath,c=b[a];if(void 0!==c){var d=this._paths,e=this._parsedPaths,f=this._bindings,g=f.length-1,h=f[g];b[a[g]]=c;f[c]=h;f.pop();e[c]=e[g];e.pop();d[c]=d[g];d.pop()}}});Object.assign(lf.prototype,{play:function(){this._mixer._activateAction(this);return this},stop:function(){this._mixer._deactivateAction(this);return this.reset()},
-reset:function(){this.paused=!1;this.enabled=!0;this.time=0;this._loopCount=-1;this._startTime=null;return this.stopFading().stopWarping()},isRunning:function(){return this.enabled&&!this.paused&&0!==this.timeScale&&null===this._startTime&&this._mixer._isActiveAction(this)},isScheduled:function(){return this._mixer._isActiveAction(this)},startAt:function(a){this._startTime=a;return this},setLoop:function(a,b){this.loop=a;this.repetitions=b;return this},setEffectiveWeight:function(a){this.weight=a;
-this._effectiveWeight=this.enabled?a:0;return this.stopFading()},getEffectiveWeight:function(){return this._effectiveWeight},fadeIn:function(a){return this._scheduleFading(a,0,1)},fadeOut:function(a){return this._scheduleFading(a,1,0)},crossFadeFrom:function(a,b,c){a.fadeOut(b);this.fadeIn(b);if(c){c=this._clip.duration;var d=a._clip.duration,e=c/d;a.warp(1,d/c,b);this.warp(e,1,b)}return this},crossFadeTo:function(a,b,c){return a.crossFadeFrom(this,b,c)},stopFading:function(){var a=this._weightInterpolant;
-null!==a&&(this._weightInterpolant=null,this._mixer._takeBackControlInterpolant(a));return this},setEffectiveTimeScale:function(a){this.timeScale=a;this._effectiveTimeScale=this.paused?0:a;return this.stopWarping()},getEffectiveTimeScale:function(){return this._effectiveTimeScale},setDuration:function(a){this.timeScale=this._clip.duration/a;return this.stopWarping()},syncWith:function(a){this.time=a.time;this.timeScale=a.timeScale;return this.stopWarping()},halt:function(a){return this.warp(this._effectiveTimeScale,
-0,a)},warp:function(a,b,c){var d=this._mixer,e=d.time,f=this._timeScaleInterpolant,g=this.timeScale;null===f&&(this._timeScaleInterpolant=f=d._lendControlInterpolant());d=f.parameterPositions;f=f.sampleValues;d[0]=e;d[1]=e+c;f[0]=a/g;f[1]=b/g;return this},stopWarping:function(){var a=this._timeScaleInterpolant;null!==a&&(this._timeScaleInterpolant=null,this._mixer._takeBackControlInterpolant(a));return this},getMixer:function(){return this._mixer},getClip:function(){return this._clip},getRoot:function(){return this._localRoot||
-this._mixer._root},_update:function(a,b,c,d){if(this.enabled){var e=this._startTime;if(null!==e){b=(a-e)*c;if(0>b||0===c)return;this._startTime=null;b*=c}b*=this._updateTimeScale(a);c=this._updateTime(b);a=this._updateWeight(a);if(0<a){b=this._interpolants;e=this._propertyBindings;for(var f=0,g=b.length;f!==g;++f)b[f].evaluate(c),e[f].accumulate(d,a)}}else this._updateWeight(a)},_updateWeight:function(a){var b=0;if(this.enabled){b=this.weight;var c=this._weightInterpolant;if(null!==c){var d=c.evaluate(a)[0];
-b*=d;a>c.parameterPositions[1]&&(this.stopFading(),0===d&&(this.enabled=!1))}}return this._effectiveWeight=b},_updateTimeScale:function(a){var b=0;if(!this.paused){b=this.timeScale;var c=this._timeScaleInterpolant;if(null!==c){var d=c.evaluate(a)[0];b*=d;a>c.parameterPositions[1]&&(this.stopWarping(),0===b?this.paused=!0:this.timeScale=b)}}return this._effectiveTimeScale=b},_updateTime:function(a){var b=this.time+a;if(0===a)return b;var c=this._clip.duration,d=this.loop,e=this._loopCount;if(2200===
-d)a:{if(-1===e&&(this._loopCount=0,this._setEndings(!0,!0,!1)),b>=c)b=c;else if(0>b)b=0;else break a;this.clampWhenFinished?this.paused=!0:this.enabled=!1;this._mixer.dispatchEvent({type:"finished",action:this,direction:0>a?-1:1})}else{d=2202===d;-1===e&&(0<=a?(e=0,this._setEndings(!0,0===this.repetitions,d)):this._setEndings(0===this.repetitions,!0,d));if(b>=c||0>b){var f=Math.floor(b/c);b-=c*f;e+=Math.abs(f);var g=this.repetitions-e;0>=g?(this.clampWhenFinished?this.paused=!0:this.enabled=!1,b=
-0<a?c:0,this._mixer.dispatchEvent({type:"finished",action:this,direction:0<a?1:-1})):(1===g?(a=0>a,this._setEndings(a,!a,d)):this._setEndings(!1,!1,d),this._loopCount=e,this._mixer.dispatchEvent({type:"loop",action:this,loopDelta:f}))}if(d&&1===(e&1))return this.time=b,c-b}return this.time=b},_setEndings:function(a,b,c){var d=this._interpolantSettings;c?(d.endingStart=2401,d.endingEnd=2401):(d.endingStart=a?this.zeroSlopeAtStart?2401:2400:2402,d.endingEnd=b?this.zeroSlopeAtEnd?2401:2400:2402)},_scheduleFading:function(a,
-b,c){var d=this._mixer,e=d.time,f=this._weightInterpolant;null===f&&(this._weightInterpolant=f=d._lendControlInterpolant());d=f.parameterPositions;f=f.sampleValues;d[0]=e;f[0]=b;d[1]=e+a;f[1]=c;return this}});pe.prototype=Object.assign(Object.create(xa.prototype),{constructor:pe,_bindAction:function(a,b){var c=a._localRoot||this._root,d=a._clip.tracks,e=d.length,f=a._propertyBindings;a=a._interpolants;var g=c.uuid,h=this._bindingsByRootAndName,k=h[g];void 0===k&&(k={},h[g]=k);for(h=0;h!==e;++h){var m=
-d[h],p=m.name,n=k[p];if(void 0===n){n=f[h];if(void 0!==n){null===n._cacheIndex&&(++n.referenceCount,this._addInactiveBinding(n,g,p));continue}n=new oe(qa.create(c,p,b&&b._propertyBindings[h].binding.parsedPath),m.ValueTypeName,m.getValueSize());++n.referenceCount;this._addInactiveBinding(n,g,p)}f[h]=n;a[h].resultBuffer=n.buffer}},_activateAction:function(a){if(!this._isActiveAction(a)){if(null===a._cacheIndex){var b=(a._localRoot||this._root).uuid,c=a._clip.uuid,d=this._actionsByClip[c];this._bindAction(a,
-d&&d.knownActions[0]);this._addInactiveAction(a,c,b)}b=a._propertyBindings;c=0;for(d=b.length;c!==d;++c){var e=b[c];0===e.useCount++&&(this._lendBinding(e),e.saveOriginalState())}this._lendAction(a)}},_deactivateAction:function(a){if(this._isActiveAction(a)){for(var b=a._propertyBindings,c=0,d=b.length;c!==d;++c){var e=b[c];0===--e.useCount&&(e.restoreOriginalState(),this._takeBackBinding(e))}this._takeBackAction(a)}},_initMemoryManager:function(){this._actions=[];this._nActiveActions=0;this._actionsByClip=
-{};this._bindings=[];this._nActiveBindings=0;this._bindingsByRootAndName={};this._controlInterpolants=[];this._nActiveControlInterpolants=0;var a=this;this.stats={actions:{get total(){return a._actions.length},get inUse(){return a._nActiveActions}},bindings:{get total(){return a._bindings.length},get inUse(){return a._nActiveBindings}},controlInterpolants:{get total(){return a._controlInterpolants.length},get inUse(){return a._nActiveControlInterpolants}}}},_isActiveAction:function(a){a=a._cacheIndex;
-return null!==a&&a<this._nActiveActions},_addInactiveAction:function(a,b,c){var d=this._actions,e=this._actionsByClip,f=e[b];void 0===f?(f={knownActions:[a],actionByRoot:{}},a._byClipCacheIndex=0,e[b]=f):(b=f.knownActions,a._byClipCacheIndex=b.length,b.push(a));a._cacheIndex=d.length;d.push(a);f.actionByRoot[c]=a},_removeInactiveAction:function(a){var b=this._actions,c=b[b.length-1],d=a._cacheIndex;c._cacheIndex=d;b[d]=c;b.pop();a._cacheIndex=null;b=a._clip.uuid;c=this._actionsByClip;d=c[b];var e=
-d.knownActions,f=e[e.length-1],g=a._byClipCacheIndex;f._byClipCacheIndex=g;e[g]=f;e.pop();a._byClipCacheIndex=null;delete d.actionByRoot[(a._localRoot||this._root).uuid];0===e.length&&delete c[b];this._removeInactiveBindingsForAction(a)},_removeInactiveBindingsForAction:function(a){a=a._propertyBindings;for(var b=0,c=a.length;b!==c;++b){var d=a[b];0===--d.referenceCount&&this._removeInactiveBinding(d)}},_lendAction:function(a){var b=this._actions,c=a._cacheIndex,d=this._nActiveActions++,e=b[d];a._cacheIndex=
-d;b[d]=a;e._cacheIndex=c;b[c]=e},_takeBackAction:function(a){var b=this._actions,c=a._cacheIndex,d=--this._nActiveActions,e=b[d];a._cacheIndex=d;b[d]=a;e._cacheIndex=c;b[c]=e},_addInactiveBinding:function(a,b,c){var d=this._bindingsByRootAndName,e=d[b],f=this._bindings;void 0===e&&(e={},d[b]=e);e[c]=a;a._cacheIndex=f.length;f.push(a)},_removeInactiveBinding:function(a){var b=this._bindings,c=a.binding,d=c.rootNode.uuid;c=c.path;var e=this._bindingsByRootAndName,f=e[d],g=b[b.length-1];a=a._cacheIndex;
-g._cacheIndex=a;b[a]=g;b.pop();delete f[c];a:{for(var h in f)break a;delete e[d]}},_lendBinding:function(a){var b=this._bindings,c=a._cacheIndex,d=this._nActiveBindings++,e=b[d];a._cacheIndex=d;b[d]=a;e._cacheIndex=c;b[c]=e},_takeBackBinding:function(a){var b=this._bindings,c=a._cacheIndex,d=--this._nActiveBindings,e=b[d];a._cacheIndex=d;b[d]=a;e._cacheIndex=c;b[c]=e},_lendControlInterpolant:function(){var a=this._controlInterpolants,b=this._nActiveControlInterpolants++,c=a[b];void 0===c&&(c=new bd(new Float32Array(2),
-new Float32Array(2),1,this._controlInterpolantsResultBuffer),c.__cacheIndex=b,a[b]=c);return c},_takeBackControlInterpolant:function(a){var b=this._controlInterpolants,c=a.__cacheIndex,d=--this._nActiveControlInterpolants,e=b[d];a.__cacheIndex=d;b[d]=a;e.__cacheIndex=c;b[c]=e},_controlInterpolantsResultBuffer:new Float32Array(1),clipAction:function(a,b){var c=b||this._root,d=c.uuid;c="string"===typeof a?Ba.findByName(c,a):a;a=null!==c?c.uuid:a;var e=this._actionsByClip[a],f=null;if(void 0!==e){f=
-e.actionByRoot[d];if(void 0!==f)return f;f=e.knownActions[0];null===c&&(c=f._clip)}if(null===c)return null;b=new lf(this,c,b);this._bindAction(b,f);this._addInactiveAction(b,a,d);return b},existingAction:function(a,b){var c=b||this._root;b=c.uuid;c="string"===typeof a?Ba.findByName(c,a):a;a=this._actionsByClip[c?c.uuid:a];return void 0!==a?a.actionByRoot[b]||null:null},stopAllAction:function(){for(var a=this._actions,b=this._nActiveActions,c=this._bindings,d=this._nActiveBindings,e=this._nActiveBindings=
-this._nActiveActions=0;e!==b;++e)a[e].reset();for(e=0;e!==d;++e)c[e].useCount=0;return this},update:function(a){a*=this.timeScale;for(var b=this._actions,c=this._nActiveActions,d=this.time+=a,e=Math.sign(a),f=this._accuIndex^=1,g=0;g!==c;++g)b[g]._update(d,a,e,f);a=this._bindings;b=this._nActiveBindings;for(g=0;g!==b;++g)a[g].apply(f);return this},getRoot:function(){return this._root},uncacheClip:function(a){var b=this._actions;a=a.uuid;var c=this._actionsByClip,d=c[a];if(void 0!==d){d=d.knownActions;
-for(var e=0,f=d.length;e!==f;++e){var g=d[e];this._deactivateAction(g);var h=g._cacheIndex,k=b[b.length-1];g._cacheIndex=null;g._byClipCacheIndex=null;k._cacheIndex=h;b[h]=k;b.pop();this._removeInactiveBindingsForAction(g)}delete c[a]}},uncacheRoot:function(a){a=a.uuid;var b=this._actionsByClip;for(d in b){var c=b[d].actionByRoot[a];void 0!==c&&(this._deactivateAction(c),this._removeInactiveAction(c))}var d=this._bindingsByRootAndName[a];if(void 0!==d)for(var e in d)a=d[e],a.restoreOriginalState(),
-this._removeInactiveBinding(a)},uncacheAction:function(a,b){a=this.existingAction(a,b);null!==a&&(this._deactivateAction(a),this._removeInactiveAction(a))}});Nd.prototype.clone=function(){return new Nd(void 0===this.value.clone?this.value:this.value.clone())};qe.prototype=Object.assign(Object.create(F.prototype),{constructor:qe,isInstancedBufferGeometry:!0,copy:function(a){F.prototype.copy.call(this,a);this.maxInstancedCount=a.maxInstancedCount;return this},clone:function(){return(new this.constructor).copy(this)}});
-Object.defineProperties(re.prototype,{count:{get:function(){return this.data.count}},array:{get:function(){return this.data.array}}});Object.assign(re.prototype,{isInterleavedBufferAttribute:!0,setX:function(a,b){this.data.array[a*this.data.stride+this.offset]=b;return this},setY:function(a,b){this.data.array[a*this.data.stride+this.offset+1]=b;return this},setZ:function(a,b){this.data.array[a*this.data.stride+this.offset+2]=b;return this},setW:function(a,b){this.data.array[a*this.data.stride+this.offset+
-3]=b;return this},getX:function(a){return this.data.array[a*this.data.stride+this.offset]},getY:function(a){return this.data.array[a*this.data.stride+this.offset+1]},getZ:function(a){return this.data.array[a*this.data.stride+this.offset+2]},getW:function(a){return this.data.array[a*this.data.stride+this.offset+3]},setXY:function(a,b,c){a=a*this.data.stride+this.offset;this.data.array[a+0]=b;this.data.array[a+1]=c;return this},setXYZ:function(a,b,c,d){a=a*this.data.stride+this.offset;this.data.array[a+
-0]=b;this.data.array[a+1]=c;this.data.array[a+2]=d;return this},setXYZW:function(a,b,c,d,e){a=a*this.data.stride+this.offset;this.data.array[a+0]=b;this.data.array[a+1]=c;this.data.array[a+2]=d;this.data.array[a+3]=e;return this}});Object.defineProperty(kc.prototype,"needsUpdate",{set:function(a){!0===a&&this.version++}});Object.assign(kc.prototype,{isInterleavedBuffer:!0,onUploadCallback:function(){},setArray:function(a){if(Array.isArray(a))throw new TypeError("THREE.BufferAttribute: array should be a Typed Array.");
-this.count=void 0!==a?a.length/this.stride:0;this.array=a},setDynamic:function(a){this.dynamic=a;return this},copy:function(a){this.array=new a.array.constructor(a.array);this.count=a.count;this.stride=a.stride;this.dynamic=a.dynamic;return this},copyAt:function(a,b,c){a*=this.stride;c*=b.stride;for(var d=0,e=this.stride;d<e;d++)this.array[a+d]=b.array[c+d];return this},set:function(a,b){void 0===b&&(b=0);this.array.set(a,b);return this},clone:function(){return(new this.constructor).copy(this)},onUpload:function(a){this.onUploadCallback=
-a;return this}});se.prototype=Object.assign(Object.create(kc.prototype),{constructor:se,isInstancedInterleavedBuffer:!0,copy:function(a){kc.prototype.copy.call(this,a);this.meshPerAttribute=a.meshPerAttribute;return this}});te.prototype=Object.assign(Object.create(T.prototype),{constructor:te,isInstancedBufferAttribute:!0,copy:function(a){T.prototype.copy.call(this,a);this.meshPerAttribute=a.meshPerAttribute;return this}});Object.assign(mf.prototype,{linePrecision:1,set:function(a,b){this.ray.set(a,
-b)},setFromCamera:function(a,b){b&&b.isPerspectiveCamera?(this.ray.origin.setFromMatrixPosition(b.matrixWorld),this.ray.direction.set(a.x,a.y,.5).unproject(b).sub(this.ray.origin).normalize()):b&&b.isOrthographicCamera?(this.ray.origin.set(a.x,a.y,(b.near+b.far)/(b.near-b.far)).unproject(b),this.ray.direction.set(0,0,-1).transformDirection(b.matrixWorld)):console.error("THREE.Raycaster: Unsupported camera type.")},intersectObject:function(a,b,c){c=c||[];ue(a,this,c,b);c.sort(nf);return c},intersectObjects:function(a,
-b,c){c=c||[];if(!1===Array.isArray(a))return console.warn("THREE.Raycaster.intersectObjects: objects is not an Array."),c;for(var d=0,e=a.length;d<e;d++)ue(a[d],this,c,b);c.sort(nf);return c}});Object.assign(of.prototype,{start:function(){this.oldTime=this.startTime=("undefined"===typeof performance?Date:performance).now();this.elapsedTime=0;this.running=!0},stop:function(){this.getElapsedTime();this.autoStart=this.running=!1},getElapsedTime:function(){this.getDelta();return this.elapsedTime},getDelta:function(){var a=
-0;if(this.autoStart&&!this.running)return this.start(),0;if(this.running){var b=("undefined"===typeof performance?Date:performance).now();a=(b-this.oldTime)/1E3;this.oldTime=b;this.elapsedTime+=a}return a}});Object.assign(pf.prototype,{set:function(a,b,c){this.radius=a;this.phi=b;this.theta=c;return this},clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.radius=a.radius;this.phi=a.phi;this.theta=a.theta;return this},makeSafe:function(){this.phi=Math.max(1E-6,Math.min(Math.PI-
-1E-6,this.phi));return this},setFromVector3:function(a){this.radius=a.length();0===this.radius?this.phi=this.theta=0:(this.theta=Math.atan2(a.x,a.z),this.phi=Math.acos(S.clamp(a.y/this.radius,-1,1)));return this}});Object.assign(qf.prototype,{set:function(a,b,c){this.radius=a;this.theta=b;this.y=c;return this},clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.radius=a.radius;this.theta=a.theta;this.y=a.y;return this},setFromVector3:function(a){this.radius=Math.sqrt(a.x*
-a.x+a.z*a.z);this.theta=Math.atan2(a.x,a.z);this.y=a.y;return this}});Object.assign(ve.prototype,{set:function(a,b){this.min.copy(a);this.max.copy(b);return this},setFromPoints:function(a){this.makeEmpty();for(var b=0,c=a.length;b<c;b++)this.expandByPoint(a[b]);return this},setFromCenterAndSize:function(){var a=new C;return function(b,c){c=a.copy(c).multiplyScalar(.5);this.min.copy(b).sub(c);this.max.copy(b).add(c);return this}}(),clone:function(){return(new this.constructor).copy(this)},copy:function(a){this.min.copy(a.min);
-this.max.copy(a.max);return this},makeEmpty:function(){this.min.x=this.min.y=Infinity;this.max.x=this.max.y=-Infinity;return this},isEmpty:function(){return this.max.x<this.min.x||this.max.y<this.min.y},getCenter:function(a){void 0===a&&(console.warn("THREE.Box2: .getCenter() target is now required"),a=new C);return this.isEmpty()?a.set(0,0):a.addVectors(this.min,this.max).multiplyScalar(.5)},getSize:function(a){void 0===a&&(console.warn("THREE.Box2: .getSize() target is now required"),a=new C);return this.isEmpty()?
-a.set(0,0):a.subVectors(this.max,this.min)},expandByPoint:function(a){this.min.min(a);this.max.max(a);return this},expandByVector:function(a){this.min.sub(a);this.max.add(a);return this},expandByScalar:function(a){this.min.addScalar(-a);this.max.addScalar(a);return this},containsPoint:function(a){return a.x<this.min.x||a.x>this.max.x||a.y<this.min.y||a.y>this.max.y?!1:!0},containsBox:function(a){return this.min.x<=a.min.x&&a.max.x<=this.max.x&&this.min.y<=a.min.y&&a.max.y<=this.max.y},getParameter:function(a,
-b){void 0===b&&(console.warn("THREE.Box2: .getParameter() target is now required"),b=new C);return b.set((a.x-this.min.x)/(this.max.x-this.min.x),(a.y-this.min.y)/(this.max.y-this.min.y))},intersectsBox:function(a){return a.max.x<this.min.x||a.min.x>this.max.x||a.max.y<this.min.y||a.min.y>this.max.y?!1:!0},clampPoint:function(a,b){void 0===b&&(console.warn("THREE.Box2: .clampPoint() target is now required"),b=new C);return b.copy(a).clamp(this.min,this.max)},distanceToPoint:function(){var a=new C;
-return function(b){return a.copy(b).clamp(this.min,this.max).sub(b).length()}}(),intersect:function(a){this.min.max(a.min);this.max.min(a.max);return this},union:function(a){this.min.min(a.min);this.max.max(a.max);return this},translate:function(a){this.min.add(a);this.max.add(a);return this},equals:function(a){return a.min.equals(this.min)&&a.max.equals(this.max)}});dd.prototype=Object.create(A.prototype);dd.prototype.constructor=dd;dd.prototype.isImmediateRenderObject=!0;ed.prototype=Object.create(aa.prototype);
-ed.prototype.constructor=ed;ed.prototype.update=function(){var a=new p,b=new p,c=new sa;return function(){var d=["a","b","c"];this.object.updateMatrixWorld(!0);c.getNormalMatrix(this.object.matrixWorld);var e=this.object.matrixWorld,f=this.geometry.attributes.position,g=this.object.geometry;if(g&&g.isGeometry)for(var h=g.vertices,k=g.faces,m=g=0,p=k.length;m<p;m++)for(var n=k[m],t=0,r=n.vertexNormals.length;t<r;t++){var q=n.vertexNormals[t];a.copy(h[n[d[t]]]).applyMatrix4(e);b.copy(q).applyMatrix3(c).normalize().multiplyScalar(this.size).add(a);
-f.setXYZ(g,a.x,a.y,a.z);g+=1;f.setXYZ(g,b.x,b.y,b.z);g+=1}else if(g&&g.isBufferGeometry)for(d=g.attributes.position,h=g.attributes.normal,t=g=0,r=d.count;t<r;t++)a.set(d.getX(t),d.getY(t),d.getZ(t)).applyMatrix4(e),b.set(h.getX(t),h.getY(t),h.getZ(t)),b.applyMatrix3(c).normalize().multiplyScalar(this.size).add(a),f.setXYZ(g,a.x,a.y,a.z),g+=1,f.setXYZ(g,b.x,b.y,b.z),g+=1;f.needsUpdate=!0}}();lc.prototype=Object.create(A.prototype);lc.prototype.constructor=lc;lc.prototype.dispose=function(){this.cone.geometry.dispose();
-this.cone.material.dispose()};lc.prototype.update=function(){var a=new p,b=new p;return function(){this.light.updateMatrixWorld();var c=this.light.distance?this.light.distance:1E3,d=c*Math.tan(this.light.angle);this.cone.scale.set(d,d,c);a.setFromMatrixPosition(this.light.matrixWorld);b.setFromMatrixPosition(this.light.target.matrixWorld);this.cone.lookAt(b.sub(a));void 0!==this.color?this.cone.material.color.set(this.color):this.cone.material.color.copy(this.light.color)}}();mc.prototype=Object.create(aa.prototype);
-mc.prototype.constructor=mc;mc.prototype.updateMatrixWorld=function(){var a=new p,b=new M,c=new M;return function(d){var e=this.bones,f=this.geometry,g=f.getAttribute("position");c.getInverse(this.root.matrixWorld);for(var h=0,k=0;h<e.length;h++){var m=e[h];m.parent&&m.parent.isBone&&(b.multiplyMatrices(c,m.matrixWorld),a.setFromMatrixPosition(b),g.setXYZ(k,a.x,a.y,a.z),b.multiplyMatrices(c,m.parent.matrixWorld),a.setFromMatrixPosition(b),g.setXYZ(k+1,a.x,a.y,a.z),k+=2)}f.getAttribute("position").needsUpdate=
-!0;A.prototype.updateMatrixWorld.call(this,d)}}();nc.prototype=Object.create(oa.prototype);nc.prototype.constructor=nc;nc.prototype.dispose=function(){this.geometry.dispose();this.material.dispose()};nc.prototype.update=function(){void 0!==this.color?this.material.color.set(this.color):this.material.color.copy(this.light.color)};oc.prototype=Object.create(A.prototype);oc.prototype.constructor=oc;oc.prototype.dispose=function(){this.children[0].geometry.dispose();this.children[0].material.dispose()};
-oc.prototype.update=function(){var a=.5*this.light.width,b=.5*this.light.height,c=this.line.geometry.attributes.position,d=c.array;d[0]=a;d[1]=-b;d[2]=0;d[3]=a;d[4]=b;d[5]=0;d[6]=-a;d[7]=b;d[8]=0;d[9]=-a;d[10]=-b;d[11]=0;d[12]=a;d[13]=-b;d[14]=0;c.needsUpdate=!0;void 0!==this.color?this.line.material.color.set(this.color):this.line.material.color.copy(this.light.color)};pc.prototype=Object.create(A.prototype);pc.prototype.constructor=pc;pc.prototype.dispose=function(){this.children[0].geometry.dispose();
-this.children[0].material.dispose()};pc.prototype.update=function(){var a=new p,b=new I,c=new I;return function(){var d=this.children[0];if(void 0!==this.color)this.material.color.set(this.color);else{var e=d.geometry.getAttribute("color");b.copy(this.light.color);c.copy(this.light.groundColor);for(var f=0,g=e.count;f<g;f++){var h=f<g/2?b:c;e.setXYZ(f,h.r,h.g,h.b)}e.needsUpdate=!0}d.lookAt(a.setFromMatrixPosition(this.light.matrixWorld).negate())}}();fd.prototype=Object.create(aa.prototype);fd.prototype.constructor=
-fd;Od.prototype=Object.create(aa.prototype);Od.prototype.constructor=Od;gd.prototype=Object.create(aa.prototype);gd.prototype.constructor=gd;gd.prototype.update=function(){var a=new p,b=new p,c=new sa;return function(){this.object.updateMatrixWorld(!0);c.getNormalMatrix(this.object.matrixWorld);var d=this.object.matrixWorld,e=this.geometry.attributes.position,f=this.object.geometry,g=f.vertices;f=f.faces;for(var h=0,k=0,m=f.length;k<m;k++){var p=f[k],n=p.normal;a.copy(g[p.a]).add(g[p.b]).add(g[p.c]).divideScalar(3).applyMatrix4(d);
-b.copy(n).applyMatrix3(c).normalize().multiplyScalar(this.size).add(a);e.setXYZ(h,a.x,a.y,a.z);h+=1;e.setXYZ(h,b.x,b.y,b.z);h+=1}e.needsUpdate=!0}}();qc.prototype=Object.create(A.prototype);qc.prototype.constructor=qc;qc.prototype.dispose=function(){this.lightPlane.geometry.dispose();this.lightPlane.material.dispose();this.targetLine.geometry.dispose();this.targetLine.material.dispose()};qc.prototype.update=function(){var a=new p,b=new p,c=new p;return function(){a.setFromMatrixPosition(this.light.matrixWorld);
-b.setFromMatrixPosition(this.light.target.matrixWorld);c.subVectors(b,a);this.lightPlane.lookAt(c);void 0!==this.color?(this.lightPlane.material.color.set(this.color),this.targetLine.material.color.set(this.color)):(this.lightPlane.material.color.copy(this.light.color),this.targetLine.material.color.copy(this.light.color));this.targetLine.lookAt(c);this.targetLine.scale.z=c.length()}}();hd.prototype=Object.create(aa.prototype);hd.prototype.constructor=hd;hd.prototype.update=function(){function a(a,
-g,h,k){d.set(g,h,k).unproject(e);a=c[a];if(void 0!==a)for(g=b.getAttribute("position"),h=0,k=a.length;h<k;h++)g.setXYZ(a[h],d.x,d.y,d.z)}var b,c,d=new p,e=new Qa;return function(){b=this.geometry;c=this.pointMap;e.projectionMatrix.copy(this.camera.projectionMatrix);a("c",0,0,-1);a("t",0,0,1);a("n1",-1,-1,-1);a("n2",1,-1,-1);a("n3",-1,1,-1);a("n4",1,1,-1);a("f1",-1,-1,1);a("f2",1,-1,1);a("f3",-1,1,1);a("f4",1,1,1);a("u1",.7,1.1,-1);a("u2",-.7,1.1,-1);a("u3",0,2,-1);a("cf1",-1,0,1);a("cf2",1,0,1);a("cf3",
-0,-1,1);a("cf4",0,1,1);a("cn1",-1,0,-1);a("cn2",1,0,-1);a("cn3",0,-1,-1);a("cn4",0,1,-1);b.getAttribute("position").needsUpdate=!0}}();Fb.prototype=Object.create(aa.prototype);Fb.prototype.constructor=Fb;Fb.prototype.update=function(){var a=new Va;return function(b){void 0!==b&&console.warn("THREE.BoxHelper: .update() has no longer arguments.");void 0!==this.object&&a.setFromObject(this.object);if(!a.isEmpty()){b=a.min;var c=a.max,d=this.geometry.attributes.position,e=d.array;e[0]=c.x;e[1]=c.y;e[2]=
-c.z;e[3]=b.x;e[4]=c.y;e[5]=c.z;e[6]=b.x;e[7]=b.y;e[8]=c.z;e[9]=c.x;e[10]=b.y;e[11]=c.z;e[12]=c.x;e[13]=c.y;e[14]=b.z;e[15]=b.x;e[16]=c.y;e[17]=b.z;e[18]=b.x;e[19]=b.y;e[20]=b.z;e[21]=c.x;e[22]=b.y;e[23]=b.z;d.needsUpdate=!0;this.geometry.computeBoundingSphere()}}}();Fb.prototype.setFromObject=function(a){this.object=a;this.update();return this};id.prototype=Object.create(aa.prototype);id.prototype.constructor=id;id.prototype.updateMatrixWorld=function(a){var b=this.box;b.isEmpty()||(b.getCenter(this.position),
-b.getSize(this.scale),this.scale.multiplyScalar(.5),A.prototype.updateMatrixWorld.call(this,a))};jd.prototype=Object.create(ua.prototype);jd.prototype.constructor=jd;jd.prototype.updateMatrixWorld=function(a){var b=-this.plane.constant;1E-8>Math.abs(b)&&(b=1E-8);this.scale.set(.5*this.size,.5*this.size,b);this.lookAt(this.plane.normal);A.prototype.updateMatrixWorld.call(this,a)};var Pd,we;Gb.prototype=Object.create(A.prototype);Gb.prototype.constructor=Gb;Gb.prototype.setDirection=function(){var a=
-new p,b;return function(c){.99999<c.y?this.quaternion.set(0,0,0,1):-.99999>c.y?this.quaternion.set(1,0,0,0):(a.set(c.z,0,-c.x).normalize(),b=Math.acos(c.y),this.quaternion.setFromAxisAngle(a,b))}}();Gb.prototype.setLength=function(a,b,c){void 0===b&&(b=.2*a);void 0===c&&(c=.2*b);this.line.scale.set(1,Math.max(0,a-b),1);this.line.updateMatrix();this.cone.scale.set(c,b,c);this.cone.position.y=a;this.cone.updateMatrix()};Gb.prototype.setColor=function(a){this.line.material.color.copy(a);this.cone.material.color.copy(a)};
-kd.prototype=Object.create(aa.prototype);kd.prototype.constructor=kd;E.create=function(a,b){console.log("THREE.Curve.create() has been deprecated");a.prototype=Object.create(E.prototype);a.prototype.constructor=a;a.prototype.getPoint=b;return a};Object.assign(Za.prototype,{createPointsGeometry:function(a){console.warn("THREE.CurvePath: .createPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.");a=this.getPoints(a);return this.createGeometry(a)},createSpacedPointsGeometry:function(a){console.warn("THREE.CurvePath: .createSpacedPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.");
-a=this.getSpacedPoints(a);return this.createGeometry(a)},createGeometry:function(a){console.warn("THREE.CurvePath: .createGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.");for(var b=new N,c=0,d=a.length;c<d;c++){var e=a[c];b.vertices.push(new p(e.x,e.y,e.z||0))}return b}});Object.assign(Pa.prototype,{fromPoints:function(a){console.warn("THREE.Path: .fromPoints() has been renamed to .setFromPoints().");this.setFromPoints(a)}});sf.prototype=Object.create(X.prototype);
-tf.prototype=Object.create(X.prototype);xe.prototype=Object.create(X.prototype);Object.assign(xe.prototype,{initFromArray:function(){console.error("THREE.Spline: .initFromArray() has been removed.")},getControlPointsArray:function(){console.error("THREE.Spline: .getControlPointsArray() has been removed.")},reparametrizeByArcLength:function(){console.error("THREE.Spline: .reparametrizeByArcLength() has been removed.")}});fd.prototype.setColors=function(){console.error("THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.")};
-mc.prototype.update=function(){console.error("THREE.SkeletonHelper: update() no longer needs to be called.")};Object.assign(ic.prototype,{extractUrlBase:function(a){console.warn("THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead.");return Be.extractUrlBase(a)}});Object.assign(ve.prototype,{center:function(a){console.warn("THREE.Box2: .center() has been renamed to .getCenter().");return this.getCenter(a)},empty:function(){console.warn("THREE.Box2: .empty() has been renamed to .isEmpty().");
-return this.isEmpty()},isIntersectionBox:function(a){console.warn("THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox().");return this.intersectsBox(a)},size:function(a){console.warn("THREE.Box2: .size() has been renamed to .getSize().");return this.getSize(a)}});Object.assign(Va.prototype,{center:function(a){console.warn("THREE.Box3: .center() has been renamed to .getCenter().");return this.getCenter(a)},empty:function(){console.warn("THREE.Box3: .empty() has been renamed to .isEmpty().");
-return this.isEmpty()},isIntersectionBox:function(a){console.warn("THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox().");return this.intersectsBox(a)},isIntersectionSphere:function(a){console.warn("THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere().");return this.intersectsSphere(a)},size:function(a){console.warn("THREE.Box3: .size() has been renamed to .getSize().");return this.getSize(a)}});Lb.prototype.center=function(a){console.warn("THREE.Line3: .center() has been renamed to .getCenter().");
-return this.getCenter(a)};Object.assign(S,{random16:function(){console.warn("THREE.Math: .random16() has been deprecated. Use Math.random() instead.");return Math.random()},nearestPowerOfTwo:function(a){console.warn("THREE.Math: .nearestPowerOfTwo() has been renamed to .floorPowerOfTwo().");return S.floorPowerOfTwo(a)},nextPowerOfTwo:function(a){console.warn("THREE.Math: .nextPowerOfTwo() has been renamed to .ceilPowerOfTwo().");return S.ceilPowerOfTwo(a)}});Object.assign(sa.prototype,{flattenToArrayOffset:function(a,
-b){console.warn("THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.");return this.toArray(a,b)},multiplyVector3:function(a){console.warn("THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.");return a.applyMatrix3(this)},multiplyVector3Array:function(){console.error("THREE.Matrix3: .multiplyVector3Array() has been removed.")},applyToBuffer:function(a){console.warn("THREE.Matrix3: .applyToBuffer() has been removed. Use matrix.applyToBufferAttribute( attribute ) instead.");
-return this.applyToBufferAttribute(a)},applyToVector3Array:function(){console.error("THREE.Matrix3: .applyToVector3Array() has been removed.")}});Object.assign(M.prototype,{extractPosition:function(a){console.warn("THREE.Matrix4: .extractPosition() has been renamed to .copyPosition().");return this.copyPosition(a)},flattenToArrayOffset:function(a,b){console.warn("THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.");return this.toArray(a,b)},getPosition:function(){var a;
-return function(){void 0===a&&(a=new p);console.warn("THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.");return a.setFromMatrixColumn(this,3)}}(),setRotationFromQuaternion:function(a){console.warn("THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion().");return this.makeRotationFromQuaternion(a)},multiplyToArray:function(){console.warn("THREE.Matrix4: .multiplyToArray() has been removed.")},multiplyVector3:function(a){console.warn("THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead.");
-return a.applyMatrix4(this)},multiplyVector4:function(a){console.warn("THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.");return a.applyMatrix4(this)},multiplyVector3Array:function(){console.error("THREE.Matrix4: .multiplyVector3Array() has been removed.")},rotateAxis:function(a){console.warn("THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead.");a.transformDirection(this)},crossVector:function(a){console.warn("THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead.");
-return a.applyMatrix4(this)},translate:function(){console.error("THREE.Matrix4: .translate() has been removed.")},rotateX:function(){console.error("THREE.Matrix4: .rotateX() has been removed.")},rotateY:function(){console.error("THREE.Matrix4: .rotateY() has been removed.")},rotateZ:function(){console.error("THREE.Matrix4: .rotateZ() has been removed.")},rotateByAxis:function(){console.error("THREE.Matrix4: .rotateByAxis() has been removed.")},applyToBuffer:function(a){console.warn("THREE.Matrix4: .applyToBuffer() has been removed. Use matrix.applyToBufferAttribute( attribute ) instead.");
-return this.applyToBufferAttribute(a)},applyToVector3Array:function(){console.error("THREE.Matrix4: .applyToVector3Array() has been removed.")},makeFrustum:function(a,b,c,d,e,f){console.warn("THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead.");return this.makePerspective(a,b,d,c,e,f)}});Fa.prototype.isIntersectionLine=function(a){console.warn("THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine().");return this.intersectsLine(a)};
-ja.prototype.multiplyVector3=function(a){console.warn("THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.");return a.applyQuaternion(this)};Object.assign(qb.prototype,{isIntersectionBox:function(a){console.warn("THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox().");return this.intersectsBox(a)},isIntersectionPlane:function(a){console.warn("THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane().");return this.intersectsPlane(a)},
-isIntersectionSphere:function(a){console.warn("THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere().");return this.intersectsSphere(a)}});Object.assign(Aa.prototype,{area:function(){console.warn("THREE.Triangle: .area() has been renamed to .getArea().");return this.getArea()},barycoordFromPoint:function(a,b){console.warn("THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().");return this.getBarycoord(a,b)},midpoint:function(a){console.warn("THREE.Triangle: .midpoint() has been renamed to .getMidpoint().");
-return this.getMidpoint(a)},normal:function(a){console.warn("THREE.Triangle: .normal() has been renamed to .getNormal().");return this.getNormal(a)},plane:function(a){console.warn("THREE.Triangle: .plane() has been renamed to .getPlane().");return this.getPlane(a)}});Object.assign(Aa,{barycoordFromPoint:function(a,b,c,d,e){console.warn("THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().");return Aa.getBarycoord(a,b,c,d,e)},normal:function(a,b,c,d){console.warn("THREE.Triangle: .normal() has been renamed to .getNormal().");
-return Aa.getNormal(a,b,c,d)}});Object.assign(gb.prototype,{extractAllPoints:function(a){console.warn("THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead.");return this.extractPoints(a)},extrude:function(a){console.warn("THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead.");return new fb(this,a)},makeGeometry:function(a){console.warn("THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead.");return new vb(this,a)}});Object.assign(C.prototype,
-{fromAttribute:function(a,b,c){console.warn("THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute().");return this.fromBufferAttribute(a,b,c)},distanceToManhattan:function(a){console.warn("THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo().");return this.manhattanDistanceTo(a)},lengthManhattan:function(){console.warn("THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength().");return this.manhattanLength()}});Object.assign(p.prototype,
-{setEulerFromRotationMatrix:function(){console.error("THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.")},setEulerFromQuaternion:function(){console.error("THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.")},getPositionFromMatrix:function(a){console.warn("THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition().");return this.setFromMatrixPosition(a)},getScaleFromMatrix:function(a){console.warn("THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale().");
-return this.setFromMatrixScale(a)},getColumnFromMatrix:function(a,b){console.warn("THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn().");return this.setFromMatrixColumn(b,a)},applyProjection:function(a){console.warn("THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead.");return this.applyMatrix4(a)},fromAttribute:function(a,b,c){console.warn("THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute().");return this.fromBufferAttribute(a,
-b,c)},distanceToManhattan:function(a){console.warn("THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo().");return this.manhattanDistanceTo(a)},lengthManhattan:function(){console.warn("THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength().");return this.manhattanLength()}});Object.assign(ea.prototype,{fromAttribute:function(a,b,c){console.warn("THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute().");return this.fromBufferAttribute(a,
-b,c)},lengthManhattan:function(){console.warn("THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength().");return this.manhattanLength()}});Object.assign(N.prototype,{computeTangents:function(){console.error("THREE.Geometry: .computeTangents() has been removed.")},computeLineDistances:function(){console.error("THREE.Geometry: .computeLineDistances() has been removed. Use THREE.Line.computeLineDistances() instead.")}});Object.assign(A.prototype,{getChildByName:function(a){console.warn("THREE.Object3D: .getChildByName() has been renamed to .getObjectByName().");
-return this.getObjectByName(a)},renderDepth:function(){console.warn("THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.")},translate:function(a,b){console.warn("THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead.");return this.translateOnAxis(b,a)},getWorldRotation:function(){console.error("THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.")}});Object.defineProperties(A.prototype,
-{eulerOrder:{get:function(){console.warn("THREE.Object3D: .eulerOrder is now .rotation.order.");return this.rotation.order},set:function(a){console.warn("THREE.Object3D: .eulerOrder is now .rotation.order.");this.rotation.order=a}},useQuaternion:{get:function(){console.warn("THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.")},set:function(){console.warn("THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.")}}});
-Object.defineProperties(Bc.prototype,{objects:{get:function(){console.warn("THREE.LOD: .objects has been renamed to .levels.");return this.levels}}});Object.defineProperty(Cc.prototype,"useVertexTexture",{get:function(){console.warn("THREE.Skeleton: useVertexTexture has been removed.")},set:function(){console.warn("THREE.Skeleton: useVertexTexture has been removed.")}});Object.defineProperty(E.prototype,"__arcLengthDivisions",{get:function(){console.warn("THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.");
-return this.arcLengthDivisions},set:function(a){console.warn("THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.");this.arcLengthDivisions=a}});la.prototype.setLens=function(a,b){console.warn("THREE.PerspectiveCamera.setLens is deprecated. Use .setFocalLength and .filmGauge for a photographic setup.");void 0!==b&&(this.filmGauge=b);this.setFocalLength(a)};Object.defineProperties(ca.prototype,{onlyShadow:{set:function(){console.warn("THREE.Light: .onlyShadow has been removed.")}},shadowCameraFov:{set:function(a){console.warn("THREE.Light: .shadowCameraFov is now .shadow.camera.fov.");
-this.shadow.camera.fov=a}},shadowCameraLeft:{set:function(a){console.warn("THREE.Light: .shadowCameraLeft is now .shadow.camera.left.");this.shadow.camera.left=a}},shadowCameraRight:{set:function(a){console.warn("THREE.Light: .shadowCameraRight is now .shadow.camera.right.");this.shadow.camera.right=a}},shadowCameraTop:{set:function(a){console.warn("THREE.Light: .shadowCameraTop is now .shadow.camera.top.");this.shadow.camera.top=a}},shadowCameraBottom:{set:function(a){console.warn("THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom.");
-this.shadow.camera.bottom=a}},shadowCameraNear:{set:function(a){console.warn("THREE.Light: .shadowCameraNear is now .shadow.camera.near.");this.shadow.camera.near=a}},shadowCameraFar:{set:function(a){console.warn("THREE.Light: .shadowCameraFar is now .shadow.camera.far.");this.shadow.camera.far=a}},shadowCameraVisible:{set:function(){console.warn("THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.")}},shadowBias:{set:function(a){console.warn("THREE.Light: .shadowBias is now .shadow.bias.");
-this.shadow.bias=a}},shadowDarkness:{set:function(){console.warn("THREE.Light: .shadowDarkness has been removed.")}},shadowMapWidth:{set:function(a){console.warn("THREE.Light: .shadowMapWidth is now .shadow.mapSize.width.");this.shadow.mapSize.width=a}},shadowMapHeight:{set:function(a){console.warn("THREE.Light: .shadowMapHeight is now .shadow.mapSize.height.");this.shadow.mapSize.height=a}}});Object.defineProperties(T.prototype,{length:{get:function(){console.warn("THREE.BufferAttribute: .length has been deprecated. Use .count instead.");
-return this.array.length}},copyIndicesArray:function(){console.error("THREE.BufferAttribute: .copyIndicesArray() has been removed.")}});Object.assign(F.prototype,{addIndex:function(a){console.warn("THREE.BufferGeometry: .addIndex() has been renamed to .setIndex().");this.setIndex(a)},addDrawCall:function(a,b,c){void 0!==c&&console.warn("THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset.");console.warn("THREE.BufferGeometry: .addDrawCall() is now .addGroup().");this.addGroup(a,b)},
-clearDrawCalls:function(){console.warn("THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups().");this.clearGroups()},computeTangents:function(){console.warn("THREE.BufferGeometry: .computeTangents() has been removed.")},computeOffsets:function(){console.warn("THREE.BufferGeometry: .computeOffsets() has been removed.")}});Object.defineProperties(F.prototype,{drawcalls:{get:function(){console.error("THREE.BufferGeometry: .drawcalls has been renamed to .groups.");return this.groups}},offsets:{get:function(){console.warn("THREE.BufferGeometry: .offsets has been renamed to .groups.");
-return this.groups}}});Object.defineProperties(Nd.prototype,{dynamic:{set:function(){console.warn("THREE.Uniform: .dynamic has been removed. Use object.onBeforeRender() instead.")}},onUpdate:{value:function(){console.warn("THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead.");return this}}});Object.defineProperties(O.prototype,{wrapAround:{get:function(){console.warn("THREE.Material: .wrapAround has been removed.")},set:function(){console.warn("THREE.Material: .wrapAround has been removed.")}},
-wrapRGB:{get:function(){console.warn("THREE.Material: .wrapRGB has been removed.");return new I}},shading:{get:function(){console.error("THREE."+this.type+": .shading has been removed. Use the boolean .flatShading instead.")},set:function(a){console.warn("THREE."+this.type+": .shading has been removed. Use the boolean .flatShading instead.");this.flatShading=1===a}}});Object.defineProperties(Ja.prototype,{metal:{get:function(){console.warn("THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead.");
-return!1},set:function(){console.warn("THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead")}}});Object.defineProperties(va.prototype,{derivatives:{get:function(){console.warn("THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives.");return this.extensions.derivatives},set:function(a){console.warn("THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives.");this.extensions.derivatives=a}}});Object.assign(Xd.prototype,
-{getCurrentRenderTarget:function(){console.warn("THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget().");return this.getRenderTarget()},getMaxAnisotropy:function(){console.warn("THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy().");return this.capabilities.getMaxAnisotropy()},getPrecision:function(){console.warn("THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision.");return this.capabilities.precision},resetGLState:function(){console.warn("THREE.WebGLRenderer: .resetGLState() is now .state.reset().");
-return this.state.reset()},supportsFloatTextures:function(){console.warn("THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( 'OES_texture_float' ).");return this.extensions.get("OES_texture_float")},supportsHalfFloatTextures:function(){console.warn("THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( 'OES_texture_half_float' ).");return this.extensions.get("OES_texture_half_float")},supportsStandardDerivatives:function(){console.warn("THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( 'OES_standard_derivatives' ).");
-return this.extensions.get("OES_standard_derivatives")},supportsCompressedTextureS3TC:function(){console.warn("THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( 'WEBGL_compressed_texture_s3tc' ).");return this.extensions.get("WEBGL_compressed_texture_s3tc")},supportsCompressedTexturePVRTC:function(){console.warn("THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( 'WEBGL_compressed_texture_pvrtc' ).");return this.extensions.get("WEBGL_compressed_texture_pvrtc")},
-supportsBlendMinMax:function(){console.warn("THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( 'EXT_blend_minmax' ).");return this.extensions.get("EXT_blend_minmax")},supportsVertexTextures:function(){console.warn("THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures.");return this.capabilities.vertexTextures},supportsInstancedArrays:function(){console.warn("THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( 'ANGLE_instanced_arrays' ).");
-return this.extensions.get("ANGLE_instanced_arrays")},enableScissorTest:function(a){console.warn("THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest().");this.setScissorTest(a)},initMaterial:function(){console.warn("THREE.WebGLRenderer: .initMaterial() has been removed.")},addPrePlugin:function(){console.warn("THREE.WebGLRenderer: .addPrePlugin() has been removed.")},addPostPlugin:function(){console.warn("THREE.WebGLRenderer: .addPostPlugin() has been removed.")},updateShadowMap:function(){console.warn("THREE.WebGLRenderer: .updateShadowMap() has been removed.")},
-setFaceCulling:function(){console.warn("THREE.WebGLRenderer: .setFaceCulling() has been removed.")}});Object.defineProperties(Xd.prototype,{shadowMapEnabled:{get:function(){return this.shadowMap.enabled},set:function(a){console.warn("THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled.");this.shadowMap.enabled=a}},shadowMapType:{get:function(){return this.shadowMap.type},set:function(a){console.warn("THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type.");this.shadowMap.type=a}},
-shadowMapCullFace:{get:function(){console.warn("THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.")},set:function(){console.warn("THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.")}}});Object.defineProperties(Ue.prototype,{cullFace:{get:function(){console.warn("THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.")},set:function(){console.warn("THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.")}},
-renderReverseSided:{get:function(){console.warn("THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.")},set:function(){console.warn("THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.")}},renderSingleSided:{get:function(){console.warn("THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.")},set:function(){console.warn("THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.")}}});
-Object.defineProperties(hb.prototype,{wrapS:{get:function(){console.warn("THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.");return this.texture.wrapS},set:function(a){console.warn("THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.");this.texture.wrapS=a}},wrapT:{get:function(){console.warn("THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.");return this.texture.wrapT},set:function(a){console.warn("THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.");this.texture.wrapT=a}},magFilter:{get:function(){console.warn("THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.");
-return this.texture.magFilter},set:function(a){console.warn("THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.");this.texture.magFilter=a}},minFilter:{get:function(){console.warn("THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.");return this.texture.minFilter},set:function(a){console.warn("THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.");this.texture.minFilter=a}},anisotropy:{get:function(){console.warn("THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.");
-return this.texture.anisotropy},set:function(a){console.warn("THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.");this.texture.anisotropy=a}},offset:{get:function(){console.warn("THREE.WebGLRenderTarget: .offset is now .texture.offset.");return this.texture.offset},set:function(a){console.warn("THREE.WebGLRenderTarget: .offset is now .texture.offset.");this.texture.offset=a}},repeat:{get:function(){console.warn("THREE.WebGLRenderTarget: .repeat is now .texture.repeat.");return this.texture.repeat},
-set:function(a){console.warn("THREE.WebGLRenderTarget: .repeat is now .texture.repeat.");this.texture.repeat=a}},format:{get:function(){console.warn("THREE.WebGLRenderTarget: .format is now .texture.format.");return this.texture.format},set:function(a){console.warn("THREE.WebGLRenderTarget: .format is now .texture.format.");this.texture.format=a}},type:{get:function(){console.warn("THREE.WebGLRenderTarget: .type is now .texture.type.");return this.texture.type},set:function(a){console.warn("THREE.WebGLRenderTarget: .type is now .texture.type.");
-this.texture.type=a}},generateMipmaps:{get:function(){console.warn("THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.");return this.texture.generateMipmaps},set:function(a){console.warn("THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.");this.texture.generateMipmaps=a}}});Object.defineProperties(We.prototype,{standing:{set:function(){console.warn("THREE.WebVRManager: .standing has been removed.")}}});jc.prototype.load=function(a){console.warn("THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.");
-var b=this;(new je).load(a,function(a){b.setBuffer(a)});return this};ne.prototype.getData=function(){console.warn("THREE.AudioAnalyser: .getData() is now .getFrequencyData().");return this.getFrequencyData()};cd.prototype.updateCubeMap=function(a,b){console.warn("THREE.CubeCamera: .updateCubeMap() is now .update().");return this.update(a,b)};k.WebGLRenderTargetCube=Ib;k.WebGLRenderTarget=hb;k.WebGLRenderer=Xd;k.ShaderLib=rb;k.UniformsLib=L;k.UniformsUtils=Da;k.ShaderChunk=V;k.FogExp2=Ob;k.Fog=Pb;
-k.Scene=rd;k.Sprite=Ac;k.LOD=Bc;k.SkinnedMesh=td;k.Skeleton=Cc;k.Bone=sd;k.Mesh=oa;k.LineSegments=aa;k.LineLoop=ud;k.Line=ua;k.Points=Qb;k.Group=vd;k.VideoTexture=Yd;k.DataTexture=ib;k.CompressedTexture=Rb;k.CubeTexture=ab;k.CanvasTexture=zc;k.DepthTexture=Dc;k.Texture=Y;k.CompressedTextureLoader=df;k.DataTextureLoader=be;k.CubeTextureLoader=ce;k.TextureLoader=xd;k.ObjectLoader=ff;k.MaterialLoader=Md;k.BufferGeometryLoader=ee;k.DefaultLoadingManager=ma;k.LoadingManager=ae;k.JSONLoader=fe;k.ImageLoader=
-Yc;k.ImageBitmapLoader=ge;k.FontLoader=gf;k.FileLoader=Ka;k.Loader=ic;k.LoaderUtils=Be;k.Cache=Hb;k.AudioLoader=je;k.SpotLightShadow=zd;k.SpotLight=Ad;k.PointLight=Bd;k.RectAreaLight=Fd;k.HemisphereLight=yd;k.DirectionalLightShadow=Cd;k.DirectionalLight=Dd;k.AmbientLight=Ed;k.LightShadow=Eb;k.Light=ca;k.StereoCamera=hf;k.PerspectiveCamera=la;k.OrthographicCamera=Jb;k.CubeCamera=cd;k.ArrayCamera=qd;k.Camera=Qa;k.AudioListener=ke;k.PositionalAudio=me;k.AudioContext=le;k.AudioAnalyser=ne;k.Audio=jc;
-k.VectorKeyframeTrack=hc;k.StringKeyframeTrack=Gd;k.QuaternionKeyframeTrack=ad;k.NumberKeyframeTrack=gc;k.ColorKeyframeTrack=Jd;k.BooleanKeyframeTrack=Hd;k.PropertyMixer=oe;k.PropertyBinding=qa;k.KeyframeTrack=da;k.AnimationUtils=fa;k.AnimationObjectGroup=kf;k.AnimationMixer=pe;k.AnimationClip=Ba;k.Uniform=Nd;k.InstancedBufferGeometry=qe;k.BufferGeometry=F;k.Geometry=N;k.InterleavedBufferAttribute=re;k.InstancedInterleavedBuffer=se;k.InterleavedBuffer=kc;k.InstancedBufferAttribute=te;k.Face3=Wa;k.Object3D=
-A;k.Raycaster=mf;k.Layers=Sd;k.EventDispatcher=xa;k.Clock=of;k.QuaternionLinearInterpolant=Id;k.LinearInterpolant=bd;k.DiscreteInterpolant=Ld;k.CubicInterpolant=Kd;k.Interpolant=na;k.Triangle=Aa;k.Math=S;k.Spherical=pf;k.Cylindrical=qf;k.Plane=Fa;k.Frustum=ld;k.Sphere=Ea;k.Ray=qb;k.Matrix4=M;k.Matrix3=sa;k.Box3=Va;k.Box2=ve;k.Line3=Lb;k.Euler=jb;k.Vector4=ea;k.Vector3=p;k.Vector2=C;k.Quaternion=ja;k.Color=I;k.ImmediateRenderObject=dd;k.VertexNormalsHelper=ed;k.SpotLightHelper=lc;k.SkeletonHelper=
-mc;k.PointLightHelper=nc;k.RectAreaLightHelper=oc;k.HemisphereLightHelper=pc;k.GridHelper=fd;k.PolarGridHelper=Od;k.FaceNormalsHelper=gd;k.DirectionalLightHelper=qc;k.CameraHelper=hd;k.BoxHelper=Fb;k.Box3Helper=id;k.PlaneHelper=jd;k.ArrowHelper=Gb;k.AxesHelper=kd;k.Shape=gb;k.Path=Pa;k.ShapePath=he;k.Font=ie;k.CurvePath=Za;k.Curve=E;k.ShapeUtils=Xa;k.WebGLUtils=Ve;k.WireframeGeometry=Sb;k.ParametricGeometry=Ec;k.ParametricBufferGeometry=Tb;k.TetrahedronGeometry=Gc;k.TetrahedronBufferGeometry=Ub;k.OctahedronGeometry=
-Hc;k.OctahedronBufferGeometry=sb;k.IcosahedronGeometry=Ic;k.IcosahedronBufferGeometry=Vb;k.DodecahedronGeometry=Jc;k.DodecahedronBufferGeometry=Wb;k.PolyhedronGeometry=Fc;k.PolyhedronBufferGeometry=pa;k.TubeGeometry=Kc;k.TubeBufferGeometry=Xb;k.TorusKnotGeometry=Lc;k.TorusKnotBufferGeometry=Yb;k.TorusGeometry=Mc;k.TorusBufferGeometry=Zb;k.TextGeometry=Rc;k.TextBufferGeometry=$b;k.SphereGeometry=Sc;k.SphereBufferGeometry=ub;k.RingGeometry=Tc;k.RingBufferGeometry=ac;k.PlaneGeometry=xc;k.PlaneBufferGeometry=
-pb;k.LatheGeometry=Uc;k.LatheBufferGeometry=bc;k.ShapeGeometry=vb;k.ShapeBufferGeometry=wb;k.ExtrudeGeometry=fb;k.ExtrudeBufferGeometry=Ia;k.EdgesGeometry=cc;k.ConeGeometry=Vc;k.ConeBufferGeometry=Wc;k.CylinderGeometry=xb;k.CylinderBufferGeometry=Ya;k.CircleGeometry=Xc;k.CircleBufferGeometry=dc;k.BoxGeometry=Kb;k.BoxBufferGeometry=mb;k.ShadowMaterial=yb;k.SpriteMaterial=eb;k.RawShaderMaterial=ec;k.ShaderMaterial=va;k.PointsMaterial=Ha;k.MeshPhysicalMaterial=zb;k.MeshStandardMaterial=Sa;k.MeshPhongMaterial=
-Ja;k.MeshToonMaterial=Ab;k.MeshNormalMaterial=Bb;k.MeshLambertMaterial=Cb;k.MeshDepthMaterial=cb;k.MeshDistanceMaterial=db;k.MeshBasicMaterial=za;k.LineDashedMaterial=Db;k.LineBasicMaterial=U;k.Material=O;k.Float64BufferAttribute=wc;k.Float32BufferAttribute=z;k.Uint32BufferAttribute=lb;k.Int32BufferAttribute=vc;k.Uint16BufferAttribute=kb;k.Int16BufferAttribute=uc;k.Uint8ClampedBufferAttribute=tc;k.Uint8BufferAttribute=sc;k.Int8BufferAttribute=rc;k.BufferAttribute=T;k.ArcCurve=fc;k.CatmullRomCurve3=
-X;k.CubicBezierCurve=La;k.CubicBezierCurve3=Ta;k.EllipseCurve=ia;k.LineCurve=wa;k.LineCurve3=Ma;k.QuadraticBezierCurve=Na;k.QuadraticBezierCurve3=Ua;k.SplineCurve=Oa;k.REVISION="91";k.MOUSE={LEFT:0,MIDDLE:1,RIGHT:2};k.CullFaceNone=0;k.CullFaceBack=1;k.CullFaceFront=2;k.CullFaceFrontBack=3;k.FrontFaceDirectionCW=0;k.FrontFaceDirectionCCW=1;k.BasicShadowMap=0;k.PCFShadowMap=1;k.PCFSoftShadowMap=2;k.FrontSide=0;k.BackSide=1;k.DoubleSide=2;k.FlatShading=1;k.SmoothShading=2;k.NoColors=0;k.FaceColors=1;
-k.VertexColors=2;k.NoBlending=0;k.NormalBlending=1;k.AdditiveBlending=2;k.SubtractiveBlending=3;k.MultiplyBlending=4;k.CustomBlending=5;k.AddEquation=100;k.SubtractEquation=101;k.ReverseSubtractEquation=102;k.MinEquation=103;k.MaxEquation=104;k.ZeroFactor=200;k.OneFactor=201;k.SrcColorFactor=202;k.OneMinusSrcColorFactor=203;k.SrcAlphaFactor=204;k.OneMinusSrcAlphaFactor=205;k.DstAlphaFactor=206;k.OneMinusDstAlphaFactor=207;k.DstColorFactor=208;k.OneMinusDstColorFactor=209;k.SrcAlphaSaturateFactor=
-210;k.NeverDepth=0;k.AlwaysDepth=1;k.LessDepth=2;k.LessEqualDepth=3;k.EqualDepth=4;k.GreaterEqualDepth=5;k.GreaterDepth=6;k.NotEqualDepth=7;k.MultiplyOperation=0;k.MixOperation=1;k.AddOperation=2;k.NoToneMapping=0;k.LinearToneMapping=1;k.ReinhardToneMapping=2;k.Uncharted2ToneMapping=3;k.CineonToneMapping=4;k.UVMapping=300;k.CubeReflectionMapping=301;k.CubeRefractionMapping=302;k.EquirectangularReflectionMapping=303;k.EquirectangularRefractionMapping=304;k.SphericalReflectionMapping=305;k.CubeUVReflectionMapping=
-306;k.CubeUVRefractionMapping=307;k.RepeatWrapping=1E3;k.ClampToEdgeWrapping=1001;k.MirroredRepeatWrapping=1002;k.NearestFilter=1003;k.NearestMipMapNearestFilter=1004;k.NearestMipMapLinearFilter=1005;k.LinearFilter=1006;k.LinearMipMapNearestFilter=1007;k.LinearMipMapLinearFilter=1008;k.UnsignedByteType=1009;k.ByteType=1010;k.ShortType=1011;k.UnsignedShortType=1012;k.IntType=1013;k.UnsignedIntType=1014;k.FloatType=1015;k.HalfFloatType=1016;k.UnsignedShort4444Type=1017;k.UnsignedShort5551Type=1018;
-k.UnsignedShort565Type=1019;k.UnsignedInt248Type=1020;k.AlphaFormat=1021;k.RGBFormat=1022;k.RGBAFormat=1023;k.LuminanceFormat=1024;k.LuminanceAlphaFormat=1025;k.RGBEFormat=1023;k.DepthFormat=1026;k.DepthStencilFormat=1027;k.RGB_S3TC_DXT1_Format=33776;k.RGBA_S3TC_DXT1_Format=33777;k.RGBA_S3TC_DXT3_Format=33778;k.RGBA_S3TC_DXT5_Format=33779;k.RGB_PVRTC_4BPPV1_Format=35840;k.RGB_PVRTC_2BPPV1_Format=35841;k.RGBA_PVRTC_4BPPV1_Format=35842;k.RGBA_PVRTC_2BPPV1_Format=35843;k.RGB_ETC1_Format=36196;k.RGBA_ASTC_4x4_Format=
-37808;k.RGBA_ASTC_5x4_Format=37809;k.RGBA_ASTC_5x5_Format=37810;k.RGBA_ASTC_6x5_Format=37811;k.RGBA_ASTC_6x6_Format=37812;k.RGBA_ASTC_8x5_Format=37813;k.RGBA_ASTC_8x6_Format=37814;k.RGBA_ASTC_8x8_Format=37815;k.RGBA_ASTC_10x5_Format=37816;k.RGBA_ASTC_10x6_Format=37817;k.RGBA_ASTC_10x8_Format=37818;k.RGBA_ASTC_10x10_Format=37819;k.RGBA_ASTC_12x10_Format=37820;k.RGBA_ASTC_12x12_Format=37821;k.LoopOnce=2200;k.LoopRepeat=2201;k.LoopPingPong=2202;k.InterpolateDiscrete=2300;k.InterpolateLinear=2301;k.InterpolateSmooth=
-2302;k.ZeroCurvatureEnding=2400;k.ZeroSlopeEnding=2401;k.WrapAroundEnding=2402;k.TrianglesDrawMode=0;k.TriangleStripDrawMode=1;k.TriangleFanDrawMode=2;k.LinearEncoding=3E3;k.sRGBEncoding=3001;k.GammaEncoding=3007;k.RGBEEncoding=3002;k.LogLuvEncoding=3003;k.RGBM7Encoding=3004;k.RGBM16Encoding=3005;k.RGBDEncoding=3006;k.BasicDepthPacking=3200;k.RGBADepthPacking=3201;k.CubeGeometry=Kb;k.Face4=function(a,b,c,d,e,f,g){console.warn("THREE.Face4 has been removed. A THREE.Face3 will be created instead.");
-return new Wa(a,b,c,e,f,g)};k.LineStrip=0;k.LinePieces=1;k.MeshFaceMaterial=function(a){console.warn("THREE.MeshFaceMaterial has been removed. Use an Array instead.");return a};k.MultiMaterial=function(a){void 0===a&&(a=[]);console.warn("THREE.MultiMaterial has been removed. Use an Array instead.");a.isMultiMaterial=!0;a.materials=a;a.clone=function(){return a.slice()};return a};k.PointCloud=function(a,b){console.warn("THREE.PointCloud has been renamed to THREE.Points.");return new Qb(a,b)};k.Particle=
-function(a){console.warn("THREE.Particle has been renamed to THREE.Sprite.");return new Ac(a)};k.ParticleSystem=function(a,b){console.warn("THREE.ParticleSystem has been renamed to THREE.Points.");return new Qb(a,b)};k.PointCloudMaterial=function(a){console.warn("THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial.");return new Ha(a)};k.ParticleBasicMaterial=function(a){console.warn("THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial.");return new Ha(a)};k.ParticleSystemMaterial=
-function(a){console.warn("THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial.");return new Ha(a)};k.Vertex=function(a,b,c){console.warn("THREE.Vertex has been removed. Use THREE.Vector3 instead.");return new p(a,b,c)};k.DynamicBufferAttribute=function(a,b){console.warn("THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setDynamic( true ) instead.");return(new T(a,b)).setDynamic(!0)};k.Int8Attribute=function(a,b){console.warn("THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead.");
-return new rc(a,b)};k.Uint8Attribute=function(a,b){console.warn("THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead.");return new sc(a,b)};k.Uint8ClampedAttribute=function(a,b){console.warn("THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead.");return new tc(a,b)};k.Int16Attribute=function(a,b){console.warn("THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead.");return new uc(a,b)};k.Uint16Attribute=
-function(a,b){console.warn("THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead.");return new kb(a,b)};k.Int32Attribute=function(a,b){console.warn("THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead.");return new vc(a,b)};k.Uint32Attribute=function(a,b){console.warn("THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead.");return new lb(a,b)};k.Float32Attribute=function(a,b){console.warn("THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead.");
-return new z(a,b)};k.Float64Attribute=function(a,b){console.warn("THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead.");return new wc(a,b)};k.ClosedSplineCurve3=sf;k.SplineCurve3=tf;k.Spline=xe;k.AxisHelper=function(a){console.warn("THREE.AxisHelper has been renamed to THREE.AxesHelper.");return new kd(a)};k.BoundingBoxHelper=function(a,b){console.warn("THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead.");return new Fb(a,b)};k.EdgesHelper=
-function(a,b){console.warn("THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead.");return new aa(new cc(a.geometry),new U({color:void 0!==b?b:16777215}))};k.WireframeHelper=function(a,b){console.warn("THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead.");return new aa(new Sb(a.geometry),new U({color:void 0!==b?b:16777215}))};k.XHRLoader=function(a){console.warn("THREE.XHRLoader has been renamed to THREE.FileLoader.");return new Ka(a)};k.BinaryTextureLoader=
-function(a){console.warn("THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader.");return new be(a)};k.GeometryUtils={merge:function(a,b,c){console.warn("THREE.GeometryUtils: .merge() has been moved to Geometry. Use geometry.merge( geometry2, matrix, materialIndexOffset ) instead.");if(b.isMesh){b.matrixAutoUpdate&&b.updateMatrix();var d=b.matrix;b=b.geometry}a.merge(b,d,c)},center:function(a){console.warn("THREE.GeometryUtils: .center() has been moved to Geometry. Use geometry.center() instead.");
-return a.center()}};k.ImageUtils={crossOrigin:void 0,loadTexture:function(a,b,c,d){console.warn("THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.");var e=new xd;e.setCrossOrigin(this.crossOrigin);a=e.load(a,c,void 0,d);b&&(a.mapping=b);return a},loadTextureCube:function(a,b,c,d){console.warn("THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.");var e=new ce;e.setCrossOrigin(this.crossOrigin);a=e.load(a,c,void 0,d);b&&(a.mapping=
-b);return a},loadCompressedTexture:function(){console.error("THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.")},loadCompressedTextureCube:function(){console.error("THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.")}};k.Projector=function(){console.error("THREE.Projector has been moved to /examples/js/renderers/Projector.js.");this.projectVector=function(a,b){console.warn("THREE.Projector: .projectVector() is now vector.project().");
-a.project(b)};this.unprojectVector=function(a,b){console.warn("THREE.Projector: .unprojectVector() is now vector.unproject().");a.unproject(b)};this.pickingRay=function(){console.error("THREE.Projector: .pickingRay() is now raycaster.setFromCamera().")}};k.CanvasRenderer=function(){console.error("THREE.CanvasRenderer has been moved to /examples/js/renderers/CanvasRenderer.js");this.domElement=document.createElementNS("http://www.w3.org/1999/xhtml","canvas");this.clear=function(){};this.render=function(){};
-this.setClearColor=function(){};this.setSize=function(){}};k.SceneUtils={createMultiMaterialObject:function(){console.error("THREE.SceneUtils has been moved to /examples/js/utils/SceneUtils.js")},detach:function(){console.error("THREE.SceneUtils has been moved to /examples/js/utils/SceneUtils.js")},attach:function(){console.error("THREE.SceneUtils has been moved to /examples/js/utils/SceneUtils.js")}};k.LensFlare=function(){console.error("THREE.LensFlare has been moved to /examples/js/objects/Lensflare.js")};
-Object.defineProperty(k,"__esModule",{value:!0})});
+/**
+ * @license
+ * Copyright 2010-2021 Three.js Authors
+ * SPDX-License-Identifier: MIT
+ */
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self).THREE={})}(this,(function(t){"use strict";const e="130",n=100,i=300,r=301,s=302,a=303,o=304,l=306,c=307,h=1e3,u=1001,d=1002,p=1003,m=1004,f=1005,g=1006,v=1007,y=1008,x=1009,_=1012,b=1014,M=1015,w=1016,S=1020,T=1022,E=1023,A=1026,L=1027,R=33776,C=33777,P=33778,D=33779,I=35840,N=35841,B=35842,z=35843,F=37492,O=37496,H=2300,U=2301,G=2302,k=2400,V=2401,W=2402,j=2500,q=2501,X=3e3,Y=3001,J=3007,Z=3002,Q=3004,K=3005,$=3006,tt=7680,et=35044,nt=35048,it="300 es";class rt{addEventListener(t,e){void 0===this._listeners&&(this._listeners={});const n=this._listeners;void 0===n[t]&&(n[t]=[]),-1===n[t].indexOf(e)&&n[t].push(e)}hasEventListener(t,e){if(void 0===this._listeners)return!1;const n=this._listeners;return void 0!==n[t]&&-1!==n[t].indexOf(e)}removeEventListener(t,e){if(void 0===this._listeners)return;const n=this._listeners[t];if(void 0!==n){const t=n.indexOf(e);-1!==t&&n.splice(t,1)}}dispatchEvent(t){if(void 0===this._listeners)return;const e=this._listeners[t.type];if(void 0!==e){t.target=this;const n=e.slice(0);for(let e=0,i=n.length;e<i;e++)n[e].call(this,t);t.target=null}}}const st=[];for(let t=0;t<256;t++)st[t]=(t<16?"0":"")+t.toString(16);let at=1234567;const ot=Math.PI/180,lt=180/Math.PI;function ct(){const t=4294967295*Math.random()|0,e=4294967295*Math.random()|0,n=4294967295*Math.random()|0,i=4294967295*Math.random()|0;return(st[255&t]+st[t>>8&255]+st[t>>16&255]+st[t>>24&255]+"-"+st[255&e]+st[e>>8&255]+"-"+st[e>>16&15|64]+st[e>>24&255]+"-"+st[63&n|128]+st[n>>8&255]+"-"+st[n>>16&255]+st[n>>24&255]+st[255&i]+st[i>>8&255]+st[i>>16&255]+st[i>>24&255]).toUpperCase()}function ht(t,e,n){return Math.max(e,Math.min(n,t))}function ut(t,e){return(t%e+e)%e}function dt(t,e,n){return(1-n)*t+n*e}function pt(t){return 0==(t&t-1)&&0!==t}function mt(t){return Math.pow(2,Math.ceil(Math.log(t)/Math.LN2))}function ft(t){return Math.pow(2,Math.floor(Math.log(t)/Math.LN2))}var gt=Object.freeze({__proto__:null,DEG2RAD:ot,RAD2DEG:lt,generateUUID:ct,clamp:ht,euclideanModulo:ut,mapLinear:function(t,e,n,i,r){return i+(t-e)*(r-i)/(n-e)},inverseLerp:function(t,e,n){return t!==e?(n-t)/(e-t):0},lerp:dt,damp:function(t,e,n,i){return dt(t,e,1-Math.exp(-n*i))},pingpong:function(t,e=1){return e-Math.abs(ut(t,2*e)-e)},smoothstep:function(t,e,n){return t<=e?0:t>=n?1:(t=(t-e)/(n-e))*t*(3-2*t)},smootherstep:function(t,e,n){return t<=e?0:t>=n?1:(t=(t-e)/(n-e))*t*t*(t*(6*t-15)+10)},randInt:function(t,e){return t+Math.floor(Math.random()*(e-t+1))},randFloat:function(t,e){return t+Math.random()*(e-t)},randFloatSpread:function(t){return t*(.5-Math.random())},seededRandom:function(t){return void 0!==t&&(at=t%2147483647),at=16807*at%2147483647,(at-1)/2147483646},degToRad:function(t){return t*ot},radToDeg:function(t){return t*lt},isPowerOfTwo:pt,ceilPowerOfTwo:mt,floorPowerOfTwo:ft,setQuaternionFromProperEuler:function(t,e,n,i,r){const s=Math.cos,a=Math.sin,o=s(n/2),l=a(n/2),c=s((e+i)/2),h=a((e+i)/2),u=s((e-i)/2),d=a((e-i)/2),p=s((i-e)/2),m=a((i-e)/2);switch(r){case"XYX":t.set(o*h,l*u,l*d,o*c);break;case"YZY":t.set(l*d,o*h,l*u,o*c);break;case"ZXZ":t.set(l*u,l*d,o*h,o*c);break;case"XZX":t.set(o*h,l*m,l*p,o*c);break;case"YXY":t.set(l*p,o*h,l*m,o*c);break;case"ZYZ":t.set(l*m,l*p,o*h,o*c);break;default:console.warn("THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: "+r)}}});class vt{constructor(t=0,e=0){this.x=t,this.y=e}get width(){return this.x}set width(t){this.x=t}get height(){return this.y}set height(t){this.y=t}set(t,e){return this.x=t,this.y=e,this}setScalar(t){return this.x=t,this.y=t,this}setX(t){return this.x=t,this}setY(t){return this.y=t,this}setComponent(t,e){switch(t){case 0:this.x=e;break;case 1:this.y=e;break;default:throw new Error("index is out of range: "+t)}return this}getComponent(t){switch(t){case 0:return this.x;case 1:return this.y;default:throw new Error("index is out of range: "+t)}}clone(){return new this.constructor(this.x,this.y)}copy(t){return this.x=t.x,this.y=t.y,this}add(t,e){return void 0!==e?(console.warn("THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead."),this.addVectors(t,e)):(this.x+=t.x,this.y+=t.y,this)}addScalar(t){return this.x+=t,this.y+=t,this}addVectors(t,e){return this.x=t.x+e.x,this.y=t.y+e.y,this}addScaledVector(t,e){return this.x+=t.x*e,this.y+=t.y*e,this}sub(t,e){return void 0!==e?(console.warn("THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead."),this.subVectors(t,e)):(this.x-=t.x,this.y-=t.y,this)}subScalar(t){return this.x-=t,this.y-=t,this}subVectors(t,e){return this.x=t.x-e.x,this.y=t.y-e.y,this}multiply(t){return this.x*=t.x,this.y*=t.y,this}multiplyScalar(t){return this.x*=t,this.y*=t,this}divide(t){return this.x/=t.x,this.y/=t.y,this}divideScalar(t){return this.multiplyScalar(1/t)}applyMatrix3(t){const e=this.x,n=this.y,i=t.elements;return this.x=i[0]*e+i[3]*n+i[6],this.y=i[1]*e+i[4]*n+i[7],this}min(t){return this.x=Math.min(this.x,t.x),this.y=Math.min(this.y,t.y),this}max(t){return this.x=Math.max(this.x,t.x),this.y=Math.max(this.y,t.y),this}clamp(t,e){return this.x=Math.max(t.x,Math.min(e.x,this.x)),this.y=Math.max(t.y,Math.min(e.y,this.y)),this}clampScalar(t,e){return this.x=Math.max(t,Math.min(e,this.x)),this.y=Math.max(t,Math.min(e,this.y)),this}clampLength(t,e){const n=this.length();return this.divideScalar(n||1).multiplyScalar(Math.max(t,Math.min(e,n)))}floor(){return this.x=Math.floor(this.x),this.y=Math.floor(this.y),this}ceil(){return this.x=Math.ceil(this.x),this.y=Math.ceil(this.y),this}round(){return this.x=Math.round(this.x),this.y=Math.round(this.y),this}roundToZero(){return this.x=this.x<0?Math.ceil(this.x):Math.floor(this.x),this.y=this.y<0?Math.ceil(this.y):Math.floor(this.y),this}negate(){return this.x=-this.x,this.y=-this.y,this}dot(t){return this.x*t.x+this.y*t.y}cross(t){return this.x*t.y-this.y*t.x}lengthSq(){return this.x*this.x+this.y*this.y}length(){return Math.sqrt(this.x*this.x+this.y*this.y)}manhattanLength(){return Math.abs(this.x)+Math.abs(this.y)}normalize(){return this.divideScalar(this.length()||1)}angle(){return Math.atan2(-this.y,-this.x)+Math.PI}distanceTo(t){return Math.sqrt(this.distanceToSquared(t))}distanceToSquared(t){const e=this.x-t.x,n=this.y-t.y;return e*e+n*n}manhattanDistanceTo(t){return Math.abs(this.x-t.x)+Math.abs(this.y-t.y)}setLength(t){return this.normalize().multiplyScalar(t)}lerp(t,e){return this.x+=(t.x-this.x)*e,this.y+=(t.y-this.y)*e,this}lerpVectors(t,e,n){return this.x=t.x+(e.x-t.x)*n,this.y=t.y+(e.y-t.y)*n,this}equals(t){return t.x===this.x&&t.y===this.y}fromArray(t,e=0){return this.x=t[e],this.y=t[e+1],this}toArray(t=[],e=0){return t[e]=this.x,t[e+1]=this.y,t}fromBufferAttribute(t,e,n){return void 0!==n&&console.warn("THREE.Vector2: offset has been removed from .fromBufferAttribute()."),this.x=t.getX(e),this.y=t.getY(e),this}rotateAround(t,e){const n=Math.cos(e),i=Math.sin(e),r=this.x-t.x,s=this.y-t.y;return this.x=r*n-s*i+t.x,this.y=r*i+s*n+t.y,this}random(){return this.x=Math.random(),this.y=Math.random(),this}}vt.prototype.isVector2=!0;class yt{constructor(){this.elements=[1,0,0,0,1,0,0,0,1],arguments.length>0&&console.error("THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.")}set(t,e,n,i,r,s,a,o,l){const c=this.elements;return c[0]=t,c[1]=i,c[2]=a,c[3]=e,c[4]=r,c[5]=o,c[6]=n,c[7]=s,c[8]=l,this}identity(){return this.set(1,0,0,0,1,0,0,0,1),this}copy(t){const e=this.elements,n=t.elements;return e[0]=n[0],e[1]=n[1],e[2]=n[2],e[3]=n[3],e[4]=n[4],e[5]=n[5],e[6]=n[6],e[7]=n[7],e[8]=n[8],this}extractBasis(t,e,n){return t.setFromMatrix3Column(this,0),e.setFromMatrix3Column(this,1),n.setFromMatrix3Column(this,2),this}setFromMatrix4(t){const e=t.elements;return this.set(e[0],e[4],e[8],e[1],e[5],e[9],e[2],e[6],e[10]),this}multiply(t){return this.multiplyMatrices(this,t)}premultiply(t){return this.multiplyMatrices(t,this)}multiplyMatrices(t,e){const n=t.elements,i=e.elements,r=this.elements,s=n[0],a=n[3],o=n[6],l=n[1],c=n[4],h=n[7],u=n[2],d=n[5],p=n[8],m=i[0],f=i[3],g=i[6],v=i[1],y=i[4],x=i[7],_=i[2],b=i[5],M=i[8];return r[0]=s*m+a*v+o*_,r[3]=s*f+a*y+o*b,r[6]=s*g+a*x+o*M,r[1]=l*m+c*v+h*_,r[4]=l*f+c*y+h*b,r[7]=l*g+c*x+h*M,r[2]=u*m+d*v+p*_,r[5]=u*f+d*y+p*b,r[8]=u*g+d*x+p*M,this}multiplyScalar(t){const e=this.elements;return e[0]*=t,e[3]*=t,e[6]*=t,e[1]*=t,e[4]*=t,e[7]*=t,e[2]*=t,e[5]*=t,e[8]*=t,this}determinant(){const t=this.elements,e=t[0],n=t[1],i=t[2],r=t[3],s=t[4],a=t[5],o=t[6],l=t[7],c=t[8];return e*s*c-e*a*l-n*r*c+n*a*o+i*r*l-i*s*o}invert(){const t=this.elements,e=t[0],n=t[1],i=t[2],r=t[3],s=t[4],a=t[5],o=t[6],l=t[7],c=t[8],h=c*s-a*l,u=a*o-c*r,d=l*r-s*o,p=e*h+n*u+i*d;if(0===p)return this.set(0,0,0,0,0,0,0,0,0);const m=1/p;return t[0]=h*m,t[1]=(i*l-c*n)*m,t[2]=(a*n-i*s)*m,t[3]=u*m,t[4]=(c*e-i*o)*m,t[5]=(i*r-a*e)*m,t[6]=d*m,t[7]=(n*o-l*e)*m,t[8]=(s*e-n*r)*m,this}transpose(){let t;const e=this.elements;return t=e[1],e[1]=e[3],e[3]=t,t=e[2],e[2]=e[6],e[6]=t,t=e[5],e[5]=e[7],e[7]=t,this}getNormalMatrix(t){return this.setFromMatrix4(t).invert().transpose()}transposeIntoArray(t){const e=this.elements;return t[0]=e[0],t[1]=e[3],t[2]=e[6],t[3]=e[1],t[4]=e[4],t[5]=e[7],t[6]=e[2],t[7]=e[5],t[8]=e[8],this}setUvTransform(t,e,n,i,r,s,a){const o=Math.cos(r),l=Math.sin(r);return this.set(n*o,n*l,-n*(o*s+l*a)+s+t,-i*l,i*o,-i*(-l*s+o*a)+a+e,0,0,1),this}scale(t,e){const n=this.elements;return n[0]*=t,n[3]*=t,n[6]*=t,n[1]*=e,n[4]*=e,n[7]*=e,this}rotate(t){const e=Math.cos(t),n=Math.sin(t),i=this.elements,r=i[0],s=i[3],a=i[6],o=i[1],l=i[4],c=i[7];return i[0]=e*r+n*o,i[3]=e*s+n*l,i[6]=e*a+n*c,i[1]=-n*r+e*o,i[4]=-n*s+e*l,i[7]=-n*a+e*c,this}translate(t,e){const n=this.elements;return n[0]+=t*n[2],n[3]+=t*n[5],n[6]+=t*n[8],n[1]+=e*n[2],n[4]+=e*n[5],n[7]+=e*n[8],this}equals(t){const e=this.elements,n=t.elements;for(let t=0;t<9;t++)if(e[t]!==n[t])return!1;return!0}fromArray(t,e=0){for(let n=0;n<9;n++)this.elements[n]=t[n+e];return this}toArray(t=[],e=0){const n=this.elements;return t[e]=n[0],t[e+1]=n[1],t[e+2]=n[2],t[e+3]=n[3],t[e+4]=n[4],t[e+5]=n[5],t[e+6]=n[6],t[e+7]=n[7],t[e+8]=n[8],t}clone(){return(new this.constructor).fromArray(this.elements)}}let xt;yt.prototype.isMatrix3=!0;class _t{static getDataURL(t){if(/^data:/i.test(t.src))return t.src;if("undefined"==typeof HTMLCanvasElement)return t.src;let e;if(t instanceof HTMLCanvasElement)e=t;else{void 0===xt&&(xt=document.createElementNS("http://www.w3.org/1999/xhtml","canvas")),xt.width=t.width,xt.height=t.height;const n=xt.getContext("2d");t instanceof ImageData?n.putImageData(t,0,0):n.drawImage(t,0,0,t.width,t.height),e=xt}return e.width>2048||e.height>2048?(console.warn("THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons",t),e.toDataURL("image/jpeg",.6)):e.toDataURL("image/png")}}let bt=0;class Mt extends rt{constructor(t=Mt.DEFAULT_IMAGE,e=Mt.DEFAULT_MAPPING,n=1001,i=1001,r=1006,s=1008,a=1023,o=1009,l=1,c=3e3){super(),Object.defineProperty(this,"id",{value:bt++}),this.uuid=ct(),this.name="",this.image=t,this.mipmaps=[],this.mapping=e,this.wrapS=n,this.wrapT=i,this.magFilter=r,this.minFilter=s,this.anisotropy=l,this.format=a,this.internalFormat=null,this.type=o,this.offset=new vt(0,0),this.repeat=new vt(1,1),this.center=new vt(0,0),this.rotation=0,this.matrixAutoUpdate=!0,this.matrix=new yt,this.generateMipmaps=!0,this.premultiplyAlpha=!1,this.flipY=!0,this.unpackAlignment=4,this.encoding=c,this.version=0,this.onUpdate=null}updateMatrix(){this.matrix.setUvTransform(this.offset.x,this.offset.y,this.repeat.x,this.repeat.y,this.rotation,this.center.x,this.center.y)}clone(){return(new this.constructor).copy(this)}copy(t){return this.name=t.name,this.image=t.image,this.mipmaps=t.mipmaps.slice(0),this.mapping=t.mapping,this.wrapS=t.wrapS,this.wrapT=t.wrapT,this.magFilter=t.magFilter,this.minFilter=t.minFilter,this.anisotropy=t.anisotropy,this.format=t.format,this.internalFormat=t.internalFormat,this.type=t.type,this.offset.copy(t.offset),this.repeat.copy(t.repeat),this.center.copy(t.center),this.rotation=t.rotation,this.matrixAutoUpdate=t.matrixAutoUpdate,this.matrix.copy(t.matrix),this.generateMipmaps=t.generateMipmaps,this.premultiplyAlpha=t.premultiplyAlpha,this.flipY=t.flipY,this.unpackAlignment=t.unpackAlignment,this.encoding=t.encoding,this}toJSON(t){const e=void 0===t||"string"==typeof t;if(!e&&void 0!==t.textures[this.uuid])return t.textures[this.uuid];const n={metadata:{version:4.5,type:"Texture",generator:"Texture.toJSON"},uuid:this.uuid,name:this.name,mapping:this.mapping,repeat:[this.repeat.x,this.repeat.y],offset:[this.offset.x,this.offset.y],center:[this.center.x,this.center.y],rotation:this.rotation,wrap:[this.wrapS,this.wrapT],format:this.format,type:this.type,encoding:this.encoding,minFilter:this.minFilter,magFilter:this.magFilter,anisotropy:this.anisotropy,flipY:this.flipY,premultiplyAlpha:this.premultiplyAlpha,unpackAlignment:this.unpackAlignment};if(void 0!==this.image){const i=this.image;if(void 0===i.uuid&&(i.uuid=ct()),!e&&void 0===t.images[i.uuid]){let e;if(Array.isArray(i)){e=[];for(let t=0,n=i.length;t<n;t++)i[t].isDataTexture?e.push(wt(i[t].image)):e.push(wt(i[t]))}else e=wt(i);t.images[i.uuid]={uuid:i.uuid,url:e}}n.image=i.uuid}return e||(t.textures[this.uuid]=n),n}dispose(){this.dispatchEvent({type:"dispose"})}transformUv(t){if(this.mapping!==i)return t;if(t.applyMatrix3(this.matrix),t.x<0||t.x>1)switch(this.wrapS){case h:t.x=t.x-Math.floor(t.x);break;case u:t.x=t.x<0?0:1;break;case d:1===Math.abs(Math.floor(t.x)%2)?t.x=Math.ceil(t.x)-t.x:t.x=t.x-Math.floor(t.x)}if(t.y<0||t.y>1)switch(this.wrapT){case h:t.y=t.y-Math.floor(t.y);break;case u:t.y=t.y<0?0:1;break;case d:1===Math.abs(Math.floor(t.y)%2)?t.y=Math.ceil(t.y)-t.y:t.y=t.y-Math.floor(t.y)}return this.flipY&&(t.y=1-t.y),t}set needsUpdate(t){!0===t&&this.version++}}function wt(t){return"undefined"!=typeof HTMLImageElement&&t instanceof HTMLImageElement||"undefined"!=typeof HTMLCanvasElement&&t instanceof HTMLCanvasElement||"undefined"!=typeof ImageBitmap&&t instanceof ImageBitmap?_t.getDataURL(t):t.data?{data:Array.prototype.slice.call(t.data),width:t.width,height:t.height,type:t.data.constructor.name}:(console.warn("THREE.Texture: Unable to serialize Texture."),{})}Mt.DEFAULT_IMAGE=void 0,Mt.DEFAULT_MAPPING=i,Mt.prototype.isTexture=!0;class St{constructor(t=0,e=0,n=0,i=1){this.x=t,this.y=e,this.z=n,this.w=i}get width(){return this.z}set width(t){this.z=t}get height(){return this.w}set height(t){this.w=t}set(t,e,n,i){return this.x=t,this.y=e,this.z=n,this.w=i,this}setScalar(t){return this.x=t,this.y=t,this.z=t,this.w=t,this}setX(t){return this.x=t,this}setY(t){return this.y=t,this}setZ(t){return this.z=t,this}setW(t){return this.w=t,this}setComponent(t,e){switch(t){case 0:this.x=e;break;case 1:this.y=e;break;case 2:this.z=e;break;case 3:this.w=e;break;default:throw new Error("index is out of range: "+t)}return this}getComponent(t){switch(t){case 0:return this.x;case 1:return this.y;case 2:return this.z;case 3:return this.w;default:throw new Error("index is out of range: "+t)}}clone(){return new this.constructor(this.x,this.y,this.z,this.w)}copy(t){return this.x=t.x,this.y=t.y,this.z=t.z,this.w=void 0!==t.w?t.w:1,this}add(t,e){return void 0!==e?(console.warn("THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead."),this.addVectors(t,e)):(this.x+=t.x,this.y+=t.y,this.z+=t.z,this.w+=t.w,this)}addScalar(t){return this.x+=t,this.y+=t,this.z+=t,this.w+=t,this}addVectors(t,e){return this.x=t.x+e.x,this.y=t.y+e.y,this.z=t.z+e.z,this.w=t.w+e.w,this}addScaledVector(t,e){return this.x+=t.x*e,this.y+=t.y*e,this.z+=t.z*e,this.w+=t.w*e,this}sub(t,e){return void 0!==e?(console.warn("THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead."),this.subVectors(t,e)):(this.x-=t.x,this.y-=t.y,this.z-=t.z,this.w-=t.w,this)}subScalar(t){return this.x-=t,this.y-=t,this.z-=t,this.w-=t,this}subVectors(t,e){return this.x=t.x-e.x,this.y=t.y-e.y,this.z=t.z-e.z,this.w=t.w-e.w,this}multiply(t){return this.x*=t.x,this.y*=t.y,this.z*=t.z,this.w*=t.w,this}multiplyScalar(t){return this.x*=t,this.y*=t,this.z*=t,this.w*=t,this}applyMatrix4(t){const e=this.x,n=this.y,i=this.z,r=this.w,s=t.elements;return this.x=s[0]*e+s[4]*n+s[8]*i+s[12]*r,this.y=s[1]*e+s[5]*n+s[9]*i+s[13]*r,this.z=s[2]*e+s[6]*n+s[10]*i+s[14]*r,this.w=s[3]*e+s[7]*n+s[11]*i+s[15]*r,this}divideScalar(t){return this.multiplyScalar(1/t)}setAxisAngleFromQuaternion(t){this.w=2*Math.acos(t.w);const e=Math.sqrt(1-t.w*t.w);return e<1e-4?(this.x=1,this.y=0,this.z=0):(this.x=t.x/e,this.y=t.y/e,this.z=t.z/e),this}setAxisAngleFromRotationMatrix(t){let e,n,i,r;const s=.01,a=.1,o=t.elements,l=o[0],c=o[4],h=o[8],u=o[1],d=o[5],p=o[9],m=o[2],f=o[6],g=o[10];if(Math.abs(c-u)<s&&Math.abs(h-m)<s&&Math.abs(p-f)<s){if(Math.abs(c+u)<a&&Math.abs(h+m)<a&&Math.abs(p+f)<a&&Math.abs(l+d+g-3)<a)return this.set(1,0,0,0),this;e=Math.PI;const t=(l+1)/2,o=(d+1)/2,v=(g+1)/2,y=(c+u)/4,x=(h+m)/4,_=(p+f)/4;return t>o&&t>v?t<s?(n=0,i=.707106781,r=.707106781):(n=Math.sqrt(t),i=y/n,r=x/n):o>v?o<s?(n=.707106781,i=0,r=.707106781):(i=Math.sqrt(o),n=y/i,r=_/i):v<s?(n=.707106781,i=.707106781,r=0):(r=Math.sqrt(v),n=x/r,i=_/r),this.set(n,i,r,e),this}let v=Math.sqrt((f-p)*(f-p)+(h-m)*(h-m)+(u-c)*(u-c));return Math.abs(v)<.001&&(v=1),this.x=(f-p)/v,this.y=(h-m)/v,this.z=(u-c)/v,this.w=Math.acos((l+d+g-1)/2),this}min(t){return this.x=Math.min(this.x,t.x),this.y=Math.min(this.y,t.y),this.z=Math.min(this.z,t.z),this.w=Math.min(this.w,t.w),this}max(t){return this.x=Math.max(this.x,t.x),this.y=Math.max(this.y,t.y),this.z=Math.max(this.z,t.z),this.w=Math.max(this.w,t.w),this}clamp(t,e){return this.x=Math.max(t.x,Math.min(e.x,this.x)),this.y=Math.max(t.y,Math.min(e.y,this.y)),this.z=Math.max(t.z,Math.min(e.z,this.z)),this.w=Math.max(t.w,Math.min(e.w,this.w)),this}clampScalar(t,e){return this.x=Math.max(t,Math.min(e,this.x)),this.y=Math.max(t,Math.min(e,this.y)),this.z=Math.max(t,Math.min(e,this.z)),this.w=Math.max(t,Math.min(e,this.w)),this}clampLength(t,e){const n=this.length();return this.divideScalar(n||1).multiplyScalar(Math.max(t,Math.min(e,n)))}floor(){return this.x=Math.floor(this.x),this.y=Math.floor(this.y),this.z=Math.floor(this.z),this.w=Math.floor(this.w),this}ceil(){return this.x=Math.ceil(this.x),this.y=Math.ceil(this.y),this.z=Math.ceil(this.z),this.w=Math.ceil(this.w),this}round(){return this.x=Math.round(this.x),this.y=Math.round(this.y),this.z=Math.round(this.z),this.w=Math.round(this.w),this}roundToZero(){return this.x=this.x<0?Math.ceil(this.x):Math.floor(this.x),this.y=this.y<0?Math.ceil(this.y):Math.floor(this.y),this.z=this.z<0?Math.ceil(this.z):Math.floor(this.z),this.w=this.w<0?Math.ceil(this.w):Math.floor(this.w),this}negate(){return this.x=-this.x,this.y=-this.y,this.z=-this.z,this.w=-this.w,this}dot(t){return this.x*t.x+this.y*t.y+this.z*t.z+this.w*t.w}lengthSq(){return this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w}length(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w)}manhattanLength(){return Math.abs(this.x)+Math.abs(this.y)+Math.abs(this.z)+Math.abs(this.w)}normalize(){return this.divideScalar(this.length()||1)}setLength(t){return this.normalize().multiplyScalar(t)}lerp(t,e){return this.x+=(t.x-this.x)*e,this.y+=(t.y-this.y)*e,this.z+=(t.z-this.z)*e,this.w+=(t.w-this.w)*e,this}lerpVectors(t,e,n){return this.x=t.x+(e.x-t.x)*n,this.y=t.y+(e.y-t.y)*n,this.z=t.z+(e.z-t.z)*n,this.w=t.w+(e.w-t.w)*n,this}equals(t){return t.x===this.x&&t.y===this.y&&t.z===this.z&&t.w===this.w}fromArray(t,e=0){return this.x=t[e],this.y=t[e+1],this.z=t[e+2],this.w=t[e+3],this}toArray(t=[],e=0){return t[e]=this.x,t[e+1]=this.y,t[e+2]=this.z,t[e+3]=this.w,t}fromBufferAttribute(t,e,n){return void 0!==n&&console.warn("THREE.Vector4: offset has been removed from .fromBufferAttribute()."),this.x=t.getX(e),this.y=t.getY(e),this.z=t.getZ(e),this.w=t.getW(e),this}random(){return this.x=Math.random(),this.y=Math.random(),this.z=Math.random(),this.w=Math.random(),this}}St.prototype.isVector4=!0;class Tt extends rt{constructor(t,e,n={}){super(),this.width=t,this.height=e,this.depth=1,this.scissor=new St(0,0,t,e),this.scissorTest=!1,this.viewport=new St(0,0,t,e),this.texture=new Mt(void 0,n.mapping,n.wrapS,n.wrapT,n.magFilter,n.minFilter,n.format,n.type,n.anisotropy,n.encoding),this.texture.image={width:t,height:e,depth:1},this.texture.generateMipmaps=void 0!==n.generateMipmaps&&n.generateMipmaps,this.texture.minFilter=void 0!==n.minFilter?n.minFilter:g,this.depthBuffer=void 0===n.depthBuffer||n.depthBuffer,this.stencilBuffer=void 0!==n.stencilBuffer&&n.stencilBuffer,this.depthTexture=void 0!==n.depthTexture?n.depthTexture:null}setTexture(t){t.image={width:this.width,height:this.height,depth:this.depth},this.texture=t}setSize(t,e,n=1){this.width===t&&this.height===e&&this.depth===n||(this.width=t,this.height=e,this.depth=n,this.texture.image.width=t,this.texture.image.height=e,this.texture.image.depth=n,this.dispose()),this.viewport.set(0,0,t,e),this.scissor.set(0,0,t,e)}clone(){return(new this.constructor).copy(this)}copy(t){return this.width=t.width,this.height=t.height,this.depth=t.depth,this.viewport.copy(t.viewport),this.texture=t.texture.clone(),this.texture.image={...this.texture.image},this.depthBuffer=t.depthBuffer,this.stencilBuffer=t.stencilBuffer,this.depthTexture=t.depthTexture,this}dispose(){this.dispatchEvent({type:"dispose"})}}Tt.prototype.isWebGLRenderTarget=!0;class Et extends Tt{constructor(t,e,n){super(t,e);const i=this.texture;this.texture=[];for(let t=0;t<n;t++)this.texture[t]=i.clone()}setSize(t,e,n=1){if(this.width!==t||this.height!==e||this.depth!==n){this.width=t,this.height=e,this.depth=n;for(let i=0,r=this.texture.length;i<r;i++)this.texture[i].image.width=t,this.texture[i].image.height=e,this.texture[i].image.depth=n;this.dispose()}return this.viewport.set(0,0,t,e),this.scissor.set(0,0,t,e),this}copy(t){this.dispose(),this.width=t.width,this.height=t.height,this.depth=t.depth,this.viewport.set(0,0,this.width,this.height),this.scissor.set(0,0,this.width,this.height),this.depthBuffer=t.depthBuffer,this.stencilBuffer=t.stencilBuffer,this.depthTexture=t.depthTexture,this.texture.length=0;for(let e=0,n=t.texture.length;e<n;e++)this.texture[e]=t.texture[e].clone();return this}}Et.prototype.isWebGLMultipleRenderTargets=!0;class At extends Tt{constructor(t,e,n){super(t,e,n),this.samples=4}copy(t){return super.copy.call(this,t),this.samples=t.samples,this}}At.prototype.isWebGLMultisampleRenderTarget=!0;class Lt{constructor(t=0,e=0,n=0,i=1){this._x=t,this._y=e,this._z=n,this._w=i}static slerp(t,e,n,i){return console.warn("THREE.Quaternion: Static .slerp() has been deprecated. Use qm.slerpQuaternions( qa, qb, t ) instead."),n.slerpQuaternions(t,e,i)}static slerpFlat(t,e,n,i,r,s,a){let o=n[i+0],l=n[i+1],c=n[i+2],h=n[i+3];const u=r[s+0],d=r[s+1],p=r[s+2],m=r[s+3];if(0===a)return t[e+0]=o,t[e+1]=l,t[e+2]=c,void(t[e+3]=h);if(1===a)return t[e+0]=u,t[e+1]=d,t[e+2]=p,void(t[e+3]=m);if(h!==m||o!==u||l!==d||c!==p){let t=1-a;const e=o*u+l*d+c*p+h*m,n=e>=0?1:-1,i=1-e*e;if(i>Number.EPSILON){const r=Math.sqrt(i),s=Math.atan2(r,e*n);t=Math.sin(t*s)/r,a=Math.sin(a*s)/r}const r=a*n;if(o=o*t+u*r,l=l*t+d*r,c=c*t+p*r,h=h*t+m*r,t===1-a){const t=1/Math.sqrt(o*o+l*l+c*c+h*h);o*=t,l*=t,c*=t,h*=t}}t[e]=o,t[e+1]=l,t[e+2]=c,t[e+3]=h}static multiplyQuaternionsFlat(t,e,n,i,r,s){const a=n[i],o=n[i+1],l=n[i+2],c=n[i+3],h=r[s],u=r[s+1],d=r[s+2],p=r[s+3];return t[e]=a*p+c*h+o*d-l*u,t[e+1]=o*p+c*u+l*h-a*d,t[e+2]=l*p+c*d+a*u-o*h,t[e+3]=c*p-a*h-o*u-l*d,t}get x(){return this._x}set x(t){this._x=t,this._onChangeCallback()}get y(){return this._y}set y(t){this._y=t,this._onChangeCallback()}get z(){return this._z}set z(t){this._z=t,this._onChangeCallback()}get w(){return this._w}set w(t){this._w=t,this._onChangeCallback()}set(t,e,n,i){return this._x=t,this._y=e,this._z=n,this._w=i,this._onChangeCallback(),this}clone(){return new this.constructor(this._x,this._y,this._z,this._w)}copy(t){return this._x=t.x,this._y=t.y,this._z=t.z,this._w=t.w,this._onChangeCallback(),this}setFromEuler(t,e){if(!t||!t.isEuler)throw new Error("THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.");const n=t._x,i=t._y,r=t._z,s=t._order,a=Math.cos,o=Math.sin,l=a(n/2),c=a(i/2),h=a(r/2),u=o(n/2),d=o(i/2),p=o(r/2);switch(s){case"XYZ":this._x=u*c*h+l*d*p,this._y=l*d*h-u*c*p,this._z=l*c*p+u*d*h,this._w=l*c*h-u*d*p;break;case"YXZ":this._x=u*c*h+l*d*p,this._y=l*d*h-u*c*p,this._z=l*c*p-u*d*h,this._w=l*c*h+u*d*p;break;case"ZXY":this._x=u*c*h-l*d*p,this._y=l*d*h+u*c*p,this._z=l*c*p+u*d*h,this._w=l*c*h-u*d*p;break;case"ZYX":this._x=u*c*h-l*d*p,this._y=l*d*h+u*c*p,this._z=l*c*p-u*d*h,this._w=l*c*h+u*d*p;break;case"YZX":this._x=u*c*h+l*d*p,this._y=l*d*h+u*c*p,this._z=l*c*p-u*d*h,this._w=l*c*h-u*d*p;break;case"XZY":this._x=u*c*h-l*d*p,this._y=l*d*h-u*c*p,this._z=l*c*p+u*d*h,this._w=l*c*h+u*d*p;break;default:console.warn("THREE.Quaternion: .setFromEuler() encountered an unknown order: "+s)}return!1!==e&&this._onChangeCallback(),this}setFromAxisAngle(t,e){const n=e/2,i=Math.sin(n);return this._x=t.x*i,this._y=t.y*i,this._z=t.z*i,this._w=Math.cos(n),this._onChangeCallback(),this}setFromRotationMatrix(t){const e=t.elements,n=e[0],i=e[4],r=e[8],s=e[1],a=e[5],o=e[9],l=e[2],c=e[6],h=e[10],u=n+a+h;if(u>0){const t=.5/Math.sqrt(u+1);this._w=.25/t,this._x=(c-o)*t,this._y=(r-l)*t,this._z=(s-i)*t}else if(n>a&&n>h){const t=2*Math.sqrt(1+n-a-h);this._w=(c-o)/t,this._x=.25*t,this._y=(i+s)/t,this._z=(r+l)/t}else if(a>h){const t=2*Math.sqrt(1+a-n-h);this._w=(r-l)/t,this._x=(i+s)/t,this._y=.25*t,this._z=(o+c)/t}else{const t=2*Math.sqrt(1+h-n-a);this._w=(s-i)/t,this._x=(r+l)/t,this._y=(o+c)/t,this._z=.25*t}return this._onChangeCallback(),this}setFromUnitVectors(t,e){let n=t.dot(e)+1;return n<Number.EPSILON?(n=0,Math.abs(t.x)>Math.abs(t.z)?(this._x=-t.y,this._y=t.x,this._z=0,this._w=n):(this._x=0,this._y=-t.z,this._z=t.y,this._w=n)):(this._x=t.y*e.z-t.z*e.y,this._y=t.z*e.x-t.x*e.z,this._z=t.x*e.y-t.y*e.x,this._w=n),this.normalize()}angleTo(t){return 2*Math.acos(Math.abs(ht(this.dot(t),-1,1)))}rotateTowards(t,e){const n=this.angleTo(t);if(0===n)return this;const i=Math.min(1,e/n);return this.slerp(t,i),this}identity(){return this.set(0,0,0,1)}invert(){return this.conjugate()}conjugate(){return this._x*=-1,this._y*=-1,this._z*=-1,this._onChangeCallback(),this}dot(t){return this._x*t._x+this._y*t._y+this._z*t._z+this._w*t._w}lengthSq(){return this._x*this._x+this._y*this._y+this._z*this._z+this._w*this._w}length(){return Math.sqrt(this._x*this._x+this._y*this._y+this._z*this._z+this._w*this._w)}normalize(){let t=this.length();return 0===t?(this._x=0,this._y=0,this._z=0,this._w=1):(t=1/t,this._x=this._x*t,this._y=this._y*t,this._z=this._z*t,this._w=this._w*t),this._onChangeCallback(),this}multiply(t,e){return void 0!==e?(console.warn("THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead."),this.multiplyQuaternions(t,e)):this.multiplyQuaternions(this,t)}premultiply(t){return this.multiplyQuaternions(t,this)}multiplyQuaternions(t,e){const n=t._x,i=t._y,r=t._z,s=t._w,a=e._x,o=e._y,l=e._z,c=e._w;return this._x=n*c+s*a+i*l-r*o,this._y=i*c+s*o+r*a-n*l,this._z=r*c+s*l+n*o-i*a,this._w=s*c-n*a-i*o-r*l,this._onChangeCallback(),this}slerp(t,e){if(0===e)return this;if(1===e)return this.copy(t);const n=this._x,i=this._y,r=this._z,s=this._w;let a=s*t._w+n*t._x+i*t._y+r*t._z;if(a<0?(this._w=-t._w,this._x=-t._x,this._y=-t._y,this._z=-t._z,a=-a):this.copy(t),a>=1)return this._w=s,this._x=n,this._y=i,this._z=r,this;const o=1-a*a;if(o<=Number.EPSILON){const t=1-e;return this._w=t*s+e*this._w,this._x=t*n+e*this._x,this._y=t*i+e*this._y,this._z=t*r+e*this._z,this.normalize(),this._onChangeCallback(),this}const l=Math.sqrt(o),c=Math.atan2(l,a),h=Math.sin((1-e)*c)/l,u=Math.sin(e*c)/l;return this._w=s*h+this._w*u,this._x=n*h+this._x*u,this._y=i*h+this._y*u,this._z=r*h+this._z*u,this._onChangeCallback(),this}slerpQuaternions(t,e,n){this.copy(t).slerp(e,n)}equals(t){return t._x===this._x&&t._y===this._y&&t._z===this._z&&t._w===this._w}fromArray(t,e=0){return this._x=t[e],this._y=t[e+1],this._z=t[e+2],this._w=t[e+3],this._onChangeCallback(),this}toArray(t=[],e=0){return t[e]=this._x,t[e+1]=this._y,t[e+2]=this._z,t[e+3]=this._w,t}fromBufferAttribute(t,e){return this._x=t.getX(e),this._y=t.getY(e),this._z=t.getZ(e),this._w=t.getW(e),this}_onChange(t){return this._onChangeCallback=t,this}_onChangeCallback(){}}Lt.prototype.isQuaternion=!0;class Rt{constructor(t=0,e=0,n=0){this.x=t,this.y=e,this.z=n}set(t,e,n){return void 0===n&&(n=this.z),this.x=t,this.y=e,this.z=n,this}setScalar(t){return this.x=t,this.y=t,this.z=t,this}setX(t){return this.x=t,this}setY(t){return this.y=t,this}setZ(t){return this.z=t,this}setComponent(t,e){switch(t){case 0:this.x=e;break;case 1:this.y=e;break;case 2:this.z=e;break;default:throw new Error("index is out of range: "+t)}return this}getComponent(t){switch(t){case 0:return this.x;case 1:return this.y;case 2:return this.z;default:throw new Error("index is out of range: "+t)}}clone(){return new this.constructor(this.x,this.y,this.z)}copy(t){return this.x=t.x,this.y=t.y,this.z=t.z,this}add(t,e){return void 0!==e?(console.warn("THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead."),this.addVectors(t,e)):(this.x+=t.x,this.y+=t.y,this.z+=t.z,this)}addScalar(t){return this.x+=t,this.y+=t,this.z+=t,this}addVectors(t,e){return this.x=t.x+e.x,this.y=t.y+e.y,this.z=t.z+e.z,this}addScaledVector(t,e){return this.x+=t.x*e,this.y+=t.y*e,this.z+=t.z*e,this}sub(t,e){return void 0!==e?(console.warn("THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead."),this.subVectors(t,e)):(this.x-=t.x,this.y-=t.y,this.z-=t.z,this)}subScalar(t){return this.x-=t,this.y-=t,this.z-=t,this}subVectors(t,e){return this.x=t.x-e.x,this.y=t.y-e.y,this.z=t.z-e.z,this}multiply(t,e){return void 0!==e?(console.warn("THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead."),this.multiplyVectors(t,e)):(this.x*=t.x,this.y*=t.y,this.z*=t.z,this)}multiplyScalar(t){return this.x*=t,this.y*=t,this.z*=t,this}multiplyVectors(t,e){return this.x=t.x*e.x,this.y=t.y*e.y,this.z=t.z*e.z,this}applyEuler(t){return t&&t.isEuler||console.error("THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order."),this.applyQuaternion(Pt.setFromEuler(t))}applyAxisAngle(t,e){return this.applyQuaternion(Pt.setFromAxisAngle(t,e))}applyMatrix3(t){const e=this.x,n=this.y,i=this.z,r=t.elements;return this.x=r[0]*e+r[3]*n+r[6]*i,this.y=r[1]*e+r[4]*n+r[7]*i,this.z=r[2]*e+r[5]*n+r[8]*i,this}applyNormalMatrix(t){return this.applyMatrix3(t).normalize()}applyMatrix4(t){const e=this.x,n=this.y,i=this.z,r=t.elements,s=1/(r[3]*e+r[7]*n+r[11]*i+r[15]);return this.x=(r[0]*e+r[4]*n+r[8]*i+r[12])*s,this.y=(r[1]*e+r[5]*n+r[9]*i+r[13])*s,this.z=(r[2]*e+r[6]*n+r[10]*i+r[14])*s,this}applyQuaternion(t){const e=this.x,n=this.y,i=this.z,r=t.x,s=t.y,a=t.z,o=t.w,l=o*e+s*i-a*n,c=o*n+a*e-r*i,h=o*i+r*n-s*e,u=-r*e-s*n-a*i;return this.x=l*o+u*-r+c*-a-h*-s,this.y=c*o+u*-s+h*-r-l*-a,this.z=h*o+u*-a+l*-s-c*-r,this}project(t){return this.applyMatrix4(t.matrixWorldInverse).applyMatrix4(t.projectionMatrix)}unproject(t){return this.applyMatrix4(t.projectionMatrixInverse).applyMatrix4(t.matrixWorld)}transformDirection(t){const e=this.x,n=this.y,i=this.z,r=t.elements;return this.x=r[0]*e+r[4]*n+r[8]*i,this.y=r[1]*e+r[5]*n+r[9]*i,this.z=r[2]*e+r[6]*n+r[10]*i,this.normalize()}divide(t){return this.x/=t.x,this.y/=t.y,this.z/=t.z,this}divideScalar(t){return this.multiplyScalar(1/t)}min(t){return this.x=Math.min(this.x,t.x),this.y=Math.min(this.y,t.y),this.z=Math.min(this.z,t.z),this}max(t){return this.x=Math.max(this.x,t.x),this.y=Math.max(this.y,t.y),this.z=Math.max(this.z,t.z),this}clamp(t,e){return this.x=Math.max(t.x,Math.min(e.x,this.x)),this.y=Math.max(t.y,Math.min(e.y,this.y)),this.z=Math.max(t.z,Math.min(e.z,this.z)),this}clampScalar(t,e){return this.x=Math.max(t,Math.min(e,this.x)),this.y=Math.max(t,Math.min(e,this.y)),this.z=Math.max(t,Math.min(e,this.z)),this}clampLength(t,e){const n=this.length();return this.divideScalar(n||1).multiplyScalar(Math.max(t,Math.min(e,n)))}floor(){return this.x=Math.floor(this.x),this.y=Math.floor(this.y),this.z=Math.floor(this.z),this}ceil(){return this.x=Math.ceil(this.x),this.y=Math.ceil(this.y),this.z=Math.ceil(this.z),this}round(){return this.x=Math.round(this.x),this.y=Math.round(this.y),this.z=Math.round(this.z),this}roundToZero(){return this.x=this.x<0?Math.ceil(this.x):Math.floor(this.x),this.y=this.y<0?Math.ceil(this.y):Math.floor(this.y),this.z=this.z<0?Math.ceil(this.z):Math.floor(this.z),this}negate(){return this.x=-this.x,this.y=-this.y,this.z=-this.z,this}dot(t){return this.x*t.x+this.y*t.y+this.z*t.z}lengthSq(){return this.x*this.x+this.y*this.y+this.z*this.z}length(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z)}manhattanLength(){return Math.abs(this.x)+Math.abs(this.y)+Math.abs(this.z)}normalize(){return this.divideScalar(this.length()||1)}setLength(t){return this.normalize().multiplyScalar(t)}lerp(t,e){return this.x+=(t.x-this.x)*e,this.y+=(t.y-this.y)*e,this.z+=(t.z-this.z)*e,this}lerpVectors(t,e,n){return this.x=t.x+(e.x-t.x)*n,this.y=t.y+(e.y-t.y)*n,this.z=t.z+(e.z-t.z)*n,this}cross(t,e){return void 0!==e?(console.warn("THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead."),this.crossVectors(t,e)):this.crossVectors(this,t)}crossVectors(t,e){const n=t.x,i=t.y,r=t.z,s=e.x,a=e.y,o=e.z;return this.x=i*o-r*a,this.y=r*s-n*o,this.z=n*a-i*s,this}projectOnVector(t){const e=t.lengthSq();if(0===e)return this.set(0,0,0);const n=t.dot(this)/e;return this.copy(t).multiplyScalar(n)}projectOnPlane(t){return Ct.copy(this).projectOnVector(t),this.sub(Ct)}reflect(t){return this.sub(Ct.copy(t).multiplyScalar(2*this.dot(t)))}angleTo(t){const e=Math.sqrt(this.lengthSq()*t.lengthSq());if(0===e)return Math.PI/2;const n=this.dot(t)/e;return Math.acos(ht(n,-1,1))}distanceTo(t){return Math.sqrt(this.distanceToSquared(t))}distanceToSquared(t){const e=this.x-t.x,n=this.y-t.y,i=this.z-t.z;return e*e+n*n+i*i}manhattanDistanceTo(t){return Math.abs(this.x-t.x)+Math.abs(this.y-t.y)+Math.abs(this.z-t.z)}setFromSpherical(t){return this.setFromSphericalCoords(t.radius,t.phi,t.theta)}setFromSphericalCoords(t,e,n){const i=Math.sin(e)*t;return this.x=i*Math.sin(n),this.y=Math.cos(e)*t,this.z=i*Math.cos(n),this}setFromCylindrical(t){return this.setFromCylindricalCoords(t.radius,t.theta,t.y)}setFromCylindricalCoords(t,e,n){return this.x=t*Math.sin(e),this.y=n,this.z=t*Math.cos(e),this}setFromMatrixPosition(t){const e=t.elements;return this.x=e[12],this.y=e[13],this.z=e[14],this}setFromMatrixScale(t){const e=this.setFromMatrixColumn(t,0).length(),n=this.setFromMatrixColumn(t,1).length(),i=this.setFromMatrixColumn(t,2).length();return this.x=e,this.y=n,this.z=i,this}setFromMatrixColumn(t,e){return this.fromArray(t.elements,4*e)}setFromMatrix3Column(t,e){return this.fromArray(t.elements,3*e)}equals(t){return t.x===this.x&&t.y===this.y&&t.z===this.z}fromArray(t,e=0){return this.x=t[e],this.y=t[e+1],this.z=t[e+2],this}toArray(t=[],e=0){return t[e]=this.x,t[e+1]=this.y,t[e+2]=this.z,t}fromBufferAttribute(t,e,n){return void 0!==n&&console.warn("THREE.Vector3: offset has been removed from .fromBufferAttribute()."),this.x=t.getX(e),this.y=t.getY(e),this.z=t.getZ(e),this}random(){return this.x=Math.random(),this.y=Math.random(),this.z=Math.random(),this}}Rt.prototype.isVector3=!0;const Ct=new Rt,Pt=new Lt;class Dt{constructor(t=new Rt(1/0,1/0,1/0),e=new Rt(-1/0,-1/0,-1/0)){this.min=t,this.max=e}set(t,e){return this.min.copy(t),this.max.copy(e),this}setFromArray(t){let e=1/0,n=1/0,i=1/0,r=-1/0,s=-1/0,a=-1/0;for(let o=0,l=t.length;o<l;o+=3){const l=t[o],c=t[o+1],h=t[o+2];l<e&&(e=l),c<n&&(n=c),h<i&&(i=h),l>r&&(r=l),c>s&&(s=c),h>a&&(a=h)}return this.min.set(e,n,i),this.max.set(r,s,a),this}setFromBufferAttribute(t){let e=1/0,n=1/0,i=1/0,r=-1/0,s=-1/0,a=-1/0;for(let o=0,l=t.count;o<l;o++){const l=t.getX(o),c=t.getY(o),h=t.getZ(o);l<e&&(e=l),c<n&&(n=c),h<i&&(i=h),l>r&&(r=l),c>s&&(s=c),h>a&&(a=h)}return this.min.set(e,n,i),this.max.set(r,s,a),this}setFromPoints(t){this.makeEmpty();for(let e=0,n=t.length;e<n;e++)this.expandByPoint(t[e]);return this}setFromCenterAndSize(t,e){const n=Nt.copy(e).multiplyScalar(.5);return this.min.copy(t).sub(n),this.max.copy(t).add(n),this}setFromObject(t){return this.makeEmpty(),this.expandByObject(t)}clone(){return(new this.constructor).copy(this)}copy(t){return this.min.copy(t.min),this.max.copy(t.max),this}makeEmpty(){return this.min.x=this.min.y=this.min.z=1/0,this.max.x=this.max.y=this.max.z=-1/0,this}isEmpty(){return this.max.x<this.min.x||this.max.y<this.min.y||this.max.z<this.min.z}getCenter(t){return this.isEmpty()?t.set(0,0,0):t.addVectors(this.min,this.max).multiplyScalar(.5)}getSize(t){return this.isEmpty()?t.set(0,0,0):t.subVectors(this.max,this.min)}expandByPoint(t){return this.min.min(t),this.max.max(t),this}expandByVector(t){return this.min.sub(t),this.max.add(t),this}expandByScalar(t){return this.min.addScalar(-t),this.max.addScalar(t),this}expandByObject(t){t.updateWorldMatrix(!1,!1);const e=t.geometry;void 0!==e&&(null===e.boundingBox&&e.computeBoundingBox(),Bt.copy(e.boundingBox),Bt.applyMatrix4(t.matrixWorld),this.union(Bt));const n=t.children;for(let t=0,e=n.length;t<e;t++)this.expandByObject(n[t]);return this}containsPoint(t){return!(t.x<this.min.x||t.x>this.max.x||t.y<this.min.y||t.y>this.max.y||t.z<this.min.z||t.z>this.max.z)}containsBox(t){return this.min.x<=t.min.x&&t.max.x<=this.max.x&&this.min.y<=t.min.y&&t.max.y<=this.max.y&&this.min.z<=t.min.z&&t.max.z<=this.max.z}getParameter(t,e){return e.set((t.x-this.min.x)/(this.max.x-this.min.x),(t.y-this.min.y)/(this.max.y-this.min.y),(t.z-this.min.z)/(this.max.z-this.min.z))}intersectsBox(t){return!(t.max.x<this.min.x||t.min.x>this.max.x||t.max.y<this.min.y||t.min.y>this.max.y||t.max.z<this.min.z||t.min.z>this.max.z)}intersectsSphere(t){return this.clampPoint(t.center,Nt),Nt.distanceToSquared(t.center)<=t.radius*t.radius}intersectsPlane(t){let e,n;return t.normal.x>0?(e=t.normal.x*this.min.x,n=t.normal.x*this.max.x):(e=t.normal.x*this.max.x,n=t.normal.x*this.min.x),t.normal.y>0?(e+=t.normal.y*this.min.y,n+=t.normal.y*this.max.y):(e+=t.normal.y*this.max.y,n+=t.normal.y*this.min.y),t.normal.z>0?(e+=t.normal.z*this.min.z,n+=t.normal.z*this.max.z):(e+=t.normal.z*this.max.z,n+=t.normal.z*this.min.z),e<=-t.constant&&n>=-t.constant}intersectsTriangle(t){if(this.isEmpty())return!1;this.getCenter(kt),Vt.subVectors(this.max,kt),zt.subVectors(t.a,kt),Ft.subVectors(t.b,kt),Ot.subVectors(t.c,kt),Ht.subVectors(Ft,zt),Ut.subVectors(Ot,Ft),Gt.subVectors(zt,Ot);let e=[0,-Ht.z,Ht.y,0,-Ut.z,Ut.y,0,-Gt.z,Gt.y,Ht.z,0,-Ht.x,Ut.z,0,-Ut.x,Gt.z,0,-Gt.x,-Ht.y,Ht.x,0,-Ut.y,Ut.x,0,-Gt.y,Gt.x,0];return!!qt(e,zt,Ft,Ot,Vt)&&(e=[1,0,0,0,1,0,0,0,1],!!qt(e,zt,Ft,Ot,Vt)&&(Wt.crossVectors(Ht,Ut),e=[Wt.x,Wt.y,Wt.z],qt(e,zt,Ft,Ot,Vt)))}clampPoint(t,e){return e.copy(t).clamp(this.min,this.max)}distanceToPoint(t){return Nt.copy(t).clamp(this.min,this.max).sub(t).length()}getBoundingSphere(t){return this.getCenter(t.center),t.radius=.5*this.getSize(Nt).length(),t}intersect(t){return this.min.max(t.min),this.max.min(t.max),this.isEmpty()&&this.makeEmpty(),this}union(t){return this.min.min(t.min),this.max.max(t.max),this}applyMatrix4(t){return this.isEmpty()||(It[0].set(this.min.x,this.min.y,this.min.z).applyMatrix4(t),It[1].set(this.min.x,this.min.y,this.max.z).applyMatrix4(t),It[2].set(this.min.x,this.max.y,this.min.z).applyMatrix4(t),It[3].set(this.min.x,this.max.y,this.max.z).applyMatrix4(t),It[4].set(this.max.x,this.min.y,this.min.z).applyMatrix4(t),It[5].set(this.max.x,this.min.y,this.max.z).applyMatrix4(t),It[6].set(this.max.x,this.max.y,this.min.z).applyMatrix4(t),It[7].set(this.max.x,this.max.y,this.max.z).applyMatrix4(t),this.setFromPoints(It)),this}translate(t){return this.min.add(t),this.max.add(t),this}equals(t){return t.min.equals(this.min)&&t.max.equals(this.max)}}Dt.prototype.isBox3=!0;const It=[new Rt,new Rt,new Rt,new Rt,new Rt,new Rt,new Rt,new Rt],Nt=new Rt,Bt=new Dt,zt=new Rt,Ft=new Rt,Ot=new Rt,Ht=new Rt,Ut=new Rt,Gt=new Rt,kt=new Rt,Vt=new Rt,Wt=new Rt,jt=new Rt;function qt(t,e,n,i,r){for(let s=0,a=t.length-3;s<=a;s+=3){jt.fromArray(t,s);const a=r.x*Math.abs(jt.x)+r.y*Math.abs(jt.y)+r.z*Math.abs(jt.z),o=e.dot(jt),l=n.dot(jt),c=i.dot(jt);if(Math.max(-Math.max(o,l,c),Math.min(o,l,c))>a)return!1}return!0}const Xt=new Dt,Yt=new Rt,Jt=new Rt,Zt=new Rt;class Qt{constructor(t=new Rt,e=-1){this.center=t,this.radius=e}set(t,e){return this.center.copy(t),this.radius=e,this}setFromPoints(t,e){const n=this.center;void 0!==e?n.copy(e):Xt.setFromPoints(t).getCenter(n);let i=0;for(let e=0,r=t.length;e<r;e++)i=Math.max(i,n.distanceToSquared(t[e]));return this.radius=Math.sqrt(i),this}copy(t){return this.center.copy(t.center),this.radius=t.radius,this}isEmpty(){return this.radius<0}makeEmpty(){return this.center.set(0,0,0),this.radius=-1,this}containsPoint(t){return t.distanceToSquared(this.center)<=this.radius*this.radius}distanceToPoint(t){return t.distanceTo(this.center)-this.radius}intersectsSphere(t){const e=this.radius+t.radius;return t.center.distanceToSquared(this.center)<=e*e}intersectsBox(t){return t.intersectsSphere(this)}intersectsPlane(t){return Math.abs(t.distanceToPoint(this.center))<=this.radius}clampPoint(t,e){const n=this.center.distanceToSquared(t);return e.copy(t),n>this.radius*this.radius&&(e.sub(this.center).normalize(),e.multiplyScalar(this.radius).add(this.center)),e}getBoundingBox(t){return this.isEmpty()?(t.makeEmpty(),t):(t.set(this.center,this.center),t.expandByScalar(this.radius),t)}applyMatrix4(t){return this.center.applyMatrix4(t),this.radius=this.radius*t.getMaxScaleOnAxis(),this}translate(t){return this.center.add(t),this}expandByPoint(t){Zt.subVectors(t,this.center);const e=Zt.lengthSq();if(e>this.radius*this.radius){const t=Math.sqrt(e),n=.5*(t-this.radius);this.center.add(Zt.multiplyScalar(n/t)),this.radius+=n}return this}union(t){return Jt.subVectors(t.center,this.center).normalize().multiplyScalar(t.radius),this.expandByPoint(Yt.copy(t.center).add(Jt)),this.expandByPoint(Yt.copy(t.center).sub(Jt)),this}equals(t){return t.center.equals(this.center)&&t.radius===this.radius}clone(){return(new this.constructor).copy(this)}}const Kt=new Rt,$t=new Rt,te=new Rt,ee=new Rt,ne=new Rt,ie=new Rt,re=new Rt;class se{constructor(t=new Rt,e=new Rt(0,0,-1)){this.origin=t,this.direction=e}set(t,e){return this.origin.copy(t),this.direction.copy(e),this}copy(t){return this.origin.copy(t.origin),this.direction.copy(t.direction),this}at(t,e){return e.copy(this.direction).multiplyScalar(t).add(this.origin)}lookAt(t){return this.direction.copy(t).sub(this.origin).normalize(),this}recast(t){return this.origin.copy(this.at(t,Kt)),this}closestPointToPoint(t,e){e.subVectors(t,this.origin);const n=e.dot(this.direction);return n<0?e.copy(this.origin):e.copy(this.direction).multiplyScalar(n).add(this.origin)}distanceToPoint(t){return Math.sqrt(this.distanceSqToPoint(t))}distanceSqToPoint(t){const e=Kt.subVectors(t,this.origin).dot(this.direction);return e<0?this.origin.distanceToSquared(t):(Kt.copy(this.direction).multiplyScalar(e).add(this.origin),Kt.distanceToSquared(t))}distanceSqToSegment(t,e,n,i){$t.copy(t).add(e).multiplyScalar(.5),te.copy(e).sub(t).normalize(),ee.copy(this.origin).sub($t);const r=.5*t.distanceTo(e),s=-this.direction.dot(te),a=ee.dot(this.direction),o=-ee.dot(te),l=ee.lengthSq(),c=Math.abs(1-s*s);let h,u,d,p;if(c>0)if(h=s*o-a,u=s*a-o,p=r*c,h>=0)if(u>=-p)if(u<=p){const t=1/c;h*=t,u*=t,d=h*(h+s*u+2*a)+u*(s*h+u+2*o)+l}else u=r,h=Math.max(0,-(s*u+a)),d=-h*h+u*(u+2*o)+l;else u=-r,h=Math.max(0,-(s*u+a)),d=-h*h+u*(u+2*o)+l;else u<=-p?(h=Math.max(0,-(-s*r+a)),u=h>0?-r:Math.min(Math.max(-r,-o),r),d=-h*h+u*(u+2*o)+l):u<=p?(h=0,u=Math.min(Math.max(-r,-o),r),d=u*(u+2*o)+l):(h=Math.max(0,-(s*r+a)),u=h>0?r:Math.min(Math.max(-r,-o),r),d=-h*h+u*(u+2*o)+l);else u=s>0?-r:r,h=Math.max(0,-(s*u+a)),d=-h*h+u*(u+2*o)+l;return n&&n.copy(this.direction).multiplyScalar(h).add(this.origin),i&&i.copy(te).multiplyScalar(u).add($t),d}intersectSphere(t,e){Kt.subVectors(t.center,this.origin);const n=Kt.dot(this.direction),i=Kt.dot(Kt)-n*n,r=t.radius*t.radius;if(i>r)return null;const s=Math.sqrt(r-i),a=n-s,o=n+s;return a<0&&o<0?null:a<0?this.at(o,e):this.at(a,e)}intersectsSphere(t){return this.distanceSqToPoint(t.center)<=t.radius*t.radius}distanceToPlane(t){const e=t.normal.dot(this.direction);if(0===e)return 0===t.distanceToPoint(this.origin)?0:null;const n=-(this.origin.dot(t.normal)+t.constant)/e;return n>=0?n:null}intersectPlane(t,e){const n=this.distanceToPlane(t);return null===n?null:this.at(n,e)}intersectsPlane(t){const e=t.distanceToPoint(this.origin);if(0===e)return!0;return t.normal.dot(this.direction)*e<0}intersectBox(t,e){let n,i,r,s,a,o;const l=1/this.direction.x,c=1/this.direction.y,h=1/this.direction.z,u=this.origin;return l>=0?(n=(t.min.x-u.x)*l,i=(t.max.x-u.x)*l):(n=(t.max.x-u.x)*l,i=(t.min.x-u.x)*l),c>=0?(r=(t.min.y-u.y)*c,s=(t.max.y-u.y)*c):(r=(t.max.y-u.y)*c,s=(t.min.y-u.y)*c),n>s||r>i?null:((r>n||n!=n)&&(n=r),(s<i||i!=i)&&(i=s),h>=0?(a=(t.min.z-u.z)*h,o=(t.max.z-u.z)*h):(a=(t.max.z-u.z)*h,o=(t.min.z-u.z)*h),n>o||a>i?null:((a>n||n!=n)&&(n=a),(o<i||i!=i)&&(i=o),i<0?null:this.at(n>=0?n:i,e)))}intersectsBox(t){return null!==this.intersectBox(t,Kt)}intersectTriangle(t,e,n,i,r){ne.subVectors(e,t),ie.subVectors(n,t),re.crossVectors(ne,ie);let s,a=this.direction.dot(re);if(a>0){if(i)return null;s=1}else{if(!(a<0))return null;s=-1,a=-a}ee.subVectors(this.origin,t);const o=s*this.direction.dot(ie.crossVectors(ee,ie));if(o<0)return null;const l=s*this.direction.dot(ne.cross(ee));if(l<0)return null;if(o+l>a)return null;const c=-s*ee.dot(re);return c<0?null:this.at(c/a,r)}applyMatrix4(t){return this.origin.applyMatrix4(t),this.direction.transformDirection(t),this}equals(t){return t.origin.equals(this.origin)&&t.direction.equals(this.direction)}clone(){return(new this.constructor).copy(this)}}class ae{constructor(){this.elements=[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],arguments.length>0&&console.error("THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.")}set(t,e,n,i,r,s,a,o,l,c,h,u,d,p,m,f){const g=this.elements;return g[0]=t,g[4]=e,g[8]=n,g[12]=i,g[1]=r,g[5]=s,g[9]=a,g[13]=o,g[2]=l,g[6]=c,g[10]=h,g[14]=u,g[3]=d,g[7]=p,g[11]=m,g[15]=f,this}identity(){return this.set(1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1),this}clone(){return(new ae).fromArray(this.elements)}copy(t){const e=this.elements,n=t.elements;return e[0]=n[0],e[1]=n[1],e[2]=n[2],e[3]=n[3],e[4]=n[4],e[5]=n[5],e[6]=n[6],e[7]=n[7],e[8]=n[8],e[9]=n[9],e[10]=n[10],e[11]=n[11],e[12]=n[12],e[13]=n[13],e[14]=n[14],e[15]=n[15],this}copyPosition(t){const e=this.elements,n=t.elements;return e[12]=n[12],e[13]=n[13],e[14]=n[14],this}setFromMatrix3(t){const e=t.elements;return this.set(e[0],e[3],e[6],0,e[1],e[4],e[7],0,e[2],e[5],e[8],0,0,0,0,1),this}extractBasis(t,e,n){return t.setFromMatrixColumn(this,0),e.setFromMatrixColumn(this,1),n.setFromMatrixColumn(this,2),this}makeBasis(t,e,n){return this.set(t.x,e.x,n.x,0,t.y,e.y,n.y,0,t.z,e.z,n.z,0,0,0,0,1),this}extractRotation(t){const e=this.elements,n=t.elements,i=1/oe.setFromMatrixColumn(t,0).length(),r=1/oe.setFromMatrixColumn(t,1).length(),s=1/oe.setFromMatrixColumn(t,2).length();return e[0]=n[0]*i,e[1]=n[1]*i,e[2]=n[2]*i,e[3]=0,e[4]=n[4]*r,e[5]=n[5]*r,e[6]=n[6]*r,e[7]=0,e[8]=n[8]*s,e[9]=n[9]*s,e[10]=n[10]*s,e[11]=0,e[12]=0,e[13]=0,e[14]=0,e[15]=1,this}makeRotationFromEuler(t){t&&t.isEuler||console.error("THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.");const e=this.elements,n=t.x,i=t.y,r=t.z,s=Math.cos(n),a=Math.sin(n),o=Math.cos(i),l=Math.sin(i),c=Math.cos(r),h=Math.sin(r);if("XYZ"===t.order){const t=s*c,n=s*h,i=a*c,r=a*h;e[0]=o*c,e[4]=-o*h,e[8]=l,e[1]=n+i*l,e[5]=t-r*l,e[9]=-a*o,e[2]=r-t*l,e[6]=i+n*l,e[10]=s*o}else if("YXZ"===t.order){const t=o*c,n=o*h,i=l*c,r=l*h;e[0]=t+r*a,e[4]=i*a-n,e[8]=s*l,e[1]=s*h,e[5]=s*c,e[9]=-a,e[2]=n*a-i,e[6]=r+t*a,e[10]=s*o}else if("ZXY"===t.order){const t=o*c,n=o*h,i=l*c,r=l*h;e[0]=t-r*a,e[4]=-s*h,e[8]=i+n*a,e[1]=n+i*a,e[5]=s*c,e[9]=r-t*a,e[2]=-s*l,e[6]=a,e[10]=s*o}else if("ZYX"===t.order){const t=s*c,n=s*h,i=a*c,r=a*h;e[0]=o*c,e[4]=i*l-n,e[8]=t*l+r,e[1]=o*h,e[5]=r*l+t,e[9]=n*l-i,e[2]=-l,e[6]=a*o,e[10]=s*o}else if("YZX"===t.order){const t=s*o,n=s*l,i=a*o,r=a*l;e[0]=o*c,e[4]=r-t*h,e[8]=i*h+n,e[1]=h,e[5]=s*c,e[9]=-a*c,e[2]=-l*c,e[6]=n*h+i,e[10]=t-r*h}else if("XZY"===t.order){const t=s*o,n=s*l,i=a*o,r=a*l;e[0]=o*c,e[4]=-h,e[8]=l*c,e[1]=t*h+r,e[5]=s*c,e[9]=n*h-i,e[2]=i*h-n,e[6]=a*c,e[10]=r*h+t}return e[3]=0,e[7]=0,e[11]=0,e[12]=0,e[13]=0,e[14]=0,e[15]=1,this}makeRotationFromQuaternion(t){return this.compose(ce,t,he)}lookAt(t,e,n){const i=this.elements;return pe.subVectors(t,e),0===pe.lengthSq()&&(pe.z=1),pe.normalize(),ue.crossVectors(n,pe),0===ue.lengthSq()&&(1===Math.abs(n.z)?pe.x+=1e-4:pe.z+=1e-4,pe.normalize(),ue.crossVectors(n,pe)),ue.normalize(),de.crossVectors(pe,ue),i[0]=ue.x,i[4]=de.x,i[8]=pe.x,i[1]=ue.y,i[5]=de.y,i[9]=pe.y,i[2]=ue.z,i[6]=de.z,i[10]=pe.z,this}multiply(t,e){return void 0!==e?(console.warn("THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead."),this.multiplyMatrices(t,e)):this.multiplyMatrices(this,t)}premultiply(t){return this.multiplyMatrices(t,this)}multiplyMatrices(t,e){const n=t.elements,i=e.elements,r=this.elements,s=n[0],a=n[4],o=n[8],l=n[12],c=n[1],h=n[5],u=n[9],d=n[13],p=n[2],m=n[6],f=n[10],g=n[14],v=n[3],y=n[7],x=n[11],_=n[15],b=i[0],M=i[4],w=i[8],S=i[12],T=i[1],E=i[5],A=i[9],L=i[13],R=i[2],C=i[6],P=i[10],D=i[14],I=i[3],N=i[7],B=i[11],z=i[15];return r[0]=s*b+a*T+o*R+l*I,r[4]=s*M+a*E+o*C+l*N,r[8]=s*w+a*A+o*P+l*B,r[12]=s*S+a*L+o*D+l*z,r[1]=c*b+h*T+u*R+d*I,r[5]=c*M+h*E+u*C+d*N,r[9]=c*w+h*A+u*P+d*B,r[13]=c*S+h*L+u*D+d*z,r[2]=p*b+m*T+f*R+g*I,r[6]=p*M+m*E+f*C+g*N,r[10]=p*w+m*A+f*P+g*B,r[14]=p*S+m*L+f*D+g*z,r[3]=v*b+y*T+x*R+_*I,r[7]=v*M+y*E+x*C+_*N,r[11]=v*w+y*A+x*P+_*B,r[15]=v*S+y*L+x*D+_*z,this}multiplyScalar(t){const e=this.elements;return e[0]*=t,e[4]*=t,e[8]*=t,e[12]*=t,e[1]*=t,e[5]*=t,e[9]*=t,e[13]*=t,e[2]*=t,e[6]*=t,e[10]*=t,e[14]*=t,e[3]*=t,e[7]*=t,e[11]*=t,e[15]*=t,this}determinant(){const t=this.elements,e=t[0],n=t[4],i=t[8],r=t[12],s=t[1],a=t[5],o=t[9],l=t[13],c=t[2],h=t[6],u=t[10],d=t[14];return t[3]*(+r*o*h-i*l*h-r*a*u+n*l*u+i*a*d-n*o*d)+t[7]*(+e*o*d-e*l*u+r*s*u-i*s*d+i*l*c-r*o*c)+t[11]*(+e*l*h-e*a*d-r*s*h+n*s*d+r*a*c-n*l*c)+t[15]*(-i*a*c-e*o*h+e*a*u+i*s*h-n*s*u+n*o*c)}transpose(){const t=this.elements;let e;return e=t[1],t[1]=t[4],t[4]=e,e=t[2],t[2]=t[8],t[8]=e,e=t[6],t[6]=t[9],t[9]=e,e=t[3],t[3]=t[12],t[12]=e,e=t[7],t[7]=t[13],t[13]=e,e=t[11],t[11]=t[14],t[14]=e,this}setPosition(t,e,n){const i=this.elements;return t.isVector3?(i[12]=t.x,i[13]=t.y,i[14]=t.z):(i[12]=t,i[13]=e,i[14]=n),this}invert(){const t=this.elements,e=t[0],n=t[1],i=t[2],r=t[3],s=t[4],a=t[5],o=t[6],l=t[7],c=t[8],h=t[9],u=t[10],d=t[11],p=t[12],m=t[13],f=t[14],g=t[15],v=h*f*l-m*u*l+m*o*d-a*f*d-h*o*g+a*u*g,y=p*u*l-c*f*l-p*o*d+s*f*d+c*o*g-s*u*g,x=c*m*l-p*h*l+p*a*d-s*m*d-c*a*g+s*h*g,_=p*h*o-c*m*o-p*a*u+s*m*u+c*a*f-s*h*f,b=e*v+n*y+i*x+r*_;if(0===b)return this.set(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0);const M=1/b;return t[0]=v*M,t[1]=(m*u*r-h*f*r-m*i*d+n*f*d+h*i*g-n*u*g)*M,t[2]=(a*f*r-m*o*r+m*i*l-n*f*l-a*i*g+n*o*g)*M,t[3]=(h*o*r-a*u*r-h*i*l+n*u*l+a*i*d-n*o*d)*M,t[4]=y*M,t[5]=(c*f*r-p*u*r+p*i*d-e*f*d-c*i*g+e*u*g)*M,t[6]=(p*o*r-s*f*r-p*i*l+e*f*l+s*i*g-e*o*g)*M,t[7]=(s*u*r-c*o*r+c*i*l-e*u*l-s*i*d+e*o*d)*M,t[8]=x*M,t[9]=(p*h*r-c*m*r-p*n*d+e*m*d+c*n*g-e*h*g)*M,t[10]=(s*m*r-p*a*r+p*n*l-e*m*l-s*n*g+e*a*g)*M,t[11]=(c*a*r-s*h*r-c*n*l+e*h*l+s*n*d-e*a*d)*M,t[12]=_*M,t[13]=(c*m*i-p*h*i+p*n*u-e*m*u-c*n*f+e*h*f)*M,t[14]=(p*a*i-s*m*i-p*n*o+e*m*o+s*n*f-e*a*f)*M,t[15]=(s*h*i-c*a*i+c*n*o-e*h*o-s*n*u+e*a*u)*M,this}scale(t){const e=this.elements,n=t.x,i=t.y,r=t.z;return e[0]*=n,e[4]*=i,e[8]*=r,e[1]*=n,e[5]*=i,e[9]*=r,e[2]*=n,e[6]*=i,e[10]*=r,e[3]*=n,e[7]*=i,e[11]*=r,this}getMaxScaleOnAxis(){const t=this.elements,e=t[0]*t[0]+t[1]*t[1]+t[2]*t[2],n=t[4]*t[4]+t[5]*t[5]+t[6]*t[6],i=t[8]*t[8]+t[9]*t[9]+t[10]*t[10];return Math.sqrt(Math.max(e,n,i))}makeTranslation(t,e,n){return this.set(1,0,0,t,0,1,0,e,0,0,1,n,0,0,0,1),this}makeRotationX(t){const e=Math.cos(t),n=Math.sin(t);return this.set(1,0,0,0,0,e,-n,0,0,n,e,0,0,0,0,1),this}makeRotationY(t){const e=Math.cos(t),n=Math.sin(t);return this.set(e,0,n,0,0,1,0,0,-n,0,e,0,0,0,0,1),this}makeRotationZ(t){const e=Math.cos(t),n=Math.sin(t);return this.set(e,-n,0,0,n,e,0,0,0,0,1,0,0,0,0,1),this}makeRotationAxis(t,e){const n=Math.cos(e),i=Math.sin(e),r=1-n,s=t.x,a=t.y,o=t.z,l=r*s,c=r*a;return this.set(l*s+n,l*a-i*o,l*o+i*a,0,l*a+i*o,c*a+n,c*o-i*s,0,l*o-i*a,c*o+i*s,r*o*o+n,0,0,0,0,1),this}makeScale(t,e,n){return this.set(t,0,0,0,0,e,0,0,0,0,n,0,0,0,0,1),this}makeShear(t,e,n,i,r,s){return this.set(1,n,r,0,t,1,s,0,e,i,1,0,0,0,0,1),this}compose(t,e,n){const i=this.elements,r=e._x,s=e._y,a=e._z,o=e._w,l=r+r,c=s+s,h=a+a,u=r*l,d=r*c,p=r*h,m=s*c,f=s*h,g=a*h,v=o*l,y=o*c,x=o*h,_=n.x,b=n.y,M=n.z;return i[0]=(1-(m+g))*_,i[1]=(d+x)*_,i[2]=(p-y)*_,i[3]=0,i[4]=(d-x)*b,i[5]=(1-(u+g))*b,i[6]=(f+v)*b,i[7]=0,i[8]=(p+y)*M,i[9]=(f-v)*M,i[10]=(1-(u+m))*M,i[11]=0,i[12]=t.x,i[13]=t.y,i[14]=t.z,i[15]=1,this}decompose(t,e,n){const i=this.elements;let r=oe.set(i[0],i[1],i[2]).length();const s=oe.set(i[4],i[5],i[6]).length(),a=oe.set(i[8],i[9],i[10]).length();this.determinant()<0&&(r=-r),t.x=i[12],t.y=i[13],t.z=i[14],le.copy(this);const o=1/r,l=1/s,c=1/a;return le.elements[0]*=o,le.elements[1]*=o,le.elements[2]*=o,le.elements[4]*=l,le.elements[5]*=l,le.elements[6]*=l,le.elements[8]*=c,le.elements[9]*=c,le.elements[10]*=c,e.setFromRotationMatrix(le),n.x=r,n.y=s,n.z=a,this}makePerspective(t,e,n,i,r,s){void 0===s&&console.warn("THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.");const a=this.elements,o=2*r/(e-t),l=2*r/(n-i),c=(e+t)/(e-t),h=(n+i)/(n-i),u=-(s+r)/(s-r),d=-2*s*r/(s-r);return a[0]=o,a[4]=0,a[8]=c,a[12]=0,a[1]=0,a[5]=l,a[9]=h,a[13]=0,a[2]=0,a[6]=0,a[10]=u,a[14]=d,a[3]=0,a[7]=0,a[11]=-1,a[15]=0,this}makeOrthographic(t,e,n,i,r,s){const a=this.elements,o=1/(e-t),l=1/(n-i),c=1/(s-r),h=(e+t)*o,u=(n+i)*l,d=(s+r)*c;return a[0]=2*o,a[4]=0,a[8]=0,a[12]=-h,a[1]=0,a[5]=2*l,a[9]=0,a[13]=-u,a[2]=0,a[6]=0,a[10]=-2*c,a[14]=-d,a[3]=0,a[7]=0,a[11]=0,a[15]=1,this}equals(t){const e=this.elements,n=t.elements;for(let t=0;t<16;t++)if(e[t]!==n[t])return!1;return!0}fromArray(t,e=0){for(let n=0;n<16;n++)this.elements[n]=t[n+e];return this}toArray(t=[],e=0){const n=this.elements;return t[e]=n[0],t[e+1]=n[1],t[e+2]=n[2],t[e+3]=n[3],t[e+4]=n[4],t[e+5]=n[5],t[e+6]=n[6],t[e+7]=n[7],t[e+8]=n[8],t[e+9]=n[9],t[e+10]=n[10],t[e+11]=n[11],t[e+12]=n[12],t[e+13]=n[13],t[e+14]=n[14],t[e+15]=n[15],t}}ae.prototype.isMatrix4=!0;const oe=new Rt,le=new ae,ce=new Rt(0,0,0),he=new Rt(1,1,1),ue=new Rt,de=new Rt,pe=new Rt,me=new ae,fe=new Lt;class ge{constructor(t=0,e=0,n=0,i=ge.DefaultOrder){this._x=t,this._y=e,this._z=n,this._order=i}get x(){return this._x}set x(t){this._x=t,this._onChangeCallback()}get y(){return this._y}set y(t){this._y=t,this._onChangeCallback()}get z(){return this._z}set z(t){this._z=t,this._onChangeCallback()}get order(){return this._order}set order(t){this._order=t,this._onChangeCallback()}set(t,e,n,i=this._order){return this._x=t,this._y=e,this._z=n,this._order=i,this._onChangeCallback(),this}clone(){return new this.constructor(this._x,this._y,this._z,this._order)}copy(t){return this._x=t._x,this._y=t._y,this._z=t._z,this._order=t._order,this._onChangeCallback(),this}setFromRotationMatrix(t,e=this._order,n=!0){const i=t.elements,r=i[0],s=i[4],a=i[8],o=i[1],l=i[5],c=i[9],h=i[2],u=i[6],d=i[10];switch(e){case"XYZ":this._y=Math.asin(ht(a,-1,1)),Math.abs(a)<.9999999?(this._x=Math.atan2(-c,d),this._z=Math.atan2(-s,r)):(this._x=Math.atan2(u,l),this._z=0);break;case"YXZ":this._x=Math.asin(-ht(c,-1,1)),Math.abs(c)<.9999999?(this._y=Math.atan2(a,d),this._z=Math.atan2(o,l)):(this._y=Math.atan2(-h,r),this._z=0);break;case"ZXY":this._x=Math.asin(ht(u,-1,1)),Math.abs(u)<.9999999?(this._y=Math.atan2(-h,d),this._z=Math.atan2(-s,l)):(this._y=0,this._z=Math.atan2(o,r));break;case"ZYX":this._y=Math.asin(-ht(h,-1,1)),Math.abs(h)<.9999999?(this._x=Math.atan2(u,d),this._z=Math.atan2(o,r)):(this._x=0,this._z=Math.atan2(-s,l));break;case"YZX":this._z=Math.asin(ht(o,-1,1)),Math.abs(o)<.9999999?(this._x=Math.atan2(-c,l),this._y=Math.atan2(-h,r)):(this._x=0,this._y=Math.atan2(a,d));break;case"XZY":this._z=Math.asin(-ht(s,-1,1)),Math.abs(s)<.9999999?(this._x=Math.atan2(u,l),this._y=Math.atan2(a,r)):(this._x=Math.atan2(-c,d),this._y=0);break;default:console.warn("THREE.Euler: .setFromRotationMatrix() encountered an unknown order: "+e)}return this._order=e,!0===n&&this._onChangeCallback(),this}setFromQuaternion(t,e,n){return me.makeRotationFromQuaternion(t),this.setFromRotationMatrix(me,e,n)}setFromVector3(t,e=this._order){return this.set(t.x,t.y,t.z,e)}reorder(t){return fe.setFromEuler(this),this.setFromQuaternion(fe,t)}equals(t){return t._x===this._x&&t._y===this._y&&t._z===this._z&&t._order===this._order}fromArray(t){return this._x=t[0],this._y=t[1],this._z=t[2],void 0!==t[3]&&(this._order=t[3]),this._onChangeCallback(),this}toArray(t=[],e=0){return t[e]=this._x,t[e+1]=this._y,t[e+2]=this._z,t[e+3]=this._order,t}toVector3(t){return t?t.set(this._x,this._y,this._z):new Rt(this._x,this._y,this._z)}_onChange(t){return this._onChangeCallback=t,this}_onChangeCallback(){}}ge.prototype.isEuler=!0,ge.DefaultOrder="XYZ",ge.RotationOrders=["XYZ","YZX","ZXY","XZY","YXZ","ZYX"];class ve{constructor(){this.mask=1}set(t){this.mask=1<<t|0}enable(t){this.mask|=1<<t|0}enableAll(){this.mask=-1}toggle(t){this.mask^=1<<t|0}disable(t){this.mask&=~(1<<t|0)}disableAll(){this.mask=0}test(t){return 0!=(this.mask&t.mask)}}let ye=0;const xe=new Rt,_e=new Lt,be=new ae,Me=new Rt,we=new Rt,Se=new Rt,Te=new Lt,Ee=new Rt(1,0,0),Ae=new Rt(0,1,0),Le=new Rt(0,0,1),Re={type:"added"},Ce={type:"removed"};class Pe extends rt{constructor(){super(),Object.defineProperty(this,"id",{value:ye++}),this.uuid=ct(),this.name="",this.type="Object3D",this.parent=null,this.children=[],this.up=Pe.DefaultUp.clone();const t=new Rt,e=new ge,n=new Lt,i=new Rt(1,1,1);e._onChange((function(){n.setFromEuler(e,!1)})),n._onChange((function(){e.setFromQuaternion(n,void 0,!1)})),Object.defineProperties(this,{position:{configurable:!0,enumerable:!0,value:t},rotation:{configurable:!0,enumerable:!0,value:e},quaternion:{configurable:!0,enumerable:!0,value:n},scale:{configurable:!0,enumerable:!0,value:i},modelViewMatrix:{value:new ae},normalMatrix:{value:new yt}}),this.matrix=new ae,this.matrixWorld=new ae,this.matrixAutoUpdate=Pe.DefaultMatrixAutoUpdate,this.matrixWorldNeedsUpdate=!1,this.layers=new ve,this.visible=!0,this.castShadow=!1,this.receiveShadow=!1,this.frustumCulled=!0,this.renderOrder=0,this.animations=[],this.userData={}}onBeforeRender(){}onAfterRender(){}applyMatrix4(t){this.matrixAutoUpdate&&this.updateMatrix(),this.matrix.premultiply(t),this.matrix.decompose(this.position,this.quaternion,this.scale)}applyQuaternion(t){return this.quaternion.premultiply(t),this}setRotationFromAxisAngle(t,e){this.quaternion.setFromAxisAngle(t,e)}setRotationFromEuler(t){this.quaternion.setFromEuler(t,!0)}setRotationFromMatrix(t){this.quaternion.setFromRotationMatrix(t)}setRotationFromQuaternion(t){this.quaternion.copy(t)}rotateOnAxis(t,e){return _e.setFromAxisAngle(t,e),this.quaternion.multiply(_e),this}rotateOnWorldAxis(t,e){return _e.setFromAxisAngle(t,e),this.quaternion.premultiply(_e),this}rotateX(t){return this.rotateOnAxis(Ee,t)}rotateY(t){return this.rotateOnAxis(Ae,t)}rotateZ(t){return this.rotateOnAxis(Le,t)}translateOnAxis(t,e){return xe.copy(t).applyQuaternion(this.quaternion),this.position.add(xe.multiplyScalar(e)),this}translateX(t){return this.translateOnAxis(Ee,t)}translateY(t){return this.translateOnAxis(Ae,t)}translateZ(t){return this.translateOnAxis(Le,t)}localToWorld(t){return t.applyMatrix4(this.matrixWorld)}worldToLocal(t){return t.applyMatrix4(be.copy(this.matrixWorld).invert())}lookAt(t,e,n){t.isVector3?Me.copy(t):Me.set(t,e,n);const i=this.parent;this.updateWorldMatrix(!0,!1),we.setFromMatrixPosition(this.matrixWorld),this.isCamera||this.isLight?be.lookAt(we,Me,this.up):be.lookAt(Me,we,this.up),this.quaternion.setFromRotationMatrix(be),i&&(be.extractRotation(i.matrixWorld),_e.setFromRotationMatrix(be),this.quaternion.premultiply(_e.invert()))}add(t){if(arguments.length>1){for(let t=0;t<arguments.length;t++)this.add(arguments[t]);return this}return t===this?(console.error("THREE.Object3D.add: object can't be added as a child of itself.",t),this):(t&&t.isObject3D?(null!==t.parent&&t.parent.remove(t),t.parent=this,this.children.push(t),t.dispatchEvent(Re)):console.error("THREE.Object3D.add: object not an instance of THREE.Object3D.",t),this)}remove(t){if(arguments.length>1){for(let t=0;t<arguments.length;t++)this.remove(arguments[t]);return this}const e=this.children.indexOf(t);return-1!==e&&(t.parent=null,this.children.splice(e,1),t.dispatchEvent(Ce)),this}removeFromParent(){const t=this.parent;return null!==t&&t.remove(this),this}clear(){for(let t=0;t<this.children.length;t++){const e=this.children[t];e.parent=null,e.dispatchEvent(Ce)}return this.children.length=0,this}attach(t){return this.updateWorldMatrix(!0,!1),be.copy(this.matrixWorld).invert(),null!==t.parent&&(t.parent.updateWorldMatrix(!0,!1),be.multiply(t.parent.matrixWorld)),t.applyMatrix4(be),this.add(t),t.updateWorldMatrix(!1,!0),this}getObjectById(t){return this.getObjectByProperty("id",t)}getObjectByName(t){return this.getObjectByProperty("name",t)}getObjectByProperty(t,e){if(this[t]===e)return this;for(let n=0,i=this.children.length;n<i;n++){const i=this.children[n].getObjectByProperty(t,e);if(void 0!==i)return i}}getWorldPosition(t){return this.updateWorldMatrix(!0,!1),t.setFromMatrixPosition(this.matrixWorld)}getWorldQuaternion(t){return this.updateWorldMatrix(!0,!1),this.matrixWorld.decompose(we,t,Se),t}getWorldScale(t){return this.updateWorldMatrix(!0,!1),this.matrixWorld.decompose(we,Te,t),t}getWorldDirection(t){this.updateWorldMatrix(!0,!1);const e=this.matrixWorld.elements;return t.set(e[8],e[9],e[10]).normalize()}raycast(){}traverse(t){t(this);const e=this.children;for(let n=0,i=e.length;n<i;n++)e[n].traverse(t)}traverseVisible(t){if(!1===this.visible)return;t(this);const e=this.children;for(let n=0,i=e.length;n<i;n++)e[n].traverseVisible(t)}traverseAncestors(t){const e=this.parent;null!==e&&(t(e),e.traverseAncestors(t))}updateMatrix(){this.matrix.compose(this.position,this.quaternion,this.scale),this.matrixWorldNeedsUpdate=!0}updateMatrixWorld(t){this.matrixAutoUpdate&&this.updateMatrix(),(this.matrixWorldNeedsUpdate||t)&&(null===this.parent?this.matrixWorld.copy(this.matrix):this.matrixWorld.multiplyMatrices(this.parent.matrixWorld,this.matrix),this.matrixWorldNeedsUpdate=!1,t=!0);const e=this.children;for(let n=0,i=e.length;n<i;n++)e[n].updateMatrixWorld(t)}updateWorldMatrix(t,e){const n=this.parent;if(!0===t&&null!==n&&n.updateWorldMatrix(!0,!1),this.matrixAutoUpdate&&this.updateMatrix(),null===this.parent?this.matrixWorld.copy(this.matrix):this.matrixWorld.multiplyMatrices(this.parent.matrixWorld,this.matrix),!0===e){const t=this.children;for(let e=0,n=t.length;e<n;e++)t[e].updateWorldMatrix(!1,!0)}}toJSON(t){const e=void 0===t||"string"==typeof t,n={};e&&(t={geometries:{},materials:{},textures:{},images:{},shapes:{},skeletons:{},animations:{}},n.metadata={version:4.5,type:"Object",generator:"Object3D.toJSON"});const i={};function r(e,n){return void 0===e[n.uuid]&&(e[n.uuid]=n.toJSON(t)),n.uuid}if(i.uuid=this.uuid,i.type=this.type,""!==this.name&&(i.name=this.name),!0===this.castShadow&&(i.castShadow=!0),!0===this.receiveShadow&&(i.receiveShadow=!0),!1===this.visible&&(i.visible=!1),!1===this.frustumCulled&&(i.frustumCulled=!1),0!==this.renderOrder&&(i.renderOrder=this.renderOrder),"{}"!==JSON.stringify(this.userData)&&(i.userData=this.userData),i.layers=this.layers.mask,i.matrix=this.matrix.toArray(),!1===this.matrixAutoUpdate&&(i.matrixAutoUpdate=!1),this.isInstancedMesh&&(i.type="InstancedMesh",i.count=this.count,i.instanceMatrix=this.instanceMatrix.toJSON(),null!==this.instanceColor&&(i.instanceColor=this.instanceColor.toJSON())),this.isScene)this.background&&(this.background.isColor?i.background=this.background.toJSON():this.background.isTexture&&(i.background=this.background.toJSON(t).uuid)),this.environment&&this.environment.isTexture&&(i.environment=this.environment.toJSON(t).uuid);else if(this.isMesh||this.isLine||this.isPoints){i.geometry=r(t.geometries,this.geometry);const e=this.geometry.parameters;if(void 0!==e&&void 0!==e.shapes){const n=e.shapes;if(Array.isArray(n))for(let e=0,i=n.length;e<i;e++){const i=n[e];r(t.shapes,i)}else r(t.shapes,n)}}if(this.isSkinnedMesh&&(i.bindMode=this.bindMode,i.bindMatrix=this.bindMatrix.toArray(),void 0!==this.skeleton&&(r(t.skeletons,this.skeleton),i.skeleton=this.skeleton.uuid)),void 0!==this.material)if(Array.isArray(this.material)){const e=[];for(let n=0,i=this.material.length;n<i;n++)e.push(r(t.materials,this.material[n]));i.material=e}else i.material=r(t.materials,this.material);if(this.children.length>0){i.children=[];for(let e=0;e<this.children.length;e++)i.children.push(this.children[e].toJSON(t).object)}if(this.animations.length>0){i.animations=[];for(let e=0;e<this.animations.length;e++){const n=this.animations[e];i.animations.push(r(t.animations,n))}}if(e){const e=s(t.geometries),i=s(t.materials),r=s(t.textures),a=s(t.images),o=s(t.shapes),l=s(t.skeletons),c=s(t.animations);e.length>0&&(n.geometries=e),i.length>0&&(n.materials=i),r.length>0&&(n.textures=r),a.length>0&&(n.images=a),o.length>0&&(n.shapes=o),l.length>0&&(n.skeletons=l),c.length>0&&(n.animations=c)}return n.object=i,n;function s(t){const e=[];for(const n in t){const i=t[n];delete i.metadata,e.push(i)}return e}}clone(t){return(new this.constructor).copy(this,t)}copy(t,e=!0){if(this.name=t.name,this.up.copy(t.up),this.position.copy(t.position),this.rotation.order=t.rotation.order,this.quaternion.copy(t.quaternion),this.scale.copy(t.scale),this.matrix.copy(t.matrix),this.matrixWorld.copy(t.matrixWorld),this.matrixAutoUpdate=t.matrixAutoUpdate,this.matrixWorldNeedsUpdate=t.matrixWorldNeedsUpdate,this.layers.mask=t.layers.mask,this.visible=t.visible,this.castShadow=t.castShadow,this.receiveShadow=t.receiveShadow,this.frustumCulled=t.frustumCulled,this.renderOrder=t.renderOrder,this.userData=JSON.parse(JSON.stringify(t.userData)),!0===e)for(let e=0;e<t.children.length;e++){const n=t.children[e];this.add(n.clone())}return this}}Pe.DefaultUp=new Rt(0,1,0),Pe.DefaultMatrixAutoUpdate=!0,Pe.prototype.isObject3D=!0;const De=new Rt,Ie=new Rt,Ne=new Rt,Be=new Rt,ze=new Rt,Fe=new Rt,Oe=new Rt,He=new Rt,Ue=new Rt,Ge=new Rt;class ke{constructor(t=new Rt,e=new Rt,n=new Rt){this.a=t,this.b=e,this.c=n}static getNormal(t,e,n,i){i.subVectors(n,e),De.subVectors(t,e),i.cross(De);const r=i.lengthSq();return r>0?i.multiplyScalar(1/Math.sqrt(r)):i.set(0,0,0)}static getBarycoord(t,e,n,i,r){De.subVectors(i,e),Ie.subVectors(n,e),Ne.subVectors(t,e);const s=De.dot(De),a=De.dot(Ie),o=De.dot(Ne),l=Ie.dot(Ie),c=Ie.dot(Ne),h=s*l-a*a;if(0===h)return r.set(-2,-1,-1);const u=1/h,d=(l*o-a*c)*u,p=(s*c-a*o)*u;return r.set(1-d-p,p,d)}static containsPoint(t,e,n,i){return this.getBarycoord(t,e,n,i,Be),Be.x>=0&&Be.y>=0&&Be.x+Be.y<=1}static getUV(t,e,n,i,r,s,a,o){return this.getBarycoord(t,e,n,i,Be),o.set(0,0),o.addScaledVector(r,Be.x),o.addScaledVector(s,Be.y),o.addScaledVector(a,Be.z),o}static isFrontFacing(t,e,n,i){return De.subVectors(n,e),Ie.subVectors(t,e),De.cross(Ie).dot(i)<0}set(t,e,n){return this.a.copy(t),this.b.copy(e),this.c.copy(n),this}setFromPointsAndIndices(t,e,n,i){return this.a.copy(t[e]),this.b.copy(t[n]),this.c.copy(t[i]),this}clone(){return(new this.constructor).copy(this)}copy(t){return this.a.copy(t.a),this.b.copy(t.b),this.c.copy(t.c),this}getArea(){return De.subVectors(this.c,this.b),Ie.subVectors(this.a,this.b),.5*De.cross(Ie).length()}getMidpoint(t){return t.addVectors(this.a,this.b).add(this.c).multiplyScalar(1/3)}getNormal(t){return ke.getNormal(this.a,this.b,this.c,t)}getPlane(t){return t.setFromCoplanarPoints(this.a,this.b,this.c)}getBarycoord(t,e){return ke.getBarycoord(t,this.a,this.b,this.c,e)}getUV(t,e,n,i,r){return ke.getUV(t,this.a,this.b,this.c,e,n,i,r)}containsPoint(t){return ke.containsPoint(t,this.a,this.b,this.c)}isFrontFacing(t){return ke.isFrontFacing(this.a,this.b,this.c,t)}intersectsBox(t){return t.intersectsTriangle(this)}closestPointToPoint(t,e){const n=this.a,i=this.b,r=this.c;let s,a;ze.subVectors(i,n),Fe.subVectors(r,n),He.subVectors(t,n);const o=ze.dot(He),l=Fe.dot(He);if(o<=0&&l<=0)return e.copy(n);Ue.subVectors(t,i);const c=ze.dot(Ue),h=Fe.dot(Ue);if(c>=0&&h<=c)return e.copy(i);const u=o*h-c*l;if(u<=0&&o>=0&&c<=0)return s=o/(o-c),e.copy(n).addScaledVector(ze,s);Ge.subVectors(t,r);const d=ze.dot(Ge),p=Fe.dot(Ge);if(p>=0&&d<=p)return e.copy(r);const m=d*l-o*p;if(m<=0&&l>=0&&p<=0)return a=l/(l-p),e.copy(n).addScaledVector(Fe,a);const f=c*p-d*h;if(f<=0&&h-c>=0&&d-p>=0)return Oe.subVectors(r,i),a=(h-c)/(h-c+(d-p)),e.copy(i).addScaledVector(Oe,a);const g=1/(f+m+u);return s=m*g,a=u*g,e.copy(n).addScaledVector(ze,s).addScaledVector(Fe,a)}equals(t){return t.a.equals(this.a)&&t.b.equals(this.b)&&t.c.equals(this.c)}}let Ve=0;class We extends rt{constructor(){super(),Object.defineProperty(this,"id",{value:Ve++}),this.uuid=ct(),this.name="",this.type="Material",this.fog=!0,this.blending=1,this.side=0,this.vertexColors=!1,this.opacity=1,this.transparent=!1,this.blendSrc=204,this.blendDst=205,this.blendEquation=n,this.blendSrcAlpha=null,this.blendDstAlpha=null,this.blendEquationAlpha=null,this.depthFunc=3,this.depthTest=!0,this.depthWrite=!0,this.stencilWriteMask=255,this.stencilFunc=519,this.stencilRef=0,this.stencilFuncMask=255,this.stencilFail=tt,this.stencilZFail=tt,this.stencilZPass=tt,this.stencilWrite=!1,this.clippingPlanes=null,this.clipIntersection=!1,this.clipShadows=!1,this.shadowSide=null,this.colorWrite=!0,this.precision=null,this.polygonOffset=!1,this.polygonOffsetFactor=0,this.polygonOffsetUnits=0,this.dithering=!1,this.alphaTest=0,this.alphaToCoverage=!1,this.premultipliedAlpha=!1,this.visible=!0,this.toneMapped=!0,this.userData={},this.version=0}onBuild(){}onBeforeCompile(){}customProgramCacheKey(){return this.onBeforeCompile.toString()}setValues(t){if(void 0!==t)for(const e in t){const n=t[e];if(void 0===n){console.warn("THREE.Material: '"+e+"' parameter is undefined.");continue}if("shading"===e){console.warn("THREE."+this.type+": .shading has been removed. Use the boolean .flatShading instead."),this.flatShading=1===n;continue}const i=this[e];void 0!==i?i&&i.isColor?i.set(n):i&&i.isVector3&&n&&n.isVector3?i.copy(n):this[e]=n:console.warn("THREE."+this.type+": '"+e+"' is not a property of this material.")}}toJSON(t){const e=void 0===t||"string"==typeof t;e&&(t={textures:{},images:{}});const n={metadata:{version:4.5,type:"Material",generator:"Material.toJSON"}};function i(t){const e=[];for(const n in t){const i=t[n];delete i.metadata,e.push(i)}return e}if(n.uuid=this.uuid,n.type=this.type,""!==this.name&&(n.name=this.name),this.color&&this.color.isColor&&(n.color=this.color.getHex()),void 0!==this.roughness&&(n.roughness=this.roughness),void 0!==this.metalness&&(n.metalness=this.metalness),this.sheen&&this.sheen.isColor&&(n.sheen=this.sheen.getHex()),this.emissive&&this.emissive.isColor&&(n.emissive=this.emissive.getHex()),this.emissiveIntensity&&1!==this.emissiveIntensity&&(n.emissiveIntensity=this.emissiveIntensity),this.specular&&this.specular.isColor&&(n.specular=this.specular.getHex()),void 0!==this.shininess&&(n.shininess=this.shininess),void 0!==this.clearcoat&&(n.clearcoat=this.clearcoat),void 0!==this.clearcoatRoughness&&(n.clearcoatRoughness=this.clearcoatRoughness),this.clearcoatMap&&this.clearcoatMap.isTexture&&(n.clearcoatMap=this.clearcoatMap.toJSON(t).uuid),this.clearcoatRoughnessMap&&this.clearcoatRoughnessMap.isTexture&&(n.clearcoatRoughnessMap=this.clearcoatRoughnessMap.toJSON(t).uuid),this.clearcoatNormalMap&&this.clearcoatNormalMap.isTexture&&(n.clearcoatNormalMap=this.clearcoatNormalMap.toJSON(t).uuid,n.clearcoatNormalScale=this.clearcoatNormalScale.toArray()),this.map&&this.map.isTexture&&(n.map=this.map.toJSON(t).uuid),this.matcap&&this.matcap.isTexture&&(n.matcap=this.matcap.toJSON(t).uuid),this.alphaMap&&this.alphaMap.isTexture&&(n.alphaMap=this.alphaMap.toJSON(t).uuid),this.lightMap&&this.lightMap.isTexture&&(n.lightMap=this.lightMap.toJSON(t).uuid,n.lightMapIntensity=this.lightMapIntensity),this.aoMap&&this.aoMap.isTexture&&(n.aoMap=this.aoMap.toJSON(t).uuid,n.aoMapIntensity=this.aoMapIntensity),this.bumpMap&&this.bumpMap.isTexture&&(n.bumpMap=this.bumpMap.toJSON(t).uuid,n.bumpScale=this.bumpScale),this.normalMap&&this.normalMap.isTexture&&(n.normalMap=this.normalMap.toJSON(t).uuid,n.normalMapType=this.normalMapType,n.normalScale=this.normalScale.toArray()),this.displacementMap&&this.displacementMap.isTexture&&(n.displacementMap=this.displacementMap.toJSON(t).uuid,n.displacementScale=this.displacementScale,n.displacementBias=this.displacementBias),this.roughnessMap&&this.roughnessMap.isTexture&&(n.roughnessMap=this.roughnessMap.toJSON(t).uuid),this.metalnessMap&&this.metalnessMap.isTexture&&(n.metalnessMap=this.metalnessMap.toJSON(t).uuid),this.emissiveMap&&this.emissiveMap.isTexture&&(n.emissiveMap=this.emissiveMap.toJSON(t).uuid),this.specularMap&&this.specularMap.isTexture&&(n.specularMap=this.specularMap.toJSON(t).uuid),this.envMap&&this.envMap.isTexture&&(n.envMap=this.envMap.toJSON(t).uuid,void 0!==this.combine&&(n.combine=this.combine)),void 0!==this.envMapIntensity&&(n.envMapIntensity=this.envMapIntensity),void 0!==this.reflectivity&&(n.reflectivity=this.reflectivity),void 0!==this.refractionRatio&&(n.refractionRatio=this.refractionRatio),this.gradientMap&&this.gradientMap.isTexture&&(n.gradientMap=this.gradientMap.toJSON(t).uuid),void 0!==this.transmission&&(n.transmission=this.transmission),this.transmissionMap&&this.transmissionMap.isTexture&&(n.transmissionMap=this.transmissionMap.toJSON(t).uuid),void 0!==this.thickness&&(n.thickness=this.thickness),this.thicknessMap&&this.thicknessMap.isTexture&&(n.thicknessMap=this.thicknessMap.toJSON(t).uuid),void 0!==this.attenuationDistance&&(n.attenuationDistance=this.attenuationDistance),void 0!==this.attenuationColor&&(n.attenuationColor=this.attenuationColor.getHex()),void 0!==this.size&&(n.size=this.size),null!==this.shadowSide&&(n.shadowSide=this.shadowSide),void 0!==this.sizeAttenuation&&(n.sizeAttenuation=this.sizeAttenuation),1!==this.blending&&(n.blending=this.blending),0!==this.side&&(n.side=this.side),this.vertexColors&&(n.vertexColors=!0),this.opacity<1&&(n.opacity=this.opacity),!0===this.transparent&&(n.transparent=this.transparent),n.depthFunc=this.depthFunc,n.depthTest=this.depthTest,n.depthWrite=this.depthWrite,n.colorWrite=this.colorWrite,n.stencilWrite=this.stencilWrite,n.stencilWriteMask=this.stencilWriteMask,n.stencilFunc=this.stencilFunc,n.stencilRef=this.stencilRef,n.stencilFuncMask=this.stencilFuncMask,n.stencilFail=this.stencilFail,n.stencilZFail=this.stencilZFail,n.stencilZPass=this.stencilZPass,this.rotation&&0!==this.rotation&&(n.rotation=this.rotation),!0===this.polygonOffset&&(n.polygonOffset=!0),0!==this.polygonOffsetFactor&&(n.polygonOffsetFactor=this.polygonOffsetFactor),0!==this.polygonOffsetUnits&&(n.polygonOffsetUnits=this.polygonOffsetUnits),this.linewidth&&1!==this.linewidth&&(n.linewidth=this.linewidth),void 0!==this.dashSize&&(n.dashSize=this.dashSize),void 0!==this.gapSize&&(n.gapSize=this.gapSize),void 0!==this.scale&&(n.scale=this.scale),!0===this.dithering&&(n.dithering=!0),this.alphaTest>0&&(n.alphaTest=this.alphaTest),!0===this.alphaToCoverage&&(n.alphaToCoverage=this.alphaToCoverage),!0===this.premultipliedAlpha&&(n.premultipliedAlpha=this.premultipliedAlpha),!0===this.wireframe&&(n.wireframe=this.wireframe),this.wireframeLinewidth>1&&(n.wireframeLinewidth=this.wireframeLinewidth),"round"!==this.wireframeLinecap&&(n.wireframeLinecap=this.wireframeLinecap),"round"!==this.wireframeLinejoin&&(n.wireframeLinejoin=this.wireframeLinejoin),!0===this.morphTargets&&(n.morphTargets=!0),!0===this.morphNormals&&(n.morphNormals=!0),!0===this.flatShading&&(n.flatShading=this.flatShading),!1===this.visible&&(n.visible=!1),!1===this.toneMapped&&(n.toneMapped=!1),"{}"!==JSON.stringify(this.userData)&&(n.userData=this.userData),e){const e=i(t.textures),r=i(t.images);e.length>0&&(n.textures=e),r.length>0&&(n.images=r)}return n}clone(){return(new this.constructor).copy(this)}copy(t){this.name=t.name,this.fog=t.fog,this.blending=t.blending,this.side=t.side,this.vertexColors=t.vertexColors,this.opacity=t.opacity,this.transparent=t.transparent,this.blendSrc=t.blendSrc,this.blendDst=t.blendDst,this.blendEquation=t.blendEquation,this.blendSrcAlpha=t.blendSrcAlpha,this.blendDstAlpha=t.blendDstAlpha,this.blendEquationAlpha=t.blendEquationAlpha,this.depthFunc=t.depthFunc,this.depthTest=t.depthTest,this.depthWrite=t.depthWrite,this.stencilWriteMask=t.stencilWriteMask,this.stencilFunc=t.stencilFunc,this.stencilRef=t.stencilRef,this.stencilFuncMask=t.stencilFuncMask,this.stencilFail=t.stencilFail,this.stencilZFail=t.stencilZFail,this.stencilZPass=t.stencilZPass,this.stencilWrite=t.stencilWrite;const e=t.clippingPlanes;let n=null;if(null!==e){const t=e.length;n=new Array(t);for(let i=0;i!==t;++i)n[i]=e[i].clone()}return this.clippingPlanes=n,this.clipIntersection=t.clipIntersection,this.clipShadows=t.clipShadows,this.shadowSide=t.shadowSide,this.colorWrite=t.colorWrite,this.precision=t.precision,this.polygonOffset=t.polygonOffset,this.polygonOffsetFactor=t.polygonOffsetFactor,this.polygonOffsetUnits=t.polygonOffsetUnits,this.dithering=t.dithering,this.alphaTest=t.alphaTest,this.alphaToCoverage=t.alphaToCoverage,this.premultipliedAlpha=t.premultipliedAlpha,this.visible=t.visible,this.toneMapped=t.toneMapped,this.userData=JSON.parse(JSON.stringify(t.userData)),this}dispose(){this.dispatchEvent({type:"dispose"})}set needsUpdate(t){!0===t&&this.version++}}We.prototype.isMaterial=!0;const je={aliceblue:15792383,antiquewhite:16444375,aqua:65535,aquamarine:8388564,azure:15794175,beige:16119260,bisque:16770244,black:0,blanchedalmond:16772045,blue:255,blueviolet:9055202,brown:10824234,burlywood:14596231,cadetblue:6266528,chartreuse:8388352,chocolate:13789470,coral:16744272,cornflowerblue:6591981,cornsilk:16775388,crimson:14423100,cyan:65535,darkblue:139,darkcyan:35723,darkgoldenrod:12092939,darkgray:11119017,darkgreen:25600,darkgrey:11119017,darkkhaki:12433259,darkmagenta:9109643,darkolivegreen:5597999,darkorange:16747520,darkorchid:10040012,darkred:9109504,darksalmon:15308410,darkseagreen:9419919,darkslateblue:4734347,darkslategray:3100495,darkslategrey:3100495,darkturquoise:52945,darkviolet:9699539,deeppink:16716947,deepskyblue:49151,dimgray:6908265,dimgrey:6908265,dodgerblue:2003199,firebrick:11674146,floralwhite:16775920,forestgreen:2263842,fuchsia:16711935,gainsboro:14474460,ghostwhite:16316671,gold:16766720,goldenrod:14329120,gray:8421504,green:32768,greenyellow:11403055,grey:8421504,honeydew:15794160,hotpink:16738740,indianred:13458524,indigo:4915330,ivory:16777200,khaki:15787660,lavender:15132410,lavenderblush:16773365,lawngreen:8190976,lemonchiffon:16775885,lightblue:11393254,lightcoral:15761536,lightcyan:14745599,lightgoldenrodyellow:16448210,lightgray:13882323,lightgreen:9498256,lightgrey:13882323,lightpink:16758465,lightsalmon:16752762,lightseagreen:2142890,lightskyblue:8900346,lightslategray:7833753,lightslategrey:7833753,lightsteelblue:11584734,lightyellow:16777184,lime:65280,limegreen:3329330,linen:16445670,magenta:16711935,maroon:8388608,mediumaquamarine:6737322,mediumblue:205,mediumorchid:12211667,mediumpurple:9662683,mediumseagreen:3978097,mediumslateblue:8087790,mediumspringgreen:64154,mediumturquoise:4772300,mediumvioletred:13047173,midnightblue:1644912,mintcream:16121850,mistyrose:16770273,moccasin:16770229,navajowhite:16768685,navy:128,oldlace:16643558,olive:8421376,olivedrab:7048739,orange:16753920,orangered:16729344,orchid:14315734,palegoldenrod:15657130,palegreen:10025880,paleturquoise:11529966,palevioletred:14381203,papayawhip:16773077,peachpuff:16767673,peru:13468991,pink:16761035,plum:14524637,powderblue:11591910,purple:8388736,rebeccapurple:6697881,red:16711680,rosybrown:12357519,royalblue:4286945,saddlebrown:9127187,salmon:16416882,sandybrown:16032864,seagreen:3050327,seashell:16774638,sienna:10506797,silver:12632256,skyblue:8900331,slateblue:6970061,slategray:7372944,slategrey:7372944,snow:16775930,springgreen:65407,steelblue:4620980,tan:13808780,teal:32896,thistle:14204888,tomato:16737095,turquoise:4251856,violet:15631086,wheat:16113331,white:16777215,whitesmoke:16119285,yellow:16776960,yellowgreen:10145074},qe={h:0,s:0,l:0},Xe={h:0,s:0,l:0};function Ye(t,e,n){return n<0&&(n+=1),n>1&&(n-=1),n<1/6?t+6*(e-t)*n:n<.5?e:n<2/3?t+6*(e-t)*(2/3-n):t}function Je(t){return t<.04045?.0773993808*t:Math.pow(.9478672986*t+.0521327014,2.4)}function Ze(t){return t<.0031308?12.92*t:1.055*Math.pow(t,.41666)-.055}class Qe{constructor(t,e,n){return void 0===e&&void 0===n?this.set(t):this.setRGB(t,e,n)}set(t){return t&&t.isColor?this.copy(t):"number"==typeof t?this.setHex(t):"string"==typeof t&&this.setStyle(t),this}setScalar(t){return this.r=t,this.g=t,this.b=t,this}setHex(t){return t=Math.floor(t),this.r=(t>>16&255)/255,this.g=(t>>8&255)/255,this.b=(255&t)/255,this}setRGB(t,e,n){return this.r=t,this.g=e,this.b=n,this}setHSL(t,e,n){if(t=ut(t,1),e=ht(e,0,1),n=ht(n,0,1),0===e)this.r=this.g=this.b=n;else{const i=n<=.5?n*(1+e):n+e-n*e,r=2*n-i;this.r=Ye(r,i,t+1/3),this.g=Ye(r,i,t),this.b=Ye(r,i,t-1/3)}return this}setStyle(t){function e(e){void 0!==e&&parseFloat(e)<1&&console.warn("THREE.Color: Alpha component of "+t+" will be ignored.")}let n;if(n=/^((?:rgb|hsl)a?)\(([^\)]*)\)/.exec(t)){let t;const i=n[1],r=n[2];switch(i){case"rgb":case"rgba":if(t=/^\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(r))return this.r=Math.min(255,parseInt(t[1],10))/255,this.g=Math.min(255,parseInt(t[2],10))/255,this.b=Math.min(255,parseInt(t[3],10))/255,e(t[4]),this;if(t=/^\s*(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(r))return this.r=Math.min(100,parseInt(t[1],10))/100,this.g=Math.min(100,parseInt(t[2],10))/100,this.b=Math.min(100,parseInt(t[3],10))/100,e(t[4]),this;break;case"hsl":case"hsla":if(t=/^\s*(\d*\.?\d+)\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(r)){const n=parseFloat(t[1])/360,i=parseInt(t[2],10)/100,r=parseInt(t[3],10)/100;return e(t[4]),this.setHSL(n,i,r)}}}else if(n=/^\#([A-Fa-f\d]+)$/.exec(t)){const t=n[1],e=t.length;if(3===e)return this.r=parseInt(t.charAt(0)+t.charAt(0),16)/255,this.g=parseInt(t.charAt(1)+t.charAt(1),16)/255,this.b=parseInt(t.charAt(2)+t.charAt(2),16)/255,this;if(6===e)return this.r=parseInt(t.charAt(0)+t.charAt(1),16)/255,this.g=parseInt(t.charAt(2)+t.charAt(3),16)/255,this.b=parseInt(t.charAt(4)+t.charAt(5),16)/255,this}return t&&t.length>0?this.setColorName(t):this}setColorName(t){const e=je[t.toLowerCase()];return void 0!==e?this.setHex(e):console.warn("THREE.Color: Unknown color "+t),this}clone(){return new this.constructor(this.r,this.g,this.b)}copy(t){return this.r=t.r,this.g=t.g,this.b=t.b,this}copyGammaToLinear(t,e=2){return this.r=Math.pow(t.r,e),this.g=Math.pow(t.g,e),this.b=Math.pow(t.b,e),this}copyLinearToGamma(t,e=2){const n=e>0?1/e:1;return this.r=Math.pow(t.r,n),this.g=Math.pow(t.g,n),this.b=Math.pow(t.b,n),this}convertGammaToLinear(t){return this.copyGammaToLinear(this,t),this}convertLinearToGamma(t){return this.copyLinearToGamma(this,t),this}copySRGBToLinear(t){return this.r=Je(t.r),this.g=Je(t.g),this.b=Je(t.b),this}copyLinearToSRGB(t){return this.r=Ze(t.r),this.g=Ze(t.g),this.b=Ze(t.b),this}convertSRGBToLinear(){return this.copySRGBToLinear(this),this}convertLinearToSRGB(){return this.copyLinearToSRGB(this),this}getHex(){return 255*this.r<<16^255*this.g<<8^255*this.b<<0}getHexString(){return("000000"+this.getHex().toString(16)).slice(-6)}getHSL(t){const e=this.r,n=this.g,i=this.b,r=Math.max(e,n,i),s=Math.min(e,n,i);let a,o;const l=(s+r)/2;if(s===r)a=0,o=0;else{const t=r-s;switch(o=l<=.5?t/(r+s):t/(2-r-s),r){case e:a=(n-i)/t+(n<i?6:0);break;case n:a=(i-e)/t+2;break;case i:a=(e-n)/t+4}a/=6}return t.h=a,t.s=o,t.l=l,t}getStyle(){return"rgb("+(255*this.r|0)+","+(255*this.g|0)+","+(255*this.b|0)+")"}offsetHSL(t,e,n){return this.getHSL(qe),qe.h+=t,qe.s+=e,qe.l+=n,this.setHSL(qe.h,qe.s,qe.l),this}add(t){return this.r+=t.r,this.g+=t.g,this.b+=t.b,this}addColors(t,e){return this.r=t.r+e.r,this.g=t.g+e.g,this.b=t.b+e.b,this}addScalar(t){return this.r+=t,this.g+=t,this.b+=t,this}sub(t){return this.r=Math.max(0,this.r-t.r),this.g=Math.max(0,this.g-t.g),this.b=Math.max(0,this.b-t.b),this}multiply(t){return this.r*=t.r,this.g*=t.g,this.b*=t.b,this}multiplyScalar(t){return this.r*=t,this.g*=t,this.b*=t,this}lerp(t,e){return this.r+=(t.r-this.r)*e,this.g+=(t.g-this.g)*e,this.b+=(t.b-this.b)*e,this}lerpColors(t,e,n){return this.r=t.r+(e.r-t.r)*n,this.g=t.g+(e.g-t.g)*n,this.b=t.b+(e.b-t.b)*n,this}lerpHSL(t,e){this.getHSL(qe),t.getHSL(Xe);const n=dt(qe.h,Xe.h,e),i=dt(qe.s,Xe.s,e),r=dt(qe.l,Xe.l,e);return this.setHSL(n,i,r),this}equals(t){return t.r===this.r&&t.g===this.g&&t.b===this.b}fromArray(t,e=0){return this.r=t[e],this.g=t[e+1],this.b=t[e+2],this}toArray(t=[],e=0){return t[e]=this.r,t[e+1]=this.g,t[e+2]=this.b,t}fromBufferAttribute(t,e){return this.r=t.getX(e),this.g=t.getY(e),this.b=t.getZ(e),!0===t.normalized&&(this.r/=255,this.g/=255,this.b/=255),this}toJSON(){return this.getHex()}}Qe.NAMES=je,Qe.prototype.isColor=!0,Qe.prototype.r=1,Qe.prototype.g=1,Qe.prototype.b=1;class Ke extends We{constructor(t){super(),this.type="MeshBasicMaterial",this.color=new Qe(16777215),this.map=null,this.lightMap=null,this.lightMapIntensity=1,this.aoMap=null,this.aoMapIntensity=1,this.specularMap=null,this.alphaMap=null,this.envMap=null,this.combine=0,this.reflectivity=1,this.refractionRatio=.98,this.wireframe=!1,this.wireframeLinewidth=1,this.wireframeLinecap="round",this.wireframeLinejoin="round",this.morphTargets=!1,this.setValues(t)}copy(t){return super.copy(t),this.color.copy(t.color),this.map=t.map,this.lightMap=t.lightMap,this.lightMapIntensity=t.lightMapIntensity,this.aoMap=t.aoMap,this.aoMapIntensity=t.aoMapIntensity,this.specularMap=t.specularMap,this.alphaMap=t.alphaMap,this.envMap=t.envMap,this.combine=t.combine,this.reflectivity=t.reflectivity,this.refractionRatio=t.refractionRatio,this.wireframe=t.wireframe,this.wireframeLinewidth=t.wireframeLinewidth,this.wireframeLinecap=t.wireframeLinecap,this.wireframeLinejoin=t.wireframeLinejoin,this.morphTargets=t.morphTargets,this}}Ke.prototype.isMeshBasicMaterial=!0;const $e=new Rt,tn=new vt;class en{constructor(t,e,n){if(Array.isArray(t))throw new TypeError("THREE.BufferAttribute: array should be a Typed Array.");this.name="",this.array=t,this.itemSize=e,this.count=void 0!==t?t.length/e:0,this.normalized=!0===n,this.usage=et,this.updateRange={offset:0,count:-1},this.version=0}onUploadCallback(){}set needsUpdate(t){!0===t&&this.version++}setUsage(t){return this.usage=t,this}copy(t){return this.name=t.name,this.array=new t.array.constructor(t.array),this.itemSize=t.itemSize,this.count=t.count,this.normalized=t.normalized,this.usage=t.usage,this}copyAt(t,e,n){t*=this.itemSize,n*=e.itemSize;for(let i=0,r=this.itemSize;i<r;i++)this.array[t+i]=e.array[n+i];return this}copyArray(t){return this.array.set(t),this}copyColorsArray(t){const e=this.array;let n=0;for(let i=0,r=t.length;i<r;i++){let r=t[i];void 0===r&&(console.warn("THREE.BufferAttribute.copyColorsArray(): color is undefined",i),r=new Qe),e[n++]=r.r,e[n++]=r.g,e[n++]=r.b}return this}copyVector2sArray(t){const e=this.array;let n=0;for(let i=0,r=t.length;i<r;i++){let r=t[i];void 0===r&&(console.warn("THREE.BufferAttribute.copyVector2sArray(): vector is undefined",i),r=new vt),e[n++]=r.x,e[n++]=r.y}return this}copyVector3sArray(t){const e=this.array;let n=0;for(let i=0,r=t.length;i<r;i++){let r=t[i];void 0===r&&(console.warn("THREE.BufferAttribute.copyVector3sArray(): vector is undefined",i),r=new Rt),e[n++]=r.x,e[n++]=r.y,e[n++]=r.z}return this}copyVector4sArray(t){const e=this.array;let n=0;for(let i=0,r=t.length;i<r;i++){let r=t[i];void 0===r&&(console.warn("THREE.BufferAttribute.copyVector4sArray(): vector is undefined",i),r=new St),e[n++]=r.x,e[n++]=r.y,e[n++]=r.z,e[n++]=r.w}return this}applyMatrix3(t){if(2===this.itemSize)for(let e=0,n=this.count;e<n;e++)tn.fromBufferAttribute(this,e),tn.applyMatrix3(t),this.setXY(e,tn.x,tn.y);else if(3===this.itemSize)for(let e=0,n=this.count;e<n;e++)$e.fromBufferAttribute(this,e),$e.applyMatrix3(t),this.setXYZ(e,$e.x,$e.y,$e.z);return this}applyMatrix4(t){for(let e=0,n=this.count;e<n;e++)$e.x=this.getX(e),$e.y=this.getY(e),$e.z=this.getZ(e),$e.applyMatrix4(t),this.setXYZ(e,$e.x,$e.y,$e.z);return this}applyNormalMatrix(t){for(let e=0,n=this.count;e<n;e++)$e.x=this.getX(e),$e.y=this.getY(e),$e.z=this.getZ(e),$e.applyNormalMatrix(t),this.setXYZ(e,$e.x,$e.y,$e.z);return this}transformDirection(t){for(let e=0,n=this.count;e<n;e++)$e.x=this.getX(e),$e.y=this.getY(e),$e.z=this.getZ(e),$e.transformDirection(t),this.setXYZ(e,$e.x,$e.y,$e.z);return this}set(t,e=0){return this.array.set(t,e),this}getX(t){return this.array[t*this.itemSize]}setX(t,e){return this.array[t*this.itemSize]=e,this}getY(t){return this.array[t*this.itemSize+1]}setY(t,e){return this.array[t*this.itemSize+1]=e,this}getZ(t){return this.array[t*this.itemSize+2]}setZ(t,e){return this.array[t*this.itemSize+2]=e,this}getW(t){return this.array[t*this.itemSize+3]}setW(t,e){return this.array[t*this.itemSize+3]=e,this}setXY(t,e,n){return t*=this.itemSize,this.array[t+0]=e,this.array[t+1]=n,this}setXYZ(t,e,n,i){return t*=this.itemSize,this.array[t+0]=e,this.array[t+1]=n,this.array[t+2]=i,this}setXYZW(t,e,n,i,r){return t*=this.itemSize,this.array[t+0]=e,this.array[t+1]=n,this.array[t+2]=i,this.array[t+3]=r,this}onUpload(t){return this.onUploadCallback=t,this}clone(){return new this.constructor(this.array,this.itemSize).copy(this)}toJSON(){const t={itemSize:this.itemSize,type:this.array.constructor.name,array:Array.prototype.slice.call(this.array),normalized:this.normalized};return""!==this.name&&(t.name=this.name),this.usage!==et&&(t.usage=this.usage),0===this.updateRange.offset&&-1===this.updateRange.count||(t.updateRange=this.updateRange),t}}en.prototype.isBufferAttribute=!0;class nn extends en{constructor(t,e,n){super(new Int8Array(t),e,n)}}class rn extends en{constructor(t,e,n){super(new Uint8Array(t),e,n)}}class sn extends en{constructor(t,e,n){super(new Uint8ClampedArray(t),e,n)}}class an extends en{constructor(t,e,n){super(new Int16Array(t),e,n)}}class on extends en{constructor(t,e,n){super(new Uint16Array(t),e,n)}}class ln extends en{constructor(t,e,n){super(new Int32Array(t),e,n)}}class cn extends en{constructor(t,e,n){super(new Uint32Array(t),e,n)}}class hn extends en{constructor(t,e,n){super(new Uint16Array(t),e,n)}}hn.prototype.isFloat16BufferAttribute=!0;class un extends en{constructor(t,e,n){super(new Float32Array(t),e,n)}}class dn extends en{constructor(t,e,n){super(new Float64Array(t),e,n)}}function pn(t){if(0===t.length)return-1/0;let e=t[0];for(let n=1,i=t.length;n<i;++n)t[n]>e&&(e=t[n]);return e}const mn={Int8Array:Int8Array,Uint8Array:Uint8Array,Uint8ClampedArray:Uint8ClampedArray,Int16Array:Int16Array,Uint16Array:Uint16Array,Int32Array:Int32Array,Uint32Array:Uint32Array,Float32Array:Float32Array,Float64Array:Float64Array};function fn(t,e){return new mn[t](e)}let gn=0;const vn=new ae,yn=new Pe,xn=new Rt,_n=new Dt,bn=new Dt,Mn=new Rt;class wn extends rt{constructor(){super(),Object.defineProperty(this,"id",{value:gn++}),this.uuid=ct(),this.name="",this.type="BufferGeometry",this.index=null,this.attributes={},this.morphAttributes={},this.morphTargetsRelative=!1,this.groups=[],this.boundingBox=null,this.boundingSphere=null,this.drawRange={start:0,count:1/0},this.userData={}}getIndex(){return this.index}setIndex(t){return Array.isArray(t)?this.index=new(pn(t)>65535?cn:on)(t,1):this.index=t,this}getAttribute(t){return this.attributes[t]}setAttribute(t,e){return this.attributes[t]=e,this}deleteAttribute(t){return delete this.attributes[t],this}hasAttribute(t){return void 0!==this.attributes[t]}addGroup(t,e,n=0){this.groups.push({start:t,count:e,materialIndex:n})}clearGroups(){this.groups=[]}setDrawRange(t,e){this.drawRange.start=t,this.drawRange.count=e}applyMatrix4(t){const e=this.attributes.position;void 0!==e&&(e.applyMatrix4(t),e.needsUpdate=!0);const n=this.attributes.normal;if(void 0!==n){const e=(new yt).getNormalMatrix(t);n.applyNormalMatrix(e),n.needsUpdate=!0}const i=this.attributes.tangent;return void 0!==i&&(i.transformDirection(t),i.needsUpdate=!0),null!==this.boundingBox&&this.computeBoundingBox(),null!==this.boundingSphere&&this.computeBoundingSphere(),this}applyQuaternion(t){return vn.makeRotationFromQuaternion(t),this.applyMatrix4(vn),this}rotateX(t){return vn.makeRotationX(t),this.applyMatrix4(vn),this}rotateY(t){return vn.makeRotationY(t),this.applyMatrix4(vn),this}rotateZ(t){return vn.makeRotationZ(t),this.applyMatrix4(vn),this}translate(t,e,n){return vn.makeTranslation(t,e,n),this.applyMatrix4(vn),this}scale(t,e,n){return vn.makeScale(t,e,n),this.applyMatrix4(vn),this}lookAt(t){return yn.lookAt(t),yn.updateMatrix(),this.applyMatrix4(yn.matrix),this}center(){return this.computeBoundingBox(),this.boundingBox.getCenter(xn).negate(),this.translate(xn.x,xn.y,xn.z),this}setFromPoints(t){const e=[];for(let n=0,i=t.length;n<i;n++){const i=t[n];e.push(i.x,i.y,i.z||0)}return this.setAttribute("position",new un(e,3)),this}computeBoundingBox(){null===this.boundingBox&&(this.boundingBox=new Dt);const t=this.attributes.position,e=this.morphAttributes.position;if(t&&t.isGLBufferAttribute)return console.error('THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set "mesh.frustumCulled" to "false".',this),void this.boundingBox.set(new Rt(-1/0,-1/0,-1/0),new Rt(1/0,1/0,1/0));if(void 0!==t){if(this.boundingBox.setFromBufferAttribute(t),e)for(let t=0,n=e.length;t<n;t++){const n=e[t];_n.setFromBufferAttribute(n),this.morphTargetsRelative?(Mn.addVectors(this.boundingBox.min,_n.min),this.boundingBox.expandByPoint(Mn),Mn.addVectors(this.boundingBox.max,_n.max),this.boundingBox.expandByPoint(Mn)):(this.boundingBox.expandByPoint(_n.min),this.boundingBox.expandByPoint(_n.max))}}else this.boundingBox.makeEmpty();(isNaN(this.boundingBox.min.x)||isNaN(this.boundingBox.min.y)||isNaN(this.boundingBox.min.z))&&console.error('THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.',this)}computeBoundingSphere(){null===this.boundingSphere&&(this.boundingSphere=new Qt);const t=this.attributes.position,e=this.morphAttributes.position;if(t&&t.isGLBufferAttribute)return console.error('THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set "mesh.frustumCulled" to "false".',this),void this.boundingSphere.set(new Rt,1/0);if(t){const n=this.boundingSphere.center;if(_n.setFromBufferAttribute(t),e)for(let t=0,n=e.length;t<n;t++){const n=e[t];bn.setFromBufferAttribute(n),this.morphTargetsRelative?(Mn.addVectors(_n.min,bn.min),_n.expandByPoint(Mn),Mn.addVectors(_n.max,bn.max),_n.expandByPoint(Mn)):(_n.expandByPoint(bn.min),_n.expandByPoint(bn.max))}_n.getCenter(n);let i=0;for(let e=0,r=t.count;e<r;e++)Mn.fromBufferAttribute(t,e),i=Math.max(i,n.distanceToSquared(Mn));if(e)for(let r=0,s=e.length;r<s;r++){const s=e[r],a=this.morphTargetsRelative;for(let e=0,r=s.count;e<r;e++)Mn.fromBufferAttribute(s,e),a&&(xn.fromBufferAttribute(t,e),Mn.add(xn)),i=Math.max(i,n.distanceToSquared(Mn))}this.boundingSphere.radius=Math.sqrt(i),isNaN(this.boundingSphere.radius)&&console.error('THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.',this)}}computeFaceNormals(){}computeTangents(){const t=this.index,e=this.attributes;if(null===t||void 0===e.position||void 0===e.normal||void 0===e.uv)return void console.error("THREE.BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)");const n=t.array,i=e.position.array,r=e.normal.array,s=e.uv.array,a=i.length/3;void 0===e.tangent&&this.setAttribute("tangent",new en(new Float32Array(4*a),4));const o=e.tangent.array,l=[],c=[];for(let t=0;t<a;t++)l[t]=new Rt,c[t]=new Rt;const h=new Rt,u=new Rt,d=new Rt,p=new vt,m=new vt,f=new vt,g=new Rt,v=new Rt;function y(t,e,n){h.fromArray(i,3*t),u.fromArray(i,3*e),d.fromArray(i,3*n),p.fromArray(s,2*t),m.fromArray(s,2*e),f.fromArray(s,2*n),u.sub(h),d.sub(h),m.sub(p),f.sub(p);const r=1/(m.x*f.y-f.x*m.y);isFinite(r)&&(g.copy(u).multiplyScalar(f.y).addScaledVector(d,-m.y).multiplyScalar(r),v.copy(d).multiplyScalar(m.x).addScaledVector(u,-f.x).multiplyScalar(r),l[t].add(g),l[e].add(g),l[n].add(g),c[t].add(v),c[e].add(v),c[n].add(v))}let x=this.groups;0===x.length&&(x=[{start:0,count:n.length}]);for(let t=0,e=x.length;t<e;++t){const e=x[t],i=e.start;for(let t=i,r=i+e.count;t<r;t+=3)y(n[t+0],n[t+1],n[t+2])}const _=new Rt,b=new Rt,M=new Rt,w=new Rt;function S(t){M.fromArray(r,3*t),w.copy(M);const e=l[t];_.copy(e),_.sub(M.multiplyScalar(M.dot(e))).normalize(),b.crossVectors(w,e);const n=b.dot(c[t])<0?-1:1;o[4*t]=_.x,o[4*t+1]=_.y,o[4*t+2]=_.z,o[4*t+3]=n}for(let t=0,e=x.length;t<e;++t){const e=x[t],i=e.start;for(let t=i,r=i+e.count;t<r;t+=3)S(n[t+0]),S(n[t+1]),S(n[t+2])}}computeVertexNormals(){const t=this.index,e=this.getAttribute("position");if(void 0!==e){let n=this.getAttribute("normal");if(void 0===n)n=new en(new Float32Array(3*e.count),3),this.setAttribute("normal",n);else for(let t=0,e=n.count;t<e;t++)n.setXYZ(t,0,0,0);const i=new Rt,r=new Rt,s=new Rt,a=new Rt,o=new Rt,l=new Rt,c=new Rt,h=new Rt;if(t)for(let u=0,d=t.count;u<d;u+=3){const d=t.getX(u+0),p=t.getX(u+1),m=t.getX(u+2);i.fromBufferAttribute(e,d),r.fromBufferAttribute(e,p),s.fromBufferAttribute(e,m),c.subVectors(s,r),h.subVectors(i,r),c.cross(h),a.fromBufferAttribute(n,d),o.fromBufferAttribute(n,p),l.fromBufferAttribute(n,m),a.add(c),o.add(c),l.add(c),n.setXYZ(d,a.x,a.y,a.z),n.setXYZ(p,o.x,o.y,o.z),n.setXYZ(m,l.x,l.y,l.z)}else for(let t=0,a=e.count;t<a;t+=3)i.fromBufferAttribute(e,t+0),r.fromBufferAttribute(e,t+1),s.fromBufferAttribute(e,t+2),c.subVectors(s,r),h.subVectors(i,r),c.cross(h),n.setXYZ(t+0,c.x,c.y,c.z),n.setXYZ(t+1,c.x,c.y,c.z),n.setXYZ(t+2,c.x,c.y,c.z);this.normalizeNormals(),n.needsUpdate=!0}}merge(t,e){if(!t||!t.isBufferGeometry)return void console.error("THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.",t);void 0===e&&(e=0,console.warn("THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge."));const n=this.attributes;for(const i in n){if(void 0===t.attributes[i])continue;const r=n[i].array,s=t.attributes[i],a=s.array,o=s.itemSize*e,l=Math.min(a.length,r.length-o);for(let t=0,e=o;t<l;t++,e++)r[e]=a[t]}return this}normalizeNormals(){const t=this.attributes.normal;for(let e=0,n=t.count;e<n;e++)Mn.fromBufferAttribute(t,e),Mn.normalize(),t.setXYZ(e,Mn.x,Mn.y,Mn.z)}toNonIndexed(){function t(t,e){const n=t.array,i=t.itemSize,r=t.normalized,s=new n.constructor(e.length*i);let a=0,o=0;for(let r=0,l=e.length;r<l;r++){a=t.isInterleavedBufferAttribute?e[r]*t.data.stride+t.offset:e[r]*i;for(let t=0;t<i;t++)s[o++]=n[a++]}return new en(s,i,r)}if(null===this.index)return console.warn("THREE.BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed."),this;const e=new wn,n=this.index.array,i=this.attributes;for(const r in i){const s=t(i[r],n);e.setAttribute(r,s)}const r=this.morphAttributes;for(const i in r){const s=[],a=r[i];for(let e=0,i=a.length;e<i;e++){const i=t(a[e],n);s.push(i)}e.morphAttributes[i]=s}e.morphTargetsRelative=this.morphTargetsRelative;const s=this.groups;for(let t=0,n=s.length;t<n;t++){const n=s[t];e.addGroup(n.start,n.count,n.materialIndex)}return e}toJSON(){const t={metadata:{version:4.5,type:"BufferGeometry",generator:"BufferGeometry.toJSON"}};if(t.uuid=this.uuid,t.type=this.type,""!==this.name&&(t.name=this.name),Object.keys(this.userData).length>0&&(t.userData=this.userData),void 0!==this.parameters){const e=this.parameters;for(const n in e)void 0!==e[n]&&(t[n]=e[n]);return t}t.data={attributes:{}};const e=this.index;null!==e&&(t.data.index={type:e.array.constructor.name,array:Array.prototype.slice.call(e.array)});const n=this.attributes;for(const e in n){const i=n[e];t.data.attributes[e]=i.toJSON(t.data)}const i={};let r=!1;for(const e in this.morphAttributes){const n=this.morphAttributes[e],s=[];for(let e=0,i=n.length;e<i;e++){const i=n[e];s.push(i.toJSON(t.data))}s.length>0&&(i[e]=s,r=!0)}r&&(t.data.morphAttributes=i,t.data.morphTargetsRelative=this.morphTargetsRelative);const s=this.groups;s.length>0&&(t.data.groups=JSON.parse(JSON.stringify(s)));const a=this.boundingSphere;return null!==a&&(t.data.boundingSphere={center:a.center.toArray(),radius:a.radius}),t}clone(){return(new wn).copy(this)}copy(t){this.index=null,this.attributes={},this.morphAttributes={},this.groups=[],this.boundingBox=null,this.boundingSphere=null;const e={};this.name=t.name;const n=t.index;null!==n&&this.setIndex(n.clone(e));const i=t.attributes;for(const t in i){const n=i[t];this.setAttribute(t,n.clone(e))}const r=t.morphAttributes;for(const t in r){const n=[],i=r[t];for(let t=0,r=i.length;t<r;t++)n.push(i[t].clone(e));this.morphAttributes[t]=n}this.morphTargetsRelative=t.morphTargetsRelative;const s=t.groups;for(let t=0,e=s.length;t<e;t++){const e=s[t];this.addGroup(e.start,e.count,e.materialIndex)}const a=t.boundingBox;null!==a&&(this.boundingBox=a.clone());const o=t.boundingSphere;return null!==o&&(this.boundingSphere=o.clone()),this.drawRange.start=t.drawRange.start,this.drawRange.count=t.drawRange.count,this.userData=t.userData,this}dispose(){this.dispatchEvent({type:"dispose"})}}wn.prototype.isBufferGeometry=!0;const Sn=new ae,Tn=new se,En=new Qt,An=new Rt,Ln=new Rt,Rn=new Rt,Cn=new Rt,Pn=new Rt,Dn=new Rt,In=new Rt,Nn=new Rt,Bn=new Rt,zn=new vt,Fn=new vt,On=new vt,Hn=new Rt,Un=new Rt;class Gn extends Pe{constructor(t=new wn,e=new Ke){super(),this.type="Mesh",this.geometry=t,this.material=e,this.updateMorphTargets()}copy(t){return super.copy(t),void 0!==t.morphTargetInfluences&&(this.morphTargetInfluences=t.morphTargetInfluences.slice()),void 0!==t.morphTargetDictionary&&(this.morphTargetDictionary=Object.assign({},t.morphTargetDictionary)),this.material=t.material,this.geometry=t.geometry,this}updateMorphTargets(){const t=this.geometry;if(t.isBufferGeometry){const e=t.morphAttributes,n=Object.keys(e);if(n.length>0){const t=e[n[0]];if(void 0!==t){this.morphTargetInfluences=[],this.morphTargetDictionary={};for(let e=0,n=t.length;e<n;e++){const n=t[e].name||String(e);this.morphTargetInfluences.push(0),this.morphTargetDictionary[n]=e}}}}else{const e=t.morphTargets;void 0!==e&&e.length>0&&console.error("THREE.Mesh.updateMorphTargets() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.")}}raycast(t,e){const n=this.geometry,i=this.material,r=this.matrixWorld;if(void 0===i)return;if(null===n.boundingSphere&&n.computeBoundingSphere(),En.copy(n.boundingSphere),En.applyMatrix4(r),!1===t.ray.intersectsSphere(En))return;if(Sn.copy(r).invert(),Tn.copy(t.ray).applyMatrix4(Sn),null!==n.boundingBox&&!1===Tn.intersectsBox(n.boundingBox))return;let s;if(n.isBufferGeometry){const r=n.index,a=n.attributes.position,o=n.morphAttributes.position,l=n.morphTargetsRelative,c=n.attributes.uv,h=n.attributes.uv2,u=n.groups,d=n.drawRange;if(null!==r)if(Array.isArray(i))for(let n=0,p=u.length;n<p;n++){const p=u[n],m=i[p.materialIndex];for(let n=Math.max(p.start,d.start),i=Math.min(p.start+p.count,d.start+d.count);n<i;n+=3){const i=r.getX(n),u=r.getX(n+1),d=r.getX(n+2);s=kn(this,m,t,Tn,a,o,l,c,h,i,u,d),s&&(s.faceIndex=Math.floor(n/3),s.face.materialIndex=p.materialIndex,e.push(s))}}else{for(let n=Math.max(0,d.start),u=Math.min(r.count,d.start+d.count);n<u;n+=3){const u=r.getX(n),d=r.getX(n+1),p=r.getX(n+2);s=kn(this,i,t,Tn,a,o,l,c,h,u,d,p),s&&(s.faceIndex=Math.floor(n/3),e.push(s))}}else if(void 0!==a)if(Array.isArray(i))for(let n=0,r=u.length;n<r;n++){const r=u[n],p=i[r.materialIndex];for(let n=Math.max(r.start,d.start),i=Math.min(r.start+r.count,d.start+d.count);n<i;n+=3){s=kn(this,p,t,Tn,a,o,l,c,h,n,n+1,n+2),s&&(s.faceIndex=Math.floor(n/3),s.face.materialIndex=r.materialIndex,e.push(s))}}else{for(let n=Math.max(0,d.start),r=Math.min(a.count,d.start+d.count);n<r;n+=3){s=kn(this,i,t,Tn,a,o,l,c,h,n,n+1,n+2),s&&(s.faceIndex=Math.floor(n/3),e.push(s))}}}else n.isGeometry&&console.error("THREE.Mesh.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.")}}function kn(t,e,n,i,r,s,a,o,l,c,h,u){An.fromBufferAttribute(r,c),Ln.fromBufferAttribute(r,h),Rn.fromBufferAttribute(r,u);const d=t.morphTargetInfluences;if(e.morphTargets&&s&&d){In.set(0,0,0),Nn.set(0,0,0),Bn.set(0,0,0);for(let t=0,e=s.length;t<e;t++){const e=d[t],n=s[t];0!==e&&(Cn.fromBufferAttribute(n,c),Pn.fromBufferAttribute(n,h),Dn.fromBufferAttribute(n,u),a?(In.addScaledVector(Cn,e),Nn.addScaledVector(Pn,e),Bn.addScaledVector(Dn,e)):(In.addScaledVector(Cn.sub(An),e),Nn.addScaledVector(Pn.sub(Ln),e),Bn.addScaledVector(Dn.sub(Rn),e)))}An.add(In),Ln.add(Nn),Rn.add(Bn)}t.isSkinnedMesh&&(t.boneTransform(c,An),t.boneTransform(h,Ln),t.boneTransform(u,Rn));const p=function(t,e,n,i,r,s,a,o){let l;if(l=1===e.side?i.intersectTriangle(a,s,r,!0,o):i.intersectTriangle(r,s,a,2!==e.side,o),null===l)return null;Un.copy(o),Un.applyMatrix4(t.matrixWorld);const c=n.ray.origin.distanceTo(Un);return c<n.near||c>n.far?null:{distance:c,point:Un.clone(),object:t}}(t,e,n,i,An,Ln,Rn,Hn);if(p){o&&(zn.fromBufferAttribute(o,c),Fn.fromBufferAttribute(o,h),On.fromBufferAttribute(o,u),p.uv=ke.getUV(Hn,An,Ln,Rn,zn,Fn,On,new vt)),l&&(zn.fromBufferAttribute(l,c),Fn.fromBufferAttribute(l,h),On.fromBufferAttribute(l,u),p.uv2=ke.getUV(Hn,An,Ln,Rn,zn,Fn,On,new vt));const t={a:c,b:h,c:u,normal:new Rt,materialIndex:0};ke.getNormal(An,Ln,Rn,t.normal),p.face=t}return p}Gn.prototype.isMesh=!0;class Vn extends wn{constructor(t=1,e=1,n=1,i=1,r=1,s=1){super(),this.type="BoxGeometry",this.parameters={width:t,height:e,depth:n,widthSegments:i,heightSegments:r,depthSegments:s};const a=this;i=Math.floor(i),r=Math.floor(r),s=Math.floor(s);const o=[],l=[],c=[],h=[];let u=0,d=0;function p(t,e,n,i,r,s,p,m,f,g,v){const y=s/f,x=p/g,_=s/2,b=p/2,M=m/2,w=f+1,S=g+1;let T=0,E=0;const A=new Rt;for(let s=0;s<S;s++){const a=s*x-b;for(let o=0;o<w;o++){const u=o*y-_;A[t]=u*i,A[e]=a*r,A[n]=M,l.push(A.x,A.y,A.z),A[t]=0,A[e]=0,A[n]=m>0?1:-1,c.push(A.x,A.y,A.z),h.push(o/f),h.push(1-s/g),T+=1}}for(let t=0;t<g;t++)for(let e=0;e<f;e++){const n=u+e+w*t,i=u+e+w*(t+1),r=u+(e+1)+w*(t+1),s=u+(e+1)+w*t;o.push(n,i,s),o.push(i,r,s),E+=6}a.addGroup(d,E,v),d+=E,u+=T}p("z","y","x",-1,-1,n,e,t,s,r,0),p("z","y","x",1,-1,n,e,-t,s,r,1),p("x","z","y",1,1,t,n,e,i,s,2),p("x","z","y",1,-1,t,n,-e,i,s,3),p("x","y","z",1,-1,t,e,n,i,r,4),p("x","y","z",-1,-1,t,e,-n,i,r,5),this.setIndex(o),this.setAttribute("position",new un(l,3)),this.setAttribute("normal",new un(c,3)),this.setAttribute("uv",new un(h,2))}static fromJSON(t){return new Vn(t.width,t.height,t.depth,t.widthSegments,t.heightSegments,t.depthSegments)}}function Wn(t){const e={};for(const n in t){e[n]={};for(const i in t[n]){const r=t[n][i];r&&(r.isColor||r.isMatrix3||r.isMatrix4||r.isVector2||r.isVector3||r.isVector4||r.isTexture||r.isQuaternion)?e[n][i]=r.clone():Array.isArray(r)?e[n][i]=r.slice():e[n][i]=r}}return e}function jn(t){const e={};for(let n=0;n<t.length;n++){const i=Wn(t[n]);for(const t in i)e[t]=i[t]}return e}const qn={clone:Wn,merge:jn};class Xn extends We{constructor(t){super(),this.type="ShaderMaterial",this.defines={},this.uniforms={},this.vertexShader="void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}",this.fragmentShader="void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}",this.linewidth=1,this.wireframe=!1,this.wireframeLinewidth=1,this.fog=!1,this.lights=!1,this.clipping=!1,this.morphTargets=!1,this.morphNormals=!1,this.extensions={derivatives:!1,fragDepth:!1,drawBuffers:!1,shaderTextureLOD:!1},this.defaultAttributeValues={color:[1,1,1],uv:[0,0],uv2:[0,0]},this.index0AttributeName=void 0,this.uniformsNeedUpdate=!1,this.glslVersion=null,void 0!==t&&(void 0!==t.attributes&&console.error("THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead."),this.setValues(t))}copy(t){return super.copy(t),this.fragmentShader=t.fragmentShader,this.vertexShader=t.vertexShader,this.uniforms=Wn(t.uniforms),this.defines=Object.assign({},t.defines),this.wireframe=t.wireframe,this.wireframeLinewidth=t.wireframeLinewidth,this.lights=t.lights,this.clipping=t.clipping,this.morphTargets=t.morphTargets,this.morphNormals=t.morphNormals,this.extensions=Object.assign({},t.extensions),this.glslVersion=t.glslVersion,this}toJSON(t){const e=super.toJSON(t);e.glslVersion=this.glslVersion,e.uniforms={};for(const n in this.uniforms){const i=this.uniforms[n].value;i&&i.isTexture?e.uniforms[n]={type:"t",value:i.toJSON(t).uuid}:i&&i.isColor?e.uniforms[n]={type:"c",value:i.getHex()}:i&&i.isVector2?e.uniforms[n]={type:"v2",value:i.toArray()}:i&&i.isVector3?e.uniforms[n]={type:"v3",value:i.toArray()}:i&&i.isVector4?e.uniforms[n]={type:"v4",value:i.toArray()}:i&&i.isMatrix3?e.uniforms[n]={type:"m3",value:i.toArray()}:i&&i.isMatrix4?e.uniforms[n]={type:"m4",value:i.toArray()}:e.uniforms[n]={value:i}}Object.keys(this.defines).length>0&&(e.defines=this.defines),e.vertexShader=this.vertexShader,e.fragmentShader=this.fragmentShader;const n={};for(const t in this.extensions)!0===this.extensions[t]&&(n[t]=!0);return Object.keys(n).length>0&&(e.extensions=n),e}}Xn.prototype.isShaderMaterial=!0;class Yn extends Pe{constructor(){super(),this.type="Camera",this.matrixWorldInverse=new ae,this.projectionMatrix=new ae,this.projectionMatrixInverse=new ae}copy(t,e){return super.copy(t,e),this.matrixWorldInverse.copy(t.matrixWorldInverse),this.projectionMatrix.copy(t.projectionMatrix),this.projectionMatrixInverse.copy(t.projectionMatrixInverse),this}getWorldDirection(t){this.updateWorldMatrix(!0,!1);const e=this.matrixWorld.elements;return t.set(-e[8],-e[9],-e[10]).normalize()}updateMatrixWorld(t){super.updateMatrixWorld(t),this.matrixWorldInverse.copy(this.matrixWorld).invert()}updateWorldMatrix(t,e){super.updateWorldMatrix(t,e),this.matrixWorldInverse.copy(this.matrixWorld).invert()}clone(){return(new this.constructor).copy(this)}}Yn.prototype.isCamera=!0;class Jn extends Yn{constructor(t=50,e=1,n=.1,i=2e3){super(),this.type="PerspectiveCamera",this.fov=t,this.zoom=1,this.near=n,this.far=i,this.focus=10,this.aspect=e,this.view=null,this.filmGauge=35,this.filmOffset=0,this.updateProjectionMatrix()}copy(t,e){return super.copy(t,e),this.fov=t.fov,this.zoom=t.zoom,this.near=t.near,this.far=t.far,this.focus=t.focus,this.aspect=t.aspect,this.view=null===t.view?null:Object.assign({},t.view),this.filmGauge=t.filmGauge,this.filmOffset=t.filmOffset,this}setFocalLength(t){const e=.5*this.getFilmHeight()/t;this.fov=2*lt*Math.atan(e),this.updateProjectionMatrix()}getFocalLength(){const t=Math.tan(.5*ot*this.fov);return.5*this.getFilmHeight()/t}getEffectiveFOV(){return 2*lt*Math.atan(Math.tan(.5*ot*this.fov)/this.zoom)}getFilmWidth(){return this.filmGauge*Math.min(this.aspect,1)}getFilmHeight(){return this.filmGauge/Math.max(this.aspect,1)}setViewOffset(t,e,n,i,r,s){this.aspect=t/e,null===this.view&&(this.view={enabled:!0,fullWidth:1,fullHeight:1,offsetX:0,offsetY:0,width:1,height:1}),this.view.enabled=!0,this.view.fullWidth=t,this.view.fullHeight=e,this.view.offsetX=n,this.view.offsetY=i,this.view.width=r,this.view.height=s,this.updateProjectionMatrix()}clearViewOffset(){null!==this.view&&(this.view.enabled=!1),this.updateProjectionMatrix()}updateProjectionMatrix(){const t=this.near;let e=t*Math.tan(.5*ot*this.fov)/this.zoom,n=2*e,i=this.aspect*n,r=-.5*i;const s=this.view;if(null!==this.view&&this.view.enabled){const t=s.fullWidth,a=s.fullHeight;r+=s.offsetX*i/t,e-=s.offsetY*n/a,i*=s.width/t,n*=s.height/a}const a=this.filmOffset;0!==a&&(r+=t*a/this.getFilmWidth()),this.projectionMatrix.makePerspective(r,r+i,e,e-n,t,this.far),this.projectionMatrixInverse.copy(this.projectionMatrix).invert()}toJSON(t){const e=super.toJSON(t);return e.object.fov=this.fov,e.object.zoom=this.zoom,e.object.near=this.near,e.object.far=this.far,e.object.focus=this.focus,e.object.aspect=this.aspect,null!==this.view&&(e.object.view=Object.assign({},this.view)),e.object.filmGauge=this.filmGauge,e.object.filmOffset=this.filmOffset,e}}Jn.prototype.isPerspectiveCamera=!0;const Zn=90;class Qn extends Pe{constructor(t,e,n){if(super(),this.type="CubeCamera",!0!==n.isWebGLCubeRenderTarget)return void console.error("THREE.CubeCamera: The constructor now expects an instance of WebGLCubeRenderTarget as third parameter.");this.renderTarget=n;const i=new Jn(Zn,1,t,e);i.layers=this.layers,i.up.set(0,-1,0),i.lookAt(new Rt(1,0,0)),this.add(i);const r=new Jn(Zn,1,t,e);r.layers=this.layers,r.up.set(0,-1,0),r.lookAt(new Rt(-1,0,0)),this.add(r);const s=new Jn(Zn,1,t,e);s.layers=this.layers,s.up.set(0,0,1),s.lookAt(new Rt(0,1,0)),this.add(s);const a=new Jn(Zn,1,t,e);a.layers=this.layers,a.up.set(0,0,-1),a.lookAt(new Rt(0,-1,0)),this.add(a);const o=new Jn(Zn,1,t,e);o.layers=this.layers,o.up.set(0,-1,0),o.lookAt(new Rt(0,0,1)),this.add(o);const l=new Jn(Zn,1,t,e);l.layers=this.layers,l.up.set(0,-1,0),l.lookAt(new Rt(0,0,-1)),this.add(l)}update(t,e){null===this.parent&&this.updateMatrixWorld();const n=this.renderTarget,[i,r,s,a,o,l]=this.children,c=t.xr.enabled,h=t.getRenderTarget();t.xr.enabled=!1;const u=n.texture.generateMipmaps;n.texture.generateMipmaps=!1,t.setRenderTarget(n,0),t.render(e,i),t.setRenderTarget(n,1),t.render(e,r),t.setRenderTarget(n,2),t.render(e,s),t.setRenderTarget(n,3),t.render(e,a),t.setRenderTarget(n,4),t.render(e,o),n.texture.generateMipmaps=u,t.setRenderTarget(n,5),t.render(e,l),t.setRenderTarget(h),t.xr.enabled=c}}class Kn extends Mt{constructor(t,e,n,i,s,a,o,l,c,h){super(t=void 0!==t?t:[],e=void 0!==e?e:r,n,i,s,a,o=void 0!==o?o:T,l,c,h),this._needsFlipEnvMap=!0,this.flipY=!1}get images(){return this.image}set images(t){this.image=t}}Kn.prototype.isCubeTexture=!0;class $n extends Tt{constructor(t,e,n){Number.isInteger(e)&&(console.warn("THREE.WebGLCubeRenderTarget: constructor signature is now WebGLCubeRenderTarget( size, options )"),e=n),super(t,t,e),e=e||{},this.texture=new Kn(void 0,e.mapping,e.wrapS,e.wrapT,e.magFilter,e.minFilter,e.format,e.type,e.anisotropy,e.encoding),this.texture.generateMipmaps=void 0!==e.generateMipmaps&&e.generateMipmaps,this.texture.minFilter=void 0!==e.minFilter?e.minFilter:g,this.texture._needsFlipEnvMap=!1}fromEquirectangularTexture(t,e){this.texture.type=e.type,this.texture.format=E,this.texture.encoding=e.encoding,this.texture.generateMipmaps=e.generateMipmaps,this.texture.minFilter=e.minFilter,this.texture.magFilter=e.magFilter;const n={uniforms:{tEquirect:{value:null}},vertexShader:"\n\n\t\t\t\tvarying vec3 vWorldDirection;\n\n\t\t\t\tvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\n\t\t\t\t\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n\n\t\t\t\t}\n\n\t\t\t\tvoid main() {\n\n\t\t\t\t\tvWorldDirection = transformDirection( position, modelMatrix );\n\n\t\t\t\t\t#include <begin_vertex>\n\t\t\t\t\t#include <project_vertex>\n\n\t\t\t\t}\n\t\t\t",fragmentShader:"\n\n\t\t\t\tuniform sampler2D tEquirect;\n\n\t\t\t\tvarying vec3 vWorldDirection;\n\n\t\t\t\t#include <common>\n\n\t\t\t\tvoid main() {\n\n\t\t\t\t\tvec3 direction = normalize( vWorldDirection );\n\n\t\t\t\t\tvec2 sampleUV = equirectUv( direction );\n\n\t\t\t\t\tgl_FragColor = texture2D( tEquirect, sampleUV );\n\n\t\t\t\t}\n\t\t\t"},i=new Vn(5,5,5),r=new Xn({name:"CubemapFromEquirect",uniforms:Wn(n.uniforms),vertexShader:n.vertexShader,fragmentShader:n.fragmentShader,side:1,blending:0});r.uniforms.tEquirect.value=e;const s=new Gn(i,r),a=e.minFilter;e.minFilter===y&&(e.minFilter=g);return new Qn(1,10,this).update(t,s),e.minFilter=a,s.geometry.dispose(),s.material.dispose(),this}clear(t,e,n,i){const r=t.getRenderTarget();for(let r=0;r<6;r++)t.setRenderTarget(this,r),t.clear(e,n,i);t.setRenderTarget(r)}}$n.prototype.isWebGLCubeRenderTarget=!0;const ti=new Rt,ei=new Rt,ni=new yt;class ii{constructor(t=new Rt(1,0,0),e=0){this.normal=t,this.constant=e}set(t,e){return this.normal.copy(t),this.constant=e,this}setComponents(t,e,n,i){return this.normal.set(t,e,n),this.constant=i,this}setFromNormalAndCoplanarPoint(t,e){return this.normal.copy(t),this.constant=-e.dot(this.normal),this}setFromCoplanarPoints(t,e,n){const i=ti.subVectors(n,e).cross(ei.subVectors(t,e)).normalize();return this.setFromNormalAndCoplanarPoint(i,t),this}copy(t){return this.normal.copy(t.normal),this.constant=t.constant,this}normalize(){const t=1/this.normal.length();return this.normal.multiplyScalar(t),this.constant*=t,this}negate(){return this.constant*=-1,this.normal.negate(),this}distanceToPoint(t){return this.normal.dot(t)+this.constant}distanceToSphere(t){return this.distanceToPoint(t.center)-t.radius}projectPoint(t,e){return e.copy(this.normal).multiplyScalar(-this.distanceToPoint(t)).add(t)}intersectLine(t,e){const n=t.delta(ti),i=this.normal.dot(n);if(0===i)return 0===this.distanceToPoint(t.start)?e.copy(t.start):null;const r=-(t.start.dot(this.normal)+this.constant)/i;return r<0||r>1?null:e.copy(n).multiplyScalar(r).add(t.start)}intersectsLine(t){const e=this.distanceToPoint(t.start),n=this.distanceToPoint(t.end);return e<0&&n>0||n<0&&e>0}intersectsBox(t){return t.intersectsPlane(this)}intersectsSphere(t){return t.intersectsPlane(this)}coplanarPoint(t){return t.copy(this.normal).multiplyScalar(-this.constant)}applyMatrix4(t,e){const n=e||ni.getNormalMatrix(t),i=this.coplanarPoint(ti).applyMatrix4(t),r=this.normal.applyMatrix3(n).normalize();return this.constant=-i.dot(r),this}translate(t){return this.constant-=t.dot(this.normal),this}equals(t){return t.normal.equals(this.normal)&&t.constant===this.constant}clone(){return(new this.constructor).copy(this)}}ii.prototype.isPlane=!0;const ri=new Qt,si=new Rt;class ai{constructor(t=new ii,e=new ii,n=new ii,i=new ii,r=new ii,s=new ii){this.planes=[t,e,n,i,r,s]}set(t,e,n,i,r,s){const a=this.planes;return a[0].copy(t),a[1].copy(e),a[2].copy(n),a[3].copy(i),a[4].copy(r),a[5].copy(s),this}copy(t){const e=this.planes;for(let n=0;n<6;n++)e[n].copy(t.planes[n]);return this}setFromProjectionMatrix(t){const e=this.planes,n=t.elements,i=n[0],r=n[1],s=n[2],a=n[3],o=n[4],l=n[5],c=n[6],h=n[7],u=n[8],d=n[9],p=n[10],m=n[11],f=n[12],g=n[13],v=n[14],y=n[15];return e[0].setComponents(a-i,h-o,m-u,y-f).normalize(),e[1].setComponents(a+i,h+o,m+u,y+f).normalize(),e[2].setComponents(a+r,h+l,m+d,y+g).normalize(),e[3].setComponents(a-r,h-l,m-d,y-g).normalize(),e[4].setComponents(a-s,h-c,m-p,y-v).normalize(),e[5].setComponents(a+s,h+c,m+p,y+v).normalize(),this}intersectsObject(t){const e=t.geometry;return null===e.boundingSphere&&e.computeBoundingSphere(),ri.copy(e.boundingSphere).applyMatrix4(t.matrixWorld),this.intersectsSphere(ri)}intersectsSprite(t){return ri.center.set(0,0,0),ri.radius=.7071067811865476,ri.applyMatrix4(t.matrixWorld),this.intersectsSphere(ri)}intersectsSphere(t){const e=this.planes,n=t.center,i=-t.radius;for(let t=0;t<6;t++){if(e[t].distanceToPoint(n)<i)return!1}return!0}intersectsBox(t){const e=this.planes;for(let n=0;n<6;n++){const i=e[n];if(si.x=i.normal.x>0?t.max.x:t.min.x,si.y=i.normal.y>0?t.max.y:t.min.y,si.z=i.normal.z>0?t.max.z:t.min.z,i.distanceToPoint(si)<0)return!1}return!0}containsPoint(t){const e=this.planes;for(let n=0;n<6;n++)if(e[n].distanceToPoint(t)<0)return!1;return!0}clone(){return(new this.constructor).copy(this)}}function oi(){let t=null,e=!1,n=null,i=null;function r(e,s){n(e,s),i=t.requestAnimationFrame(r)}return{start:function(){!0!==e&&null!==n&&(i=t.requestAnimationFrame(r),e=!0)},stop:function(){t.cancelAnimationFrame(i),e=!1},setAnimationLoop:function(t){n=t},setContext:function(e){t=e}}}function li(t,e){const n=e.isWebGL2,i=new WeakMap;return{get:function(t){return t.isInterleavedBufferAttribute&&(t=t.data),i.get(t)},remove:function(e){e.isInterleavedBufferAttribute&&(e=e.data);const n=i.get(e);n&&(t.deleteBuffer(n.buffer),i.delete(e))},update:function(e,r){if(e.isGLBufferAttribute){const t=i.get(e);return void((!t||t.version<e.version)&&i.set(e,{buffer:e.buffer,type:e.type,bytesPerElement:e.elementSize,version:e.version}))}e.isInterleavedBufferAttribute&&(e=e.data);const s=i.get(e);void 0===s?i.set(e,function(e,i){const r=e.array,s=e.usage,a=t.createBuffer();t.bindBuffer(i,a),t.bufferData(i,r,s),e.onUploadCallback();let o=5126;return r instanceof Float32Array?o=5126:r instanceof Float64Array?console.warn("THREE.WebGLAttributes: Unsupported data buffer format: Float64Array."):r instanceof Uint16Array?e.isFloat16BufferAttribute?n?o=5131:console.warn("THREE.WebGLAttributes: Usage of Float16BufferAttribute requires WebGL2."):o=5123:r instanceof Int16Array?o=5122:r instanceof Uint32Array?o=5125:r instanceof Int32Array?o=5124:r instanceof Int8Array?o=5120:(r instanceof Uint8Array||r instanceof Uint8ClampedArray)&&(o=5121),{buffer:a,type:o,bytesPerElement:r.BYTES_PER_ELEMENT,version:e.version}}(e,r)):s.version<e.version&&(!function(e,i,r){const s=i.array,a=i.updateRange;t.bindBuffer(r,e),-1===a.count?t.bufferSubData(r,0,s):(n?t.bufferSubData(r,a.offset*s.BYTES_PER_ELEMENT,s,a.offset,a.count):t.bufferSubData(r,a.offset*s.BYTES_PER_ELEMENT,s.subarray(a.offset,a.offset+a.count)),a.count=-1)}(s.buffer,e,r),s.version=e.version)}}}class ci extends wn{constructor(t=1,e=1,n=1,i=1){super(),this.type="PlaneGeometry",this.parameters={width:t,height:e,widthSegments:n,heightSegments:i};const r=t/2,s=e/2,a=Math.floor(n),o=Math.floor(i),l=a+1,c=o+1,h=t/a,u=e/o,d=[],p=[],m=[],f=[];for(let t=0;t<c;t++){const e=t*u-s;for(let n=0;n<l;n++){const i=n*h-r;p.push(i,-e,0),m.push(0,0,1),f.push(n/a),f.push(1-t/o)}}for(let t=0;t<o;t++)for(let e=0;e<a;e++){const n=e+l*t,i=e+l*(t+1),r=e+1+l*(t+1),s=e+1+l*t;d.push(n,i,s),d.push(i,r,s)}this.setIndex(d),this.setAttribute("position",new un(p,3)),this.setAttribute("normal",new un(m,3)),this.setAttribute("uv",new un(f,2))}static fromJSON(t){return new ci(t.width,t.height,t.widthSegments,t.heightSegments)}}const hi={alphamap_fragment:"#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif",alphamap_pars_fragment:"#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif",alphatest_fragment:"#ifdef ALPHATEST\n\tif ( diffuseColor.a < ALPHATEST ) discard;\n#endif",aomap_fragment:"#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );\n\t#endif\n#endif",aomap_pars_fragment:"#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif",begin_vertex:"vec3 transformed = vec3( position );",beginnormal_vertex:"vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif",bsdfs:"vec2 integrateSpecularBRDF( const in float dotNV, const in float roughness ) {\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\treturn vec2( -1.04, 1.04 ) * a004 + r.zw;\n}\nfloat punctualLightIntensityToIrradianceFactor( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\tif( cutoffDistance > 0.0 ) {\n\t\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t}\n\treturn distanceFalloff;\n#else\n\tif( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\n\t\treturn pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\n\t}\n\treturn 1.0;\n#endif\n}\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 specularColor, const in float dotVH ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotVH - 6.98316 ) * dotVH );\n\treturn ( 1.0 - specularColor ) * fresnel + specularColor;\n}\nvec3 F_Schlick_RoughnessDependent( const in vec3 F0, const in float dotNV, const in float roughness ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotNV - 6.98316 ) * dotNV );\n\tvec3 Fr = max( vec3( 1.0 - roughness ), F0 ) - F0;\n\treturn Fr * fresnel + F0;\n}\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gl = dotNL + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\tfloat gv = dotNV + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\treturn 1.0 / ( gl * gv );\n}\nfloat G_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( incidentLight.direction + viewDir );\n\tfloat dotNL = saturate( dot( normal, incidentLight.direction ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( G * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nvec3 BRDF_Specular_GGX_Environment( const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\treturn specularColor * brdf.x + brdf.y;\n}\nvoid BRDF_Specular_Multiscattering_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\tvec3 F = F_Schlick_RoughnessDependent( specularColor, dotNV, roughness );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\tvec3 FssEss = F * brdf.x + brdf.y;\n\tfloat Ess = brdf.x + brdf.y;\n\tfloat Ems = 1.0 - Ess;\n\tvec3 Favg = specularColor + ( 1.0 - specularColor ) * 0.047619;\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n\tsingleScatter += FssEss;\n\tmultiScatter += Fms * Ems;\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\n\treturn ( 2.0 / pow2( ggxRoughness + 0.0001 ) - 2.0 );\n}\nfloat BlinnExponentToGGXRoughness( const in float blinnExponent ) {\n\treturn sqrt( 2.0 / ( blinnExponent + 2.0 ) );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie(float roughness, float NoH) {\n\tfloat invAlpha = 1.0 / roughness;\n\tfloat cos2h = NoH * NoH;\n\tfloat sin2h = max(1.0 - cos2h, 0.0078125);\treturn (2.0 + invAlpha) * pow(sin2h, invAlpha * 0.5) / (2.0 * PI);\n}\nfloat V_Neubelt(float NoV, float NoL) {\n\treturn saturate(1.0 / (4.0 * (NoL + NoV - NoL * NoV)));\n}\nvec3 BRDF_Specular_Sheen( const in float roughness, const in vec3 L, const in GeometricContext geometry, vec3 specularColor ) {\n\tvec3 N = geometry.normal;\n\tvec3 V = geometry.viewDir;\n\tvec3 H = normalize( V + L );\n\tfloat dotNH = saturate( dot( N, H ) );\n\treturn specularColor * D_Charlie( roughness, dotNH ) * V_Neubelt( dot(N, V), dot(N, L) );\n}\n#endif",bumpmap_pars_fragment:"#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {\n\t\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\n\t\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 ) * faceDirection;\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif",clipping_planes_fragment:"#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#pragma unroll_loop_end\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\tif ( clipped ) discard;\n\t#endif\n#endif",clipping_planes_pars_fragment:"#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif",clipping_planes_pars_vertex:"#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n#endif",clipping_planes_vertex:"#if NUM_CLIPPING_PLANES > 0\n\tvClipPosition = - mvPosition.xyz;\n#endif",color_fragment:"#if defined( USE_COLOR_ALPHA )\n\tdiffuseColor *= vColor;\n#elif defined( USE_COLOR )\n\tdiffuseColor.rgb *= vColor;\n#endif",color_pars_fragment:"#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR )\n\tvarying vec3 vColor;\n#endif",color_pars_vertex:"#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvarying vec3 vColor;\n#endif",color_vertex:"#if defined( USE_COLOR_ALPHA )\n\tvColor = vec4( 1.0 );\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n\tvColor *= color;\n#endif\n#ifdef USE_INSTANCING_COLOR\n\tvColor.xyz *= instanceColor.xyz;\n#endif",common:"#define PI 3.141592653589793\n#define PI2 6.283185307179586\n#define PI_HALF 1.5707963267948966\n#define RECIPROCAL_PI 0.3183098861837907\n#define RECIPROCAL_PI2 0.15915494309189535\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement(a) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract(sin(sn) * c);\n}\n#ifdef HIGH_PRECISION\n\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n\tfloat max3( vec3 v ) { return max( max( v.x, v.y ), v.z ); }\n\tfloat precisionSafeLength( vec3 v ) {\n\t\tfloat maxComponent = max3( abs( v ) );\n\t\treturn length( v / maxComponent ) * maxComponent;\n\t}\n#endif\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n#ifdef CLEARCOAT\n\tvec3 clearcoatNormal;\n#endif\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\tfloat distance = dot( planeNormal, point - pointOnPlane );\n\treturn - distance * planeNormal + point;\n}\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn sign( dot( point - pointOnPlane, planeNormal ) );\n}\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat linearToRelativeLuminance( const in vec3 color ) {\n\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\n\treturn dot( weights, color.rgb );\n}\nbool isPerspectiveMatrix( mat4 m ) {\n\treturn m[ 2 ][ 3 ] == - 1.0;\n}\nvec2 equirectUv( in vec3 dir ) {\n\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\n\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\treturn vec2( u, v );\n}",cube_uv_reflection_fragment:"#ifdef ENVMAP_TYPE_CUBE_UV\n\t#define cubeUV_maxMipLevel 8.0\n\t#define cubeUV_minMipLevel 4.0\n\t#define cubeUV_maxTileSize 256.0\n\t#define cubeUV_minTileSize 16.0\n\tfloat getFace( vec3 direction ) {\n\t\tvec3 absDirection = abs( direction );\n\t\tfloat face = - 1.0;\n\t\tif ( absDirection.x > absDirection.z ) {\n\t\t\tif ( absDirection.x > absDirection.y )\n\t\t\t\tface = direction.x > 0.0 ? 0.0 : 3.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t} else {\n\t\t\tif ( absDirection.z > absDirection.y )\n\t\t\t\tface = direction.z > 0.0 ? 2.0 : 5.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t}\n\t\treturn face;\n\t}\n\tvec2 getUV( vec3 direction, float face ) {\n\t\tvec2 uv;\n\t\tif ( face == 0.0 ) {\n\t\t\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 1.0 ) {\n\t\t\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\n\t\t} else if ( face == 2.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\n\t\t} else if ( face == 3.0 ) {\n\t\t\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 4.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\n\t\t} else {\n\t\t\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\n\t\t}\n\t\treturn 0.5 * ( uv + 1.0 );\n\t}\n\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\n\t\tfloat face = getFace( direction );\n\t\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\n\t\tmipInt = max( mipInt, cubeUV_minMipLevel );\n\t\tfloat faceSize = exp2( mipInt );\n\t\tfloat texelSize = 1.0 / ( 3.0 * cubeUV_maxTileSize );\n\t\tvec2 uv = getUV( direction, face ) * ( faceSize - 1.0 );\n\t\tvec2 f = fract( uv );\n\t\tuv += 0.5 - f;\n\t\tif ( face > 2.0 ) {\n\t\t\tuv.y += faceSize;\n\t\t\tface -= 3.0;\n\t\t}\n\t\tuv.x += face * faceSize;\n\t\tif ( mipInt < cubeUV_maxMipLevel ) {\n\t\t\tuv.y += 2.0 * cubeUV_maxTileSize;\n\t\t}\n\t\tuv.y += filterInt * 2.0 * cubeUV_minTileSize;\n\t\tuv.x += 3.0 * max( 0.0, cubeUV_maxTileSize - 2.0 * faceSize );\n\t\tuv *= texelSize;\n\t\tvec3 tl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x += texelSize;\n\t\tvec3 tr = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.y += texelSize;\n\t\tvec3 br = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x -= texelSize;\n\t\tvec3 bl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tvec3 tm = mix( tl, tr, f.x );\n\t\tvec3 bm = mix( bl, br, f.x );\n\t\treturn mix( tm, bm, f.y );\n\t}\n\t#define r0 1.0\n\t#define v0 0.339\n\t#define m0 - 2.0\n\t#define r1 0.8\n\t#define v1 0.276\n\t#define m1 - 1.0\n\t#define r4 0.4\n\t#define v4 0.046\n\t#define m4 2.0\n\t#define r5 0.305\n\t#define v5 0.016\n\t#define m5 3.0\n\t#define r6 0.21\n\t#define v6 0.0038\n\t#define m6 4.0\n\tfloat roughnessToMip( float roughness ) {\n\t\tfloat mip = 0.0;\n\t\tif ( roughness >= r1 ) {\n\t\t\tmip = ( r0 - roughness ) * ( m1 - m0 ) / ( r0 - r1 ) + m0;\n\t\t} else if ( roughness >= r4 ) {\n\t\t\tmip = ( r1 - roughness ) * ( m4 - m1 ) / ( r1 - r4 ) + m1;\n\t\t} else if ( roughness >= r5 ) {\n\t\t\tmip = ( r4 - roughness ) * ( m5 - m4 ) / ( r4 - r5 ) + m4;\n\t\t} else if ( roughness >= r6 ) {\n\t\t\tmip = ( r5 - roughness ) * ( m6 - m5 ) / ( r5 - r6 ) + m5;\n\t\t} else {\n\t\t\tmip = - 2.0 * log2( 1.16 * roughness );\t\t}\n\t\treturn mip;\n\t}\n\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\n\t\tfloat mip = clamp( roughnessToMip( roughness ), m0, cubeUV_maxMipLevel );\n\t\tfloat mipF = fract( mip );\n\t\tfloat mipInt = floor( mip );\n\t\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\n\t\tif ( mipF == 0.0 ) {\n\t\t\treturn vec4( color0, 1.0 );\n\t\t} else {\n\t\t\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\n\t\t\treturn vec4( mix( color0, color1, mipF ), 1.0 );\n\t\t}\n\t}\n#endif",defaultnormal_vertex:"vec3 transformedNormal = objectNormal;\n#ifdef USE_INSTANCING\n\tmat3 m = mat3( instanceMatrix );\n\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\n\ttransformedNormal = m * transformedNormal;\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif",displacementmap_pars_vertex:"#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif",displacementmap_vertex:"#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\n#endif",emissivemap_fragment:"#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif",emissivemap_pars_fragment:"#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif",encodings_fragment:"gl_FragColor = linearToOutputTexel( gl_FragColor );",encodings_pars_fragment:"\nvec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( gammaFactor ) ), value.a );\n}\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( 1.0 / gammaFactor ) ), value.a );\n}\nvec4 sRGBToLinear( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.a );\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}\nvec4 RGBEToLinear( in vec4 value ) {\n\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\n}\nvec4 LinearToRGBE( in vec4 value ) {\n\tfloat maxComponent = max( max( value.r, value.g ), value.b );\n\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\n\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\n}\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * value.a * maxRange, 1.0 );\n}\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat M = clamp( maxRGB / maxRange, 0.0, 1.0 );\n\tM = ceil( M * 255.0 ) / 255.0;\n\treturn vec4( value.rgb / ( M * maxRange ), M );\n}\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\n}\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat D = max( maxRange / maxRGB, 1.0 );\n\tD = clamp( floor( D ) / 255.0, 0.0, 1.0 );\n\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\n}\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\nvec4 LinearToLogLuv( in vec4 value ) {\n\tvec3 Xp_Y_XYZp = cLogLuvM * value.rgb;\n\tXp_Y_XYZp = max( Xp_Y_XYZp, vec3( 1e-6, 1e-6, 1e-6 ) );\n\tvec4 vResult;\n\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\n\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\n\tvResult.w = fract( Le );\n\tvResult.z = ( Le - ( floor( vResult.w * 255.0 ) ) / 255.0 ) / 255.0;\n\treturn vResult;\n}\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\nvec4 LogLuvToLinear( in vec4 value ) {\n\tfloat Le = value.z * 255.0 + value.w;\n\tvec3 Xp_Y_XYZp;\n\tXp_Y_XYZp.y = exp2( ( Le - 127.0 ) / 2.0 );\n\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\n\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\n\tvec3 vRGB = cLogLuvInverseM * Xp_Y_XYZp.rgb;\n\treturn vec4( max( vRGB, 0.0 ), 1.0 );\n}",envmap_fragment:"#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToFrag;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\tvec4 envColor = textureCubeUV( envMap, reflectVec, 0.0 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\t#ifndef ENVMAP_TYPE_CUBE_UV\n\t\tenvColor = envMapTexelToLinear( envColor );\n\t#endif\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif",envmap_common_pars_fragment:"#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\tuniform int maxMipLevel;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif",envmap_pars_fragment:"#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif",envmap_pars_vertex:"#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) ||defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif",envmap_physical_pars_fragment:"#if defined( USE_ENVMAP )\n\t#ifdef ENVMAP_MODE_REFRACTION\n\t\tuniform float refractionRatio;\n\t#endif\n\tvec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\n\t\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\n\t\t#else\n\t\t\tvec4 envMapColor = vec4( 0.0 );\n\t\t#endif\n\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t}\n\tfloat getSpecularMIPLevel( const in float roughness, const in int maxMIPLevel ) {\n\t\tfloat maxMIPLevelScalar = float( maxMIPLevel );\n\t\tfloat sigma = PI * roughness * roughness / ( 1.0 + roughness );\n\t\tfloat desiredMIPLevel = maxMIPLevelScalar + log2( sigma );\n\t\treturn clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\n\t}\n\tvec3 getLightProbeIndirectRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in int maxMIPLevel ) {\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( -viewDir, normal );\n\t\t\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( -viewDir, normal, refractionRatio );\n\t\t#endif\n\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\tfloat specularMIPLevel = getSpecularMIPLevel( roughness, maxMIPLevel );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\n\t\t#endif\n\t\treturn envMapColor.rgb * envMapIntensity;\n\t}\n#endif",envmap_vertex:"#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif",fog_vertex:"#ifdef USE_FOG\n\tfogDepth = - mvPosition.z;\n#endif",fog_pars_vertex:"#ifdef USE_FOG\n\tvarying float fogDepth;\n#endif",fog_fragment:"#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * fogDepth * fogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, fogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif",fog_pars_fragment:"#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float fogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif",gradientmap_pars_fragment:"#ifdef USE_GRADIENTMAP\n\tuniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\tfloat dotNL = dot( normal, lightDirection );\n\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t#ifdef USE_GRADIENTMAP\n\t\treturn texture2D( gradientMap, coord ).rgb;\n\t#else\n\t\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\n\t#endif\n}",lightmap_fragment:"#ifdef USE_LIGHTMAP\n\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\treflectedLight.indirectDiffuse += PI * lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n#endif",lightmap_pars_fragment:"#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif",lights_lambert_vertex:"vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\nvIndirectFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n\tvLightBack = vec3( 0.0 );\n\tvIndirectBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\nvIndirectFront += getAmbientLightIrradiance( ambientLightColor );\nvIndirectFront += getLightProbeIrradiance( lightProbe, geometry );\n#ifdef DOUBLE_SIDED\n\tvIndirectBack += getAmbientLightIrradiance( ambientLightColor );\n\tvIndirectBack += getLightProbeIrradiance( lightProbe, backGeometry );\n#endif\n#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tgetPointDirectLightIrradiance( pointLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tgetSpotDirectLightIrradiance( spotLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tgetDirectionalDirectLightIrradiance( directionalLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\tvIndirectFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvIndirectBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif",lights_pars_begin:"uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\nuniform vec3 lightProbe[ 9 ];\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n\tfloat x = normal.x, y = normal.y, z = normal.z;\n\tvec3 result = shCoefficients[ 0 ] * 0.886227;\n\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n\treturn result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in GeometricContext geometry ) {\n\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n\treturn irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treturn irradiance;\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalDirectLightIrradiance( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tdirectLight.color = directionalLight.color;\n\t\tdirectLight.direction = directionalLight.direction;\n\t\tdirectLight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointDirectLightIrradiance( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tdirectLight.color = pointLight.color;\n\t\tdirectLight.color *= punctualLightIntensityToIrradianceFactor( lightDistance, pointLight.distance, pointLight.decay );\n\t\tdirectLight.visible = ( directLight.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotDirectLightIrradiance( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tfloat angleCos = dot( directLight.direction, spotLight.direction );\n\t\tif ( angleCos > spotLight.coneCos ) {\n\t\t\tfloat spotEffect = smoothstep( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\t\tdirectLight.color = spotLight.color;\n\t\t\tdirectLight.color *= spotEffect * punctualLightIntensityToIrradianceFactor( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tdirectLight.visible = true;\n\t\t} else {\n\t\t\tdirectLight.color = vec3( 0.0 );\n\t\t\tdirectLight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\n\t\tfloat dotNL = dot( geometry.normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tirradiance *= PI;\n\t\t#endif\n\t\treturn irradiance;\n\t}\n#endif",lights_toon_fragment:"ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;",lights_toon_pars_fragment:"varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct ToonMaterial {\n\tvec3 diffuseColor;\n};\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Toon\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Toon\n#define Material_LightProbeLOD( material )\t(0)",lights_phong_fragment:"BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;",lights_phong_pars_fragment:"varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct BlinnPhongMaterial {\n\tvec3 diffuseColor;\n\tvec3 specularColor;\n\tfloat specularShininess;\n\tfloat specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)",lights_physical_fragment:"PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.specularRoughness = max( roughnessFactor, 0.0525 );material.specularRoughness += geometryRoughness;\nmaterial.specularRoughness = min( material.specularRoughness, 1.0 );\n#ifdef REFLECTIVITY\n\tmaterial.specularColor = mix( vec3( MAXIMUM_SPECULAR_COEFFICIENT * pow2( reflectivity ) ), diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( DEFAULT_SPECULAR_COEFFICIENT ), diffuseColor.rgb, metalnessFactor );\n#endif\n#ifdef CLEARCOAT\n\tmaterial.clearcoat = clearcoat;\n\tmaterial.clearcoatRoughness = clearcoatRoughness;\n\t#ifdef USE_CLEARCOATMAP\n\t\tmaterial.clearcoat *= texture2D( clearcoatMap, vUv ).x;\n\t#endif\n\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\t\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vUv ).y;\n\t#endif\n\tmaterial.clearcoat = saturate( material.clearcoat );\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n\tmaterial.clearcoatRoughness += geometryRoughness;\n\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenColor = sheen;\n#endif",lights_physical_pars_fragment:"struct PhysicalMaterial {\n\tvec3 diffuseColor;\n\tfloat specularRoughness;\n\tvec3 specularColor;\n#ifdef CLEARCOAT\n\tfloat clearcoat;\n\tfloat clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tvec3 sheenColor;\n#endif\n};\n#define MAXIMUM_SPECULAR_COEFFICIENT 0.16\n#define DEFAULT_SPECULAR_COEFFICIENT 0.04\nfloat clearcoatDHRApprox( const in float roughness, const in float dotNL ) {\n\treturn DEFAULT_SPECULAR_COEFFICIENT + ( 1.0 - DEFAULT_SPECULAR_COEFFICIENT ) * ( pow( 1.0 - dotNL, 5.0 ) * pow( 1.0 - roughness, 2.0 ) );\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.specularRoughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(\t\t0, 1,\t\t0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNL = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = ccDotNL * directLight.color;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tccIrradiance *= PI;\n\t\t#endif\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t\treflectedLight.directSpecular += ccIrradiance * material.clearcoat * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\t#ifdef USE_SHEEN\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_Sheen(\n\t\t\tmaterial.specularRoughness,\n\t\t\tdirectLight.direction,\n\t\t\tgeometry,\n\t\t\tmaterial.sheenColor\n\t\t);\n\t#else\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.normal, material.specularColor, material.specularRoughness);\n\t#endif\n\treflectedLight.directDiffuse += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNV = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular += clearcoatRadiance * material.clearcoat * BRDF_Specular_GGX_Environment( geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t\tfloat ccDotNL = ccDotNV;\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\tfloat clearcoatInv = 1.0 - clearcoatDHR;\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n\tBRDF_Specular_Multiscattering_Environment( geometry, material.specularColor, material.specularRoughness, singleScattering, multiScattering );\n\tvec3 diffuse = material.diffuseColor * ( 1.0 - ( singleScattering + multiScattering ) );\n\treflectedLight.indirectSpecular += clearcoatInv * radiance * singleScattering;\n\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}",lights_fragment_begin:"\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\n#ifdef CLEARCOAT\n\tgeometry.clearcoatNormal = clearcoatNormal;\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointDirectLightIrradiance( pointLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n\t\tpointLightShadow = pointLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotDirectLightIrradiance( spotLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\tspotLightShadow = spotLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalDirectLightIrradiance( directionalLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n\t\tdirectionalLightShadow = directionalLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 iblIrradiance = vec3( 0.0 );\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\tirradiance += getLightProbeIrradiance( lightProbe, geometry );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearcoatRadiance = vec3( 0.0 );\n#endif",lights_fragment_maps:"#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\tvec3 lightMapIrradiance = lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tlightMapIrradiance *= PI;\n\t\t#endif\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getLightProbeIndirectIrradiance( geometry, maxMipLevel );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.normal, material.specularRoughness, maxMipLevel );\n\t#ifdef CLEARCOAT\n\t\tclearcoatRadiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness, maxMipLevel );\n\t#endif\n#endif",lights_fragment_end:"#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\n#endif",logdepthbuf_fragment:"#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif",logdepthbuf_pars_fragment:"#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif",logdepthbuf_pars_vertex:"#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t\tvarying float vIsPerspective;\n\t#else\n\t\tuniform float logDepthBufFC;\n\t#endif\n#endif",logdepthbuf_vertex:"#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n\t#else\n\t\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\n\t\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\t\tgl_Position.z *= gl_Position.w;\n\t\t}\n\t#endif\n#endif",map_fragment:"#ifdef USE_MAP\n\tvec4 texelColor = texture2D( map, vUv );\n\ttexelColor = mapTexelToLinear( texelColor );\n\tdiffuseColor *= texelColor;\n#endif",map_pars_fragment:"#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif",map_particle_fragment:"#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n#endif\n#ifdef USE_MAP\n\tvec4 mapTexel = texture2D( map, uv );\n\tdiffuseColor *= mapTexelToLinear( mapTexel );\n#endif\n#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif",map_particle_pars_fragment:"#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tuniform mat3 uvTransform;\n#endif\n#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif",metalnessmap_fragment:"float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif",metalnessmap_pars_fragment:"#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif",morphnormal_vertex:"#ifdef USE_MORPHNORMALS\n\tobjectNormal *= morphTargetBaseInfluence;\n\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\n\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\n\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\n\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\n#endif",morphtarget_pars_vertex:"#ifdef USE_MORPHTARGETS\n\tuniform float morphTargetBaseInfluence;\n\t#ifndef USE_MORPHNORMALS\n\t\tuniform float morphTargetInfluences[ 8 ];\n\t#else\n\t\tuniform float morphTargetInfluences[ 4 ];\n\t#endif\n#endif",morphtarget_vertex:"#ifdef USE_MORPHTARGETS\n\ttransformed *= morphTargetBaseInfluence;\n\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\n\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\n\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\n\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\n\t#ifndef USE_MORPHNORMALS\n\t\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\n\t\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\n\t\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\n\t\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\n\t#endif\n#endif",normal_fragment_begin:"float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;\n#ifdef FLAT_SHADED\n\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\t#ifdef USE_TANGENT\n\t\tvec3 tangent = normalize( vTangent );\n\t\tvec3 bitangent = normalize( vBitangent );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\ttangent = tangent * faceDirection;\n\t\t\tbitangent = bitangent * faceDirection;\n\t\t#endif\n\t\t#if defined( TANGENTSPACE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )\n\t\t\tmat3 vTBN = mat3( tangent, bitangent, normal );\n\t\t#endif\n\t#endif\n#endif\nvec3 geometryNormal = normal;",normal_fragment_maps:"#ifdef OBJECTSPACE_NORMALMAP\n\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( TANGENTSPACE_NORMALMAP )\n\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\tmapN.xy *= normalScale;\n\t#ifdef USE_TANGENT\n\t\tnormal = normalize( vTBN * mapN );\n\t#else\n\t\tnormal = perturbNormal2Arb( -vViewPosition, normal, mapN, faceDirection );\n\t#endif\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd(), faceDirection );\n#endif",normalmap_pars_fragment:"#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef OBJECTSPACE_NORMALMAP\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec3 mapN, float faceDirection ) {\n\t\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\n\t\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tvec3 N = surf_norm;\n\t\tvec3 q1perp = cross( q1, N );\n\t\tvec3 q0perp = cross( N, q0 );\n\t\tvec3 T = q1perp * st0.x + q0perp * st1.x;\n\t\tvec3 B = q1perp * st0.y + q0perp * st1.y;\n\t\tfloat det = max( dot( T, T ), dot( B, B ) );\n\t\tfloat scale = ( det == 0.0 ) ? 0.0 : faceDirection * inversesqrt( det );\n\t\treturn normalize( T * ( mapN.x * scale ) + B * ( mapN.y * scale ) + N * mapN.z );\n\t}\n#endif",clearcoat_normal_fragment_begin:"#ifdef CLEARCOAT\n\tvec3 clearcoatNormal = geometryNormal;\n#endif",clearcoat_normal_fragment_maps:"#ifdef USE_CLEARCOAT_NORMALMAP\n\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vUv ).xyz * 2.0 - 1.0;\n\tclearcoatMapN.xy *= clearcoatNormalScale;\n\t#ifdef USE_TANGENT\n\t\tclearcoatNormal = normalize( vTBN * clearcoatMapN );\n\t#else\n\t\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatMapN, faceDirection );\n\t#endif\n#endif",clearcoat_pars_fragment:"#ifdef USE_CLEARCOATMAP\n\tuniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform sampler2D clearcoatRoughnessMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif",packing:"vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nvec4 pack2HalfToRGBA( vec2 v ) {\n\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ));\n\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w);\n}\nvec2 unpackRGBATo2Half( vec4 v ) {\n\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn (( near + viewZ ) * far ) / (( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}",premultiplied_alpha_fragment:"#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif",project_vertex:"vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;",dithering_fragment:"#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif",dithering_pars_fragment:"#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif",roughnessmap_fragment:"float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif",roughnessmap_pars_fragment:"#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif",shadowmap_pars_fragment:"#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n\t\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\n\t}\n\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n\t\tfloat occlusion = 1.0;\n\t\tvec2 distribution = texture2DDistribution( shadow, uv );\n\t\tfloat hard_shadow = step( compare , distribution.x );\n\t\tif (hard_shadow != 1.0 ) {\n\t\t\tfloat distance = compare - distribution.x ;\n\t\t\tfloat variance = max( 0.00000, distribution.y * distribution.y );\n\t\t\tfloat softness_probability = variance / (variance + distance * distance );\t\t\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\t\t\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n\t\t}\n\t\treturn occlusion;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tfloat dx2 = dx0 / 2.0;\n\t\t\tfloat dy2 = dy0 / 2.0;\n\t\t\tfloat dx3 = dx1 / 2.0;\n\t\t\tfloat dy3 = dy1 / 2.0;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 17.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx = texelSize.x;\n\t\t\tfloat dy = texelSize.y;\n\t\t\tvec2 uv = shadowCoord.xy;\n\t\t\tvec2 f = fract( uv * shadowMapSize + 0.5 );\n\t\t\tuv -= f * texelSize;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t\tf.x ),\n\t\t\t\t\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ), \n\t\t\t\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t\tf.x ),\n\t\t\t\t\t f.y )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_VSM )\n\t\t\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif",shadowmap_pars_vertex:"#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n#endif",shadowmap_vertex:"#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SPOT_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0\n\t\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\tvec4 shadowWorldPosition;\n\t#endif\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n#endif",shadowmask_pars_fragment:"float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tdirectionalLight = directionalLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tspotLight = spotLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tpointLight = pointLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#endif\n\treturn shadow;\n}",skinbase_vertex:"#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif",skinning_pars_vertex:"#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\t#ifdef BONE_TEXTURE\n\t\tuniform highp sampler2D boneTexture;\n\t\tuniform int boneTextureSize;\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tfloat j = i * 4.0;\n\t\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\t\ty = dy * ( y + 0.5 );\n\t\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\t\treturn bone;\n\t\t}\n\t#else\n\t\tuniform mat4 boneMatrices[ MAX_BONES ];\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tmat4 bone = boneMatrices[ int(i) ];\n\t\t\treturn bone;\n\t\t}\n\t#endif\n#endif",skinning_vertex:"#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif",skinnormal_vertex:"#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif",specularmap_fragment:"float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif",specularmap_pars_fragment:"#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif",tonemapping_fragment:"#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif",tonemapping_pars_fragment:"#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 RRTAndODTFit( vec3 v ) {\n\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\n\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\n\treturn a / b;\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n\tconst mat3 ACESInputMat = mat3(\n\t\tvec3( 0.59719, 0.07600, 0.02840 ),\t\tvec3( 0.35458, 0.90834, 0.13383 ),\n\t\tvec3( 0.04823, 0.01566, 0.83777 )\n\t);\n\tconst mat3 ACESOutputMat = mat3(\n\t\tvec3(\t1.60475, -0.10208, -0.00327 ),\t\tvec3( -0.53108,\t1.10813, -0.07276 ),\n\t\tvec3( -0.07367, -0.00605,\t1.07602 )\n\t);\n\tcolor *= toneMappingExposure / 0.6;\n\tcolor = ACESInputMat * color;\n\tcolor = RRTAndODTFit( color );\n\tcolor = ACESOutputMat * color;\n\treturn saturate( color );\n}\nvec3 CustomToneMapping( vec3 color ) { return color; }",transmission_fragment:"#ifdef USE_TRANSMISSION\n\tfloat transmissionFactor = transmission;\n\tfloat thicknessFactor = thickness;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\ttransmissionFactor *= texture2D( transmissionMap, vUv ).r;\n\t#endif\n\t#ifdef USE_THICKNESSNMAP\n\t\tthicknessFactor *= texture2D( thicknessMap, vUv ).g;\n\t#endif\n\tvec3 pos = vWorldPosition.xyz / vWorldPosition.w;\n\tvec3 v = normalize( cameraPosition - pos );\n\tfloat ior = ( 1.0 + 0.4 * reflectivity ) / ( 1.0 - 0.4 * reflectivity );\n\tvec3 transmission = transmissionFactor * getIBLVolumeRefraction(\n\t\tnormal, v, roughnessFactor, material.diffuseColor, totalSpecular,\n\t\tpos, modelMatrix, viewMatrix, projectionMatrix, ior, thicknessFactor,\n\t\tattenuationColor, attenuationDistance );\n\ttotalDiffuse = mix( totalDiffuse, transmission, transmissionFactor );\n#endif",transmission_pars_fragment:"#ifdef USE_TRANSMISSION\n\t#ifdef USE_TRANSMISSIONMAP\n\t\tuniform sampler2D transmissionMap;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tuniform sampler2D thicknessMap;\n\t#endif\n\tuniform vec2 transmissionSamplerSize;\n\tuniform sampler2D transmissionSamplerMap;\n\tuniform mat4 modelMatrix;\n\tuniform mat4 projectionMatrix;\n\tvarying vec4 vWorldPosition;\n\tvec3 getVolumeTransmissionRay(vec3 n, vec3 v, float thickness, float ior, mat4 modelMatrix) {\n\t\tvec3 refractionVector = refract(-v, normalize(n), 1.0 / ior);\n\t\tvec3 modelScale;\n\t\tmodelScale.x = length(vec3(modelMatrix[0].xyz));\n\t\tmodelScale.y = length(vec3(modelMatrix[1].xyz));\n\t\tmodelScale.z = length(vec3(modelMatrix[2].xyz));\n\t\treturn normalize(refractionVector) * thickness * modelScale;\n\t}\n\tfloat applyIorToRoughness(float roughness, float ior) {\n\t\treturn roughness * clamp(ior * 2.0 - 2.0, 0.0, 1.0);\n\t}\n\tvec3 getTransmissionSample(vec2 fragCoord, float roughness, float ior) {\n\t\tfloat framebufferLod = log2(transmissionSamplerSize.x) * applyIorToRoughness(roughness, ior);\n\t\treturn texture2DLodEXT(transmissionSamplerMap, fragCoord.xy, framebufferLod).rgb;\n\t}\n\tvec3 applyVolumeAttenuation(vec3 radiance, float transmissionDistance, vec3 attenuationColor, float attenuationDistance) {\n\t\tif (attenuationDistance == 0.0) {\n\t\t\treturn radiance;\n\t\t} else {\n\t\t\tvec3 attenuationCoefficient = -log(attenuationColor) / attenuationDistance;\n\t\t\tvec3 transmittance = exp(-attenuationCoefficient * transmissionDistance);\t\t\treturn transmittance * radiance;\n\t\t}\n\t}\n\tvec3 getIBLVolumeRefraction(vec3 n, vec3 v, float perceptualRoughness, vec3 baseColor, vec3 specularColor,\n\t\tvec3 position, mat4 modelMatrix, mat4 viewMatrix, mat4 projMatrix, float ior, float thickness,\n\t\tvec3 attenuationColor, float attenuationDistance) {\n\t\tvec3 transmissionRay = getVolumeTransmissionRay(n, v, thickness, ior, modelMatrix);\n\t\tvec3 refractedRayExit = position + transmissionRay;\n\t\tvec4 ndcPos = projMatrix * viewMatrix * vec4(refractedRayExit, 1.0);\n\t\tvec2 refractionCoords = ndcPos.xy / ndcPos.w;\n\t\trefractionCoords += 1.0;\n\t\trefractionCoords /= 2.0;\n\t\tvec3 transmittedLight = getTransmissionSample(refractionCoords, perceptualRoughness, ior);\n\t\tvec3 attenuatedColor = applyVolumeAttenuation(transmittedLight, length(transmissionRay), attenuationColor, attenuationDistance);\n\t\treturn (1.0 - specularColor) * attenuatedColor * baseColor;\n\t}\n#endif",uv_pars_fragment:"#if ( defined( USE_UV ) && ! defined( UVS_VERTEX_ONLY ) )\n\tvarying vec2 vUv;\n#endif",uv_pars_vertex:"#ifdef USE_UV\n\t#ifdef UVS_VERTEX_ONLY\n\t\tvec2 vUv;\n\t#else\n\t\tvarying vec2 vUv;\n\t#endif\n\tuniform mat3 uvTransform;\n#endif",uv_vertex:"#ifdef USE_UV\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif",uv2_pars_fragment:"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif",uv2_pars_vertex:"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n\tuniform mat3 uv2Transform;\n#endif",uv2_vertex:"#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = ( uv2Transform * vec3( uv2, 1 ) ).xy;\n#endif",worldpos_vertex:"#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP ) || defined ( USE_TRANSMISSION )\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif",background_frag:"uniform sampler2D t2D;\nvarying vec2 vUv;\nvoid main() {\n\tvec4 texColor = texture2D( t2D, vUv );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}",background_vert:"varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}",cube_frag:"#include <envmap_common_pars_fragment>\nuniform float opacity;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n\tvec3 vReflect = vWorldDirection;\n\t#include <envmap_fragment>\n\tgl_FragColor = envColor;\n\tgl_FragColor.a *= opacity;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}",cube_vert:"varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}",depth_frag:"#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( fragCoordZ );\n\t#endif\n}",depth_vert:"#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvHighPrecisionZW = gl_Position.zw;\n}",distanceRGBA_frag:"#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}",distanceRGBA_vert:"#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}",equirect_frag:"uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV = equirectUv( direction );\n\tvec4 texColor = texture2D( tEquirect, sampleUV );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}",equirect_vert:"varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}",linedashed_frag:"uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}",linedashed_vert:"uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\tvLineDistance = scale * lineDistance;\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}",meshbasic_frag:"uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\treflectedLight.indirectDiffuse += lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}",meshbasic_vert:"#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_ENVMAP\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}",meshlambert_frag:"uniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <emissivemap_fragment>\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;\n\t#else\n\t\treflectedLight.indirectDiffuse += vIndirectFront;\n\t#endif\n\t#include <lightmap_fragment>\n\treflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\n\t#else\n\t\treflectedLight.directDiffuse = vLightFront;\n\t#endif\n\treflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}",meshlambert_vert:"#define LAMBERT\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <lights_lambert_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}",meshmatcap_frag:"#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tvec3 viewDir = normalize( vViewPosition );\n\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n\tvec3 y = cross( viewDir, x );\n\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n\t#ifdef USE_MATCAP\n\t\tvec4 matcapColor = texture2D( matcap, uv );\n\t\tmatcapColor = matcapTexelToLinear( matcapColor );\n\t#else\n\t\tvec4 matcapColor = vec4( 1.0 );\n\t#endif\n\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}",meshmatcap_vert:"#define MATCAP\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#ifndef FLAT_SHADED\n\t\tvNormal = normalize( transformedNormal );\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n\tvViewPosition = - mvPosition.xyz;\n}",meshtoon_frag:"#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_toon_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}",meshtoon_vert:"#define TOON\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}",meshphong_frag:"#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}",meshphong_vert:"#define PHONG\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}",meshphysical_frag:"#define STANDARD\n#ifdef PHYSICAL\n\t#define REFLECTIVITY\n\t#define CLEARCOAT\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef USE_TRANSMISSION\n\tuniform float transmission;\n\tuniform float thickness;\n\tuniform vec3 attenuationColor;\n\tuniform float attenuationDistance;\n#endif\n#ifdef REFLECTIVITY\n\tuniform float reflectivity;\n#endif\n#ifdef CLEARCOAT\n\tuniform float clearcoat;\n\tuniform float clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tuniform vec3 sheen;\n#endif\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <bsdfs>\n#include <transmission_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <lights_physical_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <clearcoat_normal_fragment_begin>\n\t#include <clearcoat_normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 totalDiffuse = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse;\n\tvec3 totalSpecular = reflectedLight.directSpecular + reflectedLight.indirectSpecular;\n\t#include <transmission_fragment>\n\tvec3 outgoingLight = totalDiffuse + totalSpecular + totalEmissiveRadiance;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}",meshphysical_vert:"#define STANDARD\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#ifdef USE_TRANSMISSION\n\tvarying vec4 vWorldPosition;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n#ifdef USE_TRANSMISSION\n\tvWorldPosition = worldPosition;\n#endif\n}",normal_frag:"#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n}",normal_vert:"#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}",points_frag:"uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}",points_vert:"uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\tgl_PointSize = size;\n\t#ifdef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <fog_vertex>\n}",shadow_frag:"uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}",shadow_vert:"#include <common>\n#include <fog_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}",sprite_frag:"uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}",sprite_vert:"uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n\tvec2 scale;\n\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n\t#ifndef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) scale *= - mvPosition.z;\n\t#endif\n\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n\tvec2 rotatedPosition;\n\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n\tmvPosition.xy += rotatedPosition;\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}"},ui={common:{diffuse:{value:new Qe(16777215)},opacity:{value:1},map:{value:null},uvTransform:{value:new yt},uv2Transform:{value:new yt},alphaMap:{value:null}},specularmap:{specularMap:{value:null}},envmap:{envMap:{value:null},flipEnvMap:{value:-1},reflectivity:{value:1},refractionRatio:{value:.98},maxMipLevel:{value:0}},aomap:{aoMap:{value:null},aoMapIntensity:{value:1}},lightmap:{lightMap:{value:null},lightMapIntensity:{value:1}},emissivemap:{emissiveMap:{value:null}},bumpmap:{bumpMap:{value:null},bumpScale:{value:1}},normalmap:{normalMap:{value:null},normalScale:{value:new vt(1,1)}},displacementmap:{displacementMap:{value:null},displacementScale:{value:1},displacementBias:{value:0}},roughnessmap:{roughnessMap:{value:null}},metalnessmap:{metalnessMap:{value:null}},gradientmap:{gradientMap:{value:null}},fog:{fogDensity:{value:25e-5},fogNear:{value:1},fogFar:{value:2e3},fogColor:{value:new Qe(16777215)}},lights:{ambientLightColor:{value:[]},lightProbe:{value:[]},directionalLights:{value:[],properties:{direction:{},color:{}}},directionalLightShadows:{value:[],properties:{shadowBias:{},shadowNormalBias:{},shadowRadius:{},shadowMapSize:{}}},directionalShadowMap:{value:[]},directionalShadowMatrix:{value:[]},spotLights:{value:[],properties:{color:{},position:{},direction:{},distance:{},coneCos:{},penumbraCos:{},decay:{}}},spotLightShadows:{value:[],properties:{shadowBias:{},shadowNormalBias:{},shadowRadius:{},shadowMapSize:{}}},spotShadowMap:{value:[]},spotShadowMatrix:{value:[]},pointLights:{value:[],properties:{color:{},position:{},decay:{},distance:{}}},pointLightShadows:{value:[],properties:{shadowBias:{},shadowNormalBias:{},shadowRadius:{},shadowMapSize:{},shadowCameraNear:{},shadowCameraFar:{}}},pointShadowMap:{value:[]},pointShadowMatrix:{value:[]},hemisphereLights:{value:[],properties:{direction:{},skyColor:{},groundColor:{}}},rectAreaLights:{value:[],properties:{color:{},position:{},width:{},height:{}}},ltc_1:{value:null},ltc_2:{value:null}},points:{diffuse:{value:new Qe(16777215)},opacity:{value:1},size:{value:1},scale:{value:1},map:{value:null},alphaMap:{value:null},uvTransform:{value:new yt}},sprite:{diffuse:{value:new Qe(16777215)},opacity:{value:1},center:{value:new vt(.5,.5)},rotation:{value:0},map:{value:null},alphaMap:{value:null},uvTransform:{value:new yt}}},di={basic:{uniforms:jn([ui.common,ui.specularmap,ui.envmap,ui.aomap,ui.lightmap,ui.fog]),vertexShader:hi.meshbasic_vert,fragmentShader:hi.meshbasic_frag},lambert:{uniforms:jn([ui.common,ui.specularmap,ui.envmap,ui.aomap,ui.lightmap,ui.emissivemap,ui.fog,ui.lights,{emissive:{value:new Qe(0)}}]),vertexShader:hi.meshlambert_vert,fragmentShader:hi.meshlambert_frag},phong:{uniforms:jn([ui.common,ui.specularmap,ui.envmap,ui.aomap,ui.lightmap,ui.emissivemap,ui.bumpmap,ui.normalmap,ui.displacementmap,ui.fog,ui.lights,{emissive:{value:new Qe(0)},specular:{value:new Qe(1118481)},shininess:{value:30}}]),vertexShader:hi.meshphong_vert,fragmentShader:hi.meshphong_frag},standard:{uniforms:jn([ui.common,ui.envmap,ui.aomap,ui.lightmap,ui.emissivemap,ui.bumpmap,ui.normalmap,ui.displacementmap,ui.roughnessmap,ui.metalnessmap,ui.fog,ui.lights,{emissive:{value:new Qe(0)},roughness:{value:1},metalness:{value:0},envMapIntensity:{value:1}}]),vertexShader:hi.meshphysical_vert,fragmentShader:hi.meshphysical_frag},toon:{uniforms:jn([ui.common,ui.aomap,ui.lightmap,ui.emissivemap,ui.bumpmap,ui.normalmap,ui.displacementmap,ui.gradientmap,ui.fog,ui.lights,{emissive:{value:new Qe(0)}}]),vertexShader:hi.meshtoon_vert,fragmentShader:hi.meshtoon_frag},matcap:{uniforms:jn([ui.common,ui.bumpmap,ui.normalmap,ui.displacementmap,ui.fog,{matcap:{value:null}}]),vertexShader:hi.meshmatcap_vert,fragmentShader:hi.meshmatcap_frag},points:{uniforms:jn([ui.points,ui.fog]),vertexShader:hi.points_vert,fragmentShader:hi.points_frag},dashed:{uniforms:jn([ui.common,ui.fog,{scale:{value:1},dashSize:{value:1},totalSize:{value:2}}]),vertexShader:hi.linedashed_vert,fragmentShader:hi.linedashed_frag},depth:{uniforms:jn([ui.common,ui.displacementmap]),vertexShader:hi.depth_vert,fragmentShader:hi.depth_frag},normal:{uniforms:jn([ui.common,ui.bumpmap,ui.normalmap,ui.displacementmap,{opacity:{value:1}}]),vertexShader:hi.normal_vert,fragmentShader:hi.normal_frag},sprite:{uniforms:jn([ui.sprite,ui.fog]),vertexShader:hi.sprite_vert,fragmentShader:hi.sprite_frag},background:{uniforms:{uvTransform:{value:new 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if(h=e.get("ANGLE_instanced_arrays"),u="drawElementsInstancedANGLE",null===h)return void console.error("THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.");h[u](s,l,a,i*o,c),n.update(l,s,c)}}function Mi(t){const e={frame:0,calls:0,triangles:0,points:0,lines:0};return{memory:{geometries:0,textures:0},render:e,programs:null,autoReset:!0,reset:function(){e.frame++,e.calls=0,e.triangles=0,e.points=0,e.lines=0},update:function(t,n,i){switch(e.calls++,n){case 4:e.triangles+=i*(t/3);break;case 1:e.lines+=i*(t/2);break;case 3:e.lines+=i*(t-1);break;case 2:e.lines+=i*t;break;case 0:e.points+=i*t;break;default:console.error("THREE.WebGLInfo: Unknown draw mode:",n)}}}}function wi(t,e){return t[0]-e[0]}function Si(t,e){return Math.abs(e[1])-Math.abs(t[1])}function Ti(t){const e={},n=new Float32Array(8),i=[];for(let t=0;t<8;t++)i[t]=[t,0];return{update:function(r,s,a,o){const l=r.morphTargetInfluences,c=void 0===l?0:l.length;let h=e[s.id];if(void 0===h||h.length!==c){h=[];for(let t=0;t<c;t++)h[t]=[t,0];e[s.id]=h}for(let t=0;t<c;t++){const e=h[t];e[0]=t,e[1]=l[t]}h.sort(Si);for(let t=0;t<8;t++)t<c&&h[t][1]?(i[t][0]=h[t][0],i[t][1]=h[t][1]):(i[t][0]=Number.MAX_SAFE_INTEGER,i[t][1]=0);i.sort(wi);const u=a.morphTargets&&s.morphAttributes.position,d=a.morphNormals&&s.morphAttributes.normal;let p=0;for(let t=0;t<8;t++){const e=i[t],r=e[0],a=e[1];r!==Number.MAX_SAFE_INTEGER&&a?(u&&s.getAttribute("morphTarget"+t)!==u[r]&&s.setAttribute("morphTarget"+t,u[r]),d&&s.getAttribute("morphNormal"+t)!==d[r]&&s.setAttribute("morphNormal"+t,d[r]),n[t]=a,p+=a):(u&&!0===s.hasAttribute("morphTarget"+t)&&s.deleteAttribute("morphTarget"+t),d&&!0===s.hasAttribute("morphNormal"+t)&&s.deleteAttribute("morphNormal"+t),n[t]=0)}const m=s.morphTargetsRelative?1:1-p;o.getUniforms().setValue(t,"morphTargetBaseInfluence",m),o.getUniforms().setValue(t,"morphTargetInfluences",n)}}}function Ei(t,e,n,i){let r=new WeakMap;function s(t){const e=t.target;e.removeEventListener("dispose",s),n.remove(e.instanceMatrix),null!==e.instanceColor&&n.remove(e.instanceColor)}return{update:function(t){const a=i.render.frame,o=t.geometry,l=e.get(t,o);return r.get(l)!==a&&(e.update(l),r.set(l,a)),t.isInstancedMesh&&(!1===t.hasEventListener("dispose",s)&&t.addEventListener("dispose",s),n.update(t.instanceMatrix,34962),null!==t.instanceColor&&n.update(t.instanceColor,34962)),l},dispose:function(){r=new WeakMap}}}di.physical={uniforms:jn([di.standard.uniforms,{clearcoat:{value:0},clearcoatMap:{value:null},clearcoatRoughness:{value:0},clearcoatRoughnessMap:{value:null},clearcoatNormalScale:{value:new vt(1,1)},clearcoatNormalMap:{value:null},sheen:{value:new Qe(0)},transmission:{value:0},transmissionMap:{value:null},transmissionSamplerSize:{value:new vt},transmissionSamplerMap:{value:null},thickness:{value:0},thicknessMap:{value:null},attenuationDistance:{value:0},attenuationColor:{value:new Qe(0)}}]),vertexShader:hi.meshphysical_vert,fragmentShader:hi.meshphysical_frag};class Ai extends Mt{constructor(t=null,e=1,n=1,i=1){super(null),this.image={data:t,width:e,height:n,depth:i},this.magFilter=p,this.minFilter=p,this.wrapR=u,this.generateMipmaps=!1,this.flipY=!1,this.unpackAlignment=1,this.needsUpdate=!0}}Ai.prototype.isDataTexture2DArray=!0;class Li extends Mt{constructor(t=null,e=1,n=1,i=1){super(null),this.image={data:t,width:e,height:n,depth:i},this.magFilter=p,this.minFilter=p,this.wrapR=u,this.generateMipmaps=!1,this.flipY=!1,this.unpackAlignment=1,this.needsUpdate=!0}}Li.prototype.isDataTexture3D=!0;const Ri=new Mt,Ci=new Ai,Pi=new Li,Di=new Kn,Ii=[],Ni=[],Bi=new Float32Array(16),zi=new Float32Array(9),Fi=new Float32Array(4);function Oi(t,e,n){const i=t[0];if(i<=0||i>0)return t;const r=e*n;let s=Ii[r];if(void 0===s&&(s=new Float32Array(r),Ii[r]=s),0!==e){i.toArray(s,0);for(let i=1,r=0;i!==e;++i)r+=n,t[i].toArray(s,r)}return s}function Hi(t,e){if(t.length!==e.length)return!1;for(let n=0,i=t.length;n<i;n++)if(t[n]!==e[n])return!1;return!0}function Ui(t,e){for(let n=0,i=e.length;n<i;n++)t[n]=e[n]}function Gi(t,e){let n=Ni[e];void 0===n&&(n=new Int32Array(e),Ni[e]=n);for(let i=0;i!==e;++i)n[i]=t.allocateTextureUnit();return n}function ki(t,e){const n=this.cache;n[0]!==e&&(t.uniform1f(this.addr,e),n[0]=e)}function Vi(t,e){const n=this.cache;if(void 0!==e.x)n[0]===e.x&&n[1]===e.y||(t.uniform2f(this.addr,e.x,e.y),n[0]=e.x,n[1]=e.y);else{if(Hi(n,e))return;t.uniform2fv(this.addr,e),Ui(n,e)}}function Wi(t,e){const n=this.cache;if(void 0!==e.x)n[0]===e.x&&n[1]===e.y&&n[2]===e.z||(t.uniform3f(this.addr,e.x,e.y,e.z),n[0]=e.x,n[1]=e.y,n[2]=e.z);else if(void 0!==e.r)n[0]===e.r&&n[1]===e.g&&n[2]===e.b||(t.uniform3f(this.addr,e.r,e.g,e.b),n[0]=e.r,n[1]=e.g,n[2]=e.b);else{if(Hi(n,e))return;t.uniform3fv(this.addr,e),Ui(n,e)}}function ji(t,e){const n=this.cache;if(void 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n=this.cache;Hi(n,e)||(t.uniform3iv(this.addr,e),Ui(n,e))}function Ki(t,e){const n=this.cache;Hi(n,e)||(t.uniform4iv(this.addr,e),Ui(n,e))}function $i(t,e){const n=this.cache;n[0]!==e&&(t.uniform1ui(this.addr,e),n[0]=e)}function tr(t,e){const n=this.cache;Hi(n,e)||(t.uniform2uiv(this.addr,e),Ui(n,e))}function er(t,e){const n=this.cache;Hi(n,e)||(t.uniform3uiv(this.addr,e),Ui(n,e))}function nr(t,e){const n=this.cache;Hi(n,e)||(t.uniform4uiv(this.addr,e),Ui(n,e))}function ir(t,e,n){const i=this.cache,r=n.allocateTextureUnit();i[0]!==r&&(t.uniform1i(this.addr,r),i[0]=r),n.safeSetTexture2D(e||Ri,r)}function rr(t,e,n){const i=this.cache,r=n.allocateTextureUnit();i[0]!==r&&(t.uniform1i(this.addr,r),i[0]=r),n.setTexture3D(e||Pi,r)}function sr(t,e,n){const i=this.cache,r=n.allocateTextureUnit();i[0]!==r&&(t.uniform1i(this.addr,r),i[0]=r),n.safeSetTextureCube(e||Di,r)}function ar(t,e,n){const 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Tr(t,e,n){this.id=t,this.addr=n,this.cache=[],this.size=e.size,this.setValue=function(t){switch(t){case 5126:return or;case 35664:return lr;case 35665:return cr;case 35666:return hr;case 35674:return ur;case 35675:return dr;case 35676:return pr;case 5124:case 35670:return mr;case 35667:case 35671:return fr;case 35668:case 35672:return gr;case 35669:case 35673:return vr;case 5125:return yr;case 36294:return xr;case 36295:return _r;case 36296:return br;case 35678:case 36198:case 36298:case 36306:case 35682:return Mr;case 35680:case 36300:case 36308:case 36293:return wr}}(e.type)}function Er(t){this.id=t,this.seq=[],this.map={}}Tr.prototype.updateCache=function(t){const e=this.cache;t instanceof Float32Array&&e.length!==t.length&&(this.cache=new Float32Array(t.length)),Ui(e,t)},Er.prototype.setValue=function(t,e,n){const i=this.seq;for(let r=0,s=i.length;r!==s;++r){const s=i[r];s.setValue(t,e[s.id],n)}};const Ar=/(\w+)(\])?(\[|\.)?/g;function Lr(t,e){t.seq.push(e),t.map[e.id]=e}function 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0!==r.depthPacking&&r.depthPacking,index0AttributeName:r.index0AttributeName,extensionDerivatives:r.extensions&&r.extensions.derivatives,extensionFragDepth:r.extensions&&r.extensions.fragDepth,extensionDrawBuffers:r.extensions&&r.extensions.drawBuffers,extensionShaderTextureLOD:r.extensions&&r.extensions.shaderTextureLOD,rendererExtensionFragDepth:o||n.has("EXT_frag_depth"),rendererExtensionDrawBuffers:o||n.has("WEBGL_draw_buffers"),rendererExtensionShaderTextureLod:o||n.has("EXT_shader_texture_lod"),customProgramCacheKey:r.customProgramCacheKey()}},getProgramCacheKey:function(e){const n=[];if(e.shaderID?n.push(e.shaderID):(n.push(e.fragmentShader),n.push(e.vertexShader)),void 0!==e.defines)for(const t in e.defines)n.push(t),n.push(e.defines[t]);if(!1===e.isRawShaderMaterial){for(let t=0;t<g.length;t++)n.push(e[g[t]]);n.push(t.outputEncoding),n.push(t.gammaFactor)}return n.push(e.customProgramCacheKey),n.join()},getUniforms:function(t){const e=f[t.type];let n;if(e){const 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n=e[t];if(null===n.id)break;n.id=null,n.object=null,n.geometry=null,n.material=null,n.program=null,n.group=null}},sort:function(t,e){i.length>1&&i.sort(t||$r),r.length>1&&r.sort(e||ts),s.length>1&&s.sort(e||ts)}}}function ns(t){let e=new WeakMap;return{get:function(n,i){let r;return!1===e.has(n)?(r=new es(t),e.set(n,[r])):i>=e.get(n).length?(r=new es(t),e.get(n).push(r)):r=e.get(n)[i],r},dispose:function(){e=new WeakMap}}}function is(){const t={};return{get:function(e){if(void 0!==t[e.id])return t[e.id];let n;switch(e.type){case"DirectionalLight":n={direction:new Rt,color:new Qe};break;case"SpotLight":n={position:new Rt,direction:new Rt,color:new Qe,distance:0,coneCos:0,penumbraCos:0,decay:0};break;case"PointLight":n={position:new Rt,color:new Qe,distance:0,decay:0};break;case"HemisphereLight":n={direction:new Rt,skyColor:new Qe,groundColor:new Qe};break;case"RectAreaLight":n={color:new Qe,position:new Rt,halfWidth:new Rt,halfHeight:new Rt}}return t[e.id]=n,n}}}let rs=0;function ss(t,e){return(e.castShadow?1:0)-(t.castShadow?1:0)}function as(t,e){const n=new is,i=function(){const t={};return{get:function(e){if(void 0!==t[e.id])return t[e.id];let n;switch(e.type){case"DirectionalLight":case"SpotLight":n={shadowBias:0,shadowNormalBias:0,shadowRadius:1,shadowMapSize:new vt};break;case"PointLight":n={shadowBias:0,shadowNormalBias:0,shadowRadius:1,shadowMapSize:new vt,shadowCameraNear:1,shadowCameraFar:1e3}}return t[e.id]=n,n}}}(),r={version:0,hash:{directionalLength:-1,pointLength:-1,spotLength:-1,rectAreaLength:-1,hemiLength:-1,numDirectionalShadows:-1,numPointShadows:-1,numSpotShadows:-1},ambient:[0,0,0],probe:[],directional:[],directionalShadow:[],directionalShadowMap:[],directionalShadowMatrix:[],spot:[],spotShadow:[],spotShadowMap:[],spotShadowMatrix:[],rectArea:[],rectAreaLTC1:null,rectAreaLTC2:null,point:[],pointShadow:[],pointShadowMap:[],pointShadowMatrix:[],hemi:[]};for(let t=0;t<9;t++)r.probe.push(new Rt);const s=new Rt,a=new ae,o=new ae;return{setup:function(s){let a=0,o=0,l=0;for(let t=0;t<9;t++)r.probe[t].set(0,0,0);let c=0,h=0,u=0,d=0,p=0,m=0,f=0,g=0;s.sort(ss);for(let t=0,e=s.length;t<e;t++){const e=s[t],v=e.color,y=e.intensity,x=e.distance,_=e.shadow&&e.shadow.map?e.shadow.map.texture:null;if(e.isAmbientLight)a+=v.r*y,o+=v.g*y,l+=v.b*y;else if(e.isLightProbe)for(let t=0;t<9;t++)r.probe[t].addScaledVector(e.sh.coefficients[t],y);else if(e.isDirectionalLight){const t=n.get(e);if(t.color.copy(e.color).multiplyScalar(e.intensity),e.castShadow){const t=e.shadow,n=i.get(e);n.shadowBias=t.bias,n.shadowNormalBias=t.normalBias,n.shadowRadius=t.radius,n.shadowMapSize=t.mapSize,r.directionalShadow[c]=n,r.directionalShadowMap[c]=_,r.directionalShadowMatrix[c]=e.shadow.matrix,m++}r.directional[c]=t,c++}else if(e.isSpotLight){const t=n.get(e);if(t.position.setFromMatrixPosition(e.matrixWorld),t.color.copy(v).multiplyScalar(y),t.distance=x,t.coneCos=Math.cos(e.angle),t.penumbraCos=Math.cos(e.angle*(1-e.penumbra)),t.decay=e.decay,e.castShadow){const t=e.shadow,n=i.get(e);n.shadowBias=t.bias,n.shadowNormalBias=t.normalBias,n.shadowRadius=t.radius,n.shadowMapSize=t.mapSize,r.spotShadow[u]=n,r.spotShadowMap[u]=_,r.spotShadowMatrix[u]=e.shadow.matrix,g++}r.spot[u]=t,u++}else if(e.isRectAreaLight){const t=n.get(e);t.color.copy(v).multiplyScalar(y),t.halfWidth.set(.5*e.width,0,0),t.halfHeight.set(0,.5*e.height,0),r.rectArea[d]=t,d++}else if(e.isPointLight){const t=n.get(e);if(t.color.copy(e.color).multiplyScalar(e.intensity),t.distance=e.distance,t.decay=e.decay,e.castShadow){const t=e.shadow,n=i.get(e);n.shadowBias=t.bias,n.shadowNormalBias=t.normalBias,n.shadowRadius=t.radius,n.shadowMapSize=t.mapSize,n.shadowCameraNear=t.camera.near,n.shadowCameraFar=t.camera.far,r.pointShadow[h]=n,r.pointShadowMap[h]=_,r.pointShadowMatrix[h]=e.shadow.matrix,f++}r.point[h]=t,h++}else if(e.isHemisphereLight){const t=n.get(e);t.skyColor.copy(e.color).multiplyScalar(y),t.groundColor.copy(e.groundColor).multiplyScalar(y),r.hemi[p]=t,p++}}d>0&&(e.isWebGL2||!0===t.has("OES_texture_float_linear")?(r.rectAreaLTC1=ui.LTC_FLOAT_1,r.rectAreaLTC2=ui.LTC_FLOAT_2):!0===t.has("OES_texture_half_float_linear")?(r.rectAreaLTC1=ui.LTC_HALF_1,r.rectAreaLTC2=ui.LTC_HALF_2):console.error("THREE.WebGLRenderer: Unable to use RectAreaLight. Missing WebGL extensions.")),r.ambient[0]=a,r.ambient[1]=o,r.ambient[2]=l;const v=r.hash;v.directionalLength===c&&v.pointLength===h&&v.spotLength===u&&v.rectAreaLength===d&&v.hemiLength===p&&v.numDirectionalShadows===m&&v.numPointShadows===f&&v.numSpotShadows===g||(r.directional.length=c,r.spot.length=u,r.rectArea.length=d,r.point.length=h,r.hemi.length=p,r.directionalShadow.length=m,r.directionalShadowMap.length=m,r.pointShadow.length=f,r.pointShadowMap.length=f,r.spotShadow.length=g,r.spotShadowMap.length=g,r.directionalShadowMatrix.length=m,r.pointShadowMatrix.length=f,r.spotShadowMatrix.length=g,v.directionalLength=c,v.pointLength=h,v.spotLength=u,v.rectAreaLength=d,v.hemiLength=p,v.numDirectionalShadows=m,v.numPointShadows=f,v.numSpotShadows=g,r.version=rs++)},setupView:function(t,e){let n=0,i=0,l=0,c=0,h=0;const u=e.matrixWorldInverse;for(let e=0,d=t.length;e<d;e++){const d=t[e];if(d.isDirectionalLight){const t=r.directional[n];t.direction.setFromMatrixPosition(d.matrixWorld),s.setFromMatrixPosition(d.target.matrixWorld),t.direction.sub(s),t.direction.transformDirection(u),n++}else if(d.isSpotLight){const t=r.spot[l];t.position.setFromMatrixPosition(d.matrixWorld),t.position.applyMatrix4(u),t.direction.setFromMatrixPosition(d.matrixWorld),s.setFromMatrixPosition(d.target.matrixWorld),t.direction.sub(s),t.direction.transformDirection(u),l++}else if(d.isRectAreaLight){const t=r.rectArea[c];t.position.setFromMatrixPosition(d.matrixWorld),t.position.applyMatrix4(u),o.identity(),a.copy(d.matrixWorld),a.premultiply(u),o.extractRotation(a),t.halfWidth.set(.5*d.width,0,0),t.halfHeight.set(0,.5*d.height,0),t.halfWidth.applyMatrix4(o),t.halfHeight.applyMatrix4(o),c++}else if(d.isPointLight){const t=r.point[i];t.position.setFromMatrixPosition(d.matrixWorld),t.position.applyMatrix4(u),i++}else if(d.isHemisphereLight){const t=r.hemi[h];t.direction.setFromMatrixPosition(d.matrixWorld),t.direction.transformDirection(u),t.direction.normalize(),h++}}},state:r}}function os(t,e){const n=new as(t,e),i=[],r=[];return{init:function(){i.length=0,r.length=0},state:{lightsArray:i,shadowsArray:r,lights:n},setupLights:function(){n.setup(i)},setupLightsView:function(t){n.setupView(i,t)},pushLight:function(t){i.push(t)},pushShadow:function(t){r.push(t)}}}function ls(t,e){let n=new WeakMap;return{get:function(i,r=0){let s;return!1===n.has(i)?(s=new os(t,e),n.set(i,[s])):r>=n.get(i).length?(s=new os(t,e),n.get(i).push(s)):s=n.get(i)[r],s},dispose:function(){n=new WeakMap}}}class cs extends We{constructor(t){super(),this.type="MeshDepthMaterial",this.depthPacking=3200,this.morphTargets=!1,this.map=null,this.alphaMap=null,this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.wireframe=!1,this.wireframeLinewidth=1,this.fog=!1,this.setValues(t)}copy(t){return super.copy(t),this.depthPacking=t.depthPacking,this.morphTargets=t.morphTargets,this.map=t.map,this.alphaMap=t.alphaMap,this.displacementMap=t.displacementMap,this.displacementScale=t.displacementScale,this.displacementBias=t.displacementBias,this.wireframe=t.wireframe,this.wireframeLinewidth=t.wireframeLinewidth,this}}cs.prototype.isMeshDepthMaterial=!0;class hs extends We{constructor(t){super(),this.type="MeshDistanceMaterial",this.referencePosition=new Rt,this.nearDistance=1,this.farDistance=1e3,this.morphTargets=!1,this.map=null,this.alphaMap=null,this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.fog=!1,this.setValues(t)}copy(t){return super.copy(t),this.referencePosition.copy(t.referencePosition),this.nearDistance=t.nearDistance,this.farDistance=t.farDistance,this.morphTargets=t.morphTargets,this.map=t.map,this.alphaMap=t.alphaMap,this.displacementMap=t.displacementMap,this.displacementScale=t.displacementScale,this.displacementBias=t.displacementBias,this}}hs.prototype.isMeshDistanceMaterial=!0;function us(t,e,n){let i=new ai;const r=new vt,s=new vt,a=new St,o=[],l=[],c={},h=n.maxTextureSize,u={0:1,1:0,2:2},d=new Xn({defines:{SAMPLE_RATE:2/8,HALF_SAMPLE_RATE:1/8},uniforms:{shadow_pass:{value:null},resolution:{value:new vt},radius:{value:4}},vertexShader:"void main() {\n\tgl_Position = vec4( position, 1.0 );\n}",fragmentShader:"uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\n#include <packing>\nvoid main() {\n\tfloat mean = 0.0;\n\tfloat squared_mean = 0.0;\n\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy ) / resolution ) );\n\tfor ( float i = -1.0; i < 1.0 ; i += SAMPLE_RATE) {\n\t\t#ifdef HORIZONTAL_PASS\n\t\t\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( i, 0.0 ) * radius ) / resolution ) );\n\t\t\tmean += distribution.x;\n\t\t\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n\t\t#else\n\t\t\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, i ) * radius ) / resolution ) );\n\t\t\tmean += depth;\n\t\t\tsquared_mean += depth * depth;\n\t\t#endif\n\t}\n\tmean = mean * HALF_SAMPLE_RATE;\n\tsquared_mean = squared_mean * HALF_SAMPLE_RATE;\n\tfloat std_dev = sqrt( squared_mean - mean * mean );\n\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}"}),m=d.clone();m.defines.HORIZONTAL_PASS=1;const f=new wn;f.setAttribute("position",new en(new Float32Array([-1,-1,.5,3,-1,.5,-1,3,.5]),3));const v=new Gn(f,d),y=this;function x(n,i){const r=e.update(v);d.uniforms.shadow_pass.value=n.map.texture,d.uniforms.resolution.value=n.mapSize,d.uniforms.radius.value=n.radius,t.setRenderTarget(n.mapPass),t.clear(),t.renderBufferDirect(i,null,r,d,v,null),m.uniforms.shadow_pass.value=n.mapPass.texture,m.uniforms.resolution.value=n.mapSize,m.uniforms.radius.value=n.radius,t.setRenderTarget(n.map),t.clear(),t.renderBufferDirect(i,null,r,m,v,null)}function _(t){const e=t<<0;let n=o[e];return void 0===n&&(n=new cs({depthPacking:3201,morphTargets:t}),o[e]=n),n}function b(t){const e=t<<0;let n=l[e];return void 0===n&&(n=new hs({morphTargets:t}),l[e]=n),n}function M(e,n,i,r,s,a,o){let l=null,h=_,d=e.customDepthMaterial;if(!0===r.isPointLight&&(h=b,d=e.customDistanceMaterial),void 0===d){let t=!1;!0===i.morphTargets&&(t=n.morphAttributes&&n.morphAttributes.position&&n.morphAttributes.position.length>0),l=h(t)}else l=d;if(t.localClippingEnabled&&!0===i.clipShadows&&0!==i.clippingPlanes.length){const t=l.uuid,e=i.uuid;let n=c[t];void 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e=M(n,i,h,a,s.near,s.far,o);t.renderBufferDirect(s,null,i,e,n,c)}}}else if(r.visible){const e=M(n,i,r,a,s.near,s.far,o);t.renderBufferDirect(s,null,i,e,n,null)}}const l=n.children;for(let t=0,e=l.length;t<e;t++)w(l[t],r,s,a,o)}this.enabled=!1,this.autoUpdate=!0,this.needsUpdate=!1,this.type=1,this.render=function(e,n,o){if(!1===y.enabled)return;if(!1===y.autoUpdate&&!1===y.needsUpdate)return;if(0===e.length)return;const l=t.getRenderTarget(),c=t.getActiveCubeFace(),u=t.getActiveMipmapLevel(),d=t.state;d.setBlending(0),d.buffers.color.setClear(1,1,1,1),d.buffers.depth.setTest(!0),d.setScissorTest(!1);for(let l=0,c=e.length;l<c;l++){const c=e[l],u=c.shadow;if(void 0===u){console.warn("THREE.WebGLShadowMap:",c,"has no shadow.");continue}if(!1===u.autoUpdate&&!1===u.needsUpdate)continue;r.copy(u.mapSize);const m=u.getFrameExtents();if(r.multiply(m),s.copy(u.mapSize),(r.x>h||r.y>h)&&(r.x>h&&(s.x=Math.floor(h/m.x),r.x=s.x*m.x,u.mapSize.x=s.x),r.y>h&&(s.y=Math.floor(h/m.y),r.y=s.y*m.y,u.mapSize.y=s.y)),null===u.map&&!u.isPointLightShadow&&3===this.type){const t={minFilter:g,magFilter:g,format:E};u.map=new Tt(r.x,r.y,t),u.map.texture.name=c.name+".shadowMap",u.mapPass=new Tt(r.x,r.y,t),u.camera.updateProjectionMatrix()}if(null===u.map){const t={minFilter:p,magFilter:p,format:E};u.map=new Tt(r.x,r.y,t),u.map.texture.name=c.name+".shadowMap",u.camera.updateProjectionMatrix()}t.setRenderTarget(u.map),t.clear();const f=u.getViewportCount();for(let t=0;t<f;t++){const e=u.getViewport(t);a.set(s.x*e.x,s.y*e.y,s.x*e.z,s.y*e.w),d.viewport(a),u.updateMatrices(c,t),i=u.getFrustum(),w(n,o,u.camera,c,this.type)}u.isPointLightShadow||3!==this.type||x(u,o),u.needsUpdate=!1}y.needsUpdate=!1,t.setRenderTarget(l,c,u)}}function ds(t,e,i){const r=i.isWebGL2;const s=new function(){let e=!1;const n=new St;let 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l=function(t){return!o&&(t.wrapS!==u||t.wrapT!==u||t.minFilter!==p&&t.minFilter!==g)}(i)&&!1===B(i.image),c=N(i.image,l,!1,x),h=B(c)||o,d=s.convert(i.format);let m,f=s.convert(i.type),v=O(i.internalFormat,d,f);X(a,i,h);const y=i.mipmaps;if(i.isDepthTexture)v=6402,o?v=i.type===M?36012:i.type===b?33190:i.type===S?35056:33189:i.type===M&&console.error("WebGLRenderer: Floating point depth texture requires WebGL2."),i.format===A&&6402===v&&i.type!==_&&i.type!==b&&(console.warn("THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture."),i.type=_,f=s.convert(i.type)),i.format===L&&6402===v&&(v=34041,i.type!==S&&(console.warn("THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture."),i.type=S,f=s.convert(i.type))),n.texImage2D(3553,0,v,c.width,c.height,0,d,f,null);else if(i.isDataTexture)if(y.length>0&&h){for(let t=0,e=y.length;t<e;t++)m=y[t],n.texImage2D(3553,t,v,m.width,m.height,0,d,f,m.data);i.generateMipmaps=!1,e.__maxMipLevel=y.length-1}else n.texImage2D(3553,0,v,c.width,c.height,0,d,f,c.data),e.__maxMipLevel=0;else if(i.isCompressedTexture){for(let t=0,e=y.length;t<e;t++)m=y[t],i.format!==E&&i.format!==T?null!==d?n.compressedTexImage2D(3553,t,v,m.width,m.height,0,m.data):console.warn("THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()"):n.texImage2D(3553,t,v,m.width,m.height,0,d,f,m.data);e.__maxMipLevel=y.length-1}else if(i.isDataTexture2DArray)n.texImage3D(35866,0,v,c.width,c.height,c.depth,0,d,f,c.data),e.__maxMipLevel=0;else if(i.isDataTexture3D)n.texImage3D(32879,0,v,c.width,c.height,c.depth,0,d,f,c.data),e.__maxMipLevel=0;else if(y.length>0&&h){for(let t=0,e=y.length;t<e;t++)m=y[t],n.texImage2D(3553,t,v,d,f,m);i.generateMipmaps=!1,e.__maxMipLevel=y.length-1}else n.texImage2D(3553,0,v,d,f,c),e.__maxMipLevel=0;z(i,h)&&F(a,i,c.width,c.height),e.__version=i.version,i.onUpdate&&i.onUpdate(i)}function Z(e,r,a,o,l){const c=s.convert(a.format),h=s.convert(a.type),u=O(a.internalFormat,c,h);32879===l||35866===l?n.texImage3D(l,0,u,r.width,r.height,r.depth,0,c,h,null):n.texImage2D(l,0,u,r.width,r.height,0,c,h,null),n.bindFramebuffer(36160,e),t.framebufferTexture2D(36160,o,l,i.get(a).__webglTexture,0),n.bindFramebuffer(36160,null)}function Q(e,n,i){if(t.bindRenderbuffer(36161,e),n.depthBuffer&&!n.stencilBuffer){let r=33189;if(i){const e=n.depthTexture;e&&e.isDepthTexture&&(e.type===M?r=36012:e.type===b&&(r=33190));const i=$(n);t.renderbufferStorageMultisample(36161,i,r,n.width,n.height)}else t.renderbufferStorage(36161,r,n.width,n.height);t.framebufferRenderbuffer(36160,36096,36161,e)}else if(n.depthBuffer&&n.stencilBuffer){if(i){const e=$(n);t.renderbufferStorageMultisample(36161,e,35056,n.width,n.height)}else 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tt=!1,et=!1;this.allocateTextureUnit=function(){const t=k;return t>=l&&console.warn("THREE.WebGLTextures: Trying to use "+t+" texture units while this GPU supports only "+l),k+=1,t},this.resetTextureUnits=function(){k=0},this.setTexture2D=V,this.setTexture2DArray=function(t,e){const r=i.get(t);t.version>0&&r.__version!==t.version?J(r,t,e):(n.activeTexture(33984+e),n.bindTexture(35866,r.__webglTexture))},this.setTexture3D=function(t,e){const r=i.get(t);t.version>0&&r.__version!==t.version?J(r,t,e):(n.activeTexture(33984+e),n.bindTexture(32879,r.__webglTexture))},this.setTextureCube=W,this.setupRenderTarget=function(e){const l=e.texture,c=i.get(e),h=i.get(l);e.addEventListener("dispose",G),!0!==e.isWebGLMultipleRenderTargets&&(h.__webglTexture=t.createTexture(),h.__version=l.version,a.memory.textures++);const u=!0===e.isWebGLCubeRenderTarget,d=!0===e.isWebGLMultipleRenderTargets,p=!0===e.isWebGLMultisampleRenderTarget,m=l.isDataTexture3D||l.isDataTexture2DArray,f=B(e)||o;if(!o||l.format!==T||l.type!==M&&l.type!==w||(l.format=E,console.warn("THREE.WebGLRenderer: Rendering to textures with RGB format is not supported. 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Use their .texture property instead."),tt=!0),t=t.texture),V(t,e)},this.safeSetTextureCube=function(t,e){t&&t.isWebGLCubeRenderTarget&&(!1===et&&(console.warn("THREE.WebGLTextures.safeSetTextureCube: don't use cube render targets as textures. Use their .texture property instead."),et=!0),t=t.texture),W(t,e)}}function ms(t,e,n){const i=n.isWebGL2;return{convert:function(t){let n;if(t===x)return 5121;if(1017===t)return 32819;if(1018===t)return 32820;if(1019===t)return 33635;if(1010===t)return 5120;if(1011===t)return 5122;if(t===_)return 5123;if(1013===t)return 5124;if(t===b)return 5125;if(t===M)return 5126;if(t===w)return i?5131:(n=e.get("OES_texture_half_float"),null!==n?n.HALF_FLOAT_OES:null);if(1021===t)return 6406;if(t===T)return 6407;if(t===E)return 6408;if(1024===t)return 6409;if(1025===t)return 6410;if(t===A)return 6402;if(t===L)return 34041;if(1028===t)return 6403;if(1029===t)return 36244;if(1030===t)return 33319;if(1031===t)return 33320;if(1032===t)return 36248;if(1033===t)return 36249;if(t===R||t===C||t===P||t===D){if(n=e.get("WEBGL_compressed_texture_s3tc"),null===n)return null;if(t===R)return n.COMPRESSED_RGB_S3TC_DXT1_EXT;if(t===C)return n.COMPRESSED_RGBA_S3TC_DXT1_EXT;if(t===P)return n.COMPRESSED_RGBA_S3TC_DXT3_EXT;if(t===D)return n.COMPRESSED_RGBA_S3TC_DXT5_EXT}if(t===I||t===N||t===B||t===z){if(n=e.get("WEBGL_compressed_texture_pvrtc"),null===n)return null;if(t===I)return n.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;if(t===N)return n.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;if(t===B)return n.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;if(t===z)return n.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG}if(36196===t)return n=e.get("WEBGL_compressed_texture_etc1"),null!==n?n.COMPRESSED_RGB_ETC1_WEBGL:null;if((t===F||t===O)&&(n=e.get("WEBGL_compressed_texture_etc"),null!==n)){if(t===F)return n.COMPRESSED_RGB8_ETC2;if(t===O)return n.COMPRESSED_RGBA8_ETC2_EAC}return 37808===t||37809===t||37810===t||37811===t||37812===t||37813===t||37814===t||37815===t||37816===t||37817===t||37818===t||37819===t||37820===t||37821===t||37840===t||37841===t||37842===t||37843===t||37844===t||37845===t||37846===t||37847===t||37848===t||37849===t||37850===t||37851===t||37852===t||37853===t?(n=e.get("WEBGL_compressed_texture_astc"),null!==n?t:null):36492===t?(n=e.get("EXT_texture_compression_bptc"),null!==n?t:null):t===S?i?34042:(n=e.get("WEBGL_depth_texture"),null!==n?n.UNSIGNED_INT_24_8_WEBGL:null):void 0}}}class fs extends Jn{constructor(t=[]){super(),this.cameras=t}}fs.prototype.isArrayCamera=!0;class gs extends Pe{constructor(){super(),this.type="Group"}}gs.prototype.isGroup=!0;const vs={type:"move"};class ys{constructor(){this._targetRay=null,this._grip=null,this._hand=null}getHandSpace(){return null===this._hand&&(this._hand=new gs,this._hand.matrixAutoUpdate=!1,this._hand.visible=!1,this._hand.joints={},this._hand.inputState={pinching:!1}),this._hand}getTargetRaySpace(){return null===this._targetRay&&(this._targetRay=new gs,this._targetRay.matrixAutoUpdate=!1,this._targetRay.visible=!1,this._targetRay.hasLinearVelocity=!1,this._targetRay.linearVelocity=new Rt,this._targetRay.hasAngularVelocity=!1,this._targetRay.angularVelocity=new Rt),this._targetRay}getGripSpace(){return null===this._grip&&(this._grip=new gs,this._grip.matrixAutoUpdate=!1,this._grip.visible=!1,this._grip.hasLinearVelocity=!1,this._grip.linearVelocity=new Rt,this._grip.hasAngularVelocity=!1,this._grip.angularVelocity=new Rt),this._grip}dispatchEvent(t){return null!==this._targetRay&&this._targetRay.dispatchEvent(t),null!==this._grip&&this._grip.dispatchEvent(t),null!==this._hand&&this._hand.dispatchEvent(t),this}disconnect(t){return this.dispatchEvent({type:"disconnected",data:t}),null!==this._targetRay&&(this._targetRay.visible=!1),null!==this._grip&&(this._grip.visible=!1),null!==this._hand&&(this._hand.visible=!1),this}update(t,e,n){let i=null,r=null,s=null;const a=this._targetRay,o=this._grip,l=this._hand;if(t&&"visible-blurred"!==e.session.visibilityState)if(null!==a&&(i=e.getPose(t.targetRaySpace,n),null!==i&&(a.matrix.fromArray(i.transform.matrix),a.matrix.decompose(a.position,a.rotation,a.scale),i.linearVelocity?(a.hasLinearVelocity=!0,a.linearVelocity.copy(i.linearVelocity)):a.hasLinearVelocity=!1,i.angularVelocity?(a.hasAngularVelocity=!0,a.angularVelocity.copy(i.angularVelocity)):a.hasAngularVelocity=!1,this.dispatchEvent(vs))),l&&t.hand){s=!0;for(const i of t.hand.values()){const t=e.getJointPose(i,n);if(void 0===l.joints[i.jointName]){const t=new gs;t.matrixAutoUpdate=!1,t.visible=!1,l.joints[i.jointName]=t,l.add(t)}const r=l.joints[i.jointName];null!==t&&(r.matrix.fromArray(t.transform.matrix),r.matrix.decompose(r.position,r.rotation,r.scale),r.jointRadius=t.radius),r.visible=null!==t}const i=l.joints["index-finger-tip"],r=l.joints["thumb-tip"],a=i.position.distanceTo(r.position),o=.02,c=.005;l.inputState.pinching&&a>o+c?(l.inputState.pinching=!1,this.dispatchEvent({type:"pinchend",handedness:t.handedness,target:this})):!l.inputState.pinching&&a<=o-c&&(l.inputState.pinching=!0,this.dispatchEvent({type:"pinchstart",handedness:t.handedness,target:this}))}else null!==o&&t.gripSpace&&(r=e.getPose(t.gripSpace,n),null!==r&&(o.matrix.fromArray(r.transform.matrix),o.matrix.decompose(o.position,o.rotation,o.scale),r.linearVelocity?(o.hasLinearVelocity=!0,o.linearVelocity.copy(r.linearVelocity)):o.hasLinearVelocity=!1,r.angularVelocity?(o.hasAngularVelocity=!0,o.angularVelocity.copy(r.angularVelocity)):o.hasAngularVelocity=!1));return null!==a&&(a.visible=null!==i),null!==o&&(o.visible=null!==r),null!==l&&(l.visible=null!==s),this}}class xs extends rt{constructor(t,e){super();const n=this,i=t.state;let r=null,s=1,a=null,o="local-floor",l=null,c=null,h=null,u=null;const d=[],p=new Map,m=new Jn;m.layers.enable(1),m.viewport=new St;const f=new Jn;f.layers.enable(2),f.viewport=new St;const g=[m,f],v=new fs;v.layers.enable(1),v.layers.enable(2);let y=null,x=null;function _(t){const e=p.get(t.inputSource);e&&e.dispatchEvent({type:t.type,data:t.inputSource})}function b(){p.forEach((function(t,e){t.disconnect(e)})),p.clear(),y=null,x=null,i.bindXRFramebuffer(null),t.setRenderTarget(t.getRenderTarget()),A.stop(),n.isPresenting=!1,n.dispatchEvent({type:"sessionend"})}function M(t){const e=r.inputSources;for(let t=0;t<d.length;t++)p.set(e[t],d[t]);for(let e=0;e<t.removed.length;e++){const n=t.removed[e],i=p.get(n);i&&(i.dispatchEvent({type:"disconnected",data:n}),p.delete(n))}for(let e=0;e<t.added.length;e++){const n=t.added[e],i=p.get(n);i&&i.dispatchEvent({type:"connected",data:n})}}this.cameraAutoUpdate=!0,this.enabled=!1,this.isPresenting=!1,this.getController=function(t){let e=d[t];return void 0===e&&(e=new ys,d[t]=e),e.getTargetRaySpace()},this.getControllerGrip=function(t){let e=d[t];return void 0===e&&(e=new ys,d[t]=e),e.getGripSpace()},this.getHand=function(t){let e=d[t];return void 0===e&&(e=new ys,d[t]=e),e.getHandSpace()},this.setFramebufferScaleFactor=function(t){s=t,!0===n.isPresenting&&console.warn("THREE.WebXRManager: Cannot change framebuffer scale while presenting.")},this.setReferenceSpaceType=function(t){o=t,!0===n.isPresenting&&console.warn("THREE.WebXRManager: Cannot change reference space type while presenting.")},this.getReferenceSpace=function(){return a},this.getSession=function(){return r},this.setSession=async function(t){if(r=t,null!==r){r.addEventListener("select",_),r.addEventListener("selectstart",_),r.addEventListener("selectend",_),r.addEventListener("squeeze",_),r.addEventListener("squeezestart",_),r.addEventListener("squeezeend",_),r.addEventListener("end",b),r.addEventListener("inputsourceschange",M);const t=e.getContextAttributes();if(!0!==t.xrCompatible&&await e.makeXRCompatible(),void 0===r.renderState.layers){const n={antialias:t.antialias,alpha:t.alpha,depth:t.depth,stencil:t.stencil,framebufferScaleFactor:s},i=new XRWebGLLayer(r,e,n);r.updateRenderState({baseLayer:i})}else{let n=0;t.depth&&(n=t.stencil?34041:6402);const i={colorFormat:t.alpha?6408:6407,depthFormat:n,scaleFactor:s};c=new XRWebGLBinding(r,e),u=c.createProjectionLayer(i),h=e.createFramebuffer(),r.updateRenderState({layers:[u]})}a=await r.requestReferenceSpace(o),A.setContext(r),A.start(),n.isPresenting=!0,n.dispatchEvent({type:"sessionstart"})}};const w=new Rt,S=new Rt;function T(t,e){null===e?t.matrixWorld.copy(t.matrix):t.matrixWorld.multiplyMatrices(e.matrixWorld,t.matrix),t.matrixWorldInverse.copy(t.matrixWorld).invert()}this.updateCamera=function(t){if(null===r)return;v.near=f.near=m.near=t.near,v.far=f.far=m.far=t.far,y===v.near&&x===v.far||(r.updateRenderState({depthNear:v.near,depthFar:v.far}),y=v.near,x=v.far);const e=t.parent,n=v.cameras;T(v,e);for(let t=0;t<n.length;t++)T(n[t],e);v.matrixWorld.decompose(v.position,v.quaternion,v.scale),t.position.copy(v.position),t.quaternion.copy(v.quaternion),t.scale.copy(v.scale),t.matrix.copy(v.matrix),t.matrixWorld.copy(v.matrixWorld);const i=t.children;for(let t=0,e=i.length;t<e;t++)i[t].updateMatrixWorld(!0);2===n.length?function(t,e,n){w.setFromMatrixPosition(e.matrixWorld),S.setFromMatrixPosition(n.matrixWorld);const i=w.distanceTo(S),r=e.projectionMatrix.elements,s=n.projectionMatrix.elements,a=r[14]/(r[10]-1),o=r[14]/(r[10]+1),l=(r[9]+1)/r[5],c=(r[9]-1)/r[5],h=(r[8]-1)/r[0],u=(s[8]+1)/s[0],d=a*h,p=a*u,m=i/(-h+u),f=m*-h;e.matrixWorld.decompose(t.position,t.quaternion,t.scale),t.translateX(f),t.translateZ(m),t.matrixWorld.compose(t.position,t.quaternion,t.scale),t.matrixWorldInverse.copy(t.matrixWorld).invert();const g=a+m,v=o+m,y=d-f,x=p+(i-f),_=l*o/v*g,b=c*o/v*g;t.projectionMatrix.makePerspective(y,x,_,b,g,v)}(v,m,f):v.projectionMatrix.copy(m.projectionMatrix)},this.getCamera=function(){return v};let E=null;const A=new oi;A.setAnimationLoop((function(t,n){if(l=n.getViewerPose(a),null!==l){const t=l.views,n=r.renderState.baseLayer;void 0===r.renderState.layers&&i.bindXRFramebuffer(n.framebuffer);let s=!1;t.length!==v.cameras.length&&(v.cameras.length=0,s=!0);for(let a=0;a<t.length;a++){const o=t[a];let l=null;if(void 0===r.renderState.layers)l=n.getViewport(o);else{const t=c.getViewSubImage(u,o);i.bindXRFramebuffer(h),e.framebufferTexture2D(36160,36064,3553,t.colorTexture,0),void 0!==t.depthStencilTexture&&e.framebufferTexture2D(36160,36096,3553,t.depthStencilTexture,0),l=t.viewport}const d=g[a];d.matrix.fromArray(o.transform.matrix),d.projectionMatrix.fromArray(o.projectionMatrix),d.viewport.set(l.x,l.y,l.width,l.height),0===a&&v.matrix.copy(d.matrix),!0===s&&v.cameras.push(d)}}const s=r.inputSources;for(let t=0;t<d.length;t++){const e=d[t],i=s[t];e.update(i,n,a)}E&&E(t,n)})),this.setAnimationLoop=function(t){E=t},this.dispose=function(){}}}function _s(t){function e(e,n){e.opacity.value=n.opacity,n.color&&e.diffuse.value.copy(n.color),n.emissive&&e.emissive.value.copy(n.emissive).multiplyScalar(n.emissiveIntensity),n.map&&(e.map.value=n.map),n.alphaMap&&(e.alphaMap.value=n.alphaMap),n.specularMap&&(e.specularMap.value=n.specularMap);const i=t.get(n).envMap;if(i){e.envMap.value=i,e.flipEnvMap.value=i.isCubeTexture&&i._needsFlipEnvMap?-1:1,e.reflectivity.value=n.reflectivity,e.refractionRatio.value=n.refractionRatio;const r=t.get(i).__maxMipLevel;void 0!==r&&(e.maxMipLevel.value=r)}let r,s;n.lightMap&&(e.lightMap.value=n.lightMap,e.lightMapIntensity.value=n.lightMapIntensity),n.aoMap&&(e.aoMap.value=n.aoMap,e.aoMapIntensity.value=n.aoMapIntensity),n.map?r=n.map:n.specularMap?r=n.specularMap:n.displacementMap?r=n.displacementMap:n.normalMap?r=n.normalMap:n.bumpMap?r=n.bumpMap:n.roughnessMap?r=n.roughnessMap:n.metalnessMap?r=n.metalnessMap:n.alphaMap?r=n.alphaMap:n.emissiveMap?r=n.emissiveMap:n.clearcoatMap?r=n.clearcoatMap:n.clearcoatNormalMap?r=n.clearcoatNormalMap:n.clearcoatRoughnessMap&&(r=n.clearcoatRoughnessMap),void 0!==r&&(r.isWebGLRenderTarget&&(r=r.texture),!0===r.matrixAutoUpdate&&r.updateMatrix(),e.uvTransform.value.copy(r.matrix)),n.aoMap?s=n.aoMap:n.lightMap&&(s=n.lightMap),void 0!==s&&(s.isWebGLRenderTarget&&(s=s.texture),!0===s.matrixAutoUpdate&&s.updateMatrix(),e.uv2Transform.value.copy(s.matrix))}function n(e,n){e.roughness.value=n.roughness,e.metalness.value=n.metalness,n.roughnessMap&&(e.roughnessMap.value=n.roughnessMap),n.metalnessMap&&(e.metalnessMap.value=n.metalnessMap),n.emissiveMap&&(e.emissiveMap.value=n.emissiveMap),n.bumpMap&&(e.bumpMap.value=n.bumpMap,e.bumpScale.value=n.bumpScale,1===n.side&&(e.bumpScale.value*=-1)),n.normalMap&&(e.normalMap.value=n.normalMap,e.normalScale.value.copy(n.normalScale),1===n.side&&e.normalScale.value.negate()),n.displacementMap&&(e.displacementMap.value=n.displacementMap,e.displacementScale.value=n.displacementScale,e.displacementBias.value=n.displacementBias);t.get(n).envMap&&(e.envMapIntensity.value=n.envMapIntensity)}return{refreshFogUniforms:function(t,e){t.fogColor.value.copy(e.color),e.isFog?(t.fogNear.value=e.near,t.fogFar.value=e.far):e.isFogExp2&&(t.fogDensity.value=e.density)},refreshMaterialUniforms:function(t,i,r,s,a){i.isMeshBasicMaterial?e(t,i):i.isMeshLambertMaterial?(e(t,i),function(t,e){e.emissiveMap&&(t.emissiveMap.value=e.emissiveMap)}(t,i)):i.isMeshToonMaterial?(e(t,i),function(t,e){e.gradientMap&&(t.gradientMap.value=e.gradientMap);e.emissiveMap&&(t.emissiveMap.value=e.emissiveMap);e.bumpMap&&(t.bumpMap.value=e.bumpMap,t.bumpScale.value=e.bumpScale,1===e.side&&(t.bumpScale.value*=-1));e.normalMap&&(t.normalMap.value=e.normalMap,t.normalScale.value.copy(e.normalScale),1===e.side&&t.normalScale.value.negate());e.displacementMap&&(t.displacementMap.value=e.displacementMap,t.displacementScale.value=e.displacementScale,t.displacementBias.value=e.displacementBias)}(t,i)):i.isMeshPhongMaterial?(e(t,i),function(t,e){t.specular.value.copy(e.specular),t.shininess.value=Math.max(e.shininess,1e-4),e.emissiveMap&&(t.emissiveMap.value=e.emissiveMap);e.bumpMap&&(t.bumpMap.value=e.bumpMap,t.bumpScale.value=e.bumpScale,1===e.side&&(t.bumpScale.value*=-1));e.normalMap&&(t.normalMap.value=e.normalMap,t.normalScale.value.copy(e.normalScale),1===e.side&&t.normalScale.value.negate());e.displacementMap&&(t.displacementMap.value=e.displacementMap,t.displacementScale.value=e.displacementScale,t.displacementBias.value=e.displacementBias)}(t,i)):i.isMeshStandardMaterial?(e(t,i),i.isMeshPhysicalMaterial?function(t,e,i){n(t,e),t.reflectivity.value=e.reflectivity,t.clearcoat.value=e.clearcoat,t.clearcoatRoughness.value=e.clearcoatRoughness,e.sheen&&t.sheen.value.copy(e.sheen);e.clearcoatMap&&(t.clearcoatMap.value=e.clearcoatMap);e.clearcoatRoughnessMap&&(t.clearcoatRoughnessMap.value=e.clearcoatRoughnessMap);e.clearcoatNormalMap&&(t.clearcoatNormalScale.value.copy(e.clearcoatNormalScale),t.clearcoatNormalMap.value=e.clearcoatNormalMap,1===e.side&&t.clearcoatNormalScale.value.negate());t.transmission.value=e.transmission,e.transmissionMap&&(t.transmissionMap.value=e.transmissionMap);e.transmission>0&&(t.transmissionSamplerMap.value=i.texture,t.transmissionSamplerSize.value.set(i.width,i.height));t.thickness.value=e.thickness,e.thicknessMap&&(t.thicknessMap.value=e.thicknessMap);t.attenuationDistance.value=e.attenuationDistance,t.attenuationColor.value.copy(e.attenuationColor)}(t,i,a):n(t,i)):i.isMeshMatcapMaterial?(e(t,i),function(t,e){e.matcap&&(t.matcap.value=e.matcap);e.bumpMap&&(t.bumpMap.value=e.bumpMap,t.bumpScale.value=e.bumpScale,1===e.side&&(t.bumpScale.value*=-1));e.normalMap&&(t.normalMap.value=e.normalMap,t.normalScale.value.copy(e.normalScale),1===e.side&&t.normalScale.value.negate());e.displacementMap&&(t.displacementMap.value=e.displacementMap,t.displacementScale.value=e.displacementScale,t.displacementBias.value=e.displacementBias)}(t,i)):i.isMeshDepthMaterial?(e(t,i),function(t,e){e.displacementMap&&(t.displacementMap.value=e.displacementMap,t.displacementScale.value=e.displacementScale,t.displacementBias.value=e.displacementBias)}(t,i)):i.isMeshDistanceMaterial?(e(t,i),function(t,e){e.displacementMap&&(t.displacementMap.value=e.displacementMap,t.displacementScale.value=e.displacementScale,t.displacementBias.value=e.displacementBias);t.referencePosition.value.copy(e.referencePosition),t.nearDistance.value=e.nearDistance,t.farDistance.value=e.farDistance}(t,i)):i.isMeshNormalMaterial?(e(t,i),function(t,e){e.bumpMap&&(t.bumpMap.value=e.bumpMap,t.bumpScale.value=e.bumpScale,1===e.side&&(t.bumpScale.value*=-1));e.normalMap&&(t.normalMap.value=e.normalMap,t.normalScale.value.copy(e.normalScale),1===e.side&&t.normalScale.value.negate());e.displacementMap&&(t.displacementMap.value=e.displacementMap,t.displacementScale.value=e.displacementScale,t.displacementBias.value=e.displacementBias)}(t,i)):i.isLineBasicMaterial?(function(t,e){t.diffuse.value.copy(e.color),t.opacity.value=e.opacity}(t,i),i.isLineDashedMaterial&&function(t,e){t.dashSize.value=e.dashSize,t.totalSize.value=e.dashSize+e.gapSize,t.scale.value=e.scale}(t,i)):i.isPointsMaterial?function(t,e,n,i){t.diffuse.value.copy(e.color),t.opacity.value=e.opacity,t.size.value=e.size*n,t.scale.value=.5*i,e.map&&(t.map.value=e.map);e.alphaMap&&(t.alphaMap.value=e.alphaMap);let r;e.map?r=e.map:e.alphaMap&&(r=e.alphaMap);void 0!==r&&(!0===r.matrixAutoUpdate&&r.updateMatrix(),t.uvTransform.value.copy(r.matrix))}(t,i,r,s):i.isSpriteMaterial?function(t,e){t.diffuse.value.copy(e.color),t.opacity.value=e.opacity,t.rotation.value=e.rotation,e.map&&(t.map.value=e.map);e.alphaMap&&(t.alphaMap.value=e.alphaMap);let n;e.map?n=e.map:e.alphaMap&&(n=e.alphaMap);void 0!==n&&(!0===n.matrixAutoUpdate&&n.updateMatrix(),t.uvTransform.value.copy(n.matrix))}(t,i):i.isShadowMaterial?(t.color.value.copy(i.color),t.opacity.value=i.opacity):i.isShaderMaterial&&(i.uniformsNeedUpdate=!1)}}}function bs(t={}){const e=void 0!==t.canvas?t.canvas:function(){const t=document.createElementNS("http://www.w3.org/1999/xhtml","canvas");return t.style.display="block",t}(),n=void 0!==t.context?t.context:null,i=void 0!==t.alpha&&t.alpha,r=void 0===t.depth||t.depth,s=void 0===t.stencil||t.stencil,a=void 0!==t.antialias&&t.antialias,o=void 0===t.premultipliedAlpha||t.premultipliedAlpha,l=void 0!==t.preserveDrawingBuffer&&t.preserveDrawingBuffer,c=void 0!==t.powerPreference?t.powerPreference:"default",h=void 0!==t.failIfMajorPerformanceCaveat&&t.failIfMajorPerformanceCaveat;let d=null,m=null;const f=[],g=[];this.domElement=e,this.debug={checkShaderErrors:!0},this.autoClear=!0,this.autoClearColor=!0,this.autoClearDepth=!0,this.autoClearStencil=!0,this.sortObjects=!0,this.clippingPlanes=[],this.localClippingEnabled=!1,this.gammaFactor=2,this.outputEncoding=X,this.physicallyCorrectLights=!1,this.toneMapping=0,this.toneMappingExposure=1;const v=this;let _=!1,b=0,S=0,T=null,A=-1,L=null;const R=new St,C=new St;let P=null,D=e.width,I=e.height,N=1,B=null,z=null;const F=new St(0,0,D,I),O=new St(0,0,D,I);let H=!1;const U=[],G=new ai;let k=!1,V=!1,W=null;const j=new ae,q=new Rt,Y={background:null,fog:null,environment:null,overrideMaterial:null,isScene:!0};function J(){return null===T?N:1}let Z,Q,K,$,tt,et,nt,it,rt,st,at,ot,lt,ct,ht,ut,dt,pt,mt,ft,gt,vt,yt=n;function xt(t,n){for(let i=0;i<t.length;i++){const r=t[i],s=e.getContext(r,n);if(null!==s)return s}return null}try{const t={alpha:i,depth:r,stencil:s,antialias:a,premultipliedAlpha:o,preserveDrawingBuffer:l,powerPreference:c,failIfMajorPerformanceCaveat:h};if(e.addEventListener("webglcontextlost",Mt,!1),e.addEventListener("webglcontextrestored",wt,!1),null===yt){const e=["webgl2","webgl","experimental-webgl"];if(!0===v.isWebGL1Renderer&&e.shift(),yt=xt(e,t),null===yt)throw xt(e)?new Error("Error creating WebGL context with your selected attributes."):new Error("Error creating WebGL context.")}void 0===yt.getShaderPrecisionFormat&&(yt.getShaderPrecisionFormat=function(){return{rangeMin:1,rangeMax:1,precision:1}})}catch(t){throw console.error("THREE.WebGLRenderer: "+t.message),t}function _t(){Z=new xi(yt),Q=new gi(yt,Z,t),Z.init(Q),gt=new ms(yt,Z,Q),K=new ds(yt,Z,Q),U[0]=1029,$=new Mi(yt),tt=new Kr,et=new ps(yt,Z,K,tt,Q,gt,$),nt=new yi(v),it=new li(yt,Q),vt=new mi(yt,Z,it,Q),rt=new _i(yt,it,$,vt),st=new Ei(yt,rt,it,$),pt=new Ti(yt),ht=new vi(tt),at=new Qr(v,nt,Z,Q,vt,ht),ot=new _s(tt),lt=new ns(tt),ct=new ls(Z,Q),dt=new pi(v,nt,K,st,o),ut=new us(v,st,Q),mt=new fi(yt,Z,$,Q),ft=new bi(yt,Z,$,Q),$.programs=at.programs,v.capabilities=Q,v.extensions=Z,v.properties=tt,v.renderLists=lt,v.shadowMap=ut,v.state=K,v.info=$}_t();const bt=new xs(v,yt);function Mt(t){t.preventDefault(),console.log("THREE.WebGLRenderer: Context Lost."),_=!0}function wt(){console.log("THREE.WebGLRenderer: Context Restored."),_=!1;const t=$.autoReset,e=ut.enabled,n=ut.autoUpdate,i=ut.needsUpdate,r=ut.type;_t(),$.autoReset=t,ut.enabled=e,ut.autoUpdate=n,ut.needsUpdate=i,ut.type=r}function Et(t){const e=t.target;e.removeEventListener("dispose",Et),function(t){(function(t){const e=tt.get(t).programs;void 0!==e&&e.forEach((function(t){at.releaseProgram(t)}))})(t),tt.remove(t)}(e)}this.xr=bt,this.getContext=function(){return yt},this.getContextAttributes=function(){return yt.getContextAttributes()},this.forceContextLoss=function(){const t=Z.get("WEBGL_lose_context");t&&t.loseContext()},this.forceContextRestore=function(){const t=Z.get("WEBGL_lose_context");t&&t.restoreContext()},this.getPixelRatio=function(){return N},this.setPixelRatio=function(t){void 0!==t&&(N=t,this.setSize(D,I,!1))},this.getSize=function(t){return t.set(D,I)},this.setSize=function(t,n,i){bt.isPresenting?console.warn("THREE.WebGLRenderer: Can't change size while VR device is presenting."):(D=t,I=n,e.width=Math.floor(t*N),e.height=Math.floor(n*N),!1!==i&&(e.style.width=t+"px",e.style.height=n+"px"),this.setViewport(0,0,t,n))},this.getDrawingBufferSize=function(t){return t.set(D*N,I*N).floor()},this.setDrawingBufferSize=function(t,n,i){D=t,I=n,N=i,e.width=Math.floor(t*i),e.height=Math.floor(n*i),this.setViewport(0,0,t,n)},this.getCurrentViewport=function(t){return t.copy(R)},this.getViewport=function(t){return t.copy(F)},this.setViewport=function(t,e,n,i){t.isVector4?F.set(t.x,t.y,t.z,t.w):F.set(t,e,n,i),K.viewport(R.copy(F).multiplyScalar(N).floor())},this.getScissor=function(t){return t.copy(O)},this.setScissor=function(t,e,n,i){t.isVector4?O.set(t.x,t.y,t.z,t.w):O.set(t,e,n,i),K.scissor(C.copy(O).multiplyScalar(N).floor())},this.getScissorTest=function(){return H},this.setScissorTest=function(t){K.setScissorTest(H=t)},this.setOpaqueSort=function(t){B=t},this.setTransparentSort=function(t){z=t},this.getClearColor=function(t){return t.copy(dt.getClearColor())},this.setClearColor=function(){dt.setClearColor.apply(dt,arguments)},this.getClearAlpha=function(){return dt.getClearAlpha()},this.setClearAlpha=function(){dt.setClearAlpha.apply(dt,arguments)},this.clear=function(t,e,n){let i=0;(void 0===t||t)&&(i|=16384),(void 0===e||e)&&(i|=256),(void 0===n||n)&&(i|=1024),yt.clear(i)},this.clearColor=function(){this.clear(!0,!1,!1)},this.clearDepth=function(){this.clear(!1,!0,!1)},this.clearStencil=function(){this.clear(!1,!1,!0)},this.dispose=function(){e.removeEventListener("webglcontextlost",Mt,!1),e.removeEventListener("webglcontextrestored",wt,!1),lt.dispose(),ct.dispose(),tt.dispose(),nt.dispose(),st.dispose(),vt.dispose(),bt.dispose(),bt.removeEventListener("sessionstart",Ct),bt.removeEventListener("sessionend",Pt),W&&(W.dispose(),W=null),Dt.stop()},this.renderBufferImmediate=function(t,e){vt.initAttributes();const n=tt.get(t);t.hasPositions&&!n.position&&(n.position=yt.createBuffer()),t.hasNormals&&!n.normal&&(n.normal=yt.createBuffer()),t.hasUvs&&!n.uv&&(n.uv=yt.createBuffer()),t.hasColors&&!n.color&&(n.color=yt.createBuffer());const i=e.getAttributes();t.hasPositions&&(yt.bindBuffer(34962,n.position),yt.bufferData(34962,t.positionArray,35048),vt.enableAttribute(i.position),yt.vertexAttribPointer(i.position,3,5126,!1,0,0)),t.hasNormals&&(yt.bindBuffer(34962,n.normal),yt.bufferData(34962,t.normalArray,35048),vt.enableAttribute(i.normal),yt.vertexAttribPointer(i.normal,3,5126,!1,0,0)),t.hasUvs&&(yt.bindBuffer(34962,n.uv),yt.bufferData(34962,t.uvArray,35048),vt.enableAttribute(i.uv),yt.vertexAttribPointer(i.uv,2,5126,!1,0,0)),t.hasColors&&(yt.bindBuffer(34962,n.color),yt.bufferData(34962,t.colorArray,35048),vt.enableAttribute(i.color),yt.vertexAttribPointer(i.color,3,5126,!1,0,0)),vt.disableUnusedAttributes(),yt.drawArrays(4,0,t.count),t.count=0},this.renderBufferDirect=function(t,e,n,i,r,s){null===e&&(e=Y);const a=r.isMesh&&r.matrixWorld.determinant()<0,o=Ot(t,e,i,r);K.setMaterial(i,a);let l=n.index;const c=n.attributes.position;if(null===l){if(void 0===c||0===c.count)return}else if(0===l.count)return;let h,u=1;!0===i.wireframe&&(l=rt.getWireframeAttribute(n),u=2),(i.morphTargets||i.morphNormals)&&pt.update(r,n,i,o),vt.setup(r,i,o,n,l);let d=mt;null!==l&&(h=it.get(l),d=ft,d.setIndex(h));const p=null!==l?l.count:c.count,m=n.drawRange.start*u,f=n.drawRange.count*u,g=null!==s?s.start*u:0,v=null!==s?s.count*u:1/0,y=Math.max(m,g),x=Math.min(p,m+f,g+v)-1,_=Math.max(0,x-y+1);if(0!==_){if(r.isMesh)!0===i.wireframe?(K.setLineWidth(i.wireframeLinewidth*J()),d.setMode(1)):d.setMode(4);else if(r.isLine){let t=i.linewidth;void 0===t&&(t=1),K.setLineWidth(t*J()),r.isLineSegments?d.setMode(1):r.isLineLoop?d.setMode(2):d.setMode(3)}else r.isPoints?d.setMode(0):r.isSprite&&d.setMode(4);if(r.isInstancedMesh)d.renderInstances(y,_,r.count);else if(n.isInstancedBufferGeometry){const t=Math.min(n.instanceCount,n._maxInstanceCount);d.renderInstances(y,_,t)}else d.render(y,_)}},this.compile=function(t,e){m=ct.get(t),m.init(),t.traverseVisible((function(t){t.isLight&&t.layers.test(e.layers)&&(m.pushLight(t),t.castShadow&&m.pushShadow(t))})),m.setupLights(),t.traverse((function(e){const n=e.material;if(n)if(Array.isArray(n))for(let i=0;i<n.length;i++){zt(n[i],t,e)}else zt(n,t,e)}))};let Lt=null;function Ct(){Dt.stop()}function Pt(){Dt.start()}const Dt=new oi;function It(t,e,n,i){if(!1===t.visible)return;if(t.layers.test(e.layers))if(t.isGroup)n=t.renderOrder;else if(t.isLOD)!0===t.autoUpdate&&t.update(e);else if(t.isLight)m.pushLight(t),t.castShadow&&m.pushShadow(t);else if(t.isSprite){if(!t.frustumCulled||G.intersectsSprite(t)){i&&q.setFromMatrixPosition(t.matrixWorld).applyMatrix4(j);const e=st.update(t),r=t.material;r.visible&&d.push(t,e,r,n,q.z,null)}}else if(t.isImmediateRenderObject)i&&q.setFromMatrixPosition(t.matrixWorld).applyMatrix4(j),d.push(t,null,t.material,n,q.z,null);else if((t.isMesh||t.isLine||t.isPoints)&&(t.isSkinnedMesh&&t.skeleton.frame!==$.render.frame&&(t.skeleton.update(),t.skeleton.frame=$.render.frame),!t.frustumCulled||G.intersectsObject(t))){i&&q.setFromMatrixPosition(t.matrixWorld).applyMatrix4(j);const e=st.update(t),r=t.material;if(Array.isArray(r)){const i=e.groups;for(let s=0,a=i.length;s<a;s++){const a=i[s],o=r[a.materialIndex];o&&o.visible&&d.push(t,e,o,n,q.z,a)}}else r.visible&&d.push(t,e,r,n,q.z,null)}const r=t.children;for(let t=0,s=r.length;t<s;t++)It(r[t],e,n,i)}function Nt(t,e,n){const i=!0===e.isScene?e.overrideMaterial:null;for(let r=0,s=t.length;r<s;r++){const s=t[r],a=s.object,o=s.geometry,l=null===i?s.material:i,c=s.group;if(n.isArrayCamera){const t=n.cameras;for(let n=0,i=t.length;n<i;n++){const i=t[n];a.layers.test(i.layers)&&(K.viewport(R.copy(i.viewport)),m.setupLightsView(i),Bt(a,e,i,o,l,c))}}else Bt(a,e,n,o,l,c)}}function Bt(t,e,n,i,r,s){if(t.onBeforeRender(v,e,n,i,r,s),t.modelViewMatrix.multiplyMatrices(n.matrixWorldInverse,t.matrixWorld),t.normalMatrix.getNormalMatrix(t.modelViewMatrix),t.isImmediateRenderObject){const i=Ot(n,e,r,t);K.setMaterial(r),vt.reset(),function(t,e){t.render((function(t){v.renderBufferImmediate(t,e)}))}(t,i)}else!0===r.transparent&&2===r.side?(r.side=1,r.needsUpdate=!0,v.renderBufferDirect(n,e,i,r,t,s),r.side=0,r.needsUpdate=!0,v.renderBufferDirect(n,e,i,r,t,s),r.side=2):v.renderBufferDirect(n,e,i,r,t,s);t.onAfterRender(v,e,n,i,r,s)}function zt(t,e,n){!0!==e.isScene&&(e=Y);const i=tt.get(t),r=m.state.lights,s=m.state.shadowsArray,a=r.state.version,o=at.getParameters(t,r.state,s,e,n),l=at.getProgramCacheKey(o);let c=i.programs;i.environment=t.isMeshStandardMaterial?e.environment:null,i.fog=e.fog,i.envMap=nt.get(t.envMap||i.environment),void 0===c&&(t.addEventListener("dispose",Et),c=new Map,i.programs=c);let h=c.get(l);if(void 0!==h){if(i.currentProgram===h&&i.lightsStateVersion===a)return Ft(t,o),h}else o.uniforms=at.getUniforms(t),t.onBuild(o,v),t.onBeforeCompile(o,v),h=at.acquireProgram(o,l),c.set(l,h),i.uniforms=o.uniforms;const u=i.uniforms;(t.isShaderMaterial||t.isRawShaderMaterial)&&!0!==t.clipping||(u.clippingPlanes=ht.uniform),Ft(t,o),i.needsLights=function(t){return t.isMeshLambertMaterial||t.isMeshToonMaterial||t.isMeshPhongMaterial||t.isMeshStandardMaterial||t.isShadowMaterial||t.isShaderMaterial&&!0===t.lights}(t),i.lightsStateVersion=a,i.needsLights&&(u.ambientLightColor.value=r.state.ambient,u.lightProbe.value=r.state.probe,u.directionalLights.value=r.state.directional,u.directionalLightShadows.value=r.state.directionalShadow,u.spotLights.value=r.state.spot,u.spotLightShadows.value=r.state.spotShadow,u.rectAreaLights.value=r.state.rectArea,u.ltc_1.value=r.state.rectAreaLTC1,u.ltc_2.value=r.state.rectAreaLTC2,u.pointLights.value=r.state.point,u.pointLightShadows.value=r.state.pointShadow,u.hemisphereLights.value=r.state.hemi,u.directionalShadowMap.value=r.state.directionalShadowMap,u.directionalShadowMatrix.value=r.state.directionalShadowMatrix,u.spotShadowMap.value=r.state.spotShadowMap,u.spotShadowMatrix.value=r.state.spotShadowMatrix,u.pointShadowMap.value=r.state.pointShadowMap,u.pointShadowMatrix.value=r.state.pointShadowMatrix);const d=h.getUniforms(),p=Cr.seqWithValue(d.seq,u);return i.currentProgram=h,i.uniformsList=p,h}function Ft(t,e){const n=tt.get(t);n.outputEncoding=e.outputEncoding,n.instancing=e.instancing,n.skinning=e.skinning,n.numClippingPlanes=e.numClippingPlanes,n.numIntersection=e.numClipIntersection,n.vertexAlphas=e.vertexAlphas}function Ot(t,e,n,i){!0!==e.isScene&&(e=Y),et.resetTextureUnits();const r=e.fog,s=n.isMeshStandardMaterial?e.environment:null,a=null===T?v.outputEncoding:T.texture.encoding,o=nt.get(n.envMap||s),l=!0===n.vertexColors&&i.geometry&&i.geometry.attributes.color&&4===i.geometry.attributes.color.itemSize,c=tt.get(n),h=m.state.lights;if(!0===k&&(!0===V||t!==L)){const e=t===L&&n.id===A;ht.setState(n,t,e)}let u=!1;n.version===c.__version?c.needsLights&&c.lightsStateVersion!==h.state.version||c.outputEncoding!==a||i.isInstancedMesh&&!1===c.instancing?u=!0:i.isInstancedMesh||!0!==c.instancing?i.isSkinnedMesh&&!1===c.skinning?u=!0:i.isSkinnedMesh||!0!==c.skinning?c.envMap!==o||n.fog&&c.fog!==r?u=!0:void 0===c.numClippingPlanes||c.numClippingPlanes===ht.numPlanes&&c.numIntersection===ht.numIntersection?c.vertexAlphas!==l&&(u=!0):u=!0:u=!0:u=!0:(u=!0,c.__version=n.version);let d=c.currentProgram;!0===u&&(d=zt(n,e,i));let p=!1,f=!1,g=!1;const y=d.getUniforms(),x=c.uniforms;if(K.useProgram(d.program)&&(p=!0,f=!0,g=!0),n.id!==A&&(A=n.id,f=!0),p||L!==t){if(y.setValue(yt,"projectionMatrix",t.projectionMatrix),Q.logarithmicDepthBuffer&&y.setValue(yt,"logDepthBufFC",2/(Math.log(t.far+1)/Math.LN2)),L!==t&&(L=t,f=!0,g=!0),n.isShaderMaterial||n.isMeshPhongMaterial||n.isMeshToonMaterial||n.isMeshStandardMaterial||n.envMap){const e=y.map.cameraPosition;void 0!==e&&e.setValue(yt,q.setFromMatrixPosition(t.matrixWorld))}(n.isMeshPhongMaterial||n.isMeshToonMaterial||n.isMeshLambertMaterial||n.isMeshBasicMaterial||n.isMeshStandardMaterial||n.isShaderMaterial)&&y.setValue(yt,"isOrthographic",!0===t.isOrthographicCamera),(n.isMeshPhongMaterial||n.isMeshToonMaterial||n.isMeshLambertMaterial||n.isMeshBasicMaterial||n.isMeshStandardMaterial||n.isShaderMaterial||n.isShadowMaterial||i.isSkinnedMesh)&&y.setValue(yt,"viewMatrix",t.matrixWorldInverse)}if(i.isSkinnedMesh){y.setOptional(yt,i,"bindMatrix"),y.setOptional(yt,i,"bindMatrixInverse");const t=i.skeleton;t&&(Q.floatVertexTextures?(null===t.boneTexture&&t.computeBoneTexture(),y.setValue(yt,"boneTexture",t.boneTexture,et),y.setValue(yt,"boneTextureSize",t.boneTextureSize)):y.setOptional(yt,t,"boneMatrices"))}var _,b;return(f||c.receiveShadow!==i.receiveShadow)&&(c.receiveShadow=i.receiveShadow,y.setValue(yt,"receiveShadow",i.receiveShadow)),f&&(y.setValue(yt,"toneMappingExposure",v.toneMappingExposure),c.needsLights&&(b=g,(_=x).ambientLightColor.needsUpdate=b,_.lightProbe.needsUpdate=b,_.directionalLights.needsUpdate=b,_.directionalLightShadows.needsUpdate=b,_.pointLights.needsUpdate=b,_.pointLightShadows.needsUpdate=b,_.spotLights.needsUpdate=b,_.spotLightShadows.needsUpdate=b,_.rectAreaLights.needsUpdate=b,_.hemisphereLights.needsUpdate=b),r&&n.fog&&ot.refreshFogUniforms(x,r),ot.refreshMaterialUniforms(x,n,N,I,W),Cr.upload(yt,c.uniformsList,x,et)),n.isShaderMaterial&&!0===n.uniformsNeedUpdate&&(Cr.upload(yt,c.uniformsList,x,et),n.uniformsNeedUpdate=!1),n.isSpriteMaterial&&y.setValue(yt,"center",i.center),y.setValue(yt,"modelViewMatrix",i.modelViewMatrix),y.setValue(yt,"normalMatrix",i.normalMatrix),y.setValue(yt,"modelMatrix",i.matrixWorld),d}Dt.setAnimationLoop((function(t){Lt&&Lt(t)})),"undefined"!=typeof window&&Dt.setContext(window),this.setAnimationLoop=function(t){Lt=t,bt.setAnimationLoop(t),null===t?Dt.stop():Dt.start()},bt.addEventListener("sessionstart",Ct),bt.addEventListener("sessionend",Pt),this.render=function(t,e){if(void 0!==e&&!0!==e.isCamera)return void console.error("THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.");if(!0===_)return;!0===t.autoUpdate&&t.updateMatrixWorld(),null===e.parent&&e.updateMatrixWorld(),!0===bt.enabled&&!0===bt.isPresenting&&(!0===bt.cameraAutoUpdate&&bt.updateCamera(e),e=bt.getCamera()),!0===t.isScene&&t.onBeforeRender(v,t,e,T),m=ct.get(t,g.length),m.init(),g.push(m),j.multiplyMatrices(e.projectionMatrix,e.matrixWorldInverse),G.setFromProjectionMatrix(j),V=this.localClippingEnabled,k=ht.init(this.clippingPlanes,V,e),d=lt.get(t,f.length),d.init(),f.push(d),It(t,e,0,v.sortObjects),d.finish(),!0===v.sortObjects&&d.sort(B,z),!0===k&&ht.beginShadows();const n=m.state.shadowsArray;ut.render(n,t,e),m.setupLights(),m.setupLightsView(e),!0===k&&ht.endShadows(),!0===this.info.autoReset&&this.info.reset(),dt.render(d,t);const i=d.opaque,r=d.transmissive,s=d.transparent;i.length>0&&Nt(i,t,e),r.length>0&&function(t,e,n,i){if(null===W){const t=!0===a&&!0===Q.isWebGL2;W=new(t?At:Tt)(1024,1024,{generateMipmaps:!0,type:null!==gt.convert(w)?w:x,minFilter:y,magFilter:p,wrapS:u,wrapT:u})}const r=v.getRenderTarget();v.setRenderTarget(W),v.clear();const s=v.toneMapping;v.toneMapping=0,Nt(t,n,i),v.toneMapping=s,et.updateMultisampleRenderTarget(W),et.updateRenderTargetMipmap(W),v.setRenderTarget(r),Nt(e,n,i)}(i,r,t,e),s.length>0&&Nt(s,t,e),null!==T&&(et.updateMultisampleRenderTarget(T),et.updateRenderTargetMipmap(T)),!0===t.isScene&&t.onAfterRender(v,t,e),K.buffers.depth.setTest(!0),K.buffers.depth.setMask(!0),K.buffers.color.setMask(!0),K.setPolygonOffset(!1),vt.resetDefaultState(),A=-1,L=null,g.pop(),m=g.length>0?g[g.length-1]:null,f.pop(),d=f.length>0?f[f.length-1]:null},this.getActiveCubeFace=function(){return b},this.getActiveMipmapLevel=function(){return S},this.getRenderTarget=function(){return T},this.setRenderTarget=function(t,e=0,n=0){T=t,b=e,S=n,t&&void 0===tt.get(t).__webglFramebuffer&&et.setupRenderTarget(t);let i=null,r=!1,s=!1;if(t){const n=t.texture;(n.isDataTexture3D||n.isDataTexture2DArray)&&(s=!0);const a=tt.get(t).__webglFramebuffer;t.isWebGLCubeRenderTarget?(i=a[e],r=!0):i=t.isWebGLMultisampleRenderTarget?tt.get(t).__webglMultisampledFramebuffer:a,R.copy(t.viewport),C.copy(t.scissor),P=t.scissorTest}else R.copy(F).multiplyScalar(N).floor(),C.copy(O).multiplyScalar(N).floor(),P=H;if(K.bindFramebuffer(36160,i)&&Q.drawBuffers){let e=!1;if(t)if(t.isWebGLMultipleRenderTargets){const n=t.texture;if(U.length!==n.length||36064!==U[0]){for(let t=0,e=n.length;t<e;t++)U[t]=36064+t;U.length=n.length,e=!0}}else 1===U.length&&36064===U[0]||(U[0]=36064,U.length=1,e=!0);else 1===U.length&&1029===U[0]||(U[0]=1029,U.length=1,e=!0);e&&(Q.isWebGL2?yt.drawBuffers(U):Z.get("WEBGL_draw_buffers").drawBuffersWEBGL(U))}if(K.viewport(R),K.scissor(C),K.setScissorTest(P),r){const i=tt.get(t.texture);yt.framebufferTexture2D(36160,36064,34069+e,i.__webglTexture,n)}else if(s){const i=tt.get(t.texture),r=e||0;yt.framebufferTextureLayer(36160,36064,i.__webglTexture,n||0,r)}},this.readRenderTargetPixels=function(t,e,n,i,r,s,a){if(!t||!t.isWebGLRenderTarget)return void console.error("THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.");let o=tt.get(t).__webglFramebuffer;if(t.isWebGLCubeRenderTarget&&void 0!==a&&(o=o[a]),o){K.bindFramebuffer(36160,o);try{const a=t.texture,o=a.format,l=a.type;if(o!==E&&gt.convert(o)!==yt.getParameter(35739))return void console.error("THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.");const c=l===w&&(Z.has("EXT_color_buffer_half_float")||Q.isWebGL2&&Z.has("EXT_color_buffer_float"));if(!(l===x||gt.convert(l)===yt.getParameter(35738)||l===M&&(Q.isWebGL2||Z.has("OES_texture_float")||Z.has("WEBGL_color_buffer_float"))||c))return void console.error("THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or 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Framebuffer not complete.")}finally{const t=null!==T?tt.get(T).__webglFramebuffer:null;K.bindFramebuffer(36160,t)}}},this.copyFramebufferToTexture=function(t,e,n=0){const i=Math.pow(2,-n),r=Math.floor(e.image.width*i),s=Math.floor(e.image.height*i);let a=gt.convert(e.format);Q.isWebGL2&&(6407===a&&(a=32849),6408===a&&(a=32856)),et.setTexture2D(e,0),yt.copyTexImage2D(3553,n,a,t.x,t.y,r,s,0),K.unbindTexture()},this.copyTextureToTexture=function(t,e,n,i=0){const r=e.image.width,s=e.image.height,a=gt.convert(n.format),o=gt.convert(n.type);et.setTexture2D(n,0),yt.pixelStorei(37440,n.flipY),yt.pixelStorei(37441,n.premultiplyAlpha),yt.pixelStorei(3317,n.unpackAlignment),e.isDataTexture?yt.texSubImage2D(3553,i,t.x,t.y,r,s,a,o,e.image.data):e.isCompressedTexture?yt.compressedTexSubImage2D(3553,i,t.x,t.y,e.mipmaps[0].width,e.mipmaps[0].height,a,e.mipmaps[0].data):yt.texSubImage2D(3553,i,t.x,t.y,a,o,e.image),0===i&&n.generateMipmaps&&yt.generateMipmap(3553),K.unbindTexture()},this.copyTextureToTexture3D=function(t,e,n,i,r=0){if(v.isWebGL1Renderer)return void console.warn("THREE.WebGLRenderer.copyTextureToTexture3D: can only be used with WebGL2.");const s=t.max.x-t.min.x+1,a=t.max.y-t.min.y+1,o=t.max.z-t.min.z+1,l=gt.convert(i.format),c=gt.convert(i.type);let h;if(i.isDataTexture3D)et.setTexture3D(i,0),h=32879;else{if(!i.isDataTexture2DArray)return void console.warn("THREE.WebGLRenderer.copyTextureToTexture3D: only supports THREE.DataTexture3D and THREE.DataTexture2DArray.");et.setTexture2DArray(i,0),h=35866}yt.pixelStorei(37440,i.flipY),yt.pixelStorei(37441,i.premultiplyAlpha),yt.pixelStorei(3317,i.unpackAlignment);const u=yt.getParameter(3314),d=yt.getParameter(32878),p=yt.getParameter(3316),m=yt.getParameter(3315),f=yt.getParameter(32877),g=n.isCompressedTexture?n.mipmaps[0]:n.image;yt.pixelStorei(3314,g.width),yt.pixelStorei(32878,g.height),yt.pixelStorei(3316,t.min.x),yt.pixelStorei(3315,t.min.y),yt.pixelStorei(32877,t.min.z),n.isDataTexture||n.isDataTexture3D?yt.texSubImage3D(h,r,e.x,e.y,e.z,s,a,o,l,c,g.data):n.isCompressedTexture?(console.warn("THREE.WebGLRenderer.copyTextureToTexture3D: untested support for compressed srcTexture."),yt.compressedTexSubImage3D(h,r,e.x,e.y,e.z,s,a,o,l,g.data)):yt.texSubImage3D(h,r,e.x,e.y,e.z,s,a,o,l,c,g),yt.pixelStorei(3314,u),yt.pixelStorei(32878,d),yt.pixelStorei(3316,p),yt.pixelStorei(3315,m),yt.pixelStorei(32877,f),0===r&&i.generateMipmaps&&yt.generateMipmap(h),K.unbindTexture()},this.initTexture=function(t){et.setTexture2D(t,0),K.unbindTexture()},this.resetState=function(){b=0,S=0,T=null,K.reset(),vt.reset()},"undefined"!=typeof __THREE_DEVTOOLS__&&__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent("observe",{detail:this}))}class Ms extends bs{}Ms.prototype.isWebGL1Renderer=!0;class ws{constructor(t,e=25e-5){this.name="",this.color=new Qe(t),this.density=e}clone(){return new ws(this.color,this.density)}toJSON(){return{type:"FogExp2",color:this.color.getHex(),density:this.density}}}ws.prototype.isFogExp2=!0;class Ss{constructor(t,e=1,n=1e3){this.name="",this.color=new Qe(t),this.near=e,this.far=n}clone(){return new Ss(this.color,this.near,this.far)}toJSON(){return{type:"Fog",color:this.color.getHex(),near:this.near,far:this.far}}}Ss.prototype.isFog=!0;class Ts extends Pe{constructor(){super(),this.type="Scene",this.background=null,this.environment=null,this.fog=null,this.overrideMaterial=null,this.autoUpdate=!0,"undefined"!=typeof __THREE_DEVTOOLS__&&__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent("observe",{detail:this}))}copy(t,e){return super.copy(t,e),null!==t.background&&(this.background=t.background.clone()),null!==t.environment&&(this.environment=t.environment.clone()),null!==t.fog&&(this.fog=t.fog.clone()),null!==t.overrideMaterial&&(this.overrideMaterial=t.overrideMaterial.clone()),this.autoUpdate=t.autoUpdate,this.matrixAutoUpdate=t.matrixAutoUpdate,this}toJSON(t){const e=super.toJSON(t);return null!==this.fog&&(e.object.fog=this.fog.toJSON()),e}}Ts.prototype.isScene=!0;class Es{constructor(t,e){this.array=t,this.stride=e,this.count=void 0!==t?t.length/e:0,this.usage=et,this.updateRange={offset:0,count:-1},this.version=0,this.uuid=ct()}onUploadCallback(){}set needsUpdate(t){!0===t&&this.version++}setUsage(t){return this.usage=t,this}copy(t){return this.array=new t.array.constructor(t.array),this.count=t.count,this.stride=t.stride,this.usage=t.usage,this}copyAt(t,e,n){t*=this.stride,n*=e.stride;for(let i=0,r=this.stride;i<r;i++)this.array[t+i]=e.array[n+i];return this}set(t,e=0){return this.array.set(t,e),this}clone(t){void 0===t.arrayBuffers&&(t.arrayBuffers={}),void 0===this.array.buffer._uuid&&(this.array.buffer._uuid=ct()),void 0===t.arrayBuffers[this.array.buffer._uuid]&&(t.arrayBuffers[this.array.buffer._uuid]=this.array.slice(0).buffer);const e=new this.array.constructor(t.arrayBuffers[this.array.buffer._uuid]),n=new this.constructor(e,this.stride);return n.setUsage(this.usage),n}onUpload(t){return this.onUploadCallback=t,this}toJSON(t){return void 0===t.arrayBuffers&&(t.arrayBuffers={}),void 0===this.array.buffer._uuid&&(this.array.buffer._uuid=ct()),void 0===t.arrayBuffers[this.array.buffer._uuid]&&(t.arrayBuffers[this.array.buffer._uuid]=Array.prototype.slice.call(new Uint32Array(this.array.buffer))),{uuid:this.uuid,buffer:this.array.buffer._uuid,type:this.array.constructor.name,stride:this.stride}}}Es.prototype.isInterleavedBuffer=!0;const As=new Rt;class Ls{constructor(t,e,n,i=!1){this.name="",this.data=t,this.itemSize=e,this.offset=n,this.normalized=!0===i}get count(){return this.data.count}get array(){return this.data.array}set needsUpdate(t){this.data.needsUpdate=t}applyMatrix4(t){for(let e=0,n=this.data.count;e<n;e++)As.x=this.getX(e),As.y=this.getY(e),As.z=this.getZ(e),As.applyMatrix4(t),this.setXYZ(e,As.x,As.y,As.z);return this}applyNormalMatrix(t){for(let e=0,n=this.count;e<n;e++)As.x=this.getX(e),As.y=this.getY(e),As.z=this.getZ(e),As.applyNormalMatrix(t),this.setXYZ(e,As.x,As.y,As.z);return this}transformDirection(t){for(let e=0,n=this.count;e<n;e++)As.x=this.getX(e),As.y=this.getY(e),As.z=this.getZ(e),As.transformDirection(t),this.setXYZ(e,As.x,As.y,As.z);return this}setX(t,e){return this.data.array[t*this.data.stride+this.offset]=e,this}setY(t,e){return this.data.array[t*this.data.stride+this.offset+1]=e,this}setZ(t,e){return this.data.array[t*this.data.stride+this.offset+2]=e,this}setW(t,e){return this.data.array[t*this.data.stride+this.offset+3]=e,this}getX(t){return this.data.array[t*this.data.stride+this.offset]}getY(t){return this.data.array[t*this.data.stride+this.offset+1]}getZ(t){return this.data.array[t*this.data.stride+this.offset+2]}getW(t){return this.data.array[t*this.data.stride+this.offset+3]}setXY(t,e,n){return t=t*this.data.stride+this.offset,this.data.array[t+0]=e,this.data.array[t+1]=n,this}setXYZ(t,e,n,i){return t=t*this.data.stride+this.offset,this.data.array[t+0]=e,this.data.array[t+1]=n,this.data.array[t+2]=i,this}setXYZW(t,e,n,i,r){return t=t*this.data.stride+this.offset,this.data.array[t+0]=e,this.data.array[t+1]=n,this.data.array[t+2]=i,this.data.array[t+3]=r,this}clone(t){if(void 0===t){console.log("THREE.InterleavedBufferAttribute.clone(): Cloning an interlaved buffer attribute will deinterleave buffer data.");const t=[];for(let e=0;e<this.count;e++){const n=e*this.data.stride+this.offset;for(let e=0;e<this.itemSize;e++)t.push(this.data.array[n+e])}return new en(new this.array.constructor(t),this.itemSize,this.normalized)}return void 0===t.interleavedBuffers&&(t.interleavedBuffers={}),void 0===t.interleavedBuffers[this.data.uuid]&&(t.interleavedBuffers[this.data.uuid]=this.data.clone(t)),new Ls(t.interleavedBuffers[this.data.uuid],this.itemSize,this.offset,this.normalized)}toJSON(t){if(void 0===t){console.log("THREE.InterleavedBufferAttribute.toJSON(): Serializing an interlaved buffer attribute will deinterleave buffer data.");const t=[];for(let e=0;e<this.count;e++){const n=e*this.data.stride+this.offset;for(let e=0;e<this.itemSize;e++)t.push(this.data.array[n+e])}return{itemSize:this.itemSize,type:this.array.constructor.name,array:t,normalized:this.normalized}}return void 0===t.interleavedBuffers&&(t.interleavedBuffers={}),void 0===t.interleavedBuffers[this.data.uuid]&&(t.interleavedBuffers[this.data.uuid]=this.data.toJSON(t)),{isInterleavedBufferAttribute:!0,itemSize:this.itemSize,data:this.data.uuid,offset:this.offset,normalized:this.normalized}}}Ls.prototype.isInterleavedBufferAttribute=!0;class Rs extends We{constructor(t){super(),this.type="SpriteMaterial",this.color=new Qe(16777215),this.map=null,this.alphaMap=null,this.rotation=0,this.sizeAttenuation=!0,this.transparent=!0,this.setValues(t)}copy(t){return super.copy(t),this.color.copy(t.color),this.map=t.map,this.alphaMap=t.alphaMap,this.rotation=t.rotation,this.sizeAttenuation=t.sizeAttenuation,this}}let Cs;Rs.prototype.isSpriteMaterial=!0;const Ps=new Rt,Ds=new Rt,Is=new Rt,Ns=new vt,Bs=new vt,zs=new ae,Fs=new Rt,Os=new Rt,Hs=new Rt,Us=new vt,Gs=new vt,ks=new vt;class Vs extends Pe{constructor(t){if(super(),this.type="Sprite",void 0===Cs){Cs=new wn;const t=new Float32Array([-.5,-.5,0,0,0,.5,-.5,0,1,0,.5,.5,0,1,1,-.5,.5,0,0,1]),e=new Es(t,5);Cs.setIndex([0,1,2,0,2,3]),Cs.setAttribute("position",new Ls(e,3,0,!1)),Cs.setAttribute("uv",new Ls(e,2,3,!1))}this.geometry=Cs,this.material=void 0!==t?t:new Rs,this.center=new vt(.5,.5)}raycast(t,e){null===t.camera&&console.error('THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.'),Ds.setFromMatrixScale(this.matrixWorld),zs.copy(t.camera.matrixWorld),this.modelViewMatrix.multiplyMatrices(t.camera.matrixWorldInverse,this.matrixWorld),Is.setFromMatrixPosition(this.modelViewMatrix),t.camera.isPerspectiveCamera&&!1===this.material.sizeAttenuation&&Ds.multiplyScalar(-Is.z);const n=this.material.rotation;let i,r;0!==n&&(r=Math.cos(n),i=Math.sin(n));const s=this.center;Ws(Fs.set(-.5,-.5,0),Is,s,Ds,i,r),Ws(Os.set(.5,-.5,0),Is,s,Ds,i,r),Ws(Hs.set(.5,.5,0),Is,s,Ds,i,r),Us.set(0,0),Gs.set(1,0),ks.set(1,1);let a=t.ray.intersectTriangle(Fs,Os,Hs,!1,Ps);if(null===a&&(Ws(Os.set(-.5,.5,0),Is,s,Ds,i,r),Gs.set(0,1),a=t.ray.intersectTriangle(Fs,Hs,Os,!1,Ps),null===a))return;const o=t.ray.origin.distanceTo(Ps);o<t.near||o>t.far||e.push({distance:o,point:Ps.clone(),uv:ke.getUV(Ps,Fs,Os,Hs,Us,Gs,ks,new vt),face:null,object:this})}copy(t){return super.copy(t),void 0!==t.center&&this.center.copy(t.center),this.material=t.material,this}}function Ws(t,e,n,i,r,s){Ns.subVectors(t,n).addScalar(.5).multiply(i),void 0!==r?(Bs.x=s*Ns.x-r*Ns.y,Bs.y=r*Ns.x+s*Ns.y):Bs.copy(Ns),t.copy(e),t.x+=Bs.x,t.y+=Bs.y,t.applyMatrix4(zs)}Vs.prototype.isSprite=!0;const js=new Rt,qs=new Rt;class Xs extends Pe{constructor(){super(),this._currentLevel=0,this.type="LOD",Object.defineProperties(this,{levels:{enumerable:!0,value:[]},isLOD:{value:!0}}),this.autoUpdate=!0}copy(t){super.copy(t,!1);const e=t.levels;for(let t=0,n=e.length;t<n;t++){const n=e[t];this.addLevel(n.object.clone(),n.distance)}return this.autoUpdate=t.autoUpdate,this}addLevel(t,e=0){e=Math.abs(e);const n=this.levels;let i;for(i=0;i<n.length&&!(e<n[i].distance);i++);return n.splice(i,0,{distance:e,object:t}),this.add(t),this}getCurrentLevel(){return this._currentLevel}getObjectForDistance(t){const e=this.levels;if(e.length>0){let n,i;for(n=1,i=e.length;n<i&&!(t<e[n].distance);n++);return e[n-1].object}return null}raycast(t,e){if(this.levels.length>0){js.setFromMatrixPosition(this.matrixWorld);const n=t.ray.origin.distanceTo(js);this.getObjectForDistance(n).raycast(t,e)}}update(t){const e=this.levels;if(e.length>1){js.setFromMatrixPosition(t.matrixWorld),qs.setFromMatrixPosition(this.matrixWorld);const n=js.distanceTo(qs)/t.zoom;let i,r;for(e[0].object.visible=!0,i=1,r=e.length;i<r&&n>=e[i].distance;i++)e[i-1].object.visible=!1,e[i].object.visible=!0;for(this._currentLevel=i-1;i<r;i++)e[i].object.visible=!1}}toJSON(t){const e=super.toJSON(t);!1===this.autoUpdate&&(e.object.autoUpdate=!1),e.object.levels=[];const n=this.levels;for(let t=0,i=n.length;t<i;t++){const i=n[t];e.object.levels.push({object:i.object.uuid,distance:i.distance})}return e}}const Ys=new Rt,Js=new St,Zs=new St,Qs=new Rt,Ks=new ae;class $s extends Gn{constructor(t,e){super(t,e),this.type="SkinnedMesh",this.bindMode="attached",this.bindMatrix=new ae,this.bindMatrixInverse=new ae}copy(t){return super.copy(t),this.bindMode=t.bindMode,this.bindMatrix.copy(t.bindMatrix),this.bindMatrixInverse.copy(t.bindMatrixInverse),this.skeleton=t.skeleton,this}bind(t,e){this.skeleton=t,void 0===e&&(this.updateMatrixWorld(!0),this.skeleton.calculateInverses(),e=this.matrixWorld),this.bindMatrix.copy(e),this.bindMatrixInverse.copy(e).invert()}pose(){this.skeleton.pose()}normalizeSkinWeights(){const t=new St,e=this.geometry.attributes.skinWeight;for(let n=0,i=e.count;n<i;n++){t.x=e.getX(n),t.y=e.getY(n),t.z=e.getZ(n),t.w=e.getW(n);const i=1/t.manhattanLength();i!==1/0?t.multiplyScalar(i):t.set(1,0,0,0),e.setXYZW(n,t.x,t.y,t.z,t.w)}}updateMatrixWorld(t){super.updateMatrixWorld(t),"attached"===this.bindMode?this.bindMatrixInverse.copy(this.matrixWorld).invert():"detached"===this.bindMode?this.bindMatrixInverse.copy(this.bindMatrix).invert():console.warn("THREE.SkinnedMesh: Unrecognized bindMode: "+this.bindMode)}boneTransform(t,e){const n=this.skeleton,i=this.geometry;Js.fromBufferAttribute(i.attributes.skinIndex,t),Zs.fromBufferAttribute(i.attributes.skinWeight,t),Ys.fromBufferAttribute(i.attributes.position,t).applyMatrix4(this.bindMatrix),e.set(0,0,0);for(let t=0;t<4;t++){const i=Zs.getComponent(t);if(0!==i){const r=Js.getComponent(t);Ks.multiplyMatrices(n.bones[r].matrixWorld,n.boneInverses[r]),e.addScaledVector(Qs.copy(Ys).applyMatrix4(Ks),i)}}return e.applyMatrix4(this.bindMatrixInverse)}}$s.prototype.isSkinnedMesh=!0;class ta extends Pe{constructor(){super(),this.type="Bone"}}ta.prototype.isBone=!0;class ea extends Mt{constructor(t=null,e=1,n=1,i,r,s,a,o,l=1003,c=1003,h,u){super(null,s,a,o,l,c,i,r,h,u),this.image={data:t,width:e,height:n},this.magFilter=l,this.minFilter=c,this.generateMipmaps=!1,this.flipY=!1,this.unpackAlignment=1,this.needsUpdate=!0}}ea.prototype.isDataTexture=!0;const na=new ae,ia=new ae;class ra{constructor(t=[],e=[]){this.uuid=ct(),this.bones=t.slice(0),this.boneInverses=e,this.boneMatrices=null,this.boneTexture=null,this.boneTextureSize=0,this.frame=-1,this.init()}init(){const t=this.bones,e=this.boneInverses;if(this.boneMatrices=new Float32Array(16*t.length),0===e.length)this.calculateInverses();else if(t.length!==e.length){console.warn("THREE.Skeleton: Number of inverse bone matrices does not match amount of bones."),this.boneInverses=[];for(let t=0,e=this.bones.length;t<e;t++)this.boneInverses.push(new ae)}}calculateInverses(){this.boneInverses.length=0;for(let t=0,e=this.bones.length;t<e;t++){const e=new ae;this.bones[t]&&e.copy(this.bones[t].matrixWorld).invert(),this.boneInverses.push(e)}}pose(){for(let t=0,e=this.bones.length;t<e;t++){const e=this.bones[t];e&&e.matrixWorld.copy(this.boneInverses[t]).invert()}for(let t=0,e=this.bones.length;t<e;t++){const e=this.bones[t];e&&(e.parent&&e.parent.isBone?(e.matrix.copy(e.parent.matrixWorld).invert(),e.matrix.multiply(e.matrixWorld)):e.matrix.copy(e.matrixWorld),e.matrix.decompose(e.position,e.quaternion,e.scale))}}update(){const t=this.bones,e=this.boneInverses,n=this.boneMatrices,i=this.boneTexture;for(let i=0,r=t.length;i<r;i++){const r=t[i]?t[i].matrixWorld:ia;na.multiplyMatrices(r,e[i]),na.toArray(n,16*i)}null!==i&&(i.needsUpdate=!0)}clone(){return new ra(this.bones,this.boneInverses)}computeBoneTexture(){let t=Math.sqrt(4*this.bones.length);t=mt(t),t=Math.max(t,4);const e=new Float32Array(t*t*4);e.set(this.boneMatrices);const n=new ea(e,t,t,E,M);return this.boneMatrices=e,this.boneTexture=n,this.boneTextureSize=t,this}getBoneByName(t){for(let e=0,n=this.bones.length;e<n;e++){const n=this.bones[e];if(n.name===t)return n}}dispose(){null!==this.boneTexture&&(this.boneTexture.dispose(),this.boneTexture=null)}fromJSON(t,e){this.uuid=t.uuid;for(let n=0,i=t.bones.length;n<i;n++){const i=t.bones[n];let r=e[i];void 0===r&&(console.warn("THREE.Skeleton: No bone found with UUID:",i),r=new ta),this.bones.push(r),this.boneInverses.push((new ae).fromArray(t.boneInverses[n]))}return this.init(),this}toJSON(){const t={metadata:{version:4.5,type:"Skeleton",generator:"Skeleton.toJSON"},bones:[],boneInverses:[]};t.uuid=this.uuid;const e=this.bones,n=this.boneInverses;for(let i=0,r=e.length;i<r;i++){const r=e[i];t.bones.push(r.uuid);const s=n[i];t.boneInverses.push(s.toArray())}return t}}const sa=new ae,aa=new ae,oa=[],la=new Gn;class ca extends Gn{constructor(t,e,n){super(t,e),this.instanceMatrix=new en(new Float32Array(16*n),16),this.instanceColor=null,this.count=n,this.frustumCulled=!1}copy(t){return super.copy(t),this.instanceMatrix.copy(t.instanceMatrix),null!==t.instanceColor&&(this.instanceColor=t.instanceColor.clone()),this.count=t.count,this}getColorAt(t,e){e.fromArray(this.instanceColor.array,3*t)}getMatrixAt(t,e){e.fromArray(this.instanceMatrix.array,16*t)}raycast(t,e){const n=this.matrixWorld,i=this.count;if(la.geometry=this.geometry,la.material=this.material,void 0!==la.material)for(let r=0;r<i;r++){this.getMatrixAt(r,sa),aa.multiplyMatrices(n,sa),la.matrixWorld=aa,la.raycast(t,oa);for(let t=0,n=oa.length;t<n;t++){const n=oa[t];n.instanceId=r,n.object=this,e.push(n)}oa.length=0}}setColorAt(t,e){null===this.instanceColor&&(this.instanceColor=new en(new Float32Array(3*this.count),3)),e.toArray(this.instanceColor.array,3*t)}setMatrixAt(t,e){e.toArray(this.instanceMatrix.array,16*t)}updateMorphTargets(){}dispose(){this.dispatchEvent({type:"dispose"})}}ca.prototype.isInstancedMesh=!0;class ha extends We{constructor(t){super(),this.type="LineBasicMaterial",this.color=new Qe(16777215),this.linewidth=1,this.linecap="round",this.linejoin="round",this.morphTargets=!1,this.setValues(t)}copy(t){return super.copy(t),this.color.copy(t.color),this.linewidth=t.linewidth,this.linecap=t.linecap,this.linejoin=t.linejoin,this.morphTargets=t.morphTargets,this}}ha.prototype.isLineBasicMaterial=!0;const ua=new Rt,da=new Rt,pa=new ae,ma=new se,fa=new Qt;class ga extends Pe{constructor(t=new wn,e=new ha){super(),this.type="Line",this.geometry=t,this.material=e,this.updateMorphTargets()}copy(t){return super.copy(t),this.material=t.material,this.geometry=t.geometry,this}computeLineDistances(){const t=this.geometry;if(t.isBufferGeometry)if(null===t.index){const e=t.attributes.position,n=[0];for(let t=1,i=e.count;t<i;t++)ua.fromBufferAttribute(e,t-1),da.fromBufferAttribute(e,t),n[t]=n[t-1],n[t]+=ua.distanceTo(da);t.setAttribute("lineDistance",new un(n,1))}else console.warn("THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.");else t.isGeometry&&console.error("THREE.Line.computeLineDistances() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.");return this}raycast(t,e){const n=this.geometry,i=this.matrixWorld,r=t.params.Line.threshold,s=n.drawRange;if(null===n.boundingSphere&&n.computeBoundingSphere(),fa.copy(n.boundingSphere),fa.applyMatrix4(i),fa.radius+=r,!1===t.ray.intersectsSphere(fa))return;pa.copy(i).invert(),ma.copy(t.ray).applyMatrix4(pa);const a=r/((this.scale.x+this.scale.y+this.scale.z)/3),o=a*a,l=new Rt,c=new Rt,h=new Rt,u=new Rt,d=this.isLineSegments?2:1;if(n.isBufferGeometry){const i=n.index,r=n.attributes.position;if(null!==i){for(let n=Math.max(0,s.start),a=Math.min(i.count,s.start+s.count)-1;n<a;n+=d){const s=i.getX(n),a=i.getX(n+1);l.fromBufferAttribute(r,s),c.fromBufferAttribute(r,a);if(ma.distanceSqToSegment(l,c,u,h)>o)continue;u.applyMatrix4(this.matrixWorld);const d=t.ray.origin.distanceTo(u);d<t.near||d>t.far||e.push({distance:d,point:h.clone().applyMatrix4(this.matrixWorld),index:n,face:null,faceIndex:null,object:this})}}else{for(let n=Math.max(0,s.start),i=Math.min(r.count,s.start+s.count)-1;n<i;n+=d){l.fromBufferAttribute(r,n),c.fromBufferAttribute(r,n+1);if(ma.distanceSqToSegment(l,c,u,h)>o)continue;u.applyMatrix4(this.matrixWorld);const i=t.ray.origin.distanceTo(u);i<t.near||i>t.far||e.push({distance:i,point:h.clone().applyMatrix4(this.matrixWorld),index:n,face:null,faceIndex:null,object:this})}}}else n.isGeometry&&console.error("THREE.Line.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.")}updateMorphTargets(){const t=this.geometry;if(t.isBufferGeometry){const e=t.morphAttributes,n=Object.keys(e);if(n.length>0){const t=e[n[0]];if(void 0!==t){this.morphTargetInfluences=[],this.morphTargetDictionary={};for(let e=0,n=t.length;e<n;e++){const n=t[e].name||String(e);this.morphTargetInfluences.push(0),this.morphTargetDictionary[n]=e}}}}else{const e=t.morphTargets;void 0!==e&&e.length>0&&console.error("THREE.Line.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.")}}}ga.prototype.isLine=!0;const va=new Rt,ya=new Rt;class xa extends ga{constructor(t,e){super(t,e),this.type="LineSegments"}computeLineDistances(){const t=this.geometry;if(t.isBufferGeometry)if(null===t.index){const e=t.attributes.position,n=[];for(let t=0,i=e.count;t<i;t+=2)va.fromBufferAttribute(e,t),ya.fromBufferAttribute(e,t+1),n[t]=0===t?0:n[t-1],n[t+1]=n[t]+va.distanceTo(ya);t.setAttribute("lineDistance",new un(n,1))}else console.warn("THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.");else t.isGeometry&&console.error("THREE.LineSegments.computeLineDistances() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.");return this}}xa.prototype.isLineSegments=!0;class _a extends ga{constructor(t,e){super(t,e),this.type="LineLoop"}}_a.prototype.isLineLoop=!0;class ba extends We{constructor(t){super(),this.type="PointsMaterial",this.color=new Qe(16777215),this.map=null,this.alphaMap=null,this.size=1,this.sizeAttenuation=!0,this.morphTargets=!1,this.setValues(t)}copy(t){return super.copy(t),this.color.copy(t.color),this.map=t.map,this.alphaMap=t.alphaMap,this.size=t.size,this.sizeAttenuation=t.sizeAttenuation,this.morphTargets=t.morphTargets,this}}ba.prototype.isPointsMaterial=!0;const Ma=new ae,wa=new se,Sa=new Qt,Ta=new Rt;class Ea extends Pe{constructor(t=new wn,e=new ba){super(),this.type="Points",this.geometry=t,this.material=e,this.updateMorphTargets()}copy(t){return super.copy(t),this.material=t.material,this.geometry=t.geometry,this}raycast(t,e){const n=this.geometry,i=this.matrixWorld,r=t.params.Points.threshold,s=n.drawRange;if(null===n.boundingSphere&&n.computeBoundingSphere(),Sa.copy(n.boundingSphere),Sa.applyMatrix4(i),Sa.radius+=r,!1===t.ray.intersectsSphere(Sa))return;Ma.copy(i).invert(),wa.copy(t.ray).applyMatrix4(Ma);const a=r/((this.scale.x+this.scale.y+this.scale.z)/3),o=a*a;if(n.isBufferGeometry){const r=n.index,a=n.attributes.position;if(null!==r){for(let n=Math.max(0,s.start),l=Math.min(r.count,s.start+s.count);n<l;n++){const s=r.getX(n);Ta.fromBufferAttribute(a,s),Aa(Ta,s,o,i,t,e,this)}}else{for(let n=Math.max(0,s.start),r=Math.min(a.count,s.start+s.count);n<r;n++)Ta.fromBufferAttribute(a,n),Aa(Ta,n,o,i,t,e,this)}}else console.error("THREE.Points.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.")}updateMorphTargets(){const t=this.geometry;if(t.isBufferGeometry){const e=t.morphAttributes,n=Object.keys(e);if(n.length>0){const t=e[n[0]];if(void 0!==t){this.morphTargetInfluences=[],this.morphTargetDictionary={};for(let e=0,n=t.length;e<n;e++){const n=t[e].name||String(e);this.morphTargetInfluences.push(0),this.morphTargetDictionary[n]=e}}}}else{const e=t.morphTargets;void 0!==e&&e.length>0&&console.error("THREE.Points.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.")}}}function Aa(t,e,n,i,r,s,a){const o=wa.distanceSqToPoint(t);if(o<n){const n=new Rt;wa.closestPointToPoint(t,n),n.applyMatrix4(i);const l=r.ray.origin.distanceTo(n);if(l<r.near||l>r.far)return;s.push({distance:l,distanceToRay:Math.sqrt(o),point:n,index:e,face:null,object:a})}}Ea.prototype.isPoints=!0;class La extends Mt{constructor(t,e,n,i,r,s,a,o,l){super(t,e,n,i,r,s,a,o,l),this.format=void 0!==a?a:T,this.minFilter=void 0!==s?s:g,this.magFilter=void 0!==r?r:g,this.generateMipmaps=!1;const c=this;"requestVideoFrameCallback"in t&&t.requestVideoFrameCallback((function e(){c.needsUpdate=!0,t.requestVideoFrameCallback(e)}))}clone(){return new this.constructor(this.image).copy(this)}update(){const t=this.image;!1==="requestVideoFrameCallback"in t&&t.readyState>=t.HAVE_CURRENT_DATA&&(this.needsUpdate=!0)}}La.prototype.isVideoTexture=!0;class Ra extends Mt{constructor(t,e,n,i,r,s,a,o,l,c,h,u){super(null,s,a,o,l,c,i,r,h,u),this.image={width:e,height:n},this.mipmaps=t,this.flipY=!1,this.generateMipmaps=!1}}Ra.prototype.isCompressedTexture=!0;class Ca extends Mt{constructor(t,e,n,i,r,s,a,o,l){super(t,e,n,i,r,s,a,o,l),this.needsUpdate=!0}}Ca.prototype.isCanvasTexture=!0;class Pa extends Mt{constructor(t,e,n,i,r,s,a,o,l,c){if((c=void 0!==c?c:A)!==A&&c!==L)throw new Error("DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat");void 0===n&&c===A&&(n=_),void 0===n&&c===L&&(n=S),super(null,i,r,s,a,o,c,n,l),this.image={width:t,height:e},this.magFilter=void 0!==a?a:p,this.minFilter=void 0!==o?o:p,this.flipY=!1,this.generateMipmaps=!1}}Pa.prototype.isDepthTexture=!0;class Da extends wn{constructor(t=1,e=8,n=0,i=2*Math.PI){super(),this.type="CircleGeometry",this.parameters={radius:t,segments:e,thetaStart:n,thetaLength:i},e=Math.max(3,e);const r=[],s=[],a=[],o=[],l=new Rt,c=new vt;s.push(0,0,0),a.push(0,0,1),o.push(.5,.5);for(let r=0,h=3;r<=e;r++,h+=3){const u=n+r/e*i;l.x=t*Math.cos(u),l.y=t*Math.sin(u),s.push(l.x,l.y,l.z),a.push(0,0,1),c.x=(s[h]/t+1)/2,c.y=(s[h+1]/t+1)/2,o.push(c.x,c.y)}for(let t=1;t<=e;t++)r.push(t,t+1,0);this.setIndex(r),this.setAttribute("position",new un(s,3)),this.setAttribute("normal",new un(a,3)),this.setAttribute("uv",new un(o,2))}static fromJSON(t){return new Da(t.radius,t.segments,t.thetaStart,t.thetaLength)}}class Ia extends wn{constructor(t=1,e=1,n=1,i=8,r=1,s=!1,a=0,o=2*Math.PI){super(),this.type="CylinderGeometry",this.parameters={radiusTop:t,radiusBottom:e,height:n,radialSegments:i,heightSegments:r,openEnded:s,thetaStart:a,thetaLength:o};const l=this;i=Math.floor(i),r=Math.floor(r);const c=[],h=[],u=[],d=[];let p=0;const m=[],f=n/2;let g=0;function v(n){const r=p,s=new vt,m=new Rt;let v=0;const y=!0===n?t:e,x=!0===n?1:-1;for(let t=1;t<=i;t++)h.push(0,f*x,0),u.push(0,x,0),d.push(.5,.5),p++;const _=p;for(let t=0;t<=i;t++){const e=t/i*o+a,n=Math.cos(e),r=Math.sin(e);m.x=y*r,m.y=f*x,m.z=y*n,h.push(m.x,m.y,m.z),u.push(0,x,0),s.x=.5*n+.5,s.y=.5*r*x+.5,d.push(s.x,s.y),p++}for(let t=0;t<i;t++){const e=r+t,i=_+t;!0===n?c.push(i,i+1,e):c.push(i+1,i,e),v+=3}l.addGroup(g,v,!0===n?1:2),g+=v}!function(){const s=new Rt,v=new Rt;let y=0;const x=(e-t)/n;for(let l=0;l<=r;l++){const c=[],g=l/r,y=g*(e-t)+t;for(let t=0;t<=i;t++){const e=t/i,r=e*o+a,l=Math.sin(r),m=Math.cos(r);v.x=y*l,v.y=-g*n+f,v.z=y*m,h.push(v.x,v.y,v.z),s.set(l,x,m).normalize(),u.push(s.x,s.y,s.z),d.push(e,1-g),c.push(p++)}m.push(c)}for(let t=0;t<i;t++)for(let e=0;e<r;e++){const n=m[e][t],i=m[e+1][t],r=m[e+1][t+1],s=m[e][t+1];c.push(n,i,s),c.push(i,r,s),y+=6}l.addGroup(g,y,0),g+=y}(),!1===s&&(t>0&&v(!0),e>0&&v(!1)),this.setIndex(c),this.setAttribute("position",new un(h,3)),this.setAttribute("normal",new un(u,3)),this.setAttribute("uv",new un(d,2))}static fromJSON(t){return new Ia(t.radiusTop,t.radiusBottom,t.height,t.radialSegments,t.heightSegments,t.openEnded,t.thetaStart,t.thetaLength)}}class Na extends Ia{constructor(t=1,e=1,n=8,i=1,r=!1,s=0,a=2*Math.PI){super(0,t,e,n,i,r,s,a),this.type="ConeGeometry",this.parameters={radius:t,height:e,radialSegments:n,heightSegments:i,openEnded:r,thetaStart:s,thetaLength:a}}static fromJSON(t){return new Na(t.radius,t.height,t.radialSegments,t.heightSegments,t.openEnded,t.thetaStart,t.thetaLength)}}class Ba extends wn{constructor(t,e,n=1,i=0){super(),this.type="PolyhedronGeometry",this.parameters={vertices:t,indices:e,radius:n,detail:i};const r=[],s=[];function a(t,e,n,i){const r=i+1,s=[];for(let i=0;i<=r;i++){s[i]=[];const a=t.clone().lerp(n,i/r),o=e.clone().lerp(n,i/r),l=r-i;for(let t=0;t<=l;t++)s[i][t]=0===t&&i===r?a:a.clone().lerp(o,t/l)}for(let t=0;t<r;t++)for(let e=0;e<2*(r-t)-1;e++){const n=Math.floor(e/2);e%2==0?(o(s[t][n+1]),o(s[t+1][n]),o(s[t][n])):(o(s[t][n+1]),o(s[t+1][n+1]),o(s[t+1][n]))}}function o(t){r.push(t.x,t.y,t.z)}function l(e,n){const i=3*e;n.x=t[i+0],n.y=t[i+1],n.z=t[i+2]}function c(t,e,n,i){i<0&&1===t.x&&(s[e]=t.x-1),0===n.x&&0===n.z&&(s[e]=i/2/Math.PI+.5)}function h(t){return Math.atan2(t.z,-t.x)}!function(t){const n=new Rt,i=new Rt,r=new Rt;for(let s=0;s<e.length;s+=3)l(e[s+0],n),l(e[s+1],i),l(e[s+2],r),a(n,i,r,t)}(i),function(t){const e=new Rt;for(let n=0;n<r.length;n+=3)e.x=r[n+0],e.y=r[n+1],e.z=r[n+2],e.normalize().multiplyScalar(t),r[n+0]=e.x,r[n+1]=e.y,r[n+2]=e.z}(n),function(){const t=new Rt;for(let n=0;n<r.length;n+=3){t.x=r[n+0],t.y=r[n+1],t.z=r[n+2];const i=h(t)/2/Math.PI+.5,a=(e=t,Math.atan2(-e.y,Math.sqrt(e.x*e.x+e.z*e.z))/Math.PI+.5);s.push(i,1-a)}var e;(function(){const t=new Rt,e=new Rt,n=new Rt,i=new Rt,a=new vt,o=new vt,l=new vt;for(let u=0,d=0;u<r.length;u+=9,d+=6){t.set(r[u+0],r[u+1],r[u+2]),e.set(r[u+3],r[u+4],r[u+5]),n.set(r[u+6],r[u+7],r[u+8]),a.set(s[d+0],s[d+1]),o.set(s[d+2],s[d+3]),l.set(s[d+4],s[d+5]),i.copy(t).add(e).add(n).divideScalar(3);const p=h(i);c(a,d+0,t,p),c(o,d+2,e,p),c(l,d+4,n,p)}})(),function(){for(let t=0;t<s.length;t+=6){const e=s[t+0],n=s[t+2],i=s[t+4],r=Math.max(e,n,i),a=Math.min(e,n,i);r>.9&&a<.1&&(e<.2&&(s[t+0]+=1),n<.2&&(s[t+2]+=1),i<.2&&(s[t+4]+=1))}}()}(),this.setAttribute("position",new un(r,3)),this.setAttribute("normal",new un(r.slice(),3)),this.setAttribute("uv",new un(s,2)),0===i?this.computeVertexNormals():this.normalizeNormals()}static fromJSON(t){return new Ba(t.vertices,t.indices,t.radius,t.details)}}class za extends Ba{constructor(t=1,e=0){const n=(1+Math.sqrt(5))/2,i=1/n;super([-1,-1,-1,-1,-1,1,-1,1,-1,-1,1,1,1,-1,-1,1,-1,1,1,1,-1,1,1,1,0,-i,-n,0,-i,n,0,i,-n,0,i,n,-i,-n,0,-i,n,0,i,-n,0,i,n,0,-n,0,-i,n,0,-i,-n,0,i,n,0,i],[3,11,7,3,7,15,3,15,13,7,19,17,7,17,6,7,6,15,17,4,8,17,8,10,17,10,6,8,0,16,8,16,2,8,2,10,0,12,1,0,1,18,0,18,16,6,10,2,6,2,13,6,13,15,2,16,18,2,18,3,2,3,13,18,1,9,18,9,11,18,11,3,4,14,12,4,12,0,4,0,8,11,9,5,11,5,19,11,19,7,19,5,14,19,14,4,19,4,17,1,12,14,1,14,5,1,5,9],t,e),this.type="DodecahedronGeometry",this.parameters={radius:t,detail:e}}static fromJSON(t){return new za(t.radius,t.detail)}}const Fa=new Rt,Oa=new Rt,Ha=new Rt,Ua=new ke;class Ga extends wn{constructor(t,e){if(super(),this.type="EdgesGeometry",this.parameters={thresholdAngle:e},e=void 0!==e?e:1,!0===t.isGeometry)return void console.error("THREE.EdgesGeometry no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.");const n=Math.pow(10,4),i=Math.cos(ot*e),r=t.getIndex(),s=t.getAttribute("position"),a=r?r.count:s.count,o=[0,0,0],l=["a","b","c"],c=new Array(3),h={},u=[];for(let t=0;t<a;t+=3){r?(o[0]=r.getX(t),o[1]=r.getX(t+1),o[2]=r.getX(t+2)):(o[0]=t,o[1]=t+1,o[2]=t+2);const{a:e,b:a,c:d}=Ua;if(e.fromBufferAttribute(s,o[0]),a.fromBufferAttribute(s,o[1]),d.fromBufferAttribute(s,o[2]),Ua.getNormal(Ha),c[0]=`${Math.round(e.x*n)},${Math.round(e.y*n)},${Math.round(e.z*n)}`,c[1]=`${Math.round(a.x*n)},${Math.round(a.y*n)},${Math.round(a.z*n)}`,c[2]=`${Math.round(d.x*n)},${Math.round(d.y*n)},${Math.round(d.z*n)}`,c[0]!==c[1]&&c[1]!==c[2]&&c[2]!==c[0])for(let t=0;t<3;t++){const e=(t+1)%3,n=c[t],r=c[e],s=Ua[l[t]],a=Ua[l[e]],d=`${n}_${r}`,p=`${r}_${n}`;p in h&&h[p]?(Ha.dot(h[p].normal)<=i&&(u.push(s.x,s.y,s.z),u.push(a.x,a.y,a.z)),h[p]=null):d in h||(h[d]={index0:o[t],index1:o[e],normal:Ha.clone()})}}for(const t in h)if(h[t]){const{index0:e,index1:n}=h[t];Fa.fromBufferAttribute(s,e),Oa.fromBufferAttribute(s,n),u.push(Fa.x,Fa.y,Fa.z),u.push(Oa.x,Oa.y,Oa.z)}this.setAttribute("position",new un(u,3))}}class ka{constructor(){this.type="Curve",this.arcLengthDivisions=200}getPoint(){return console.warn("THREE.Curve: .getPoint() not implemented."),null}getPointAt(t,e){const n=this.getUtoTmapping(t);return this.getPoint(n,e)}getPoints(t=5){const e=[];for(let n=0;n<=t;n++)e.push(this.getPoint(n/t));return e}getSpacedPoints(t=5){const e=[];for(let n=0;n<=t;n++)e.push(this.getPointAt(n/t));return e}getLength(){const t=this.getLengths();return t[t.length-1]}getLengths(t=this.arcLengthDivisions){if(this.cacheArcLengths&&this.cacheArcLengths.length===t+1&&!this.needsUpdate)return this.cacheArcLengths;this.needsUpdate=!1;const e=[];let n,i=this.getPoint(0),r=0;e.push(0);for(let s=1;s<=t;s++)n=this.getPoint(s/t),r+=n.distanceTo(i),e.push(r),i=n;return this.cacheArcLengths=e,e}updateArcLengths(){this.needsUpdate=!0,this.getLengths()}getUtoTmapping(t,e){const n=this.getLengths();let i=0;const r=n.length;let s;s=e||t*n[r-1];let a,o=0,l=r-1;for(;o<=l;)if(i=Math.floor(o+(l-o)/2),a=n[i]-s,a<0)o=i+1;else{if(!(a>0)){l=i;break}l=i-1}if(i=l,n[i]===s)return i/(r-1);const c=n[i];return(i+(s-c)/(n[i+1]-c))/(r-1)}getTangent(t,e){const n=1e-4;let i=t-n,r=t+n;i<0&&(i=0),r>1&&(r=1);const s=this.getPoint(i),a=this.getPoint(r),o=e||(s.isVector2?new vt:new Rt);return o.copy(a).sub(s).normalize(),o}getTangentAt(t,e){const n=this.getUtoTmapping(t);return this.getTangent(n,e)}computeFrenetFrames(t,e){const n=new Rt,i=[],r=[],s=[],a=new Rt,o=new ae;for(let e=0;e<=t;e++){const n=e/t;i[e]=this.getTangentAt(n,new Rt),i[e].normalize()}r[0]=new Rt,s[0]=new Rt;let l=Number.MAX_VALUE;const c=Math.abs(i[0].x),h=Math.abs(i[0].y),u=Math.abs(i[0].z);c<=l&&(l=c,n.set(1,0,0)),h<=l&&(l=h,n.set(0,1,0)),u<=l&&n.set(0,0,1),a.crossVectors(i[0],n).normalize(),r[0].crossVectors(i[0],a),s[0].crossVectors(i[0],r[0]);for(let e=1;e<=t;e++){if(r[e]=r[e-1].clone(),s[e]=s[e-1].clone(),a.crossVectors(i[e-1],i[e]),a.length()>Number.EPSILON){a.normalize();const t=Math.acos(ht(i[e-1].dot(i[e]),-1,1));r[e].applyMatrix4(o.makeRotationAxis(a,t))}s[e].crossVectors(i[e],r[e])}if(!0===e){let e=Math.acos(ht(r[0].dot(r[t]),-1,1));e/=t,i[0].dot(a.crossVectors(r[0],r[t]))>0&&(e=-e);for(let n=1;n<=t;n++)r[n].applyMatrix4(o.makeRotationAxis(i[n],e*n)),s[n].crossVectors(i[n],r[n])}return{tangents:i,normals:r,binormals:s}}clone(){return(new this.constructor).copy(this)}copy(t){return this.arcLengthDivisions=t.arcLengthDivisions,this}toJSON(){const t={metadata:{version:4.5,type:"Curve",generator:"Curve.toJSON"}};return t.arcLengthDivisions=this.arcLengthDivisions,t.type=this.type,t}fromJSON(t){return this.arcLengthDivisions=t.arcLengthDivisions,this}}class Va extends ka{constructor(t=0,e=0,n=1,i=1,r=0,s=2*Math.PI,a=!1,o=0){super(),this.type="EllipseCurve",this.aX=t,this.aY=e,this.xRadius=n,this.yRadius=i,this.aStartAngle=r,this.aEndAngle=s,this.aClockwise=a,this.aRotation=o}getPoint(t,e){const n=e||new vt,i=2*Math.PI;let r=this.aEndAngle-this.aStartAngle;const s=Math.abs(r)<Number.EPSILON;for(;r<0;)r+=i;for(;r>i;)r-=i;r<Number.EPSILON&&(r=s?0:i),!0!==this.aClockwise||s||(r===i?r=-i:r-=i);const a=this.aStartAngle+t*r;let o=this.aX+this.xRadius*Math.cos(a),l=this.aY+this.yRadius*Math.sin(a);if(0!==this.aRotation){const t=Math.cos(this.aRotation),e=Math.sin(this.aRotation),n=o-this.aX,i=l-this.aY;o=n*t-i*e+this.aX,l=n*e+i*t+this.aY}return n.set(o,l)}copy(t){return super.copy(t),this.aX=t.aX,this.aY=t.aY,this.xRadius=t.xRadius,this.yRadius=t.yRadius,this.aStartAngle=t.aStartAngle,this.aEndAngle=t.aEndAngle,this.aClockwise=t.aClockwise,this.aRotation=t.aRotation,this}toJSON(){const t=super.toJSON();return t.aX=this.aX,t.aY=this.aY,t.xRadius=this.xRadius,t.yRadius=this.yRadius,t.aStartAngle=this.aStartAngle,t.aEndAngle=this.aEndAngle,t.aClockwise=this.aClockwise,t.aRotation=this.aRotation,t}fromJSON(t){return super.fromJSON(t),this.aX=t.aX,this.aY=t.aY,this.xRadius=t.xRadius,this.yRadius=t.yRadius,this.aStartAngle=t.aStartAngle,this.aEndAngle=t.aEndAngle,this.aClockwise=t.aClockwise,this.aRotation=t.aRotation,this}}Va.prototype.isEllipseCurve=!0;class Wa extends Va{constructor(t,e,n,i,r,s){super(t,e,n,n,i,r,s),this.type="ArcCurve"}}function ja(){let t=0,e=0,n=0,i=0;function r(r,s,a,o){t=r,e=a,n=-3*r+3*s-2*a-o,i=2*r-2*s+a+o}return{initCatmullRom:function(t,e,n,i,s){r(e,n,s*(n-t),s*(i-e))},initNonuniformCatmullRom:function(t,e,n,i,s,a,o){let l=(e-t)/s-(n-t)/(s+a)+(n-e)/a,c=(n-e)/a-(i-e)/(a+o)+(i-n)/o;l*=a,c*=a,r(e,n,l,c)},calc:function(r){const s=r*r;return t+e*r+n*s+i*(s*r)}}}Wa.prototype.isArcCurve=!0;const qa=new Rt,Xa=new ja,Ya=new ja,Ja=new ja;class Za extends ka{constructor(t=[],e=!1,n="centripetal",i=.5){super(),this.type="CatmullRomCurve3",this.points=t,this.closed=e,this.curveType=n,this.tension=i}getPoint(t,e=new Rt){const n=e,i=this.points,r=i.length,s=(r-(this.closed?0:1))*t;let a,o,l=Math.floor(s),c=s-l;this.closed?l+=l>0?0:(Math.floor(Math.abs(l)/r)+1)*r:0===c&&l===r-1&&(l=r-2,c=1),this.closed||l>0?a=i[(l-1)%r]:(qa.subVectors(i[0],i[1]).add(i[0]),a=qa);const h=i[l%r],u=i[(l+1)%r];if(this.closed||l+2<r?o=i[(l+2)%r]:(qa.subVectors(i[r-1],i[r-2]).add(i[r-1]),o=qa),"centripetal"===this.curveType||"chordal"===this.curveType){const t="chordal"===this.curveType?.5:.25;let e=Math.pow(a.distanceToSquared(h),t),n=Math.pow(h.distanceToSquared(u),t),i=Math.pow(u.distanceToSquared(o),t);n<1e-4&&(n=1),e<1e-4&&(e=n),i<1e-4&&(i=n),Xa.initNonuniformCatmullRom(a.x,h.x,u.x,o.x,e,n,i),Ya.initNonuniformCatmullRom(a.y,h.y,u.y,o.y,e,n,i),Ja.initNonuniformCatmullRom(a.z,h.z,u.z,o.z,e,n,i)}else"catmullrom"===this.curveType&&(Xa.initCatmullRom(a.x,h.x,u.x,o.x,this.tension),Ya.initCatmullRom(a.y,h.y,u.y,o.y,this.tension),Ja.initCatmullRom(a.z,h.z,u.z,o.z,this.tension));return n.set(Xa.calc(c),Ya.calc(c),Ja.calc(c)),n}copy(t){super.copy(t),this.points=[];for(let e=0,n=t.points.length;e<n;e++){const n=t.points[e];this.points.push(n.clone())}return this.closed=t.closed,this.curveType=t.curveType,this.tension=t.tension,this}toJSON(){const t=super.toJSON();t.points=[];for(let e=0,n=this.points.length;e<n;e++){const n=this.points[e];t.points.push(n.toArray())}return t.closed=this.closed,t.curveType=this.curveType,t.tension=this.tension,t}fromJSON(t){super.fromJSON(t),this.points=[];for(let e=0,n=t.points.length;e<n;e++){const n=t.points[e];this.points.push((new Rt).fromArray(n))}return this.closed=t.closed,this.curveType=t.curveType,this.tension=t.tension,this}}function Qa(t,e,n,i,r){const s=.5*(i-e),a=.5*(r-n),o=t*t;return(2*n-2*i+s+a)*(t*o)+(-3*n+3*i-2*s-a)*o+s*t+n}function Ka(t,e,n,i){return function(t,e){const n=1-t;return n*n*e}(t,e)+function(t,e){return 2*(1-t)*t*e}(t,n)+function(t,e){return t*t*e}(t,i)}function $a(t,e,n,i,r){return function(t,e){const n=1-t;return n*n*n*e}(t,e)+function(t,e){const n=1-t;return 3*n*n*t*e}(t,n)+function(t,e){return 3*(1-t)*t*t*e}(t,i)+function(t,e){return t*t*t*e}(t,r)}Za.prototype.isCatmullRomCurve3=!0;class to extends ka{constructor(t=new vt,e=new vt,n=new vt,i=new vt){super(),this.type="CubicBezierCurve",this.v0=t,this.v1=e,this.v2=n,this.v3=i}getPoint(t,e=new vt){const n=e,i=this.v0,r=this.v1,s=this.v2,a=this.v3;return n.set($a(t,i.x,r.x,s.x,a.x),$a(t,i.y,r.y,s.y,a.y)),n}copy(t){return super.copy(t),this.v0.copy(t.v0),this.v1.copy(t.v1),this.v2.copy(t.v2),this.v3.copy(t.v3),this}toJSON(){const t=super.toJSON();return t.v0=this.v0.toArray(),t.v1=this.v1.toArray(),t.v2=this.v2.toArray(),t.v3=this.v3.toArray(),t}fromJSON(t){return super.fromJSON(t),this.v0.fromArray(t.v0),this.v1.fromArray(t.v1),this.v2.fromArray(t.v2),this.v3.fromArray(t.v3),this}}to.prototype.isCubicBezierCurve=!0;class eo extends ka{constructor(t=new Rt,e=new Rt,n=new Rt,i=new Rt){super(),this.type="CubicBezierCurve3",this.v0=t,this.v1=e,this.v2=n,this.v3=i}getPoint(t,e=new Rt){const n=e,i=this.v0,r=this.v1,s=this.v2,a=this.v3;return n.set($a(t,i.x,r.x,s.x,a.x),$a(t,i.y,r.y,s.y,a.y),$a(t,i.z,r.z,s.z,a.z)),n}copy(t){return super.copy(t),this.v0.copy(t.v0),this.v1.copy(t.v1),this.v2.copy(t.v2),this.v3.copy(t.v3),this}toJSON(){const t=super.toJSON();return t.v0=this.v0.toArray(),t.v1=this.v1.toArray(),t.v2=this.v2.toArray(),t.v3=this.v3.toArray(),t}fromJSON(t){return super.fromJSON(t),this.v0.fromArray(t.v0),this.v1.fromArray(t.v1),this.v2.fromArray(t.v2),this.v3.fromArray(t.v3),this}}eo.prototype.isCubicBezierCurve3=!0;class no extends ka{constructor(t=new vt,e=new vt){super(),this.type="LineCurve",this.v1=t,this.v2=e}getPoint(t,e=new vt){const n=e;return 1===t?n.copy(this.v2):(n.copy(this.v2).sub(this.v1),n.multiplyScalar(t).add(this.v1)),n}getPointAt(t,e){return this.getPoint(t,e)}getTangent(t,e){const n=e||new vt;return n.copy(this.v2).sub(this.v1).normalize(),n}copy(t){return super.copy(t),this.v1.copy(t.v1),this.v2.copy(t.v2),this}toJSON(){const t=super.toJSON();return t.v1=this.v1.toArray(),t.v2=this.v2.toArray(),t}fromJSON(t){return super.fromJSON(t),this.v1.fromArray(t.v1),this.v2.fromArray(t.v2),this}}no.prototype.isLineCurve=!0;class io extends ka{constructor(t=new Rt,e=new Rt){super(),this.type="LineCurve3",this.isLineCurve3=!0,this.v1=t,this.v2=e}getPoint(t,e=new Rt){const n=e;return 1===t?n.copy(this.v2):(n.copy(this.v2).sub(this.v1),n.multiplyScalar(t).add(this.v1)),n}getPointAt(t,e){return this.getPoint(t,e)}copy(t){return super.copy(t),this.v1.copy(t.v1),this.v2.copy(t.v2),this}toJSON(){const t=super.toJSON();return t.v1=this.v1.toArray(),t.v2=this.v2.toArray(),t}fromJSON(t){return super.fromJSON(t),this.v1.fromArray(t.v1),this.v2.fromArray(t.v2),this}}class ro extends ka{constructor(t=new vt,e=new vt,n=new vt){super(),this.type="QuadraticBezierCurve",this.v0=t,this.v1=e,this.v2=n}getPoint(t,e=new vt){const n=e,i=this.v0,r=this.v1,s=this.v2;return n.set(Ka(t,i.x,r.x,s.x),Ka(t,i.y,r.y,s.y)),n}copy(t){return super.copy(t),this.v0.copy(t.v0),this.v1.copy(t.v1),this.v2.copy(t.v2),this}toJSON(){const t=super.toJSON();return t.v0=this.v0.toArray(),t.v1=this.v1.toArray(),t.v2=this.v2.toArray(),t}fromJSON(t){return super.fromJSON(t),this.v0.fromArray(t.v0),this.v1.fromArray(t.v1),this.v2.fromArray(t.v2),this}}ro.prototype.isQuadraticBezierCurve=!0;class so extends ka{constructor(t=new Rt,e=new Rt,n=new Rt){super(),this.type="QuadraticBezierCurve3",this.v0=t,this.v1=e,this.v2=n}getPoint(t,e=new Rt){const n=e,i=this.v0,r=this.v1,s=this.v2;return n.set(Ka(t,i.x,r.x,s.x),Ka(t,i.y,r.y,s.y),Ka(t,i.z,r.z,s.z)),n}copy(t){return super.copy(t),this.v0.copy(t.v0),this.v1.copy(t.v1),this.v2.copy(t.v2),this}toJSON(){const t=super.toJSON();return t.v0=this.v0.toArray(),t.v1=this.v1.toArray(),t.v2=this.v2.toArray(),t}fromJSON(t){return super.fromJSON(t),this.v0.fromArray(t.v0),this.v1.fromArray(t.v1),this.v2.fromArray(t.v2),this}}so.prototype.isQuadraticBezierCurve3=!0;class ao extends ka{constructor(t=[]){super(),this.type="SplineCurve",this.points=t}getPoint(t,e=new vt){const n=e,i=this.points,r=(i.length-1)*t,s=Math.floor(r),a=r-s,o=i[0===s?s:s-1],l=i[s],c=i[s>i.length-2?i.length-1:s+1],h=i[s>i.length-3?i.length-1:s+2];return n.set(Qa(a,o.x,l.x,c.x,h.x),Qa(a,o.y,l.y,c.y,h.y)),n}copy(t){super.copy(t),this.points=[];for(let e=0,n=t.points.length;e<n;e++){const n=t.points[e];this.points.push(n.clone())}return this}toJSON(){const t=super.toJSON();t.points=[];for(let e=0,n=this.points.length;e<n;e++){const n=this.points[e];t.points.push(n.toArray())}return t}fromJSON(t){super.fromJSON(t),this.points=[];for(let e=0,n=t.points.length;e<n;e++){const n=t.points[e];this.points.push((new vt).fromArray(n))}return this}}ao.prototype.isSplineCurve=!0;var oo=Object.freeze({__proto__:null,ArcCurve:Wa,CatmullRomCurve3:Za,CubicBezierCurve:to,CubicBezierCurve3:eo,EllipseCurve:Va,LineCurve:no,LineCurve3:io,QuadraticBezierCurve:ro,QuadraticBezierCurve3:so,SplineCurve:ao});const lo=function(t,e,n=2){const i=e&&e.length,r=i?e[0]*n:t.length;let s=co(t,0,r,n,!0);const a=[];if(!s||s.next===s.prev)return a;let o,l,c,h,u,d,p;if(i&&(s=function(t,e,n,i){const r=[];let s,a,o,l,c;for(s=0,a=e.length;s<a;s++)o=e[s]*i,l=s<a-1?e[s+1]*i:t.length,c=co(t,o,l,i,!1),c===c.next&&(c.steiner=!0),r.push(bo(c));for(r.sort(vo),s=0;s<r.length;s++)yo(r[s],n),n=ho(n,n.next);return n}(t,e,s,n)),t.length>80*n){o=c=t[0],l=h=t[1];for(let e=n;e<r;e+=n)u=t[e],d=t[e+1],u<o&&(o=u),d<l&&(l=d),u>c&&(c=u),d>h&&(h=d);p=Math.max(c-o,h-l),p=0!==p?1/p:0}return uo(s,a,n,o,l,p),a};function co(t,e,n,i,r){let s,a;if(r===function(t,e,n,i){let r=0;for(let s=e,a=n-i;s<n;s+=i)r+=(t[a]-t[s])*(t[s+1]+t[a+1]),a=s;return r}(t,e,n,i)>0)for(s=e;s<n;s+=i)a=Po(s,t[s],t[s+1],a);else for(s=n-i;s>=e;s-=i)a=Po(s,t[s],t[s+1],a);return a&&To(a,a.next)&&(Do(a),a=a.next),a}function ho(t,e){if(!t)return t;e||(e=t);let n,i=t;do{if(n=!1,i.steiner||!To(i,i.next)&&0!==So(i.prev,i,i.next))i=i.next;else{if(Do(i),i=e=i.prev,i===i.next)break;n=!0}}while(n||i!==e);return e}function 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So(t,e,n){return(e.y-t.y)*(n.x-e.x)-(e.x-t.x)*(n.y-e.y)}function To(t,e){return t.x===e.x&&t.y===e.y}function Eo(t,e,n,i){const r=Lo(So(t,e,n)),s=Lo(So(t,e,i)),a=Lo(So(n,i,t)),o=Lo(So(n,i,e));return r!==s&&a!==o||(!(0!==r||!Ao(t,n,e))||(!(0!==s||!Ao(t,i,e))||(!(0!==a||!Ao(n,t,i))||!(0!==o||!Ao(n,e,i)))))}function Ao(t,e,n){return e.x<=Math.max(t.x,n.x)&&e.x>=Math.min(t.x,n.x)&&e.y<=Math.max(t.y,n.y)&&e.y>=Math.min(t.y,n.y)}function Lo(t){return t>0?1:t<0?-1:0}function Ro(t,e){return So(t.prev,t,t.next)<0?So(t,e,t.next)>=0&&So(t,t.prev,e)>=0:So(t,e,t.prev)<0||So(t,t.next,e)<0}function Co(t,e){const n=new Io(t.i,t.x,t.y),i=new Io(e.i,e.x,e.y),r=t.next,s=e.prev;return t.next=e,e.prev=t,n.next=r,r.prev=n,i.next=n,n.prev=i,s.next=i,i.prev=s,i}function Po(t,e,n,i){const r=new Io(t,e,n);return i?(r.next=i.next,r.prev=i,i.next.prev=r,i.next=r):(r.prev=r,r.next=r),r}function Do(t){t.next.prev=t.prev,t.prev.next=t.next,t.prevZ&&(t.prevZ.nextZ=t.nextZ),t.nextZ&&(t.nextZ.prevZ=t.prevZ)}function Io(t,e,n){this.i=t,this.x=e,this.y=n,this.prev=null,this.next=null,this.z=null,this.prevZ=null,this.nextZ=null,this.steiner=!1}class No{static area(t){const e=t.length;let n=0;for(let i=e-1,r=0;r<e;i=r++)n+=t[i].x*t[r].y-t[r].x*t[i].y;return.5*n}static isClockWise(t){return No.area(t)<0}static triangulateShape(t,e){const n=[],i=[],r=[];Bo(t),zo(n,t);let s=t.length;e.forEach(Bo);for(let t=0;t<e.length;t++)i.push(s),s+=e[t].length,zo(n,e[t]);const a=lo(n,i);for(let t=0;t<a.length;t+=3)r.push(a.slice(t,t+3));return r}}function Bo(t){const e=t.length;e>2&&t[e-1].equals(t[0])&&t.pop()}function zo(t,e){for(let n=0;n<e.length;n++)t.push(e[n].x),t.push(e[n].y)}class Fo extends wn{constructor(t,e){super(),this.type="ExtrudeGeometry",this.parameters={shapes:t,options:e},t=Array.isArray(t)?t:[t];const n=this,i=[],r=[];for(let e=0,n=t.length;e<n;e++){s(t[e])}function s(t){const s=[],a=void 0!==e.curveSegments?e.curveSegments:12,o=void 0!==e.steps?e.steps:1;let l=void 0!==e.depth?e.depth:100,c=void 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t=0,e=S.length;t<e;t++){const e=S[t];I=D[t];for(let t=0,r=e.length;t<r;t++){const r=A(e[t],I[t],i);F(r.x,r.y,-n)}}}const B=u+d;for(let t=0;t<L;t++){const e=c?A(w[t],N[t],B):w[t];b?(x.copy(v.normals[0]).multiplyScalar(e.x),y.copy(v.binormals[0]).multiplyScalar(e.y),_.copy(g[0]).add(x).add(y),F(_.x,_.y,_.z)):F(e.x,e.y,0)}for(let t=1;t<=o;t++)for(let e=0;e<L;e++){const n=c?A(w[e],N[e],B):w[e];b?(x.copy(v.normals[t]).multiplyScalar(n.x),y.copy(v.binormals[t]).multiplyScalar(n.y),_.copy(g[t]).add(x).add(y),F(_.x,_.y,_.z)):F(n.x,n.y,l/o*t)}for(let t=p-1;t>=0;t--){const e=t/p,n=h*Math.cos(e*Math.PI/2),i=u*Math.sin(e*Math.PI/2)+d;for(let t=0,e=E.length;t<e;t++){const e=A(E[t],P[t],i);F(e.x,e.y,l+n)}for(let t=0,e=S.length;t<e;t++){const e=S[t];I=D[t];for(let t=0,r=e.length;t<r;t++){const r=A(e[t],I[t],i);b?F(r.x,r.y+g[o-1].y,g[o-1].x+n):F(r.x,r.y,l+n)}}}function z(t,e){let n=t.length;for(;--n>=0;){const i=n;let r=n-1;r<0&&(r=t.length-1);for(let t=0,n=o+2*p;t<n;t++){const n=L*t,s=L*(t+1);H(e+i+n,e+r+n,e+r+s,e+i+s)}}}function F(t,e,n){s.push(t),s.push(e),s.push(n)}function O(t,e,r){U(t),U(e),U(r);const s=i.length/3,a=f.generateTopUV(n,i,s-3,s-2,s-1);G(a[0]),G(a[1]),G(a[2])}function H(t,e,r,s){U(t),U(e),U(s),U(e),U(r),U(s);const a=i.length/3,o=f.generateSideWallUV(n,i,a-6,a-3,a-2,a-1);G(o[0]),G(o[1]),G(o[3]),G(o[1]),G(o[2]),G(o[3])}function U(t){i.push(s[3*t+0]),i.push(s[3*t+1]),i.push(s[3*t+2])}function G(t){r.push(t.x),r.push(t.y)}!function(){const t=i.length/3;if(c){let t=0,e=L*t;for(let t=0;t<R;t++){const n=T[t];O(n[2]+e,n[1]+e,n[0]+e)}t=o+2*p,e=L*t;for(let t=0;t<R;t++){const n=T[t];O(n[0]+e,n[1]+e,n[2]+e)}}else{for(let t=0;t<R;t++){const e=T[t];O(e[2],e[1],e[0])}for(let t=0;t<R;t++){const e=T[t];O(e[0]+L*o,e[1]+L*o,e[2]+L*o)}}n.addGroup(t,i.length/3-t,0)}(),function(){const t=i.length/3;let e=0;z(E,e),e+=E.length;for(let t=0,n=S.length;t<n;t++){const n=S[t];z(n,e),e+=n.length}n.addGroup(t,i.length/3-t,1)}()}this.setAttribute("position",new un(i,3)),this.setAttribute("uv",new un(r,2)),this.computeVertexNormals()}toJSON(){const t=super.toJSON();return function(t,e,n){if(n.shapes=[],Array.isArray(t))for(let e=0,i=t.length;e<i;e++){const i=t[e];n.shapes.push(i.uuid)}else n.shapes.push(t.uuid);void 0!==e.extrudePath&&(n.options.extrudePath=e.extrudePath.toJSON());return n}(this.parameters.shapes,this.parameters.options,t)}static fromJSON(t,e){const n=[];for(let i=0,r=t.shapes.length;i<r;i++){const r=e[t.shapes[i]];n.push(r)}const i=t.options.extrudePath;return void 0!==i&&(t.options.extrudePath=(new oo[i.type]).fromJSON(i)),new Fo(n,t.options)}}const Oo={generateTopUV:function(t,e,n,i,r){const s=e[3*n],a=e[3*n+1],o=e[3*i],l=e[3*i+1],c=e[3*r],h=e[3*r+1];return[new vt(s,a),new vt(o,l),new vt(c,h)]},generateSideWallUV:function(t,e,n,i,r,s){const a=e[3*n],o=e[3*n+1],l=e[3*n+2],c=e[3*i],h=e[3*i+1],u=e[3*i+2],d=e[3*r],p=e[3*r+1],m=e[3*r+2],f=e[3*s],g=e[3*s+1],v=e[3*s+2];return Math.abs(o-h)<Math.abs(a-c)?[new vt(a,1-l),new vt(c,1-u),new vt(d,1-m),new vt(f,1-v)]:[new vt(o,1-l),new vt(h,1-u),new vt(p,1-m),new vt(g,1-v)]}};class Ho extends Ba{constructor(t=1,e=0){const n=(1+Math.sqrt(5))/2;super([-1,n,0,1,n,0,-1,-n,0,1,-n,0,0,-1,n,0,1,n,0,-1,-n,0,1,-n,n,0,-1,n,0,1,-n,0,-1,-n,0,1],[0,11,5,0,5,1,0,1,7,0,7,10,0,10,11,1,5,9,5,11,4,11,10,2,10,7,6,7,1,8,3,9,4,3,4,2,3,2,6,3,6,8,3,8,9,4,9,5,2,4,11,6,2,10,8,6,7,9,8,1],t,e),this.type="IcosahedronGeometry",this.parameters={radius:t,detail:e}}static fromJSON(t){return new Ho(t.radius,t.detail)}}class Uo extends wn{constructor(t,e=12,n=0,i=2*Math.PI){super(),this.type="LatheGeometry",this.parameters={points:t,segments:e,phiStart:n,phiLength:i},e=Math.floor(e),i=ht(i,0,2*Math.PI);const r=[],s=[],a=[],o=1/e,l=new Rt,c=new vt;for(let r=0;r<=e;r++){const h=n+r*o*i,u=Math.sin(h),d=Math.cos(h);for(let n=0;n<=t.length-1;n++)l.x=t[n].x*u,l.y=t[n].y,l.z=t[n].x*d,s.push(l.x,l.y,l.z),c.x=r/e,c.y=n/(t.length-1),a.push(c.x,c.y)}for(let n=0;n<e;n++)for(let e=0;e<t.length-1;e++){const i=e+n*t.length,s=i,a=i+t.length,o=i+t.length+1,l=i+1;r.push(s,a,l),r.push(a,o,l)}if(this.setIndex(r),this.setAttribute("position",new un(s,3)),this.setAttribute("uv",new un(a,2)),this.computeVertexNormals(),i===2*Math.PI){const n=this.attributes.normal.array,i=new Rt,r=new Rt,s=new Rt,a=e*t.length*3;for(let e=0,o=0;e<t.length;e++,o+=3)i.x=n[o+0],i.y=n[o+1],i.z=n[o+2],r.x=n[a+o+0],r.y=n[a+o+1],r.z=n[a+o+2],s.addVectors(i,r).normalize(),n[o+0]=n[a+o+0]=s.x,n[o+1]=n[a+o+1]=s.y,n[o+2]=n[a+o+2]=s.z}}static fromJSON(t){return new Uo(t.points,t.segments,t.phiStart,t.phiLength)}}class Go extends Ba{constructor(t=1,e=0){super([1,0,0,-1,0,0,0,1,0,0,-1,0,0,0,1,0,0,-1],[0,2,4,0,4,3,0,3,5,0,5,2,1,2,5,1,5,3,1,3,4,1,4,2],t,e),this.type="OctahedronGeometry",this.parameters={radius:t,detail:e}}static fromJSON(t){return new Go(t.radius,t.detail)}}class ko extends wn{constructor(t,e,n){super(),this.type="ParametricGeometry",this.parameters={func:t,slices:e,stacks:n};const i=[],r=[],s=[],a=[],o=1e-5,l=new Rt,c=new Rt,h=new Rt,u=new Rt,d=new Rt;t.length<3&&console.error("THREE.ParametricGeometry: Function must now modify a Vector3 as third parameter.");const p=e+1;for(let i=0;i<=n;i++){const p=i/n;for(let n=0;n<=e;n++){const i=n/e;t(i,p,c),r.push(c.x,c.y,c.z),i-o>=0?(t(i-o,p,h),u.subVectors(c,h)):(t(i+o,p,h),u.subVectors(h,c)),p-o>=0?(t(i,p-o,h),d.subVectors(c,h)):(t(i,p+o,h),d.subVectors(h,c)),l.crossVectors(u,d).normalize(),s.push(l.x,l.y,l.z),a.push(i,p)}}for(let t=0;t<n;t++)for(let n=0;n<e;n++){const e=t*p+n,r=t*p+n+1,s=(t+1)*p+n+1,a=(t+1)*p+n;i.push(e,r,a),i.push(r,s,a)}this.setIndex(i),this.setAttribute("position",new un(r,3)),this.setAttribute("normal",new un(s,3)),this.setAttribute("uv",new un(a,2))}}class Vo extends wn{constructor(t=.5,e=1,n=8,i=1,r=0,s=2*Math.PI){super(),this.type="RingGeometry",this.parameters={innerRadius:t,outerRadius:e,thetaSegments:n,phiSegments:i,thetaStart:r,thetaLength:s},n=Math.max(3,n);const a=[],o=[],l=[],c=[];let h=t;const u=(e-t)/(i=Math.max(1,i)),d=new Rt,p=new vt;for(let t=0;t<=i;t++){for(let t=0;t<=n;t++){const i=r+t/n*s;d.x=h*Math.cos(i),d.y=h*Math.sin(i),o.push(d.x,d.y,d.z),l.push(0,0,1),p.x=(d.x/e+1)/2,p.y=(d.y/e+1)/2,c.push(p.x,p.y)}h+=u}for(let t=0;t<i;t++){const e=t*(n+1);for(let t=0;t<n;t++){const i=t+e,r=i,s=i+n+1,o=i+n+2,l=i+1;a.push(r,s,l),a.push(s,o,l)}}this.setIndex(a),this.setAttribute("position",new un(o,3)),this.setAttribute("normal",new un(l,3)),this.setAttribute("uv",new un(c,2))}static fromJSON(t){return new Vo(t.innerRadius,t.outerRadius,t.thetaSegments,t.phiSegments,t.thetaStart,t.thetaLength)}}class Wo extends wn{constructor(t,e=12){super(),this.type="ShapeGeometry",this.parameters={shapes:t,curveSegments:e};const n=[],i=[],r=[],s=[];let a=0,o=0;if(!1===Array.isArray(t))l(t);else for(let e=0;e<t.length;e++)l(t[e]),this.addGroup(a,o,e),a+=o,o=0;function l(t){const a=i.length/3,l=t.extractPoints(e);let c=l.shape;const h=l.holes;!1===No.isClockWise(c)&&(c=c.reverse());for(let t=0,e=h.length;t<e;t++){const e=h[t];!0===No.isClockWise(e)&&(h[t]=e.reverse())}const u=No.triangulateShape(c,h);for(let t=0,e=h.length;t<e;t++){const e=h[t];c=c.concat(e)}for(let t=0,e=c.length;t<e;t++){const e=c[t];i.push(e.x,e.y,0),r.push(0,0,1),s.push(e.x,e.y)}for(let t=0,e=u.length;t<e;t++){const e=u[t],i=e[0]+a,r=e[1]+a,s=e[2]+a;n.push(i,r,s),o+=3}}this.setIndex(n),this.setAttribute("position",new un(i,3)),this.setAttribute("normal",new un(r,3)),this.setAttribute("uv",new un(s,2))}toJSON(){const t=super.toJSON();return function(t,e){if(e.shapes=[],Array.isArray(t))for(let n=0,i=t.length;n<i;n++){const i=t[n];e.shapes.push(i.uuid)}else e.shapes.push(t.uuid);return e}(this.parameters.shapes,t)}static fromJSON(t,e){const n=[];for(let i=0,r=t.shapes.length;i<r;i++){const r=e[t.shapes[i]];n.push(r)}return new Wo(n,t.curveSegments)}}class jo extends wn{constructor(t=1,e=8,n=6,i=0,r=2*Math.PI,s=0,a=Math.PI){super(),this.type="SphereGeometry",this.parameters={radius:t,widthSegments:e,heightSegments:n,phiStart:i,phiLength:r,thetaStart:s,thetaLength:a},e=Math.max(3,Math.floor(e)),n=Math.max(2,Math.floor(n));const o=Math.min(s+a,Math.PI);let l=0;const c=[],h=new Rt,u=new Rt,d=[],p=[],m=[],f=[];for(let d=0;d<=n;d++){const g=[],v=d/n;let y=0;0==d&&0==s?y=.5/e:d==n&&o==Math.PI&&(y=-.5/e);for(let n=0;n<=e;n++){const o=n/e;h.x=-t*Math.cos(i+o*r)*Math.sin(s+v*a),h.y=t*Math.cos(s+v*a),h.z=t*Math.sin(i+o*r)*Math.sin(s+v*a),p.push(h.x,h.y,h.z),u.copy(h).normalize(),m.push(u.x,u.y,u.z),f.push(o+y,1-v),g.push(l++)}c.push(g)}for(let t=0;t<n;t++)for(let i=0;i<e;i++){const e=c[t][i+1],r=c[t][i],a=c[t+1][i],l=c[t+1][i+1];(0!==t||s>0)&&d.push(e,r,l),(t!==n-1||o<Math.PI)&&d.push(r,a,l)}this.setIndex(d),this.setAttribute("position",new un(p,3)),this.setAttribute("normal",new un(m,3)),this.setAttribute("uv",new un(f,2))}static fromJSON(t){return new jo(t.radius,t.widthSegments,t.heightSegments,t.phiStart,t.phiLength,t.thetaStart,t.thetaLength)}}class qo extends Ba{constructor(t=1,e=0){super([1,1,1,-1,-1,1,-1,1,-1,1,-1,-1],[2,1,0,0,3,2,1,3,0,2,3,1],t,e),this.type="TetrahedronGeometry",this.parameters={radius:t,detail:e}}static fromJSON(t){return new qo(t.radius,t.detail)}}class Xo extends Fo{constructor(t,e={}){const n=e.font;if(!n||!n.isFont)return console.error("THREE.TextGeometry: font parameter is not an instance of THREE.Font."),new wn;const i=n.generateShapes(t,e.size);e.depth=void 0!==e.height?e.height:50,void 0===e.bevelThickness&&(e.bevelThickness=10),void 0===e.bevelSize&&(e.bevelSize=8),void 0===e.bevelEnabled&&(e.bevelEnabled=!1),super(i,e),this.type="TextGeometry"}}class Yo extends wn{constructor(t=1,e=.4,n=8,i=6,r=2*Math.PI){super(),this.type="TorusGeometry",this.parameters={radius:t,tube:e,radialSegments:n,tubularSegments:i,arc:r},n=Math.floor(n),i=Math.floor(i);const s=[],a=[],o=[],l=[],c=new Rt,h=new Rt,u=new Rt;for(let s=0;s<=n;s++)for(let d=0;d<=i;d++){const p=d/i*r,m=s/n*Math.PI*2;h.x=(t+e*Math.cos(m))*Math.cos(p),h.y=(t+e*Math.cos(m))*Math.sin(p),h.z=e*Math.sin(m),a.push(h.x,h.y,h.z),c.x=t*Math.cos(p),c.y=t*Math.sin(p),u.subVectors(h,c).normalize(),o.push(u.x,u.y,u.z),l.push(d/i),l.push(s/n)}for(let t=1;t<=n;t++)for(let e=1;e<=i;e++){const n=(i+1)*t+e-1,r=(i+1)*(t-1)+e-1,a=(i+1)*(t-1)+e,o=(i+1)*t+e;s.push(n,r,o),s.push(r,a,o)}this.setIndex(s),this.setAttribute("position",new un(a,3)),this.setAttribute("normal",new un(o,3)),this.setAttribute("uv",new un(l,2))}static fromJSON(t){return new Yo(t.radius,t.tube,t.radialSegments,t.tubularSegments,t.arc)}}class Jo extends wn{constructor(t=1,e=.4,n=64,i=8,r=2,s=3){super(),this.type="TorusKnotGeometry",this.parameters={radius:t,tube:e,tubularSegments:n,radialSegments:i,p:r,q:s},n=Math.floor(n),i=Math.floor(i);const a=[],o=[],l=[],c=[],h=new Rt,u=new Rt,d=new Rt,p=new Rt,m=new Rt,f=new Rt,g=new Rt;for(let a=0;a<=n;++a){const y=a/n*r*Math.PI*2;v(y,r,s,t,d),v(y+.01,r,s,t,p),f.subVectors(p,d),g.addVectors(p,d),m.crossVectors(f,g),g.crossVectors(m,f),m.normalize(),g.normalize();for(let t=0;t<=i;++t){const r=t/i*Math.PI*2,s=-e*Math.cos(r),p=e*Math.sin(r);h.x=d.x+(s*g.x+p*m.x),h.y=d.y+(s*g.y+p*m.y),h.z=d.z+(s*g.z+p*m.z),o.push(h.x,h.y,h.z),u.subVectors(h,d).normalize(),l.push(u.x,u.y,u.z),c.push(a/n),c.push(t/i)}}for(let t=1;t<=n;t++)for(let e=1;e<=i;e++){const n=(i+1)*(t-1)+(e-1),r=(i+1)*t+(e-1),s=(i+1)*t+e,o=(i+1)*(t-1)+e;a.push(n,r,o),a.push(r,s,o)}function v(t,e,n,i,r){const s=Math.cos(t),a=Math.sin(t),o=n/e*t,l=Math.cos(o);r.x=i*(2+l)*.5*s,r.y=i*(2+l)*a*.5,r.z=i*Math.sin(o)*.5}this.setIndex(a),this.setAttribute("position",new un(o,3)),this.setAttribute("normal",new un(l,3)),this.setAttribute("uv",new un(c,2))}static fromJSON(t){return new Jo(t.radius,t.tube,t.tubularSegments,t.radialSegments,t.p,t.q)}}class Zo extends wn{constructor(t,e=64,n=1,i=8,r=!1){super(),this.type="TubeGeometry",this.parameters={path:t,tubularSegments:e,radius:n,radialSegments:i,closed:r};const s=t.computeFrenetFrames(e,r);this.tangents=s.tangents,this.normals=s.normals,this.binormals=s.binormals;const a=new Rt,o=new Rt,l=new vt;let c=new Rt;const h=[],u=[],d=[],p=[];function m(r){c=t.getPointAt(r/e,c);const l=s.normals[r],d=s.binormals[r];for(let t=0;t<=i;t++){const e=t/i*Math.PI*2,r=Math.sin(e),s=-Math.cos(e);o.x=s*l.x+r*d.x,o.y=s*l.y+r*d.y,o.z=s*l.z+r*d.z,o.normalize(),u.push(o.x,o.y,o.z),a.x=c.x+n*o.x,a.y=c.y+n*o.y,a.z=c.z+n*o.z,h.push(a.x,a.y,a.z)}}!function(){for(let t=0;t<e;t++)m(t);m(!1===r?e:0),function(){for(let t=0;t<=e;t++)for(let n=0;n<=i;n++)l.x=t/e,l.y=n/i,d.push(l.x,l.y)}(),function(){for(let t=1;t<=e;t++)for(let e=1;e<=i;e++){const n=(i+1)*(t-1)+(e-1),r=(i+1)*t+(e-1),s=(i+1)*t+e,a=(i+1)*(t-1)+e;p.push(n,r,a),p.push(r,s,a)}}()}(),this.setIndex(p),this.setAttribute("position",new un(h,3)),this.setAttribute("normal",new un(u,3)),this.setAttribute("uv",new un(d,2))}toJSON(){const t=super.toJSON();return t.path=this.parameters.path.toJSON(),t}static fromJSON(t){return new Zo((new oo[t.path.type]).fromJSON(t.path),t.tubularSegments,t.radius,t.radialSegments,t.closed)}}class Qo extends wn{constructor(t){if(super(),this.type="WireframeGeometry",!0===t.isGeometry)return void console.error("THREE.WireframeGeometry no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.");const e=[],n=[0,0],i={},r=new Rt;if(null!==t.index){const s=t.attributes.position,a=t.index;let o=t.groups;0===o.length&&(o=[{start:0,count:a.count,materialIndex:0}]);for(let t=0,e=o.length;t<e;++t){const e=o[t],r=e.start;for(let t=r,s=r+e.count;t<s;t+=3)for(let e=0;e<3;e++){const r=a.getX(t+e),s=a.getX(t+(e+1)%3);n[0]=Math.min(r,s),n[1]=Math.max(r,s);const o=n[0]+","+n[1];void 0===i[o]&&(i[o]={index1:n[0],index2:n[1]})}}for(const t in i){const n=i[t];r.fromBufferAttribute(s,n.index1),e.push(r.x,r.y,r.z),r.fromBufferAttribute(s,n.index2),e.push(r.x,r.y,r.z)}}else{const n=t.attributes.position;for(let t=0,i=n.count/3;t<i;t++)for(let i=0;i<3;i++){const s=3*t+i;r.fromBufferAttribute(n,s),e.push(r.x,r.y,r.z);const a=3*t+(i+1)%3;r.fromBufferAttribute(n,a),e.push(r.x,r.y,r.z)}}this.setAttribute("position",new un(e,3))}}var Ko=Object.freeze({__proto__:null,BoxGeometry:Vn,BoxBufferGeometry:Vn,CircleGeometry:Da,CircleBufferGeometry:Da,ConeGeometry:Na,ConeBufferGeometry:Na,CylinderGeometry:Ia,CylinderBufferGeometry:Ia,DodecahedronGeometry:za,DodecahedronBufferGeometry:za,EdgesGeometry:Ga,ExtrudeGeometry:Fo,ExtrudeBufferGeometry:Fo,IcosahedronGeometry:Ho,IcosahedronBufferGeometry:Ho,LatheGeometry:Uo,LatheBufferGeometry:Uo,OctahedronGeometry:Go,OctahedronBufferGeometry:Go,ParametricGeometry:ko,ParametricBufferGeometry:ko,PlaneGeometry:ci,PlaneBufferGeometry:ci,PolyhedronGeometry:Ba,PolyhedronBufferGeometry:Ba,RingGeometry:Vo,RingBufferGeometry:Vo,ShapeGeometry:Wo,ShapeBufferGeometry:Wo,SphereGeometry:jo,SphereBufferGeometry:jo,TetrahedronGeometry:qo,TetrahedronBufferGeometry:qo,TextGeometry:Xo,TextBufferGeometry:Xo,TorusGeometry:Yo,TorusBufferGeometry:Yo,TorusKnotGeometry:Jo,TorusKnotBufferGeometry:Jo,TubeGeometry:Zo,TubeBufferGeometry:Zo,WireframeGeometry:Qo});class $o extends We{constructor(t){super(),this.type="ShadowMaterial",this.color=new Qe(0),this.transparent=!0,this.setValues(t)}copy(t){return super.copy(t),this.color.copy(t.color),this}}$o.prototype.isShadowMaterial=!0;class tl extends Xn{constructor(t){super(t),this.type="RawShaderMaterial"}}tl.prototype.isRawShaderMaterial=!0;class el extends We{constructor(t){super(),this.defines={STANDARD:""},this.type="MeshStandardMaterial",this.color=new Qe(16777215),this.roughness=1,this.metalness=0,this.map=null,this.lightMap=null,this.lightMapIntensity=1,this.aoMap=null,this.aoMapIntensity=1,this.emissive=new Qe(0),this.emissiveIntensity=1,this.emissiveMap=null,this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=0,this.normalScale=new vt(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.roughnessMap=null,this.metalnessMap=null,this.alphaMap=null,this.envMap=null,this.envMapIntensity=1,this.refractionRatio=.98,this.wireframe=!1,this.wireframeLinewidth=1,this.wireframeLinecap="round",this.wireframeLinejoin="round",this.morphTargets=!1,this.morphNormals=!1,this.flatShading=!1,this.vertexTangents=!1,this.setValues(t)}copy(t){return super.copy(t),this.defines={STANDARD:""},this.color.copy(t.color),this.roughness=t.roughness,this.metalness=t.metalness,this.map=t.map,this.lightMap=t.lightMap,this.lightMapIntensity=t.lightMapIntensity,this.aoMap=t.aoMap,this.aoMapIntensity=t.aoMapIntensity,this.emissive.copy(t.emissive),this.emissiveMap=t.emissiveMap,this.emissiveIntensity=t.emissiveIntensity,this.bumpMap=t.bumpMap,this.bumpScale=t.bumpScale,this.normalMap=t.normalMap,this.normalMapType=t.normalMapType,this.normalScale.copy(t.normalScale),this.displacementMap=t.displacementMap,this.displacementScale=t.displacementScale,this.displacementBias=t.displacementBias,this.roughnessMap=t.roughnessMap,this.metalnessMap=t.metalnessMap,this.alphaMap=t.alphaMap,this.envMap=t.envMap,this.envMapIntensity=t.envMapIntensity,this.refractionRatio=t.refractionRatio,this.wireframe=t.wireframe,this.wireframeLinewidth=t.wireframeLinewidth,this.wireframeLinecap=t.wireframeLinecap,this.wireframeLinejoin=t.wireframeLinejoin,this.morphTargets=t.morphTargets,this.morphNormals=t.morphNormals,this.flatShading=t.flatShading,this.vertexTangents=t.vertexTangents,this}}el.prototype.isMeshStandardMaterial=!0;class nl extends el{constructor(t){super(),this.defines={STANDARD:"",PHYSICAL:""},this.type="MeshPhysicalMaterial",this.clearcoat=0,this.clearcoatMap=null,this.clearcoatRoughness=0,this.clearcoatRoughnessMap=null,this.clearcoatNormalScale=new vt(1,1),this.clearcoatNormalMap=null,this.reflectivity=.5,Object.defineProperty(this,"ior",{get:function(){return(1+.4*this.reflectivity)/(1-.4*this.reflectivity)},set:function(t){this.reflectivity=ht(2.5*(t-1)/(t+1),0,1)}}),this.sheen=null,this.transmission=0,this.transmissionMap=null,this.thickness=.01,this.thicknessMap=null,this.attenuationDistance=0,this.attenuationColor=new Qe(1,1,1),this.setValues(t)}copy(t){return super.copy(t),this.defines={STANDARD:"",PHYSICAL:""},this.clearcoat=t.clearcoat,this.clearcoatMap=t.clearcoatMap,this.clearcoatRoughness=t.clearcoatRoughness,this.clearcoatRoughnessMap=t.clearcoatRoughnessMap,this.clearcoatNormalMap=t.clearcoatNormalMap,this.clearcoatNormalScale.copy(t.clearcoatNormalScale),this.reflectivity=t.reflectivity,t.sheen?this.sheen=(this.sheen||new Qe).copy(t.sheen):this.sheen=null,this.transmission=t.transmission,this.transmissionMap=t.transmissionMap,this.thickness=t.thickness,this.thicknessMap=t.thicknessMap,this.attenuationDistance=t.attenuationDistance,this.attenuationColor.copy(t.attenuationColor),this}}nl.prototype.isMeshPhysicalMaterial=!0;class il extends We{constructor(t){super(),this.type="MeshPhongMaterial",this.color=new Qe(16777215),this.specular=new Qe(1118481),this.shininess=30,this.map=null,this.lightMap=null,this.lightMapIntensity=1,this.aoMap=null,this.aoMapIntensity=1,this.emissive=new Qe(0),this.emissiveIntensity=1,this.emissiveMap=null,this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=0,this.normalScale=new vt(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.specularMap=null,this.alphaMap=null,this.envMap=null,this.combine=0,this.reflectivity=1,this.refractionRatio=.98,this.wireframe=!1,this.wireframeLinewidth=1,this.wireframeLinecap="round",this.wireframeLinejoin="round",this.morphTargets=!1,this.morphNormals=!1,this.flatShading=!1,this.setValues(t)}copy(t){return super.copy(t),this.color.copy(t.color),this.specular.copy(t.specular),this.shininess=t.shininess,this.map=t.map,this.lightMap=t.lightMap,this.lightMapIntensity=t.lightMapIntensity,this.aoMap=t.aoMap,this.aoMapIntensity=t.aoMapIntensity,this.emissive.copy(t.emissive),this.emissiveMap=t.emissiveMap,this.emissiveIntensity=t.emissiveIntensity,this.bumpMap=t.bumpMap,this.bumpScale=t.bumpScale,this.normalMap=t.normalMap,this.normalMapType=t.normalMapType,this.normalScale.copy(t.normalScale),this.displacementMap=t.displacementMap,this.displacementScale=t.displacementScale,this.displacementBias=t.displacementBias,this.specularMap=t.specularMap,this.alphaMap=t.alphaMap,this.envMap=t.envMap,this.combine=t.combine,this.reflectivity=t.reflectivity,this.refractionRatio=t.refractionRatio,this.wireframe=t.wireframe,this.wireframeLinewidth=t.wireframeLinewidth,this.wireframeLinecap=t.wireframeLinecap,this.wireframeLinejoin=t.wireframeLinejoin,this.morphTargets=t.morphTargets,this.morphNormals=t.morphNormals,this.flatShading=t.flatShading,this}}il.prototype.isMeshPhongMaterial=!0;class rl extends We{constructor(t){super(),this.defines={TOON:""},this.type="MeshToonMaterial",this.color=new Qe(16777215),this.map=null,this.gradientMap=null,this.lightMap=null,this.lightMapIntensity=1,this.aoMap=null,this.aoMapIntensity=1,this.emissive=new Qe(0),this.emissiveIntensity=1,this.emissiveMap=null,this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=0,this.normalScale=new vt(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.alphaMap=null,this.wireframe=!1,this.wireframeLinewidth=1,this.wireframeLinecap="round",this.wireframeLinejoin="round",this.morphTargets=!1,this.morphNormals=!1,this.setValues(t)}copy(t){return super.copy(t),this.color.copy(t.color),this.map=t.map,this.gradientMap=t.gradientMap,this.lightMap=t.lightMap,this.lightMapIntensity=t.lightMapIntensity,this.aoMap=t.aoMap,this.aoMapIntensity=t.aoMapIntensity,this.emissive.copy(t.emissive),this.emissiveMap=t.emissiveMap,this.emissiveIntensity=t.emissiveIntensity,this.bumpMap=t.bumpMap,this.bumpScale=t.bumpScale,this.normalMap=t.normalMap,this.normalMapType=t.normalMapType,this.normalScale.copy(t.normalScale),this.displacementMap=t.displacementMap,this.displacementScale=t.displacementScale,this.displacementBias=t.displacementBias,this.alphaMap=t.alphaMap,this.wireframe=t.wireframe,this.wireframeLinewidth=t.wireframeLinewidth,this.wireframeLinecap=t.wireframeLinecap,this.wireframeLinejoin=t.wireframeLinejoin,this.morphTargets=t.morphTargets,this.morphNormals=t.morphNormals,this}}rl.prototype.isMeshToonMaterial=!0;class sl extends We{constructor(t){super(),this.type="MeshNormalMaterial",this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=0,this.normalScale=new vt(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.wireframe=!1,this.wireframeLinewidth=1,this.fog=!1,this.morphTargets=!1,this.morphNormals=!1,this.flatShading=!1,this.setValues(t)}copy(t){return super.copy(t),this.bumpMap=t.bumpMap,this.bumpScale=t.bumpScale,this.normalMap=t.normalMap,this.normalMapType=t.normalMapType,this.normalScale.copy(t.normalScale),this.displacementMap=t.displacementMap,this.displacementScale=t.displacementScale,this.displacementBias=t.displacementBias,this.wireframe=t.wireframe,this.wireframeLinewidth=t.wireframeLinewidth,this.morphTargets=t.morphTargets,this.morphNormals=t.morphNormals,this.flatShading=t.flatShading,this}}sl.prototype.isMeshNormalMaterial=!0;class al extends We{constructor(t){super(),this.type="MeshLambertMaterial",this.color=new Qe(16777215),this.map=null,this.lightMap=null,this.lightMapIntensity=1,this.aoMap=null,this.aoMapIntensity=1,this.emissive=new Qe(0),this.emissiveIntensity=1,this.emissiveMap=null,this.specularMap=null,this.alphaMap=null,this.envMap=null,this.combine=0,this.reflectivity=1,this.refractionRatio=.98,this.wireframe=!1,this.wireframeLinewidth=1,this.wireframeLinecap="round",this.wireframeLinejoin="round",this.morphTargets=!1,this.morphNormals=!1,this.setValues(t)}copy(t){return super.copy(t),this.color.copy(t.color),this.map=t.map,this.lightMap=t.lightMap,this.lightMapIntensity=t.lightMapIntensity,this.aoMap=t.aoMap,this.aoMapIntensity=t.aoMapIntensity,this.emissive.copy(t.emissive),this.emissiveMap=t.emissiveMap,this.emissiveIntensity=t.emissiveIntensity,this.specularMap=t.specularMap,this.alphaMap=t.alphaMap,this.envMap=t.envMap,this.combine=t.combine,this.reflectivity=t.reflectivity,this.refractionRatio=t.refractionRatio,this.wireframe=t.wireframe,this.wireframeLinewidth=t.wireframeLinewidth,this.wireframeLinecap=t.wireframeLinecap,this.wireframeLinejoin=t.wireframeLinejoin,this.morphTargets=t.morphTargets,this.morphNormals=t.morphNormals,this}}al.prototype.isMeshLambertMaterial=!0;class ol extends We{constructor(t){super(),this.defines={MATCAP:""},this.type="MeshMatcapMaterial",this.color=new Qe(16777215),this.matcap=null,this.map=null,this.bumpMap=null,this.bumpScale=1,this.normalMap=null,this.normalMapType=0,this.normalScale=new vt(1,1),this.displacementMap=null,this.displacementScale=1,this.displacementBias=0,this.alphaMap=null,this.morphTargets=!1,this.morphNormals=!1,this.flatShading=!1,this.setValues(t)}copy(t){return super.copy(t),this.defines={MATCAP:""},this.color.copy(t.color),this.matcap=t.matcap,this.map=t.map,this.bumpMap=t.bumpMap,this.bumpScale=t.bumpScale,this.normalMap=t.normalMap,this.normalMapType=t.normalMapType,this.normalScale.copy(t.normalScale),this.displacementMap=t.displacementMap,this.displacementScale=t.displacementScale,this.displacementBias=t.displacementBias,this.alphaMap=t.alphaMap,this.morphTargets=t.morphTargets,this.morphNormals=t.morphNormals,this.flatShading=t.flatShading,this}}ol.prototype.isMeshMatcapMaterial=!0;class ll extends ha{constructor(t){super(),this.type="LineDashedMaterial",this.scale=1,this.dashSize=3,this.gapSize=1,this.setValues(t)}copy(t){return super.copy(t),this.scale=t.scale,this.dashSize=t.dashSize,this.gapSize=t.gapSize,this}}ll.prototype.isLineDashedMaterial=!0;var cl=Object.freeze({__proto__:null,ShadowMaterial:$o,SpriteMaterial:Rs,RawShaderMaterial:tl,ShaderMaterial:Xn,PointsMaterial:ba,MeshPhysicalMaterial:nl,MeshStandardMaterial:el,MeshPhongMaterial:il,MeshToonMaterial:rl,MeshNormalMaterial:sl,MeshLambertMaterial:al,MeshDepthMaterial:cs,MeshDistanceMaterial:hs,MeshBasicMaterial:Ke,MeshMatcapMaterial:ol,LineDashedMaterial:ll,LineBasicMaterial:ha,Material:We});const hl={arraySlice:function(t,e,n){return hl.isTypedArray(t)?new t.constructor(t.subarray(e,void 0!==n?n:t.length)):t.slice(e,n)},convertArray:function(t,e,n){return!t||!n&&t.constructor===e?t:"number"==typeof e.BYTES_PER_ELEMENT?new e(t):Array.prototype.slice.call(t)},isTypedArray:function(t){return ArrayBuffer.isView(t)&&!(t instanceof DataView)},getKeyframeOrder:function(t){const e=t.length,n=new Array(e);for(let t=0;t!==e;++t)n[t]=t;return n.sort((function(e,n){return t[e]-t[n]})),n},sortedArray:function(t,e,n){const i=t.length,r=new t.constructor(i);for(let s=0,a=0;a!==i;++s){const i=n[s]*e;for(let n=0;n!==e;++n)r[a++]=t[i+n]}return r},flattenJSON:function(t,e,n,i){let r=1,s=t[0];for(;void 0!==s&&void 0===s[i];)s=t[r++];if(void 0===s)return;let a=s[i];if(void 0!==a)if(Array.isArray(a))do{a=s[i],void 0!==a&&(e.push(s.time),n.push.apply(n,a)),s=t[r++]}while(void 0!==s);else if(void 0!==a.toArray)do{a=s[i],void 0!==a&&(e.push(s.time),a.toArray(n,n.length)),s=t[r++]}while(void 0!==s);else do{a=s[i],void 0!==a&&(e.push(s.time),n.push(a)),s=t[r++]}while(void 0!==s)},subclip:function(t,e,n,i,r=30){const s=t.clone();s.name=e;const a=[];for(let t=0;t<s.tracks.length;++t){const e=s.tracks[t],o=e.getValueSize(),l=[],c=[];for(let t=0;t<e.times.length;++t){const s=e.times[t]*r;if(!(s<n||s>=i)){l.push(e.times[t]);for(let n=0;n<o;++n)c.push(e.values[t*o+n])}}0!==l.length&&(e.times=hl.convertArray(l,e.times.constructor),e.values=hl.convertArray(c,e.values.constructor),a.push(e))}s.tracks=a;let o=1/0;for(let t=0;t<s.tracks.length;++t)o>s.tracks[t].times[0]&&(o=s.tracks[t].times[0]);for(let t=0;t<s.tracks.length;++t)s.tracks[t].shift(-1*o);return s.resetDuration(),s},makeClipAdditive:function(t,e=0,n=t,i=30){i<=0&&(i=30);const r=n.tracks.length,s=e/i;for(let e=0;e<r;++e){const i=n.tracks[e],r=i.ValueTypeName;if("bool"===r||"string"===r)continue;const a=t.tracks.find((function(t){return t.name===i.name&&t.ValueTypeName===r}));if(void 0===a)continue;let o=0;const l=i.getValueSize();i.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline&&(o=l/3);let c=0;const h=a.getValueSize();a.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline&&(c=h/3);const u=i.times.length-1;let d;if(s<=i.times[0]){const t=o,e=l-o;d=hl.arraySlice(i.values,t,e)}else if(s>=i.times[u]){const t=u*l+o,e=t+l-o;d=hl.arraySlice(i.values,t,e)}else{const t=i.createInterpolant(),e=o,n=l-o;t.evaluate(s),d=hl.arraySlice(t.resultBuffer,e,n)}if("quaternion"===r){(new Lt).fromArray(d).normalize().conjugate().toArray(d)}const p=a.times.length;for(let t=0;t<p;++t){const e=t*h+c;if("quaternion"===r)Lt.multiplyQuaternionsFlat(a.values,e,d,0,a.values,e);else{const t=h-2*c;for(let n=0;n<t;++n)a.values[e+n]-=d[n]}}}return t.blendMode=q,t}};class ul{constructor(t,e,n,i){this.parameterPositions=t,this._cachedIndex=0,this.resultBuffer=void 0!==i?i:new e.constructor(n),this.sampleValues=e,this.valueSize=n,this.settings=null,this.DefaultSettings_={}}evaluate(t){const e=this.parameterPositions;let n=this._cachedIndex,i=e[n],r=e[n-1];t:{e:{let s;n:{i:if(!(t<i)){for(let s=n+2;;){if(void 0===i){if(t<r)break i;return n=e.length,this._cachedIndex=n,this.afterEnd_(n-1,t,r)}if(n===s)break;if(r=i,i=e[++n],t<i)break e}s=e.length;break n}if(t>=r)break t;{const a=e[1];t<a&&(n=2,r=a);for(let s=n-2;;){if(void 0===r)return this._cachedIndex=0,this.beforeStart_(0,t,i);if(n===s)break;if(i=r,r=e[--n-1],t>=r)break e}s=n,n=0}}for(;n<s;){const i=n+s>>>1;t<e[i]?s=i:n=i+1}if(i=e[n],r=e[n-1],void 0===r)return this._cachedIndex=0,this.beforeStart_(0,t,i);if(void 0===i)return n=e.length,this._cachedIndex=n,this.afterEnd_(n-1,r,t)}this._cachedIndex=n,this.intervalChanged_(n,r,i)}return this.interpolate_(n,r,t,i)}getSettings_(){return this.settings||this.DefaultSettings_}copySampleValue_(t){const e=this.resultBuffer,n=this.sampleValues,i=this.valueSize,r=t*i;for(let t=0;t!==i;++t)e[t]=n[r+t];return e}interpolate_(){throw new Error("call to abstract method")}intervalChanged_(){}}ul.prototype.beforeStart_=ul.prototype.copySampleValue_,ul.prototype.afterEnd_=ul.prototype.copySampleValue_;class dl extends ul{constructor(t,e,n,i){super(t,e,n,i),this._weightPrev=-0,this._offsetPrev=-0,this._weightNext=-0,this._offsetNext=-0,this.DefaultSettings_={endingStart:k,endingEnd:k}}intervalChanged_(t,e,n){const i=this.parameterPositions;let r=t-2,s=t+1,a=i[r],o=i[s];if(void 0===a)switch(this.getSettings_().endingStart){case V:r=t,a=2*e-n;break;case W:r=i.length-2,a=e+i[r]-i[r+1];break;default:r=t,a=n}if(void 0===o)switch(this.getSettings_().endingEnd){case V:s=t,o=2*n-e;break;case W:s=1,o=n+i[1]-i[0];break;default:s=t-1,o=e}const l=.5*(n-e),c=this.valueSize;this._weightPrev=l/(e-a),this._weightNext=l/(o-n),this._offsetPrev=r*c,this._offsetNext=s*c}interpolate_(t,e,n,i){const r=this.resultBuffer,s=this.sampleValues,a=this.valueSize,o=t*a,l=o-a,c=this._offsetPrev,h=this._offsetNext,u=this._weightPrev,d=this._weightNext,p=(n-e)/(i-e),m=p*p,f=m*p,g=-u*f+2*u*m-u*p,v=(1+u)*f+(-1.5-2*u)*m+(-.5+u)*p+1,y=(-1-d)*f+(1.5+d)*m+.5*p,x=d*f-d*m;for(let t=0;t!==a;++t)r[t]=g*s[c+t]+v*s[l+t]+y*s[o+t]+x*s[h+t];return r}}class pl extends ul{constructor(t,e,n,i){super(t,e,n,i)}interpolate_(t,e,n,i){const r=this.resultBuffer,s=this.sampleValues,a=this.valueSize,o=t*a,l=o-a,c=(n-e)/(i-e),h=1-c;for(let t=0;t!==a;++t)r[t]=s[l+t]*h+s[o+t]*c;return r}}class ml extends ul{constructor(t,e,n,i){super(t,e,n,i)}interpolate_(t){return this.copySampleValue_(t-1)}}class fl{constructor(t,e,n,i){if(void 0===t)throw new Error("THREE.KeyframeTrack: track name is undefined");if(void 0===e||0===e.length)throw new Error("THREE.KeyframeTrack: no keyframes in track named "+t);this.name=t,this.times=hl.convertArray(e,this.TimeBufferType),this.values=hl.convertArray(n,this.ValueBufferType),this.setInterpolation(i||this.DefaultInterpolation)}static toJSON(t){const e=t.constructor;let n;if(e.toJSON!==this.toJSON)n=e.toJSON(t);else{n={name:t.name,times:hl.convertArray(t.times,Array),values:hl.convertArray(t.values,Array)};const e=t.getInterpolation();e!==t.DefaultInterpolation&&(n.interpolation=e)}return n.type=t.ValueTypeName,n}InterpolantFactoryMethodDiscrete(t){return new ml(this.times,this.values,this.getValueSize(),t)}InterpolantFactoryMethodLinear(t){return new pl(this.times,this.values,this.getValueSize(),t)}InterpolantFactoryMethodSmooth(t){return new dl(this.times,this.values,this.getValueSize(),t)}setInterpolation(t){let e;switch(t){case H:e=this.InterpolantFactoryMethodDiscrete;break;case U:e=this.InterpolantFactoryMethodLinear;break;case G:e=this.InterpolantFactoryMethodSmooth}if(void 0===e){const e="unsupported interpolation for "+this.ValueTypeName+" keyframe track named "+this.name;if(void 0===this.createInterpolant){if(t===this.DefaultInterpolation)throw new Error(e);this.setInterpolation(this.DefaultInterpolation)}return console.warn("THREE.KeyframeTrack:",e),this}return this.createInterpolant=e,this}getInterpolation(){switch(this.createInterpolant){case this.InterpolantFactoryMethodDiscrete:return H;case this.InterpolantFactoryMethodLinear:return U;case this.InterpolantFactoryMethodSmooth:return G}}getValueSize(){return this.values.length/this.times.length}shift(t){if(0!==t){const e=this.times;for(let n=0,i=e.length;n!==i;++n)e[n]+=t}return this}scale(t){if(1!==t){const e=this.times;for(let n=0,i=e.length;n!==i;++n)e[n]*=t}return this}trim(t,e){const n=this.times,i=n.length;let r=0,s=i-1;for(;r!==i&&n[r]<t;)++r;for(;-1!==s&&n[s]>e;)--s;if(++s,0!==r||s!==i){r>=s&&(s=Math.max(s,1),r=s-1);const t=this.getValueSize();this.times=hl.arraySlice(n,r,s),this.values=hl.arraySlice(this.values,r*t,s*t)}return this}validate(){let t=!0;const e=this.getValueSize();e-Math.floor(e)!=0&&(console.error("THREE.KeyframeTrack: Invalid value size in track.",this),t=!1);const n=this.times,i=this.values,r=n.length;0===r&&(console.error("THREE.KeyframeTrack: Track is empty.",this),t=!1);let s=null;for(let e=0;e!==r;e++){const i=n[e];if("number"==typeof i&&isNaN(i)){console.error("THREE.KeyframeTrack: Time is not a valid number.",this,e,i),t=!1;break}if(null!==s&&s>i){console.error("THREE.KeyframeTrack: Out of order keys.",this,e,i,s),t=!1;break}s=i}if(void 0!==i&&hl.isTypedArray(i))for(let e=0,n=i.length;e!==n;++e){const n=i[e];if(isNaN(n)){console.error("THREE.KeyframeTrack: Value is not a valid number.",this,e,n),t=!1;break}}return t}optimize(){const t=hl.arraySlice(this.times),e=hl.arraySlice(this.values),n=this.getValueSize(),i=this.getInterpolation()===G,r=t.length-1;let s=1;for(let a=1;a<r;++a){let r=!1;const o=t[a];if(o!==t[a+1]&&(1!==a||o!==t[0]))if(i)r=!0;else{const t=a*n,i=t-n,s=t+n;for(let a=0;a!==n;++a){const n=e[t+a];if(n!==e[i+a]||n!==e[s+a]){r=!0;break}}}if(r){if(a!==s){t[s]=t[a];const i=a*n,r=s*n;for(let t=0;t!==n;++t)e[r+t]=e[i+t]}++s}}if(r>0){t[s]=t[r];for(let t=r*n,i=s*n,a=0;a!==n;++a)e[i+a]=e[t+a];++s}return s!==t.length?(this.times=hl.arraySlice(t,0,s),this.values=hl.arraySlice(e,0,s*n)):(this.times=t,this.values=e),this}clone(){const t=hl.arraySlice(this.times,0),e=hl.arraySlice(this.values,0),n=new(0,this.constructor)(this.name,t,e);return n.createInterpolant=this.createInterpolant,n}}fl.prototype.TimeBufferType=Float32Array,fl.prototype.ValueBufferType=Float32Array,fl.prototype.DefaultInterpolation=U;class gl extends fl{}gl.prototype.ValueTypeName="bool",gl.prototype.ValueBufferType=Array,gl.prototype.DefaultInterpolation=H,gl.prototype.InterpolantFactoryMethodLinear=void 0,gl.prototype.InterpolantFactoryMethodSmooth=void 0;class vl extends fl{}vl.prototype.ValueTypeName="color";class yl extends fl{}yl.prototype.ValueTypeName="number";class xl extends ul{constructor(t,e,n,i){super(t,e,n,i)}interpolate_(t,e,n,i){const r=this.resultBuffer,s=this.sampleValues,a=this.valueSize,o=(n-e)/(i-e);let l=t*a;for(let t=l+a;l!==t;l+=4)Lt.slerpFlat(r,0,s,l-a,s,l,o);return r}}class _l extends fl{InterpolantFactoryMethodLinear(t){return new xl(this.times,this.values,this.getValueSize(),t)}}_l.prototype.ValueTypeName="quaternion",_l.prototype.DefaultInterpolation=U,_l.prototype.InterpolantFactoryMethodSmooth=void 0;class bl extends fl{}bl.prototype.ValueTypeName="string",bl.prototype.ValueBufferType=Array,bl.prototype.DefaultInterpolation=H,bl.prototype.InterpolantFactoryMethodLinear=void 0,bl.prototype.InterpolantFactoryMethodSmooth=void 0;class Ml extends fl{}Ml.prototype.ValueTypeName="vector";class wl{constructor(t,e=-1,n,i=2500){this.name=t,this.tracks=n,this.duration=e,this.blendMode=i,this.uuid=ct(),this.duration<0&&this.resetDuration()}static parse(t){const e=[],n=t.tracks,i=1/(t.fps||1);for(let t=0,r=n.length;t!==r;++t)e.push(Sl(n[t]).scale(i));const r=new this(t.name,t.duration,e,t.blendMode);return r.uuid=t.uuid,r}static toJSON(t){const e=[],n=t.tracks,i={name:t.name,duration:t.duration,tracks:e,uuid:t.uuid,blendMode:t.blendMode};for(let t=0,i=n.length;t!==i;++t)e.push(fl.toJSON(n[t]));return i}static CreateFromMorphTargetSequence(t,e,n,i){const r=e.length,s=[];for(let t=0;t<r;t++){let a=[],o=[];a.push((t+r-1)%r,t,(t+1)%r),o.push(0,1,0);const 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o=t.length||-1;const l=t.hierarchy||[];for(let t=0;t<l.length;t++){const r=l[t].keys;if(r&&0!==r.length)if(r[0].morphTargets){const t={};let e;for(e=0;e<r.length;e++)if(r[e].morphTargets)for(let n=0;n<r[e].morphTargets.length;n++)t[r[e].morphTargets[n]]=-1;for(const n in t){const t=[],s=[];for(let i=0;i!==r[e].morphTargets.length;++i){const i=r[e];t.push(i.time),s.push(i.morphTarget===n?1:0)}i.push(new yl(".morphTargetInfluence["+n+"]",t,s))}o=t.length*(s||1)}else{const s=".bones["+e[t].name+"]";n(Ml,s+".position",r,"pos",i),n(_l,s+".quaternion",r,"rot",i),n(Ml,s+".scale",r,"scl",i)}}if(0===i.length)return null;return new this(r,o,i,a)}resetDuration(){let t=0;for(let e=0,n=this.tracks.length;e!==n;++e){const n=this.tracks[e];t=Math.max(t,n.times[n.times.length-1])}return this.duration=t,this}trim(){for(let t=0;t<this.tracks.length;t++)this.tracks[t].trim(0,this.duration);return this}validate(){let t=!0;for(let e=0;e<this.tracks.length;e++)t=t&&this.tracks[e].validate();return t}optimize(){for(let t=0;t<this.tracks.length;t++)this.tracks[t].optimize();return this}clone(){const t=[];for(let e=0;e<this.tracks.length;e++)t.push(this.tracks[e].clone());return new this.constructor(this.name,this.duration,t,this.blendMode)}toJSON(){return this.constructor.toJSON(this)}}function Sl(t){if(void 0===t.type)throw new Error("THREE.KeyframeTrack: track type undefined, can not parse");const e=function(t){switch(t.toLowerCase()){case"scalar":case"double":case"float":case"number":case"integer":return yl;case"vector":case"vector2":case"vector3":case"vector4":return Ml;case"color":return vl;case"quaternion":return _l;case"bool":case"boolean":return gl;case"string":return bl}throw new Error("THREE.KeyframeTrack: Unsupported typeName: "+t)}(t.type);if(void 0===t.times){const e=[],n=[];hl.flattenJSON(t.keys,e,n,"value"),t.times=e,t.values=n}return void 0!==e.parse?e.parse(t):new e(t.name,t.times,t.values,t.interpolation)}const Tl={enabled:!1,files:{},add:function(t,e){!1!==this.enabled&&(this.files[t]=e)},get:function(t){if(!1!==this.enabled)return this.files[t]},remove:function(t){delete this.files[t]},clear:function(){this.files={}}};class El{constructor(t,e,n){const i=this;let r,s=!1,a=0,o=0;const l=[];this.onStart=void 0,this.onLoad=t,this.onProgress=e,this.onError=n,this.itemStart=function(t){o++,!1===s&&void 0!==i.onStart&&i.onStart(t,a,o),s=!0},this.itemEnd=function(t){a++,void 0!==i.onProgress&&i.onProgress(t,a,o),a===o&&(s=!1,void 0!==i.onLoad&&i.onLoad())},this.itemError=function(t){void 0!==i.onError&&i.onError(t)},this.resolveURL=function(t){return r?r(t):t},this.setURLModifier=function(t){return r=t,this},this.addHandler=function(t,e){return l.push(t,e),this},this.removeHandler=function(t){const e=l.indexOf(t);return-1!==e&&l.splice(e,2),this},this.getHandler=function(t){for(let e=0,n=l.length;e<n;e+=2){const n=l[e],i=l[e+1];if(n.global&&(n.lastIndex=0),n.test(t))return i}return null}}}const Al=new El;class Ll{constructor(t){this.manager=void 0!==t?t:Al,this.crossOrigin="anonymous",this.withCredentials=!1,this.path="",this.resourcePath="",this.requestHeader={}}load(){}loadAsync(t,e){const n=this;return new Promise((function(i,r){n.load(t,i,e,r)}))}parse(){}setCrossOrigin(t){return this.crossOrigin=t,this}setWithCredentials(t){return this.withCredentials=t,this}setPath(t){return this.path=t,this}setResourcePath(t){return this.resourcePath=t,this}setRequestHeader(t){return this.requestHeader=t,this}}const Rl={};class Cl extends Ll{constructor(t){super(t)}load(t,e,n,i){void 0===t&&(t=""),void 0!==this.path&&(t=this.path+t),t=this.manager.resolveURL(t);const r=this,s=Tl.get(t);if(void 0!==s)return r.manager.itemStart(t),setTimeout((function(){e&&e(s),r.manager.itemEnd(t)}),0),s;if(void 0!==Rl[t])return void Rl[t].push({onLoad:e,onProgress:n,onError:i});const a=t.match(/^data:(.*?)(;base64)?,(.*)$/);let o;if(a){const n=a[1],s=!!a[2];let 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this.responseType=t,this}setMimeType(t){return this.mimeType=t,this}}class Pl extends Ll{constructor(t){super(t)}load(t,e,n,i){void 0!==this.path&&(t=this.path+t),t=this.manager.resolveURL(t);const r=this,s=Tl.get(t);if(void 0!==s)return r.manager.itemStart(t),setTimeout((function(){e&&e(s),r.manager.itemEnd(t)}),0),s;const a=document.createElementNS("http://www.w3.org/1999/xhtml","img");function o(){a.removeEventListener("load",o,!1),a.removeEventListener("error",l,!1),Tl.add(t,this),e&&e(this),r.manager.itemEnd(t)}function l(e){a.removeEventListener("load",o,!1),a.removeEventListener("error",l,!1),i&&i(e),r.manager.itemError(t),r.manager.itemEnd(t)}return a.addEventListener("load",o,!1),a.addEventListener("error",l,!1),"data:"!==t.substr(0,5)&&void 0!==this.crossOrigin&&(a.crossOrigin=this.crossOrigin),r.manager.itemStart(t),a.src=t,a}}class Dl extends Ll{constructor(t){super(t)}load(t,e,n,i){const r=new Kn,s=new Pl(this.manager);s.setCrossOrigin(this.crossOrigin),s.setPath(this.path);let a=0;function o(n){s.load(t[n],(function(t){r.images[n]=t,a++,6===a&&(r.needsUpdate=!0,e&&e(r))}),void 0,i)}for(let e=0;e<t.length;++e)o(e);return r}}class Il extends Ll{constructor(t){super(t)}load(t,e,n,i){const r=this,s=new ea,a=new Cl(this.manager);return a.setResponseType("arraybuffer"),a.setRequestHeader(this.requestHeader),a.setPath(this.path),a.setWithCredentials(r.withCredentials),a.load(t,(function(t){const n=r.parse(t);n&&(void 0!==n.image?s.image=n.image:void 0!==n.data&&(s.image.width=n.width,s.image.height=n.height,s.image.data=n.data),s.wrapS=void 0!==n.wrapS?n.wrapS:u,s.wrapT=void 0!==n.wrapT?n.wrapT:u,s.magFilter=void 0!==n.magFilter?n.magFilter:g,s.minFilter=void 0!==n.minFilter?n.minFilter:g,s.anisotropy=void 0!==n.anisotropy?n.anisotropy:1,void 0!==n.encoding&&(s.encoding=n.encoding),void 0!==n.flipY&&(s.flipY=n.flipY),void 0!==n.format&&(s.format=n.format),void 0!==n.type&&(s.type=n.type),void 0!==n.mipmaps&&(s.mipmaps=n.mipmaps,s.minFilter=y),1===n.mipmapCount&&(s.minFilter=g),void 0!==n.generateMipmaps&&(s.generateMipmaps=n.generateMipmaps),s.needsUpdate=!0,e&&e(s,n))}),n,i),s}}class Nl extends Ll{constructor(t){super(t)}load(t,e,n,i){const r=new Mt,s=new Pl(this.manager);return s.setCrossOrigin(this.crossOrigin),s.setPath(this.path),s.load(t,(function(n){r.image=n;const i=t.search(/\.jpe?g($|\?)/i)>0||0===t.search(/^data\:image\/jpeg/);r.format=i?T:E,r.needsUpdate=!0,void 0!==e&&e(r)}),n,i),r}}class Bl extends ka{constructor(){super(),this.type="CurvePath",this.curves=[],this.autoClose=!1}add(t){this.curves.push(t)}closePath(){const t=this.curves[0].getPoint(0),e=this.curves[this.curves.length-1].getPoint(1);t.equals(e)||this.curves.push(new no(e,t))}getPoint(t){const e=t*this.getLength(),n=this.getCurveLengths();let i=0;for(;i<n.length;){if(n[i]>=e){const t=n[i]-e,r=this.curves[i],s=r.getLength(),a=0===s?0:1-t/s;return r.getPointAt(a)}i++}return null}getLength(){const t=this.getCurveLengths();return t[t.length-1]}updateArcLengths(){this.needsUpdate=!0,this.cacheLengths=null,this.getCurveLengths()}getCurveLengths(){if(this.cacheLengths&&this.cacheLengths.length===this.curves.length)return this.cacheLengths;const t=[];let e=0;for(let n=0,i=this.curves.length;n<i;n++)e+=this.curves[n].getLength(),t.push(e);return this.cacheLengths=t,t}getSpacedPoints(t=40){const e=[];for(let n=0;n<=t;n++)e.push(this.getPoint(n/t));return this.autoClose&&e.push(e[0]),e}getPoints(t=12){const e=[];let n;for(let i=0,r=this.curves;i<r.length;i++){const s=r[i],a=s&&s.isEllipseCurve?2*t:s&&(s.isLineCurve||s.isLineCurve3)?1:s&&s.isSplineCurve?t*s.points.length:t,o=s.getPoints(a);for(let t=0;t<o.length;t++){const i=o[t];n&&n.equals(i)||(e.push(i),n=i)}}return this.autoClose&&e.length>1&&!e[e.length-1].equals(e[0])&&e.push(e[0]),e}copy(t){super.copy(t),this.curves=[];for(let e=0,n=t.curves.length;e<n;e++){const n=t.curves[e];this.curves.push(n.clone())}return this.autoClose=t.autoClose,this}toJSON(){const t=super.toJSON();t.autoClose=this.autoClose,t.curves=[];for(let e=0,n=this.curves.length;e<n;e++){const n=this.curves[e];t.curves.push(n.toJSON())}return t}fromJSON(t){super.fromJSON(t),this.autoClose=t.autoClose,this.curves=[];for(let e=0,n=t.curves.length;e<n;e++){const n=t.curves[e];this.curves.push((new oo[n.type]).fromJSON(n))}return this}}class zl extends Bl{constructor(t){super(),this.type="Path",this.currentPoint=new vt,t&&this.setFromPoints(t)}setFromPoints(t){this.moveTo(t[0].x,t[0].y);for(let e=1,n=t.length;e<n;e++)this.lineTo(t[e].x,t[e].y);return this}moveTo(t,e){return this.currentPoint.set(t,e),this}lineTo(t,e){const n=new no(this.currentPoint.clone(),new vt(t,e));return this.curves.push(n),this.currentPoint.set(t,e),this}quadraticCurveTo(t,e,n,i){const r=new ro(this.currentPoint.clone(),new vt(t,e),new vt(n,i));return this.curves.push(r),this.currentPoint.set(n,i),this}bezierCurveTo(t,e,n,i,r,s){const a=new to(this.currentPoint.clone(),new vt(t,e),new vt(n,i),new vt(r,s));return this.curves.push(a),this.currentPoint.set(r,s),this}splineThru(t){const e=[this.currentPoint.clone()].concat(t),n=new ao(e);return this.curves.push(n),this.currentPoint.copy(t[t.length-1]),this}arc(t,e,n,i,r,s){const a=this.currentPoint.x,o=this.currentPoint.y;return this.absarc(t+a,e+o,n,i,r,s),this}absarc(t,e,n,i,r,s){return this.absellipse(t,e,n,n,i,r,s),this}ellipse(t,e,n,i,r,s,a,o){const l=this.currentPoint.x,c=this.currentPoint.y;return this.absellipse(t+l,e+c,n,i,r,s,a,o),this}absellipse(t,e,n,i,r,s,a,o){const l=new Va(t,e,n,i,r,s,a,o);if(this.curves.length>0){const t=l.getPoint(0);t.equals(this.currentPoint)||this.lineTo(t.x,t.y)}this.curves.push(l);const c=l.getPoint(1);return this.currentPoint.copy(c),this}copy(t){return super.copy(t),this.currentPoint.copy(t.currentPoint),this}toJSON(){const t=super.toJSON();return t.currentPoint=this.currentPoint.toArray(),t}fromJSON(t){return super.fromJSON(t),this.currentPoint.fromArray(t.currentPoint),this}}class Fl extends zl{constructor(t){super(t),this.uuid=ct(),this.type="Shape",this.holes=[]}getPointsHoles(t){const e=[];for(let n=0,i=this.holes.length;n<i;n++)e[n]=this.holes[n].getPoints(t);return e}extractPoints(t){return{shape:this.getPoints(t),holes:this.getPointsHoles(t)}}copy(t){super.copy(t),this.holes=[];for(let e=0,n=t.holes.length;e<n;e++){const n=t.holes[e];this.holes.push(n.clone())}return this}toJSON(){const t=super.toJSON();t.uuid=this.uuid,t.holes=[];for(let e=0,n=this.holes.length;e<n;e++){const n=this.holes[e];t.holes.push(n.toJSON())}return t}fromJSON(t){super.fromJSON(t),this.uuid=t.uuid,this.holes=[];for(let e=0,n=t.holes.length;e<n;e++){const n=t.holes[e];this.holes.push((new zl).fromJSON(n))}return this}}class Ol extends Pe{constructor(t,e=1){super(),this.type="Light",this.color=new Qe(t),this.intensity=e}dispose(){}copy(t){return super.copy(t),this.color.copy(t.color),this.intensity=t.intensity,this}toJSON(t){const e=super.toJSON(t);return e.object.color=this.color.getHex(),e.object.intensity=this.intensity,void 0!==this.groundColor&&(e.object.groundColor=this.groundColor.getHex()),void 0!==this.distance&&(e.object.distance=this.distance),void 0!==this.angle&&(e.object.angle=this.angle),void 0!==this.decay&&(e.object.decay=this.decay),void 0!==this.penumbra&&(e.object.penumbra=this.penumbra),void 0!==this.shadow&&(e.object.shadow=this.shadow.toJSON()),e}}Ol.prototype.isLight=!0;class Hl extends Ol{constructor(t,e,n){super(t,n),this.type="HemisphereLight",this.position.copy(Pe.DefaultUp),this.updateMatrix(),this.groundColor=new Qe(e)}copy(t){return Ol.prototype.copy.call(this,t),this.groundColor.copy(t.groundColor),this}}Hl.prototype.isHemisphereLight=!0;const Ul=new ae,Gl=new Rt,kl=new Rt;class Vl{constructor(t){this.camera=t,this.bias=0,this.normalBias=0,this.radius=1,this.mapSize=new vt(512,512),this.map=null,this.mapPass=null,this.matrix=new ae,this.autoUpdate=!0,this.needsUpdate=!1,this._frustum=new ai,this._frameExtents=new vt(1,1),this._viewportCount=1,this._viewports=[new St(0,0,1,1)]}getViewportCount(){return this._viewportCount}getFrustum(){return this._frustum}updateMatrices(t){const e=this.camera,n=this.matrix;Gl.setFromMatrixPosition(t.matrixWorld),e.position.copy(Gl),kl.setFromMatrixPosition(t.target.matrixWorld),e.lookAt(kl),e.updateMatrixWorld(),Ul.multiplyMatrices(e.projectionMatrix,e.matrixWorldInverse),this._frustum.setFromProjectionMatrix(Ul),n.set(.5,0,0,.5,0,.5,0,.5,0,0,.5,.5,0,0,0,1),n.multiply(e.projectionMatrix),n.multiply(e.matrixWorldInverse)}getViewport(t){return this._viewports[t]}getFrameExtents(){return this._frameExtents}dispose(){this.map&&this.map.dispose(),this.mapPass&&this.mapPass.dispose()}copy(t){return this.camera=t.camera.clone(),this.bias=t.bias,this.radius=t.radius,this.mapSize.copy(t.mapSize),this}clone(){return(new this.constructor).copy(this)}toJSON(){const t={};return 0!==this.bias&&(t.bias=this.bias),0!==this.normalBias&&(t.normalBias=this.normalBias),1!==this.radius&&(t.radius=this.radius),512===this.mapSize.x&&512===this.mapSize.y||(t.mapSize=this.mapSize.toArray()),t.camera=this.camera.toJSON(!1).object,delete t.camera.matrix,t}}class Wl extends Vl{constructor(){super(new Jn(50,1,.5,500)),this.focus=1}updateMatrices(t){const e=this.camera,n=2*lt*t.angle*this.focus,i=this.mapSize.width/this.mapSize.height,r=t.distance||e.far;n===e.fov&&i===e.aspect&&r===e.far||(e.fov=n,e.aspect=i,e.far=r,e.updateProjectionMatrix()),super.updateMatrices(t)}copy(t){return super.copy(t),this.focus=t.focus,this}}Wl.prototype.isSpotLightShadow=!0;class jl extends Ol{constructor(t,e,n=0,i=Math.PI/3,r=0,s=1){super(t,e),this.type="SpotLight",this.position.copy(Pe.DefaultUp),this.updateMatrix(),this.target=new Pe,this.distance=n,this.angle=i,this.penumbra=r,this.decay=s,this.shadow=new Wl}get power(){return this.intensity*Math.PI}set power(t){this.intensity=t/Math.PI}dispose(){this.shadow.dispose()}copy(t){return super.copy(t),this.distance=t.distance,this.angle=t.angle,this.penumbra=t.penumbra,this.decay=t.decay,this.target=t.target.clone(),this.shadow=t.shadow.clone(),this}}jl.prototype.isSpotLight=!0;const ql=new ae,Xl=new Rt,Yl=new Rt;class Jl extends Vl{constructor(){super(new Jn(90,1,.5,500)),this._frameExtents=new vt(4,2),this._viewportCount=6,this._viewports=[new St(2,1,1,1),new St(0,1,1,1),new St(3,1,1,1),new St(1,1,1,1),new St(3,0,1,1),new St(1,0,1,1)],this._cubeDirections=[new Rt(1,0,0),new Rt(-1,0,0),new Rt(0,0,1),new Rt(0,0,-1),new Rt(0,1,0),new Rt(0,-1,0)],this._cubeUps=[new Rt(0,1,0),new Rt(0,1,0),new Rt(0,1,0),new Rt(0,1,0),new Rt(0,0,1),new Rt(0,0,-1)]}updateMatrices(t,e=0){const n=this.camera,i=this.matrix,r=t.distance||n.far;r!==n.far&&(n.far=r,n.updateProjectionMatrix()),Xl.setFromMatrixPosition(t.matrixWorld),n.position.copy(Xl),Yl.copy(n.position),Yl.add(this._cubeDirections[e]),n.up.copy(this._cubeUps[e]),n.lookAt(Yl),n.updateMatrixWorld(),i.makeTranslation(-Xl.x,-Xl.y,-Xl.z),ql.multiplyMatrices(n.projectionMatrix,n.matrixWorldInverse),this._frustum.setFromProjectionMatrix(ql)}}Jl.prototype.isPointLightShadow=!0;class Zl extends Ol{constructor(t,e,n=0,i=1){super(t,e),this.type="PointLight",this.distance=n,this.decay=i,this.shadow=new Jl}get power(){return 4*this.intensity*Math.PI}set power(t){this.intensity=t/(4*Math.PI)}dispose(){this.shadow.dispose()}copy(t){return super.copy(t),this.distance=t.distance,this.decay=t.decay,this.shadow=t.shadow.clone(),this}}Zl.prototype.isPointLight=!0;class Ql extends Yn{constructor(t=-1,e=1,n=1,i=-1,r=.1,s=2e3){super(),this.type="OrthographicCamera",this.zoom=1,this.view=null,this.left=t,this.right=e,this.top=n,this.bottom=i,this.near=r,this.far=s,this.updateProjectionMatrix()}copy(t,e){return super.copy(t,e),this.left=t.left,this.right=t.right,this.top=t.top,this.bottom=t.bottom,this.near=t.near,this.far=t.far,this.zoom=t.zoom,this.view=null===t.view?null:Object.assign({},t.view),this}setViewOffset(t,e,n,i,r,s){null===this.view&&(this.view={enabled:!0,fullWidth:1,fullHeight:1,offsetX:0,offsetY:0,width:1,height:1}),this.view.enabled=!0,this.view.fullWidth=t,this.view.fullHeight=e,this.view.offsetX=n,this.view.offsetY=i,this.view.width=r,this.view.height=s,this.updateProjectionMatrix()}clearViewOffset(){null!==this.view&&(this.view.enabled=!1),this.updateProjectionMatrix()}updateProjectionMatrix(){const t=(this.right-this.left)/(2*this.zoom),e=(this.top-this.bottom)/(2*this.zoom),n=(this.right+this.left)/2,i=(this.top+this.bottom)/2;let r=n-t,s=n+t,a=i+e,o=i-e;if(null!==this.view&&this.view.enabled){const t=(this.right-this.left)/this.view.fullWidth/this.zoom,e=(this.top-this.bottom)/this.view.fullHeight/this.zoom;r+=t*this.view.offsetX,s=r+t*this.view.width,a-=e*this.view.offsetY,o=a-e*this.view.height}this.projectionMatrix.makeOrthographic(r,s,a,o,this.near,this.far),this.projectionMatrixInverse.copy(this.projectionMatrix).invert()}toJSON(t){const e=super.toJSON(t);return e.object.zoom=this.zoom,e.object.left=this.left,e.object.right=this.right,e.object.top=this.top,e.object.bottom=this.bottom,e.object.near=this.near,e.object.far=this.far,null!==this.view&&(e.object.view=Object.assign({},this.view)),e}}Ql.prototype.isOrthographicCamera=!0;class Kl extends Vl{constructor(){super(new Ql(-5,5,5,-5,.5,500))}}Kl.prototype.isDirectionalLightShadow=!0;class $l extends Ol{constructor(t,e){super(t,e),this.type="DirectionalLight",this.position.copy(Pe.DefaultUp),this.updateMatrix(),this.target=new Pe,this.shadow=new Kl}dispose(){this.shadow.dispose()}copy(t){return super.copy(t),this.target=t.target.clone(),this.shadow=t.shadow.clone(),this}}$l.prototype.isDirectionalLight=!0;class tc extends Ol{constructor(t,e){super(t,e),this.type="AmbientLight"}}tc.prototype.isAmbientLight=!0;class ec extends Ol{constructor(t,e,n=10,i=10){super(t,e),this.type="RectAreaLight",this.width=n,this.height=i}copy(t){return super.copy(t),this.width=t.width,this.height=t.height,this}toJSON(t){const e=super.toJSON(t);return e.object.width=this.width,e.object.height=this.height,e}}ec.prototype.isRectAreaLight=!0;class nc{constructor(){this.coefficients=[];for(let t=0;t<9;t++)this.coefficients.push(new Rt)}set(t){for(let e=0;e<9;e++)this.coefficients[e].copy(t[e]);return this}zero(){for(let t=0;t<9;t++)this.coefficients[t].set(0,0,0);return this}getAt(t,e){const n=t.x,i=t.y,r=t.z,s=this.coefficients;return e.copy(s[0]).multiplyScalar(.282095),e.addScaledVector(s[1],.488603*i),e.addScaledVector(s[2],.488603*r),e.addScaledVector(s[3],.488603*n),e.addScaledVector(s[4],n*i*1.092548),e.addScaledVector(s[5],i*r*1.092548),e.addScaledVector(s[6],.315392*(3*r*r-1)),e.addScaledVector(s[7],n*r*1.092548),e.addScaledVector(s[8],.546274*(n*n-i*i)),e}getIrradianceAt(t,e){const n=t.x,i=t.y,r=t.z,s=this.coefficients;return e.copy(s[0]).multiplyScalar(.886227),e.addScaledVector(s[1],1.023328*i),e.addScaledVector(s[2],1.023328*r),e.addScaledVector(s[3],1.023328*n),e.addScaledVector(s[4],.858086*n*i),e.addScaledVector(s[5],.858086*i*r),e.addScaledVector(s[6],.743125*r*r-.247708),e.addScaledVector(s[7],.858086*n*r),e.addScaledVector(s[8],.429043*(n*n-i*i)),e}add(t){for(let e=0;e<9;e++)this.coefficients[e].add(t.coefficients[e]);return this}addScaledSH(t,e){for(let n=0;n<9;n++)this.coefficients[n].addScaledVector(t.coefficients[n],e);return this}scale(t){for(let e=0;e<9;e++)this.coefficients[e].multiplyScalar(t);return this}lerp(t,e){for(let n=0;n<9;n++)this.coefficients[n].lerp(t.coefficients[n],e);return this}equals(t){for(let e=0;e<9;e++)if(!this.coefficients[e].equals(t.coefficients[e]))return!1;return!0}copy(t){return this.set(t.coefficients)}clone(){return(new this.constructor).copy(this)}fromArray(t,e=0){const n=this.coefficients;for(let i=0;i<9;i++)n[i].fromArray(t,e+3*i);return this}toArray(t=[],e=0){const n=this.coefficients;for(let i=0;i<9;i++)n[i].toArray(t,e+3*i);return t}static getBasisAt(t,e){const n=t.x,i=t.y,r=t.z;e[0]=.282095,e[1]=.488603*i,e[2]=.488603*r,e[3]=.488603*n,e[4]=1.092548*n*i,e[5]=1.092548*i*r,e[6]=.315392*(3*r*r-1),e[7]=1.092548*n*r,e[8]=.546274*(n*n-i*i)}}nc.prototype.isSphericalHarmonics3=!0;class ic extends Ol{constructor(t=new nc,e=1){super(void 0,e),this.sh=t}copy(t){return super.copy(t),this.sh.copy(t.sh),this}fromJSON(t){return this.intensity=t.intensity,this.sh.fromArray(t.sh),this}toJSON(t){const e=super.toJSON(t);return e.object.sh=this.sh.toArray(),e}}ic.prototype.isLightProbe=!0;class rc extends Ll{constructor(t){super(t),this.textures={}}load(t,e,n,i){const r=this,s=new Cl(r.manager);s.setPath(r.path),s.setRequestHeader(r.requestHeader),s.setWithCredentials(r.withCredentials),s.load(t,(function(n){try{e(r.parse(JSON.parse(n)))}catch(e){i?i(e):console.error(e),r.manager.itemError(t)}}),n,i)}parse(t){const e=this.textures;function n(t){return void 0===e[t]&&console.warn("THREE.MaterialLoader: Undefined texture",t),e[t]}const i=new cl[t.type];if(void 0!==t.uuid&&(i.uuid=t.uuid),void 0!==t.name&&(i.name=t.name),void 0!==t.color&&void 0!==i.color&&i.color.setHex(t.color),void 0!==t.roughness&&(i.roughness=t.roughness),void 0!==t.metalness&&(i.metalness=t.metalness),void 0!==t.sheen&&(i.sheen=(new Qe).setHex(t.sheen)),void 0!==t.emissive&&void 0!==i.emissive&&i.emissive.setHex(t.emissive),void 0!==t.specular&&void 0!==i.specular&&i.specular.setHex(t.specular),void 0!==t.shininess&&(i.shininess=t.shininess),void 0!==t.clearcoat&&(i.clearcoat=t.clearcoat),void 0!==t.clearcoatRoughness&&(i.clearcoatRoughness=t.clearcoatRoughness),void 0!==t.transmission&&(i.transmission=t.transmission),void 0!==t.thickness&&(i.thickness=t.thickness),void 0!==t.attenuationDistance&&(i.attenuationDistance=t.attenuationDistance),void 0!==t.attenuationColor&&void 0!==i.attenuationColor&&i.attenuationColor.setHex(t.attenuationColor),void 0!==t.fog&&(i.fog=t.fog),void 0!==t.flatShading&&(i.flatShading=t.flatShading),void 0!==t.blending&&(i.blending=t.blending),void 0!==t.combine&&(i.combine=t.combine),void 0!==t.side&&(i.side=t.side),void 0!==t.shadowSide&&(i.shadowSide=t.shadowSide),void 0!==t.opacity&&(i.opacity=t.opacity),void 0!==t.transparent&&(i.transparent=t.transparent),void 0!==t.alphaTest&&(i.alphaTest=t.alphaTest),void 0!==t.depthTest&&(i.depthTest=t.depthTest),void 0!==t.depthWrite&&(i.depthWrite=t.depthWrite),void 0!==t.colorWrite&&(i.colorWrite=t.colorWrite),void 0!==t.stencilWrite&&(i.stencilWrite=t.stencilWrite),void 0!==t.stencilWriteMask&&(i.stencilWriteMask=t.stencilWriteMask),void 0!==t.stencilFunc&&(i.stencilFunc=t.stencilFunc),void 0!==t.stencilRef&&(i.stencilRef=t.stencilRef),void 0!==t.stencilFuncMask&&(i.stencilFuncMask=t.stencilFuncMask),void 0!==t.stencilFail&&(i.stencilFail=t.stencilFail),void 0!==t.stencilZFail&&(i.stencilZFail=t.stencilZFail),void 0!==t.stencilZPass&&(i.stencilZPass=t.stencilZPass),void 0!==t.wireframe&&(i.wireframe=t.wireframe),void 0!==t.wireframeLinewidth&&(i.wireframeLinewidth=t.wireframeLinewidth),void 0!==t.wireframeLinecap&&(i.wireframeLinecap=t.wireframeLinecap),void 0!==t.wireframeLinejoin&&(i.wireframeLinejoin=t.wireframeLinejoin),void 0!==t.rotation&&(i.rotation=t.rotation),1!==t.linewidth&&(i.linewidth=t.linewidth),void 0!==t.dashSize&&(i.dashSize=t.dashSize),void 0!==t.gapSize&&(i.gapSize=t.gapSize),void 0!==t.scale&&(i.scale=t.scale),void 0!==t.polygonOffset&&(i.polygonOffset=t.polygonOffset),void 0!==t.polygonOffsetFactor&&(i.polygonOffsetFactor=t.polygonOffsetFactor),void 0!==t.polygonOffsetUnits&&(i.polygonOffsetUnits=t.polygonOffsetUnits),void 0!==t.morphTargets&&(i.morphTargets=t.morphTargets),void 0!==t.morphNormals&&(i.morphNormals=t.morphNormals),void 0!==t.dithering&&(i.dithering=t.dithering),void 0!==t.alphaToCoverage&&(i.alphaToCoverage=t.alphaToCoverage),void 0!==t.premultipliedAlpha&&(i.premultipliedAlpha=t.premultipliedAlpha),void 0!==t.vertexTangents&&(i.vertexTangents=t.vertexTangents),void 0!==t.visible&&(i.visible=t.visible),void 0!==t.toneMapped&&(i.toneMapped=t.toneMapped),void 0!==t.userData&&(i.userData=t.userData),void 0!==t.vertexColors&&("number"==typeof t.vertexColors?i.vertexColors=t.vertexColors>0:i.vertexColors=t.vertexColors),void 0!==t.uniforms)for(const e in t.uniforms){const r=t.uniforms[e];switch(i.uniforms[e]={},r.type){case"t":i.uniforms[e].value=n(r.value);break;case"c":i.uniforms[e].value=(new Qe).setHex(r.value);break;case"v2":i.uniforms[e].value=(new vt).fromArray(r.value);break;case"v3":i.uniforms[e].value=(new Rt).fromArray(r.value);break;case"v4":i.uniforms[e].value=(new St).fromArray(r.value);break;case"m3":i.uniforms[e].value=(new yt).fromArray(r.value);break;case"m4":i.uniforms[e].value=(new ae).fromArray(r.value);break;default:i.uniforms[e].value=r.value}}if(void 0!==t.defines&&(i.defines=t.defines),void 0!==t.vertexShader&&(i.vertexShader=t.vertexShader),void 0!==t.fragmentShader&&(i.fragmentShader=t.fragmentShader),void 0!==t.extensions)for(const e in t.extensions)i.extensions[e]=t.extensions[e];if(void 0!==t.shading&&(i.flatShading=1===t.shading),void 0!==t.size&&(i.size=t.size),void 0!==t.sizeAttenuation&&(i.sizeAttenuation=t.sizeAttenuation),void 0!==t.map&&(i.map=n(t.map)),void 0!==t.matcap&&(i.matcap=n(t.matcap)),void 0!==t.alphaMap&&(i.alphaMap=n(t.alphaMap)),void 0!==t.bumpMap&&(i.bumpMap=n(t.bumpMap)),void 0!==t.bumpScale&&(i.bumpScale=t.bumpScale),void 0!==t.normalMap&&(i.normalMap=n(t.normalMap)),void 0!==t.normalMapType&&(i.normalMapType=t.normalMapType),void 0!==t.normalScale){let e=t.normalScale;!1===Array.isArray(e)&&(e=[e,e]),i.normalScale=(new vt).fromArray(e)}return void 0!==t.displacementMap&&(i.displacementMap=n(t.displacementMap)),void 0!==t.displacementScale&&(i.displacementScale=t.displacementScale),void 0!==t.displacementBias&&(i.displacementBias=t.displacementBias),void 0!==t.roughnessMap&&(i.roughnessMap=n(t.roughnessMap)),void 0!==t.metalnessMap&&(i.metalnessMap=n(t.metalnessMap)),void 0!==t.emissiveMap&&(i.emissiveMap=n(t.emissiveMap)),void 0!==t.emissiveIntensity&&(i.emissiveIntensity=t.emissiveIntensity),void 0!==t.specularMap&&(i.specularMap=n(t.specularMap)),void 0!==t.envMap&&(i.envMap=n(t.envMap)),void 0!==t.envMapIntensity&&(i.envMapIntensity=t.envMapIntensity),void 0!==t.reflectivity&&(i.reflectivity=t.reflectivity),void 0!==t.refractionRatio&&(i.refractionRatio=t.refractionRatio),void 0!==t.lightMap&&(i.lightMap=n(t.lightMap)),void 0!==t.lightMapIntensity&&(i.lightMapIntensity=t.lightMapIntensity),void 0!==t.aoMap&&(i.aoMap=n(t.aoMap)),void 0!==t.aoMapIntensity&&(i.aoMapIntensity=t.aoMapIntensity),void 0!==t.gradientMap&&(i.gradientMap=n(t.gradientMap)),void 0!==t.clearcoatMap&&(i.clearcoatMap=n(t.clearcoatMap)),void 0!==t.clearcoatRoughnessMap&&(i.clearcoatRoughnessMap=n(t.clearcoatRoughnessMap)),void 0!==t.clearcoatNormalMap&&(i.clearcoatNormalMap=n(t.clearcoatNormalMap)),void 0!==t.clearcoatNormalScale&&(i.clearcoatNormalScale=(new vt).fromArray(t.clearcoatNormalScale)),void 0!==t.transmissionMap&&(i.transmissionMap=n(t.transmissionMap)),void 0!==t.thicknessMap&&(i.thicknessMap=n(t.thicknessMap)),i}setTextures(t){return this.textures=t,this}}class sc{static decodeText(t){if("undefined"!=typeof TextDecoder)return(new TextDecoder).decode(t);let e="";for(let n=0,i=t.length;n<i;n++)e+=String.fromCharCode(t[n]);try{return decodeURIComponent(escape(e))}catch(t){return e}}static extractUrlBase(t){const e=t.lastIndexOf("/");return-1===e?"./":t.substr(0,e+1)}}class ac extends wn{constructor(){super(),this.type="InstancedBufferGeometry",this.instanceCount=1/0}copy(t){return super.copy(t),this.instanceCount=t.instanceCount,this}clone(){return(new this.constructor).copy(this)}toJSON(){const t=super.toJSON(this);return t.instanceCount=this.instanceCount,t.isInstancedBufferGeometry=!0,t}}ac.prototype.isInstancedBufferGeometry=!0;class oc extends en{constructor(t,e,n,i=1){"number"==typeof n&&(i=n,n=!1,console.error("THREE.InstancedBufferAttribute: The constructor now expects normalized as the third argument.")),super(t,e,n),this.meshPerAttribute=i}copy(t){return super.copy(t),this.meshPerAttribute=t.meshPerAttribute,this}toJSON(){const t=super.toJSON();return t.meshPerAttribute=this.meshPerAttribute,t.isInstancedBufferAttribute=!0,t}}oc.prototype.isInstancedBufferAttribute=!0;class lc extends Ll{constructor(t){super(t)}load(t,e,n,i){const r=this,s=new Cl(r.manager);s.setPath(r.path),s.setRequestHeader(r.requestHeader),s.setWithCredentials(r.withCredentials),s.load(t,(function(n){try{e(r.parse(JSON.parse(n)))}catch(e){i?i(e):console.error(e),r.manager.itemError(t)}}),n,i)}parse(t){const e={},n={};function i(t,i){if(void 0!==e[i])return e[i];const r=t.interleavedBuffers[i],s=function(t,e){if(void 0!==n[e])return n[e];const i=t.arrayBuffers[e],r=new Uint32Array(i).buffer;return n[e]=r,r}(t,r.buffer),a=fn(r.type,s),o=new Es(a,r.stride);return o.uuid=r.uuid,e[i]=o,o}const r=t.isInstancedBufferGeometry?new ac:new wn,s=t.data.index;if(void 0!==s){const t=fn(s.type,s.array);r.setIndex(new en(t,1))}const a=t.data.attributes;for(const e in a){const n=a[e];let s;if(n.isInterleavedBufferAttribute){const e=i(t.data,n.data);s=new Ls(e,n.itemSize,n.offset,n.normalized)}else{const t=fn(n.type,n.array);s=new(n.isInstancedBufferAttribute?oc:en)(t,n.itemSize,n.normalized)}void 0!==n.name&&(s.name=n.name),void 0!==n.usage&&s.setUsage(n.usage),void 0!==n.updateRange&&(s.updateRange.offset=n.updateRange.offset,s.updateRange.count=n.updateRange.count),r.setAttribute(e,s)}const o=t.data.morphAttributes;if(o)for(const e in o){const n=o[e],s=[];for(let e=0,r=n.length;e<r;e++){const r=n[e];let a;if(r.isInterleavedBufferAttribute){const e=i(t.data,r.data);a=new Ls(e,r.itemSize,r.offset,r.normalized)}else{const t=fn(r.type,r.array);a=new en(t,r.itemSize,r.normalized)}void 0!==r.name&&(a.name=r.name),s.push(a)}r.morphAttributes[e]=s}t.data.morphTargetsRelative&&(r.morphTargetsRelative=!0);const l=t.data.groups||t.data.drawcalls||t.data.offsets;if(void 0!==l)for(let t=0,e=l.length;t!==e;++t){const e=l[t];r.addGroup(e.start,e.count,e.materialIndex)}const c=t.data.boundingSphere;if(void 0!==c){const t=new Rt;void 0!==c.center&&t.fromArray(c.center),r.boundingSphere=new Qt(t,c.radius)}return t.name&&(r.name=t.name),t.userData&&(r.userData=t.userData),r}}const cc={UVMapping:i,CubeReflectionMapping:r,CubeRefractionMapping:s,EquirectangularReflectionMapping:a,EquirectangularRefractionMapping:o,CubeUVReflectionMapping:l,CubeUVRefractionMapping:c},hc={RepeatWrapping:h,ClampToEdgeWrapping:u,MirroredRepeatWrapping:d},uc={NearestFilter:p,NearestMipmapNearestFilter:m,NearestMipmapLinearFilter:f,LinearFilter:g,LinearMipmapNearestFilter:v,LinearMipmapLinearFilter:y};class dc extends Ll{constructor(t){super(t),"undefined"==typeof createImageBitmap&&console.warn("THREE.ImageBitmapLoader: createImageBitmap() not supported."),"undefined"==typeof fetch&&console.warn("THREE.ImageBitmapLoader: fetch() not supported."),this.options={premultiplyAlpha:"none"}}setOptions(t){return this.options=t,this}load(t,e,n,i){void 0===t&&(t=""),void 0!==this.path&&(t=this.path+t),t=this.manager.resolveURL(t);const r=this,s=Tl.get(t);if(void 0!==s)return r.manager.itemStart(t),setTimeout((function(){e&&e(s),r.manager.itemEnd(t)}),0),s;const a={};a.credentials="anonymous"===this.crossOrigin?"same-origin":"include",a.headers=this.requestHeader,fetch(t,a).then((function(t){return t.blob()})).then((function(t){return createImageBitmap(t,Object.assign(r.options,{colorSpaceConversion:"none"}))})).then((function(n){Tl.add(t,n),e&&e(n),r.manager.itemEnd(t)})).catch((function(e){i&&i(e),r.manager.itemError(t),r.manager.itemEnd(t)})),r.manager.itemStart(t)}}dc.prototype.isImageBitmapLoader=!0;class pc{constructor(){this.type="ShapePath",this.color=new Qe,this.subPaths=[],this.currentPath=null}moveTo(t,e){return this.currentPath=new zl,this.subPaths.push(this.currentPath),this.currentPath.moveTo(t,e),this}lineTo(t,e){return this.currentPath.lineTo(t,e),this}quadraticCurveTo(t,e,n,i){return this.currentPath.quadraticCurveTo(t,e,n,i),this}bezierCurveTo(t,e,n,i,r,s){return this.currentPath.bezierCurveTo(t,e,n,i,r,s),this}splineThru(t){return this.currentPath.splineThru(t),this}toShapes(t,e){function n(t){const e=[];for(let n=0,i=t.length;n<i;n++){const i=t[n],r=new Fl;r.curves=i.curves,e.push(r)}return e}function i(t,e){const n=e.length;let i=!1;for(let r=n-1,s=0;s<n;r=s++){let n=e[r],a=e[s],o=a.x-n.x,l=a.y-n.y;if(Math.abs(l)>Number.EPSILON){if(l<0&&(n=e[s],o=-o,a=e[r],l=-l),t.y<n.y||t.y>a.y)continue;if(t.y===n.y){if(t.x===n.x)return!0}else{const e=l*(t.x-n.x)-o*(t.y-n.y);if(0===e)return!0;if(e<0)continue;i=!i}}else{if(t.y!==n.y)continue;if(a.x<=t.x&&t.x<=n.x||n.x<=t.x&&t.x<=a.x)return!0}}return i}const r=No.isClockWise,s=this.subPaths;if(0===s.length)return[];if(!0===e)return n(s);let a,o,l;const c=[];if(1===s.length)return o=s[0],l=new Fl,l.curves=o.curves,c.push(l),c;let h=!r(s[0].getPoints());h=t?!h:h;const u=[],d=[];let p,m,f=[],g=0;d[g]=void 0,f[g]=[];for(let e=0,n=s.length;e<n;e++)o=s[e],p=o.getPoints(),a=r(p),a=t?!a:a,a?(!h&&d[g]&&g++,d[g]={s:new Fl,p:p},d[g].s.curves=o.curves,h&&g++,f[g]=[]):f[g].push({h:o,p:p[0]});if(!d[0])return n(s);if(d.length>1){let t=!1;const e=[];for(let t=0,e=d.length;t<e;t++)u[t]=[];for(let n=0,r=d.length;n<r;n++){const r=f[n];for(let s=0;s<r.length;s++){const a=r[s];let o=!0;for(let r=0;r<d.length;r++)i(a.p,d[r].p)&&(n!==r&&e.push({froms:n,tos:r,hole:s}),o?(o=!1,u[r].push(a)):t=!0);o&&u[n].push(a)}}e.length>0&&(t||(f=u))}for(let t=0,e=d.length;t<e;t++){l=d[t].s,c.push(l),m=f[t];for(let t=0,e=m.length;t<e;t++)l.holes.push(m[t].h)}return c}}class mc{constructor(t){this.type="Font",this.data=t}generateShapes(t,e=100){const n=[],i=function(t,e,n){const i=Array.from(t),r=e/n.resolution,s=(n.boundingBox.yMax-n.boundingBox.yMin+n.underlineThickness)*r,a=[];let o=0,l=0;for(let t=0;t<i.length;t++){const e=i[t];if("\n"===e)o=0,l-=s;else{const t=fc(e,r,o,l,n);o+=t.offsetX,a.push(t.path)}}return a}(t,e,this.data);for(let t=0,e=i.length;t<e;t++)Array.prototype.push.apply(n,i[t].toShapes());return n}}function fc(t,e,n,i,r){const s=r.glyphs[t]||r.glyphs["?"];if(!s)return void console.error('THREE.Font: character "'+t+'" does not exists in font family '+r.familyName+".");const a=new pc;let o,l,c,h,u,d,p,m;if(s.o){const t=s._cachedOutline||(s._cachedOutline=s.o.split(" "));for(let r=0,s=t.length;r<s;){switch(t[r++]){case"m":o=t[r++]*e+n,l=t[r++]*e+i,a.moveTo(o,l);break;case"l":o=t[r++]*e+n,l=t[r++]*e+i,a.lineTo(o,l);break;case"q":c=t[r++]*e+n,h=t[r++]*e+i,u=t[r++]*e+n,d=t[r++]*e+i,a.quadraticCurveTo(u,d,c,h);break;case"b":c=t[r++]*e+n,h=t[r++]*e+i,u=t[r++]*e+n,d=t[r++]*e+i,p=t[r++]*e+n,m=t[r++]*e+i,a.bezierCurveTo(u,d,p,m,c,h)}}}return{offsetX:s.ha*e,path:a}}mc.prototype.isFont=!0;let gc;const vc={getContext:function(){return void 0===gc&&(gc=new(window.AudioContext||window.webkitAudioContext)),gc},setContext:function(t){gc=t}};class yc extends Ll{constructor(t){super(t)}load(t,e,n,i){const r=this,s=new Cl(this.manager);s.setResponseType("arraybuffer"),s.setPath(this.path),s.setRequestHeader(this.requestHeader),s.setWithCredentials(this.withCredentials),s.load(t,(function(n){try{const t=n.slice(0);vc.getContext().decodeAudioData(t,(function(t){e(t)}))}catch(e){i?i(e):console.error(e),r.manager.itemError(t)}}),n,i)}}class xc extends ic{constructor(t,e,n=1){super(void 0,n);const i=(new Qe).set(t),r=(new Qe).set(e),s=new Rt(i.r,i.g,i.b),a=new Rt(r.r,r.g,r.b),o=Math.sqrt(Math.PI),l=o*Math.sqrt(.75);this.sh.coefficients[0].copy(s).add(a).multiplyScalar(o),this.sh.coefficients[1].copy(s).sub(a).multiplyScalar(l)}}xc.prototype.isHemisphereLightProbe=!0;class _c extends ic{constructor(t,e=1){super(void 0,e);const n=(new Qe).set(t);this.sh.coefficients[0].set(n.r,n.g,n.b).multiplyScalar(2*Math.sqrt(Math.PI))}}_c.prototype.isAmbientLightProbe=!0;const bc=new ae,Mc=new ae;class wc{constructor(t=!0){this.autoStart=t,this.startTime=0,this.oldTime=0,this.elapsedTime=0,this.running=!1}start(){this.startTime=Sc(),this.oldTime=this.startTime,this.elapsedTime=0,this.running=!0}stop(){this.getElapsedTime(),this.running=!1,this.autoStart=!1}getElapsedTime(){return this.getDelta(),this.elapsedTime}getDelta(){let t=0;if(this.autoStart&&!this.running)return this.start(),0;if(this.running){const e=Sc();t=(e-this.oldTime)/1e3,this.oldTime=e,this.elapsedTime+=t}return t}}function Sc(){return("undefined"==typeof performance?Date:performance).now()}const Tc=new Rt,Ec=new Lt,Ac=new Rt,Lc=new Rt;class Rc extends Pe{constructor(t){super(),this.type="Audio",this.listener=t,this.context=t.context,this.gain=this.context.createGain(),this.gain.connect(t.getInput()),this.autoplay=!1,this.buffer=null,this.detune=0,this.loop=!1,this.loopStart=0,this.loopEnd=0,this.offset=0,this.duration=void 0,this.playbackRate=1,this.isPlaying=!1,this.hasPlaybackControl=!0,this.source=null,this.sourceType="empty",this._startedAt=0,this._progress=0,this._connected=!1,this.filters=[]}getOutput(){return this.gain}setNodeSource(t){return this.hasPlaybackControl=!1,this.sourceType="audioNode",this.source=t,this.connect(),this}setMediaElementSource(t){return this.hasPlaybackControl=!1,this.sourceType="mediaNode",this.source=this.context.createMediaElementSource(t),this.connect(),this}setMediaStreamSource(t){return this.hasPlaybackControl=!1,this.sourceType="mediaStreamNode",this.source=this.context.createMediaStreamSource(t),this.connect(),this}setBuffer(t){return this.buffer=t,this.sourceType="buffer",this.autoplay&&this.play(),this}play(t=0){if(!0===this.isPlaying)return void console.warn("THREE.Audio: Audio is already playing.");if(!1===this.hasPlaybackControl)return void console.warn("THREE.Audio: this Audio has no playback control.");this._startedAt=this.context.currentTime+t;const e=this.context.createBufferSource();return e.buffer=this.buffer,e.loop=this.loop,e.loopStart=this.loopStart,e.loopEnd=this.loopEnd,e.onended=this.onEnded.bind(this),e.start(this._startedAt,this._progress+this.offset,this.duration),this.isPlaying=!0,this.source=e,this.setDetune(this.detune),this.setPlaybackRate(this.playbackRate),this.connect()}pause(){if(!1!==this.hasPlaybackControl)return!0===this.isPlaying&&(this._progress+=Math.max(this.context.currentTime-this._startedAt,0)*this.playbackRate,!0===this.loop&&(this._progress=this._progress%(this.duration||this.buffer.duration)),this.source.stop(),this.source.onended=null,this.isPlaying=!1),this;console.warn("THREE.Audio: this Audio has no playback control.")}stop(){if(!1!==this.hasPlaybackControl)return this._progress=0,this.source.stop(),this.source.onended=null,this.isPlaying=!1,this;console.warn("THREE.Audio: this Audio has no playback control.")}connect(){if(this.filters.length>0){this.source.connect(this.filters[0]);for(let t=1,e=this.filters.length;t<e;t++)this.filters[t-1].connect(this.filters[t]);this.filters[this.filters.length-1].connect(this.getOutput())}else this.source.connect(this.getOutput());return this._connected=!0,this}disconnect(){if(this.filters.length>0){this.source.disconnect(this.filters[0]);for(let t=1,e=this.filters.length;t<e;t++)this.filters[t-1].disconnect(this.filters[t]);this.filters[this.filters.length-1].disconnect(this.getOutput())}else this.source.disconnect(this.getOutput());return this._connected=!1,this}getFilters(){return this.filters}setFilters(t){return t||(t=[]),!0===this._connected?(this.disconnect(),this.filters=t.slice(),this.connect()):this.filters=t.slice(),this}setDetune(t){if(this.detune=t,void 0!==this.source.detune)return!0===this.isPlaying&&this.source.detune.setTargetAtTime(this.detune,this.context.currentTime,.01),this}getDetune(){return this.detune}getFilter(){return this.getFilters()[0]}setFilter(t){return this.setFilters(t?[t]:[])}setPlaybackRate(t){if(!1!==this.hasPlaybackControl)return this.playbackRate=t,!0===this.isPlaying&&this.source.playbackRate.setTargetAtTime(this.playbackRate,this.context.currentTime,.01),this;console.warn("THREE.Audio: this Audio has no playback control.")}getPlaybackRate(){return this.playbackRate}onEnded(){this.isPlaying=!1}getLoop(){return!1===this.hasPlaybackControl?(console.warn("THREE.Audio: this Audio has no playback control."),!1):this.loop}setLoop(t){if(!1!==this.hasPlaybackControl)return this.loop=t,!0===this.isPlaying&&(this.source.loop=this.loop),this;console.warn("THREE.Audio: this Audio has no playback control.")}setLoopStart(t){return this.loopStart=t,this}setLoopEnd(t){return this.loopEnd=t,this}getVolume(){return this.gain.gain.value}setVolume(t){return this.gain.gain.setTargetAtTime(t,this.context.currentTime,.01),this}}const Cc=new Rt,Pc=new Lt,Dc=new Rt,Ic=new Rt;class Nc{constructor(t,e=2048){this.analyser=t.context.createAnalyser(),this.analyser.fftSize=e,this.data=new Uint8Array(this.analyser.frequencyBinCount),t.getOutput().connect(this.analyser)}getFrequencyData(){return this.analyser.getByteFrequencyData(this.data),this.data}getAverageFrequency(){let t=0;const e=this.getFrequencyData();for(let n=0;n<e.length;n++)t+=e[n];return t/e.length}}class Bc{constructor(t,e,n){let i,r,s;switch(this.binding=t,this.valueSize=n,e){case"quaternion":i=this._slerp,r=this._slerpAdditive,s=this._setAdditiveIdentityQuaternion,this.buffer=new Float64Array(6*n),this._workIndex=5;break;case"string":case"bool":i=this._select,r=this._select,s=this._setAdditiveIdentityOther,this.buffer=new Array(5*n);break;default:i=this._lerp,r=this._lerpAdditive,s=this._setAdditiveIdentityNumeric,this.buffer=new Float64Array(5*n)}this._mixBufferRegion=i,this._mixBufferRegionAdditive=r,this._setIdentity=s,this._origIndex=3,this._addIndex=4,this.cumulativeWeight=0,this.cumulativeWeightAdditive=0,this.useCount=0,this.referenceCount=0}accumulate(t,e){const n=this.buffer,i=this.valueSize,r=t*i+i;let s=this.cumulativeWeight;if(0===s){for(let t=0;t!==i;++t)n[r+t]=n[t];s=e}else{s+=e;const t=e/s;this._mixBufferRegion(n,r,0,t,i)}this.cumulativeWeight=s}accumulateAdditive(t){const e=this.buffer,n=this.valueSize,i=n*this._addIndex;0===this.cumulativeWeightAdditive&&this._setIdentity(),this._mixBufferRegionAdditive(e,i,0,t,n),this.cumulativeWeightAdditive+=t}apply(t){const e=this.valueSize,n=this.buffer,i=t*e+e,r=this.cumulativeWeight,s=this.cumulativeWeightAdditive,a=this.binding;if(this.cumulativeWeight=0,this.cumulativeWeightAdditive=0,r<1){const t=e*this._origIndex;this._mixBufferRegion(n,i,t,1-r,e)}s>0&&this._mixBufferRegionAdditive(n,i,this._addIndex*e,1,e);for(let t=e,r=e+e;t!==r;++t)if(n[t]!==n[t+e]){a.setValue(n,i);break}}saveOriginalState(){const t=this.binding,e=this.buffer,n=this.valueSize,i=n*this._origIndex;t.getValue(e,i);for(let t=n,r=i;t!==r;++t)e[t]=e[i+t%n];this._setIdentity(),this.cumulativeWeight=0,this.cumulativeWeightAdditive=0}restoreOriginalState(){const t=3*this.valueSize;this.binding.setValue(this.buffer,t)}_setAdditiveIdentityNumeric(){const t=this._addIndex*this.valueSize,e=t+this.valueSize;for(let n=t;n<e;n++)this.buffer[n]=0}_setAdditiveIdentityQuaternion(){this._setAdditiveIdentityNumeric(),this.buffer[this._addIndex*this.valueSize+3]=1}_setAdditiveIdentityOther(){const t=this._origIndex*this.valueSize,e=this._addIndex*this.valueSize;for(let n=0;n<this.valueSize;n++)this.buffer[e+n]=this.buffer[t+n]}_select(t,e,n,i,r){if(i>=.5)for(let i=0;i!==r;++i)t[e+i]=t[n+i]}_slerp(t,e,n,i){Lt.slerpFlat(t,e,t,e,t,n,i)}_slerpAdditive(t,e,n,i,r){const s=this._workIndex*r;Lt.multiplyQuaternionsFlat(t,s,t,e,t,n),Lt.slerpFlat(t,e,t,e,t,s,i)}_lerp(t,e,n,i,r){const s=1-i;for(let a=0;a!==r;++a){const r=e+a;t[r]=t[r]*s+t[n+a]*i}}_lerpAdditive(t,e,n,i,r){for(let s=0;s!==r;++s){const r=e+s;t[r]=t[r]+t[n+s]*i}}}const zc="\\[\\]\\.:\\/",Fc=new RegExp("[\\[\\]\\.:\\/]","g"),Oc="[^\\[\\]\\.:\\/]",Hc="[^"+zc.replace("\\.","")+"]",Uc=/((?:WC+[\/:])*)/.source.replace("WC",Oc),Gc=/(WCOD+)?/.source.replace("WCOD",Hc),kc=/(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace("WC",Oc),Vc=/\.(WC+)(?:\[(.+)\])?/.source.replace("WC",Oc),Wc=new RegExp("^"+Uc+Gc+kc+Vc+"$"),jc=["material","materials","bones"];class qc{constructor(t,e,n){this.path=e,this.parsedPath=n||qc.parseTrackName(e),this.node=qc.findNode(t,this.parsedPath.nodeName)||t,this.rootNode=t,this.getValue=this._getValue_unbound,this.setValue=this._setValue_unbound}static create(t,e,n){return t&&t.isAnimationObjectGroup?new qc.Composite(t,e,n):new qc(t,e,n)}static sanitizeNodeName(t){return t.replace(/\s/g,"_").replace(Fc,"")}static parseTrackName(t){const e=Wc.exec(t);if(!e)throw new Error("PropertyBinding: Cannot parse trackName: "+t);const n={nodeName:e[2],objectName:e[3],objectIndex:e[4],propertyName:e[5],propertyIndex:e[6]},i=n.nodeName&&n.nodeName.lastIndexOf(".");if(void 0!==i&&-1!==i){const t=n.nodeName.substring(i+1);-1!==jc.indexOf(t)&&(n.nodeName=n.nodeName.substring(0,i),n.objectName=t)}if(null===n.propertyName||0===n.propertyName.length)throw new Error("PropertyBinding: can not parse propertyName from trackName: "+t);return n}static findNode(t,e){if(!e||""===e||"."===e||-1===e||e===t.name||e===t.uuid)return t;if(t.skeleton){const n=t.skeleton.getBoneByName(e);if(void 0!==n)return n}if(t.children){const n=function(t){for(let i=0;i<t.length;i++){const r=t[i];if(r.name===e||r.uuid===e)return r;const s=n(r.children);if(s)return s}return null},i=n(t.children);if(i)return i}return null}_getValue_unavailable(){}_setValue_unavailable(){}_getValue_direct(t,e){t[e]=this.node[this.propertyName]}_getValue_array(t,e){const n=this.resolvedProperty;for(let i=0,r=n.length;i!==r;++i)t[e++]=n[i]}_getValue_arrayElement(t,e){t[e]=this.resolvedProperty[this.propertyIndex]}_getValue_toArray(t,e){this.resolvedProperty.toArray(t,e)}_setValue_direct(t,e){this.targetObject[this.propertyName]=t[e]}_setValue_direct_setNeedsUpdate(t,e){this.targetObject[this.propertyName]=t[e],this.targetObject.needsUpdate=!0}_setValue_direct_setMatrixWorldNeedsUpdate(t,e){this.targetObject[this.propertyName]=t[e],this.targetObject.matrixWorldNeedsUpdate=!0}_setValue_array(t,e){const n=this.resolvedProperty;for(let i=0,r=n.length;i!==r;++i)n[i]=t[e++]}_setValue_array_setNeedsUpdate(t,e){const n=this.resolvedProperty;for(let i=0,r=n.length;i!==r;++i)n[i]=t[e++];this.targetObject.needsUpdate=!0}_setValue_array_setMatrixWorldNeedsUpdate(t,e){const n=this.resolvedProperty;for(let i=0,r=n.length;i!==r;++i)n[i]=t[e++];this.targetObject.matrixWorldNeedsUpdate=!0}_setValue_arrayElement(t,e){this.resolvedProperty[this.propertyIndex]=t[e]}_setValue_arrayElement_setNeedsUpdate(t,e){this.resolvedProperty[this.propertyIndex]=t[e],this.targetObject.needsUpdate=!0}_setValue_arrayElement_setMatrixWorldNeedsUpdate(t,e){this.resolvedProperty[this.propertyIndex]=t[e],this.targetObject.matrixWorldNeedsUpdate=!0}_setValue_fromArray(t,e){this.resolvedProperty.fromArray(t,e)}_setValue_fromArray_setNeedsUpdate(t,e){this.resolvedProperty.fromArray(t,e),this.targetObject.needsUpdate=!0}_setValue_fromArray_setMatrixWorldNeedsUpdate(t,e){this.resolvedProperty.fromArray(t,e),this.targetObject.matrixWorldNeedsUpdate=!0}_getValue_unbound(t,e){this.bind(),this.getValue(t,e)}_setValue_unbound(t,e){this.bind(),this.setValue(t,e)}bind(){let t=this.node;const e=this.parsedPath,n=e.objectName,i=e.propertyName;let r=e.propertyIndex;if(t||(t=qc.findNode(this.rootNode,e.nodeName)||this.rootNode,this.node=t),this.getValue=this._getValue_unavailable,this.setValue=this._setValue_unavailable,!t)return void console.error("THREE.PropertyBinding: Trying to update node for track: "+this.path+" but it wasn't found.");if(n){let i=e.objectIndex;switch(n){case"materials":if(!t.material)return void console.error("THREE.PropertyBinding: Can not bind to material as node does not have a material.",this);if(!t.material.materials)return void console.error("THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.",this);t=t.material.materials;break;case"bones":if(!t.skeleton)return void console.error("THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.",this);t=t.skeleton.bones;for(let e=0;e<t.length;e++)if(t[e].name===i){i=e;break}break;default:if(void 0===t[n])return void console.error("THREE.PropertyBinding: Can not bind to objectName of node undefined.",this);t=t[n]}if(void 0!==i){if(void 0===t[i])return void console.error("THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.",this,t);t=t[i]}}const s=t[i];if(void 0===s){const n=e.nodeName;return void console.error("THREE.PropertyBinding: Trying to update property for track: "+n+"."+i+" but it wasn't found.",t)}let a=this.Versioning.None;this.targetObject=t,void 0!==t.needsUpdate?a=this.Versioning.NeedsUpdate:void 0!==t.matrixWorldNeedsUpdate&&(a=this.Versioning.MatrixWorldNeedsUpdate);let o=this.BindingType.Direct;if(void 0!==r){if("morphTargetInfluences"===i){if(!t.geometry)return void console.error("THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.",this);if(!t.geometry.isBufferGeometry)return void console.error("THREE.PropertyBinding: Can not bind to morphTargetInfluences on THREE.Geometry. Use THREE.BufferGeometry instead.",this);if(!t.geometry.morphAttributes)return void console.error("THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.",this);void 0!==t.morphTargetDictionary[r]&&(r=t.morphTargetDictionary[r])}o=this.BindingType.ArrayElement,this.resolvedProperty=s,this.propertyIndex=r}else void 0!==s.fromArray&&void 0!==s.toArray?(o=this.BindingType.HasFromToArray,this.resolvedProperty=s):Array.isArray(s)?(o=this.BindingType.EntireArray,this.resolvedProperty=s):this.propertyName=i;this.getValue=this.GetterByBindingType[o],this.setValue=this.SetterByBindingTypeAndVersioning[o][a]}unbind(){this.node=null,this.getValue=this._getValue_unbound,this.setValue=this._setValue_unbound}}qc.Composite=class{constructor(t,e,n){const i=n||qc.parseTrackName(e);this._targetGroup=t,this._bindings=t.subscribe_(e,i)}getValue(t,e){this.bind();const n=this._targetGroup.nCachedObjects_,i=this._bindings[n];void 0!==i&&i.getValue(t,e)}setValue(t,e){const n=this._bindings;for(let i=this._targetGroup.nCachedObjects_,r=n.length;i!==r;++i)n[i].setValue(t,e)}bind(){const t=this._bindings;for(let e=this._targetGroup.nCachedObjects_,n=t.length;e!==n;++e)t[e].bind()}unbind(){const t=this._bindings;for(let e=this._targetGroup.nCachedObjects_,n=t.length;e!==n;++e)t[e].unbind()}},qc.prototype.BindingType={Direct:0,EntireArray:1,ArrayElement:2,HasFromToArray:3},qc.prototype.Versioning={None:0,NeedsUpdate:1,MatrixWorldNeedsUpdate:2},qc.prototype.GetterByBindingType=[qc.prototype._getValue_direct,qc.prototype._getValue_array,qc.prototype._getValue_arrayElement,qc.prototype._getValue_toArray],qc.prototype.SetterByBindingTypeAndVersioning=[[qc.prototype._setValue_direct,qc.prototype._setValue_direct_setNeedsUpdate,qc.prototype._setValue_direct_setMatrixWorldNeedsUpdate],[qc.prototype._setValue_array,qc.prototype._setValue_array_setNeedsUpdate,qc.prototype._setValue_array_setMatrixWorldNeedsUpdate],[qc.prototype._setValue_arrayElement,qc.prototype._setValue_arrayElement_setNeedsUpdate,qc.prototype._setValue_arrayElement_setMatrixWorldNeedsUpdate],[qc.prototype._setValue_fromArray,qc.prototype._setValue_fromArray_setNeedsUpdate,qc.prototype._setValue_fromArray_setMatrixWorldNeedsUpdate]];class Xc{constructor(){this.uuid=ct(),this._objects=Array.prototype.slice.call(arguments),this.nCachedObjects_=0;const t={};this._indicesByUUID=t;for(let e=0,n=arguments.length;e!==n;++e)t[arguments[e].uuid]=e;this._paths=[],this._parsedPaths=[],this._bindings=[],this._bindingsIndicesByPath={};const e=this;this.stats={objects:{get total(){return e._objects.length},get inUse(){return this.total-e.nCachedObjects_}},get bindingsPerObject(){return e._bindings.length}}}add(){const t=this._objects,e=this._indicesByUUID,n=this._paths,i=this._parsedPaths,r=this._bindings,s=r.length;let a,o=t.length,l=this.nCachedObjects_;for(let c=0,h=arguments.length;c!==h;++c){const h=arguments[c],u=h.uuid;let d=e[u];if(void 0===d){d=o++,e[u]=d,t.push(h);for(let t=0,e=s;t!==e;++t)r[t].push(new qc(h,n[t],i[t]))}else if(d<l){a=t[d];const o=--l,c=t[o];e[c.uuid]=d,t[d]=c,e[u]=o,t[o]=h;for(let t=0,e=s;t!==e;++t){const e=r[t],s=e[o];let a=e[d];e[d]=s,void 0===a&&(a=new qc(h,n[t],i[t])),e[o]=a}}else t[d]!==a&&console.error("THREE.AnimationObjectGroup: Different objects with the same UUID detected. Clean the caches or recreate your infrastructure when reloading scenes.")}this.nCachedObjects_=l}remove(){const t=this._objects,e=this._indicesByUUID,n=this._bindings,i=n.length;let r=this.nCachedObjects_;for(let s=0,a=arguments.length;s!==a;++s){const a=arguments[s],o=a.uuid,l=e[o];if(void 0!==l&&l>=r){const s=r++,c=t[s];e[c.uuid]=l,t[l]=c,e[o]=s,t[s]=a;for(let t=0,e=i;t!==e;++t){const e=n[t],i=e[s],r=e[l];e[l]=i,e[s]=r}}}this.nCachedObjects_=r}uncache(){const t=this._objects,e=this._indicesByUUID,n=this._bindings,i=n.length;let r=this.nCachedObjects_,s=t.length;for(let a=0,o=arguments.length;a!==o;++a){const o=arguments[a].uuid,l=e[o];if(void 0!==l)if(delete e[o],l<r){const a=--r,o=t[a],c=--s,h=t[c];e[o.uuid]=l,t[l]=o,e[h.uuid]=a,t[a]=h,t.pop();for(let t=0,e=i;t!==e;++t){const e=n[t],i=e[a],r=e[c];e[l]=i,e[a]=r,e.pop()}}else{const r=--s,a=t[r];r>0&&(e[a.uuid]=l),t[l]=a,t.pop();for(let t=0,e=i;t!==e;++t){const e=n[t];e[l]=e[r],e.pop()}}}this.nCachedObjects_=r}subscribe_(t,e){const n=this._bindingsIndicesByPath;let i=n[t];const r=this._bindings;if(void 0!==i)return r[i];const s=this._paths,a=this._parsedPaths,o=this._objects,l=o.length,c=this.nCachedObjects_,h=new Array(l);i=r.length,n[t]=i,s.push(t),a.push(e),r.push(h);for(let n=c,i=o.length;n!==i;++n){const i=o[n];h[n]=new qc(i,t,e)}return h}unsubscribe_(t){const e=this._bindingsIndicesByPath,n=e[t];if(void 0!==n){const i=this._paths,r=this._parsedPaths,s=this._bindings,a=s.length-1,o=s[a];e[t[a]]=n,s[n]=o,s.pop(),r[n]=r[a],r.pop(),i[n]=i[a],i.pop()}}}Xc.prototype.isAnimationObjectGroup=!0;class Yc{constructor(t,e,n=null,i=e.blendMode){this._mixer=t,this._clip=e,this._localRoot=n,this.blendMode=i;const r=e.tracks,s=r.length,a=new Array(s),o={endingStart:k,endingEnd:k};for(let t=0;t!==s;++t){const e=r[t].createInterpolant(null);a[t]=e,e.settings=o}this._interpolantSettings=o,this._interpolants=a,this._propertyBindings=new Array(s),this._cacheIndex=null,this._byClipCacheIndex=null,this._timeScaleInterpolant=null,this._weightInterpolant=null,this.loop=2201,this._loopCount=-1,this._startTime=null,this.time=0,this.timeScale=1,this._effectiveTimeScale=1,this.weight=1,this._effectiveWeight=1,this.repetitions=1/0,this.paused=!1,this.enabled=!0,this.clampWhenFinished=!1,this.zeroSlopeAtStart=!0,this.zeroSlopeAtEnd=!0}play(){return this._mixer._activateAction(this),this}stop(){return this._mixer._deactivateAction(this),this.reset()}reset(){return this.paused=!1,this.enabled=!0,this.time=0,this._loopCount=-1,this._startTime=null,this.stopFading().stopWarping()}isRunning(){return this.enabled&&!this.paused&&0!==this.timeScale&&null===this._startTime&&this._mixer._isActiveAction(this)}isScheduled(){return this._mixer._isActiveAction(this)}startAt(t){return this._startTime=t,this}setLoop(t,e){return this.loop=t,this.repetitions=e,this}setEffectiveWeight(t){return this.weight=t,this._effectiveWeight=this.enabled?t:0,this.stopFading()}getEffectiveWeight(){return this._effectiveWeight}fadeIn(t){return this._scheduleFading(t,0,1)}fadeOut(t){return this._scheduleFading(t,1,0)}crossFadeFrom(t,e,n){if(t.fadeOut(e),this.fadeIn(e),n){const n=this._clip.duration,i=t._clip.duration,r=i/n,s=n/i;t.warp(1,r,e),this.warp(s,1,e)}return this}crossFadeTo(t,e,n){return t.crossFadeFrom(this,e,n)}stopFading(){const t=this._weightInterpolant;return null!==t&&(this._weightInterpolant=null,this._mixer._takeBackControlInterpolant(t)),this}setEffectiveTimeScale(t){return this.timeScale=t,this._effectiveTimeScale=this.paused?0:t,this.stopWarping()}getEffectiveTimeScale(){return this._effectiveTimeScale}setDuration(t){return this.timeScale=this._clip.duration/t,this.stopWarping()}syncWith(t){return this.time=t.time,this.timeScale=t.timeScale,this.stopWarping()}halt(t){return this.warp(this._effectiveTimeScale,0,t)}warp(t,e,n){const i=this._mixer,r=i.time,s=this.timeScale;let a=this._timeScaleInterpolant;null===a&&(a=i._lendControlInterpolant(),this._timeScaleInterpolant=a);const o=a.parameterPositions,l=a.sampleValues;return o[0]=r,o[1]=r+n,l[0]=t/s,l[1]=e/s,this}stopWarping(){const t=this._timeScaleInterpolant;return null!==t&&(this._timeScaleInterpolant=null,this._mixer._takeBackControlInterpolant(t)),this}getMixer(){return this._mixer}getClip(){return this._clip}getRoot(){return this._localRoot||this._mixer._root}_update(t,e,n,i){if(!this.enabled)return void this._updateWeight(t);const r=this._startTime;if(null!==r){const i=(t-r)*n;if(i<0||0===n)return;this._startTime=null,e=n*i}e*=this._updateTimeScale(t);const s=this._updateTime(e),a=this._updateWeight(t);if(a>0){const t=this._interpolants,e=this._propertyBindings;switch(this.blendMode){case q:for(let n=0,i=t.length;n!==i;++n)t[n].evaluate(s),e[n].accumulateAdditive(a);break;case j:default:for(let n=0,r=t.length;n!==r;++n)t[n].evaluate(s),e[n].accumulate(i,a)}}}_updateWeight(t){let e=0;if(this.enabled){e=this.weight;const n=this._weightInterpolant;if(null!==n){const i=n.evaluate(t)[0];e*=i,t>n.parameterPositions[1]&&(this.stopFading(),0===i&&(this.enabled=!1))}}return this._effectiveWeight=e,e}_updateTimeScale(t){let e=0;if(!this.paused){e=this.timeScale;const n=this._timeScaleInterpolant;if(null!==n){e*=n.evaluate(t)[0],t>n.parameterPositions[1]&&(this.stopWarping(),0===e?this.paused=!0:this.timeScale=e)}}return this._effectiveTimeScale=e,e}_updateTime(t){const e=this._clip.duration,n=this.loop;let i=this.time+t,r=this._loopCount;const s=2202===n;if(0===t)return-1===r?i:s&&1==(1&r)?e-i:i;if(2200===n){-1===r&&(this._loopCount=0,this._setEndings(!0,!0,!1));t:{if(i>=e)i=e;else{if(!(i<0)){this.time=i;break t}i=0}this.clampWhenFinished?this.paused=!0:this.enabled=!1,this.time=i,this._mixer.dispatchEvent({type:"finished",action:this,direction:t<0?-1:1})}}else{if(-1===r&&(t>=0?(r=0,this._setEndings(!0,0===this.repetitions,s)):this._setEndings(0===this.repetitions,!0,s)),i>=e||i<0){const n=Math.floor(i/e);i-=e*n,r+=Math.abs(n);const a=this.repetitions-r;if(a<=0)this.clampWhenFinished?this.paused=!0:this.enabled=!1,i=t>0?e:0,this.time=i,this._mixer.dispatchEvent({type:"finished",action:this,direction:t>0?1:-1});else{if(1===a){const e=t<0;this._setEndings(e,!e,s)}else this._setEndings(!1,!1,s);this._loopCount=r,this.time=i,this._mixer.dispatchEvent({type:"loop",action:this,loopDelta:n})}}else this.time=i;if(s&&1==(1&r))return e-i}return i}_setEndings(t,e,n){const i=this._interpolantSettings;n?(i.endingStart=V,i.endingEnd=V):(i.endingStart=t?this.zeroSlopeAtStart?V:k:W,i.endingEnd=e?this.zeroSlopeAtEnd?V:k:W)}_scheduleFading(t,e,n){const i=this._mixer,r=i.time;let s=this._weightInterpolant;null===s&&(s=i._lendControlInterpolant(),this._weightInterpolant=s);const a=s.parameterPositions,o=s.sampleValues;return a[0]=r,o[0]=e,a[1]=r+t,o[1]=n,this}}class Jc extends rt{constructor(t){super(),this._root=t,this._initMemoryManager(),this._accuIndex=0,this.time=0,this.timeScale=1}_bindAction(t,e){const n=t._localRoot||this._root,i=t._clip.tracks,r=i.length,s=t._propertyBindings,a=t._interpolants,o=n.uuid,l=this._bindingsByRootAndName;let c=l[o];void 0===c&&(c={},l[o]=c);for(let t=0;t!==r;++t){const r=i[t],l=r.name;let h=c[l];if(void 0!==h)s[t]=h;else{if(h=s[t],void 0!==h){null===h._cacheIndex&&(++h.referenceCount,this._addInactiveBinding(h,o,l));continue}const i=e&&e._propertyBindings[t].binding.parsedPath;h=new Bc(qc.create(n,l,i),r.ValueTypeName,r.getValueSize()),++h.referenceCount,this._addInactiveBinding(h,o,l),s[t]=h}a[t].resultBuffer=h.buffer}}_activateAction(t){if(!this._isActiveAction(t)){if(null===t._cacheIndex){const e=(t._localRoot||this._root).uuid,n=t._clip.uuid,i=this._actionsByClip[n];this._bindAction(t,i&&i.knownActions[0]),this._addInactiveAction(t,n,e)}const e=t._propertyBindings;for(let t=0,n=e.length;t!==n;++t){const n=e[t];0==n.useCount++&&(this._lendBinding(n),n.saveOriginalState())}this._lendAction(t)}}_deactivateAction(t){if(this._isActiveAction(t)){const e=t._propertyBindings;for(let t=0,n=e.length;t!==n;++t){const n=e[t];0==--n.useCount&&(n.restoreOriginalState(),this._takeBackBinding(n))}this._takeBackAction(t)}}_initMemoryManager(){this._actions=[],this._nActiveActions=0,this._actionsByClip={},this._bindings=[],this._nActiveBindings=0,this._bindingsByRootAndName={},this._controlInterpolants=[],this._nActiveControlInterpolants=0;const t=this;this.stats={actions:{get total(){return t._actions.length},get inUse(){return t._nActiveActions}},bindings:{get total(){return t._bindings.length},get inUse(){return t._nActiveBindings}},controlInterpolants:{get total(){return t._controlInterpolants.length},get inUse(){return t._nActiveControlInterpolants}}}}_isActiveAction(t){const e=t._cacheIndex;return null!==e&&e<this._nActiveActions}_addInactiveAction(t,e,n){const i=this._actions,r=this._actionsByClip;let s=r[e];if(void 0===s)s={knownActions:[t],actionByRoot:{}},t._byClipCacheIndex=0,r[e]=s;else{const e=s.knownActions;t._byClipCacheIndex=e.length,e.push(t)}t._cacheIndex=i.length,i.push(t),s.actionByRoot[n]=t}_removeInactiveAction(t){const e=this._actions,n=e[e.length-1],i=t._cacheIndex;n._cacheIndex=i,e[i]=n,e.pop(),t._cacheIndex=null;const r=t._clip.uuid,s=this._actionsByClip,a=s[r],o=a.knownActions,l=o[o.length-1],c=t._byClipCacheIndex;l._byClipCacheIndex=c,o[c]=l,o.pop(),t._byClipCacheIndex=null;delete a.actionByRoot[(t._localRoot||this._root).uuid],0===o.length&&delete s[r],this._removeInactiveBindingsForAction(t)}_removeInactiveBindingsForAction(t){const e=t._propertyBindings;for(let t=0,n=e.length;t!==n;++t){const n=e[t];0==--n.referenceCount&&this._removeInactiveBinding(n)}}_lendAction(t){const e=this._actions,n=t._cacheIndex,i=this._nActiveActions++,r=e[i];t._cacheIndex=i,e[i]=t,r._cacheIndex=n,e[n]=r}_takeBackAction(t){const e=this._actions,n=t._cacheIndex,i=--this._nActiveActions,r=e[i];t._cacheIndex=i,e[i]=t,r._cacheIndex=n,e[n]=r}_addInactiveBinding(t,e,n){const i=this._bindingsByRootAndName,r=this._bindings;let s=i[e];void 0===s&&(s={},i[e]=s),s[n]=t,t._cacheIndex=r.length,r.push(t)}_removeInactiveBinding(t){const e=this._bindings,n=t.binding,i=n.rootNode.uuid,r=n.path,s=this._bindingsByRootAndName,a=s[i],o=e[e.length-1],l=t._cacheIndex;o._cacheIndex=l,e[l]=o,e.pop(),delete a[r],0===Object.keys(a).length&&delete s[i]}_lendBinding(t){const e=this._bindings,n=t._cacheIndex,i=this._nActiveBindings++,r=e[i];t._cacheIndex=i,e[i]=t,r._cacheIndex=n,e[n]=r}_takeBackBinding(t){const e=this._bindings,n=t._cacheIndex,i=--this._nActiveBindings,r=e[i];t._cacheIndex=i,e[i]=t,r._cacheIndex=n,e[n]=r}_lendControlInterpolant(){const t=this._controlInterpolants,e=this._nActiveControlInterpolants++;let n=t[e];return void 0===n&&(n=new pl(new Float32Array(2),new Float32Array(2),1,this._controlInterpolantsResultBuffer),n.__cacheIndex=e,t[e]=n),n}_takeBackControlInterpolant(t){const e=this._controlInterpolants,n=t.__cacheIndex,i=--this._nActiveControlInterpolants,r=e[i];t.__cacheIndex=i,e[i]=t,r.__cacheIndex=n,e[n]=r}clipAction(t,e,n){const i=e||this._root,r=i.uuid;let s="string"==typeof t?wl.findByName(i,t):t;const a=null!==s?s.uuid:t,o=this._actionsByClip[a];let l=null;if(void 0===n&&(n=null!==s?s.blendMode:j),void 0!==o){const t=o.actionByRoot[r];if(void 0!==t&&t.blendMode===n)return t;l=o.knownActions[0],null===s&&(s=l._clip)}if(null===s)return null;const c=new Yc(this,s,e,n);return this._bindAction(c,l),this._addInactiveAction(c,a,r),c}existingAction(t,e){const n=e||this._root,i=n.uuid,r="string"==typeof t?wl.findByName(n,t):t,s=r?r.uuid:t,a=this._actionsByClip[s];return void 0!==a&&a.actionByRoot[i]||null}stopAllAction(){const t=this._actions;for(let e=this._nActiveActions-1;e>=0;--e)t[e].stop();return this}update(t){t*=this.timeScale;const e=this._actions,n=this._nActiveActions,i=this.time+=t,r=Math.sign(t),s=this._accuIndex^=1;for(let a=0;a!==n;++a){e[a]._update(i,t,r,s)}const a=this._bindings,o=this._nActiveBindings;for(let t=0;t!==o;++t)a[t].apply(s);return this}setTime(t){this.time=0;for(let t=0;t<this._actions.length;t++)this._actions[t].time=0;return this.update(t)}getRoot(){return this._root}uncacheClip(t){const e=this._actions,n=t.uuid,i=this._actionsByClip,r=i[n];if(void 0!==r){const t=r.knownActions;for(let n=0,i=t.length;n!==i;++n){const i=t[n];this._deactivateAction(i);const r=i._cacheIndex,s=e[e.length-1];i._cacheIndex=null,i._byClipCacheIndex=null,s._cacheIndex=r,e[r]=s,e.pop(),this._removeInactiveBindingsForAction(i)}delete i[n]}}uncacheRoot(t){const e=t.uuid,n=this._actionsByClip;for(const t in n){const i=n[t].actionByRoot[e];void 0!==i&&(this._deactivateAction(i),this._removeInactiveAction(i))}const i=this._bindingsByRootAndName[e];if(void 0!==i)for(const t in i){const e=i[t];e.restoreOriginalState(),this._removeInactiveBinding(e)}}uncacheAction(t,e){const n=this.existingAction(t,e);null!==n&&(this._deactivateAction(n),this._removeInactiveAction(n))}}Jc.prototype._controlInterpolantsResultBuffer=new Float32Array(1);class Zc{constructor(t){"string"==typeof t&&(console.warn("THREE.Uniform: Type parameter is no longer needed."),t=arguments[1]),this.value=t}clone(){return new Zc(void 0===this.value.clone?this.value:this.value.clone())}}class Qc extends Es{constructor(t,e,n=1){super(t,e),this.meshPerAttribute=n}copy(t){return super.copy(t),this.meshPerAttribute=t.meshPerAttribute,this}clone(t){const e=super.clone(t);return e.meshPerAttribute=this.meshPerAttribute,e}toJSON(t){const e=super.toJSON(t);return e.isInstancedInterleavedBuffer=!0,e.meshPerAttribute=this.meshPerAttribute,e}}Qc.prototype.isInstancedInterleavedBuffer=!0;class Kc{constructor(t,e,n,i,r){this.buffer=t,this.type=e,this.itemSize=n,this.elementSize=i,this.count=r,this.version=0}set needsUpdate(t){!0===t&&this.version++}setBuffer(t){return this.buffer=t,this}setType(t,e){return this.type=t,this.elementSize=e,this}setItemSize(t){return this.itemSize=t,this}setCount(t){return this.count=t,this}}Kc.prototype.isGLBufferAttribute=!0;function $c(t,e){return t.distance-e.distance}function th(t,e,n,i){if(t.layers.test(e.layers)&&t.raycast(e,n),!0===i){const i=t.children;for(let t=0,r=i.length;t<r;t++)th(i[t],e,n,!0)}}const eh=new vt;class nh{constructor(t=new vt(1/0,1/0),e=new vt(-1/0,-1/0)){this.min=t,this.max=e}set(t,e){return this.min.copy(t),this.max.copy(e),this}setFromPoints(t){this.makeEmpty();for(let e=0,n=t.length;e<n;e++)this.expandByPoint(t[e]);return this}setFromCenterAndSize(t,e){const n=eh.copy(e).multiplyScalar(.5);return this.min.copy(t).sub(n),this.max.copy(t).add(n),this}clone(){return(new this.constructor).copy(this)}copy(t){return this.min.copy(t.min),this.max.copy(t.max),this}makeEmpty(){return this.min.x=this.min.y=1/0,this.max.x=this.max.y=-1/0,this}isEmpty(){return this.max.x<this.min.x||this.max.y<this.min.y}getCenter(t){return this.isEmpty()?t.set(0,0):t.addVectors(this.min,this.max).multiplyScalar(.5)}getSize(t){return this.isEmpty()?t.set(0,0):t.subVectors(this.max,this.min)}expandByPoint(t){return this.min.min(t),this.max.max(t),this}expandByVector(t){return this.min.sub(t),this.max.add(t),this}expandByScalar(t){return this.min.addScalar(-t),this.max.addScalar(t),this}containsPoint(t){return!(t.x<this.min.x||t.x>this.max.x||t.y<this.min.y||t.y>this.max.y)}containsBox(t){return this.min.x<=t.min.x&&t.max.x<=this.max.x&&this.min.y<=t.min.y&&t.max.y<=this.max.y}getParameter(t,e){return e.set((t.x-this.min.x)/(this.max.x-this.min.x),(t.y-this.min.y)/(this.max.y-this.min.y))}intersectsBox(t){return!(t.max.x<this.min.x||t.min.x>this.max.x||t.max.y<this.min.y||t.min.y>this.max.y)}clampPoint(t,e){return e.copy(t).clamp(this.min,this.max)}distanceToPoint(t){return eh.copy(t).clamp(this.min,this.max).sub(t).length()}intersect(t){return this.min.max(t.min),this.max.min(t.max),this}union(t){return this.min.min(t.min),this.max.max(t.max),this}translate(t){return this.min.add(t),this.max.add(t),this}equals(t){return t.min.equals(this.min)&&t.max.equals(this.max)}}nh.prototype.isBox2=!0;const ih=new Rt,rh=new Rt;class sh{constructor(t=new Rt,e=new Rt){this.start=t,this.end=e}set(t,e){return this.start.copy(t),this.end.copy(e),this}copy(t){return this.start.copy(t.start),this.end.copy(t.end),this}getCenter(t){return t.addVectors(this.start,this.end).multiplyScalar(.5)}delta(t){return t.subVectors(this.end,this.start)}distanceSq(){return this.start.distanceToSquared(this.end)}distance(){return this.start.distanceTo(this.end)}at(t,e){return this.delta(e).multiplyScalar(t).add(this.start)}closestPointToPointParameter(t,e){ih.subVectors(t,this.start),rh.subVectors(this.end,this.start);const n=rh.dot(rh);let i=rh.dot(ih)/n;return e&&(i=ht(i,0,1)),i}closestPointToPoint(t,e,n){const i=this.closestPointToPointParameter(t,e);return this.delta(n).multiplyScalar(i).add(this.start)}applyMatrix4(t){return this.start.applyMatrix4(t),this.end.applyMatrix4(t),this}equals(t){return t.start.equals(this.start)&&t.end.equals(this.end)}clone(){return(new this.constructor).copy(this)}}class ah extends Pe{constructor(t){super(),this.material=t,this.render=function(){},this.hasPositions=!1,this.hasNormals=!1,this.hasColors=!1,this.hasUvs=!1,this.positionArray=null,this.normalArray=null,this.colorArray=null,this.uvArray=null,this.count=0}}ah.prototype.isImmediateRenderObject=!0;const oh=new Rt;const lh=new Rt,ch=new ae,hh=new ae;class uh extends xa{constructor(t){const e=dh(t),n=new wn,i=[],r=[],s=new Qe(0,0,1),a=new Qe(0,1,0);for(let t=0;t<e.length;t++){const n=e[t];n.parent&&n.parent.isBone&&(i.push(0,0,0),i.push(0,0,0),r.push(s.r,s.g,s.b),r.push(a.r,a.g,a.b))}n.setAttribute("position",new un(i,3)),n.setAttribute("color",new un(r,3));super(n,new ha({vertexColors:!0,depthTest:!1,depthWrite:!1,toneMapped:!1,transparent:!0})),this.type="SkeletonHelper",this.isSkeletonHelper=!0,this.root=t,this.bones=e,this.matrix=t.matrixWorld,this.matrixAutoUpdate=!1}updateMatrixWorld(t){const e=this.bones,n=this.geometry,i=n.getAttribute("position");hh.copy(this.root.matrixWorld).invert();for(let t=0,n=0;t<e.length;t++){const r=e[t];r.parent&&r.parent.isBone&&(ch.multiplyMatrices(hh,r.matrixWorld),lh.setFromMatrixPosition(ch),i.setXYZ(n,lh.x,lh.y,lh.z),ch.multiplyMatrices(hh,r.parent.matrixWorld),lh.setFromMatrixPosition(ch),i.setXYZ(n+1,lh.x,lh.y,lh.z),n+=2)}n.getAttribute("position").needsUpdate=!0,super.updateMatrixWorld(t)}}function dh(t){const e=[];t&&t.isBone&&e.push(t);for(let n=0;n<t.children.length;n++)e.push.apply(e,dh(t.children[n]));return e}const ph=new Rt,mh=new Qe,fh=new Qe;class gh extends xa{constructor(t=10,e=10,n=4473924,i=8947848){n=new Qe(n),i=new Qe(i);const r=e/2,s=t/e,a=t/2,o=[],l=[];for(let t=0,c=0,h=-a;t<=e;t++,h+=s){o.push(-a,0,h,a,0,h),o.push(h,0,-a,h,0,a);const e=t===r?n:i;e.toArray(l,c),c+=3,e.toArray(l,c),c+=3,e.toArray(l,c),c+=3,e.toArray(l,c),c+=3}const c=new wn;c.setAttribute("position",new un(o,3)),c.setAttribute("color",new un(l,3));super(c,new ha({vertexColors:!0,toneMapped:!1})),this.type="GridHelper"}}const vh=new Rt,yh=new Rt,xh=new Rt;const _h=new Rt,bh=new Yn;function Mh(t,e,n,i,r,s,a){_h.set(r,s,a).unproject(i);const o=e[t];if(void 0!==o){const t=n.getAttribute("position");for(let e=0,n=o.length;e<n;e++)t.setXYZ(o[e],_h.x,_h.y,_h.z)}}const wh=new Dt;class Sh extends xa{constructor(t,e=16776960){const n=new Uint16Array([0,1,1,2,2,3,3,0,4,5,5,6,6,7,7,4,0,4,1,5,2,6,3,7]),i=new Float32Array(24),r=new wn;r.setIndex(new en(n,1)),r.setAttribute("position",new en(i,3)),super(r,new ha({color:e,toneMapped:!1})),this.object=t,this.type="BoxHelper",this.matrixAutoUpdate=!1,this.update()}update(t){if(void 0!==t&&console.warn("THREE.BoxHelper: .update() has no longer arguments."),void 0!==this.object&&wh.setFromObject(this.object),wh.isEmpty())return;const e=wh.min,n=wh.max,i=this.geometry.attributes.position,r=i.array;r[0]=n.x,r[1]=n.y,r[2]=n.z,r[3]=e.x,r[4]=n.y,r[5]=n.z,r[6]=e.x,r[7]=e.y,r[8]=n.z,r[9]=n.x,r[10]=e.y,r[11]=n.z,r[12]=n.x,r[13]=n.y,r[14]=e.z,r[15]=e.x,r[16]=n.y,r[17]=e.z,r[18]=e.x,r[19]=e.y,r[20]=e.z,r[21]=n.x,r[22]=e.y,r[23]=e.z,i.needsUpdate=!0,this.geometry.computeBoundingSphere()}setFromObject(t){return this.object=t,this.update(),this}copy(t){return xa.prototype.copy.call(this,t),this.object=t.object,this}}const Th=new Rt;let Eh,Ah;class Lh extends xa{constructor(t=1){const e=[0,0,0,t,0,0,0,0,0,0,t,0,0,0,0,0,0,t],n=new wn;n.setAttribute("position",new un(e,3)),n.setAttribute("color",new un([1,0,0,1,.6,0,0,1,0,.6,1,0,0,0,1,0,.6,1],3));super(n,new ha({vertexColors:!0,toneMapped:!1})),this.type="AxesHelper"}setColors(t,e,n){const i=new Qe,r=this.geometry.attributes.color.array;return i.set(t),i.toArray(r,0),i.toArray(r,3),i.set(e),i.toArray(r,6),i.toArray(r,9),i.set(n),i.toArray(r,12),i.toArray(r,15),this.geometry.attributes.color.needsUpdate=!0,this}dispose(){this.geometry.dispose(),this.material.dispose()}}const Rh=new Float32Array(1),Ch=new Int32Array(Rh.buffer);const Ph=Math.pow(2,8),Dh=[.125,.215,.35,.446,.526,.582],Ih=5+Dh.length,Nh=20,Bh={[X]:0,[Y]:1,[Z]:2,[Q]:3,[K]:4,[$]:5,[J]:6},zh=new Ke({side:1,depthWrite:!1,depthTest:!1}),Fh=new Gn(new Vn,zh),Oh=new Ql,{_lodPlanes:Hh,_sizeLods:Uh,_sigmas:Gh}=Jh(),kh=new Qe;let Vh=null;const Wh=(1+Math.sqrt(5))/2,jh=1/Wh,qh=[new Rt(1,1,1),new Rt(-1,1,1),new Rt(1,1,-1),new Rt(-1,1,-1),new Rt(0,Wh,jh),new Rt(0,Wh,-jh),new Rt(jh,0,Wh),new Rt(-jh,0,Wh),new Rt(Wh,jh,0),new Rt(-Wh,jh,0)];function Xh(t){const e=Math.max(t.r,t.g,t.b),n=Math.min(Math.max(Math.ceil(Math.log2(e)),-128),127);t.multiplyScalar(Math.pow(2,-n));return(n+128)/255}function Yh(t){return void 0!==t&&t.type===x&&(t.encoding===X||t.encoding===Y||t.encoding===J)}function Jh(){const t=[],e=[],n=[];let i=8;for(let r=0;r<Ih;r++){const s=Math.pow(2,i);e.push(s);let a=1/s;r>4?a=Dh[r-8+4-1]:0==r&&(a=0),n.push(a);const o=1/(s-1),l=-o/2,c=1+o/2,h=[l,l,c,l,c,c,l,l,c,c,l,c],u=6,d=6,p=3,m=2,f=1,g=new Float32Array(p*d*u),v=new Float32Array(m*d*u),y=new Float32Array(f*d*u);for(let t=0;t<u;t++){const e=t%3*2/3-1,n=t>2?0:-1,i=[e,n,0,e+2/3,n,0,e+2/3,n+1,0,e,n,0,e+2/3,n+1,0,e,n+1,0];g.set(i,p*d*t),v.set(h,m*d*t);const r=[t,t,t,t,t,t];y.set(r,f*d*t)}const x=new wn;x.setAttribute("position",new en(g,p)),x.setAttribute("uv",new en(v,m)),x.setAttribute("faceIndex",new en(y,f)),t.push(x),i>4&&i--}return{_lodPlanes:t,_sizeLods:e,_sigmas:n}}function Zh(t){const e=new Tt(3*Ph,3*Ph,t);return e.texture.mapping=l,e.texture.name="PMREM.cubeUv",e.scissorTest=!0,e}function Qh(t,e,n,i,r){t.viewport.set(e,n,i,r),t.scissor.set(e,n,i,r)}function Kh(){const t=new vt(1,1);return new tl({name:"EquirectangularToCubeUV",uniforms:{envMap:{value:null},texelSize:{value:t},inputEncoding:{value:Bh[3e3]},outputEncoding:{value:Bh[3e3]}},vertexShader:tu(),fragmentShader:`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform sampler2D envMap;\n\t\t\tuniform vec2 texelSize;\n\n\t\t\t${eu()}\n\n\t\t\t#include <common>\n\n\t\t\tvoid main() {\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\n\t\t\t\tvec3 outputDirection = normalize( vOutputDirection );\n\t\t\t\tvec2 uv = equirectUv( outputDirection );\n\n\t\t\t\tvec2 f = fract( uv / texelSize - 0.5 );\n\t\t\t\tuv -= f * texelSize;\n\t\t\t\tvec3 tl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.x += texelSize.x;\n\t\t\t\tvec3 tr = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.y += texelSize.y;\n\t\t\t\tvec3 br = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.x -= texelSize.x;\n\t\t\t\tvec3 bl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\n\t\t\t\tvec3 tm = mix( tl, tr, f.x );\n\t\t\t\tvec3 bm = mix( bl, br, f.x );\n\t\t\t\tgl_FragColor.rgb = mix( tm, bm, f.y );\n\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t`,blending:0,depthTest:!1,depthWrite:!1})}function $h(){return new tl({name:"CubemapToCubeUV",uniforms:{envMap:{value:null},inputEncoding:{value:Bh[3e3]},outputEncoding:{value:Bh[3e3]}},vertexShader:tu(),fragmentShader:`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform samplerCube envMap;\n\n\t\t\t${eu()}\n\n\t\t\tvoid main() {\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t\t\t\tgl_FragColor.rgb = envMapTexelToLinear( textureCube( envMap, vec3( - vOutputDirection.x, vOutputDirection.yz ) ) ).rgb;\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t`,blending:0,depthTest:!1,depthWrite:!1})}function tu(){return"\n\n\t\tprecision mediump float;\n\t\tprecision mediump int;\n\n\t\tattribute vec3 position;\n\t\tattribute vec2 uv;\n\t\tattribute float faceIndex;\n\n\t\tvarying vec3 vOutputDirection;\n\n\t\t// RH coordinate system; PMREM face-indexing convention\n\t\tvec3 getDirection( vec2 uv, float face ) {\n\n\t\t\tuv = 2.0 * uv - 1.0;\n\n\t\t\tvec3 direction = vec3( uv, 1.0 );\n\n\t\t\tif ( face == 0.0 ) {\n\n\t\t\t\tdirection = direction.zyx; // ( 1, v, u ) pos x\n\n\t\t\t} else if ( face == 1.0 ) {\n\n\t\t\t\tdirection = direction.xzy;\n\t\t\t\tdirection.xz *= -1.0; // ( -u, 1, -v ) pos y\n\n\t\t\t} else if ( face == 2.0 ) {\n\n\t\t\t\tdirection.x *= -1.0; // ( -u, v, 1 ) pos z\n\n\t\t\t} else if ( face == 3.0 ) {\n\n\t\t\t\tdirection = direction.zyx;\n\t\t\t\tdirection.xz *= -1.0; // ( -1, v, -u ) neg x\n\n\t\t\t} else if ( face == 4.0 ) {\n\n\t\t\t\tdirection = direction.xzy;\n\t\t\t\tdirection.xy *= -1.0; // ( -u, -1, v ) neg y\n\n\t\t\t} else if ( face == 5.0 ) {\n\n\t\t\t\tdirection.z *= -1.0; // ( u, v, -1 ) neg z\n\n\t\t\t}\n\n\t\t\treturn direction;\n\n\t\t}\n\n\t\tvoid main() {\n\n\t\t\tvOutputDirection = getDirection( uv, faceIndex );\n\t\t\tgl_Position = vec4( position, 1.0 );\n\n\t\t}\n\t"}function eu(){return"\n\n\t\tuniform int inputEncoding;\n\t\tuniform int outputEncoding;\n\n\t\t#include <encodings_pars_fragment>\n\n\t\tvec4 inputTexelToLinear( vec4 value ) {\n\n\t\t\tif ( inputEncoding == 0 ) {\n\n\t\t\t\treturn value;\n\n\t\t\t} else if ( inputEncoding == 1 ) {\n\n\t\t\t\treturn sRGBToLinear( value );\n\n\t\t\t} else if ( inputEncoding == 2 ) {\n\n\t\t\t\treturn RGBEToLinear( value );\n\n\t\t\t} else if ( inputEncoding == 3 ) {\n\n\t\t\t\treturn RGBMToLinear( value, 7.0 );\n\n\t\t\t} else if ( inputEncoding == 4 ) {\n\n\t\t\t\treturn RGBMToLinear( value, 16.0 );\n\n\t\t\t} else if ( inputEncoding == 5 ) {\n\n\t\t\t\treturn RGBDToLinear( value, 256.0 );\n\n\t\t\t} else {\n\n\t\t\t\treturn GammaToLinear( value, 2.2 );\n\n\t\t\t}\n\n\t\t}\n\n\t\tvec4 linearToOutputTexel( vec4 value ) {\n\n\t\t\tif ( outputEncoding == 0 ) {\n\n\t\t\t\treturn value;\n\n\t\t\t} else if ( outputEncoding == 1 ) {\n\n\t\t\t\treturn LinearTosRGB( value );\n\n\t\t\t} else if ( outputEncoding == 2 ) {\n\n\t\t\t\treturn LinearToRGBE( value );\n\n\t\t\t} else if ( outputEncoding == 3 ) {\n\n\t\t\t\treturn LinearToRGBM( value, 7.0 );\n\n\t\t\t} else if ( outputEncoding == 4 ) {\n\n\t\t\t\treturn LinearToRGBM( value, 16.0 );\n\n\t\t\t} else if ( outputEncoding == 5 ) {\n\n\t\t\t\treturn LinearToRGBD( value, 256.0 );\n\n\t\t\t} else {\n\n\t\t\t\treturn LinearToGamma( value, 2.2 );\n\n\t\t\t}\n\n\t\t}\n\n\t\tvec4 envMapTexelToLinear( vec4 color ) {\n\n\t\t\treturn inputTexelToLinear( color );\n\n\t\t}\n\t"}ka.create=function(t,e){return console.log("THREE.Curve.create() has been deprecated"),t.prototype=Object.create(ka.prototype),t.prototype.constructor=t,t.prototype.getPoint=e,t},zl.prototype.fromPoints=function(t){return console.warn("THREE.Path: .fromPoints() has been renamed to .setFromPoints()."),this.setFromPoints(t)},gh.prototype.setColors=function(){console.error("THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.")},uh.prototype.update=function(){console.error("THREE.SkeletonHelper: update() no longer needs to be called.")},Ll.prototype.extractUrlBase=function(t){return console.warn("THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead."),sc.extractUrlBase(t)},Ll.Handlers={add:function(){console.error("THREE.Loader: Handlers.add() has been removed. Use LoadingManager.addHandler() instead.")},get:function(){console.error("THREE.Loader: Handlers.get() has been removed. Use LoadingManager.getHandler() instead.")}},nh.prototype.center=function(t){return console.warn("THREE.Box2: .center() has been renamed to .getCenter()."),this.getCenter(t)},nh.prototype.empty=function(){return console.warn("THREE.Box2: .empty() has been renamed to .isEmpty()."),this.isEmpty()},nh.prototype.isIntersectionBox=function(t){return console.warn("THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox()."),this.intersectsBox(t)},nh.prototype.size=function(t){return console.warn("THREE.Box2: .size() has been renamed to .getSize()."),this.getSize(t)},Dt.prototype.center=function(t){return console.warn("THREE.Box3: .center() has been renamed to .getCenter()."),this.getCenter(t)},Dt.prototype.empty=function(){return console.warn("THREE.Box3: .empty() has been renamed to .isEmpty()."),this.isEmpty()},Dt.prototype.isIntersectionBox=function(t){return console.warn("THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox()."),this.intersectsBox(t)},Dt.prototype.isIntersectionSphere=function(t){return console.warn("THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere()."),this.intersectsSphere(t)},Dt.prototype.size=function(t){return console.warn("THREE.Box3: .size() has been renamed to .getSize()."),this.getSize(t)},Qt.prototype.empty=function(){return console.warn("THREE.Sphere: .empty() has been renamed to .isEmpty()."),this.isEmpty()},ai.prototype.setFromMatrix=function(t){return console.warn("THREE.Frustum: .setFromMatrix() has been renamed to .setFromProjectionMatrix()."),this.setFromProjectionMatrix(t)},sh.prototype.center=function(t){return console.warn("THREE.Line3: .center() has been renamed to .getCenter()."),this.getCenter(t)},yt.prototype.flattenToArrayOffset=function(t,e){return console.warn("THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead."),this.toArray(t,e)},yt.prototype.multiplyVector3=function(t){return console.warn("THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead."),t.applyMatrix3(this)},yt.prototype.multiplyVector3Array=function(){console.error("THREE.Matrix3: .multiplyVector3Array() has been removed.")},yt.prototype.applyToBufferAttribute=function(t){return console.warn("THREE.Matrix3: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix3( matrix ) instead."),t.applyMatrix3(this)},yt.prototype.applyToVector3Array=function(){console.error("THREE.Matrix3: .applyToVector3Array() has been removed.")},yt.prototype.getInverse=function(t){return console.warn("THREE.Matrix3: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead."),this.copy(t).invert()},ae.prototype.extractPosition=function(t){return console.warn("THREE.Matrix4: .extractPosition() has been renamed to .copyPosition()."),this.copyPosition(t)},ae.prototype.flattenToArrayOffset=function(t,e){return console.warn("THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead."),this.toArray(t,e)},ae.prototype.getPosition=function(){return console.warn("THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead."),(new Rt).setFromMatrixColumn(this,3)},ae.prototype.setRotationFromQuaternion=function(t){return console.warn("THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion()."),this.makeRotationFromQuaternion(t)},ae.prototype.multiplyToArray=function(){console.warn("THREE.Matrix4: .multiplyToArray() has been removed.")},ae.prototype.multiplyVector3=function(t){return console.warn("THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead."),t.applyMatrix4(this)},ae.prototype.multiplyVector4=function(t){return console.warn("THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead."),t.applyMatrix4(this)},ae.prototype.multiplyVector3Array=function(){console.error("THREE.Matrix4: .multiplyVector3Array() has been removed.")},ae.prototype.rotateAxis=function(t){console.warn("THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead."),t.transformDirection(this)},ae.prototype.crossVector=function(t){return console.warn("THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead."),t.applyMatrix4(this)},ae.prototype.translate=function(){console.error("THREE.Matrix4: .translate() has been removed.")},ae.prototype.rotateX=function(){console.error("THREE.Matrix4: .rotateX() has been removed.")},ae.prototype.rotateY=function(){console.error("THREE.Matrix4: .rotateY() has been removed.")},ae.prototype.rotateZ=function(){console.error("THREE.Matrix4: .rotateZ() has been removed.")},ae.prototype.rotateByAxis=function(){console.error("THREE.Matrix4: .rotateByAxis() has been removed.")},ae.prototype.applyToBufferAttribute=function(t){return console.warn("THREE.Matrix4: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix4( matrix ) instead."),t.applyMatrix4(this)},ae.prototype.applyToVector3Array=function(){console.error("THREE.Matrix4: .applyToVector3Array() has been removed.")},ae.prototype.makeFrustum=function(t,e,n,i,r,s){return console.warn("THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead."),this.makePerspective(t,e,i,n,r,s)},ae.prototype.getInverse=function(t){return console.warn("THREE.Matrix4: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead."),this.copy(t).invert()},ii.prototype.isIntersectionLine=function(t){return console.warn("THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine()."),this.intersectsLine(t)},Lt.prototype.multiplyVector3=function(t){return console.warn("THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead."),t.applyQuaternion(this)},Lt.prototype.inverse=function(){return console.warn("THREE.Quaternion: .inverse() has been renamed to invert()."),this.invert()},se.prototype.isIntersectionBox=function(t){return console.warn("THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox()."),this.intersectsBox(t)},se.prototype.isIntersectionPlane=function(t){return console.warn("THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane()."),this.intersectsPlane(t)},se.prototype.isIntersectionSphere=function(t){return console.warn("THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere()."),this.intersectsSphere(t)},ke.prototype.area=function(){return console.warn("THREE.Triangle: .area() has been renamed to .getArea()."),this.getArea()},ke.prototype.barycoordFromPoint=function(t,e){return console.warn("THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord()."),this.getBarycoord(t,e)},ke.prototype.midpoint=function(t){return console.warn("THREE.Triangle: .midpoint() has been renamed to .getMidpoint()."),this.getMidpoint(t)},ke.prototypenormal=function(t){return console.warn("THREE.Triangle: .normal() has been renamed to .getNormal()."),this.getNormal(t)},ke.prototype.plane=function(t){return console.warn("THREE.Triangle: .plane() has been renamed to .getPlane()."),this.getPlane(t)},ke.barycoordFromPoint=function(t,e,n,i,r){return console.warn("THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord()."),ke.getBarycoord(t,e,n,i,r)},ke.normal=function(t,e,n,i){return console.warn("THREE.Triangle: .normal() has been renamed to .getNormal()."),ke.getNormal(t,e,n,i)},Fl.prototype.extractAllPoints=function(t){return console.warn("THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead."),this.extractPoints(t)},Fl.prototype.extrude=function(t){return console.warn("THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead."),new Fo(this,t)},Fl.prototype.makeGeometry=function(t){return console.warn("THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead."),new Wo(this,t)},vt.prototype.fromAttribute=function(t,e,n){return console.warn("THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute()."),this.fromBufferAttribute(t,e,n)},vt.prototype.distanceToManhattan=function(t){return console.warn("THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo()."),this.manhattanDistanceTo(t)},vt.prototype.lengthManhattan=function(){return console.warn("THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength()."),this.manhattanLength()},Rt.prototype.setEulerFromRotationMatrix=function(){console.error("THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.")},Rt.prototype.setEulerFromQuaternion=function(){console.error("THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.")},Rt.prototype.getPositionFromMatrix=function(t){return console.warn("THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition()."),this.setFromMatrixPosition(t)},Rt.prototype.getScaleFromMatrix=function(t){return console.warn("THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale()."),this.setFromMatrixScale(t)},Rt.prototype.getColumnFromMatrix=function(t,e){return console.warn("THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn()."),this.setFromMatrixColumn(e,t)},Rt.prototype.applyProjection=function(t){return console.warn("THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead."),this.applyMatrix4(t)},Rt.prototype.fromAttribute=function(t,e,n){return console.warn("THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute()."),this.fromBufferAttribute(t,e,n)},Rt.prototype.distanceToManhattan=function(t){return console.warn("THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo()."),this.manhattanDistanceTo(t)},Rt.prototype.lengthManhattan=function(){return console.warn("THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength()."),this.manhattanLength()},St.prototype.fromAttribute=function(t,e,n){return console.warn("THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute()."),this.fromBufferAttribute(t,e,n)},St.prototype.lengthManhattan=function(){return console.warn("THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength()."),this.manhattanLength()},Pe.prototype.getChildByName=function(t){return console.warn("THREE.Object3D: .getChildByName() has been renamed to .getObjectByName()."),this.getObjectByName(t)},Pe.prototype.renderDepth=function(){console.warn("THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.")},Pe.prototype.translate=function(t,e){return console.warn("THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead."),this.translateOnAxis(e,t)},Pe.prototype.getWorldRotation=function(){console.error("THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.")},Pe.prototype.applyMatrix=function(t){return console.warn("THREE.Object3D: .applyMatrix() has been renamed to .applyMatrix4()."),this.applyMatrix4(t)},Object.defineProperties(Pe.prototype,{eulerOrder:{get:function(){return console.warn("THREE.Object3D: .eulerOrder is now .rotation.order."),this.rotation.order},set:function(t){console.warn("THREE.Object3D: .eulerOrder is now .rotation.order."),this.rotation.order=t}},useQuaternion:{get:function(){console.warn("THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.")},set:function(){console.warn("THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.")}}}),Gn.prototype.setDrawMode=function(){console.error("THREE.Mesh: .setDrawMode() has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.")},Object.defineProperties(Gn.prototype,{drawMode:{get:function(){return console.error("THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode."),0},set:function(){console.error("THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.")}}}),$s.prototype.initBones=function(){console.error("THREE.SkinnedMesh: initBones() has been removed.")},Jn.prototype.setLens=function(t,e){console.warn("THREE.PerspectiveCamera.setLens is deprecated. Use .setFocalLength and .filmGauge for a photographic setup."),void 0!==e&&(this.filmGauge=e),this.setFocalLength(t)},Object.defineProperties(Ol.prototype,{onlyShadow:{set:function(){console.warn("THREE.Light: .onlyShadow has been removed.")}},shadowCameraFov:{set:function(t){console.warn("THREE.Light: .shadowCameraFov is now .shadow.camera.fov."),this.shadow.camera.fov=t}},shadowCameraLeft:{set:function(t){console.warn("THREE.Light: .shadowCameraLeft is now .shadow.camera.left."),this.shadow.camera.left=t}},shadowCameraRight:{set:function(t){console.warn("THREE.Light: .shadowCameraRight is now .shadow.camera.right."),this.shadow.camera.right=t}},shadowCameraTop:{set:function(t){console.warn("THREE.Light: .shadowCameraTop is now .shadow.camera.top."),this.shadow.camera.top=t}},shadowCameraBottom:{set:function(t){console.warn("THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom."),this.shadow.camera.bottom=t}},shadowCameraNear:{set:function(t){console.warn("THREE.Light: .shadowCameraNear is now .shadow.camera.near."),this.shadow.camera.near=t}},shadowCameraFar:{set:function(t){console.warn("THREE.Light: .shadowCameraFar is now .shadow.camera.far."),this.shadow.camera.far=t}},shadowCameraVisible:{set:function(){console.warn("THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.")}},shadowBias:{set:function(t){console.warn("THREE.Light: .shadowBias is now .shadow.bias."),this.shadow.bias=t}},shadowDarkness:{set:function(){console.warn("THREE.Light: .shadowDarkness has been removed.")}},shadowMapWidth:{set:function(t){console.warn("THREE.Light: .shadowMapWidth is now .shadow.mapSize.width."),this.shadow.mapSize.width=t}},shadowMapHeight:{set:function(t){console.warn("THREE.Light: .shadowMapHeight is now .shadow.mapSize.height."),this.shadow.mapSize.height=t}}}),Object.defineProperties(en.prototype,{length:{get:function(){return console.warn("THREE.BufferAttribute: .length has been deprecated. Use .count instead."),this.array.length}},dynamic:{get:function(){return console.warn("THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead."),this.usage===nt},set:function(){console.warn("THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead."),this.setUsage(nt)}}}),en.prototype.setDynamic=function(t){return console.warn("THREE.BufferAttribute: .setDynamic() has been deprecated. Use .setUsage() instead."),this.setUsage(!0===t?nt:et),this},en.prototype.copyIndicesArray=function(){console.error("THREE.BufferAttribute: .copyIndicesArray() has been removed.")},en.prototype.setArray=function(){console.error("THREE.BufferAttribute: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers")},wn.prototype.addIndex=function(t){console.warn("THREE.BufferGeometry: .addIndex() has been renamed to .setIndex()."),this.setIndex(t)},wn.prototype.addAttribute=function(t,e){return console.warn("THREE.BufferGeometry: .addAttribute() has been renamed to .setAttribute()."),e&&e.isBufferAttribute||e&&e.isInterleavedBufferAttribute?"index"===t?(console.warn("THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute."),this.setIndex(e),this):this.setAttribute(t,e):(console.warn("THREE.BufferGeometry: .addAttribute() now expects ( name, attribute )."),this.setAttribute(t,new en(arguments[1],arguments[2])))},wn.prototype.addDrawCall=function(t,e,n){void 0!==n&&console.warn("THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset."),console.warn("THREE.BufferGeometry: .addDrawCall() is now .addGroup()."),this.addGroup(t,e)},wn.prototype.clearDrawCalls=function(){console.warn("THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups()."),this.clearGroups()},wn.prototype.computeOffsets=function(){console.warn("THREE.BufferGeometry: .computeOffsets() has been removed.")},wn.prototype.removeAttribute=function(t){return console.warn("THREE.BufferGeometry: .removeAttribute() has been renamed to .deleteAttribute()."),this.deleteAttribute(t)},wn.prototype.applyMatrix=function(t){return console.warn("THREE.BufferGeometry: .applyMatrix() has been renamed to .applyMatrix4()."),this.applyMatrix4(t)},Object.defineProperties(wn.prototype,{drawcalls:{get:function(){return console.error("THREE.BufferGeometry: .drawcalls has been renamed to .groups."),this.groups}},offsets:{get:function(){return console.warn("THREE.BufferGeometry: .offsets has been renamed to .groups."),this.groups}}}),Es.prototype.setDynamic=function(t){return console.warn("THREE.InterleavedBuffer: .setDynamic() has been deprecated. Use .setUsage() instead."),this.setUsage(!0===t?nt:et),this},Es.prototype.setArray=function(){console.error("THREE.InterleavedBuffer: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers")},Fo.prototype.getArrays=function(){console.error("THREE.ExtrudeGeometry: .getArrays() has been removed.")},Fo.prototype.addShapeList=function(){console.error("THREE.ExtrudeGeometry: .addShapeList() has been removed.")},Fo.prototype.addShape=function(){console.error("THREE.ExtrudeGeometry: .addShape() has been removed.")},Ts.prototype.dispose=function(){console.error("THREE.Scene: .dispose() has been removed.")},Zc.prototype.onUpdate=function(){return console.warn("THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead."),this},Object.defineProperties(We.prototype,{wrapAround:{get:function(){console.warn("THREE.Material: .wrapAround has been removed.")},set:function(){console.warn("THREE.Material: .wrapAround has been removed.")}},overdraw:{get:function(){console.warn("THREE.Material: .overdraw has been removed.")},set:function(){console.warn("THREE.Material: .overdraw has been removed.")}},wrapRGB:{get:function(){return console.warn("THREE.Material: .wrapRGB has been removed."),new Qe}},shading:{get:function(){console.error("THREE."+this.type+": .shading has been removed. Use the boolean .flatShading instead.")},set:function(t){console.warn("THREE."+this.type+": .shading has been removed. Use the boolean .flatShading instead."),this.flatShading=1===t}},stencilMask:{get:function(){return console.warn("THREE."+this.type+": .stencilMask has been removed. Use .stencilFuncMask instead."),this.stencilFuncMask},set:function(t){console.warn("THREE."+this.type+": .stencilMask has been removed. Use .stencilFuncMask instead."),this.stencilFuncMask=t}}}),Object.defineProperties(Xn.prototype,{derivatives:{get:function(){return console.warn("THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives."),this.extensions.derivatives},set:function(t){console.warn("THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives."),this.extensions.derivatives=t}}}),bs.prototype.clearTarget=function(t,e,n,i){console.warn("THREE.WebGLRenderer: .clearTarget() has been deprecated. Use .setRenderTarget() and .clear() instead."),this.setRenderTarget(t),this.clear(e,n,i)},bs.prototype.animate=function(t){console.warn("THREE.WebGLRenderer: .animate() is now .setAnimationLoop()."),this.setAnimationLoop(t)},bs.prototype.getCurrentRenderTarget=function(){return console.warn("THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget()."),this.getRenderTarget()},bs.prototype.getMaxAnisotropy=function(){return console.warn("THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy()."),this.capabilities.getMaxAnisotropy()},bs.prototype.getPrecision=function(){return console.warn("THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision."),this.capabilities.precision},bs.prototype.resetGLState=function(){return console.warn("THREE.WebGLRenderer: .resetGLState() is now .state.reset()."),this.state.reset()},bs.prototype.supportsFloatTextures=function(){return console.warn("THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( 'OES_texture_float' )."),this.extensions.get("OES_texture_float")},bs.prototype.supportsHalfFloatTextures=function(){return console.warn("THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( 'OES_texture_half_float' )."),this.extensions.get("OES_texture_half_float")},bs.prototype.supportsStandardDerivatives=function(){return console.warn("THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( 'OES_standard_derivatives' )."),this.extensions.get("OES_standard_derivatives")},bs.prototype.supportsCompressedTextureS3TC=function(){return console.warn("THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( 'WEBGL_compressed_texture_s3tc' )."),this.extensions.get("WEBGL_compressed_texture_s3tc")},bs.prototype.supportsCompressedTexturePVRTC=function(){return console.warn("THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( 'WEBGL_compressed_texture_pvrtc' )."),this.extensions.get("WEBGL_compressed_texture_pvrtc")},bs.prototype.supportsBlendMinMax=function(){return console.warn("THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( 'EXT_blend_minmax' )."),this.extensions.get("EXT_blend_minmax")},bs.prototype.supportsVertexTextures=function(){return console.warn("THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures."),this.capabilities.vertexTextures},bs.prototype.supportsInstancedArrays=function(){return console.warn("THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( 'ANGLE_instanced_arrays' )."),this.extensions.get("ANGLE_instanced_arrays")},bs.prototype.enableScissorTest=function(t){console.warn("THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest()."),this.setScissorTest(t)},bs.prototype.initMaterial=function(){console.warn("THREE.WebGLRenderer: .initMaterial() has been removed.")},bs.prototype.addPrePlugin=function(){console.warn("THREE.WebGLRenderer: .addPrePlugin() has been removed.")},bs.prototype.addPostPlugin=function(){console.warn("THREE.WebGLRenderer: .addPostPlugin() has been removed.")},bs.prototype.updateShadowMap=function(){console.warn("THREE.WebGLRenderer: .updateShadowMap() has been removed.")},bs.prototype.setFaceCulling=function(){console.warn("THREE.WebGLRenderer: .setFaceCulling() has been removed.")},bs.prototype.allocTextureUnit=function(){console.warn("THREE.WebGLRenderer: .allocTextureUnit() has been removed.")},bs.prototype.setTexture=function(){console.warn("THREE.WebGLRenderer: .setTexture() has been removed.")},bs.prototype.setTexture2D=function(){console.warn("THREE.WebGLRenderer: .setTexture2D() has been removed.")},bs.prototype.setTextureCube=function(){console.warn("THREE.WebGLRenderer: .setTextureCube() has been removed.")},bs.prototype.getActiveMipMapLevel=function(){return console.warn("THREE.WebGLRenderer: .getActiveMipMapLevel() is now .getActiveMipmapLevel()."),this.getActiveMipmapLevel()},Object.defineProperties(bs.prototype,{shadowMapEnabled:{get:function(){return this.shadowMap.enabled},set:function(t){console.warn("THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled."),this.shadowMap.enabled=t}},shadowMapType:{get:function(){return this.shadowMap.type},set:function(t){console.warn("THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type."),this.shadowMap.type=t}},shadowMapCullFace:{get:function(){console.warn("THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.")},set:function(){console.warn("THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.")}},context:{get:function(){return console.warn("THREE.WebGLRenderer: .context has been removed. Use .getContext() instead."),this.getContext()}},vr:{get:function(){return console.warn("THREE.WebGLRenderer: .vr has been renamed to .xr"),this.xr}},gammaInput:{get:function(){return console.warn("THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead."),!1},set:function(){console.warn("THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.")}},gammaOutput:{get:function(){return console.warn("THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead."),!1},set:function(t){console.warn("THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead."),this.outputEncoding=!0===t?Y:X}},toneMappingWhitePoint:{get:function(){return console.warn("THREE.WebGLRenderer: .toneMappingWhitePoint has been removed."),1},set:function(){console.warn("THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.")}}}),Object.defineProperties(us.prototype,{cullFace:{get:function(){console.warn("THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.")},set:function(){console.warn("THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.")}},renderReverseSided:{get:function(){console.warn("THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.")},set:function(){console.warn("THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.")}},renderSingleSided:{get:function(){console.warn("THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.")},set:function(){console.warn("THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.")}}}),Object.defineProperties(Tt.prototype,{wrapS:{get:function(){return console.warn("THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS."),this.texture.wrapS},set:function(t){console.warn("THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS."),this.texture.wrapS=t}},wrapT:{get:function(){return console.warn("THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT."),this.texture.wrapT},set:function(t){console.warn("THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT."),this.texture.wrapT=t}},magFilter:{get:function(){return console.warn("THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter."),this.texture.magFilter},set:function(t){console.warn("THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter."),this.texture.magFilter=t}},minFilter:{get:function(){return console.warn("THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter."),this.texture.minFilter},set:function(t){console.warn("THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter."),this.texture.minFilter=t}},anisotropy:{get:function(){return console.warn("THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy."),this.texture.anisotropy},set:function(t){console.warn("THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy."),this.texture.anisotropy=t}},offset:{get:function(){return console.warn("THREE.WebGLRenderTarget: .offset is now .texture.offset."),this.texture.offset},set:function(t){console.warn("THREE.WebGLRenderTarget: .offset is now .texture.offset."),this.texture.offset=t}},repeat:{get:function(){return console.warn("THREE.WebGLRenderTarget: .repeat is now .texture.repeat."),this.texture.repeat},set:function(t){console.warn("THREE.WebGLRenderTarget: .repeat is now .texture.repeat."),this.texture.repeat=t}},format:{get:function(){return console.warn("THREE.WebGLRenderTarget: .format is now .texture.format."),this.texture.format},set:function(t){console.warn("THREE.WebGLRenderTarget: .format is now .texture.format."),this.texture.format=t}},type:{get:function(){return console.warn("THREE.WebGLRenderTarget: .type is now .texture.type."),this.texture.type},set:function(t){console.warn("THREE.WebGLRenderTarget: .type is now .texture.type."),this.texture.type=t}},generateMipmaps:{get:function(){return console.warn("THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps."),this.texture.generateMipmaps},set:function(t){console.warn("THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps."),this.texture.generateMipmaps=t}}}),Rc.prototype.load=function(t){console.warn("THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.");const e=this;return(new yc).load(t,(function(t){e.setBuffer(t)})),this},Nc.prototype.getData=function(){return console.warn("THREE.AudioAnalyser: .getData() is now .getFrequencyData()."),this.getFrequencyData()},Qn.prototype.updateCubeMap=function(t,e){return console.warn("THREE.CubeCamera: .updateCubeMap() is now .update()."),this.update(t,e)},Qn.prototype.clear=function(t,e,n,i){return console.warn("THREE.CubeCamera: .clear() is now .renderTarget.clear()."),this.renderTarget.clear(t,e,n,i)},_t.crossOrigin=void 0,_t.loadTexture=function(t,e,n,i){console.warn("THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.");const r=new Nl;r.setCrossOrigin(this.crossOrigin);const s=r.load(t,n,void 0,i);return e&&(s.mapping=e),s},_t.loadTextureCube=function(t,e,n,i){console.warn("THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.");const r=new Dl;r.setCrossOrigin(this.crossOrigin);const s=r.load(t,n,void 0,i);return e&&(s.mapping=e),s},_t.loadCompressedTexture=function(){console.error("THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.")},_t.loadCompressedTextureCube=function(){console.error("THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.")};const nu={createMultiMaterialObject:function(){console.error("THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js")},detach:function(){console.error("THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js")},attach:function(){console.error("THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js")}};"undefined"!=typeof __THREE_DEVTOOLS__&&__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent("register",{detail:{revision:e}})),"undefined"!=typeof window&&(window.__THREE__?console.warn("WARNING: Multiple instances of Three.js being imported."):window.__THREE__=e),t.ACESFilmicToneMapping=4,t.AddEquation=n,t.AddOperation=2,t.AdditiveAnimationBlendMode=q,t.AdditiveBlending=2,t.AlphaFormat=1021,t.AlwaysDepth=1,t.AlwaysStencilFunc=519,t.AmbientLight=tc,t.AmbientLightProbe=_c,t.AnimationClip=wl,t.AnimationLoader=class extends Ll{constructor(t){super(t)}load(t,e,n,i){const r=this,s=new Cl(this.manager);s.setPath(this.path),s.setRequestHeader(this.requestHeader),s.setWithCredentials(this.withCredentials),s.load(t,(function(n){try{e(r.parse(JSON.parse(n)))}catch(e){i?i(e):console.error(e),r.manager.itemError(t)}}),n,i)}parse(t){const e=[];for(let n=0;n<t.length;n++){const i=wl.parse(t[n]);e.push(i)}return e}},t.AnimationMixer=Jc,t.AnimationObjectGroup=Xc,t.AnimationUtils=hl,t.ArcCurve=Wa,t.ArrayCamera=fs,t.ArrowHelper=class extends Pe{constructor(t=new Rt(0,0,1),e=new Rt(0,0,0),n=1,i=16776960,r=.2*n,s=.2*r){super(),this.type="ArrowHelper",void 0===Eh&&(Eh=new wn,Eh.setAttribute("position",new un([0,0,0,0,1,0],3)),Ah=new Ia(0,.5,1,5,1),Ah.translate(0,-.5,0)),this.position.copy(e),this.line=new ga(Eh,new ha({color:i,toneMapped:!1})),this.line.matrixAutoUpdate=!1,this.add(this.line),this.cone=new Gn(Ah,new Ke({color:i,toneMapped:!1})),this.cone.matrixAutoUpdate=!1,this.add(this.cone),this.setDirection(t),this.setLength(n,r,s)}setDirection(t){if(t.y>.99999)this.quaternion.set(0,0,0,1);else if(t.y<-.99999)this.quaternion.set(1,0,0,0);else{Th.set(t.z,0,-t.x).normalize();const e=Math.acos(t.y);this.quaternion.setFromAxisAngle(Th,e)}}setLength(t,e=.2*t,n=.2*e){this.line.scale.set(1,Math.max(1e-4,t-e),1),this.line.updateMatrix(),this.cone.scale.set(n,e,n),this.cone.position.y=t,this.cone.updateMatrix()}setColor(t){this.line.material.color.set(t),this.cone.material.color.set(t)}copy(t){return super.copy(t,!1),this.line.copy(t.line),this.cone.copy(t.cone),this}},t.Audio=Rc,t.AudioAnalyser=Nc,t.AudioContext=vc,t.AudioListener=class extends Pe{constructor(){super(),this.type="AudioListener",this.context=vc.getContext(),this.gain=this.context.createGain(),this.gain.connect(this.context.destination),this.filter=null,this.timeDelta=0,this._clock=new wc}getInput(){return this.gain}removeFilter(){return null!==this.filter&&(this.gain.disconnect(this.filter),this.filter.disconnect(this.context.destination),this.gain.connect(this.context.destination),this.filter=null),this}getFilter(){return this.filter}setFilter(t){return null!==this.filter?(this.gain.disconnect(this.filter),this.filter.disconnect(this.context.destination)):this.gain.disconnect(this.context.destination),this.filter=t,this.gain.connect(this.filter),this.filter.connect(this.context.destination),this}getMasterVolume(){return this.gain.gain.value}setMasterVolume(t){return this.gain.gain.setTargetAtTime(t,this.context.currentTime,.01),this}updateMatrixWorld(t){super.updateMatrixWorld(t);const e=this.context.listener,n=this.up;if(this.timeDelta=this._clock.getDelta(),this.matrixWorld.decompose(Tc,Ec,Ac),Lc.set(0,0,-1).applyQuaternion(Ec),e.positionX){const t=this.context.currentTime+this.timeDelta;e.positionX.linearRampToValueAtTime(Tc.x,t),e.positionY.linearRampToValueAtTime(Tc.y,t),e.positionZ.linearRampToValueAtTime(Tc.z,t),e.forwardX.linearRampToValueAtTime(Lc.x,t),e.forwardY.linearRampToValueAtTime(Lc.y,t),e.forwardZ.linearRampToValueAtTime(Lc.z,t),e.upX.linearRampToValueAtTime(n.x,t),e.upY.linearRampToValueAtTime(n.y,t),e.upZ.linearRampToValueAtTime(n.z,t)}else e.setPosition(Tc.x,Tc.y,Tc.z),e.setOrientation(Lc.x,Lc.y,Lc.z,n.x,n.y,n.z)}},t.AudioLoader=yc,t.AxesHelper=Lh,t.AxisHelper=function(t){return console.warn("THREE.AxisHelper has been renamed to THREE.AxesHelper."),new Lh(t)},t.BackSide=1,t.BasicDepthPacking=3200,t.BasicShadowMap=0,t.BinaryTextureLoader=function(t){return console.warn("THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader."),new Il(t)},t.Bone=ta,t.BooleanKeyframeTrack=gl,t.BoundingBoxHelper=function(t,e){return console.warn("THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead."),new Sh(t,e)},t.Box2=nh,t.Box3=Dt,t.Box3Helper=class extends xa{constructor(t,e=16776960){const n=new Uint16Array([0,1,1,2,2,3,3,0,4,5,5,6,6,7,7,4,0,4,1,5,2,6,3,7]),i=new wn;i.setIndex(new en(n,1)),i.setAttribute("position",new un([1,1,1,-1,1,1,-1,-1,1,1,-1,1,1,1,-1,-1,1,-1,-1,-1,-1,1,-1,-1],3)),super(i,new ha({color:e,toneMapped:!1})),this.box=t,this.type="Box3Helper",this.geometry.computeBoundingSphere()}updateMatrixWorld(t){const e=this.box;e.isEmpty()||(e.getCenter(this.position),e.getSize(this.scale),this.scale.multiplyScalar(.5),super.updateMatrixWorld(t))}},t.BoxBufferGeometry=Vn,t.BoxGeometry=Vn,t.BoxHelper=Sh,t.BufferAttribute=en,t.BufferGeometry=wn,t.BufferGeometryLoader=lc,t.ByteType=1010,t.Cache=Tl,t.Camera=Yn,t.CameraHelper=class extends xa{constructor(t){const e=new wn,n=new ha({color:16777215,vertexColors:!0,toneMapped:!1}),i=[],r=[],s={},a=new Qe(16755200),o=new Qe(16711680),l=new Qe(43775),c=new Qe(16777215),h=new Qe(3355443);function u(t,e,n){d(t,n),d(e,n)}function d(t,e){i.push(0,0,0),r.push(e.r,e.g,e.b),void 0===s[t]&&(s[t]=[]),s[t].push(i.length/3-1)}u("n1","n2",a),u("n2","n4",a),u("n4","n3",a),u("n3","n1",a),u("f1","f2",a),u("f2","f4",a),u("f4","f3",a),u("f3","f1",a),u("n1","f1",a),u("n2","f2",a),u("n3","f3",a),u("n4","f4",a),u("p","n1",o),u("p","n2",o),u("p","n3",o),u("p","n4",o),u("u1","u2",l),u("u2","u3",l),u("u3","u1",l),u("c","t",c),u("p","c",h),u("cn1","cn2",h),u("cn3","cn4",h),u("cf1","cf2",h),u("cf3","cf4",h),e.setAttribute("position",new un(i,3)),e.setAttribute("color",new un(r,3)),super(e,n),this.type="CameraHelper",this.camera=t,this.camera.updateProjectionMatrix&&this.camera.updateProjectionMatrix(),this.matrix=t.matrixWorld,this.matrixAutoUpdate=!1,this.pointMap=s,this.update()}update(){const t=this.geometry,e=this.pointMap;bh.projectionMatrixInverse.copy(this.camera.projectionMatrixInverse),Mh("c",e,t,bh,0,0,-1),Mh("t",e,t,bh,0,0,1),Mh("n1",e,t,bh,-1,-1,-1),Mh("n2",e,t,bh,1,-1,-1),Mh("n3",e,t,bh,-1,1,-1),Mh("n4",e,t,bh,1,1,-1),Mh("f1",e,t,bh,-1,-1,1),Mh("f2",e,t,bh,1,-1,1),Mh("f3",e,t,bh,-1,1,1),Mh("f4",e,t,bh,1,1,1),Mh("u1",e,t,bh,.7,1.1,-1),Mh("u2",e,t,bh,-.7,1.1,-1),Mh("u3",e,t,bh,0,2,-1),Mh("cf1",e,t,bh,-1,0,1),Mh("cf2",e,t,bh,1,0,1),Mh("cf3",e,t,bh,0,-1,1),Mh("cf4",e,t,bh,0,1,1),Mh("cn1",e,t,bh,-1,0,-1),Mh("cn2",e,t,bh,1,0,-1),Mh("cn3",e,t,bh,0,-1,-1),Mh("cn4",e,t,bh,0,1,-1),t.getAttribute("position").needsUpdate=!0}dispose(){this.geometry.dispose(),this.material.dispose()}},t.CanvasRenderer=function(){console.error("THREE.CanvasRenderer has been removed")},t.CanvasTexture=Ca,t.CatmullRomCurve3=Za,t.CineonToneMapping=3,t.CircleBufferGeometry=Da,t.CircleGeometry=Da,t.ClampToEdgeWrapping=u,t.Clock=wc,t.Color=Qe,t.ColorKeyframeTrack=vl,t.CompressedTexture=Ra,t.CompressedTextureLoader=class extends Ll{constructor(t){super(t)}load(t,e,n,i){const r=this,s=[],a=new Ra,o=new Cl(this.manager);o.setPath(this.path),o.setResponseType("arraybuffer"),o.setRequestHeader(this.requestHeader),o.setWithCredentials(r.withCredentials);let l=0;function c(c){o.load(t[c],(function(t){const n=r.parse(t,!0);s[c]={width:n.width,height:n.height,format:n.format,mipmaps:n.mipmaps},l+=1,6===l&&(1===n.mipmapCount&&(a.minFilter=g),a.image=s,a.format=n.format,a.needsUpdate=!0,e&&e(a))}),n,i)}if(Array.isArray(t))for(let e=0,n=t.length;e<n;++e)c(e);else o.load(t,(function(t){const n=r.parse(t,!0);if(n.isCubemap){const t=n.mipmaps.length/n.mipmapCount;for(let e=0;e<t;e++){s[e]={mipmaps:[]};for(let t=0;t<n.mipmapCount;t++)s[e].mipmaps.push(n.mipmaps[e*n.mipmapCount+t]),s[e].format=n.format,s[e].width=n.width,s[e].height=n.height}a.image=s}else a.image.width=n.width,a.image.height=n.height,a.mipmaps=n.mipmaps;1===n.mipmapCount&&(a.minFilter=g),a.format=n.format,a.needsUpdate=!0,e&&e(a)}),n,i);return a}},t.ConeBufferGeometry=Na,t.ConeGeometry=Na,t.CubeCamera=Qn,t.CubeReflectionMapping=r,t.CubeRefractionMapping=s,t.CubeTexture=Kn,t.CubeTextureLoader=Dl,t.CubeUVReflectionMapping=l,t.CubeUVRefractionMapping=c,t.CubicBezierCurve=to,t.CubicBezierCurve3=eo,t.CubicInterpolant=dl,t.CullFaceBack=1,t.CullFaceFront=2,t.CullFaceFrontBack=3,t.CullFaceNone=0,t.Curve=ka,t.CurvePath=Bl,t.CustomBlending=5,t.CustomToneMapping=5,t.CylinderBufferGeometry=Ia,t.CylinderGeometry=Ia,t.Cylindrical=class{constructor(t=1,e=0,n=0){return this.radius=t,this.theta=e,this.y=n,this}set(t,e,n){return this.radius=t,this.theta=e,this.y=n,this}copy(t){return this.radius=t.radius,this.theta=t.theta,this.y=t.y,this}setFromVector3(t){return this.setFromCartesianCoords(t.x,t.y,t.z)}setFromCartesianCoords(t,e,n){return this.radius=Math.sqrt(t*t+n*n),this.theta=Math.atan2(t,n),this.y=e,this}clone(){return(new this.constructor).copy(this)}},t.DataTexture=ea,t.DataTexture2DArray=Ai,t.DataTexture3D=Li,t.DataTextureLoader=Il,t.DataUtils=class{static toHalfFloat(t){Rh[0]=t;const e=Ch[0];let n=e>>16&32768,i=e>>12&2047;const r=e>>23&255;return r<103?n:r>142?(n|=31744,n|=(255==r?0:1)&&8388607&e,n):r<113?(i|=2048,n|=(i>>114-r)+(i>>113-r&1),n):(n|=r-112<<10|i>>1,n+=1&i,n)}},t.DecrementStencilOp=7683,t.DecrementWrapStencilOp=34056,t.DefaultLoadingManager=Al,t.DepthFormat=A,t.DepthStencilFormat=L,t.DepthTexture=Pa,t.DirectionalLight=$l,t.DirectionalLightHelper=class extends Pe{constructor(t,e,n){super(),this.light=t,this.light.updateMatrixWorld(),this.matrix=t.matrixWorld,this.matrixAutoUpdate=!1,this.color=n,void 0===e&&(e=1);let i=new wn;i.setAttribute("position",new un([-e,e,0,e,e,0,e,-e,0,-e,-e,0,-e,e,0],3));const r=new ha({fog:!1,toneMapped:!1});this.lightPlane=new ga(i,r),this.add(this.lightPlane),i=new wn,i.setAttribute("position",new un([0,0,0,0,0,1],3)),this.targetLine=new ga(i,r),this.add(this.targetLine),this.update()}dispose(){this.lightPlane.geometry.dispose(),this.lightPlane.material.dispose(),this.targetLine.geometry.dispose(),this.targetLine.material.dispose()}update(){vh.setFromMatrixPosition(this.light.matrixWorld),yh.setFromMatrixPosition(this.light.target.matrixWorld),xh.subVectors(yh,vh),this.lightPlane.lookAt(yh),void 0!==this.color?(this.lightPlane.material.color.set(this.color),this.targetLine.material.color.set(this.color)):(this.lightPlane.material.color.copy(this.light.color),this.targetLine.material.color.copy(this.light.color)),this.targetLine.lookAt(yh),this.targetLine.scale.z=xh.length()}},t.DiscreteInterpolant=ml,t.DodecahedronBufferGeometry=za,t.DodecahedronGeometry=za,t.DoubleSide=2,t.DstAlphaFactor=206,t.DstColorFactor=208,t.DynamicBufferAttribute=function(t,e){return console.warn("THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setUsage( THREE.DynamicDrawUsage ) instead."),new en(t,e).setUsage(nt)},t.DynamicCopyUsage=35050,t.DynamicDrawUsage=nt,t.DynamicReadUsage=35049,t.EdgesGeometry=Ga,t.EdgesHelper=function(t,e){return console.warn("THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead."),new xa(new Ga(t.geometry),new ha({color:void 0!==e?e:16777215}))},t.EllipseCurve=Va,t.EqualDepth=4,t.EqualStencilFunc=514,t.EquirectangularReflectionMapping=a,t.EquirectangularRefractionMapping=o,t.Euler=ge,t.EventDispatcher=rt,t.ExtrudeBufferGeometry=Fo,t.ExtrudeGeometry=Fo,t.FaceColors=1,t.FileLoader=Cl,t.FlatShading=1,t.Float16BufferAttribute=hn,t.Float32Attribute=function(t,e){return console.warn("THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead."),new un(t,e)},t.Float32BufferAttribute=un,t.Float64Attribute=function(t,e){return console.warn("THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead."),new dn(t,e)},t.Float64BufferAttribute=dn,t.FloatType=M,t.Fog=Ss,t.FogExp2=ws,t.Font=mc,t.FontLoader=class extends Ll{constructor(t){super(t)}load(t,e,n,i){const r=this,s=new Cl(this.manager);s.setPath(this.path),s.setRequestHeader(this.requestHeader),s.setWithCredentials(r.withCredentials),s.load(t,(function(t){let n;try{n=JSON.parse(t)}catch(e){console.warn("THREE.FontLoader: typeface.js support is being deprecated. Use typeface.json instead."),n=JSON.parse(t.substring(65,t.length-2))}const i=r.parse(n);e&&e(i)}),n,i)}parse(t){return new mc(t)}},t.FrontSide=0,t.Frustum=ai,t.GLBufferAttribute=Kc,t.GLSL1="100",t.GLSL3=it,t.GammaEncoding=J,t.GreaterDepth=6,t.GreaterEqualDepth=5,t.GreaterEqualStencilFunc=518,t.GreaterStencilFunc=516,t.GridHelper=gh,t.Group=gs,t.HalfFloatType=w,t.HemisphereLight=Hl,t.HemisphereLightHelper=class extends Pe{constructor(t,e,n){super(),this.light=t,this.light.updateMatrixWorld(),this.matrix=t.matrixWorld,this.matrixAutoUpdate=!1,this.color=n;const i=new Go(e);i.rotateY(.5*Math.PI),this.material=new Ke({wireframe:!0,fog:!1,toneMapped:!1}),void 0===this.color&&(this.material.vertexColors=!0);const r=i.getAttribute("position"),s=new Float32Array(3*r.count);i.setAttribute("color",new en(s,3)),this.add(new Gn(i,this.material)),this.update()}dispose(){this.children[0].geometry.dispose(),this.children[0].material.dispose()}update(){const t=this.children[0];if(void 0!==this.color)this.material.color.set(this.color);else{const e=t.geometry.getAttribute("color");mh.copy(this.light.color),fh.copy(this.light.groundColor);for(let t=0,n=e.count;t<n;t++){const i=t<n/2?mh:fh;e.setXYZ(t,i.r,i.g,i.b)}e.needsUpdate=!0}t.lookAt(ph.setFromMatrixPosition(this.light.matrixWorld).negate())}},t.HemisphereLightProbe=xc,t.IcosahedronBufferGeometry=Ho,t.IcosahedronGeometry=Ho,t.ImageBitmapLoader=dc,t.ImageLoader=Pl,t.ImageUtils=_t,t.ImmediateRenderObject=ah,t.IncrementStencilOp=7682,t.IncrementWrapStencilOp=34055,t.InstancedBufferAttribute=oc,t.InstancedBufferGeometry=ac,t.InstancedInterleavedBuffer=Qc,t.InstancedMesh=ca,t.Int16Attribute=function(t,e){return console.warn("THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead."),new an(t,e)},t.Int16BufferAttribute=an,t.Int32Attribute=function(t,e){return console.warn("THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead."),new ln(t,e)},t.Int32BufferAttribute=ln,t.Int8Attribute=function(t,e){return console.warn("THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead."),new nn(t,e)},t.Int8BufferAttribute=nn,t.IntType=1013,t.InterleavedBuffer=Es,t.InterleavedBufferAttribute=Ls,t.Interpolant=ul,t.InterpolateDiscrete=H,t.InterpolateLinear=U,t.InterpolateSmooth=G,t.InvertStencilOp=5386,t.JSONLoader=function(){console.error("THREE.JSONLoader has been removed.")},t.KeepStencilOp=tt,t.KeyframeTrack=fl,t.LOD=Xs,t.LatheBufferGeometry=Uo,t.LatheGeometry=Uo,t.Layers=ve,t.LensFlare=function(){console.error("THREE.LensFlare has been moved to /examples/jsm/objects/Lensflare.js")},t.LessDepth=2,t.LessEqualDepth=3,t.LessEqualStencilFunc=515,t.LessStencilFunc=513,t.Light=Ol,t.LightProbe=ic,t.Line=ga,t.Line3=sh,t.LineBasicMaterial=ha,t.LineCurve=no,t.LineCurve3=io,t.LineDashedMaterial=ll,t.LineLoop=_a,t.LinePieces=1,t.LineSegments=xa,t.LineStrip=0,t.LinearEncoding=X,t.LinearFilter=g,t.LinearInterpolant=pl,t.LinearMipMapLinearFilter=1008,t.LinearMipMapNearestFilter=1007,t.LinearMipmapLinearFilter=y,t.LinearMipmapNearestFilter=v,t.LinearToneMapping=1,t.Loader=Ll,t.LoaderUtils=sc,t.LoadingManager=El,t.LogLuvEncoding=3003,t.LoopOnce=2200,t.LoopPingPong=2202,t.LoopRepeat=2201,t.LuminanceAlphaFormat=1025,t.LuminanceFormat=1024,t.MOUSE={LEFT:0,MIDDLE:1,RIGHT:2,ROTATE:0,DOLLY:1,PAN:2},t.Material=We,t.MaterialLoader=rc,t.Math=gt,t.MathUtils=gt,t.Matrix3=yt,t.Matrix4=ae,t.MaxEquation=104,t.Mesh=Gn,t.MeshBasicMaterial=Ke,t.MeshDepthMaterial=cs,t.MeshDistanceMaterial=hs,t.MeshFaceMaterial=function(t){return console.warn("THREE.MeshFaceMaterial has been removed. Use an Array instead."),t},t.MeshLambertMaterial=al,t.MeshMatcapMaterial=ol,t.MeshNormalMaterial=sl,t.MeshPhongMaterial=il,t.MeshPhysicalMaterial=nl,t.MeshStandardMaterial=el,t.MeshToonMaterial=rl,t.MinEquation=103,t.MirroredRepeatWrapping=d,t.MixOperation=1,t.MultiMaterial=function(t=[]){return console.warn("THREE.MultiMaterial has been removed. Use an Array instead."),t.isMultiMaterial=!0,t.materials=t,t.clone=function(){return t.slice()},t},t.MultiplyBlending=4,t.MultiplyOperation=0,t.NearestFilter=p,t.NearestMipMapLinearFilter=1005,t.NearestMipMapNearestFilter=1004,t.NearestMipmapLinearFilter=f,t.NearestMipmapNearestFilter=m,t.NeverDepth=0,t.NeverStencilFunc=512,t.NoBlending=0,t.NoColors=0,t.NoToneMapping=0,t.NormalAnimationBlendMode=j,t.NormalBlending=1,t.NotEqualDepth=7,t.NotEqualStencilFunc=517,t.NumberKeyframeTrack=yl,t.Object3D=Pe,t.ObjectLoader=class extends Ll{constructor(t){super(t)}load(t,e,n,i){const r=this,s=""===this.path?sc.extractUrlBase(t):this.path;this.resourcePath=this.resourcePath||s;const a=new Cl(this.manager);a.setPath(this.path),a.setRequestHeader(this.requestHeader),a.setWithCredentials(this.withCredentials),a.load(t,(function(n){let s=null;try{s=JSON.parse(n)}catch(e){return void 0!==i&&i(e),void console.error("THREE:ObjectLoader: Can't parse "+t+".",e.message)}const a=s.metadata;void 0!==a&&void 0!==a.type&&"geometry"!==a.type.toLowerCase()?r.parse(s,e):console.error("THREE.ObjectLoader: Can't load "+t)}),n,i)}async loadAsync(t,e){const n=""===this.path?sc.extractUrlBase(t):this.path;this.resourcePath=this.resourcePath||n;const i=new Cl(this.manager);i.setPath(this.path),i.setRequestHeader(this.requestHeader),i.setWithCredentials(this.withCredentials);const r=await i.loadAsync(t,e),s=JSON.parse(r),a=s.metadata;if(void 0===a||void 0===a.type||"geometry"===a.type.toLowerCase())throw new Error("THREE.ObjectLoader: Can't load "+t);return await this.parseAsync(s)}parse(t,e){const n=this.parseAnimations(t.animations),i=this.parseShapes(t.shapes),r=this.parseGeometries(t.geometries,i),s=this.parseImages(t.images,(function(){void 0!==e&&e(l)})),a=this.parseTextures(t.textures,s),o=this.parseMaterials(t.materials,a),l=this.parseObject(t.object,r,o,a,n),c=this.parseSkeletons(t.skeletons,l);if(this.bindSkeletons(l,c),void 0!==e){let t=!1;for(const e in s)if(s[e]instanceof HTMLImageElement){t=!0;break}!1===t&&e(l)}return l}async parseAsync(t){const e=this.parseAnimations(t.animations),n=this.parseShapes(t.shapes),i=this.parseGeometries(t.geometries,n),r=await this.parseImagesAsync(t.images),s=this.parseTextures(t.textures,r),a=this.parseMaterials(t.materials,s),o=this.parseObject(t.object,i,a,s,e),l=this.parseSkeletons(t.skeletons,o);return this.bindSkeletons(o,l),o}parseShapes(t){const e={};if(void 0!==t)for(let n=0,i=t.length;n<i;n++){const i=(new Fl).fromJSON(t[n]);e[i.uuid]=i}return e}parseSkeletons(t,e){const n={},i={};if(e.traverse((function(t){t.isBone&&(i[t.uuid]=t)})),void 0!==t)for(let e=0,r=t.length;e<r;e++){const r=(new ra).fromJSON(t[e],i);n[r.uuid]=r}return n}parseGeometries(t,e){const n={};if(void 0!==t){const i=new lc;for(let r=0,s=t.length;r<s;r++){let s;const a=t[r];switch(a.type){case"BufferGeometry":case"InstancedBufferGeometry":s=i.parse(a);break;case"Geometry":console.error("THREE.ObjectLoader: The legacy Geometry type is no longer supported.");break;default:a.type in Ko?s=Ko[a.type].fromJSON(a,e):console.warn(`THREE.ObjectLoader: Unsupported geometry type "${a.type}"`)}s.uuid=a.uuid,void 0!==a.name&&(s.name=a.name),!0===s.isBufferGeometry&&void 0!==a.userData&&(s.userData=a.userData),n[a.uuid]=s}}return n}parseMaterials(t,e){const n={},i={};if(void 0!==t){const r=new rc;r.setTextures(e);for(let e=0,s=t.length;e<s;e++){const s=t[e];if("MultiMaterial"===s.type){const t=[];for(let e=0;e<s.materials.length;e++){const i=s.materials[e];void 0===n[i.uuid]&&(n[i.uuid]=r.parse(i)),t.push(n[i.uuid])}i[s.uuid]=t}else void 0===n[s.uuid]&&(n[s.uuid]=r.parse(s)),i[s.uuid]=n[s.uuid]}}return i}parseAnimations(t){const e={};if(void 0!==t)for(let n=0;n<t.length;n++){const i=t[n],r=wl.parse(i);e[r.uuid]=r}return e}parseImages(t,e){const n=this,i={};let r;function s(t){if("string"==typeof t){const e=t;return function(t){return n.manager.itemStart(t),r.load(t,(function(){n.manager.itemEnd(t)}),void 0,(function(){n.manager.itemError(t),n.manager.itemEnd(t)}))}(/^(\/\/)|([a-z]+:(\/\/)?)/i.test(e)?e:n.resourcePath+e)}return t.data?{data:fn(t.type,t.data),width:t.width,height:t.height}:null}if(void 0!==t&&t.length>0){const n=new El(e);r=new Pl(n),r.setCrossOrigin(this.crossOrigin);for(let e=0,n=t.length;e<n;e++){const n=t[e],r=n.url;if(Array.isArray(r)){i[n.uuid]=[];for(let t=0,e=r.length;t<e;t++){const e=s(r[t]);null!==e&&(e instanceof HTMLImageElement?i[n.uuid].push(e):i[n.uuid].push(new ea(e.data,e.width,e.height)))}}else{const t=s(n.url);null!==t&&(i[n.uuid]=t)}}}return i}async parseImagesAsync(t){const e=this,n={};let i;async function r(t){if("string"==typeof t){const n=t,r=/^(\/\/)|([a-z]+:(\/\/)?)/i.test(n)?n:e.resourcePath+n;return await i.loadAsync(r)}return t.data?{data:fn(t.type,t.data),width:t.width,height:t.height}:null}if(void 0!==t&&t.length>0){i=new Pl(this.manager),i.setCrossOrigin(this.crossOrigin);for(let e=0,i=t.length;e<i;e++){const i=t[e],s=i.url;if(Array.isArray(s)){n[i.uuid]=[];for(let t=0,e=s.length;t<e;t++){const e=s[t],a=await r(e);null!==a&&(a instanceof HTMLImageElement?n[i.uuid].push(a):n[i.uuid].push(new ea(a.data,a.width,a.height)))}}else{const t=await r(i.url);null!==t&&(n[i.uuid]=t)}}}return n}parseTextures(t,e){function n(t,e){return"number"==typeof t?t:(console.warn("THREE.ObjectLoader.parseTexture: Constant should be in numeric form.",t),e[t])}const i={};if(void 0!==t)for(let r=0,s=t.length;r<s;r++){const s=t[r];let a;void 0===s.image&&console.warn('THREE.ObjectLoader: No "image" specified for',s.uuid),void 0===e[s.image]&&console.warn("THREE.ObjectLoader: Undefined image",s.image);const o=e[s.image];Array.isArray(o)?(a=new Kn(o),6===o.length&&(a.needsUpdate=!0)):(a=o&&o.data?new ea(o.data,o.width,o.height):new Mt(o),o&&(a.needsUpdate=!0)),a.uuid=s.uuid,void 0!==s.name&&(a.name=s.name),void 0!==s.mapping&&(a.mapping=n(s.mapping,cc)),void 0!==s.offset&&a.offset.fromArray(s.offset),void 0!==s.repeat&&a.repeat.fromArray(s.repeat),void 0!==s.center&&a.center.fromArray(s.center),void 0!==s.rotation&&(a.rotation=s.rotation),void 0!==s.wrap&&(a.wrapS=n(s.wrap[0],hc),a.wrapT=n(s.wrap[1],hc)),void 0!==s.format&&(a.format=s.format),void 0!==s.type&&(a.type=s.type),void 0!==s.encoding&&(a.encoding=s.encoding),void 0!==s.minFilter&&(a.minFilter=n(s.minFilter,uc)),void 0!==s.magFilter&&(a.magFilter=n(s.magFilter,uc)),void 0!==s.anisotropy&&(a.anisotropy=s.anisotropy),void 0!==s.flipY&&(a.flipY=s.flipY),void 0!==s.premultiplyAlpha&&(a.premultiplyAlpha=s.premultiplyAlpha),void 0!==s.unpackAlignment&&(a.unpackAlignment=s.unpackAlignment),i[s.uuid]=a}return i}parseObject(t,e,n,i,r){let s,a,o;function l(t){return void 0===e[t]&&console.warn("THREE.ObjectLoader: Undefined geometry",t),e[t]}function c(t){if(void 0!==t){if(Array.isArray(t)){const e=[];for(let i=0,r=t.length;i<r;i++){const r=t[i];void 0===n[r]&&console.warn("THREE.ObjectLoader: Undefined material",r),e.push(n[r])}return e}return void 0===n[t]&&console.warn("THREE.ObjectLoader: Undefined material",t),n[t]}}function h(t){return void 0===i[t]&&console.warn("THREE.ObjectLoader: Undefined texture",t),i[t]}switch(t.type){case"Scene":s=new Ts,void 0!==t.background&&(Number.isInteger(t.background)?s.background=new Qe(t.background):s.background=h(t.background)),void 0!==t.environment&&(s.environment=h(t.environment)),void 0!==t.fog&&("Fog"===t.fog.type?s.fog=new Ss(t.fog.color,t.fog.near,t.fog.far):"FogExp2"===t.fog.type&&(s.fog=new ws(t.fog.color,t.fog.density)));break;case"PerspectiveCamera":s=new Jn(t.fov,t.aspect,t.near,t.far),void 0!==t.focus&&(s.focus=t.focus),void 0!==t.zoom&&(s.zoom=t.zoom),void 0!==t.filmGauge&&(s.filmGauge=t.filmGauge),void 0!==t.filmOffset&&(s.filmOffset=t.filmOffset),void 0!==t.view&&(s.view=Object.assign({},t.view));break;case"OrthographicCamera":s=new Ql(t.left,t.right,t.top,t.bottom,t.near,t.far),void 0!==t.zoom&&(s.zoom=t.zoom),void 0!==t.view&&(s.view=Object.assign({},t.view));break;case"AmbientLight":s=new tc(t.color,t.intensity);break;case"DirectionalLight":s=new $l(t.color,t.intensity);break;case"PointLight":s=new Zl(t.color,t.intensity,t.distance,t.decay);break;case"RectAreaLight":s=new ec(t.color,t.intensity,t.width,t.height);break;case"SpotLight":s=new jl(t.color,t.intensity,t.distance,t.angle,t.penumbra,t.decay);break;case"HemisphereLight":s=new Hl(t.color,t.groundColor,t.intensity);break;case"LightProbe":s=(new ic).fromJSON(t);break;case"SkinnedMesh":a=l(t.geometry),o=c(t.material),s=new $s(a,o),void 0!==t.bindMode&&(s.bindMode=t.bindMode),void 0!==t.bindMatrix&&s.bindMatrix.fromArray(t.bindMatrix),void 0!==t.skeleton&&(s.skeleton=t.skeleton);break;case"Mesh":a=l(t.geometry),o=c(t.material),s=new Gn(a,o);break;case"InstancedMesh":a=l(t.geometry),o=c(t.material);const e=t.count,n=t.instanceMatrix,i=t.instanceColor;s=new ca(a,o,e),s.instanceMatrix=new en(new Float32Array(n.array),16),void 0!==i&&(s.instanceColor=new en(new Float32Array(i.array),i.itemSize));break;case"LOD":s=new Xs;break;case"Line":s=new ga(l(t.geometry),c(t.material));break;case"LineLoop":s=new _a(l(t.geometry),c(t.material));break;case"LineSegments":s=new xa(l(t.geometry),c(t.material));break;case"PointCloud":case"Points":s=new Ea(l(t.geometry),c(t.material));break;case"Sprite":s=new Vs(c(t.material));break;case"Group":s=new gs;break;case"Bone":s=new ta;break;default:s=new Pe}if(s.uuid=t.uuid,void 0!==t.name&&(s.name=t.name),void 0!==t.matrix?(s.matrix.fromArray(t.matrix),void 0!==t.matrixAutoUpdate&&(s.matrixAutoUpdate=t.matrixAutoUpdate),s.matrixAutoUpdate&&s.matrix.decompose(s.position,s.quaternion,s.scale)):(void 0!==t.position&&s.position.fromArray(t.position),void 0!==t.rotation&&s.rotation.fromArray(t.rotation),void 0!==t.quaternion&&s.quaternion.fromArray(t.quaternion),void 0!==t.scale&&s.scale.fromArray(t.scale)),void 0!==t.castShadow&&(s.castShadow=t.castShadow),void 0!==t.receiveShadow&&(s.receiveShadow=t.receiveShadow),t.shadow&&(void 0!==t.shadow.bias&&(s.shadow.bias=t.shadow.bias),void 0!==t.shadow.normalBias&&(s.shadow.normalBias=t.shadow.normalBias),void 0!==t.shadow.radius&&(s.shadow.radius=t.shadow.radius),void 0!==t.shadow.mapSize&&s.shadow.mapSize.fromArray(t.shadow.mapSize),void 0!==t.shadow.camera&&(s.shadow.camera=this.parseObject(t.shadow.camera))),void 0!==t.visible&&(s.visible=t.visible),void 0!==t.frustumCulled&&(s.frustumCulled=t.frustumCulled),void 0!==t.renderOrder&&(s.renderOrder=t.renderOrder),void 0!==t.userData&&(s.userData=t.userData),void 0!==t.layers&&(s.layers.mask=t.layers),void 0!==t.children){const a=t.children;for(let t=0;t<a.length;t++)s.add(this.parseObject(a[t],e,n,i,r))}if(void 0!==t.animations){const e=t.animations;for(let t=0;t<e.length;t++){const n=e[t];s.animations.push(r[n])}}if("LOD"===t.type){void 0!==t.autoUpdate&&(s.autoUpdate=t.autoUpdate);const e=t.levels;for(let t=0;t<e.length;t++){const n=e[t],i=s.getObjectByProperty("uuid",n.object);void 0!==i&&s.addLevel(i,n.distance)}}return s}bindSkeletons(t,e){0!==Object.keys(e).length&&t.traverse((function(t){if(!0===t.isSkinnedMesh&&void 0!==t.skeleton){const n=e[t.skeleton];void 0===n?console.warn("THREE.ObjectLoader: No skeleton found with UUID:",t.skeleton):t.bind(n,t.bindMatrix)}}))}setTexturePath(t){return console.warn("THREE.ObjectLoader: .setTexturePath() has been renamed to .setResourcePath()."),this.setResourcePath(t)}},t.ObjectSpaceNormalMap=1,t.OctahedronBufferGeometry=Go,t.OctahedronGeometry=Go,t.OneFactor=201,t.OneMinusDstAlphaFactor=207,t.OneMinusDstColorFactor=209,t.OneMinusSrcAlphaFactor=205,t.OneMinusSrcColorFactor=203,t.OrthographicCamera=Ql,t.PCFShadowMap=1,t.PCFSoftShadowMap=2,t.PMREMGenerator=class{constructor(t){this._renderer=t,this._pingPongRenderTarget=null,this._blurMaterial=function(t){const e=new Float32Array(t),n=new Rt(0,1,0);return new tl({name:"SphericalGaussianBlur",defines:{n:t},uniforms:{envMap:{value:null},samples:{value:1},weights:{value:e},latitudinal:{value:!1},dTheta:{value:0},mipInt:{value:0},poleAxis:{value:n},inputEncoding:{value:Bh[3e3]},outputEncoding:{value:Bh[3e3]}},vertexShader:tu(),fragmentShader:`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform sampler2D envMap;\n\t\t\tuniform int samples;\n\t\t\tuniform float weights[ n ];\n\t\t\tuniform bool latitudinal;\n\t\t\tuniform float dTheta;\n\t\t\tuniform float mipInt;\n\t\t\tuniform vec3 poleAxis;\n\n\t\t\t${eu()}\n\n\t\t\t#define ENVMAP_TYPE_CUBE_UV\n\t\t\t#include <cube_uv_reflection_fragment>\n\n\t\t\tvec3 getSample( float theta, vec3 axis ) {\n\n\t\t\t\tfloat cosTheta = cos( theta );\n\t\t\t\t// Rodrigues' axis-angle rotation\n\t\t\t\tvec3 sampleDirection = vOutputDirection * cosTheta\n\t\t\t\t\t+ cross( axis, vOutputDirection ) * sin( theta )\n\t\t\t\t\t+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );\n\n\t\t\t\treturn bilinearCubeUV( envMap, sampleDirection, mipInt );\n\n\t\t\t}\n\n\t\t\tvoid main() {\n\n\t\t\t\tvec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );\n\n\t\t\t\tif ( all( equal( axis, vec3( 0.0 ) ) ) ) {\n\n\t\t\t\t\taxis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );\n\n\t\t\t\t}\n\n\t\t\t\taxis = normalize( axis );\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t\t\t\tgl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );\n\n\t\t\t\tfor ( int i = 1; i < n; i++ ) {\n\n\t\t\t\t\tif ( i >= samples ) {\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tfloat theta = dTheta * float( i );\n\t\t\t\t\tgl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );\n\t\t\t\t\tgl_FragColor.rgb += weights[ i ] * getSample( theta, axis );\n\n\t\t\t\t}\n\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t`,blending:0,depthTest:!1,depthWrite:!1})}(Nh),this._equirectShader=null,this._cubemapShader=null,this._compileMaterial(this._blurMaterial)}fromScene(t,e=0,n=.1,i=100){Vh=this._renderer.getRenderTarget();const r=this._allocateTargets();return this._sceneToCubeUV(t,n,i,r),e>0&&this._blur(r,0,0,e),this._applyPMREM(r),this._cleanup(r),r}fromEquirectangular(t){return this._fromTexture(t)}fromCubemap(t){return this._fromTexture(t)}compileCubemapShader(){null===this._cubemapShader&&(this._cubemapShader=$h(),this._compileMaterial(this._cubemapShader))}compileEquirectangularShader(){null===this._equirectShader&&(this._equirectShader=Kh(),this._compileMaterial(this._equirectShader))}dispose(){this._blurMaterial.dispose(),null!==this._cubemapShader&&this._cubemapShader.dispose(),null!==this._equirectShader&&this._equirectShader.dispose();for(let t=0;t<Hh.length;t++)Hh[t].dispose()}_cleanup(t){this._pingPongRenderTarget.dispose(),this._renderer.setRenderTarget(Vh),t.scissorTest=!1,Qh(t,0,0,t.width,t.height)}_fromTexture(t){Vh=this._renderer.getRenderTarget();const e=this._allocateTargets(t);return this._textureToCubeUV(t,e),this._applyPMREM(e),this._cleanup(e),e}_allocateTargets(t){const e={magFilter:p,minFilter:p,generateMipmaps:!1,type:x,format:1023,encoding:Yh(t)?t.encoding:Z,depthBuffer:!1},n=Zh(e);return n.depthBuffer=!t,this._pingPongRenderTarget=Zh(e),n}_compileMaterial(t){const e=new Gn(Hh[0],t);this._renderer.compile(e,Oh)}_sceneToCubeUV(t,e,n,i){const r=new Jn(90,1,e,n),s=[1,-1,1,1,1,1],a=[1,1,1,-1,-1,-1],o=this._renderer,l=o.autoClear,c=o.outputEncoding,h=o.toneMapping;o.getClearColor(kh),o.toneMapping=0,o.outputEncoding=X,o.autoClear=!1;let u=!1;const d=t.background;if(d){if(d.isColor){zh.color.copy(d).convertSRGBToLinear(),t.background=null;const e=Xh(zh.color);zh.opacity=e,u=!0}}else{zh.color.copy(kh).convertSRGBToLinear();const t=Xh(zh.color);zh.opacity=t,u=!0}for(let e=0;e<6;e++){const n=e%3;0==n?(r.up.set(0,s[e],0),r.lookAt(a[e],0,0)):1==n?(r.up.set(0,0,s[e]),r.lookAt(0,a[e],0)):(r.up.set(0,s[e],0),r.lookAt(0,0,a[e])),Qh(i,n*Ph,e>2?Ph:0,Ph,Ph),o.setRenderTarget(i),u&&o.render(Fh,r),o.render(t,r)}o.toneMapping=h,o.outputEncoding=c,o.autoClear=l}_textureToCubeUV(t,e){const n=this._renderer;t.isCubeTexture?null==this._cubemapShader&&(this._cubemapShader=$h()):null==this._equirectShader&&(this._equirectShader=Kh());const i=t.isCubeTexture?this._cubemapShader:this._equirectShader,r=new Gn(Hh[0],i),s=i.uniforms;s.envMap.value=t,t.isCubeTexture||s.texelSize.value.set(1/t.image.width,1/t.image.height),s.inputEncoding.value=Bh[t.encoding],s.outputEncoding.value=Bh[e.texture.encoding],Qh(e,0,0,3*Ph,2*Ph),n.setRenderTarget(e),n.render(r,Oh)}_applyPMREM(t){const e=this._renderer,n=e.autoClear;e.autoClear=!1;for(let e=1;e<Ih;e++){const n=Math.sqrt(Gh[e]*Gh[e]-Gh[e-1]*Gh[e-1]),i=qh[(e-1)%qh.length];this._blur(t,e-1,e,n,i)}e.autoClear=n}_blur(t,e,n,i,r){const s=this._pingPongRenderTarget;this._halfBlur(t,s,e,n,i,"latitudinal",r),this._halfBlur(s,t,n,n,i,"longitudinal",r)}_halfBlur(t,e,n,i,r,s,a){const o=this._renderer,l=this._blurMaterial;"latitudinal"!==s&&"longitudinal"!==s&&console.error("blur direction must be either latitudinal or longitudinal!");const c=new Gn(Hh[i],l),h=l.uniforms,u=Uh[n]-1,d=isFinite(r)?Math.PI/(2*u):2*Math.PI/39,p=r/d,m=isFinite(r)?1+Math.floor(3*p):Nh;m>Nh&&console.warn(`sigmaRadians, ${r}, is too large and will clip, as it requested ${m} samples when the maximum is set to 20`);const f=[];let g=0;for(let t=0;t<Nh;++t){const e=t/p,n=Math.exp(-e*e/2);f.push(n),0==t?g+=n:t<m&&(g+=2*n)}for(let t=0;t<f.length;t++)f[t]=f[t]/g;h.envMap.value=t.texture,h.samples.value=m,h.weights.value=f,h.latitudinal.value="latitudinal"===s,a&&(h.poleAxis.value=a),h.dTheta.value=d,h.mipInt.value=8-n,h.inputEncoding.value=Bh[t.texture.encoding],h.outputEncoding.value=Bh[t.texture.encoding];const v=Uh[i];Qh(e,3*Math.max(0,Ph-2*v),(0===i?0:2*Ph)+2*v*(i>4?i-8+4:0),3*v,2*v),o.setRenderTarget(e),o.render(c,Oh)}},t.ParametricBufferGeometry=ko,t.ParametricGeometry=ko,t.Particle=function(t){return console.warn("THREE.Particle has been renamed to THREE.Sprite."),new Vs(t)},t.ParticleBasicMaterial=function(t){return console.warn("THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial."),new ba(t)},t.ParticleSystem=function(t,e){return console.warn("THREE.ParticleSystem has been renamed to THREE.Points."),new Ea(t,e)},t.ParticleSystemMaterial=function(t){return console.warn("THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial."),new ba(t)},t.Path=zl,t.PerspectiveCamera=Jn,t.Plane=ii,t.PlaneBufferGeometry=ci,t.PlaneGeometry=ci,t.PlaneHelper=class extends ga{constructor(t,e=1,n=16776960){const i=n,r=new wn;r.setAttribute("position",new un([1,-1,1,-1,1,1,-1,-1,1,1,1,1,-1,1,1,-1,-1,1,1,-1,1,1,1,1,0,0,1,0,0,0],3)),r.computeBoundingSphere(),super(r,new ha({color:i,toneMapped:!1})),this.type="PlaneHelper",this.plane=t,this.size=e;const s=new wn;s.setAttribute("position",new un([1,1,1,-1,1,1,-1,-1,1,1,1,1,-1,-1,1,1,-1,1],3)),s.computeBoundingSphere(),this.add(new Gn(s,new Ke({color:i,opacity:.2,transparent:!0,depthWrite:!1,toneMapped:!1})))}updateMatrixWorld(t){let e=-this.plane.constant;Math.abs(e)<1e-8&&(e=1e-8),this.scale.set(.5*this.size,.5*this.size,e),this.children[0].material.side=e<0?1:0,this.lookAt(this.plane.normal),super.updateMatrixWorld(t)}},t.PointCloud=function(t,e){return console.warn("THREE.PointCloud has been renamed to THREE.Points."),new Ea(t,e)},t.PointCloudMaterial=function(t){return console.warn("THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial."),new ba(t)},t.PointLight=Zl,t.PointLightHelper=class extends Gn{constructor(t,e,n){super(new jo(e,4,2),new Ke({wireframe:!0,fog:!1,toneMapped:!1})),this.light=t,this.light.updateMatrixWorld(),this.color=n,this.type="PointLightHelper",this.matrix=this.light.matrixWorld,this.matrixAutoUpdate=!1,this.update()}dispose(){this.geometry.dispose(),this.material.dispose()}update(){void 0!==this.color?this.material.color.set(this.color):this.material.color.copy(this.light.color)}},t.Points=Ea,t.PointsMaterial=ba,t.PolarGridHelper=class extends xa{constructor(t=10,e=16,n=8,i=64,r=4473924,s=8947848){r=new Qe(r),s=new Qe(s);const a=[],o=[];for(let n=0;n<=e;n++){const i=n/e*(2*Math.PI),l=Math.sin(i)*t,c=Math.cos(i)*t;a.push(0,0,0),a.push(l,0,c);const h=1&n?r:s;o.push(h.r,h.g,h.b),o.push(h.r,h.g,h.b)}for(let e=0;e<=n;e++){const l=1&e?r:s,c=t-t/n*e;for(let t=0;t<i;t++){let e=t/i*(2*Math.PI),n=Math.sin(e)*c,r=Math.cos(e)*c;a.push(n,0,r),o.push(l.r,l.g,l.b),e=(t+1)/i*(2*Math.PI),n=Math.sin(e)*c,r=Math.cos(e)*c,a.push(n,0,r),o.push(l.r,l.g,l.b)}}const l=new wn;l.setAttribute("position",new un(a,3)),l.setAttribute("color",new un(o,3));super(l,new ha({vertexColors:!0,toneMapped:!1})),this.type="PolarGridHelper"}},t.PolyhedronBufferGeometry=Ba,t.PolyhedronGeometry=Ba,t.PositionalAudio=class extends Rc{constructor(t){super(t),this.panner=this.context.createPanner(),this.panner.panningModel="HRTF",this.panner.connect(this.gain)}getOutput(){return this.panner}getRefDistance(){return this.panner.refDistance}setRefDistance(t){return this.panner.refDistance=t,this}getRolloffFactor(){return this.panner.rolloffFactor}setRolloffFactor(t){return this.panner.rolloffFactor=t,this}getDistanceModel(){return this.panner.distanceModel}setDistanceModel(t){return this.panner.distanceModel=t,this}getMaxDistance(){return this.panner.maxDistance}setMaxDistance(t){return this.panner.maxDistance=t,this}setDirectionalCone(t,e,n){return this.panner.coneInnerAngle=t,this.panner.coneOuterAngle=e,this.panner.coneOuterGain=n,this}updateMatrixWorld(t){if(super.updateMatrixWorld(t),!0===this.hasPlaybackControl&&!1===this.isPlaying)return;this.matrixWorld.decompose(Cc,Pc,Dc),Ic.set(0,0,1).applyQuaternion(Pc);const e=this.panner;if(e.positionX){const t=this.context.currentTime+this.listener.timeDelta;e.positionX.linearRampToValueAtTime(Cc.x,t),e.positionY.linearRampToValueAtTime(Cc.y,t),e.positionZ.linearRampToValueAtTime(Cc.z,t),e.orientationX.linearRampToValueAtTime(Ic.x,t),e.orientationY.linearRampToValueAtTime(Ic.y,t),e.orientationZ.linearRampToValueAtTime(Ic.z,t)}else e.setPosition(Cc.x,Cc.y,Cc.z),e.setOrientation(Ic.x,Ic.y,Ic.z)}},t.PropertyBinding=qc,t.PropertyMixer=Bc,t.QuadraticBezierCurve=ro,t.QuadraticBezierCurve3=so,t.Quaternion=Lt,t.QuaternionKeyframeTrack=_l,t.QuaternionLinearInterpolant=xl,t.REVISION=e,t.RGBADepthPacking=3201,t.RGBAFormat=E,t.RGBAIntegerFormat=1033,t.RGBA_ASTC_10x10_Format=37819,t.RGBA_ASTC_10x5_Format=37816,t.RGBA_ASTC_10x6_Format=37817,t.RGBA_ASTC_10x8_Format=37818,t.RGBA_ASTC_12x10_Format=37820,t.RGBA_ASTC_12x12_Format=37821,t.RGBA_ASTC_4x4_Format=37808,t.RGBA_ASTC_5x4_Format=37809,t.RGBA_ASTC_5x5_Format=37810,t.RGBA_ASTC_6x5_Format=37811,t.RGBA_ASTC_6x6_Format=37812,t.RGBA_ASTC_8x5_Format=37813,t.RGBA_ASTC_8x6_Format=37814,t.RGBA_ASTC_8x8_Format=37815,t.RGBA_BPTC_Format=36492,t.RGBA_ETC2_EAC_Format=O,t.RGBA_PVRTC_2BPPV1_Format=z,t.RGBA_PVRTC_4BPPV1_Format=B,t.RGBA_S3TC_DXT1_Format=C,t.RGBA_S3TC_DXT3_Format=P,t.RGBA_S3TC_DXT5_Format=D,t.RGBDEncoding=$,t.RGBEEncoding=Z,t.RGBEFormat=1023,t.RGBFormat=T,t.RGBIntegerFormat=1032,t.RGBM16Encoding=K,t.RGBM7Encoding=Q,t.RGB_ETC1_Format=36196,t.RGB_ETC2_Format=F,t.RGB_PVRTC_2BPPV1_Format=N,t.RGB_PVRTC_4BPPV1_Format=I,t.RGB_S3TC_DXT1_Format=R,t.RGFormat=1030,t.RGIntegerFormat=1031,t.RawShaderMaterial=tl,t.Ray=se,t.Raycaster=class{constructor(t,e,n=0,i=1/0){this.ray=new se(t,e),this.near=n,this.far=i,this.camera=null,this.layers=new ve,this.params={Mesh:{},Line:{threshold:1},LOD:{},Points:{threshold:1},Sprite:{}}}set(t,e){this.ray.set(t,e)}setFromCamera(t,e){e&&e.isPerspectiveCamera?(this.ray.origin.setFromMatrixPosition(e.matrixWorld),this.ray.direction.set(t.x,t.y,.5).unproject(e).sub(this.ray.origin).normalize(),this.camera=e):e&&e.isOrthographicCamera?(this.ray.origin.set(t.x,t.y,(e.near+e.far)/(e.near-e.far)).unproject(e),this.ray.direction.set(0,0,-1).transformDirection(e.matrixWorld),this.camera=e):console.error("THREE.Raycaster: Unsupported camera type: "+e.type)}intersectObject(t,e=!1,n=[]){return th(t,this,n,e),n.sort($c),n}intersectObjects(t,e=!1,n=[]){for(let i=0,r=t.length;i<r;i++)th(t[i],this,n,e);return n.sort($c),n}},t.RectAreaLight=ec,t.RedFormat=1028,t.RedIntegerFormat=1029,t.ReinhardToneMapping=2,t.RepeatWrapping=h,t.ReplaceStencilOp=7681,t.ReverseSubtractEquation=102,t.RingBufferGeometry=Vo,t.RingGeometry=Vo,t.SRGB8_ALPHA8_ASTC_10x10_Format=37851,t.SRGB8_ALPHA8_ASTC_10x5_Format=37848,t.SRGB8_ALPHA8_ASTC_10x6_Format=37849,t.SRGB8_ALPHA8_ASTC_10x8_Format=37850,t.SRGB8_ALPHA8_ASTC_12x10_Format=37852,t.SRGB8_ALPHA8_ASTC_12x12_Format=37853,t.SRGB8_ALPHA8_ASTC_4x4_Format=37840,t.SRGB8_ALPHA8_ASTC_5x4_Format=37841,t.SRGB8_ALPHA8_ASTC_5x5_Format=37842,t.SRGB8_ALPHA8_ASTC_6x5_Format=37843,t.SRGB8_ALPHA8_ASTC_6x6_Format=37844,t.SRGB8_ALPHA8_ASTC_8x5_Format=37845,t.SRGB8_ALPHA8_ASTC_8x6_Format=37846,t.SRGB8_ALPHA8_ASTC_8x8_Format=37847,t.Scene=Ts,t.SceneUtils=nu,t.ShaderChunk=hi,t.ShaderLib=di,t.ShaderMaterial=Xn,t.ShadowMaterial=$o,t.Shape=Fl,t.ShapeBufferGeometry=Wo,t.ShapeGeometry=Wo,t.ShapePath=pc,t.ShapeUtils=No,t.ShortType=1011,t.Skeleton=ra,t.SkeletonHelper=uh,t.SkinnedMesh=$s,t.SmoothShading=2,t.Sphere=Qt,t.SphereBufferGeometry=jo,t.SphereGeometry=jo,t.Spherical=class{constructor(t=1,e=0,n=0){return this.radius=t,this.phi=e,this.theta=n,this}set(t,e,n){return this.radius=t,this.phi=e,this.theta=n,this}copy(t){return this.radius=t.radius,this.phi=t.phi,this.theta=t.theta,this}makeSafe(){const t=1e-6;return this.phi=Math.max(t,Math.min(Math.PI-t,this.phi)),this}setFromVector3(t){return this.setFromCartesianCoords(t.x,t.y,t.z)}setFromCartesianCoords(t,e,n){return this.radius=Math.sqrt(t*t+e*e+n*n),0===this.radius?(this.theta=0,this.phi=0):(this.theta=Math.atan2(t,n),this.phi=Math.acos(ht(e/this.radius,-1,1))),this}clone(){return(new this.constructor).copy(this)}},t.SphericalHarmonics3=nc,t.SplineCurve=ao,t.SpotLight=jl,t.SpotLightHelper=class extends Pe{constructor(t,e){super(),this.light=t,this.light.updateMatrixWorld(),this.matrix=t.matrixWorld,this.matrixAutoUpdate=!1,this.color=e;const n=new wn,i=[0,0,0,0,0,1,0,0,0,1,0,1,0,0,0,-1,0,1,0,0,0,0,1,1,0,0,0,0,-1,1];for(let t=0,e=1,n=32;t<n;t++,e++){const r=t/n*Math.PI*2,s=e/n*Math.PI*2;i.push(Math.cos(r),Math.sin(r),1,Math.cos(s),Math.sin(s),1)}n.setAttribute("position",new un(i,3));const r=new ha({fog:!1,toneMapped:!1});this.cone=new xa(n,r),this.add(this.cone),this.update()}dispose(){this.cone.geometry.dispose(),this.cone.material.dispose()}update(){this.light.updateMatrixWorld();const t=this.light.distance?this.light.distance:1e3,e=t*Math.tan(this.light.angle);this.cone.scale.set(e,e,t),oh.setFromMatrixPosition(this.light.target.matrixWorld),this.cone.lookAt(oh),void 0!==this.color?this.cone.material.color.set(this.color):this.cone.material.color.copy(this.light.color)}},t.Sprite=Vs,t.SpriteMaterial=Rs,t.SrcAlphaFactor=204,t.SrcAlphaSaturateFactor=210,t.SrcColorFactor=202,t.StaticCopyUsage=35046,t.StaticDrawUsage=et,t.StaticReadUsage=35045,t.StereoCamera=class{constructor(){this.type="StereoCamera",this.aspect=1,this.eyeSep=.064,this.cameraL=new Jn,this.cameraL.layers.enable(1),this.cameraL.matrixAutoUpdate=!1,this.cameraR=new Jn,this.cameraR.layers.enable(2),this.cameraR.matrixAutoUpdate=!1,this._cache={focus:null,fov:null,aspect:null,near:null,far:null,zoom:null,eyeSep:null}}update(t){const e=this._cache;if(e.focus!==t.focus||e.fov!==t.fov||e.aspect!==t.aspect*this.aspect||e.near!==t.near||e.far!==t.far||e.zoom!==t.zoom||e.eyeSep!==this.eyeSep){e.focus=t.focus,e.fov=t.fov,e.aspect=t.aspect*this.aspect,e.near=t.near,e.far=t.far,e.zoom=t.zoom,e.eyeSep=this.eyeSep;const n=t.projectionMatrix.clone(),i=e.eyeSep/2,r=i*e.near/e.focus,s=e.near*Math.tan(ot*e.fov*.5)/e.zoom;let a,o;Mc.elements[12]=-i,bc.elements[12]=i,a=-s*e.aspect+r,o=s*e.aspect+r,n.elements[0]=2*e.near/(o-a),n.elements[8]=(o+a)/(o-a),this.cameraL.projectionMatrix.copy(n),a=-s*e.aspect-r,o=s*e.aspect-r,n.elements[0]=2*e.near/(o-a),n.elements[8]=(o+a)/(o-a),this.cameraR.projectionMatrix.copy(n)}this.cameraL.matrixWorld.copy(t.matrixWorld).multiply(Mc),this.cameraR.matrixWorld.copy(t.matrixWorld).multiply(bc)}},t.StreamCopyUsage=35042,t.StreamDrawUsage=35040,t.StreamReadUsage=35041,t.StringKeyframeTrack=bl,t.SubtractEquation=101,t.SubtractiveBlending=3,t.TOUCH={ROTATE:0,PAN:1,DOLLY_PAN:2,DOLLY_ROTATE:3},t.TangentSpaceNormalMap=0,t.TetrahedronBufferGeometry=qo,t.TetrahedronGeometry=qo,t.TextBufferGeometry=Xo,t.TextGeometry=Xo,t.Texture=Mt,t.TextureLoader=Nl,t.TorusBufferGeometry=Yo,t.TorusGeometry=Yo,t.TorusKnotBufferGeometry=Jo,t.TorusKnotGeometry=Jo,t.Triangle=ke,t.TriangleFanDrawMode=2,t.TriangleStripDrawMode=1,t.TrianglesDrawMode=0,t.TubeBufferGeometry=Zo,t.TubeGeometry=Zo,t.UVMapping=i,t.Uint16Attribute=function(t,e){return console.warn("THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead."),new on(t,e)},t.Uint16BufferAttribute=on,t.Uint32Attribute=function(t,e){return console.warn("THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead."),new cn(t,e)},t.Uint32BufferAttribute=cn,t.Uint8Attribute=function(t,e){return console.warn("THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead."),new rn(t,e)},t.Uint8BufferAttribute=rn,t.Uint8ClampedAttribute=function(t,e){return console.warn("THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead."),new sn(t,e)},t.Uint8ClampedBufferAttribute=sn,t.Uniform=Zc,t.UniformsLib=ui,t.UniformsUtils=qn,t.UnsignedByteType=x,t.UnsignedInt248Type=S,t.UnsignedIntType=b,t.UnsignedShort4444Type=1017,t.UnsignedShort5551Type=1018,t.UnsignedShort565Type=1019,t.UnsignedShortType=_,t.VSMShadowMap=3,t.Vector2=vt,t.Vector3=Rt,t.Vector4=St,t.VectorKeyframeTrack=Ml,t.Vertex=function(t,e,n){return console.warn("THREE.Vertex has been removed. Use THREE.Vector3 instead."),new Rt(t,e,n)},t.VertexColors=2,t.VideoTexture=La,t.WebGL1Renderer=Ms,t.WebGLCubeRenderTarget=$n,t.WebGLMultipleRenderTargets=Et,t.WebGLMultisampleRenderTarget=At,t.WebGLRenderTarget=Tt,t.WebGLRenderTargetCube=function(t,e,n){return console.warn("THREE.WebGLRenderTargetCube( width, height, options ) is now WebGLCubeRenderTarget( size, options )."),new $n(t,n)},t.WebGLRenderer=bs,t.WebGLUtils=ms,t.WireframeGeometry=Qo,t.WireframeHelper=function(t,e){return console.warn("THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead."),new xa(new Qo(t.geometry),new ha({color:void 0!==e?e:16777215}))},t.WrapAroundEnding=W,t.XHRLoader=function(t){return console.warn("THREE.XHRLoader has been renamed to THREE.FileLoader."),new Cl(t)},t.ZeroCurvatureEnding=k,t.ZeroFactor=200,t.ZeroSlopeEnding=V,t.ZeroStencilOp=0,t.sRGBEncoding=Y,Object.defineProperty(t,"__esModule",{value:!0})}));
diff --git a/index.html b/index.html
index 72565c1..076fb14 100644
--- a/index.html
+++ b/index.html
@@ -124,8 +124,6 @@ <h3>Fitted Plane</h3>
   <script src="demo/libs/stats.min.js"></script>
   <script src="demo/libs/dat.gui.min.js"></script>
   <script src="demo/libs/three.min.js"></script>
-  <script src="demo/libs/CanvasRenderer.js"></script>
-  <script src="demo/libs/Projector.js"></script>
   <script src="demo/libs/FirstPersonControls.js"></script>
   <script src="build/THREE.Terrain.min.js"></script>
   <script src="src/worley.js"></script>
@@ -136,4 +134,4 @@ <h3>Fitted Plane</h3>
   <script src="demo/index.js"></script>
   <script>setup();</script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/package.json b/package.json
index ed29a82..418564e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "three.terrain.js",
-    "version": "1.6.1",
+    "version": "2.0.0",
     "description": "Extends the Three.js web-based 3D graphics framework to support generating random terrains and rendering terrain from predetermined heightmaps.",
     "homepage": "https://github.com/IceCreamYou/THREE.Terrain",
     "bugs": "https://github.com/IceCreamYou/THREE.Terrain/issues",
@@ -26,11 +26,12 @@
     "license": "MIT",
     "readmeFilename": "README.md",
     "devDependencies": {
-        "grunt": "~0.4.5",
-        "grunt-contrib-concat": "~0.5.1",
-        "grunt-contrib-jshint": "~0.11.2",
-        "grunt-contrib-uglify": "~0.9.1",
-        "grunt-jscs": "~2.1.0",
-        "grunt-contrib-watch": "^0.6.1"
+        "grunt": "^1.4.1",
+        "grunt-contrib-concat": "^1.0.1",
+        "grunt-contrib-jshint": "^2.1.0",
+        "grunt-contrib-uglify": "^5.0.1",
+        "grunt-contrib-watch": "^1.1.0",
+        "grunt-jscs": "^3.0.1",
+        "three": "^0.130.1"
     }
 }
diff --git a/src/analysis.js b/src/analysis.js
index cf519af..f2ef6d3 100644
--- a/src/analysis.js
+++ b/src/analysis.js
@@ -14,13 +14,13 @@
  *   An object containing statistical information about the terrain.
  */
 THREE.Terrain.Analyze = function(mesh, options) {
-    if (mesh.geometry.vertices.length < 3) {
+    if (mesh.geometry.attributes.position.count < 3) {
         throw new Error('Not enough vertices to analyze');
     }
 
     var sortNumeric = function(a, b) { return a - b; },
         elevations = Array.prototype.sort.call(
-            THREE.Terrain.toArray1D(mesh.geometry.vertices),
+            THREE.Terrain.toArray1D(mesh.geometry.attributes.position.array),
             sortNumeric
         ),
         numVertices = elevations.length,
@@ -33,8 +33,8 @@ THREE.Terrain.Analyze = function(mesh, options) {
         groeneveldMeedenSkewElevation = 0,
         kurtosisElevation = 0,
         up = mesh.up.clone().applyAxisAngle(new THREE.Vector3(1, 0, 0), 0.5*Math.PI), // correct for mesh rotation
-        slopes = mesh.geometry.faces
-            .map(function(v) { return v.normal.angleTo(up) * 180 / Math.PI; })
+        slopes = faceNormals(mesh.geometry, options)
+            .map(function(normal) { return normal.angleTo(up) * 180 / Math.PI; })
             .sort(sortNumeric),
         numFaces = slopes.length,
         maxSlope = percentile(slopes, 1),
@@ -42,7 +42,7 @@ THREE.Terrain.Analyze = function(mesh, options) {
         medianSlope = percentile(slopes, 0.5),
         meanSlope = mean(slopes),
         centroid = mesh.position.clone().setZ(meanElevation),
-        fittedPlaneNormal = getFittedPlaneNormal(mesh.geometry.vertices, centroid),
+        fittedPlaneNormal = getFittedPlaneNormal(mesh.geometry.attributes.position.array, centroid),
         fittedPlaneSlope = fittedPlaneNormal.angleTo(up) * 180 / Math.PI,
         stdevSlope = 0,
         pearsonSkewSlope = 0,
@@ -90,13 +90,13 @@ THREE.Terrain.Analyze = function(mesh, options) {
         for (var j = 0; j < yl; j++) {
             var neighborhoodMax = -Infinity,
                 neighborhoodMin = Infinity,
-                v = mesh.geometry.vertices[j*xl + ii].z,
+                v = mesh.geometry.attributes.position.array[(j*xl + ii) * 3 + 2],
                 sum = 0,
                 c = 0;
             for (var n = -1; n <= 1; n++) {
                 for (var m = -1; m <= 1; m++) {
                     if (ii+m >= 0 && j+n >= 0 && ii+m < xl && j+n < yl && !(n === 0 && m === 0)) {
-                        var val = mesh.geometry.vertices[(j+n)*xl + ii + m].z;
+                        var val = mesh.geometry.attributes.position.array[((j+n)*xl + ii + m) * 3 + 2];
                         sum += val;
                         c++;
                         if (val > neighborhoodMax) neighborhoodMax = val;
@@ -191,7 +191,7 @@ THREE.Terrain.Analyze = function(mesh, options) {
             normal: fittedPlaneNormal,
             slope: fittedPlaneSlope,
             pctExplained: percentVariationExplainedByFittedPlane(
-                mesh.geometry.vertices,
+                mesh.geometry.attributes.position.array,
                 centroid,
                 fittedPlaneNormal,
                 options.maxHeight - options.minHeight
@@ -257,11 +257,40 @@ function percentRank(arr, v) {
     return 1;
 }
 
+/**
+ * Returns the face normals for the specified geometry.
+ *
+ * @param {THREE.BufferGeometry} geometry
+ *   The indexed geometry to analyze.
+ * @param {Object} options
+ *   Includes the `xSegments` and `ySegments` - the number of row and column
+ *   segments of the plane geometry.
+ */
+function faceNormals(geometry, options) {
+    geometry = geometry.toNonIndexed();
+    var normals = new Array(Math.round(geometry.attributes.position.array.length / 9)),
+        gArray = geometry.attributes.position.array,
+        vertex1 = new THREE.Vector3(),
+        vertex2 = new THREE.Vector3(),
+        vertex3 = new THREE.Vector3();
+
+    for (var i = 0, j = 0; i < geometry.attributes.position.array.length; i += 9, j++) {
+        vertex1.set(gArray[i + 0], gArray[i + 1], gArray[i + 2]);
+        vertex2.set(gArray[i + 3], gArray[i + 4], gArray[i + 5]);
+        vertex3.set(gArray[i + 6], gArray[i + 7], gArray[i + 8]);
+
+        var faceNormal = new THREE.Vector3();
+        THREE.Triangle.getNormal(vertex1, vertex2, vertex3, faceNormal);
+        normals[j] = faceNormal;
+    }
+    return normals;
+}
+
 /**
  * Gets the normal vector of the fitted plane of a 3D array of points.
  *
- * @param {THREE.Vector3[]} points
- *   A 3D array of vertices to which to fit a plane.
+ * @param {Float32Array} points
+ *   The vertex positions of the geometry to analyze.
  * @param {THREE.Vector3} centroid
  *   The centroid of the vertex cloud.
  *
@@ -279,8 +308,8 @@ function getFittedPlaneNormal(points, centroid) {
     if (n < 3) throw new Error('At least three points are required to fit a plane');
 
     var r = new THREE.Vector3();
-    for (var i = 0, l = points.length; i < l; i++) {
-        r.copy(points[i]).sub(centroid);
+    for (var i = 0, l = points.length; i < l; i += 3) {
+        r.set(points[i], points[i+1], points[i+2]).sub(centroid);
         xx += r.x * r.x;
         xy += r.x * r.y;
         xz += r.x * r.z;
@@ -501,8 +530,8 @@ function drawHistogram(buckets, canvas, minV, maxV, append) {
  * the terrain elevations and the fitted plane at each vertex, and divides by
  * half the range to arrive at a dimensionless value.
  *
- * @param {THREE.Vector3[]} vertices
- *   The terrain vertices.
+ * @param {Float32Array} vertices
+ *   The terrain vertex positions.
  * @param {THREE.Vector3} centroid
  *   The fitted plane centroid.
  * @param {THREE.Vector3} normal
@@ -518,12 +547,12 @@ function drawHistogram(buckets, canvas, minV, maxV, append) {
 function percentVariationExplainedByFittedPlane(vertices, centroid, normal, range) {
     var numVertices = vertices.length,
         diff = 0;
-    for (var i = 0; i < numVertices; i++) {
+    for (var i = 0; i < numVertices; i += 3) {
         var fittedZ = Math.sqrt(
-                (vertices[i].x - centroid.x) * (vertices[i].x - centroid.x) +
-                (vertices[i].y - centroid.y) * (vertices[i].y - centroid.y)
+                (vertices[i + 0] - centroid.x) * (vertices[i + 0] - centroid.x) +
+                (vertices[i + 1] - centroid.y) * (vertices[i + 1] - centroid.y)
             ) * Math.tan(normal.z * Math.PI) + centroid.z;
-        diff += (vertices[i].z - fittedZ) * (vertices[i].z - fittedZ);
+        diff += (vertices[i + 2] - fittedZ) * (vertices[i + 2] - fittedZ);
     }
     return 1 - Math.sqrt(diff / numVertices) * 2 / range;
 }
diff --git a/src/brownian.js b/src/brownian.js
index af0f468..842132e 100644
--- a/src/brownian.js
+++ b/src/brownian.js
@@ -18,7 +18,10 @@ THREE.Terrain.Brownian = function(g, options) {
         x = i,
         y = j,
         numVertices = g.length,
-        current = g[j * xl + i],
+        vertices = Array.from(g).map(function(z) {
+            return { z: z };
+        }),
+        current = vertices[j * xl + i],
         randomDirection = Math.random() * Math.PI * 2,
         addX = Math.cos(randomDirection),
         addY = Math.sin(randomDirection),
@@ -40,8 +43,8 @@ THREE.Terrain.Brownian = function(g, options) {
         for (n = -1; n <= 1; n++) {
             for (m = -1; m <= 1; m++) {
                 key = (j+n)*xl + i + m;
-                if (typeof g[key] !== 'undefined' && touched.indexOf(g[key]) === -1 && i+m >= 0 && j+n >= 0 && i+m < xl && j+n < yl && n && m) {
-                    untouched.push(g[key]);
+                if (typeof vertices[key] !== 'undefined' && touched.indexOf(vertices[key]) === -1 && i+m >= 0 && j+n >= 0 && i+m < xl && j+n < yl && n && m) {
+                    untouched.push(vertices[key]);
                 }
             }
         }
@@ -52,7 +55,7 @@ THREE.Terrain.Brownian = function(g, options) {
             randomDirection = Math.random() * Math.PI * 2;
             addX = Math.cos(randomDirection);
             addY = Math.sin(randomDirection);
-            index = g.indexOf(current);
+            index = vertices.indexOf(current);
             i = index % xl;
             j = Math.floor(index / xl);
             x = i;
@@ -70,7 +73,7 @@ THREE.Terrain.Brownian = function(g, options) {
             j = Math.round(u);
 
             // If we hit a touched vertex, look in different directions to try to find an untouched one.
-            for (var k = 0; i >= 0 && j >= 0 && i < xl && j < yl && touched.indexOf(g[j * xl + i]) !== -1 && k < 9; k++) {
+            for (var k = 0; i >= 0 && j >= 0 && i < xl && j < yl && touched.indexOf(vertices[j * xl + i]) !== -1 && k < 9; k++) {
                 randomDirection = Math.random() * Math.PI * 2;
                 addX = Math.cos(randomDirection);
                 addY = Math.sin(randomDirection);
@@ -83,10 +86,10 @@ THREE.Terrain.Brownian = function(g, options) {
             }
 
             // If we found an untouched vertex, make it the current one.
-            if (i >= 0 && j >= 0 && i < xl && j < yl && touched.indexOf(g[j * xl + i]) === -1) {
+            if (i >= 0 && j >= 0 && i < xl && j < yl && touched.indexOf(vertices[j * xl + i]) === -1) {
                 x = u;
                 y = v;
-                current = g[j * xl + i];
+                current = vertices[j * xl + i];
                 var io = untouched.indexOf(current);
                 if (io !== -1) {
                     untouched.splice(io, 1);
@@ -100,7 +103,7 @@ THREE.Terrain.Brownian = function(g, options) {
                 randomDirection = Math.random() * Math.PI * 2;
                 addX = Math.cos(randomDirection);
                 addY = Math.sin(randomDirection);
-                index = g.indexOf(current);
+                index = vertices.indexOf(current);
                 i = index % xl;
                 j = Math.floor(index / xl);
                 x = i;
@@ -114,8 +117,8 @@ THREE.Terrain.Brownian = function(g, options) {
         for (n = -1; n <= 1; n++) {
             for (m = -1; m <= 1; m++) {
                 key = (j+n)*xl + i + m;
-                if (typeof g[key] !== 'undefined' && touched.indexOf(g[key]) !== -1 && i+m >= 0 && j+n >= 0 && i+m < xl && j+n < yl && n && m) {
-                    sum += g[key].z;
+                if (typeof vertices[key] !== 'undefined' && touched.indexOf(vertices[key]) !== -1 && i+m >= 0 && j+n >= 0 && i+m < xl && j+n < yl && n && m) {
+                    sum += vertices[key].z;
                     c++;
                 }
             }
@@ -129,6 +132,10 @@ THREE.Terrain.Brownian = function(g, options) {
         touched.push(current);
     }
 
+    for (i = vertices.length - 1; i >= 0; i--) {
+        g[i] = vertices[i].z;
+    }
+
     // Erase artifacts.
     THREE.Terrain.Smooth(g, options);
     THREE.Terrain.Smooth(g, options);
diff --git a/src/core.js b/src/core.js
index 5fe7456..1ce47a6 100644
--- a/src/core.js
+++ b/src/core.js
@@ -58,9 +58,6 @@
  *     `heightmap` property is smaller. Defaults to true.
  *   - `turbulent`: Whether to perform a turbulence transformation. Defaults to
  *     false.
- *   - `useBufferGeometry`: a Boolean indicating whether to use
- *     THREE.BufferGeometry instead of THREE.Geometry for the Terrain plane.
- *     Defaults to `false`.
  *   - `xSegments`: The number of segments (rows) to divide the terrain plane
  *     into. (This basically determines how detailed the terrain is.) Defaults
  *     to 63.
@@ -87,12 +84,10 @@ THREE.Terrain = function(options) {
         steps: 1,
         stretch: true,
         turbulent: false,
-        useBufferGeometry: false,
         xSegments: 63,
         xSize: 1024,
         ySegments: 63,
         ySize: 1024,
-        _mesh: null, // internal only
     };
     options = options || {};
     for (var opt in defaultOptions) {
@@ -109,42 +104,25 @@ THREE.Terrain = function(options) {
     scene.rotation.x = -0.5 * Math.PI;
 
     // Create the terrain mesh.
-    // To save memory, it is possible to re-use a pre-existing mesh.
-    var mesh = options._mesh;
-    if (mesh && mesh.geometry.type === 'PlaneGeometry' &&
-                mesh.geometry.parameters.widthSegments === options.xSegments &&
-                mesh.geometry.parameters.heightSegments === options.ySegments) {
-        mesh.material = options.material;
-        mesh.scale.x = options.xSize / mesh.geometry.parameters.width;
-        mesh.scale.y = options.ySize / mesh.geometry.parameters.height;
-        for (var i = 0, l = mesh.geometry.vertices.length; i < l; i++) {
-            mesh.geometry.vertices[i].z = 0;
-        }
-    }
-    else {
-        mesh = new THREE.Mesh(
-            new THREE.PlaneGeometry(options.xSize, options.ySize, options.xSegments, options.ySegments),
-            options.material
-        );
-    }
-    delete options._mesh; // Remove the reference for GC
+    var mesh = new THREE.Mesh(
+        new THREE.PlaneGeometry(options.xSize, options.ySize, options.xSegments, options.ySegments),
+        options.material
+    );
 
     // Assign elevation data to the terrain plane from a heightmap or function.
+    var zs = THREE.Terrain.toArray1D(mesh.geometry.attributes.position.array);
     if (options.heightmap instanceof HTMLCanvasElement || options.heightmap instanceof Image) {
-        THREE.Terrain.fromHeightmap(mesh.geometry.vertices, options);
+        THREE.Terrain.fromHeightmap(zs, options);
     }
     else if (typeof options.heightmap === 'function') {
-        options.heightmap(mesh.geometry.vertices, options);
+        options.heightmap(zs, options);
     }
     else {
         console.warn('An invalid value was passed for `options.heightmap`: ' + options.heightmap);
     }
+    THREE.Terrain.fromArray1D(mesh.geometry.attributes.position.array, zs);
     THREE.Terrain.Normalize(mesh, options);
 
-    if (options.useBufferGeometry) {
-        mesh.geometry = (new THREE.BufferGeometry()).fromGeometry(mesh.geometry);
-    }
-
     // lod.addLevel(mesh, options.unit * 10 * Math.pow(2, lodLevel));
 
     scene.add(mesh);
@@ -165,23 +143,25 @@ THREE.Terrain = function(options) {
  *   displayed. Valid options are the same as for {@link THREE.Terrain}().
  */
 THREE.Terrain.Normalize = function(mesh, options) {
-    var v = mesh.geometry.vertices;
+    var zs = THREE.Terrain.toArray1D(mesh.geometry.attributes.position.array);
     if (options.turbulent) {
-        THREE.Terrain.Turbulence(v, options);
+        THREE.Terrain.Turbulence(zs, options);
     }
     if (options.steps > 1) {
-        THREE.Terrain.Step(v, options.steps);
-        THREE.Terrain.Smooth(v, options);
+        THREE.Terrain.Step(zs, options.steps);
+        THREE.Terrain.Smooth(zs, options);
     }
+
     // Keep the terrain within the allotted height range if necessary, and do easing.
-    THREE.Terrain.Clamp(v, options);
+    THREE.Terrain.Clamp(zs, options);
+
     // Call the "after" callback
     if (typeof options.after === 'function') {
-        options.after(v, options);
+        options.after(zs, options);
     }
+    THREE.Terrain.fromArray1D(mesh.geometry.attributes.position.array, zs);
+
     // Mark the geometry as having changed and needing updates.
-    mesh.geometry.verticesNeedUpdate = true;
-    mesh.geometry.normalsNeedUpdate = true;
     mesh.geometry.computeBoundingSphere();
     mesh.geometry.computeFaceNormals();
     mesh.geometry.computeVertexNormals();
@@ -246,19 +226,18 @@ THREE.Terrain.GEOCLIPMAP = 2;
 THREE.Terrain.POLYGONREDUCTION = 3;
 
 /**
- * Get a 2D array of heightmap values from a 1D array of plane vertices.
+ * Get a 2D array of heightmap values from a 1D array of Z-positions.
  *
- * @param {THREE.Vector3[]} vertices
- *   A 1D array containing the vertices of the plane geometry representing the
- *   terrain, where the z-value of the vertices represent the terrain's
- *   heightmap.
+ * @param {Float32Array} vertices
+ *   A 1D array containing the vertex Z-positions of the geometry representing
+ *   the terrain.
  * @param {Object} options
  *   A map of settings defining properties of the terrain. The only properties
  *   that matter here are `xSegments` and `ySegments`, which represent how many
  *   vertices wide and deep the terrain plane is, respectively (and therefore
  *   also the dimensions of the returned array).
  *
- * @return {Number[][]}
+ * @return {Float32Array[]}
  *   A 2D array representing the terrain's heightmap.
  */
 THREE.Terrain.toArray2D = function(vertices, options) {
@@ -267,9 +246,9 @@ THREE.Terrain.toArray2D = function(vertices, options) {
         yl = options.ySegments + 1,
         i, j;
     for (i = 0; i < xl; i++) {
-        tgt[i] = new Float64Array(options.ySegments + 1);
+        tgt[i] = new Float32Array(options.ySegments + 1);
         for (j = 0; j < yl; j++) {
-            tgt[i][j] = vertices[j * xl + i].z;
+            tgt[i][j] = vertices[j * xl + i];
         }
     }
     return tgt;
@@ -278,17 +257,16 @@ THREE.Terrain.toArray2D = function(vertices, options) {
 /**
  * Set the height of plane vertices from a 2D array of heightmap values.
  *
- * @param {THREE.Vector3[]} vertices
- *   A 1D array containing the vertices of the plane geometry representing the
- *   terrain, where the z-value of the vertices represent the terrain's
- *   heightmap.
+ * @param {Float32Array} vertices
+ *   A 1D array containing the vertex Z-positions of the geometry representing
+ *   the terrain.
  * @param {Number[][]} src
  *   A 2D array representing a heightmap to apply to the terrain.
  */
 THREE.Terrain.fromArray2D = function(vertices, src) {
     for (var i = 0, xl = src.length; i < xl; i++) {
         for (var j = 0, yl = src[i].length; j < yl; j++) {
-            vertices[j * xl + i].z = src[i][j];
+            vertices[j * xl + i] = src[i][j];
         }
     }
 };
@@ -296,23 +274,22 @@ THREE.Terrain.fromArray2D = function(vertices, src) {
 /**
  * Get a 1D array of heightmap values from a 1D array of plane vertices.
  *
- * @param {THREE.Vector3[]} vertices
- *   A 1D array containing the vertices of the plane geometry representing the
- *   terrain, where the z-value of the vertices represent the terrain's
- *   heightmap.
+ * @param {Float32Array} vertices
+ *   A 1D array containing the vertex positions of the geometry representing the
+ *   terrain.
  * @param {Object} options
  *   A map of settings defining properties of the terrain. The only properties
  *   that matter here are `xSegments` and `ySegments`, which represent how many
  *   vertices wide and deep the terrain plane is, respectively (and therefore
  *   also the dimensions of the returned array).
  *
- * @return {Number[]}
+ * @return {Float32Array}
  *   A 1D array representing the terrain's heightmap.
  */
 THREE.Terrain.toArray1D = function(vertices) {
-    var tgt = new Float64Array(vertices.length);
+    var tgt = new Float32Array(vertices.length / 3);
     for (var i = 0, l = tgt.length; i < l; i++) {
-        tgt[i] = vertices[i].z;
+        tgt[i] = vertices[i * 3 + 2];
     }
     return tgt;
 };
@@ -320,16 +297,15 @@ THREE.Terrain.toArray1D = function(vertices) {
 /**
  * Set the height of plane vertices from a 1D array of heightmap values.
  *
- * @param {THREE.Vector3[]} vertices
- *   A 1D array containing the vertices of the plane geometry representing the
- *   terrain, where the z-value of the vertices represent the terrain's
- *   heightmap.
+ * @param {Float32Array} vertices
+ *   A 1D array containing the vertex positions of the geometry representing the
+ *   terrain.
  * @param {Number[]} src
  *   A 1D array representing a heightmap to apply to the terrain.
  */
 THREE.Terrain.fromArray1D = function(vertices, src) {
-    for (var i = 0, l = Math.min(vertices.length, src.length); i < l; i++) {
-        vertices[i].z = src[i];
+    for (var i = 0, l = Math.min(vertices.length / 3, src.length); i < l; i++) {
+        vertices[i * 3 + 2] = src[i];
     }
 };
 
@@ -351,22 +327,12 @@ THREE.Terrain.heightmapArray = function(method, options) {
     var arr = new Array((options.xSegments+1) * (options.ySegments+1)),
         l = arr.length,
         i;
-    // The heightmap functions provided by this script operate on THREE.Vector3
-    // objects by changing the z field, so we need to make that available.
-    // Unfortunately that means creating a bunch of objects we're just going to
-    // throw away, but a conscious decision was made here to optimize for the
-    // vector case.
-    for (i = 0; i < l; i++) {
-        arr[i] = {z: 0};
-    }
+    arr.fill(0);
     options.minHeight = options.minHeight || 0;
     options.maxHeight = typeof options.maxHeight === 'undefined' ? 1 : options.maxHeight;
     options.stretch = options.stretch || false;
     method(arr, options);
     THREE.Terrain.Clamp(arr, options);
-    for (i = 0; i < l; i++) {
-        arr[i] = arr[i].z;
-    }
     return arr;
 };
 
diff --git a/src/filters.js b/src/filters.js
index 15a51c1..9413800 100644
--- a/src/filters.js
+++ b/src/filters.js
@@ -1,9 +1,8 @@
 /**
  * Rescale the heightmap of a terrain to keep it within the maximum range.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -17,8 +16,8 @@ THREE.Terrain.Clamp = function(g, options) {
         i;
     options.easing = options.easing || THREE.Terrain.Linear;
     for (i = 0; i < l; i++) {
-        if (g[i].z < min) min = g[i].z;
-        if (g[i].z > max) max = g[i].z;
+        if (g[i] < min) min = g[i];
+        if (g[i] > max) max = g[i];
     }
     var actualRange = max - min,
         optMax = typeof options.maxHeight !== 'number' ? max : options.maxHeight,
@@ -31,7 +30,7 @@ THREE.Terrain.Clamp = function(g, options) {
         range = targetMax - targetMin;
     }
     for (i = 0; i < l; i++) {
-        g[i].z = options.easing((g[i].z - min) / actualRange) * range + optMin;
+        g[i] = options.easing((g[i] - min) / actualRange) * range + optMin;
     }
 };
 
@@ -40,9 +39,8 @@ THREE.Terrain.Clamp = function(g, options) {
  *
  * Useful to make islands or enclosing walls/cliffs.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -84,10 +82,10 @@ THREE.Terrain.Edges = function(g, options, direction, distance, easing, edges) {
             k1 = j*xl + i;
             k2 = (options.ySegments-j)*xl + i;
             if (edges.top) {
-                g[k1].z = max(g[k1].z, (peak - g[k1].z) * multiplier + g[k1].z);
+                g[k1] = max(g[k1], (peak - g[k1]) * multiplier + g[k1]);
             }
             if (edges.bottom) {
-                g[k2].z = max(g[k2].z, (peak - g[k2].z) * multiplier + g[k2].z);
+                g[k2] = max(g[k2], (peak - g[k2]) * multiplier + g[k2]);
             }
         }
     }
@@ -97,10 +95,10 @@ THREE.Terrain.Edges = function(g, options, direction, distance, easing, edges) {
             k1 = i*xl+j;
             k2 = (options.ySegments-i)*xl + (options.xSegments-j);
             if (edges.left) {
-                g[k1].z = max(g[k1].z, (peak - g[k1].z) * multiplier + g[k1].z);
+                g[k1] = max(g[k1], (peak - g[k1]) * multiplier + g[k1]);
             }
             if (edges.right) {
-                g[k2].z = max(g[k2].z, (peak - g[k2].z) * multiplier + g[k2].z);
+                g[k2] = max(g[k2], (peak - g[k2]) * multiplier + g[k2]);
             }
         }
     }
@@ -116,9 +114,8 @@ THREE.Terrain.Edges = function(g, options, direction, distance, easing, edges) {
  *
  * Useful to make islands or enclosing walls/cliffs.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -155,10 +152,10 @@ THREE.Terrain.RadialEdges = function(g, options, direction, distance, easing) {
             vertexDistance = Math.min(edgeRadius, Math.sqrt((xl2-i)*xSegmentSize*(xl2-i)*xSegmentSize + (yl2-j)*ySegmentSize*(yl2-j)*ySegmentSize) - distance);
             if (vertexDistance < 0) continue;
             multiplier = easing(vertexDistance / edgeRadius);
-            g[k].z = max(g[k].z, (peak - g[k].z) * multiplier + g[k].z);
+            g[k] = max(g[k], (peak - g[k]) * multiplier + g[k]);
             // Use symmetry to reduce the number of iterations.
             k = (options.ySegments-j)*xl + i;
-            g[k].z = max(g[k].z, (peak - g[k].z) * multiplier + g[k].z);
+            g[k] = max(g[k], (peak - g[k]) * multiplier + g[k]);
         }
     }
 };
@@ -166,9 +163,8 @@ THREE.Terrain.RadialEdges = function(g, options, direction, distance, easing) {
 /**
  * Smooth the terrain by setting each point to the mean of its neighborhood.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -178,7 +174,7 @@ THREE.Terrain.RadialEdges = function(g, options, direction, distance, easing) {
  *   neighbors.
  */
 THREE.Terrain.Smooth = function(g, options, weight) {
-    var heightmap = new Float64Array(g.length);
+    var heightmap = new Float32Array(g.length);
     for (var i = 0, xl = options.xSegments + 1, yl = options.ySegments + 1; i < xl; i++) {
         for (var j = 0; j < yl; j++) {
             var sum = 0,
@@ -187,7 +183,7 @@ THREE.Terrain.Smooth = function(g, options, weight) {
                 for (var m = -1; m <= 1; m++) {
                     var key = (j+n)*xl + i + m;
                     if (typeof g[key] !== 'undefined' && i+m >= 0 && j+n >= 0 && i+m < xl && j+n < yl) {
-                        sum += g[key].z;
+                        sum += g[key];
                         c++;
                     }
                 }
@@ -198,17 +194,22 @@ THREE.Terrain.Smooth = function(g, options, weight) {
     weight = weight || 0;
     var w = 1 / (1 + weight);
     for (var k = 0, l = g.length; k < l; k++) {
-        g[k].z = (heightmap[k] + g[k].z * weight) * w;
+        g[k] = (heightmap[k] + g[k] * weight) * w;
     }
 };
 
 /**
  * Smooth the terrain by setting each point to the median of its neighborhood.
  *
- * Parameters are the same as those for {@link THREE.Terrain.DiamondSquare}.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
+ * @param {Object} options
+ *   A map of settings that control how the terrain is constructed and
+ *   displayed. Valid values are the same as those for the `options` parameter
+ *   of {@link THREE.Terrain}().
  */
 THREE.Terrain.SmoothMedian = function(g, options) {
-    var heightmap = new Float64Array(g.length),
+    var heightmap = new Float32Array(g.length),
         neighborValues = [],
         neighborKeys = [],
         sortByValue = function(a, b) {
@@ -222,7 +223,7 @@ THREE.Terrain.SmoothMedian = function(g, options) {
                 for (var m = -1; m <= 1; m++) {
                     var key = (j+n)*xl + i + m;
                     if (typeof g[key] !== 'undefined' && i+m >= 0 && j+n >= 0 && i+m < xl && j+n < yl) {
-                        neighborValues.push(g[key].z);
+                        neighborValues.push(g[key]);
                         neighborKeys.push(key);
                     }
                 }
@@ -231,25 +232,24 @@ THREE.Terrain.SmoothMedian = function(g, options) {
             var halfKey = Math.floor(neighborKeys.length*0.5),
                 median;
             if (neighborKeys.length % 2 === 1) {
-                median = g[neighborKeys[halfKey]].z;
+                median = g[neighborKeys[halfKey]];
             }
             else {
-                median = (g[neighborKeys[halfKey-1]].z + g[neighborKeys[halfKey]].z) * 0.5;
+                median = (g[neighborKeys[halfKey-1]] + g[neighborKeys[halfKey]]) * 0.5;
             }
             heightmap[j*xl + i] = median;
         }
     }
     for (var k = 0, l = g.length; k < l; k++) {
-        g[k].z = heightmap[k];
+        g[k] = heightmap[k];
     }
 };
 
 /**
  * Smooth the terrain by clamping each point within its neighbors' extremes.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -261,7 +261,7 @@ THREE.Terrain.SmoothMedian = function(g, options) {
  *   point can be farther outside the range of its neighbors.
  */
 THREE.Terrain.SmoothConservative = function(g, options, multiplier) {
-    var heightmap = new Float64Array(g.length);
+    var heightmap = new Float32Array(g.length);
     for (var i = 0, xl = options.xSegments + 1, yl = options.ySegments + 1; i < xl; i++) {
         for (var j = 0; j < yl; j++) {
             var max = -Infinity,
@@ -270,8 +270,8 @@ THREE.Terrain.SmoothConservative = function(g, options, multiplier) {
                 for (var m = -1; m <= 1; m++) {
                     var key = (j+n)*xl + i + m;
                     if (typeof g[key] !== 'undefined' && n && m && i+m >= 0 && j+n >= 0 && i+m < xl && j+n < yl) {
-                        if (g[key].z < min) min = g[key].z;
-                        if (g[key].z > max) max = g[key].z;
+                        if (g[key] < min) min = g[key];
+                        if (g[key] > max) max = g[key];
                     }
                 }
             }
@@ -282,20 +282,19 @@ THREE.Terrain.SmoothConservative = function(g, options, multiplier) {
                 max = middle + halfdiff * multiplier;
                 min = middle - halfdiff * multiplier;
             }
-            heightmap[kk] = g[kk].z > max ? max : (g[kk].z < min ? min : g[kk].z);
+            heightmap[kk] = g[kk] > max ? max : (g[kk] < min ? min : g[kk]);
         }
     }
     for (var k = 0, l = g.length; k < l; k++) {
-        g[k].z = heightmap[k];
+        g[k] = heightmap[k];
     }
 };
 
 /**
  * Partition a terrain into flat steps.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Number} [levels]
  *   The number of steps to divide the terrain into. Defaults to
  *   (g.length/2)^(1/4).
@@ -312,7 +311,7 @@ THREE.Terrain.Step = function(g, levels) {
         levels = Math.floor(Math.pow(l*0.5, 0.25));
     }
     for (i = 0; i < l; i++) {
-        heights[i] = g[i].z;
+        heights[i] = g[i];
     }
     heights.sort(function(a, b) { return a - b; });
     for (i = 0; i < levels; i++) {
@@ -332,10 +331,10 @@ THREE.Terrain.Step = function(g, levels) {
 
     // Set the height of each vertex to the average height of its bucket
     for (i = 0; i < l; i++) {
-        var startHeight = g[i].z;
+        var startHeight = g[i];
         for (j = 0; j < levels; j++) {
             if (startHeight >= buckets[j].min && startHeight <= buckets[j].max) {
-                g[i].z = buckets[j].avg;
+                g[i] = buckets[j].avg;
                 break;
             }
         }
@@ -345,11 +344,15 @@ THREE.Terrain.Step = function(g, levels) {
 /**
  * Transform to turbulent noise.
  *
- * Parameters are the same as those for {@link THREE.Terrain.DiamondSquare}.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
+ * @param {Object} [options]
+ *   The same map of settings you'd pass to {@link THREE.Terrain()}. Only
+ *   `minHeight` and `maxHeight` are used (and required) here.
  */
 THREE.Terrain.Turbulence = function(g, options) {
     var range = options.maxHeight - options.minHeight;
     for (var i = 0, l = g.length; i < l; i++) {
-        g[i].z = options.minHeight + Math.abs((g[i].z - options.minHeight) * 2 - range);
+        g[i] = options.minHeight + Math.abs((g[i] - options.minHeight) * 2 - range);
     }
 };
diff --git a/src/generators.js b/src/generators.js
index ab14df8..249156c 100644
--- a/src/generators.js
+++ b/src/generators.js
@@ -1,9 +1,8 @@
 /**
  * A utility for generating heightmap functions by additive composition.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} [options]
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -42,9 +41,8 @@ THREE.Terrain.MultiPass = function(g, options, passes) {
 /**
  * Generate random terrain using a curve.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -62,7 +60,7 @@ THREE.Terrain.Curve = function(g, options, curve) {
         scalar = options.frequency / (Math.min(options.xSegments, options.ySegments) + 1);
     for (var i = 0, xl = options.xSegments + 1, yl = options.ySegments + 1; i < xl; i++) {
         for (var j = 0; j < yl; j++) {
-            g[j * xl + i].z += curve(i * scalar, j * scalar) * range;
+            g[j * xl + i] += curve(i * scalar, j * scalar) * range;
         }
     }
 };
@@ -78,7 +76,7 @@ THREE.Terrain.Cosine = function(g, options) {
         phase = Math.random() * Math.PI * 2;
     for (var i = 0, xl = options.xSegments + 1; i < xl; i++) {
         for (var j = 0, yl = options.ySegments + 1; j < yl; j++) {
-            g[j * xl + i].z += amplitude * (Math.cos(i * frequencyScalar + phase) + Math.cos(j * frequencyScalar + phase));
+            g[j * xl + i] += amplitude * (Math.cos(i * frequencyScalar + phase) + Math.cos(j * frequencyScalar + phase));
         }
     }
 };
@@ -102,9 +100,8 @@ THREE.Terrain.CosineLayers = function(g, options) {
  *
  * Based on https://github.com/srchea/Terrain-Generation/blob/master/js/classes/TerrainGeneration.js
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -170,7 +167,7 @@ THREE.Terrain.DiamondSquare = function(g, options) {
     // Apply heightmap
     for (i = 0; i < xl; i++) {
         for (j = 0; j < yl; j++) {
-            g[j * xl + i].z += heightmap[i][j];
+            g[j * xl + i] += heightmap[i][j];
         }
     }
 
@@ -201,13 +198,13 @@ THREE.Terrain.Fault = function(g, options) {
             for (var j = 0, yl = options.ySegments + 1; j < yl; j++) {
                 var distance = a*i + b*j - c;
                 if (distance > smoothDistance) {
-                    g[j * xl + i].z += displacement;
+                    g[j * xl + i] += displacement;
                 }
                 else if (distance < -smoothDistance) {
-                    g[j * xl + i].z -= displacement;
+                    g[j * xl + i] -= displacement;
                 }
                 else {
-                    g[j * xl + i].z += Math.cos(distance / smoothDistance * Math.PI * 2) * displacement;
+                    g[j * xl + i] += Math.cos(distance / smoothDistance * Math.PI * 2) * displacement;
                 }
             }
         }
@@ -222,9 +219,8 @@ THREE.Terrain.Fault = function(g, options) {
  * terrain and raise a small hill around those points. Those small hills
  * eventually accumulate into large hills with distinct features.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -285,9 +281,8 @@ THREE.Terrain.Hill = function(g, options, feature, shape) {
  * of the points to place small hills are not uniformly randomly distributed
  * but instead are more likely to occur close to the center of the terrain.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -335,18 +330,18 @@ THREE.Terrain.HillIsland = (function() {
             var neighborKey = j * xl + i;
             // If the neighbor is lower, move the particle to that neighbor and re-evaluate.
             if (typeof g[neighborKey] !== 'undefined') {
-                if (g[neighborKey].z < g[currentKey].z) {
+                if (g[neighborKey] < g[currentKey]) {
                     deposit(g, i, j, xl, displacement);
                     return;
                 }
             }
             // Deposit some particles on the edge.
             else if (Math.random() < 0.2) {
-                g[currentKey].z += displacement;
+                g[currentKey] += displacement;
                 return;
             }
         }
-        g[currentKey].z += displacement;
+        g[currentKey] += displacement;
     }
 
     /**
@@ -399,7 +394,7 @@ THREE.Terrain.Perlin = function(g, options) {
         divisor = (Math.min(options.xSegments, options.ySegments) + 1) / options.frequency;
     for (var i = 0, xl = options.xSegments + 1; i < xl; i++) {
         for (var j = 0, yl = options.ySegments + 1; j < yl; j++) {
-            g[j * xl + i].z += noise.perlin(i / divisor, j / divisor) * range;
+            g[j * xl + i] += noise.perlin(i / divisor, j / divisor) * range;
         }
     }
 };
@@ -445,7 +440,7 @@ THREE.Terrain.Simplex = function(g, options) {
         divisor = (Math.min(options.xSegments, options.ySegments) + 1) * 2 / options.frequency;
     for (var i = 0, xl = options.xSegments + 1; i < xl; i++) {
         for (var j = 0, yl = options.ySegments + 1; j < yl; j++) {
-            g[j * xl + i].z += noise.simplex(i / divisor, j / divisor) * range;
+            g[j * xl + i] += noise.simplex(i / divisor, j / divisor) * range;
         }
     }
 };
@@ -525,7 +520,7 @@ THREE.Terrain.SimplexLayers = function(g, options) {
                 // http://stackoverflow.com/q/23708306/843621
                 var kg = j * xl + i,
                     kd = j * segments + i;
-                g[kg].z += data[kd];
+                g[kg] += data[kd];
             }
         }
     }
@@ -594,7 +589,7 @@ THREE.Terrain.Weierstrass = function(g, options) {
                 var y = Math.pow(1+r21, -k) * Math.sin(Math.pow(1+r22, k) * (j + 0.25*Math.cos(i) + r24*i) * r23);
                 sum -= Math.exp(dir1*x*x + dir2*y*y);
             }
-            g[j * xl + i].z += sum * range;
+            g[j * xl + i] += sum * range;
         }
     }
     THREE.Terrain.Clamp(g, options);
diff --git a/src/images.js b/src/images.js
index 409a387..e813744 100644
--- a/src/images.js
+++ b/src/images.js
@@ -1,9 +1,8 @@
 /**
  * Convert an image-based heightmap into vertex-based height data.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -23,7 +22,7 @@ THREE.Terrain.fromHeightmap = function(g, options) {
         for (var col = 0; col < cols; col++) {
             var i = row * cols + col,
                 idx = i * 4;
-            g[i].z = (data[idx] + data[idx+1] + data[idx+2]) / 765 * spread + options.minHeight;
+            g[i] = (data[idx] + data[idx+1] + data[idx+2]) / 765 * spread + options.minHeight;
         }
     }
 };
@@ -35,10 +34,12 @@ THREE.Terrain.fromHeightmap = function(g, options) {
  * that if `options.heightmap` is a canvas element then the image will be
  * painted onto that canvas; otherwise a new canvas will be created.
  *
- * NOTE: this method performs an operation on an array of vertices, which
- * aren't available when using `BufferGeometry`. So, if you want to use this
- * method, make sure to set the `useBufferGeometry` option to `false` when
- * generating your terrain.
+ * @param {Float32Array} g
+ *   The vertex position array for the geometry to paint to a heightmap.
+ * @param {Object} options
+ *   A map of settings that control how the terrain is constructed and
+ *   displayed. Valid values are the same as those for the `options` parameter
+ *   of {@link THREE.Terrain}().
  *
  * @return {HTMLCanvasElement}
  *   A canvas with the relevant heightmap painted on it.
@@ -51,9 +52,9 @@ THREE.Terrain.toHeightmap = function(g, options) {
     if (!hasMax || !hasMin) {
         var max2 = max,
             min2 = min;
-        for (var k = 0, l = g.length; k < l; k++) {
-            if (g[k].z > max2) max2 = g[k].z;
-            if (g[k].z < min2) min2 = g[k].z;
+        for (var k = 2, l = g.length; k < l; k += 3) {
+            if (g[k] > max2) max2 = g[k];
+            if (g[k] < min2) min2 = g[k];
         }
         if (!hasMax) max = max2;
         if (!hasMin) min = min2;
@@ -71,7 +72,7 @@ THREE.Terrain.toHeightmap = function(g, options) {
         for (var col = 0; col < cols; col++) {
             var i = row * cols + col,
             idx = i * 4;
-            data[idx] = data[idx+1] = data[idx+2] = Math.round(((g[i].z - min) / spread) * 255);
+            data[idx] = data[idx+1] = data[idx+2] = Math.round(((g[i * 3 + 2] - min) / spread) * 255);
             data[idx+3] = 255;
         }
     }
diff --git a/src/influences.js b/src/influences.js
index 9553a1e..ca73d31 100644
--- a/src/influences.js
+++ b/src/influences.js
@@ -1,7 +1,6 @@
 // Allows placing geometrically-described features on a terrain.
-// If you want these features to look a little less regular,
-// just apply them before a procedural pass.
-// If you want more complex influence, you can just composite heightmaps.
+// If you want these features to look a little less regular, apply them before a procedural pass.
+// If you want more complex influence, you can composite heightmaps.
 
 /**
  * Equations describing geographic features.
@@ -121,12 +120,12 @@ THREE.Terrain.Influence = function(g, options, f, x, y, r, h, t, e) {
                 // interpolate using e, then blend according to t.
                 d = f(fdr, fdxr, fdyr) * h * (1 - e(fdr, fdxr, fdyr));
             if (fd > r || typeof g[k] == 'undefined') continue;
-            if      (t === THREE.AdditiveBlending)    g[k].z += d; // jscs:ignore requireSpaceAfterKeywords
-            else if (t === THREE.SubtractiveBlending) g[k].z -= d;
-            else if (t === THREE.MultiplyBlending)    g[k].z *= d;
-            else if (t === THREE.NoBlending)          g[k].z  = d;
-            else if (t === THREE.NormalBlending)      g[k].z  = e(fdr, fdxr, fdyr) * g[k].z + d;
-            else if (typeof t === 'function')         g[k].z  = t(g[k].z, d, fdr, fdxr, fdyr);
+            if      (t === THREE.AdditiveBlending)    g[k] += d; // jscs:ignore requireSpaceAfterKeywords
+            else if (t === THREE.SubtractiveBlending) g[k] -= d;
+            else if (t === THREE.MultiplyBlending)    g[k] *= d;
+            else if (t === THREE.NoBlending)          g[k]  = d;
+            else if (t === THREE.NormalBlending)      g[k]  = e(fdr, fdxr, fdyr) * g[k] + d;
+            else if (typeof t === 'function')         g[k]  = t(g[k].z, d, fdr, fdxr, fdyr);
         }
     }
 };
diff --git a/src/scatter.js b/src/scatter.js
index d58299b..931d739 100644
--- a/src/scatter.js
+++ b/src/scatter.js
@@ -1,7 +1,7 @@
 /**
  * Scatter a mesh across the terrain.
  *
- * @param {THREE.Geometry} geometry
+ * @param {THREE.BufferGeometry} geometry
  *   The terrain's geometry (or the highest-resolution version of it).
  * @param {Object} options
  *   A map of settings that controls how the meshes are scattered, with the
@@ -52,10 +52,6 @@ THREE.Terrain.ScatterMeshes = function(geometry, options) {
         console.error('options.mesh is required for THREE.Terrain.ScatterMeshes but was not passed');
         return;
     }
-    if (geometry instanceof THREE.BufferGeometry) {
-        console.warn('The terrain mesh is using BufferGeometry but THREE.Terrain.ScatterMeshes can only work with Geometry.');
-        return;
-    }
     if (!options.scene) {
         options.scene = new THREE.Object3D();
     }
@@ -80,86 +76,68 @@ THREE.Terrain.ScatterMeshes = function(geometry, options) {
         randomness,
         spreadRange = 1 / options.smoothSpread,
         doubleSizeVariance = options.sizeVariance * 2,
-        v = geometry.vertices,
-        meshes = [],
+        vertex1 = new THREE.Vector3(),
+        vertex2 = new THREE.Vector3(),
+        vertex3 = new THREE.Vector3(),
+        faceNormal = new THREE.Vector3(),
         up = options.mesh.up.clone().applyAxisAngle(new THREE.Vector3(1, 0, 0), 0.5*Math.PI);
     if (spreadIsNumber) {
         randomHeightmap = options.randomness();
         randomness = typeof randomHeightmap === 'number' ? Math.random : function(k) { return randomHeightmap[k]; };
     }
-    // geometry.computeFaceNormals();
-    for (var i = 0, w = options.w*2; i < w; i++) {
-        for (var j = 0, h = options.h; j < h; j++) {
-            var key = j*w + i,
-                f = geometry.faces[key],
-                place = false;
-            if (spreadIsNumber) {
-                var rv = randomness(key);
-                if (rv < options.spread) {
-                    place = true;
-                }
-                else if (rv < options.spread + options.smoothSpread) {
-                    // Interpolate rv between spread and spread + smoothSpread,
-                    // then multiply that "easing" value by the probability
-                    // that a mesh would get placed on a given face.
-                    place = THREE.Terrain.EaseInOut((rv - options.spread) * spreadRange) * options.spread > Math.random();
-                }
+
+    geometry = geometry.toNonIndexed();
+    var gArray = geometry.attributes.position.array;
+    for (var i = 0; i < geometry.attributes.position.array.length; i += 9) {
+        vertex1.set(gArray[i + 0], gArray[i + 1], gArray[i + 2]);
+        vertex2.set(gArray[i + 3], gArray[i + 4], gArray[i + 5]);
+        vertex3.set(gArray[i + 6], gArray[i + 7], gArray[i + 8]);
+        THREE.Triangle.getNormal(vertex1, vertex2, vertex3, faceNormal);
+
+        var place = false;
+        if (spreadIsNumber) {
+            var rv = randomness(key);
+            if (rv < options.spread) {
+                place = true;
             }
-            else {
-                place = options.spread(v[f.a], key, f, i, j);
+            else if (rv < options.spread + options.smoothSpread) {
+                // Interpolate rv between spread and spread + smoothSpread,
+                // then multiply that "easing" value by the probability
+                // that a mesh would get placed on a given face.
+                place = THREE.Terrain.EaseInOut((rv - options.spread) * spreadRange) * options.spread > Math.random();
             }
-            if (place) {
-                // Don't place a mesh if the angle is too steep.
-                if (f.normal.angleTo(up) > options.maxSlope) {
-                    continue;
-                }
-                var mesh = options.mesh.clone();
-                // mesh.geometry.computeBoundingBox();
-                mesh.position.copy(v[f.a]).add(v[f.b]).add(v[f.c]).divideScalar(3);
-                // mesh.translateZ((mesh.geometry.boundingBox.max.z - mesh.geometry.boundingBox.min.z) * 0.5);
-                if (options.maxTilt > 0) {
-                    var normal = mesh.position.clone().add(f.normal);
-                    mesh.lookAt(normal);
-                    var tiltAngle = f.normal.angleTo(up);
-                    if (tiltAngle > options.maxTilt) {
-                        var ratio = options.maxTilt / tiltAngle;
-                        mesh.rotation.x *= ratio;
-                        mesh.rotation.y *= ratio;
-                        mesh.rotation.z *= ratio;
-                    }
-                }
-                mesh.rotation.x += 90 / 180 * Math.PI;
-                mesh.rotateY(Math.random() * 2 * Math.PI);
-                if (options.sizeVariance) {
-                    var variance = Math.random() * doubleSizeVariance - options.sizeVariance;
-                    mesh.scale.x = mesh.scale.z = 1 + variance;
-                    mesh.scale.y += variance;
+        }
+        else {
+            place = options.spread(vertex1, i / 9, faceNormal, i);
+        }
+        if (place) {
+            // Don't place a mesh if the angle is too steep.
+            if (faceNormal.angleTo(up) > options.maxSlope) {
+                continue;
+            }
+            var mesh = options.mesh.clone();
+            mesh.position.addVectors(vertex1, vertex2).add(vertex3).divideScalar(3);
+            if (options.maxTilt > 0) {
+                var normal = mesh.position.clone().add(faceNormal);
+                mesh.lookAt(normal);
+                var tiltAngle = faceNormal.angleTo(up);
+                if (tiltAngle > options.maxTilt) {
+                    var ratio = options.maxTilt / tiltAngle;
+                    mesh.rotation.x *= ratio;
+                    mesh.rotation.y *= ratio;
+                    mesh.rotation.z *= ratio;
                 }
-                meshes.push(mesh);
             }
-        }
-    }
+            mesh.rotation.x += 90 / 180 * Math.PI;
+            mesh.rotateY(Math.random() * 2 * Math.PI);
+            if (options.sizeVariance) {
+                var variance = Math.random() * doubleSizeVariance - options.sizeVariance;
+                mesh.scale.x = mesh.scale.z = 1 + variance;
+                mesh.scale.y += variance;
+            }
 
-    // Merge geometries.
-    var k, l;
-    if (options.mesh.geometry instanceof THREE.Geometry) {
-        var g = new THREE.Geometry();
-        for (k = 0, l = meshes.length; k < l; k++) {
-            var m = meshes[k];
-            m.updateMatrix();
-            g.merge(m.geometry, m.matrix);
-        }
-        /*
-        if (!(options.mesh.material instanceof THREE.MeshFaceMaterial)) {
-            g = THREE.BufferGeometryUtils.fromGeometry(g);
-        }
-        */
-        options.scene.add(new THREE.Mesh(g, options.mesh.material));
-    }
-    // There's no BufferGeometry merge method implemented yet.
-    else {
-        for (k = 0, l = meshes.length; k < l; k++) {
-            options.scene.add(meshes[k]);
+            mesh.updateMatrix();
+            options.scene.add(mesh);
         }
     }
 
diff --git a/src/weightedBoxBlurGaussian.js b/src/weightedBoxBlurGaussian.js
index 1bb6bde..d29f71a 100644
--- a/src/weightedBoxBlurGaussian.js
+++ b/src/weightedBoxBlurGaussian.js
@@ -4,9 +4,8 @@
 /**
  * Perform Gaussian smoothing on terrain vertices.
  *
- * @param {THREE.Vector3[]} g
- *   The vertex array for plane geometry to modify with heightmap data. This
- *   method sets the `z` property of each vertex.
+ * @param {Float32Array} g
+ *   The geometry's z-positions to modify with heightmap data.
  * @param {Object} options
  *   A map of settings that control how the terrain is constructed and
  *   displayed. Valid values are the same as those for the `options` parameter
@@ -19,13 +18,13 @@
  *   in slower but more accurate smoothing.
  */
 THREE.Terrain.GaussianBoxBlur = function(g, options, s, n) {
-    THREE.Terrain.fromArray1D(g, gaussianBoxBlur(
-        THREE.Terrain.toArray1D(g, options),
+    gaussianBoxBlur(
+        g,
         options.xSegments+1,
         options.ySegments+1,
         s,
         n
-    ));
+    );
 };
 
 /**
@@ -62,7 +61,7 @@ THREE.Terrain.GaussianBoxBlur = function(g, options, s, n) {
 function gaussianBoxBlur(scl, w, h, r, n, tcl) {
     if (typeof r === 'undefined') r = 1;
     if (typeof n === 'undefined') n = 3;
-    if (typeof tcl === 'undefined') tcl = new Float64Array(scl.length);
+    if (typeof tcl === 'undefined') tcl = new Float32Array(scl.length);
     var boxes = boxesForGauss(r, n);
     for (var i = 0; i < n; i++) {
         boxBlur(scl, tcl, w, h, (boxes[i]-1)/2);
diff --git a/src/worley.js b/src/worley.js
index e580f64..56927b6 100644
--- a/src/worley.js
+++ b/src/worley.js
@@ -49,9 +49,8 @@
      * scattered point (or the nth-closest point, but this results in
      * heightmaps that don't look much like terrain).
      *
-     * @param {THREE.Vector3[]} g
-     *   The vertex array for plane geometry to modify with heightmap data.
-     *   This method sets the `z` property of each vertex.
+     * @param {Float32Array} g
+     *   The geometry's z-positions to modify with heightmap data.
      * @param {Object} options
      *   A map of settings that control how the terrain is constructed and
      *   displayed. Valid values are the same as those for the `options`
@@ -88,7 +87,7 @@
             for (var j = 0; j < options.ySegments + 1; j++) {
                 currentCoords.x = i;
                 currentCoords.y = j;
-                g[j*xl+i].z = transform(distanceToNearest(currentCoords, points, options.distanceType || ''));
+                g[j*xl+i] = transform(distanceToNearest(currentCoords, points, options.distanceType || ''));
             }
         }
         // We set the heights to distances so now we need to normalize
diff --git a/statistics/scripts/index.js b/statistics/scripts/index.js
index 69cd89b..6499ba7 100644
--- a/statistics/scripts/index.js
+++ b/statistics/scripts/index.js
@@ -232,7 +232,6 @@ function assembleOptions(heightmap, easing, smoothing, turbulent) {
     steps: 1,
     stretch: true,
     turbulent: turbulent || false,
-    useBufferGeometry: false,
     xSize: 1024,
     ySize: 1024,
     xSegments: 63,