diff --git a/basics/math/data/noise_image.png b/basics/math/data/noise_image.png
new file mode 100644
index 0000000..83ce0b1
Binary files /dev/null and b/basics/math/data/noise_image.png differ
diff --git a/basics/math/noise4_tap.rb b/basics/math/noise4_tap.rb
index cf8ca3d..6e2a998 100644
--- a/basics/math/noise4_tap.rb
+++ b/basics/math/noise4_tap.rb
@@ -4,7 +4,7 @@
 Coord = Struct.new(:mx, :my, :mz, :az, :al)
 
 class ForD < Processing::App
-  attr_reader :half_w, :half_h, :radius, :spin_x, :spin, :coords
+  attr_reader :half_w, :half_h, :radius, :spin_x, :spin, :coords, :smth
 
   def settings
     size(480, 480, P3D)
@@ -20,7 +20,7 @@ def setup
     @radius = height * 0.4
     @spin_x = 0.0
     @spin = 0.0
-
+    @smth = false
     angle = ((1.0 + Math.sqrt(5)) / 2.0 - 1) * TWO_PI # Fibonacci distribution
     @coords = (0..2_000).map do |i|
       inc = Math.asin(i / 1_000.0 - 1.0) # inclination
@@ -31,9 +31,9 @@ def setup
         rotate_y(az)
         rotate_z(inc)
         translate(radius, 0, 0)
-        coord.mx = model_x(0, 0, 0) * 0.007
-        coord.my = model_y(0, 0, 0) * 0.007
-        coord.mz = modelZ(0, 0, 0) * 0.007
+        coord.mx = g.model_x(0, 0, 0) * 0.007
+        coord.my = g.model_y(0, 0, 0) * 0.007
+        coord.mz = g.model_z(0, 0, 0) * 0.007
         coord.az = az
         coord.al = inc
         pop_matrix
@@ -54,10 +54,14 @@ def draw
       rotate_y(ci.az)
       rotate_z(ci.al)
       translate(radius, 0, 0)
-      dst = (modelZ(0, 0, 0) + half_h) / 2 + 32
+      dst = (g.model_z(0, 0, 0) + half_h) / 2 + 32
       stroke(dst, dst * 0.5, dst * 0.25)
       #  4D Simplex noise(x, y, z, time)
-      ang = noise(ci.mx, ci.my, ci.mz, frame_count * 0.007) * TWO_PI
+      if smth
+        ang = SmoothNoise.noise(ci.mx, ci.my, ci.mz, frame_count * 0.007) * TWO_PI
+      else
+        ang = noise(ci.mx, ci.my, ci.mz, frame_count * 0.007) * TWO_PI
+      end
       rotate_x(ang)
       line(0, 0, 0, 0, 15, 0)
       translate(0, 15, 0)
@@ -71,15 +75,7 @@ def draw
   end
 
   def mouse_pressed
-    mode = NoiseMode::OPEN_SMOOTH
-    sketch_title mode.description
-    noise_mode mode
-  end
-
-  def mouse_released
-    mode = NoiseMode::DEFAULT
-    sketch_title mode.description
-    noise_mode mode
+    @smth = !smth
   end
 end
 
diff --git a/basics/math/noise_1_d.rb b/basics/math/noise_1_d.rb
index 829dbfd..87cf286 100644
--- a/basics/math/noise_1_d.rb
+++ b/basics/math/noise_1_d.rb
@@ -2,6 +2,7 @@
 require 'picrate'
 
 class Noise1D < Processing::App
+  attr_reader :smth
 
   def setup
     sketch_title 'Noise 1D'
@@ -9,27 +10,20 @@ def setup
     @x_increment = 0.01
     background 0
     no_stroke
+    @smth = false
   end
 
   def draw
     fill 0, 10
     rect 0, 0, width, height
-    n = noise(@xoff) * width
+    n = smth ? SmoothNoise.noise(@xoff) * width : noise(@xoff) * width
     @xoff += @x_increment
     fill 200
     ellipse n, height / 2, 64, 64
   end
 
   def mouse_pressed
-    mode = NoiseMode::OPEN_SMOOTH
-    sketch_title mode.description
-    noise_mode mode
-  end
-
-  def mouse_released
-    mode = NoiseMode::DEFAULT
-    sketch_title mode.description
-    noise_mode mode
+    @smth = !smth
   end
 
   def settings
diff --git a/basics/math/noise_2_d.rb b/basics/math/noise_2_d.rb
index 8f401c1..69823b0 100644
--- a/basics/math/noise_2_d.rb
+++ b/basics/math/noise_2_d.rb
@@ -1,43 +1,35 @@
 # frozen_string_literal: true
 require 'picrate'
 
+# Noise2D
+# by Daniel Shiffman.
+#
+# Using 2D noise to create simple texture.
 class Noise2D < Processing::App
-  # Noise2D
-  # by Daniel Shiffman.
-  #
-  # Using 2D noise to create simple texture.
+  attr_reader :smth
 
   def setup
     sketch_title 'Noise 2D'
-    @increment = 0.02
+    @inc = 0.02
+    @smth = false
   end
 
   def draw
     background 0
     load_pixels
-    xoff = 0.0
-    (0...width).each do |x|
-      xoff += @increment
-      yoff = 0.0
-      (0...height).each do |y|
-        yoff += @increment
-        bright = noise(xoff, yoff) * 255
-        pixels[x + y * width] = color(bright)
+    grid(width, height) do |x, y|
+      if smth
+        bright = (SmoothNoise.noise(x * @inc, y * @inc) + 1) * 128
+      else
+        bright = (noise(x * @inc, y * @inc) + 1) * 128
       end
+      pixels[x + y * width] = color(bright)
     end
     update_pixels
   end
 
   def mouse_pressed
-    mode = NoiseMode::OPEN_SMOOTH
-    sketch_title mode.description
-    noise_mode mode
-  end
-
-  def mouse_released
-    mode = NoiseMode::DEFAULT
-    sketch_title mode.description
-    noise_mode mode
+    @smth = !smth
   end
 
   def settings
diff --git a/basics/math/noise_3_d.rb b/basics/math/noise_3_d.rb
index fa781dc..a23c4a8 100644
--- a/basics/math/noise_3_d.rb
+++ b/basics/math/noise_3_d.rb
@@ -5,12 +5,12 @@
 # Using 3D noise to create simple animated texture.
 # Here, the third dimension ('z') is treated as time.
 class Noise3D < Processing::App
-  attr_reader :increment, :z_increment
+  attr_reader :bright, :inc, :z_increment, :smth
 
   def setup
     sketch_title 'Noise 3D'
     frame_rate 30
-    @increment = 0.01
+    @inc = 0.01
     @zoff = 0.0
     @z_increment = 0.02
   end
@@ -18,30 +18,20 @@ def setup
   def draw
     background 0
     load_pixels
-    xoff = 0.0
-    (0...width).each do |x|
-      xoff += increment
-      yoff = 0.0
-      (0...height).each do |y|
-        yoff += increment
-        bright = noise(xoff, yoff, @zoff) * 255
-        pixels[x + y * width] = color(bright, bright, bright)
+    grid(width, height) do |x, y|
+      if smth
+        @bright = (SmoothNoise.noise(x * inc, y * inc, @zoff) + 1) * 128
+      else
+        @bright = (noise(x * inc, y * inc, @zoff) + 1) * 128
       end
+      pixels[x + y * width] = color(bright, bright, bright)
     end
     update_pixels
     @zoff += z_increment
   end
 
   def mouse_pressed
-    mode = NoiseMode::OPEN_SMOOTH
-    sketch_title mode.description
-    noise_mode mode
-  end
-
-  def mouse_released
-    mode = NoiseMode::DEFAULT
-    sketch_title mode.description
-    noise_mode mode
+    @smth = !smth
   end
 
   def settings
diff --git a/basics/math/noise_animation.rb b/basics/math/noise_animation.rb
index b1ec59d..f5fd66b 100644
--- a/basics/math/noise_animation.rb
+++ b/basics/math/noise_animation.rb
@@ -45,11 +45,9 @@ def draw
       point(pos.x, pos.y)
     end
     # puts frame_count
-    save_frame(data_path('fr###.tiff'))
-
+    # save_frame(data_path('fr###.tiff'))
     return unless frame_count == FRAMES
 
-    # save_frame(data_path('expt6.png'))
     no_loop
     puts 'finished'
   end
diff --git a/basics/math/noise_image.rb b/basics/math/noise_image.rb
index edca33b..fdddaa5 100644
--- a/basics/math/noise_image.rb
+++ b/basics/math/noise_image.rb
@@ -1,6 +1,7 @@
 require 'picrate'
 # OpenSimplex2 has a range -1.0 to 1.0
 class NoiseImage < Processing::App
+  attr_reader :col, :smth
   SCALE = 0.02
 
   def setup
@@ -8,6 +9,7 @@ def setup
     background(0)
     stroke(255)
     no_fill
+    @smth = false
   end
 
   def draw
@@ -15,7 +17,11 @@ def draw
     scale = 0.02
     load_pixels
     grid(500, 500) do |x, y|
-      col = noise(SCALE * x, SCALE * y) > 0 ? 255 : 0
+      if smth
+        @col = SmoothNoise.noise(SCALE * x, SCALE * y) > 0 ? 255 : 0
+      else
+        @col = noise(SCALE * x, SCALE * y) > 0 ? 255 : 0
+      end
       pixels[x + width * y] = color(col, 0, 0)
     end
     update_pixels
@@ -25,6 +31,10 @@ def draw
   def settings
     size 500, 500
   end
+
+  def mouse_pressed
+    @smth = !smth
+  end
 end
 
 NoiseImage.new
diff --git a/basics/math/noise_wave.rb b/basics/math/noise_wave.rb
index 82759b7..2b358b8 100644
--- a/basics/math/noise_wave.rb
+++ b/basics/math/noise_wave.rb
@@ -3,14 +3,16 @@
 # Noise Wave
 # by Daniel Shiffman.
 #
-# Using Perlin Noise to generate a wave-like pattern.
+# Using Simplex Noise to generate a wave-like pattern.
 class NoiseWave < Processing::App
 
-  attr_reader :yoff         # 2nd dimension of perlin noise
+  attr_reader :y, :yoff, :inc, :smth # 2nd dimension of perlin noise
 
   def setup
     sketch_title 'Noise Wave'
     @yoff = 0.0
+    @smth = false
+    @inc = 0.005
   end
 
   def draw
@@ -18,17 +20,19 @@ def draw
     fill(255)
     # We are going to draw a polygon out of the wave points
     begin_shape
-    xoff = 0       # Option #1: 2D Noise
     # xoff = yoff # Option #2: 1D Noise
     # Iterate over horizontal pixels
     (0..width).step(10) do |x|
       # Calculate a y value according to noise, map to
-      y = map1d(noise(xoff, yoff), (0..1.0), (200..300)) # Option #1: 2D Noise
-      # y = map1d(noise(xoff), (0..1.0), (200..300))    # Option #2: 1D Noise
+      if smth
+        @y = map1d(SmoothNoise.noise(x * inc, yoff), (-1.0..1.0), (200..300)) # Option #1: 2D Noise
+      else
+        @y = map1d(noise(x * inc, yoff), (-1.0..1.0), (200..300)) # Option #1: 2D Noise
+      end
+      # y = map1d(noise(xoff), (-1.0..1.0), (200..300))    # Option #2: 1D Noise
       # Set the vertex
       vertex(x, y)
       # Increment x dimension for noise
-      xoff += 0.05
     end
     # increment y dimension for noise
     @yoff += 0.01
@@ -37,17 +41,8 @@ def draw
     end_shape(CLOSE)
   end
 
-
   def mouse_pressed
-    mode = NoiseMode::OPEN_SMOOTH
-    sketch_title mode.description
-    noise_mode mode
-  end
-
-  def mouse_released
-    mode = NoiseMode::DEFAULT
-    sketch_title mode.description
-    noise_mode mode
+    @smth = !smth
   end
 
   def settings
diff --git a/contributed/decagon_grid.rb b/contributed/decagon_grid.rb
index b9b35ad..29b7bda 100644
--- a/contributed/decagon_grid.rb
+++ b/contributed/decagon_grid.rb
@@ -1,11 +1,11 @@
 #!/usr/bin/env jruby
-
 require 'picrate'
 # Example of a grid of decagons with perlin noise after Lenny Herzog
 class DecagonGrid < Processing::App
+  load_library :pdf
   NOISE_STRENGTH = 80.0
   THETA = 36
-  attr_reader :version, :noise_generator
+  attr_reader :version, :save, :noise_generator
 
   def setup
     sketch_title 'Decagon Grid'
@@ -13,7 +13,7 @@ def setup
     @version = 0
     @save = false
     @noise_generator = lambda do |x, y, seed|
-      NOISE_STRENGTH * noise(
+      NOISE_STRENGTH * SmoothNoise.tnoise(
         x / 150.0,
         y / 150.0 + seed * 2,
         seed
@@ -22,6 +22,7 @@ def setup
   end
 
   def draw
+    begin_record(PDF, data_path("Line_#{version}.pdf")) if save
     background(255)
     no_fill
     stroke(0)
@@ -38,14 +39,15 @@ def draw
       end
       end_shape(CLOSE)
     end
-  end
+    return unless save
 
-  def mouse_pressed
-    noise_mode NoiseMode::OPEN_SMOOTH
+    end_record
+    @version += 1
+    @save = false
   end
 
   def mouse_pressed
-    noise_mode NoiseMode::DEFAULT
+    @save = true
   end
 
   def settings
diff --git a/contributed/etienne.rb b/contributed/etienne.rb
new file mode 100755
index 0000000..a71b57c
--- /dev/null
+++ b/contributed/etienne.rb
@@ -0,0 +1,48 @@
+#!/usr/bin/env jruby
+require 'picrate'
+
+# After a sSketch by Etienne Jacob
+class Etienne < Processing::App
+  NUM_FRAMES = 38
+
+  def setup
+    sketch_title 'Etienne Sketch'
+  end
+
+  def periodic_function(p, seed, x, y)
+    radius = 1.3
+    scl = 0.018
+    1.0 * noise(seed + radius * cos(TWO_PI * p), radius * sin(TWO_PI * p), scl * x, scl * y)
+  end
+
+  def offset(x, y)
+    0.015 * dist(x, y, width / 2, height / 2)
+  end
+
+  def draw
+    background(0)
+    t = 1.0 * frameCount / NUM_FRAMES
+    m = 450
+    stroke(255, 50)
+    stroke_weight(1.5)
+    grid(m, m) do |i, j|
+      margin = 50
+      x = map1d(i, 0..m - 1, margin..width - margin)
+      y = map1d(j, 0..m - 1, margin..height - margin)
+      dx = 20.0 * periodic_function(t - offset(x, y), 0, x, y)
+      dy = 20.0 * periodic_function(t - offset(x, y), 123, x, y)
+      point(x + dx, y + dy)
+    end
+    # save_frame('fr###.gif') if frameCount <= NUM_FRAMES
+    return unless frame_count == NUM_FRAMES
+
+    # puts('All frames have been saved')
+    stop
+  end
+
+  def settings
+    size 500, 500
+  end
+end
+
+Etienne.new
diff --git a/data/henon_2.0000.jpg.tif b/data/henon_2.0000.jpg.tif
deleted file mode 100644
index 90c1a70..0000000
Binary files a/data/henon_2.0000.jpg.tif and /dev/null differ
diff --git a/data/wovns.png b/data/wovns.png
deleted file mode 100644
index 88fced4..0000000
Binary files a/data/wovns.png and /dev/null differ
diff --git a/demo/terreno.rb b/demo/terreno.rb
index a3a7ab8..6ae86e4 100644
--- a/demo/terreno.rb
+++ b/demo/terreno.rb
@@ -1,3 +1,4 @@
+#!/usr/bin/env jruby
 require 'picrate'
 
 #Terreno
@@ -27,7 +28,7 @@ def draw
     for y in 0..@filas
       xoff = 0
       for x in 0..@col
-        @terreno["#{x}.#{y}"]= p5map noise(xoff,yoff), 0, 1, -65, 65
+        @terreno["#{x}.#{y}"]= map1d tnoise(xoff,yoff), -1.0..1.0, -65..65
         xoff += 0.2
       end
       yoff += 0.2
@@ -47,14 +48,6 @@ def draw
       end_shape(CLOSE)
     end
   end
-
-  def mouse_pressed
-    noise_mode NoiseMode::FAST_TERRAIN
-  end
-
-  def mouse_released
-    noise_mode NoiseMode::SMOOTH_TERRAIN
-  end
 end
 
 Terreno.new
diff --git a/external_library/gems/geomerative/library/f_agent/f_agent.rb b/external_library/gems/geomerative/library/f_agent/f_agent.rb
index 70fed58..df4431c 100644
--- a/external_library/gems/geomerative/library/f_agent/f_agent.rb
+++ b/external_library/gems/geomerative/library/f_agent/f_agent.rb
@@ -12,18 +12,20 @@ def initialize(loc:, increment:)
 
   def motion
     @offset += increment
-    loc.dist(Vec2D.new(noise(offset.x) * width, noise(offset.y) * height))
+    hw = width / 2
+    hh = height / 2
+    loc.dist(Vec2D.new((noise(offset.x) + 1) * hw, (noise(offset.y) + 1) * hh))
   end
 
   def display(xr:, yr:, m_point:)
     no_stroke
-    fill(255, 73)
-    dia = (150 / m_point) * 5
+    fill(255, 100)
+    dia = (150 / m_point) * 7
     # to get weird non-deterministic behaviour of original, created by use of
     # negative inputs to a random range surely not intended, use original:-
     # ellipse(loc.x + random(-xr, xr), loc.y + random(-yr, yr), dia, dia)
-    xr *= -1 if xr < 0 # guards against an invalid hi..low range
-    yr *= -1 if yr < 0
+    xr *= -1 if xr.negative? # guards against an invalid hi..low range
+    yr *= -1 if yr.negative?
     ellipse(loc.x + rand(-xr..xr), loc.y + rand(-yr..yr), dia, dia)
   end
 end
diff --git a/external_library/gems/geomerative/library/font_agent/font_agent.rb b/external_library/gems/geomerative/library/font_agent/font_agent.rb
index 1267270..1890260 100644
--- a/external_library/gems/geomerative/library/font_agent/font_agent.rb
+++ b/external_library/gems/geomerative/library/font_agent/font_agent.rb
@@ -11,9 +11,9 @@ def initialize(location:)
 
   def motion
     noise_scale = map1d(mouse_x, (0..width), (0.001..0.01))
-    noise_z = map1d(mouse_x, (0..height), (frame_count * 0.0003..frame_count * 0.02))
+    noise_z = map1d(mouse_y, (0..height), (frame_count * 0.0003..frame_count * 0.02))
     noise_vector = loc * noise_scale * noise_z
-    @mot = noise(noise_vector.x, noise_vector.y) * 53
+    @mot = (noise(noise_vector.x, noise_vector.y) + 1) * 26.5
   end
 
   def display(step:)
diff --git a/external_library/gems/geomerative/picrate_merge.rb b/external_library/gems/geomerative/picrate_merge.rb
index 94f983a..5518742 100644
--- a/external_library/gems/geomerative/picrate_merge.rb
+++ b/external_library/gems/geomerative/picrate_merge.rb
@@ -52,8 +52,8 @@ def setup
 
   def draw
     background(0, 50)
-    displace_x = noise(xoff) * width
-    displace_y = noise(yoff) * height
+    displace_x = (noise(xoff) + 1) * width / 2
+    displace_y = (noise(yoff) + 1) * height / 2
     @xoff += x_inc
     @yoff += y_inc
     translate(width / 2, height / 1.7)
diff --git a/external_library/gems/geomerative/typo_extra_bright.rb b/external_library/gems/geomerative/typo_extra_bright.rb
index b961922..4abd92e 100644
--- a/external_library/gems/geomerative/typo_extra_bright.rb
+++ b/external_library/gems/geomerative/typo_extra_bright.rb
@@ -1,3 +1,4 @@
+#!/usr/bin/env jruby
 require 'picrate'
 require 'geomerative'
 
diff --git a/external_library/gems/geomerative/typo_merge.rb b/external_library/gems/geomerative/typo_merge.rb
index d275c6c..b0c219f 100644
--- a/external_library/gems/geomerative/typo_merge.rb
+++ b/external_library/gems/geomerative/typo_merge.rb
@@ -23,7 +23,6 @@
 # http://www.ricardmarxer.com/geomerative/
 #
 # More info on these tutorials and workshops at :
-# www.freeartbureau.org/blog
 #
 # Adapted for picrate by Martin Prout
 #######################
@@ -52,8 +51,8 @@ def setup
 
   def draw
     background(0, 50)
-    displace_x = noise(xoff) * width
-    displace_y = noise(yoff) * height
+    displace_x = (noise(xoff) + 1) * width / 2
+    displace_y = (noise(yoff) + 1) * height / 2
     @xoff += x_inc
     @yoff += y_inc
     translate(width / 2, height / 1.7)
diff --git a/external_library/gems/pbox2d/lib/surface.rb b/external_library/gems/pbox2d/lib/surface.rb
index 96bcb0f..6e3146a 100644
--- a/external_library/gems/pbox2d/lib/surface.rb
+++ b/external_library/gems/pbox2d/lib/surface.rb
@@ -24,9 +24,9 @@ def initialize(app)
       # Doing some stuff with perlin noise to calculate a surface that points
       # down on one side and up on the other
       if x > width / 2
-        @y = 100 + (width - x) * 1.1 + map1d(noise(xoff), (0..1.0), (-80..80))
+        @y = 100 + (width - x) * 1.1 + map1d(SmoothNoise.noise(xoff), (-1.0..1.0), (-80..80))
       else
-        @y = 100 + x * 1.1 + map1d(noise(xoff), (0..1.0), (-80..80))
+        @y = 100 + x * 1.1 + map1d(SmoothNoise.noise(xoff), (-1.0..1.0), (-80..80))
       end
       # Store the vertex in screen coordinates
       surface << Vec2.new(x, y)
diff --git a/library/vecmath/vec3d/terrain.rb b/library/vecmath/vec3d/terrain.rb
index 93465a6..7f79f54 100644
--- a/library/vecmath/vec3d/terrain.rb
+++ b/library/vecmath/vec3d/terrain.rb
@@ -1,20 +1,31 @@
+#!/usr/bin/env jruby
 require 'picrate'
 
+# Alternative to using array or string as key
+Key = Struct.new(:x, :y) do
+  def eql?(key)
+    return false unless key.y == y
+    key.x == x
+  end
+end
+# The propane sketch press mouse to use SimpleNoise
 class Terrain < Processing::App
-  WIDTH = 1_400
-  HEIGHT = 1_100
+  WIDTH = 1400
+  HEIGHT = 1100
   SCL = 30
-  attr_reader :terrain, :rows, :columns, :mover
+  attr_reader :terrain, :rows, :columns, :mover, :smth
 
   def settings
     size 800, 800, P3D
   end
 
   def setup
+    sketch_title 'Terrain'
     @columns = WIDTH / SCL
     @rows = HEIGHT / SCL
     @terrain = {}
     @mover = 0
+    @smth = false
   end
 
   def draw
@@ -24,7 +35,11 @@ def draw
     (0..rows).each do |y|
       xoff = 0
       (0..columns).each do |x|
-        terrain[hash_key(x, y)] = Vec3D.new(x * SCL, y * SCL, map1d(noise(xoff, yoff), 0..1.0, -65..65))
+        if smth
+          terrain[Key.new(x, y)] = Vec3D.new(x * SCL, y * SCL, map1d(SmoothNoise.tnoise(xoff, yoff), -1.0..1.0, -65..65))
+        else
+          terrain[Key.new(x, y)] = Vec3D.new(x * SCL, y * SCL, map1d(tnoise(xoff, yoff), -1.0..1.0, -65..65))
+        end
         xoff += 0.2
       end
       yoff += 0.2
@@ -37,20 +52,19 @@ def draw
     (0...rows).each do |y|
       begin_shape(TRIANGLE_STRIP)
       (0..columns).each do |x|
-        terrain[hash_key(x, y)].to_vertex(renderer)
-        terrain[hash_key(x, y.succ)].to_vertex(renderer)
+        terrain[Key.new(x, y)].to_vertex(renderer)
+        terrain[Key.new(x, y.succ)].to_vertex(renderer)
       end
       end_shape
     end
   end
 
-  private
-
-  # HACK should be safe here
-  def hash_key(x, y)
-    WIDTH * y + x
+  def mouse_pressed
+    @smth = !smth
   end
 
+  private
+
   def renderer
     @renderer ||= GfxRender.new(self.g)
   end
diff --git a/library/vector_utils/fibonacci.rb b/library/vector_utils/fibonacci.rb
index afcf348..6b07bcc 100644
--- a/library/vector_utils/fibonacci.rb
+++ b/library/vector_utils/fibonacci.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: true
+#!/usr/bin/env jruby
 require 'picrate'
 require 'arcball'