Add optional parameter "epsilon" to Geometry2D.PointOnLine method

NoahStolk · Sep 26, 2024 · e13fcba · e13fcba
1 parent e64d294
commit e13fcba
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,6 +4,10 @@ This library uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [unreleased]
 
+### Added
+
+- Added optional parameter `epsilon` to `Geometry2D.PointOnLine` method. 
+
 ### Changed
 
 - Renamed `OrientedRectangle.Position` to `OrientedRectangle.Center`.

diff --git a/src/Detach/Collisions/Geometry2D.cs b/src/Detach/Collisions/Geometry2D.cs
@@ -8,7 +8,7 @@ public static class Geometry2D
 {
 	#region Point vs primitives
 
-	public static bool PointOnLine(Vector2 point, LineSegment2D line)
+	public static bool PointOnLine(Vector2 point, LineSegment2D line, float epsilon = 0.0001f)
 	{
 		// Find the slope.
 		float dy = line.End.Y - line.Start.Y;
@@ -21,7 +21,7 @@ public static bool PointOnLine(Vector2 point, LineSegment2D line)
 		float b = line.Start.Y - m * line.Start.X;
 
 		// Check if the point is on the line.
-		return MathF.Abs(point.Y - (m * point.X + b)) < 0.0001f;
+		return MathF.Abs(point.Y - (m * point.X + b)) < epsilon;
 	}
 
 	public static bool PointInCircle(Vector2 point, Circle circle)