Merge branch '3.7-beta' into 3.7-beta-cpp

spine-as3/spine-as3/src/spine/SkeletonClipping.as

@@ -212,7 +212,7 @@ package spine {
 
 			var clippingVertices : Vector.<Number> = clippingArea;
 			var clippingVerticesLast : int = clippingArea.length - 4;
-			var c0 : Number, c2 : Number, ua : Number;
+			var c0 : Number, c2 : Number, s : Number, ua : Number;
 			var i : int, n : int;
 			for (i = 0;; i += 2) {
 				var edgeX : Number = clippingVertices[i], edgeY : Number = clippingVertices[i + 1];
@@ -233,14 +233,26 @@ package spine {
 						}
 						// v1 inside, v2 outside
 						c0 = inputY2 - inputY; c2 = inputX2 - inputX;
-						ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						} else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 					} else if (side2) { // v1 outside, v2 inside
 						c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						} else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 						output.push(inputX2);
 						output.push(inputY2);
 					}

spine-c/spine-c/src/spine/SkeletonClipping.c

@@ -161,21 +161,33 @@ int /*boolean*/ _clip(spSkeletonClipping* self, float x1, float y1, float x2, fl
 			int side2 = deltaX * (inputY2 - edgeY2) - deltaY * (inputX2 - edgeX2) > 0;
 			if (deltaX * (inputY - edgeY2) - deltaY * (inputX - edgeX2) > 0) {
 				float c0, c2;
-				float ua;
+				float s, ua;
 				if (side2) {
 					spFloatArray_add(output, inputX2);
 					spFloatArray_add(output, inputY2);
 					continue;
 				}
 				c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-				ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-				spFloatArray_add(output, edgeX + (edgeX2 - edgeX) * ua);
-				spFloatArray_add(output, edgeY + (edgeY2 - edgeY) * ua);
+				s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+				if (ABS(s) > 0.000001f) {
+					ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+					spFloatArray_add(output, edgeX + (edgeX2 - edgeX) * ua);
+					spFloatArray_add(output, edgeY + (edgeY2 - edgeY) * ua);
+				} else {
+					spFloatArray_add(output, edgeX);
+					spFloatArray_add(output, edgeY);
+				}
 			} else if (side2) {
 				float c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-				float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-				spFloatArray_add(output, edgeX + (edgeX2 - edgeX) * ua);
-				spFloatArray_add(output, edgeY + (edgeY2 - edgeY) * ua);
+				float s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+				if (ABS(s) > 0.000001f) {
+					float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+					spFloatArray_add(output, edgeX + (edgeX2 - edgeX) * ua);
+					spFloatArray_add(output, edgeY + (edgeY2 - edgeY) * ua);
+				} else {
+					spFloatArray_add(output, edgeX);
+					spFloatArray_add(output, edgeY);
+				}
 				spFloatArray_add(output, inputX2);
 				spFloatArray_add(output, inputY2);
 			}

spine-cpp/spine-cpp/src/spine/SkeletonClipping.cpp

@@ -250,17 +250,27 @@ bool SkeletonClipping::clip(float x1, float y1, float x2, float y2, float x3, fl
 				}
 				// v1 inside, v2 outside
 				float c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-				float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) /
-						   (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-				output->add(edgeX + (edgeX2 - edgeX) * ua);
-				output->add(edgeY + (edgeY2 - edgeY) * ua);
+				float s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+				if (MathUtil::abs(s) > 0.000001f) {
+					float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+					output->add(edgeX + (edgeX2 - edgeX) * ua);
+					output->add(edgeY + (edgeY2 - edgeY) * ua);
+				} else {
+					output->add(edgeX);
+					output->add(edgeY);
+				}
 			} else if (side2) {
 				// v1 outside, v2 inside
 				float c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-				float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) /
-						   (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-				output->add(edgeX + (edgeX2 - edgeX) * ua);
-				output->add(edgeY + (edgeY2 - edgeY) * ua);
+				float s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+				if (MathUtil::abs(s) > 0.000001f) {
+					float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+					output->add(edgeX + (edgeX2 - edgeX) * ua);
+					output->add(edgeY + (edgeY2 - edgeY) * ua);
+				} else {
+					output->add(edgeX);
+					output->add(edgeY);
+				}
 				output->add(inputX2);
 				output->add(inputY2);
 			}

spine-csharp/src/SkeletonClipping.cs

@@ -78,12 +78,12 @@ namespace Spine {
 			clippedTriangles.Clear();
 			clippingPolygon.Clear();
 		}
-			
+
 		public void ClipTriangles (float[] vertices, int verticesLength, int[] triangles, int trianglesLength, float[] uvs) {
 			ExposedList<float> clipOutput = this.clipOutput, clippedVertices = this.clippedVertices;
 			var clippedTriangles = this.clippedTriangles;
 			var polygons = clippingPolygons.Items;
-			int polygonsCount = clippingPolygons.Count;			
+			int polygonsCount = clippingPolygons.Count;
 
 			int index = 0;
 			clippedVertices.Clear();
@@ -118,7 +118,7 @@ namespace Spine {
 						for (int ii = 0; ii < clipOutputLength; ii += 2) {
 							float x = clipOutputItems[ii], y = clipOutputItems[ii + 1];
 							clippedVerticesItems[s] = x;
-							clippedVerticesItems[s + 1] = y;							
+							clippedVerticesItems[s + 1] = y;
 							float c0 = x - x3, c1 = y - y3;
 							float a = (d0 * c0 + d1 * c1) * d;
 							float b = (d4 * c0 + d2 * c1) * d;
@@ -216,15 +216,27 @@ namespace Spine {
 						}
 						// v1 inside, v2 outside
 						float c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.Add(edgeX + (edgeX2 - edgeX) * ua);
-						output.Add(edgeY + (edgeY2 - edgeY) * ua);
+						float s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.Abs(s) > 0.000001f) {
+							float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.Add(edgeX + (edgeX2 - edgeX) * ua);
+							output.Add(edgeY + (edgeY2 - edgeY) * ua);
+						} else {
+							output.Add(edgeX);
+							output.Add(edgeY);
+						}
 					}
 					else if (side2) { // v1 outside, v2 inside
 						float c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.Add(edgeX + (edgeX2 - edgeX) * ua);
-						output.Add(edgeY + (edgeY2 - edgeY) * ua);
+						float s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.Abs(s) > 0.000001f) {
+							float ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.Add(edgeX + (edgeX2 - edgeX) * ua);
+							output.Add(edgeY + (edgeY2 - edgeY) * ua);
+						} else {
+							output.Add(edgeX);
+							output.Add(edgeY);
+						}
 						output.Add(inputX2);
 						output.Add(inputY2);
 					}

spine-lua/SkeletonClipping.lua

@@ -34,6 +34,7 @@ local Triangulator = require "spine-lua.Triangulator"
 local setmetatable = setmetatable
 local math_min = math.min
 local math_max = math.max
+local math_abs = math.abs
 local ipairs = ipairs
 local table_insert = table.insert
 local table_remove = table.remove
@@ -256,16 +257,28 @@ function SkeletonClipping:clip(x1, y1, x2, y2, x3, y3, clippingArea, output)
 					-- v1 inside, v2 outside
 					local c0 = inputY2 - inputY
 					local c2 = inputX2 - inputX
-					local ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY))
-					table_insert(output, edgeX + (edgeX2 - edgeX) * ua)
-					table_insert(output, edgeY + (edgeY2 - edgeY) * ua)
+					local s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY)
+					if math_abs(s) > 0.000001 then
+						local ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s
+						table_insert(output, edgeX + (edgeX2 - edgeX) * ua)
+						table_insert(output, edgeY + (edgeY2 - edgeY) * ua)
+					else
+						table_insert(output, edgeX)
+						table_insert(output, edgeY)
+					end
 				end
 			elseif side2 then -- v1 outside, v2 inside
 				local c0 = inputY2 - inputY
 				local c2 = inputX2 - inputX
-				local ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY))
-				table_insert(output, edgeX + (edgeX2 - edgeX) * ua)
-				table_insert(output, edgeY + (edgeY2 - edgeY) * ua)
+				local s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY)
+				if math_abs(s) > 0.000001 then
+					local ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s
+					table_insert(output, edgeX + (edgeX2 - edgeX) * ua)
+					table_insert(output, edgeY + (edgeY2 - edgeY) * ua)
+				else
+					table_insert(output, edgeX)
+					table_insert(output, edgeY)
+				end
 				table_insert(output, inputX2)
 				table_insert(output, inputY2)
 			end			

spine-ts/build/spine-all.d.ts

@@ -16,11 +16,11 @@ declare module spine {
 		setup = 0,
 		first = 1,
 		replace = 2,
-		add = 3
+		add = 3,
 	}
 	enum MixDirection {
 		in = 0,
-		out = 1
+		out = 1,
 	}
 	enum TimelineType {
 		rotate = 0,
@@ -37,7 +37,7 @@ declare module spine {
 		pathConstraintPosition = 11,
 		pathConstraintSpacing = 12,
 		pathConstraintMix = 13,
-		twoColor = 14
+		twoColor = 14,
 	}
 	abstract class CurveTimeline implements Timeline {
 		static LINEAR: number;
@@ -341,7 +341,7 @@ declare module spine {
 		end = 2,
 		dispose = 3,
 		complete = 4,
-		event = 5
+		event = 5,
 	}
 	interface AnimationStateListener2 {
 		start(entry: TrackEntry): void;
@@ -380,8 +380,8 @@ declare module spine {
 		private toLoad;
 		private loaded;
 		constructor(textureLoader: (image: HTMLImageElement) => any, pathPrefix?: string);
-		private static downloadText;
-		private static downloadBinary;
+		private static downloadText(url, success, error);
+		private static downloadBinary(url, success, error);
 		loadText(path: string, success?: (path: string, text: string) => void, error?: (path: string, error: string) => void): void;
 		loadTexture(path: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
 		loadTextureData(path: string, data: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
@@ -414,7 +414,7 @@ declare module spine {
 		Normal = 0,
 		Additive = 1,
 		Multiply = 2,
-		Screen = 3
+		Screen = 3,
 	}
 }
 declare module spine {
@@ -483,7 +483,7 @@ declare module spine {
 		OnlyTranslation = 1,
 		NoRotationOrReflection = 2,
 		NoScale = 3,
-		NoScaleOrReflection = 4
+		NoScaleOrReflection = 4,
 	}
 }
 declare module spine {
@@ -593,17 +593,17 @@ declare module spine {
 	}
 	enum PositionMode {
 		Fixed = 0,
-		Percent = 1
+		Percent = 1,
 	}
 	enum SpacingMode {
 		Length = 0,
 		Fixed = 1,
-		Percent = 2
+		Percent = 2,
 	}
 	enum RotateMode {
 		Tangent = 0,
 		Chain = 1,
-		ChainScale = 2
+		ChainScale = 2,
 	}
 }
 declare module spine {
@@ -614,12 +614,12 @@ declare module spine {
 		private rawAssets;
 		private errors;
 		constructor(pathPrefix?: string);
-		private queueAsset;
+		private queueAsset(clientId, textureLoader, path);
 		loadText(clientId: string, path: string): void;
 		loadJson(clientId: string, path: string): void;
 		loadTexture(clientId: string, textureLoader: (image: HTMLImageElement) => any, path: string): void;
 		get(clientId: string, path: string): any;
-		private updateClientAssets;
+		private updateClientAssets(clientAssets);
 		isLoadingComplete(clientId: string): boolean;
 		dispose(): void;
 		hasErrors(): boolean;
@@ -823,12 +823,12 @@ declare module spine {
 		MipMapNearestNearest = 9984,
 		MipMapLinearNearest = 9985,
 		MipMapNearestLinear = 9986,
-		MipMapLinearLinear = 9987
+		MipMapLinearLinear = 9987,
 	}
 	enum TextureWrap {
 		MirroredRepeat = 33648,
 		ClampToEdge = 33071,
-		Repeat = 10497
+		Repeat = 10497,
 	}
 	class TextureRegion {
 		renderObject: any;
@@ -855,7 +855,7 @@ declare module spine {
 		pages: TextureAtlasPage[];
 		regions: TextureAtlasRegion[];
 		constructor(atlasText: string, textureLoader: (path: string) => any);
-		private load;
+		private load(atlasText, textureLoader);
 		findRegion(name: string): TextureAtlasRegion;
 		dispose(): void;
 	}
@@ -931,9 +931,9 @@ declare module spine {
 		private polygonIndicesPool;
 		triangulate(verticesArray: ArrayLike<number>): Array<number>;
 		decompose(verticesArray: Array<number>, triangles: Array<number>): Array<Array<number>>;
-		private static isConcave;
-		private static positiveArea;
-		private static winding;
+		private static isConcave(index, vertexCount, vertices, indices);
+		private static positiveArea(p1x, p1y, p2x, p2y, p3x, p3y);
+		private static winding(p1x, p1y, p2x, p2y, p3x, p3y);
 	}
 }
 declare module spine {
@@ -1105,7 +1105,7 @@ declare module spine {
 		Mesh = 2,
 		LinkedMesh = 3,
 		Path = 4,
-		Point = 5
+		Point = 5,
 	}
 }
 declare module spine {
@@ -1271,11 +1271,11 @@ declare module spine.canvas {
 		private tempColor;
 		constructor(context: CanvasRenderingContext2D);
 		draw(skeleton: Skeleton): void;
-		private drawImages;
-		private drawTriangles;
-		private drawTriangle;
-		private computeRegionVertices;
-		private computeMeshVertices;
+		private drawImages(skeleton);
+		private drawTriangles(skeleton);
+		private drawTriangle(img, x0, y0, u0, v0, x1, y1, u1, v1, x2, y2, u2, v2);
+		private computeRegionVertices(slot, region, pma);
+		private computeMeshVertices(slot, mesh, pma);
 	}
 }
 declare module spine.webgl {
@@ -1330,7 +1330,7 @@ declare module spine.webgl {
 		touchesPool: Pool<Touch>;
 		private listeners;
 		constructor(element: HTMLElement);
-		private setupCallbacks;
+		private setupCallbacks(element);
 		addListener(listener: InputListener): void;
 		removeListener(listener: InputListener): void;
 	}
@@ -1439,7 +1439,7 @@ declare module spine.webgl {
 		drawWithOffset(shader: Shader, primitiveType: number, offset: number, count: number): void;
 		bind(shader: Shader): void;
 		unbind(shader: Shader): void;
-		private update;
+		private update();
 		restore(): void;
 		dispose(): void;
 	}
@@ -1465,7 +1465,7 @@ declare module spine.webgl {
 		constructor();
 	}
 	enum VertexAttributeType {
-		Float = 0
+		Float = 0,
 	}
 }
 declare module spine.webgl {
@@ -1484,7 +1484,7 @@ declare module spine.webgl {
 		begin(shader: Shader): void;
 		setBlendMode(srcBlend: number, dstBlend: number): void;
 		draw(texture: GLTexture, vertices: ArrayLike<number>, indices: Array<number>): void;
-		private flush;
+		private flush();
 		end(): void;
 		getDrawCalls(): number;
 		dispose(): void;
@@ -1524,13 +1524,13 @@ declare module spine.webgl {
 		curve(x1: number, y1: number, cx1: number, cy1: number, cx2: number, cy2: number, x2: number, y2: number, segments: number, color?: Color): void;
 		end(): void;
 		resize(resizeMode: ResizeMode): void;
-		private enableRenderer;
+		private enableRenderer(renderer);
 		dispose(): void;
 	}
 	enum ResizeMode {
 		Stretch = 0,
 		Expand = 1,
-		Fit = 2
+		Fit = 2,
 	}
 }
 declare module spine.webgl {
@@ -1558,9 +1558,9 @@ declare module spine.webgl {
 		getVertexShaderSource(): string;
 		getFragmentSource(): string;
 		constructor(context: ManagedWebGLRenderingContext | WebGLRenderingContext, vertexShader: string, fragmentShader: string);
-		private compile;
-		private compileShader;
-		private compileProgram;
+		private compile();
+		private compileShader(type, source);
+		private compileProgram(vs, fs);
 		restore(): void;
 		bind(): void;
 		unbind(): void;
@@ -1607,16 +1607,16 @@ declare module spine.webgl {
 		polygon(polygonVertices: ArrayLike<number>, offset: number, count: number, color?: Color): void;
 		circle(filled: boolean, x: number, y: number, radius: number, color?: Color, segments?: number): void;
 		curve(x1: number, y1: number, cx1: number, cy1: number, cx2: number, cy2: number, x2: number, y2: number, segments: number, color?: Color): void;
-		private vertex;
+		private vertex(x, y, color);
 		end(): void;
-		private flush;
-		private check;
+		private flush();
+		private check(shapeType, numVertices);
 		dispose(): void;
 	}
 	enum ShapeType {
 		Point = 0,
 		Line = 1,
-		Filled = 4
+		Filled = 4,
 	}
 }
 declare module spine.webgl {
@@ -1756,9 +1756,9 @@ declare module spine.threejs {
 		private tempColor;
 		constructor(skeletonData: SkeletonData);
 		update(deltaTime: number): void;
-		private clearBatches;
-		private nextBatch;
-		private updateGeometry;
+		private clearBatches();
+		private nextBatch();
+		private updateGeometry();
 	}
 }
 declare module spine.threejs {
@@ -1870,11 +1870,11 @@ declare module spine {
 		scale(sourceWidth: number, sourceHeight: number, targetWidth: number, targetHeight: number): Vector2;
 		loadSkeleton(): void;
 		setupInput(): void;
-		private play;
-		private pause;
-		private setAnimation;
-		private percentageToWorldUnit;
-		private calculateAnimationViewport;
+		private play();
+		private pause();
+		private setAnimation(animation);
+		private percentageToWorldUnit(size, percentageOrAbsolute);
+		private calculateAnimationViewport(animationName);
 	}
 }
 declare module spine {
@@ -1898,10 +1898,10 @@ declare module spine {
 		private loaded;
 		private bounds;
 		constructor(element: HTMLElement | string, config: SpineWidgetConfig);
-		private validateConfig;
-		private load;
-		private render;
-		private resize;
+		private validateConfig(config);
+		private load();
+		private render();
+		private resize();
 		pause(): void;
 		play(): void;
 		isPlaying(): boolean;
@@ -1909,7 +1909,7 @@ declare module spine {
 		static loadWidgets(): void;
 		static loadWidget(widget: HTMLElement): void;
 		static pageLoaded: boolean;
-		private static ready;
+		private static ready();
 		static setupDOMListener(): void;
 	}
 	class SpineWidgetConfig {

spine-ts/build/spine-all.js

@@ -1,10 +1,7 @@
 var __extends = (this && this.__extends) || (function () {
-	var extendStatics = function (d, b) {
-		extendStatics = Object.setPrototypeOf ||
-			({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
-			function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
-		return extendStatics(d, b);
-	}
+	var extendStatics = Object.setPrototypeOf ||
+		({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+		function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
 	return function (d, b) {
 		extendStatics(d, b);
 		function __() { this.constructor = d; }
@@ -4267,15 +4264,29 @@ var spine;
 							continue;
 						}
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 					}
 					else if (side2) {
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 						output.push(inputX2);
 						output.push(inputY2);
 					}

spine-ts/build/spine-canvas.d.ts

@@ -16,11 +16,11 @@ declare module spine {
 		setup = 0,
 		first = 1,
 		replace = 2,
-		add = 3
+		add = 3,
 	}
 	enum MixDirection {
 		in = 0,
-		out = 1
+		out = 1,
 	}
 	enum TimelineType {
 		rotate = 0,
@@ -37,7 +37,7 @@ declare module spine {
 		pathConstraintPosition = 11,
 		pathConstraintSpacing = 12,
 		pathConstraintMix = 13,
-		twoColor = 14
+		twoColor = 14,
 	}
 	abstract class CurveTimeline implements Timeline {
 		static LINEAR: number;
@@ -341,7 +341,7 @@ declare module spine {
 		end = 2,
 		dispose = 3,
 		complete = 4,
-		event = 5
+		event = 5,
 	}
 	interface AnimationStateListener2 {
 		start(entry: TrackEntry): void;
@@ -380,8 +380,8 @@ declare module spine {
 		private toLoad;
 		private loaded;
 		constructor(textureLoader: (image: HTMLImageElement) => any, pathPrefix?: string);
-		private static downloadText;
-		private static downloadBinary;
+		private static downloadText(url, success, error);
+		private static downloadBinary(url, success, error);
 		loadText(path: string, success?: (path: string, text: string) => void, error?: (path: string, error: string) => void): void;
 		loadTexture(path: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
 		loadTextureData(path: string, data: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
@@ -414,7 +414,7 @@ declare module spine {
 		Normal = 0,
 		Additive = 1,
 		Multiply = 2,
-		Screen = 3
+		Screen = 3,
 	}
 }
 declare module spine {
@@ -483,7 +483,7 @@ declare module spine {
 		OnlyTranslation = 1,
 		NoRotationOrReflection = 2,
 		NoScale = 3,
-		NoScaleOrReflection = 4
+		NoScaleOrReflection = 4,
 	}
 }
 declare module spine {
@@ -593,17 +593,17 @@ declare module spine {
 	}
 	enum PositionMode {
 		Fixed = 0,
-		Percent = 1
+		Percent = 1,
 	}
 	enum SpacingMode {
 		Length = 0,
 		Fixed = 1,
-		Percent = 2
+		Percent = 2,
 	}
 	enum RotateMode {
 		Tangent = 0,
 		Chain = 1,
-		ChainScale = 2
+		ChainScale = 2,
 	}
 }
 declare module spine {
@@ -614,12 +614,12 @@ declare module spine {
 		private rawAssets;
 		private errors;
 		constructor(pathPrefix?: string);
-		private queueAsset;
+		private queueAsset(clientId, textureLoader, path);
 		loadText(clientId: string, path: string): void;
 		loadJson(clientId: string, path: string): void;
 		loadTexture(clientId: string, textureLoader: (image: HTMLImageElement) => any, path: string): void;
 		get(clientId: string, path: string): any;
-		private updateClientAssets;
+		private updateClientAssets(clientAssets);
 		isLoadingComplete(clientId: string): boolean;
 		dispose(): void;
 		hasErrors(): boolean;
@@ -823,12 +823,12 @@ declare module spine {
 		MipMapNearestNearest = 9984,
 		MipMapLinearNearest = 9985,
 		MipMapNearestLinear = 9986,
-		MipMapLinearLinear = 9987
+		MipMapLinearLinear = 9987,
 	}
 	enum TextureWrap {
 		MirroredRepeat = 33648,
 		ClampToEdge = 33071,
-		Repeat = 10497
+		Repeat = 10497,
 	}
 	class TextureRegion {
 		renderObject: any;
@@ -855,7 +855,7 @@ declare module spine {
 		pages: TextureAtlasPage[];
 		regions: TextureAtlasRegion[];
 		constructor(atlasText: string, textureLoader: (path: string) => any);
-		private load;
+		private load(atlasText, textureLoader);
 		findRegion(name: string): TextureAtlasRegion;
 		dispose(): void;
 	}
@@ -931,9 +931,9 @@ declare module spine {
 		private polygonIndicesPool;
 		triangulate(verticesArray: ArrayLike<number>): Array<number>;
 		decompose(verticesArray: Array<number>, triangles: Array<number>): Array<Array<number>>;
-		private static isConcave;
-		private static positiveArea;
-		private static winding;
+		private static isConcave(index, vertexCount, vertices, indices);
+		private static positiveArea(p1x, p1y, p2x, p2y, p3x, p3y);
+		private static winding(p1x, p1y, p2x, p2y, p3x, p3y);
 	}
 }
 declare module spine {
@@ -1105,7 +1105,7 @@ declare module spine {
 		Mesh = 2,
 		LinkedMesh = 3,
 		Path = 4,
-		Point = 5
+		Point = 5,
 	}
 }
 declare module spine {
@@ -1271,10 +1271,10 @@ declare module spine.canvas {
 		private tempColor;
 		constructor(context: CanvasRenderingContext2D);
 		draw(skeleton: Skeleton): void;
-		private drawImages;
-		private drawTriangles;
-		private drawTriangle;
-		private computeRegionVertices;
-		private computeMeshVertices;
+		private drawImages(skeleton);
+		private drawTriangles(skeleton);
+		private drawTriangle(img, x0, y0, u0, v0, x1, y1, u1, v1, x2, y2, u2, v2);
+		private computeRegionVertices(slot, region, pma);
+		private computeMeshVertices(slot, mesh, pma);
 	}
 }

spine-ts/build/spine-canvas.js

@@ -1,10 +1,7 @@
 var __extends = (this && this.__extends) || (function () {
-	var extendStatics = function (d, b) {
-		extendStatics = Object.setPrototypeOf ||
-			({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
-			function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
-		return extendStatics(d, b);
-	}
+	var extendStatics = Object.setPrototypeOf ||
+		({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+		function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
 	return function (d, b) {
 		extendStatics(d, b);
 		function __() { this.constructor = d; }
@@ -4267,15 +4264,29 @@ var spine;
 							continue;
 						}
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 					}
 					else if (side2) {
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 						output.push(inputX2);
 						output.push(inputY2);
 					}

spine-ts/build/spine-core.d.ts

@@ -16,11 +16,11 @@ declare module spine {
 		setup = 0,
 		first = 1,
 		replace = 2,
-		add = 3
+		add = 3,
 	}
 	enum MixDirection {
 		in = 0,
-		out = 1
+		out = 1,
 	}
 	enum TimelineType {
 		rotate = 0,
@@ -37,7 +37,7 @@ declare module spine {
 		pathConstraintPosition = 11,
 		pathConstraintSpacing = 12,
 		pathConstraintMix = 13,
-		twoColor = 14
+		twoColor = 14,
 	}
 	abstract class CurveTimeline implements Timeline {
 		static LINEAR: number;
@@ -341,7 +341,7 @@ declare module spine {
 		end = 2,
 		dispose = 3,
 		complete = 4,
-		event = 5
+		event = 5,
 	}
 	interface AnimationStateListener2 {
 		start(entry: TrackEntry): void;
@@ -380,8 +380,8 @@ declare module spine {
 		private toLoad;
 		private loaded;
 		constructor(textureLoader: (image: HTMLImageElement) => any, pathPrefix?: string);
-		private static downloadText;
-		private static downloadBinary;
+		private static downloadText(url, success, error);
+		private static downloadBinary(url, success, error);
 		loadText(path: string, success?: (path: string, text: string) => void, error?: (path: string, error: string) => void): void;
 		loadTexture(path: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
 		loadTextureData(path: string, data: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
@@ -414,7 +414,7 @@ declare module spine {
 		Normal = 0,
 		Additive = 1,
 		Multiply = 2,
-		Screen = 3
+		Screen = 3,
 	}
 }
 declare module spine {
@@ -483,7 +483,7 @@ declare module spine {
 		OnlyTranslation = 1,
 		NoRotationOrReflection = 2,
 		NoScale = 3,
-		NoScaleOrReflection = 4
+		NoScaleOrReflection = 4,
 	}
 }
 declare module spine {
@@ -593,17 +593,17 @@ declare module spine {
 	}
 	enum PositionMode {
 		Fixed = 0,
-		Percent = 1
+		Percent = 1,
 	}
 	enum SpacingMode {
 		Length = 0,
 		Fixed = 1,
-		Percent = 2
+		Percent = 2,
 	}
 	enum RotateMode {
 		Tangent = 0,
 		Chain = 1,
-		ChainScale = 2
+		ChainScale = 2,
 	}
 }
 declare module spine {
@@ -614,12 +614,12 @@ declare module spine {
 		private rawAssets;
 		private errors;
 		constructor(pathPrefix?: string);
-		private queueAsset;
+		private queueAsset(clientId, textureLoader, path);
 		loadText(clientId: string, path: string): void;
 		loadJson(clientId: string, path: string): void;
 		loadTexture(clientId: string, textureLoader: (image: HTMLImageElement) => any, path: string): void;
 		get(clientId: string, path: string): any;
-		private updateClientAssets;
+		private updateClientAssets(clientAssets);
 		isLoadingComplete(clientId: string): boolean;
 		dispose(): void;
 		hasErrors(): boolean;
@@ -823,12 +823,12 @@ declare module spine {
 		MipMapNearestNearest = 9984,
 		MipMapLinearNearest = 9985,
 		MipMapNearestLinear = 9986,
-		MipMapLinearLinear = 9987
+		MipMapLinearLinear = 9987,
 	}
 	enum TextureWrap {
 		MirroredRepeat = 33648,
 		ClampToEdge = 33071,
-		Repeat = 10497
+		Repeat = 10497,
 	}
 	class TextureRegion {
 		renderObject: any;
@@ -855,7 +855,7 @@ declare module spine {
 		pages: TextureAtlasPage[];
 		regions: TextureAtlasRegion[];
 		constructor(atlasText: string, textureLoader: (path: string) => any);
-		private load;
+		private load(atlasText, textureLoader);
 		findRegion(name: string): TextureAtlasRegion;
 		dispose(): void;
 	}
@@ -931,9 +931,9 @@ declare module spine {
 		private polygonIndicesPool;
 		triangulate(verticesArray: ArrayLike<number>): Array<number>;
 		decompose(verticesArray: Array<number>, triangles: Array<number>): Array<Array<number>>;
-		private static isConcave;
-		private static positiveArea;
-		private static winding;
+		private static isConcave(index, vertexCount, vertices, indices);
+		private static positiveArea(p1x, p1y, p2x, p2y, p3x, p3y);
+		private static winding(p1x, p1y, p2x, p2y, p3x, p3y);
 	}
 }
 declare module spine {
@@ -1105,7 +1105,7 @@ declare module spine {
 		Mesh = 2,
 		LinkedMesh = 3,
 		Path = 4,
-		Point = 5
+		Point = 5,
 	}
 }
 declare module spine {

spine-ts/build/spine-core.js

@@ -1,10 +1,7 @@
 var __extends = (this && this.__extends) || (function () {
-	var extendStatics = function (d, b) {
-		extendStatics = Object.setPrototypeOf ||
-			({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
-			function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
-		return extendStatics(d, b);
-	}
+	var extendStatics = Object.setPrototypeOf ||
+		({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+		function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
 	return function (d, b) {
 		extendStatics(d, b);
 		function __() { this.constructor = d; }
@@ -4267,15 +4264,29 @@ var spine;
 							continue;
 						}
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 					}
 					else if (side2) {
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 						output.push(inputX2);
 						output.push(inputY2);
 					}

spine-ts/build/spine-threejs.d.ts

@@ -16,11 +16,11 @@ declare module spine {
 		setup = 0,
 		first = 1,
 		replace = 2,
-		add = 3
+		add = 3,
 	}
 	enum MixDirection {
 		in = 0,
-		out = 1
+		out = 1,
 	}
 	enum TimelineType {
 		rotate = 0,
@@ -37,7 +37,7 @@ declare module spine {
 		pathConstraintPosition = 11,
 		pathConstraintSpacing = 12,
 		pathConstraintMix = 13,
-		twoColor = 14
+		twoColor = 14,
 	}
 	abstract class CurveTimeline implements Timeline {
 		static LINEAR: number;
@@ -341,7 +341,7 @@ declare module spine {
 		end = 2,
 		dispose = 3,
 		complete = 4,
-		event = 5
+		event = 5,
 	}
 	interface AnimationStateListener2 {
 		start(entry: TrackEntry): void;
@@ -380,8 +380,8 @@ declare module spine {
 		private toLoad;
 		private loaded;
 		constructor(textureLoader: (image: HTMLImageElement) => any, pathPrefix?: string);
-		private static downloadText;
-		private static downloadBinary;
+		private static downloadText(url, success, error);
+		private static downloadBinary(url, success, error);
 		loadText(path: string, success?: (path: string, text: string) => void, error?: (path: string, error: string) => void): void;
 		loadTexture(path: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
 		loadTextureData(path: string, data: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
@@ -414,7 +414,7 @@ declare module spine {
 		Normal = 0,
 		Additive = 1,
 		Multiply = 2,
-		Screen = 3
+		Screen = 3,
 	}
 }
 declare module spine {
@@ -483,7 +483,7 @@ declare module spine {
 		OnlyTranslation = 1,
 		NoRotationOrReflection = 2,
 		NoScale = 3,
-		NoScaleOrReflection = 4
+		NoScaleOrReflection = 4,
 	}
 }
 declare module spine {
@@ -593,17 +593,17 @@ declare module spine {
 	}
 	enum PositionMode {
 		Fixed = 0,
-		Percent = 1
+		Percent = 1,
 	}
 	enum SpacingMode {
 		Length = 0,
 		Fixed = 1,
-		Percent = 2
+		Percent = 2,
 	}
 	enum RotateMode {
 		Tangent = 0,
 		Chain = 1,
-		ChainScale = 2
+		ChainScale = 2,
 	}
 }
 declare module spine {
@@ -614,12 +614,12 @@ declare module spine {
 		private rawAssets;
 		private errors;
 		constructor(pathPrefix?: string);
-		private queueAsset;
+		private queueAsset(clientId, textureLoader, path);
 		loadText(clientId: string, path: string): void;
 		loadJson(clientId: string, path: string): void;
 		loadTexture(clientId: string, textureLoader: (image: HTMLImageElement) => any, path: string): void;
 		get(clientId: string, path: string): any;
-		private updateClientAssets;
+		private updateClientAssets(clientAssets);
 		isLoadingComplete(clientId: string): boolean;
 		dispose(): void;
 		hasErrors(): boolean;
@@ -823,12 +823,12 @@ declare module spine {
 		MipMapNearestNearest = 9984,
 		MipMapLinearNearest = 9985,
 		MipMapNearestLinear = 9986,
-		MipMapLinearLinear = 9987
+		MipMapLinearLinear = 9987,
 	}
 	enum TextureWrap {
 		MirroredRepeat = 33648,
 		ClampToEdge = 33071,
-		Repeat = 10497
+		Repeat = 10497,
 	}
 	class TextureRegion {
 		renderObject: any;
@@ -855,7 +855,7 @@ declare module spine {
 		pages: TextureAtlasPage[];
 		regions: TextureAtlasRegion[];
 		constructor(atlasText: string, textureLoader: (path: string) => any);
-		private load;
+		private load(atlasText, textureLoader);
 		findRegion(name: string): TextureAtlasRegion;
 		dispose(): void;
 	}
@@ -931,9 +931,9 @@ declare module spine {
 		private polygonIndicesPool;
 		triangulate(verticesArray: ArrayLike<number>): Array<number>;
 		decompose(verticesArray: Array<number>, triangles: Array<number>): Array<Array<number>>;
-		private static isConcave;
-		private static positiveArea;
-		private static winding;
+		private static isConcave(index, vertexCount, vertices, indices);
+		private static positiveArea(p1x, p1y, p2x, p2y, p3x, p3y);
+		private static winding(p1x, p1y, p2x, p2y, p3x, p3y);
 	}
 }
 declare module spine {
@@ -1105,7 +1105,7 @@ declare module spine {
 		Mesh = 2,
 		LinkedMesh = 3,
 		Path = 4,
-		Point = 5
+		Point = 5,
 	}
 }
 declare module spine {
@@ -1290,9 +1290,9 @@ declare module spine.threejs {
 		private tempColor;
 		constructor(skeletonData: SkeletonData);
 		update(deltaTime: number): void;
-		private clearBatches;
-		private nextBatch;
-		private updateGeometry;
+		private clearBatches();
+		private nextBatch();
+		private updateGeometry();
 	}
 }
 declare module spine.threejs {

spine-ts/build/spine-threejs.js

@@ -1,10 +1,7 @@
 var __extends = (this && this.__extends) || (function () {
-	var extendStatics = function (d, b) {
-		extendStatics = Object.setPrototypeOf ||
-			({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
-			function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
-		return extendStatics(d, b);
-	}
+	var extendStatics = Object.setPrototypeOf ||
+		({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+		function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
 	return function (d, b) {
 		extendStatics(d, b);
 		function __() { this.constructor = d; }
@@ -4267,15 +4264,29 @@ var spine;
 							continue;
 						}
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 					}
 					else if (side2) {
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 						output.push(inputX2);
 						output.push(inputY2);
 					}

spine-ts/build/spine-webgl.d.ts

@@ -16,11 +16,11 @@ declare module spine {
 		setup = 0,
 		first = 1,
 		replace = 2,
-		add = 3
+		add = 3,
 	}
 	enum MixDirection {
 		in = 0,
-		out = 1
+		out = 1,
 	}
 	enum TimelineType {
 		rotate = 0,
@@ -37,7 +37,7 @@ declare module spine {
 		pathConstraintPosition = 11,
 		pathConstraintSpacing = 12,
 		pathConstraintMix = 13,
-		twoColor = 14
+		twoColor = 14,
 	}
 	abstract class CurveTimeline implements Timeline {
 		static LINEAR: number;
@@ -341,7 +341,7 @@ declare module spine {
 		end = 2,
 		dispose = 3,
 		complete = 4,
-		event = 5
+		event = 5,
 	}
 	interface AnimationStateListener2 {
 		start(entry: TrackEntry): void;
@@ -380,8 +380,8 @@ declare module spine {
 		private toLoad;
 		private loaded;
 		constructor(textureLoader: (image: HTMLImageElement) => any, pathPrefix?: string);
-		private static downloadText;
-		private static downloadBinary;
+		private static downloadText(url, success, error);
+		private static downloadBinary(url, success, error);
 		loadText(path: string, success?: (path: string, text: string) => void, error?: (path: string, error: string) => void): void;
 		loadTexture(path: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
 		loadTextureData(path: string, data: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
@@ -414,7 +414,7 @@ declare module spine {
 		Normal = 0,
 		Additive = 1,
 		Multiply = 2,
-		Screen = 3
+		Screen = 3,
 	}
 }
 declare module spine {
@@ -483,7 +483,7 @@ declare module spine {
 		OnlyTranslation = 1,
 		NoRotationOrReflection = 2,
 		NoScale = 3,
-		NoScaleOrReflection = 4
+		NoScaleOrReflection = 4,
 	}
 }
 declare module spine {
@@ -593,17 +593,17 @@ declare module spine {
 	}
 	enum PositionMode {
 		Fixed = 0,
-		Percent = 1
+		Percent = 1,
 	}
 	enum SpacingMode {
 		Length = 0,
 		Fixed = 1,
-		Percent = 2
+		Percent = 2,
 	}
 	enum RotateMode {
 		Tangent = 0,
 		Chain = 1,
-		ChainScale = 2
+		ChainScale = 2,
 	}
 }
 declare module spine {
@@ -614,12 +614,12 @@ declare module spine {
 		private rawAssets;
 		private errors;
 		constructor(pathPrefix?: string);
-		private queueAsset;
+		private queueAsset(clientId, textureLoader, path);
 		loadText(clientId: string, path: string): void;
 		loadJson(clientId: string, path: string): void;
 		loadTexture(clientId: string, textureLoader: (image: HTMLImageElement) => any, path: string): void;
 		get(clientId: string, path: string): any;
-		private updateClientAssets;
+		private updateClientAssets(clientAssets);
 		isLoadingComplete(clientId: string): boolean;
 		dispose(): void;
 		hasErrors(): boolean;
@@ -823,12 +823,12 @@ declare module spine {
 		MipMapNearestNearest = 9984,
 		MipMapLinearNearest = 9985,
 		MipMapNearestLinear = 9986,
-		MipMapLinearLinear = 9987
+		MipMapLinearLinear = 9987,
 	}
 	enum TextureWrap {
 		MirroredRepeat = 33648,
 		ClampToEdge = 33071,
-		Repeat = 10497
+		Repeat = 10497,
 	}
 	class TextureRegion {
 		renderObject: any;
@@ -855,7 +855,7 @@ declare module spine {
 		pages: TextureAtlasPage[];
 		regions: TextureAtlasRegion[];
 		constructor(atlasText: string, textureLoader: (path: string) => any);
-		private load;
+		private load(atlasText, textureLoader);
 		findRegion(name: string): TextureAtlasRegion;
 		dispose(): void;
 	}
@@ -931,9 +931,9 @@ declare module spine {
 		private polygonIndicesPool;
 		triangulate(verticesArray: ArrayLike<number>): Array<number>;
 		decompose(verticesArray: Array<number>, triangles: Array<number>): Array<Array<number>>;
-		private static isConcave;
-		private static positiveArea;
-		private static winding;
+		private static isConcave(index, vertexCount, vertices, indices);
+		private static positiveArea(p1x, p1y, p2x, p2y, p3x, p3y);
+		private static winding(p1x, p1y, p2x, p2y, p3x, p3y);
 	}
 }
 declare module spine {
@@ -1105,7 +1105,7 @@ declare module spine {
 		Mesh = 2,
 		LinkedMesh = 3,
 		Path = 4,
-		Point = 5
+		Point = 5,
 	}
 }
 declare module spine {
@@ -1299,7 +1299,7 @@ declare module spine.webgl {
 		touchesPool: Pool<Touch>;
 		private listeners;
 		constructor(element: HTMLElement);
-		private setupCallbacks;
+		private setupCallbacks(element);
 		addListener(listener: InputListener): void;
 		removeListener(listener: InputListener): void;
 	}
@@ -1408,7 +1408,7 @@ declare module spine.webgl {
 		drawWithOffset(shader: Shader, primitiveType: number, offset: number, count: number): void;
 		bind(shader: Shader): void;
 		unbind(shader: Shader): void;
-		private update;
+		private update();
 		restore(): void;
 		dispose(): void;
 	}
@@ -1434,7 +1434,7 @@ declare module spine.webgl {
 		constructor();
 	}
 	enum VertexAttributeType {
-		Float = 0
+		Float = 0,
 	}
 }
 declare module spine.webgl {
@@ -1453,7 +1453,7 @@ declare module spine.webgl {
 		begin(shader: Shader): void;
 		setBlendMode(srcBlend: number, dstBlend: number): void;
 		draw(texture: GLTexture, vertices: ArrayLike<number>, indices: Array<number>): void;
-		private flush;
+		private flush();
 		end(): void;
 		getDrawCalls(): number;
 		dispose(): void;
@@ -1493,13 +1493,13 @@ declare module spine.webgl {
 		curve(x1: number, y1: number, cx1: number, cy1: number, cx2: number, cy2: number, x2: number, y2: number, segments: number, color?: Color): void;
 		end(): void;
 		resize(resizeMode: ResizeMode): void;
-		private enableRenderer;
+		private enableRenderer(renderer);
 		dispose(): void;
 	}
 	enum ResizeMode {
 		Stretch = 0,
 		Expand = 1,
-		Fit = 2
+		Fit = 2,
 	}
 }
 declare module spine.webgl {
@@ -1527,9 +1527,9 @@ declare module spine.webgl {
 		getVertexShaderSource(): string;
 		getFragmentSource(): string;
 		constructor(context: ManagedWebGLRenderingContext | WebGLRenderingContext, vertexShader: string, fragmentShader: string);
-		private compile;
-		private compileShader;
-		private compileProgram;
+		private compile();
+		private compileShader(type, source);
+		private compileProgram(vs, fs);
 		restore(): void;
 		bind(): void;
 		unbind(): void;
@@ -1576,16 +1576,16 @@ declare module spine.webgl {
 		polygon(polygonVertices: ArrayLike<number>, offset: number, count: number, color?: Color): void;
 		circle(filled: boolean, x: number, y: number, radius: number, color?: Color, segments?: number): void;
 		curve(x1: number, y1: number, cx1: number, cy1: number, cx2: number, cy2: number, x2: number, y2: number, segments: number, color?: Color): void;
-		private vertex;
+		private vertex(x, y, color);
 		end(): void;
-		private flush;
-		private check;
+		private flush();
+		private check(shapeType, numVertices);
 		dispose(): void;
 	}
 	enum ShapeType {
 		Point = 0,
 		Line = 1,
-		Filled = 4
+		Filled = 4,
 	}
 }
 declare module spine.webgl {

spine-ts/build/spine-webgl.js

@@ -1,10 +1,7 @@
 var __extends = (this && this.__extends) || (function () {
-	var extendStatics = function (d, b) {
-		extendStatics = Object.setPrototypeOf ||
-			({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
-			function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
-		return extendStatics(d, b);
-	}
+	var extendStatics = Object.setPrototypeOf ||
+		({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+		function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
 	return function (d, b) {
 		extendStatics(d, b);
 		function __() { this.constructor = d; }
@@ -4267,15 +4264,29 @@ var spine;
 							continue;
 						}
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 					}
 					else if (side2) {
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 						output.push(inputX2);
 						output.push(inputY2);
 					}

spine-ts/build/spine-widget.d.ts

@@ -16,11 +16,11 @@ declare module spine {
 		setup = 0,
 		first = 1,
 		replace = 2,
-		add = 3
+		add = 3,
 	}
 	enum MixDirection {
 		in = 0,
-		out = 1
+		out = 1,
 	}
 	enum TimelineType {
 		rotate = 0,
@@ -37,7 +37,7 @@ declare module spine {
 		pathConstraintPosition = 11,
 		pathConstraintSpacing = 12,
 		pathConstraintMix = 13,
-		twoColor = 14
+		twoColor = 14,
 	}
 	abstract class CurveTimeline implements Timeline {
 		static LINEAR: number;
@@ -341,7 +341,7 @@ declare module spine {
 		end = 2,
 		dispose = 3,
 		complete = 4,
-		event = 5
+		event = 5,
 	}
 	interface AnimationStateListener2 {
 		start(entry: TrackEntry): void;
@@ -380,8 +380,8 @@ declare module spine {
 		private toLoad;
 		private loaded;
 		constructor(textureLoader: (image: HTMLImageElement) => any, pathPrefix?: string);
-		private static downloadText;
-		private static downloadBinary;
+		private static downloadText(url, success, error);
+		private static downloadBinary(url, success, error);
 		loadText(path: string, success?: (path: string, text: string) => void, error?: (path: string, error: string) => void): void;
 		loadTexture(path: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
 		loadTextureData(path: string, data: string, success?: (path: string, image: HTMLImageElement) => void, error?: (path: string, error: string) => void): void;
@@ -414,7 +414,7 @@ declare module spine {
 		Normal = 0,
 		Additive = 1,
 		Multiply = 2,
-		Screen = 3
+		Screen = 3,
 	}
 }
 declare module spine {
@@ -483,7 +483,7 @@ declare module spine {
 		OnlyTranslation = 1,
 		NoRotationOrReflection = 2,
 		NoScale = 3,
-		NoScaleOrReflection = 4
+		NoScaleOrReflection = 4,
 	}
 }
 declare module spine {
@@ -593,17 +593,17 @@ declare module spine {
 	}
 	enum PositionMode {
 		Fixed = 0,
-		Percent = 1
+		Percent = 1,
 	}
 	enum SpacingMode {
 		Length = 0,
 		Fixed = 1,
-		Percent = 2
+		Percent = 2,
 	}
 	enum RotateMode {
 		Tangent = 0,
 		Chain = 1,
-		ChainScale = 2
+		ChainScale = 2,
 	}
 }
 declare module spine {
@@ -614,12 +614,12 @@ declare module spine {
 		private rawAssets;
 		private errors;
 		constructor(pathPrefix?: string);
-		private queueAsset;
+		private queueAsset(clientId, textureLoader, path);
 		loadText(clientId: string, path: string): void;
 		loadJson(clientId: string, path: string): void;
 		loadTexture(clientId: string, textureLoader: (image: HTMLImageElement) => any, path: string): void;
 		get(clientId: string, path: string): any;
-		private updateClientAssets;
+		private updateClientAssets(clientAssets);
 		isLoadingComplete(clientId: string): boolean;
 		dispose(): void;
 		hasErrors(): boolean;
@@ -823,12 +823,12 @@ declare module spine {
 		MipMapNearestNearest = 9984,
 		MipMapLinearNearest = 9985,
 		MipMapNearestLinear = 9986,
-		MipMapLinearLinear = 9987
+		MipMapLinearLinear = 9987,
 	}
 	enum TextureWrap {
 		MirroredRepeat = 33648,
 		ClampToEdge = 33071,
-		Repeat = 10497
+		Repeat = 10497,
 	}
 	class TextureRegion {
 		renderObject: any;
@@ -855,7 +855,7 @@ declare module spine {
 		pages: TextureAtlasPage[];
 		regions: TextureAtlasRegion[];
 		constructor(atlasText: string, textureLoader: (path: string) => any);
-		private load;
+		private load(atlasText, textureLoader);
 		findRegion(name: string): TextureAtlasRegion;
 		dispose(): void;
 	}
@@ -931,9 +931,9 @@ declare module spine {
 		private polygonIndicesPool;
 		triangulate(verticesArray: ArrayLike<number>): Array<number>;
 		decompose(verticesArray: Array<number>, triangles: Array<number>): Array<Array<number>>;
-		private static isConcave;
-		private static positiveArea;
-		private static winding;
+		private static isConcave(index, vertexCount, vertices, indices);
+		private static positiveArea(p1x, p1y, p2x, p2y, p3x, p3y);
+		private static winding(p1x, p1y, p2x, p2y, p3x, p3y);
 	}
 }
 declare module spine {
@@ -1105,7 +1105,7 @@ declare module spine {
 		Mesh = 2,
 		LinkedMesh = 3,
 		Path = 4,
-		Point = 5
+		Point = 5,
 	}
 }
 declare module spine {
@@ -1299,7 +1299,7 @@ declare module spine.webgl {
 		touchesPool: Pool<Touch>;
 		private listeners;
 		constructor(element: HTMLElement);
-		private setupCallbacks;
+		private setupCallbacks(element);
 		addListener(listener: InputListener): void;
 		removeListener(listener: InputListener): void;
 	}
@@ -1408,7 +1408,7 @@ declare module spine.webgl {
 		drawWithOffset(shader: Shader, primitiveType: number, offset: number, count: number): void;
 		bind(shader: Shader): void;
 		unbind(shader: Shader): void;
-		private update;
+		private update();
 		restore(): void;
 		dispose(): void;
 	}
@@ -1434,7 +1434,7 @@ declare module spine.webgl {
 		constructor();
 	}
 	enum VertexAttributeType {
-		Float = 0
+		Float = 0,
 	}
 }
 declare module spine.webgl {
@@ -1453,7 +1453,7 @@ declare module spine.webgl {
 		begin(shader: Shader): void;
 		setBlendMode(srcBlend: number, dstBlend: number): void;
 		draw(texture: GLTexture, vertices: ArrayLike<number>, indices: Array<number>): void;
-		private flush;
+		private flush();
 		end(): void;
 		getDrawCalls(): number;
 		dispose(): void;
@@ -1493,13 +1493,13 @@ declare module spine.webgl {
 		curve(x1: number, y1: number, cx1: number, cy1: number, cx2: number, cy2: number, x2: number, y2: number, segments: number, color?: Color): void;
 		end(): void;
 		resize(resizeMode: ResizeMode): void;
-		private enableRenderer;
+		private enableRenderer(renderer);
 		dispose(): void;
 	}
 	enum ResizeMode {
 		Stretch = 0,
 		Expand = 1,
-		Fit = 2
+		Fit = 2,
 	}
 }
 declare module spine.webgl {
@@ -1527,9 +1527,9 @@ declare module spine.webgl {
 		getVertexShaderSource(): string;
 		getFragmentSource(): string;
 		constructor(context: ManagedWebGLRenderingContext | WebGLRenderingContext, vertexShader: string, fragmentShader: string);
-		private compile;
-		private compileShader;
-		private compileProgram;
+		private compile();
+		private compileShader(type, source);
+		private compileProgram(vs, fs);
 		restore(): void;
 		bind(): void;
 		unbind(): void;
@@ -1576,16 +1576,16 @@ declare module spine.webgl {
 		polygon(polygonVertices: ArrayLike<number>, offset: number, count: number, color?: Color): void;
 		circle(filled: boolean, x: number, y: number, radius: number, color?: Color, segments?: number): void;
 		curve(x1: number, y1: number, cx1: number, cy1: number, cx2: number, cy2: number, x2: number, y2: number, segments: number, color?: Color): void;
-		private vertex;
+		private vertex(x, y, color);
 		end(): void;
-		private flush;
-		private check;
+		private flush();
+		private check(shapeType, numVertices);
 		dispose(): void;
 	}
 	enum ShapeType {
 		Point = 0,
 		Line = 1,
-		Filled = 4
+		Filled = 4,
 	}
 }
 declare module spine.webgl {
@@ -1780,11 +1780,11 @@ declare module spine {
 		scale(sourceWidth: number, sourceHeight: number, targetWidth: number, targetHeight: number): Vector2;
 		loadSkeleton(): void;
 		setupInput(): void;
-		private play;
-		private pause;
-		private setAnimation;
-		private percentageToWorldUnit;
-		private calculateAnimationViewport;
+		private play();
+		private pause();
+		private setAnimation(animation);
+		private percentageToWorldUnit(size, percentageOrAbsolute);
+		private calculateAnimationViewport(animationName);
 	}
 }
 declare module spine {
@@ -1808,10 +1808,10 @@ declare module spine {
 		private loaded;
 		private bounds;
 		constructor(element: HTMLElement | string, config: SpineWidgetConfig);
-		private validateConfig;
-		private load;
-		private render;
-		private resize;
+		private validateConfig(config);
+		private load();
+		private render();
+		private resize();
 		pause(): void;
 		play(): void;
 		isPlaying(): boolean;
@@ -1819,7 +1819,7 @@ declare module spine {
 		static loadWidgets(): void;
 		static loadWidget(widget: HTMLElement): void;
 		static pageLoaded: boolean;
-		private static ready;
+		private static ready();
 		static setupDOMListener(): void;
 	}
 	class SpineWidgetConfig {

spine-ts/build/spine-widget.js

@@ -1,10 +1,7 @@
 var __extends = (this && this.__extends) || (function () {
-	var extendStatics = function (d, b) {
-		extendStatics = Object.setPrototypeOf ||
-			({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
-			function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
-		return extendStatics(d, b);
-	}
+	var extendStatics = Object.setPrototypeOf ||
+		({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+		function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
 	return function (d, b) {
 		extendStatics(d, b);
 		function __() { this.constructor = d; }
@@ -4267,15 +4264,29 @@ var spine;
 							continue;
 						}
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 					}
 					else if (side2) {
 						var c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						var s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							var ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						}
+						else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 						output.push(inputX2);
 						output.push(inputY2);
 					}

spine-ts/core/src/SkeletonClipping.ts

@@ -270,14 +270,26 @@ module spine {
 						}
 						// v1 inside, v2 outside
 						let c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						let ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						let s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							let ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						} else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 					} else if (side2) { // v1 outside, v2 inside
 						let c0 = inputY2 - inputY, c2 = inputX2 - inputX;
-						let ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / (c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY));
-						output.push(edgeX + (edgeX2 - edgeX) * ua);
-						output.push(edgeY + (edgeY2 - edgeY) * ua);
+						let s = c0 * (edgeX2 - edgeX) - c2 * (edgeY2 - edgeY);
+						if (Math.abs(s) > 0.000001) {
+							let ua = (c2 * (edgeY - inputY) - c0 * (edgeX - inputX)) / s;
+							output.push(edgeX + (edgeX2 - edgeX) * ua);
+							output.push(edgeY + (edgeY2 - edgeY) * ua);
+						} else {
+							output.push(edgeX);
+							output.push(edgeY);
+						}
 						output.push(inputX2);
 						output.push(inputY2);
 					}