[ts] Fix PathConstraint length spacing for zero length bones. See #1023.

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

@@ -752,6 +752,7 @@ declare module spine {
 		static NONE: number;
 		static BEFORE: number;
 		static AFTER: number;
+		static epsilon: number;
 		data: PathConstraintData;
 		bones: Array<Bone>;
 		target: Slot;

spine-ts/build/spine-all.js

@@ -3290,13 +3290,18 @@ var spine;
 				for (var i = 0, n = spacesCount - 1; i < n;) {
 					var bone = bones[i];
 					var setupLength = bone.data.length;
-					if (setupLength == 0)
-						setupLength = 0.0000001;
-					var x = setupLength * bone.a, y = setupLength * bone.c;
-					var length_1 = Math.sqrt(x * x + y * y);
-					if (scale)
-						lengths[i] = length_1;
-					spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					if (setupLength < PathConstraint.epsilon) {
+						if (scale)
+							lengths[i] = 0;
+						spaces[++i] = 0;
+					}
+					else {
+						var x = setupLength * bone.a, y = setupLength * bone.c;
+						var length_1 = Math.sqrt(x * x + y * y);
+						if (scale)
+							lengths[i] = length_1;
+						spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					}
 				}
 			}
 			else {
@@ -3602,6 +3607,7 @@ var spine;
 		PathConstraint.NONE = -1;
 		PathConstraint.BEFORE = -2;
 		PathConstraint.AFTER = -3;
+		PathConstraint.epsilon = 0.00001;
 		return PathConstraint;
 	}());
 	spine.PathConstraint = PathConstraint;

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

@@ -752,6 +752,7 @@ declare module spine {
 		static NONE: number;
 		static BEFORE: number;
 		static AFTER: number;
+		static epsilon: number;
 		data: PathConstraintData;
 		bones: Array<Bone>;
 		target: Slot;

spine-ts/build/spine-canvas.js

@@ -3290,13 +3290,18 @@ var spine;
 				for (var i = 0, n = spacesCount - 1; i < n;) {
 					var bone = bones[i];
 					var setupLength = bone.data.length;
-					if (setupLength == 0)
-						setupLength = 0.0000001;
-					var x = setupLength * bone.a, y = setupLength * bone.c;
-					var length_1 = Math.sqrt(x * x + y * y);
-					if (scale)
-						lengths[i] = length_1;
-					spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					if (setupLength < PathConstraint.epsilon) {
+						if (scale)
+							lengths[i] = 0;
+						spaces[++i] = 0;
+					}
+					else {
+						var x = setupLength * bone.a, y = setupLength * bone.c;
+						var length_1 = Math.sqrt(x * x + y * y);
+						if (scale)
+							lengths[i] = length_1;
+						spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					}
 				}
 			}
 			else {
@@ -3602,6 +3607,7 @@ var spine;
 		PathConstraint.NONE = -1;
 		PathConstraint.BEFORE = -2;
 		PathConstraint.AFTER = -3;
+		PathConstraint.epsilon = 0.00001;
 		return PathConstraint;
 	}());
 	spine.PathConstraint = PathConstraint;

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

@@ -681,6 +681,7 @@ declare module spine {
 		static NONE: number;
 		static BEFORE: number;
 		static AFTER: number;
+		static epsilon: number;
 		data: PathConstraintData;
 		bones: Array<Bone>;
 		target: Slot;

spine-ts/build/spine-core.js

@@ -2969,13 +2969,18 @@ var spine;
 				for (var i = 0, n = spacesCount - 1; i < n;) {
 					var bone = bones[i];
 					var setupLength = bone.data.length;
-					if (setupLength == 0)
-						setupLength = 0.0000001;
-					var x = setupLength * bone.a, y = setupLength * bone.c;
-					var length_1 = Math.sqrt(x * x + y * y);
-					if (scale)
-						lengths[i] = length_1;
-					spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					if (setupLength < PathConstraint.epsilon) {
+						if (scale)
+							lengths[i] = 0;
+						spaces[++i] = 0;
+					}
+					else {
+						var x = setupLength * bone.a, y = setupLength * bone.c;
+						var length_1 = Math.sqrt(x * x + y * y);
+						if (scale)
+							lengths[i] = length_1;
+						spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					}
 				}
 			}
 			else {
@@ -3281,6 +3286,7 @@ var spine;
 		PathConstraint.NONE = -1;
 		PathConstraint.BEFORE = -2;
 		PathConstraint.AFTER = -3;
+		PathConstraint.epsilon = 0.00001;
 		return PathConstraint;
 	}());
 	spine.PathConstraint = PathConstraint;

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

@@ -681,6 +681,7 @@ declare module spine {
 		static NONE: number;
 		static BEFORE: number;
 		static AFTER: number;
+		static epsilon: number;
 		data: PathConstraintData;
 		bones: Array<Bone>;
 		target: Slot;

spine-ts/build/spine-threejs.js

@@ -2969,13 +2969,18 @@ var spine;
 				for (var i = 0, n = spacesCount - 1; i < n;) {
 					var bone = bones[i];
 					var setupLength = bone.data.length;
-					if (setupLength == 0)
-						setupLength = 0.0000001;
-					var x = setupLength * bone.a, y = setupLength * bone.c;
-					var length_1 = Math.sqrt(x * x + y * y);
-					if (scale)
-						lengths[i] = length_1;
-					spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					if (setupLength < PathConstraint.epsilon) {
+						if (scale)
+							lengths[i] = 0;
+						spaces[++i] = 0;
+					}
+					else {
+						var x = setupLength * bone.a, y = setupLength * bone.c;
+						var length_1 = Math.sqrt(x * x + y * y);
+						if (scale)
+							lengths[i] = length_1;
+						spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					}
 				}
 			}
 			else {
@@ -3281,6 +3286,7 @@ var spine;
 		PathConstraint.NONE = -1;
 		PathConstraint.BEFORE = -2;
 		PathConstraint.AFTER = -3;
+		PathConstraint.epsilon = 0.00001;
 		return PathConstraint;
 	}());
 	spine.PathConstraint = PathConstraint;

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

@@ -681,6 +681,7 @@ declare module spine {
 		static NONE: number;
 		static BEFORE: number;
 		static AFTER: number;
+		static epsilon: number;
 		data: PathConstraintData;
 		bones: Array<Bone>;
 		target: Slot;

spine-ts/build/spine-webgl.js

@@ -2969,13 +2969,18 @@ var spine;
 				for (var i = 0, n = spacesCount - 1; i < n;) {
 					var bone = bones[i];
 					var setupLength = bone.data.length;
-					if (setupLength == 0)
-						setupLength = 0.0000001;
-					var x = setupLength * bone.a, y = setupLength * bone.c;
-					var length_1 = Math.sqrt(x * x + y * y);
-					if (scale)
-						lengths[i] = length_1;
-					spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					if (setupLength < PathConstraint.epsilon) {
+						if (scale)
+							lengths[i] = 0;
+						spaces[++i] = 0;
+					}
+					else {
+						var x = setupLength * bone.a, y = setupLength * bone.c;
+						var length_1 = Math.sqrt(x * x + y * y);
+						if (scale)
+							lengths[i] = length_1;
+						spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					}
 				}
 			}
 			else {
@@ -3281,6 +3286,7 @@ var spine;
 		PathConstraint.NONE = -1;
 		PathConstraint.BEFORE = -2;
 		PathConstraint.AFTER = -3;
+		PathConstraint.epsilon = 0.00001;
 		return PathConstraint;
 	}());
 	spine.PathConstraint = PathConstraint;

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

@@ -681,6 +681,7 @@ declare module spine {
 		static NONE: number;
 		static BEFORE: number;
 		static AFTER: number;
+		static epsilon: number;
 		data: PathConstraintData;
 		bones: Array<Bone>;
 		target: Slot;

spine-ts/build/spine-widget.js

@@ -2969,13 +2969,18 @@ var spine;
 				for (var i = 0, n = spacesCount - 1; i < n;) {
 					var bone = bones[i];
 					var setupLength = bone.data.length;
-					if (setupLength == 0)
-						setupLength = 0.0000001;
-					var x = setupLength * bone.a, y = setupLength * bone.c;
-					var length_1 = Math.sqrt(x * x + y * y);
-					if (scale)
-						lengths[i] = length_1;
-					spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					if (setupLength < PathConstraint.epsilon) {
+						if (scale)
+							lengths[i] = 0;
+						spaces[++i] = 0;
+					}
+					else {
+						var x = setupLength * bone.a, y = setupLength * bone.c;
+						var length_1 = Math.sqrt(x * x + y * y);
+						if (scale)
+							lengths[i] = length_1;
+						spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length_1 / setupLength;
+					}
 				}
 			}
 			else {
@@ -3281,6 +3286,7 @@ var spine;
 		PathConstraint.NONE = -1;
 		PathConstraint.BEFORE = -2;
 		PathConstraint.AFTER = -3;
+		PathConstraint.epsilon = 0.00001;
 		return PathConstraint;
 	}());
 	spine.PathConstraint = PathConstraint;

spine-ts/core/src/PathConstraint.ts

@@ -31,6 +31,7 @@
 module spine {
 	export class PathConstraint implements Constraint {
 		static NONE = -1; static BEFORE = -2; static AFTER = -3;
+		static epsilon = 0.00001;
 
 		data: PathConstraintData;
 		bones: Array<Bone>;
@@ -81,11 +82,15 @@ module spine {
 				for (let i = 0, n = spacesCount - 1; i < n;) {
 					let bone = bones[i];
 					let setupLength = bone.data.length;
-					if (setupLength == 0) setupLength = 0.0000001;
-					let x = setupLength * bone.a, y = setupLength * bone.c;
-					let length = Math.sqrt(x * x + y * y);
-					if (scale) lengths[i] = length;
-					spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length / setupLength;
+					if (setupLength < PathConstraint.epsilon) {
+						if (scale) lengths[i] = 0;
+						spaces[++i] = 0;
+					} else {
+						let x = setupLength * bone.a, y = setupLength * bone.c;
+						let length = Math.sqrt(x * x + y * y);
+						if (scale) lengths[i] = length;
+						spaces[++i] = (lengthSpacing ? setupLength + spacing : spacing) * length / setupLength;
+					}										
 				}
 			} else {
 				for (let i = 1; i < spacesCount; i++)