public Animation (String name, ExposedList<Timeline> timelines, float duration) {
			if (name == null) throw new ArgumentNullException("name", "name cannot be null.");
			if (timelines == null) throw new ArgumentNullException("timelines", "timelines cannot be null.");
			this.name = name;
			this.timelines = timelines;
			this.duration = duration;
		}

		public Skeleton (SkeletonData data) {
			if (data == null) throw new ArgumentNullException("data cannot be null.");
			this.data = data;

			bones = new ExposedList<Bone>(data.bones.Count);
			foreach (BoneData boneData in data.bones) {
				Bone parent = boneData.parent == null ? null : bones.Items[data.bones.IndexOf(boneData.parent)];
				Bone bone = new Bone(boneData, this, parent);
				if (parent != null) parent.children.Add(bone);
				bones.Add(bone);
			}

			slots = new ExposedList<Slot>(data.slots.Count);
			drawOrder = new ExposedList<Slot>(data.slots.Count);
			foreach (SlotData slotData in data.slots) {
				Bone bone = bones.Items[data.bones.IndexOf(slotData.boneData)];
				Slot slot = new Slot(slotData, bone);
				slots.Add(slot);
				drawOrder.Add(slot);
			}

			ikConstraints = new ExposedList<IkConstraint>(data.ikConstraints.Count);
			foreach (IkConstraintData ikConstraintData in data.ikConstraints)
				ikConstraints.Add(new IkConstraint(ikConstraintData, this));

			transformConstraints = new ExposedList<TransformConstraint>(data.transformConstraints.Count);
			foreach (TransformConstraintData transformConstraintData in data.transformConstraints)
				transformConstraints.Add(new TransformConstraint(transformConstraintData, this));

			UpdateCache();
			UpdateWorldTransform();
		}

		/// <summary>Applies all the animation's timelines to the specified skeleton.</summary>
		/// <param name="skeleton">The skeleton to be posed.</param>
		/// <param name="lastTime">The last time the animation was applied.</param>
		/// <param name="time">The point in time in the animation to apply to the skeleton.</param>
		/// <param name="loop">If true, time wraps within the animation duration.</param>
		/// <param name="events">Any triggered events are added. May be null.</param>
		/// <param name="alpha">The percentage between this animation's pose and the current pose.</param>
		/// <param name="setupPose">If true, the animation is mixed with the setup pose, else it is mixed with the current pose. Passing true when alpha is 1 is slightly more efficient.</param>
		/// <param name="mixingOut">True when mixing over time toward the setup or current pose, false when mixing toward the keyed pose. Irrelevant when alpha is 1.</param>
		/// <seealso cref="Timeline.Apply(Skeleton, float, float, ExposedList, float, bool, bool)"/>
		public void Apply (Skeleton skeleton, float lastTime, float time, bool loop, ExposedList<Event> events, float alpha, bool setupPose, bool mixingOut) {
			if (skeleton == null) throw new ArgumentNullException("skeleton", "skeleton cannot be null.");

			if (loop && duration != 0) {
				time %= duration;
				if (lastTime > 0) lastTime %= duration;
			}

			ExposedList<Timeline> timelines = this.timelines;
			for (int i = 0, n = timelines.Count; i < n; i++)
				timelines.Items[i].Apply(skeleton, lastTime, time, events, alpha, setupPose, mixingOut);
		}

		public IkConstraint (IkConstraintData data, Skeleton skeleton) {
			if (data == null) throw new ArgumentNullException("data cannot be null.");
			if (skeleton == null) throw new ArgumentNullException("skeleton cannot be null.");
			this.data = data;
			mix = data.mix;
			bendDirection = data.bendDirection;

			bones = new ExposedList<Bone>(data.bones.Count);
			foreach (BoneData boneData in data.bones)
				bones.Add(skeleton.FindBone(boneData.name));
			target = skeleton.FindBone(data.target.name);
		}

		public PathConstraint (PathConstraintData data, Skeleton skeleton) {
			if (data == null) throw new ArgumentNullException("data", "data cannot be null.");
			if (skeleton == null) throw new ArgumentNullException("skeleton", "skeleton cannot be null.");
			this.data = data;
			bones = new ExposedList<Bone>(data.Bones.Count);
			foreach (BoneData boneData in data.bones)
				bones.Add(skeleton.FindBone(boneData.name));
			target = skeleton.FindSlot(data.target.name);
			position = data.position;
			spacing = data.spacing;
			rotateMix = data.rotateMix;
			translateMix = data.translateMix;
		}

		public TransformConstraint (TransformConstraintData data, Skeleton skeleton) {
			if (data == null) throw new ArgumentNullException("data", "data cannot be null.");
			if (skeleton == null) throw new ArgumentNullException("skeleton", "skeleton cannot be null.");
			this.data = data;
			rotateMix = data.rotateMix;
			translateMix = data.translateMix;
			scaleMix = data.scaleMix;
			shearMix = data.shearMix;

			bones = new ExposedList<Bone>();
			foreach (BoneData boneData in data.bones)
				bones.Add (skeleton.FindBone (boneData.name));
			
			target = skeleton.FindBone(data.target.name);
		}

		private void ReadAnimation (Dictionary<String, Object> map, String name, SkeletonData skeletonData) {
			var scale = this.Scale;
			var timelines = new ExposedList<Timeline>();
			float duration = 0;

			// Slot timelines.
			if (map.ContainsKey("slots")) {
				foreach (KeyValuePair<String, Object> entry in (Dictionary<String, Object>)map["slots"]) {
					String slotName = entry.Key;
					int slotIndex = skeletonData.FindSlotIndex(slotName);
					var timelineMap = (Dictionary<String, Object>)entry.Value;
					foreach (KeyValuePair<String, Object> timelineEntry in timelineMap) {
						var values = (List<Object>)timelineEntry.Value;
						var timelineName = (String)timelineEntry.Key;
						if (timelineName == "color") {
							var timeline = new ColorTimeline(values.Count);
							timeline.slotIndex = slotIndex;

							int frameIndex = 0;
							foreach (Dictionary<String, Object> valueMap in values) {
								float time = (float)valueMap["time"];
								String c = (String)valueMap["color"];
								timeline.SetFrame(frameIndex, time, ToColor(c, 0), ToColor(c, 1), ToColor(c, 2), ToColor(c, 3));
								ReadCurve(valueMap, timeline, frameIndex);
								frameIndex++;
							}
							timelines.Add(timeline);
							duration = Math.Max(duration, timeline.frames[(timeline.FrameCount - 1) * ColorTimeline.ENTRIES]);

						} else if (timelineName == "attachment") {
							var timeline = new AttachmentTimeline(values.Count);
							timeline.slotIndex = slotIndex;

							int frameIndex = 0;
							foreach (Dictionary<String, Object> valueMap in values) {
								float time = (float)valueMap["time"];
								timeline.SetFrame(frameIndex++, time, (String)valueMap["name"]);
							}
							timelines.Add(timeline);
							duration = Math.Max(duration, timeline.frames[timeline.FrameCount - 1]);

						} else
							throw new Exception("Invalid timeline type for a slot: " + timelineName + " (" + slotName + ")");
					}
				}
			}

			// Bone timelines.
			if (map.ContainsKey("bones")) {
				foreach (KeyValuePair<String, Object> entry in (Dictionary<String, Object>)map["bones"]) {
					String boneName = entry.Key;
					int boneIndex = skeletonData.FindBoneIndex(boneName);
					if (boneIndex == -1) throw new Exception("Bone not found: " + boneName);
					var timelineMap = (Dictionary<String, Object>)entry.Value;
					foreach (KeyValuePair<String, Object> timelineEntry in timelineMap) {
						var values = (List<Object>)timelineEntry.Value;
						var timelineName = (String)timelineEntry.Key;
						if (timelineName == "rotate") {
							var timeline = new RotateTimeline(values.Count);
							timeline.boneIndex = boneIndex;

							int frameIndex = 0;
							foreach (Dictionary<String, Object> valueMap in values) {
								timeline.SetFrame(frameIndex, (float)valueMap["time"], (float)valueMap["angle"]);
								ReadCurve(valueMap, timeline, frameIndex);
								frameIndex++;
							}
							timelines.Add(timeline);
							duration = Math.Max(duration, timeline.frames[(timeline.FrameCount - 1) * RotateTimeline.ENTRIES]);

						} else if (timelineName == "translate" || timelineName == "scale" || timelineName == "shear") {
							TranslateTimeline timeline;
							float timelineScale = 1;
							if (timelineName == "scale")
								timeline = new ScaleTimeline(values.Count);
							else if (timelineName == "shear")
								timeline = new ShearTimeline(values.Count);
							else {
								timeline = new TranslateTimeline(values.Count);
								timelineScale = scale;
							}
							timeline.boneIndex = boneIndex;

							int frameIndex = 0;
							foreach (Dictionary<String, Object> valueMap in values) {
								float time = (float)valueMap["time"];
								float x = GetFloat(valueMap, "x", 0);
								float y = GetFloat(valueMap, "y", 0);
								timeline.SetFrame(frameIndex, time, x * timelineScale, y * timelineScale);
								ReadCurve(valueMap, timeline, frameIndex);
								frameIndex++;
							}
							timelines.Add(timeline);
							duration = Math.Max(duration, timeline.frames[(timeline.FrameCount - 1) * TranslateTimeline.ENTRIES]);

						} else
							throw new Exception("Invalid timeline type for a bone: " + timelineName + " (" + boneName + ")");
					}
				}
			}
//.........这里部分代码省略.........

		private void ReadVertices (Dictionary<String, Object> map, VertexAttachment attachment, int verticesLength) {
			attachment.WorldVerticesLength = verticesLength;
			float[] vertices = GetFloatArray(map, "vertices", 1);
			float scale = Scale;
			if (verticesLength == vertices.Length) {
				if (scale != 1) {
					for (int i = 0; i < vertices.Length; i++) {
						vertices[i] *= scale;
					}
				}
				attachment.vertices = vertices;
				return;
			}
			ExposedList<float> weights = new ExposedList<float>(verticesLength * 3 * 3);
			ExposedList<int> bones = new ExposedList<int>(verticesLength * 3);
			for (int i = 0, n = vertices.Length; i < n;) {
				int boneCount = (int)vertices[i++];
				bones.Add(boneCount);
				for (int nn = i + boneCount * 4; i < nn; i += 4) {
					bones.Add((int)vertices[i]);
					weights.Add(vertices[i + 1] * this.Scale);
					weights.Add(vertices[i + 2] * this.Scale);
					weights.Add(vertices[i + 3]);
				}
			}
			attachment.bones = bones.ToArray();
			attachment.vertices = weights.ToArray();
		}

		private void ReadAnimation (String name, Dictionary<String, Object> map, SkeletonData skeletonData) {
			var timelines = new ExposedList<Timeline>();
			float duration = 0;
			float scale = Scale;

			if (map.ContainsKey("slots")) {
				foreach (KeyValuePair<String, Object> entry in (Dictionary<String, Object>)map["slots"]) {
					String slotName = entry.Key;
					int slotIndex = skeletonData.FindSlotIndex(slotName);
					var timelineMap = (Dictionary<String, Object>)entry.Value;

					foreach (KeyValuePair<String, Object> timelineEntry in timelineMap) {
						var values = (List<Object>)timelineEntry.Value;
						var timelineName = (String)timelineEntry.Key;
						if (timelineName == "color") {
							var timeline = new ColorTimeline(values.Count);
							timeline.slotIndex = slotIndex;

							int frameIndex = 0;
							foreach (Dictionary<String, Object> valueMap in values) {
								float time = (float)valueMap["time"];
								String c = (String)valueMap["color"];
								timeline.SetFrame(frameIndex, time, ToColor(c, 0), ToColor(c, 1), ToColor(c, 2), ToColor(c, 3));
								ReadCurve(timeline, frameIndex, valueMap);
								frameIndex++;
							}
							timelines.Add(timeline);
							duration = Math.Max(duration, timeline.frames[timeline.FrameCount * 5 - 5]);

						} else if (timelineName == "attachment") {
							var timeline = new AttachmentTimeline(values.Count);
							timeline.slotIndex = slotIndex;

							int frameIndex = 0;
							foreach (Dictionary<String, Object> valueMap in values) {
								float time = (float)valueMap["time"];
								timeline.SetFrame(frameIndex++, time, (String)valueMap["name"]);
							}
							timelines.Add(timeline);
							duration = Math.Max(duration, timeline.frames[timeline.FrameCount - 1]);

						} else
							throw new Exception("Invalid timeline type for a slot: " + timelineName + " (" + slotName + ")");
					}
				}
			}

			if (map.ContainsKey("bones")) {
				foreach (KeyValuePair<String, Object> entry in (Dictionary<String, Object>)map["bones"]) {
					String boneName = entry.Key;
					int boneIndex = skeletonData.FindBoneIndex(boneName);
					if (boneIndex == -1)
						throw new Exception("Bone not found: " + boneName);

					var timelineMap = (Dictionary<String, Object>)entry.Value;
					foreach (KeyValuePair<String, Object> timelineEntry in timelineMap) {
						var values = (List<Object>)timelineEntry.Value;
						var timelineName = (String)timelineEntry.Key;
						if (timelineName == "rotate") {
							var timeline = new RotateTimeline(values.Count);
							timeline.boneIndex = boneIndex;

							int frameIndex = 0;
							foreach (Dictionary<String, Object> valueMap in values) {
								float time = (float)valueMap["time"];
								timeline.SetFrame(frameIndex, time, (float)valueMap["angle"]);
								ReadCurve(timeline, frameIndex, valueMap);
								frameIndex++;
							}
							timelines.Add(timeline);
							duration = Math.Max(duration, timeline.frames[timeline.FrameCount * 2 - 2]);

						} else if (timelineName == "translate" || timelineName == "scale") {
							TranslateTimeline timeline;
							float timelineScale = 1;
							if (timelineName == "scale")
								timeline = new ScaleTimeline(values.Count);
							else {
								timeline = new TranslateTimeline(values.Count);
								timelineScale = scale;
							}
							timeline.boneIndex = boneIndex;

							int frameIndex = 0;
							foreach (Dictionary<String, Object> valueMap in values) {
								float time = (float)valueMap["time"];
								float x = valueMap.ContainsKey("x") ? (float)valueMap["x"] : 0;
								float y = valueMap.ContainsKey("y") ? (float)valueMap["y"] : 0;
								timeline.SetFrame(frameIndex, time, (float)x * timelineScale, (float)y * timelineScale);
								ReadCurve(timeline, frameIndex, valueMap);
								frameIndex++;
							}
							timelines.Add(timeline);
							duration = Math.Max(duration, timeline.frames[timeline.FrameCount * 3 - 3]);

						} else
							throw new Exception("Invalid timeline type for a bone: " + timelineName + " (" + boneName + ")");
					}
				}
			}
//.........这里部分代码省略.........

		public static bool EnsureTriangleBuffersSize (ExposedList<SubmeshTriangleBuffer> submeshBuffers, int targetSubmeshCount, SubmeshInstruction[] instructionItems) {
			bool submeshBuffersWasResized = submeshBuffers.Count < targetSubmeshCount;
			if (submeshBuffersWasResized) {
				submeshBuffers.GrowIfNeeded(targetSubmeshCount - submeshBuffers.Count);
				for (int i = submeshBuffers.Count; submeshBuffers.Count < targetSubmeshCount; i++)
					submeshBuffers.Add(new SubmeshTriangleBuffer(instructionItems[i].triangleCount));
			}
			return submeshBuffersWasResized;
		}

            public bool StructureDoesntMatch(ExposedList<Attachment> attachments, ExposedList<SubmeshInstruction> instructions)
            {
                // Check count inequality.
                if (attachments.Count != this.attachmentsUsed.Count) return true;
                if (instructions.Count != this.instructionsUsed.Count) return true;

                // Check each attachment.
                var attachmentsPassed = attachments.Items;
                var myAttachments = this.attachmentsUsed.Items;
                for (int i = 0, n = attachmentsUsed.Count; i < n; i++)
                    if (attachmentsPassed[i] != myAttachments[i]) return true;

                // Check each submesh for equal arrangement.
                var instructionListItems = instructions.Items;
                var myInstructions = this.instructionsUsed.Items;
                for (int i = 0, n = this.instructionsUsed.Count; i < n; i++) {
                    var lhs = instructionListItems[i];
                    var rhs = myInstructions[i];
                    if (
                        lhs.material.GetInstanceID() != rhs.material.GetInstanceID() ||
                        lhs.startSlot != rhs.startSlot ||
                        lhs.endSlot != rhs.endSlot ||
                        lhs.triangleCount != rhs.triangleCount ||
                        lhs.vertexCount != rhs.vertexCount ||
                        lhs.firstVertexIndex != rhs.firstVertexIndex
                    ) return true;
                }

                return false;
            }

        public MeshAndMaterials GenerateMesh(ExposedList<SubmeshInstruction> instructions, int startSubmesh, int endSubmesh)
        {
            // STEP 0: Prepare instructions.
            var paramItems = instructions.Items;
            currentInstructions.Clear(false);
            for (int i = startSubmesh, n = endSubmesh; i < n; i++) {
                this.currentInstructions.Add(paramItems[i]);
            }
            var smartMesh = doubleBufferedSmartMesh.GetNext();
            var mesh = smartMesh.mesh;
            int submeshCount = currentInstructions.Count;
            var currentInstructionsItems = currentInstructions.Items;
            int vertexCount = 0;
            for (int i = 0; i < submeshCount; i++) {
                currentInstructionsItems[i].firstVertexIndex = vertexCount;// Ensure current instructions have correct cached values.
                vertexCount += currentInstructionsItems[i].vertexCount; // vertexCount will also be used for the rest of this method.
            }

            // STEP 1: Ensure correct buffer sizes.
            bool vertBufferResized = ArraysMeshGenerator.EnsureSize(vertexCount, ref this.meshVertices, ref this.meshUVs, ref this.meshColors32);
            bool submeshBuffersResized = ArraysMeshGenerator.EnsureTriangleBuffersSize(submeshBuffers, submeshCount, currentInstructionsItems);

            // STEP 2: Update buffers based on Skeleton.

            // Initial values for manual Mesh Bounds calculation
            Vector3 meshBoundsMin;
            Vector3 meshBoundsMax;
            float zSpacing = this.ZSpacing;
            if (vertexCount <= 0) {
                meshBoundsMin = new Vector3(0, 0, 0);
                meshBoundsMax = new Vector3(0, 0, 0);
            } else {
                meshBoundsMin.x = int.MaxValue;
                meshBoundsMin.y = int.MaxValue;
                meshBoundsMax.x = int.MinValue;
                meshBoundsMax.y = int.MinValue;

                int endSlot = currentInstructionsItems[submeshCount - 1].endSlot;
                if (zSpacing > 0f) {
                    meshBoundsMin.z = 0f;
                    meshBoundsMax.z = zSpacing * endSlot;
                } else {
                    meshBoundsMin.z = zSpacing * endSlot;
                    meshBoundsMax.z = 0f;
                }
            }

            // For each submesh, add vertex data from attachments.
            var workingAttachments = this.attachmentBuffer;
            workingAttachments.Clear(false);
            int vertexIndex = 0; // modified by FillVerts
            for (int submeshIndex = 0; submeshIndex < submeshCount; submeshIndex++) {
                var currentInstruction = currentInstructionsItems[submeshIndex];
                int startSlot = currentInstruction.startSlot;
                int endSlot = currentInstruction.endSlot;
                var skeleton = currentInstruction.skeleton;
                var skeletonDrawOrderItems = skeleton.DrawOrder.Items;
                for (int i = startSlot; i < endSlot; i++) {
                    var ca = skeletonDrawOrderItems[i].attachment;
                    if (ca != null) workingAttachments.Add(ca); // Includes BoundingBoxes. This is ok.
                }
                ArraysMeshGenerator.FillVerts(skeleton, startSlot, endSlot, zSpacing, this.PremultiplyVertexColors, this.meshVertices, this.meshUVs, this.meshColors32, ref vertexIndex, ref this.attachmentVertexBuffer, ref meshBoundsMin, ref meshBoundsMax);
            }

            bool structureDoesntMatch = vertBufferResized || submeshBuffersResized || smartMesh.StructureDoesntMatch(workingAttachments, currentInstructions);
            for (int submeshIndex = 0; submeshIndex < submeshCount; submeshIndex++) {
                var currentInstruction = currentInstructionsItems[submeshIndex];
                if (structureDoesntMatch) {
                    var currentBuffer = submeshBuffers.Items[submeshIndex];
                    bool isLastSubmesh = (submeshIndex == submeshCount - 1);
                    ArraysMeshGenerator.FillTriangles(ref currentBuffer.triangles, currentInstruction.skeleton, currentInstruction.triangleCount, currentInstruction.firstVertexIndex, currentInstruction.startSlot, currentInstruction.endSlot, isLastSubmesh);
                    currentBuffer.triangleCount = currentInstruction.triangleCount;
                    currentBuffer.firstVertex = currentInstruction.firstVertexIndex;
                }
            }

            if (structureDoesntMatch) {
                mesh.Clear();
                this.sharedMaterials = currentInstructions.GetUpdatedMaterialArray(this.sharedMaterials);
            }

            // STEP 3: Assign the buffers into the Mesh.
            smartMesh.Set(this.meshVertices, this.meshUVs, this.meshColors32, workingAttachments, currentInstructions);
            mesh.bounds = ArraysMeshGenerator.ToBounds(meshBoundsMin, meshBoundsMax);

            if (structureDoesntMatch) {
                // Push new triangles if doesn't match.
                mesh.subMeshCount = submeshCount;
                for (int i = 0; i < submeshCount; i++)
                    mesh.SetTriangles(submeshBuffers.Items[i].triangles, i);

                this.TryAddNormalsTo(mesh, vertexCount);
            }

            if (addTangents) {
                SolveTangents2DEnsureSize(ref this.meshTangents, ref this.tempTanBuffer, vertexCount);

                for (int i = 0, n = submeshCount; i < n; i++) {
                    var submesh = submeshBuffers.Items[i];
                    SolveTangents2DTriangles(this.tempTanBuffer, submesh.triangles, submesh.triangleCount, meshVertices, meshUVs, vertexCount);
//.........这里部分代码省略.........

	private bool CheckIfMustUpdateMeshStructure (ExposedList<int> attachmentsTriangleCountTemp, ExposedList<bool> attachmentsFlipStateTemp, ExposedList<LastState.AddSubmeshArguments> addSubmeshArgumentsTemp) {
		// Check if any mesh settings were changed
		bool mustUpdateMeshStructure =
			immutableTriangles != (useMesh1 ? lastState.immutableTrianglesMesh1 : lastState.immutableTrianglesMesh2);
#if UNITY_EDITOR
		mustUpdateMeshStructure |= !Application.isPlaying;
#endif

		if (mustUpdateMeshStructure)
			return true;

		// Check if any attachments were enabled/disabled
		// or submesh structures has changed
		ExposedList<int> attachmentsTriangleCountCurrentMesh;
		ExposedList<bool> attachmentsFlipStateCurrentMesh;
		ExposedList<LastState.AddSubmeshArguments> addSubmeshArgumentsCurrentMesh;
		if (useMesh1) {
			attachmentsTriangleCountCurrentMesh = lastState.attachmentsTriangleCountMesh1;
			addSubmeshArgumentsCurrentMesh = lastState.addSubmeshArgumentsMesh1;
			attachmentsFlipStateCurrentMesh = lastState.attachmentsFlipStateMesh1;
		} else {
			attachmentsTriangleCountCurrentMesh = lastState.attachmentsTriangleCountMesh2;
			addSubmeshArgumentsCurrentMesh = lastState.addSubmeshArgumentsMesh2;
			attachmentsFlipStateCurrentMesh = lastState.attachmentsFlipStateMesh2;
		}

		// Check attachments
		int attachmentCount = attachmentsTriangleCountTemp.Count;
		if (attachmentsTriangleCountCurrentMesh.Count != attachmentCount)
			return true;

		for (int i = 0; i < attachmentCount; i++) {
			if (attachmentsTriangleCountCurrentMesh.Items[i] != attachmentsTriangleCountTemp.Items[i])
				return true;
		}

		// Check flip state
		for (int i = 0; i < attachmentCount; i++) {
			if (attachmentsFlipStateCurrentMesh.Items[i] != attachmentsFlipStateTemp.Items[i])
				return true;
		}

		// Check submeshes
		int submeshCount = addSubmeshArgumentsTemp.Count;
		if (addSubmeshArgumentsCurrentMesh.Count != submeshCount)
			return true;

		for (int i = 0; i < submeshCount; i++) {
			if (!addSubmeshArgumentsCurrentMesh.Items[i].Equals(ref addSubmeshArgumentsTemp.Items[i]))
				return true;
		}

		return false;
	}

            public void Set(Vector3[] verts, Vector2[] uvs, Color32[] colors, ExposedList<Attachment> attachments, ExposedList<SubmeshInstruction> instructions)
            {
                mesh.vertices = verts;
                mesh.uv = uvs;
                mesh.colors32 = colors;

                attachmentsUsed.Clear(false);
                attachmentsUsed.GrowIfNeeded(attachments.Capacity);
                attachmentsUsed.Count = attachments.Count;
                attachments.CopyTo(attachmentsUsed.Items);

                instructionsUsed.Clear(false);
                instructionsUsed.GrowIfNeeded(instructions.Capacity);
                instructionsUsed.Count = instructions.Count;
                instructions.CopyTo(instructionsUsed.Items);
            }

	/** Stores vertices and triangles for a single material. */
	private void AddSubmesh (Material material, int startSlot, int endSlot, int triangleCount, int firstVertex, bool lastSubmesh, ExposedList<bool> flipStates) {
		int submeshIndex = submeshMaterials.Count;
		submeshMaterials.Add(material);

		if (submeshes.Count <= submeshIndex)
			submeshes.Add(new Submesh());
		else if (immutableTriangles)
			return;

		Submesh submesh = submeshes.Items[submeshIndex];

		int[] triangles = submesh.triangles;
		int trianglesCapacity = triangles.Length;
		if (lastSubmesh && trianglesCapacity > triangleCount) {
			// Last submesh may have more triangles than required, so zero triangles to the end.
			for (int i = triangleCount; i < trianglesCapacity; i++)
				triangles[i] = 0;
			submesh.triangleCount = triangleCount;
		} else if (trianglesCapacity != triangleCount) {
			// Reallocate triangles when not the exact size needed.
			submesh.triangles = triangles = new int[triangleCount];
			submesh.triangleCount = 0;
		}

		if (!renderMeshes && !frontFacing) {
			// Use stored triangles if possible.
			if (submesh.firstVertex != firstVertex || submesh.triangleCount < triangleCount) {
				submesh.triangleCount = triangleCount;
				submesh.firstVertex = firstVertex;
				int drawOrderIndex = 0;
				for (int i = 0; i < triangleCount; i += 6, firstVertex += 4, drawOrderIndex++) {
					triangles[i] = firstVertex;
					triangles[i + 1] = firstVertex + 2;
					triangles[i + 2] = firstVertex + 1;
					triangles[i + 3] = firstVertex + 2;
					triangles[i + 4] = firstVertex + 3;
					triangles[i + 5] = firstVertex + 1;
				}
			}
			return;
		}

		// Store triangles.
		ExposedList<Slot> drawOrder = skeleton.DrawOrder;
		for (int i = startSlot, triangleIndex = 0; i < endSlot; i++) {
			Slot slot = drawOrder.Items[i];
			Attachment attachment = slot.attachment;

			bool flip = flipStates.Items[i];

			if (attachment is RegionAttachment) {
				if (!flip) {
					triangles[triangleIndex] = firstVertex;
					triangles[triangleIndex + 1] = firstVertex + 2;
					triangles[triangleIndex + 2] = firstVertex + 1;
					triangles[triangleIndex + 3] = firstVertex + 2;
					triangles[triangleIndex + 4] = firstVertex + 3;
					triangles[triangleIndex + 5] = firstVertex + 1;
				} else {
					triangles[triangleIndex] = firstVertex + 1;
					triangles[triangleIndex + 1] = firstVertex + 2;
					triangles[triangleIndex + 2] = firstVertex;
					triangles[triangleIndex + 3] = firstVertex + 1;
					triangles[triangleIndex + 4] = firstVertex + 3;
					triangles[triangleIndex + 5] = firstVertex + 2;
				}

				triangleIndex += 6;
				firstVertex += 4;
				continue;
			}
			int[] attachmentTriangles;
			int attachmentVertexCount;
			MeshAttachment meshAttachment = attachment as MeshAttachment;
			if (meshAttachment != null) {
				attachmentVertexCount = meshAttachment.vertices.Length >> 1;
				attachmentTriangles = meshAttachment.triangles;
			} else {
				SkinnedMeshAttachment skinnedMeshAttachment = attachment as SkinnedMeshAttachment;
				if (skinnedMeshAttachment != null) {
					attachmentVertexCount = skinnedMeshAttachment.uvs.Length >> 1;
					attachmentTriangles = skinnedMeshAttachment.triangles;
				} else
					continue;
			}

			if (flip) {
				for (int ii = 0, nn = attachmentTriangles.Length; ii < nn; ii += 3, triangleIndex += 3) {
					triangles[triangleIndex + 2] = firstVertex + attachmentTriangles[ii];
					triangles[triangleIndex + 1] = firstVertex + attachmentTriangles[ii + 1];
					triangles[triangleIndex] = firstVertex + attachmentTriangles[ii + 2];
				}
			} else {
				for (int ii = 0, nn = attachmentTriangles.Length; ii < nn; ii++, triangleIndex++) {
					triangles[triangleIndex] = firstVertex + attachmentTriangles[ii];
				}
			}

			firstVertex += attachmentVertexCount;
//.........这里部分代码省略.........

		public SkeletonBounds () {
			BoundingBoxes = new ExposedList<BoundingBoxAttachment>();
			Polygons = new ExposedList<Polygon>();
		}

        public override void Apply(Skeleton skeleton, float lastTime, float time, ExposedList<Event> firedEvents, float alpha)
        {
            float[] frames = this.frames;
            if (time < frames[0]) return; // Time is before first frame.

            Bone bone = skeleton.bones.Items[boneIndex];

            if (time >= frames[frames.Length - 3]) { // Time is after last frame.
                bone.x += (bone.data.x + frames[frames.Length - 2] - bone.x) * alpha;
                bone.y += (bone.data.y + frames[frames.Length - 1] - bone.y) * alpha;
                return;
            }

            // Interpolate between the previous frame and the current frame.
            int frameIndex = Animation.binarySearch(frames, time, 3);
            float prevFrameX = frames[frameIndex - 2];
            float prevFrameY = frames[frameIndex - 1];
            float frameTime = frames[frameIndex];
            float percent = 1 - (time - frameTime) / (frames[frameIndex + PREV_FRAME_TIME] - frameTime);
            percent = GetCurvePercent(frameIndex / 3 - 1, percent < 0 ? 0 : (percent > 1 ? 1 : percent));

            bone.x += (bone.data.x + prevFrameX + (frames[frameIndex + FRAME_X] - prevFrameX) * percent - bone.x) * alpha;
            bone.y += (bone.data.y + prevFrameY + (frames[frameIndex + FRAME_Y] - prevFrameY) * percent - bone.y) * alpha;
        }

		float[] ComputeWorldPositions (PathAttachment path, int spacesCount, bool tangents, bool percentPosition,
			bool percentSpacing) {

			Slot target = this.target;
			float position = this.position;
			float[] spaces = this.spaces.Items, output = this.positions.Resize(spacesCount * 3 + 2).Items, world;
			bool closed = path.Closed;
			int verticesLength = path.WorldVerticesLength, curveCount = verticesLength / 6, prevCurve = NONE;

			float pathLength;
			if (!path.ConstantSpeed) {
				float[] lengths = path.Lengths;
				curveCount -= closed ? 1 : 2;
				pathLength = lengths[curveCount];
				if (percentPosition) position *= pathLength;
				if (percentSpacing) {
					for (int i = 0; i < spacesCount; i++)
						spaces[i] *= pathLength;
				}
				world = this.world.Resize(8).Items;
				for (int i = 0, o = 0, curve = 0; i < spacesCount; i++, o += 3) {
					float space = spaces[i];
					position += space;
					float p = position;

					if (closed) {
						p %= pathLength;
						if (p < 0) p += pathLength;
						curve = 0;
					} else if (p < 0) {
						if (prevCurve != BEFORE) {
							prevCurve = BEFORE;
							path.ComputeWorldVertices(target, 2, 4, world, 0);
						}
						AddBeforePosition(p, world, 0, output, o);
						continue;
					} else if (p > pathLength) {
						if (prevCurve != AFTER) {
							prevCurve = AFTER;
							path.ComputeWorldVertices(target, verticesLength - 6, 4, world, 0);
						}
						AddAfterPosition(p - pathLength, world, 0, output, o);
						continue;
					}

					// Determine curve containing position.
					for (;; curve++) {
						float length = lengths[curve];
						if (p > length) continue;
						if (curve == 0)
							p /= length;
						else {
							float prev = lengths[curve - 1];
							p = (p - prev) / (length - prev);
						}
						break;
					}
					if (curve != prevCurve) {
						prevCurve = curve;
						if (closed && curve == curveCount) {
							path.ComputeWorldVertices(target, verticesLength - 4, 4, world, 0);
							path.ComputeWorldVertices(target, 0, 4, world, 4);
						} else
							path.ComputeWorldVertices(target, curve * 6 + 2, 8, world, 0);
					}
					AddCurvePosition(p, world[0], world[1], world[2], world[3], world[4], world[5], world[6], world[7], output, o,
						tangents || (i > 0 && space == 0));
				}
				return output;
			}

			// World vertices.
			if (closed) {
				verticesLength += 2;
				world = this.world.Resize(verticesLength).Items;
				path.ComputeWorldVertices(target, 2, verticesLength - 4, world, 0);
				path.ComputeWorldVertices(target, 0, 2, world, verticesLength - 4);
				world[verticesLength - 2] = world[0];
				world[verticesLength - 1] = world[1];
			} else {
				curveCount--;
				verticesLength -= 4;
				world = this.world.Resize(verticesLength).Items;
				path.ComputeWorldVertices(target, 2, verticesLength, world, 0);
			}

			// Curve lengths.
			float[] curves = this.curves.Resize(curveCount).Items;
			pathLength = 0;
			float x1 = world[0], y1 = world[1], cx1 = 0, cy1 = 0, cx2 = 0, cy2 = 0, x2 = 0, y2 = 0;
			float tmpx, tmpy, dddfx, dddfy, ddfx, ddfy, dfx, dfy;
			for (int i = 0, w = 2; i < curveCount; i++, w += 6) {
				cx1 = world[w];
				cy1 = world[w + 1];
				cx2 = world[w + 2];
				cy2 = world[w + 3];
				x2 = world[w + 4];
				y2 = world[w + 5];
				tmpx = (x1 - cx1 * 2 + cx2) * 0.1875f;
				tmpy = (y1 - cy1 * 2 + cy2) * 0.1875f;
//.........这里部分代码省略.........