| 1 |
- {"ast":null,"code":"import { Bone } from \"./bone.js\";\nimport { Observable } from \"../Misc/observable.js\";\nimport { Vector3, Matrix, TmpVectors } from \"../Maths/math.vector.js\";\nimport { RawTexture } from \"../Materials/Textures/rawTexture.js\";\nimport { Animation } from \"../Animations/animation.js\";\nimport { AnimationRange } from \"../Animations/animationRange.js\";\nimport { EngineStore } from \"../Engines/engineStore.js\";\nimport { Logger } from \"../Misc/logger.js\";\nimport { DeepCopier } from \"../Misc/deepCopier.js\";\n/**\n * Class used to handle skinning animations\n * @see https://doc.babylonjs.com/features/featuresDeepDive/mesh/bonesSkeletons\n */\nexport class Skeleton {\n /**\n * Gets or sets a boolean indicating that bone matrices should be stored as a texture instead of using shader uniforms (default is true).\n * Please note that this option is not available if the hardware does not support it\n */\n get useTextureToStoreBoneMatrices() {\n return this._useTextureToStoreBoneMatrices;\n }\n set useTextureToStoreBoneMatrices(value) {\n this._useTextureToStoreBoneMatrices = value;\n this._markAsDirty();\n }\n /**\n * Gets or sets the animation properties override\n */\n get animationPropertiesOverride() {\n if (!this._animationPropertiesOverride) {\n return this._scene.animationPropertiesOverride;\n }\n return this._animationPropertiesOverride;\n }\n set animationPropertiesOverride(value) {\n this._animationPropertiesOverride = value;\n }\n /**\n * Gets a boolean indicating that the skeleton effectively stores matrices into a texture\n */\n get isUsingTextureForMatrices() {\n return this.useTextureToStoreBoneMatrices && this._canUseTextureForBones;\n }\n /**\n * Gets the unique ID of this skeleton\n */\n get uniqueId() {\n return this._uniqueId;\n }\n /**\n * Creates a new skeleton\n * @param name defines the skeleton name\n * @param id defines the skeleton Id\n * @param scene defines the hosting scene\n */\n constructor( /** defines the skeleton name */\n name, /** defines the skeleton Id */\n id, scene) {\n this.name = name;\n this.id = id;\n /**\n * Defines the list of child bones\n */\n this.bones = [];\n /**\n * Defines a boolean indicating if the root matrix is provided by meshes or by the current skeleton (this is the default value)\n */\n this.needInitialSkinMatrix = false;\n this._isDirty = true;\n this._meshesWithPoseMatrix = new Array();\n this._identity = Matrix.Identity();\n this._currentRenderId = -1;\n this._ranges = {};\n this._absoluteTransformIsDirty = true;\n this._canUseTextureForBones = false;\n this._uniqueId = 0;\n /** @internal */\n this._numBonesWithLinkedTransformNode = 0;\n /** @internal */\n this._hasWaitingData = null;\n /** @internal */\n this._parentContainer = null;\n /**\n * Specifies if the skeleton should be serialized\n */\n this.doNotSerialize = false;\n this._useTextureToStoreBoneMatrices = true;\n this._animationPropertiesOverride = null;\n // Events\n /**\n * An observable triggered before computing the skeleton's matrices\n */\n this.onBeforeComputeObservable = new Observable();\n this.bones = [];\n this._scene = scene || EngineStore.LastCreatedScene;\n this._uniqueId = this._scene.getUniqueId();\n this._scene.addSkeleton(this);\n //make sure it will recalculate the matrix next time prepare is called.\n this._isDirty = true;\n const engineCaps = this._scene.getEngine().getCaps();\n this._canUseTextureForBones = engineCaps.textureFloat && engineCaps.maxVertexTextureImageUnits > 0;\n }\n /**\n * Gets the current object class name.\n * @returns the class name\n */\n getClassName() {\n return \"Skeleton\";\n }\n /**\n * Returns an array containing the root bones\n * @returns an array containing the root bones\n */\n getChildren() {\n return this.bones.filter(b => !b.getParent());\n }\n // Members\n /**\n * Gets the list of transform matrices to send to shaders (one matrix per bone)\n * @param mesh defines the mesh to use to get the root matrix (if needInitialSkinMatrix === true)\n * @returns a Float32Array containing matrices data\n */\n getTransformMatrices(mesh) {\n if (this.needInitialSkinMatrix) {\n if (!mesh) {\n throw new Error(\"getTransformMatrices: When using the needInitialSkinMatrix flag, a mesh must be provided\");\n }\n if (!mesh._bonesTransformMatrices) {\n this.prepare(true);\n }\n return mesh._bonesTransformMatrices;\n }\n if (!this._transformMatrices || this._isDirty) {\n this.prepare(!this._transformMatrices);\n }\n return this._transformMatrices;\n }\n /**\n * Gets the list of transform matrices to send to shaders inside a texture (one matrix per bone)\n * @param mesh defines the mesh to use to get the root matrix (if needInitialSkinMatrix === true)\n * @returns a raw texture containing the data\n */\n getTransformMatrixTexture(mesh) {\n if (this.needInitialSkinMatrix && mesh._transformMatrixTexture) {\n return mesh._transformMatrixTexture;\n }\n return this._transformMatrixTexture;\n }\n /**\n * Gets the current hosting scene\n * @returns a scene object\n */\n getScene() {\n return this._scene;\n }\n // Methods\n /**\n * Gets a string representing the current skeleton data\n * @param fullDetails defines a boolean indicating if we want a verbose version\n * @returns a string representing the current skeleton data\n */\n toString(fullDetails) {\n let ret = `Name: ${this.name}, nBones: ${this.bones.length}`;\n ret += `, nAnimationRanges: ${this._ranges ? Object.keys(this._ranges).length : \"none\"}`;\n if (fullDetails) {\n ret += \", Ranges: {\";\n let first = true;\n for (const name in this._ranges) {\n if (first) {\n ret += \", \";\n first = false;\n }\n ret += name;\n }\n ret += \"}\";\n }\n return ret;\n }\n /**\n * Get bone's index searching by name\n * @param name defines bone's name to search for\n * @returns the indice of the bone. Returns -1 if not found\n */\n getBoneIndexByName(name) {\n for (let boneIndex = 0, cache = this.bones.length; boneIndex < cache; boneIndex++) {\n if (this.bones[boneIndex].name === name) {\n return boneIndex;\n }\n }\n return -1;\n }\n /**\n * Create a new animation range\n * @param name defines the name of the range\n * @param from defines the start key\n * @param to defines the end key\n */\n createAnimationRange(name, from, to) {\n // check name not already in use\n if (!this._ranges[name]) {\n this._ranges[name] = new AnimationRange(name, from, to);\n for (let i = 0, nBones = this.bones.length; i < nBones; i++) {\n if (this.bones[i].animations[0]) {\n this.bones[i].animations[0].createRange(name, from, to);\n }\n }\n }\n }\n /**\n * Delete a specific animation range\n * @param name defines the name of the range\n * @param deleteFrames defines if frames must be removed as well\n */\n deleteAnimationRange(name, deleteFrames = true) {\n for (let i = 0, nBones = this.bones.length; i < nBones; i++) {\n if (this.bones[i].animations[0]) {\n this.bones[i].animations[0].deleteRange(name, deleteFrames);\n }\n }\n this._ranges[name] = null; // said much faster than 'delete this._range[name]'\n }\n /**\n * Gets a specific animation range\n * @param name defines the name of the range to look for\n * @returns the requested animation range or null if not found\n */\n getAnimationRange(name) {\n return this._ranges[name] || null;\n }\n /**\n * Gets the list of all animation ranges defined on this skeleton\n * @returns an array\n */\n getAnimationRanges() {\n const animationRanges = [];\n let name;\n for (name in this._ranges) {\n animationRanges.push(this._ranges[name]);\n }\n return animationRanges;\n }\n /**\n * Copy animation range from a source skeleton.\n * This is not for a complete retargeting, only between very similar skeleton's with only possible bone length differences\n * @param source defines the source skeleton\n * @param name defines the name of the range to copy\n * @param rescaleAsRequired defines if rescaling must be applied if required\n * @returns true if operation was successful\n */\n copyAnimationRange(source, name, rescaleAsRequired = false) {\n if (this._ranges[name] || !source.getAnimationRange(name)) {\n return false;\n }\n let ret = true;\n const frameOffset = this._getHighestAnimationFrame() + 1;\n // make a dictionary of source skeleton's bones, so exact same order or doubly nested loop is not required\n const boneDict = {};\n const sourceBones = source.bones;\n let nBones;\n let i;\n for (i = 0, nBones = sourceBones.length; i < nBones; i++) {\n boneDict[sourceBones[i].name] = sourceBones[i];\n }\n if (this.bones.length !== sourceBones.length) {\n Logger.Warn(`copyAnimationRange: this rig has ${this.bones.length} bones, while source as ${sourceBones.length}`);\n ret = false;\n }\n const skelDimensionsRatio = rescaleAsRequired && this.dimensionsAtRest && source.dimensionsAtRest ? this.dimensionsAtRest.divide(source.dimensionsAtRest) : null;\n for (i = 0, nBones = this.bones.length; i < nBones; i++) {\n const boneName = this.bones[i].name;\n const sourceBone = boneDict[boneName];\n if (sourceBone) {\n ret = ret && this.bones[i].copyAnimationRange(sourceBone, name, frameOffset, rescaleAsRequired, skelDimensionsRatio);\n } else {\n Logger.Warn(\"copyAnimationRange: not same rig, missing source bone \" + boneName);\n ret = false;\n }\n }\n // do not call createAnimationRange(), since it also is done to bones, which was already done\n const range = source.getAnimationRange(name);\n if (range) {\n this._ranges[name] = new AnimationRange(name, range.from + frameOffset, range.to + frameOffset);\n }\n return ret;\n }\n /**\n * Forces the skeleton to go to rest pose\n */\n returnToRest() {\n for (const bone of this.bones) {\n if (bone._index !== -1) {\n bone.returnToRest();\n }\n }\n }\n _getHighestAnimationFrame() {\n let ret = 0;\n for (let i = 0, nBones = this.bones.length; i < nBones; i++) {\n if (this.bones[i].animations[0]) {\n const highest = this.bones[i].animations[0].getHighestFrame();\n if (ret < highest) {\n ret = highest;\n }\n }\n }\n return ret;\n }\n /**\n * Begin a specific animation range\n * @param name defines the name of the range to start\n * @param loop defines if looping must be turned on (false by default)\n * @param speedRatio defines the speed ratio to apply (1 by default)\n * @param onAnimationEnd defines a callback which will be called when animation will end\n * @returns a new animatable\n */\n beginAnimation(name, loop, speedRatio, onAnimationEnd) {\n const range = this.getAnimationRange(name);\n if (!range) {\n return null;\n }\n return this._scene.beginAnimation(this, range.from, range.to, loop, speedRatio, onAnimationEnd);\n }\n /**\n * Convert the keyframes for a range of animation on a skeleton to be relative to a given reference frame.\n * @param skeleton defines the Skeleton containing the animation range to convert\n * @param referenceFrame defines the frame that keyframes in the range will be relative to\n * @param range defines the name of the AnimationRange belonging to the Skeleton to convert\n * @returns the original skeleton\n */\n static MakeAnimationAdditive(skeleton, referenceFrame = 0, range) {\n const rangeValue = skeleton.getAnimationRange(range);\n // We can't make a range additive if it doesn't exist\n if (!rangeValue) {\n return null;\n }\n // Find any current scene-level animatable belonging to the target that matches the range\n const sceneAnimatables = skeleton._scene.getAllAnimatablesByTarget(skeleton);\n let rangeAnimatable = null;\n for (let index = 0; index < sceneAnimatables.length; index++) {\n const sceneAnimatable = sceneAnimatables[index];\n if (sceneAnimatable.fromFrame === (rangeValue === null || rangeValue === void 0 ? void 0 : rangeValue.from) && sceneAnimatable.toFrame === (rangeValue === null || rangeValue === void 0 ? void 0 : rangeValue.to)) {\n rangeAnimatable = sceneAnimatable;\n break;\n }\n }\n // Convert the animations belonging to the skeleton to additive keyframes\n const animatables = skeleton.getAnimatables();\n for (let index = 0; index < animatables.length; index++) {\n const animatable = animatables[index];\n const animations = animatable.animations;\n if (!animations) {\n continue;\n }\n for (let animIndex = 0; animIndex < animations.length; animIndex++) {\n Animation.MakeAnimationAdditive(animations[animIndex], referenceFrame, range);\n }\n }\n // Mark the scene-level animatable as additive\n if (rangeAnimatable) {\n rangeAnimatable.isAdditive = true;\n }\n return skeleton;\n }\n /** @internal */\n _markAsDirty() {\n this._isDirty = true;\n this._absoluteTransformIsDirty = true;\n }\n /**\n * @internal\n */\n _registerMeshWithPoseMatrix(mesh) {\n this._meshesWithPoseMatrix.push(mesh);\n }\n /**\n * @internal\n */\n _unregisterMeshWithPoseMatrix(mesh) {\n const index = this._meshesWithPoseMatrix.indexOf(mesh);\n if (index > -1) {\n this._meshesWithPoseMatrix.splice(index, 1);\n }\n }\n _computeTransformMatrices(targetMatrix, initialSkinMatrix) {\n this.onBeforeComputeObservable.notifyObservers(this);\n for (let index = 0; index < this.bones.length; index++) {\n const bone = this.bones[index];\n bone._childUpdateId++;\n const parentBone = bone.getParent();\n if (parentBone) {\n bone.getLocalMatrix().multiplyToRef(parentBone.getFinalMatrix(), bone.getFinalMatrix());\n } else {\n if (initialSkinMatrix) {\n bone.getLocalMatrix().multiplyToRef(initialSkinMatrix, bone.getFinalMatrix());\n } else {\n bone.getFinalMatrix().copyFrom(bone.getLocalMatrix());\n }\n }\n if (bone._index !== -1) {\n const mappedIndex = bone._index === null ? index : bone._index;\n bone.getAbsoluteInverseBindMatrix().multiplyToArray(bone.getFinalMatrix(), targetMatrix, mappedIndex * 16);\n }\n }\n this._identity.copyToArray(targetMatrix, this.bones.length * 16);\n }\n /**\n * Build all resources required to render a skeleton\n * @param dontCheckFrameId defines a boolean indicating if prepare should be run without checking first the current frame id (default: false)\n */\n prepare(dontCheckFrameId = false) {\n if (!dontCheckFrameId) {\n const currentRenderId = this.getScene().getRenderId();\n if (this._currentRenderId === currentRenderId) {\n return;\n }\n this._currentRenderId = currentRenderId;\n }\n // Update the local matrix of bones with linked transform nodes.\n if (this._numBonesWithLinkedTransformNode > 0) {\n for (const bone of this.bones) {\n if (bone._linkedTransformNode) {\n const node = bone._linkedTransformNode;\n bone.position = node.position;\n if (node.rotationQuaternion) {\n bone.rotationQuaternion = node.rotationQuaternion;\n } else {\n bone.rotation = node.rotation;\n }\n bone.scaling = node.scaling;\n }\n }\n }\n if (this.needInitialSkinMatrix) {\n for (const mesh of this._meshesWithPoseMatrix) {\n const poseMatrix = mesh.getPoseMatrix();\n let needsUpdate = this._isDirty;\n if (!mesh._bonesTransformMatrices || mesh._bonesTransformMatrices.length !== 16 * (this.bones.length + 1)) {\n mesh._bonesTransformMatrices = new Float32Array(16 * (this.bones.length + 1));\n needsUpdate = true;\n }\n if (!needsUpdate) {\n continue;\n }\n if (this._synchronizedWithMesh !== mesh) {\n this._synchronizedWithMesh = mesh;\n // Prepare bones\n for (const bone of this.bones) {\n if (!bone.getParent()) {\n const matrix = bone.getBindMatrix();\n matrix.multiplyToRef(poseMatrix, TmpVectors.Matrix[1]);\n bone._updateAbsoluteBindMatrices(TmpVectors.Matrix[1]);\n }\n }\n if (this.isUsingTextureForMatrices) {\n const textureWidth = (this.bones.length + 1) * 4;\n if (!mesh._transformMatrixTexture || mesh._transformMatrixTexture.getSize().width !== textureWidth) {\n if (mesh._transformMatrixTexture) {\n mesh._transformMatrixTexture.dispose();\n }\n mesh._transformMatrixTexture = RawTexture.CreateRGBATexture(mesh._bonesTransformMatrices, (this.bones.length + 1) * 4, 1, this._scene, false, false, 1, 1);\n }\n }\n }\n this._computeTransformMatrices(mesh._bonesTransformMatrices, poseMatrix);\n if (this.isUsingTextureForMatrices && mesh._transformMatrixTexture) {\n mesh._transformMatrixTexture.update(mesh._bonesTransformMatrices);\n }\n }\n } else {\n if (!this._isDirty) {\n return;\n }\n if (!this._transformMatrices || this._transformMatrices.length !== 16 * (this.bones.length + 1)) {\n this._transformMatrices = new Float32Array(16 * (this.bones.length + 1));\n if (this.isUsingTextureForMatrices) {\n if (this._transformMatrixTexture) {\n this._transformMatrixTexture.dispose();\n }\n this._transformMatrixTexture = RawTexture.CreateRGBATexture(this._transformMatrices, (this.bones.length + 1) * 4, 1, this._scene, false, false, 1, 1);\n }\n }\n this._computeTransformMatrices(this._transformMatrices, null);\n if (this.isUsingTextureForMatrices && this._transformMatrixTexture) {\n this._transformMatrixTexture.update(this._transformMatrices);\n }\n }\n this._isDirty = false;\n }\n /**\n * Gets the list of animatables currently running for this skeleton\n * @returns an array of animatables\n */\n getAnimatables() {\n if (!this._animatables || this._animatables.length !== this.bones.length) {\n this._animatables = [];\n for (let index = 0; index < this.bones.length; index++) {\n this._animatables.push(this.bones[index]);\n }\n }\n return this._animatables;\n }\n /**\n * Clone the current skeleton\n * @param name defines the name of the new skeleton\n * @param id defines the id of the new skeleton\n * @returns the new skeleton\n */\n clone(name, id) {\n const result = new Skeleton(name, id || name, this._scene);\n result.needInitialSkinMatrix = this.needInitialSkinMatrix;\n for (let index = 0; index < this.bones.length; index++) {\n const source = this.bones[index];\n let parentBone = null;\n const parent = source.getParent();\n if (parent) {\n const parentIndex = this.bones.indexOf(parent);\n parentBone = result.bones[parentIndex];\n }\n const bone = new Bone(source.name, result, parentBone, source.getBindMatrix().clone(), source.getRestMatrix().clone());\n bone._index = source._index;\n if (source._linkedTransformNode) {\n bone.linkTransformNode(source._linkedTransformNode);\n }\n DeepCopier.DeepCopy(source.animations, bone.animations);\n }\n if (this._ranges) {\n result._ranges = {};\n for (const rangeName in this._ranges) {\n const range = this._ranges[rangeName];\n if (range) {\n result._ranges[rangeName] = range.clone();\n }\n }\n }\n this._isDirty = true;\n result.prepare(true);\n return result;\n }\n /**\n * Enable animation blending for this skeleton\n * @param blendingSpeed defines the blending speed to apply\n * @see https://doc.babylonjs.com/features/featuresDeepDive/animation/advanced_animations#animation-blending\n */\n enableBlending(blendingSpeed = 0.01) {\n this.bones.forEach(bone => {\n bone.animations.forEach(animation => {\n animation.enableBlending = true;\n animation.blendingSpeed = blendingSpeed;\n });\n });\n }\n /**\n * Releases all resources associated with the current skeleton\n */\n dispose() {\n this._meshesWithPoseMatrix.length = 0;\n // Animations\n this.getScene().stopAnimation(this);\n // Remove from scene\n this.getScene().removeSkeleton(this);\n if (this._parentContainer) {\n const index = this._parentContainer.skeletons.indexOf(this);\n if (index > -1) {\n this._parentContainer.skeletons.splice(index, 1);\n }\n this._parentContainer = null;\n }\n if (this._transformMatrixTexture) {\n this._transformMatrixTexture.dispose();\n this._transformMatrixTexture = null;\n }\n }\n /**\n * Serialize the skeleton in a JSON object\n * @returns a JSON object\n */\n serialize() {\n const serializationObject = {};\n serializationObject.name = this.name;\n serializationObject.id = this.id;\n if (this.dimensionsAtRest) {\n serializationObject.dimensionsAtRest = this.dimensionsAtRest.asArray();\n }\n serializationObject.bones = [];\n serializationObject.needInitialSkinMatrix = this.needInitialSkinMatrix;\n for (let index = 0; index < this.bones.length; index++) {\n var _bone$getTransformNod;\n const bone = this.bones[index];\n const parent = bone.getParent();\n const serializedBone = {\n parentBoneIndex: parent ? this.bones.indexOf(parent) : -1,\n index: bone.getIndex(),\n name: bone.name,\n id: bone.id,\n matrix: bone.getBindMatrix().asArray(),\n rest: bone.getRestMatrix().asArray(),\n linkedTransformNodeId: (_bone$getTransformNod = bone.getTransformNode()) === null || _bone$getTransformNod === void 0 ? void 0 : _bone$getTransformNod.id\n };\n serializationObject.bones.push(serializedBone);\n if (bone.length) {\n serializedBone.length = bone.length;\n }\n if (bone.metadata) {\n serializedBone.metadata = bone.metadata;\n }\n if (bone.animations && bone.animations.length > 0) {\n serializedBone.animation = bone.animations[0].serialize();\n }\n serializationObject.ranges = [];\n for (const name in this._ranges) {\n const source = this._ranges[name];\n if (!source) {\n continue;\n }\n const range = {};\n range.name = name;\n range.from = source.from;\n range.to = source.to;\n serializationObject.ranges.push(range);\n }\n }\n return serializationObject;\n }\n /**\n * Creates a new skeleton from serialized data\n * @param parsedSkeleton defines the serialized data\n * @param scene defines the hosting scene\n * @returns a new skeleton\n */\n static Parse(parsedSkeleton, scene) {\n const skeleton = new Skeleton(parsedSkeleton.name, parsedSkeleton.id, scene);\n if (parsedSkeleton.dimensionsAtRest) {\n skeleton.dimensionsAtRest = Vector3.FromArray(parsedSkeleton.dimensionsAtRest);\n }\n skeleton.needInitialSkinMatrix = parsedSkeleton.needInitialSkinMatrix;\n let index;\n for (index = 0; index < parsedSkeleton.bones.length; index++) {\n const parsedBone = parsedSkeleton.bones[index];\n const parsedBoneIndex = parsedSkeleton.bones[index].index;\n let parentBone = null;\n if (parsedBone.parentBoneIndex > -1) {\n parentBone = skeleton.bones[parsedBone.parentBoneIndex];\n }\n const rest = parsedBone.rest ? Matrix.FromArray(parsedBone.rest) : null;\n const bone = new Bone(parsedBone.name, skeleton, parentBone, Matrix.FromArray(parsedBone.matrix), rest, null, parsedBoneIndex);\n if (parsedBone.id !== undefined && parsedBone.id !== null) {\n bone.id = parsedBone.id;\n }\n if (parsedBone.length) {\n bone.length = parsedBone.length;\n }\n if (parsedBone.metadata) {\n bone.metadata = parsedBone.metadata;\n }\n if (parsedBone.animation) {\n bone.animations.push(Animation.Parse(parsedBone.animation));\n }\n if (parsedBone.linkedTransformNodeId !== undefined && parsedBone.linkedTransformNodeId !== null) {\n skeleton._hasWaitingData = true;\n bone._waitingTransformNodeId = parsedBone.linkedTransformNodeId;\n }\n }\n // placed after bones, so createAnimationRange can cascade down\n if (parsedSkeleton.ranges) {\n for (index = 0; index < parsedSkeleton.ranges.length; index++) {\n const data = parsedSkeleton.ranges[index];\n skeleton.createAnimationRange(data.name, data.from, data.to);\n }\n }\n return skeleton;\n }\n /**\n * Compute all node absolute matrices\n * @param forceUpdate defines if computation must be done even if cache is up to date\n */\n computeAbsoluteMatrices(forceUpdate = false) {\n if (this._absoluteTransformIsDirty || forceUpdate) {\n this.bones[0].computeAbsoluteMatrices();\n this._absoluteTransformIsDirty = false;\n }\n }\n /**\n * Compute all node absolute matrices\n * @param forceUpdate defines if computation must be done even if cache is up to date\n * @deprecated Please use computeAbsoluteMatrices instead\n */\n computeAbsoluteTransforms(forceUpdate = false) {\n this.computeAbsoluteMatrices(forceUpdate);\n }\n /**\n * Gets the root pose matrix\n * @returns a matrix\n */\n getPoseMatrix() {\n let poseMatrix = null;\n if (this._meshesWithPoseMatrix.length > 0) {\n poseMatrix = this._meshesWithPoseMatrix[0].getPoseMatrix();\n }\n return poseMatrix;\n }\n /**\n * Sorts bones per internal index\n */\n sortBones() {\n const bones = [];\n const visited = new Array(this.bones.length);\n for (let index = 0; index < this.bones.length; index++) {\n this._sortBones(index, bones, visited);\n }\n this.bones = bones;\n }\n _sortBones(index, bones, visited) {\n if (visited[index]) {\n return;\n }\n visited[index] = true;\n const bone = this.bones[index];\n if (!bone) return;\n if (bone._index === undefined) {\n bone._index = index;\n }\n const parentBone = bone.getParent();\n if (parentBone) {\n this._sortBones(this.bones.indexOf(parentBone), bones, visited);\n }\n bones.push(bone);\n }\n /**\n * Set the current local matrix as the restPose for all bones in the skeleton.\n */\n setCurrentPoseAsRest() {\n this.bones.forEach(b => {\n b.setCurrentPoseAsRest();\n });\n 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{ Bone } from \"./bone.js\";\nimport { Observable } from \"../Misc/observable.js\";\nimport { Vector3, Matrix, TmpVectors } from \"../Maths/math.vector.js\";\nimport { RawTexture } from \"../Materials/Textures/rawTexture.js\";\nimport { Animation } from \"../Animations/animation.js\";\nimport { AnimationRange } from \"../Animations/animationRange.js\";\nimport { EngineStore } from \"../Engines/engineStore.js\";\n\nimport { Logger } from \"../Misc/logger.js\";\nimport { DeepCopier } from \"../Misc/deepCopier.js\";\n/**\n * Class used to handle skinning animations\n * @see https://doc.babylonjs.com/features/featuresDeepDive/mesh/bonesSkeletons\n */\nexport class Skeleton {\n /**\n * Gets or sets a boolean indicating that bone matrices should be stored as a texture instead of using shader uniforms (default is true).\n * Please note that this option is not available if the hardware does not support it\n */\n get useTextureToStoreBoneMatrices() {\n return this._useTextureToStoreBoneMatrices;\n }\n set useTextureToStoreBoneMatrices(value) {\n this._useTextureToStoreBoneMatrices = value;\n this._markAsDirty();\n }\n /**\n * Gets or sets the animation properties override\n */\n get animationPropertiesOverride() {\n if (!this._animationPropertiesOverride) {\n return this._scene.animationPropertiesOverride;\n }\n return this._animationPropertiesOverride;\n }\n set animationPropertiesOverride(value) {\n this._animationPropertiesOverride = value;\n }\n /**\n * Gets a boolean indicating that the skeleton effectively stores matrices into a texture\n */\n get isUsingTextureForMatrices() {\n return this.useTextureToStoreBoneMatrices && this._canUseTextureForBones;\n }\n /**\n * Gets the unique ID of this skeleton\n */\n get uniqueId() {\n return this._uniqueId;\n }\n /**\n * Creates a new skeleton\n * @param name defines the skeleton name\n * @param id defines the skeleton Id\n * @param scene defines the hosting scene\n */\n constructor(\n /** defines the skeleton name */\n name, \n /** defines the skeleton Id */\n id, scene) {\n this.name = name;\n this.id = id;\n /**\n * Defines the list of child bones\n */\n this.bones = [];\n /**\n * Defines a boolean indicating if the root matrix is provided by meshes or by the current skeleton (this is the default value)\n */\n this.needInitialSkinMatrix = false;\n this._isDirty = true;\n this._meshesWithPoseMatrix = new Array();\n this._identity = Matrix.Identity();\n this._currentRenderId = -1;\n this._ranges = {};\n this._absoluteTransformIsDirty = true;\n this._canUseTextureForBones = false;\n this._uniqueId = 0;\n /** @internal */\n this._numBonesWithLinkedTransformNode = 0;\n /** @internal */\n this._hasWaitingData = null;\n /** @internal */\n this._parentContainer = null;\n /**\n * Specifies if the skeleton should be serialized\n */\n this.doNotSerialize = false;\n this._useTextureToStoreBoneMatrices = true;\n this._animationPropertiesOverride = null;\n // Events\n /**\n * An observable triggered before computing the skeleton's matrices\n */\n this.onBeforeComputeObservable = new Observable();\n this.bones = [];\n this._scene = scene || EngineStore.LastCreatedScene;\n this._uniqueId = this._scene.getUniqueId();\n this._scene.addSkeleton(this);\n //make sure it will recalculate the matrix next time prepare is called.\n this._isDirty = true;\n const engineCaps = this._scene.getEngine().getCaps();\n this._canUseTextureForBones = engineCaps.textureFloat && engineCaps.maxVertexTextureImageUnits > 0;\n }\n /**\n * Gets the current object class name.\n * @returns the class name\n */\n getClassName() {\n return \"Skeleton\";\n }\n /**\n * Returns an array containing the root bones\n * @returns an array containing the root bones\n */\n getChildren() {\n return this.bones.filter((b) => !b.getParent());\n }\n // Members\n /**\n * Gets the list of transform matrices to send to shaders (one matrix per bone)\n * @param mesh defines the mesh to use to get the root matrix (if needInitialSkinMatrix === true)\n * @returns a Float32Array containing matrices data\n */\n getTransformMatrices(mesh) {\n if (this.needInitialSkinMatrix) {\n if (!mesh) {\n throw new Error(\"getTransformMatrices: When using the needInitialSkinMatrix flag, a mesh must be provided\");\n }\n if (!mesh._bonesTransformMatrices) {\n this.prepare(true);\n }\n return mesh._bonesTransformMatrices;\n }\n if (!this._transformMatrices || this._isDirty) {\n this.prepare(!this._transformMatrices);\n }\n return this._transformMatrices;\n }\n /**\n * Gets the list of transform matrices to send to shaders inside a texture (one matrix per bone)\n * @param mesh defines the mesh to use to get the root matrix (if needInitialSkinMatrix === true)\n * @returns a raw texture containing the data\n */\n getTransformMatrixTexture(mesh) {\n if (this.needInitialSkinMatrix && mesh._transformMatrixTexture) {\n return mesh._transformMatrixTexture;\n }\n return this._transformMatrixTexture;\n }\n /**\n * Gets the current hosting scene\n * @returns a scene object\n */\n getScene() {\n return this._scene;\n }\n // Methods\n /**\n * Gets a string representing the current skeleton data\n * @param fullDetails defines a boolean indicating if we want a verbose version\n * @returns a string representing the current skeleton data\n */\n toString(fullDetails) {\n let ret = `Name: ${this.name}, nBones: ${this.bones.length}`;\n ret += `, nAnimationRanges: ${this._ranges ? Object.keys(this._ranges).length : \"none\"}`;\n if (fullDetails) {\n ret += \", Ranges: {\";\n let first = true;\n for (const name in this._ranges) {\n if (first) {\n ret += \", \";\n first = false;\n }\n ret += name;\n }\n ret += \"}\";\n }\n return ret;\n }\n /**\n * Get bone's index searching by name\n * @param name defines bone's name to search for\n * @returns the indice of the bone. Returns -1 if not found\n */\n getBoneIndexByName(name) {\n for (let boneIndex = 0, cache = this.bones.length; boneIndex < cache; boneIndex++) {\n if (this.bones[boneIndex].name === name) {\n return boneIndex;\n }\n }\n return -1;\n }\n /**\n * Create a new animation range\n * @param name defines the name of the range\n * @param from defines the start key\n * @param to defines the end key\n */\n createAnimationRange(name, from, to) {\n // check name not already in use\n if (!this._ranges[name]) {\n this._ranges[name] = new AnimationRange(name, from, to);\n for (let i = 0, nBones = this.bones.length; i < nBones; i++) {\n if (this.bones[i].animations[0]) {\n this.bones[i].animations[0].createRange(name, from, to);\n }\n }\n }\n }\n /**\n * Delete a specific animation range\n * @param name defines the name of the range\n * @param deleteFrames defines if frames must be removed as well\n */\n deleteAnimationRange(name, deleteFrames = true) {\n for (let i = 0, nBones = this.bones.length; i < nBones; i++) {\n if (this.bones[i].animations[0]) {\n this.bones[i].animations[0].deleteRange(name, deleteFrames);\n }\n }\n this._ranges[name] = null; // said much faster than 'delete this._range[name]'\n }\n /**\n * Gets a specific animation range\n * @param name defines the name of the range to look for\n * @returns the requested animation range or null if not found\n */\n getAnimationRange(name) {\n return this._ranges[name] || null;\n }\n /**\n * Gets the list of all animation ranges defined on this skeleton\n * @returns an array\n */\n getAnimationRanges() {\n const animationRanges = [];\n let name;\n for (name in this._ranges) {\n animationRanges.push(this._ranges[name]);\n }\n return animationRanges;\n }\n /**\n * Copy animation range from a source skeleton.\n * This is not for a complete retargeting, only between very similar skeleton's with only possible bone length differences\n * @param source defines the source skeleton\n * @param name defines the name of the range to copy\n * @param rescaleAsRequired defines if rescaling must be applied if required\n * @returns true if operation was successful\n */\n copyAnimationRange(source, name, rescaleAsRequired = false) {\n if (this._ranges[name] || !source.getAnimationRange(name)) {\n return false;\n }\n let ret = true;\n const frameOffset = this._getHighestAnimationFrame() + 1;\n // make a dictionary of source skeleton's bones, so exact same order or doubly nested loop is not required\n const boneDict = {};\n const sourceBones = source.bones;\n let nBones;\n let i;\n for (i = 0, nBones = sourceBones.length; i < nBones; i++) {\n boneDict[sourceBones[i].name] = sourceBones[i];\n }\n if (this.bones.length !== sourceBones.length) {\n Logger.Warn(`copyAnimationRange: this rig has ${this.bones.length} bones, while source as ${sourceBones.length}`);\n ret = false;\n }\n const skelDimensionsRatio = rescaleAsRequired && this.dimensionsAtRest && source.dimensionsAtRest ? this.dimensionsAtRest.divide(source.dimensionsAtRest) : null;\n for (i = 0, nBones = this.bones.length; i < nBones; i++) {\n const boneName = this.bones[i].name;\n const sourceBone = boneDict[boneName];\n if (sourceBone) {\n ret = ret && this.bones[i].copyAnimationRange(sourceBone, name, frameOffset, rescaleAsRequired, skelDimensionsRatio);\n }\n else {\n Logger.Warn(\"copyAnimationRange: not same rig, missing source bone \" + boneName);\n ret = false;\n }\n }\n // do not call createAnimationRange(), since it also is done to bones, which was already done\n const range = source.getAnimationRange(name);\n if (range) {\n this._ranges[name] = new AnimationRange(name, range.from + frameOffset, range.to + frameOffset);\n }\n return ret;\n }\n /**\n * Forces the skeleton to go to rest pose\n */\n returnToRest() {\n for (const bone of this.bones) {\n if (bone._index !== -1) {\n bone.returnToRest();\n }\n }\n }\n _getHighestAnimationFrame() {\n let ret = 0;\n for (let i = 0, nBones = this.bones.length; i < nBones; i++) {\n if (this.bones[i].animations[0]) {\n const highest = this.bones[i].animations[0].getHighestFrame();\n if (ret < highest) {\n ret = highest;\n }\n }\n }\n return ret;\n }\n /**\n * Begin a specific animation range\n * @param name defines the name of the range to start\n * @param loop defines if looping must be turned on (false by default)\n * @param speedRatio defines the speed ratio to apply (1 by default)\n * @param onAnimationEnd defines a callback which will be called when animation will end\n * @returns a new animatable\n */\n beginAnimation(name, loop, speedRatio, onAnimationEnd) {\n const range = this.getAnimationRange(name);\n if (!range) {\n return null;\n }\n return this._scene.beginAnimation(this, range.from, range.to, loop, speedRatio, onAnimationEnd);\n }\n /**\n * Convert the keyframes for a range of animation on a skeleton to be relative to a given reference frame.\n * @param skeleton defines the Skeleton containing the animation range to convert\n * @param referenceFrame defines the frame that keyframes in the range will be relative to\n * @param range defines the name of the AnimationRange belonging to the Skeleton to convert\n * @returns the original skeleton\n */\n static MakeAnimationAdditive(skeleton, referenceFrame = 0, range) {\n const rangeValue = skeleton.getAnimationRange(range);\n // We can't make a range additive if it doesn't exist\n if (!rangeValue) {\n return null;\n }\n // Find any current scene-level animatable belonging to the target that matches the range\n const sceneAnimatables = skeleton._scene.getAllAnimatablesByTarget(skeleton);\n let rangeAnimatable = null;\n for (let index = 0; index < sceneAnimatables.length; index++) {\n const sceneAnimatable = sceneAnimatables[index];\n if (sceneAnimatable.fromFrame === rangeValue?.from && sceneAnimatable.toFrame === rangeValue?.to) {\n rangeAnimatable = sceneAnimatable;\n break;\n }\n }\n // Convert the animations belonging to the skeleton to additive keyframes\n const animatables = skeleton.getAnimatables();\n for (let index = 0; index < animatables.length; index++) {\n const animatable = animatables[index];\n const animations = animatable.animations;\n if (!animations) {\n continue;\n }\n for (let animIndex = 0; animIndex < animations.length; animIndex++) {\n Animation.MakeAnimationAdditive(animations[animIndex], referenceFrame, range);\n }\n }\n // Mark the scene-level animatable as additive\n if (rangeAnimatable) {\n rangeAnimatable.isAdditive = true;\n }\n return skeleton;\n }\n /** @internal */\n _markAsDirty() {\n this._isDirty = true;\n this._absoluteTransformIsDirty = true;\n }\n /**\n * @internal\n */\n _registerMeshWithPoseMatrix(mesh) {\n this._meshesWithPoseMatrix.push(mesh);\n }\n /**\n * @internal\n */\n _unregisterMeshWithPoseMatrix(mesh) {\n const index = this._meshesWithPoseMatrix.indexOf(mesh);\n if (index > -1) {\n this._meshesWithPoseMatrix.splice(index, 1);\n }\n }\n _computeTransformMatrices(targetMatrix, initialSkinMatrix) {\n this.onBeforeComputeObservable.notifyObservers(this);\n for (let index = 0; index < this.bones.length; index++) {\n const bone = this.bones[index];\n bone._childUpdateId++;\n const parentBone = bone.getParent();\n if (parentBone) {\n bone.getLocalMatrix().multiplyToRef(parentBone.getFinalMatrix(), bone.getFinalMatrix());\n }\n else {\n if (initialSkinMatrix) {\n bone.getLocalMatrix().multiplyToRef(initialSkinMatrix, bone.getFinalMatrix());\n }\n else {\n bone.getFinalMatrix().copyFrom(bone.getLocalMatrix());\n }\n }\n if (bone._index !== -1) {\n const mappedIndex = bone._index === null ? index : bone._index;\n bone.getAbsoluteInverseBindMatrix().multiplyToArray(bone.getFinalMatrix(), targetMatrix, mappedIndex * 16);\n }\n }\n this._identity.copyToArray(targetMatrix, this.bones.length * 16);\n }\n /**\n * Build all resources required to render a skeleton\n * @param dontCheckFrameId defines a boolean indicating if prepare should be run without checking first the current frame id (default: false)\n */\n prepare(dontCheckFrameId = false) {\n if (!dontCheckFrameId) {\n const currentRenderId = this.getScene().getRenderId();\n if (this._currentRenderId === currentRenderId) {\n return;\n }\n this._currentRenderId = currentRenderId;\n }\n // Update the local matrix of bones with linked transform nodes.\n if (this._numBonesWithLinkedTransformNode > 0) {\n for (const bone of this.bones) {\n if (bone._linkedTransformNode) {\n const node = bone._linkedTransformNode;\n bone.position = node.position;\n if (node.rotationQuaternion) {\n bone.rotationQuaternion = node.rotationQuaternion;\n }\n else {\n bone.rotation = node.rotation;\n }\n bone.scaling = node.scaling;\n }\n }\n }\n if (this.needInitialSkinMatrix) {\n for (const mesh of this._meshesWithPoseMatrix) {\n const poseMatrix = mesh.getPoseMatrix();\n let needsUpdate = this._isDirty;\n if (!mesh._bonesTransformMatrices || mesh._bonesTransformMatrices.length !== 16 * (this.bones.length + 1)) {\n mesh._bonesTransformMatrices = new Float32Array(16 * (this.bones.length + 1));\n needsUpdate = true;\n }\n if (!needsUpdate) {\n continue;\n }\n if (this._synchronizedWithMesh !== mesh) {\n this._synchronizedWithMesh = mesh;\n // Prepare bones\n for (const bone of this.bones) {\n if (!bone.getParent()) {\n const matrix = bone.getBindMatrix();\n matrix.multiplyToRef(poseMatrix, TmpVectors.Matrix[1]);\n bone._updateAbsoluteBindMatrices(TmpVectors.Matrix[1]);\n }\n }\n if (this.isUsingTextureForMatrices) {\n const textureWidth = (this.bones.length + 1) * 4;\n if (!mesh._transformMatrixTexture || mesh._transformMatrixTexture.getSize().width !== textureWidth) {\n if (mesh._transformMatrixTexture) {\n mesh._transformMatrixTexture.dispose();\n }\n mesh._transformMatrixTexture = RawTexture.CreateRGBATexture(mesh._bonesTransformMatrices, (this.bones.length + 1) * 4, 1, this._scene, false, false, 1, 1);\n }\n }\n }\n this._computeTransformMatrices(mesh._bonesTransformMatrices, poseMatrix);\n if (this.isUsingTextureForMatrices && mesh._transformMatrixTexture) {\n mesh._transformMatrixTexture.update(mesh._bonesTransformMatrices);\n }\n }\n }\n else {\n if (!this._isDirty) {\n return;\n }\n if (!this._transformMatrices || this._transformMatrices.length !== 16 * (this.bones.length + 1)) {\n this._transformMatrices = new Float32Array(16 * (this.bones.length + 1));\n if (this.isUsingTextureForMatrices) {\n if (this._transformMatrixTexture) {\n this._transformMatrixTexture.dispose();\n }\n this._transformMatrixTexture = RawTexture.CreateRGBATexture(this._transformMatrices, (this.bones.length + 1) * 4, 1, this._scene, false, false, 1, 1);\n }\n }\n this._computeTransformMatrices(this._transformMatrices, null);\n if (this.isUsingTextureForMatrices && this._transformMatrixTexture) {\n this._transformMatrixTexture.update(this._transformMatrices);\n }\n }\n this._isDirty = false;\n }\n /**\n * Gets the list of animatables currently running for this skeleton\n * @returns an array of animatables\n */\n getAnimatables() {\n if (!this._animatables || this._animatables.length !== this.bones.length) {\n this._animatables = [];\n for (let index = 0; index < this.bones.length; index++) {\n this._animatables.push(this.bones[index]);\n }\n }\n return this._animatables;\n }\n /**\n * Clone the current skeleton\n * @param name defines the name of the new skeleton\n * @param id defines the id of the new skeleton\n * @returns the new skeleton\n */\n clone(name, id) {\n const result = new Skeleton(name, id || name, this._scene);\n result.needInitialSkinMatrix = this.needInitialSkinMatrix;\n for (let index = 0; index < this.bones.length; index++) {\n const source = this.bones[index];\n let parentBone = null;\n const parent = source.getParent();\n if (parent) {\n const parentIndex = this.bones.indexOf(parent);\n parentBone = result.bones[parentIndex];\n }\n const bone = new Bone(source.name, result, parentBone, source.getBindMatrix().clone(), source.getRestMatrix().clone());\n bone._index = source._index;\n if (source._linkedTransformNode) {\n bone.linkTransformNode(source._linkedTransformNode);\n }\n DeepCopier.DeepCopy(source.animations, bone.animations);\n }\n if (this._ranges) {\n result._ranges = {};\n for (const rangeName in this._ranges) {\n const range = this._ranges[rangeName];\n if (range) {\n result._ranges[rangeName] = range.clone();\n }\n }\n }\n this._isDirty = true;\n result.prepare(true);\n return result;\n }\n /**\n * Enable animation blending for this skeleton\n * @param blendingSpeed defines the blending speed to apply\n * @see https://doc.babylonjs.com/features/featuresDeepDive/animation/advanced_animations#animation-blending\n */\n enableBlending(blendingSpeed = 0.01) {\n this.bones.forEach((bone) => {\n bone.animations.forEach((animation) => {\n animation.enableBlending = true;\n animation.blendingSpeed = blendingSpeed;\n });\n });\n }\n /**\n * Releases all resources associated with the current skeleton\n */\n dispose() {\n this._meshesWithPoseMatrix.length = 0;\n // Animations\n this.getScene().stopAnimation(this);\n // Remove from scene\n this.getScene().removeSkeleton(this);\n if (this._parentContainer) {\n const index = this._parentContainer.skeletons.indexOf(this);\n if (index > -1) {\n this._parentContainer.skeletons.splice(index, 1);\n }\n this._parentContainer = null;\n }\n if (this._transformMatrixTexture) {\n this._transformMatrixTexture.dispose();\n this._transformMatrixTexture = null;\n }\n }\n /**\n * Serialize the skeleton in a JSON object\n * @returns a JSON object\n */\n serialize() {\n const serializationObject = {};\n serializationObject.name = this.name;\n serializationObject.id = this.id;\n if (this.dimensionsAtRest) {\n serializationObject.dimensionsAtRest = this.dimensionsAtRest.asArray();\n }\n serializationObject.bones = [];\n serializationObject.needInitialSkinMatrix = this.needInitialSkinMatrix;\n for (let index = 0; index < this.bones.length; index++) {\n const bone = this.bones[index];\n const parent = bone.getParent();\n const serializedBone = {\n parentBoneIndex: parent ? this.bones.indexOf(parent) : -1,\n index: bone.getIndex(),\n name: bone.name,\n id: bone.id,\n matrix: bone.getBindMatrix().asArray(),\n rest: bone.getRestMatrix().asArray(),\n linkedTransformNodeId: bone.getTransformNode()?.id,\n };\n serializationObject.bones.push(serializedBone);\n if (bone.length) {\n serializedBone.length = bone.length;\n }\n if (bone.metadata) {\n serializedBone.metadata = bone.metadata;\n }\n if (bone.animations && bone.animations.length > 0) {\n serializedBone.animation = bone.animations[0].serialize();\n }\n serializationObject.ranges = [];\n for (const name in this._ranges) {\n const source = this._ranges[name];\n if (!source) {\n continue;\n }\n const range = {};\n range.name = name;\n range.from = source.from;\n range.to = source.to;\n serializationObject.ranges.push(range);\n }\n }\n return serializationObject;\n }\n /**\n * Creates a new skeleton from serialized data\n * @param parsedSkeleton defines the serialized data\n * @param scene defines the hosting scene\n * @returns a new skeleton\n */\n static Parse(parsedSkeleton, scene) {\n const skeleton = new Skeleton(parsedSkeleton.name, parsedSkeleton.id, scene);\n if (parsedSkeleton.dimensionsAtRest) {\n skeleton.dimensionsAtRest = Vector3.FromArray(parsedSkeleton.dimensionsAtRest);\n }\n skeleton.needInitialSkinMatrix = parsedSkeleton.needInitialSkinMatrix;\n let index;\n for (index = 0; index < parsedSkeleton.bones.length; index++) {\n const parsedBone = parsedSkeleton.bones[index];\n const parsedBoneIndex = parsedSkeleton.bones[index].index;\n let parentBone = null;\n if (parsedBone.parentBoneIndex > -1) {\n parentBone = skeleton.bones[parsedBone.parentBoneIndex];\n }\n const rest = parsedBone.rest ? Matrix.FromArray(parsedBone.rest) : null;\n const bone = new Bone(parsedBone.name, skeleton, parentBone, Matrix.FromArray(parsedBone.matrix), rest, null, parsedBoneIndex);\n if (parsedBone.id !== undefined && parsedBone.id !== null) {\n bone.id = parsedBone.id;\n }\n if (parsedBone.length) {\n bone.length = parsedBone.length;\n }\n if (parsedBone.metadata) {\n bone.metadata = parsedBone.metadata;\n }\n if (parsedBone.animation) {\n bone.animations.push(Animation.Parse(parsedBone.animation));\n }\n if (parsedBone.linkedTransformNodeId !== undefined && parsedBone.linkedTransformNodeId !== null) {\n skeleton._hasWaitingData = true;\n bone._waitingTransformNodeId = parsedBone.linkedTransformNodeId;\n }\n }\n // placed after bones, so createAnimationRange can cascade down\n if (parsedSkeleton.ranges) {\n for (index = 0; index < parsedSkeleton.ranges.length; index++) {\n const data = parsedSkeleton.ranges[index];\n skeleton.createAnimationRange(data.name, data.from, data.to);\n }\n }\n return skeleton;\n }\n /**\n * Compute all node absolute matrices\n * @param forceUpdate defines if computation must be done even if cache is up to date\n */\n computeAbsoluteMatrices(forceUpdate = false) {\n if (this._absoluteTransformIsDirty || forceUpdate) {\n this.bones[0].computeAbsoluteMatrices();\n this._absoluteTransformIsDirty = false;\n }\n }\n /**\n * Compute all node absolute matrices\n * @param forceUpdate defines if computation must be done even if cache is up to date\n * @deprecated Please use computeAbsoluteMatrices instead\n */\n computeAbsoluteTransforms(forceUpdate = false) {\n this.computeAbsoluteMatrices(forceUpdate);\n }\n /**\n * Gets the root pose matrix\n * @returns a matrix\n */\n getPoseMatrix() {\n let poseMatrix = null;\n if (this._meshesWithPoseMatrix.length > 0) {\n poseMatrix = this._meshesWithPoseMatrix[0].getPoseMatrix();\n }\n return poseMatrix;\n }\n /**\n * Sorts bones per internal index\n */\n sortBones() {\n const bones = [];\n const visited = new Array(this.bones.length);\n for (let index = 0; index < this.bones.length; index++) {\n this._sortBones(index, bones, visited);\n }\n this.bones = bones;\n }\n _sortBones(index, bones, visited) {\n if (visited[index]) {\n return;\n }\n visited[index] = true;\n const bone = this.bones[index];\n if (!bone)\n return;\n if (bone._index === undefined) {\n bone._index = index;\n }\n const parentBone = bone.getParent();\n if (parentBone) {\n this._sortBones(this.bones.indexOf(parentBone), bones, visited);\n }\n bones.push(bone);\n }\n /**\n * Set the current local matrix as the restPose for all bones in the skeleton.\n */\n setCurrentPoseAsRest() {\n this.bones.forEach((b) => {\n b.setCurrentPoseAsRest();\n });\n 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