| 1 |
- {"ast":null,"code":"import { Vector3, Matrix, TmpVectors } from \"../Maths/math.vector.js\";\nimport { Color3, Color4 } from \"../Maths/math.color.js\";\nimport { Mesh } from \"../Meshes/mesh.js\";\nimport { CreateLineSystem } from \"../Meshes/Builders/linesBuilder.js\";\nimport { UtilityLayerRenderer } from \"../Rendering/utilityLayerRenderer.js\";\nimport { Material } from \"../Materials/material.js\";\nimport { ShaderMaterial } from \"../Materials/shaderMaterial.js\";\nimport { DynamicTexture } from \"../Materials/Textures/dynamicTexture.js\";\nimport { VertexBuffer } from \"../Buffers/buffer.js\";\nimport { Effect } from \"../Materials/effect.js\";\nimport { CreateSphere } from \"../Meshes/Builders/sphereBuilder.js\";\nimport { ExtrudeShapeCustom } from \"../Meshes/Builders/shapeBuilder.js\";\nimport { TransformNode } from \"../Meshes/transformNode.js\";\nimport { Logger } from \"../Misc/logger.js\";\n/**\n * Class used to render a debug view of a given skeleton\n * @see http://www.babylonjs-playground.com/#1BZJVJ#8\n */\nexport class SkeletonViewer {\n /** public static method to create a BoneWeight Shader\n * @param options The constructor options\n * @param scene The scene that the shader is scoped to\n * @returns The created ShaderMaterial\n * @see http://www.babylonjs-playground.com/#1BZJVJ#395\n */\n static CreateBoneWeightShader(options, scene) {\n var _options$colorBase, _options$colorZero, _options$colorQuarter, _options$colorHalf, _options$colorFull, _options$targetBoneIn;\n const skeleton = options.skeleton;\n const colorBase = (_options$colorBase = options.colorBase) !== null && _options$colorBase !== void 0 ? _options$colorBase : Color3.Black();\n const colorZero = (_options$colorZero = options.colorZero) !== null && _options$colorZero !== void 0 ? _options$colorZero : Color3.Blue();\n const colorQuarter = (_options$colorQuarter = options.colorQuarter) !== null && _options$colorQuarter !== void 0 ? _options$colorQuarter : Color3.Green();\n const colorHalf = (_options$colorHalf = options.colorHalf) !== null && _options$colorHalf !== void 0 ? _options$colorHalf : Color3.Yellow();\n const colorFull = (_options$colorFull = options.colorFull) !== null && _options$colorFull !== void 0 ? _options$colorFull : Color3.Red();\n const targetBoneIndex = (_options$targetBoneIn = options.targetBoneIndex) !== null && _options$targetBoneIn !== void 0 ? _options$targetBoneIn : 0;\n Effect.ShadersStore[\"boneWeights:\" + skeleton.name + \"VertexShader\"] = `precision highp float;\n\n attribute vec3 position;\n attribute vec2 uv;\n\n uniform mat4 view;\n uniform mat4 projection;\n uniform mat4 worldViewProjection;\n\n #include<bonesDeclaration>\n #if NUM_BONE_INFLUENCERS == 0\n attribute vec4 matricesIndices;\n attribute vec4 matricesWeights;\n #endif\n #include<bakedVertexAnimationDeclaration>\n\n #include<instancesDeclaration>\n\n varying vec3 vColor;\n\n uniform vec3 colorBase;\n uniform vec3 colorZero;\n uniform vec3 colorQuarter;\n uniform vec3 colorHalf;\n uniform vec3 colorFull;\n\n uniform float targetBoneIndex;\n\n void main() {\n vec3 positionUpdated = position;\n\n #include<instancesVertex>\n #include<bonesVertex>\n #include<bakedVertexAnimation>\n\n vec4 worldPos = finalWorld * vec4(positionUpdated, 1.0);\n\n vec3 color = colorBase;\n float totalWeight = 0.;\n if(matricesIndices[0] == targetBoneIndex && matricesWeights[0] > 0.){\n totalWeight += matricesWeights[0];\n }\n if(matricesIndices[1] == targetBoneIndex && matricesWeights[1] > 0.){\n totalWeight += matricesWeights[1];\n }\n if(matricesIndices[2] == targetBoneIndex && matricesWeights[2] > 0.){\n totalWeight += matricesWeights[2];\n }\n if(matricesIndices[3] == targetBoneIndex && matricesWeights[3] > 0.){\n totalWeight += matricesWeights[3];\n }\n\n color = mix(color, colorZero, smoothstep(0., 0.25, totalWeight));\n color = mix(color, colorQuarter, smoothstep(0.25, 0.5, totalWeight));\n color = mix(color, colorHalf, smoothstep(0.5, 0.75, totalWeight));\n color = mix(color, colorFull, smoothstep(0.75, 1.0, totalWeight));\n vColor = color;\n\n gl_Position = projection * view * worldPos;\n }`;\n Effect.ShadersStore[\"boneWeights:\" + skeleton.name + \"FragmentShader\"] = `\n precision highp float;\n varying vec3 vPosition;\n\n varying vec3 vColor;\n\n void main() {\n vec4 color = vec4(vColor, 1.0);\n gl_FragColor = color;\n }\n `;\n const shader = new ShaderMaterial(\"boneWeight:\" + skeleton.name, scene, {\n vertex: \"boneWeights:\" + skeleton.name,\n fragment: \"boneWeights:\" + skeleton.name\n }, {\n attributes: [\"position\", \"normal\", \"matricesIndices\", \"matricesWeights\"],\n uniforms: [\"world\", \"worldView\", \"worldViewProjection\", \"view\", \"projection\", \"viewProjection\", \"colorBase\", \"colorZero\", \"colorQuarter\", \"colorHalf\", \"colorFull\", \"targetBoneIndex\"]\n });\n shader.setColor3(\"colorBase\", colorBase);\n shader.setColor3(\"colorZero\", colorZero);\n shader.setColor3(\"colorQuarter\", colorQuarter);\n shader.setColor3(\"colorHalf\", colorHalf);\n shader.setColor3(\"colorFull\", colorFull);\n shader.setFloat(\"targetBoneIndex\", targetBoneIndex);\n shader.getClassName = () => {\n return \"BoneWeightShader\";\n };\n shader.transparencyMode = Material.MATERIAL_OPAQUE;\n return shader;\n }\n /** public static method to create a BoneWeight Shader\n * @param options The constructor options\n * @param scene The scene that the shader is scoped to\n * @returns The created ShaderMaterial\n */\n static CreateSkeletonMapShader(options, scene) {\n var _options$colorMap;\n const skeleton = options.skeleton;\n const colorMap = (_options$colorMap = options.colorMap) !== null && _options$colorMap !== void 0 ? _options$colorMap : [{\n color: new Color3(1, 0.38, 0.18),\n location: 0\n }, {\n color: new Color3(0.59, 0.18, 1.0),\n location: 0.2\n }, {\n color: new Color3(0.59, 1, 0.18),\n location: 0.4\n }, {\n color: new Color3(1, 0.87, 0.17),\n location: 0.6\n }, {\n color: new Color3(1, 0.17, 0.42),\n location: 0.8\n }, {\n color: new Color3(0.17, 0.68, 1.0),\n location: 1.0\n }];\n const bufferWidth = skeleton.bones.length + 1;\n const colorMapBuffer = SkeletonViewer._CreateBoneMapColorBuffer(bufferWidth, colorMap, scene);\n const shader = new ShaderMaterial(\"boneWeights:\" + skeleton.name, scene, {\n vertexSource: `precision highp float;\n\n attribute vec3 position;\n attribute vec2 uv;\n\n uniform mat4 view;\n uniform mat4 projection;\n uniform mat4 worldViewProjection;\n uniform float colorMap[` + skeleton.bones.length * 4 + `];\n\n #include<bonesDeclaration>\n #if NUM_BONE_INFLUENCERS == 0\n attribute vec4 matricesIndices;\n attribute vec4 matricesWeights;\n #endif\n #include<bakedVertexAnimationDeclaration>\n #include<instancesDeclaration>\n\n varying vec3 vColor;\n\n void main() {\n vec3 positionUpdated = position;\n\n #include<instancesVertex>\n #include<bonesVertex>\n #include<bakedVertexAnimation>\n\n vec3 color = vec3(0.);\n bool first = true;\n\n for (int i = 0; i < 4; i++) {\n int boneIdx = int(matricesIndices[i]);\n float boneWgt = matricesWeights[i];\n\n vec3 c = vec3(colorMap[boneIdx * 4 + 0], colorMap[boneIdx * 4 + 1], colorMap[boneIdx * 4 + 2]);\n\n if (boneWgt > 0.) {\n if (first) {\n first = false;\n color = c;\n } else {\n color = mix(color, c, boneWgt);\n }\n }\n }\n\n vColor = color;\n\n vec4 worldPos = finalWorld * vec4(positionUpdated, 1.0);\n\n gl_Position = projection * view * worldPos;\n }`,\n fragmentSource: `\n precision highp float;\n varying vec3 vColor;\n\n void main() {\n vec4 color = vec4( vColor, 1.0 );\n gl_FragColor = color;\n }\n `\n }, {\n attributes: [\"position\", \"normal\", \"matricesIndices\", \"matricesWeights\"],\n uniforms: [\"world\", \"worldView\", \"worldViewProjection\", \"view\", \"projection\", \"viewProjection\", \"colorMap\"]\n });\n shader.setFloats(\"colorMap\", colorMapBuffer);\n shader.getClassName = () => {\n return \"SkeletonMapShader\";\n };\n shader.transparencyMode = Material.MATERIAL_OPAQUE;\n return shader;\n }\n /** private static method to create a BoneWeight Shader\n * @param size The size of the buffer to create (usually the bone count)\n * @param colorMap The gradient data to generate\n * @param scene The scene that the shader is scoped to\n * @returns an Array of floats from the color gradient values\n */\n static _CreateBoneMapColorBuffer(size, colorMap, scene) {\n const tempGrad = new DynamicTexture(\"temp\", {\n width: size,\n height: 1\n }, scene, false);\n const ctx = tempGrad.getContext();\n const grad = ctx.createLinearGradient(0, 0, size, 0);\n colorMap.forEach(stop => {\n grad.addColorStop(stop.location, stop.color.toHexString());\n });\n ctx.fillStyle = grad;\n ctx.fillRect(0, 0, size, 1);\n tempGrad.update();\n const buffer = [];\n const data = ctx.getImageData(0, 0, size, 1).data;\n const rUnit = 1 / 255;\n for (let i = 0; i < data.length; i++) {\n buffer.push(data[i] * rUnit);\n }\n tempGrad.dispose();\n return buffer;\n }\n /** Gets the Scene. */\n get scene() {\n return this._scene;\n }\n /** Gets the utilityLayer. */\n get utilityLayer() {\n return this._utilityLayer;\n }\n /** Checks Ready Status. */\n get isReady() {\n return this._ready;\n }\n /** Sets Ready Status. */\n set ready(value) {\n this._ready = value;\n }\n /** Gets the debugMesh */\n get debugMesh() {\n return this._debugMesh;\n }\n /** Sets the debugMesh */\n set debugMesh(value) {\n this._debugMesh = value;\n }\n /** Gets the displayMode */\n get displayMode() {\n return this.options.displayMode || SkeletonViewer.DISPLAY_LINES;\n }\n /** Sets the displayMode */\n set displayMode(value) {\n if (value > SkeletonViewer.DISPLAY_SPHERE_AND_SPURS) {\n value = SkeletonViewer.DISPLAY_LINES;\n }\n this.options.displayMode = value;\n }\n /**\n * Creates a new SkeletonViewer\n * @param skeleton defines the skeleton to render\n * @param mesh defines the mesh attached to the skeleton\n * @param scene defines the hosting scene\n * @param autoUpdateBonesMatrices defines a boolean indicating if bones matrices must be forced to update before rendering (true by default)\n * @param renderingGroupId defines the rendering group id to use with the viewer\n * @param options All of the extra constructor options for the SkeletonViewer\n */\n constructor( /** defines the skeleton to render */\n skeleton, /** defines the mesh attached to the skeleton */\n mesh, /** The Scene scope*/\n scene, /** [true] defines a boolean indicating if bones matrices must be forced to update before rendering (true by default) */\n autoUpdateBonesMatrices = true, /** [3] defines the rendering group id to use with the viewer */\n renderingGroupId = 3, /** [Object] is the options for the viewer */\n options = {}) {\n var _options$pauseAnimati, _options$returnToRest, _options$displayMode, _options$displayOptio, _options$displayOptio2, _options$displayOptio3, _options$displayOptio4, _options$displayOptio5, _options$displayOptio6, _options$displayOptio7, _options$displayOptio8, _options$displayOptio9, _options$computeBones, _options$useAllBones;\n this.skeleton = skeleton;\n this.mesh = mesh;\n this.autoUpdateBonesMatrices = autoUpdateBonesMatrices;\n this.renderingGroupId = renderingGroupId;\n this.options = options;\n /** Gets or sets the color used to render the skeleton */\n this.color = Color3.White();\n /** Array of the points of the skeleton fo the line view. */\n this._debugLines = new Array();\n /** The local axes Meshes. */\n this._localAxes = null;\n /** If SkeletonViewer is enabled. */\n this._isEnabled = true;\n /** SkeletonViewer render observable. */\n this._obs = null;\n this._scene = scene;\n this._ready = false;\n //Defaults\n options.pauseAnimations = (_options$pauseAnimati = options.pauseAnimations) !== null && _options$pauseAnimati !== void 0 ? _options$pauseAnimati : true;\n options.returnToRest = (_options$returnToRest = options.returnToRest) !== null && _options$returnToRest !== void 0 ? _options$returnToRest : false;\n options.displayMode = (_options$displayMode = options.displayMode) !== null && _options$displayMode !== void 0 ? _options$displayMode : SkeletonViewer.DISPLAY_LINES;\n options.displayOptions = (_options$displayOptio = options.displayOptions) !== null && _options$displayOptio !== void 0 ? _options$displayOptio : {};\n options.displayOptions.midStep = (_options$displayOptio2 = options.displayOptions.midStep) !== null && _options$displayOptio2 !== void 0 ? _options$displayOptio2 : 0.235;\n options.displayOptions.midStepFactor = (_options$displayOptio3 = options.displayOptions.midStepFactor) !== null && _options$displayOptio3 !== void 0 ? _options$displayOptio3 : 0.155;\n options.displayOptions.sphereBaseSize = (_options$displayOptio4 = options.displayOptions.sphereBaseSize) !== null && _options$displayOptio4 !== void 0 ? _options$displayOptio4 : 0.15;\n options.displayOptions.sphereScaleUnit = (_options$displayOptio5 = options.displayOptions.sphereScaleUnit) !== null && _options$displayOptio5 !== void 0 ? _options$displayOptio5 : 2;\n options.displayOptions.sphereFactor = (_options$displayOptio6 = options.displayOptions.sphereFactor) !== null && _options$displayOptio6 !== void 0 ? _options$displayOptio6 : 0.865;\n options.displayOptions.spurFollowsChild = (_options$displayOptio7 = options.displayOptions.spurFollowsChild) !== null && _options$displayOptio7 !== void 0 ? _options$displayOptio7 : false;\n options.displayOptions.showLocalAxes = (_options$displayOptio8 = options.displayOptions.showLocalAxes) !== null && _options$displayOptio8 !== void 0 ? _options$displayOptio8 : false;\n options.displayOptions.localAxesSize = (_options$displayOptio9 = options.displayOptions.localAxesSize) !== null && _options$displayOptio9 !== void 0 ? _options$displayOptio9 : 0.075;\n options.computeBonesUsingShaders = (_options$computeBones = options.computeBonesUsingShaders) !== null && _options$computeBones !== void 0 ? _options$computeBones : true;\n options.useAllBones = (_options$useAllBones = options.useAllBones) !== null && _options$useAllBones !== void 0 ? _options$useAllBones : true;\n this._boneIndices = new Set();\n if (!options.useAllBones) {\n const initialMeshBoneIndices = mesh === null || mesh === void 0 ? void 0 : mesh.getVerticesData(VertexBuffer.MatricesIndicesKind);\n const initialMeshBoneWeights = mesh === null || mesh === void 0 ? void 0 : mesh.getVerticesData(VertexBuffer.MatricesWeightsKind);\n if (initialMeshBoneIndices && initialMeshBoneWeights) {\n for (let i = 0; i < initialMeshBoneIndices.length; ++i) {\n const index = initialMeshBoneIndices[i],\n weight = initialMeshBoneWeights[i];\n if (weight !== 0) {\n this._boneIndices.add(index);\n }\n }\n }\n }\n /* Create Utility Layer */\n this._utilityLayer = new UtilityLayerRenderer(this._scene, false);\n this._utilityLayer.pickUtilitySceneFirst = false;\n this._utilityLayer.utilityLayerScene.autoClearDepthAndStencil = true;\n let displayMode = this.options.displayMode || 0;\n if (displayMode > SkeletonViewer.DISPLAY_SPHERE_AND_SPURS) {\n displayMode = SkeletonViewer.DISPLAY_LINES;\n }\n this.displayMode = displayMode;\n //Prep the Systems\n this.update();\n this._bindObs();\n }\n /** The Dynamic bindings for the update functions */\n _bindObs() {\n switch (this.displayMode) {\n case SkeletonViewer.DISPLAY_LINES:\n {\n this._obs = this.scene.onBeforeRenderObservable.add(() => {\n this._displayLinesUpdate();\n });\n break;\n }\n }\n }\n /** Update the viewer to sync with current skeleton state, only used to manually update. */\n update() {\n switch (this.displayMode) {\n case SkeletonViewer.DISPLAY_LINES:\n {\n this._displayLinesUpdate();\n break;\n }\n case SkeletonViewer.DISPLAY_SPHERES:\n {\n this._buildSpheresAndSpurs(true);\n break;\n }\n case SkeletonViewer.DISPLAY_SPHERE_AND_SPURS:\n {\n this._buildSpheresAndSpurs(false);\n break;\n }\n }\n this._buildLocalAxes();\n }\n /** Gets or sets a boolean indicating if the viewer is enabled */\n set isEnabled(value) {\n if (this.isEnabled === value) {\n return;\n }\n this._isEnabled = value;\n if (this.debugMesh) {\n this.debugMesh.setEnabled(value);\n }\n if (value && !this._obs) {\n this._bindObs();\n } else if (!value && this._obs) {\n this.scene.onBeforeRenderObservable.remove(this._obs);\n this._obs = null;\n }\n }\n get isEnabled() {\n return this._isEnabled;\n }\n _getBonePosition(position, bone, meshMat, x = 0, y = 0, z = 0) {\n const tmat = TmpVectors.Matrix[0];\n const parentBone = bone.getParent();\n tmat.copyFrom(bone.getLocalMatrix());\n if (x !== 0 || y !== 0 || z !== 0) {\n const tmat2 = TmpVectors.Matrix[1];\n Matrix.IdentityToRef(tmat2);\n tmat2.setTranslationFromFloats(x, y, z);\n tmat2.multiplyToRef(tmat, tmat);\n }\n if (parentBone) {\n tmat.multiplyToRef(parentBone.getAbsoluteMatrix(), tmat);\n }\n tmat.multiplyToRef(meshMat, tmat);\n position.x = tmat.m[12];\n position.y = tmat.m[13];\n position.z = tmat.m[14];\n }\n _getLinesForBonesWithLength(bones, mesh) {\n const len = bones.length;\n let matrix;\n let meshPos;\n if (mesh) {\n matrix = mesh.getWorldMatrix();\n meshPos = mesh.position;\n } else {\n matrix = new Matrix();\n meshPos = bones[0].position;\n }\n let idx = 0;\n for (let i = 0; i < len; i++) {\n const bone = bones[i];\n let points = this._debugLines[idx];\n if (bone._index === -1 || !this._boneIndices.has(bone.getIndex()) && !this.options.useAllBones) {\n continue;\n }\n if (!points) {\n points = [Vector3.Zero(), Vector3.Zero()];\n this._debugLines[idx] = points;\n }\n this._getBonePosition(points[0], bone, matrix);\n this._getBonePosition(points[1], bone, matrix, 0, bone.length, 0);\n points[0].subtractInPlace(meshPos);\n points[1].subtractInPlace(meshPos);\n idx++;\n }\n }\n _getLinesForBonesNoLength(bones) {\n const len = bones.length;\n let boneNum = 0;\n const mesh = this.mesh;\n let transformNode;\n let meshPos;\n if (mesh) {\n transformNode = mesh;\n meshPos = mesh.position;\n } else {\n transformNode = new TransformNode(\"\");\n meshPos = bones[0].position;\n }\n for (let i = len - 1; i >= 0; i--) {\n const childBone = bones[i];\n const parentBone = childBone.getParent();\n if (!parentBone || !this._boneIndices.has(childBone.getIndex()) && !this.options.useAllBones) {\n continue;\n }\n let points = this._debugLines[boneNum];\n if (!points) {\n points = [Vector3.Zero(), Vector3.Zero()];\n this._debugLines[boneNum] = points;\n }\n childBone.getAbsolutePositionToRef(transformNode, points[0]);\n parentBone.getAbsolutePositionToRef(transformNode, points[1]);\n points[0].subtractInPlace(meshPos);\n points[1].subtractInPlace(meshPos);\n boneNum++;\n }\n if (!mesh) {\n transformNode.dispose();\n }\n }\n /**\n * function to revert the mesh and scene back to the initial state.\n * @param animationState\n */\n _revert(animationState) {\n if (this.options.pauseAnimations) {\n this.scene.animationsEnabled = animationState;\n this.utilityLayer.utilityLayerScene.animationsEnabled = animationState;\n }\n }\n /**\n * function to get the absolute bind pose of a bone by accumulating transformations up the bone hierarchy.\n * @param bone\n * @param matrix\n */\n _getAbsoluteBindPoseToRef(bone, matrix) {\n if (bone === null || bone._index === -1) {\n matrix.copyFrom(Matrix.Identity());\n return;\n }\n this._getAbsoluteBindPoseToRef(bone.getParent(), matrix);\n bone.getBindMatrix().multiplyToRef(matrix, matrix);\n return;\n }\n _createSpur(anchorPoint, bone, childPoint, childBone, displayOptions, utilityLayerScene) {\n const dir = childPoint.subtract(anchorPoint);\n const h = dir.length();\n const up = dir.normalize().scale(h);\n const midStep = displayOptions.midStep || 0.165;\n const midStepFactor = displayOptions.midStepFactor || 0.215;\n const up0 = up.scale(midStep);\n const spur = ExtrudeShapeCustom(\"skeletonViewer\", {\n shape: [new Vector3(1, -1, 0), new Vector3(1, 1, 0), new Vector3(-1, 1, 0), new Vector3(-1, -1, 0), new Vector3(1, -1, 0)],\n path: [Vector3.Zero(), up0, up],\n scaleFunction: i => {\n switch (i) {\n case 0:\n case 2:\n return 0;\n case 1:\n return h * midStepFactor;\n }\n return 0;\n },\n sideOrientation: Mesh.DEFAULTSIDE,\n updatable: false\n }, utilityLayerScene);\n const numVertices = spur.getTotalVertices();\n const mwk = [],\n mik = [];\n for (let i = 0; i < numVertices; i++) {\n mwk.push(1, 0, 0, 0);\n // Select verts at end of spur (ie vert 10 to 14) and bind to child\n // bone if spurFollowsChild is enabled.\n if (childBone && displayOptions.spurFollowsChild && i > 9) {\n mik.push(childBone.getIndex(), 0, 0, 0);\n } else {\n mik.push(bone.getIndex(), 0, 0, 0);\n }\n }\n spur.position = anchorPoint.clone();\n spur.setVerticesData(VertexBuffer.MatricesWeightsKind, mwk, false);\n spur.setVerticesData(VertexBuffer.MatricesIndicesKind, mik, false);\n spur.convertToFlatShadedMesh();\n return spur;\n }\n _getBoundingSphereForBone(boneIndex) {\n if (!this.mesh) {\n return null;\n }\n const positions = this.mesh.getVerticesData(VertexBuffer.PositionKind);\n const indices = this.mesh.getIndices();\n const boneWeights = this.mesh.getVerticesData(VertexBuffer.MatricesWeightsKind);\n const boneIndices = this.mesh.getVerticesData(VertexBuffer.MatricesIndicesKind);\n if (!positions || !indices || !boneWeights || !boneIndices) {\n return null;\n }\n const min = new Vector3(Number.MAX_VALUE, Number.MAX_VALUE, Number.MAX_VALUE);\n const max = new Vector3(-Number.MAX_VALUE, -Number.MAX_VALUE, -Number.MAX_VALUE);\n let found = 0;\n for (let i = 0; i < indices.length; ++i) {\n const vertexIndex = indices[i];\n for (let b = 0; b < 4; ++b) {\n const bIndex = boneIndices[vertexIndex * 4 + b];\n const bWeight = boneWeights[vertexIndex * 4 + b];\n if (bIndex === boneIndex && bWeight > 1e-5) {\n Vector3.FromArrayToRef(positions, vertexIndex * 3, TmpVectors.Vector3[0]);\n min.minimizeInPlace(TmpVectors.Vector3[0]);\n max.maximizeInPlace(TmpVectors.Vector3[0]);\n found++;\n break;\n }\n }\n }\n return found > 1 ? {\n center: Vector3.Center(min, max),\n radius: Vector3.Distance(min, max) / 2\n } : null;\n }\n /**\n * function to build and bind sphere joint points and spur bone representations.\n * @param spheresOnly\n */\n _buildSpheresAndSpurs(spheresOnly = true) {\n var _this$utilityLayer;\n if (this._debugMesh) {\n this._debugMesh.dispose();\n this._debugMesh = null;\n this.ready = false;\n }\n this._ready = false;\n const utilityLayerScene = (_this$utilityLayer = this.utilityLayer) === null || _this$utilityLayer === void 0 ? void 0 : _this$utilityLayer.utilityLayerScene;\n const bones = this.skeleton.bones;\n const spheres = [];\n const spurs = [];\n const animationState = this.scene.animationsEnabled;\n try {\n if (this.options.pauseAnimations) {\n this.scene.animationsEnabled = false;\n utilityLayerScene.animationsEnabled = false;\n }\n if (this.options.returnToRest) {\n this.skeleton.returnToRest();\n }\n if (this.autoUpdateBonesMatrices) {\n this.skeleton.computeAbsoluteMatrices();\n }\n let longestBoneLength = Number.NEGATIVE_INFINITY;\n const displayOptions = this.options.displayOptions || {};\n for (let i = 0; i < bones.length; i++) {\n const bone = bones[i];\n if (bone._index === -1 || !this._boneIndices.has(bone.getIndex()) && !this.options.useAllBones) {\n continue;\n }\n const boneAbsoluteBindPoseTransform = new Matrix();\n this._getAbsoluteBindPoseToRef(bone, boneAbsoluteBindPoseTransform);\n const anchorPoint = new Vector3();\n boneAbsoluteBindPoseTransform.decompose(undefined, undefined, anchorPoint);\n if (bone.children.length > 0) {\n bone.children.forEach(bc => {\n const childAbsoluteBindPoseTransform = new Matrix();\n bc.getLocalMatrix().multiplyToRef(boneAbsoluteBindPoseTransform, childAbsoluteBindPoseTransform);\n const childPoint = new Vector3();\n childAbsoluteBindPoseTransform.decompose(undefined, undefined, childPoint);\n const distanceFromParent = Vector3.Distance(anchorPoint, childPoint);\n if (distanceFromParent > longestBoneLength) {\n longestBoneLength = distanceFromParent;\n }\n if (spheresOnly) {\n return;\n }\n spurs.push(this._createSpur(anchorPoint, bone, childPoint, bc, displayOptions, utilityLayerScene));\n });\n } else {\n const boundingSphere = this._getBoundingSphereForBone(bone.getIndex());\n if (boundingSphere) {\n if (boundingSphere.radius > longestBoneLength) {\n longestBoneLength = boundingSphere.radius;\n }\n if (!spheresOnly) {\n let childPoint;\n const parentBone = bone.getParent();\n if (parentBone) {\n this._getAbsoluteBindPoseToRef(parentBone, boneAbsoluteBindPoseTransform);\n boneAbsoluteBindPoseTransform.decompose(undefined, undefined, TmpVectors.Vector3[0]);\n childPoint = anchorPoint.subtract(TmpVectors.Vector3[0]).normalize().scale(boundingSphere.radius).add(anchorPoint);\n } else {\n childPoint = boundingSphere.center.subtract(anchorPoint).normalize().scale(boundingSphere.radius).add(anchorPoint);\n }\n spurs.push(this._createSpur(anchorPoint, bone, childPoint, null, displayOptions, utilityLayerScene));\n }\n }\n }\n const sphereBaseSize = displayOptions.sphereBaseSize || 0.2;\n const sphere = CreateSphere(\"skeletonViewer\", {\n segments: 6,\n diameter: sphereBaseSize,\n updatable: true\n }, utilityLayerScene);\n const numVertices = sphere.getTotalVertices();\n const mwk = [],\n mik = [];\n for (let i = 0; i < numVertices; i++) {\n mwk.push(1, 0, 0, 0);\n mik.push(bone.getIndex(), 0, 0, 0);\n }\n sphere.setVerticesData(VertexBuffer.MatricesWeightsKind, mwk, false);\n sphere.setVerticesData(VertexBuffer.MatricesIndicesKind, mik, false);\n sphere.position = anchorPoint.clone();\n spheres.push([sphere, bone]);\n }\n const sphereScaleUnit = displayOptions.sphereScaleUnit || 2;\n const sphereFactor = displayOptions.sphereFactor || 0.85;\n const meshes = [];\n for (let i = 0; i < spheres.length; i++) {\n const [sphere, bone] = spheres[i];\n const scale = 1 / (sphereScaleUnit / longestBoneLength);\n let _stepsOut = 0;\n let _b = bone;\n while (_b.getParent() && _b.getParent().getIndex() !== -1) {\n _stepsOut++;\n _b = _b.getParent();\n }\n sphere.scaling.scaleInPlace(scale * Math.pow(sphereFactor, _stepsOut));\n meshes.push(sphere);\n }\n this.debugMesh = Mesh.MergeMeshes(meshes.concat(spurs), true, true);\n if (this.debugMesh) {\n var _this$options$compute;\n this.debugMesh.renderingGroupId = this.renderingGroupId;\n this.debugMesh.skeleton = this.skeleton;\n this.debugMesh.parent = this.mesh;\n this.debugMesh.computeBonesUsingShaders = (_this$options$compute = this.options.computeBonesUsingShaders) !== null && _this$options$compute !== void 0 ? _this$options$compute : true;\n this.debugMesh.alwaysSelectAsActiveMesh = true;\n }\n const light = this.utilityLayer._getSharedGizmoLight();\n light.intensity = 0.7;\n this._revert(animationState);\n this.ready = true;\n } catch (err) {\n Logger.Error(err);\n this._revert(animationState);\n this.dispose();\n }\n }\n _buildLocalAxes() {\n var _this$options$compute2;\n if (this._localAxes) {\n this._localAxes.dispose();\n }\n this._localAxes = null;\n const displayOptions = this.options.displayOptions || {};\n if (!displayOptions.showLocalAxes) {\n return;\n }\n const targetScene = this._utilityLayer.utilityLayerScene;\n const size = displayOptions.localAxesSize || 0.075;\n const lines = [];\n const colors = [];\n const red = new Color4(1, 0, 0, 1);\n const green = new Color4(0, 1, 0, 1);\n const blue = new Color4(0, 0, 1, 1);\n const mwk = [];\n const mik = [];\n const vertsPerBone = 6;\n for (const i in this.skeleton.bones) {\n const bone = this.skeleton.bones[i];\n if (bone._index === -1 || !this._boneIndices.has(bone.getIndex()) && !this.options.useAllBones) {\n continue;\n }\n const boneAbsoluteBindPoseTransform = new Matrix();\n const boneOrigin = new Vector3();\n this._getAbsoluteBindPoseToRef(bone, boneAbsoluteBindPoseTransform);\n boneAbsoluteBindPoseTransform.decompose(undefined, TmpVectors.Quaternion[0], boneOrigin);\n const m = new Matrix();\n TmpVectors.Quaternion[0].toRotationMatrix(m);\n const boneAxisX = Vector3.TransformCoordinates(new Vector3(0 + size, 0, 0), m);\n const boneAxisY = Vector3.TransformCoordinates(new Vector3(0, 0 + size, 0), m);\n const boneAxisZ = Vector3.TransformCoordinates(new Vector3(0, 0, 0 + size), m);\n const axisX = [boneOrigin, boneOrigin.add(boneAxisX)];\n const axisY = [boneOrigin, boneOrigin.add(boneAxisY)];\n const axisZ = [boneOrigin, boneOrigin.add(boneAxisZ)];\n const linePoints = [axisX, axisY, axisZ];\n const lineColors = [[red, red], [green, green], [blue, blue]];\n lines.push(...linePoints);\n colors.push(...lineColors);\n for (let j = 0; j < vertsPerBone; j++) {\n mwk.push(1, 0, 0, 0);\n mik.push(bone.getIndex(), 0, 0, 0);\n }\n }\n this._localAxes = CreateLineSystem(\"localAxes\", {\n lines: lines,\n colors: colors,\n updatable: true\n }, targetScene);\n this._localAxes.setVerticesData(VertexBuffer.MatricesWeightsKind, mwk, false);\n this._localAxes.setVerticesData(VertexBuffer.MatricesIndicesKind, mik, false);\n this._localAxes.skeleton = this.skeleton;\n this._localAxes.renderingGroupId = this.renderingGroupId + 1;\n this._localAxes.parent = this.mesh;\n this._localAxes.computeBonesUsingShaders = (_this$options$compute2 = this.options.computeBonesUsingShaders) !== null && _this$options$compute2 !== void 0 ? _this$options$compute2 : true;\n }\n /** Update the viewer to sync with current skeleton state, only used for the line display. */\n _displayLinesUpdate() {\n if (!this._utilityLayer) {\n return;\n }\n if (this.autoUpdateBonesMatrices) {\n this.skeleton.computeAbsoluteMatrices();\n }\n if (this.skeleton.bones[0].length === undefined) {\n this._getLinesForBonesNoLength(this.skeleton.bones);\n } else {\n this._getLinesForBonesWithLength(this.skeleton.bones, this.mesh);\n }\n const targetScene = this._utilityLayer.utilityLayerScene;\n if (targetScene) {\n if (!this._debugMesh) {\n this._debugMesh = CreateLineSystem(\"\", {\n lines: this._debugLines,\n updatable: true,\n instance: null\n }, targetScene);\n this._debugMesh.renderingGroupId = this.renderingGroupId;\n } else {\n CreateLineSystem(\"\", {\n lines: this._debugLines,\n updatable: true,\n instance: this._debugMesh\n }, targetScene);\n }\n if (this.mesh) {\n this._debugMesh.position.copyFrom(this.mesh.position);\n } else {\n this._debugMesh.position.copyFrom(this.skeleton.bones[0].position);\n }\n this._debugMesh.color = this.color;\n }\n }\n /** Changes the displayMode of the skeleton viewer\n * @param mode The displayMode numerical value\n */\n changeDisplayMode(mode) {\n const wasEnabled = this.isEnabled ? true : false;\n if (this.displayMode !== mode) {\n this.isEnabled = false;\n if (this._debugMesh) {\n this._debugMesh.dispose();\n this._debugMesh = null;\n this.ready = false;\n }\n this.displayMode = mode;\n this.update();\n this._bindObs();\n this.isEnabled = wasEnabled;\n }\n }\n /** Sets a display option of the skeleton viewer\n *\n * | Option | Type | Default | Description |\n * | ---------------- | ------- | ------- | ----------- |\n * | midStep | float | 0.235 | A percentage between a bone and its child that determines the widest part of a spur. Only used when `displayMode` is set to `DISPLAY_SPHERE_AND_SPURS`. |\n * | midStepFactor | float | 0.15 | Mid step width expressed as a factor of the length. A value of 0.5 makes the spur width half of the spur length. Only used when `displayMode` is set to `DISPLAY_SPHERE_AND_SPURS`. |\n * | sphereBaseSize | float | 2 | Sphere base size. Only used when `displayMode` is set to `DISPLAY_SPHERE_AND_SPURS`. |\n * | sphereScaleUnit | float | 0.865 | Sphere scale factor used to scale spheres in relation to the longest bone. Only used when `displayMode` is set to `DISPLAY_SPHERE_AND_SPURS`. |\n * | spurFollowsChild | boolean | false | Whether a spur should attach its far end to the child bone. |\n * | showLocalAxes | boolean | false | Displays local axes on all bones. |\n * | localAxesSize | float | 0.075 | Determines the length of each local axis. |\n *\n * @param option String of the option name\n * @param value The numerical option value\n */\n changeDisplayOptions(option, value) {\n const wasEnabled = this.isEnabled ? true : false;\n this.options.displayOptions[option] = value;\n this.isEnabled = false;\n if (this._debugMesh) {\n this._debugMesh.dispose();\n this._debugMesh = null;\n this.ready = false;\n }\n this.update();\n this._bindObs();\n this.isEnabled = wasEnabled;\n }\n /** Release associated resources */\n dispose() {\n this.isEnabled = false;\n if (this._debugMesh) {\n this._debugMesh.dispose();\n this._debugMesh = null;\n }\n if (this._utilityLayer) {\n this._utilityLayer.dispose();\n this._utilityLayer = null;\n }\n this.ready = false;\n }\n}\n/** public Display constants BABYLON.SkeletonViewer.DISPLAY_LINES */\nSkeletonViewer.DISPLAY_LINES = 0;\n/** public Display constants BABYLON.SkeletonViewer.DISPLAY_SPHERES */\nSkeletonViewer.DISPLAY_SPHERES = 1;\n/** public Display constants BABYLON.SkeletonViewer.DISPLAY_SPHERE_AND_SPURS */\nSkeletonViewer.DISPLAY_SPHERE_AND_SPURS = 2;","map":{"version":3,"names":["Vector3","Matrix","TmpVectors","Color3","Color4","Mesh","CreateLineSystem","UtilityLayerRenderer","Material","ShaderMaterial","DynamicTexture","VertexBuffer","Effect","CreateSphere","ExtrudeShapeCustom","TransformNode","Logger","SkeletonViewer","CreateBoneWeightShader","options","scene","_options$colorBase","_options$colorZero","_options$colorQuarter","_options$colorHalf","_options$colorFull","_options$targetBoneIn","skeleton","colorBase","Black","colorZero","Blue","colorQuarter","Green","colorHalf","Yellow","colorFull","Red","targetBoneIndex","ShadersStore","name","shader","vertex","fragment","attributes","uniforms","setColor3","setFloat","getClassName","transparencyMode","MATERIAL_OPAQUE","CreateSkeletonMapShader","_options$colorMap","colorMap","color","location","bufferWidth","bones","length","colorMapBuffer","_CreateBoneMapColorBuffer","vertexSource","fragmentSource","setFloats","size","tempGrad","width","height","ctx","getContext","grad","createLinearGradient","forEach","stop","addColorStop","toHexString","fillStyle","fillRect","update","buffer","data","getImageData","rUnit","i","push","dispose","_scene","utilityLayer","_utilityLayer","isReady","_ready","ready","value","debugMesh","_debugMesh","displayMode","DISPLAY_LINES","DISPLAY_SPHERE_AND_SPURS","constructor","mesh","autoUpdateBonesMatrices","renderingGroupId","_options$pauseAnimati","_options$returnToRest","_options$displayMode","_options$displayOptio","_options$displayOptio2","_options$displayOptio3","_options$displayOptio4","_options$displayOptio5","_options$displayOptio6","_options$displayOptio7","_options$displayOptio8","_options$displayOptio9","_options$computeBones","_options$useAllBones","White","_debugLines","Array","_localAxes","_isEnabled","_obs","pauseAnimations","returnToRest","displayOptions","midStep","midStepFactor","sphereBaseSize","sphereScaleUnit","sphereFactor","spurFollowsChild","showLocalAxes","localAxesSize","computeBonesUsingShaders","useAllBones","_boneIndices","Set","initialMeshBoneIndices","getVerticesData","MatricesIndicesKind","initialMeshBoneWeights","MatricesWeightsKind","index","weight","add","pickUtilitySceneFirst","utilityLayerScene","autoClearDepthAndStencil","_bindObs","onBeforeRenderObservable","_displayLinesUpdate","DISPLAY_SPHERES","_buildSpheresAndSpurs","_buildLocalAxes","isEnabled","setEnabled","remove","_getBonePosition","position","bone","meshMat","x","y","z","tmat","parentBone","getParent","copyFrom","getLocalMatrix","tmat2","IdentityToRef","setTranslationFromFloats","multiplyToRef","getAbsoluteMatrix","m","_getLinesForBonesWithLength","len","matrix","meshPos","getWorldMatrix","idx","points","_index","has","getIndex","Zero","subtractInPlace","_getLinesForBonesNoLength","boneNum","transformNode","childBone","getAbsolutePositionToRef","_revert","animationState","animationsEnabled","_getAbsoluteBindPoseToRef","Identity","getBindMatrix","_createSpur","anchorPoint","childPoint","dir","subtract","h","up","normalize","scale","up0","spur","shape","path","scaleFunction","sideOrientation","DEFAULTSIDE","updatable","numVertices","getTotalVertices","mwk","mik","clone","setVerticesData","convertToFlatShadedMesh","_getBoundingSphereForBone","boneIndex","positions","PositionKind","indices","getIndices","boneWeights","boneIndices","min","Number","MAX_VALUE","max","found","vertexIndex","b","bIndex","bWeight","FromArrayToRef","minimizeInPlace","maximizeInPlace","center","Center","radius","Distance","spheresOnly","_this$utilityLayer","spheres","spurs","computeAbsoluteMatrices","longestBoneLength","NEGATIVE_INFINITY","boneAbsoluteBindPoseTransform","decompose","undefined","children","bc","childAbsoluteBindPoseTransform","distanceFromParent","boundingSphere","sphere","segments","diameter","meshes","_stepsOut","_b","scaling","scaleInPlace","Math","pow","MergeMeshes","concat","_this$options$compute","parent","alwaysSelectAsActiveMesh","light","_getSharedGizmoLight","intensity","err","Error","_this$options$compute2","targetScene","lines","colors","red","green","blue","vertsPerBone","boneOrigin","Quaternion","toRotationMatrix","boneAxisX","TransformCoordinates","boneAxisY","boneAxisZ","axisX","axisY","axisZ","linePoints","lineColors","j","instance","changeDisplayMode","mode","wasEnabled","changeDisplayOptions","option"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/Debug/skeletonViewer.js"],"sourcesContent":["import { Vector3, Matrix, TmpVectors } from \"../Maths/math.vector.js\";\nimport { Color3, Color4 } from \"../Maths/math.color.js\";\nimport { Mesh } from \"../Meshes/mesh.js\";\nimport { CreateLineSystem } from \"../Meshes/Builders/linesBuilder.js\";\nimport { UtilityLayerRenderer } from \"../Rendering/utilityLayerRenderer.js\";\nimport { Material } from \"../Materials/material.js\";\nimport { ShaderMaterial } from \"../Materials/shaderMaterial.js\";\nimport { DynamicTexture } from \"../Materials/Textures/dynamicTexture.js\";\nimport { VertexBuffer } from \"../Buffers/buffer.js\";\nimport { Effect } from \"../Materials/effect.js\";\nimport { CreateSphere } from \"../Meshes/Builders/sphereBuilder.js\";\nimport { ExtrudeShapeCustom } from \"../Meshes/Builders/shapeBuilder.js\";\nimport { TransformNode } from \"../Meshes/transformNode.js\";\nimport { Logger } from \"../Misc/logger.js\";\n/**\n * Class used to render a debug view of a given skeleton\n * @see http://www.babylonjs-playground.com/#1BZJVJ#8\n */\nexport class SkeletonViewer {\n /** public static method to create a BoneWeight Shader\n * @param options The constructor options\n * @param scene The scene that the shader is scoped to\n * @returns The created ShaderMaterial\n * @see http://www.babylonjs-playground.com/#1BZJVJ#395\n */\n static CreateBoneWeightShader(options, scene) {\n const skeleton = options.skeleton;\n const colorBase = options.colorBase ?? Color3.Black();\n const colorZero = options.colorZero ?? Color3.Blue();\n const colorQuarter = options.colorQuarter ?? Color3.Green();\n const colorHalf = options.colorHalf ?? Color3.Yellow();\n const colorFull = options.colorFull ?? Color3.Red();\n const targetBoneIndex = options.targetBoneIndex ?? 0;\n Effect.ShadersStore[\"boneWeights:\" + skeleton.name + \"VertexShader\"] = `precision highp float;\r\n\r\n attribute vec3 position;\r\n attribute vec2 uv;\r\n\r\n uniform mat4 view;\r\n uniform mat4 projection;\r\n uniform mat4 worldViewProjection;\r\n\r\n #include<bonesDeclaration>\r\n #if NUM_BONE_INFLUENCERS == 0\r\n attribute vec4 matricesIndices;\r\n attribute vec4 matricesWeights;\r\n #endif\r\n #include<bakedVertexAnimationDeclaration>\r\n\r\n #include<instancesDeclaration>\r\n\r\n varying vec3 vColor;\r\n\r\n uniform vec3 colorBase;\r\n uniform vec3 colorZero;\r\n uniform vec3 colorQuarter;\r\n uniform vec3 colorHalf;\r\n uniform vec3 colorFull;\r\n\r\n uniform float targetBoneIndex;\r\n\r\n void main() {\r\n vec3 positionUpdated = position;\r\n\r\n #include<instancesVertex>\r\n #include<bonesVertex>\r\n #include<bakedVertexAnimation>\r\n\r\n vec4 worldPos = finalWorld * vec4(positionUpdated, 1.0);\r\n\r\n vec3 color = colorBase;\r\n float totalWeight = 0.;\r\n if(matricesIndices[0] == targetBoneIndex && matricesWeights[0] > 0.){\r\n totalWeight += matricesWeights[0];\r\n }\r\n if(matricesIndices[1] == targetBoneIndex && matricesWeights[1] > 0.){\r\n totalWeight += matricesWeights[1];\r\n }\r\n if(matricesIndices[2] == targetBoneIndex && matricesWeights[2] > 0.){\r\n totalWeight += matricesWeights[2];\r\n }\r\n if(matricesIndices[3] == targetBoneIndex && matricesWeights[3] > 0.){\r\n totalWeight += matricesWeights[3];\r\n }\r\n\r\n color = mix(color, colorZero, smoothstep(0., 0.25, totalWeight));\r\n color = mix(color, colorQuarter, smoothstep(0.25, 0.5, totalWeight));\r\n color = mix(color, colorHalf, smoothstep(0.5, 0.75, totalWeight));\r\n color = mix(color, colorFull, smoothstep(0.75, 1.0, totalWeight));\r\n vColor = color;\r\n\r\n gl_Position = projection * view * worldPos;\r\n }`;\n Effect.ShadersStore[\"boneWeights:\" + skeleton.name + \"FragmentShader\"] = `\r\n precision highp float;\r\n varying vec3 vPosition;\r\n\r\n varying vec3 vColor;\r\n\r\n void main() {\r\n vec4 color = vec4(vColor, 1.0);\r\n gl_FragColor = color;\r\n }\r\n `;\n const shader = new ShaderMaterial(\"boneWeight:\" + skeleton.name, scene, {\n vertex: \"boneWeights:\" + skeleton.name,\n fragment: \"boneWeights:\" + skeleton.name,\n }, {\n attributes: [\"position\", \"normal\", \"matricesIndices\", \"matricesWeights\"],\n uniforms: [\n \"world\",\n \"worldView\",\n \"worldViewProjection\",\n \"view\",\n \"projection\",\n \"viewProjection\",\n \"colorBase\",\n \"colorZero\",\n \"colorQuarter\",\n \"colorHalf\",\n \"colorFull\",\n \"targetBoneIndex\",\n ],\n });\n shader.setColor3(\"colorBase\", colorBase);\n shader.setColor3(\"colorZero\", colorZero);\n shader.setColor3(\"colorQuarter\", colorQuarter);\n shader.setColor3(\"colorHalf\", colorHalf);\n shader.setColor3(\"colorFull\", colorFull);\n shader.setFloat(\"targetBoneIndex\", targetBoneIndex);\n shader.getClassName = () => {\n return \"BoneWeightShader\";\n };\n shader.transparencyMode = Material.MATERIAL_OPAQUE;\n return shader;\n }\n /** public static method to create a BoneWeight Shader\n * @param options The constructor options\n * @param scene The scene that the shader is scoped to\n * @returns The created ShaderMaterial\n */\n static CreateSkeletonMapShader(options, scene) {\n const skeleton = options.skeleton;\n const colorMap = options.colorMap ?? [\n {\n color: new Color3(1, 0.38, 0.18),\n location: 0,\n },\n {\n color: new Color3(0.59, 0.18, 1.0),\n location: 0.2,\n },\n {\n color: new Color3(0.59, 1, 0.18),\n location: 0.4,\n },\n {\n color: new Color3(1, 0.87, 0.17),\n location: 0.6,\n },\n {\n color: new Color3(1, 0.17, 0.42),\n location: 0.8,\n },\n {\n color: new Color3(0.17, 0.68, 1.0),\n location: 1.0,\n },\n ];\n const bufferWidth = skeleton.bones.length + 1;\n const colorMapBuffer = SkeletonViewer._CreateBoneMapColorBuffer(bufferWidth, colorMap, scene);\n const shader = new ShaderMaterial(\"boneWeights:\" + skeleton.name, scene, {\n vertexSource: `precision highp float;\r\n\r\n attribute vec3 position;\r\n attribute vec2 uv;\r\n\r\n uniform mat4 view;\r\n uniform mat4 projection;\r\n uniform mat4 worldViewProjection;\r\n uniform float colorMap[` +\n skeleton.bones.length * 4 +\n `];\r\n\r\n #include<bonesDeclaration>\r\n #if NUM_BONE_INFLUENCERS == 0\r\n attribute vec4 matricesIndices;\r\n attribute vec4 matricesWeights;\r\n #endif\r\n #include<bakedVertexAnimationDeclaration>\r\n #include<instancesDeclaration>\r\n\r\n varying vec3 vColor;\r\n\r\n void main() {\r\n vec3 positionUpdated = position;\r\n\r\n #include<instancesVertex>\r\n #include<bonesVertex>\r\n #include<bakedVertexAnimation>\r\n\r\n vec3 color = vec3(0.);\r\n bool first = true;\r\n\r\n for (int i = 0; i < 4; i++) {\r\n int boneIdx = int(matricesIndices[i]);\r\n float boneWgt = matricesWeights[i];\r\n\r\n vec3 c = vec3(colorMap[boneIdx * 4 + 0], colorMap[boneIdx * 4 + 1], colorMap[boneIdx * 4 + 2]);\r\n\r\n if (boneWgt > 0.) {\r\n if (first) {\r\n first = false;\r\n color = c;\r\n } else {\r\n color = mix(color, c, boneWgt);\r\n }\r\n }\r\n }\r\n\r\n vColor = color;\r\n\r\n vec4 worldPos = finalWorld * vec4(positionUpdated, 1.0);\r\n\r\n gl_Position = projection * view * worldPos;\r\n }`,\n fragmentSource: `\r\n precision highp float;\r\n varying vec3 vColor;\r\n\r\n void main() {\r\n vec4 color = vec4( vColor, 1.0 );\r\n gl_FragColor = color;\r\n }\r\n `,\n }, {\n attributes: [\"position\", \"normal\", \"matricesIndices\", \"matricesWeights\"],\n uniforms: [\"world\", \"worldView\", \"worldViewProjection\", \"view\", \"projection\", \"viewProjection\", \"colorMap\"],\n });\n shader.setFloats(\"colorMap\", colorMapBuffer);\n shader.getClassName = () => {\n return \"SkeletonMapShader\";\n };\n shader.transparencyMode = Material.MATERIAL_OPAQUE;\n return shader;\n }\n /** private static method to create a BoneWeight Shader\n * @param size The size of the buffer to create (usually the bone count)\n * @param colorMap The gradient data to generate\n * @param scene The scene that the shader is scoped to\n * @returns an Array of floats from the color gradient values\n */\n static _CreateBoneMapColorBuffer(size, colorMap, scene) {\n const tempGrad = new DynamicTexture(\"temp\", { width: size, height: 1 }, scene, false);\n const ctx = tempGrad.getContext();\n const grad = ctx.createLinearGradient(0, 0, size, 0);\n colorMap.forEach((stop) => {\n grad.addColorStop(stop.location, stop.color.toHexString());\n });\n ctx.fillStyle = grad;\n ctx.fillRect(0, 0, size, 1);\n tempGrad.update();\n const buffer = [];\n const data = ctx.getImageData(0, 0, size, 1).data;\n const rUnit = 1 / 255;\n for (let i = 0; i < data.length; i++) {\n buffer.push(data[i] * rUnit);\n }\n tempGrad.dispose();\n return buffer;\n }\n /** Gets the Scene. */\n get scene() {\n return this._scene;\n }\n /** Gets the utilityLayer. */\n get utilityLayer() {\n return this._utilityLayer;\n }\n /** Checks Ready Status. */\n get isReady() {\n return this._ready;\n }\n /** Sets Ready Status. */\n set ready(value) {\n this._ready = value;\n }\n /** Gets the debugMesh */\n get debugMesh() {\n return this._debugMesh;\n }\n /** Sets the debugMesh */\n set debugMesh(value) {\n this._debugMesh = value;\n }\n /** Gets the displayMode */\n get displayMode() {\n return this.options.displayMode || SkeletonViewer.DISPLAY_LINES;\n }\n /** Sets the displayMode */\n set displayMode(value) {\n if (value > SkeletonViewer.DISPLAY_SPHERE_AND_SPURS) {\n value = SkeletonViewer.DISPLAY_LINES;\n }\n this.options.displayMode = value;\n }\n /**\n * Creates a new SkeletonViewer\n * @param skeleton defines the skeleton to render\n * @param mesh defines the mesh attached to the skeleton\n * @param scene defines the hosting scene\n * @param autoUpdateBonesMatrices defines a boolean indicating if bones matrices must be forced to update before rendering (true by default)\n * @param renderingGroupId defines the rendering group id to use with the viewer\n * @param options All of the extra constructor options for the SkeletonViewer\n */\n constructor(\n /** defines the skeleton to render */\n skeleton, \n /** defines the mesh attached to the skeleton */\n mesh, \n /** The Scene scope*/\n scene, \n /** [true] defines a boolean indicating if bones matrices must be forced to update before rendering (true by default) */\n autoUpdateBonesMatrices = true, \n /** [3] defines the rendering group id to use with the viewer */\n renderingGroupId = 3, \n /** [Object] is the options for the viewer */\n options = {}) {\n this.skeleton = skeleton;\n this.mesh = mesh;\n this.autoUpdateBonesMatrices = autoUpdateBonesMatrices;\n this.renderingGroupId = renderingGroupId;\n this.options = options;\n /** Gets or sets the color used to render the skeleton */\n this.color = Color3.White();\n /** Array of the points of the skeleton fo the line view. */\n this._debugLines = new Array();\n /** The local axes Meshes. */\n this._localAxes = null;\n /** If SkeletonViewer is enabled. */\n this._isEnabled = true;\n /** SkeletonViewer render observable. */\n this._obs = null;\n this._scene = scene;\n this._ready = false;\n //Defaults\n options.pauseAnimations = options.pauseAnimations ?? true;\n options.returnToRest = options.returnToRest ?? false;\n options.displayMode = options.displayMode ?? SkeletonViewer.DISPLAY_LINES;\n options.displayOptions = options.displayOptions ?? {};\n options.displayOptions.midStep = options.displayOptions.midStep ?? 0.235;\n options.displayOptions.midStepFactor = options.displayOptions.midStepFactor ?? 0.155;\n options.displayOptions.sphereBaseSize = options.displayOptions.sphereBaseSize ?? 0.15;\n options.displayOptions.sphereScaleUnit = options.displayOptions.sphereScaleUnit ?? 2;\n options.displayOptions.sphereFactor = options.displayOptions.sphereFactor ?? 0.865;\n options.displayOptions.spurFollowsChild = options.displayOptions.spurFollowsChild ?? false;\n options.displayOptions.showLocalAxes = options.displayOptions.showLocalAxes ?? false;\n options.displayOptions.localAxesSize = options.displayOptions.localAxesSize ?? 0.075;\n options.computeBonesUsingShaders = options.computeBonesUsingShaders ?? true;\n options.useAllBones = options.useAllBones ?? true;\n this._boneIndices = new Set();\n if (!options.useAllBones) {\n const initialMeshBoneIndices = mesh?.getVerticesData(VertexBuffer.MatricesIndicesKind);\n const initialMeshBoneWeights = mesh?.getVerticesData(VertexBuffer.MatricesWeightsKind);\n if (initialMeshBoneIndices && initialMeshBoneWeights) {\n for (let i = 0; i < initialMeshBoneIndices.length; ++i) {\n const index = initialMeshBoneIndices[i], weight = initialMeshBoneWeights[i];\n if (weight !== 0) {\n this._boneIndices.add(index);\n }\n }\n }\n }\n /* Create Utility Layer */\n this._utilityLayer = new UtilityLayerRenderer(this._scene, false);\n this._utilityLayer.pickUtilitySceneFirst = false;\n this._utilityLayer.utilityLayerScene.autoClearDepthAndStencil = true;\n let displayMode = this.options.displayMode || 0;\n if (displayMode > SkeletonViewer.DISPLAY_SPHERE_AND_SPURS) {\n displayMode = SkeletonViewer.DISPLAY_LINES;\n }\n this.displayMode = displayMode;\n //Prep the Systems\n this.update();\n this._bindObs();\n }\n /** The Dynamic bindings for the update functions */\n _bindObs() {\n switch (this.displayMode) {\n case SkeletonViewer.DISPLAY_LINES: {\n this._obs = this.scene.onBeforeRenderObservable.add(() => {\n this._displayLinesUpdate();\n });\n break;\n }\n }\n }\n /** Update the viewer to sync with current skeleton state, only used to manually update. */\n update() {\n switch (this.displayMode) {\n case SkeletonViewer.DISPLAY_LINES: {\n this._displayLinesUpdate();\n break;\n }\n case SkeletonViewer.DISPLAY_SPHERES: {\n this._buildSpheresAndSpurs(true);\n break;\n }\n case SkeletonViewer.DISPLAY_SPHERE_AND_SPURS: {\n this._buildSpheresAndSpurs(false);\n break;\n }\n }\n this._buildLocalAxes();\n }\n /** Gets or sets a boolean indicating if the viewer is enabled */\n set isEnabled(value) {\n if (this.isEnabled === value) {\n return;\n }\n this._isEnabled = value;\n if (this.debugMesh) {\n this.debugMesh.setEnabled(value);\n }\n if (value && !this._obs) {\n this._bindObs();\n }\n else if (!value && this._obs) {\n this.scene.onBeforeRenderObservable.remove(this._obs);\n this._obs = null;\n }\n }\n get isEnabled() {\n return this._isEnabled;\n }\n _getBonePosition(position, bone, meshMat, x = 0, y = 0, z = 0) {\n const tmat = TmpVectors.Matrix[0];\n const parentBone = bone.getParent();\n tmat.copyFrom(bone.getLocalMatrix());\n if (x !== 0 || y !== 0 || z !== 0) {\n const tmat2 = TmpVectors.Matrix[1];\n Matrix.IdentityToRef(tmat2);\n tmat2.setTranslationFromFloats(x, y, z);\n tmat2.multiplyToRef(tmat, tmat);\n }\n if (parentBone) {\n tmat.multiplyToRef(parentBone.getAbsoluteMatrix(), tmat);\n }\n tmat.multiplyToRef(meshMat, tmat);\n position.x = tmat.m[12];\n position.y = tmat.m[13];\n position.z = tmat.m[14];\n }\n _getLinesForBonesWithLength(bones, mesh) {\n const len = bones.length;\n let matrix;\n let meshPos;\n if (mesh) {\n matrix = mesh.getWorldMatrix();\n meshPos = mesh.position;\n }\n else {\n matrix = new Matrix();\n meshPos = bones[0].position;\n }\n let idx = 0;\n for (let i = 0; i < len; i++) {\n const bone = bones[i];\n let points = this._debugLines[idx];\n if (bone._index === -1 || (!this._boneIndices.has(bone.getIndex()) && !this.options.useAllBones)) {\n continue;\n }\n if (!points) {\n points = [Vector3.Zero(), Vector3.Zero()];\n this._debugLines[idx] = points;\n }\n this._getBonePosition(points[0], bone, matrix);\n this._getBonePosition(points[1], bone, matrix, 0, bone.length, 0);\n points[0].subtractInPlace(meshPos);\n points[1].subtractInPlace(meshPos);\n idx++;\n }\n }\n _getLinesForBonesNoLength(bones) {\n const len = bones.length;\n let boneNum = 0;\n const mesh = this.mesh;\n let transformNode;\n let meshPos;\n if (mesh) {\n transformNode = mesh;\n meshPos = mesh.position;\n }\n else {\n transformNode = new TransformNode(\"\");\n meshPos = bones[0].position;\n }\n for (let i = len - 1; i >= 0; i--) {\n const childBone = bones[i];\n const parentBone = childBone.getParent();\n if (!parentBone || (!this._boneIndices.has(childBone.getIndex()) && !this.options.useAllBones)) {\n continue;\n }\n let points = this._debugLines[boneNum];\n if (!points) {\n points = [Vector3.Zero(), Vector3.Zero()];\n this._debugLines[boneNum] = points;\n }\n childBone.getAbsolutePositionToRef(transformNode, points[0]);\n parentBone.getAbsolutePositionToRef(transformNode, points[1]);\n points[0].subtractInPlace(meshPos);\n points[1].subtractInPlace(meshPos);\n boneNum++;\n }\n if (!mesh) {\n transformNode.dispose();\n }\n }\n /**\n * function to revert the mesh and scene back to the initial state.\n * @param animationState\n */\n _revert(animationState) {\n if (this.options.pauseAnimations) {\n this.scene.animationsEnabled = animationState;\n this.utilityLayer.utilityLayerScene.animationsEnabled = animationState;\n }\n }\n /**\n * function to get the absolute bind pose of a bone by accumulating transformations up the bone hierarchy.\n * @param bone\n * @param matrix\n */\n _getAbsoluteBindPoseToRef(bone, matrix) {\n if (bone === null || bone._index === -1) {\n matrix.copyFrom(Matrix.Identity());\n return;\n }\n this._getAbsoluteBindPoseToRef(bone.getParent(), matrix);\n bone.getBindMatrix().multiplyToRef(matrix, matrix);\n return;\n }\n _createSpur(anchorPoint, bone, childPoint, childBone, displayOptions, utilityLayerScene) {\n const dir = childPoint.subtract(anchorPoint);\n const h = dir.length();\n const up = dir.normalize().scale(h);\n const midStep = displayOptions.midStep || 0.165;\n const midStepFactor = displayOptions.midStepFactor || 0.215;\n const up0 = up.scale(midStep);\n const spur = ExtrudeShapeCustom(\"skeletonViewer\", {\n shape: [new Vector3(1, -1, 0), new Vector3(1, 1, 0), new Vector3(-1, 1, 0), new Vector3(-1, -1, 0), new Vector3(1, -1, 0)],\n path: [Vector3.Zero(), up0, up],\n scaleFunction: (i) => {\n switch (i) {\n case 0:\n case 2:\n return 0;\n case 1:\n return h * midStepFactor;\n }\n return 0;\n },\n sideOrientation: Mesh.DEFAULTSIDE,\n updatable: false,\n }, utilityLayerScene);\n const numVertices = spur.getTotalVertices();\n const mwk = [], mik = [];\n for (let i = 0; i < numVertices; i++) {\n mwk.push(1, 0, 0, 0);\n // Select verts at end of spur (ie vert 10 to 14) and bind to child\n // bone if spurFollowsChild is enabled.\n if (childBone && displayOptions.spurFollowsChild && i > 9) {\n mik.push(childBone.getIndex(), 0, 0, 0);\n }\n else {\n mik.push(bone.getIndex(), 0, 0, 0);\n }\n }\n spur.position = anchorPoint.clone();\n spur.setVerticesData(VertexBuffer.MatricesWeightsKind, mwk, false);\n spur.setVerticesData(VertexBuffer.MatricesIndicesKind, mik, false);\n spur.convertToFlatShadedMesh();\n return spur;\n }\n _getBoundingSphereForBone(boneIndex) {\n if (!this.mesh) {\n return null;\n }\n const positions = this.mesh.getVerticesData(VertexBuffer.PositionKind);\n const indices = this.mesh.getIndices();\n const boneWeights = this.mesh.getVerticesData(VertexBuffer.MatricesWeightsKind);\n const boneIndices = this.mesh.getVerticesData(VertexBuffer.MatricesIndicesKind);\n if (!positions || !indices || !boneWeights || !boneIndices) {\n return null;\n }\n const min = new Vector3(Number.MAX_VALUE, Number.MAX_VALUE, Number.MAX_VALUE);\n const max = new Vector3(-Number.MAX_VALUE, -Number.MAX_VALUE, -Number.MAX_VALUE);\n let found = 0;\n for (let i = 0; i < indices.length; ++i) {\n const vertexIndex = indices[i];\n for (let b = 0; b < 4; ++b) {\n const bIndex = boneIndices[vertexIndex * 4 + b];\n const bWeight = boneWeights[vertexIndex * 4 + b];\n if (bIndex === boneIndex && bWeight > 1e-5) {\n Vector3.FromArrayToRef(positions, vertexIndex * 3, TmpVectors.Vector3[0]);\n min.minimizeInPlace(TmpVectors.Vector3[0]);\n max.maximizeInPlace(TmpVectors.Vector3[0]);\n found++;\n break;\n }\n }\n }\n return found > 1\n ? {\n center: Vector3.Center(min, max),\n radius: Vector3.Distance(min, max) / 2,\n }\n : null;\n }\n /**\n * function to build and bind sphere joint points and spur bone representations.\n * @param spheresOnly\n */\n _buildSpheresAndSpurs(spheresOnly = true) {\n if (this._debugMesh) {\n this._debugMesh.dispose();\n this._debugMesh = null;\n this.ready = false;\n }\n this._ready = false;\n const utilityLayerScene = this.utilityLayer?.utilityLayerScene;\n const bones = this.skeleton.bones;\n const spheres = [];\n const spurs = [];\n const animationState = this.scene.animationsEnabled;\n try {\n if (this.options.pauseAnimations) {\n this.scene.animationsEnabled = false;\n utilityLayerScene.animationsEnabled = false;\n }\n if (this.options.returnToRest) {\n this.skeleton.returnToRest();\n }\n if (this.autoUpdateBonesMatrices) {\n this.skeleton.computeAbsoluteMatrices();\n }\n let longestBoneLength = Number.NEGATIVE_INFINITY;\n const displayOptions = this.options.displayOptions || {};\n for (let i = 0; i < bones.length; i++) {\n const bone = bones[i];\n if (bone._index === -1 || (!this._boneIndices.has(bone.getIndex()) && !this.options.useAllBones)) {\n continue;\n }\n const boneAbsoluteBindPoseTransform = new Matrix();\n this._getAbsoluteBindPoseToRef(bone, boneAbsoluteBindPoseTransform);\n const anchorPoint = new Vector3();\n boneAbsoluteBindPoseTransform.decompose(undefined, undefined, anchorPoint);\n if (bone.children.length > 0) {\n bone.children.forEach((bc) => {\n const childAbsoluteBindPoseTransform = new Matrix();\n bc.getLocalMatrix().multiplyToRef(boneAbsoluteBindPoseTransform, childAbsoluteBindPoseTransform);\n const childPoint = new Vector3();\n childAbsoluteBindPoseTransform.decompose(undefined, undefined, childPoint);\n const distanceFromParent = Vector3.Distance(anchorPoint, childPoint);\n if (distanceFromParent > longestBoneLength) {\n longestBoneLength = distanceFromParent;\n }\n if (spheresOnly) {\n return;\n }\n spurs.push(this._createSpur(anchorPoint, bone, childPoint, bc, displayOptions, utilityLayerScene));\n });\n }\n else {\n const boundingSphere = this._getBoundingSphereForBone(bone.getIndex());\n if (boundingSphere) {\n if (boundingSphere.radius > longestBoneLength) {\n longestBoneLength = boundingSphere.radius;\n }\n if (!spheresOnly) {\n let childPoint;\n const parentBone = bone.getParent();\n if (parentBone) {\n this._getAbsoluteBindPoseToRef(parentBone, boneAbsoluteBindPoseTransform);\n boneAbsoluteBindPoseTransform.decompose(undefined, undefined, TmpVectors.Vector3[0]);\n childPoint = anchorPoint.subtract(TmpVectors.Vector3[0]).normalize().scale(boundingSphere.radius).add(anchorPoint);\n }\n else {\n childPoint = boundingSphere.center.subtract(anchorPoint).normalize().scale(boundingSphere.radius).add(anchorPoint);\n }\n spurs.push(this._createSpur(anchorPoint, bone, childPoint, null, displayOptions, utilityLayerScene));\n }\n }\n }\n const sphereBaseSize = displayOptions.sphereBaseSize || 0.2;\n const sphere = CreateSphere(\"skeletonViewer\", {\n segments: 6,\n diameter: sphereBaseSize,\n updatable: true,\n }, utilityLayerScene);\n const numVertices = sphere.getTotalVertices();\n const mwk = [], mik = [];\n for (let i = 0; i < numVertices; i++) {\n mwk.push(1, 0, 0, 0);\n mik.push(bone.getIndex(), 0, 0, 0);\n }\n sphere.setVerticesData(VertexBuffer.MatricesWeightsKind, mwk, false);\n sphere.setVerticesData(VertexBuffer.MatricesIndicesKind, mik, false);\n sphere.position = anchorPoint.clone();\n spheres.push([sphere, bone]);\n }\n const sphereScaleUnit = displayOptions.sphereScaleUnit || 2;\n const sphereFactor = displayOptions.sphereFactor || 0.85;\n const meshes = [];\n for (let i = 0; i < spheres.length; i++) {\n const [sphere, bone] = spheres[i];\n const scale = 1 / (sphereScaleUnit / longestBoneLength);\n let _stepsOut = 0;\n let _b = bone;\n while (_b.getParent() && _b.getParent().getIndex() !== -1) {\n _stepsOut++;\n _b = _b.getParent();\n }\n sphere.scaling.scaleInPlace(scale * Math.pow(sphereFactor, _stepsOut));\n meshes.push(sphere);\n }\n this.debugMesh = Mesh.MergeMeshes(meshes.concat(spurs), true, true);\n if (this.debugMesh) {\n this.debugMesh.renderingGroupId = this.renderingGroupId;\n this.debugMesh.skeleton = this.skeleton;\n this.debugMesh.parent = this.mesh;\n this.debugMesh.computeBonesUsingShaders = this.options.computeBonesUsingShaders ?? true;\n this.debugMesh.alwaysSelectAsActiveMesh = true;\n }\n const light = this.utilityLayer._getSharedGizmoLight();\n light.intensity = 0.7;\n this._revert(animationState);\n this.ready = true;\n }\n catch (err) {\n Logger.Error(err);\n this._revert(animationState);\n this.dispose();\n }\n }\n _buildLocalAxes() {\n if (this._localAxes) {\n this._localAxes.dispose();\n }\n this._localAxes = null;\n const displayOptions = this.options.displayOptions || {};\n if (!displayOptions.showLocalAxes) {\n return;\n }\n const targetScene = this._utilityLayer.utilityLayerScene;\n const size = displayOptions.localAxesSize || 0.075;\n const lines = [];\n const colors = [];\n const red = new Color4(1, 0, 0, 1);\n const green = new Color4(0, 1, 0, 1);\n const blue = new Color4(0, 0, 1, 1);\n const mwk = [];\n const mik = [];\n const vertsPerBone = 6;\n for (const i in this.skeleton.bones) {\n const bone = this.skeleton.bones[i];\n if (bone._index === -1 || (!this._boneIndices.has(bone.getIndex()) && !this.options.useAllBones)) {\n continue;\n }\n const boneAbsoluteBindPoseTransform = new Matrix();\n const boneOrigin = new Vector3();\n this._getAbsoluteBindPoseToRef(bone, boneAbsoluteBindPoseTransform);\n boneAbsoluteBindPoseTransform.decompose(undefined, TmpVectors.Quaternion[0], boneOrigin);\n const m = new Matrix();\n TmpVectors.Quaternion[0].toRotationMatrix(m);\n const boneAxisX = Vector3.TransformCoordinates(new Vector3(0 + size, 0, 0), m);\n const boneAxisY = Vector3.TransformCoordinates(new Vector3(0, 0 + size, 0), m);\n const boneAxisZ = Vector3.TransformCoordinates(new Vector3(0, 0, 0 + size), m);\n const axisX = [boneOrigin, boneOrigin.add(boneAxisX)];\n const axisY = [boneOrigin, boneOrigin.add(boneAxisY)];\n const axisZ = [boneOrigin, boneOrigin.add(boneAxisZ)];\n const linePoints = [axisX, axisY, axisZ];\n const lineColors = [\n [red, red],\n [green, green],\n [blue, blue],\n ];\n lines.push(...linePoints);\n colors.push(...lineColors);\n for (let j = 0; j < vertsPerBone; j++) {\n mwk.push(1, 0, 0, 0);\n mik.push(bone.getIndex(), 0, 0, 0);\n }\n }\n this._localAxes = CreateLineSystem(\"localAxes\", { lines: lines, colors: colors, updatable: true }, targetScene);\n this._localAxes.setVerticesData(VertexBuffer.MatricesWeightsKind, mwk, false);\n this._localAxes.setVerticesData(VertexBuffer.MatricesIndicesKind, mik, false);\n this._localAxes.skeleton = this.skeleton;\n this._localAxes.renderingGroupId = this.renderingGroupId + 1;\n this._localAxes.parent = this.mesh;\n this._localAxes.computeBonesUsingShaders = this.options.computeBonesUsingShaders ?? true;\n }\n /** Update the viewer to sync with current skeleton state, only used for the line display. */\n _displayLinesUpdate() {\n if (!this._utilityLayer) {\n return;\n }\n if (this.autoUpdateBonesMatrices) {\n this.skeleton.computeAbsoluteMatrices();\n }\n if (this.skeleton.bones[0].length === undefined) {\n this._getLinesForBonesNoLength(this.skeleton.bones);\n }\n else {\n this._getLinesForBonesWithLength(this.skeleton.bones, this.mesh);\n }\n const targetScene = this._utilityLayer.utilityLayerScene;\n if (targetScene) {\n if (!this._debugMesh) {\n this._debugMesh = CreateLineSystem(\"\", { lines: this._debugLines, updatable: true, instance: null }, targetScene);\n this._debugMesh.renderingGroupId = this.renderingGroupId;\n }\n else {\n CreateLineSystem(\"\", { lines: this._debugLines, updatable: true, instance: this._debugMesh }, targetScene);\n }\n if (this.mesh) {\n this._debugMesh.position.copyFrom(this.mesh.position);\n }\n else {\n this._debugMesh.position.copyFrom(this.skeleton.bones[0].position);\n }\n this._debugMesh.color = this.color;\n }\n }\n /** Changes the displayMode of the skeleton viewer\n * @param mode The displayMode numerical value\n */\n changeDisplayMode(mode) {\n const wasEnabled = this.isEnabled ? true : false;\n if (this.displayMode !== mode) {\n this.isEnabled = false;\n if (this._debugMesh) {\n this._debugMesh.dispose();\n this._debugMesh = null;\n this.ready = false;\n }\n this.displayMode = mode;\n this.update();\n this._bindObs();\n this.isEnabled = wasEnabled;\n }\n }\n /** Sets a display option of the skeleton viewer\n *\n * | Option | Type | Default | Description |\n * | ---------------- | ------- | ------- | ----------- |\n * | midStep | float | 0.235 | A percentage between a bone and its child that determines the widest part of a spur. Only used when `displayMode` is set to `DISPLAY_SPHERE_AND_SPURS`. |\n * | midStepFactor | float | 0.15 | Mid step width expressed as a factor of the length. A value of 0.5 makes the spur width half of the spur length. Only used when `displayMode` is set to `DISPLAY_SPHERE_AND_SPURS`. |\n * | sphereBaseSize | float | 2 | Sphere base size. Only used when `displayMode` is set to `DISPLAY_SPHERE_AND_SPURS`. |\n * | sphereScaleUnit | float | 0.865 | Sphere scale factor used to scale spheres in relation to the longest bone. Only used when `displayMode` is set to `DISPLAY_SPHERE_AND_SPURS`. |\n * | spurFollowsChild | boolean | false | Whether a spur should attach its far end to the child bone. |\n * | showLocalAxes | boolean | false | Displays local axes on all bones. |\n * | localAxesSize | float | 0.075 | Determines the length of each local axis. |\n *\n * @param option String of the option name\n * @param value The numerical option value\n */\n changeDisplayOptions(option, value) {\n const wasEnabled = this.isEnabled ? true : false;\n this.options.displayOptions[option] = value;\n this.isEnabled = false;\n if (this._debugMesh) {\n this._debugMesh.dispose();\n this._debugMesh = null;\n this.ready = false;\n }\n this.update();\n this._bindObs();\n this.isEnabled = wasEnabled;\n }\n /** Release associated resources */\n dispose() {\n this.isEnabled = false;\n if (this._debugMesh) {\n this._debugMesh.dispose();\n this._debugMesh = null;\n }\n if (this._utilityLayer) {\n this._utilityLayer.dispose();\n this._utilityLayer = null;\n }\n this.ready = false;\n }\n}\n/** public Display constants BABYLON.SkeletonViewer.DISPLAY_LINES */\nSkeletonViewer.DISPLAY_LINES = 0;\n/** public Display constants BABYLON.SkeletonViewer.DISPLAY_SPHERES */\nSkeletonViewer.DISPLAY_SPHERES = 1;\n/** public Display constants BABYLON.SkeletonViewer.DISPLAY_SPHERE_AND_SPURS */\nSkeletonViewer.DISPLAY_SPHERE_AND_SPURS = 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