Initial project import

node_modules/three-stdlib/animation/AnimationClipCreator.cjs

@@ -0,0 +1,57 @@
+"use strict";
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const THREE = require("three");
+const AnimationClipCreator = {
+  CreateRotationAnimation(period, axis = "x") {
+    const times = [0, period], values = [0, 360];
+    const trackName = ".rotation[" + axis + "]";
+    const track = new THREE.NumberKeyframeTrack(trackName, times, values);
+    return new THREE.AnimationClip(null, period, [track]);
+  },
+  CreateScaleAxisAnimation(period, axis = "x") {
+    const times = [0, period], values = [0, 1];
+    const trackName = ".scale[" + axis + "]";
+    const track = new THREE.NumberKeyframeTrack(trackName, times, values);
+    return new THREE.AnimationClip(null, period, [track]);
+  },
+  CreateShakeAnimation(duration, shakeScale) {
+    const times = [], values = [], tmp = new THREE.Vector3();
+    for (let i = 0; i < duration * 10; i++) {
+      times.push(i / 10);
+      tmp.set(Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1).multiply(shakeScale).toArray(values, values.length);
+    }
+    const trackName = ".position";
+    const track = new THREE.VectorKeyframeTrack(trackName, times, values);
+    return new THREE.AnimationClip(null, duration, [track]);
+  },
+  CreatePulsationAnimation(duration, pulseScale) {
+    const times = [], values = [], tmp = new THREE.Vector3();
+    for (let i = 0; i < duration * 10; i++) {
+      times.push(i / 10);
+      const scaleFactor = Math.random() * pulseScale;
+      tmp.set(scaleFactor, scaleFactor, scaleFactor).toArray(values, values.length);
+    }
+    const trackName = ".scale";
+    const track = new THREE.VectorKeyframeTrack(trackName, times, values);
+    return new THREE.AnimationClip(null, duration, [track]);
+  },
+  CreateVisibilityAnimation(duration) {
+    const times = [0, duration / 2, duration], values = [true, false, true];
+    const trackName = ".visible";
+    const track = new THREE.BooleanKeyframeTrack(trackName, times, values);
+    return new THREE.AnimationClip(null, duration, [track]);
+  },
+  CreateMaterialColorAnimation(duration, colors) {
+    const times = [], values = [], timeStep = duration / colors.length;
+    for (let i = 0; i < colors.length; i++) {
+      times.push(i * timeStep);
+      const color = colors[i];
+      values.push(color.r, color.g, color.b);
+    }
+    const trackName = ".material.color";
+    const track = new THREE.ColorKeyframeTrack(trackName, times, values);
+    return new THREE.AnimationClip(null, duration, [track]);
+  }
+};
+exports.AnimationClipCreator = AnimationClipCreator;
+//# sourceMappingURL=AnimationClipCreator.cjs.map

node_modules/three-stdlib/animation/AnimationClipCreator.cjs.map

@@ -0,0 +1 @@
+{"version":3,"file":"AnimationClipCreator.cjs","sources":["../../src/animation/AnimationClipCreator.js"],"sourcesContent":["import {\n  AnimationClip,\n  BooleanKeyframeTrack,\n  ColorKeyframeTrack,\n  NumberKeyframeTrack,\n  Vector3,\n  VectorKeyframeTrack,\n} from 'three'\n\nconst AnimationClipCreator = {\n  CreateRotationAnimation(period, axis = 'x') {\n    const times = [0, period],\n      values = [0, 360]\n\n    const trackName = '.rotation[' + axis + ']'\n\n    const track = new NumberKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, period, [track])\n  },\n\n  CreateScaleAxisAnimation(period, axis = 'x') {\n    const times = [0, period],\n      values = [0, 1]\n\n    const trackName = '.scale[' + axis + ']'\n\n    const track = new NumberKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, period, [track])\n  },\n\n  CreateShakeAnimation(duration, shakeScale) {\n    const times = [],\n      values = [],\n      tmp = new Vector3()\n\n    for (let i = 0; i < duration * 10; i++) {\n      times.push(i / 10)\n\n      tmp\n        .set(Math.random() * 2.0 - 1.0, Math.random() * 2.0 - 1.0, Math.random() * 2.0 - 1.0)\n        .multiply(shakeScale)\n        .toArray(values, values.length)\n    }\n\n    const trackName = '.position'\n\n    const track = new VectorKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, duration, [track])\n  },\n\n  CreatePulsationAnimation(duration, pulseScale) {\n    const times = [],\n      values = [],\n      tmp = new Vector3()\n\n    for (let i = 0; i < duration * 10; i++) {\n      times.push(i / 10)\n\n      const scaleFactor = Math.random() * pulseScale\n      tmp.set(scaleFactor, scaleFactor, scaleFactor).toArray(values, values.length)\n    }\n\n    const trackName = '.scale'\n\n    const track = new VectorKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, duration, [track])\n  },\n\n  CreateVisibilityAnimation(duration) {\n    const times = [0, duration / 2, duration],\n      values = [true, false, true]\n\n    const trackName = '.visible'\n\n    const track = new BooleanKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, duration, [track])\n  },\n\n  CreateMaterialColorAnimation(duration, colors) {\n    const times = [],\n      values = [],\n      timeStep = duration / colors.length\n\n    for (let i = 0; i < colors.length; i++) {\n      times.push(i * timeStep)\n\n      const color = colors[i]\n      values.push(color.r, color.g, color.b)\n    }\n\n    const trackName = '.material.color'\n\n    const track = new ColorKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, duration, [track])\n  },\n}\n\nexport { AnimationClipCreator }\n"],"names":["NumberKeyframeTrack","AnimationClip","Vector3","VectorKeyframeTrack","BooleanKeyframeTrack","ColorKeyframeTrack"],"mappings":";;;AASK,MAAC,uBAAuB;AAAA,EAC3B,wBAAwB,QAAQ,OAAO,KAAK;AAC1C,UAAM,QAAQ,CAAC,GAAG,MAAM,GACtB,SAAS,CAAC,GAAG,GAAG;AAElB,UAAM,YAAY,eAAe,OAAO;AAExC,UAAM,QAAQ,IAAIA,MAAAA,oBAAoB,WAAW,OAAO,MAAM;AAE9D,WAAO,IAAIC,MAAAA,cAAc,MAAM,QAAQ,CAAC,KAAK,CAAC;AAAA,EAC/C;AAAA,EAED,yBAAyB,QAAQ,OAAO,KAAK;AAC3C,UAAM,QAAQ,CAAC,GAAG,MAAM,GACtB,SAAS,CAAC,GAAG,CAAC;AAEhB,UAAM,YAAY,YAAY,OAAO;AAErC,UAAM,QAAQ,IAAID,MAAAA,oBAAoB,WAAW,OAAO,MAAM;AAE9D,WAAO,IAAIC,MAAAA,cAAc,MAAM,QAAQ,CAAC,KAAK,CAAC;AAAA,EAC/C;AAAA,EAED,qBAAqB,UAAU,YAAY;AACzC,UAAM,QAAQ,CAAE,GACd,SAAS,CAAE,GACX,MAAM,IAAIC,MAAAA,QAAS;AAErB,aAAS,IAAI,GAAG,IAAI,WAAW,IAAI,KAAK;AACtC,YAAM,KAAK,IAAI,EAAE;AAEjB,UACG,IAAI,KAAK,OAAM,IAAK,IAAM,GAAK,KAAK,OAAQ,IAAG,IAAM,GAAK,KAAK,OAAM,IAAK,IAAM,CAAG,EACnF,SAAS,UAAU,EACnB,QAAQ,QAAQ,OAAO,MAAM;AAAA,IACjC;AAED,UAAM,YAAY;AAElB,UAAM,QAAQ,IAAIC,MAAAA,oBAAoB,WAAW,OAAO,MAAM;AAE9D,WAAO,IAAIF,MAAAA,cAAc,MAAM,UAAU,CAAC,KAAK,CAAC;AAAA,EACjD;AAAA,EAED,yBAAyB,UAAU,YAAY;AAC7C,UAAM,QAAQ,CAAE,GACd,SAAS,CAAE,GACX,MAAM,IAAIC,MAAAA,QAAS;AAErB,aAAS,IAAI,GAAG,IAAI,WAAW,IAAI,KAAK;AACtC,YAAM,KAAK,IAAI,EAAE;AAEjB,YAAM,cAAc,KAAK,OAAM,IAAK;AACpC,UAAI,IAAI,aAAa,aAAa,WAAW,EAAE,QAAQ,QAAQ,OAAO,MAAM;AAAA,IAC7E;AAED,UAAM,YAAY;AAElB,UAAM,QAAQ,IAAIC,MAAAA,oBAAoB,WAAW,OAAO,MAAM;AAE9D,WAAO,IAAIF,MAAAA,cAAc,MAAM,UAAU,CAAC,KAAK,CAAC;AAAA,EACjD;AAAA,EAED,0BAA0B,UAAU;AAClC,UAAM,QAAQ,CAAC,GAAG,WAAW,GAAG,QAAQ,GACtC,SAAS,CAAC,MAAM,OAAO,IAAI;AAE7B,UAAM,YAAY;AAElB,UAAM,QAAQ,IAAIG,MAAAA,qBAAqB,WAAW,OAAO,MAAM;AAE/D,WAAO,IAAIH,MAAAA,cAAc,MAAM,UAAU,CAAC,KAAK,CAAC;AAAA,EACjD;AAAA,EAED,6BAA6B,UAAU,QAAQ;AAC7C,UAAM,QAAQ,CAAE,GACd,SAAS,CAAE,GACX,WAAW,WAAW,OAAO;AAE/B,aAAS,IAAI,GAAG,IAAI,OAAO,QAAQ,KAAK;AACtC,YAAM,KAAK,IAAI,QAAQ;AAEvB,YAAM,QAAQ,OAAO,CAAC;AACtB,aAAO,KAAK,MAAM,GAAG,MAAM,GAAG,MAAM,CAAC;AAAA,IACtC;AAED,UAAM,YAAY;AAElB,UAAM,QAAQ,IAAII,MAAAA,mBAAmB,WAAW,OAAO,MAAM;AAE7D,WAAO,IAAIJ,MAAAA,cAAc,MAAM,UAAU,CAAC,KAAK,CAAC;AAAA,EACjD;AACH;;"}

node_modules/three-stdlib/animation/AnimationClipCreator.d.ts

@@ -0,0 +1,12 @@
+import { AnimationClip, Vector3 } from 'three'
+
+export interface AnimationClipCreator {
+  CreateRotationAnimation(period: number, axis: string): AnimationClip
+  CreateScaleAxisAnimation(period: number, axis: string): AnimationClip
+  CreateShakeAnimation(duration: number, shakeScale: Vector3): AnimationClip
+  CreatePulsationAnimation(duration: number, pulseScale: number): AnimationClip
+  CreateVisibilityAnimation(duration: number): AnimationClip
+  CreateMaterialColorAnimation(duration: number, colors: number[]): AnimationClip
+}
+
+export const AnimationClipCreator: AnimationClipCreator

node_modules/three-stdlib/animation/AnimationClipCreator.js

@@ -0,0 +1,57 @@
+import { NumberKeyframeTrack, AnimationClip, Vector3, VectorKeyframeTrack, BooleanKeyframeTrack, ColorKeyframeTrack } from "three";
+const AnimationClipCreator = {
+  CreateRotationAnimation(period, axis = "x") {
+    const times = [0, period], values = [0, 360];
+    const trackName = ".rotation[" + axis + "]";
+    const track = new NumberKeyframeTrack(trackName, times, values);
+    return new AnimationClip(null, period, [track]);
+  },
+  CreateScaleAxisAnimation(period, axis = "x") {
+    const times = [0, period], values = [0, 1];
+    const trackName = ".scale[" + axis + "]";
+    const track = new NumberKeyframeTrack(trackName, times, values);
+    return new AnimationClip(null, period, [track]);
+  },
+  CreateShakeAnimation(duration, shakeScale) {
+    const times = [], values = [], tmp = new Vector3();
+    for (let i = 0; i < duration * 10; i++) {
+      times.push(i / 10);
+      tmp.set(Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1).multiply(shakeScale).toArray(values, values.length);
+    }
+    const trackName = ".position";
+    const track = new VectorKeyframeTrack(trackName, times, values);
+    return new AnimationClip(null, duration, [track]);
+  },
+  CreatePulsationAnimation(duration, pulseScale) {
+    const times = [], values = [], tmp = new Vector3();
+    for (let i = 0; i < duration * 10; i++) {
+      times.push(i / 10);
+      const scaleFactor = Math.random() * pulseScale;
+      tmp.set(scaleFactor, scaleFactor, scaleFactor).toArray(values, values.length);
+    }
+    const trackName = ".scale";
+    const track = new VectorKeyframeTrack(trackName, times, values);
+    return new AnimationClip(null, duration, [track]);
+  },
+  CreateVisibilityAnimation(duration) {
+    const times = [0, duration / 2, duration], values = [true, false, true];
+    const trackName = ".visible";
+    const track = new BooleanKeyframeTrack(trackName, times, values);
+    return new AnimationClip(null, duration, [track]);
+  },
+  CreateMaterialColorAnimation(duration, colors) {
+    const times = [], values = [], timeStep = duration / colors.length;
+    for (let i = 0; i < colors.length; i++) {
+      times.push(i * timeStep);
+      const color = colors[i];
+      values.push(color.r, color.g, color.b);
+    }
+    const trackName = ".material.color";
+    const track = new ColorKeyframeTrack(trackName, times, values);
+    return new AnimationClip(null, duration, [track]);
+  }
+};
+export {
+  AnimationClipCreator
+};
+//# sourceMappingURL=AnimationClipCreator.js.map

node_modules/three-stdlib/animation/AnimationClipCreator.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"AnimationClipCreator.js","sources":["../../src/animation/AnimationClipCreator.js"],"sourcesContent":["import {\n  AnimationClip,\n  BooleanKeyframeTrack,\n  ColorKeyframeTrack,\n  NumberKeyframeTrack,\n  Vector3,\n  VectorKeyframeTrack,\n} from 'three'\n\nconst AnimationClipCreator = {\n  CreateRotationAnimation(period, axis = 'x') {\n    const times = [0, period],\n      values = [0, 360]\n\n    const trackName = '.rotation[' + axis + ']'\n\n    const track = new NumberKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, period, [track])\n  },\n\n  CreateScaleAxisAnimation(period, axis = 'x') {\n    const times = [0, period],\n      values = [0, 1]\n\n    const trackName = '.scale[' + axis + ']'\n\n    const track = new NumberKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, period, [track])\n  },\n\n  CreateShakeAnimation(duration, shakeScale) {\n    const times = [],\n      values = [],\n      tmp = new Vector3()\n\n    for (let i = 0; i < duration * 10; i++) {\n      times.push(i / 10)\n\n      tmp\n        .set(Math.random() * 2.0 - 1.0, Math.random() * 2.0 - 1.0, Math.random() * 2.0 - 1.0)\n        .multiply(shakeScale)\n        .toArray(values, values.length)\n    }\n\n    const trackName = '.position'\n\n    const track = new VectorKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, duration, [track])\n  },\n\n  CreatePulsationAnimation(duration, pulseScale) {\n    const times = [],\n      values = [],\n      tmp = new Vector3()\n\n    for (let i = 0; i < duration * 10; i++) {\n      times.push(i / 10)\n\n      const scaleFactor = Math.random() * pulseScale\n      tmp.set(scaleFactor, scaleFactor, scaleFactor).toArray(values, values.length)\n    }\n\n    const trackName = '.scale'\n\n    const track = new VectorKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, duration, [track])\n  },\n\n  CreateVisibilityAnimation(duration) {\n    const times = [0, duration / 2, duration],\n      values = [true, false, true]\n\n    const trackName = '.visible'\n\n    const track = new BooleanKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, duration, [track])\n  },\n\n  CreateMaterialColorAnimation(duration, colors) {\n    const times = [],\n      values = [],\n      timeStep = duration / colors.length\n\n    for (let i = 0; i < colors.length; i++) {\n      times.push(i * timeStep)\n\n      const color = colors[i]\n      values.push(color.r, color.g, color.b)\n    }\n\n    const trackName = '.material.color'\n\n    const track = new ColorKeyframeTrack(trackName, times, values)\n\n    return new AnimationClip(null, duration, [track])\n  },\n}\n\nexport { AnimationClipCreator }\n"],"names":[],"mappings":";AASK,MAAC,uBAAuB;AAAA,EAC3B,wBAAwB,QAAQ,OAAO,KAAK;AAC1C,UAAM,QAAQ,CAAC,GAAG,MAAM,GACtB,SAAS,CAAC,GAAG,GAAG;AAElB,UAAM,YAAY,eAAe,OAAO;AAExC,UAAM,QAAQ,IAAI,oBAAoB,WAAW,OAAO,MAAM;AAE9D,WAAO,IAAI,cAAc,MAAM,QAAQ,CAAC,KAAK,CAAC;AAAA,EAC/C;AAAA,EAED,yBAAyB,QAAQ,OAAO,KAAK;AAC3C,UAAM,QAAQ,CAAC,GAAG,MAAM,GACtB,SAAS,CAAC,GAAG,CAAC;AAEhB,UAAM,YAAY,YAAY,OAAO;AAErC,UAAM,QAAQ,IAAI,oBAAoB,WAAW,OAAO,MAAM;AAE9D,WAAO,IAAI,cAAc,MAAM,QAAQ,CAAC,KAAK,CAAC;AAAA,EAC/C;AAAA,EAED,qBAAqB,UAAU,YAAY;AACzC,UAAM,QAAQ,CAAE,GACd,SAAS,CAAE,GACX,MAAM,IAAI,QAAS;AAErB,aAAS,IAAI,GAAG,IAAI,WAAW,IAAI,KAAK;AACtC,YAAM,KAAK,IAAI,EAAE;AAEjB,UACG,IAAI,KAAK,OAAM,IAAK,IAAM,GAAK,KAAK,OAAQ,IAAG,IAAM,GAAK,KAAK,OAAM,IAAK,IAAM,CAAG,EACnF,SAAS,UAAU,EACnB,QAAQ,QAAQ,OAAO,MAAM;AAAA,IACjC;AAED,UAAM,YAAY;AAElB,UAAM,QAAQ,IAAI,oBAAoB,WAAW,OAAO,MAAM;AAE9D,WAAO,IAAI,cAAc,MAAM,UAAU,CAAC,KAAK,CAAC;AAAA,EACjD;AAAA,EAED,yBAAyB,UAAU,YAAY;AAC7C,UAAM,QAAQ,CAAE,GACd,SAAS,CAAE,GACX,MAAM,IAAI,QAAS;AAErB,aAAS,IAAI,GAAG,IAAI,WAAW,IAAI,KAAK;AACtC,YAAM,KAAK,IAAI,EAAE;AAEjB,YAAM,cAAc,KAAK,OAAM,IAAK;AACpC,UAAI,IAAI,aAAa,aAAa,WAAW,EAAE,QAAQ,QAAQ,OAAO,MAAM;AAAA,IAC7E;AAED,UAAM,YAAY;AAElB,UAAM,QAAQ,IAAI,oBAAoB,WAAW,OAAO,MAAM;AAE9D,WAAO,IAAI,cAAc,MAAM,UAAU,CAAC,KAAK,CAAC;AAAA,EACjD;AAAA,EAED,0BAA0B,UAAU;AAClC,UAAM,QAAQ,CAAC,GAAG,WAAW,GAAG,QAAQ,GACtC,SAAS,CAAC,MAAM,OAAO,IAAI;AAE7B,UAAM,YAAY;AAElB,UAAM,QAAQ,IAAI,qBAAqB,WAAW,OAAO,MAAM;AAE/D,WAAO,IAAI,cAAc,MAAM,UAAU,CAAC,KAAK,CAAC;AAAA,EACjD;AAAA,EAED,6BAA6B,UAAU,QAAQ;AAC7C,UAAM,QAAQ,CAAE,GACd,SAAS,CAAE,GACX,WAAW,WAAW,OAAO;AAE/B,aAAS,IAAI,GAAG,IAAI,OAAO,QAAQ,KAAK;AACtC,YAAM,KAAK,IAAI,QAAQ;AAEvB,YAAM,QAAQ,OAAO,CAAC;AACtB,aAAO,KAAK,MAAM,GAAG,MAAM,GAAG,MAAM,CAAC;AAAA,IACtC;AAED,UAAM,YAAY;AAElB,UAAM,QAAQ,IAAI,mBAAmB,WAAW,OAAO,MAAM;AAE7D,WAAO,IAAI,cAAc,MAAM,UAAU,CAAC,KAAK,CAAC;AAAA,EACjD;AACH;"}

node_modules/three-stdlib/animation/CCDIKSolver.cjs

@@ -0,0 +1,270 @@
+"use strict";
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const THREE = require("three");
+const _q = /* @__PURE__ */ new THREE.Quaternion();
+const _targetPos = /* @__PURE__ */ new THREE.Vector3();
+const _targetVec = /* @__PURE__ */ new THREE.Vector3();
+const _effectorPos = /* @__PURE__ */ new THREE.Vector3();
+const _effectorVec = /* @__PURE__ */ new THREE.Vector3();
+const _linkPos = /* @__PURE__ */ new THREE.Vector3();
+const _invLinkQ = /* @__PURE__ */ new THREE.Quaternion();
+const _linkScale = /* @__PURE__ */ new THREE.Vector3();
+const _axis = /* @__PURE__ */ new THREE.Vector3();
+const _vector = /* @__PURE__ */ new THREE.Vector3();
+const _matrix = /* @__PURE__ */ new THREE.Matrix4();
+class CCDIKSolver {
+  /**
+   * @param {THREE.SkinnedMesh} mesh
+   * @param {Array<Object>} iks
+   */
+  constructor(mesh, iks = []) {
+    this.mesh = mesh;
+    this.iks = iks;
+    this._valid();
+  }
+  /**
+   * Update all IK bones.
+   *
+   * @return {CCDIKSolver}
+   */
+  update() {
+    const iks = this.iks;
+    for (let i = 0, il = iks.length; i < il; i++) {
+      this.updateOne(iks[i]);
+    }
+    return this;
+  }
+  /**
+   * Update one IK bone
+   *
+   * @param {Object} ik parameter
+   * @return {CCDIKSolver}
+   */
+  updateOne(ik) {
+    const bones = this.mesh.skeleton.bones;
+    const math = Math;
+    const effector = bones[ik.effector];
+    const target = bones[ik.target];
+    _targetPos.setFromMatrixPosition(target.matrixWorld);
+    const links = ik.links;
+    const iteration = ik.iteration !== void 0 ? ik.iteration : 1;
+    for (let i = 0; i < iteration; i++) {
+      let rotated = false;
+      for (let j = 0, jl = links.length; j < jl; j++) {
+        const link = bones[links[j].index];
+        if (links[j].enabled === false)
+          break;
+        const limitation = links[j].limitation;
+        const rotationMin = links[j].rotationMin;
+        const rotationMax = links[j].rotationMax;
+        link.matrixWorld.decompose(_linkPos, _invLinkQ, _linkScale);
+        _invLinkQ.invert();
+        _effectorPos.setFromMatrixPosition(effector.matrixWorld);
+        _effectorVec.subVectors(_effectorPos, _linkPos);
+        _effectorVec.applyQuaternion(_invLinkQ);
+        _effectorVec.normalize();
+        _targetVec.subVectors(_targetPos, _linkPos);
+        _targetVec.applyQuaternion(_invLinkQ);
+        _targetVec.normalize();
+        let angle = _targetVec.dot(_effectorVec);
+        if (angle > 1) {
+          angle = 1;
+        } else if (angle < -1) {
+          angle = -1;
+        }
+        angle = math.acos(angle);
+        if (angle < 1e-5)
+          continue;
+        if (ik.minAngle !== void 0 && angle < ik.minAngle) {
+          angle = ik.minAngle;
+        }
+        if (ik.maxAngle !== void 0 && angle > ik.maxAngle) {
+          angle = ik.maxAngle;
+        }
+        _axis.crossVectors(_effectorVec, _targetVec);
+        _axis.normalize();
+        _q.setFromAxisAngle(_axis, angle);
+        link.quaternion.multiply(_q);
+        if (limitation !== void 0) {
+          let c = link.quaternion.w;
+          if (c > 1)
+            c = 1;
+          const c2 = math.sqrt(1 - c * c);
+          link.quaternion.set(limitation.x * c2, limitation.y * c2, limitation.z * c2, c);
+        }
+        if (rotationMin !== void 0) {
+          link.rotation.setFromVector3(_vector.setFromEuler(link.rotation).max(rotationMin));
+        }
+        if (rotationMax !== void 0) {
+          link.rotation.setFromVector3(_vector.setFromEuler(link.rotation).min(rotationMax));
+        }
+        link.updateMatrixWorld(true);
+        rotated = true;
+      }
+      if (!rotated)
+        break;
+    }
+    return this;
+  }
+  /**
+   * Creates Helper
+   *
+   * @return {CCDIKHelper}
+   */
+  createHelper() {
+    return new CCDIKHelper(this.mesh, this.iks);
+  }
+  // private methods
+  _valid() {
+    const iks = this.iks;
+    const bones = this.mesh.skeleton.bones;
+    for (let i = 0, il = iks.length; i < il; i++) {
+      const ik = iks[i];
+      const effector = bones[ik.effector];
+      const links = ik.links;
+      let link0, link1;
+      link0 = effector;
+      for (let j = 0, jl = links.length; j < jl; j++) {
+        link1 = bones[links[j].index];
+        if (link0.parent !== link1) {
+          console.warn("THREE.CCDIKSolver: bone " + link0.name + " is not the child of bone " + link1.name);
+        }
+        link0 = link1;
+      }
+    }
+  }
+}
+function getPosition(bone, matrixWorldInv) {
+  return _vector.setFromMatrixPosition(bone.matrixWorld).applyMatrix4(matrixWorldInv);
+}
+function setPositionOfBoneToAttributeArray(array, index, bone, matrixWorldInv) {
+  const v = getPosition(bone, matrixWorldInv);
+  array[index * 3 + 0] = v.x;
+  array[index * 3 + 1] = v.y;
+  array[index * 3 + 2] = v.z;
+}
+class CCDIKHelper extends THREE.Object3D {
+  constructor(mesh, iks = [], sphereSize = 0.25) {
+    super();
+    this.root = mesh;
+    this.iks = iks;
+    this.matrix.copy(mesh.matrixWorld);
+    this.matrixAutoUpdate = false;
+    this.sphereGeometry = new THREE.SphereGeometry(sphereSize, 16, 8);
+    this.targetSphereMaterial = new THREE.MeshBasicMaterial({
+      color: new THREE.Color(16746632),
+      depthTest: false,
+      depthWrite: false,
+      transparent: true
+    });
+    this.effectorSphereMaterial = new THREE.MeshBasicMaterial({
+      color: new THREE.Color(8978312),
+      depthTest: false,
+      depthWrite: false,
+      transparent: true
+    });
+    this.linkSphereMaterial = new THREE.MeshBasicMaterial({
+      color: new THREE.Color(8947967),
+      depthTest: false,
+      depthWrite: false,
+      transparent: true
+    });
+    this.lineMaterial = new THREE.LineBasicMaterial({
+      color: new THREE.Color(16711680),
+      depthTest: false,
+      depthWrite: false,
+      transparent: true
+    });
+    this._init();
+  }
+  /**
+   * Updates IK bones visualization.
+   */
+  updateMatrixWorld(force) {
+    const mesh = this.root;
+    if (this.visible) {
+      let offset = 0;
+      const iks = this.iks;
+      const bones = mesh.skeleton.bones;
+      _matrix.copy(mesh.matrixWorld).invert();
+      for (let i = 0, il = iks.length; i < il; i++) {
+        const ik = iks[i];
+        const targetBone = bones[ik.target];
+        const effectorBone = bones[ik.effector];
+        const targetMesh = this.children[offset++];
+        const effectorMesh = this.children[offset++];
+        targetMesh.position.copy(getPosition(targetBone, _matrix));
+        effectorMesh.position.copy(getPosition(effectorBone, _matrix));
+        for (let j = 0, jl = ik.links.length; j < jl; j++) {
+          const link = ik.links[j];
+          const linkBone = bones[link.index];
+          const linkMesh = this.children[offset++];
+          linkMesh.position.copy(getPosition(linkBone, _matrix));
+        }
+        const line = this.children[offset++];
+        const array = line.geometry.attributes.position.array;
+        setPositionOfBoneToAttributeArray(array, 0, targetBone, _matrix);
+        setPositionOfBoneToAttributeArray(array, 1, effectorBone, _matrix);
+        for (let j = 0, jl = ik.links.length; j < jl; j++) {
+          const link = ik.links[j];
+          const linkBone = bones[link.index];
+          setPositionOfBoneToAttributeArray(array, j + 2, linkBone, _matrix);
+        }
+        line.geometry.attributes.position.needsUpdate = true;
+      }
+    }
+    this.matrix.copy(mesh.matrixWorld);
+    super.updateMatrixWorld(force);
+  }
+  /**
+   * Frees the GPU-related resources allocated by this instance. Call this method whenever this instance is no longer used in your app.
+   */
+  dispose() {
+    this.sphereGeometry.dispose();
+    this.targetSphereMaterial.dispose();
+    this.effectorSphereMaterial.dispose();
+    this.linkSphereMaterial.dispose();
+    this.lineMaterial.dispose();
+    const children = this.children;
+    for (let i = 0; i < children.length; i++) {
+      const child = children[i];
+      if (child.isLine)
+        child.geometry.dispose();
+    }
+  }
+  // private method
+  _init() {
+    const scope = this;
+    const iks = this.iks;
+    function createLineGeometry(ik) {
+      const geometry = new THREE.BufferGeometry();
+      const vertices = new Float32Array((2 + ik.links.length) * 3);
+      geometry.setAttribute("position", new THREE.BufferAttribute(vertices, 3));
+      return geometry;
+    }
+    function createTargetMesh() {
+      return new THREE.Mesh(scope.sphereGeometry, scope.targetSphereMaterial);
+    }
+    function createEffectorMesh() {
+      return new THREE.Mesh(scope.sphereGeometry, scope.effectorSphereMaterial);
+    }
+    function createLinkMesh() {
+      return new THREE.Mesh(scope.sphereGeometry, scope.linkSphereMaterial);
+    }
+    function createLine(ik) {
+      return new THREE.Line(createLineGeometry(ik), scope.lineMaterial);
+    }
+    for (let i = 0, il = iks.length; i < il; i++) {
+      const ik = iks[i];
+      this.add(createTargetMesh());
+      this.add(createEffectorMesh());
+      for (let j = 0, jl = ik.links.length; j < jl; j++) {
+        this.add(createLinkMesh());
+      }
+      this.add(createLine(ik));
+    }
+  }
+}
+exports.CCDIKHelper = CCDIKHelper;
+exports.CCDIKSolver = CCDIKSolver;
+//# sourceMappingURL=CCDIKSolver.cjs.map

node_modules/three-stdlib/animation/CCDIKSolver.d.ts

@@ -0,0 +1,30 @@
+import { Object3D, SkinnedMesh, Vector3 } from 'three'
+
+// tslint:disable-next-line:interface-name
+export interface IKS {
+  effector: number
+  iteration: number
+  links: Array<{
+    enabled: boolean
+    index: number
+    limitation?: Vector3
+    rotationMin?: Vector3
+    rotationMax?: Vector3
+  }>
+  minAngle: number
+  maxAngle: number
+  target: number
+}
+
+export class CCDIKSolver {
+  constructor(mesh: SkinnedMesh, iks: IKS[])
+
+  update(): this
+  updateOne(iks: IKS): this
+  createHelper(): CCDIKHelper
+}
+
+export class CCDIKHelper extends Object3D {
+  constructor(mesh: SkinnedMesh, iks?: IKS[], sphereSize?: number)
+  dispose(): void
+}

node_modules/three-stdlib/animation/CCDIKSolver.js

@@ -0,0 +1,270 @@
+import { Object3D, SphereGeometry, MeshBasicMaterial, Color, LineBasicMaterial, Quaternion, Vector3, Matrix4, Mesh, Line, BufferGeometry, BufferAttribute } from "three";
+const _q = /* @__PURE__ */ new Quaternion();
+const _targetPos = /* @__PURE__ */ new Vector3();
+const _targetVec = /* @__PURE__ */ new Vector3();
+const _effectorPos = /* @__PURE__ */ new Vector3();
+const _effectorVec = /* @__PURE__ */ new Vector3();
+const _linkPos = /* @__PURE__ */ new Vector3();
+const _invLinkQ = /* @__PURE__ */ new Quaternion();
+const _linkScale = /* @__PURE__ */ new Vector3();
+const _axis = /* @__PURE__ */ new Vector3();
+const _vector = /* @__PURE__ */ new Vector3();
+const _matrix = /* @__PURE__ */ new Matrix4();
+class CCDIKSolver {
+  /**
+   * @param {THREE.SkinnedMesh} mesh
+   * @param {Array<Object>} iks
+   */
+  constructor(mesh, iks = []) {
+    this.mesh = mesh;
+    this.iks = iks;
+    this._valid();
+  }
+  /**
+   * Update all IK bones.
+   *
+   * @return {CCDIKSolver}
+   */
+  update() {
+    const iks = this.iks;
+    for (let i = 0, il = iks.length; i < il; i++) {
+      this.updateOne(iks[i]);
+    }
+    return this;
+  }
+  /**
+   * Update one IK bone
+   *
+   * @param {Object} ik parameter
+   * @return {CCDIKSolver}
+   */
+  updateOne(ik) {
+    const bones = this.mesh.skeleton.bones;
+    const math = Math;
+    const effector = bones[ik.effector];
+    const target = bones[ik.target];
+    _targetPos.setFromMatrixPosition(target.matrixWorld);
+    const links = ik.links;
+    const iteration = ik.iteration !== void 0 ? ik.iteration : 1;
+    for (let i = 0; i < iteration; i++) {
+      let rotated = false;
+      for (let j = 0, jl = links.length; j < jl; j++) {
+        const link = bones[links[j].index];
+        if (links[j].enabled === false)
+          break;
+        const limitation = links[j].limitation;
+        const rotationMin = links[j].rotationMin;
+        const rotationMax = links[j].rotationMax;
+        link.matrixWorld.decompose(_linkPos, _invLinkQ, _linkScale);
+        _invLinkQ.invert();
+        _effectorPos.setFromMatrixPosition(effector.matrixWorld);
+        _effectorVec.subVectors(_effectorPos, _linkPos);
+        _effectorVec.applyQuaternion(_invLinkQ);
+        _effectorVec.normalize();
+        _targetVec.subVectors(_targetPos, _linkPos);
+        _targetVec.applyQuaternion(_invLinkQ);
+        _targetVec.normalize();
+        let angle = _targetVec.dot(_effectorVec);
+        if (angle > 1) {
+          angle = 1;
+        } else if (angle < -1) {
+          angle = -1;
+        }
+        angle = math.acos(angle);
+        if (angle < 1e-5)
+          continue;
+        if (ik.minAngle !== void 0 && angle < ik.minAngle) {
+          angle = ik.minAngle;
+        }
+        if (ik.maxAngle !== void 0 && angle > ik.maxAngle) {
+          angle = ik.maxAngle;
+        }
+        _axis.crossVectors(_effectorVec, _targetVec);
+        _axis.normalize();
+        _q.setFromAxisAngle(_axis, angle);
+        link.quaternion.multiply(_q);
+        if (limitation !== void 0) {
+          let c = link.quaternion.w;
+          if (c > 1)
+            c = 1;
+          const c2 = math.sqrt(1 - c * c);
+          link.quaternion.set(limitation.x * c2, limitation.y * c2, limitation.z * c2, c);
+        }
+        if (rotationMin !== void 0) {
+          link.rotation.setFromVector3(_vector.setFromEuler(link.rotation).max(rotationMin));
+        }
+        if (rotationMax !== void 0) {
+          link.rotation.setFromVector3(_vector.setFromEuler(link.rotation).min(rotationMax));
+        }
+        link.updateMatrixWorld(true);
+        rotated = true;
+      }
+      if (!rotated)
+        break;
+    }
+    return this;
+  }
+  /**
+   * Creates Helper
+   *
+   * @return {CCDIKHelper}
+   */
+  createHelper() {
+    return new CCDIKHelper(this.mesh, this.iks);
+  }
+  // private methods
+  _valid() {
+    const iks = this.iks;
+    const bones = this.mesh.skeleton.bones;
+    for (let i = 0, il = iks.length; i < il; i++) {
+      const ik = iks[i];
+      const effector = bones[ik.effector];
+      const links = ik.links;
+      let link0, link1;
+      link0 = effector;
+      for (let j = 0, jl = links.length; j < jl; j++) {
+        link1 = bones[links[j].index];
+        if (link0.parent !== link1) {
+          console.warn("THREE.CCDIKSolver: bone " + link0.name + " is not the child of bone " + link1.name);
+        }
+        link0 = link1;
+      }
+    }
+  }
+}
+function getPosition(bone, matrixWorldInv) {
+  return _vector.setFromMatrixPosition(bone.matrixWorld).applyMatrix4(matrixWorldInv);
+}
+function setPositionOfBoneToAttributeArray(array, index, bone, matrixWorldInv) {
+  const v = getPosition(bone, matrixWorldInv);
+  array[index * 3 + 0] = v.x;
+  array[index * 3 + 1] = v.y;
+  array[index * 3 + 2] = v.z;
+}
+class CCDIKHelper extends Object3D {
+  constructor(mesh, iks = [], sphereSize = 0.25) {
+    super();
+    this.root = mesh;
+    this.iks = iks;
+    this.matrix.copy(mesh.matrixWorld);
+    this.matrixAutoUpdate = false;
+    this.sphereGeometry = new SphereGeometry(sphereSize, 16, 8);
+    this.targetSphereMaterial = new MeshBasicMaterial({
+      color: new Color(16746632),
+      depthTest: false,
+      depthWrite: false,
+      transparent: true
+    });
+    this.effectorSphereMaterial = new MeshBasicMaterial({
+      color: new Color(8978312),
+      depthTest: false,
+      depthWrite: false,
+      transparent: true
+    });
+    this.linkSphereMaterial = new MeshBasicMaterial({
+      color: new Color(8947967),
+      depthTest: false,
+      depthWrite: false,
+      transparent: true
+    });
+    this.lineMaterial = new LineBasicMaterial({
+      color: new Color(16711680),
+      depthTest: false,
+      depthWrite: false,
+      transparent: true
+    });
+    this._init();
+  }
+  /**
+   * Updates IK bones visualization.
+   */
+  updateMatrixWorld(force) {
+    const mesh = this.root;
+    if (this.visible) {
+      let offset = 0;
+      const iks = this.iks;
+      const bones = mesh.skeleton.bones;
+      _matrix.copy(mesh.matrixWorld).invert();
+      for (let i = 0, il = iks.length; i < il; i++) {
+        const ik = iks[i];
+        const targetBone = bones[ik.target];
+        const effectorBone = bones[ik.effector];
+        const targetMesh = this.children[offset++];
+        const effectorMesh = this.children[offset++];
+        targetMesh.position.copy(getPosition(targetBone, _matrix));
+        effectorMesh.position.copy(getPosition(effectorBone, _matrix));
+        for (let j = 0, jl = ik.links.length; j < jl; j++) {
+          const link = ik.links[j];
+          const linkBone = bones[link.index];
+          const linkMesh = this.children[offset++];
+          linkMesh.position.copy(getPosition(linkBone, _matrix));
+        }
+        const line = this.children[offset++];
+        const array = line.geometry.attributes.position.array;
+        setPositionOfBoneToAttributeArray(array, 0, targetBone, _matrix);
+        setPositionOfBoneToAttributeArray(array, 1, effectorBone, _matrix);
+        for (let j = 0, jl = ik.links.length; j < jl; j++) {
+          const link = ik.links[j];
+          const linkBone = bones[link.index];
+          setPositionOfBoneToAttributeArray(array, j + 2, linkBone, _matrix);
+        }
+        line.geometry.attributes.position.needsUpdate = true;
+      }
+    }
+    this.matrix.copy(mesh.matrixWorld);
+    super.updateMatrixWorld(force);
+  }
+  /**
+   * Frees the GPU-related resources allocated by this instance. Call this method whenever this instance is no longer used in your app.
+   */
+  dispose() {
+    this.sphereGeometry.dispose();
+    this.targetSphereMaterial.dispose();
+    this.effectorSphereMaterial.dispose();
+    this.linkSphereMaterial.dispose();
+    this.lineMaterial.dispose();
+    const children = this.children;
+    for (let i = 0; i < children.length; i++) {
+      const child = children[i];
+      if (child.isLine)
+        child.geometry.dispose();
+    }
+  }
+  // private method
+  _init() {
+    const scope = this;
+    const iks = this.iks;
+    function createLineGeometry(ik) {
+      const geometry = new BufferGeometry();
+      const vertices = new Float32Array((2 + ik.links.length) * 3);
+      geometry.setAttribute("position", new BufferAttribute(vertices, 3));
+      return geometry;
+    }
+    function createTargetMesh() {
+      return new Mesh(scope.sphereGeometry, scope.targetSphereMaterial);
+    }
+    function createEffectorMesh() {
+      return new Mesh(scope.sphereGeometry, scope.effectorSphereMaterial);
+    }
+    function createLinkMesh() {
+      return new Mesh(scope.sphereGeometry, scope.linkSphereMaterial);
+    }
+    function createLine(ik) {
+      return new Line(createLineGeometry(ik), scope.lineMaterial);
+    }
+    for (let i = 0, il = iks.length; i < il; i++) {
+      const ik = iks[i];
+      this.add(createTargetMesh());
+      this.add(createEffectorMesh());
+      for (let j = 0, jl = ik.links.length; j < jl; j++) {
+        this.add(createLinkMesh());
+      }
+      this.add(createLine(ik));
+    }
+  }
+}
+export {
+  CCDIKHelper,
+  CCDIKSolver
+};
+//# sourceMappingURL=CCDIKSolver.js.map

node_modules/three-stdlib/animation/MMDAnimationHelper.cjs

@@ -0,0 +1,689 @@
+"use strict";
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const THREE = require("three");
+const CCDIKSolver = require("./CCDIKSolver.cjs");
+const MMDPhysics = require("./MMDPhysics.cjs");
+class MMDAnimationHelper {
+  /**
+   * @param {Object} params - (optional)
+   * @param {boolean} params.sync - Whether animation durations of added objects are synched. Default is true.
+   * @param {Number} params.afterglow - Default is 0.0.
+   * @param {boolean} params.resetPhysicsOnLoop - Default is true.
+   */
+  constructor(params = {}) {
+    this.meshes = [];
+    this.camera = null;
+    this.cameraTarget = new THREE.Object3D();
+    this.cameraTarget.name = "target";
+    this.audio = null;
+    this.audioManager = null;
+    this.objects = /* @__PURE__ */ new WeakMap();
+    this.configuration = {
+      sync: params.sync !== void 0 ? params.sync : true,
+      afterglow: params.afterglow !== void 0 ? params.afterglow : 0,
+      resetPhysicsOnLoop: params.resetPhysicsOnLoop !== void 0 ? params.resetPhysicsOnLoop : true,
+      pmxAnimation: params.pmxAnimation !== void 0 ? params.pmxAnimation : false
+    };
+    this.enabled = {
+      animation: true,
+      ik: true,
+      grant: true,
+      physics: true,
+      cameraAnimation: true
+    };
+    this.onBeforePhysics = function() {
+    };
+    this.sharedPhysics = false;
+    this.masterPhysics = null;
+  }
+  /**
+   * Adds an Three.js Object to helper and setups animation.
+   * The anmation durations of added objects are synched
+   * if this.configuration.sync is true.
+   *
+   * @param {THREE.SkinnedMesh|THREE.Camera|THREE.Audio} object
+   * @param {Object} params - (optional)
+   * @param {THREE.AnimationClip|Array<THREE.AnimationClip>} params.animation - Only for THREE.SkinnedMesh and THREE.Camera. Default is undefined.
+   * @param {boolean} params.physics - Only for THREE.SkinnedMesh. Default is true.
+   * @param {Integer} params.warmup - Only for THREE.SkinnedMesh and physics is true. Default is 60.
+   * @param {Number} params.unitStep - Only for THREE.SkinnedMesh and physics is true. Default is 1 / 65.
+   * @param {Integer} params.maxStepNum - Only for THREE.SkinnedMesh and physics is true. Default is 3.
+   * @param {Vector3} params.gravity - Only for THREE.SkinnedMesh and physics is true. Default ( 0, - 9.8 * 10, 0 ).
+   * @param {Number} params.delayTime - Only for THREE.Audio. Default is 0.0.
+   * @return {MMDAnimationHelper}
+   */
+  add(object, params = {}) {
+    if (object.isSkinnedMesh) {
+      this._addMesh(object, params);
+    } else if (object.isCamera) {
+      this._setupCamera(object, params);
+    } else if (object.type === "Audio") {
+      this._setupAudio(object, params);
+    } else {
+      throw new Error(
+        "THREE.MMDAnimationHelper.add: accepts only THREE.SkinnedMesh or THREE.Camera or THREE.Audio instance."
+      );
+    }
+    if (this.configuration.sync)
+      this._syncDuration();
+    return this;
+  }
+  /**
+   * Removes an Three.js Object from helper.
+   *
+   * @param {THREE.SkinnedMesh|THREE.Camera|THREE.Audio} object
+   * @return {MMDAnimationHelper}
+   */
+  remove(object) {
+    if (object.isSkinnedMesh) {
+      this._removeMesh(object);
+    } else if (object.isCamera) {
+      this._clearCamera(object);
+    } else if (object.type === "Audio") {
+      this._clearAudio(object);
+    } else {
+      throw new Error(
+        "THREE.MMDAnimationHelper.remove: accepts only THREE.SkinnedMesh or THREE.Camera or THREE.Audio instance."
+      );
+    }
+    if (this.configuration.sync)
+      this._syncDuration();
+    return this;
+  }
+  /**
+   * Updates the animation.
+   *
+   * @param {Number} delta
+   * @return {MMDAnimationHelper}
+   */
+  update(delta) {
+    if (this.audioManager !== null)
+      this.audioManager.control(delta);
+    for (let i = 0; i < this.meshes.length; i++) {
+      this._animateMesh(this.meshes[i], delta);
+    }
+    if (this.sharedPhysics)
+      this._updateSharedPhysics(delta);
+    if (this.camera !== null)
+      this._animateCamera(this.camera, delta);
+    return this;
+  }
+  /**
+   * Changes the pose of SkinnedMesh as VPD specifies.
+   *
+   * @param {THREE.SkinnedMesh} mesh
+   * @param {Object} vpd - VPD content parsed MMDParser
+   * @param {Object} params - (optional)
+   * @param {boolean} params.resetPose - Default is true.
+   * @param {boolean} params.ik - Default is true.
+   * @param {boolean} params.grant - Default is true.
+   * @return {MMDAnimationHelper}
+   */
+  pose(mesh, vpd, params = {}) {
+    if (params.resetPose !== false)
+      mesh.pose();
+    const bones = mesh.skeleton.bones;
+    const boneParams = vpd.bones;
+    const boneNameDictionary = {};
+    for (let i = 0, il = bones.length; i < il; i++) {
+      boneNameDictionary[bones[i].name] = i;
+    }
+    const vector = new THREE.Vector3();
+    const quaternion = new THREE.Quaternion();
+    for (let i = 0, il = boneParams.length; i < il; i++) {
+      const boneParam = boneParams[i];
+      const boneIndex = boneNameDictionary[boneParam.name];
+      if (boneIndex === void 0)
+        continue;
+      const bone = bones[boneIndex];
+      bone.position.add(vector.fromArray(boneParam.translation));
+      bone.quaternion.multiply(quaternion.fromArray(boneParam.quaternion));
+    }
+    mesh.updateMatrixWorld(true);
+    if (this.configuration.pmxAnimation && mesh.geometry.userData.MMD && mesh.geometry.userData.MMD.format === "pmx") {
+      const sortedBonesData = this._sortBoneDataArray(mesh.geometry.userData.MMD.bones.slice());
+      const ikSolver = params.ik !== false ? this._createCCDIKSolver(mesh) : null;
+      const grantSolver = params.grant !== false ? this.createGrantSolver(mesh) : null;
+      this._animatePMXMesh(mesh, sortedBonesData, ikSolver, grantSolver);
+    } else {
+      if (params.ik !== false) {
+        this._createCCDIKSolver(mesh).update();
+      }
+      if (params.grant !== false) {
+        this.createGrantSolver(mesh).update();
+      }
+    }
+    return this;
+  }
+  /**
+   * Enabes/Disables an animation feature.
+   *
+   * @param {string} key
+   * @param {boolean} enabled
+   * @return {MMDAnimationHelper}
+   */
+  enable(key, enabled) {
+    if (this.enabled[key] === void 0) {
+      throw new Error("THREE.MMDAnimationHelper.enable: unknown key " + key);
+    }
+    this.enabled[key] = enabled;
+    if (key === "physics") {
+      for (let i = 0, il = this.meshes.length; i < il; i++) {
+        this._optimizeIK(this.meshes[i], enabled);
+      }
+    }
+    return this;
+  }
+  /**
+   * Creates an GrantSolver instance.
+   *
+   * @param {THREE.SkinnedMesh} mesh
+   * @return {GrantSolver}
+   */
+  createGrantSolver(mesh) {
+    return new GrantSolver(mesh, mesh.geometry.userData.MMD.grants);
+  }
+  // private methods
+  _addMesh(mesh, params) {
+    if (this.meshes.indexOf(mesh) >= 0) {
+      throw new Error("THREE.MMDAnimationHelper._addMesh: SkinnedMesh '" + mesh.name + "' has already been added.");
+    }
+    this.meshes.push(mesh);
+    this.objects.set(mesh, { looped: false });
+    this._setupMeshAnimation(mesh, params.animation);
+    if (params.physics !== false) {
+      this._setupMeshPhysics(mesh, params);
+    }
+    return this;
+  }
+  _setupCamera(camera, params) {
+    if (this.camera === camera) {
+      throw new Error("THREE.MMDAnimationHelper._setupCamera: Camera '" + camera.name + "' has already been set.");
+    }
+    if (this.camera)
+      this.clearCamera(this.camera);
+    this.camera = camera;
+    camera.add(this.cameraTarget);
+    this.objects.set(camera, {});
+    if (params.animation !== void 0) {
+      this._setupCameraAnimation(camera, params.animation);
+    }
+    return this;
+  }
+  _setupAudio(audio, params) {
+    if (this.audio === audio) {
+      throw new Error("THREE.MMDAnimationHelper._setupAudio: Audio '" + audio.name + "' has already been set.");
+    }
+    if (this.audio)
+      this.clearAudio(this.audio);
+    this.audio = audio;
+    this.audioManager = new AudioManager(audio, params);
+    this.objects.set(this.audioManager, {
+      duration: this.audioManager.duration
+    });
+    return this;
+  }
+  _removeMesh(mesh) {
+    let found = false;
+    let writeIndex = 0;
+    for (let i = 0, il = this.meshes.length; i < il; i++) {
+      if (this.meshes[i] === mesh) {
+        this.objects.delete(mesh);
+        found = true;
+        continue;
+      }
+      this.meshes[writeIndex++] = this.meshes[i];
+    }
+    if (!found) {
+      throw new Error(
+        "THREE.MMDAnimationHelper._removeMesh: SkinnedMesh '" + mesh.name + "' has not been added yet."
+      );
+    }
+    this.meshes.length = writeIndex;
+    return this;
+  }
+  _clearCamera(camera) {
+    if (camera !== this.camera) {
+      throw new Error("THREE.MMDAnimationHelper._clearCamera: Camera '" + camera.name + "' has not been set yet.");
+    }
+    this.camera.remove(this.cameraTarget);
+    this.objects.delete(this.camera);
+    this.camera = null;
+    return this;
+  }
+  _clearAudio(audio) {
+    if (audio !== this.audio) {
+      throw new Error("THREE.MMDAnimationHelper._clearAudio: Audio '" + audio.name + "' has not been set yet.");
+    }
+    this.objects.delete(this.audioManager);
+    this.audio = null;
+    this.audioManager = null;
+    return this;
+  }
+  _setupMeshAnimation(mesh, animation) {
+    const objects = this.objects.get(mesh);
+    if (animation !== void 0) {
+      const animations = Array.isArray(animation) ? animation : [animation];
+      objects.mixer = new THREE.AnimationMixer(mesh);
+      for (let i = 0, il = animations.length; i < il; i++) {
+        objects.mixer.clipAction(animations[i]).play();
+      }
+      objects.mixer.addEventListener("loop", function(event) {
+        const tracks = event.action._clip.tracks;
+        if (tracks.length > 0 && tracks[0].name.slice(0, 6) !== ".bones")
+          return;
+        objects.looped = true;
+      });
+    }
+    objects.ikSolver = this._createCCDIKSolver(mesh);
+    objects.grantSolver = this.createGrantSolver(mesh);
+    return this;
+  }
+  _setupCameraAnimation(camera, animation) {
+    const animations = Array.isArray(animation) ? animation : [animation];
+    const objects = this.objects.get(camera);
+    objects.mixer = new THREE.AnimationMixer(camera);
+    for (let i = 0, il = animations.length; i < il; i++) {
+      objects.mixer.clipAction(animations[i]).play();
+    }
+  }
+  _setupMeshPhysics(mesh, params) {
+    const objects = this.objects.get(mesh);
+    if (params.world === void 0 && this.sharedPhysics) {
+      const masterPhysics = this._getMasterPhysics();
+      if (masterPhysics !== null)
+        world = masterPhysics.world;
+    }
+    objects.physics = this._createMMDPhysics(mesh, params);
+    if (objects.mixer && params.animationWarmup !== false) {
+      this._animateMesh(mesh, 0);
+      objects.physics.reset();
+    }
+    objects.physics.warmup(params.warmup !== void 0 ? params.warmup : 60);
+    this._optimizeIK(mesh, true);
+  }
+  _animateMesh(mesh, delta) {
+    const objects = this.objects.get(mesh);
+    const mixer = objects.mixer;
+    const ikSolver = objects.ikSolver;
+    const grantSolver = objects.grantSolver;
+    const physics = objects.physics;
+    const looped = objects.looped;
+    if (mixer && this.enabled.animation) {
+      this._restoreBones(mesh);
+      mixer.update(delta);
+      this._saveBones(mesh);
+      if (this.configuration.pmxAnimation && mesh.geometry.userData.MMD && mesh.geometry.userData.MMD.format === "pmx") {
+        if (!objects.sortedBonesData)
+          objects.sortedBonesData = this._sortBoneDataArray(mesh.geometry.userData.MMD.bones.slice());
+        this._animatePMXMesh(
+          mesh,
+          objects.sortedBonesData,
+          ikSolver && this.enabled.ik ? ikSolver : null,
+          grantSolver && this.enabled.grant ? grantSolver : null
+        );
+      } else {
+        if (ikSolver && this.enabled.ik) {
+          mesh.updateMatrixWorld(true);
+          ikSolver.update();
+        }
+        if (grantSolver && this.enabled.grant) {
+          grantSolver.update();
+        }
+      }
+    }
+    if (looped === true && this.enabled.physics) {
+      if (physics && this.configuration.resetPhysicsOnLoop)
+        physics.reset();
+      objects.looped = false;
+    }
+    if (physics && this.enabled.physics && !this.sharedPhysics) {
+      this.onBeforePhysics(mesh);
+      physics.update(delta);
+    }
+  }
+  // Sort bones in order by 1. transformationClass and 2. bone index.
+  // In PMX animation system, bone transformations should be processed
+  // in this order.
+  _sortBoneDataArray(boneDataArray) {
+    return boneDataArray.sort(function(a, b) {
+      if (a.transformationClass !== b.transformationClass) {
+        return a.transformationClass - b.transformationClass;
+      } else {
+        return a.index - b.index;
+      }
+    });
+  }
+  // PMX Animation system is a bit too complex and doesn't great match to
+  // Three.js Animation system. This method attempts to simulate it as much as
+  // possible but doesn't perfectly simulate.
+  // This method is more costly than the regular one so
+  // you are recommended to set constructor parameter "pmxAnimation: true"
+  // only if your PMX model animation doesn't work well.
+  // If you need better method you would be required to write your own.
+  _animatePMXMesh(mesh, sortedBonesData, ikSolver, grantSolver) {
+    _quaternionIndex = 0;
+    _grantResultMap.clear();
+    for (let i = 0, il = sortedBonesData.length; i < il; i++) {
+      updateOne(mesh, sortedBonesData[i].index, ikSolver, grantSolver);
+    }
+    mesh.updateMatrixWorld(true);
+    return this;
+  }
+  _animateCamera(camera, delta) {
+    const mixer = this.objects.get(camera).mixer;
+    if (mixer && this.enabled.cameraAnimation) {
+      mixer.update(delta);
+      camera.updateProjectionMatrix();
+      camera.up.set(0, 1, 0);
+      camera.up.applyQuaternion(camera.quaternion);
+      camera.lookAt(this.cameraTarget.position);
+    }
+  }
+  _optimizeIK(mesh, physicsEnabled) {
+    const iks = mesh.geometry.userData.MMD.iks;
+    const bones = mesh.geometry.userData.MMD.bones;
+    for (let i = 0, il = iks.length; i < il; i++) {
+      const ik = iks[i];
+      const links = ik.links;
+      for (let j = 0, jl = links.length; j < jl; j++) {
+        const link = links[j];
+        if (physicsEnabled === true) {
+          link.enabled = bones[link.index].rigidBodyType > 0 ? false : true;
+        } else {
+          link.enabled = true;
+        }
+      }
+    }
+  }
+  _createCCDIKSolver(mesh) {
+    if (CCDIKSolver.CCDIKSolver === void 0) {
+      throw new Error("THREE.MMDAnimationHelper: Import CCDIKSolver.");
+    }
+    return new CCDIKSolver.CCDIKSolver(mesh, mesh.geometry.userData.MMD.iks);
+  }
+  _createMMDPhysics(mesh, params) {
+    if (MMDPhysics.MMDPhysics === void 0) {
+      throw new Error("THREE.MMDPhysics: Import MMDPhysics.");
+    }
+    return new MMDPhysics.MMDPhysics(mesh, mesh.geometry.userData.MMD.rigidBodies, mesh.geometry.userData.MMD.constraints, params);
+  }
+  /*
+   * Detects the longest duration and then sets it to them to sync.
+   * TODO: Not to access private properties ( ._actions and ._clip )
+   */
+  _syncDuration() {
+    let max = 0;
+    const objects = this.objects;
+    const meshes = this.meshes;
+    const camera = this.camera;
+    const audioManager = this.audioManager;
+    for (let i = 0, il = meshes.length; i < il; i++) {
+      const mixer = this.objects.get(meshes[i]).mixer;
+      if (mixer === void 0)
+        continue;
+      for (let j = 0; j < mixer._actions.length; j++) {
+        const clip = mixer._actions[j]._clip;
+        if (!objects.has(clip)) {
+          objects.set(clip, {
+            duration: clip.duration
+          });
+        }
+        max = Math.max(max, objects.get(clip).duration);
+      }
+    }
+    if (camera !== null) {
+      const mixer = this.objects.get(camera).mixer;
+      if (mixer !== void 0) {
+        for (let i = 0, il = mixer._actions.length; i < il; i++) {
+          const clip = mixer._actions[i]._clip;
+          if (!objects.has(clip)) {
+            objects.set(clip, {
+              duration: clip.duration
+            });
+          }
+          max = Math.max(max, objects.get(clip).duration);
+        }
+      }
+    }
+    if (audioManager !== null) {
+      max = Math.max(max, objects.get(audioManager).duration);
+    }
+    max += this.configuration.afterglow;
+    for (let i = 0, il = this.meshes.length; i < il; i++) {
+      const mixer = this.objects.get(this.meshes[i]).mixer;
+      if (mixer === void 0)
+        continue;
+      for (let j = 0, jl = mixer._actions.length; j < jl; j++) {
+        mixer._actions[j]._clip.duration = max;
+      }
+    }
+    if (camera !== null) {
+      const mixer = this.objects.get(camera).mixer;
+      if (mixer !== void 0) {
+        for (let i = 0, il = mixer._actions.length; i < il; i++) {
+          mixer._actions[i]._clip.duration = max;
+        }
+      }
+    }
+    if (audioManager !== null) {
+      audioManager.duration = max;
+    }
+  }
+  // workaround
+  _updatePropertyMixersBuffer(mesh) {
+    const mixer = this.objects.get(mesh).mixer;
+    const propertyMixers = mixer._bindings;
+    const accuIndex = mixer._accuIndex;
+    for (let i = 0, il = propertyMixers.length; i < il; i++) {
+      const propertyMixer = propertyMixers[i];
+      const buffer = propertyMixer.buffer;
+      const stride = propertyMixer.valueSize;
+      const offset = (accuIndex + 1) * stride;
+      propertyMixer.binding.getValue(buffer, offset);
+    }
+  }
+  /*
+   * Avoiding these two issues by restore/save bones before/after mixer animation.
+   *
+   * 1. PropertyMixer used by AnimationMixer holds cache value in .buffer.
+   *    Calculating IK, Grant, and Physics after mixer animation can break
+   *    the cache coherency.
+   *
+   * 2. Applying Grant two or more times without reset the posing breaks model.
+   */
+  _saveBones(mesh) {
+    const objects = this.objects.get(mesh);
+    const bones = mesh.skeleton.bones;
+    let backupBones = objects.backupBones;
+    if (backupBones === void 0) {
+      backupBones = new Float32Array(bones.length * 7);
+      objects.backupBones = backupBones;
+    }
+    for (let i = 0, il = bones.length; i < il; i++) {
+      const bone = bones[i];
+      bone.position.toArray(backupBones, i * 7);
+      bone.quaternion.toArray(backupBones, i * 7 + 3);
+    }
+  }
+  _restoreBones(mesh) {
+    const objects = this.objects.get(mesh);
+    const backupBones = objects.backupBones;
+    if (backupBones === void 0)
+      return;
+    const bones = mesh.skeleton.bones;
+    for (let i = 0, il = bones.length; i < il; i++) {
+      const bone = bones[i];
+      bone.position.fromArray(backupBones, i * 7);
+      bone.quaternion.fromArray(backupBones, i * 7 + 3);
+    }
+  }
+  // experimental
+  _getMasterPhysics() {
+    if (this.masterPhysics !== null)
+      return this.masterPhysics;
+    for (let i = 0, il = this.meshes.length; i < il; i++) {
+      const physics = this.meshes[i].physics;
+      if (physics !== void 0 && physics !== null) {
+        this.masterPhysics = physics;
+        return this.masterPhysics;
+      }
+    }
+    return null;
+  }
+  _updateSharedPhysics(delta) {
+    if (this.meshes.length === 0 || !this.enabled.physics || !this.sharedPhysics)
+      return;
+    const physics = this._getMasterPhysics();
+    if (physics === null)
+      return;
+    for (let i = 0, il = this.meshes.length; i < il; i++) {
+      const p = this.meshes[i].physics;
+      if (p !== null && p !== void 0) {
+        p.updateRigidBodies();
+      }
+    }
+    physics.stepSimulation(delta);
+    for (let i = 0, il = this.meshes.length; i < il; i++) {
+      const p = this.meshes[i].physics;
+      if (p !== null && p !== void 0) {
+        p.updateBones();
+      }
+    }
+  }
+}
+const _quaternions = [];
+let _quaternionIndex = 0;
+function getQuaternion() {
+  if (_quaternionIndex >= _quaternions.length) {
+    _quaternions.push(new THREE.Quaternion());
+  }
+  return _quaternions[_quaternionIndex++];
+}
+const _grantResultMap = /* @__PURE__ */ new Map();
+function updateOne(mesh, boneIndex, ikSolver, grantSolver) {
+  const bones = mesh.skeleton.bones;
+  const bonesData = mesh.geometry.userData.MMD.bones;
+  const boneData = bonesData[boneIndex];
+  const bone = bones[boneIndex];
+  if (_grantResultMap.has(boneIndex))
+    return;
+  const quaternion = getQuaternion();
+  _grantResultMap.set(boneIndex, quaternion.copy(bone.quaternion));
+  if (grantSolver && boneData.grant && !boneData.grant.isLocal && boneData.grant.affectRotation) {
+    const parentIndex = boneData.grant.parentIndex;
+    const ratio = boneData.grant.ratio;
+    if (!_grantResultMap.has(parentIndex)) {
+      updateOne(mesh, parentIndex, ikSolver, grantSolver);
+    }
+    grantSolver.addGrantRotation(bone, _grantResultMap.get(parentIndex), ratio);
+  }
+  if (ikSolver && boneData.ik) {
+    mesh.updateMatrixWorld(true);
+    ikSolver.updateOne(boneData.ik);
+    const links = boneData.ik.links;
+    for (let i = 0, il = links.length; i < il; i++) {
+      const link = links[i];
+      if (link.enabled === false)
+        continue;
+      const linkIndex = link.index;
+      if (_grantResultMap.has(linkIndex)) {
+        _grantResultMap.set(linkIndex, _grantResultMap.get(linkIndex).copy(bones[linkIndex].quaternion));
+      }
+    }
+  }
+  quaternion.copy(bone.quaternion);
+}
+class AudioManager {
+  /**
+   * @param {THREE.Audio} audio
+   * @param {Object} params - (optional)
+   * @param {Nuumber} params.delayTime
+   */
+  constructor(audio, params = {}) {
+    this.audio = audio;
+    this.elapsedTime = 0;
+    this.currentTime = 0;
+    this.delayTime = params.delayTime !== void 0 ? params.delayTime : 0;
+    this.audioDuration = this.audio.buffer.duration;
+    this.duration = this.audioDuration + this.delayTime;
+  }
+  /**
+   * @param {Number} delta
+   * @return {AudioManager}
+   */
+  control(delta) {
+    this.elapsed += delta;
+    this.currentTime += delta;
+    if (this._shouldStopAudio())
+      this.audio.stop();
+    if (this._shouldStartAudio())
+      this.audio.play();
+    return this;
+  }
+  // private methods
+  _shouldStartAudio() {
+    if (this.audio.isPlaying)
+      return false;
+    while (this.currentTime >= this.duration) {
+      this.currentTime -= this.duration;
+    }
+    if (this.currentTime < this.delayTime)
+      return false;
+    if (this.currentTime - this.delayTime > this.audioDuration)
+      return false;
+    return true;
+  }
+  _shouldStopAudio() {
+    return this.audio.isPlaying && this.currentTime >= this.duration;
+  }
+}
+const _q = /* @__PURE__ */ new THREE.Quaternion();
+class GrantSolver {
+  constructor(mesh, grants = []) {
+    this.mesh = mesh;
+    this.grants = grants;
+  }
+  /**
+   * Solve all the grant bones
+   * @return {GrantSolver}
+   */
+  update() {
+    const grants = this.grants;
+    for (let i = 0, il = grants.length; i < il; i++) {
+      this.updateOne(grants[i]);
+    }
+    return this;
+  }
+  /**
+   * Solve a grant bone
+   * @param {Object} grant - grant parameter
+   * @return {GrantSolver}
+   */
+  updateOne(grant) {
+    const bones = this.mesh.skeleton.bones;
+    const bone = bones[grant.index];
+    const parentBone = bones[grant.parentIndex];
+    if (grant.isLocal) {
+      if (grant.affectPosition)
+        ;
+      if (grant.affectRotation)
+        ;
+    } else {
+      if (grant.affectPosition)
+        ;
+      if (grant.affectRotation) {
+        this.addGrantRotation(bone, parentBone.quaternion, grant.ratio);
+      }
+    }
+    return this;
+  }
+  addGrantRotation(bone, q, ratio) {
+    _q.set(0, 0, 0, 1);
+    _q.slerp(q, ratio);
+    bone.quaternion.multiply(_q);
+    return this;
+  }
+}
+exports.MMDAnimationHelper = MMDAnimationHelper;
+//# sourceMappingURL=MMDAnimationHelper.cjs.map

node_modules/three-stdlib/animation/MMDAnimationHelper.d.ts

@@ -0,0 +1,93 @@
+import { AnimationClip, Audio, Camera, Object3D, Quaternion, SkinnedMesh, Bone, AnimationMixer } from 'three'
+
+import { CCDIKSolver } from './CCDIKSolver'
+import { MMDPhysics } from './MMDPhysics'
+
+export interface MMDAnimationHelperParameter {
+  sync?: boolean | undefined
+  afterglow?: number | undefined
+  resetPhysicsOnLoop?: boolean | undefined
+}
+
+export interface MMDAnimationHelperAddParameter {
+  animation?: AnimationClip | AnimationClip[] | undefined
+  physics?: boolean | undefined
+  warmup?: number | undefined
+  unitStep?: number | undefined
+  maxStepNum?: number | undefined
+  gravity?: number | undefined
+  delayTime?: number | undefined
+}
+
+export interface MMDAnimationHelperPoseParameter {
+  resetPose?: boolean | undefined
+  ik?: boolean | undefined
+  grant?: boolean | undefined
+}
+
+export interface MMDAnimationHelperMixer {
+  looped: boolean
+  mixer?: AnimationMixer | undefined
+  ikSolver: CCDIKSolver
+  grantSolver: GrantSolver
+  physics?: MMDPhysics | undefined
+  duration?: number | undefined
+}
+
+export class MMDAnimationHelper {
+  constructor(params?: MMDAnimationHelperParameter)
+  meshes: SkinnedMesh[]
+  camera: Camera | null
+  cameraTarget: Object3D
+  audio: Audio
+  audioManager: AudioManager
+  configuration: {
+    sync: boolean
+    afterglow: number
+    resetPhysicsOnLoop: boolean
+  }
+  enabled: {
+    animation: boolean
+    ik: boolean
+    grant: boolean
+    physics: boolean
+    cameraAnimation: boolean
+  }
+  objects: WeakMap<SkinnedMesh | Camera | AudioManager, MMDAnimationHelperMixer>
+  onBeforePhysics: (mesh: SkinnedMesh) => void
+  sharedPhysics: boolean
+  masterPhysics: null
+
+  add(object: SkinnedMesh | Camera | Audio, params?: MMDAnimationHelperAddParameter): this
+  remove(object: SkinnedMesh | Camera | Audio): this
+  update(delta: number): this
+  pose(mesh: SkinnedMesh, vpd: object, params?: MMDAnimationHelperPoseParameter): this
+  enable(key: string, enabled: boolean): this
+  createGrantSolver(mesh: SkinnedMesh): GrantSolver
+}
+
+export interface AudioManagerParameter {
+  delayTime?: number | undefined
+}
+
+export class AudioManager {
+  constructor(audio: Audio, params?: AudioManagerParameter)
+  audio: Audio
+  elapsedTime: number
+  currentTime: number
+  delayTime: number
+  audioDuration: number
+  duration: number
+
+  control(delta: number): this
+}
+
+export class GrantSolver {
+  constructor(mesh: SkinnedMesh, grants: object[])
+  mesh: SkinnedMesh
+  grants: object[]
+
+  update(): this
+  updateOne(gran: object[]): this
+  addGrantRotation(bone: Bone, q: Quaternion, ratio: number): this
+}

node_modules/three-stdlib/animation/MMDAnimationHelper.js

@@ -0,0 +1,689 @@
+import { Object3D, Vector3, Quaternion, AnimationMixer } from "three";
+import { CCDIKSolver } from "./CCDIKSolver.js";
+import { MMDPhysics } from "./MMDPhysics.js";
+class MMDAnimationHelper {
+  /**
+   * @param {Object} params - (optional)
+   * @param {boolean} params.sync - Whether animation durations of added objects are synched. Default is true.
+   * @param {Number} params.afterglow - Default is 0.0.
+   * @param {boolean} params.resetPhysicsOnLoop - Default is true.
+   */
+  constructor(params = {}) {
+    this.meshes = [];
+    this.camera = null;
+    this.cameraTarget = new Object3D();
+    this.cameraTarget.name = "target";
+    this.audio = null;
+    this.audioManager = null;
+    this.objects = /* @__PURE__ */ new WeakMap();
+    this.configuration = {
+      sync: params.sync !== void 0 ? params.sync : true,
+      afterglow: params.afterglow !== void 0 ? params.afterglow : 0,
+      resetPhysicsOnLoop: params.resetPhysicsOnLoop !== void 0 ? params.resetPhysicsOnLoop : true,
+      pmxAnimation: params.pmxAnimation !== void 0 ? params.pmxAnimation : false
+    };
+    this.enabled = {
+      animation: true,
+      ik: true,
+      grant: true,
+      physics: true,
+      cameraAnimation: true
+    };
+    this.onBeforePhysics = function() {
+    };
+    this.sharedPhysics = false;
+    this.masterPhysics = null;
+  }
+  /**
+   * Adds an Three.js Object to helper and setups animation.
+   * The anmation durations of added objects are synched
+   * if this.configuration.sync is true.
+   *
+   * @param {THREE.SkinnedMesh|THREE.Camera|THREE.Audio} object
+   * @param {Object} params - (optional)
+   * @param {THREE.AnimationClip|Array<THREE.AnimationClip>} params.animation - Only for THREE.SkinnedMesh and THREE.Camera. Default is undefined.
+   * @param {boolean} params.physics - Only for THREE.SkinnedMesh. Default is true.
+   * @param {Integer} params.warmup - Only for THREE.SkinnedMesh and physics is true. Default is 60.
+   * @param {Number} params.unitStep - Only for THREE.SkinnedMesh and physics is true. Default is 1 / 65.
+   * @param {Integer} params.maxStepNum - Only for THREE.SkinnedMesh and physics is true. Default is 3.
+   * @param {Vector3} params.gravity - Only for THREE.SkinnedMesh and physics is true. Default ( 0, - 9.8 * 10, 0 ).
+   * @param {Number} params.delayTime - Only for THREE.Audio. Default is 0.0.
+   * @return {MMDAnimationHelper}
+   */
+  add(object, params = {}) {
+    if (object.isSkinnedMesh) {
+      this._addMesh(object, params);
+    } else if (object.isCamera) {
+      this._setupCamera(object, params);
+    } else if (object.type === "Audio") {
+      this._setupAudio(object, params);
+    } else {
+      throw new Error(
+        "THREE.MMDAnimationHelper.add: accepts only THREE.SkinnedMesh or THREE.Camera or THREE.Audio instance."
+      );
+    }
+    if (this.configuration.sync)
+      this._syncDuration();
+    return this;
+  }
+  /**
+   * Removes an Three.js Object from helper.
+   *
+   * @param {THREE.SkinnedMesh|THREE.Camera|THREE.Audio} object
+   * @return {MMDAnimationHelper}
+   */
+  remove(object) {
+    if (object.isSkinnedMesh) {
+      this._removeMesh(object);
+    } else if (object.isCamera) {
+      this._clearCamera(object);
+    } else if (object.type === "Audio") {
+      this._clearAudio(object);
+    } else {
+      throw new Error(
+        "THREE.MMDAnimationHelper.remove: accepts only THREE.SkinnedMesh or THREE.Camera or THREE.Audio instance."
+      );
+    }
+    if (this.configuration.sync)
+      this._syncDuration();
+    return this;
+  }
+  /**
+   * Updates the animation.
+   *
+   * @param {Number} delta
+   * @return {MMDAnimationHelper}
+   */
+  update(delta) {
+    if (this.audioManager !== null)
+      this.audioManager.control(delta);
+    for (let i = 0; i < this.meshes.length; i++) {
+      this._animateMesh(this.meshes[i], delta);
+    }
+    if (this.sharedPhysics)
+      this._updateSharedPhysics(delta);
+    if (this.camera !== null)
+      this._animateCamera(this.camera, delta);
+    return this;
+  }
+  /**
+   * Changes the pose of SkinnedMesh as VPD specifies.
+   *
+   * @param {THREE.SkinnedMesh} mesh
+   * @param {Object} vpd - VPD content parsed MMDParser
+   * @param {Object} params - (optional)
+   * @param {boolean} params.resetPose - Default is true.
+   * @param {boolean} params.ik - Default is true.
+   * @param {boolean} params.grant - Default is true.
+   * @return {MMDAnimationHelper}
+   */
+  pose(mesh, vpd, params = {}) {
+    if (params.resetPose !== false)
+      mesh.pose();
+    const bones = mesh.skeleton.bones;
+    const boneParams = vpd.bones;
+    const boneNameDictionary = {};
+    for (let i = 0, il = bones.length; i < il; i++) {
+      boneNameDictionary[bones[i].name] = i;
+    }
+    const vector = new Vector3();
+    const quaternion = new Quaternion();
+    for (let i = 0, il = boneParams.length; i < il; i++) {
+      const boneParam = boneParams[i];
+      const boneIndex = boneNameDictionary[boneParam.name];
+      if (boneIndex === void 0)
+        continue;
+      const bone = bones[boneIndex];
+      bone.position.add(vector.fromArray(boneParam.translation));
+      bone.quaternion.multiply(quaternion.fromArray(boneParam.quaternion));
+    }
+    mesh.updateMatrixWorld(true);
+    if (this.configuration.pmxAnimation && mesh.geometry.userData.MMD && mesh.geometry.userData.MMD.format === "pmx") {
+      const sortedBonesData = this._sortBoneDataArray(mesh.geometry.userData.MMD.bones.slice());
+      const ikSolver = params.ik !== false ? this._createCCDIKSolver(mesh) : null;
+      const grantSolver = params.grant !== false ? this.createGrantSolver(mesh) : null;
+      this._animatePMXMesh(mesh, sortedBonesData, ikSolver, grantSolver);
+    } else {
+      if (params.ik !== false) {
+        this._createCCDIKSolver(mesh).update();
+      }
+      if (params.grant !== false) {
+        this.createGrantSolver(mesh).update();
+      }
+    }
+    return this;
+  }
+  /**
+   * Enabes/Disables an animation feature.
+   *
+   * @param {string} key
+   * @param {boolean} enabled
+   * @return {MMDAnimationHelper}
+   */
+  enable(key, enabled) {
+    if (this.enabled[key] === void 0) {
+      throw new Error("THREE.MMDAnimationHelper.enable: unknown key " + key);
+    }
+    this.enabled[key] = enabled;
+    if (key === "physics") {
+      for (let i = 0, il = this.meshes.length; i < il; i++) {
+        this._optimizeIK(this.meshes[i], enabled);
+      }
+    }
+    return this;
+  }
+  /**
+   * Creates an GrantSolver instance.
+   *
+   * @param {THREE.SkinnedMesh} mesh
+   * @return {GrantSolver}
+   */
+  createGrantSolver(mesh) {
+    return new GrantSolver(mesh, mesh.geometry.userData.MMD.grants);
+  }
+  // private methods
+  _addMesh(mesh, params) {
+    if (this.meshes.indexOf(mesh) >= 0) {
+      throw new Error("THREE.MMDAnimationHelper._addMesh: SkinnedMesh '" + mesh.name + "' has already been added.");
+    }
+    this.meshes.push(mesh);
+    this.objects.set(mesh, { looped: false });
+    this._setupMeshAnimation(mesh, params.animation);
+    if (params.physics !== false) {
+      this._setupMeshPhysics(mesh, params);
+    }
+    return this;
+  }
+  _setupCamera(camera, params) {
+    if (this.camera === camera) {
+      throw new Error("THREE.MMDAnimationHelper._setupCamera: Camera '" + camera.name + "' has already been set.");
+    }
+    if (this.camera)
+      this.clearCamera(this.camera);
+    this.camera = camera;
+    camera.add(this.cameraTarget);
+    this.objects.set(camera, {});
+    if (params.animation !== void 0) {
+      this._setupCameraAnimation(camera, params.animation);
+    }
+    return this;
+  }
+  _setupAudio(audio, params) {
+    if (this.audio === audio) {
+      throw new Error("THREE.MMDAnimationHelper._setupAudio: Audio '" + audio.name + "' has already been set.");
+    }
+    if (this.audio)
+      this.clearAudio(this.audio);
+    this.audio = audio;
+    this.audioManager = new AudioManager(audio, params);
+    this.objects.set(this.audioManager, {
+      duration: this.audioManager.duration
+    });
+    return this;
+  }
+  _removeMesh(mesh) {
+    let found = false;
+    let writeIndex = 0;
+    for (let i = 0, il = this.meshes.length; i < il; i++) {
+      if (this.meshes[i] === mesh) {
+        this.objects.delete(mesh);
+        found = true;
+        continue;
+      }
+      this.meshes[writeIndex++] = this.meshes[i];
+    }
+    if (!found) {
+      throw new Error(
+        "THREE.MMDAnimationHelper._removeMesh: SkinnedMesh '" + mesh.name + "' has not been added yet."
+      );
+    }
+    this.meshes.length = writeIndex;
+    return this;
+  }
+  _clearCamera(camera) {
+    if (camera !== this.camera) {
+      throw new Error("THREE.MMDAnimationHelper._clearCamera: Camera '" + camera.name + "' has not been set yet.");
+    }
+    this.camera.remove(this.cameraTarget);
+    this.objects.delete(this.camera);
+    this.camera = null;
+    return this;
+  }
+  _clearAudio(audio) {
+    if (audio !== this.audio) {
+      throw new Error("THREE.MMDAnimationHelper._clearAudio: Audio '" + audio.name + "' has not been set yet.");
+    }
+    this.objects.delete(this.audioManager);
+    this.audio = null;
+    this.audioManager = null;
+    return this;
+  }
+  _setupMeshAnimation(mesh, animation) {
+    const objects = this.objects.get(mesh);
+    if (animation !== void 0) {
+      const animations = Array.isArray(animation) ? animation : [animation];
+      objects.mixer = new AnimationMixer(mesh);
+      for (let i = 0, il = animations.length; i < il; i++) {
+        objects.mixer.clipAction(animations[i]).play();
+      }
+      objects.mixer.addEventListener("loop", function(event) {
+        const tracks = event.action._clip.tracks;
+        if (tracks.length > 0 && tracks[0].name.slice(0, 6) !== ".bones")
+          return;
+        objects.looped = true;
+      });
+    }
+    objects.ikSolver = this._createCCDIKSolver(mesh);
+    objects.grantSolver = this.createGrantSolver(mesh);
+    return this;
+  }
+  _setupCameraAnimation(camera, animation) {
+    const animations = Array.isArray(animation) ? animation : [animation];
+    const objects = this.objects.get(camera);
+    objects.mixer = new AnimationMixer(camera);
+    for (let i = 0, il = animations.length; i < il; i++) {
+      objects.mixer.clipAction(animations[i]).play();
+    }
+  }
+  _setupMeshPhysics(mesh, params) {
+    const objects = this.objects.get(mesh);
+    if (params.world === void 0 && this.sharedPhysics) {
+      const masterPhysics = this._getMasterPhysics();
+      if (masterPhysics !== null)
+        world = masterPhysics.world;
+    }
+    objects.physics = this._createMMDPhysics(mesh, params);
+    if (objects.mixer && params.animationWarmup !== false) {
+      this._animateMesh(mesh, 0);
+      objects.physics.reset();
+    }
+    objects.physics.warmup(params.warmup !== void 0 ? params.warmup : 60);
+    this._optimizeIK(mesh, true);
+  }
+  _animateMesh(mesh, delta) {
+    const objects = this.objects.get(mesh);
+    const mixer = objects.mixer;
+    const ikSolver = objects.ikSolver;
+    const grantSolver = objects.grantSolver;
+    const physics = objects.physics;
+    const looped = objects.looped;
+    if (mixer && this.enabled.animation) {
+      this._restoreBones(mesh);
+      mixer.update(delta);
+      this._saveBones(mesh);
+      if (this.configuration.pmxAnimation && mesh.geometry.userData.MMD && mesh.geometry.userData.MMD.format === "pmx") {
+        if (!objects.sortedBonesData)
+          objects.sortedBonesData = this._sortBoneDataArray(mesh.geometry.userData.MMD.bones.slice());
+        this._animatePMXMesh(
+          mesh,
+          objects.sortedBonesData,
+          ikSolver && this.enabled.ik ? ikSolver : null,
+          grantSolver && this.enabled.grant ? grantSolver : null
+        );
+      } else {
+        if (ikSolver && this.enabled.ik) {
+          mesh.updateMatrixWorld(true);
+          ikSolver.update();
+        }
+        if (grantSolver && this.enabled.grant) {
+          grantSolver.update();
+        }
+      }
+    }
+    if (looped === true && this.enabled.physics) {
+      if (physics && this.configuration.resetPhysicsOnLoop)
+        physics.reset();
+      objects.looped = false;
+    }
+    if (physics && this.enabled.physics && !this.sharedPhysics) {
+      this.onBeforePhysics(mesh);
+      physics.update(delta);
+    }
+  }
+  // Sort bones in order by 1. transformationClass and 2. bone index.
+  // In PMX animation system, bone transformations should be processed
+  // in this order.
+  _sortBoneDataArray(boneDataArray) {
+    return boneDataArray.sort(function(a, b) {
+      if (a.transformationClass !== b.transformationClass) {
+        return a.transformationClass - b.transformationClass;
+      } else {
+        return a.index - b.index;
+      }
+    });
+  }
+  // PMX Animation system is a bit too complex and doesn't great match to
+  // Three.js Animation system. This method attempts to simulate it as much as
+  // possible but doesn't perfectly simulate.
+  // This method is more costly than the regular one so
+  // you are recommended to set constructor parameter "pmxAnimation: true"
+  // only if your PMX model animation doesn't work well.
+  // If you need better method you would be required to write your own.
+  _animatePMXMesh(mesh, sortedBonesData, ikSolver, grantSolver) {
+    _quaternionIndex = 0;
+    _grantResultMap.clear();
+    for (let i = 0, il = sortedBonesData.length; i < il; i++) {
+      updateOne(mesh, sortedBonesData[i].index, ikSolver, grantSolver);
+    }
+    mesh.updateMatrixWorld(true);
+    return this;
+  }
+  _animateCamera(camera, delta) {
+    const mixer = this.objects.get(camera).mixer;
+    if (mixer && this.enabled.cameraAnimation) {
+      mixer.update(delta);
+      camera.updateProjectionMatrix();
+      camera.up.set(0, 1, 0);
+      camera.up.applyQuaternion(camera.quaternion);
+      camera.lookAt(this.cameraTarget.position);
+    }
+  }
+  _optimizeIK(mesh, physicsEnabled) {
+    const iks = mesh.geometry.userData.MMD.iks;
+    const bones = mesh.geometry.userData.MMD.bones;
+    for (let i = 0, il = iks.length; i < il; i++) {
+      const ik = iks[i];
+      const links = ik.links;
+      for (let j = 0, jl = links.length; j < jl; j++) {
+        const link = links[j];
+        if (physicsEnabled === true) {
+          link.enabled = bones[link.index].rigidBodyType > 0 ? false : true;
+        } else {
+          link.enabled = true;
+        }
+      }
+    }
+  }
+  _createCCDIKSolver(mesh) {
+    if (CCDIKSolver === void 0) {
+      throw new Error("THREE.MMDAnimationHelper: Import CCDIKSolver.");
+    }
+    return new CCDIKSolver(mesh, mesh.geometry.userData.MMD.iks);
+  }
+  _createMMDPhysics(mesh, params) {
+    if (MMDPhysics === void 0) {
+      throw new Error("THREE.MMDPhysics: Import MMDPhysics.");
+    }
+    return new MMDPhysics(mesh, mesh.geometry.userData.MMD.rigidBodies, mesh.geometry.userData.MMD.constraints, params);
+  }
+  /*
+   * Detects the longest duration and then sets it to them to sync.
+   * TODO: Not to access private properties ( ._actions and ._clip )
+   */
+  _syncDuration() {
+    let max = 0;
+    const objects = this.objects;
+    const meshes = this.meshes;
+    const camera = this.camera;
+    const audioManager = this.audioManager;
+    for (let i = 0, il = meshes.length; i < il; i++) {
+      const mixer = this.objects.get(meshes[i]).mixer;
+      if (mixer === void 0)
+        continue;
+      for (let j = 0; j < mixer._actions.length; j++) {
+        const clip = mixer._actions[j]._clip;
+        if (!objects.has(clip)) {
+          objects.set(clip, {
+            duration: clip.duration
+          });
+        }
+        max = Math.max(max, objects.get(clip).duration);
+      }
+    }
+    if (camera !== null) {
+      const mixer = this.objects.get(camera).mixer;
+      if (mixer !== void 0) {
+        for (let i = 0, il = mixer._actions.length; i < il; i++) {
+          const clip = mixer._actions[i]._clip;
+          if (!objects.has(clip)) {
+            objects.set(clip, {
+              duration: clip.duration
+            });
+          }
+          max = Math.max(max, objects.get(clip).duration);
+        }
+      }
+    }
+    if (audioManager !== null) {
+      max = Math.max(max, objects.get(audioManager).duration);
+    }
+    max += this.configuration.afterglow;
+    for (let i = 0, il = this.meshes.length; i < il; i++) {
+      const mixer = this.objects.get(this.meshes[i]).mixer;
+      if (mixer === void 0)
+        continue;
+      for (let j = 0, jl = mixer._actions.length; j < jl; j++) {
+        mixer._actions[j]._clip.duration = max;
+      }
+    }
+    if (camera !== null) {
+      const mixer = this.objects.get(camera).mixer;
+      if (mixer !== void 0) {
+        for (let i = 0, il = mixer._actions.length; i < il; i++) {
+          mixer._actions[i]._clip.duration = max;
+        }
+      }
+    }
+    if (audioManager !== null) {
+      audioManager.duration = max;
+    }
+  }
+  // workaround
+  _updatePropertyMixersBuffer(mesh) {
+    const mixer = this.objects.get(mesh).mixer;
+    const propertyMixers = mixer._bindings;
+    const accuIndex = mixer._accuIndex;
+    for (let i = 0, il = propertyMixers.length; i < il; i++) {
+      const propertyMixer = propertyMixers[i];
+      const buffer = propertyMixer.buffer;
+      const stride = propertyMixer.valueSize;
+      const offset = (accuIndex + 1) * stride;
+      propertyMixer.binding.getValue(buffer, offset);
+    }
+  }
+  /*
+   * Avoiding these two issues by restore/save bones before/after mixer animation.
+   *
+   * 1. PropertyMixer used by AnimationMixer holds cache value in .buffer.
+   *    Calculating IK, Grant, and Physics after mixer animation can break
+   *    the cache coherency.
+   *
+   * 2. Applying Grant two or more times without reset the posing breaks model.
+   */
+  _saveBones(mesh) {
+    const objects = this.objects.get(mesh);
+    const bones = mesh.skeleton.bones;
+    let backupBones = objects.backupBones;
+    if (backupBones === void 0) {
+      backupBones = new Float32Array(bones.length * 7);
+      objects.backupBones = backupBones;
+    }
+    for (let i = 0, il = bones.length; i < il; i++) {
+      const bone = bones[i];
+      bone.position.toArray(backupBones, i * 7);
+      bone.quaternion.toArray(backupBones, i * 7 + 3);
+    }
+  }
+  _restoreBones(mesh) {
+    const objects = this.objects.get(mesh);
+    const backupBones = objects.backupBones;
+    if (backupBones === void 0)
+      return;
+    const bones = mesh.skeleton.bones;
+    for (let i = 0, il = bones.length; i < il; i++) {
+      const bone = bones[i];
+      bone.position.fromArray(backupBones, i * 7);
+      bone.quaternion.fromArray(backupBones, i * 7 + 3);
+    }
+  }
+  // experimental
+  _getMasterPhysics() {
+    if (this.masterPhysics !== null)
+      return this.masterPhysics;
+    for (let i = 0, il = this.meshes.length; i < il; i++) {
+      const physics = this.meshes[i].physics;
+      if (physics !== void 0 && physics !== null) {
+        this.masterPhysics = physics;
+        return this.masterPhysics;
+      }
+    }
+    return null;
+  }
+  _updateSharedPhysics(delta) {
+    if (this.meshes.length === 0 || !this.enabled.physics || !this.sharedPhysics)
+      return;
+    const physics = this._getMasterPhysics();
+    if (physics === null)
+      return;
+    for (let i = 0, il = this.meshes.length; i < il; i++) {
+      const p = this.meshes[i].physics;
+      if (p !== null && p !== void 0) {
+        p.updateRigidBodies();
+      }
+    }
+    physics.stepSimulation(delta);
+    for (let i = 0, il = this.meshes.length; i < il; i++) {
+      const p = this.meshes[i].physics;
+      if (p !== null && p !== void 0) {
+        p.updateBones();
+      }
+    }
+  }
+}
+const _quaternions = [];
+let _quaternionIndex = 0;
+function getQuaternion() {
+  if (_quaternionIndex >= _quaternions.length) {
+    _quaternions.push(new Quaternion());
+  }
+  return _quaternions[_quaternionIndex++];
+}
+const _grantResultMap = /* @__PURE__ */ new Map();
+function updateOne(mesh, boneIndex, ikSolver, grantSolver) {
+  const bones = mesh.skeleton.bones;
+  const bonesData = mesh.geometry.userData.MMD.bones;
+  const boneData = bonesData[boneIndex];
+  const bone = bones[boneIndex];
+  if (_grantResultMap.has(boneIndex))
+    return;
+  const quaternion = getQuaternion();
+  _grantResultMap.set(boneIndex, quaternion.copy(bone.quaternion));
+  if (grantSolver && boneData.grant && !boneData.grant.isLocal && boneData.grant.affectRotation) {
+    const parentIndex = boneData.grant.parentIndex;
+    const ratio = boneData.grant.ratio;
+    if (!_grantResultMap.has(parentIndex)) {
+      updateOne(mesh, parentIndex, ikSolver, grantSolver);
+    }
+    grantSolver.addGrantRotation(bone, _grantResultMap.get(parentIndex), ratio);
+  }
+  if (ikSolver && boneData.ik) {
+    mesh.updateMatrixWorld(true);
+    ikSolver.updateOne(boneData.ik);
+    const links = boneData.ik.links;
+    for (let i = 0, il = links.length; i < il; i++) {
+      const link = links[i];
+      if (link.enabled === false)
+        continue;
+      const linkIndex = link.index;
+      if (_grantResultMap.has(linkIndex)) {
+        _grantResultMap.set(linkIndex, _grantResultMap.get(linkIndex).copy(bones[linkIndex].quaternion));
+      }
+    }
+  }
+  quaternion.copy(bone.quaternion);
+}
+class AudioManager {
+  /**
+   * @param {THREE.Audio} audio
+   * @param {Object} params - (optional)
+   * @param {Nuumber} params.delayTime
+   */
+  constructor(audio, params = {}) {
+    this.audio = audio;
+    this.elapsedTime = 0;
+    this.currentTime = 0;
+    this.delayTime = params.delayTime !== void 0 ? params.delayTime : 0;
+    this.audioDuration = this.audio.buffer.duration;
+    this.duration = this.audioDuration + this.delayTime;
+  }
+  /**
+   * @param {Number} delta
+   * @return {AudioManager}
+   */
+  control(delta) {
+    this.elapsed += delta;
+    this.currentTime += delta;
+    if (this._shouldStopAudio())
+      this.audio.stop();
+    if (this._shouldStartAudio())
+      this.audio.play();
+    return this;
+  }
+  // private methods
+  _shouldStartAudio() {
+    if (this.audio.isPlaying)
+      return false;
+    while (this.currentTime >= this.duration) {
+      this.currentTime -= this.duration;
+    }
+    if (this.currentTime < this.delayTime)
+      return false;
+    if (this.currentTime - this.delayTime > this.audioDuration)
+      return false;
+    return true;
+  }
+  _shouldStopAudio() {
+    return this.audio.isPlaying && this.currentTime >= this.duration;
+  }
+}
+const _q = /* @__PURE__ */ new Quaternion();
+class GrantSolver {
+  constructor(mesh, grants = []) {
+    this.mesh = mesh;
+    this.grants = grants;
+  }
+  /**
+   * Solve all the grant bones
+   * @return {GrantSolver}
+   */
+  update() {
+    const grants = this.grants;
+    for (let i = 0, il = grants.length; i < il; i++) {
+      this.updateOne(grants[i]);
+    }
+    return this;
+  }
+  /**
+   * Solve a grant bone
+   * @param {Object} grant - grant parameter
+   * @return {GrantSolver}
+   */
+  updateOne(grant) {
+    const bones = this.mesh.skeleton.bones;
+    const bone = bones[grant.index];
+    const parentBone = bones[grant.parentIndex];
+    if (grant.isLocal) {
+      if (grant.affectPosition)
+        ;
+      if (grant.affectRotation)
+        ;
+    } else {
+      if (grant.affectPosition)
+        ;
+      if (grant.affectRotation) {
+        this.addGrantRotation(bone, parentBone.quaternion, grant.ratio);
+      }
+    }
+    return this;
+  }
+  addGrantRotation(bone, q, ratio) {
+    _q.set(0, 0, 0, 1);
+    _q.slerp(q, ratio);
+    bone.quaternion.multiply(_q);
+    return this;
+  }
+}
+export {
+  MMDAnimationHelper
+};
+//# sourceMappingURL=MMDAnimationHelper.js.map

node_modules/three-stdlib/animation/MMDPhysics.cjs

@@ -0,0 +1,831 @@
+"use strict";
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const THREE = require("three");
+const CapsuleGeometry = require("../_polyfill/CapsuleGeometry.cjs");
+class MMDPhysics {
+  /**
+   * @param {THREE.SkinnedMesh} mesh
+   * @param {Array<Object>} rigidBodyParams
+   * @param {Array<Object>} (optional) constraintParams
+   * @param {Object} params - (optional)
+   * @param {Number} params.unitStep - Default is 1 / 65.
+   * @param {Integer} params.maxStepNum - Default is 3.
+   * @param {Vector3} params.gravity - Default is ( 0, - 9.8 * 10, 0 )
+   */
+  constructor(mesh, rigidBodyParams, constraintParams = [], params = {}) {
+    if (typeof Ammo === "undefined") {
+      throw new Error("THREE.MMDPhysics: Import ammo.js https://github.com/kripken/ammo.js");
+    }
+    this.manager = new ResourceManager();
+    this.mesh = mesh;
+    this.unitStep = params.unitStep !== void 0 ? params.unitStep : 1 / 65;
+    this.maxStepNum = params.maxStepNum !== void 0 ? params.maxStepNum : 3;
+    this.gravity = new THREE.Vector3(0, -9.8 * 10, 0);
+    if (params.gravity !== void 0)
+      this.gravity.copy(params.gravity);
+    this.world = params.world !== void 0 ? params.world : null;
+    this.bodies = [];
+    this.constraints = [];
+    this._init(mesh, rigidBodyParams, constraintParams);
+  }
+  /**
+   * Advances Physics calculation and updates bones.
+   *
+   * @param {Number} delta - time in second
+   * @return {MMDPhysics}
+   */
+  update(delta) {
+    const manager = this.manager;
+    const mesh = this.mesh;
+    let isNonDefaultScale = false;
+    const position = manager.allocThreeVector3();
+    const quaternion = manager.allocThreeQuaternion();
+    const scale = manager.allocThreeVector3();
+    mesh.matrixWorld.decompose(position, quaternion, scale);
+    if (scale.x !== 1 || scale.y !== 1 || scale.z !== 1) {
+      isNonDefaultScale = true;
+    }
+    let parent;
+    if (isNonDefaultScale) {
+      parent = mesh.parent;
+      if (parent !== null)
+        mesh.parent = null;
+      scale.copy(this.mesh.scale);
+      mesh.scale.set(1, 1, 1);
+      mesh.updateMatrixWorld(true);
+    }
+    this._updateRigidBodies();
+    this._stepSimulation(delta);
+    this._updateBones();
+    if (isNonDefaultScale) {
+      if (parent !== null)
+        mesh.parent = parent;
+      mesh.scale.copy(scale);
+    }
+    manager.freeThreeVector3(scale);
+    manager.freeThreeQuaternion(quaternion);
+    manager.freeThreeVector3(position);
+    return this;
+  }
+  /**
+   * Resets rigid bodies transorm to current bone's.
+   *
+   * @return {MMDPhysics}
+   */
+  reset() {
+    for (let i = 0, il = this.bodies.length; i < il; i++) {
+      this.bodies[i].reset();
+    }
+    return this;
+  }
+  /**
+   * Warm ups Rigid bodies. Calculates cycles steps.
+   *
+   * @param {Integer} cycles
+   * @return {MMDPhysics}
+   */
+  warmup(cycles) {
+    for (let i = 0; i < cycles; i++) {
+      this.update(1 / 60);
+    }
+    return this;
+  }
+  /**
+   * Sets gravity.
+   *
+   * @param {Vector3} gravity
+   * @return {MMDPhysicsHelper}
+   */
+  setGravity(gravity) {
+    this.world.setGravity(new Ammo.btVector3(gravity.x, gravity.y, gravity.z));
+    this.gravity.copy(gravity);
+    return this;
+  }
+  /**
+   * Creates MMDPhysicsHelper
+   *
+   * @return {MMDPhysicsHelper}
+   */
+  createHelper() {
+    return new MMDPhysicsHelper(this.mesh, this);
+  }
+  // private methods
+  _init(mesh, rigidBodyParams, constraintParams) {
+    const manager = this.manager;
+    const parent = mesh.parent;
+    if (parent !== null)
+      mesh.parent = null;
+    const currentPosition = manager.allocThreeVector3();
+    const currentQuaternion = manager.allocThreeQuaternion();
+    const currentScale = manager.allocThreeVector3();
+    currentPosition.copy(mesh.position);
+    currentQuaternion.copy(mesh.quaternion);
+    currentScale.copy(mesh.scale);
+    mesh.position.set(0, 0, 0);
+    mesh.quaternion.set(0, 0, 0, 1);
+    mesh.scale.set(1, 1, 1);
+    mesh.updateMatrixWorld(true);
+    if (this.world === null) {
+      this.world = this._createWorld();
+      this.setGravity(this.gravity);
+    }
+    this._initRigidBodies(rigidBodyParams);
+    this._initConstraints(constraintParams);
+    if (parent !== null)
+      mesh.parent = parent;
+    mesh.position.copy(currentPosition);
+    mesh.quaternion.copy(currentQuaternion);
+    mesh.scale.copy(currentScale);
+    mesh.updateMatrixWorld(true);
+    this.reset();
+    manager.freeThreeVector3(currentPosition);
+    manager.freeThreeQuaternion(currentQuaternion);
+    manager.freeThreeVector3(currentScale);
+  }
+  _createWorld() {
+    const config = new Ammo.btDefaultCollisionConfiguration();
+    const dispatcher = new Ammo.btCollisionDispatcher(config);
+    const cache = new Ammo.btDbvtBroadphase();
+    const solver = new Ammo.btSequentialImpulseConstraintSolver();
+    const world = new Ammo.btDiscreteDynamicsWorld(dispatcher, cache, solver, config);
+    return world;
+  }
+  _initRigidBodies(rigidBodies) {
+    for (let i = 0, il = rigidBodies.length; i < il; i++) {
+      this.bodies.push(new RigidBody(this.mesh, this.world, rigidBodies[i], this.manager));
+    }
+  }
+  _initConstraints(constraints) {
+    for (let i = 0, il = constraints.length; i < il; i++) {
+      const params = constraints[i];
+      const bodyA = this.bodies[params.rigidBodyIndex1];
+      const bodyB = this.bodies[params.rigidBodyIndex2];
+      this.constraints.push(new Constraint(this.mesh, this.world, bodyA, bodyB, params, this.manager));
+    }
+  }
+  _stepSimulation(delta) {
+    const unitStep = this.unitStep;
+    let stepTime = delta;
+    let maxStepNum = (delta / unitStep | 0) + 1;
+    if (stepTime < unitStep) {
+      stepTime = unitStep;
+      maxStepNum = 1;
+    }
+    if (maxStepNum > this.maxStepNum) {
+      maxStepNum = this.maxStepNum;
+    }
+    this.world.stepSimulation(stepTime, maxStepNum, unitStep);
+  }
+  _updateRigidBodies() {
+    for (let i = 0, il = this.bodies.length; i < il; i++) {
+      this.bodies[i].updateFromBone();
+    }
+  }
+  _updateBones() {
+    for (let i = 0, il = this.bodies.length; i < il; i++) {
+      this.bodies[i].updateBone();
+    }
+  }
+}
+class ResourceManager {
+  constructor() {
+    this.threeVector3s = [];
+    this.threeMatrix4s = [];
+    this.threeQuaternions = [];
+    this.threeEulers = [];
+    this.transforms = [];
+    this.quaternions = [];
+    this.vector3s = [];
+  }
+  allocThreeVector3() {
+    return this.threeVector3s.length > 0 ? this.threeVector3s.pop() : new THREE.Vector3();
+  }
+  freeThreeVector3(v) {
+    this.threeVector3s.push(v);
+  }
+  allocThreeMatrix4() {
+    return this.threeMatrix4s.length > 0 ? this.threeMatrix4s.pop() : new THREE.Matrix4();
+  }
+  freeThreeMatrix4(m) {
+    this.threeMatrix4s.push(m);
+  }
+  allocThreeQuaternion() {
+    return this.threeQuaternions.length > 0 ? this.threeQuaternions.pop() : new THREE.Quaternion();
+  }
+  freeThreeQuaternion(q) {
+    this.threeQuaternions.push(q);
+  }
+  allocThreeEuler() {
+    return this.threeEulers.length > 0 ? this.threeEulers.pop() : new THREE.Euler();
+  }
+  freeThreeEuler(e) {
+    this.threeEulers.push(e);
+  }
+  allocTransform() {
+    return this.transforms.length > 0 ? this.transforms.pop() : new Ammo.btTransform();
+  }
+  freeTransform(t) {
+    this.transforms.push(t);
+  }
+  allocQuaternion() {
+    return this.quaternions.length > 0 ? this.quaternions.pop() : new Ammo.btQuaternion();
+  }
+  freeQuaternion(q) {
+    this.quaternions.push(q);
+  }
+  allocVector3() {
+    return this.vector3s.length > 0 ? this.vector3s.pop() : new Ammo.btVector3();
+  }
+  freeVector3(v) {
+    this.vector3s.push(v);
+  }
+  setIdentity(t) {
+    t.setIdentity();
+  }
+  getBasis(t) {
+    var q = this.allocQuaternion();
+    t.getBasis().getRotation(q);
+    return q;
+  }
+  getBasisAsMatrix3(t) {
+    var q = this.getBasis(t);
+    var m = this.quaternionToMatrix3(q);
+    this.freeQuaternion(q);
+    return m;
+  }
+  getOrigin(t) {
+    return t.getOrigin();
+  }
+  setOrigin(t, v) {
+    t.getOrigin().setValue(v.x(), v.y(), v.z());
+  }
+  copyOrigin(t1, t2) {
+    var o = t2.getOrigin();
+    this.setOrigin(t1, o);
+  }
+  setBasis(t, q) {
+    t.setRotation(q);
+  }
+  setBasisFromMatrix3(t, m) {
+    var q = this.matrix3ToQuaternion(m);
+    this.setBasis(t, q);
+    this.freeQuaternion(q);
+  }
+  setOriginFromArray3(t, a) {
+    t.getOrigin().setValue(a[0], a[1], a[2]);
+  }
+  setOriginFromThreeVector3(t, v) {
+    t.getOrigin().setValue(v.x, v.y, v.z);
+  }
+  setBasisFromArray3(t, a) {
+    var thQ = this.allocThreeQuaternion();
+    var thE = this.allocThreeEuler();
+    thE.set(a[0], a[1], a[2]);
+    this.setBasisFromThreeQuaternion(t, thQ.setFromEuler(thE));
+    this.freeThreeEuler(thE);
+    this.freeThreeQuaternion(thQ);
+  }
+  setBasisFromThreeQuaternion(t, a) {
+    var q = this.allocQuaternion();
+    q.setX(a.x);
+    q.setY(a.y);
+    q.setZ(a.z);
+    q.setW(a.w);
+    this.setBasis(t, q);
+    this.freeQuaternion(q);
+  }
+  multiplyTransforms(t1, t2) {
+    var t = this.allocTransform();
+    this.setIdentity(t);
+    var m1 = this.getBasisAsMatrix3(t1);
+    var m2 = this.getBasisAsMatrix3(t2);
+    var o1 = this.getOrigin(t1);
+    var o2 = this.getOrigin(t2);
+    var v1 = this.multiplyMatrix3ByVector3(m1, o2);
+    var v2 = this.addVector3(v1, o1);
+    this.setOrigin(t, v2);
+    var m3 = this.multiplyMatrices3(m1, m2);
+    this.setBasisFromMatrix3(t, m3);
+    this.freeVector3(v1);
+    this.freeVector3(v2);
+    return t;
+  }
+  inverseTransform(t) {
+    var t2 = this.allocTransform();
+    var m1 = this.getBasisAsMatrix3(t);
+    var o = this.getOrigin(t);
+    var m2 = this.transposeMatrix3(m1);
+    var v1 = this.negativeVector3(o);
+    var v2 = this.multiplyMatrix3ByVector3(m2, v1);
+    this.setOrigin(t2, v2);
+    this.setBasisFromMatrix3(t2, m2);
+    this.freeVector3(v1);
+    this.freeVector3(v2);
+    return t2;
+  }
+  multiplyMatrices3(m1, m2) {
+    var m3 = [];
+    var v10 = this.rowOfMatrix3(m1, 0);
+    var v11 = this.rowOfMatrix3(m1, 1);
+    var v12 = this.rowOfMatrix3(m1, 2);
+    var v20 = this.columnOfMatrix3(m2, 0);
+    var v21 = this.columnOfMatrix3(m2, 1);
+    var v22 = this.columnOfMatrix3(m2, 2);
+    m3[0] = this.dotVectors3(v10, v20);
+    m3[1] = this.dotVectors3(v10, v21);
+    m3[2] = this.dotVectors3(v10, v22);
+    m3[3] = this.dotVectors3(v11, v20);
+    m3[4] = this.dotVectors3(v11, v21);
+    m3[5] = this.dotVectors3(v11, v22);
+    m3[6] = this.dotVectors3(v12, v20);
+    m3[7] = this.dotVectors3(v12, v21);
+    m3[8] = this.dotVectors3(v12, v22);
+    this.freeVector3(v10);
+    this.freeVector3(v11);
+    this.freeVector3(v12);
+    this.freeVector3(v20);
+    this.freeVector3(v21);
+    this.freeVector3(v22);
+    return m3;
+  }
+  addVector3(v1, v2) {
+    var v = this.allocVector3();
+    v.setValue(v1.x() + v2.x(), v1.y() + v2.y(), v1.z() + v2.z());
+    return v;
+  }
+  dotVectors3(v1, v2) {
+    return v1.x() * v2.x() + v1.y() * v2.y() + v1.z() * v2.z();
+  }
+  rowOfMatrix3(m, i) {
+    var v = this.allocVector3();
+    v.setValue(m[i * 3 + 0], m[i * 3 + 1], m[i * 3 + 2]);
+    return v;
+  }
+  columnOfMatrix3(m, i) {
+    var v = this.allocVector3();
+    v.setValue(m[i + 0], m[i + 3], m[i + 6]);
+    return v;
+  }
+  negativeVector3(v) {
+    var v2 = this.allocVector3();
+    v2.setValue(-v.x(), -v.y(), -v.z());
+    return v2;
+  }
+  multiplyMatrix3ByVector3(m, v) {
+    var v4 = this.allocVector3();
+    var v0 = this.rowOfMatrix3(m, 0);
+    var v1 = this.rowOfMatrix3(m, 1);
+    var v2 = this.rowOfMatrix3(m, 2);
+    var x = this.dotVectors3(v0, v);
+    var y = this.dotVectors3(v1, v);
+    var z = this.dotVectors3(v2, v);
+    v4.setValue(x, y, z);
+    this.freeVector3(v0);
+    this.freeVector3(v1);
+    this.freeVector3(v2);
+    return v4;
+  }
+  transposeMatrix3(m) {
+    var m2 = [];
+    m2[0] = m[0];
+    m2[1] = m[3];
+    m2[2] = m[6];
+    m2[3] = m[1];
+    m2[4] = m[4];
+    m2[5] = m[7];
+    m2[6] = m[2];
+    m2[7] = m[5];
+    m2[8] = m[8];
+    return m2;
+  }
+  quaternionToMatrix3(q) {
+    var m = [];
+    var x = q.x();
+    var y = q.y();
+    var z = q.z();
+    var w = q.w();
+    var xx = x * x;
+    var yy = y * y;
+    var zz = z * z;
+    var xy = x * y;
+    var yz = y * z;
+    var zx = z * x;
+    var xw = x * w;
+    var yw = y * w;
+    var zw = z * w;
+    m[0] = 1 - 2 * (yy + zz);
+    m[1] = 2 * (xy - zw);
+    m[2] = 2 * (zx + yw);
+    m[3] = 2 * (xy + zw);
+    m[4] = 1 - 2 * (zz + xx);
+    m[5] = 2 * (yz - xw);
+    m[6] = 2 * (zx - yw);
+    m[7] = 2 * (yz + xw);
+    m[8] = 1 - 2 * (xx + yy);
+    return m;
+  }
+  matrix3ToQuaternion(m) {
+    var t = m[0] + m[4] + m[8];
+    var s, x, y, z, w;
+    if (t > 0) {
+      s = Math.sqrt(t + 1) * 2;
+      w = 0.25 * s;
+      x = (m[7] - m[5]) / s;
+      y = (m[2] - m[6]) / s;
+      z = (m[3] - m[1]) / s;
+    } else if (m[0] > m[4] && m[0] > m[8]) {
+      s = Math.sqrt(1 + m[0] - m[4] - m[8]) * 2;
+      w = (m[7] - m[5]) / s;
+      x = 0.25 * s;
+      y = (m[1] + m[3]) / s;
+      z = (m[2] + m[6]) / s;
+    } else if (m[4] > m[8]) {
+      s = Math.sqrt(1 + m[4] - m[0] - m[8]) * 2;
+      w = (m[2] - m[6]) / s;
+      x = (m[1] + m[3]) / s;
+      y = 0.25 * s;
+      z = (m[5] + m[7]) / s;
+    } else {
+      s = Math.sqrt(1 + m[8] - m[0] - m[4]) * 2;
+      w = (m[3] - m[1]) / s;
+      x = (m[2] + m[6]) / s;
+      y = (m[5] + m[7]) / s;
+      z = 0.25 * s;
+    }
+    var q = this.allocQuaternion();
+    q.setX(x);
+    q.setY(y);
+    q.setZ(z);
+    q.setW(w);
+    return q;
+  }
+}
+class RigidBody {
+  constructor(mesh, world, params, manager) {
+    this.mesh = mesh;
+    this.world = world;
+    this.params = params;
+    this.manager = manager;
+    this.body = null;
+    this.bone = null;
+    this.boneOffsetForm = null;
+    this.boneOffsetFormInverse = null;
+    this._init();
+  }
+  /**
+   * Resets rigid body transform to the current bone's.
+   *
+   * @return {RigidBody}
+   */
+  reset() {
+    this._setTransformFromBone();
+    return this;
+  }
+  /**
+   * Updates rigid body's transform from the current bone.
+   *
+   * @return {RidigBody}
+   */
+  updateFromBone() {
+    if (this.params.boneIndex !== -1 && this.params.type === 0) {
+      this._setTransformFromBone();
+    }
+    return this;
+  }
+  /**
+   * Updates bone from the current ridid body's transform.
+   *
+   * @return {RidigBody}
+   */
+  updateBone() {
+    if (this.params.type === 0 || this.params.boneIndex === -1) {
+      return this;
+    }
+    this._updateBoneRotation();
+    if (this.params.type === 1) {
+      this._updateBonePosition();
+    }
+    this.bone.updateMatrixWorld(true);
+    if (this.params.type === 2) {
+      this._setPositionFromBone();
+    }
+    return this;
+  }
+  // private methods
+  _init() {
+    function generateShape(p) {
+      switch (p.shapeType) {
+        case 0:
+          return new Ammo.btSphereShape(p.width);
+        case 1:
+          return new Ammo.btBoxShape(new Ammo.btVector3(p.width, p.height, p.depth));
+        case 2:
+          return new Ammo.btCapsuleShape(p.width, p.height);
+        default:
+          throw new Error("unknown shape type " + p.shapeType);
+      }
+    }
+    const manager = this.manager;
+    const params = this.params;
+    const bones = this.mesh.skeleton.bones;
+    const bone = params.boneIndex === -1 ? new THREE.Bone() : bones[params.boneIndex];
+    const shape = generateShape(params);
+    const weight = params.type === 0 ? 0 : params.weight;
+    const localInertia = manager.allocVector3();
+    localInertia.setValue(0, 0, 0);
+    if (weight !== 0) {
+      shape.calculateLocalInertia(weight, localInertia);
+    }
+    const boneOffsetForm = manager.allocTransform();
+    manager.setIdentity(boneOffsetForm);
+    manager.setOriginFromArray3(boneOffsetForm, params.position);
+    manager.setBasisFromArray3(boneOffsetForm, params.rotation);
+    const vector = manager.allocThreeVector3();
+    const boneForm = manager.allocTransform();
+    manager.setIdentity(boneForm);
+    manager.setOriginFromThreeVector3(boneForm, bone.getWorldPosition(vector));
+    const form = manager.multiplyTransforms(boneForm, boneOffsetForm);
+    const state = new Ammo.btDefaultMotionState(form);
+    const info = new Ammo.btRigidBodyConstructionInfo(weight, state, shape, localInertia);
+    info.set_m_friction(params.friction);
+    info.set_m_restitution(params.restitution);
+    const body = new Ammo.btRigidBody(info);
+    if (params.type === 0) {
+      body.setCollisionFlags(body.getCollisionFlags() | 2);
+      body.setActivationState(4);
+    }
+    body.setDamping(params.positionDamping, params.rotationDamping);
+    body.setSleepingThresholds(0, 0);
+    this.world.addRigidBody(body, 1 << params.groupIndex, params.groupTarget);
+    this.body = body;
+    this.bone = bone;
+    this.boneOffsetForm = boneOffsetForm;
+    this.boneOffsetFormInverse = manager.inverseTransform(boneOffsetForm);
+    manager.freeVector3(localInertia);
+    manager.freeTransform(form);
+    manager.freeTransform(boneForm);
+    manager.freeThreeVector3(vector);
+  }
+  _getBoneTransform() {
+    const manager = this.manager;
+    const p = manager.allocThreeVector3();
+    const q = manager.allocThreeQuaternion();
+    const s = manager.allocThreeVector3();
+    this.bone.matrixWorld.decompose(p, q, s);
+    const tr = manager.allocTransform();
+    manager.setOriginFromThreeVector3(tr, p);
+    manager.setBasisFromThreeQuaternion(tr, q);
+    const form = manager.multiplyTransforms(tr, this.boneOffsetForm);
+    manager.freeTransform(tr);
+    manager.freeThreeVector3(s);
+    manager.freeThreeQuaternion(q);
+    manager.freeThreeVector3(p);
+    return form;
+  }
+  _getWorldTransformForBone() {
+    const manager = this.manager;
+    const tr = this.body.getCenterOfMassTransform();
+    return manager.multiplyTransforms(tr, this.boneOffsetFormInverse);
+  }
+  _setTransformFromBone() {
+    const manager = this.manager;
+    const form = this._getBoneTransform();
+    this.body.setCenterOfMassTransform(form);
+    this.body.getMotionState().setWorldTransform(form);
+    manager.freeTransform(form);
+  }
+  _setPositionFromBone() {
+    const manager = this.manager;
+    const form = this._getBoneTransform();
+    const tr = manager.allocTransform();
+    this.body.getMotionState().getWorldTransform(tr);
+    manager.copyOrigin(tr, form);
+    this.body.setCenterOfMassTransform(tr);
+    this.body.getMotionState().setWorldTransform(tr);
+    manager.freeTransform(tr);
+    manager.freeTransform(form);
+  }
+  _updateBoneRotation() {
+    const manager = this.manager;
+    const tr = this._getWorldTransformForBone();
+    const q = manager.getBasis(tr);
+    const thQ = manager.allocThreeQuaternion();
+    const thQ2 = manager.allocThreeQuaternion();
+    const thQ3 = manager.allocThreeQuaternion();
+    thQ.set(q.x(), q.y(), q.z(), q.w());
+    thQ2.setFromRotationMatrix(this.bone.matrixWorld);
+    thQ2.conjugate();
+    thQ2.multiply(thQ);
+    thQ3.setFromRotationMatrix(this.bone.matrix);
+    this.bone.quaternion.copy(thQ2.multiply(thQ3).normalize());
+    manager.freeThreeQuaternion(thQ);
+    manager.freeThreeQuaternion(thQ2);
+    manager.freeThreeQuaternion(thQ3);
+    manager.freeQuaternion(q);
+    manager.freeTransform(tr);
+  }
+  _updateBonePosition() {
+    const manager = this.manager;
+    const tr = this._getWorldTransformForBone();
+    const thV = manager.allocThreeVector3();
+    const o = manager.getOrigin(tr);
+    thV.set(o.x(), o.y(), o.z());
+    if (this.bone.parent) {
+      this.bone.parent.worldToLocal(thV);
+    }
+    this.bone.position.copy(thV);
+    manager.freeThreeVector3(thV);
+    manager.freeTransform(tr);
+  }
+}
+class Constraint {
+  /**
+   * @param {THREE.SkinnedMesh} mesh
+   * @param {Ammo.btDiscreteDynamicsWorld} world
+   * @param {RigidBody} bodyA
+   * @param {RigidBody} bodyB
+   * @param {Object} params
+   * @param {ResourceManager} manager
+   */
+  constructor(mesh, world, bodyA, bodyB, params, manager) {
+    this.mesh = mesh;
+    this.world = world;
+    this.bodyA = bodyA;
+    this.bodyB = bodyB;
+    this.params = params;
+    this.manager = manager;
+    this.constraint = null;
+    this._init();
+  }
+  // private method
+  _init() {
+    const manager = this.manager;
+    const params = this.params;
+    const bodyA = this.bodyA;
+    const bodyB = this.bodyB;
+    const form = manager.allocTransform();
+    manager.setIdentity(form);
+    manager.setOriginFromArray3(form, params.position);
+    manager.setBasisFromArray3(form, params.rotation);
+    const formA = manager.allocTransform();
+    const formB = manager.allocTransform();
+    bodyA.body.getMotionState().getWorldTransform(formA);
+    bodyB.body.getMotionState().getWorldTransform(formB);
+    const formInverseA = manager.inverseTransform(formA);
+    const formInverseB = manager.inverseTransform(formB);
+    const formA2 = manager.multiplyTransforms(formInverseA, form);
+    const formB2 = manager.multiplyTransforms(formInverseB, form);
+    const constraint = new Ammo.btGeneric6DofSpringConstraint(bodyA.body, bodyB.body, formA2, formB2, true);
+    const lll = manager.allocVector3();
+    const lul = manager.allocVector3();
+    const all = manager.allocVector3();
+    const aul = manager.allocVector3();
+    lll.setValue(params.translationLimitation1[0], params.translationLimitation1[1], params.translationLimitation1[2]);
+    lul.setValue(params.translationLimitation2[0], params.translationLimitation2[1], params.translationLimitation2[2]);
+    all.setValue(params.rotationLimitation1[0], params.rotationLimitation1[1], params.rotationLimitation1[2]);
+    aul.setValue(params.rotationLimitation2[0], params.rotationLimitation2[1], params.rotationLimitation2[2]);
+    constraint.setLinearLowerLimit(lll);
+    constraint.setLinearUpperLimit(lul);
+    constraint.setAngularLowerLimit(all);
+    constraint.setAngularUpperLimit(aul);
+    for (let i = 0; i < 3; i++) {
+      if (params.springPosition[i] !== 0) {
+        constraint.enableSpring(i, true);
+        constraint.setStiffness(i, params.springPosition[i]);
+      }
+    }
+    for (let i = 0; i < 3; i++) {
+      if (params.springRotation[i] !== 0) {
+        constraint.enableSpring(i + 3, true);
+        constraint.setStiffness(i + 3, params.springRotation[i]);
+      }
+    }
+    if (constraint.setParam !== void 0) {
+      for (let i = 0; i < 6; i++) {
+        constraint.setParam(2, 0.475, i);
+      }
+    }
+    this.world.addConstraint(constraint, true);
+    this.constraint = constraint;
+    manager.freeTransform(form);
+    manager.freeTransform(formA);
+    manager.freeTransform(formB);
+    manager.freeTransform(formInverseA);
+    manager.freeTransform(formInverseB);
+    manager.freeTransform(formA2);
+    manager.freeTransform(formB2);
+    manager.freeVector3(lll);
+    manager.freeVector3(lul);
+    manager.freeVector3(all);
+    manager.freeVector3(aul);
+  }
+}
+const _position = /* @__PURE__ */ new THREE.Vector3();
+const _quaternion = /* @__PURE__ */ new THREE.Quaternion();
+const _scale = /* @__PURE__ */ new THREE.Vector3();
+const _matrixWorldInv = /* @__PURE__ */ new THREE.Matrix4();
+class MMDPhysicsHelper extends THREE.Object3D {
+  /**
+   * Visualize Rigid bodies
+   *
+   * @param {THREE.SkinnedMesh} mesh
+   * @param {Physics} physics
+   */
+  constructor(mesh, physics) {
+    super();
+    this.root = mesh;
+    this.physics = physics;
+    this.matrix.copy(mesh.matrixWorld);
+    this.matrixAutoUpdate = false;
+    this.materials = [];
+    this.materials.push(
+      new THREE.MeshBasicMaterial({
+        color: new THREE.Color(16746632),
+        wireframe: true,
+        depthTest: false,
+        depthWrite: false,
+        opacity: 0.25,
+        transparent: true
+      })
+    );
+    this.materials.push(
+      new THREE.MeshBasicMaterial({
+        color: new THREE.Color(8978312),
+        wireframe: true,
+        depthTest: false,
+        depthWrite: false,
+        opacity: 0.25,
+        transparent: true
+      })
+    );
+    this.materials.push(
+      new THREE.MeshBasicMaterial({
+        color: new THREE.Color(8947967),
+        wireframe: true,
+        depthTest: false,
+        depthWrite: false,
+        opacity: 0.25,
+        transparent: true
+      })
+    );
+    this._init();
+  }
+  /**
+   * Frees the GPU-related resources allocated by this instance. Call this method whenever this instance is no longer used in your app.
+   */
+  dispose() {
+    const materials = this.materials;
+    const children = this.children;
+    for (let i = 0; i < materials.length; i++) {
+      materials[i].dispose();
+    }
+    for (let i = 0; i < children.length; i++) {
+      const child = children[i];
+      if (child.isMesh)
+        child.geometry.dispose();
+    }
+  }
+  /**
+   * Updates Rigid Bodies visualization.
+   */
+  updateMatrixWorld(force) {
+    var mesh = this.root;
+    if (this.visible) {
+      var bodies = this.physics.bodies;
+      _matrixWorldInv.copy(mesh.matrixWorld).decompose(_position, _quaternion, _scale).compose(_position, _quaternion, _scale.set(1, 1, 1)).invert();
+      for (var i = 0, il = bodies.length; i < il; i++) {
+        var body = bodies[i].body;
+        var child = this.children[i];
+        var tr = body.getCenterOfMassTransform();
+        var origin = tr.getOrigin();
+        var rotation = tr.getRotation();
+        child.position.set(origin.x(), origin.y(), origin.z()).applyMatrix4(_matrixWorldInv);
+        child.quaternion.setFromRotationMatrix(_matrixWorldInv).multiply(_quaternion.set(rotation.x(), rotation.y(), rotation.z(), rotation.w()));
+      }
+    }
+    this.matrix.copy(mesh.matrixWorld).decompose(_position, _quaternion, _scale).compose(_position, _quaternion, _scale.set(1, 1, 1));
+    super.updateMatrixWorld(force);
+  }
+  // private method
+  _init() {
+    var bodies = this.physics.bodies;
+    function createGeometry(param2) {
+      switch (param2.shapeType) {
+        case 0:
+          return new THREE.SphereGeometry(param2.width, 16, 8);
+        case 1:
+          return new THREE.BoxGeometry(param2.width * 2, param2.height * 2, param2.depth * 2, 8, 8, 8);
+        case 2:
+          return new CapsuleGeometry.CapsuleGeometry(param2.width, param2.height, 8, 16);
+        default:
+          return null;
+      }
+    }
+    for (var i = 0, il = bodies.length; i < il; i++) {
+      var param = bodies[i].params;
+      this.add(new THREE.Mesh(createGeometry(param), this.materials[param.type]));
+    }
+  }
+}
+exports.MMDPhysics = MMDPhysics;
+//# sourceMappingURL=MMDPhysics.cjs.map

node_modules/three-stdlib/animation/MMDPhysics.d.ts

@@ -0,0 +1,119 @@
+import { Bone, Euler, Matrix4, MeshBasicMaterial, Object3D, Quaternion, SkinnedMesh, Vector3 } from 'three'
+
+export interface MMDPhysicsParameter {
+  unitStep?: number | undefined
+  maxStepNum?: number | undefined
+  gravity?: Vector3 | undefined
+}
+
+export class MMDPhysics {
+  constructor(mesh: SkinnedMesh, rigidBodyParams: object[], constraintParams?: object[], params?: MMDPhysicsParameter)
+  manager: ResourceManager
+  mesh: SkinnedMesh
+  unitStep: number
+  maxStepNum: number
+  gravity: Vector3
+  world: null
+  bodies: RigidBody[]
+  constraints: Constraint[]
+
+  update(delta: number): this
+  reset(): this
+  warmup(cycles: number): this
+  setGravity(gravity: Vector3): this
+  createHelper(): MMDPhysicsHelper
+}
+
+export class ResourceManager {
+  constructor()
+  threeVector3s: Vector3[]
+  threeMatrix4s: Matrix4[]
+  threeQuaternions: Quaternion[]
+  threeEulers: Euler[]
+  transforms: object[]
+  quaternions: object[]
+  vector3s: object[]
+
+  allocThreeVector3(): void
+  freeThreeVector3(v: Vector3): void
+  allocThreeMatrix4(): void
+  freeThreeMatrix4(m: Matrix4): void
+  allocThreeQuaternion(): void
+  freeThreeQuaternion(q: Quaternion): void
+  allocThreeEuler(): void
+  freeThreeEuler(e: Euler): void
+  allocTransform(): void
+  freeTransform(t: object): void
+  allocQuaternion(): void
+  freeQuaternion(q: object): void
+  allocVector3(): void
+  freeVector3(v: object): void
+  setIdentity(): void
+  getBasis(t: object): object
+  getBasisAsMatrix3(t: object): object
+  getOrigin(t: object): object
+  setOrigin(t: object, v: object): void
+  copyOrigin(t1: object, t2: object): void
+  setBasis(t: object, q: object): void
+  setBasisFromMatrix3(t: object, m: object): void
+  setOriginFromArray3(t: object, a: number[]): void
+  setOriginFromThreeVector3(t: object, v: Vector3): void
+  setBasisFromArray3(t: object, a: number[]): void
+  setBasisFromThreeQuaternion(t: object, a: Quaternion): void
+  multiplyTransforms(t1: object, t2: object): object
+  inverseTransform(t: object): object
+  multiplyMatrices3(m1: object, m2: object): object
+  addVector3(v1: object, v2: object): object
+  dotVectors3(v1: object, v2: object): number
+  rowOfMatrix3(m: object, i: number): object
+  columnOfMatrix3(m: object, i: number): object
+  negativeVector3(v: object): object
+  multiplyMatrix3ByVector3(m: object, v: object): object
+  transposeMatrix3(m: object): object
+  quaternionToMatrix3(q: object): object
+  matrix3ToQuaternion(m: object): object
+}
+
+export class RigidBody {
+  constructor(mesh: SkinnedMesh, world: object, params: object, manager: ResourceManager)
+  mesh: SkinnedMesh
+  world: object
+  params: object
+  manager: ResourceManager
+
+  body: object
+  bone: Bone
+  boneOffsetForm: object
+  boneOffsetFormInverse: object
+
+  reset(): this
+  updateFromBone(): this
+  updateBone(): this
+}
+
+export class Constraint {
+  constructor(
+    mesh: SkinnedMesh,
+    world: object,
+    bodyA: RigidBody,
+    bodyB: RigidBody,
+    params: object,
+    manager: ResourceManager,
+  )
+
+  mesh: SkinnedMesh
+  world: object
+  bodyA: RigidBody
+  bodyB: RigidBody
+  params: object
+  manager: ResourceManager
+}
+
+export class MMDPhysicsHelper extends Object3D {
+  mesh: SkinnedMesh
+  physics: MMDPhysics
+  materials: [MeshBasicMaterial, MeshBasicMaterial, MeshBasicMaterial]
+
+  constructor(mesh: SkinnedMesh, physics: MMDPhysics)
+  dispose(): void
+}

node_modules/three-stdlib/animation/MMDPhysics.js

@@ -0,0 +1,831 @@
+import { Vector3, Matrix4, Quaternion, Euler, Bone, Object3D, MeshBasicMaterial, Color, Mesh, BoxGeometry, SphereGeometry } from "three";
+import { CapsuleGeometry } from "../_polyfill/CapsuleGeometry.js";
+class MMDPhysics {
+  /**
+   * @param {THREE.SkinnedMesh} mesh
+   * @param {Array<Object>} rigidBodyParams
+   * @param {Array<Object>} (optional) constraintParams
+   * @param {Object} params - (optional)
+   * @param {Number} params.unitStep - Default is 1 / 65.
+   * @param {Integer} params.maxStepNum - Default is 3.
+   * @param {Vector3} params.gravity - Default is ( 0, - 9.8 * 10, 0 )
+   */
+  constructor(mesh, rigidBodyParams, constraintParams = [], params = {}) {
+    if (typeof Ammo === "undefined") {
+      throw new Error("THREE.MMDPhysics: Import ammo.js https://github.com/kripken/ammo.js");
+    }
+    this.manager = new ResourceManager();
+    this.mesh = mesh;
+    this.unitStep = params.unitStep !== void 0 ? params.unitStep : 1 / 65;
+    this.maxStepNum = params.maxStepNum !== void 0 ? params.maxStepNum : 3;
+    this.gravity = new Vector3(0, -9.8 * 10, 0);
+    if (params.gravity !== void 0)
+      this.gravity.copy(params.gravity);
+    this.world = params.world !== void 0 ? params.world : null;
+    this.bodies = [];
+    this.constraints = [];
+    this._init(mesh, rigidBodyParams, constraintParams);
+  }
+  /**
+   * Advances Physics calculation and updates bones.
+   *
+   * @param {Number} delta - time in second
+   * @return {MMDPhysics}
+   */
+  update(delta) {
+    const manager = this.manager;
+    const mesh = this.mesh;
+    let isNonDefaultScale = false;
+    const position = manager.allocThreeVector3();
+    const quaternion = manager.allocThreeQuaternion();
+    const scale = manager.allocThreeVector3();
+    mesh.matrixWorld.decompose(position, quaternion, scale);
+    if (scale.x !== 1 || scale.y !== 1 || scale.z !== 1) {
+      isNonDefaultScale = true;
+    }
+    let parent;
+    if (isNonDefaultScale) {
+      parent = mesh.parent;
+      if (parent !== null)
+        mesh.parent = null;
+      scale.copy(this.mesh.scale);
+      mesh.scale.set(1, 1, 1);
+      mesh.updateMatrixWorld(true);
+    }
+    this._updateRigidBodies();
+    this._stepSimulation(delta);
+    this._updateBones();
+    if (isNonDefaultScale) {
+      if (parent !== null)
+        mesh.parent = parent;
+      mesh.scale.copy(scale);
+    }
+    manager.freeThreeVector3(scale);
+    manager.freeThreeQuaternion(quaternion);
+    manager.freeThreeVector3(position);
+    return this;
+  }
+  /**
+   * Resets rigid bodies transorm to current bone's.
+   *
+   * @return {MMDPhysics}
+   */
+  reset() {
+    for (let i = 0, il = this.bodies.length; i < il; i++) {
+      this.bodies[i].reset();
+    }
+    return this;
+  }
+  /**
+   * Warm ups Rigid bodies. Calculates cycles steps.
+   *
+   * @param {Integer} cycles
+   * @return {MMDPhysics}
+   */
+  warmup(cycles) {
+    for (let i = 0; i < cycles; i++) {
+      this.update(1 / 60);
+    }
+    return this;
+  }
+  /**
+   * Sets gravity.
+   *
+   * @param {Vector3} gravity
+   * @return {MMDPhysicsHelper}
+   */
+  setGravity(gravity) {
+    this.world.setGravity(new Ammo.btVector3(gravity.x, gravity.y, gravity.z));
+    this.gravity.copy(gravity);
+    return this;
+  }
+  /**
+   * Creates MMDPhysicsHelper
+   *
+   * @return {MMDPhysicsHelper}
+   */
+  createHelper() {
+    return new MMDPhysicsHelper(this.mesh, this);
+  }
+  // private methods
+  _init(mesh, rigidBodyParams, constraintParams) {
+    const manager = this.manager;
+    const parent = mesh.parent;
+    if (parent !== null)
+      mesh.parent = null;
+    const currentPosition = manager.allocThreeVector3();
+    const currentQuaternion = manager.allocThreeQuaternion();
+    const currentScale = manager.allocThreeVector3();
+    currentPosition.copy(mesh.position);
+    currentQuaternion.copy(mesh.quaternion);
+    currentScale.copy(mesh.scale);
+    mesh.position.set(0, 0, 0);
+    mesh.quaternion.set(0, 0, 0, 1);
+    mesh.scale.set(1, 1, 1);
+    mesh.updateMatrixWorld(true);
+    if (this.world === null) {
+      this.world = this._createWorld();
+      this.setGravity(this.gravity);
+    }
+    this._initRigidBodies(rigidBodyParams);
+    this._initConstraints(constraintParams);
+    if (parent !== null)
+      mesh.parent = parent;
+    mesh.position.copy(currentPosition);
+    mesh.quaternion.copy(currentQuaternion);
+    mesh.scale.copy(currentScale);
+    mesh.updateMatrixWorld(true);
+    this.reset();
+    manager.freeThreeVector3(currentPosition);
+    manager.freeThreeQuaternion(currentQuaternion);
+    manager.freeThreeVector3(currentScale);
+  }
+  _createWorld() {
+    const config = new Ammo.btDefaultCollisionConfiguration();
+    const dispatcher = new Ammo.btCollisionDispatcher(config);
+    const cache = new Ammo.btDbvtBroadphase();
+    const solver = new Ammo.btSequentialImpulseConstraintSolver();
+    const world = new Ammo.btDiscreteDynamicsWorld(dispatcher, cache, solver, config);
+    return world;
+  }
+  _initRigidBodies(rigidBodies) {
+    for (let i = 0, il = rigidBodies.length; i < il; i++) {
+      this.bodies.push(new RigidBody(this.mesh, this.world, rigidBodies[i], this.manager));
+    }
+  }
+  _initConstraints(constraints) {
+    for (let i = 0, il = constraints.length; i < il; i++) {
+      const params = constraints[i];
+      const bodyA = this.bodies[params.rigidBodyIndex1];
+      const bodyB = this.bodies[params.rigidBodyIndex2];
+      this.constraints.push(new Constraint(this.mesh, this.world, bodyA, bodyB, params, this.manager));
+    }
+  }
+  _stepSimulation(delta) {
+    const unitStep = this.unitStep;
+    let stepTime = delta;
+    let maxStepNum = (delta / unitStep | 0) + 1;
+    if (stepTime < unitStep) {
+      stepTime = unitStep;
+      maxStepNum = 1;
+    }
+    if (maxStepNum > this.maxStepNum) {
+      maxStepNum = this.maxStepNum;
+    }
+    this.world.stepSimulation(stepTime, maxStepNum, unitStep);
+  }
+  _updateRigidBodies() {
+    for (let i = 0, il = this.bodies.length; i < il; i++) {
+      this.bodies[i].updateFromBone();
+    }
+  }
+  _updateBones() {
+    for (let i = 0, il = this.bodies.length; i < il; i++) {
+      this.bodies[i].updateBone();
+    }
+  }
+}
+class ResourceManager {
+  constructor() {
+    this.threeVector3s = [];
+    this.threeMatrix4s = [];
+    this.threeQuaternions = [];
+    this.threeEulers = [];
+    this.transforms = [];
+    this.quaternions = [];
+    this.vector3s = [];
+  }
+  allocThreeVector3() {
+    return this.threeVector3s.length > 0 ? this.threeVector3s.pop() : new Vector3();
+  }
+  freeThreeVector3(v) {
+    this.threeVector3s.push(v);
+  }
+  allocThreeMatrix4() {
+    return this.threeMatrix4s.length > 0 ? this.threeMatrix4s.pop() : new Matrix4();
+  }
+  freeThreeMatrix4(m) {
+    this.threeMatrix4s.push(m);
+  }
+  allocThreeQuaternion() {
+    return this.threeQuaternions.length > 0 ? this.threeQuaternions.pop() : new Quaternion();
+  }
+  freeThreeQuaternion(q) {
+    this.threeQuaternions.push(q);
+  }
+  allocThreeEuler() {
+    return this.threeEulers.length > 0 ? this.threeEulers.pop() : new Euler();
+  }
+  freeThreeEuler(e) {
+    this.threeEulers.push(e);
+  }
+  allocTransform() {
+    return this.transforms.length > 0 ? this.transforms.pop() : new Ammo.btTransform();
+  }
+  freeTransform(t) {
+    this.transforms.push(t);
+  }
+  allocQuaternion() {
+    return this.quaternions.length > 0 ? this.quaternions.pop() : new Ammo.btQuaternion();
+  }
+  freeQuaternion(q) {
+    this.quaternions.push(q);
+  }
+  allocVector3() {
+    return this.vector3s.length > 0 ? this.vector3s.pop() : new Ammo.btVector3();
+  }
+  freeVector3(v) {
+    this.vector3s.push(v);
+  }
+  setIdentity(t) {
+    t.setIdentity();
+  }
+  getBasis(t) {
+    var q = this.allocQuaternion();
+    t.getBasis().getRotation(q);
+    return q;
+  }
+  getBasisAsMatrix3(t) {
+    var q = this.getBasis(t);
+    var m = this.quaternionToMatrix3(q);
+    this.freeQuaternion(q);
+    return m;
+  }
+  getOrigin(t) {
+    return t.getOrigin();
+  }
+  setOrigin(t, v) {
+    t.getOrigin().setValue(v.x(), v.y(), v.z());
+  }
+  copyOrigin(t1, t2) {
+    var o = t2.getOrigin();
+    this.setOrigin(t1, o);
+  }
+  setBasis(t, q) {
+    t.setRotation(q);
+  }
+  setBasisFromMatrix3(t, m) {
+    var q = this.matrix3ToQuaternion(m);
+    this.setBasis(t, q);
+    this.freeQuaternion(q);
+  }
+  setOriginFromArray3(t, a) {
+    t.getOrigin().setValue(a[0], a[1], a[2]);
+  }
+  setOriginFromThreeVector3(t, v) {
+    t.getOrigin().setValue(v.x, v.y, v.z);
+  }
+  setBasisFromArray3(t, a) {
+    var thQ = this.allocThreeQuaternion();
+    var thE = this.allocThreeEuler();
+    thE.set(a[0], a[1], a[2]);
+    this.setBasisFromThreeQuaternion(t, thQ.setFromEuler(thE));
+    this.freeThreeEuler(thE);
+    this.freeThreeQuaternion(thQ);
+  }
+  setBasisFromThreeQuaternion(t, a) {
+    var q = this.allocQuaternion();
+    q.setX(a.x);
+    q.setY(a.y);
+    q.setZ(a.z);
+    q.setW(a.w);
+    this.setBasis(t, q);
+    this.freeQuaternion(q);
+  }
+  multiplyTransforms(t1, t2) {
+    var t = this.allocTransform();
+    this.setIdentity(t);
+    var m1 = this.getBasisAsMatrix3(t1);
+    var m2 = this.getBasisAsMatrix3(t2);
+    var o1 = this.getOrigin(t1);
+    var o2 = this.getOrigin(t2);
+    var v1 = this.multiplyMatrix3ByVector3(m1, o2);
+    var v2 = this.addVector3(v1, o1);
+    this.setOrigin(t, v2);
+    var m3 = this.multiplyMatrices3(m1, m2);
+    this.setBasisFromMatrix3(t, m3);
+    this.freeVector3(v1);
+    this.freeVector3(v2);
+    return t;
+  }
+  inverseTransform(t) {
+    var t2 = this.allocTransform();
+    var m1 = this.getBasisAsMatrix3(t);
+    var o = this.getOrigin(t);
+    var m2 = this.transposeMatrix3(m1);
+    var v1 = this.negativeVector3(o);
+    var v2 = this.multiplyMatrix3ByVector3(m2, v1);
+    this.setOrigin(t2, v2);
+    this.setBasisFromMatrix3(t2, m2);
+    this.freeVector3(v1);
+    this.freeVector3(v2);
+    return t2;
+  }
+  multiplyMatrices3(m1, m2) {
+    var m3 = [];
+    var v10 = this.rowOfMatrix3(m1, 0);
+    var v11 = this.rowOfMatrix3(m1, 1);
+    var v12 = this.rowOfMatrix3(m1, 2);
+    var v20 = this.columnOfMatrix3(m2, 0);
+    var v21 = this.columnOfMatrix3(m2, 1);
+    var v22 = this.columnOfMatrix3(m2, 2);
+    m3[0] = this.dotVectors3(v10, v20);
+    m3[1] = this.dotVectors3(v10, v21);
+    m3[2] = this.dotVectors3(v10, v22);
+    m3[3] = this.dotVectors3(v11, v20);
+    m3[4] = this.dotVectors3(v11, v21);
+    m3[5] = this.dotVectors3(v11, v22);
+    m3[6] = this.dotVectors3(v12, v20);
+    m3[7] = this.dotVectors3(v12, v21);
+    m3[8] = this.dotVectors3(v12, v22);
+    this.freeVector3(v10);
+    this.freeVector3(v11);
+    this.freeVector3(v12);
+    this.freeVector3(v20);
+    this.freeVector3(v21);
+    this.freeVector3(v22);
+    return m3;
+  }
+  addVector3(v1, v2) {
+    var v = this.allocVector3();
+    v.setValue(v1.x() + v2.x(), v1.y() + v2.y(), v1.z() + v2.z());
+    return v;
+  }
+  dotVectors3(v1, v2) {
+    return v1.x() * v2.x() + v1.y() * v2.y() + v1.z() * v2.z();
+  }
+  rowOfMatrix3(m, i) {
+    var v = this.allocVector3();
+    v.setValue(m[i * 3 + 0], m[i * 3 + 1], m[i * 3 + 2]);
+    return v;
+  }
+  columnOfMatrix3(m, i) {
+    var v = this.allocVector3();
+    v.setValue(m[i + 0], m[i + 3], m[i + 6]);
+    return v;
+  }
+  negativeVector3(v) {
+    var v2 = this.allocVector3();
+    v2.setValue(-v.x(), -v.y(), -v.z());
+    return v2;
+  }
+  multiplyMatrix3ByVector3(m, v) {
+    var v4 = this.allocVector3();
+    var v0 = this.rowOfMatrix3(m, 0);
+    var v1 = this.rowOfMatrix3(m, 1);
+    var v2 = this.rowOfMatrix3(m, 2);
+    var x = this.dotVectors3(v0, v);
+    var y = this.dotVectors3(v1, v);
+    var z = this.dotVectors3(v2, v);
+    v4.setValue(x, y, z);
+    this.freeVector3(v0);
+    this.freeVector3(v1);
+    this.freeVector3(v2);
+    return v4;
+  }
+  transposeMatrix3(m) {
+    var m2 = [];
+    m2[0] = m[0];
+    m2[1] = m[3];
+    m2[2] = m[6];
+    m2[3] = m[1];
+    m2[4] = m[4];
+    m2[5] = m[7];
+    m2[6] = m[2];
+    m2[7] = m[5];
+    m2[8] = m[8];
+    return m2;
+  }
+  quaternionToMatrix3(q) {
+    var m = [];
+    var x = q.x();
+    var y = q.y();
+    var z = q.z();
+    var w = q.w();
+    var xx = x * x;
+    var yy = y * y;
+    var zz = z * z;
+    var xy = x * y;
+    var yz = y * z;
+    var zx = z * x;
+    var xw = x * w;
+    var yw = y * w;
+    var zw = z * w;
+    m[0] = 1 - 2 * (yy + zz);
+    m[1] = 2 * (xy - zw);
+    m[2] = 2 * (zx + yw);
+    m[3] = 2 * (xy + zw);
+    m[4] = 1 - 2 * (zz + xx);
+    m[5] = 2 * (yz - xw);
+    m[6] = 2 * (zx - yw);
+    m[7] = 2 * (yz + xw);
+    m[8] = 1 - 2 * (xx + yy);
+    return m;
+  }
+  matrix3ToQuaternion(m) {
+    var t = m[0] + m[4] + m[8];
+    var s, x, y, z, w;
+    if (t > 0) {
+      s = Math.sqrt(t + 1) * 2;
+      w = 0.25 * s;
+      x = (m[7] - m[5]) / s;
+      y = (m[2] - m[6]) / s;
+      z = (m[3] - m[1]) / s;
+    } else if (m[0] > m[4] && m[0] > m[8]) {
+      s = Math.sqrt(1 + m[0] - m[4] - m[8]) * 2;
+      w = (m[7] - m[5]) / s;
+      x = 0.25 * s;
+      y = (m[1] + m[3]) / s;
+      z = (m[2] + m[6]) / s;
+    } else if (m[4] > m[8]) {
+      s = Math.sqrt(1 + m[4] - m[0] - m[8]) * 2;
+      w = (m[2] - m[6]) / s;
+      x = (m[1] + m[3]) / s;
+      y = 0.25 * s;
+      z = (m[5] + m[7]) / s;
+    } else {
+      s = Math.sqrt(1 + m[8] - m[0] - m[4]) * 2;
+      w = (m[3] - m[1]) / s;
+      x = (m[2] + m[6]) / s;
+      y = (m[5] + m[7]) / s;
+      z = 0.25 * s;
+    }
+    var q = this.allocQuaternion();
+    q.setX(x);
+    q.setY(y);
+    q.setZ(z);
+    q.setW(w);
+    return q;
+  }
+}
+class RigidBody {
+  constructor(mesh, world, params, manager) {
+    this.mesh = mesh;
+    this.world = world;
+    this.params = params;
+    this.manager = manager;
+    this.body = null;
+    this.bone = null;
+    this.boneOffsetForm = null;
+    this.boneOffsetFormInverse = null;
+    this._init();
+  }
+  /**
+   * Resets rigid body transform to the current bone's.
+   *
+   * @return {RigidBody}
+   */
+  reset() {
+    this._setTransformFromBone();
+    return this;
+  }
+  /**
+   * Updates rigid body's transform from the current bone.
+   *
+   * @return {RidigBody}
+   */
+  updateFromBone() {
+    if (this.params.boneIndex !== -1 && this.params.type === 0) {
+      this._setTransformFromBone();
+    }
+    return this;
+  }
+  /**
+   * Updates bone from the current ridid body's transform.
+   *
+   * @return {RidigBody}
+   */
+  updateBone() {
+    if (this.params.type === 0 || this.params.boneIndex === -1) {
+      return this;
+    }
+    this._updateBoneRotation();
+    if (this.params.type === 1) {
+      this._updateBonePosition();
+    }
+    this.bone.updateMatrixWorld(true);
+    if (this.params.type === 2) {
+      this._setPositionFromBone();
+    }
+    return this;
+  }
+  // private methods
+  _init() {
+    function generateShape(p) {
+      switch (p.shapeType) {
+        case 0:
+          return new Ammo.btSphereShape(p.width);
+        case 1:
+          return new Ammo.btBoxShape(new Ammo.btVector3(p.width, p.height, p.depth));
+        case 2:
+          return new Ammo.btCapsuleShape(p.width, p.height);
+        default:
+          throw new Error("unknown shape type " + p.shapeType);
+      }
+    }
+    const manager = this.manager;
+    const params = this.params;
+    const bones = this.mesh.skeleton.bones;
+    const bone = params.boneIndex === -1 ? new Bone() : bones[params.boneIndex];
+    const shape = generateShape(params);
+    const weight = params.type === 0 ? 0 : params.weight;
+    const localInertia = manager.allocVector3();
+    localInertia.setValue(0, 0, 0);
+    if (weight !== 0) {
+      shape.calculateLocalInertia(weight, localInertia);
+    }
+    const boneOffsetForm = manager.allocTransform();
+    manager.setIdentity(boneOffsetForm);
+    manager.setOriginFromArray3(boneOffsetForm, params.position);
+    manager.setBasisFromArray3(boneOffsetForm, params.rotation);
+    const vector = manager.allocThreeVector3();
+    const boneForm = manager.allocTransform();
+    manager.setIdentity(boneForm);
+    manager.setOriginFromThreeVector3(boneForm, bone.getWorldPosition(vector));
+    const form = manager.multiplyTransforms(boneForm, boneOffsetForm);
+    const state = new Ammo.btDefaultMotionState(form);
+    const info = new Ammo.btRigidBodyConstructionInfo(weight, state, shape, localInertia);
+    info.set_m_friction(params.friction);
+    info.set_m_restitution(params.restitution);
+    const body = new Ammo.btRigidBody(info);
+    if (params.type === 0) {
+      body.setCollisionFlags(body.getCollisionFlags() | 2);
+      body.setActivationState(4);
+    }
+    body.setDamping(params.positionDamping, params.rotationDamping);
+    body.setSleepingThresholds(0, 0);
+    this.world.addRigidBody(body, 1 << params.groupIndex, params.groupTarget);
+    this.body = body;
+    this.bone = bone;
+    this.boneOffsetForm = boneOffsetForm;
+    this.boneOffsetFormInverse = manager.inverseTransform(boneOffsetForm);
+    manager.freeVector3(localInertia);
+    manager.freeTransform(form);
+    manager.freeTransform(boneForm);
+    manager.freeThreeVector3(vector);
+  }
+  _getBoneTransform() {
+    const manager = this.manager;
+    const p = manager.allocThreeVector3();
+    const q = manager.allocThreeQuaternion();
+    const s = manager.allocThreeVector3();
+    this.bone.matrixWorld.decompose(p, q, s);
+    const tr = manager.allocTransform();
+    manager.setOriginFromThreeVector3(tr, p);
+    manager.setBasisFromThreeQuaternion(tr, q);
+    const form = manager.multiplyTransforms(tr, this.boneOffsetForm);
+    manager.freeTransform(tr);
+    manager.freeThreeVector3(s);
+    manager.freeThreeQuaternion(q);
+    manager.freeThreeVector3(p);
+    return form;
+  }
+  _getWorldTransformForBone() {
+    const manager = this.manager;
+    const tr = this.body.getCenterOfMassTransform();
+    return manager.multiplyTransforms(tr, this.boneOffsetFormInverse);
+  }
+  _setTransformFromBone() {
+    const manager = this.manager;
+    const form = this._getBoneTransform();
+    this.body.setCenterOfMassTransform(form);
+    this.body.getMotionState().setWorldTransform(form);
+    manager.freeTransform(form);
+  }
+  _setPositionFromBone() {
+    const manager = this.manager;
+    const form = this._getBoneTransform();
+    const tr = manager.allocTransform();
+    this.body.getMotionState().getWorldTransform(tr);
+    manager.copyOrigin(tr, form);
+    this.body.setCenterOfMassTransform(tr);
+    this.body.getMotionState().setWorldTransform(tr);
+    manager.freeTransform(tr);
+    manager.freeTransform(form);
+  }
+  _updateBoneRotation() {
+    const manager = this.manager;
+    const tr = this._getWorldTransformForBone();
+    const q = manager.getBasis(tr);
+    const thQ = manager.allocThreeQuaternion();
+    const thQ2 = manager.allocThreeQuaternion();
+    const thQ3 = manager.allocThreeQuaternion();
+    thQ.set(q.x(), q.y(), q.z(), q.w());
+    thQ2.setFromRotationMatrix(this.bone.matrixWorld);
+    thQ2.conjugate();
+    thQ2.multiply(thQ);
+    thQ3.setFromRotationMatrix(this.bone.matrix);
+    this.bone.quaternion.copy(thQ2.multiply(thQ3).normalize());
+    manager.freeThreeQuaternion(thQ);
+    manager.freeThreeQuaternion(thQ2);
+    manager.freeThreeQuaternion(thQ3);
+    manager.freeQuaternion(q);
+    manager.freeTransform(tr);
+  }
+  _updateBonePosition() {
+    const manager = this.manager;
+    const tr = this._getWorldTransformForBone();
+    const thV = manager.allocThreeVector3();
+    const o = manager.getOrigin(tr);
+    thV.set(o.x(), o.y(), o.z());
+    if (this.bone.parent) {
+      this.bone.parent.worldToLocal(thV);
+    }
+    this.bone.position.copy(thV);
+    manager.freeThreeVector3(thV);
+    manager.freeTransform(tr);
+  }
+}
+class Constraint {
+  /**
+   * @param {THREE.SkinnedMesh} mesh
+   * @param {Ammo.btDiscreteDynamicsWorld} world
+   * @param {RigidBody} bodyA
+   * @param {RigidBody} bodyB
+   * @param {Object} params
+   * @param {ResourceManager} manager
+   */
+  constructor(mesh, world, bodyA, bodyB, params, manager) {
+    this.mesh = mesh;
+    this.world = world;
+    this.bodyA = bodyA;
+    this.bodyB = bodyB;
+    this.params = params;
+    this.manager = manager;
+    this.constraint = null;
+    this._init();
+  }
+  // private method
+  _init() {
+    const manager = this.manager;
+    const params = this.params;
+    const bodyA = this.bodyA;
+    const bodyB = this.bodyB;
+    const form = manager.allocTransform();
+    manager.setIdentity(form);
+    manager.setOriginFromArray3(form, params.position);
+    manager.setBasisFromArray3(form, params.rotation);
+    const formA = manager.allocTransform();
+    const formB = manager.allocTransform();
+    bodyA.body.getMotionState().getWorldTransform(formA);
+    bodyB.body.getMotionState().getWorldTransform(formB);
+    const formInverseA = manager.inverseTransform(formA);
+    const formInverseB = manager.inverseTransform(formB);
+    const formA2 = manager.multiplyTransforms(formInverseA, form);
+    const formB2 = manager.multiplyTransforms(formInverseB, form);
+    const constraint = new Ammo.btGeneric6DofSpringConstraint(bodyA.body, bodyB.body, formA2, formB2, true);
+    const lll = manager.allocVector3();
+    const lul = manager.allocVector3();
+    const all = manager.allocVector3();
+    const aul = manager.allocVector3();
+    lll.setValue(params.translationLimitation1[0], params.translationLimitation1[1], params.translationLimitation1[2]);
+    lul.setValue(params.translationLimitation2[0], params.translationLimitation2[1], params.translationLimitation2[2]);
+    all.setValue(params.rotationLimitation1[0], params.rotationLimitation1[1], params.rotationLimitation1[2]);
+    aul.setValue(params.rotationLimitation2[0], params.rotationLimitation2[1], params.rotationLimitation2[2]);
+    constraint.setLinearLowerLimit(lll);
+    constraint.setLinearUpperLimit(lul);
+    constraint.setAngularLowerLimit(all);
+    constraint.setAngularUpperLimit(aul);
+    for (let i = 0; i < 3; i++) {
+      if (params.springPosition[i] !== 0) {
+        constraint.enableSpring(i, true);
+        constraint.setStiffness(i, params.springPosition[i]);
+      }
+    }
+    for (let i = 0; i < 3; i++) {
+      if (params.springRotation[i] !== 0) {
+        constraint.enableSpring(i + 3, true);
+        constraint.setStiffness(i + 3, params.springRotation[i]);
+      }
+    }
+    if (constraint.setParam !== void 0) {
+      for (let i = 0; i < 6; i++) {
+        constraint.setParam(2, 0.475, i);
+      }
+    }
+    this.world.addConstraint(constraint, true);
+    this.constraint = constraint;
+    manager.freeTransform(form);
+    manager.freeTransform(formA);
+    manager.freeTransform(formB);
+    manager.freeTransform(formInverseA);
+    manager.freeTransform(formInverseB);
+    manager.freeTransform(formA2);
+    manager.freeTransform(formB2);
+    manager.freeVector3(lll);
+    manager.freeVector3(lul);
+    manager.freeVector3(all);
+    manager.freeVector3(aul);
+  }
+}
+const _position = /* @__PURE__ */ new Vector3();
+const _quaternion = /* @__PURE__ */ new Quaternion();
+const _scale = /* @__PURE__ */ new Vector3();
+const _matrixWorldInv = /* @__PURE__ */ new Matrix4();
+class MMDPhysicsHelper extends Object3D {
+  /**
+   * Visualize Rigid bodies
+   *
+   * @param {THREE.SkinnedMesh} mesh
+   * @param {Physics} physics
+   */
+  constructor(mesh, physics) {
+    super();
+    this.root = mesh;
+    this.physics = physics;
+    this.matrix.copy(mesh.matrixWorld);
+    this.matrixAutoUpdate = false;
+    this.materials = [];
+    this.materials.push(
+      new MeshBasicMaterial({
+        color: new Color(16746632),
+        wireframe: true,
+        depthTest: false,
+        depthWrite: false,
+        opacity: 0.25,
+        transparent: true
+      })
+    );
+    this.materials.push(
+      new MeshBasicMaterial({
+        color: new Color(8978312),
+        wireframe: true,
+        depthTest: false,
+        depthWrite: false,
+        opacity: 0.25,
+        transparent: true
+      })
+    );
+    this.materials.push(
+      new MeshBasicMaterial({
+        color: new Color(8947967),
+        wireframe: true,
+        depthTest: false,
+        depthWrite: false,
+        opacity: 0.25,
+        transparent: true
+      })
+    );
+    this._init();
+  }
+  /**
+   * Frees the GPU-related resources allocated by this instance. Call this method whenever this instance is no longer used in your app.
+   */
+  dispose() {
+    const materials = this.materials;
+    const children = this.children;
+    for (let i = 0; i < materials.length; i++) {
+      materials[i].dispose();
+    }
+    for (let i = 0; i < children.length; i++) {
+      const child = children[i];
+      if (child.isMesh)
+        child.geometry.dispose();
+    }
+  }
+  /**
+   * Updates Rigid Bodies visualization.
+   */
+  updateMatrixWorld(force) {
+    var mesh = this.root;
+    if (this.visible) {
+      var bodies = this.physics.bodies;
+      _matrixWorldInv.copy(mesh.matrixWorld).decompose(_position, _quaternion, _scale).compose(_position, _quaternion, _scale.set(1, 1, 1)).invert();
+      for (var i = 0, il = bodies.length; i < il; i++) {
+        var body = bodies[i].body;
+        var child = this.children[i];
+        var tr = body.getCenterOfMassTransform();
+        var origin = tr.getOrigin();
+        var rotation = tr.getRotation();
+        child.position.set(origin.x(), origin.y(), origin.z()).applyMatrix4(_matrixWorldInv);
+        child.quaternion.setFromRotationMatrix(_matrixWorldInv).multiply(_quaternion.set(rotation.x(), rotation.y(), rotation.z(), rotation.w()));
+      }
+    }
+    this.matrix.copy(mesh.matrixWorld).decompose(_position, _quaternion, _scale).compose(_position, _quaternion, _scale.set(1, 1, 1));
+    super.updateMatrixWorld(force);
+  }
+  // private method
+  _init() {
+    var bodies = this.physics.bodies;
+    function createGeometry(param2) {
+      switch (param2.shapeType) {
+        case 0:
+          return new SphereGeometry(param2.width, 16, 8);
+        case 1:
+          return new BoxGeometry(param2.width * 2, param2.height * 2, param2.depth * 2, 8, 8, 8);
+        case 2:
+          return new CapsuleGeometry(param2.width, param2.height, 8, 16);
+        default:
+          return null;
+      }
+    }
+    for (var i = 0, il = bodies.length; i < il; i++) {
+      var param = bodies[i].params;
+      this.add(new Mesh(createGeometry(param), this.materials[param.type]));
+    }
+  }
+}
+export {
+  MMDPhysics
+};
+//# sourceMappingURL=MMDPhysics.js.map