{"version":3,"file":"OculusHandPointerModel.cjs","sources":["../../src/webxr/OculusHandPointerModel.js"],"sourcesContent":["import * as THREE from 'three'\n\nconst PINCH_MAX = 0.05\nconst PINCH_THRESHOLD = 0.02\nconst PINCH_MIN = 0.01\nconst POINTER_ADVANCE_MAX = 0.02\nconst POINTER_OPACITY_MAX = 1\nconst POINTER_OPACITY_MIN = 0.4\nconst POINTER_FRONT_RADIUS = 0.002\nconst POINTER_REAR_RADIUS = 0.01\nconst POINTER_REAR_RADIUS_MIN = 0.003\nconst POINTER_LENGTH = 0.035\nconst POINTER_SEGMENTS = 16\nconst POINTER_RINGS = 12\nconst POINTER_HEMISPHERE_ANGLE = 110\nconst YAXIS = /* @__PURE__ */ new THREE.Vector3(0, 1, 0)\nconst ZAXIS = /* @__PURE__ */ new THREE.Vector3(0, 0, 1)\n\nconst CURSOR_RADIUS = 0.02\nconst CURSOR_MAX_DISTANCE = 1.5\n\nclass OculusHandPointerModel extends THREE.Object3D {\n  constructor(hand, controller) {\n    super()\n\n    this.hand = hand\n    this.controller = controller\n\n    // Unused\n    this.motionController = null\n    this.envMap = null\n    this.mesh = null\n\n    this.pointerGeometry = null\n    this.pointerMesh = null\n    this.pointerObject = null\n\n    this.pinched = false\n    this.attached = false\n\n    this.cursorObject = null\n\n    this.raycaster = null\n\n    this._onConnected = this._onConnected.bind(this)\n    this._onDisconnected = this._onDisconnected.bind(this)\n    this.hand.addEventListener('connected', this._onConnected)\n    this.hand.addEventListener('disconnected', this._onDisconnected)\n  }\n\n  _onConnected(event) {\n    const xrInputSource = event.data\n    if (xrInputSource.hand) {\n      this.visible = true\n      this.xrInputSource = xrInputSource\n\n      this.createPointer()\n    }\n  }\n\n  _onDisconnected() {\n    this.visible = false\n    this.xrInputSource = null\n\n    this.pointerGeometry?.dispose()\n    this.pointerMesh?.material.dispose()\n\n    this.clear()\n  }\n\n  _drawVerticesRing(vertices, baseVector, ringIndex) {\n    const segmentVector = baseVector.clone()\n    for (var i = 0; i < POINTER_SEGMENTS; i++) {\n      segmentVector.applyAxisAngle(ZAXIS, (Math.PI * 2) / POINTER_SEGMENTS)\n      const vid = ringIndex * POINTER_SEGMENTS + i\n      vertices[3 * vid] = segmentVector.x\n      vertices[3 * vid + 1] = segmentVector.y\n      vertices[3 * vid + 2] = segmentVector.z\n    }\n  }\n\n  _updatePointerVertices(rearRadius) {\n    const vertices = this.pointerGeometry.attributes.position.array\n    // first ring for front face\n    const frontFaceBase = new THREE.Vector3(POINTER_FRONT_RADIUS, 0, -1 * (POINTER_LENGTH - rearRadius))\n    this._drawVerticesRing(vertices, frontFaceBase, 0)\n\n    // rings for rear hemisphere\n    const rearBase = new THREE.Vector3(\n      Math.sin((Math.PI * POINTER_HEMISPHERE_ANGLE) / 180) * rearRadius,\n      Math.cos((Math.PI * POINTER_HEMISPHERE_ANGLE) / 180) * rearRadius,\n      0,\n    )\n    for (var i = 0; i < POINTER_RINGS; i++) {\n      this._drawVerticesRing(vertices, rearBase, i + 1)\n      rearBase.applyAxisAngle(YAXIS, (Math.PI * POINTER_HEMISPHERE_ANGLE) / 180 / (POINTER_RINGS * -2))\n    }\n\n    // front and rear face center vertices\n    const frontCenterIndex = POINTER_SEGMENTS * (1 + POINTER_RINGS)\n    const rearCenterIndex = POINTER_SEGMENTS * (1 + POINTER_RINGS) + 1\n    const frontCenter = new THREE.Vector3(0, 0, -1 * (POINTER_LENGTH - rearRadius))\n    vertices[frontCenterIndex * 3] = frontCenter.x\n    vertices[frontCenterIndex * 3 + 1] = frontCenter.y\n    vertices[frontCenterIndex * 3 + 2] = frontCenter.z\n    const rearCenter = new THREE.Vector3(0, 0, rearRadius)\n    vertices[rearCenterIndex * 3] = rearCenter.x\n    vertices[rearCenterIndex * 3 + 1] = rearCenter.y\n    vertices[rearCenterIndex * 3 + 2] = rearCenter.z\n\n    this.pointerGeometry.setAttribute('position', new THREE.Float32BufferAttribute(vertices, 3))\n    // verticesNeedUpdate = true;\n  }\n\n  createPointer() {\n    var i, j\n    const vertices = new Array(((POINTER_RINGS + 1) * POINTER_SEGMENTS + 2) * 3).fill(0)\n    // const vertices = [];\n    const indices = []\n    this.pointerGeometry = new THREE.BufferGeometry()\n\n    this.pointerGeometry.setAttribute('position', new THREE.Float32BufferAttribute(vertices, 3))\n\n    this._updatePointerVertices(POINTER_REAR_RADIUS)\n\n    // construct faces to connect rings\n    for (i = 0; i < POINTER_RINGS; i++) {\n      for (j = 0; j < POINTER_SEGMENTS - 1; j++) {\n        indices.push(i * POINTER_SEGMENTS + j, i * POINTER_SEGMENTS + j + 1, (i + 1) * POINTER_SEGMENTS + j)\n        indices.push(i * POINTER_SEGMENTS + j + 1, (i + 1) * POINTER_SEGMENTS + j + 1, (i + 1) * POINTER_SEGMENTS + j)\n      }\n\n      indices.push((i + 1) * POINTER_SEGMENTS - 1, i * POINTER_SEGMENTS, (i + 2) * POINTER_SEGMENTS - 1)\n      indices.push(i * POINTER_SEGMENTS, (i + 1) * POINTER_SEGMENTS, (i + 2) * POINTER_SEGMENTS - 1)\n    }\n\n    // construct front and rear face\n    const frontCenterIndex = POINTER_SEGMENTS * (1 + POINTER_RINGS)\n    const rearCenterIndex = POINTER_SEGMENTS * (1 + POINTER_RINGS) + 1\n\n    for (i = 0; i < POINTER_SEGMENTS - 1; i++) {\n      indices.push(frontCenterIndex, i + 1, i)\n      indices.push(rearCenterIndex, i + POINTER_SEGMENTS * POINTER_RINGS, i + POINTER_SEGMENTS * POINTER_RINGS + 1)\n    }\n\n    indices.push(frontCenterIndex, 0, POINTER_SEGMENTS - 1)\n    indices.push(rearCenterIndex, POINTER_SEGMENTS * (POINTER_RINGS + 1) - 1, POINTER_SEGMENTS * POINTER_RINGS)\n\n    const material = new THREE.MeshBasicMaterial()\n    material.transparent = true\n    material.opacity = POINTER_OPACITY_MIN\n\n    this.pointerGeometry.setIndex(indices)\n\n    this.pointerMesh = new THREE.Mesh(this.pointerGeometry, material)\n\n    this.pointerMesh.position.set(0, 0, -1 * POINTER_REAR_RADIUS)\n    this.pointerObject = new THREE.Object3D()\n    this.pointerObject.add(this.pointerMesh)\n\n    this.raycaster = new THREE.Raycaster()\n\n    // create cursor\n    const cursorGeometry = new THREE.SphereGeometry(CURSOR_RADIUS, 10, 10)\n    const cursorMaterial = new THREE.MeshBasicMaterial()\n    cursorMaterial.transparent = true\n    cursorMaterial.opacity = POINTER_OPACITY_MIN\n\n    this.cursorObject = new THREE.Mesh(cursorGeometry, cursorMaterial)\n    this.pointerObject.add(this.cursorObject)\n\n    this.add(this.pointerObject)\n  }\n\n  _updateRaycaster() {\n    if (this.raycaster) {\n      const pointerMatrix = this.pointerObject.matrixWorld\n      const tempMatrix = new THREE.Matrix4()\n      tempMatrix.identity().extractRotation(pointerMatrix)\n      this.raycaster.ray.origin.setFromMatrixPosition(pointerMatrix)\n      this.raycaster.ray.direction.set(0, 0, -1).applyMatrix4(tempMatrix)\n    }\n  }\n\n  _updatePointer() {\n    this.pointerObject.visible = this.controller.visible\n    const indexTip = this.hand.joints['index-finger-tip']\n    const thumbTip = this.hand.joints['thumb-tip']\n    const distance = indexTip.position.distanceTo(thumbTip.position)\n    const position = indexTip.position.clone().add(thumbTip.position).multiplyScalar(0.5)\n    this.pointerObject.position.copy(position)\n    this.pointerObject.quaternion.copy(this.controller.quaternion)\n\n    this.pinched = distance <= PINCH_THRESHOLD\n\n    const pinchScale = (distance - PINCH_MIN) / (PINCH_MAX - PINCH_MIN)\n    const focusScale = (distance - PINCH_MIN) / (PINCH_THRESHOLD - PINCH_MIN)\n    if (pinchScale > 1) {\n      this._updatePointerVertices(POINTER_REAR_RADIUS)\n      this.pointerMesh.position.set(0, 0, -1 * POINTER_REAR_RADIUS)\n      this.pointerMesh.material.opacity = POINTER_OPACITY_MIN\n    } else if (pinchScale > 0) {\n      const rearRadius = (POINTER_REAR_RADIUS - POINTER_REAR_RADIUS_MIN) * pinchScale + POINTER_REAR_RADIUS_MIN\n      this._updatePointerVertices(rearRadius)\n      if (focusScale < 1) {\n        this.pointerMesh.position.set(0, 0, -1 * rearRadius - (1 - focusScale) * POINTER_ADVANCE_MAX)\n        this.pointerMesh.material.opacity =\n          POINTER_OPACITY_MIN + (1 - focusScale) * (POINTER_OPACITY_MAX - POINTER_OPACITY_MIN)\n      } else {\n        this.pointerMesh.position.set(0, 0, -1 * rearRadius)\n        this.pointerMesh.material.opacity = POINTER_OPACITY_MIN\n      }\n    } else {\n      this._updatePointerVertices(POINTER_REAR_RADIUS_MIN)\n      this.pointerMesh.position.set(0, 0, -1 * POINTER_REAR_RADIUS_MIN - POINTER_ADVANCE_MAX)\n      this.pointerMesh.material.opacity = POINTER_OPACITY_MAX\n    }\n\n    this.cursorObject.material.opacity = this.pointerMesh.material.opacity\n  }\n\n  updateMatrixWorld(force) {\n    super.updateMatrixWorld(force)\n    if (this.pointerGeometry) {\n      this._updatePointer()\n      this._updateRaycaster()\n    }\n  }\n\n  isPinched() {\n    return this.pinched\n  }\n\n  setAttached(attached) {\n    this.attached = attached\n  }\n\n  isAttached() {\n    return this.attached\n  }\n\n  intersectObject(object, recursive = true) {\n    if (this.raycaster) {\n      return this.raycaster.intersectObject(object, recursive)\n    }\n  }\n\n  intersectObjects(objects, recursive = true) {\n    if (this.raycaster) {\n      return this.raycaster.intersectObjects(objects, recursive)\n    }\n  }\n\n  checkIntersections(objects, recursive = false) {\n    if (this.raycaster && !this.attached) {\n      const intersections = this.raycaster.intersectObjects(objects, recursive)\n      const direction = new THREE.Vector3(0, 0, -1)\n      if (intersections.length > 0) {\n        const intersection = intersections[0]\n        const distance = intersection.distance\n        this.cursorObject.position.copy(direction.multiplyScalar(distance))\n      } else {\n        this.cursorObject.position.copy(direction.multiplyScalar(CURSOR_MAX_DISTANCE))\n      }\n    }\n  }\n\n  setCursor(distance) {\n    const direction = new THREE.Vector3(0, 0, -1)\n    if (this.raycaster && !this.attached) {\n      this.cursorObject.position.copy(direction.multiplyScalar(distance))\n    }\n  }\n\n  dispose() {\n    this._onDisconnected()\n    this.hand.removeEventListener('connected', this._onConnected)\n    this.hand.removeEventListener('disconnected', this._onDisconnected)\n  }\n}\n\nexport { OculusHandPointerModel 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