(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(["exports", "three"], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports, require("three"));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports, global.three);
    global.OculusHandPointerModel = mod.exports;
  }
})(typeof globalThis !== "undefined" ? globalThis : typeof self !== "undefined" ? self : this, function (_exports, THREE) {
  "use strict";

  Object.defineProperty(_exports, "__esModule", {
    value: true
  });
  _exports.OculusHandPointerModel = void 0;
  THREE = _interopRequireWildcard(THREE);

  function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }

  function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

  function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }

  function _get() { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(arguments.length < 3 ? target : receiver); } return desc.value; }; } return _get.apply(this, arguments); }

  function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }

  function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } Object.defineProperty(subClass, "prototype", { value: Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }), writable: false }); if (superClass) _setPrototypeOf(subClass, superClass); }

  function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

  function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

  function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }

  function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

  function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }

  function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

  var PINCH_MAX = 0.05;
  var PINCH_THRESHOLD = 0.02;
  var PINCH_MIN = 0.01;
  var POINTER_ADVANCE_MAX = 0.02;
  var POINTER_OPACITY_MAX = 1;
  var POINTER_OPACITY_MIN = 0.4;
  var POINTER_FRONT_RADIUS = 0.002;
  var POINTER_REAR_RADIUS = 0.01;
  var POINTER_REAR_RADIUS_MIN = 0.003;
  var POINTER_LENGTH = 0.035;
  var POINTER_SEGMENTS = 16;
  var POINTER_RINGS = 12;
  var POINTER_HEMISPHERE_ANGLE = 110;
  var YAXIS = new THREE.Vector3(0, 1, 0);
  var ZAXIS = new THREE.Vector3(0, 0, 1);
  var CURSOR_RADIUS = 0.02;
  var CURSOR_MAX_DISTANCE = 1.5;

  var OculusHandPointerModel = /*#__PURE__*/function (_THREE$Object3D) {
    _inherits(OculusHandPointerModel, _THREE$Object3D);

    var _super = _createSuper(OculusHandPointerModel);

    function OculusHandPointerModel(hand, controller) {
      var _this;

      _classCallCheck(this, OculusHandPointerModel);

      _this = _super.call(this);
      _this.hand = hand;
      _this.controller = controller;
      _this.motionController = null;
      _this.envMap = null;
      _this.mesh = null;
      _this.pointerGeometry = null;
      _this.pointerMesh = null;
      _this.pointerObject = null;
      _this.pinched = false;
      _this.attached = false;
      _this.cursorObject = null;
      _this.raycaster = null;
      hand.addEventListener('connected', function (event) {
        var xrInputSource = event.data;

        if (xrInputSource.hand) {
          _this.visible = true;
          _this.xrInputSource = xrInputSource;

          _this.createPointer();
        }
      });
      return _this;
    }

    _createClass(OculusHandPointerModel, [{
      key: "_drawVerticesRing",
      value: function _drawVerticesRing(vertices, baseVector, ringIndex) {
        var segmentVector = baseVector.clone();

        for (var i = 0; i < POINTER_SEGMENTS; i++) {
          segmentVector.applyAxisAngle(ZAXIS, Math.PI * 2 / POINTER_SEGMENTS);
          var vid = ringIndex * POINTER_SEGMENTS + i;
          vertices[3 * vid] = segmentVector.x;
          vertices[3 * vid + 1] = segmentVector.y;
          vertices[3 * vid + 2] = segmentVector.z;
        }
      }
    }, {
      key: "_updatePointerVertices",
      value: function _updatePointerVertices(rearRadius) {
        var vertices = this.pointerGeometry.attributes.position.array; // first ring for front face

        var frontFaceBase = new THREE.Vector3(POINTER_FRONT_RADIUS, 0, -1 * (POINTER_LENGTH - rearRadius));

        this._drawVerticesRing(vertices, frontFaceBase, 0); // rings for rear hemisphere


        var rearBase = new THREE.Vector3(Math.sin(Math.PI * POINTER_HEMISPHERE_ANGLE / 180) * rearRadius, Math.cos(Math.PI * POINTER_HEMISPHERE_ANGLE / 180) * rearRadius, 0);

        for (var i = 0; i < POINTER_RINGS; i++) {
          this._drawVerticesRing(vertices, rearBase, i + 1);

          rearBase.applyAxisAngle(YAXIS, Math.PI * POINTER_HEMISPHERE_ANGLE / 180 / (POINTER_RINGS * -2));
        } // front and rear face center vertices


        var frontCenterIndex = POINTER_SEGMENTS * (1 + POINTER_RINGS);
        var rearCenterIndex = POINTER_SEGMENTS * (1 + POINTER_RINGS) + 1;
        var frontCenter = new THREE.Vector3(0, 0, -1 * (POINTER_LENGTH - rearRadius));
        vertices[frontCenterIndex * 3] = frontCenter.x;
        vertices[frontCenterIndex * 3 + 1] = frontCenter.y;
        vertices[frontCenterIndex * 3 + 2] = frontCenter.z;
        var rearCenter = new THREE.Vector3(0, 0, rearRadius);
        vertices[rearCenterIndex * 3] = rearCenter.x;
        vertices[rearCenterIndex * 3 + 1] = rearCenter.y;
        vertices[rearCenterIndex * 3 + 2] = rearCenter.z;
        this.pointerGeometry.setAttribute('position', new THREE.Float32BufferAttribute(vertices, 3)); // verticesNeedUpdate = true;
      }
    }, {
      key: "createPointer",
      value: function createPointer() {
        var i, j;
        var vertices = new Array(((POINTER_RINGS + 1) * POINTER_SEGMENTS + 2) * 3).fill(0); // const vertices = [];

        var indices = [];
        this.pointerGeometry = new THREE.BufferGeometry();
        this.pointerGeometry.setAttribute('position', new THREE.Float32BufferAttribute(vertices, 3));

        this._updatePointerVertices(POINTER_REAR_RADIUS); // construct faces to connect rings


        for (i = 0; i < POINTER_RINGS; i++) {
          for (j = 0; j < POINTER_SEGMENTS - 1; j++) {
            indices.push(i * POINTER_SEGMENTS + j, i * POINTER_SEGMENTS + j + 1, (i + 1) * POINTER_SEGMENTS + j);
            indices.push(i * POINTER_SEGMENTS + j + 1, (i + 1) * POINTER_SEGMENTS + j + 1, (i + 1) * POINTER_SEGMENTS + j);
          }

          indices.push((i + 1) * POINTER_SEGMENTS - 1, i * POINTER_SEGMENTS, (i + 2) * POINTER_SEGMENTS - 1);
          indices.push(i * POINTER_SEGMENTS, (i + 1) * POINTER_SEGMENTS, (i + 2) * POINTER_SEGMENTS - 1);
        } // construct front and rear face


        var frontCenterIndex = POINTER_SEGMENTS * (1 + POINTER_RINGS);
        var rearCenterIndex = POINTER_SEGMENTS * (1 + POINTER_RINGS) + 1;

        for (i = 0; i < POINTER_SEGMENTS - 1; i++) {
          indices.push(frontCenterIndex, i + 1, i);
          indices.push(rearCenterIndex, i + POINTER_SEGMENTS * POINTER_RINGS, i + POINTER_SEGMENTS * POINTER_RINGS + 1);
        }

        indices.push(frontCenterIndex, 0, POINTER_SEGMENTS - 1);
        indices.push(rearCenterIndex, POINTER_SEGMENTS * (POINTER_RINGS + 1) - 1, POINTER_SEGMENTS * POINTER_RINGS);
        var material = new THREE.MeshBasicMaterial();
        material.transparent = true;
        material.opacity = POINTER_OPACITY_MIN;
        this.pointerGeometry.setIndex(indices);
        this.pointerMesh = new THREE.Mesh(this.pointerGeometry, material);
        this.pointerMesh.position.set(0, 0, -1 * POINTER_REAR_RADIUS);
        this.pointerObject = new THREE.Object3D();
        this.pointerObject.add(this.pointerMesh);
        this.raycaster = new THREE.Raycaster(); // create cursor

        var cursorGeometry = new THREE.SphereGeometry(CURSOR_RADIUS, 10, 10);
        var cursorMaterial = new THREE.MeshBasicMaterial();
        cursorMaterial.transparent = true;
        cursorMaterial.opacity = POINTER_OPACITY_MIN;
        this.cursorObject = new THREE.Mesh(cursorGeometry, cursorMaterial);
        this.pointerObject.add(this.cursorObject);
        this.add(this.pointerObject);
      }
    }, {
      key: "_updateRaycaster",
      value: function _updateRaycaster() {
        if (this.raycaster) {
          var pointerMatrix = this.pointerObject.matrixWorld;
          var tempMatrix = new THREE.Matrix4();
          tempMatrix.identity().extractRotation(pointerMatrix);
          this.raycaster.ray.origin.setFromMatrixPosition(pointerMatrix);
          this.raycaster.ray.direction.set(0, 0, -1).applyMatrix4(tempMatrix);
        }
      }
    }, {
      key: "_updatePointer",
      value: function _updatePointer() {
        this.pointerObject.visible = this.controller.visible;
        var indexTip = this.hand.joints['index-finger-tip'];
        var thumbTip = this.hand.joints['thumb-tip'];
        var distance = indexTip.position.distanceTo(thumbTip.position);
        var position = indexTip.position.clone().add(thumbTip.position).multiplyScalar(0.5);
        this.pointerObject.position.copy(position);
        this.pointerObject.quaternion.copy(this.controller.quaternion);
        this.pinched = distance <= PINCH_THRESHOLD;
        var pinchScale = (distance - PINCH_MIN) / (PINCH_MAX - PINCH_MIN);
        var focusScale = (distance - PINCH_MIN) / (PINCH_THRESHOLD - PINCH_MIN);

        if (pinchScale > 1) {
          this._updatePointerVertices(POINTER_REAR_RADIUS);

          this.pointerMesh.position.set(0, 0, -1 * POINTER_REAR_RADIUS);
          this.pointerMesh.material.opacity = POINTER_OPACITY_MIN;
        } else if (pinchScale > 0) {
          var rearRadius = (POINTER_REAR_RADIUS - POINTER_REAR_RADIUS_MIN) * pinchScale + POINTER_REAR_RADIUS_MIN;

          this._updatePointerVertices(rearRadius);

          if (focusScale < 1) {
            this.pointerMesh.position.set(0, 0, -1 * rearRadius - (1 - focusScale) * POINTER_ADVANCE_MAX);
            this.pointerMesh.material.opacity = POINTER_OPACITY_MIN + (1 - focusScale) * (POINTER_OPACITY_MAX - POINTER_OPACITY_MIN);
          } else {
            this.pointerMesh.position.set(0, 0, -1 * rearRadius);
            this.pointerMesh.material.opacity = POINTER_OPACITY_MIN;
          }
        } else {
          this._updatePointerVertices(POINTER_REAR_RADIUS_MIN);

          this.pointerMesh.position.set(0, 0, -1 * POINTER_REAR_RADIUS_MIN - POINTER_ADVANCE_MAX);
          this.pointerMesh.material.opacity = POINTER_OPACITY_MAX;
        }

        this.cursorObject.material.opacity = this.pointerMesh.material.opacity;
      }
    }, {
      key: "updateMatrixWorld",
      value: function updateMatrixWorld(force) {
        _get(_getPrototypeOf(OculusHandPointerModel.prototype), "updateMatrixWorld", this).call(this, force);

        if (this.pointerGeometry) {
          this._updatePointer();

          this._updateRaycaster();
        }
      }
    }, {
      key: "isPinched",
      value: function isPinched() {
        return this.pinched;
      }
    }, {
      key: "setAttached",
      value: function setAttached(attached) {
        this.attached = attached;
      }
    }, {
      key: "isAttached",
      value: function isAttached() {
        return this.attached;
      }
    }, {
      key: "intersectObject",
      value: function intersectObject(object) {
        var recursive = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;

        if (this.raycaster) {
          return this.raycaster.intersectObject(object, recursive);
        }
      }
    }, {
      key: "intersectObjects",
      value: function intersectObjects(objects) {
        var recursive = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;

        if (this.raycaster) {
          return this.raycaster.intersectObjects(objects, recursive);
        }
      }
    }, {
      key: "checkIntersections",
      value: function checkIntersections(objects) {
        var recursive = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;

        if (this.raycaster && !this.attached) {
          var intersections = this.raycaster.intersectObjects(objects, recursive);
          var direction = new THREE.Vector3(0, 0, -1);

          if (intersections.length > 0) {
            var intersection = intersections[0];
            var distance = intersection.distance;
            this.cursorObject.position.copy(direction.multiplyScalar(distance));
          } else {
            this.cursorObject.position.copy(direction.multiplyScalar(CURSOR_MAX_DISTANCE));
          }
        }
      }
    }, {
      key: "setCursor",
      value: function setCursor(distance) {
        var direction = new THREE.Vector3(0, 0, -1);

        if (this.raycaster && !this.attached) {
          this.cursorObject.position.copy(direction.multiplyScalar(distance));
        }
      }
    }]);

    return OculusHandPointerModel;
  }(THREE.Object3D);

  _exports.OculusHandPointerModel = OculusHandPointerModel;
});