React_Client_App_Access/node_modules/.cache/babel-loader/1056aae552da0296d9078d4c97c964cf.json

{"ast":null,"code":"import { __assign } from \"tslib\";\nimport { getPosition } from './get-position';\n\nvar Tracker =\n/** @class */\nfunction () {\n  function Tracker(touch) {\n    this.updateTime = Date.now();\n    this.delta = {\n      x: 0,\n      y: 0\n    };\n    this.velocity = {\n      x: 0,\n      y: 0\n    };\n    this.lastPosition = {\n      x: 0,\n      y: 0\n    };\n    this.lastPosition = getPosition(touch);\n  }\n\n  Tracker.prototype.update = function (touch) {\n    var _a = this,\n        velocity = _a.velocity,\n        updateTime = _a.updateTime,\n        lastPosition = _a.lastPosition;\n\n    var now = Date.now();\n    var position = getPosition(touch);\n    var delta = {\n      x: -(position.x - lastPosition.x),\n      y: -(position.y - lastPosition.y)\n    };\n    var duration = now - updateTime || 16;\n    var vx = delta.x / duration * 16;\n    var vy = delta.y / duration * 16;\n    velocity.x = vx * 0.9 + velocity.x * 0.1;\n    velocity.y = vy * 0.9 + velocity.y * 0.1;\n    this.delta = delta;\n    this.updateTime = now;\n    this.lastPosition = position;\n  };\n\n  return Tracker;\n}();\n\nexport { Tracker };\n\nvar TouchRecord =\n/** @class */\nfunction () {\n  function TouchRecord() {\n    this._touchList = {};\n  }\n\n  Object.defineProperty(TouchRecord.prototype, \"_primitiveValue\", {\n    get: function get() {\n      return {\n        x: 0,\n        y: 0\n      };\n    },\n    enumerable: true,\n    configurable: true\n  });\n\n  TouchRecord.prototype.isActive = function () {\n    return this._activeTouchID !== undefined;\n  };\n\n  TouchRecord.prototype.getDelta = function () {\n    var tracker = this._getActiveTracker();\n\n    if (!tracker) {\n      return this._primitiveValue;\n    }\n\n    return __assign({}, tracker.delta);\n  };\n\n  TouchRecord.prototype.getVelocity = function () {\n    var tracker = this._getActiveTracker();\n\n    if (!tracker) {\n      return this._primitiveValue;\n    }\n\n    return __assign({}, tracker.velocity);\n  };\n\n  TouchRecord.prototype.track = function (evt) {\n    var _this = this;\n\n    var targetTouches = evt.targetTouches;\n    Array.from(targetTouches).forEach(function (touch) {\n      _this._add(touch);\n    });\n    return this._touchList;\n  };\n\n  TouchRecord.prototype.update = function (evt) {\n    var _this = this;\n\n    var touches = evt.touches,\n        changedTouches = evt.changedTouches;\n    Array.from(touches).forEach(function (touch) {\n      _this._renew(touch);\n    });\n\n    this._setActiveID(changedTouches);\n\n    return this._touchList;\n  };\n\n  TouchRecord.prototype.release = function (evt) {\n    var _this = this;\n\n    delete this._activeTouchID;\n    Array.from(evt.changedTouches).forEach(function (touch) {\n      _this._delete(touch);\n    });\n  };\n\n  TouchRecord.prototype._add = function (touch) {\n    if (this._has(touch)) {\n      return;\n    }\n\n    var tracker = new Tracker(touch);\n    this._touchList[touch.identifier] = tracker;\n  };\n\n  TouchRecord.prototype._renew = function (touch) {\n    if (!this._has(touch)) {\n      return;\n    }\n\n    var tracker = this._touchList[touch.identifier];\n    tracker.update(touch);\n  };\n\n  TouchRecord.prototype._delete = function (touch) {\n    delete this._touchList[touch.identifier];\n  };\n\n  TouchRecord.prototype._has = function (touch) {\n    return this._touchList.hasOwnProperty(touch.identifier);\n  };\n\n  TouchRecord.prototype._setActiveID = function (touches) {\n    this._activeTouchID = touches[touches.length - 1].identifier;\n  };\n\n  TouchRecord.prototype._getActiveTracker = function () {\n    var _a = this,\n        _touchList = _a._touchList,\n        _activeTouchID = _a._activeTouchID;\n\n    return _touchList[_activeTouchID];\n  };\n\n  return TouchRecord;\n}();\n\nexport { TouchRecord };","map":null,"metadata":{},"sourceType":"module"}