/* Built for whs v2.1.9 */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('three')) :
  typeof define === 'function' && define.amd ? define(['three'], factory) :
  (global.DragModule = factory(global.THREE));
}(this, (function (three) { 'use strict';

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

  var createClass = 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);
      }
    }

    return function (Constructor, protoProps, staticProps) {
      if (protoProps) defineProperties(Constructor.prototype, protoProps);
      if (staticProps) defineProperties(Constructor, staticProps);
      return Constructor;
    };
  }();

  var MeshDragModule = function () {
    function MeshDragModule(mouse) {
      classCallCheck(this, MeshDragModule);

      this.mouse = mouse;
      this.offset = new three.Vector3();
    }

    createClass(MeshDragModule, [{
      key: 'postIntegrate',
      value: function postIntegrate(self) {
        var _this = this;

        this.defer(function () {
          var mouse = self.mouse,
              offset = self.offset;

          mouse.track(_this);

          offset.copy(_this.position);

          var dragPossible = false;

          _this.on('mousedown', function () {
            dragPossible = true;
            offset.copy(_this.position.clone().sub(mouse.project()));
          });

          mouse.on('mouseup', function () {
            dragPossible = false;
          });

          mouse.on('move', function () {
            if (dragPossible) _this.position.copy(mouse.project().add(offset));
          });
        });
      }
    }]);
    return MeshDragModule;
  }();

  var DragModule = function () {
    function DragModule() {
      classCallCheck(this, DragModule);

      this.mouse = null;
    }

    createClass(DragModule, [{
      key: 'manager',
      value: function manager(_manager) {
        _manager.define('drag');
        this.mouse = _manager.use('mouse');
      }
    }, {
      key: 'mesh',
      value: function mesh() {
        return new MeshDragModule(this.mouse);
      }
    }]);
    return DragModule;
  }();

  return DragModule;

})));
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