whole_func_string: function DragControls(_objects, _camera, _domElement) {
  
    if (_objects.isCamera) {
  
      console.warn('THREE.DragControls: Constructor now expects ( objects, camera, domElement )');
      var temp = _objects;
      _objects = _camera;
      _camera = temp;
  
    }
  
    var _plane = new Plane();
    var _raycaster = new Raycaster();
  
    var _mouse = new Vector2();
    var _offset = new Vector3();
    var _intersection = new Vector3();
  
    var _selected = null,
      _hovered = null;
  
    //
  
    var scope = this;
  
    function activate() {
  
      _domElement.addEventListener('mousemove', onDocumentMouseMove, false);
      _domElement.addEventListener('mousedown', onDocumentMouseDown, false);
      _domElement.addEventListener('mouseup', onDocumentMouseCancel, false);
      _domElement.addEventListener('mouseleave', onDocumentMouseCancel, false);
      _domElement.addEventListener('touchmove', onDocumentTouchMove, false);
      _domElement.addEventListener('touchstart', onDocumentTouchStart, false);
      _domElement.addEventListener('touchend', onDocumentTouchEnd, false);
  
    }
  
    function deactivate() {
  
      _domElement.removeEventListener('mousemove', onDocumentMouseMove, false);
      _domElement.removeEventListener('mousedown', onDocumentMouseDown, false);
      _domElement.removeEventListener('mouseup', onDocumentMouseCancel, false);
      _domElement.removeEventListener('mouseleave', onDocumentMouseCancel, false);
      _domElement.removeEventListener('touchmove', onDocumentTouchMove, false);
      _domElement.removeEventListener('touchstart', onDocumentTouchStart, false);
      _domElement.removeEventListener('touchend', onDocumentTouchEnd, false);
  
    }
  
    function dispose() {
  
      deactivate();
  
    }
  
    function onDocumentMouseMove(event) {
  
      event.preventDefault();
  
      var rect = _domElement.getBoundingClientRect();
  
      _mouse.x = ((event.clientX - rect.left) / rect.width) * 2 - 1;
      _mouse.y = -((event.clientY - rect.top) / rect.height) * 2 + 1;
  
      _raycaster.setFromCamera(_mouse, _camera);
  
      if (_selected && scope.enabled) {
  
        if (_raycaster.ray.intersectPlane(_plane, _intersection)) {
  
          _selected.position.copy(_intersection.sub(_offset));
  
        }
  
        scope.dispatchEvent({
          type: 'drag',
          object: _selected
        });
  
        return;
  
      }
  
      _raycaster.setFromCamera(_mouse, _camera);
  
      var intersects = _raycaster.intersectObjects(_objects);
  
      if (intersects.length > 0) {
  
        var object = intersects[0].object;
  
        _plane.setFromNormalAndCoplanarPoint(_camera.getWorldDirection(_plane.normal), object.position);
  
        if (_hovered !== object) {
  
          scope.dispatchEvent({
            type: 'hoveron',
            object: object
          });
  
          _domElement.style.cursor = 'pointer';
          _hovered = object;
  
        }
  
      } else {
  
        if (_hovered !== null) {
  
          scope.dispatchEvent({
            type: 'hoveroff',
            object: _hovered
          });
  
          _domElement.style.cursor = 'auto';
          _hovered = null;
  
        }
  
      }
  
    }
  
    function onDocumentMouseDown(event) {
  
      event.preventDefault();
  
      _raycaster.setFromCamera(_mouse, _camera);
  
      var intersects = _raycaster.intersectObjects(_objects);
  
      if (intersects.length > 0) {
  
        _selected = intersects[0].object;
  
        if (_raycaster.ray.intersectPlane(_plane, _intersection)) {
  
          _offset.copy(_intersection).sub(_selected.position);
  
        }
  
        _domElement.style.cursor = 'move';
  
        scope.dispatchEvent({
          type: 'dragstart',
          object: _selected
        });
  
      }
  
  
    }
  
    function onDocumentMouseCancel(event) {
  
      event.preventDefault();
  
      if (_selected) {
  
        scope.dispatchEvent({
          type: 'dragend',
          object: _selected
        });
  
        _selected = null;
  
      }
  
      _domElement.style.cursor = 'auto';
  
    }
  
    function onDocumentTouchMove(event) {
  
      event.preventDefault();
      event = event.changedTouches[0];
  
      var rect = _domElement.getBoundingClientRect();
  
      _mouse.x = ((event.clientX - rect.left) / rect.width) * 2 - 1;
      _mouse.y = -((event.clientY - rect.top) / rect.height) * 2 + 1;
  
      _raycaster.setFromCamera(_mouse, _camera);
  
      if (_selected && scope.enabled) {
  
        if (_raycaster.ray.intersectPlane(_plane, _intersection)) {
  
          _selected.position.copy(_intersection.sub(_offset));
  
        }
  
        scope.dispatchEvent({
          type: 'drag',
          object: _selected
        });
  
        return;
  
      }
  
    }
  
    function onDocumentTouchStart(event) {
  
      event.preventDefault();
      event = event.changedTouches[0];
  
      var rect = _domElement.getBoundingClientRect();
  
      _mouse.x = ((event.clientX - rect.left) / rect.width) * 2 - 1;
      _mouse.y = -((event.clientY - rect.top) / rect.height) * 2 + 1;
  
      _raycaster.setFromCamera(_mouse, _camera);
  
      var intersects = _raycaster.intersectObjects(_objects);
  
      if (intersects.length > 0) {
  
        _selected = intersects[0].object;
  
        _plane.setFromNormalAndCoplanarPoint(_camera.getWorldDirection(_plane.normal), _selected.position);
  
        if (_raycaster.ray.intersectPlane(_plane, _intersection)) {
  
          _offset.copy(_intersection).sub(_selected.position);
  
        }
  
        _domElement.style.cursor = 'move';
  
        scope.dispatchEvent({
          type: 'dragstart',
          object: _selected
        });
  
      }
  
  
    }
  
    function onDocumentTouchEnd(event) {
  
      event.preventDefault();
  
      if (_selected) {
  
        scope.dispatchEvent({
          type: 'dragend',
          object: _selected
        });
  
        _selected = null;
  
      }
  
      _domElement.style.cursor = 'auto';
  
    }
  
    activate();
  
    // API
  
    this.enabled = true;
  
    this.activate = activate;
    this.deactivate = deactivate;
    this.dispose = dispose;
  
    // Backward compatibility
  
    this.setObjects = function() {
  
      console.error('THREE.DragControls: setObjects() has been removed.');
  
    };
  
    this.on = function(type, listener) {
  
      console.warn('THREE.DragControls: on() has been deprecated. Use addEventListener() instead.');
      scope.addEventListener(type, listener);
  
    };
  
    this.off = function(type, listener) {
  
      console.warn('THREE.DragControls: off() has been deprecated. Use removeEventListener() instead.');
      scope.removeEventListener(type, listener);
  
    };
  
    this.notify = function(type) {
  
      console.error('THREE.DragControls: notify() has been deprecated. Use dispatchEvent() instead.');
      scope.dispatchEvent({
        type: type
      });
  
    };
  
  }
func_code_string: function DragControls(_objects, _camera, _domElement) {
  
    if (_objects.isCamera) {
  
      console.warn('THREE.DragControls: Constructor now expects ( objects, camera, domElement )');
      var temp = _objects;
      _objects = _camera;
      _camera = temp;
  
    }
  
    var _plane = new Plane();
    var _raycaster = new Raycaster();
  
    var _mouse = new Vector2();
    var _offset = new Vector3();
    var _intersection = new Vector3();
  
    var _selected = null,
      _hovered = null;
  
    //
  
    var scope = this;
  
    function activate() {
  
      _domElement.addEventListener('mousemove', onDocumentMouseMove, false);
      _domElement.addEventListener('mousedown', onDocumentMouseDown, false);
      _domElement.addEventListener('mouseup', onDocumentMouseCancel, false);
      _domElement.addEventListener('mouseleave', onDocumentMouseCancel, false);
      _domElement.addEventListener('touchmove', onDocumentTouchMove, false);
      _domElement.addEventListener('touchstart', onDocumentTouchStart, false);
      _domElement.addEventListener('touchend', onDocumentTouchEnd, false);
  
    }
  
    function deactivate() {
  
      _domElement.removeEventListener('mousemove', onDocumentMouseMove, false);
      _domElement.removeEventListener('mousedown', onDocumentMouseDown, false);
      _domElement.removeEventListener('mouseup', onDocumentMouseCancel, false);
      _domElement.removeEventListener('mouseleave', onDocumentMouseCancel, false);
      _domElement.removeEventListener('touchmove', onDocumentTouchMove, false);
      _domElement.removeEventListener('touchstart', onDocumentTouchStart, false);
      _domElement.removeEventListener('touchend', onDocumentTouchEnd, false);
  
    }
  
    function dispose() {
  
      deactivate();
  
    }
  
    function onDocumentMouseMove(event) {
  
      event.preventDefault();
  
      var rect = _domElement.getBoundingClientRect();
  
      _mouse.x = ((event.clientX - rect.left) / rect.width) * 2 - 1;
      _mouse.y = -((event.clientY - rect.top) / rect.height) * 2 + 1;
  
      _raycaster.setFromCamera(_mouse, _camera);
  
      if (_selected && scope.enabled) {
  
        if (_raycaster.ray.intersectPlane(_plane, _intersection)) {
  
          _selected.position.copy(_intersection.sub(_offset));
  
        }
  
        scope.dispatchEvent({
          type: 'drag',
          object: _selected
        });
  
        return;
  
      }
  
      _raycaster.setFromCamera(_mouse, _camera);
  
      var intersects = _raycaster.intersectObjects(_objects);
  
      if (intersects.length > 0) {
  
        var object = intersects[0].object;
  
        _plane.setFromNormalAndCoplanarPoint(_camera.getWorldDirection(_plane.normal), object.position);
  
        if (_hovered !== object) {
  
          scope.dispatchEvent({
            type: 'hoveron',
            object: object
          });
  
          _domElement.style.cursor = 'pointer';
          _hovered = object;
  
        }
  
      } else {
  
        if (_hovered !== null) {
  
          scope.dispatchEvent({
            type: 'hoveroff',
            object: _hovered
          });
  
          _domElement.style.cursor = 'auto';
          _hovered = null;
  
        }
  
      }
  
    }
  
    function onDocumentMouseDown(event) {
  
      event.preventDefault();
  
      _raycaster.setFromCamera(_mouse, _camera);
  
      var intersects = _raycaster.intersectObjects(_objects);
  
      if (intersects.length > 0) {
  
        _selected = intersects[0].object;
  
        if (_raycaster.ray.intersectPlane(_plane, _intersection)) {
  
          _offset.copy(_intersection).sub(_selected.position);
  
        }
  
        _domElement.style.cursor = 'move';
  
        scope.dispatchEvent({
          type: 'dragstart',
          object: _selected
        });
  
      }
  
  
    }
  
    function onDocumentMouseCancel(event) {
  
      event.preventDefault();
  
      if (_selected) {
  
        scope.dispatchEvent({
          type: 'dragend',
          object: _selected
        });
  
        _selected = null;
  
      }
  
      _domElement.style.cursor = 'auto';
  
    }
  
    function onDocumentTouchMove(event) {
  
      event.preventDefault();
      event = event.changedTouches[0];
  
      var rect = _domElement.getBoundingClientRect();
  
      _mouse.x = ((event.clientX - rect.left) / rect.width) * 2 - 1;
      _mouse.y = -((event.clientY - rect.top) / rect.height) * 2 + 1;
  
      _raycaster.setFromCamera(_mouse, _camera);
  
      if (_selected && scope.enabled) {
  
        if (_raycaster.ray.intersectPlane(_plane, _intersection)) {
  
          _selected.position.copy(_intersection.sub(_offset));
  
        }
  
        scope.dispatchEvent({
          type: 'drag',
          object: _selected
        });
  
        return;
  
      }
  
    }
  
    function onDocumentTouchStart(event) {
  
      event.preventDefault();
      event = event.changedTouches[0];
  
      var rect = _domElement.getBoundingClientRect();
  
      _mouse.x = ((event.clientX - rect.left) / rect.width) * 2 - 1;
      _mouse.y = -((event.clientY - rect.top) / rect.height) * 2 + 1;
  
      _raycaster.setFromCamera(_mouse, _camera);
  
      var intersects = _raycaster.intersectObjects(_objects);
  
      if (intersects.length > 0) {
  
        _selected = intersects[0].object;
  
        _plane.setFromNormalAndCoplanarPoint(_camera.getWorldDirection(_plane.normal), _selected.position);
  
        if (_raycaster.ray.intersectPlane(_plane, _intersection)) {
  
          _offset.copy(_intersection).sub(_selected.position);
  
        }
  
        _domElement.style.cursor = 'move';
  
        scope.dispatchEvent({
          type: 'dragstart',
          object: _selected
        });
  
      }
  
  
    }
  
    function onDocumentTouchEnd(event) {
  
      event.preventDefault();
  
      if (_selected) {
  
        scope.dispatchEvent({
          type: 'dragend',
          object: _selected
        });
  
        _selected = null;
  
      }
  
      _domElement.style.cursor = 'auto';
  
    }
  
    activate();
  
    // API
  
    this.enabled = true;
  
    this.activate = activate;
    this.deactivate = deactivate;
    this.dispose = dispose;
  
    // Backward compatibility
  
    this.setObjects = function() {
  
      console.error('THREE.DragControls: setObjects() has been removed.');
  
    };
  
    this.on = function(type, listener) {
  
      console.warn('THREE.DragControls: on() has been deprecated. Use addEventListener() instead.');
      scope.addEventListener(type, listener);
  
    };
  
    this.off = function(type, listener) {
  
      console.warn('THREE.DragControls: off() has been deprecated. Use removeEventListener() instead.');
      scope.removeEventListener(type, listener);
  
    };
  
    this.notify = function(type) {
  
      console.error('THREE.DragControls: notify() has been deprecated. Use dispatchEvent() instead.');
      scope.dispatchEvent({
        type: type
      });
  
    };
  
  }
func_documentation_string: /*
  @author zz85 / https://github.com/zz85
  @author mrdoob / http://mrdoob.com
  Running this will allow you to drag three.js objects around the screen.