OrbitControls.js

				}

				break;

			case 2:

				switch ( scope.touches.TWO ) {

					case THREE.TOUCH.DOLLY_PAN:

						if ( scope.enableZoom === false && scope.enablePan === false ) return;

						handleTouchStartDollyPan( event );

						state = STATE.TOUCH_DOLLY_PAN;

						break;

					case THREE.TOUCH.DOLLY_ROTATE:

						if ( scope.enableZoom === false && scope.enableRotate === false ) return;

						handleTouchStartDollyRotate( event );

						state = STATE.TOUCH_DOLLY_ROTATE;

						break;

					default:

						state = STATE.NONE;

				}

				break;

			default:

				state = STATE.NONE;

		}

		if ( state !== STATE.NONE ) {

			scope.dispatchEvent( startEvent );

		}

	}

	function onTouchMove( event ) {

		if ( scope.enabled === false ) return;

		event.preventDefault();
		event.stopPropagation();

		switch ( state ) {

			case STATE.TOUCH_ROTATE:

				if ( scope.enableRotate === false ) return;

				handleTouchMoveRotate( event );

				scope.update();

				break;

			case STATE.TOUCH_PAN:

				if ( scope.enablePan === false ) return;

				handleTouchMovePan( event );

				scope.update();

				break;

			case STATE.TOUCH_DOLLY_PAN:

				if ( scope.enableZoom === false && scope.enablePan === false ) return;

				handleTouchMoveDollyPan( event );

				scope.update();

				break;

			case STATE.TOUCH_DOLLY_ROTATE:

				if ( scope.enableZoom === false && scope.enableRotate === false ) return;

				handleTouchMoveDollyRotate( event );

				scope.update();

				break;

			default:

				state = STATE.NONE;

		}

	}

	function onTouchEnd( event ) {

		if ( scope.enabled === false ) return;

		handleTouchEnd( event );

		scope.dispatchEvent( endEvent );

		state = STATE.NONE;

	}

	function onContextMenu( event ) {

		if ( scope.enabled === false ) return;

		event.preventDefault();

	}

	//

	scope.domElement.addEventListener( 'contextmenu', onContextMenu, false );

	scope.domElement.addEventListener( 'mousedown', onMouseDown, false );
	scope.domElement.addEventListener( 'wheel', onMouseWheel, false );

	scope.domElement.addEventListener( 'touchstart', onTouchStart, false );
	scope.domElement.addEventListener( 'touchend', onTouchEnd, false );
	scope.domElement.addEventListener( 'touchmove', onTouchMove, false );

	scope.domElement.addEventListener( 'keydown', onKeyDown, false );

	// make sure element can receive keys.

	if ( scope.domElement.tabIndex === - 1 ) {

		scope.domElement.tabIndex = 0;

	}

	// force an update at start

	this.update();

};

THREE.OrbitControls.prototype = Object.create( THREE.EventDispatcher.prototype );
THREE.OrbitControls.prototype.constructor = THREE.OrbitControls;


// This set of controls performs orbiting, dollying (zooming), and panning.
// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
// This is very similar to OrbitControls, another set of touch behavior
//
//    Orbit - right mouse, or left mouse + ctrl/meta/shiftKey / touch: two-finger rotate
//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
//    Pan - left mouse, or arrow keys / touch: one-finger move

THREE.MapControls = function ( object, domElement ) {

	THREE.OrbitControls.call( this, object, domElement );

	this.mouseButtons.LEFT = THREE.MOUSE.PAN;
	this.mouseButtons.RIGHT = THREE.MOUSE.ROTATE;

	this.touches.ONE = THREE.TOUCH.PAN;
	this.touches.TWO = THREE.TOUCH.DOLLY_ROTATE;

};

THREE.MapControls.prototype = Object.create( THREE.EventDispatcher.prototype );
THREE.MapControls.prototype.constructor = THREE.MapControls;