// raw.githubusercontent.com/mrdoob/three.js/master/examples/jsm/controls/OrbitControls.js

/**

* @author qiao / https://github.com/qiao
* @author mrdoob / http://mrdoob.com
* @author alteredq / http://alteredqualia.com/
* @author WestLangley / http://github.com/WestLangley
* @author erich666 / http://erichaines.com
* @author ScieCode / http://github.com/sciecode
*/

import {

EventDispatcher,
MOUSE,
Quaternion,
Spherical,
TOUCH,
Vector2,
Vector3

} from “three”;

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

var OrbitControls = function ( object, domElement ) {

this.object = object;

this.domElement = ( domElement !== undefined ) ? domElement : document;

// Set to false to disable this control
this.enabled = true;

// "target" sets the location of focus, where the object orbits around
this.target = new Vector3();

// How far you can dolly in and out ( PerspectiveCamera only )
this.minDistance = 0;
this.maxDistance = Infinity;

// How far you can zoom in and out ( OrthographicCamera only )
this.minZoom = 0;
this.maxZoom = Infinity;

// How far you can orbit vertically, upper and lower limits.
// Range is 0 to Math.PI radians.
this.minPolarAngle = 0; // radians
this.maxPolarAngle = Math.PI; // radians

// How far you can orbit horizontally, upper and lower limits.
// If set, must be a sub-interval of the interval [ - Math.PI, Math.PI ].
this.minAzimuthAngle = - Infinity; // radians
this.maxAzimuthAngle = Infinity; // radians

// Set to true to enable damping (inertia)
// If damping is enabled, you must call controls.update() in your animation loop
this.enableDamping = false;
this.dampingFactor = 0.05;

// This option actually enables dollying in and out; left as "zoom" for backwards compatibility.
// Set to false to disable zooming
this.enableZoom = true;
this.zoomSpeed = 1.0;

// Set to false to disable rotating
this.enableRotate = true;
this.rotateSpeed = 1.0;

// Set to false to disable panning
this.enablePan = true;
this.panSpeed = 1.0;
this.screenSpacePanning = false; // if true, pan in screen-space
this.keyPanSpeed = 7.0; // pixels moved per arrow key push

// Set to true to automatically rotate around the target
// If auto-rotate is enabled, you must call controls.update() in your animation loop
this.autoRotate = false;
this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60

// Set to false to disable use of the keys
this.enableKeys = true;

// The four arrow keys
this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };

// Mouse buttons
this.mouseButtons = { LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.PAN };

// Touch fingers
this.touches = { ONE: TOUCH.ROTATE, TWO: TOUCH.DOLLY_PAN };

// for reset
this.target0 = this.target.clone();
this.position0 = this.object.position.clone();
this.zoom0 = this.object.zoom;

//
// public methods
//

this.getPolarAngle = function () {

        return spherical.phi;

};

this.getAzimuthalAngle = function () {

        return spherical.theta;

};

this.saveState = function () {

        scope.target0.copy( scope.target );
        scope.position0.copy( scope.object.position );
        scope.zoom0 = scope.object.zoom;

};

this.reset = function () {

        scope.target.copy( scope.target0 );
        scope.object.position.copy( scope.position0 );
        scope.object.zoom = scope.zoom0;

        scope.object.updateProjectionMatrix();
        scope.dispatchEvent( changeEvent );

        scope.update();

        state = STATE.NONE;

};

// this method is exposed, but perhaps it would be better if we can make it private...
this.update = function () {

        var offset = new Vector3();

        // so camera.up is the orbit axis
        var quat = new Quaternion().setFromUnitVectors( object.up, new Vector3( 0, 1, 0 ) );
        var quatInverse = quat.clone().inverse();

        var lastPosition = new Vector3();
        var lastQuaternion = new Quaternion();

        return function update() {

                var position = scope.object.position;

                offset.copy( position ).sub( scope.target );

                // rotate offset to "y-axis-is-up" space
                offset.applyQuaternion( quat );

                // angle from z-axis around y-axis
                spherical.setFromVector3( offset );

                if ( scope.autoRotate && state === STATE.NONE ) {

                        rotateLeft( getAutoRotationAngle() );

                }

                if ( scope.enableDamping ) {

                        spherical.theta += sphericalDelta.theta * scope.dampingFactor;
                        spherical.phi += sphericalDelta.phi * scope.dampingFactor;

                } else {

                        spherical.theta += sphericalDelta.theta;
                        spherical.phi += sphericalDelta.phi;

                }

                // restrict theta to be between desired limits
                spherical.theta = Math.max( scope.minAzimuthAngle, Math.min( scope.maxAzimuthAngle, spherical.theta ) );

                // restrict phi to be between desired limits
                spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );

                spherical.makeSafe();

                spherical.radius *= scale;

                // restrict radius to be between desired limits
                spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );

                // move target to panned location

                if ( scope.enableDamping === true ) {

                        scope.target.addScaledVector( panOffset, scope.dampingFactor );

                } else {

                        scope.target.add( panOffset );

                }

                offset.setFromSpherical( spherical );

                // rotate offset back to "camera-up-vector-is-up" space
                offset.applyQuaternion( quatInverse );

                position.copy( scope.target ).add( offset );

                scope.object.lookAt( scope.target );

                if ( scope.enableDamping === true ) {

                        sphericalDelta.theta *= ( 1 - scope.dampingFactor );
                        sphericalDelta.phi *= ( 1 - scope.dampingFactor );

                        panOffset.multiplyScalar( 1 - scope.dampingFactor );

                } else {

                        sphericalDelta.set( 0, 0, 0 );

                        panOffset.set( 0, 0, 0 );

                }

                scale = 1;

                // update condition is:
                // min(camera displacement, camera rotation in radians)^2 > EPS
                // using small-angle approximation cos(x/2) = 1 - x^2 / 8

                if ( zoomChanged ||
                        lastPosition.distanceToSquared( scope.object.position ) > EPS ||
                        8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {

                        scope.dispatchEvent( changeEvent );

                        lastPosition.copy( scope.object.position );
                        lastQuaternion.copy( scope.object.quaternion );
                        zoomChanged = false;

                        return true;

                }

                return false;

        };

}();

this.dispose = function () {

        scope.domElement.removeEventListener( 'contextmenu', onContextMenu, false );
        scope.domElement.removeEventListener( 'mousedown', onMouseDown, false );
        scope.domElement.removeEventListener( 'wheel', onMouseWheel, false );

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

        document.removeEventListener( 'mousemove', onMouseMove, false );
        document.removeEventListener( 'mouseup', onMouseUp, false );

        window.removeEventListener( 'keydown', onKeyDown, false );

        //scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?

};

//
// internals
//

var scope = this;

var changeEvent = { type: 'change' };
var startEvent = { type: 'start' };
var endEvent = { type: 'end' };

var STATE = {
        NONE: - 1,
        ROTATE: 0,
        DOLLY: 1,
        PAN: 2,
        TOUCH_ROTATE: 3,
        TOUCH_PAN: 4,
        TOUCH_DOLLY_PAN: 5,
        TOUCH_DOLLY_ROTATE: 6
};

var state = STATE.NONE;

var EPS = 0.000001;

// current position in spherical coordinates
var spherical = new Spherical();
var sphericalDelta = new Spherical();

var scale = 1;
var panOffset = new Vector3();
var zoomChanged = false;

var rotateStart = new Vector2();
var rotateEnd = new Vector2();
var rotateDelta = new Vector2();

var panStart = new Vector2();
var panEnd = new Vector2();
var panDelta = new Vector2();

var dollyStart = new Vector2();
var dollyEnd = new Vector2();
var dollyDelta = new Vector2();

function getAutoRotationAngle() {

        return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;

}

function getZoomScale() {

        return Math.pow( 0.95, scope.zoomSpeed );

}

function rotateLeft( angle ) {

        sphericalDelta.theta -= angle;

}

function rotateUp( angle ) {

        sphericalDelta.phi -= angle;

}

var panLeft = function () {

        var v = new Vector3();

        return function panLeft( distance, objectMatrix ) {

                v.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix
                v.multiplyScalar( - distance );

                panOffset.add( v );

        };

}();

var panUp = function () {

        var v = new Vector3();

        return function panUp( distance, objectMatrix ) {

                if ( scope.screenSpacePanning === true ) {

                        v.setFromMatrixColumn( objectMatrix, 1 );

                } else {

                        v.setFromMatrixColumn( objectMatrix, 0 );
                        v.crossVectors( scope.object.up, v );

                }

                v.multiplyScalar( distance );

                panOffset.add( v );

        };

}();

// deltaX and deltaY are in pixels; right and down are positive
var pan = function () {

        var offset = new Vector3();

        return function pan( deltaX, deltaY ) {

                var element = scope.domElement === document ? scope.domElement.body : scope.domElement;

                if ( scope.object.isPerspectiveCamera ) {

                        // perspective
                        var position = scope.object.position;
                        offset.copy( position ).sub( scope.target );
                        var targetDistance = offset.length();

                        // half of the fov is center to top of screen
                        targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );

                        // we use only clientHeight here so aspect ratio does not distort speed
                        panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );
                        panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );

                } else if ( scope.object.isOrthographicCamera ) {

                        // orthographic
                        panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );
                        panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );

                } else {

                        // camera neither orthographic nor perspective
                        console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
                        scope.enablePan = false;

                }

        };

}();

function dollyIn( dollyScale ) {

        if ( scope.object.isPerspectiveCamera ) {

                scale /= dollyScale;

        } else if ( scope.object.isOrthographicCamera ) {

                scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );
                scope.object.updateProjectionMatrix();
                zoomChanged = true;

        } else {

                console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
                scope.enableZoom = false;

        }

}

function dollyOut( dollyScale ) {

        if ( scope.object.isPerspectiveCamera ) {

                scale *= dollyScale;

        } else if ( scope.object.isOrthographicCamera ) {

                scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );
                scope.object.updateProjectionMatrix();
                zoomChanged = true;

        } else {

                console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
                scope.enableZoom = false;

        }

}

//
// event callbacks - update the object state
//

function handleMouseDownRotate( event ) {

        rotateStart.set( event.clientX, event.clientY );

}

function handleMouseDownDolly( event ) {

        dollyStart.set( event.clientX, event.clientY );

}

function handleMouseDownPan( event ) {

        panStart.set( event.clientX, event.clientY );

}

function handleMouseMoveRotate( event ) {

        rotateEnd.set( event.clientX, event.clientY );

        rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );

        var element = scope.domElement === document ? scope.domElement.body : scope.domElement;

        rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height

        rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );

        rotateStart.copy( rotateEnd );

        scope.update();

}

function handleMouseMoveDolly( event ) {

        dollyEnd.set( event.clientX, event.clientY );

        dollyDelta.subVectors( dollyEnd, dollyStart );

        if ( dollyDelta.y > 0 ) {

                dollyIn( getZoomScale() );

        } else if ( dollyDelta.y < 0 ) {

                dollyOut( getZoomScale() );

        }

        dollyStart.copy( dollyEnd );

        scope.update();

}

function handleMouseMovePan( event ) {

        panEnd.set( event.clientX, event.clientY );

        panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );

        pan( panDelta.x, panDelta.y );

        panStart.copy( panEnd );

        scope.update();

}

function handleMouseUp( /*event*/ ) {

        // no-op

}

function handleMouseWheel( event ) {

        if ( event.deltaY < 0 ) {

                dollyOut( getZoomScale() );

        } else if ( event.deltaY > 0 ) {

                dollyIn( getZoomScale() );

        }

        scope.update();

}

function handleKeyDown( event ) {

        var needsUpdate = false;

        switch ( event.keyCode ) {

                case scope.keys.UP:
                        pan( 0, scope.keyPanSpeed );
                        needsUpdate = true;
                        break;

                case scope.keys.BOTTOM:
                        pan( 0, - scope.keyPanSpeed );
                        needsUpdate = true;
                        break;

                case scope.keys.LEFT:
                        pan( scope.keyPanSpeed, 0 );
                        needsUpdate = true;
                        break;

                case scope.keys.RIGHT:
                        pan( - scope.keyPanSpeed, 0 );
                        needsUpdate = true;
                        break;

        }

        if ( needsUpdate ) {

                // prevent the browser from scrolling on cursor keys
                event.preventDefault();

                scope.update();

        }

}

function handleTouchStartRotate( event ) {

        if ( event.touches.length == 1 ) {

                rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );

        } else {

                var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
                var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );

                rotateStart.set( x, y );

        }

}

function handleTouchStartPan( event ) {

        if ( event.touches.length == 1 ) {

                panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );

        } else {

                var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
                var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );

                panStart.set( x, y );

        }

}

function handleTouchStartDolly( event ) {

        var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
        var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;

        var distance = Math.sqrt( dx * dx + dy * dy );

        dollyStart.set( 0, distance );

}

function handleTouchStartDollyPan( event ) {

        if ( scope.enableZoom ) handleTouchStartDolly( event );

        if ( scope.enablePan ) handleTouchStartPan( event );

}

function handleTouchStartDollyRotate( event ) {

        if ( scope.enableZoom ) handleTouchStartDolly( event );

        if ( scope.enableRotate ) handleTouchStartRotate( event );

}

function handleTouchMoveRotate( event ) {

        if ( event.touches.length == 1 ) {

                rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );

        } else {

                var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
                var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );

                rotateEnd.set( x, y );

        }

        rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );

        var element = scope.domElement === document ? scope.domElement.body : scope.domElement;

        rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height

        rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );

        rotateStart.copy( rotateEnd );

}

function handleTouchMovePan( event ) {

        if ( event.touches.length == 1 ) {

                panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );

        } else {

                var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
                var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );

                panEnd.set( x, y );

        }

        panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );

        pan( panDelta.x, panDelta.y );

        panStart.copy( panEnd );

}

function handleTouchMoveDolly( event ) {

        var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
        var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;

        var distance = Math.sqrt( dx * dx + dy * dy );

        dollyEnd.set( 0, distance );

        dollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) );

        dollyIn( dollyDelta.y );

        dollyStart.copy( dollyEnd );

}

function handleTouchMoveDollyPan( event ) {

        if ( scope.enableZoom ) handleTouchMoveDolly( event );

        if ( scope.enablePan ) handleTouchMovePan( event );

}

function handleTouchMoveDollyRotate( event ) {

        if ( scope.enableZoom ) handleTouchMoveDolly( event );

        if ( scope.enableRotate ) handleTouchMoveRotate( event );

}

function handleTouchEnd( /*event*/ ) {

        // no-op

}

//
// event handlers - FSM: listen for events and reset state
//

function onMouseDown( event ) {

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

        // Prevent the browser from scrolling.

        event.preventDefault();

        // Manually set the focus since calling preventDefault above
        // prevents the browser from setting it automatically.

        scope.domElement.focus ? scope.domElement.focus() : window.focus();

        switch ( event.button ) {

                case 0:

                        switch ( scope.mouseButtons.LEFT ) {

                                case MOUSE.ROTATE:

                                        if ( event.ctrlKey || event.metaKey || event.shiftKey ) {

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

                                                handleMouseDownPan( event );

                                                state = STATE.PAN;

                                        } else {

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

                                                handleMouseDownRotate( event );

                                                state = STATE.ROTATE;

                                        }

                                        break;

                                case MOUSE.PAN:

                                        if ( event.ctrlKey || event.metaKey || event.shiftKey ) {

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

                                                handleMouseDownRotate( event );

                                                state = STATE.ROTATE;

                                        } else {

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

                                                handleMouseDownPan( event );

                                                state = STATE.PAN;

                                        }

                                        break;

                                default:

                                        state = STATE.NONE;

                        }

                        break;

                case 1:

                        switch ( scope.mouseButtons.MIDDLE ) {

                                case MOUSE.DOLLY:

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

                                        handleMouseDownDolly( event );

                                        state = STATE.DOLLY;

                                        break;

                                default:

                                        state = STATE.NONE;

                        }

                        break;

                case 2:

                        switch ( scope.mouseButtons.RIGHT ) {

                                case MOUSE.ROTATE:

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

                                        handleMouseDownRotate( event );

                                        state = STATE.ROTATE;

                                        break;

                                case MOUSE.PAN:

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

                                        handleMouseDownPan( event );

                                        state = STATE.PAN;

                                        break;

                                default:

                                        state = STATE.NONE;

                        }

                        break;

        }

        if ( state !== STATE.NONE ) {

                document.addEventListener( 'mousemove', onMouseMove, false );
                document.addEventListener( 'mouseup', onMouseUp, false );

                scope.dispatchEvent( startEvent );

        }

}

function onMouseMove( event ) {

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

        event.preventDefault();

        switch ( state ) {

                case STATE.ROTATE:

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

                        handleMouseMoveRotate( event );

                        break;

                case STATE.DOLLY:

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

                        handleMouseMoveDolly( event );

                        break;

                case STATE.PAN:

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

                        handleMouseMovePan( event );

                        break;

        }

}

function onMouseUp( event ) {

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

        handleMouseUp( event );

        document.removeEventListener( 'mousemove', onMouseMove, false );
        document.removeEventListener( 'mouseup', onMouseUp, false );

        scope.dispatchEvent( endEvent );

        state = STATE.NONE;

}

function onMouseWheel( event ) {

        if ( scope.enabled === false || scope.enableZoom === false || ( state !== STATE.NONE && state !== STATE.ROTATE ) ) return;

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

        scope.dispatchEvent( startEvent );

        handleMouseWheel( event );

        scope.dispatchEvent( endEvent );

}

function onKeyDown( event ) {

        if ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;

        handleKeyDown( event );

}

function onTouchStart( event ) {

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

        event.preventDefault();

        switch ( event.touches.length ) {

                case 1:

                        switch ( scope.touches.ONE ) {

                                case TOUCH.ROTATE:

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

                                        handleTouchStartRotate( event );

                                        state = STATE.TOUCH_ROTATE;

                                        break;

                                case TOUCH.PAN:

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

                                        handleTouchStartPan( event );

                                        state = STATE.TOUCH_PAN;

                                        break;

                                default:

                                        state = STATE.NONE;

                        }

                        break;

                case 2:

                        switch ( scope.touches.TWO ) {

                                case TOUCH.DOLLY_PAN:

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

                                        handleTouchStartDollyPan( event );

                                        state = STATE.TOUCH_DOLLY_PAN;

                                        break;

                                case 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 );

window.addEventListener( 'keydown', onKeyDown, false );

// force an update at start

this.update();

};

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

var MapControls = function ( object, domElement ) {

OrbitControls.call( this, object, domElement );

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

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

};

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

export { OrbitControls, MapControls };