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+/**
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+ * @author Eberhard Graether / http://egraether.com/
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+ * @author Mark Lundin / http://mark-lundin.com
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+ * @author Patrick Fuller / http://patrick-fuller.com
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+ * @author Max Smolens / https://github.com/msmolens
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+ */
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+
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+import {
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+ EventDispatcher,
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+ Quaternion,
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+ Vector2,
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+ Vector3
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+} from "../../../build/three.module.js";
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+
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+var OrthographicTrackballControls = function ( object, domElement ) {
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+
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+ var _this = this;
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+ var STATE = { NONE: - 1, ROTATE: 0, ZOOM: 1, PAN: 2, TOUCH_ROTATE: 3, TOUCH_ZOOM_PAN: 4 };
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+
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+ this.object = object;
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+ this.domElement = ( domElement !== undefined ) ? domElement : document;
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+
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+ // API
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+
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+ this.enabled = true;
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+
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+ this.screen = { left: 0, top: 0, width: 0, height: 0 };
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+
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+ this.radius = 0;
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+
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+ this.rotateSpeed = 1.0;
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+ this.zoomSpeed = 1.2;
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+
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+ this.noRotate = false;
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+ this.noZoom = false;
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+ this.noPan = false;
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+ this.noRoll = false;
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+
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+ this.staticMoving = false;
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+ this.dynamicDampingFactor = 0.2;
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+
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+ this.keys = [ 65 /*A*/, 83 /*S*/, 68 /*D*/ ];
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+
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+ // internals
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+
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+ this.target = new Vector3();
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+
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+ var EPS = 0.000001;
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+
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+ var _changed = true;
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+
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+ var _state = STATE.NONE,
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+ _prevState = STATE.NONE,
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+
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+ _eye = new Vector3(),
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+
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+ _rotateStart = new Vector3(),
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+ _rotateEnd = new Vector3(),
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+
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+ _zoomStart = new Vector2(),
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+ _zoomEnd = new Vector2(),
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+
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+ _touchZoomDistanceStart = 0,
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+ _touchZoomDistanceEnd = 0,
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+
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+ _panStart = new Vector2(),
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+ _panEnd = new Vector2();
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+
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+ // for reset
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+
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+ this.target0 = this.target.clone();
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+ this.position0 = this.object.position.clone();
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+ this.up0 = this.object.up.clone();
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+
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+ this.left0 = this.object.left;
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+ this.right0 = this.object.right;
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+ this.top0 = this.object.top;
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+ this.bottom0 = this.object.bottom;
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+
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+ // events
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+
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+ var changeEvent = { type: 'change' };
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+ var startEvent = { type: 'start' };
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+ var endEvent = { type: 'end' };
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+
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+
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+ // methods
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+
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+ this.handleResize = function () {
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+
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+ if ( this.domElement === document ) {
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+
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+ this.screen.left = 0;
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+ this.screen.top = 0;
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+ this.screen.width = window.innerWidth;
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+ this.screen.height = window.innerHeight;
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+
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+ } else {
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+
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+ var box = this.domElement.getBoundingClientRect();
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+ // adjustments come from similar code in the jquery offset() function
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+ var d = this.domElement.ownerDocument.documentElement;
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+ this.screen.left = box.left + window.pageXOffset - d.clientLeft;
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+ this.screen.top = box.top + window.pageYOffset - d.clientTop;
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+ this.screen.width = box.width;
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+ this.screen.height = box.height;
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+
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+ }
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+
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+ this.radius = 0.5 * Math.min( this.screen.width, this.screen.height );
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+
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+ this.left0 = this.object.left;
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+ this.right0 = this.object.right;
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+ this.top0 = this.object.top;
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+ this.bottom0 = this.object.bottom;
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+
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+ };
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+
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+ var getMouseOnScreen = ( function () {
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+
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+ var vector = new Vector2();
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+
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+ return function getMouseOnScreen( pageX, pageY ) {
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+
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+ vector.set(
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+ ( pageX - _this.screen.left ) / _this.screen.width,
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+ ( pageY - _this.screen.top ) / _this.screen.height
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+ );
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+
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+ return vector;
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+
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+ };
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+
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+ }() );
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+
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+ var getMouseProjectionOnBall = ( function () {
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+
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+ var vector = new Vector3();
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+ var objectUp = new Vector3();
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+ var mouseOnBall = new Vector3();
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+
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+ return function getMouseProjectionOnBall( pageX, pageY ) {
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+
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+ mouseOnBall.set(
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+ ( pageX - _this.screen.width * 0.5 - _this.screen.left ) / _this.radius,
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+ ( _this.screen.height * 0.5 + _this.screen.top - pageY ) / _this.radius,
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+ 0.0
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+ );
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+
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+ var length = mouseOnBall.length();
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+
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+ if ( _this.noRoll ) {
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+
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+ if ( length < Math.SQRT1_2 ) {
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+
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+ mouseOnBall.z = Math.sqrt( 1.0 - length * length );
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+
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+ } else {
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+
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+ mouseOnBall.z = .5 / length;
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+
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+ }
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+
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+ } else if ( length > 1.0 ) {
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+
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+ mouseOnBall.normalize();
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+
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+ } else {
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+
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+ mouseOnBall.z = Math.sqrt( 1.0 - length * length );
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+
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+ }
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+
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+ _eye.copy( _this.object.position ).sub( _this.target );
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+
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+ vector.copy( _this.object.up ).setLength( mouseOnBall.y );
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+ vector.add( objectUp.copy( _this.object.up ).cross( _eye ).setLength( mouseOnBall.x ) );
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+ vector.add( _eye.setLength( mouseOnBall.z ) );
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+
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+ return vector;
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+
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+ };
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+
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+ }() );
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+
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+ this.rotateCamera = ( function () {
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+
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+ var axis = new Vector3(),
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+ quaternion = new Quaternion();
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+
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+
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+ return function rotateCamera() {
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+
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+ var angle = Math.acos( _rotateStart.dot( _rotateEnd ) / _rotateStart.length() / _rotateEnd.length() );
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+
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+ if ( angle ) {
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+
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+ axis.crossVectors( _rotateStart, _rotateEnd ).normalize();
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+
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+ angle *= _this.rotateSpeed;
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+
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+ quaternion.setFromAxisAngle( axis, - angle );
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+
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+ _eye.applyQuaternion( quaternion );
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+ _this.object.up.applyQuaternion( quaternion );
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+
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+ _rotateEnd.applyQuaternion( quaternion );
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+
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+ if ( _this.staticMoving ) {
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+
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+ _rotateStart.copy( _rotateEnd );
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+
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+ } else {
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+
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+ quaternion.setFromAxisAngle( axis, angle * ( _this.dynamicDampingFactor - 1.0 ) );
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+ _rotateStart.applyQuaternion( quaternion );
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+
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+ }
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+
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+ _changed = true;
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+
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+ }
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+
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+ };
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+
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+ }() );
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+
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+ this.zoomCamera = function () {
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+
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+ if ( _state === STATE.TOUCH_ZOOM_PAN ) {
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+
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+ var factor = _touchZoomDistanceEnd / _touchZoomDistanceStart;
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+ _touchZoomDistanceStart = _touchZoomDistanceEnd;
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+
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+ _this.object.zoom *= factor;
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+
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+ _changed = true;
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+
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+ } else {
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+
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+ var factor = 1.0 + ( _zoomEnd.y - _zoomStart.y ) * _this.zoomSpeed;
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+
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+ if ( Math.abs( factor - 1.0 ) > EPS && factor > 0.0 ) {
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+
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+ _this.object.zoom /= factor;
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+
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+ if ( _this.staticMoving ) {
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+
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+ _zoomStart.copy( _zoomEnd );
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+
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+ } else {
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+
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+ _zoomStart.y += ( _zoomEnd.y - _zoomStart.y ) * this.dynamicDampingFactor;
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+
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+ }
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+
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+ _changed = true;
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+
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+ }
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+
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+ }
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+
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+ };
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+
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+ this.panCamera = ( function () {
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+
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+ var mouseChange = new Vector2(),
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+ objectUp = new Vector3(),
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+ pan = new Vector3();
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+
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+ return function panCamera() {
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+
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+ mouseChange.copy( _panEnd ).sub( _panStart );
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+
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+ if ( mouseChange.lengthSq() ) {
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+
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+ // Scale movement to keep clicked/dragged position under cursor
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+ var scale_x = ( _this.object.right - _this.object.left ) / _this.object.zoom;
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+ var scale_y = ( _this.object.top - _this.object.bottom ) / _this.object.zoom;
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+ mouseChange.x *= scale_x;
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+ mouseChange.y *= scale_y;
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+
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+ pan.copy( _eye ).cross( _this.object.up ).setLength( mouseChange.x );
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+ pan.add( objectUp.copy( _this.object.up ).setLength( mouseChange.y ) );
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+
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+ _this.object.position.add( pan );
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+ _this.target.add( pan );
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+
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+ if ( _this.staticMoving ) {
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+
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+ _panStart.copy( _panEnd );
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+
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+ } else {
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+
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+ _panStart.add( mouseChange.subVectors( _panEnd, _panStart ).multiplyScalar( _this.dynamicDampingFactor ) );
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+
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+ }
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+
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+ _changed = true;
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+
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+ }
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+
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+ };
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+
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+ }() );
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+
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+ this.update = function () {
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+
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+ _eye.subVectors( _this.object.position, _this.target );
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+
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+ if ( ! _this.noRotate ) {
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+
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+ _this.rotateCamera();
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+
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+ }
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+
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+ if ( ! _this.noZoom ) {
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+
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+ _this.zoomCamera();
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+
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+ if ( _changed ) {
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+
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+ _this.object.updateProjectionMatrix();
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+
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+ }
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+
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+ }
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+
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+ if ( ! _this.noPan ) {
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+
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+ _this.panCamera();
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+
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+ }
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+
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+ _this.object.position.addVectors( _this.target, _eye );
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+
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+ _this.object.lookAt( _this.target );
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+
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+ if ( _changed ) {
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+
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+ _this.dispatchEvent( changeEvent );
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+
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+ _changed = false;
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+
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+ }
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+
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+ };
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+
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+ this.reset = function () {
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+
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+ _state = STATE.NONE;
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+ _prevState = STATE.NONE;
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+
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+ _this.target.copy( _this.target0 );
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+ _this.object.position.copy( _this.position0 );
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+ _this.object.up.copy( _this.up0 );
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+
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+ _eye.subVectors( _this.object.position, _this.target );
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+
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+ _this.object.left = _this.left0;
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+ _this.object.right = _this.right0;
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+ _this.object.top = _this.top0;
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+ _this.object.bottom = _this.bottom0;
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+
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+ _this.object.lookAt( _this.target );
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+
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+ _this.dispatchEvent( changeEvent );
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+
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+ _changed = false;
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+
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+ };
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+
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+ // listeners
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+
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+ function keydown( event ) {
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+
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+ if ( _this.enabled === false ) return;
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+
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+ window.removeEventListener( 'keydown', keydown );
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+
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+ _prevState = _state;
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+
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+ if ( _state !== STATE.NONE ) {
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+
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+ return;
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+
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+ } else if ( event.keyCode === _this.keys[ STATE.ROTATE ] && ! _this.noRotate ) {
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+
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+ _state = STATE.ROTATE;
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+
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+ } else if ( event.keyCode === _this.keys[ STATE.ZOOM ] && ! _this.noZoom ) {
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+
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+ _state = STATE.ZOOM;
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+
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+ } else if ( event.keyCode === _this.keys[ STATE.PAN ] && ! _this.noPan ) {
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+
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+ _state = STATE.PAN;
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+
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+ }
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+
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+ }
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+
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+ function keyup( event ) {
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+
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+ if ( _this.enabled === false ) return;
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+
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+ _state = _prevState;
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+
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+ window.addEventListener( 'keydown', keydown, false );
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+
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+ }
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+
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+ function mousedown( event ) {
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+
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+ if ( _this.enabled === false ) return;
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+
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+ event.preventDefault();
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+ event.stopPropagation();
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+
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+ if ( _state === STATE.NONE ) {
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+
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+ _state = event.button;
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+
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+ }
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+
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+ if ( _state === STATE.ROTATE && ! _this.noRotate ) {
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+
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+ _rotateStart.copy( getMouseProjectionOnBall( event.pageX, event.pageY ) );
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+ _rotateEnd.copy( _rotateStart );
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+
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+ } else if ( _state === STATE.ZOOM && ! _this.noZoom ) {
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+
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+ _zoomStart.copy( getMouseOnScreen( event.pageX, event.pageY ) );
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+ _zoomEnd.copy( _zoomStart );
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+
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+ } else if ( _state === STATE.PAN && ! _this.noPan ) {
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+
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+ _panStart.copy( getMouseOnScreen( event.pageX, event.pageY ) );
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+ _panEnd.copy( _panStart );
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+
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+ }
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+
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+ document.addEventListener( 'mousemove', mousemove, false );
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+ document.addEventListener( 'mouseup', mouseup, false );
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+
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+ _this.dispatchEvent( startEvent );
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+
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+ }
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+
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+ function mousemove( event ) {
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+
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+ if ( _this.enabled === false ) return;
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+
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+ event.preventDefault();
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+ event.stopPropagation();
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+
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+ if ( _state === STATE.ROTATE && ! _this.noRotate ) {
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+
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+ _rotateEnd.copy( getMouseProjectionOnBall( event.pageX, event.pageY ) );
|
|
|
+
|
|
|
+ } else if ( _state === STATE.ZOOM && ! _this.noZoom ) {
|
|
|
+
|
|
|
+ _zoomEnd.copy( getMouseOnScreen( event.pageX, event.pageY ) );
|
|
|
+
|
|
|
+ } else if ( _state === STATE.PAN && ! _this.noPan ) {
|
|
|
+
|
|
|
+ _panEnd.copy( getMouseOnScreen( event.pageX, event.pageY ) );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function mouseup( event ) {
|
|
|
+
|
|
|
+ if ( _this.enabled === false ) return;
|
|
|
+
|
|
|
+ event.preventDefault();
|
|
|
+ event.stopPropagation();
|
|
|
+
|
|
|
+ _state = STATE.NONE;
|
|
|
+
|
|
|
+ document.removeEventListener( 'mousemove', mousemove );
|
|
|
+ document.removeEventListener( 'mouseup', mouseup );
|
|
|
+ _this.dispatchEvent( endEvent );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function mousewheel( event ) {
|
|
|
+
|
|
|
+ if ( _this.enabled === false ) return;
|
|
|
+
|
|
|
+ event.preventDefault();
|
|
|
+ event.stopPropagation();
|
|
|
+
|
|
|
+ _zoomStart.y += event.deltaY * 0.01;
|
|
|
+ _this.dispatchEvent( startEvent );
|
|
|
+ _this.dispatchEvent( endEvent );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function touchstart( event ) {
|
|
|
+
|
|
|
+ if ( _this.enabled === false ) return;
|
|
|
+
|
|
|
+ switch ( event.touches.length ) {
|
|
|
+
|
|
|
+ case 1:
|
|
|
+ _state = STATE.TOUCH_ROTATE;
|
|
|
+ _rotateStart.copy( getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ) );
|
|
|
+ _rotateEnd.copy( _rotateStart );
|
|
|
+ break;
|
|
|
+
|
|
|
+ case 2:
|
|
|
+ _state = STATE.TOUCH_ZOOM_PAN;
|
|
|
+ var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
|
|
|
+ var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
|
|
|
+ _touchZoomDistanceEnd = _touchZoomDistanceStart = Math.sqrt( dx * dx + dy * dy );
|
|
|
+
|
|
|
+ var x = ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX ) / 2;
|
|
|
+ var y = ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY ) / 2;
|
|
|
+ _panStart.copy( getMouseOnScreen( x, y ) );
|
|
|
+ _panEnd.copy( _panStart );
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ _state = STATE.NONE;
|
|
|
+
|
|
|
+ }
|
|
|
+ _this.dispatchEvent( startEvent );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function touchmove( event ) {
|
|
|
+
|
|
|
+ if ( _this.enabled === false ) return;
|
|
|
+
|
|
|
+ event.preventDefault();
|
|
|
+ event.stopPropagation();
|
|
|
+
|
|
|
+ switch ( event.touches.length ) {
|
|
|
+
|
|
|
+ case 1:
|
|
|
+ _rotateEnd.copy( getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ) );
|
|
|
+ break;
|
|
|
+
|
|
|
+ case 2:
|
|
|
+ var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
|
|
|
+ var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
|
|
|
+ _touchZoomDistanceEnd = Math.sqrt( dx * dx + dy * dy );
|
|
|
+
|
|
|
+ var x = ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX ) / 2;
|
|
|
+ var y = ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY ) / 2;
|
|
|
+ _panEnd.copy( getMouseOnScreen( x, y ) );
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ _state = STATE.NONE;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function touchend( event ) {
|
|
|
+
|
|
|
+ if ( _this.enabled === false ) return;
|
|
|
+
|
|
|
+ switch ( event.touches.length ) {
|
|
|
+
|
|
|
+ case 1:
|
|
|
+ _rotateEnd.copy( getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ) );
|
|
|
+ _rotateStart.copy( _rotateEnd );
|
|
|
+ break;
|
|
|
+
|
|
|
+ case 2:
|
|
|
+ _touchZoomDistanceStart = _touchZoomDistanceEnd = 0;
|
|
|
+
|
|
|
+ var x = ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX ) / 2;
|
|
|
+ var y = ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY ) / 2;
|
|
|
+ _panEnd.copy( getMouseOnScreen( x, y ) );
|
|
|
+ _panStart.copy( _panEnd );
|
|
|
+ break;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ _state = STATE.NONE;
|
|
|
+ _this.dispatchEvent( endEvent );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function contextmenu( event ) {
|
|
|
+
|
|
|
+ event.preventDefault();
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ this.dispose = function () {
|
|
|
+
|
|
|
+ this.domElement.removeEventListener( 'contextmenu', contextmenu, false );
|
|
|
+ this.domElement.removeEventListener( 'mousedown', mousedown, false );
|
|
|
+ this.domElement.removeEventListener( 'wheel', mousewheel, false );
|
|
|
+
|
|
|
+ this.domElement.removeEventListener( 'touchstart', touchstart, false );
|
|
|
+ this.domElement.removeEventListener( 'touchend', touchend, false );
|
|
|
+ this.domElement.removeEventListener( 'touchmove', touchmove, false );
|
|
|
+
|
|
|
+ document.removeEventListener( 'mousemove', mousemove, false );
|
|
|
+ document.removeEventListener( 'mouseup', mouseup, false );
|
|
|
+
|
|
|
+ window.removeEventListener( 'keydown', keydown, false );
|
|
|
+ window.removeEventListener( 'keyup', keyup, false );
|
|
|
+
|
|
|
+ };
|
|
|
+
|
|
|
+ this.domElement.addEventListener( 'contextmenu', contextmenu, false );
|
|
|
+ this.domElement.addEventListener( 'mousedown', mousedown, false );
|
|
|
+ this.domElement.addEventListener( 'wheel', mousewheel, false );
|
|
|
+
|
|
|
+ this.domElement.addEventListener( 'touchstart', touchstart, false );
|
|
|
+ this.domElement.addEventListener( 'touchend', touchend, false );
|
|
|
+ this.domElement.addEventListener( 'touchmove', touchmove, false );
|
|
|
+
|
|
|
+ window.addEventListener( 'keydown', keydown, false );
|
|
|
+ window.addEventListener( 'keyup', keyup, false );
|
|
|
+
|
|
|
+ this.handleResize();
|
|
|
+
|
|
|
+ // force an update at start
|
|
|
+ this.update();
|
|
|
+
|
|
|
+};
|
|
|
+
|
|
|
+OrthographicTrackballControls.prototype = Object.create( EventDispatcher.prototype );
|
|
|
+OrthographicTrackballControls.prototype.constructor = OrthographicTrackballControls;
|
|
|
+
|
|
|
+export { OrthographicTrackballControls };
|