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@@ -0,0 +1,161 @@
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+/**
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+ * @author qiao / https://github.com/qiao
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+ * @author mrdoob / http://mrdoob.com
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+ * @author alteredq / http://alteredqualia.com/
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+ * @author WestLangley / http://github.com/WestLangley
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+ */
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+
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+THREE.EditorControls = function ( object, domElement ) {
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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.center = new THREE.Vector3();
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+
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+ // internals
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+
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+ var scope = this;
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+ var normalMatrix = new THREE.Matrix3();
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+
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+ var STATE = { NONE: -1, ROTATE: 0, ZOOM: 1, PAN: 2 };
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+ var state = STATE.NONE;
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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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+
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+ this.pan = function ( distance ) {
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+
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+ normalMatrix.getNormalMatrix( this.object.matrix );
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+
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+ distance.applyMatrix3( normalMatrix );
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+
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+ this.object.position.add( distance );
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+ this.center.add( distance );
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+
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+ this.dispatchEvent( changeEvent );
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+
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+ };
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+
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+ this.rotate = function ( delta ) {
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+
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+ var position = this.object.position;
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+ var offset = position.clone().sub( this.center );
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+
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+ var theta = Math.atan2( offset.x, offset.z );
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+ var phi = Math.atan2( Math.sqrt( offset.x * offset.x + offset.z * offset.z ), offset.y );
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+
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+ theta += delta.x;
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+ phi += delta.y;
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+
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+ var EPS = 0.000001;
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+
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+ phi = Math.max( EPS, Math.min( Math.PI - EPS, phi ) );
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+
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+ var radius = offset.length();
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+
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+ offset.x = radius * Math.sin( phi ) * Math.sin( theta );
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+ offset.y = radius * Math.cos( phi );
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+ offset.z = radius * Math.sin( phi ) * Math.cos( theta );
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+
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+ position.copy( this.center ).add( offset );
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+
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+ this.object.lookAt( this.center );
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+
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+ this.dispatchEvent( changeEvent );
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+
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+ };
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+
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+ function onMouseDown( event ) {
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+
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+ if ( scope.enabled === false ) return;
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+
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+ event.preventDefault();
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+
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+ if ( event.button === 0 ) {
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+
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+ state = STATE.ROTATE;
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+
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+ } else if ( event.button === 1 ) {
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+
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+ state = STATE.ZOOM;
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+
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+ } else if ( event.button === 2 ) {
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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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+ document.addEventListener( 'mousemove', onMouseMove, false );
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+ document.addEventListener( 'mouseup', onMouseUp, false );
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+
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+ }
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+
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+ function onMouseMove( event ) {
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+
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+ if ( scope.enabled === false ) return;
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+
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+ event.preventDefault();
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+
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+ var movementX = event.movementX || event.mozMovementX || event.webkitMovementX || 0;
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+ var movementY = event.movementY || event.mozMovementY || event.webkitMovementY || 0;
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+
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+ if ( state === STATE.ROTATE ) {
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+
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+ scope.rotate( new THREE.Vector3( - movementX * 0.005, - movementY * 0.005, 0 ) );
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+
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+ } else if ( state === STATE.ZOOM ) {
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+
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+ scope.pan( new THREE.Vector3( 0, 0, movementY ) );
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+
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+ } else if ( state === STATE.PAN ) {
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+
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+ scope.pan( new THREE.Vector3( - movementX * 0.5, movementY * 0.5, 0 ) );
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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 onMouseUp( event ) {
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+
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+ if ( scope.enabled === false ) return;
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+
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+ document.removeEventListener( 'mousemove', onMouseMove, false );
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+ document.removeEventListener( 'mouseup', onMouseUp, false );
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+
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+ state = STATE.NONE;
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+
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+ }
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+
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+ function onMouseWheel( event ) {
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+
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+ if ( scope.enabled === false ) return;
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+
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+ var delta = 0;
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+
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+ if ( event.wheelDelta ) { // WebKit / Opera / Explorer 9
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+
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+ delta = - event.wheelDelta;
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+
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+ } else if ( event.detail ) { // Firefox
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+
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+ delta = event.detail;
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+
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+ }
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+
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+ scope.pan( new THREE.Vector3( 0, 0, delta * 0.1 ) );
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+
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+ }
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+
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+ this.domElement.addEventListener( 'contextmenu', function ( event ) { event.preventDefault(); }, false );
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+ this.domElement.addEventListener( 'mousedown', onMouseDown, false );
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+ this.domElement.addEventListener( 'mousewheel', onMouseWheel, false );
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+ this.domElement.addEventListener( 'DOMMouseScroll', onMouseWheel, false ); // firefox
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+
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+};
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+
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+THREE.EditorControls.prototype = Object.create( THREE.EventDispatcher.prototype );
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Mr.doob