OrthographicTrackballControls: sync with TrackballControls

examples/js/controls/OrthographicTrackballControls.js

@@ -6,7 +6,7 @@
 THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 	var _this = this;
-	var STATE = { NONE: -1, ROTATE: 0, ZOOM: 1, PAN: 2, TOUCH_ROTATE: 3, TOUCH_ZOOM: 4, TOUCH_PAN: 5 };
+	var STATE = { NONE: -1, ROTATE: 0, ZOOM: 1, PAN: 2, TOUCH_ROTATE: 3, TOUCH_ZOOM_PAN: 4 };
 
 	this.object = object;
 	this.domElement = ( domElement !== undefined ) ? domElement : document;
@@ -15,8 +15,7 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 	this.enabled = true;
 
-	this.screen = { width: 0, height: 0, offsetLeft: 0, offsetTop: 0 };
-	this.radius = ( this.screen.width + this.screen.height ) / 4;
+	this.screen = { left: 0, top: 0, width: 0, height: 0 };
 
 	this.rotateSpeed = 1.0;
 	this.zoomSpeed = 1.2;
@@ -25,6 +24,7 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 	this.noRotate = false;
 	this.noZoom = false;
 	this.noPan = false;
+	this.noRoll = false;
 
 	this.staticMoving = false;
 	this.dynamicDampingFactor = 0.2;
@@ -35,6 +35,8 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 	this.target = new THREE.Vector3();
 
+	var EPS = 0.000001;
+
 	var lastPosition = new THREE.Vector3();
 
 	var _state = STATE.NONE,
@@ -70,19 +72,31 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 	// events
 
 	var changeEvent = { type: 'change' };
-
+	var startEvent = { type: 'start'};
+	var endEvent = { type: 'end'};
 
 	// methods
 
 	this.handleResize = function () {
 
-		this.screen.width = window.innerWidth;
-		this.screen.height = window.innerHeight;
+		if ( this.domElement === document ) {
 
-		this.screen.offsetLeft = 0;
-		this.screen.offsetTop = 0;
+			this.screen.left = 0;
+			this.screen.top = 0;
+			this.screen.width = window.innerWidth;
+			this.screen.height = window.innerHeight;
+
+		} else {
 
-		this.radius = ( this.screen.width + this.screen.height ) / 4;
+			var box = this.domElement.getBoundingClientRect();
+			// adjustments come from similar code in the jquery offset() function
+			var d = this.domElement.ownerDocument.documentElement;
+			this.screen.left = box.left + window.pageXOffset - d.clientLeft;
+			this.screen.top = box.top + window.pageYOffset - d.clientTop;
+			this.screen.width = box.width;
+			this.screen.height = box.height;
+
+		}
 
 	};
 
@@ -96,81 +110,115 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 	};
 
-	this.getMouseOnScreen = function ( clientX, clientY ) {
+	var getMouseOnScreen = ( function () {
 
-		return new THREE.Vector2(
-			( clientX - _this.screen.offsetLeft ) / _this.radius * 0.5,
-			( clientY - _this.screen.offsetTop ) / _this.radius * 0.5
-		);
+		var vector = new THREE.Vector2();
 
-	};
+		return function ( pageX, pageY ) {
 
-	this.getMouseProjectionOnBall = function ( clientX, clientY ) {
+			vector.set(
+				( pageX - _this.screen.left ) / _this.screen.width,
+				( pageY - _this.screen.top ) / _this.screen.height
+			);
 
-		var mouseOnBall = new THREE.Vector3(
-			( clientX - _this.screen.width * 0.5 - _this.screen.offsetLeft ) / _this.radius,
-			( _this.screen.height * 0.5 + _this.screen.offsetTop - clientY ) / _this.radius,
-			0.0
-		);
+			return vector;
 
-		var length = mouseOnBall.length();
+		};
 
-		if ( length > 1.0 ) {
+	}() );
 
-			mouseOnBall.normalize();
+	var getMouseProjectionOnBall = ( function () {
 
-		} else {
+		var vector = new THREE.Vector3();
+		var objectUp = new THREE.Vector3();
+		var mouseOnBall = new THREE.Vector3();
 
-			mouseOnBall.z = Math.sqrt( 1.0 - length * length );
+		return function ( pageX, pageY ) {
 
-		}
+			mouseOnBall.set(
+				( pageX - _this.screen.width * 0.5 - _this.screen.left ) / (_this.screen.width*.5),
+				( _this.screen.height * 0.5 + _this.screen.top - pageY ) / (_this.screen.height*.5),
+				0.0
+			);
 
-		_eye.copy( _this.object.position ).sub( _this.target );
+			var length = mouseOnBall.length();
 
-		var projection = _this.object.up.clone().setLength( mouseOnBall.y );
-		projection.add( _this.object.up.clone().cross( _eye ).setLength( mouseOnBall.x ) );
-		projection.add( _eye.setLength( mouseOnBall.z ) );
+			if ( _this.noRoll ) {
 
-		return projection;
+				if ( length < Math.SQRT1_2 ) {
 
-	};
+					mouseOnBall.z = Math.sqrt( 1.0 - length*length );
+
+				} else {
+
+					mouseOnBall.z = .5 / length;
 
-	this.rotateCamera = function () {
+				}
 
-		var angle = Math.acos( _rotateStart.dot( _rotateEnd ) / _rotateStart.length() / _rotateEnd.length() );
+			} else if ( length > 1.0 ) {
 
-		if ( angle ) {
+				mouseOnBall.normalize();
 
-			var axis = ( new THREE.Vector3() ).crossVectors( _rotateStart, _rotateEnd ).normalize(),
-				quaternion = new THREE.Quaternion();
+			} else {
 
-			angle *= _this.rotateSpeed;
+				mouseOnBall.z = Math.sqrt( 1.0 - length * length );
 
-			quaternion.setFromAxisAngle( axis, -angle );
+			}
 
-			_eye.applyQuaternion( quaternion );
-			_this.object.up.applyQuaternion( quaternion );
+			_eye.copy( _this.object.position ).sub( _this.target );
 
-			_rotateEnd.applyQuaternion( quaternion );
+			vector.copy( _this.object.up ).setLength( mouseOnBall.y )
+			vector.add( objectUp.copy( _this.object.up ).cross( _eye ).setLength( mouseOnBall.x ) );
+			vector.add( _eye.setLength( mouseOnBall.z ) );
 
-			if ( _this.staticMoving ) {
+			return vector;
 
-				_rotateStart.copy( _rotateEnd );
+ 		};
+ 
+	}() );
 
-			} else {
+	this.rotateCamera = (function(){
 
-				quaternion.setFromAxisAngle( axis, angle * ( _this.dynamicDampingFactor - 1.0 ) );
-				_rotateStart.applyQuaternion( quaternion );
+		var axis = new THREE.Vector3(),
+			quaternion = new THREE.Quaternion();
 
-			}
 
+		return function () {
+
+			var angle = Math.acos( _rotateStart.dot( _rotateEnd ) / _rotateStart.length() / _rotateEnd.length() );
+
+			if ( angle ) {
+
+				axis.crossVectors( _rotateStart, _rotateEnd ).normalize();
+
+				angle *= _this.rotateSpeed;
+
+				quaternion.setFromAxisAngle( axis, -angle );
+
+				_eye.applyQuaternion( quaternion );
+				_this.object.up.applyQuaternion( quaternion );
+
+				_rotateEnd.applyQuaternion( quaternion );
+
+				if ( _this.staticMoving ) {
+
+					_rotateStart.copy( _rotateEnd );
+
+				} else {
+
+					quaternion.setFromAxisAngle( axis, angle * ( _this.dynamicDampingFactor - 1.0 ) );
+					_rotateStart.applyQuaternion( quaternion );
+
+				}
+
+			}
 		}
 
-	};
+	}());
 
 	this.zoomCamera = function () {
 
-		if ( _state === STATE.TOUCH_ZOOM ) {
+		if ( _state === STATE.TOUCH_ZOOM_PAN ) {
 
 			var factor = _touchZoomDistanceStart / _touchZoomDistanceEnd;
 			_touchZoomDistanceStart = _touchZoomDistanceEnd;
@@ -209,33 +257,40 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 	};
 
-	this.panCamera = function () {
+	this.panCamera = (function(){
 
-		var mouseChange = _panEnd.clone().sub( _panStart );
+		var mouseChange = new THREE.Vector2(),
+			objectUp = new THREE.Vector3(),
+			pan = new THREE.Vector3();
 
-		if ( mouseChange.lengthSq() ) {
+		return function () {
 
-			mouseChange.multiplyScalar( _eye.length() * _this.panSpeed );
+			mouseChange.copy( _panEnd ).sub( _panStart );
 
-			var pan = _eye.clone().cross( _this.object.up ).setLength( mouseChange.x );
-			pan.add( _this.object.up.clone().setLength( mouseChange.y ) );
+			if ( mouseChange.lengthSq() ) {
 
-			_this.object.position.add( pan );
-			_this.target.add( pan );
+				mouseChange.multiplyScalar( _eye.length() * _this.panSpeed );
 
-			if ( _this.staticMoving ) {
+				pan.copy( _eye ).cross( _this.object.up ).setLength( mouseChange.x );
+				pan.add( objectUp.copy( _this.object.up ).setLength( mouseChange.y ) );
 
-				_panStart = _panEnd;
+				_this.object.position.add( pan );
+				_this.target.add( pan );
 
-			} else {
+				if ( _this.staticMoving ) {
 
-				_panStart.add( mouseChange.subVectors( _panEnd, _panStart ).multiplyScalar( _this.dynamicDampingFactor ) );
+					_panStart.copy( _panEnd );
 
-			}
+				} else {
 
+					_panStart.add( mouseChange.subVectors( _panEnd, _panStart ).multiplyScalar( _this.dynamicDampingFactor ) );
+
+				}
+
+			}
 		}
 
-	};
+	}());
 
 	this.update = function () {
 
@@ -264,7 +319,7 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 		_this.object.lookAt( _this.target );
 
-		if ( lastPosition.distanceToSquared( _this.object.position ) > 0 ) {
+		if ( lastPosition.distanceToSquared( _this.object.position ) > EPS ) {
 
 			_this.dispatchEvent( changeEvent );
 
@@ -353,21 +408,26 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 		if ( _state === STATE.ROTATE && !_this.noRotate ) {
 
-			_rotateStart = _rotateEnd = _this.getMouseProjectionOnBall( event.clientX, event.clientY );
+			_rotateStart.copy( getMouseProjectionOnBall( event.pageX, event.pageY ) );
+			_rotateEnd.copy( _rotateStart );
 
 		} else if ( _state === STATE.ZOOM && !_this.noZoom ) {
 
-			_zoomStart = _zoomEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
+			_zoomStart.copy( getMouseOnScreen( event.pageX, event.pageY ) );
+			_zoomEnd.copy(_zoomStart);
 
 		} else if ( _state === STATE.PAN && !_this.noPan ) {
 
-			_panStart = _panEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
+			_panStart.copy( getMouseOnScreen( event.pageX, event.pageY ) );
+			_panEnd.copy(_panStart)
 
 		}
 
 		document.addEventListener( 'mousemove', mousemove, false );
 		document.addEventListener( 'mouseup', mouseup, false );
 
+		_this.dispatchEvent( startEvent );
+
 	}
 
 	function mousemove( event ) {
@@ -379,15 +439,15 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 		if ( _state === STATE.ROTATE && !_this.noRotate ) {
 
-			_rotateEnd = _this.getMouseProjectionOnBall( event.clientX, event.clientY );
+			_rotateEnd.copy( getMouseProjectionOnBall( event.pageX, event.pageY ) );
 
 		} else if ( _state === STATE.ZOOM && !_this.noZoom ) {
 
-			_zoomEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
+			_zoomEnd.copy( getMouseOnScreen( event.pageX, event.pageY ) );
 
 		} else if ( _state === STATE.PAN && !_this.noPan ) {
 
-			_panEnd = _this.getMouseOnScreen( event.clientX, event.clientY );
+			_panEnd.copy( getMouseOnScreen( event.pageX, event.pageY ) );
 
 		}
 
@@ -404,6 +464,7 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 		document.removeEventListener( 'mousemove', mousemove );
 		document.removeEventListener( 'mouseup', mouseup );
+		_this.dispatchEvent( endEvent );
 
 	}
 
@@ -427,6 +488,8 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 		}
 
 		_zoomStart.y += delta * 0.01;
+		_this.dispatchEvent( startEvent );
+		_this.dispatchEvent( endEvent );
 
 	}
 
@@ -438,25 +501,27 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 			case 1:
 				_state = STATE.TOUCH_ROTATE;
-				_rotateStart = _rotateEnd = _this.getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+				_rotateStart.copy( getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ) );
+				_rotateEnd.copy( _rotateStart );
 				break;
 
 			case 2:
-				_state = STATE.TOUCH_ZOOM;
+				_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 );
-				break;
 
-			case 3:
-				_state = STATE.TOUCH_PAN;
-				_panStart = _panEnd = _this.getMouseOnScreen( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+				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 );
 
 	}
 
@@ -470,17 +535,17 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 		switch ( event.touches.length ) {
 
 			case 1:
-				_rotateEnd = _this.getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+				_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 )
-				break;
+				_touchZoomDistanceEnd = Math.sqrt( dx * dx + dy * dy );
 
-			case 3:
-				_panEnd = _this.getMouseOnScreen( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+				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:
@@ -497,20 +562,23 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 		switch ( event.touches.length ) {
 
 			case 1:
-				_rotateStart = _rotateEnd = _this.getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+				_rotateEnd.copy( getMouseProjectionOnBall( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY ) );
+				_rotateStart.copy( _rotateEnd );
 				break;
 
 			case 2:
 				_touchZoomDistanceStart = _touchZoomDistanceEnd = 0;
-				break;
 
-			case 3:
-				_panStart = _panEnd = _this.getMouseOnScreen( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+				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 );
 
 	}
 
@@ -530,6 +598,9 @@ THREE.OrthographicTrackballControls = function ( object, domElement ) {
 
 	this.handleResize();
 
+	// force an update at start
+	this.update();
+
 };
 
 THREE.OrthographicTrackballControls.prototype = Object.create( THREE.EventDispatcher.prototype );