Added reset() to TrackballControls

examples/js/controls/TrackballControls.js

@@ -58,6 +58,12 @@ THREE.TrackballControls = function ( object, domElement ) {
 	_panStart = new THREE.Vector2(),
 	_panEnd = new THREE.Vector2();
 
+	// for reset
+
+	this.target0 = this.target.clone();
+	this.position0 = this.object.position.clone();
+	this.up0 = this.object.up.clone();
+
 	// events
 
 	var changeEvent = { type: 'change' };
@@ -277,6 +283,25 @@ THREE.TrackballControls = function ( object, domElement ) {
 
 	};
 
+	this.reset = function () {
+
+		_state = STATE.NONE;
+		_prevState = STATE.NONE;
+
+		_this.target.copy( _this.target0 );
+		_this.object.position.copy( _this.position0 );
+		_this.object.up.copy( _this.up0 );
+
+		_eye.subVectors( _this.object.position, _this.target );
+
+		_this.object.lookAt( _this.target );
+
+		//_this.dispatchEvent( changeEvent ); // not sure what this is for
+
+		lastPosition.copy( _this.object.position );
+
+	};
+
 	// listeners
 
 	function keydown( event ) {