mouseout use the same listener as mouseup events.

examples/js/controls/OrbitControls.js

@@ -412,7 +412,7 @@ THREE.OrbitControls = function ( object, domElement ) {
 		if ( state !== STATE.NONE ) {
 			document.addEventListener( 'mousemove', onMouseMove, false );
 			document.addEventListener( 'mouseup', onMouseUp, false );
-			document.addEventListener( 'mouseout', onMouseOut, false );
+			document.addEventListener( 'mouseout', onMouseUp, false );
 			scope.dispatchEvent( startEvent );
 		}
 
@@ -483,19 +483,7 @@ THREE.OrbitControls = function ( object, domElement ) {
 
 		document.removeEventListener( 'mousemove', onMouseMove, false );
 		document.removeEventListener( 'mouseup', onMouseUp, false );
-		document.removeEventListener( 'mouseout', onMouseOut, false );
-		scope.dispatchEvent( endEvent );
-		state = STATE.NONE;
-
-	}
-
-	function onMouseOut( /* event */ ) {
-
-		if ( scope.enabled === false ) return;
-
-		document.removeEventListener( 'mousemove', onMouseMove, false );
-		document.removeEventListener( 'mouseup', onMouseUp, false );
-		document.removeEventListener( 'mouseout', onMouseOut, false );
+		document.removeEventListener( 'mouseout', onMouseUp, false );
 		scope.dispatchEvent( endEvent );
 		state = STATE.NONE;
 
@@ -719,7 +707,7 @@ THREE.OrbitControls = function ( object, domElement ) {
 
 		document.removeEventListener( 'mousemove', onMouseMove, false );
 		document.removeEventListener( 'mouseup', onMouseUp, false );
-		document.removeEventListener( 'mouseout', onMouseOut, false );
+		document.removeEventListener( 'mouseout', onMouseUp, false );
 
 		window.removeEventListener( 'keydown', onKeyDown, false );