Editor: added uniform scaling option.

Not sure about the exact details of the behavior or UI, but something like this is sorely needed when dealing with imported models.

editor/js/ui/Sidebar.Properties.Object3D.js

@@ -56,15 +56,25 @@ Sidebar.Properties.Object3D = function ( signals ) {
 	// scale
 
 	var objectScaleRow = new UI.Panel();
-	var objectScaleX = new UI.Number( 'absolute' ).setValue( 1 ).setLeft( '100px' ).setWidth( '50px' ).onChange( update );
-	var objectScaleY = new UI.Number( 'absolute' ).setValue( 1 ).setLeft( '160px' ).setWidth( '50px' ).onChange( update );
-	var objectScaleZ = new UI.Number( 'absolute' ).setValue( 1 ).setLeft( '220px' ).setWidth( '50px' ).onChange( update );
+	var objectScaleX = new UI.Number( 'absolute' ).setValue( 1 ).setLeft( '100px' ).setWidth( '50px' ).onChange( updateScaleX );
+	var objectScaleY = new UI.Number( 'absolute' ).setValue( 1 ).setLeft( '160px' ).setWidth( '50px' ).onChange( updateScaleY );
+	var objectScaleZ = new UI.Number( 'absolute' ).setValue( 1 ).setLeft( '220px' ).setWidth( '50px' ).onChange( updateScaleZ );
 
 	objectScaleRow.add( new UI.Text().setValue( 'Scale' ).setColor( '#666' ) );
 	objectScaleRow.add( objectScaleX, objectScaleY, objectScaleZ );
 
 	container.add( objectScaleRow );
 
+	// uniform scale lock
+
+	var objectScaleLockRow = new UI.Panel();
+	var objectScaleLock = new UI.Checkbox( 'absolute' ).setLeft( '100px' ).onChange( update );
+
+	objectScaleLockRow.add( new UI.Text().setValue( 'Uniform scale' ).setColor( '#666' ) );
+	objectScaleLockRow.add( objectScaleLock );
+
+	container.add( objectScaleLockRow );
+
 	// visible
 
 	var objectVisibleRow = new UI.Panel();
@@ -75,7 +85,6 @@ Sidebar.Properties.Object3D = function ( signals ) {
 
 	container.add( objectVisibleRow );
 
-
 	// fov
 
 	var objectFovRow = new UI.Panel();
@@ -111,6 +120,29 @@ Sidebar.Properties.Object3D = function ( signals ) {
 
 	var selected = null;
 
+	var uniformScale = 1;
+
+	function updateScaleX() {
+
+		uniformScale = objectScaleX.getValue();
+		update();
+
+	}
+
+	function updateScaleY() {
+
+		uniformScale = objectScaleY.getValue();
+		update();
+
+	}
+
+	function updateScaleZ() {
+
+		uniformScale = objectScaleZ.getValue();
+		update();
+
+	}
+
 	function update() {
 
 		if ( selected ) {
@@ -125,6 +157,14 @@ Sidebar.Properties.Object3D = function ( signals ) {
 			selected.rotation.y = objectRotationY.getValue();
 			selected.rotation.z = objectRotationZ.getValue();
 
+			if ( objectScaleLock.getValue() ) {
+
+				objectScaleX.setValue( uniformScale );
+				objectScaleY.setValue( uniformScale );
+				objectScaleZ.setValue( uniformScale );
+
+			}
+
 			selected.scale.x = objectScaleX.getValue();
 			selected.scale.y = objectScaleY.getValue();
 			selected.scale.z = objectScaleZ.getValue();