I’ve added a better way to traverse the scenegraph. The Node and Group classes now have a method called traverse(TraversalListener). It traverses the scenegraph directly without the need of a utility class. This should be a bit faster. And if you don’t want to make several instanceof calls and you know which Node subtype to work on in the traversal, you can use the DetailedTraversalListener. Have a look at it and enjoy 
Marvin
EDIT: Ooops. Just forgot to commit. Now it is