[JAVA3D] transparent Canvas3D

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hi there, i wonder, whether it is possible to create a canvas3D which is transparent, for creatinge an application, where a character can walk around in over other components....   the special case: at my university they are working on a project with an animated gif character in a JPanel, and they are thinking of exchanging their character with a 3D one, so i need to know if s.th. like that is possible in Java3D..     thanks a lot for answering Michael Nischt