I started to change the visualization in my tool from 2D to 3D. Until now
I worked with GEF and now I'm using GEF3D. My impression: It works much
better and is much easier to use than I thought. :-)
What I did not find out yet: When I create planes I can only position them
one over another. Does GEF3D support rotation of planes? If it does, how
does that work?