huge overhead, since I have to manage "visible"-state for each sphere primitive and management of the states is a real pain! And building a complete scene tree for each frame is impossible! In OpenGL I can do per frame (immediate mode) what I want to draw! Any ideas how I could do that with Java3D??? I think no!
Sure. Use the RenderingAttribute class and call setVisible(). Only call it on objects that have changed state this frame.
So far from your comments, you are appearing to be extremely ignorant about what scene graphs are and how they function in general. I suggest you do a heap more reading first before you claim anything more about what j3D can and cannot do. Other very salient points you seem to have completely ignored are things like culling, multipipe rendering, state sorting inbuilt picking and many many more features that would take you hundreds of hours to implement if you were to start from scratch.
Fine, but there are still important functions missing. Can you access any buffers in Java3D? I think no!
Yes. The only one currently not available is the Stencil Buffer.
-- Justin Couch http://www.vlc.com.au/~justin/ Java Architect & Bit Twiddler http://www.yumetech.com/ Author, Java 3D FAQ Maintainer http://www.j3d.org/ ------------------------------------------------------------------- "Humanism is dead. Animals think, feel; so do machines now. Neither man nor woman is the measure of all things. Every organism processes data according to its domain, its environment; you, with all your brains, would be useless in a mouse's universe..." - Greg Bear, Slant -------------------------------------------------------------------
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