Cooooool. Are you also uploading the files themselves so we can see how they're built? Again, thank you.

I can understand having a million things to do. I'll be very grateful if you do it tomorrow, though. Thanks in advance.

Cyber, I appreciate any help you might give me. But only if you give it. :-)

What if you sent us the non-simplified version of your program?

I've e-mailed him to that address on his profile. Has he been around?

Also the head-tracking is generally emulated as the mouse cursor, so any game whose camera turns by moving the mouse would track normally on the headset.

Thanks a lot, Egon. I can't wait to try it out.

I hate to sound clueless, but I've been assuming the vertex data is given in world space. Is that what it does? Would testing vertex for vertex whether it's inside another mesh work (however slow)? What I hoped the VertexController did was first of all to give me world-space vertices, then for the updateMeshData() method to update those vertices including any translations that may have been applied to the model. Now I'm confused. Are we on the same page?  :-) Again, thanks for all your hard work, Egon.