Thank you Pappenheimer:
This helps me alot.
I don't like to use trigonometry, because in my case it is simply to slow. this vector calculation are more efficent.
I tried it with an extra vertex in my model, but the collision detection didn't like it.
Esper, I think Pappenheimers code is the best example. You only have to replace the Vector with an var[3] array.
I think it is wrong, because pan, tilt, roll are members of the "ANGLE" struct and not the "VECTOR" struct.

It'll work fine, since ANGLE and VECTOR structs both contain three vars VECTOR functions can use ANGLEs and vice-versa.

Jibb

I'm glad that I could help!