Newbie Cinema 4D to OpenGL

Just starting to use OpenGL.
I have created models using Cinema 4D on the Mac.
Anyway that I can use these models in my Objective C code?

If You know the model file structure then You can load and render it. It’s no problem.


Hmm, I am a bit too much of a newbie to know whether I know or where to look if I don’t.
I can save it in a number of formats such as DXF. Are there conversion routines out there somewhere?