I want to do some collision detection in a graphics engine … Before using OpenGL I would do the transformations and rotations myself and then use the new coordinates to check for plane - point intersections. With OpenGL I use the glRotate and glTranslate functions and can’t figure out how to get the desired transformed coordinates to do my collision detection… Any help would be greatly appreciated…
You’ll need to do your own transforms in parallel. Don’t try and retrieve concatenated matrices using glGet - people keep on asking about this, and it’s terrible for performance.