Can anyone give help on this issue

Dear OpenGL expert:

I wonder anyone who know how to use the OpenGL to develop the Solid Modeling Program (or something can be used for CAM simulator)? I search the forums, but some experts say there are lot of works have to be built on top of OpenGL, but I never found what are the works needed! Does anyone know the tutorial/web info which show the secrets? Or is there any public code/library available for the Solid Modeling related programming?

Thanks for any suggestions.

Here are a couple of links that should help you: