3D Graphics Modelling and Rendering mini-HOWTO
So the graphics library, then, can be thought of as the low-level graphics primatives used to build more complex objects (spheres, boxes, complex polygons, etc.). Those complex objects are then used to build even more complicated shapes and figures.
The graphics library installed was the freeware implementation of OpenGL called Mesa.
2.2. The Graphics Modeller
Since the graphics renderer is, ideally, completely hidden from the end-user, we'll deal with that last (besides which, modelling is the next logical step in keeping with my house-building analogy). However, when it comes to the actual i