Author:  DigiBen

In this tutorial we explain what a "normal" is and the math behind calculating them.  Math topics include the cross product, magnitude and normalizing of vectors.  Normals are used for many things, lighting and collision for example.

Functions Used:  glViewport(), glMatrixMode(), glLoadIdentity(), gluPerspective(), glClear(), gluLookAt(), glBegin(), glEnd(), SwapBuffers()