/* Note Well

  Functions that use any OpenGL data types have 

  to have the proper include statements preceding them

  to compile without errors. Complete programs have the

  necessary includes, standalone functions do not.

  On MS Windows operating system this usually requires

  at least the following: */



#include <windows.h>

#include <GL\GL.h>





/* additional undefined data structures may be found

in code in appendix3.cpp, cutting and pasting is one 

option. Some structures are defined in the book's text

outside of programs in figures such as GLintPoint on

page 49. This is in the headerfiles subdirectory

Some undefined data structures may have to be fleshed

out by the student. Some may be found in other libraries

such as glut.h or Glu.h

*/