created: 08/15/00; revised: 10/28/00, 07/27/03
As discussed in chapter one, 3D computer graphics consists of two activities: (1) Creating an imaginary world inside a computer, and (2) producing two dimensional images of that world from various viewpoints.
Producing a 2D image from a 3D image is an example of projection. This chapter discusses the fundamental notions of projection. The advanced topics are left for your graphics text book.