created: 08/15/00; revised: 10/28/00, 07/27/03, 07/25/09
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.
How many 2D pictures can be produced from one 3D model?