I discussed isometric
vs. perspective views
in the previous chapter. Now you will develop a transformation that will automatically produce a perspective view. It operates much like a camera where rays are traced from the various points that comprise an object onto a plane that you might think of as a film plane. Figure 4-1
shows the geometry. Itâs a three-dimensional box in the x,y,z space. The x,y plane represents the film plane. Thereâs also a focal point
that is outside the x,y,z space in front of the x,y plane. Rays are traced from the boxâs corners to the focal point. By connecting ...