Hi,

The perspective equations are:

x' = x - xu

y' = y - yu

z' = z - (z- z_{prp})u

I cant understand these equations. According to book

I cant understand how we get the above eq and how (0,0,zParameter u takes values from 0 to 1 and coordinate position (x', y', z') represents any point along the projection line. When u=0, we are at position P = (x, y, z). At the other end of the line u=1, and we have the projection reference point coordinates (0, 0, z_{prp})

_{prp}).

I got the following image from a web site:

Perspective Projection.jpg

Somebody plz guide me.

Zulfi.