I need to render some objects using a special projection, that is a like ortho in the x direction and like perspective in the y direction.
I’ve been looking for the math behind this issue, and I finally arrived to this page
which gives a nice introduction.
I thought it would be easy to come up with the matrix I need, but I was wrong. The equations used to derive each matrix (ortho an persperctive) differ in the w coordinate, so I can’t figure out how to mix them.
Can anyone give me some insight on this, or suggest o book or link where to look?
Thanks a lot