Nick April 28, 2005, 09:20 AM 

Just think about what a change in coordinate system really is. Imagine, or draw, a right handed coordinate system. Now flip the xaxis. What does this do to the coordinates? All xcomponents are negated. What happens when you swap x and yaxis? X and ycomponents are swapped.
So all you have to do is draw the two coordinate systems and look at how the coordiantes are transformed from the one space to the other. Most probably it's a y/z swap and y negation. This can be expressed in a 'base' matrix:
[1 0 0] [0 0 1] [0 1 0]
Depending on where the original coordinates are defined, you have to multiply your model or camera matrix with this base matrix. Beware of pre/postmultiplication and row/columnmajor matrix format.
