For illustrating some properties of perspective I want to place the 
viewing plane at a given distance from the camera. I think this has to 
do with the direction vector, but also with the right vector.
If I put a perspective camera at a point <a,b,c> viewing in the 
direction <0,0,1> how can I determine the combination of the right and 
the direction vector to obtain the viewing plane, parallel to the 
(X,Z)-plane at a distance d from the camera in the direction determined 
by <0,0,1>?

Post a reply to this message