Hello everyone! First post! I have been playing around with bablyon (you can guess, I am not a pro graphics programmer) and the first issue I bumped into is: is there a simple way to get the normal of a surface? If not, I was thinking on using the following to calculate the normal of a plane. P---Q| |R---TTake (P-T) × (Q-R). Basically have the cross product of the plane's diagonals. Is it at all a good solution? Is there a better or simpler way to do this? Thanks