Hi.
Im new to 3D programming/math and i can't really understand gluPerspective
I mean how do I know based on the parameters
what the coordinates at the far right, left, top, bottom will be it seems like I have no control, I tried to use glFrustum instead but when I created an object at the specified far right it ended up halfway there

i know this must sound stupid but i got no clue on how this works

thanks in advance