[Plib-users] How to compute screen coordinates

[Corto M. <ma...@no...>]

Hi all=20

I want to compute the screen (pixels) coordinates in the viewport of a =
world 3d point.
How to do that ?
I know that gluProject can do that, but i want to know the formulas =
because my real objective is to estimate how much a vector visualy =
increase/decrease in pixel size when the camera move with a given speed =
vector in a known direction.
I need this to make some kind of a auto LOD simplication/refinement of a =
very complex surface. I can't do simple LOD switch because its visualy =
ugly and consume too much memory and/or time. So i need to do an =
incremental simplication/refinement of the mesh surface.

Thanks for help.

PS:
For Steve Baker : You've done a pretty great job with Plib. Bravo!

Malt.