I just finished my line-triangle collision detection and since I know have to know the world coordinates of every vertex of every one of my several thousand triangles in my game I was wondering if there is a fast way to do this, right now I am using my own rotation function in which I pass it a point and the x,y,z rotation and it gives me the rotated point location but there should be a faster way to do this using OpenGL. I just wanted to see if there is one before going ahead with the rest of my program. Thanks, -David

Custom rotation function is a good idea, because you know real-coordinates post-rotation without even thinking about it. As for collision testing, bounding spheres/boxes are a great way to speed things up. see psudo-code below

if object1.bound is near object2.bound:
loop(x, 0 to object1.polycount):
loop(y, 0 to object2.polycount)
if object1.poly[x] is touching object2.poly[y] then
declare_collision(object1, object2)
end if
end loop
end loop
end if

this cuts testing down by a huge amount if you have high polycount objects.

-Alex