What''s the quickest way to test if a ray goes through a cube (or stops in the middle somewhere)? I was thinking ok just testing if the ray intersects one of the cube''s sides. Anything better? Thanks. Well, that was a waste of 2 minutes of my life. Now I have to code faster to get ''em back...

There''s code for this in Graphics Gems I (I think it''s in I). See this for source downloads.