This is a quick way to find the intersection of two line segments. I used: http://alienryderflex.com/intersect I mentioned this as an ingredient for a line drawn 3d (well, 2.5d) engine on the forums: http://scratch.mit.edu/forums/viewtopic.php?id=18378 (I do more work as AddZero http://scratch.mit.edu/users/AddZero ) 11/15/09 font page by The-Whiz. Thanks!