Hi all, I'm currently using a piece of code document in this article: http://docs.google.com/gview?a=v&q=cache:vyOZ5vNOr3EJ:www.geometrictools.com/Documentation/DistancePoint3Triangle3.pdf+distance+triangle+point&hl=en&gl=uk To handle collisions on my game, it works correctly, I just want to get a better understanding of how it acctually works so I can acctually learn something! I have looked through myself and I get lost a little bit, can anyone help me understand it better? Thanks all.