In some cases I need to find the barycentric cords at a ray/triangle intersection in a static mesh. I found this thread which was very helpful
http://newtondynamics.com/forum/viewtopic.php?f=9&t=6868&p=47617&hilit=barycentric#p47608
But after building the collision tree and setting the NewtonTreeCollisionSetUserRayCastCallback (), that callback never gets called after any calls to NewtonWorldRayCast() with rays that I'm sure intersect the mesh I'm making these ray trace calls when the engine is not updating, could that be the problem?
-Bird