An XNA Game Studio Library for handling Ray and moving Ellipsoid collisions with Triangles (Requires XNA Game Studio 3.1)
Support for multiple collision Sources which can come from XNA Models or any other source of Triangles
Uses OctTrees to efficiently query Triangle Sources for collisions
(Much of the collision code was ported from the Irrlicht Game Engine and has an Object Model Similar to that of the Irrlicht Engine)
Documentation