This is the new refactored version of Bullet physics library version 2.x Questions? mail blender at erwincoumans.com, or check the bf-blender mailing list. Thanks, Erwin Apply patches/convex_hull.patch to add access to the convex hull operation, used in the BMesh convex hull operator. Documentation is available at: http://code.google.com/p/bullet/source/browse/trunk/Bullet_User_Manual.pdf and: https://github.com/bulletphysics/bullet3/tree/master/docs