void PreSolveInternal(IntPtr contact, Manifold oldManifold) { PreSolve(Contact.FromPtr(contact), oldManifold); }
void BeginContactInternal(IntPtr contact) { BeginContact(Contact.FromPtr(contact)); }
void EndContactInternal(IntPtr contact) { EndContact(Contact.FromPtr(contact)); }
void PostSolveInternal(IntPtr contact, ContactImpulse impulse) { PostSolve(Contact.FromPtr(contact), impulse); }