internal static extern void dSpaceCollide2(dGeomID space1, dGeomID space2, IntPtr data, dNearCallback callback);
public extern static void dSpaceCollide2( dGeomID o1, dGeomID o2, IntPtr data, dNearCallback callback );
internal static extern void dSpaceCollide(dSpaceID space, IntPtr data, dNearCallback callback);
public extern static void dSpaceCollide( dSpaceID space, IntPtr data, dNearCallback callback );