/* notes:
* the (very little) required math is found here: http://www.gamasutra.com/view/feature/131848/tessellation_of_4x4_bezier_patches_.php?print=1
* a much more optimized version is here, didn't bother to implement that: http://www.gamasutra.com/view/feature/131794/an_indepth_look_at_bicubic_bezier_.php?print=1
/* notes:
* the (very little) required math is found here: http://www.gamasutra.com/view/feature/131848/tessellation_of_4x4_bezier_patches_.php?print=1
* a much more optimized version is here, didn't bother to implement that: http://www.gamasutra.com/view/feature/131794/an_indepth_look_at_bicubic_bezier_.php?print=1