I think it makes sense, since there is no way to know the Y-rotation when the vector is parallel to the up-vector. If you add a second parameter to the lookat function you can specify a different UP- vector.
/David
I think it makes sense, since there is no way to know the Y-rotation when the vector is parallel to the up-vector. If you add a second parameter to the lookat function you can specify a different UP- vector.
/David