v@flatnrm = @N; @flatnrm.y = 0; @flatnrm = normalize(@flatnrm); v@right = cross({0,1,0}, @flatnrm); v@up = cross(@N, @right);
v@flatnrm = @N; @flatnrm.y = 0; @flatnrm = normalize(@flatnrm); v@right = cross({0,1,0}, @flatnrm); v@up = cross(@N, @right);