Maybe it’s too late…I simply want to flip that triangle 180’ so I can see it from behind. Now I’ve tried to add 180 to the rotations below (mpPsi+180 etc.)without success:
if i do that nothing is visible, probably drawn to far away.
if i only move glrotate before glbegin triangles are drawn randomly around (for loop but those x,y,z values do not change)
but anyway the rotations etc. are not done at all.