New cyli, cylo and ring primitives.

[Magnus Forsberg]

If they're doing it for performance reasons, then they are misguided, since the matrix math is exactly the same with or without the rotation. I agree with Philo, though, that there are just two many possible ways to rotate things, and so we should completely avoid rotated primitives.

But if an author is rounding of the values of a rotated primitive in his design, it will introduce a miscalculation, and cause thin, hairline gaps. Right?