There's even support for smoothing polygons using picture
comments, which might be handy for simulating bezier paths.
Quickdraw pic comment based smooth polygons are cubics, and bezier
paths are quadratic curves, and converting from one to the other is
non-trivial (for any sort of decent quality).
I think you got that the wrong way round. QuickDraw's PolySmooth
picture comment uses quadratic curves; NSBezierPath provides a cubic
primitive. (Plainly you knew what you meant, since converting
quadratic curves to cubics is easy... it's the other way that
requires piecewise approximation.)
