g.drawPoly/fillPoly have a limit of 64 nodes

Hit that limit a while ago... if your algorithm can handle a detection and cut-up in multiple 'touching' polys / segments, it is easy to live with the limitation.

I had build a circular multi dial... and on a certain size with close to 360 degrees and expectation of decent smoothness of the 'bent bar'/bow, you run quickly into the limit. Luckily for me, I calculate max 30 points of a segment, note the angel and finish calculating the rest of the segment, draw it, and move on to the next segment until the desired angle is covered. Somewhere in the (difficult to search) forum you can find the code...