I don't think it's right but if it got as far as it did it could be corrected after several rewrites, so not a complete failure and not bad for a first attempt given the limited documentation I put on my web pages.

If I'm reading it correctly, polar is a function which is supposed to convert from polar to Cartesian coordinates, and rayPolygon seems to convert a list of polars to a list of Cartesians. But it's unclear exactly what it's doing. Also, there is no fillPolygon or fillEllipse.