Nice work Wayne.

With a quick look, it appears that sqfactor and tau are both being used. But this is OKAY (at first I thought that it was not okay).

In notepad++ Ctrl+h helps with replacing one name with another, for myself.

 - Brian

Looking forward to your lofted versions.

I like initial tau = 0.5, the halfway shape between circle and square.
But after seeing numpoints = 1, maybe multiprocess is better with initial tau of 1?
I dislike numpoints = 1 as default(???)

Changing colors seemed to be a problem? Seems to be a need to unlink output curve to get colors to change? Maybe this is normal general behavior?