Heartlining, without AHG

Given I'm using the holiest of holies, a Mac, AHG doesn't work. I've tried doing it by hand, and I can just about approximate it, but it's pretty jerky, and there is no smoothness to the track whatsoever.

Is there an algorithm to generate a smooth simple heartline roll that I can use to input the points that I could write up in matlab?

I would consult Buster, or Redunleizer ( Creater of Purg ) ( If he is a Member on here )

They both have plenty of math and computer knowlege, I know that Buster is a member on here.