Help with a polygon modeling script

[oliver_3d]

Hello guys, I need to build a script that make round plygon selections like this: http://maxfoxlab.com/mx\_roundish.html. I would apreciate if anybody can help me out, or give me some tips to build it, either with python or mel. Thanks 

[maxim-ouellet]

https://vimeo.com/65246315

Apparently it has been removed it could had helped.
I have it but since It's removed, wont post