Just purchased my V2 :) +Spiro Curves
From:
unclecharlie
15 Oct 2010 (5 of 14)
3809.5
I don't know if it is the same source code but these curves look like Bezier curves in Blender. I'm pretty sure they are limited to 2d planar drawing then extruded or swept into the third dimension.
http://wiki.blender.org/index.php/Doc:Manual/Modeling/Curves
ch