Insulation hatch - unparallel lines

Hello,

I was wondering if any of you knew how to approach such problem - i need to draw insulation between two unparallel lines, unfortunately i don't know how to deal with the problem.

Here i found something simmilar for Revit: http://grevit.net/?p=2509

Here i found definition for paralleled lines http://www.grasshopper3d.com/profiles/blogs/insulation-hatch

I tried to modify it but i dont know how to get the lines right - these arent circles and straight lines anymore, have you got any ideas how to get such line?

Thank you for your time and help,

Have a nice day