MN-lamp-shade

(Also posted in the Curved Folding Network http://www.curvedfolding.com/)
I made this test in august 2008 and it's probably my only test until now with curved folding (converted from .wrm). All surfaces bend in a "cylindrical" fashion so it's quite basic.
It's mimicking a lamp shade that I saw somewhere.
Looking at the definition now it seems so complex for achieving something rather simple! There must be a much easier way to do this even without scripting.

Download definition:
http://www.omkrets.se/grasshopper/MN-lamp-shade_2008-08-20.zip