Dear ginza parametric models help

I have some homework, Subject about the Dear Ginza building Tokyo. Required slight feeling of strangeness like this facede.

I absorption this http://www.grasshopper3d.com/forum/topics/creating-low-res-polygons... example, I wish I could get take control for more in the facede. The results are not very satisfactory. :(

Please help me. (PS: Sorry about my english)

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