Using point attributes to trim a NURBS surface

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Hi all,

I've tried everything I can think of already, so if you have any ideas I'm all ready!

I've created a VOP SOP that analyzes the slope on a nurbs surface and stores it into point colors on that surface. Now how can I project curves based on the threshold of a given value?! I want to use these curves to cut the part of the slop that I don't care about… Or if there's another way to do it without projecting curves?!

I managed convert the nurbs to polygon and delete the required faces, but it's all jagged cause of the polygon mesh resolution (which I can't afford to make near-infinite).

Cheers

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