How to get isocrv on brep.

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Permalink Reply by David Rutten on December 17, 2012 at 1:35am

A Brep that consists of multiple surfaces (i.e. a polysurface) does not have a single UV space and therefore you cannot project a point onto a polysurface and get a single UV coordinate in return. You're going to have to either merge all your sub-surfaces into a single surface (can't be done in Grasshopper I think) or explode it and create the isocurves for each individual surface.

I suppose you couldn't get the effect you want by pulling the points along the top boundary onto the bottom boundary and connect those points?

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David Rutten

david@mcneel.com

Poprad, Slovakia