non planar region difference

Replies to This Discussion

Permalink Reply by Vicente Soler on December 20, 2010 at 8:05am

I don't think the region difference component is doing anything really. You are just extracting the surface edges.

One way to solve your problem is to unroll your cylindrical surface, by for example, creating a planar rectangle that has the same domain size as your cylinder, place the openings as flat rectangles over it and use the planarsrf component to generate a trimmed surface, then use the copytrim component to copy the trim into your cylindrical surface.

Another option is to use the surface split component directly on the 3d curves and curved surface.

Permalink Reply by paul piciorul on December 20, 2010 at 8:09am

yes, with region difference I only extract the edge component, then I need to make a planarsrf.

split component is very nice, but quite long.

I will try your unrolling solution.

thanks.

Permalink Reply by taz on December 20, 2010 at 1:23pm

This may be useful as a referance.  It uses a several of the ideas Vicente mentioned.

 

http://www.grasshopper3d.com/forum/topics/o14-building-help-plz