Doubled loft

Hi,

I have a problem with lofting polygons along edges in wireframes. Often it seems like polygon was lofted twice, but second rotated by 180 deg (see picture example). I also add example in grasshopper, it is with voronoi, nevertheless it happens to any other mesh. I tried to use Tolopogizer with no effect. Anyone knows how to overcome it?

Attachments:

example.png, 7 KB
example.gh, 7 KB

Replies to This Discussion

Permalink Reply by Joseph Oster on May 24, 2017 at 5:52am

Adjacent Voronoi cells do not share edge curves, even though they appear that way. So you are getting multiple 'Loft' results because there are really multiple edge curves that have end points in common.

Permalink Reply by Joseph Oster on May 24, 2017 at 6:05am

Here is an effort to remove the duplicate edge curves by using a set to find their unique mid-points:

Attachments:

DoubledLoft_2017May24a.gh, 6 KB

Permalink Reply by Konrad G on May 24, 2017 at 11:01am

Thanks a lot! However Topologizer should be able to remove double curves anyway and I'm wondering why it didn't work for me.

Permalink Reply by Joseph Oster on May 24, 2017 at 11:20am

I wouldn't know - unless you didn't 'Flatten' the list of edges you gave it?

Permalink Reply by Michael Pryor on May 24, 2017 at 11:41am

Seems with sets you remove some that shouldn't remove. There is a native cull duplicates component that gives index.

Permalink Reply by Joseph Oster on May 24, 2017 at 11:56am

Excellent! Must right-click 'CullPt' and set 'Leave One'. I wonder why the different results?

Thanks.

Permalink Reply by Konrad G on May 26, 2017 at 1:43am

Thank you for response! I also found out why topologizer didn't work for me. It removes close vertices to clean wireframe, but not doubled edges from the same vertices.

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