Remove Triangles

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Permalink Reply by Joseph Oster on May 16, 2017 at 10:57am

Attachments:

• RemoveTriangles_2017May16a.gh, 13 KB

Permalink Reply by Joseph Oster on May 16, 2017 at 12:13pm

P.S.  You could, and probably should, automatically remove sub-surfaces that are not triangles (have more than three edges or vertices).  Sometimes only a tiny bit is clipped so area is nearly the same, but with four or more edges/vertices, it would be filtered out in any case as a partial.

Permalink Reply by Joseph Oster on May 16, 2017 at 12:53pm

Blue group filters triangles - surfaces with exactly three vertices (edges).  All others are ignored.

Green group then the filters remaining triangles by 'Area':

Attachments:

• RemoveTriangles_2017May16b.gh, 17 KB

Permalink Reply by Joseph Oster on May 16, 2017 at 5:54pm

Amusing enhancements to the test bench; ability to rotate the clipping polygon and change its radius, with a two second delay ('Data Dam') before the slow clipping and surface splitting operations, which get VERY LONG as the radius goes up!  But that's data prep in this case, yours are already clipped (and split?), so you'll want only the blue and green groups from this to test surface sections.

Attachments:

• RemoveTriangles_2017May16c.gh, 20 KB

Permalink Reply by James Chadud on May 17, 2017 at 11:03am

It worked, Thanks a lot!!

Permalink Reply by Joseph Oster on May 17, 2017 at 12:01pm

Good.  One more purely cosmetic embellishment - color gradient applied to sub-surface pieces (triangles) based on their area, changing to all green when remaining pieces are within 0.01.  Helps quite a bit in refining 'Min Area' slider position. 

Attachments:

• RemoveTriangles_2017May16d.gh, 22 KB