piped polyline issue, stumped

I'm having an (highlighted) issue with the start / end point of a piped closed polyline. See image. My attempt to fix that by creating a new start end point (blue x) in the midpoint of the first polyline segment gives me erratic behavior. See GH file with the two sets of polyline vertices (new and original). I'm lost what is going on here.

Results with the new vertices: either all vertices now have the highlighted problem or entire polyline segments go missing.

Could it be pipe does not like the torsion ?

Any help would be greatly apriciated!

Attachments:

pipe test.gh, 11 KB

Replies to This Discussion

Permalink Reply by Armin Seltz on March 4, 2015 at 10:53am

Hmm strange that. I just had a little play and it seems its a bug in Rhino and not GH, as it does the same thing if you pipe a 3-dimensional polyline in Rhino.

So I made a little workaround, you pipe it twice, once with the start-point offset by 2 points. Then you can combine parts of both solutions to end up with one nicely piped end result :)

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