GH Mesh|Mesh Intersection unexpectedly closes this polyline

[wybrentencate]

Hey guys,

I got this bug when intersecting two meshes consisting of quadfaces:

For some reason it considers the intersection a closed curve. With more complicated meshes I sometimes get a zigzag pattern following the diagonals of some of the quadfaces the first mesh. When I triangulate the first mesh the problem disappears, sometimes.

Does anybody else get this bug? It seems to have appeared somewhere between Rhino 7.1 and Rhino 7.6…

MeshMeshBug.gh (249.9 KB)

[inno]

in Rhino 7.7.21131.13001, date 2021-05-11 they both are open curves

options → update and statistics → service release candidate

[piac (Giulio Piacentino)]

Hi @wybrentencate

and thank you @inno. I want to know more about this problem and will look at this more carefully in the next days.

I reported the bug at RH-64254.

Thanks,

Giulio

–
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com