Brep to mesh question

Grasshopper
1

Hello
Why the same brep when converted to a mesh its faces count and vertices count changes according the rotation or the position?

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image1768Ă—615 109 KB

meshes.gh (9.9 KB)

2

There’s tolerance and I’d assume meshing is done in XYZ coordinate space?

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image3233Ă—1505 418 KB

meshes.gh (37.2 KB)

3

F, MTV Count appears steady (in R5). See attached and modify it in order to accept Lists, rnd Trans options … etc etc.

BTW: get the rnd MV/MTV pts in a separate C# if you want to test stability of MV/MTV indexing (use TextDots to visualize the results).

MeshFromBrep_ForAmateurs_V1.gh (118.8 KB)

4

I test your script but i don’t see any difference.

5

Try using MeshingParameters other than Coarse.

Screen Shot 024
Screen Shot 0241813Ă—666 118 KB

6

Tri meshes have the same problem

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image1550Ă—691 125 KB

7

Anyway if you have just Boxes … use a proper C# (or the available RC Method) to get your stuff (yields always quad/tri Meshes with same V/F Count).

1 Like
8

Thanks but the boxes are just an example…

9

Did “some” tests more (say 50) using various Brep combos: under certain MeshParam values (and some Brep Topologies [notably with non planar Faces]) the V/F Count is stable. No MTV Indexing stability tests are performed, mind.

Anyway … indeed in some other cases … well … V/F Count varies (haven’t encountered that in my first tests using that %%#$ torus].

Clearly a matter of Karma (or tolerance or RC algorithm or whatever).

1 Like