Rhino 8 bug

Serengeti (Rhino WIP)
1

I have a closed polysurface modeling that seems ok, but when meshing it goes wrong.
Are you interested to get the 3DM file ?
Rhino 8.2.23325.14001, 2023-11-21 on Windows.

ViewCapture20231128_161415
ViewCapture20231128_1614151372×796 93.3 KB

ViewCapture20231128_161504
ViewCapture20231128_1615041372×796 135 KB

2

Is your object very far from the World origin? This can affect meshing.

3

No, model is near origin.
I exploded the solid and mesh the surface alone: same pb.

ViewCapture20231128_164958
ViewCapture20231128_1649581372×796 92 KB

4

Guess we’ll need to see the model then… (or at least a part of it that shows the problem).

5

surface.3dm (110.2 KB)

6

I delete and reconstruct the affected surface so it is ok now.
This model was entirely done in Rhino 7~8. I don’t know what could have happened…

7

What are your mesh settings? Seems to mesh OK here with Jagged and Faster or Smooth and Slower.

image
image1890×1040 107 KB

8

My bad…
I used custom settings with aspect ratio limited to 6 and without the “simple planes”.

9

screenCapt
screenCapt1484×743 118 KB

10

Yep, I see that, that’s a good bug, only the combination of simple planes unchecked and a nonzero aspect ratio causes it. Will get a bug track item going for this, thanks for reporting!

Note, I see the same thing happening in V7!

https://mcneel.myjetbrains.com/youtrack/issue/RH-78658/Mesh-settings-combination-produces-incorrect-results-with-this-file

11

Any news about this bug?
Always there in Rhino 8.5.24051.15001, 2024-02-20

The bug appear also appear when simple planes is unchecked and a nonzero MAXIMUM EDGE LENGTH.