Mesh Split Fails SOMETIMES - Help

Grasshopper
1

Hello everyone!

I am trying to split a mesh that is generated in Grasshopper to get the part of the mesh that is inside a given Box.

My algorithm works with some inputs of the sliders - but not with all. I cannot understand why!

Please check the attached grasshopper file and play with sliders A and B.MeshSplitQuestion.gh (12.1 KB)

Results with A = 10 and B = 7. The split works.

image
image1360Ă—735 139 KB

Result with A = 10 and B = 6. The split fails.

image
image1919Ă—1037 273 KB

Could this be a double precision problem?

I really need help with this one!

Thank you!

2

For me both configurations work. What did you expect to get from A=10 and B=6 , that you could not get? (P.S) I agree with you there that the mesh split some times does not work but in more complex cases. Not the one as you are working with.

1
11091Ă—610 113 KB
2
21088Ă—632 116 KB

3

Hello,

I’m using Rhino 7. Which version are you using?

Thanks!

4

Thanks to @mahanmotamedi1991, I installed version 6.32.20340.21001 and it works as intended.
I’ll report this as a bug.

5

Hi @scudelari,

I’ve logged the issue.

https://mcneel.myjetbrains.com/youtrack/issue/RH-62159

Thanks for reporting.

– Dale

6

Hi @scudelari

thank you for this report! I can see that the 10-6 case is working in Rhino 7 SR3 (and likely SR2). In SR1, I can confirm that a lot fewer splits were working.

In order to use 7 SR2, you can just set the Update Frequency to “Service Release Candidate”, inside Tools -> Options… -> Update And Statistics.

Do you think you could also check there and tell me if it’s working better for this case?
Thank you!

Giulio

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

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