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process=True changes vertices order

See original GitHub issue

Hi,

Thanks for the great library.

I’m having a question about the process parameter in trimesh.Trimesh. When it is set to true, and validate=False, even if there is no duplicate vertices or NaNs, the order of the vertices is changed. Is this intentional?

Thank you in advance!

Issue Analytics

State:
Created 3 years ago
Comments:7 (4 by maintainers)

Top GitHub Comments

1reaction

mikedhcommented, Nov 29, 2020

No worries, are you loading an OBJ by chance? It’s a little bit of a long story as to why it needs another kwarg, but you can pass maintain_order to the OBJ loader. If it’s another format it really shouldn’t be changing the order with just process=False. Snippet in OBJ loader: https://github.com/mikedh/trimesh/blob/ee075ebc9f083f125d6fcfe2ed99cf8b479ad1b1/trimesh/exchange/obj.py#L22-L28

Call with: trimesh.load(file_name, process=False, maintain_order=True)

0reactions

mikedhcommented, Nov 30, 2020

Oh I didn’t read the issue title. Yeah if process=True it will change vertex order 😄