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Maniphest T99581

copy UV option doesn't work correctly
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Description

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2070 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.15

Blender Version
Broken: version: 3.2.1, branch: master, commit date: 2022-07-05 15:44, hash: rBa2d59b2dac9e

Short description of error
Link/Transfer Data > copy UV maps gives wrong result.

Exact steps for others to reproduce the error
Open the file and try to copy the "chainmail1" object UV to "chainmail2" object.
I get the same wrong result even with the Data Transfer Modifier.

Please check also the attached video.

Thank you
Max

copyUV.blend831 KBDownload

Event Timeline

Massimiliano Puliero (mmaaxx) created this task.Jul 10 2022, 7:41 AM
Germano Cavalcante (mano-wii) closed this task as Archived.Jul 13 2022, 12:08 AM
Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).

The mesh is not the same.
If we compare the indices of the vertices, they are in different positions.

The Copy UV operator is a simple operator that does not consider the mesh topology.
So while not useful in many cases, it works as designed and is not a bug.

Data Transfer Modifier, works quite differently.
I tested it and there were no problems.

Massimiliano Puliero (mmaaxx) added a comment.Jul 13 2022, 2:32 AM

Thanks for the reply.
In that case the tool tip should say (needs matching vertex order) instead of ( needs matching geometry)