Rotation pivot uses mesh object instead of pose bone while in weight paint mode #85471

New Issue

Demeter Dzadik · 2021-02-08T15:31:25+01:00

Demeter Dzadik commented

2021-02-08 15:31:25 +01:00

System Information
Operating system: Linux-5.4.0-7634-generic-x86_64-with-debian-bullseye-sid 64 Bits
Graphics card: GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100

Blender Version
Broken: e12eb89f22 (bisected)

Short description of error
The Local, Normal and Gimbal transform orientations seem to be taking their data from the active mesh object instead of the active pose bone, resulting in these transform orientations being unusable now. This is only in weight paint mode. I believe this was introduced fairly recently, and this makes weight painting properly virtually impossible, since every time I want to do something as basic as rotating a bone on its local axis, I have to leave weight paint mode.

Exact steps for others to reproduce the error

weight_paint_orientation.blend
The above file is already in weight paint mode. The object and bone are oriented differently to illustrate, and the current orientation mode is Local.
Press R, X to rotate. The bone rotates around the cube's local axis, which is wrong.
Leave weight paint mode, enter pose mode, and try rotating the bone with R, X to see the expected behaviour.

**System Information** Operating system: Linux-5.4.0-7634-generic-x86_64-with-debian-bullseye-sid 64 Bits Graphics card: GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100 **Blender Version** Broken: e12eb89f22c6ee17971195e0221a8e8b8ee3db8a (bisected) **Short description of error** The Local, Normal and Gimbal transform orientations seem to be taking their data from the active mesh object instead of the active pose bone, resulting in these transform orientations being unusable now. This is only in weight paint mode. I believe this was introduced fairly recently, and this makes weight painting properly virtually impossible, since every time I want to do something as basic as rotating a bone on its local axis, I have to leave weight paint mode. **Exact steps for others to reproduce the error** - [weight_paint_orientation.blend](https://archive.blender.org/developer/F9727099/weight_paint_orientation.blend) - The above file is already in weight paint mode. The object and bone are oriented differently to illustrate, and the current orientation mode is Local. - Press R, X to rotate. The bone rotates around the cube's local axis, which is wrong. - Leave weight paint mode, enter pose mode, and try rotating the bone with R, X to see the expected behaviour.

Demeter Dzadik commented

2021-02-08 15:31:25 +01:00

Added subscriber: @Mets

Demeter Dzadik commented

2021-02-08 16:01:27 +01:00

The same issue is present with cursor snapping. "Snap cursor to selected" snaps to the mesh object rather than bones. I'm guessing it's the same issue, but if not I can open a separate report. I'm also less confident that this didn't always work this way, but I don't think it did. It's definitely wrong either way though.

Sebastian Parborg commented

2021-02-10 12:52:15 +01:00

Added subscriber: @ZedDB

Sebastian Parborg commented

2021-02-10 12:52:15 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Sebastian Parborg commented

2021-02-10 12:52:15 +01:00

Can confirm that this doesn't happen with the 2.92 branch. Must be a recent change, bisecting.

Sebastian Parborg commented

2021-02-10 14:05:28 +01:00

Added subscriber: @mano-wii

Sebastian Parborg commented

2021-02-10 14:05:28 +01:00

Bisected it to: e12eb89f22

@mano-wii It seems like this fix broke local rotation in weight paint mode. From the task it fixed, it seems like this was unintentional.
From the code it is not obvious that it will break this use case. So perhaps we should add a automated test for this to test this quirk?

We can take the example file and do a local transform rotation and check if the bone rotated along the bone local axis as intented.

Bisected it to: e12eb89f22c6ee17971195e0221a8e8b8ee3db8a @mano-wii It seems like this fix broke local rotation in weight paint mode. From the task it fixed, it seems like this was unintentional. From the code it is not obvious that it will break this use case. So perhaps we should add a automated test for this to test this quirk? We can take the example file and do a local transform rotation and check if the bone rotated along the bone local axis as intented.

blender-admin commented

2021-02-10 16:27:01 +01:00

This issue was referenced by bdb83cc32c

This issue was referenced by bdb83cc32cbd0997752420ef95c791f66dca54c8

Germano Cavalcante commented

2021-02-10 16:33:08 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Germano Cavalcante closed this issue

2021-02-10 16:33:08 +01:00

Germano Cavalcante self-assigned this 2021-02-10 16:33:08 +01:00

Demeter Dzadik commented

2021-02-10 18:12:16 +01:00

Just updated my Blender to test, thanks so much for the fix!

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Rotation pivot uses mesh object instead of pose bone while in weight paint mode #85471