Transform Operator affected by disabled bone constraint #108161

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opened 2023-05-22 20:43:01 +02:00 by Demeter Dzadik · 4 comments

Demeter Dzadik commented

2023-05-22 20:43:01 +02:00

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System Information
Operating system: Linux-6.3.2-gentoo-x86_64-Intel-R-_Core-TM-i9-9900K_CPU@_3.60GHz-with-glibc2.36 64 Bits, X11 UI
Graphics card: NVIDIA GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 530.41.03

Blender Version
Broken: version: 4.0.0 Alpha, branch: HEAD (modified), commit date: 2023-05-21 14:00, hash: 8c6908eba578

Short description of error
If the constraint stack of a bone is Armature->Stretch To, bone is transformed with either the gizmo or the G key, it will have a different behaviour depending on if the Armature constraint is disabled, or removed.

Exact steps for others to reproduce the error

File: transform_affected_by_disabled_constraint.blend.
Try transforming the middle bone, it behaves super weirdly.
Remove the already disabled Armature constraint.
Transforming now works fine.

**System Information** Operating system: Linux-6.3.2-gentoo-x86_64-Intel-R-_Core-TM-_i9-9900K_CPU_@_3.60GHz-with-glibc2.36 64 Bits, X11 UI Graphics card: NVIDIA GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 530.41.03 **Blender Version** Broken: version: 4.0.0 Alpha, branch: HEAD (modified), commit date: 2023-05-21 14:00, hash: `8c6908eba578` **Short description of error** If the constraint stack of a bone is Armature->Stretch To, bone is transformed with either the gizmo or the G key, it will have a different behaviour depending on if the Armature constraint is disabled, or removed. **Exact steps for others to reproduce the error** 1. File: [transform_affected_by_disabled_constraint.blend](/attachments/ed9e7fc4-0cb4-42ca-8246-6a08df7ca785). 2. Try transforming the middle bone, it behaves super weirdly. 3. Remove the already disabled Armature constraint. 4. Transforming now works fine.

transform_affected_by_disabled_constraint.blend

2.1 MiB

Demeter Dzadik added the

labels 2023-05-22 20:43:02 +02:00

Iliya Katushenock added the

Animation & Rigging

label 2023-05-22 20:48:46 +02:00

Germano Cavalcante commented

2023-05-23 00:45:28 +02:00

Member

The difference isn't very evident to me, it's kind of subtle, but I notice that the bone is more stretched when the disabled constraint is present.

The difference isn't very evident to me, it's kind of subtle, but I notice that the bone is more stretched when the disabled constraint is present.

Germano Cavalcante added

Animation & Rigging

and removed

Animation & Rigging

labels 2023-05-23 00:45:48 +02:00

Demeter Dzadik commented

2023-05-23 12:49:19 +02:00

Author

Member

It shouldn't be subtle, check the attached a video! Up is left, down is right. Left/right/forward/backward are doubled.

And to be fair, the behaviour is equally wacky when the constraint is enabled, but maybe that's a limitation, or at least something that was possibly always broken. But for now, the strangest issue is definitely the disabled constraint affecting things at all.

It shouldn't be subtle, check the attached a video! Up is left, down is right. Left/right/forward/backward are doubled. And to be fair, the behaviour is equally wacky when the constraint is enabled, but maybe that's a limitation, or at least something that was possibly always broken. But for now, the strangest issue is definitely the disabled constraint affecting things at all.

NVIDIA_Share_NPUZXz2EFW.webm

2.5 MiB

YimingWu commented

2023-05-24 04:49:52 +02:00

Member

It's indeed influencing. Tested on 4.0.

It's indeed influencing. Tested on 4.0.

YimingWu commented

2023-05-24 06:01:09 +02:00

Member

Ok there appears to be a missing CONSTRAINT_OFF check in transform_convert.cc which inverted matrix correction before transforming. Will open a PR.

Ok there appears to be a missing `CONSTRAINT_OFF` check in `transform_convert.cc` which inverted matrix correction before transforming. Will open a PR.

YimingWu referenced a pull request that will close this issue

2023-05-24 06:05:21 +02:00

Fix #108161: Transform affected by off constraints #108217

YimingWu referenced this issue from a commit

2023-05-30 15:25:16 +02:00

Fix #108161: Transform affected by off constraints

YimingWu closed this issue

2023-05-30 15:25:17 +02:00

Blender Bot added

and removed

labels 2023-05-30 15:25:17 +02:00

YimingWu referenced this issue

2023-05-30 15:27:56 +02:00

Blender LTS: Maintenance Task 3.3 #100749

Philipp Oeser referenced this issue from a commit

2023-06-15 15:06:28 +02:00

Fix #108161: Transform affected by off constraints

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