Automatically weights generation missing bones in rig #46664

New Issue

Andrew Buttery · 2015-11-01T21:16:18+01:00

Andrew Buttery commented

2015-11-01 21:16:18 +01:00

- Operating System, Graphics card ---

Windows 7 x64 service pack 1
NVIDIA GeForce 540M

- Blender version with error, and version that worked ---

Bug found in 2.76

Not sure what previous version this worked in

- Short description of error ---

When using Ctrl+P > Bones with Automatic weights some bones do not have a vertex group created and weights assigned.

Symptoms:

Open attached .blend file
Select one the the "right" eyebrows (i.e. screen left when in front view)) in pose mode; grab and the mug will deform
Select one the the "left" eyebrows (i.e. screen right when in front view) in pose mode; grab and the mug will not deform
Check the MUG object vertex groups and although there is a CTR DEF foot.r and CTR DEF foot.l vertex groups; there is no CTR DEF arm.l or CTR DEF eyebrow.l.nnn vertex groups and therefore no deform.
- Steps for others to reproduce the error (preferably based on attached .blend file) ---
Clear all vertex groups on MUG
Unparent MUG from MUG RIG
Select MUG; Select MUG RIG
Ctrl+P > Armature Deform > With Automatic weights
Try moving CTR DEF arm.l or any of the eyebrow.l and there is no movement
Select MUG
Go to Properties editor > Vertex context
Vertex Groups for CTR DEF foot.l and CTR DEF foot.r have been created and given weights
Vertex groups for CTR DEF arm.l and the left eyebrows have not been created and given weights

It does not seem to make a difference if Pose Tools > Make parent > X mirror is selected or not.

The ".r" bones for arm and eyebrows were created automatically via the X-Mirror in edit mode option. I'm pretty sure I created the foot.l and foot.r separately.
test rig.blend

- Operating System, Graphics card --- Windows 7 x64 service pack 1 NVIDIA GeForce 540M - Blender version with error, and version that worked --- Bug found in 2.76 Not sure what previous version this worked in - Short description of error --- When using Ctrl+P > Bones with Automatic weights some bones do not have a vertex group created and weights assigned. Symptoms: 1. Open attached .blend file 2. Select one the the "right" eyebrows (i.e. screen left when in front view)) in pose mode; grab and the mug will deform 3. Select one the the "left" eyebrows (i.e. screen right when in front view) in pose mode; grab and the mug will not deform 4. Check the MUG object vertex groups and although there is a CTR DEF foot.r and CTR DEF foot.l vertex groups; there is no CTR DEF arm.l or CTR DEF eyebrow.l.nnn vertex groups and therefore no deform. - Steps for others to reproduce the error (preferably based on attached .blend file) --- 1. Clear all vertex groups on MUG 2. Unparent MUG from MUG RIG 3. Select MUG; Select MUG RIG 4. Ctrl+P > Armature Deform > With Automatic weights 5. Try moving CTR DEF arm.l or any of the eyebrow.l and there is no movement 6. Select MUG 7. Go to Properties editor > Vertex context 8. Vertex Groups for CTR DEF foot.l and CTR DEF foot.r have been created and given weights 9. Vertex groups for CTR DEF arm.l and the left eyebrows have not been created and given weights It does not seem to make a difference if Pose Tools > Make parent > X mirror is selected or not. The ".r" bones for arm and eyebrows were created automatically via the X-Mirror in edit mode option. I'm pretty sure I created the foot.l and foot.r separately. [test rig.blend](https://archive.blender.org/developer/F249559/test_rig.blend)

Andrew Buttery commented

2015-11-01 21:16:18 +01:00

Changed status to: 'Open'

Andrew Buttery commented

2015-11-01 21:16:18 +01:00

Added subscriber: @AndrewButtery

Aaron Carlisle commented

2015-11-02 02:12:50 +01:00

Added subscriber: @Blendify

Bastien Montagne commented

2015-11-03 15:09:42 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2015-11-03 15:09:42 +01:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2015-11-03 15:09:42 +01:00

Bastien Montagne self-assigned this 2015-11-03 15:09:42 +01:00

Bastien Montagne commented

2015-11-03 15:09:42 +01:00

Thanks for the report, but no bug here, somehow you manage to disable the 'Deform' option (in related panel header) of your left bones, so they cannot be used as deformers, and are ignored when creating vgroups…

Andrew Buttery commented

2015-11-03 20:30:37 +01:00

Changed status from 'Archived' to: 'Open'

Andrew Buttery reopened this issue

2015-11-03 20:30:37 +01:00

Andrew Buttery commented

2015-11-03 20:30:37 +01:00

Hi Bastien,

OK - this makes sense as now I remember that I have been testing the Deform option to see if I could drive it. The left eyebrow were the copies of the Arm.l when when deform was turned off. So that is the cause.

However, when the X-mirror created the Right bones the Deform option was turned on again. So the X-Mirror is inconsistent - in that it picked up some aspects of the bones - everything from the Relations Panel and Display panel but not the Deform panel.

So I humbly suggest that it is still a bug, albeit a small one because of the inconsistent nature of the mirrored bone creation.

Thanks.

  - andrew

Hi Bastien, OK - this makes sense as now I remember that I have been testing the Deform option to see if I could drive it. The left eyebrow were the copies of the Arm.l when when deform was turned off. So that is the cause. However, when the X-mirror created the Right bones the Deform option was turned on again. So the X-Mirror is inconsistent - in that it picked up some aspects of the bones - everything from the Relations Panel and Display panel but not the Deform panel. So I humbly suggest that it is still a bug, albeit a small one because of the inconsistent nature of the mirrored bone creation. Thanks. - andrew

Bastien Montagne commented

2015-11-03 21:28:56 +01:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2015-11-03 21:28:56 +01:00

Bastien Montagne commented

2015-11-03 21:28:56 +01:00

Please do not reopen tasks yourself.

Also, this is a totally different issue, which requires a new report with usual precise description of issue, steps to reproduce it, and .blend file to help. Let’s keep one issue per report, much easier to manage. :)

BTW, X-Mirror is only for 'physical' properties like position, size, etc., things editable directly in the 3DView, afaik. It’s a 3DView editing option, it does not take into account all properties of bones… So still do not think there is any bug here.

Please do not reopen tasks yourself. Also, this is a totally different issue, which requires a new report with usual precise description of issue, steps to reproduce it, and .blend file to help. Let’s keep one issue per report, much easier to manage. :) BTW, X-Mirror is only for 'physical' properties like position, size, etc., things editable directly in the 3DView, afaik. It’s a 3DView editing option, it does not take into account **all** properties of bones… So still do not think there is any bug here.

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Automatically weights generation missing bones in rig #46664