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Maniphest T46344

Bone isn't affected by influence keyframe if the action is shared (*).
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Description

(*) The complete tittle would be: "Bone isn't affected by influence keyframe if the same action is shared with another armature with bones with different names".

80-influence-not-respected.blend491 KBDownload

  • Open the file.
  • Move in timeline and see what the bone (armature "B") does with its constraint.
  • Select armature "C".
  • Move across the timeline in DopeSheet: bone of armature "B" isn't affected by influence keyframe

The channel of the armature "C" gets red underlined. So, the Action is affected of this "red-underlineness"... so, armature "B" is affected too.

I know that this is a kinky bug... it is not normal/suggested to use the same action in different armatures with different bones. I discovered this bug by doing that, by mistake.

Maybe it is not usefull to put time on fixing it, because it is not a normal configuration. You guys decide.

Event Timeline

Mario Mey (mariomey) created this task.Oct 1 2015, 10:44 PM
Mario Mey (mariomey) raised the priority of this task from to 90.
Mario Mey (mariomey) updated the task description. (Show Details)
Mario Mey (mariomey) added a project: Animation & Rigging.
Mario Mey (mariomey) edited a custom field.
Mario Mey (mariomey) added a subscriber: Mario Mey (mariomey).
Aaron Carlisle (Blendify) added a project: BF Blender.Oct 2 2015, 12:45 AM
Aaron Carlisle (Blendify) added a subscriber: Aaron Carlisle (Blendify).
Bastien Montagne (mont29) lowered the priority of this task from 90 to 50.Oct 2 2015, 12:17 PM
Bastien Montagne (mont29) added subscribers: Joshua Leung (aligorith), Bastien Montagne (mont29).

Have to summon @Joshua Leung (aligorith) here… Do we consider this as known limitation of current system, or is it really a bug? That 'fighting' between valid/invalid state in shared actions if not that nice, gives a bit non-predictable results.

Joshua Leung (aligorith) moved this task from Backlog to TODOs on the Animation & Rigging board.Oct 17 2015, 1:31 PM
Sergey Sharybin (sergey) added a subscriber: Sergey Sharybin (sergey).Jul 28 2016, 4:28 PM

This isn't really a solvable problem within the current design. Considering it a TODO for 2.8.

Sergey Sharybin (sergey) edited a custom field.Jul 28 2016, 4:29 PM
Sybren A. Stüvel (sybren) moved this task from TODOs to Needs Investigation on the Animation & Rigging board.Nov 16 2020, 3:55 PM