Child Of constraint bug #65820

New Issue

Anoca · 2019-06-14T22:48:46+02:00

Anoca commented

2019-06-14 22:48:46 +02:00

System Information
Operating system: Win 7 64-bit
Graphics card: AMD Radeon R7 240

Blender Version
Broken: blender-2.80.0-git.6529d20d79a5-windows64 (the 12th of june) and a few older ones
Worked: some april and may builds

Short description of error
The Child Of constraint appears to be snapping the bones with this constraint back to rest pose

Exact steps for others to reproduce the error
(This only happens to bones from a armature)

Create an armature, and make a few bones
Make an ik out of it, dublicate a bone and name it as a Goal bone to control the ik
Make controllers
give the goal bone a Child Of constraint and make it be the child of that controller
now that the Goal bone controls the ik, and follows ever transform from the parented controller, set the first keyframe in the timeline, and go to the next frame
Do not animate the controller, animate the Goal bone. Animating the controller won't do anything

when a bone has a child of constraint, it will be difficult to animate it since it snaps to its original rest position after you inserted a keyframe and move to the next frame.

**System Information** Operating system: Win 7 64-bit Graphics card: AMD Radeon R7 240 **Blender Version** Broken: blender-2.80.0-git.6529d20d79a5-windows64 (the 12th of june) and a few older ones Worked: some april and may builds **Short description of error** The Child Of constraint appears to be snapping the bones with this constraint back to rest pose **Exact steps for others to reproduce the error** (This only happens to bones from a armature) 1) Create an armature, and make a few bones 2) Make an ik out of it, dublicate a bone and name it as a Goal bone to control the ik 3) Make controllers 4) give the goal bone a Child Of constraint and make it be the child of that controller 5) now that the Goal bone controls the ik, and follows ever transform from the parented controller, set the first keyframe in the timeline, and go to the next frame Do not animate the controller, animate the Goal bone. Animating the controller won't do anything when a bone has a child of constraint, it will be difficult to animate it since it snaps to its original rest position after you inserted a keyframe and move to the next frame.

Anoca commented

2019-06-14 22:48:46 +02:00

Added subscriber: @Maker26

Stephen Swaney commented

2019-06-15 05:51:44 +02:00

Added subscriber: @StephenSwaney

Stephen Swaney commented

2019-06-15 05:51:44 +02:00

Got a .blend showing the problem?

Anoca commented

2019-06-15 07:58:17 +02:00

TestFile.blend

Just move the goal (not the controller) somewhere, set the keyframe and then move to the next frame

[TestFile.blend](https://archive.blender.org/developer/F7104053/TestFile.blend) Just move the goal (not the controller) somewhere, set the keyframe and then move to the next frame

Bastien Montagne commented

2019-07-23 10:51:10 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2019-07-23 10:51:10 +02:00

This seems to be fixed in current code? At least cannot reproduce this issue here…

Sybren A. Stüvel commented

2019-08-06 13:54:44 +02:00

Added subscriber: @dr.sybren

Sybren A. Stüvel commented

2019-08-06 13:54:44 +02:00

Changed status from 'Open' to: 'Archived'

Sybren A. Stüvel closed this issue

2019-08-06 13:54:44 +02:00

Sybren A. Stüvel self-assigned this 2019-08-06 13:54:44 +02:00

Sybren A. Stüvel commented

2019-08-06 13:54:44 +02:00

Since last asking for information it has been 7 or more days, due to the policy of our bug tracker we will have to archive the report until the requested information is given.

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Child Of constraint bug #65820