Blender Foundation: Blender 2.x BF release: Detail: 32336 linked character return to rest position when i hit ctrl-z

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[#32336] linked character return to rest position when i hit ctrl-z

Date:
2012-08-16 01:22 Priority:
3

State:
Closed

Submitted by:
johan tri handoyo (johantri) Assigned to:
Joshua Leung (aligorith)

Category:
Animation system Status:
Fixed / Closed

Relates to: Duplicates:

Patches:

Summary:
linked character return to rest position when i hit ctrl-z

Detailed description

This is happened in windows 7 64bit, for Blender 2.64 test built 2 and Blender 2.63 as well.

Kindly please check the attachment for sample files. In the testing_link.blend file, whenever i try to move the bones to make a new poses, and then hit undo, the character is always returned to it's rest position, although when i scrub the timeline, the character pose behave as it should be again.

Followup

Message

Date: 2012-08-30 16:18
Sender: Joshua Leung
Once upon a time, we used to reevaluate animation again after undo. That would solve the issue here, as that would overwrite the values pulled back from the proxy.

However, this introduced its own set of problems: namely, for unkeyed poses, you'd constantly end up resetting all the unkeyed bones (even those that weren't proxy protected), potentially loosing many minutes of careful/meticulous posing with no hope of recovery.

As annoying as this is, IMO chances are it's probably best to err on the side of just requiring that extra step.

Date: 2012-10-19 17:45
Sender: Ton Roosendaal
Hi Joshua,

I know that an Undo will reload and re-evaluate proxy. It's unclear however what kind of provisions were made to keep poses on file load and on anim updates, and how to make this work for proxy undo too?

Date: 2012-10-20 05:16
Sender: Joshua Leung
Hi Ton,

In the past, what was done was that we'd leave "bone unkeyed" flags all over the place anytime anything on the bones was touched by animator via transform tools. These were only cleared when the frame was changed. Animation evaluation would only happen for bones that don't have this set. IIRC, for proxy undo, we'd keep the unkeyed flags that existed before the last action needing an undo, which would prevent the anim updates from clobbering the unkeyed bones but would still allow other bones to get anim flushing so that we don't revert to the "from proxy" restpose.

Or something like that... it's been a while, and IIRC there were situations here where you could end up with totally unmovable objects/bones as the these flags somehow mysteriously failed to work.

Date: 2013-01-21 11:06
Sender: Joshua Leung
Fixed in svn by Ton (r. 53762)

Attached Files:

Name	Date	Download

linked character undo fail.zip	2012-08-16 01:22	Download

Changes:

Field	Old Value	Date	By

Status	Investigate	2013-01-21 11:06	aligorith
status_id	Open	2013-01-21 11:06	aligorith
close_date	None	2013-01-21 11:06	aligorith
assigned_to	none	2012-08-30 16:18	aligorith
Status	New	2012-08-30 16:18	aligorith
File Added	21750: linked character undo fail.zip	2012-08-16 01:22	johantri