Double transforms on parents/children #55408
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Reference: blender/blender#55408
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Blender Version
Broken: 2.8
97e7d9f90b
Short description of error
In 2.7 when you select a parent object and every children objects under it and you start to move,rotate or scale them, you basically only apply these transforms to the top parent so that double transformations are prevented.
In 2.8 this is no longer the case and if you want to duplicate a parent with all its children and move them you have to first select only the new parent which could make the user search the Alt + RMB menu or Outliner first, which makes it more tedious.
Added subscriber: @JulienKaspar
Another related problem would be that when a parent and it's children are selected and you apply the transforms, the parenting relation is also ignored.
If the parent is scaled to 0.5 in all axes and the child is still at a scale of 1, and all get their scale applied, the parent gets set back to 1 and the child will grow to twice the size with a scale of 1.
Added subscribers: @dfelinto, @ideasman42, @mont29
Arg... This is a hairy mess :/
We have a system to detect those cases and prevent transform of childrens, but it has been broken in blender2.8 changes, and it seems more than one time...
The
base.flag
vs.base.flag_legacy
may have broken syncing between base and object. However, tried reverting back to a singlebase.flag
and it does not fix the issue. So maybe something else is also at stake here, like ;ulti-editing changes...@dfelinto @ideasman42 adding both of you here, in case you have some brilliant idea, but still investigating (next step: try to bisect to find which commit broke that!).
OK, so this is actually COW-related issue, present since even before March when starting blender with it enabled....
Will check further tomorrow.
This issue was referenced by
995a1815f5
Changed status from 'Open' to: 'Resolved'
PS: please make one report per issue, the apply transform is something else ;)