parented objects get detached from their parent if the parent is moved and the child is invisible #48405

New Issue

mathieu menuet · 2016-05-11T21:11:11+02:00

mathieu menuet commented

2016-05-11 21:11:11 +02:00

System Information
Win7

Blender Version
Broken: 2.77a

Short description of error
if you transform a parent, the childs get the same transformation automatically, even if not selected and that's right. But all the child that are on a layer that are not visible (for clarity purpose or to speed up viewport, etc...) don't follow the parent anymore. User gets no warning and see the mess only when he make those child visible again.
Same action with a hidden object work as expected unlike unvisible layer.

Exact steps for others to reproduce the error
bug parent-child and visibility.blend
Open attached file. move the cube on Y to the other end of the "Zeppelin" hit alt+H and Suzanne is still on the cube.
Now deactivate layer 2, move the cube on Y back, reactivate layer 2, Suzanne has been left away.

**System Information** Win7 **Blender Version** Broken: 2.77a **Short description of error** if you transform a parent, the childs get the same transformation automatically, even if not selected and that's right. But all the child that are on a layer that are not visible (for clarity purpose or to speed up viewport, etc...) don't follow the parent anymore. User gets no warning and see the mess only when he make those child visible again. Same action with a hidden object work as expected unlike unvisible layer. **Exact steps for others to reproduce the error** [bug parent-child and visibility.blend](https://archive.blender.org/developer/F310148/bug_parent-child_and_visibility.blend) Open attached file. move the cube on Y to the other end of the "Zeppelin" hit alt+H and Suzanne is still on the cube. Now deactivate layer 2, move the cube on Y back, reactivate layer 2, Suzanne has been left away.

mathieu menuet commented

2016-05-11 21:11:11 +02:00

Changed status to: 'Open'

mathieu menuet commented

2016-05-11 21:11:11 +02:00

Added subscriber: @bliblubli

Gwenael Le Page commented

2016-05-11 21:47:13 +02:00

Added subscriber: @gwentiv

Gwenael Le Page commented

2016-05-11 21:47:13 +02:00

Yes, but as soon as you move your parent cube, suzanne reappears where she belongs…
This affects rendering too, it's not only in the viewport (render before you move the parent)
So I guess it is a matter of refreshing the scene whenever a layer is toggled On/Off.

Yes, but as soon as you move your parent cube, suzanne reappears where she belongs… This affects rendering too, it's not only in the viewport (render before you move the parent) So I guess it is a matter of refreshing the scene whenever a layer is toggled On/Off.

mathieu menuet commented

2016-05-11 23:58:42 +02:00

@gwentiv thanks for testing. The refresh should happen without user have to know some workaround to trigger it.

Bastien Montagne commented

2016-05-13 14:30:00 +02:00

Added subscribers: @Sergey, @ideasman42, @mont29

Bastien Montagne commented

2016-05-13 14:30:00 +02:00

The fact that objects on hidden layers do not get any update is desired (performance reasons). Not sure whether we want a full scene update on layers toggling, but sounds like best solution, @Sergey? @ideasman42?

Sergey Sharybin commented

2016-05-13 14:35:52 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2016-05-13 14:35:52 +02:00

Sergey Sharybin self-assigned this 2016-05-13 14:35:52 +02:00

Sergey Sharybin commented

2016-05-13 14:35:52 +02:00

This is a known limitation of old dependency graph. This is solved in a new one (however, some false-positive updates are possible there atm).

Thanks for the report, but not considered a bug.

This is a known limitation of old dependency graph. This is solved in a new one (however, some false-positive updates are possible there atm). Thanks for the report, but not considered a bug.

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parented objects get detached from their parent if the parent is moved and the child is invisible #48405