Collections: Appending scene links random collections to existing scene - Need to change policy on 'orphaned' objects in link/append code #67032

New Issue

Wayne Dixon · 2019-07-16T04:15:58+02:00

Wayne Dixon commented

2019-07-16 04:15:58 +02:00

System Information
Operating system: Darwin-17.2.0-x86_64-i386-64bit 64 Bits
Graphics card: NVIDIA GeForce GTX 1050 Ti OpenGL Engine NVIDIA Corporation 4.1 NVIDIA-10.27.6 378.10.10.10.20.109

Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-15 20:44, hash: af51988115
Worked: (optional)

Short description of error
When appending a scene from another file Blender will link some random collections at 0,0,0

Exact steps for others to reproduce the error
Start a fresh file
Append the 'BG' scene from the 'treasure-chest-BG' file.
It will link some of the collections to the current scene in the working file.

See attached video and files
append_scene_test.blend

blender_bug_APPENDING_SCENE.mp4

treasure-chest-BG.blend

**System Information** Operating system: Darwin-17.2.0-x86_64-i386-64bit 64 Bits Graphics card: NVIDIA GeForce GTX 1050 Ti OpenGL Engine NVIDIA Corporation 4.1 NVIDIA-10.27.6 378.10.10.10.20.109 **Blender Version** Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-15 20:44, hash: `af51988115` Worked: (optional) **Short description of error** When appending a scene from another file Blender will link some random collections at 0,0,0 **Exact steps for others to reproduce the error** Start a fresh file Append the 'BG' scene from the 'treasure-chest-BG' file. It will link some of the collections to the current scene in the working file. See attached video and files [append_scene_test.blend](https://archive.blender.org/developer/F7612152/append_scene_test.blend) [blender_bug_APPENDING_SCENE.mp4](https://archive.blender.org/developer/F7612153/blender_bug_APPENDING_SCENE.mp4) [treasure-chest-BG.blend](https://archive.blender.org/developer/F7612151/treasure-chest-BG.blend)

Wayne Dixon commented

2019-07-16 04:15:58 +02:00

Added subscriber: @WayneDixon

Bastien Montagne commented

2019-07-16 20:52:09 +02:00

Added subscriber: @mont29

Bastien Montagne self-assigned this 2019-07-16 20:52:09 +02:00

Bastien Montagne commented

2019-07-16 20:52:09 +02:00

There is something wrong here indeed... think it's related to non-instanced objects, but still investigating.

Bastien Montagne commented

2019-07-16 22:36:46 +02:00

Yeah, this is not a bug in fact. Your treasure-chest-BG.blend file has several objects which are not in any scene (the ones in fern collection e.g.)… Blender used to forbid this, and hence those 'orphaned' objects/collections are forcefully added to the current scene when linking/appending.

We can probably consider changing this policy, now that any collection can be instantiated in a view layer at any time, as long as an object belongs to at least one collection, things should be OK…

Will keep that task open as a TODO, we'll have to wait for after 2.80 release to address this anyway.

Yeah, this is not a bug in fact. Your `treasure-chest-BG.blend` file has several objects which are not in any scene (the ones in `fern` collection e.g.)… Blender used to forbid this, and hence those 'orphaned' objects/collections are forcefully added to the current scene when linking/appending. We can probably consider changing this policy, now that any collection can be instantiated in a view layer at any time, as long as an object belongs to at least one collection, things should be OK… Will keep that task open as a TODO, we'll have to wait for after 2.80 release to address this anyway.

Bastien Montagne changed title from ~~Collections: Appending scene links random collections to existing scene~~ to Collections: Appending scene links random collections to existing scene - Need to change policy on 'orphaned' objects in link/append code

2019-07-16 22:37:23 +02:00

Brecht Van Lommel commented

2019-08-12 13:33:19 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-08-12 13:33:19 +02:00

I think it should only instance the objects or collections that were selected by the user in the file browser, all the indirect stuff indeed does not need to be instanced.

blender-admin commented

2019-08-12 15:37:58 +02:00

This issue was referenced by 37b4384b59

This issue was referenced by 37b4384b59c09684ac4ece5e39bf20187968f737

Bastien Montagne commented

2019-08-12 15:44:33 +02:00

Changed status from 'Open' to: 'Resolved'

Bastien Montagne closed this issue

2019-08-12 15:44:33 +02:00

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Collections: Appending scene links random collections to existing scene - Need to change policy on 'orphaned' objects in link/append code #67032