Importer: Put all objects in the active collection

[capnm]

E.g. the Collada importer does it right (Collection 3):

[julienduroure]

Some thoughts:

• Some glTF files has multiple scenes inside, so there is no "active collection" in that case

A solution may be (for 2.80 only):

• add an importer option to choose to create objects in active collection or to create a new collection to create objects inside
• for new scene created, create a default collection inside

[capnm]

Preferably, I would not make the 2.8x user interface more complicated.

• in the (I think 98 %) case of single scene put everything in the current active collection (<=> Collada and other importers)
• if glTF has multiple scenes, insert scene objects into the corresponding new scenes "Scene Collection"

[emackey]

Further thoughts about multiple scenes in KhronosGroup/glTF#1542

+1 for putting normal single-scene glTFs into the active collection, without adding any new UI for it.

[julienduroure]

I started the work in import_in_collection branch

Still need to be tested carefully with all cases (no scene, 1 scene, multiple scenes, existing yet in blender or not, ...)

[julienduroure]

It's now merged into master, and push into blender repo. Should be available soon inside blender