Hierarchical Bone Collections #115934
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Nathan Vegdahl
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Reference: blender/blender#115934
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This is a continuation of the work on Bone Collections described in #108941. The work is done in a branch that's tracked by pull request #115945.
Blender 4.0 replaced armature layers with a flat list of bone collections. The next step is to allow nesting of bone collections.
The data structure is as follows:
ListBasewhen writing to the blend file, for forward compatibility with Blender 4.0.child_indexandchild_countproperties, which index into the flat array of bone collections. Making this index-based is easier to work with than pointer-based, as these indices can be validated, and don't need updating when a copy is made of the Armature.The work:
ListBase, bone collections are going to move to an array data structure. This mimicks what the Grease Pencil team is doing for GPv3, and what the Animation & Rigging module is doing for animation layers (#114098). (9e7a70d6c6)BoneCollectionwithchild_indexandchild_countproperties.To keep in mind / nice for later (i.e. after merging with
main):Checked out the test build.... great work thus far... thank you, just wondering if this dev work will make this "drag n' drop" functionality available to the add-on community ?
The work is done, closing this issue.