Check if bones are used/referenced/keyed in animations

abuki

Hello,

We have a quite complicated skeleton setup with a lot of bones. I would like to see a list of bones that might be unnecessary. That means that they have no key in any animation - they are not used. Then I can decide that I can delete some of them to keep structure cleaner.
Is there anything like that or is something like that planned? It might also apply to path constraints etc. not just bones, but bones would be a nice beginning.

If there is no such a thing in the editor, can you give me some starting advice on how to program this in C# in Unity? I already did some animation checks on C# animation data, so just some general idea would be enough.

Thanks!

abuki

Nate

This is an interesting idea. We don't have plans to add it in the short term, but I do think it's worth doing.

You could do it by looking at the JSON data or loading the data into a Spine runtime. Bones can be used in a number of places. The obvious one is animation timelines. Go through Animation timelines, if it is a BoneTimeline (which covers rotation, scale, translation, and shear timlines) then skeleton.slots[timeline.boneIndex] will give you the bone. Other places a bone can be used is in an IK, path, or transform constraint.

Note a bone may not be used anywhere, but have child bones or slots that are used.

abuki

Great, thanks for the tips!