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  • Skeletal animation from Blender to Spine

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Hello,

I've recently used Blender as reference to produce 3D-like animations in Spine, particularly walk-cycles in 3-dimensional perspective. Using Blender as reference has helped greatly to improve the accuracy of the animations perspective however it's essentially a manual copy of the skeletons angle and length to simulate what Blender does when rendering a 3D skeleton.

So given that I hate manual labour and we still have a ton of animations to produce I'm thinking of pulling together a plugin for Blender able to export a JSON compatible with Spine. This would basically project bone end-points to a 2D plane (camera viewport in this case) and convert angles and scale in the correct way. So as long as the bones structure and names are aligned with the Spine project it should work OK, at least in theory.

Before I start this weekend project is there anything similar anyone has ever done (aside from the Bender JSON exporter which I plan to use as starting point)? Also, anyone else seeing the point in what I'm trying to do? 🙂

Thanks

Not that we've come across.
We tend to feature stuff like this here in the forum and in the links because it helps a lot of users.
Users have contributed stuff like AE-to-Spine and Inkskape-to-Spine in the past

If I understand correctly, I'd say your project sounds very handy. I've had to pre-render pose frames in the past from Blender for an 8-direction character, for eventual drawing in Photoshop and 2D animation in Spine. Though worth it for the quality/consistency, it was a lot of extra steps and a huge pain. The lack of multi-pose setup in Spine is still a pain point we hope to improve.

You can find the Spine Skeleton JSON documentation here: Spine: JSON export format
If you have any questions about it, don't hesitate to ask!

OK thanks Pharan. I'll post back results when (and if!) I get to make progress on this.