I’ve created simple model just for testing the rig… in blender you can see animation… but this animation doesn’t work in both https://sandbox.babylonjs.com/ and https://gltf-viewer.donmccurdy.com/
It uses Inverse Kinematics bone constraint. I’ve also used copy rotation constraint but i didn’t include it in this test for simplification.
test.gltf (31.3 KB)
test.blend (661.3 KB)
And here is the modified blender and gltf. I’ve added single bone animation to previous rigged animation and as you can see only this bone is animated… this is an issue I’ve described in the topic.
test.blend (662.3 KB)
test2.gltf (31.9 KB)
Ok…I’ve made some research))… it seems that THREEJS doesn’t support IK in GLTF… so the question is there any posibility implement IK using GLTF? Or the only solution is using forward kinematics only, or some libs (but in this case I believe animation clips won’t be work and all animation should be made manually in code) ?