Add userData to AnimationClip and extras to glTF animations #31586
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📦 Bundle sizeFull ESM build, minified and gzipped.
🌳 Bundle size after tree-shakingMinimal build including a renderer, camera, empty scene, and dependencies.
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Mugen87
reviewed
Aug 6, 2025
Mugen87
approved these changes
Aug 6, 2025
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Description
glTF schema supports extras property in animations. But when loading a file with extra properties using
GLTFLoaderand saving it withGLTFExporter, these properties are lost.This PR adds support by adding
userDatatoAnimationClipand loading the animation extras in that, similar to objects, materials, which is then used inGLTFExporter. Also this is useful to store any custom data like in the threejs editor.This contribution is funded by Threepipe