I'm trying to render a 3D avatar using react-three-fiber and React, but I'm experiencing some difficulties with positioning the avatar. As you can see from from the following CodeSandbox https://codesandbox.io/s/vigorous-ardinghelli-ypwjsb?file=/pages/index.js, the top of the avatar's head is not visible when you first render the page. However, if you change the position of the model (e.g. from [0.025, -0.9, 1] to [0.025, -1, 1]) and re-render the page, suddenly the avatar is showing correctly. Why is that?
Reposting the solution I got from a Reddit user:
it looks like the keyframe track actions["Armature|mixamo.com|Layer0"].play() pushes the model up and down.
i reexported the model
npx gltfjsx model.glb --keepnames
https://codesandbox.io/s/interesting-lewin-rnq66m?file=/pages/index.js and that seems to do it. it should preserve names by default when animations are present, i don't get why it's omitting them. but either way, it works.
should be fixed upstream (gltfjsx) as well now. another export should include names