Normalizing GLTF geometry

[onion2k]

I'm using a few different GLTF models and they're all very different sizes. Is there a way to scale the geometry, and then 'apply' the scaling so it's effectively [1.0,1.0,1.0] relative to the world?

This is the component I'm using right now;

function Forest() {

  const { nodes, materials } = useGLTF('/tree/tree01.gltf', true)
  const treeGeometry = nodes['node-0'].geometry;
  const treeMaterial = nodes['node-0'].geometry;

  const ref = useRef()

  useFrame(state => {
    const time = state.clock.getElapsedTime()
    let i = 0
    for (let x = 0; x < 6; x++) {
      for (let z = 0; z < 6; z++) {
        const id = i++
        tempTrees.position.set(x * 300, 300, 3 - z); // Large world numbers
        tempTrees.scale.set( 1, 1, 1 );
        tempTrees.updateMatrix()
        ref.current.setMatrixAt(id, tempTrees.matrix)
      }
    }
    ref.current.instanceMatrix.needsUpdate = true
  })

  // need to scale down because the model is huge
  return (
    <instancedMesh ref={ref} args={[treeGeometry, treeMaterial, 36]} scale={[0.007, 0.007, 0.007]} />
  )
}

I could just scale the models down in Blender but the idea is for a user to be able to use their own model eventually so it'd be good to apply a fix for it in code.

[drcmda]

check the threejs docs for geometry, it has helper functions for that: https://threejs.org/docs/index.html#api/en/core/BufferGeometry.scale