babylon.js gltf scene hierarchy

场景层次结构 就那么别扭？

https://doc.babylonjs.com/typedoc/classes/BABYLON.AssetContainer
https://github.com/BabylonJS/Babylon.js/issues/7152
geometries: The list of geometries used in the scene.

materials: All of the materials added to this scene
In the context of a Scene, it is not supposed to be modified manually.
Any addition or removal should be done using the addMaterial and removeMaterial Scene methods.
Note also that the order of the Material within the array is not significant and might change.

meshes：All of the (abstract) meshes added to this scene

transformNodes ：All of the transform nodes added to this scene In the context of a Scene, it is not supposed to be modified manually. Any addition or removal should be done using the addTransformNode and removeTransformNode Scene methods. Note also that the order of the TransformNode within the array is not significant and might change.

啥也不是