Gltf loader/exporter convert all groups to object3d

Questions
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1

During exportation/importation of a scene in gltf format, so using gltf.exporter/loader all the groups in my scene are converted in objectd3d.
Now since i base my script on the difference between group and object3d this is a problem for me.
How can i change this beahviour?
Or, as a last resort, is there a way to convert object3d to group without moving all elements from one to the other?
Thank you.

2

The glTF format does not have all of three.js’s class types, so that information is lost during serialization.

An alternative would be to put something in object.userData like this:

object.userData.myCustomType = 'group';

That data will be preserved after export/import, but it will still be an Object3D. If you want to convert it you will have to create a new Group and move the children from one to the other.

3 Likes
3

Thanks for the answer. I will use your solution.