gLTF merge layers into ONE object, how can I retain the seperate layer objects?

pissang / clay-viewer

3D model viewer with high quality rendering and glTF2.0/GLB export

https://pissang.github.io/clay-viewer/editor/

BSD 3-Clause "New" or "Revised" License

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Open jkiss opened 5 years ago

jkiss commented 5 years ago

In the OBJ format, there arre 4 objects, but there only one after convert by clay-viewer, how can I keep the seperation?