Try it with: https://jsfiddle.net/q30eybp4/
The code looks a bit different than in my fiddle since when using glTF your model might consist of multiple 3D objects.
Try it with: https://jsfiddle.net/q30eybp4/
The code looks a bit different than in my fiddle since when using glTF your model might consist of multiple 3D objects.