I've tried to do it using the jogl-noawt library, same error.
Then I stumbled across this forum thread: https://forum.jogamp.org/Java3D-in-batc ... 39415.html
And this seems pretty much a final word: my idea is not feasible.

I think that your effort to keep the code within a MVC model is nullified by an external library.

Maybe I can port the OBJWriter to JavaScript but this is kind of another size....