[x3d-public] Fwd: X3D to Unity, Unreal, Blender, glTF, etc

[John Carlson]

More detail on previous approaches.

Could something multithreaded be done?

John

---------- Forwarded message ---------
From: John Carlson <yottzumm at gmail.com>
Date: Fri, Apr 15, 2022 at 7:24 PM
Subject: X3D to Unity, Unreal, Blender, glTF, etc


Jeff, would you be interested in helping write or design an AST in python
based off of x3d.py that would output Unreal C++ code?

See:

https://github.com/coderextreme/X3DJSONLD/blob/master/src/main/python/x3dinput.py

But in addition to parseJSON, we would have outputUnreal.

Another approach is:

https://github.com/coderextreme/X3DJSONLD/blob/master/src/main/python/x3djsonld.py

But generate Unreal C++ instead of python.

At this point, I’m just looking for the right approach.   The later is
really messy code, I think.   The former might be auto generated.

Your thoughts are welcome!

John

---------- Forwarded message ---------
From: John Carlson <yottzumm at gmail.com>
Date: Fri, Apr 15, 2022 at 6:50 PM
Subject: Member-only: X3D to Unity, Unreal, Blender, glTF
To: X3D Graphics public mailing list <x3d-public at web3d.org>


I’ve posted on this before.

Instead of writing importers/loaders, I have a suggestion that we “compile”
X3D user code to a variety of back ends, Unity, Unreal, Blender, glTF,
three.js, PlayCanvas, Babylon.js etc.

Obviously we need some kind of Abstract Syntax Tree (AST) or Intermediate
Representation (IR).  I suggest we use subclasses of X3DJSAIL and/or x3d.py
classes.

I think Don would suggest using X3DJSONLD or XSLT as a basis.   Note that
X3DJSONLD uses DOM or Python dict as IR.  I would prefer a typesafe IR.

Thoughts are welcome!   What’s a good, accomplishable approach?

Thanks,

John
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