[X3D-Ecosystem] RawKee - Just a teaser...

[John Carlson]

If you send me your data files. I can try to fix them and identify fixes so
that they fit into the X3D Ecosystem better.  I have specific suggestions
on Conan, but it will take me some time to get a "good" data file that
passes validation, because Python isn't giving me a good report.  Yes, my
x3d.py Serializer is written in EcmaScript, see:
X3DJSONLD/src/main/node/PythonSerializer.js
at master · coderextreme/X3DJSONLD
<https://github.com/coderextreme/X3DJSONLD/blob/master/src/main/node/PythonSerializer.js>
But I'm currently going with Don's X3dToPython.xslt so I can provide
feedback.  The PythonSerializer.js actually serializes DOM to Python source
code (not the internal scenegraph).  X3DJSONLD.js is used to convert JSON
to DOM.

We will try to support you by validating and repairing files as best as we
can, sounds like a good division of labor.

On Fri, Aug 22, 2025 at 11:32 AM Bergstrom, Aaron <aaron.bergstrom at und.edu>
wrote:

> John,
>
>
>
> Well… Don specifically told me not to make any changes to x3d.py, so I
> have not attempted to make any x3d.py customizations. And after looking at
> the guts of the x3d.py code, I really don’t have any desire to do so anyway.
>
>
>
> I feel that x3d.py’s complexity is outside of my Python programming
> skills. So much so, that I feel that I would likely break x3d.py with any
> customizations I tried to make.
>
>
>
> Basically, my python Kung Fu is not strong in that area, yours is stronger.
>
>
>
> I feel that I have my hands full pulling together an understanding of Maya
> MEL Script, Maya Python API’s, the Maya’s DAG and Dependency Graph, the
> various Maya ShaderEngines/Renders, HTML/Web Browser/Ecmascript tech,
> x3d.py, the X3D Scenegraph, the X3D Spec in general, the HAnim Spec, the
> various encoding styles, and implementing all that for the exporter.
>
>
>
> Getting into the stylesheet stuff is something I really don’t feel that I
> have the mental resources for.
>
>
>
> My current process is to leverage x3d.py for most exporting needs, and
> then test the output in Sunrize and X_ITE as they are easy to work with.
>
>
>
> However, I did write my own python script that writes x3d.py scenegraph
> out to disk in the various XML, HTML (X3DOM), VRML, and JSON encodings of
> X3D. It would be nice to add a compressed/binary encoding of it as well,
> though I’m not sure what the current preferred compressed/binary version of
> X3D is.
>
>
>
> And I’d like work on creating loaders as well… at some point in the
> future. I currently have a rudimentary loader for HAnim built into RawKee
> for Maya.
>
>
>
> Is the PythonSerializer.js script written in Ecmascript? When you say it
> converts JSON to Python, do you mean x3d.py objects? How does an ecmascript
> file convert JSON to Python? I guess I’m not understanding how that works
> if it is a Ecmascript.
>
>
>
> Outside of creating X3D content for our own projects, I see my Ecosystem
> niche as focusing on the *“Authoring Tool (AT) to X3D.py to AT”* data
> conversion process/pipeline.
>
>
>
> I have a strong understanding of this process for Maya [aka Maya -->
> Python: X3D.py], so I plan to leverage that work and port the AT to X3D
> pipeline to other AT’s that support plugin development with the Python
> language.
>
>
>
> My next AT target for an exporter plugin is Houdini, on which I’ve already
> begun to work. The plan is to build a RawKee exporter for Houdini in
> parallel with the RawKee exporter for Maya. In fact, because of Houdini’s
> HDA engine for Maya, it makes sense to do so.
>
>
>
> Admittedly, this may require me to learn some Houdini VEX as well, even
> though Houdini supports Python. But this isn’t any different that Maya
> requiring an understanding of the Maya Embedded Language as well as Maya
> Python.
>
>
>
> Aaron
>
>
>
> *From:* John Carlson <yottzumm at gmail.com>
> *Sent:* Friday, August 22, 2025 2:16 AM
> *To:* X3D Ecosystem public discussion <x3d-ecosystem at web3d.org>
> *Cc:* Bergstrom, Aaron <aaron.bergstrom at und.edu>
> *Subject:* Re: [X3D-Ecosystem] RawKee - Just a teaser...
>
>
>
> Aaron,
>
>
>
> Ah, I see you’re using the lastest x3d.py, terrific.   I am working with
> that as well.   Have you made changes to x3d.py?
>
>
>
> I am using X3dToPython.xslt to generate Python from XML.  Have you tried
> the stylesheet or the way X3DJSAIL generates python from XML?   I also have
> a PythonSerializer.js I used to convert JSON to Python that’s being put to
> the test, one side from JSON being produced, and the other from the x3d.py
> API.
>
>
>
> Thanks,
>
>
>
> John
>
>
>
> On Wed, Aug 20, 2025 at 6:16 PM Bergstrom, Aaron via X3D-Ecosystem <
> x3d-ecosystem at web3d.org> wrote:
>
> All,
>
>
>
> Just sharing a RawKee teaser…
>
>
> https://drive.google.com/file/d/1Uhlqq2tdPUGuyH0MXxXBsW5MwufNOrnE/view?usp=sharing
>
>
>
> Aaron
>
> --
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>
>
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