[x3d-public] Member-only: X3D to Unity, Unreal, Blender, glTF

[John Carlson]

Don, I have not been able to get any C++ .h files compiling, due to missing
afxtempl.h (previously posted).  I am dead in the water until such that
file can be identified and installed on my system.

There are also duplicate methods in C++ and C# headers reported by me and
others.

I believe progress might be made on C.   I’m on rest from surgery until
Thursday/Friday.

I assume you refer to JSON loading into X3DJSAIL using X3DJSONLD.java and
JSON conversion to Python using x3djsonld.py.            I have previously
posted about both of those.  I believe a patch needs to be made for MFVec2f
fields in x3djsonld.py, but I don’t know why it’s broken at this point.  I
 am waiting for inspiration/help.  As for Java, I have issues with the
X3DJSAIL validator for JSON used in my coderextreme x3dschema repo on
GitHub.   This validator is set up to validate the archive.  I believe a
new X3DJSAIL has been produced since I checked that last.   I am hoping we
could perhaps integrate the Ant script and Validator.java code into your
build, as part of the JSON examples build?   Let me know.  I can meet after
the 21st.  I'm fairly sure I am still limited to C/C++/C#/node/nashorn
folders on sourceforge?

I agree that es6x3d remains a work not in progress.  Further work on this
will require someone familiar with SAI and X3D.  I’m more of an app
programmer than a library programmer.  As for starting with a pre-existing
stylesheet, I would prefer working with something that generates a
stylesheet instead of hand-coding.   Also see previous posts about i18n,
accessibility, and l10n of stylesheets, to support multiple languages.

I am working towards getting something renderable.  I have seen that the C#
SAI looks like it can render to Unity???  But haven’t seen any rendering in
C/C++.

I believe targeting rendering non-X3D players is desirable, but I’ve only
seen it for Blender.  Was the Blender code autogenerated, boom presto?  I
would also be interested in Andreas’ work with Babylon.js.  Is there some
GPT-3/AlphaCode magic happening?

Perhaps there is a product from the semantics working group I haven’t seen?

John
On Fri, Apr 15, 2022 at 10:37 PM Brutzman, Donald (Don) (CIV) <
brutzman at nps.edu> wrote:

> John, we have X3DUOM which is fully complete and correct model of X3D data
> structures.
>
> We are successfully generating Java and Python with ~100% correctness,
> fixing any stray edge cases when they emerge.
>
>
>
> We have potential to do exactly the same with JSON and JavaScript, as you
> know through your impressive efforts..
>
>
>
> The C, C++ and C# specification drafts and example codebases have been
> posted for comment.  Who is testing them?
>
>
>
> You don’t need to change other codebases, just get our code patterns
> correct for each programming language, then when ready autogenerate the
> loader/setter classes.  Boom presto done, everywhere that wants it.
>
>
>
> Have fun with X3D!  8)
>
>
>
> all the best, Don
>
> --
>
> Don Brutzman  Naval Postgraduate School, Code USW/Br
> brutzman at nps.edu
>
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA
> +1.831.656.2149
>
> X3D graphics, virtual worlds, Navy robotics https://
> faculty.nps.edu/brutzman
>
>
>
> *From:* x3d-public <x3d-public-bounces at web3d.org> *On Behalf Of *John
> Carlson
> *Sent:* Friday, April 15, 2022 4:50 PM
> *To:* X3D Graphics public mailing list <x3d-public at web3d.org>
> *Subject:* [x3d-public] Member-only: X3D to Unity, Unreal, Blender, glTF
>
>
>
> 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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