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

[John Carlson]

I’ve seen some work on overloading functions in C, which may be worth
looking at instead of numbering functions.  I don’t have a reference right
now.

On Sat, Apr 16, 2022 at 11:20 AM John Carlson <yottzumm at gmail.com> wrote:

> 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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