[x3d-public] [AI] Invitation: Agenda — AI-X3D SIG Meeting on Feb 17, 2026 AT 8:00 AM PST (GMT-8)

[John Carlson]

For those who aren’t familiar, I will try to outline the requirement for @,
- and # property prefixes in X3D JSON.

@ is for non-MFNode, non-SFNode fields.
- is for MFNode and SFNode fields.
# is for comments and source code—shaders and scripts.

The problem is that when you want to access, say geometry or appearance,
you have to do:

shape[‘-appearance’] instead of shape.appearance.

AFAIK, shape.-appearance just doesn’t work.

Similarly,

transform[‘@translation’]

vs

transform.translation

And again, transform. at translation doesn’t work.

I understand there might be problems with this “new” approach.  Let’s try
to lay out pros vs cons.

I think my current goal is to make parsing and generation of JSON easy.  My
thought is to take out the @ and leave - and #.   We already have examples
of that in the X3D node.

What do you think?

John

On Mon, Feb 16, 2026 at 7:55 PM John Carlson <yottzumm at gmail.com> wrote:

> As one can see from this example code, the property prefixes @, # and -
> aren’t necessary in X3D JSON:
>
> https://github.com/coderextreme/my-second-react-three-app/blob/main/src/App.jsx
>
> Let’s think about removing these from X3D JSON.  We need to consider
> performance and ease of use and development.   If there’s no need, why did
> we invent the prefixes, to make JavaScript and TypeScript developers tear
> their hair out?
>
> Thanks!
>
> John
>
> On Mon, Feb 16, 2026 at 6:47 PM John Carlson <yottzumm at gmail.com> wrote:
>
>> If there’s time on the agenda, I’d like to present a beginnings of an
>> “X3D JSON” viewer/editor developed with AI using React and THREE.js with
>> WebGPU renderer.  This is quite different than the three-x3d-loader
>> previously presented, and is along the lines of AFrame but  not even
>> Interchange profile.
>>
>> There’s obviously a lot more work to do.
>>
>> Thanks!
>>
>> John
>>
>> On Mon, Feb 16, 2026 at 4:47 PM Anita Havele via AI <ai at web3d.org> wrote:
>>
>>> Anita Havele <anita.havele at web3d.org> has invited you to Agenda —
>>> AI-X3D SIG Meeting on Feb 17, 2026 AT 8:00 AM PST (GMT-8)
>>>
>>> --
>>> AI mailing list
>>> AI at web3d.org
>>> http://web3d.org/mailman/listinfo/ai_web3d.org
>>>
>>
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