[X3D-Ecosystem] Castle-model-converter HAnim glTF to X3D

[John Carlson]

I think Don's right.  The Walking Alien model in question has no centers
for joints.  Only translations.  Obviously, this is non-standard, but
perhaps we need to handle it.

I suggest we pause, and only view the Walking Alien as .glTF for now, or
just in Sunrize/X_ITE.

Does that seem reasonable?

I can convert translations to centers, but that's probably not going to
work.

Holger can revisit the glTF to X3D HAnim mapping with x3d-tidy with the
appropriate HAnim group.

John

On Mon, Sep 1, 2025 at 4:01 PM Don Brutzman <don.brutzman at gmail.com> wrote:

> Nobody has done a mapping between GLTF avatars (apparently still at work
> in progress) and X3D HAnim.   So writing a converter without having a
> design doesn’t seem very sensible. First things first, please. When GTF is
> stable and ready, that will be good work for HAnim working group to
> consider together.
>
> all the best, Don
> --
> Don Brutzman
> X3D graphics, virtual worlds, Navy robotics
> https://faculty.nps.edu/brutzman
>
>
> On Mon, Sep 1, 2025 at 12:51 John Carlson via X3D-Ecosystem <
> x3d-ecosystem at web3d.org> wrote:
>
>> Michalis, where are we in respect to converting glTF to X3D with
>> castle-model-converter, especially HAnim?  I recall you were going to add
>> something to ease post processing into HAnim, but I forgot the details.  I
>> am having issues with x3d-tidy output that views in Sunrize, but is all
>> stretchy in castle-model-viewer.  I can use
>> castle-model-converter, but I lose HAnim in that case, so I’m looking to
>> do some post processing.
>>
>> See the WalkingAlien* models here,
>> https://github.com/coderextreme/HAnimUtilityKit, convert glTF to X3D,
>> then look for and HAnim in the output.   Joe is pushing for something
>> viewable in both Castle and Sunrize, and I don’t have a solution yet, even
>> ignoring HAnim (what’s generated from Castle looks horrible in Sunrize as
>> well).
>>
>> I will work on Castle converter stuff probably in a few hours.
>>
>> I think you probably want a ticket, but I don’t recall the old ticket
>> resolution.
>>
>> Thanks,
>>
>> John
>> --
>> X3D-Ecosystem mailing list
>> X3D-Ecosystem at web3d.org
>> http://web3d.org/mailman/listinfo/x3d-ecosystem_web3d.org
>>
>
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