[x3d-public] Blender > Exporting rig transforms to HAnim?

Tue Jun 27 18:17:35 PDT 2023

I believe there is a repo for blender export/import.  Maybe Vince??? set it
up and can add you?

I can find a link, but it may be a private repo, not sure at this point.

https://github.com/Web3DConsortium/BlenderX3DSupport

Enjoy, if you can!

John

On Tue, Jun 27, 2023 at 4:42 PM GPU Group <gpugroup at gmail.com> wrote:

> PHASE I complete:
> I have a Cube and light exporting via the 2-step with x3d.py
> - by hacking the current x3d exporter aka OFFICIAL exporter
> x so it doesn't do anything fancy / no gltf animations or hanim yet
> x no import
> * but has gltf export/import menu, ready for phase ii
> - I have the syntax worked out for going from blender to x3d aka b2x
> - temporary name: web3d x3dv exporter
> Q. should we have it in a community git / github repo, like gltf exporter?
> If so how to set it up so multiple parties can git push?
> -Doug
>
>
> On Thu, Jun 22, 2023 at 5:13 PM GPU Group <gpugroup at gmail.com> wrote:
>
>> John,
>> x3d.py looks interesting -- the node classes have XML, JSON, HTML, VRML
>> export functions (missing equivalent import functions?)
>> - I'll study it
>> -Doug
>>
>> On Thu, Jun 22, 2023 at 4:48 PM John Carlson <yottzumm at gmail.com> wrote:
>>
>>> Check out x3d.py X3DPSAIL for python graph.
>>> Check out x3djsonld.py (X3DJSONLD) for JSON -> x3d.py structures -> XML,
>>> HTML5,VRML, etc.
>>>
>>>  x3djsonld.py needs more work.
>>>
>>> John
>>>
>>> On Thu, Jun 22, 2023 at 4:51 PM GPU Group <gpugroup at gmail.com> wrote:
>>>
>>>> A quick peek at gltf export/import: they do a 2-step conversion
>>>> blender scenegraph <=> gltf scenegraph <=> files (.gltf, .glb etc)
>>>> I've seen 2-step before, with collada exporter
>>>> I don't quite understand the need for the middle format - seems a bit
>>>> bureaucratic - but working well for them, perhaps easier to maintain 2-way
>>>> conversions per-node-class. And can export /import to different file
>>>> formats .x3dv and .x3d from same middle format. They also mention something
>>>> generated automatically from some specification.
>>>> Options:
>>>> 1. do what they do, except with a web3d python scenegraph in the middle
>>>> a) if someone has one already, use that
>>>> b) generate one from specifications
>>>> c) manually create one in python
>>>> 2. copy their bender <=> gltf part, and change the gltf <=> files part
>>>> to x3dv,x3d
>>>> x but would be missing things that gltf doesn't have but web3d does?
>>>> 3. stick with 1-step, hack / upgrade current x3d exporter using gltf
>>>> blender <=> gltf as guide to getting all the blender goodies
>>>>
>>>> 1.a) Q. does anyone have python web3d node classes suitable for a
>>>> scenegraph, or b) can generate from specs?
>>>> Thanks,
>>>> -Doug
>>>>
>>>> On Thu, Jun 22, 2023 at 2:38 PM Brutzman, Donald (Don) (CIV) <
>>>> brutzman at nps.edu> wrote:
>>>>
>>>>> I too share that Blender->X3D conversion dream, Michalis!  8)
>>>>>
>>>>>
>>>>>
>>>>> Given that X3D data types are clearly defined with thorough
>>>>> animation/interaction support, and given that you have indeed mapped glTF
>>>>> 2.0 rendering into X3D 4.0 capabilities, it is reasonable for anyone
>>>>> pursuing this effort to expect that complete success of rendering and
>>>>> animation is indeed possible.  Good to know when pursuing worthy goals.
>>>>>
>>>>>
>>>>>
>>>>> 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
>>>>>
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: x3d-public <x3d-public-bounces at web3d.org> On Behalf Of Michalis
>>>>> Kamburelis
>>>>> Sent: Thursday, June 22, 2023 9:40 AM
>>>>> To: GPU Group <gpugroup at gmail.com>
>>>>> Cc: X3D Graphics public mailing list <x3d-public at web3d.org>
>>>>> Subject: Re: [x3d-public] Blender > Exporting rig transforms to HAnim?
>>>>>
>>>>>
>>>>>
>>>>> Blender->glTF exporter from Khronos (
>>>>>
>>>>> https://github.com/KhronosGroup/glTF-Blender-IO/ , regularly synched
>>>>> to the version bundled with Blender) has great support for animations.
>>>>>
>>>>> Simple animations (changing transformations), shape keys (this means
>>>>> "CoordinateInterpolator" in X3D), skinning (H-Anim in X3D). And it supports
>>>>> some more things too :) Like working textures, PBR, custom properties
>>>>> ("metadata" in X3D).
>>>>>
>>>>>
>>>>>
>>>>> I indeed dream that someone will have time to upgrade the Blender->X3D
>>>>> exporter to add there these capabilities, and yes, looking at
>>>>>
>>>>> Blender->glTF exporter is a reasonable approach for this.
>>>>>
>>>>>
>>>>>
>>>>> Regards,
>>>>>
>>>>> Michalis
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> czw., 22 cze 2023 o 18:31 GPU Group <gpugroup at gmail.com> napisał(a):
>>>>>
>>>>> >
>>>>>
>>>>> > Thanks Michalis for info.
>>>>>
>>>>> > Q. Does another Blender exporter for another format (not x3d) export
>>>>> the rig transforms / animations?
>>>>>
>>>>> > Hypothesis: if another exporter does, then it would be possible to
>>>>> copy / adapt code from that exporter to x3d exporter.
>>>>>
>>>>> > -Doug
>>>>>
>>>>> >
>>>>>
>>>>> > On Thu, Jun 22, 2023 at 10:22 AM Michalis Kamburelis <
>>>>> michalis.kambi at gmail.com> wrote:
>>>>>
>>>>> >>
>>>>>
>>>>> >> The Blender->X3D exporter unfortunately doesn't support animations
>>>>>
>>>>> >> (of any kind - even simple transformations, not to mention skinning
>>>>>
>>>>> >> animation with H-Anim).
>>>>>
>>>>> >>
>>>>>
>>>>> >> Regards,
>>>>>
>>>>> >> Michalis
>>>>>
>>>>> >>
>>>>>
>>>>> >>
>>>>>
>>>>> >>
>>>>>
>>>>> >> czw., 22 cze 2023 o 18:16 GPU Group <gpugroup at gmail.com>
>>>>> napisał(a):
>>>>>
>>>>> >> >
>>>>>
>>>>> >> > If I make a skin and add a rig in Blender, on export, how do I
>>>>> get any rig transforms to export to HAnim along with the skin?
>>>>>
>>>>> >> > When I use the default x3d export, all I see is the skin in an
>>>>> IndexedFaceSet.
>>>>>
>>>>> _______________________________________________
>>>>>
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>>>>>
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>>>>>
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>>>>>
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