[x3d-public] FBX to X3D

[Michalis Kamburelis]

About the Godot exporter ( https://godotengine.org/fbx-import/ ) using
Autodesk FBX SDK: Indeed it sucks, and they say it openly in their
docs. And this is a general problem with FBX. You can read FBX in 2
ways:

1. You use proprietary Autodesk FBX SDK

2. You reverse-engineer FBX and support only a subset of its features.

>From what I know, Godot developers explored various options to handle
FBX throughout Godot history. They tried to use original FBX2glTF,
Assimp, own code (see the link from
https://godotengine.org/fbx-import/ -- """Relying on reverse
engineering was attempted in the past, but it turned out to be too
unreliable."""). Their conclusions after user feedback was
unfortunately that approach AD 2 will never be good enough for users.

So the AD 1, while it relies of prioprietary Autodesk FBX SDK and it
sucks, seemed the only option to have Really Good Support for FBX.

Blender's FBX importer uses reverse-engineering. But if it works for
you (for the features you need), naturally go ahead and use it.

The bottom line is: stay away from FBX as much as you can. Use X3D,
use glTF, use open 3D standards. (But I guess you have no choice,
hence this thread...)

Note that tovrmlx3d doesn't generate H-Anim nodes. Neither does
Blender. But I understand you will "sum up" existing H-Anim nodes into
some content converted from FBX / glTF.

Regards,
Michalis

wt., 5 wrz 2023 o 10:31 John Carlson <yottzumm at gmail.com> napisał(a):
>
> Blender 3.6.2 is working superbly now to import FBX and export gltf.  Now I just need to add visualization to my HAnim skeleton i create from the VRML output from converting gltf to X3DV using tovrmlx3d.pl.  Does anyone want to follow my trail?
>
> We will get HAnim from Blender one way or another.  Another feature to add is checking for approved joints, segments and sites.
>
> John
>
> On Mon, Sep 4, 2023 at 6:43 PM John Carlson <yottzumm at gmail.com> wrote:
>>
>> Blender isn't working, I will try to be patient.
>>
>> John
>>
>> On Mon, Sep 4, 2023 at 6:31 PM John Carlson <yottzumm at gmail.com> wrote:
>>>
>>> Michalis,
>>>
>>> Those aren't good options, at least on windows.  The first one has this warning:
>>>
>>> "Precompiled binaries include proprietary code from the Autodesk FBX SDK 2020, which is distributed under the Autodesk LICENSE AND SERVICES AGREEMENT.
>>>
>>> By downloading and using this tool, you agree to the terms of that Autodesk proprietary license."
>>>
>>>
>>> Not going there.
>>>
>>>
>>> The second one has a reference to another github, which make contain FBX SDK, I didn't look into it much
>>>
>>> Assimp doesn't compile, viewers are pretty defunct and cloudflare is blocking open3mod.com or something.
>>>
>>>
>>> Assimp is no longer recommended on x3d resources.
>>>
>>>
>>> Not good choices. A better choice might be Blender to glTF, I'll look into it
>>>
>>>
>>> I'll
>>>
>>>
>>> On Mon, Sep 4, 2023 at 11:18 AM Michalis Kamburelis <michalis.kambi at gmail.com> wrote:
>>>>
>>>> One way I know is to convert FBX to glTF using
>>>> https://github.com/godotengine/FBX2glTF .
>>>>
>>>> Then convert glTF to X3D, e.g. using CGE/view3dscene or X_ITE.
>>>>
>>>> Indeed it's a double-conversion, two points where things can get lost
>>>> / wrong. But I don't think we have a more direct approach at this
>>>> point if you want to get X3D in the end.
>>>>
>>>> FBX2glTF is developed by the Godot game engine devs,
>>>> https://godotengine.org/fbx-import/ . I fully second their notion is
>>>> the documentation to *avoid using FBX as much as you can*, it's a
>>>> closed format. All open standards (X3D, glTF, USD...) are really
>>>> better. But sometimes we don't have a choice, which I guess is also
>>>> why you ask :)
>>>>
>>>> Other ways: use https://github.com/facebookincubator/FBX2glTF (no
>>>> longer maintained actively, Godot fork is more active) or using
>>>> https://github.com/assimp/assimp . They also offer FBX -> glTF at
>>>> best, so you'd still need 2nd conversion glTF -> X3D.
>>>>
>>>> Regards,
>>>> Michalis
>>>>
>>>>
>>>>
>>>> pon., 4 wrz 2023 o 18:07 Joe D Williams <joedwil at earthlink.net> napisał(a):
>>>> >
>>>> > How to get .fbx into x3d?
>>>> > Joe
>>>> >
>>>> >
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