[x3d-public] Exporting skin coord info (weights) from blender in VRML

[John Carlson]

Katy, I’m hoping to used the weights file format and the joint locations
format when exporting from Blender.  That will make everything super
compatible.

Probably joint rotations will not be included unless i can see how glTF
does it.

John

On Tue, Sep 12, 2023 at 6:51 PM John Carlson <yottzumm at gmail.com> wrote:

> My next project will be exporting skinCoord info either from glTF Blender
> exports or directly via a Blender python script, probably in VRML, since
> I’ve been using it.  This obviously requires joints and mesh indexes as
> well.  I will not be exporting joint rotations unless someone who has tried
> it tells me how to do it.
>
> If someone has already done HAnim export from Blender, or glTF, let me
> know.
>
> I will be using Katy’s model unless someone can send me some examples.
>
>
>
> On Tue, Sep 12, 2023 at 5:09 PM John Carlson <yottzumm at gmail.com> wrote:
>
>> Note:  I now have a working system that takes 1 (exactly one) FBX model
>> exported from Blender in both X3D and glTF formats and combines them with
>> weight information from C4D and joint locations and combines them. Y up
>> doesn't quite work yet, but that will be working soon, I hope.  I will
>> start work on converting and adding animations, probably using the glTF
>> Blender export. This was the latest in a series of prototypes.  This one
>> significantly reduces the number of extra files, including files for mesh
>> and textures (UV).
>>
>>
>> Here are  a couple of patches I've had to make to the X3DV output (
>> patchup.pl)--there's also something with Shape I may have introduced.
>>
>> DEF coords_ME_mesh_t_Lily_RV7_Shape -> Coordinate
>> DEF normals_ME_mesh_t_Lily_RV7_Shape -> Normal
>>
>> Here is the most recent tested version (lots of Perl, no data files).
>> https://github.com/coderextreme/HAnimDecoratorAssembly
>>
>> The joint locations look like this:
>>
>> Joint Location
>> ____________________________________
>> humanoid_root
>> X: 0 m
>> Y: 0 m
>> Z: 0 m
>>
>> ____________________________________
>> [ etc snip ]
>>
>> I don't know if we actually need joint locations, since that
>> information is also being provided through glTF transforms via tovrmlx3d.exe
>>
>> Here's what the skin weights look like, all joints in one file;
>>
>>
>> <vl5>                                                   # joint
>>
>> (0) = 0.013                                          # (skinCoordIndex) =
>> skinCoordWeight
>> [ etc snip ]
>>
>> I've used an FBX file, but a .blend file may be possible.
>>
>> I am open to receiving FBX or blend files for conversion, especially if
>> they have skipping animations.  I don't know how Blender will handle them.
>>
>> I did have a lot of noise in this file, but people were complaining about
>> noise, so I just provided pure signal (which people don't like either).
>>
>> John
>>
>
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