[x3d-public] Transforms -> HAnimJoints

[John Carlson]

I’ve installed it.  Can you provide or investigate the python function
calls that I can use with  a file name that will do an import and export?
I know you can’t just export visible stuff.

This will help me a lot.

Thanks!

John

On Sat, Sep 16, 2023 at 7:33 PM GPU Group <gpugroup at gmail.com> wrote:

> 1. zip the io_scene_x3dv folder so you have io_scene_x3dv.zip
> 2. in Blender > Edit > preferences > Install button which will give you a
> file picker, pick your zip
> 3. still in preferences, make sure the box is checked to activate / turn
> it on
> Then it shows up in the File > Export list.
> If you make changes to it, re-zip, then uninstall from preferences first,
> before Install again and check box again
> -D
>
>
>
> On Sat, Sep 16, 2023 at 3:56 PM John Carlson <yottzumm at gmail.com> wrote:
>
>> Doug, basic information, like "How to export X3DV in a Blender python
>> script" is needed.  I am referring to:
>> https://github.com/dug9/BlenderX3DSupport  Please provide basic
>> information like how to run a script external to python would help.
>>
>> Something like:
>>
>> import bpy
>>
>> # bpy.ops.import_scene.fbx(filepath = "../../Tufani/LILY_7_3_BLEND.fbx")
>> bpy.ops.wm.open_mainfile(filepath="LILY_7_3_BLEND.blend")
>> bpy.ops.export_scene.x3dv(filepath="fooLily.x3dv")
>>
>>
>> I will try from the Blender GUI next.
>>
>> John
>>
>> On Fri, Aug 25, 2023 at 2:15 PM GPU Group <gpugroup at gmail.com> wrote:
>>
>>> i'm currently testing with
>>>
>>> https://freewrl.sourceforge.io/tests/26_Humanoid_Animation/BoxmanBVH_play.x3d
>>>
>>> - uses freewrl extra nodes HAnimMotionPlay : HAnimMotion and
>>> HAnimMotionDataFile HAnimMotionData
>>> https://freewrl.sourceforge.io/tests/26_Humanoid_Animation/play.x3d
>>> - a handy heads-up Proto for playing files
>>> (run,stop,rewind,end,increment,slidebar)
>>>
>>> https://freewrl.sourceforge.io/tests/26_Humanoid_Animation/BoxmanBVH_play.png
>>> and in combination with script in the above scene file I can compare
>>> specific animation frames between blender, bvhacker and freewrl, can be
>>> adapted to HAnimMotion (doesn't depend on any HAnim nodes itself).
>>> -Doug
>>>
>>> On Fri, Aug 25, 2023 at 12:44 PM John Carlson <yottzumm at gmail.com>
>>> wrote:
>>>
>>>> Yeah, I was trying to write quaternions on shoulder stuff to get from A
>>>> Pose to I Pose.
>>>>
>>>> If you have a good test suite, please share.  One thing that I found
>>>> out was you're supposed to multiply on the left of center by the quaternion
>>>> and on the right by the inverse quaternion???  Online documentation goes
>>>> all over the board.  I'm thinking of resorting to THREE.js. Maybe The
>>>> C/C++/C# SAI has something?
>>>>
>>>>
>>>> Thanks,
>>>>
>>>> John
>>>>
>>>> On Fri, Aug 25, 2023 at 1:36 PM GPU Group <gpugroup at gmail.com> wrote:
>>>>
>>>>> John, that's great we'll need you.
>>>>> I haven't worked on the blender exporter in weeks, you are welcome to
>>>>> start that HAnim export part if you like.
>>>>> https://github.com/dug9/BlenderX3DSupport
>>>>> Right now I'm struggling to load .bvh files at random with bvhacker
>>>>> https://github.com/DaveDubUK/bvhacker as a cleaning tool.  There are
>>>>> lots of recorded bvh motion files to download and use. But even bvhacker
>>>>> needs work -- for example ensuring  Y-UP (blender exports .bvh Z-UP),
>>>>> mapping to HAnim LOA names/selecting the right LOA, ARMS_DOWN default pose.
>>>>> For example when using a T-pose .bvh file (the T geometry is recorded
>>>>> in the OFFSETs field and angles are relative to that pose) on an ARMS_DOWN
>>>>> HAnim, the shoulder/arm rotations aren't correct. BVHacker does some
>>>>> channel swapping X--Y, but similar technique in freewrl doesn't work
>>>>> reliably (yet).
>>>>> SUMMARY: I'm in the same zone with the hanim transforms but stuck back
>>>>> a few steps in getting freewrl to play a .bvh with good shoulder animation.
>>>>> So stuck for a while but open to coordinating with you on HAnim and blender
>>>>> exporter.
>>>>> -Doug
>>>>>
>>>>> On Fri, Aug 25, 2023 at 12:21 PM John Carlson <yottzumm at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Doug,
>>>>>>
>>>>>> I have some code I've been working on that converts VRML Transforms
>>>>>> with DEFs to HAnimJoints.  Maybe we should collaborate on Hanim Blender
>>>>>> export. I'm also looking for something that will apply transforms to joint
>>>>>> centers, if you have something tested and separate from FreeWRL.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> John
>>>>>>
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