[x3d-public] Seed for a project

[John Carlson]

That sounds pretty awesome, if we could do BVH output from a web3d browser.

Does anyone do this yet?

Thanks!

John

On Sat, Aug 12, 2023 at 12:00 PM GPU Group <gpugroup at gmail.com> wrote:

> > 1) provide a way to convert X3D nodes and ROUTEs to BVH with animation.
> This will require converting routes/segments over time to translations and
> rotations. Help is requested.
> One fuzzy idea: use the nodes and routes to animate, and capture the
> animation at a choke point in the web3d browser. A good choke point is
> where the browser applies BVH animations to the HAnim. In freewrl there are
> a few spots where it calls update_jointMatrixFromMotion() and in theory
> there could be another call there update_MotionFromJointMatrix() which goes
> the other way, converting a joint matrix into a bvh motion for recording to
> a file, with frame timestamp.
>
>
> On Sat, Aug 12, 2023 at 10:14 AM John Carlson <yottzumm at gmail.com> wrote:
>
>> Here's the seed for a Java (possibly X3D-Edit) project. A graph/grid
>> editor.
>>
>> https://github.com/coderextreme/impact.dir/tree/master/impactVL
>>
>> I was thinking of adding:
>>
>>  JSON/XML/VRML/BVH/MediaPipeHolistic/JavaSerialized/OpenUSD  I/O, beyond
>> native.
>>
>> There seems to be a slight issue with input right now, at least with the
>> sort* input files in Impact.java
>>
>> Make a copy of a file externally before modifying in the tool, there's no
>> way to save to another file currently in Impact.java.
>>
>> The goals are:
>>
>> 1) provide a way to convert X3D nodes and ROUTEs to BVH with animation.
>> This will require converting routes/segments over time to translations and
>> rotations. Help is requested.
>>
>> 2) provide a way to visualize ROUTEs with Java (anyone else have
>> something?)
>>
>> 3)  provide different naming convention for different I/O
>>
>> 4) take input from MediaPipe Holistic (Python) and convert to BVH.
>>
>> 5) provide a way to debug X3D events in Java.
>>
>> There are already 2 different visualizations. I hope to add more.  One
>> (Cell4x4) is based on Jed Donnelly's graphics (see images folder) scanned
>> from his Impact project (hence the name). I would like to use this with
>> permission, but I haven't heard from him.  The Java is mine, based on his
>> original idea (not his or other's code).
>>
>> Note that I haven't tested the Cell.java program much recently.
>> Impact.java is what Jed called the "Flow" or "Floweth" language, but his
>> idea was to create a textual language.  But a challenge is making the 2
>> visualizations to work together.  The textual language will be implemented
>> in X3D/BVH. I don't have a reason to create a new language, nor do I want
>> to.
>>
>> Note that I already have the idea for "Inlines" or expanding nodes into
>> another window.  I'm not sure how well it's implemented.  I'm not sure
>> about I/O of nested nodes right now.
>>
>> This seems like a lot of fun, and maybe even useful, as opposed to X3D
>> JSON.
>>
>> Ant and Makefiles provided.  Not gradle. Too many garbage files to worry
>> about iwith gradle--I'm not sure why they have all of them. If someone
>> wants to provide maven or gradle, that would be cool. Ant is okay in Git
>> for Windows.  If I have to fall back to Makefiles, I can use Cygwin.
>>
>> Any problems, file an issue with
>> https://github.com/coderextreme/impact.dir/issues.  There's one waiting
>> for you to close, Jed.
>>
>> John
>>
>>
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>>
>
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