[x3d-public] An annotations example and project

[Joseph D Williams]

Vincent and John and All, since John and others have been working on ways to get x3d transcoded back and forth with json and now typical .glb (GL Transmission Format Binary file as Standard json) with prescribed names and data form that either are the same or a bit different than standard x3d Node names and Field names and X3DField and X3DArrayField data types. Except of course, those gl asset blobs that represent binary data that would be computed and almost ready to be executed by an x3d player. 

*Is that too simple? 
First, does the .glb carry data that would be appropriate to import directly with maybe name changes or slightly rearranging or completing data for use in a field of a standard x3d field? 
Second, are there forms of .glb data, especially for animations, blobs that could be expected to be the same as machine-ready input created by x3d browser? 
Third, I think not likely but please let me know, are there Standard .glb data fields that are not used by x3d? Like before the great material features added in v4? 
Fourth, any other categories? 

That is why the Astronaut.glb file could be very interesting to test. This is an opportunity to start with a successful yet static model with overlaid authoring interactivity, including some binaries of big data, to be moved into x3d space, into a more complete authoring environment, provide some animations and improved, maybe even integral rather than overlaid, interactive features.

So, all we need is that graph that shows matching (direct usability) between .glb fields and x3d fields. A good AI might construct this table from schemas. In particular, what basic scenegraph of x3d nodes can receive this particular Astronaut.glb data directly? 
Well, also for some glb fields, how to complete or otherwise synthesize x3d syntax from glb data. 
Finally, to be complete, how an x3d player could use some glb essentially precomputed data to allow the x3d player to provide some functionality, like animations for an object without performing some internal computing steps. If we can add some x3d features and deliver it as .glb …

So yes, this is reasonable example and thanks for finding it.

Thanks, 
Joe

From: Vincent Marchetti
Sent: Wednesday, October 5, 2022 9:47 AM
To: Joseph D Williams; X3D-Public
Subject: Re: [x3d-public] An annotations example and project

I am not seeing the error message in viewing the astronaut.glb file, with Microsoft 3D Viewer at version 7.2107.7012.0, but I do see the error with 3D Builder

I haven't examined the internal structure of the astronaut.glb data, but it doesn't surprise me that it is  single mesh item.

The spirit of this annotation project would be to display the annotations from an externally loaded json structure without regard to the detailed structure of the 3D asset itself.

Vince


> On Oct 5, 2022, at 12:02 PM, Joseph D Williams <joedwil at earthlink.net> wrote:
> 
> 	• the underlying asset is a glTF asset
> 
> Astronaut.glb when downloaded, runs windows 3D Builder with a click and allows simple editing. Shows error ‘one or more items invalidly defined. Click to repair’ The entire thing is a single ‘item’ 
> 
> 
> 
> 
> 
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