[x3d-public] X3D minutes7 May 2021: X3D4 architecture ballot, HAnimJoint stiffness, unquoted MFString values

[John Carlson]

Kubuntu 20.10 is at NetBeans 10.   Do you recommend standalone X3D-edit or
downloading a Debian package?

On Fri, May 7, 2021 at 5:06 PM Don Brutzman <brutzman at nps.edu> wrote:

> I hope that everyone is well.
>
> 1. New business
>
> Upcoming:
>
> a. JSON Schema automation of John Carlson patterns.
>
> * [x3d-public] JSON schema or ECMAScript API first?
>    https://web3d.org/pipermail/x3d-public_web3d.org/2021-May/015146.html
>
> b. X3D-Edit 4 beta testing: standalone application is improving, embedded
> NetBeans modules still broken.
>
> * X3D-Edit 4.0 Authoring Tool for Extensible 3D (X3D) Graphics
>    https://savage.nps.edu/X3D-Edit
>
> ---
>
> 2. X3D4 Architecture committee draft (CD) ballot comments submitted to
> ISO/IEC SC24.
>
> - Preparation: ISO editors (Puk, Brutzman) to keep adding draft prose to
> Mantis
> - Preparation: X3D working group will be asked to consider technical
> issues.
> - The sheer volume of comments means that editors resolution will take
> some time.
> - Expectation once ballots received and comments addressed: either another
> round of CD, or next Draft International Specification (DIS).
>
> Discuss expected delays in SAI specifications: original 19775-2 then
> language bindings and file encodings won't be able to occur on the original
> fast timeline we had hoped for.  Must address X3D4 Architecture first.
>
> ---
>
> 3. XMP metadata examples, working to match corresponding Semantic Web
> queries
>
> We explored a variety of capabilities being explored.
>
> *
> https://x3dgraphics.com/examples/X3dForWebAuthors/Chapter15Metadata/XmpMetadataEmbeddedIndex.html
>
> *
> https://x3dgraphics.com/examples/X3dForWebAuthors/Chapter15Metadata/XmpMetadataSupportX3D.pptx
>
> Vince examples
>
> *
> https://www.dropbox.com/s/amrsl4wur8092sv/Alternative%20XMP%20to%20X3D%20results.txt?dl=0
>
> Vince noted how XMP is not about a file per se, but is actually about a
> resource.  Often they are the same but not always, for example when the XMP
> resource consists of multiple data files/sources.
>
> It is interesting to think about how we might map multiple XMP "packet"
> (i.e. the XMP term for metadata structures) within X3D directly, just as
> can be done for JPEG audio video etc.
>
> Interesting progress/challenges!
>
> ---
>
> 4. Mantis issue review.
>
> a. HAnimJoint stiffness field, SFVec3f rather than MFFloat, correct default
>
> * https://www.web3d.org/member-only/mantis/view.php?id=1113
> * https://www.web3d.org/member-only/mantis/view.php?id=1116
>
> - make X3D spec consistent with HAnim, both for type SFVec3f and value [0
> 0 0]
> - always a 3-tuple, default 0 0 0 (not 1 1 1 which is immovable stiffness)
> - improved wording in HAnim spec for clarity
>
> Please expect corresponding changes to X3D XML Schema and DTD, X3DUOM etc.
> with testing in progress...
>
> Found that only change needed in these tools was default values, now
> checked in and deploying tonight.
>
> ---
>
> b. Unquoted SFString values in MFString attributes for XML encoding
>
> Multiple experimental examples in the MetadataSet/MetadataString for XMP
> above.
>
> No need to rush this - will pursue next week.
>
> ---
>
> Step by step.  Have fun with X3D!  8)
>
> all the best, Don
> --
> Don Brutzman  Naval Postgraduate School, Code USW/Br
> brutzman at nps.edu
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
> X3D graphics, virtual worlds, navy robotics
> http://faculty.nps.edu/brutzman
>
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>
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