[x3d-public] X3D meeting minutes 28 July 2022: X3D4 Scene Access Interface (SAI) review

[John Carlson]

I’m not saying this too well.   I mean producing XML, JSON or VRML, to use
with browsers.

I believe we have some Jupyter notebooks showing this.

Enjoy!

John

On Fri, Jul 29, 2022 at 3:01 PM John Carlson <yottzumm at gmail.com> wrote:

> I think there’s a potential 3rd use case for SAI, and that’s for creating
> views of the model hierarchy, for use with X3DOM and X_ITE.
>
> On Fri, Jul 29, 2022 at 12:19 PM Brutzman, Donald (Don) (CIV) <
> brutzman at nps.edu> wrote:
>
>> There was a meeting of X3D Working Group on Friday 29 July 2022 at 09-10
>> pacific.  Connection information and topics follow.
>>
>>
>>
>> Attendees: Anita Havele, Doug Sanden, Don Brutzman.  Prior review and
>> inputs: Dick Puk.  Thanks!
>>
>>
>>
>>    -
>>    https://us02web.zoom.us/j/81634670698?pwd=a1VPeU5tN01rc21Oa3hScUlHK0Rxdz09
>>    - https://zoom.us/j/148206572  Password 483805
>>    - https://www.web3d.org/member/teleconference-information
>>
>>
>>
>>    1. Doug Sanden described a lot of work he has going on with FreeWrl
>>    code review, upgrading for X3D4.  Expect to hear more on the mailing list
>>    as he progresses.
>>
>>
>>
>>    - http://freewrl.sourceforge.net
>>
>>
>>
>>    1. *Web3D 2022* Confirmation (2-4 November 2022, Paris) Call for
>>    Papers – real soon now!
>>
>>
>>
>>    - https://web3d.siggraph.org
>>
>>
>>
>> The* 27th International Conference on 3D Web Technology*, sponsored by ACM
>> SIGGRAPH <https://www.siggraph.org/> in cooperation with the Web3D
>> Consortium <https://www.web3d.org/>, is hosted by Telecom SudParis
>> <https://www.telecom-sudparis.eu/>.
>>
>>
>>
>> Important dates:
>>
>>
>>
>>    - https://web3d.siggraph.org/important-dates
>>    - *Saturday 30 July*:      Papers and Interactive Posters
>>    - *Monday August 29: *Tutorials, Industrial Use Cases, Workshops,
>>    Competition.
>>
>>
>>
>> Authors are invited to submit original work presenting fundamental
>> research, practice and experiments, or novel applications, in all areas of
>> 3D graphics on the web and related topics therein.
>>
>>
>>
>>    1. SIGGRAPH activities: multiple big events this week!
>>
>>
>>
>>    1. *Web3D Ecosystem and the Metaverse - SIGGRAPH 2022 BOF*
>>
>>
>> https://www.web3d.org/news-story/web3d-ecosystem-and-metaverse-siggraph-2022-bof
>>
>> https://s2022.siggraph.org/presentation/?id=bof_136&sess=sess335
>>
>> https://www.web3d.org/event/web3d-bof-siggraph-2022
>>
>> https://twitter.com/Web3DConsortium/status/1553065575512911876
>>
>> Join the Web3D Consortium for a discussion on how our technology
>> contributes to the Metaverse. From Interactive Real-Time 3D, to Mixed
>> Reality and Humanoid Animation (HAnim), everything we do in 3D is
>> significant to an open Metaverse. See how our members are scaling expertise
>> in 3D, Modeling and Simulation, Geospatial, Augmented Reality, and Web
>> Audio towards an open, interoperable Metaverse. Our extensible 3D
>> presentation layer brings 3D content from different domains from across the
>> WWW into rich, interactive 3D worlds.
>>
>>
>>
>>    1. *ACM SIGGRAPH Cartographic Visualization (Carto) Birds of a
>>       Feather*
>>
>> https://s2022.siggraph.org/presentation/?id=bof_101&sess=sess155
>>
>> The ACM SIGGRAPH Cartographic Visualization (Carto) session explores how
>> viewpoints and techniques from the computer graphics community can be
>> effectively applied to cartographic and spatial data sets.  Speakers
>> demonstrate their latest tools and application efforts.
>>
>>
>>
>>    1. *Immersive Visualization for Research, Science and Art*
>>
>> https://s2022.siggraph.org/presentation/?id=bof_128&sess=sess328
>>
>> Traditionally, this session is on immersive visualization systems for
>> science and research, scientific visualization information visualization,
>> art and science. Invited speakers and panel discuss newest initiatives and
>> developments in visualization space.  Presentations included Nicholas Polys
>> on durability of X3D.
>>
>> Tomasz Bednarz, NVIDIA and William Sherman, NIST
>>
>>
>>
>>    1. *Annual ISO/IEC JTC-1 SC24 meeting – progress report*.
>>
>>
>>
>> Under discussion, for all hours of day/night interspersed over a 4-week
>> period, are many topics.  X3D4, Smart Cities, VR/AR/MAR/XR,
>> virtual/augmented reality health and safety, more.  Next week will see
>> finalization of committee conclusions and recommendations.
>>
>>
>>
>>    1. X3D4 Scene Access Interface (SAI) Review
>>
>>
>>
>> Our “specification mosaic” diagram shows how all the many X3D-related
>> specifications fit together.
>>
>>
>>
>>    - X3D Graphics Standards Relationships
>>    -
>>    https://www.web3d.org/specifications/X3dGraphicsStandardsRelationships.png
>>
>>
>>
>> With the X3D4 Draft International Standard (DIS) complete and undergoing
>> national-body balloting by ISO/IEC, it is time to turn our sights on X3D4
>> SAI.  This document forms the abstract-API reference and common basis for
>> numerous other X3D APIs including EcmaScript (JavaScript), Java, Python, C,
>> C#, C++.
>>
>>
>>
>>    - Information technology — Computer graphics, image processing and
>>    environmental data representation — Extensible 3D (X3D) —
>>    - Part 2: Scene access interface (SAI) ISO/IEC 19775-2:2015
>>    - https://www.web3d.org/documents/specifications/19775-2/V3.3
>>    - X3D is a file format and related access services for describing
>>    interactive 3D objects and worlds. X3D is designed to be used on the
>>    Internet, intranets, and local client systems. X3D is also intended to be a
>>    universal interchange format for integrated 3D graphics and multimedia. X3D
>>    may be used in a variety of application areas such as engineering and
>>    scientific visualization, multimedia presentations, entertainment and
>>    educational titles, web pages, and shared virtual worlds.
>>    - This part of ISO/IEC 19775 defines the scene access interface that
>>    can be used to interact with X3D worlds both from within the worlds or from
>>    external programs.
>>
>>
>>
>> Based on review/revision of X3D SAI 3.3 in 2015, led by Dick Puk and
>> myself for Web3D and ISO, this document is pretty mature.  I have performed
>> a careful document review, available at
>>
>>
>>
>>    -
>>    https://www.web3d.org/specifications/X3dSaiReviewCommentsJuly2022.reduced.pdf
>>    (14MB)
>>
>>
>>
>> Under consideration, of general interest for future discussion:  can we
>> help distinguish between different primary use cases, namely
>>
>>    1. Browser services (the current primary emphasis),
>>       2. Script node source code (sorta implicit), and
>>       3. Simple subset API used for model creation and authoring, no
>>       live browser interactions needed.
>>
>>
>>
>> If we get clearer about those three use cases, it may help all of our X3D
>> SAI APIs be clearer and more useful.
>>
>>
>>
>> Request all interested parties look over this comments review.  Next
>> go-forward step will be putting X3D4 SAI into Github version control for
>> Web3D Consortium members.
>>
>>
>> Thanks for all input and participation.
>>
>>
>>
>> Have fun with finishing Web3D 2022 papers/posters, watching SIGGRAPH
>> videos, and (deep breath) X3D4 SAI review!  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 https://
>> faculty.nps.edu/brutzman
>>
>>
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>>
>
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