[x3d-public] X3D working group agenda, 9 JAN 2020

Don Brutzman brutzman at nps.edu
Fri Jan 10 06:32:13 PST 2020

Agenda: ongoing review of progress and issues list for X3Dv4.

Dick and I then continued our review with Michalis on draft specification for X3D PBR.


The X3D Graphics Working Group addresses all X3D specification issues and coordinates the technical development of future improvements.

Members and invited experts are welcome.  We are an open organization. Please let us know if you have an important topic to present or discuss.

Each week we report out both public and member-only information - membership has value.  To become a Web3D Consortium member:
      Join the Web3D Consortium

Teleconference information appears below.


0. *Agenda check*

Welcome everyone, we are well on our way to finish X3Dv4.  8)

Previous minutes:

* [x3d-public] X3D Working Group minutes 3 JAN 2020: X3Dv4 progress; PointProperties and points/lines/mesh, OBJ


a. Excellent call with IEEE 3D Body Processing group yesterday

b. New implementation efforts to discuss?

- X3D XML Schema/DOCTYPE/Schematron and example updates
- Listing assets on X3D Implementations page
- Additional items here

c. Web3D 2020 Conference status


1. *X3Dv4 Progress Review*

Major pieces of work in progress and highly mature include:

a. glTF lighting and physically based rendering, Michalis Kamburelis

b. X3D Sound Component and HTML Audio, Athanasios Malamos and Efi Lakka

c. Projective Texture Mapping (PTM), Kwan Hee Yoo

d. Many specification improvements and additions.

Key references:

[1] X3D Version 4 Overview

[2] X3Dv4 Highlights

[3] X3Dv4 Implementations Status

[4] Draft X3Dv4 specification from SIGGRAPH, August 2019

[5] Mantis Issue Tracker (requires 2 sets of member login)

You can quickly see all X3Dv4 issues (with tag V4.0) by selecting the filter "X3Dv4" within mantis.

As specified in the reference pages, our next steps of implement/evaluate over the next quarter include
- finished specification prose in github,
- addressing all mantis issues,
- proper example X3D models available for each node/field,
- validation tools confirming examples are satisfactory,
- two or more implementations (X3DOM and X_ITE, others),
- consensus by working group, approval by Web3D Consortium, submission to ISO.

Here are refined milestones from X3Dv4 Implementations Status page:

_Milestones Timeline_

* /26-31 July 2019/.    Publish draft specification plus examples and implementation updates at Web3D2019/SIGGRAPH 2019 conferences.
* /16 December 2019/.   Working group accepts X3Dv4 new-technology submissions, with rich capability set publicized for implementation work.
* /31 January 2020/.    Specification Editors provide ISO Working Draft on github for use and confirmation by Web3D Consortium members.
* /First quarter 2020/. Implement new components in X3D players, evaluate scene examples for conformance. Publish weekly progress updates.
* /When completed/.     Completed ISO Working Draft submitted to X3D Community, Web3D Consortium members, Web3D Board of Directors.
* /BoD approval/.       Working Draft upgraded to Committee Draft and submitted with NWIP to ISO.
* /Sequential updates/. Specification updates for 19775-2 Scene Access Interface (SAI), file encodings (XML, ClassicVRML, JSON etc.) and language bindings (JavaScript, Java, Python), and X3D Semantic Web (possibly 19775-3).


2. *IPR statements* - still pending, Anita is communicating with each individual involved.


Terms of membership and a requirement for contributing technology is to sign the Web3D Intellectual Property Rights (IPR) Policy asserting that no known patented technology subject to licensing is being submitted.


Web3D Executive Director Anita Havele has checked past records.  Since many of these were signed years ago, we simply plan to ask everyone contributing to X3Dv4 specification to again assert that they are following the IPR policy.


3. *Web3DUX Working Group Proposal*


Thanks for all review of Web3DUX Working Group Proposal and draft Charter.  Dr. Feng Liu and Dr. Amela Sadagic have submitted to Web3D Board of Directors, feedback from Board of Directors review is expected soon.

[5] [x3d-public] 27 NOV 2019 - Web3DUX working group meeting minutes and Web3DUX working group proposal review


4. *December Events* include much tremendous outreach!  Here they are again:

[6] Semantic Web Pro (SemWeb.Pro)

[7] IITSEC 2019 Tutorial Distributed Interactive Simulation (DIS) 101

[8] Collaborative 3D Visualization for Ashore, Afloat and Expeditionary Readiness Workshop

All tweets finished, outcomes message being sent to participants.

Planning on summary announcement for home page.


5. *Mantis Issues*

We have 78 issues tagged as X3Dv4.0.  Current issues list attached last week.

Our primary work today is reviewing the list and planning whether other focus topics are needed this month.

* Mantis Definitions

* Mantis Workflows

Priority: issues that affect schemas, validation and examples.

Next up:

a. Mantis 1271: add hidden field to Shape

b. Status for unassigned tasks (will filter and display on screen)

c. Next issues to pursue... request participants identify one issue and be prepared to address it each week.


6. *Teleconference Information*

We are using the Web3D Consortium Zoom channel, to good effect.  It allows use of internet audio, screen sharing and chat with links.

We meet regularly on Fridays 0800-0930 pacific.  To join the teleconference:

      Join URL https://zoom.us/j/148206572 for X3D Working Group

One tap mobile
* US (New York) +19292056099,,148206572 #
* US (San Jose) +16699006833,,148206572 #

Dial by your location, using (nine-digit number from Join URL above)

* US (New York) +1 929 205 6099
* US (San Jose) +1 669 900 6833

Additional information

      Web3D Teleconference


Participants will review the public minutes to confirm that no member-only information is present.

Lots of effort continues.  Thanks to everyone contributing, your work is important to all of us.

Everyone else, please consider how you are helping... there are things TODO for everyone.

We will schedule several small items and one more significant Mantis issue each week, repeating until done.

Have fun with X3D!

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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