[x3d-public] X3D minutes 3 MAR 2022: announcements, SpotLight default values, NurbsSweptSurface NurbsSwungSurface found in FreeWrl, planning X3DOM WebXR
Michalis Kamburelis
michalis.kambi at gmail.com
Fri Mar 4 17:09:18 PST 2022
Thank you all for the good meeting!
We chose default beamWidth = pi * 3 / 16 . This corresponds to these images:
https://github.com/michaliskambi/x3d-tests/blob/master/beam_width_test_images/1_beam_pi_3_16.png
https://github.com/michaliskambi/x3d-tests/blob/master/beam_width_test_images/2_beam_pi_3_16.png
https://github.com/michaliskambi/x3d-tests/blob/master/beam_width_test_images/3_beam_pi_3_16.png
For other alternatives we considered, see
https://github.com/michaliskambi/x3d-tests/tree/master/beam_width_test_images
and attached screenshot.
For more details about Khronos certification, see my earlier mail "X3D
agenda 3 MAR 2022: announcements, Mantis issues, NurbsSweptSurface
NurbsSwungSurface, planning" on this list. The important link is
https://www.khronos.org/3dcommerce/certification/ .
Also: we didn't have time to go over that on the meeting, but I wanted
to point out my notes on particle emitter and X3DChildNode in "X3D
agenda 3 MAR 2022: announcements, Mantis issues, NurbsSweptSurface
NurbsSwungSurface, planning" . In short: X3DParticleEmitterNode should
not be X3DChildNode. The current spec is already correct.
Regards,
Michalis
pt., 4 mar 2022 o 19:03 GPU Group <gpugroup at gmail.com> napisał(a):
>
> NURBS > some test files
> http://dug9.users.sourceforge.net/web3d/tests/NURBS/
> http://dug9.users.sourceforge.net/web3d/tests/NURBS/nurbsswung.png
> http://dug9.users.sourceforge.net/web3d/tests/NURBS/nurbsswung.x3d
> http://dug9.users.sourceforge.net/web3d/tests/NURBS/nurbsswept.png
> http://dug9.users.sourceforge.net/web3d/tests/NURBS/nurbsswept.x3d
> freewrl source code for NURBS component
> https://sourceforge.net/p/freewrl/git/ci/develop/tree/freex3d/src/lib/scenegraph/Component_NURBS.c
> -Doug Sanden
>
>
> On Fri, Mar 4, 2022 at 10:19 AM Brutzman, Donald (Don) (CIV)
> <brutzman at nps.edu> wrote:
> >
> > Attendees: Anita Havele, Michalis Kamburelis, Vince Marchetti, Nicholas Polys, Dick Puk, Doug Sanden, Don Brutzman.
> >
> >
> >
> > Wow, another super-productive meeting. Thanks to everyone for an intense 70-minute session. Details follow.
> >
> >
> >
> > From: Brutzman, Donald (Don) (CIV)
> > Sent: Thursday, March 3, 2022 11:04 PM
> > To: X3D Public Mailing List (x3d-public at web3d.org) <x3d-public at web3d.org>
> > Cc: brutzman at nps.edu
> > Subject: X3D agenda 3 MAR 2022: announcements, Mantis issues, NurbsSweptSurface NurbsSwungSurface, planning
> >
> >
> >
> > 1. Regular Friday meeting Friday 08-0900 pacific, call information follows. All inputs and participation welcome.
> >
> >
> >
> > Videoconference Connectivity:
> >
> > https://us02web.zoom.us/j/81634670698?pwd=a1VPeU5tN01rc21Oa3hScUlHK0Rxdz09
> > https://zoom.us/j/148206572 Password 483805
> > https://www.web3d.org/member/teleconference-information
> >
> >
> >
> > 2. A lot of great things are happening! Announcements welcome. 8)
> >
> >
> >
> > https://www.web3d.org/x3d4
> > https://www.web3d.org/x3dv4-highlights
> >
> >
> >
> > We discussed plans for a webinar by Michalis on Physically Based Rendering (PBR) in X3D, including X3D interoperability with glTF.
> >
> >
> >
> > Steady progress has continued on x3d.py with improved duck-typing flexibility. Problems remain however with the PyPi installation of x3d.py not working properly, troubleshooting continues.
> >
> >
> >
> > NPS has access to an interest point scan that might be of interest for further projects. More details to follow next week. Preliminary visualization available at
> >
> >
> >
> > Digital 3D Scan of Sea Land Air Military Robotics (SLAMR) Lab, NPS
> > https://gitlab.nps.edu/Savage/Spiders3dPublic/-/tree/master/videos/demonstrations/SLAMR
> >
> >
> >
> > 3. We have a few pending Mantis issues (e.g. Spotlight default values) that maybe can be resolved.
> >
> >
> >
> > https://www.web3d.org/member-only/mantis/view_all_bug_page.php
> >
> >
> >
> > X3D4 Architecture
> > https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/Architecture.html
> >
> >
> >
> > We took yet-another tour through new examples, view3dscene showed great precision. Thank you Michalis for compelling and useful screenshots.
> >
> >
> >
> > The working group achieved consensus on Spotlight default values, final decision:
> >
> > beamWidth = pi * 3 / 16
> >
> > cutOffAngle = pi / 4
> >
> >
> >
> > Dick and Don will propagate this change through specification, schema/DTD/X3DUOM, X3D tooltips, autogenerated Java/Python/Turtle implementations, converters and Mantis issue tracker.
> >
> >
> >
> > Hooray! 8)
> >
> >
> >
> > 4. Problem: I’m not sure that NurbsSweptSurface and NurbsSwungSurface are well defined.
> >
> >
> >
> > X3D4 Architecture, 27 Nurbs Component, 27.4.11 NurbsSweptSurface
> > https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/nurbs.html#NurbsSweptSurface
> >
> >
> >
> > X3D4 Architecture, 27 Nurbs Component, 27.4.11 NurbsSwungSurface
> > https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/nurbs.html#NurbsSwungSurface
> >
> >
> >
> > Got better figures? No actual NURBS appear to be in the figures, just spines…
> > Got examples?
> > First-pass discussion: what needs to be done to improve these?
> >
> >
> >
> > Great news: Doug Sanden showed us an example of NurbsSweptSurface and NurbsSwungSurface in FreeWrl. He will share models, screenshots
> >
> >
> >
> > 5. Planning our next meetings
> >
> >
> >
> > 11 MAR 2022, achieving WebXR support for X3DOM
> >
> > https://www.x3dom.org
> >
> >
> >
> > X3DOM has supported WebVR in the past. Some people are apparently working on adding WebXR support to X3DOM… There are some resources available, like a migration guide.
> >
> > https://github.com/immersive-web/webxr/blob/master/webvr-migration.md
> >
> >
> >
> > Given their importance, we are talking a look at how such efforts might proceed for achieving best shared results. We will also zoom back and discuss overall plans for how X3DOM evolution will continue adoption of X3D4 features.
> >
> >
> > Michalis asks: Binary buffers in X3D, following glTF -- already in X3DOM, plans to introduce it to X3D spec? Because we should at some point :)
> >
> > Binary compression is a long-standing activity in X3D, Fraunhoffer work led to refinement of those capabilities?
> > Should we add such buffers in X3D4.1, and perhaps encourage implementation/evaluation in the near term as a Web3D Recommended Practice?
> >
> >
> >
> > Dick asks: It would be interesting to see an updated list of X3DOM support levels for each of the X3D4 components.
> >
> >
> >
> > Nicholas notes: I really liked their image based compression (POP buffers)…
> >
> >
> >
> > We will also look at MAR Working Group to see if reviving is desirable and possible.
> >
> > https://www.web3d.org/working-groups/mixed-augmented-reality-mar
> >
> >
> >
> > 18 MAR 2022, do we have complete implementations of X3D Geospatial Component in X3D4 and public implementations?
> >
> >
> >
> > https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/geospatial.html
> >
> >
> >
> > I’ll have list of open geospatial issues ready.
> >
> >
> >
> > We will determine next steps for our collaboration with Open Geospatial Consortium (OGC). For example, should we pursue 3D tiles? Any other OGC recommendation of high value?
> >
> >
> >
> > Any interest in working on OGC GeoPose for HAnim? (Numerous links follow, some are OGC member only)
> >
> > http://www.geopose.org
> > https://gisuser.com/2020/01/ogc-announces-the-creation-of-new-geopose-standards-working-group
> > https://github.com/opengeospatial/GeoPoseGuides/blob/main/reviewers_guide/pdf/geopose-reviewers-guide.pdf
> > https://portal.ogc.org/files/?artifact_id=100082
> > https://github.com/opengeospatial/GeoPoseGuides/blob/working-draft/GeoPose-Reviewers-Guide.pdf
> > https://github.com/opengeospatial/GeoPoseGuides/issues
> >
> >
> >
> > 6. Michalis gave us a quick look at Khronos Certification Program. Interesting good topic for future discussion. See his recent email for further details.
> >
> >
> >
> > https://www.khronos.org/3dcommerce/certification
> > https://www.khronos.org/3dcommerce/certification/certified-viewers
> > https://github.com/KhronosGroup/3DC-Certification
> > https://github.khronos.org/3DC-Sample-Viewer
> >
> >
> >
> > 7. As ever: no Web3D Consortium member-only information is included in these public minutes.
> >
> >
> >
> > and… wait for it again… Have Fun With X3D! Or else. 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
> >
> >
> >
> > _______________________________________________
> > x3d-public mailing list
> > x3d-public at web3d.org
> > http://web3d.org/mailman/listinfo/x3d-public_web3d.org
>
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