[x3d-public] X3D meeting agenda 4 FEB 2022: Rigid Body Physics review, Projects Wish List, X3D implementation spreadsheet

Fri Feb 4 10:33:57 PST 2022

Thanks for meeting inputs John, sorry your connection wasn't working for audio today.

Responses:

  1.  Continuing progress on JSON Schema sounds great.
  2.  Please do not edit any of the specification documents that Dr. Lee submitted, we have a whole preparation process so that CSS markup of proposed/deleted/approved text can be added.  Also have QA tests automated.
  3.  If you want to collect your comments on those specs as issue lists, that will facilitate consideration.  Clarity is key.
  4.  There are a great many sources of code and pseudocode for generation geometry tessellations online.  Such code sources include X3D browsers, which are already aligned with X3D node structures, with multiple open-source implementations available.

Good luck with your work.

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

From: John Carlson <yottzumm at gmail.com>
Sent: Friday, February 4, 2022 7:39 AM
To: Brutzman, Donald (Don) (CIV) <brutzman at nps.edu>; Myeong Won Lee <myeongwonlee at gmail.com>
Cc: X3D Public Mailing List (x3d-public at web3d.org) <x3d-public at web3d.org>
Subject: Re: [x3d-public] X3D meeting agenda 4 FEB 2022: Rigid Body Physics review, Projects Wish List, X3D implementation spreadsheet

Most of this has been discussed on the mailing list already, so if you've been reading me already, by all means skip this email.

Status report.

Hi Don.  I am continuing to document JSON schema generating rules in hopes of creating an XSLT version in the future, perhaps.  I still need to document the field generator and maybe mess with indentation.   If I get home Monday from the doctor, etc, we can review, perhaps.  I am having no issues understanding the python, thank goodness.  I will work on getting the python into publishable form.

As far as C/C++/C# SAI, I have a filter which takes the <pre> text sections out of the C++ working draft, but there's still a lot of work to do.  Ideally we would create a XSLT where we could easily extract c++ data structures from X3DUOM without extra fiddling.  I posted a request to semantics-public requesting a SPARQL query runnable from python to gather dependencies for a C++ class.  Also, the C++ HTML code (I haven't investigated rendering yet) includes duplicate member functions (class field at least), which should be addressed or recognized.   This was pretty much on the first class I looked at, so I'm guessing there's more lurking.   I will continue working on the C++ after documenting JSON schema.  Slowly plogging along, but wrists are less pained, so that's a bonus.   Python code (beautifulsoup) has been posted.   XSLT has not.

When perusing the C++ interfaces HTML docs, I noticed multiple references to Java, so that should probably be addressed.

 X3DJSONLD and JSON to STL has been placed on a back burner for now.   I am seeking coworking opportunities, particularly a mathematician/geometer who can help with tessellation PROTOs for spheres, cones, cylinders, etc.  Anyone?

It would be advantageous to me if someone could point out good Node.js packages for querying XML with some examples.  I know of querySelector and querySelectorAll in HTML/CSS JavaScript.

If someone has had good results with copilot/codex/gpt-3, please share!

On Thu, Feb 3, 2022 at 12:01 AM Brutzman, Donald (Don) (CIV) <brutzman at nps.edu<mailto:brutzman at nps.edu>> wrote:
We again meet this week 08-0900 Pacific on Web3D Consortium zoom line.

  1.  X3D4 Rigid Body Physics component:  Dick Puk and I have nearly finished resolving 20 editorial comments in Mantis issue tracker.  A number of phrasing improvements are included, no design changes, updated default values for various axis fields (0 0 0 is a degenerate vector).  Further final clarifications and suggestions welcome.

     *   Mantis issue tracker (tag V4.0 Resolution, filter 'physics')
     *   https://www.web3d.org/member-only/mantis/view_all_bug_page.php

     *   Extensible 3D (X3D) v4, Part 1: Architecture and base components, Clause 37 Rigid body physics
     *   https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/rigidBodyPhysics.html

  1.  Projects Wish List continuing discussion

     *   Work with MeshLab and Blender seems especially important.
     *   Can we add "how to get involved?" to each major item.
     *   https://www.web3d.org/projects/wish-list

  1.  Is someone interested in leading updates to our X3D support spreadsheet?

     *   X3D Node Inventory Comparison
     *   https://www.web3d.org/specifications/X3dNodeInventoryComparison.xlsx
     *   https://www.web3d.org/specifications/X3dNodeInventoryComparison.pdf

  1.  Other topics of group interest... are always welcome.

Membership has value! Please consider joining Web3D Consortium.

  *   https://www.web3D.org/join

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Have fun with X3D!   8)

all the best, Don
--
Don Brutzman  Naval Postgraduate School, Code USW/Br        brutzman at nps.edu<mailto: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<http://faculty.nps.edu/brutzman>

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