[X3D-Public] [X3D] Invitation: Web3D Town Hall and X3D Interoperability Demonstration; NURBS, TextureTransform problems

Don Brutzman brutzman at nps.edu
Sun Jul 22 15:04:12 PDT 2012

On 7/21/2012 3:53 PM, Michael Aratow wrote:> Don:
> Thanks for initiating this great opportunity to show the power of standards through your interoperability demonstrations.  It is crucial to show how one piece of code can work with several different players so that developers can concentrate on content and not compatibility (look at what is happening in the mobile market).
> This is also a good chance to show where the X3D spec may have gaps and needs amendment to facilitate further adoption.
> Mike

Bingo, thanks Mike.

Authors:  we are looking for you to show your demo on your terms, then
we will see how good it looks in other players.

Please give us early notice if you think it is likely that you will participate.

In addition to demos by others, here are two sets of interesting examples.
We continue working step-by-step to improve X3D running anywhere.

a.  Vince Marchetti of the X3D CAD working group has shown that not all
NURBS component examples are shown identically by major players.  He has
further implemented improvements to the open-source Xj3D codebase which
will soon be in the primary trunk build.  Details for NurbsPatchSurface
and NurbsTrimmedSurface differences are online at

b.  The fundamental capability for ImageTexture and TextureTransform is
not consistent for different players.  This discrepancy is pretty astonishing.
Example scene and documentation:

BS Contact appears to be correct, or at least it matches the TextureTransform values given in the scene.
Instant Reality, FreeWrl and OctagaVS match each other but looks quite different.
Xj3D did not render the TextureTransform image.
SwirlX3D did not render the scene (at least on a Windows 64-bit machine).
Other players not tested, reports are welcome.


> On 7/18/12 9:56 AM, Don Brutzman wrote:
>> We are happy to announce the annual Web3D Town Hall event, open to all
>> SIGGRAPH attendees in LA on Tuesday 7 August, 1530-1700 in room LACC 513.
>> Room capacity:  100 seats (overall maybe 125 people SRO).
>> Web3D Consortium leaders will describe many ongoing activities and
>> member benefits, including goal planning for future X3D versions.
>> We are also inviting public demonstrations showing interoperable X3D content.
>> Agenda:
>> 1. Welcome to Web3D Consortium! Town Hall Progress Report (10 minutes)
>> - The big picture is getting bigger!
>> - Includes summary of Web3D Conference and SIGGRAPH Events
>> - How you can join Web3D and why it is so important!
>> - Nicholas Polys President, Anita Havele Executive Director
>> 2.  Round-robin activity updates (4-5 minutes each, 30 minutes total)
>> - X3D Specification advanced to version 3.3:  medical and volume
>>     visualization, UNITS definitions, ISO, stable evolution
>> - Declarative 3D (DEC3D) Community Group at World Wide Web Consortium (W3C)
>> - Augmented Reality (AR) with X3D working group and other industry efforts
>> - 3D Portrayal Interoperability Experiment (3DPIE) by Open Geospatial Consortium (OGC)
>> - X3DOM Achievements and Next Steps
>> - CAD Working Group:  CAD model export, elevating NURBS for mobile use
>> - Korea Chapter Update
>> 3.  Next-Generation X3D Evolution (10 minutes)
>> - Technical imperatives:  HTML5, plugins optional, mobile, other applications, etc.
>> - Can we achieve major new features while preserving critical capabilities?
>> - Opportunities for growth and breakout to the larger Web
>> 4.  Interoperability Demonstrations.  (30 minutes)
>> We invite presenters to show everyone
>> cool content, 2-3 minutes each.  Results will be posted publicly
>> on Web3D website.  Entry requirements:
>> - submit short one-paragraph summary plus 1-2 screen snapshots
>> - demonstrate an interoperability capability on the Web
>> - make one recommendation for next-generation X3D
>> - Submit proposed interoperability demos to townhall2012 at web3d.org
>> - (Best way to bribe the judges:  join Web3D Consortium!)
>> 5. Public Discussion (10 minutes). What do you think? Exciting times ahead!
>> All Web3D events are listed on our Web3D @ SIGGRAPH 2012 calendar.
>> http://www.web3d.org/realtime-3d/events/web3d-siggraph-2012
>> Feel free to forward this invite.  Looking forward to seeing you there!

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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