[X3D-Public] XMPP / XML schema JScript ( Networksensor )

Christoph Valentin christoph.valentin at gmx.at
Mon Nov 19 14:58:38 PST 2012

Hi Sven-Erik

Maybe EUR 0.02 from my side:

You think about "multi X3D nodes and non X3D nodes like
CarSim interfacing Mathworks Simulink."""

And you think about using an open protocol like one from the IETF.

I'm not sure about the network architecture you are aiming at (would be in-
teresting to know), but regarding the network interface within the Web3D 
I guess you would like to use something "Network Sensor" like (something 
provides event distribution from one scene instance to all instances, 
states that are stored on the server and can be modified/influenced by any
scene instance) and something for chat and avatars.

If this is true, maybe you can take advantage of the results of my
experimental(!) open source project http://simulrr.sourceforge.net .
That open source project (currently pre-alpha and currently stopped)
provides some X3D prototypes that examplify a network interface
that is more specific than the Network Sensor and hence more easy-to-use
yet experimental and of course it *uses* the Network Sensor. I do not only 
server side calculations provided by the network sensor natively, but
additionally I use what I call CBSS (Client Based Server Software) and an
arbitration mechanism that selects one scene instance to execute the CBSS.

Hence you can implement your own "server" software without changing the 

I do not mean you can use those X3D prototypes unchanged (although it could
be an interesting challenge to join or fork the sourceforge project and
implement XMPP support), but maybe you find some ideas about the interfaces
of those X3D Prototypes that are helpful for your students.

The X3D prototypes and the Concepts' Descriptions are licensed by an LGPL
so you can do derivative work without bad conscience.


I have stopped that project for personal reasons, so you need not worry 
a huge amount of updates :-)

Kind regards
> -------- Original-Nachricht --------
> Datum: Sun, 18 Nov 2012 14:16:15 +0000
> Von: Sven-Erik Tiberg <Sven-Erik.Tiberg at ltu.se>
> An: "pyth7 at verizon.net" <pyth7 at verizon.net>, "christoph.valentin at gmx.at" 
> <christoph.valentin at gmx.at>
> CC: "x3d-public at web3d.org" <x3d-public at web3d.org>
> Betreff: RE: Re: [X3D-Public] XMPP / XML schema JScript ( Networksensor )
>         Hi pyth7
>  Mybee you are right on it's a "Walking dead" 
>  But way alternative can you come up with on a open source network 
> protocol suited multi X3D nodes and non X3D nodes like CarSim interfacing 
> Mathworks Simulink.
>  Togther forming a driver simulator.
>  I'm just go 2 groups of students readdy to make this happend.
>  Can be a option to in RT transfere positions, rotation,,,, and live 
> video to handle a model car.
>  An area of applications for this projeare are supporting car testing 
> under arctic conditions.
>  So please tell me any optional protocol to use before we put more effort 
> into usiing RT-XMPP for X3D space and Matworks / Simulink MU system.
>  /Sven-Erik Tiberg
>                   From: pyth7 at verizon.net [pyth7 at verizon.net]
> Sent: Friday, October 26, 2012 2:28 PM
> To: christoph.valentin at gmx.at; Sven-Erik Tiberg
> Cc: x3d-public at web3d.org
> Subject: Re: Re: [X3D-Public] XMPP / XML schema JScript ( Networksensor )
>                                            Is this the plot for an 
> upcoming episode  of the "Walking Dead"?                               
>             On 10/26/12,  Christoph Valentin<christoph.valentin at gmx.at> 
> wrote:                 Hi Sven-Erik
>  So, when it's about the Network Sensor, we had a discussion about 
> evolution of the Network Sensor concept.
>  This was during January through March 2011, in the thread "The Network 
> Sensor is not enough".
>  Original e-mail was this:  
> http://www.web3d.org/pipermail/x3d-public_web3d.org/2011-January/001401.html
>  All the best
>  Christoph
>  -----Ursprüngliche Nachricht-----
>  Gesendet: Thursday, 25 October 2012 um 16:28:08 Uhr
>  Von: "Don Brutzman" <brutzman at nps.edu>
>  An: "Sven-Erik Tiberg" <Sven-Erik.Tiberg at ltu.se>
>  Betreff: Re: [X3D-Public] XMPP / XML schema JScript ( Networksensor )
>  On 10/22/2012 10:16 AM, Sven-Erik Tiberg wrote:
>  > Hi
>  > 
>  > Some time ago it was a tread regarding interfacing jscript to x3d 
> scenes with suggestions for Node name suggestions for routing.
>  > 
>  > Seems to remember that there are a suggestion for a group working with 
> making a Networksensor similar interface for JScript / Python.
>  > 
>  > Any tips on these items?
>  Hi Sven-Erik
>  High-water mark for the NetworkSensor node effort is maintained in the 
> X3D Basic Examples under Networking.
> http://www.web3d.org/x3d/content/examples/Basic/Networking
>  This directory documents attempts to define and build a new 
> NetworkSensor node for X3D. Although useful design progress was made by 
> the X3D working group, this work did not reach closure because 
> author-written implementations did not appear to be possible using  X3D 
> prototypes. Further implementation and evaluation work might someday be 
> pursued using an X3D browser implementation.
> http://www.web3d.org/x3d/content/examples/Basic/Networking/NetworkSensorConnectionNodes.html 
> (attached)
>  Examples of additional networking techniques for X3D can also be added 
> to this archive. Of related interest: the Distributed Interactive 
> Simulation (DIS) examples in this archive, which include native X3D 
> support for the IEEE Distributed Interactive Simulation  (DIS) 
> networking-protocol standard.
> http://www.web3d.org/x3d/content/examples/Basic/DistributedInteractiveSimulation
> http://en.wikipedia.org/wiki/Distributed_Interactive_Simulation
>  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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