Basic HTML version of Foils prepared 27 June 97

Foil 21 Architecture of the WebDIS Prototype at the NPS - Front-End

From Distributed Simulation (DIS,HLA) HPCC and the Object Web Visit to ARL Aberdeen -- June 5-6 97. by Wojtek Furmanski *

Front-end is provided by Netscape running one vehicle simulation applet on each node and by Cosmo Player VRML2 browser displaying the multi-vehicle simulated world.
Java applet propagates local vehicle and communicates via the bridge daemon with other nodes, sending local vehicle PDUs and reading remote vehicles PDUs.
Java applet and VRML browser interact via EAI (External API) as specified by SGI/Cosmo Player add-on to the VRML2 protocol. JavaScript is used to acquire handle to the VRML scene and LiveConnect is used to pass this handle to the Java applet.
Applet performs dynamic real-time updates of the scene graph based on local vehicle simulation and remote vehicle locations received via PDUs.



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