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 *
1 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.
2 Java applet propagates local vehicle and communicates via the bridge daemon with other nodes, sending local vehicle PDUs and reading remote vehicles PDUs.
3 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.
4 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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