X3D Distributed Interactive Simulation (DIS) Implementation and Run-Time Discovery of New Entities using X3DOM

Abstract

New capabilities in web browser JavaScript implementations including networking, improved graphics performance, and improved speed allow the implementation of Networked Virtual Environments (NVEs) inside the web browser. An NVE can be written in JavaScript, which enables deployment in the enterprise entirely from a web server without the use of browser plugins. We discuss one implementation of this idea using X3DOM, an opensource implementation of the X3D standard written in JavaScript. The Open-DIS library for the IEEE Distributed Interactive Simulation (DIS) network protocol is used to create a partial implementation of the X3D standard’s DIS profile. Mechanisms for using the X3D DIS Profile DISEntityTypeMapping and DISEntityManager to enable run-time discovery and launching of new entities are discussed. Measurements of the capabilities and performance aspects of Websockets for network transport demonstrate excellent results.