Object-oriented VRML for multi-user environments

Abstract

We suggest a new 3D scene description language which is a derivative of VRML (Virtual Reality Modeling Language). The language enhances the object-oriented feature of VRML, especially with respect to programming the behavior of nodes. The language no longer provides the Script node and the route. Instead, event handlers enable a node to take general actions. The event handler is included in the definition of node prototypes. The language has a feature that supports the multi-user environment. One of the design criteria is its suitability for the easy implementation of multi-user virtual environment systems. For this purpose, we propose a new structure of messages distributed among clients in a multi-user system.