VRML++: A language for object-oriented virtual-reality models

We present a new object-oriented language called VRML++ which extends the Virtual Reality Modeling Language (VRML 2.0), a specification language for interactive three-dimensional scenes on the internet. The new features of VRML++ are classes and inheritance, an, improved type system, and dynamic routing. As a net result we get type-safe inclusion polymorphism and dynamic binding. We argue, that these features are essentials of object-oriented programming languages. Furthermore using these new features it is possible to define abstractions of routing structures which we call connection classes. VRML++ increases re useability, readability, and extensibility of specifications while reducing mn-time errors. Finally we discuss our implementation of VRML++.