Using aspect oriented methods to add behaviour to X3D documents

When modelling dynamic X3D worlds, the addition of complex behaviour often becomes a bottleneck of the modelling process. To ease this limitation, this paper describes how the ideas of aspect oriented programming can be applied, to automatically add node-specific behaviour to corresponding X3D nodes.The technique described in this document allows to automatically assign behaviour to existing X3D scenes. The information where to add the behaviour is specified using a point-cut language. The result of the described process is a standard conforming X3D document. The proposed approach integrates well into an iterative scene development process. It supports a clean encapsulation of the behaviour and encourages separate modelling of behaviour and geometry, and thereby increases the reusability.