A SIMPLE CONSTRAINT-BASED CAD SYSTEM

This paper describes a CAD system based on a sequential constraint-solver. The solver is using a script that stores all actions done by the user to create and manipulate a construction. Besides constraint solving this method offers the possibility to realise very helpful features like undo and redo, the easy reuse of constructions and the retroactive modification of the construction process. The system was developed as a research project at the University of Bremen (Szczepanek, 2003).