Behavior Modeling in Design System Development

We describe the development approach for a software environment to support the early phases in building design called SEED. The combination of capabilities offered by SEED to designers is novel and includes the integrated handling of solution prototypes. We give the reasons for using an object-oriented software engineering approach in the development of the system, which starts with a comprehensive behavioural model of the system from the user's perspective based on actors and use cases. We illustrate results from the first development phase and sketch the next phases. At the time of the CAAD Futures'93 conference, we will be able to report our experience in developing a first system prototype and to demonstrate the prototype