Abstract
This chapter discusses the techniques by which man–computer interaction could be improved, specifically in the context of architectural applications of current computer-aided design (CAD). In this application, the object being designed is often an assembly of defined components. Even if the building is not actually fabricated from such components, it is usually conceptualized in these terms. In a conventional graphics-based CAD system, these components are usually represented by graphical icons that are displayed on the graphics screen and arranged by the user. The system described in the chapter consists of three-dimensional modeling elements which the user physically assembles to form his design. Unlike conventional architectural models that are static, that is, cannot be changed by the users and passive, that is, cannot be read by a CAD system; this model is both user generated and machine readable. The user can create, edit, and view the model by simple, natural modeling activities, and without the need to learn complex operating commands often associated with CAD systems.
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