The computer simulation of meta structures

Abstract

This paper outlines the results of a research project dealing with a dynamic prediction system for space oriented architecture in Meta Structures using interactive computer graphics techniques. Meta Structures in architecture are variable, space-enclosing, support systems that allow maximum dimensional changes with minimum effort and/or adjustment. Examples of Meta Structures range from the simple umbrella to the complex, variable support system of Skylab II. The use of real time computer graphics has been investigated to improve the design of structures which until now could only be vizualised through expensive scaled models. This investigation has initiated the development of a computing model which allows the user to interactively define a Meta Structure via linguistic and analog control and to simulate the real time motion of structures that are considered to be part of the indeterminate set. The user may deploy a designed structure in real time observing the transformations on the Vector General 3DR graphics display which is controlled by a PDP 11/45 using the GRASS language developed by Dr Thomas A. Defanti at the University of Illinois, Chicago Circle. This observation can be compared to watching an automobile convertible top being automatically deployed from its stored position to its unfolded position.