CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

PDF papers
authors Nagakura, Takehiko
year 1990
title Shape Recognition and Transformation: A Script-Based Approach
source The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures 89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 149-170
summary Design evolves. Architects deploy considerable knowledge to develop their designs from one stage to the next. Drawings play a major role in describing the 11 state" of design at each stage; however, they do not explicitly reveal the knowledge used to achieve the design, for the knowledge is concealed in the "process" between these stages rather than in the drawings themselves. This process involves parametric and schematic transformations as well as perception of unanticipated possibilities emerging from the drawings in progress. To make an impact on design, CAD must address these issues of design knowledge, but so far its focus has been instead on drawings as relatively static collections of graphic primitives. This paper introduces the concepts of shapes and shape transformation as fundamental aspects of design knowledge. It is implemented on a computer program in the form of a prototype shape-scripting language. In summary, this language works as a shell to encode a set of shape categories and their transformations, and it enables progressive shape recognition and shape transformation in line drawings. An appropriate set of these encoded transformations may represent a body of syntactic knowledge about an architectural style. This opens up the exciting possibility of a computational implementation of a shape grammar.
series CAAD Futures
full text file.pdf (462,735 bytes)
references Content-type: text/plain
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100%; open Mitchell, W.J. (19??) Find in CUMINCAD Formal Representations: a Foundation for Computer-aided Design , Environment and Planning B 13:133-162

100%; open Mitchell, W.J. (19??) Find in CUMINCAD Types and Vocabularies, Chapter 6 of The Logic of Architecture , Cambridge, Mass. : MIT Press, in press

100%; open Nagakura, T. (19??) Find in CUMINCAD The Shape-scripting Language , Cambridge, Mass manuscript in preparation

100%; open Stiny, G. and Mitchell, W.J. (19??) Find in CUMINCAD The Palladian Grammar , Environment and Planning B 5:5-18

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