Abstract
Parametric CAD supports design explorations through generative methods which compose and transform geometric elements. This paper argues that elementary shape computations do not always correspond to valid compositional shape structures. In many design cases generative rules correspond to compositional structures, but for relatively simple shapes and rules it is not always possible to assign a corresponding compositional structure of parts which account for all operations of the computation. This problem is brought into strong relief when design processes generate multiple compositions according to purpose, such as product structure, assembly, manufacture, etc. Is it possible to specify shape computations which generate just these compositions of parts or are there additional emergent shapes and features? In parallel, combining two compositions would require the associated combined computations to yield a valid composition. Simple examples are presented which throw light on the issues in integrating different product descriptions (i.e. compositions) within parametric CAD.
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References
Woodbury, R.: Elements of Parametric Design. Routledge, London (2010)
Aish, R.: From intuition to precision. In: Duarte, J.P., Ducla-Soares, G., Zita, S.A. (eds.) Digital Design: The Quest for New Paradigms, 23rd eCAADe Conference Proceedings, Lisbon, Portugal, pp. 21–24 (2005)
Prats, M., Earl, C.F.: Exploration through drawings in the conceptual stages of product design. In: Gero, J. (ed.) Design Computing and Cognition 2006, pp. 83–102. Springer, Dordrecht (2006)
Prats, M., Lim, S., Jowers, I., Garner, S., Chase, S.: Transforming shape in design: observations from studies of sketching. Des. Stud. 30, 503–520 (2009)
Schön, D.A., Wiggins, G.: Kinds of seeing and their functions in designing. Des. Stud. 13, 135–156 (1992)
Stiny, G.: Shape: Talking about Seeing and Doing. MIT Press, Cambridge (2006)
Stiny, G.: Shape rules: closure, continuity, and emergence. Environ. Plann. B Plann. Des. 21, 49–78 (1994)
Jowers, I., Earl, C.: Structures in shapes: a perspective from rules and embedding. In: Cultural DNA Workshop 2017, KAIST Graduate School of Culture Technology, Republic of Korea (2017)
Lyndon, R.C., Schützenberger, M.P.: The equation aM = bNcP in a free group. Mich. Math. J. 9, 289–298 (1962)
Eastman, C., Teicholz, P., Sacks, R., Liston, K.: BIM Handbook: A Guide to Building Information Modeling for Owners, Managers, Designers, Engineers and Contractors. Wiley, New Jersey (2011)
McKay, A., Stiny, G.N., de Pennington, A.: Principles of the definition of design structures. Int. J. Comput. Integr. Manuf. 29, 1–14 (2016)
Behera, A.K., McKay, A., Chau, H.H., Robinson, M.A.: Embedding multiple design structures into design definitions: a case study of a collision avoidance robot. In: proceedings of International Design Conference, Dubrovnik, Croatia, pp. 119–128 (2016)
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Jowers, I., Earl, C., Stiny, G. (2017). Shape Computations Without Compositions. In: Çağdaş, G., Özkar, M., Gül, L., Gürer, E. (eds) Computer-Aided Architectural Design. Future Trajectories. CAADFutures 2017. Communications in Computer and Information Science, vol 724. Springer, Singapore. https://doi.org/10.1007/978-981-10-5197-5_19
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DOI: https://doi.org/10.1007/978-981-10-5197-5_19
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