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

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id cf2017_259
authors Yan, Chao; Yuan, Philip F.
year 2017
title Spherical Perspective: Notational Drawing System for non-Euclidean Geometry
source Gülen Çagdas, Mine Özkar, Leman F. Gül and Ethem Gürer (Eds.) Future Trajectories of Computation in Design [17th International Conference, CAAD Futures 2017, Proceedings / ISBN 978-975-561-482-3] Istanbul, Turkey, July 12-14, 2017, pp. 259-275.
summary As a traditional design media, drawing usually has limitations in dealing with non-Euclidean geometrical problem, and therefore is highly challenged by the digital tools in contemporary architecture. This paper offers an explanation of the working mechanism of spherical perspective, an alternative projection instrument, to explore the potential of drawing in digital design scenario. Firstly, the paper reviews how architects notated nonorthogonal geometry by introducing perspective projection into the drawing system of Stereotomy in history. Then based on the conclusion from historical research, the paper develops a design tool, which would be able to translate geometry from orthogonal projection system to spherical one to generate non-Euclidean form. In the end, the paper brings further discussions about the formal and spatial effects brought by this new tool, and its potential and difficulty to be developed into professional design and representation media for architectural practice.
keywords Form Study, Spherical Perspective, Projective Geometry, Non-Euclidean Geometry, Notational Drawing
series CAAD Futures
email yanchao@tongji.edu.cn, philipyuan007@tongji.edu.cn
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