Abstract
This paper presents an experiment that demonstrates the feasibility of successfully applying CASL to design 3D geometric modelling software. It presents an abstract specification of a 3D geometric model, its basic constructive primitives together with the definition of the rounding high-level operation. A novel methodology for abstractly specifying geometric operations is also highlighted. It allows one to faithfully specify the requirements of this specific area and reveals new mathematical definitions of geometric operations. The key point is to introduce an inclusion notion between geometric objects, in such a way that the result of an operation is defined as the smallest or largest object satisfying some pertinent criteria. This work has been made easier by using different useful CASL features, like first-order logic, free types or structured specifications. Some assets of this specification are to be abstract, readable by researchers in geometric modelling and to simplify the programming process.
This project is partially supported by a French national project (Plan Pluri Formation 1998-2001) between the universities of Poitiers, Strasbourg and Évry, and by the ESPRIT Working Group 29432 (CoFI WG).
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Ledoux, F., Arnould, A., Le Gall, P., Bertrand, Y. (2002). Geometric Modelling with CASL. In: Cerioli, M., Reggio, G. (eds) Recent Trends in Algebraic Development Techniques. WADT 2001. Lecture Notes in Computer Science, vol 2267. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45645-7_9
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