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authors Stouffs, R. and Krishnamurti, R.
year 1996
title On a query language for weighted geometries
source O. Moselhi, C. Bedard and S. Alkass (eds.), Third Canadian Conference on Computing in Civil and Building Engineering, Canadian Society for Civil Engineering, Montreal, pp. 783793
summary Computational design relies on effective models of geometry, for the creation of (geometries of) design artifacts and the querying of the characteristics of these (geometries). In the search for appropriate solid models, there is a consensus - namely, a solid model has to be complete - that is, the corresponding representations are "adequate for answering arbitrary geometric questions algorithmically''. However, this statement becomes more difficult to qualify as users and, in particular, designers pose new questions that go beyond geometry and require other information to be included. Current CAD systems tend to focus on the representation of design artifacts, and on the tools and operations for the creation and manipulation of these representations. Techniques for querying are mostly added as afterthoughts, constrained by the data representation system and methods. Yet, querying a design is as much an intricate aspect of the design process as is the creation or manipulation thereof. In this paper, we explore the foundation of a query language that allows for a rich body of queries, using both geometric and non-geometric data, and incorporating spatial rules as a syntactical expression for pattern matching on geometries.
series other
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