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authors Baer, A., Eastman, C.M. and Henrion, M.
year 1979
title Geometric Modeling : a Survey
source business Press. September, 1979. vol. 11: pp. 253-271 : ill. includes bibliography
summary Computer programs are being developed to aid the design of physical systems ranging from individual mechanical parts to entire buildings or ships. These efforts highlight the importance of computer models of three dimensional objects. Issues and alternatives in geometric modeling are discussed and illustrated with comparisons of 11 existing modelling systems, in particular coherently-structured models of polyhedral solids where the faces may be either planar or curved. Four categories of representation are distinguished: data representations that store full, explicit shape information; definition languages with which the user can enter description of shapes into the system, and which can constitute procedural representations; special subsets of the information produced by application programs; and conceptual models that define the logical structure of the dada representation and/or definition language
keywords solid modeling, B-rep, CSG, languages, CAD, programming, data structures, boolean operations, polyhedra
series CADline
references Content-type: text/plain
last changed 2003/05/17 08:15
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