authors 
Franklin, Randolph, Wu, Peter, Y. F. and Samaddar, Sumitro (et al) 
year 
1986 
title 
Prolog and Geometry Projects 
source 
IEEE Computer Graphics and Applications. November, 1986. vol. 6: pp. 4655 : ill. includes bibliography 
summary 
Prolog is a useful tool for geometry and graphics implementations because its primitives, such as unification, match the requirements of many geometric algorithms. During the last two years, programs have been implemented to solve several problems in Prolog, including a subset of the Graphical Kernel System, convexhull calculation, planar graph traversal, recognition of groupings of objects, Boolean combinations of polygons using multiple precision rational numbers, and cartographic map overlay. Certain paradigms or standard forms of geometric programming in Prolog are becoming evident. They include applying a function to every element of a set, executing a procedure so long as a certain geometric pattern exists, and using unification to propagate a transitive function. This article describes the experiences, including paradigms of programming that seem useful, and finally lists those considered as the advantages and disadvantages of Prolog 
keywords 
geometric modeling, computer graphics, PROLOG, programming 
series 
CADline 
references 
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last changed 
2003/06/02 11:58 
