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articleNo Access
ORIENTATION AND POINT INCLUSION TESTS FOR SIMPLE POLYGONS
- WEISHI LI,
- SHUHONG XU,
- ENG TEO ONG, and
- GANG ZHAO
International Journal of Computational Engineering Science01 Sep 2004
Preview Abstract
This paper presents two robust algorithms for calculating the orientation and inclusion of simple polygons, respectively. By finding a maximum vertex of a simple polygon, a very fast convex vertex searching method is proposed and the orientation of the polygon can be uniquely determined. To decide the relationship between a point and a simple polygon, the concept of visible edge is put forward and an efficient visible edge searching algorithm is presented.

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