Point-in-Polygon (Point-in-Polygon)

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Description

With a given polygon $P$ and an arbitrary point $q$, determine whether point $q$ is enclosed by the edges of the polygon.

Parameters

$n$: number of edges of polygon

Table of Algorithms

Name Year Time Space Approximation Factor Model Reference
Ray casting algorithm Shimrat; M 1962 $O(n)$ $O({1})$ Exact Deterministic Time
Nordbeck and Rystedt (Grid Method) 1967 $O(n)$ $O(n)$ Exact Deterministic Time & Space
Salomon (Swath Method) 1978 $O(n\log n)$ $O(n^{2})$ Exact Deterministic Time & Space
Nordbeck and Rystedt (Sum of area) 1967 $O(n)$ $O({1})$ Exact Deterministic Time
Preparata and Shamos (Wedge) 1985 $O(n)$ $O(n)$ Exact Deterministic Time & Space
Saalfeld (Sign of offset) 1987 $O(n)$ $O({1})$ Exact Deterministic Time
Preparata and Shamos (Intersection sum of angle) 1985 $O(n)$ $O({1})$ Exact Deterministic Time
Nordbeck and Rystedt (Orientation) 1967 $O(n)$ $O({1})$ Exact Deterministic Time

Time Complexity Graph

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