GEOS: SimplePointInAreaLocator.h Source File

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SimplePointInAreaLocator.h
1 /**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2005-2006 Refractions Research Inc.
7 * Copyright (C) 2001-2002 Vivid Solutions Inc.
8 *
9 * This is free software; you can redistribute and/or modify it under
10 * the terms of the GNU Lesser General Public Licence as published
11 * by the Free Software Foundation.
12 * See the COPYING file for more information.
13 *
14 **********************************************************************/
15
16 #ifndef GEOS_ALGORITHM_LOCATE_SIMPLEPOINTINAREALOCATOR_H
17 #define GEOS_ALGORITHM_LOCATE_SIMPLEPOINTINAREALOCATOR_H
18
19 #include <geos/algorithm/locate/PointOnGeometryLocator.h> // inherited
20
21 // Forward declarations
22 namespace geos {
23 namespace geom {
24 class Geometry;
25 class Coordinate;
26 class Polygon;
27 }
28 }
29
30 namespace geos {
31 namespace algorithm { // geos::algorithm
32 namespace locate { // geos::algorithm::locate
33
47 class SimplePointInAreaLocator : public PointOnGeometryLocator
48 {
49
50 public:
51
52 static int locate(const geom::Coordinate& p,
53 const geom::Geometry *geom);
54
55 static bool containsPointInPolygon(const geom::Coordinate& p,
56 const geom::Polygon *poly);
57
58 SimplePointInAreaLocator( const geom::Geometry * g)
59 : g( g)
60 { }
61
62 int locate( const geom::Coordinate * p)
63 {
64 return locate( *p, g);
65 }
66
67 private:
68
69 static bool containsPoint(const geom::Coordinate& p,
70 const geom::Geometry *geom);
71
72 const geom::Geometry * g;
73
74 };
75
76 } // geos::algorithm::locate
77 } // geos::algorithm
78 } // geos
79
80
81 #endif // GEOS_ALGORITHM_LOCATE_SIMPLEPOINTINAREALOCATOR_H
geos::geom::Coordinate
Coordinate is the lightweight class used to store coordinates.
Definition: Coordinate.h:60
geos::algorithm::locate::SimplePointInAreaLocator
Computes the location of points relative to an areal Geometry, using a simple O(n) algorithm...
Definition: SimplePointInAreaLocator.h:47
geos::algorithm::locate::PointOnGeometryLocator
An interface for classes which determine the Location of points in Polygon or MultiPolygon geometries...
Definition: PointOnGeometryLocator.h:35
geos::geom::Geometry
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition: Geometry.h:167
geos::geom::Polygon
Represents a linear polygon, which may include holes.
Definition: Polygon.h:66
geos::algorithm::locate::SimplePointInAreaLocator::locate
int locate(const geom::Coordinate *p)
Definition: SimplePointInAreaLocator.h:62
geos
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25