GEOS: InteriorPointArea.h Source File

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InteriorPointArea.h
1 /**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2013 Sandro Santilli <strk@keybit.net>
7 * Copyright (C) 2005-2006 Refractions Research Inc.
8 * Copyright (C) 2001-2002 Vivid Solutions Inc.
9 *
10 * This is free software; you can redistribute and/or modify it under
11 * the terms of the GNU Lesser General Public Licence as published
12 * by the Free Software Foundation.
13 * See the COPYING file for more information.
14 *
15 **********************************************************************
16 *
17 * Last port: algorithm/InteriorPointArea.java r728 (JTS-1.13+)
18 *
19 **********************************************************************/
20
21 #ifndef GEOS_ALGORITHM_INTERIORPOINTAREA_H
22 #define GEOS_ALGORITHM_INTERIORPOINTAREA_H
23
24 #include <geos/export.h>
25 #include <geos/geom/Coordinate.h>
26
27 // Forward declarations
28 namespace geos {
29 namespace geom {
30 class Geometry;
31 class LineString;
32 class GeometryFactory;
33 class GeometryCollection;
34 }
35 }
36
37
38 namespace geos {
39 namespace algorithm { // geos::algorithm
40
63 class GEOS_DLL InteriorPointArea {
64
65 private:
66
67 bool foundInterior;
68
69 const geom::GeometryFactory *factory;
70
71 geom::Coordinate interiorPoint;
72
73 double maxWidth;
74
75 void add(const geom::Geometry *geom);
76
77 const geom::Geometry *widestGeometry(const geom::Geometry *geometry);
78
79 const geom::Geometry *widestGeometry(const geom::GeometryCollection *gc);
80
81 geom::LineString *horizontalBisector(const geom::Geometry *geometry);
82
83 public:
84
91 InteriorPointArea(const geom::Geometry *g);
92
93 ~InteriorPointArea();
94
100 bool getInteriorPoint(geom::Coordinate& ret) const;
101
102 private:
103
111 void addPolygon(const geom::Geometry *geometry);
112
113 };
114
115 } // namespace geos::algorithm
116 } // namespace geos
117
118 #endif // GEOS_ALGORITHM_INTERIORPOINTAREA_H
119
geos::geom::Coordinate
Coordinate is the lightweight class used to store coordinates.
Definition: Coordinate.h:60
geos::algorithm::InteriorPointArea
Computes a point in the interior of an areal geometry.
Definition: InteriorPointArea.h:63
geos::geom::Geometry
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition: Geometry.h:167
geos::geom::LineString
Definition: LineString.h:70
geos::geom::GeometryFactory
Supplies a set of utility methods for building Geometry objects from CoordinateSequence or other Geom...
Definition: GeometryFactory.h:67
geos::geom::GeometryCollection
Represents a collection of heterogeneous Geometry objects.
Definition: GeometryCollection.h:56
geos
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25