GEOS
3.4.2
|
00001 /********************************************************************** 00002 * 00003 * GEOS - Geometry Engine Open Source 00004 * http://geos.osgeo.org 00005 * 00006 * Copyright (C) 2013 Sandro Santilli <strk@keybit.net> 00007 * Copyright (C) 2005-2006 Refractions Research Inc. 00008 * Copyright (C) 2001-2002 Vivid Solutions Inc. 00009 * 00010 * This is free software; you can redistribute and/or modify it under 00011 * the terms of the GNU Lesser General Public Licence as published 00012 * by the Free Software Foundation. 00013 * See the COPYING file for more information. 00014 * 00015 ********************************************************************** 00016 * 00017 * Last port: algorithm/InteriorPointArea.java r728 (JTS-1.13+) 00018 * 00019 **********************************************************************/ 00020 00021 #ifndef GEOS_ALGORITHM_INTERIORPOINTAREA_H 00022 #define GEOS_ALGORITHM_INTERIORPOINTAREA_H 00023 00024 #include <geos/export.h> 00025 #include <geos/geom/Coordinate.h> 00026 00027 // Forward declarations 00028 namespace geos { 00029 namespace geom { 00030 class Geometry; 00031 class LineString; 00032 class GeometryFactory; 00033 class GeometryCollection; 00034 } 00035 } 00036 00037 00038 namespace geos { 00039 namespace algorithm { // geos::algorithm 00040 00063 class GEOS_DLL InteriorPointArea { 00064 00065 private: 00066 00067 bool foundInterior; 00068 00069 const geom::GeometryFactory *factory; 00070 00071 geom::Coordinate interiorPoint; 00072 00073 double maxWidth; 00074 00075 void add(const geom::Geometry *geom); 00076 00077 const geom::Geometry *widestGeometry(const geom::Geometry *geometry); 00078 00079 const geom::Geometry *widestGeometry(const geom::GeometryCollection *gc); 00080 00081 geom::LineString *horizontalBisector(const geom::Geometry *geometry); 00082 00083 public: 00084 00091 InteriorPointArea(const geom::Geometry *g); 00092 00093 ~InteriorPointArea(); 00094 00100 bool getInteriorPoint(geom::Coordinate& ret) const; 00101 00102 private: 00103 00111 void addPolygon(const geom::Geometry *geometry); 00112 00113 }; 00114 00115 } // namespace geos::algorithm 00116 } // namespace geos 00117 00118 #endif // GEOS_ALGORITHM_INTERIORPOINTAREA_H 00119