GEOS
3.4.2
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00001 /********************************************************************** 00002 * 00003 * GEOS - Geometry Engine Open Source 00004 * http://geos.osgeo.org 00005 * 00006 * Copyright (C) 2005-2006 Refractions Research Inc. 00007 * Copyright (C) 2001-2002 Vivid Solutions Inc. 00008 * 00009 * This is free software; you can redistribute and/or modify it under 00010 * the terms of the GNU Lesser General Public Licence as published 00011 * by the Free Software Foundation. 00012 * See the COPYING file for more information. 00013 * 00014 **********************************************************************/ 00015 00016 #ifndef GEOS_ALGORITHM_CENTROIDLINE_H 00017 #define GEOS_ALGORITHM_CENTROIDLINE_H 00018 00019 00020 #include <geos/export.h> 00021 #include <geos/geom/Coordinate.h> 00022 00023 // Forward declarations 00024 namespace geos { 00025 namespace geom { 00026 class Geometry; 00027 class CoordinateSequence; 00028 } 00029 } 00030 00031 namespace geos { 00032 namespace algorithm { // geos::algorithm 00033 00035 class GEOS_DLL CentroidLine { 00036 private: 00037 00038 geom::Coordinate centSum; 00039 00040 double totalLength; 00041 00042 public: 00043 00044 CentroidLine() 00045 : 00046 centSum(0.0, 0.0), 00047 totalLength(0.0) 00048 {} 00049 00050 ~CentroidLine() {} 00051 00058 void add(const geom::Geometry *geom); 00059 00065 void add(const geom::CoordinateSequence *pts); 00066 00067 geom::Coordinate* getCentroid() const; 00068 00070 bool getCentroid(geom::Coordinate& ret) const; 00071 }; 00072 00073 } // namespace geos::algorithm 00074 } // namespace geos 00075 00076 00077 #endif // GEOS_ALGORITHM_CENTROIDLINE_H