CentroidPoint.h

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_CENTROIDPOINT_H
00017 #define GEOS_ALGORITHM_CENTROIDPOINT_H
00018 
00019 #include <geos/export.h>
00020 #include <geos/geom/Coordinate.h>
00021 
00022 // Forward declarations
00023 namespace geos {
00024         namespace geom {
00025                 class Geometry;
00026         }
00027 }
00028 
00029 
00030 namespace geos {
00031 namespace algorithm { // geos::algorithm
00032 
00034 class GEOS_DLL CentroidPoint {
00035 
00036 private:
00037 
00038         int ptCount;
00039 
00040         geom::Coordinate centSum;
00041 
00042 public:
00043 
00044         CentroidPoint()
00045                 :
00046                 ptCount(0),
00047                 centSum(0.0, 0.0)
00048         {}
00049 
00050         ~CentroidPoint()
00051         {}
00052 
00059         void add(const geom::Geometry *geom);
00060 
00061         void add(const geom::Coordinate *pt);
00062 
00063         geom::Coordinate* getCentroid() const;
00064 
00066         bool getCentroid(geom::Coordinate& ret) const;
00067 };
00068 
00069 } // namespace geos::algorithm
00070 } // namespace geos
00071 
00072 #endif // GEOS_ALGORITHM_CENTROIDPOINT_H

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