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CentroidLine.h

00001 /**********************************************************************
00002  * $Id: CentroidLine.h 2556 2009-06-06 22:22:28Z strk $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
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 #ifndef GEOS_ALGORITHM_CENTROIDLINE_H
00018 #define GEOS_ALGORITHM_CENTROIDLINE_H
00019 
00020 
00021 #include <geos/export.h>
00022 #include <geos/geom/Coordinate.h>
00023 
00024 // Forward declarations
00025 namespace geos {
00026         namespace geom {
00027                 class Geometry;
00028                 class CoordinateSequence;
00029         }
00030 }
00031 
00032 namespace geos {
00033 namespace algorithm { // geos::algorithm
00034 
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
00078 
00079 /**********************************************************************
00080  * $Log$
00081  * Revision 1.1  2006/03/09 16:46:48  strk
00082  * geos::geom namespace definition, first pass at headers split
00083  *
00084  **********************************************************************/
00085 

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