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/**********************************************************************
* $Id: CentroidPoint.cpp 1986 2007-06-08 15:27:42Z mloskot $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2001-2002 Vivid Solutions Inc.
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU Lesser General Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
**********************************************************************/
#include <geos/algorithm/CentroidPoint.h>
#include <geos/geom/Coordinate.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/GeometryCollection.h>
#include <geos/geom/MultiPoint.h>
#include <geos/geom/Point.h>
#include <typeinfo>
using namespace geos::geom;
namespace geos {
namespace algorithm { // geos.algorithm
void
CentroidPoint::add(const Geometry *geom)
{
if (typeid(*geom)==typeid(Point)) {
add(geom->getCoordinate());
} else if ((typeid(*geom)==typeid(GeometryCollection)) ||
(typeid(*geom)==typeid(MultiPoint))) {
GeometryCollection *gc=(GeometryCollection*) geom;
for(std::size_t i=0, n=gc->getNumGeometries(); i<n; ++i)
{
add(gc->getGeometryN(i));
}
}
}
void
CentroidPoint::add(const Coordinate *pt)
{
ptCount+=1;
centSum.x += pt->x;
centSum.y += pt->y;
}
Coordinate*
CentroidPoint::getCentroid() const
{
return new Coordinate(centSum.x/ptCount, centSum.y/ptCount);
}
bool
CentroidPoint::getCentroid(Coordinate& ret) const
{
if ( ptCount == 0.0 ) return false;
ret=Coordinate(centSum.x/ptCount, centSum.y/ptCount);
return true;
}
} // namespace geos.algorithm
} // namespace geos
/**********************************************************************
* $Log$
* Revision 1.12 2006/04/07 09:54:29 strk
* Geometry::getNumGeometries() changed to return 'unsigned int'
* rather then 'int'
*
* Revision 1.11 2006/03/21 11:12:23 strk
* Cleanups: headers inclusion and Log section
*
* Revision 1.10 2006/03/09 16:46:45 strk
* geos::geom namespace definition, first pass at headers split
**********************************************************************/
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