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/**********************************************************************
* $Id: InteriorPointPoint.cpp 1986 2007-06-08 15:27:42Z mloskot $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2005-2006 Refractions Research Inc.
* 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/InteriorPointPoint.h>
#include <geos/geom/Coordinate.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/GeometryCollection.h>
#include <geos/geom/LineString.h>
#include <geos/geom/Point.h>
#include <geos/geom/CoordinateSequence.h>
#include <typeinfo>
#include <cassert>
using namespace geos::geom;
namespace geos {
namespace algorithm { // geos.algorithm
/*public*/
InteriorPointPoint::InteriorPointPoint(const Geometry *g)
{
minDistance=DoubleInfinity;
if ( ! g->getCentroid(centroid) ) {
hasInterior=false;
} else {
hasInterior=true;
add(g);
}
}
/*private*/
void
InteriorPointPoint::add(const Geometry *geom)
{
const Point *po = dynamic_cast<const Point*>(geom);
if ( po ) {
add(po->getCoordinate());
return;
}
const GeometryCollection *gc = dynamic_cast<const GeometryCollection*>(geom);
if ( gc )
{
for(std::size_t i=0, n=gc->getNumGeometries(); i<n; i++) {
add(gc->getGeometryN(i));
}
}
}
/*private*/
void
InteriorPointPoint::add(const Coordinate *point)
{
assert ( point ); // we wouldn't been called if this was an empty geom
double dist=point->distance(centroid);
if (dist<minDistance) {
interiorPoint=*point;
minDistance=dist;
}
}
/*public*/
bool
InteriorPointPoint::getInteriorPoint(Coordinate& ret) const
{
if ( ! hasInterior ) return false;
ret=interiorPoint;
return true;
}
} // namespace geos.algorithm
} // namespace geos
/**********************************************************************
* $Log$
* Revision 1.14 2006/03/21 11:12:23 strk
* Cleanups: headers inclusion and Log section
*
* Revision 1.13 2006/03/09 16:46:45 strk
* geos::geom namespace definition, first pass at headers split
**********************************************************************/
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