shortcircuitedgeometryvisitor.cpp

在Linux下做的QuadTree的程序

/**********************************************************************
 * $Id: ShortCircuitedGeometryVisitor.cpp 1820 2006-09-06 16:54:23Z mloskot $
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.refractions.net
 *
 * Copyright (C) 2006 Refractions Research 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.
 *
 **********************************************************************
 *
 * Last port: geom/util/ShortCircuitedGeometryVisitor.java rev. 1.1 (JTS-1.7)
 *
 **********************************************************************/


#include <geos/geom/util/ShortCircuitedGeometryVisitor.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/GeometryCollection.h>

using namespace geos::geom;

namespace geos {
namespace geom { // geos.geom
namespace util { // geos.geom.util

void
ShortCircuitedGeometryVisitor::applyTo(const Geometry &geom)
{
	for (unsigned int i=0, n=geom.getNumGeometries(); i<n; ++i)
	{
		const Geometry *element = geom.getGeometryN(i);
		if (dynamic_cast<const GeometryCollection*>(element))
		{
			applyTo(*element);
		}
		else
		{
			// calls the abstract virtual
			visit(*element);
			if (isDone()) done = true;
		}

		if ( done ) return;
	}
}


} // namespace geos.geom.util
} // namespace geos.geom
} // namespace geos