ComponentCoordinateExtracter.h

/**********************************************************************
 * $Id: ComponentCoordinateExtracter.h 2263 2009-01-29 18:56:00Z mloskot $
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.refractions.net
 *
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 * 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.
 *
 **********************************************************************/

#ifndef GEOS_GEOM_UTIL_COMPONENTCOORDINATEEXTRACTER_H
#define GEOS_GEOM_UTIL_COMPONENTCOORDINATEEXTRACTER_H

#include <vector>

#include <geos/geom/GeometryComponentFilter.h>
#include <geos/geom/Geometry.h> // to be removed when we have the .inl
#include <geos/geom/Coordinate.h> // to be removed when we have the .inl
#include <geos/geom/LineString.h> // to be removed when we have the .inl
#include <geos/geom/Point.h> // to be removed when we have the .inl
//#include <geos/platform.h>

namespace geos {
namespace geom { // geos::geom
namespace util { // geos::geom::util

class ComponentCoordinateExtracter : public GeometryComponentFilter 
{
private:

        Coordinate::ConstVect &comps;

public:
        static void getCoordinates(const Geometry &geom, std::vector<const Coordinate*> &ret)
        {
                ComponentCoordinateExtracter cce(ret);
                geom.apply_ro(&cce);
        }

        ComponentCoordinateExtracter( std::vector<const Coordinate*> &newComps)
                :
                comps(newComps)
                {}

        void filter_rw( Geometry * geom)
        {
                if (    geom->getGeometryTypeId() == geos::geom::GEOS_LINEARRING 
                        ||      geom->getGeometryTypeId() == geos::geom::GEOS_LINESTRING
                        ||      geom->getGeometryTypeId() == geos::geom::GEOS_POINT ) 
                        comps.push_back( geom->getCoordinate() );
                //if (  typeid( *geom ) == typeid( LineString )
                //      ||      typeid( *geom ) == typeid( Point ) )
                //if ( const Coordinate *ls=dynamic_cast<const Coordinate *>(geom) )
                //      comps.push_back(ls);
        }

        void filter_ro( const Geometry * geom)
        {
                //if (  typeid( *geom ) == typeid( LineString )
                //      ||      typeid( *geom ) == typeid( Point ) )
                if (    geom->getGeometryTypeId() == geos::geom::GEOS_LINEARRING 
                        ||      geom->getGeometryTypeId() == geos::geom::GEOS_LINESTRING
                        ||      geom->getGeometryTypeId() == geos::geom::GEOS_POINT ) 
                        comps.push_back( geom->getCoordinate() );
                //if ( const Coordinate *ls=dynamic_cast<const Coordinate *>(geom) )
                //      comps.push_back(ls);
        }

};

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

#endif //GEOS_GEOM_UTIL_COMPONENTCOORDINATEEXTRACTER_H

/**********************************************************************
 * $Log$
 *
 **********************************************************************/

---