DouglasPeuckerLineSimplifier.h

/**********************************************************************
 * $Id: DouglasPeuckerLineSimplifier.h 2556 2009-06-06 22:22:28Z strk $
 *
 * 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 Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: simplify/DouglasPeuckerLineSimplifier.java rev. 1.4
 *
 **********************************************************************/

#ifndef _GEOS_SIMPLIFY_DOUBGLASPEUCKERLINESIMPLIFIER_H_
#define _GEOS_SIMPLIFY_DOUBGLASPEUCKERLINESIMPLIFIER_H_ 

#include <geos/export.h>
#include <vector>
#include <memory> // for auto_ptr

// Forward declarations
namespace geos {
        namespace geom {
                class Coordinate;
        }
}

namespace geos {
namespace simplify { // geos::simplify

class GEOS_DLL DouglasPeuckerLineSimplifier {

public:

        typedef std::vector<short int> BoolVect;
        typedef std::auto_ptr<BoolVect> BoolVectAutoPtr;

        typedef std::vector<geom::Coordinate> CoordsVect;
        typedef std::auto_ptr<CoordsVect> CoordsVectAutoPtr;


        static CoordsVectAutoPtr simplify(
                        const CoordsVect& nPts,
                        double distanceTolerance);

        DouglasPeuckerLineSimplifier(const CoordsVect& nPts);

        void setDistanceTolerance(double nDistanceTolerance);

        CoordsVectAutoPtr simplify();

private:

        const CoordsVect& pts;
        BoolVectAutoPtr usePt;
        double distanceTolerance;

        void simplifySection(size_t i, size_t j);
};

} // namespace geos::simplify
} // namespace geos

#endif // _GEOS_SIMPLIFY_DOUBGLASPEUCKERLINESIMPLIFIER_H_ 

/**********************************************************************
 * $Log$
 * Revision 1.4  2006/07/10 10:16:06  strk
 * changed vector<bool> to vector<short int> (see bug#101)
 *
 * Revision 1.3  2006/06/12 11:29:23  strk
 * unsigned int => size_t
 *
 * Revision 1.2  2006/04/13 10:39:12  strk
 * Initial implementation of TaggedLinesSimplifier class
 *
 * Revision 1.1  2006/04/03 10:16:11  strk
 * DouglasPeuckerLineSimplifier class port
 *
 **********************************************************************/

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