TaggedLinesSimplifier.h

/**********************************************************************
 * $Id: TaggedLinesSimplifier.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/TaggedLinesSimplifier.java rev. 1.4 (JTS-1.7.1)
 *
 **********************************************************************
 *
 * NOTES: changed from JTS design adding a private
 *        TaggedLineStringSimplifier member and making
 *        simplify(collection) method become a templated
 *        function.
 *
 **********************************************************************/

#ifndef _GEOS_SIMPLIFY_TAGGEDLINESSIMPLIFIER_H_
#define _GEOS_SIMPLIFY_TAGGEDLINESSIMPLIFIER_H_ 

#include <geos/export.h>
#include <vector>
#include <memory>
#include <cassert>

#include <geos/simplify/LineSegmentIndex.h> // for templated function body

// Forward declarations
namespace geos {
        namespace simplify {
                //class LineSegmentIndex;
                class TaggedLineString;
                class TaggedLineStringSimplifier;
        }
}

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

class GEOS_DLL TaggedLinesSimplifier {

public:

        TaggedLinesSimplifier();

        void setDistanceTolerance(double tolerance);

        template <class iterator_type>
        void simplify(
                iterator_type begin,
                iterator_type end)
        {
                // add lines to the index
                for (iterator_type it=begin; it != end; ++it) {
                        assert(*it);
                        inputIndex->add(*(*it));
                }

                // Simplify lines
                for (iterator_type it=begin; it != end; ++it) {
                        assert(*it);
                        simplify(*(*it));
                }
        }


private:

        void simplify(TaggedLineString& line);

        std::auto_ptr<LineSegmentIndex> inputIndex;

        std::auto_ptr<LineSegmentIndex> outputIndex;

        std::auto_ptr<TaggedLineStringSimplifier> taggedlineSimplifier;

};


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

#endif // _GEOS_SIMPLIFY_TAGGEDLINESSIMPLIFIER_H_ 

/**********************************************************************
 * $Log$
 * Revision 1.4  2006/05/24 15:32:11  strk
 * * source/headers/geos/simplify/TaggedLinesSimplifier.h: added LineSegmentIndex.h include so that every use of the templated simplify() function get all the required definitions.
 *
 * Revision 1.3  2006/05/24 11:41:23  strk
 *         * source/headers/geos/simplify/TaggedLinesSimplifier.h,
 *         source/simplify/TaggedLinesSimplifier.cpp,
 *         source/simplify/TopologyPreservingSimplifier.cpp:
 *         fixed bug in TopologyPreservingSimplifier failing to
 *         detect intersections, refactored TaggedLinesSimplifier
 *         class to more closely match JTS and use templated
 *         functions.
 *
 * Revision 1.2  2006/04/13 14:25:17  strk
 * TopologyPreservingSimplifier initial port
 *
 * Revision 1.1  2006/04/13 10:39:12  strk
 * Initial implementation of TaggedLinesSimplifier class
 *
 **********************************************************************/

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