TaggedLinesSimplifier.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * 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
#include <geos/simplify/TaggedLineStringSimplifier.h>
 
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
#endif
 
// Forward declarations
namespace geos {
        namespace simplify {
                class TaggedLineString;
        }
}
 
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
 
#ifdef _MSC_VER
#pragma warning(pop)
#endif
 
#endif // GEOS_SIMPLIFY_TAGGEDLINESSIMPLIFIER_H