MCIndexNoder.h

/**********************************************************************
 * $Id: MCIndexNoder.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 Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: noding/MCIndexNoder.java rev. 1.6 (JTS-1.9)
 *
 **********************************************************************/

#ifndef GEOS_NODING_MCINDEXNODER_H
#define GEOS_NODING_MCINDEXNODER_H

#include <geos/export.h>

#include <geos/inline.h>

#include <geos/index/chain/MonotoneChainOverlapAction.h> // for inheritance
#include <geos/noding/SinglePassNoder.h> // for inheritance
#include <geos/index/strtree/STRtree.h> // for composition
#include <geos/util.h>

#include <vector>
#include <iostream>

// Forward declarations
namespace geos {
        namespace geom {
                class LineSegment;
        }
        namespace noding {
                class SegmentString;
                class SegmentIntersector;
        }
}

namespace geos {
namespace noding { // geos.noding

class GEOS_DLL MCIndexNoder : public SinglePassNoder {

private:
        std::vector<index::chain::MonotoneChain*> monoChains;
        index::strtree::STRtree index;
        int idCounter;
        std::vector<SegmentString*>* nodedSegStrings;
        // statistics
        int nOverlaps;

        void intersectChains();

        void add(SegmentString* segStr);

public:

        MCIndexNoder(SegmentIntersector *nSegInt=NULL)
                :
                SinglePassNoder(nSegInt),
                idCounter(0),
                nodedSegStrings(NULL),
                nOverlaps(0)
        {}

        ~MCIndexNoder();

        std::vector<index::chain::MonotoneChain*>& getMonotoneChains() { return monoChains; }

        index::SpatialIndex& getIndex();

        std::vector<SegmentString*>* getNodedSubstrings() const;

        void computeNodes(std::vector<SegmentString*>* inputSegmentStrings);

        class SegmentOverlapAction : public index::chain::MonotoneChainOverlapAction {
        private:
                SegmentIntersector& si;
        public:
                SegmentOverlapAction(SegmentIntersector& newSi)
                        :
                        index::chain::MonotoneChainOverlapAction(),
                        si(newSi)
                {}

                void overlap(index::chain::MonotoneChain& mc1, size_t start1,
                             index::chain::MonotoneChain& mc2, size_t start2);

        };
        
};

} // namespace geos.noding
} // namespace geos

#ifdef GEOS_INLINE
# include <geos/noding/MCIndexNoder.inl>
#endif

#endif // GEOS_NODING_MCINDEXNODER_H

/**********************************************************************
 * $Log$
 * Revision 1.4  2006/03/24 09:52:41  strk
 * USE_INLINE => GEOS_INLINE
 *
 * Revision 1.3  2006/03/22 18:12:31  strk
 * indexChain.h header split.
 *
 * Revision 1.2  2006/03/14 12:55:56  strk
 * Headers split: geomgraphindex.h, nodingSnapround.h
 *
 * Revision 1.1  2006/03/09 16:46:49  strk
 * geos::geom namespace definition, first pass at headers split
 *
 **********************************************************************/

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