MCIndexNoder.h

00001 /**********************************************************************
00002  * $Id: MCIndexNoder.h 1820 2006-09-06 16:54:23Z mloskot $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2006      Refractions Research Inc.
00008  *
00009  * This is free software; you can redistribute and/or modify it under
00010  * the terms of the GNU Lesser General Public Licence as published
00011  * by the Free Software Foundation. 
00012  * See the COPYING file for more information.
00013  *
00014  **********************************************************************/
00015 
00016 #ifndef GEOS_NODING_MCINDEXNODER_H
00017 #define GEOS_NODING_MCINDEXNODER_H
00018 
00019 #include <geos/inline.h>
00020 
00021 #include <geos/index/chain/MonotoneChainOverlapAction.h> // for inheritance
00022 #include <geos/noding/SinglePassNoder.h> // for inheritance
00023 #include <geos/index/strtree/STRtree.h> // for composition
00024 
00025 #include <vector>
00026 #include <iostream>
00027 
00028 // Forward declarations
00029 namespace geos {
00030         namespace geom {
00031                 class LineSegment;
00032         }
00033         namespace noding {
00034                 class SegmentString;
00035                 class SegmentIntersector;
00036         }
00037 }
00038 
00039 namespace geos {
00040 namespace noding { // geos.noding
00041 
00052 class MCIndexNoder : public SinglePassNoder {
00053 
00054 private:
00055         std::vector<index::chain::MonotoneChain*> monoChains;
00056         index::strtree::STRtree index;
00057         int idCounter;
00058         std::vector<SegmentString*>* nodedSegStrings;
00059         // statistics
00060         int nOverlaps;
00061 
00062         void intersectChains();
00063 
00064         void add(SegmentString* segStr);
00065 
00066 public:
00067 
00068         MCIndexNoder(SegmentIntersector *nSegInt=NULL)
00069                 :
00070                 SinglePassNoder(nSegInt),
00071                 idCounter(0),
00072                 nodedSegStrings(NULL),
00073                 nOverlaps(0)
00074         {}
00075 
00076         ~MCIndexNoder();
00077 
00079         std::vector<index::chain::MonotoneChain*>& getMonotoneChains() { return monoChains; }
00080 
00081         index::SpatialIndex& getIndex();
00082 
00083         std::vector<SegmentString*>* getNodedSubstrings() const;
00084 
00085         void computeNodes(std::vector<SegmentString*>* inputSegmentStrings);
00086 
00087         class SegmentOverlapAction : public index::chain::MonotoneChainOverlapAction {
00088         private:
00089                 SegmentIntersector& si;
00090         public:
00091                 SegmentOverlapAction(SegmentIntersector& newSi)
00092                         :
00093                         si(newSi)
00094                 {}
00095 
00096                 void overlap(index::chain::MonotoneChain* mc1, int start1,
00097                                 index::chain::MonotoneChain* mc2, int start2);
00098 
00099                 void overlap(geom::LineSegment* s1, geom::LineSegment* s2) { assert(0); }
00100         };
00101         
00102 };
00103 
00104 } // namespace geos.noding
00105 } // namespace geos
00106 
00107 #ifdef GEOS_INLINE
00108 # include <geos/noding/MCIndexNoder.inl>
00109 #endif
00110 
00111 #endif // GEOS_NODING_MCINDEXNODER_H
00112 
00113 /**********************************************************************
00114  * $Log$
00115  * Revision 1.4  2006/03/24 09:52:41  strk
00116  * USE_INLINE => GEOS_INLINE
00117  *
00118  * Revision 1.3  2006/03/22 18:12:31  strk
00119  * indexChain.h header split.
00120  *
00121  * Revision 1.2  2006/03/14 12:55:56  strk
00122  * Headers split: geomgraphindex.h, nodingSnapround.h
00123  *
00124  * Revision 1.1  2006/03/09 16:46:49  strk
00125  * geos::geom namespace definition, first pass at headers split
00126  *
00127  **********************************************************************/
00128 

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