MCIndexSnapRounder.h

00001 /**********************************************************************
00002  * $Id: MCIndexSnapRounder.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_SNAPROUND_MCINDEXSNAPROUNDER_H
00017 #define GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H
00018 
00019 #include <vector>
00020 
00021 #include <geos/inline.h>
00022 
00023 #include <geos/noding/Noder.h> // for inheritance
00024 #include <geos/algorithm/LineIntersector.h> // for composition
00025 #include <geos/geom/Coordinate.h> // for use in vector
00026 
00027 // Forward declarations
00028 namespace geos {
00029         namespace geom {
00030                 class PrecisionModel;
00031         }
00032         namespace algorithm {
00033                 class LineIntersector;
00034         }
00035         namespace noding {
00036                 class SegmentString;
00037                 class MCIndexNoder;
00038                 namespace snapround {
00039                         //class HotPixel;
00040                         class MCIndexPointSnapper;
00041                 }
00042         }
00043 }
00044 
00045 namespace geos {
00046 namespace noding { // geos::noding
00047 namespace snapround { // geos::noding::snapround
00048 
00049 
00073 class MCIndexSnapRounder: public Noder { // implments Noder
00074 
00075 private:
00076 
00078         geom::PrecisionModel& pm;
00079 
00080         algorithm::LineIntersector li;
00081 
00082         double scaleFactor;
00083 
00084         std::vector<SegmentString*>* nodedSegStrings;
00085 
00086         std::auto_ptr<MCIndexPointSnapper> pointSnapper;
00087 
00088         void snapRound(MCIndexNoder& noder, std::vector<SegmentString*>* segStrings);
00089 
00090         
00098         void findInteriorIntersections(MCIndexNoder& noder,
00099                         std::vector<SegmentString*>* segStrings,
00100                         std::vector<geom::Coordinate>& intersections);
00101 
00106         void computeIntersectionSnaps(std::vector<geom::Coordinate>& snapPts);
00107 
00112         void computeEdgeVertexSnaps(SegmentString* e);
00113         
00114         void checkCorrectness(std::vector<SegmentString*>& inputSegmentStrings);
00115 
00116 public:
00117 
00118         MCIndexSnapRounder(geom::PrecisionModel& nPm);
00119 
00120         std::vector<SegmentString*>* getNodedSubstrings() const;
00121 
00122         void computeNodes(std::vector<SegmentString*>* segStrings);
00123  
00130         void computeVertexSnaps(std::vector<SegmentString*>& edges);
00131 
00132 };
00133 
00134 
00135 } // namespace geos::noding::snapround
00136 } // namespace geos::noding
00137 } // namespace geos
00138 
00139 #ifdef GEOS_INLINE
00140 # include <geos/noding/snapround/MCIndexSnapRounder.inl>
00141 #endif
00142 
00143 #endif // GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H
00144 
00145 /**********************************************************************
00146  * $Log$
00147  * Revision 1.2  2006/03/24 09:52:41  strk
00148  * USE_INLINE => GEOS_INLINE
00149  *
00150  * Revision 1.1  2006/03/14 12:55:56  strk
00151  * Headers split: geomgraphindex.h, nodingSnapround.h
00152  *
00153  **********************************************************************/
00154 

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