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# MCIndexSnapRounder.h

    00001 /**********************************************************************
    00002  * $Id: MCIndexSnapRounder.h 3524 2011-11-30 09:49:58Z strk $
    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  * Last port: noding/snapround/MCIndexSnapRounder.java r480 (JTS-1.12)
    00017  *
    00018  **********************************************************************/
    00019
    00020 #ifndef GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H
    00021 #define GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H
    00022
    00023 #include <geos/export.h>
    00024
    00025 #include <geos/noding/Noder.h> // for inheritance
    00026 #include <geos/noding/NodedSegmentString.h> // for inlines
    00027 #include <geos/noding/snapround/MCIndexPointSnapper.h> // for inines
    00028 #include <geos/algorithm/LineIntersector.h> // for composition
    00029 #include <geos/geom/Coordinate.h> // for use in vector
    00030 #include <geos/geom/PrecisionModel.h> // for inlines
    00031
    00032 #include <vector>
    00033
    00034 #ifdef _MSC_VER
    00035 #pragma warning(push)
    00036 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
    00037 #endif
    00038
    00039 // Forward declarations
    00040 namespace geos {
    00041         namespace algorithm {
    00042                 class LineIntersector;
    00043         }
    00044         namespace noding {
    00045                 class SegmentString;
    00046                 class MCIndexNoder;
    00047         }
    00048 }
    00049
    00050 namespace geos {
    00051 namespace noding { // geos::noding
    00052 namespace snapround { // geos::noding::snapround
    00053
    00054
    00075 class GEOS_DLL MCIndexSnapRounder: public Noder { // implments Noder
    00076
    00077 public:
    00078
    00079         MCIndexSnapRounder(geom::PrecisionModel& nPm)
    00080     :
    00081                 pm(nPm),
    00082                 scaleFactor(nPm.getScale()),
    00083                 pointSnapper(0)
    00084   {
    00085     li.setPrecisionModel(&pm);
    00086   }
    00087
    00088         std::vector<SegmentString*>* getNodedSubstrings() const {
    00089           return NodedSegmentString::getNodedSubstrings(*nodedSegStrings);
    00090   }
    00091
    00092         void computeNodes(std::vector<SegmentString*>* segStrings);
    00093
    00102         void computeVertexSnaps(std::vector<SegmentString*>& edges);
    00103
    00104 private:
    00105
    00107         geom::PrecisionModel& pm;
    00108
    00109         algorithm::LineIntersector li;
    00110
    00111         double scaleFactor;
    00112
    00113         std::vector<SegmentString*>* nodedSegStrings;
    00114
    00115         std::auto_ptr<MCIndexPointSnapper> pointSnapper;
    00116
    00117         void snapRound(MCIndexNoder& noder, std::vector<SegmentString*>* segStrings);
    00118
    00119
    00127         void findInteriorIntersections(MCIndexNoder& noder,
    00128                         std::vector<SegmentString*>* segStrings,
    00129                         std::vector<geom::Coordinate>& intersections);
    00130
    00135         void computeIntersectionSnaps(std::vector<geom::Coordinate>& snapPts);
    00136
    00141         void computeVertexSnaps(NodedSegmentString* e);
    00142
    00143         void checkCorrectness(std::vector<SegmentString*>& inputSegmentStrings);
    00144
    00145     // Declare type as noncopyable
    00146     MCIndexSnapRounder(const MCIndexSnapRounder& other);
    00147     MCIndexSnapRounder& operator=(const MCIndexSnapRounder& rhs);
    00148 };
    00149
    00150 } // namespace geos::noding::snapround
    00151 } // namespace geos::noding
    00152 } // namespace geos
    00153
    00154 #ifdef _MSC_VER
    00155 #pragma warning(pop)
    00156 #endif
    00157
    00158 #endif // GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H
    00159
    00160 /**********************************************************************
    00161  * $Log$
    00162  * Revision 1.2  2006/03/24 09:52:41  strk
    00163  * USE_INLINE => GEOS_INLINE
    00164  *
    00165  * Revision 1.1  2006/03/14 12:55:56  strk
    00166  * Headers split: geomgraphindex.h, nodingSnapround.h
    00167  *
    00168  **********************************************************************/
    00169