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# SimpleSnapRounder.h

    00001 /**********************************************************************
    00002  * $Id: SimpleSnapRounder.h 3239 2011-02-23 14:37:29Z 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/SimpleSnapRounder.java r320 (JTS-1.12)
    00017  *
    00018  **********************************************************************/
    00019
    00020 #ifndef GEOS_NODING_SNAPROUND_SIMPLESNAPROUNDER_H
    00021 #define GEOS_NODING_SNAPROUND_SIMPLESNAPROUNDER_H
    00022
    00023 #include <geos/export.h>
    00024
    00025 #include <vector>
    00026
    00027 #include <geos/inline.h>
    00028
    00029 #include <geos/noding/Noder.h> // for inheritance
    00030 #include <geos/algorithm/LineIntersector.h> // for composition
    00031 #include <geos/geom/Coordinate.h> // for use in vector
    00032 #include <geos/geom/PrecisionModel.h> // for inlines (should drop)
    00033
    00034 // Forward declarations
    00035 namespace geos {
    00036         namespace geom {
    00037                 //class PrecisionModel;
    00038         }
    00039         namespace algorithm {
    00040                 class LineIntersector;
    00041         }
    00042         namespace noding {
    00043                 class SegmentString;
    00044                 class NodedSegmentString;
    00045                 namespace snapround {
    00046                         class HotPixel;
    00047                 }
    00048         }
    00049 }
    00050
    00051 namespace geos {
    00052 namespace noding { // geos::noding
    00053 namespace snapround { // geos::noding::snapround
    00054
    00074 class GEOS_DLL SimpleSnapRounder: public Noder { // implements NoderIface
    00075
    00076 public:
    00077
    00078         SimpleSnapRounder(const geom::PrecisionModel& newPm);
    00079
    00080         std::vector<SegmentString*>* getNodedSubstrings() const;
    00081
    00082         void computeNodes(std::vector<SegmentString*>* inputSegmentStrings);
    00083
    00084         void add(const SegmentString* segStr);
    00085
    00093         void computeVertexSnaps(const std::vector<SegmentString*>& edges);
    00094
    00095 private:
    00096
    00097         const geom::PrecisionModel& pm;
    00098         algorithm::LineIntersector li;
    00099         double scaleFactor;
    00100         std::vector<SegmentString*>* nodedSegStrings;
    00101
    00102         void checkCorrectness(std::vector<SegmentString*>& inputSegmentStrings);
    00103
    00104         void snapRound(std::vector<SegmentString*>* segStrings,
    00105                         algorithm::LineIntersector& li);
    00106
    00118         void findInteriorIntersections(std::vector<SegmentString*>& segStrings,
    00119                         algorithm::LineIntersector& li, std::vector<geom::Coordinate>& ret);
    00120
    00126         void computeSnaps(const std::vector<SegmentString*>& segStrings,
    00127                 std::vector<geom::Coordinate>& snapPts);
    00128
    00129         void computeSnaps(NodedSegmentString* ss, std::vector<geom::Coordinate>& snapPts);
    00130
    00136         void computeVertexSnaps(NodedSegmentString* e0, NodedSegmentString* e1);
    00137
    00138     // Declare type as noncopyable
    00139     SimpleSnapRounder(const SimpleSnapRounder& other);
    00140     SimpleSnapRounder& operator=(const SimpleSnapRounder& rhs);
    00141 };
    00142
    00143 } // namespace geos::noding::snapround
    00144 } // namespace geos::noding
    00145 } // namespace geos
    00146
    00147 //#ifdef GEOS_INLINE
    00148 //# include "geos/noding/snapround/SimpleSnapRounder.inl"
    00149 //#endif
    00150
    00151 #endif // GEOS_NODING_SNAPROUND_SIMPLESNAPROUNDER_H
    00152
    00153 /**********************************************************************
    00154  * $Log$
    00155  * Revision 1.3  2006/05/03 15:02:49  strk
    00156  * moved some implementations from header to .cpp file (taken out of inline)
    00157  *
    00158  * Revision 1.2  2006/03/24 09:52:41  strk
    00159  * USE_INLINE => GEOS_INLINE
    00160  *
    00161  * Revision 1.1  2006/03/14 12:55:56  strk
    00162  * Headers split: geomgraphindex.h, nodingSnapround.h
    00163  *
    00164  **********************************************************************/
    00165