GEOS
3.4.2
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00001 /********************************************************************** 00002 * 00003 * GEOS - Geometry Engine Open Source 00004 * http://geos.osgeo.org 00005 * 00006 * Copyright (C) 2006 Refractions Research Inc. 00007 * 00008 * This is free software; you can redistribute and/or modify it under 00009 * the terms of the GNU Lesser General Public Licence as published 00010 * by the Free Software Foundation. 00011 * See the COPYING file for more information. 00012 * 00013 ********************************************************************** 00014 * 00015 * Last port: noding/snapround/MCIndexSnapRounder.java r486 (JTS-1.12+) 00016 * 00017 **********************************************************************/ 00018 00019 #ifndef GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H 00020 #define GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H 00021 00022 #include <geos/export.h> 00023 00024 #include <geos/noding/Noder.h> // for inheritance 00025 #include <geos/noding/NodedSegmentString.h> // for inlines 00026 #include <geos/noding/snapround/MCIndexPointSnapper.h> // for inines 00027 #include <geos/algorithm/LineIntersector.h> // for composition 00028 #include <geos/geom/Coordinate.h> // for use in vector 00029 #include <geos/geom/PrecisionModel.h> // for inlines 00030 00031 #include <vector> 00032 00033 #ifdef _MSC_VER 00034 #pragma warning(push) 00035 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class 00036 #endif 00037 00038 // Forward declarations 00039 namespace geos { 00040 namespace algorithm { 00041 class LineIntersector; 00042 } 00043 namespace noding { 00044 class SegmentString; 00045 class MCIndexNoder; 00046 } 00047 } 00048 00049 namespace geos { 00050 namespace noding { // geos::noding 00051 namespace snapround { // geos::noding::snapround 00052 00053 00074 class GEOS_DLL MCIndexSnapRounder: public Noder { // implments Noder 00075 00076 public: 00077 00078 MCIndexSnapRounder(const geom::PrecisionModel& nPm) 00079 : 00080 pm(nPm), 00081 scaleFactor(nPm.getScale()), 00082 pointSnapper(0) 00083 { 00084 li.setPrecisionModel(&pm); 00085 } 00086 00087 std::vector<SegmentString*>* getNodedSubstrings() const { 00088 return NodedSegmentString::getNodedSubstrings(*nodedSegStrings); 00089 } 00090 00091 void computeNodes(std::vector<SegmentString*>* segStrings); 00092 00101 void computeVertexSnaps(std::vector<SegmentString*>& edges); 00102 00103 private: 00104 00106 const geom::PrecisionModel& pm; 00107 00108 algorithm::LineIntersector li; 00109 00110 double scaleFactor; 00111 00112 std::vector<SegmentString*>* nodedSegStrings; 00113 00114 std::auto_ptr<MCIndexPointSnapper> pointSnapper; 00115 00116 void snapRound(MCIndexNoder& noder, std::vector<SegmentString*>* segStrings); 00117 00118 00126 void findInteriorIntersections(MCIndexNoder& noder, 00127 std::vector<SegmentString*>* segStrings, 00128 std::vector<geom::Coordinate>& intersections); 00129 00134 void computeIntersectionSnaps(std::vector<geom::Coordinate>& snapPts); 00135 00140 void computeVertexSnaps(NodedSegmentString* e); 00141 00142 void checkCorrectness(std::vector<SegmentString*>& inputSegmentStrings); 00143 00144 // Declare type as noncopyable 00145 MCIndexSnapRounder(const MCIndexSnapRounder& other); 00146 MCIndexSnapRounder& operator=(const MCIndexSnapRounder& rhs); 00147 }; 00148 00149 } // namespace geos::noding::snapround 00150 } // namespace geos::noding 00151 } // namespace geos 00152 00153 #ifdef _MSC_VER 00154 #pragma warning(pop) 00155 #endif 00156 00157 #endif // GEOS_NODING_SNAPROUND_MCINDEXSNAPROUNDER_H