GEOS
3.6.2
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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/ScaledNoder.java rev. 1.3 (JTS-1.7.1) 00016 * 00017 **********************************************************************/ 00018 00019 #ifndef GEOS_NODING_SCALEDNODER_H 00020 #define GEOS_NODING_SCALEDNODER_H 00021 00022 #include <geos/export.h> 00023 00024 #include <cassert> 00025 #include <vector> 00026 00027 #include <geos/inline.h> 00028 #include <geos/noding/Noder.h> // for inheritance 00029 //#include <geos/geom/CoordinateFilter.h> // for inheritance 00030 #include <geos/util.h> 00031 00032 #ifdef _MSC_VER 00033 #pragma warning(push) 00034 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class 00035 #endif 00036 00037 // Forward declarations 00038 namespace geos { 00039 namespace geom { 00040 class Coordinate; 00041 class CoordinateSequence; 00042 } 00043 namespace noding { 00044 class SegmentString; 00045 } 00046 } 00047 00048 namespace geos { 00049 namespace noding { // geos.noding 00050 00061 class GEOS_DLL ScaledNoder : public Noder { // , public geom::CoordinateFilter { // implements Noder 00062 00063 public: 00064 00065 bool isIntegerPrecision() { return (scaleFactor == 1.0); } 00066 00067 ScaledNoder(Noder& n, double nScaleFactor, 00068 double nOffsetX=0.0, double nOffsetY=0.0) 00069 : 00070 noder(n), 00071 scaleFactor(nScaleFactor), 00072 offsetX(nOffsetX), 00073 offsetY(nOffsetY), 00074 isScaled(nScaleFactor!=1.0) 00075 {} 00076 00077 ~ScaledNoder(); 00078 00079 std::vector<SegmentString*>* getNodedSubstrings() const; 00080 00081 void computeNodes(std::vector<SegmentString*>* inputSegStr); 00082 00083 //void filter(Coordinate& c); 00084 00085 void filter_ro(const geom::Coordinate* c) 00086 { 00087 ::geos::ignore_unused_variable_warning(c); 00088 assert(0); 00089 } 00090 00091 void filter_rw(geom::Coordinate* c) const; 00092 00093 private: 00094 00095 Noder& noder; 00096 00097 double scaleFactor; 00098 00099 double offsetX; 00100 00101 double offsetY; 00102 00103 bool isScaled; 00104 00105 void rescale(std::vector<SegmentString*>& segStrings) const; 00106 00107 void scale(std::vector<SegmentString*>& segStrings) const; 00108 00109 class Scaler; 00110 00111 class ReScaler; 00112 00113 friend class ScaledNoder::Scaler; 00114 00115 friend class ScaledNoder::ReScaler; 00116 00117 mutable std::vector<geom::CoordinateSequence*> newCoordSeq; 00118 00119 // Declare type as noncopyable 00120 ScaledNoder(const ScaledNoder& other); 00121 ScaledNoder& operator=(const ScaledNoder& rhs); 00122 }; 00123 00124 } // namespace geos.noding 00125 } // namespace geos 00126 00127 #ifdef _MSC_VER 00128 #pragma warning(pop) 00129 #endif 00130 00131 #endif // GEOS_NODING_SCALEDNODER_H