GEOS 3.2.1
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00001 /********************************************************************** 00002 * $Id: HotPixel.h 2777 2009-12-03 19:41:15Z 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 * Last port: noding/snapround/HotPixel.java rev. 1.3 (JTS-1.9) 00017 * 00018 **********************************************************************/ 00019 00020 #ifndef GEOS_NODING_SNAPROUND_HOTPIXEL_H 00021 #define GEOS_NODING_SNAPROUND_HOTPIXEL_H 00022 00023 #include <geos/export.h> 00024 00025 #include <geos/inline.h> 00026 00027 #include <geos/geom/Coordinate.h> // for composition 00028 #include <geos/geom/Envelope.h> // for auto_ptr 00029 00030 // Forward declarations 00031 namespace geos { 00032 namespace geom { 00033 class Envelope; 00034 } 00035 namespace algorithm { 00036 class LineIntersector; 00037 } 00038 namespace noding { 00039 class NodedSegmentString; 00040 } 00041 } 00042 00043 namespace geos { 00044 namespace noding { // geos::noding 00045 namespace snapround { // geos::noding::snapround 00046 00058 class GEOS_DLL HotPixel { 00059 00060 private: 00061 00062 algorithm::LineIntersector& li; 00063 00064 geom::Coordinate pt; 00065 const geom::Coordinate& originalPt; 00066 geom::Coordinate ptScaled; 00067 00068 mutable geom::Coordinate p0Scaled; 00069 mutable geom::Coordinate p1Scaled; 00070 00071 double scaleFactor; 00072 00073 double minx; 00074 double maxx; 00075 double miny; 00076 double maxy; 00077 00085 std::vector<geom::Coordinate> corner; 00086 00088 mutable std::auto_ptr<geom::Envelope> safeEnv; 00089 00090 void initCorners(const geom::Coordinate& pt); 00091 00092 double scale(double val) const; 00093 00094 void copyScaled(const geom::Coordinate& p, 00095 geom::Coordinate& pScaled) const; 00096 00118 bool intersectsToleranceSquare(const geom::Coordinate& p0, 00119 const geom::Coordinate& p1) const; 00120 00121 00136 bool intersectsPixelClosure(const geom::Coordinate& p0, 00137 const geom::Coordinate& p1); 00138 00139 // Declare type as noncopyable 00140 HotPixel(const HotPixel& other); 00141 HotPixel& operator=(const HotPixel& rhs); 00142 00143 public: 00144 00145 HotPixel(const geom::Coordinate& pt, 00146 double scaleFact, 00147 algorithm::LineIntersector& li); 00148 00152 const geom::Coordinate& getCoordinate() const { return originalPt; } 00153 00158 const geom::Envelope& getSafeEnvelope() const; 00159 00160 bool intersectsScaled(const geom::Coordinate& p0, 00161 const geom::Coordinate& p1) const; 00162 00163 bool intersects(const geom::Coordinate& p0, 00164 const geom::Coordinate& p1) const; 00165 00174 bool addSnappedNode(NodedSegmentString& segStr, size_t segIndex); 00175 00176 }; 00177 00178 00179 00180 } // namespace geos::noding::snapround 00181 } // namespace geos::noding 00182 } // namespace geos 00183 00184 #ifdef GEOS_INLINE 00185 # include "geos/noding/snapround/HotPixel.inl" 00186 #endif 00187 00188 #endif // GEOS_NODING_SNAPROUND_HOTPIXEL_H 00189 00190 /********************************************************************** 00191 * $Log$ 00192 * Revision 1.3 2006/05/03 17:50:49 strk 00193 * Doxygen comments 00194 * 00195 * Revision 1.2 2006/03/24 09:52:41 strk 00196 * USE_INLINE => GEOS_INLINE 00197 * 00198 * Revision 1.1 2006/03/14 12:55:56 strk 00199 * Headers split: geomgraphindex.h, nodingSnapround.h 00200 * 00201 **********************************************************************/ 00202