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) 2005-2006 Refractions Research Inc. 00007 * Copyright (C) 2001-2002 Vivid Solutions 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: linearref/LinearIterator.java r463 00017 * 00018 **********************************************************************/ 00019 00020 #ifndef GEOS_LINEARREF_LINEARITERATOR_H 00021 #define GEOS_LINEARREF_LINEARITERATOR_H 00022 00023 #include <string> 00024 00025 #include <geos/geom/Coordinate.h> 00026 #include <geos/geom/Geometry.h> 00027 #include <geos/geom/LineSegment.h> 00028 #include <geos/linearref/LinearLocation.h> 00029 00030 namespace geos { namespace linearref 00031 { 00032 00050 class LinearIterator 00051 { 00052 public: 00058 LinearIterator(const geom::Geometry *linear); 00059 00067 LinearIterator(const geom::Geometry *linear, const LinearLocation& start); 00068 00077 LinearIterator(const geom::Geometry *linear, unsigned int componentIndex, unsigned int vertexIndex); 00078 00083 bool hasNext() const; 00084 00085 00089 void next(); 00090 00097 bool isEndOfLine() const; 00098 00103 unsigned int getComponentIndex() const; 00104 00109 unsigned int getVertexIndex() const; 00110 00115 const geom::LineString* getLine() const; 00116 00122 geom::Coordinate getSegmentStart() const; 00123 00131 geom::Coordinate getSegmentEnd() const; 00132 00133 private: 00134 00135 static unsigned int segmentEndVertexIndex(const LinearLocation& loc); 00136 00137 const geom::LineString *currentLine; 00138 unsigned int vertexIndex; 00139 unsigned int componentIndex; 00140 const geom::Geometry *linear; 00141 const unsigned int numLines; 00142 00149 void loadCurrentLine(); 00150 00151 // Declare type as noncopyable 00152 LinearIterator(const LinearIterator& other); 00153 LinearIterator& operator=(const LinearIterator& rhs); 00154 }; 00155 00156 }} // namespace geos::linearref 00157 00158 #endif // GEOS_LINEARREF_LINEARITERATOR_H