GEOS  3.3.3
LinearIterator.h
1 /**********************************************************************
2  * $Id: LinearIterator.h 3012 2010-06-19 11:14:21Z strk $
3  *
4  * GEOS - Geometry Engine Open Source
5  * http://geos.refractions.net
6  *
7  * Copyright (C) 2005-2006 Refractions Research Inc.
8  * Copyright (C) 2001-2002 Vivid Solutions Inc.
9  *
10  * This is free software; you can redistribute and/or modify it under
11  * the terms of the GNU Lesser General Public Licence as published
12  * by the Free Software Foundation.
13  * See the COPYING file for more information.
14  *
15  **********************************************************************
16  *
17  * Last port: linearref/LinearIterator.java rev. 1.10
18  *
19  **********************************************************************/
20 
21 #ifndef GEOS_LINEARREF_LINEARITERATOR_H
22 #define GEOS_LINEARREF_LINEARITERATOR_H
23 
24 #include <string>
25 
26 #include <geos/geom/Coordinate.h>
27 #include <geos/geom/Geometry.h>
28 #include <geos/geom/LineSegment.h>
29 #include <geos/linearref/LinearLocation.h>
30 
31 namespace geos { namespace linearref
32 {
33 
52 {
53 public:
59  LinearIterator(const geom::Geometry *linear);
60 
68  LinearIterator(const geom::Geometry *linear, const LinearLocation& start);
69 
78  LinearIterator(const geom::Geometry *linear, unsigned int componentIndex, unsigned int vertexIndex);
79 
84  bool hasNext() const;
85 
86 
90  void next();
91 
98  bool isEndOfLine() const;
99 
104  unsigned int getComponentIndex() const;
105 
110  unsigned int getVertexIndex() const;
111 
116  const geom::LineString* getLine() const;
117 
124 
133 
134 private:
135 
136  static unsigned int segmentEndVertexIndex(const LinearLocation& loc);
137 
138  const geom::LineString *currentLine;
139  unsigned int vertexIndex;
140  unsigned int componentIndex;
141  const geom::Geometry *linear;
142  const unsigned int numLines;
143 
148  void loadCurrentLine();
149 
150  // Declare type as noncopyable
151  LinearIterator(const LinearIterator& other);
152  LinearIterator& operator=(const LinearIterator& rhs);
153 };
154 
155 }} // namespace geos::linearref
156 
157 #endif // GEOS_LINEARREF_LINEARITERATOR_H