include/geos/simplify/TaggedLineString.h

   1 /**********************************************************************
   2  *
   3  * GEOS - Geometry Engine Open Source
   4  * http://geos.osgeo.org
   5  *
   6  * Copyright (C) 2006 Refractions Research Inc.
   7  *
   8  * This is free software; you can redistribute and/or modify it under
   9  * the terms of the GNU Lesser General Licence as published
  10  * by the Free Software Foundation.
  11  * See the COPYING file for more information.
  12  *
  13  **********************************************************************
  14  *
  15  * Last port: simplify/TaggedLineString.java rev. 1.2 (JTS-1.7.1)
  16  *
  17  **********************************************************************
  18  *
  19  * NOTES: This class can be optimized to work with vector<Coordinate*>
  20  *        rather then with CoordinateSequence. Also, LineSegment should
  21  *        be replaced with a class not copying Coordinates.
  22  *
  23  **********************************************************************/
  24
  25 #ifndef GEOS_SIMPLIFY_TAGGEDLINESTRING_H
  26 #define GEOS_SIMPLIFY_TAGGEDLINESTRING_H
  27
  28 #include <geos/export.h>
  29 #include <vector>
  30 #include <memory>
  31
  32 #ifdef _MSC_VER
  33 #pragma warning(push)
  34 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
  35 #endif
  36
  37 // Forward declarations
  38 namespace geos {
  39         namespace geom {
  40                 class Coordinate;
  41                 class CoordinateSequence;
  42                 class Geometry;
  43                 class LineString;
  44                 class LinearRing;
  45         }
  46         namespace simplify {
  47                 class TaggedLineSegment;
  48         }
  49 }
  50
  51 namespace geos {
  52 namespace simplify { // geos::simplify
  53
  54
  55 /** \brief
  56  *
  57  * Contains and owns a list of TaggedLineSegments
  58  *
  59  */
  60 class GEOS_DLL TaggedLineString {
  61
  62 public:
  63
  64         typedef std::vector<geom::Coordinate> CoordVect;
  65
  66         typedef std::auto_ptr<CoordVect> CoordVectPtr;
  67
  68         typedef geom::CoordinateSequence CoordSeq;
  69
  70         typedef std::auto_ptr<geom::CoordinateSequence> CoordSeqPtr;
  71
  72         TaggedLineString(const geom::LineString* nParentLine,
  73                         std::size_t minimumSize=2);
  74
  75         ~TaggedLineString();
  76
  77         std::size_t getMinimumSize() const;
  78
  79         const geom::LineString* getParent() const;
  80
  81         const CoordSeq* getParentCoordinates() const;
  82
  83         CoordSeqPtr getResultCoordinates() const;
  84
  85         std::size_t getResultSize() const;
  86
  87         TaggedLineSegment* getSegment(std::size_t i);
  88
  89         const TaggedLineSegment* getSegment(std::size_t i) const;
  90
  91         std::vector<TaggedLineSegment*>& getSegments();
  92
  93         const std::vector<TaggedLineSegment*>& getSegments() const;
  94
  95         void addToResult(std::auto_ptr<TaggedLineSegment> seg);
  96
  97         std::auto_ptr<geom::Geometry> asLineString() const;
  98
  99         std::auto_ptr<geom::Geometry> asLinearRing() const;
 100
 101 private:
 102
 103         const geom::LineString* parentLine;
 104
 105         // TaggedLineSegments owned by this object
 106         std::vector<TaggedLineSegment*> segs;
 107
 108         // TaggedLineSegments owned by this object
 109         std::vector<TaggedLineSegment*> resultSegs;
 110
 111         std::size_t minimumSize;
 112
 113         void init();
 114
 115         static CoordVectPtr extractCoordinates(
 116                         const std::vector<TaggedLineSegment*>& segs);
 117
 118         // Copying is turned off
 119         TaggedLineString(const TaggedLineString&);
 120         TaggedLineString& operator= (const TaggedLineString&);
 121
 122 };
 123
 124 } // namespace geos::simplify
 125 } // namespace geos
 126
 127 #ifdef _MSC_VER
 128 #pragma warning(pop)
 129 #endif
 130
 131 #endif // GEOS_SIMPLIFY_TAGGEDLINESTRING_H
 132
 133 /**********************************************************************
 134  * $Log$
 135  * Revision 1.7  2006/06/12 11:29:23  strk
 136  * unsigned int => size_t
 137  *
 138  * Revision 1.6  2006/04/13 21:52:34  strk
 139  * Many debugging lines and assertions added. Fixed bug in TaggedLineString class.
 140  *
 141  * Revision 1.5  2006/04/13 16:04:10  strk
 142  * Made TopologyPreservingSimplifier implementation successfully build
 143  *
 144  * Revision 1.4  2006/04/13 09:21:45  mloskot
 145  * Removed definition of copy ctor and assignment operator for TaggedLineString class.
 146  * According to following rule: Declaring, but not defining, private copy operations has
 147  * the effect of "turning off" copying for the class.
 148  *
 149  * Revision 1.3  2006/04/12 17:19:57  strk
 150  * Ported TaggedLineStringSimplifier class, made LineSegment class
 151  * polymorphic to fix derivation of TaggedLineSegment
 152  *
 153  * Revision 1.2  2006/04/12 15:20:37  strk
 154  * LineSegmentIndex class
 155  *
 156  * Revision 1.1  2006/04/12 14:22:12  strk
 157  * Initial implementation of TaggedLineSegment and TaggedLineString classes
 158  *
 159  **********************************************************************/