include/geos/noding/SegmentNode.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 Public Licence as published
  10  * by the Free Software Foundation.
  11  * See the COPYING file for more information.
  12  *
  13  **********************************************************************
  14  *
  15  *  Last port: noding/SegmentNode.java rev. 1.6 (JTS-1.9)
  16  *
  17  **********************************************************************/
  18
  19 #ifndef GEOS_NODING_SEGMENTNODE_H
  20 #define GEOS_NODING_SEGMENTNODE_H
  21
  22 #include <geos/export.h>
  23
  24 #include <vector>
  25 #include <iostream>
  26
  27 #include <geos/inline.h>
  28
  29 #include <geos/geom/Coordinate.h>
  30
  31 // Forward declarations
  32 namespace geos {
  33         namespace noding {
  34                 class NodedSegmentString;
  35         }
  36 }
  37
  38 namespace geos {
  39 namespace noding { // geos.noding
  40
  41 /// Represents an intersection point between two NodedSegmentString.
  42 //
  43 /// Final class.
  44 ///
  45 class GEOS_DLL SegmentNode {
  46 private:
  47         const NodedSegmentString& segString;
  48
  49         int segmentOctant;
  50
  51         bool isInteriorVar;
  52
  53     // Declare type as noncopyable
  54     SegmentNode(const SegmentNode& other);
  55     SegmentNode& operator=(const SegmentNode& rhs);
  56
  57 public:
  58         friend std::ostream& operator<< (std::ostream& os, const SegmentNode& n);
  59
  60         /// the point of intersection (own copy)
  61         geom::Coordinate coord;
  62
  63         /// the index of the containing line segment in the parent edge
  64         unsigned int segmentIndex;
  65
  66         /// Construct a node on the given NodedSegmentString
  67         //
  68         /// @param ss the parent NodedSegmentString
  69         ///
  70         /// @param coord the coordinate of the intersection, will be copied
  71         ///
  72         /// @param nSegmentIndex the index of the segment on parent
  73         ///                      NodedSegmentString
  74         ///        where the Node is located.
  75         ///
  76         /// @param nSegmentOctant
  77         ///
  78         SegmentNode(const NodedSegmentString& ss,
  79                     const geom::Coordinate& nCoord,
  80                         unsigned int nSegmentIndex, int nSegmentOctant);
  81
  82         ~SegmentNode() {}
  83
  84         /// \brief
  85         /// Return true if this Node is *internal* (not on the boundary)
  86         /// of the corresponding segment. Currently only the *first*
  87         /// segment endpoint is checked, actually.
  88         ///
  89         bool isInterior() const { return isInteriorVar; }
  90
  91         bool isEndPoint(unsigned int maxSegmentIndex) const;
  92
  93         /**
  94          * @return -1 this EdgeIntersection is located before
  95          *            the argument location
  96          * @return 0 this EdgeIntersection is at the argument location
  97          * @return 1 this EdgeIntersection is located after the
  98          *           argument location
  99          */
 100         int compareTo(const SegmentNode& other);
 101
 102         //string print() const;
 103 };
 104
 105 std::ostream& operator<< (std::ostream& os, const SegmentNode& n);
 106
 107 struct GEOS_DLL  SegmentNodeLT {
 108         bool operator()(SegmentNode *s1, SegmentNode *s2) const {
 109                 return s1->compareTo(*s2)<0;
 110         }
 111 };
 112
 113
 114 } // namespace geos.noding
 115 } // namespace geos
 116
 117 //#ifdef GEOS_INLINE
 118 //# include "geos/noding/SegmentNode.inl"
 119 //#endif
 120
 121 #endif // GEOS_NODING_SEGMENTNODE_H
 122
 123 /**********************************************************************
 124  * $Log$
 125  * Revision 1.2  2006/03/24 09:52:41  strk
 126  * USE_INLINE => GEOS_INLINE
 127  *
 128  * Revision 1.1  2006/03/09 16:46:49  strk
 129  * geos::geom namespace definition, first pass at headers split
 130  *
 131  **********************************************************************/
 132