GEOS  3.13.0dev
OrientedCoordinateArray.h
1 /**********************************************************************
2  *
3  * GEOS - Geometry Engine Open Source
4  * http://geos.osgeo.org
5  *
6  * Copyright (C) 2009 Sandro Santilli <strk@kbt.io>
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/OrientedCoordinateArray.java rev. 1.1 (JTS-1.9)
16  *
17  **********************************************************************/
18 
19 #pragma once
20 
21 #include <geos/export.h>
22 
23 #include <cstddef>
24 
25 // Forward declarations
26 namespace geos {
27 namespace geom {
28 class CoordinateSequence;
29 }
30 namespace noding {
31 //class SegmentString;
32 }
33 }
34 
35 namespace geos {
36 namespace noding { // geos.noding
37 
42 class GEOS_DLL OrientedCoordinateArray {
43 public:
44 
52  :
53  pts(&p_pts),
54  orientationVar(orientation(p_pts))
55  {
56  }
57 
69  int compareTo(const OrientedCoordinateArray& o1) const;
70 
71  bool operator==(const OrientedCoordinateArray& other) const;
72 
73  struct GEOS_DLL HashCode {
74  std::size_t operator()(const OrientedCoordinateArray & oca) const;
75  };
76 
77 private:
78 
79  static int compareOriented(const geom::CoordinateSequence& pts1,
80  bool orientation1,
81  const geom::CoordinateSequence& pts2,
82  bool orientation2);
83 
84 
92  static bool orientation(const geom::CoordinateSequence& pts);
93 
95  const geom::CoordinateSequence* pts;
96 
97  bool orientationVar;
98 
99 };
100 
104 inline bool
106  const OrientedCoordinateArray& oca2)
107 {
108  return oca1.compareTo(oca2) < 0;
109 }
110 
111 } // namespace geos.noding
112 } // namespace geos
113 
The internal representation of a list of coordinates inside a Geometry.
Definition: CoordinateSequence.h:56
Allows comparing geom::CoordinateSequences in an orientation-independent way.
Definition: OrientedCoordinateArray.h:42
int compareTo(const OrientedCoordinateArray &o1) const
Compares two OrientedCoordinateArrays for their relative order.
OrientedCoordinateArray(const geom::CoordinateSequence &p_pts)
Definition: OrientedCoordinateArray.h:51
bool operator<(const OrientedCoordinateArray &oca1, const OrientedCoordinateArray &oca2)
Definition: OrientedCoordinateArray.h:105
Basic namespace for all GEOS functionalities.
Definition: Angle.h:25