GEOS: OrientedCoordinateArray.h Source File

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OrientedCoordinateArray.h
1 /**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2009 Sandro Santilli <strk@keybit.net>
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 #ifndef GEOS_NODING_ORIENTEDCOORDINATEARRAY_H
20 #define GEOS_NODING_ORIENTEDCOORDINATEARRAY_H
21
22 #include <geos/export.h>
23
24 //#include <vector>
25 //#include <iostream>
26
27 //#include <geos/inline.h>
28
29 // Forward declarations
30 namespace geos {
31 namespace geom {
32 class CoordinateSequence;
33 }
34 namespace noding {
35 //class SegmentString;
36 }
37 }
38
39 namespace geos {
40 namespace noding { // geos.noding
41
46 class GEOS_DLL OrientedCoordinateArray
47 {
48 public:
49
56 OrientedCoordinateArray(const geom::CoordinateSequence& pts)
57 :
58 pts(&pts),
59 orientationVar(orientation(pts))
60 {
61 }
62
74 int compareTo(const OrientedCoordinateArray& o1) 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
102 //
104 inline bool operator< ( const OrientedCoordinateArray& oca1,
105 const OrientedCoordinateArray& oca2 )
106 {
107 return oca1.compareTo(oca2)<0;
108 }
109
110 } // namespace geos.noding
111 } // namespace geos
112
113
114 #endif // GEOS_NODING_ORIENTEDCOORDINATEARRAY_H
115
geos::noding::OrientedCoordinateArray::OrientedCoordinateArray
OrientedCoordinateArray(const geom::CoordinateSequence &pts)
Definition: OrientedCoordinateArray.h:56
geos::geom::operator<
bool operator<(const Coordinate &a, const Coordinate &b)
Strict weak ordering operator for Coordinate.
Definition: Coordinate.h:135
geos::noding::OrientedCoordinateArray
Allows comparing geom::CoordinateSequences in an orientation-independent way.
Definition: OrientedCoordinateArray.h:46
geos
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25
geos::geom::CoordinateSequence
The internal representation of a list of coordinates inside a Geometry.
Definition: CoordinateSequence.h:59
geos::noding::OrientedCoordinateArray::compareTo
int compareTo(const OrientedCoordinateArray &o1) const
Compares two OrientedCoordinateArrays for their relative order.