GEOS 3.12.0
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#pragma once
26
27#include <geos/export.h>
28#include <vector>
29#include <memory>
30
31#ifdef _MSC_VER
32#pragma warning(push)
33#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
34#endif
35
36// Forward declarations
37namespace geos {
38namespace geom {
39class Coordinate;
40class CoordinateSequence;
41class Geometry;
42class LineString;
43class LinearRing;
44}
45namespace simplify {
46class TaggedLineSegment;
47}
48}
49
50namespace geos {
51namespace simplify { // geos::simplify
52
53
57class GEOS_DLL TaggedLineString {
58
59public:
60
61 typedef std::vector<geom::Coordinate> CoordVect;
62
63 typedef std::unique_ptr<CoordVect> CoordVectPtr;
64
66
67 typedef std::unique_ptr<geom::CoordinateSequence> CoordSeqPtr;
68
69 TaggedLineString(const geom::LineString* nParentLine,
70 std::size_t minimumSize,
71 bool preserveEndpoint);
72
74
75 std::size_t getMinimumSize() const;
76
77 bool getPreserveEndpoint() 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 const std::vector<TaggedLineSegment*>& getResultSegments() const;
96
97 void addToResult(std::unique_ptr<TaggedLineSegment> seg);
98
99 void removeRingEndpoint();
100
101 std::unique_ptr<geom::Geometry> asLineString() const;
102
103 std::unique_ptr<geom::Geometry> asLinearRing() const;
104
105private:
106
107 const geom::LineString* parentLine;
108
109 // TaggedLineSegments owned by this object
110 std::vector<TaggedLineSegment*> segs;
111
112 // TaggedLineSegments owned by this object
113 std::vector<TaggedLineSegment*> resultSegs;
114
115 std::size_t minimumSize;
116
117 bool preserveEndpoint;
118
119 void init();
120
121 static std::unique_ptr<geom::CoordinateSequence> extractCoordinates(
122 const std::vector<TaggedLineSegment*>& segs);
123
124 // Copying is turned off
126 TaggedLineString& operator= (const TaggedLineString&);
127
128};
129
130} // namespace geos::simplify
131} // namespace geos
132
133#ifdef _MSC_VER
134#pragma warning(pop)
135#endif
136
The internal representation of a list of coordinates inside a Geometry.
Definition CoordinateSequence.h:56
Definition LineString.h:65
A geom::LineSegment which is tagged with its location in a geom::Geometry.
Definition TaggedLineSegment.h:53
Contains and owns a list of TaggedLineSegments.
Definition TaggedLineString.h:57
Basic namespace for all GEOS functionalities.
Definition geos.h:39