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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
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