GEOS 3.9.1
LinearIterator.h
1/**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2005-2006 Refractions Research Inc.
7 * Copyright (C) 2001-2002 Vivid Solutions Inc.
8 *
9 * This is free software; you can redistribute and/or modify it under
10 * the terms of the GNU Lesser General Public Licence as published
11 * by the Free Software Foundation.
12 * See the COPYING file for more information.
13 *
14 **********************************************************************
15 *
16 * Last port: linearref/LinearIterator.java r463
17 *
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19
20#ifndef GEOS_LINEARREF_LINEARITERATOR_H
21#define GEOS_LINEARREF_LINEARITERATOR_H
22
23#include <string>
24
25#include <geos/geom/Coordinate.h>
26#include <geos/geom/Geometry.h>
27#include <geos/geom/LineSegment.h>
28#include <geos/linearref/LinearLocation.h>
29
30namespace geos {
31namespace linearref {
32
51public:
58
66 LinearIterator(const geom::Geometry* linear, const LinearLocation& start);
67
76 LinearIterator(const geom::Geometry* linear, size_t componentIndex, size_t vertexIndex);
77
82 bool hasNext() const;
83
84
88 void next();
89
96 bool isEndOfLine() const;
97
102 size_t getComponentIndex() const;
103
108 size_t getVertexIndex() const;
109
114 const geom::LineString* getLine() const;
115
122
131
132private:
133
134 static size_t segmentEndVertexIndex(const LinearLocation& loc);
135
136 const geom::LineString* currentLine;
137 size_t vertexIndex;
138 size_t componentIndex;
139 const geom::Geometry* linear;
140 const size_t numLines;
141
148 void loadCurrentLine();
149
150 // Declare type as noncopyable
151 LinearIterator(const LinearIterator& other) = delete;
152 LinearIterator& operator=(const LinearIterator& rhs) = delete;
153};
154
155}
156} // namespace geos::linearref
157
158#endif // GEOS_LINEARREF_LINEARITERATOR_H
Coordinate is the lightweight class used to store coordinates.
Definition: Coordinate.h:60
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition: Geometry.h:188
Definition: LineString.h:68
An iterator over the components and coordinates of a linear geometry (LineString or MultiLineString).
Definition: LinearIterator.h:50
bool hasNext() const
Tests whether there are any vertices left to iterator over.
geom::Coordinate getSegmentEnd() const
Gets the second geom::Coordinate of the current segment. (the coordinate of the next vertex)....
size_t getComponentIndex() const
The component index of the vertex the iterator is currently at.
LinearIterator(const geom::Geometry *linear)
Creates an iterator initialized to the start of a linear Geometry.
geom::Coordinate getSegmentStart() const
Gets the first geom::Coordinate of the current segment. (the coordinate of the current vertex).
LinearIterator(const geom::Geometry *linear, size_t componentIndex, size_t vertexIndex)
Creates an iterator starting at a component and vertex in a linear geom::Geometry.
bool isEndOfLine() const
Checks whether the iterator cursor is pointing to the endpoint of a component geom::LineString.
LinearIterator(const geom::Geometry *linear, const LinearLocation &start)
Creates an iterator starting at a LinearLocation on a linear geom::Geometry.
size_t getVertexIndex() const
The vertex index of the vertex the iterator is currently at.
const geom::LineString * getLine() const
Gets the geom::LineString component the iterator is current at.
void next()
Moves the iterator ahead to the next vertex and (possibly) linear component.
Represents a location along a LineString or MultiLineString.
Definition: LinearLocation.h:44
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:26