GEOS  3.8.0dev
SegmentStringUtil.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 Public Licence as published
10  * by the Free Software Foundation.
11  * See the COPYING file for more information.
12  *
13  *
14  **********************************************************************
15  *
16  * Last port: noding/SegmentStringUtil.java rev. 1.2 (JTS-1.9)
17  *
18  **********************************************************************/
19 
20 #ifndef GEOS_NODING_SEGMENTSTRINGUTIL_H
21 #define GEOS_NODING_SEGMENTSTRINGUTIL_H
22 
23 #include <geos/noding/NodedSegmentString.h>
24 #include <geos/geom/LineString.h>
25 #include <geos/geom/CoordinateSequence.h>
26 #include <geos/geom/util/LinearComponentExtracter.h>
27 
28 namespace geos {
29 namespace noding { // geos::noding
30 
38 public:
50  static void
52  SegmentString::ConstVect& segStr)
53  {
56 
57  for(std::size_t i = 0, n = lines.size(); i < n; i++) {
58  geom::LineString* line = (geom::LineString*)(lines[i]);
59 
60  // we take ownership of the coordinates here
61  // TODO: check if this can be optimized by getting
62  // the internal CS.
63  auto pts = line->getCoordinates();
64 
65  segStr.push_back(new NodedSegmentString(pts.release(), g));
66  }
67  }
68 
69 };
70 
71 } // geos::noding
72 } // geos
73 
74 #endif // GEOS_NODING_SEGMENTSTRINGUTIL_H
std::vector< const LineString * > ConstVect
A vector of const LineString pointers.
Definition: LineString.h:75
Represents a list of contiguous line segments, and supports noding the segments.
Definition: NodedSegmentString.h:57
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition: Geometry.h:188
Definition: LineString.h:68
std::unique_ptr< CoordinateSequence > getCoordinates() const override
Returns this Geometry vertices. Caller takes ownership of the returned object.
static void extractSegmentStrings(const geom::Geometry *g, SegmentString::ConstVect &segStr)
Extracts all linear components from a given Geometry to SegmentStrings.
Definition: SegmentStringUtil.h:51
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25
static void getLines(const Geometry &geom, std::vector< const LineString * > &ret)
Utility methods for processing SegmentStrings.
Definition: SegmentStringUtil.h:37