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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
37 class SegmentStringUtil
38 {
39 public:
51 static void extractSegmentStrings(const geom::Geometry * g,
52 SegmentString::ConstVect& segStr)
53 {
54 geom::LineString::ConstVect lines;
55 geom::util::LinearComponentExtracter::getLines(*g, lines);
56
57 for (std::size_t i=0, n=lines.size(); i<n; i++)
58 {
59 geom::LineString* line = (geom::LineString*)(lines[i]);
60
61 // we take ownership of the coordinates here
62 // TODO: check if this can be optimized by getting
63 // the internal CS.
64 geom::CoordinateSequence* pts = line->getCoordinates();
65
66 segStr.push_back(new NodedSegmentString(pts, g));
67 }
68 }
69
70 };
71
72 } // geos::noding
73 } // geos
74
75 #endif // GEOS_NODING_SEGMENTSTRINGUTIL_H