GEOS 3.4.2

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PointExtracter.h
1 /**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2001-2002 Vivid Solutions Inc.
7 * Copyright (C) 2006 Refractions Research 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 #ifndef GEOS_GEOM_UTIL_POINTEXTRACTER_H
17 #define GEOS_GEOM_UTIL_POINTEXTRACTER_H
18
19 #include <geos/export.h>
20 #include <geos/geom/GeometryFilter.h>
21 #include <geos/geom/Point.h>
22 #include <geos/platform.h>
23 #include <vector>
24
25 namespace geos {
26 namespace geom { // geos.geom
27 namespace util { // geos.geom.util
28
32 class GEOS_DLL PointExtracter: public GeometryFilter {
33
34 public:
41 static void getPoints(const Geometry &geom, Point::ConstVect &ret)
42 {
43 PointExtracter pe(ret);
44 geom.apply_ro(&pe);
45 }
46
51 PointExtracter(Point::ConstVect& newComps)
52 :
53 comps(newComps)
54 {}
55
56 void filter_rw(Geometry *geom)
57 {
58 if ( const Point *p=dynamic_cast<const Point *>(geom) )
59 comps.push_back(p);
60 }
61
62 void filter_ro(const Geometry *geom)
63 {
64 if ( const Point *p=dynamic_cast<const Point *>(geom) )
65 comps.push_back(p);
66 }
67
68 private:
69
70 Point::ConstVect& comps;
71
72 // Declare type as noncopyable
73 PointExtracter(const PointExtracter& other);
74 PointExtracter& operator=(const PointExtracter& rhs);
75 };
76
77 } // namespace geos.geom.util
78 } // namespace geos.geom
79 } // namespace geos
80
81 #endif