GEOS: PointExtracter.h Source File

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PointExtracter.h
1 /**********************************************************************
2 * $Id: PointExtracter.h 2772 2009-12-03 19:30:54Z mloskot $
3 *
4 * GEOS - Geometry Engine Open Source
5 * http://geos.refractions.net
6 *
7 * Copyright (C) 2001-2002 Vivid Solutions Inc.
8 * Copyright (C) 2006 Refractions Research Inc.
9 *
10 * This is free software; you can redistribute and/or modify it under
11 * the terms of the GNU Lesser General Public Licence as published
12 * by the Free Software Foundation.
13 * See the COPYING file for more information.
14 *
15 **********************************************************************/
16
17 #ifndef GEOS_GEOM_UTIL_POINTEXTRACTER_H
18 #define GEOS_GEOM_UTIL_POINTEXTRACTER_H
19
20 #include <geos/export.h>
21 #include <geos/geom/GeometryFilter.h>
22 #include <geos/geom/Point.h>
23 #include <geos/platform.h>
24 #include <vector>
25
26 namespace geos {
27 namespace geom { // geos.geom
28 namespace util { // geos.geom.util
29
33 class GEOS_DLL PointExtracter: public GeometryFilter {
34
35 public:
42 static void getPoints(const Geometry &geom, Point::ConstVect &ret)
43 {
44 PointExtracter pe(ret);
45 geom.apply_ro(&pe);
46 }
47
52 PointExtracter(Point::ConstVect& newComps)
53 :
54 comps(newComps)
55 {}
56
57 void filter_rw(Geometry *geom)
58 {
59 if ( const Point *p=dynamic_cast<const Point *>(geom) )
60 comps.push_back(p);
61 }
62
63 void filter_ro(const Geometry *geom)
64 {
65 if ( const Point *p=dynamic_cast<const Point *>(geom) )
66 comps.push_back(p);
67 }
68
69 private:
70
71 Point::ConstVect& comps;
72
73 // Declare type as noncopyable
74 PointExtracter(const PointExtracter& other);
75 PointExtracter& operator=(const PointExtracter& rhs);
76 };
77
78 } // namespace geos.geom.util
79 } // namespace geos.geom
80 } // namespace geos
81
82 #endif
83
84 /**********************************************************************
85 * $Log$
86 * Revision 1.1 2006/03/09 16:46:49 strk
87 * geos::geom namespace definition, first pass at headers split
88 *
89 **********************************************************************/