GEOS 3.2.1
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00001 /********************************************************************** 00002 * $Id: PointExtracter.h 2772 2009-12-03 19:30:54Z mloskot $ 00003 * 00004 * GEOS - Geometry Engine Open Source 00005 * http://geos.refractions.net 00006 * 00007 * Copyright (C) 2001-2002 Vivid Solutions Inc. 00008 * Copyright (C) 2006 Refractions Research Inc. 00009 * 00010 * This is free software; you can redistribute and/or modify it under 00011 * the terms of the GNU Lesser General Public Licence as published 00012 * by the Free Software Foundation. 00013 * See the COPYING file for more information. 00014 * 00015 **********************************************************************/ 00016 00017 #ifndef GEOS_GEOM_UTIL_POINTEXTRACTER_H 00018 #define GEOS_GEOM_UTIL_POINTEXTRACTER_H 00019 00020 #include <geos/export.h> 00021 #include <geos/geom/GeometryFilter.h> 00022 #include <geos/geom/Point.h> 00023 #include <geos/platform.h> 00024 #include <vector> 00025 00026 namespace geos { 00027 namespace geom { // geos.geom 00028 namespace util { // geos.geom.util 00029 00033 class GEOS_DLL PointExtracter: public GeometryFilter { 00034 00035 public: 00042 static void getPoints(const Geometry &geom, Point::ConstVect &ret) 00043 { 00044 PointExtracter pe(ret); 00045 geom.apply_ro(&pe); 00046 } 00047 00052 PointExtracter(Point::ConstVect& newComps) 00053 : 00054 comps(newComps) 00055 {} 00056 00057 void filter_rw(Geometry *geom) 00058 { 00059 if ( const Point *p=dynamic_cast<const Point *>(geom) ) 00060 comps.push_back(p); 00061 } 00062 00063 void filter_ro(const Geometry *geom) 00064 { 00065 if ( const Point *p=dynamic_cast<const Point *>(geom) ) 00066 comps.push_back(p); 00067 } 00068 00069 private: 00070 00071 Point::ConstVect& comps; 00072 00073 // Declare type as noncopyable 00074 PointExtracter(const PointExtracter& other); 00075 PointExtracter& operator=(const PointExtracter& rhs); 00076 }; 00077 00078 } // namespace geos.geom.util 00079 } // namespace geos.geom 00080 } // namespace geos 00081 00082 #endif 00083 00084 /********************************************************************** 00085 * $Log$ 00086 * Revision 1.1 2006/03/09 16:46:49 strk 00087 * geos::geom namespace definition, first pass at headers split 00088 * 00089 **********************************************************************/