GEOS
3.2.3
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00001 /********************************************************************** 00002 * $Id: LinearComponentExtracter.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_LINEARCOMPONENTEXTRACTER_H 00018 #define GEOS_GEOM_UTIL_LINEARCOMPONENTEXTRACTER_H 00019 00020 00021 #include <geos/export.h> 00022 #include <vector> 00023 00024 #include <geos/geom/GeometryComponentFilter.h> 00025 #include <geos/geom/Geometry.h> // to be removed when we have the .inl 00026 #include <geos/geom/LineString.h> // to be removed when we have the .inl 00027 //#include <geos/platform.h> 00028 00029 namespace geos { 00030 namespace geom { // geos.geom 00031 namespace util { // geos.geom.util 00032 00036 class GEOS_DLL LinearComponentExtracter: public GeometryComponentFilter { 00037 00038 private: 00039 00040 LineString::ConstVect &comps; 00041 00042 // Declare type as noncopyable 00043 LinearComponentExtracter(const LinearComponentExtracter& other); 00044 LinearComponentExtracter& operator=(const LinearComponentExtracter& rhs); 00045 00046 public: 00054 static void getLines(const Geometry &geom, std::vector<const LineString*> &ret) 00055 { 00056 LinearComponentExtracter lce(ret); 00057 geom.apply_ro(&lce); 00058 } 00059 00064 LinearComponentExtracter(std::vector<const LineString*> &newComps) 00065 : 00066 comps(newComps) 00067 {} 00068 00069 void filter_rw(Geometry *geom) 00070 { 00071 if ( const LineString *ls=dynamic_cast<const LineString *>(geom) ) 00072 comps.push_back(ls); 00073 } 00074 00075 void filter_ro(const Geometry *geom) 00076 { 00077 if ( const LineString *ls=dynamic_cast<const LineString *>(geom) ) 00078 comps.push_back(ls); 00079 } 00080 00081 }; 00082 00083 } // namespace geos.geom.util 00084 } // namespace geos.geom 00085 } // namespace geos 00086 00087 #endif 00088 00089 /********************************************************************** 00090 * $Log$ 00091 * Revision 1.1 2006/03/09 16:46:49 strk 00092 * geos::geom namespace definition, first pass at headers split 00093 * 00094 **********************************************************************/