00001 /********************************************************************** 00002 * $Id: UniqueCoordinateArrayFilter.h 1820 2006-09-06 16:54:23Z 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_UTIL_UNIQUECOORDINATEARRAYFILTER_H 00018 #define GEOS_UTIL_UNIQUECOORDINATEARRAYFILTER_H 00019 00020 #include <cassert> 00021 #include <set> 00022 #include <vector> 00023 00024 #include <geos/geom/CoordinateFilter.h> 00025 #include <geos/geom/CoordinateSequence.h> 00026 #include <geos/geom/Coordinate.h> 00027 00028 namespace geos { 00029 namespace util { // geos::util 00030 00031 /* 00032 * A CoordinateFilter that fills a vector of Coordinate const pointers. 00033 * The set of coordinates contains no duplicate points. 00034 * 00035 * Last port: util/UniqueCoordinateArrayFilter.java rev. 1.17 00036 */ 00037 class UniqueCoordinateArrayFilter: public geom::CoordinateFilter { 00038 00039 private: 00040 geom::Coordinate::ConstVect &pts; // target set reference 00041 geom::Coordinate::ConstSet uniqPts; // unique points set 00042 00043 public: 00049 UniqueCoordinateArrayFilter(geom::Coordinate::ConstVect &target) 00050 : pts(target) 00051 {} 00052 00059 virtual ~UniqueCoordinateArrayFilter() {} 00060 00066 virtual void filter_ro(const geom::Coordinate *coord) 00067 { 00068 if ( uniqPts.insert(coord).second ) 00069 { 00070 pts.push_back(coord); 00071 } 00072 } 00073 00074 }; 00075 00076 } // namespace geos::util 00077 } // namespace geos 00078 00079 #endif // GEOS_UTIL_UNIQUECOORDINATEARRAYFILTER_H 00080 00081 /********************************************************************** 00082 * $Log$ 00083 * Revision 1.4 2006/06/19 23:33:03 strk 00084 * Don't *require* CoordinateFilters to define both read-only and read-write methods. 00085 * 00086 * Revision 1.3 2006/06/12 10:10:39 strk 00087 * Fixed getGeometryN() to take size_t rather then int, changed unsigned int parameters to size_t. 00088 * 00089 * Revision 1.2 2006/04/10 09:21:23 mloskot 00090 * Added new test for UniqueCoordinateArrayFilter class. Small fixes related to signed/unsigned comparison. 00091 * 00092 * Revision 1.1 2006/03/09 16:46:49 strk 00093 * geos::geom namespace definition, first pass at headers split 00094 * 00095 **********************************************************************/