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UniqueCoordinateArrayFilter.h

00001 /**********************************************************************
00002  * $Id: UniqueCoordinateArrayFilter.h 2958 2010-03-29 11:29:40Z 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 <geos/export.h>
00021 #include <cassert>
00022 #include <set>
00023 #include <vector>
00024 
00025 #include <geos/geom/CoordinateFilter.h>
00026 #include <geos/geom/CoordinateSequence.h>
00027 #include <geos/geom/Coordinate.h>
00028 
00029 #ifdef _MSC_VER
00030 #pragma warning(push)
00031 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
00032 #endif
00033 
00034 namespace geos {
00035 namespace util { // geos::util
00036 
00037 /*
00038  *  A CoordinateFilter that fills a vector of Coordinate const pointers.
00039  *  The set of coordinates contains no duplicate points.
00040  *
00041  *  Last port: util/UniqueCoordinateArrayFilter.java rev. 1.17
00042  */
00043 class GEOS_DLL UniqueCoordinateArrayFilter: public geom::CoordinateFilter
00044 {
00045 public:
00051         UniqueCoordinateArrayFilter(geom::Coordinate::ConstVect &target)
00052                 : pts(target)
00053         {}
00054 
00061         virtual ~UniqueCoordinateArrayFilter() {}
00062 
00068         virtual void filter_ro(const geom::Coordinate *coord)
00069         {
00070                 if ( uniqPts.insert(coord).second )
00071                 {
00072                         pts.push_back(coord);
00073                 }
00074     }
00075 
00076 private:
00077         geom::Coordinate::ConstVect &pts;       // target set reference
00078         geom::Coordinate::ConstSet uniqPts;     // unique points set
00079 
00080     // Declare type as noncopyable
00081     UniqueCoordinateArrayFilter(const UniqueCoordinateArrayFilter& other);
00082     UniqueCoordinateArrayFilter& operator=(const UniqueCoordinateArrayFilter& rhs);
00083 };
00084 
00085 } // namespace geos::util
00086 } // namespace geos
00087 
00088 #ifdef _MSC_VER
00089 #pragma warning(pop)
00090 #endif
00091 
00092 #endif // GEOS_UTIL_UNIQUECOORDINATEARRAYFILTER_H
00093 
00094 /**********************************************************************
00095  * $Log$
00096  * Revision 1.4  2006/06/19 23:33:03  strk
00097  * Don't *require* CoordinateFilters to define both read-only and read-write methods.
00098  *
00099  * Revision 1.3  2006/06/12 10:10:39  strk
00100  * Fixed getGeometryN() to take size_t rather then int, changed unsigned int parameters to size_t.
00101  *
00102  * Revision 1.2  2006/04/10 09:21:23  mloskot
00103  * Added new test for UniqueCoordinateArrayFilter class. Small fixes related to signed/unsigned comparison.
00104  *
00105  * Revision 1.1  2006/03/09 16:46:49  strk
00106  * geos::geom namespace definition, first pass at headers split
00107  *
00108  **********************************************************************/

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