UniqueCoordinateArrayFilter.h

00001 /**********************************************************************
00002  *
00003  * GEOS - Geometry Engine Open Source
00004  * http://geos.osgeo.org
00005  *
00006  * Copyright (C) 2001-2002 Vivid Solutions Inc.
00007  * Copyright (C) 2006 Refractions Research Inc.
00008  *
00009  * This is free software; you can redistribute and/or modify it under
00010  * the terms of the GNU Lesser General Public Licence as published
00011  * by the Free Software Foundation. 
00012  * See the COPYING file for more information.
00013  *
00014  **********************************************************************/
00015 
00016 #ifndef GEOS_UTIL_UNIQUECOORDINATEARRAYFILTER_H
00017 #define GEOS_UTIL_UNIQUECOORDINATEARRAYFILTER_H
00018 
00019 #include <geos/export.h>
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 #ifdef _MSC_VER
00029 #pragma warning(push)
00030 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
00031 #endif
00032 
00033 namespace geos {
00034 namespace util { // geos::util
00035 
00036 /*
00037  *  A CoordinateFilter that fills a vector of Coordinate const pointers.
00038  *  The set of coordinates contains no duplicate points.
00039  *
00040  *  Last port: util/UniqueCoordinateArrayFilter.java rev. 1.17
00041  */
00042 class GEOS_DLL UniqueCoordinateArrayFilter: public geom::CoordinateFilter
00043 {
00044 public:
00050         UniqueCoordinateArrayFilter(geom::Coordinate::ConstVect &target)
00051                 : pts(target)
00052         {}
00053 
00060         virtual ~UniqueCoordinateArrayFilter() {}
00061 
00067         virtual void filter_ro(const geom::Coordinate *coord)
00068         {
00069                 if ( uniqPts.insert(coord).second )
00070                 {
00071                         pts.push_back(coord);
00072                 }
00073     }
00074 
00075 private:
00076         geom::Coordinate::ConstVect &pts;       // target set reference
00077         geom::Coordinate::ConstSet uniqPts;     // unique points set
00078 
00079     // Declare type as noncopyable
00080     UniqueCoordinateArrayFilter(const UniqueCoordinateArrayFilter& other);
00081     UniqueCoordinateArrayFilter& operator=(const UniqueCoordinateArrayFilter& rhs);
00082 };
00083 
00084 } // namespace geos::util
00085 } // namespace geos
00086 
00087 #ifdef _MSC_VER
00088 #pragma warning(pop)
00089 #endif
00090 
00091 #endif // GEOS_UTIL_UNIQUECOORDINATEARRAYFILTER_H

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