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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  **********************************************************************/