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# PointExtracter.h

    00001 /**********************************************************************
    00002  * $Id: PointExtracter.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_POINTEXTRACTER_H
    00018 #define GEOS_GEOM_UTIL_POINTEXTRACTER_H
    00019
    00020 #include <geos/export.h>
    00021 #include <geos/geom/GeometryFilter.h>
    00022 #include <geos/geom/Point.h>
    00023 #include <geos/platform.h>
    00024 #include <vector>
    00025
    00026 namespace geos {
    00027 namespace geom { // geos.geom
    00028 namespace util { // geos.geom.util
    00029
    00033 class GEOS_DLL PointExtracter: public GeometryFilter {
    00034
    00035 public:
    00042         static void getPoints(const Geometry &geom, Point::ConstVect &ret)
    00043         {
    00044                 PointExtracter pe(ret);
    00045                 geom.apply_ro(&pe);
    00046         }
    00047
    00052         PointExtracter(Point::ConstVect& newComps)
    00053                 :
    00054                 comps(newComps)
    00055                 {}
    00056
    00057         void filter_rw(Geometry *geom)
    00058         {
    00059 if ( const Point *p=dynamic_cast<const Point *>(geom) )
    00060                 comps.push_back(p);
    00061         }
    00062
    00063         void filter_ro(const Geometry *geom)
    00064         {
    00065 if ( const Point *p=dynamic_cast<const Point *>(geom) )
    00066                 comps.push_back(p);
    00067         }
    00068
    00069 private:
    00070
    00071         Point::ConstVect& comps;
    00072
    00073     // Declare type as noncopyable
    00074     PointExtracter(const PointExtracter& other);
    00075     PointExtracter& operator=(const PointExtracter& rhs);
    00076 };
    00077
    00078 } // namespace geos.geom.util
    00079 } // namespace geos.geom
    00080 } // namespace geos
    00081
    00082 #endif
    00083
    00084 /**********************************************************************
    00085  * $Log$
    00086  * Revision 1.1  2006/03/09 16:46:49  strk
    00087  * geos::geom namespace definition, first pass at headers split
    00088  *
    00089  **********************************************************************/