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# GeometryFilter.h

    00001 /**********************************************************************
    00002  * $Id: GeometryFilter.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) 2005 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_GEOMETRYFILTER_H
    00018 #define GEOS_GEOM_GEOMETRYFILTER_H
    00019
    00020 //#include <geos/platform.h>
    00021
    00022 #include <geos/inline.h>
    00023
    00024 #include <string>
    00025 #include <vector>
    00026 #include <cassert>
    00027
    00028 namespace geos {
    00029         namespace geom { // geos::geom
    00030                 class Geometry;
    00031         }
    00032 }
    00033
    00034 namespace geos {
    00035 namespace geom { // geos::geom
    00036
    00037
    00049 class GeometryFilter {
    00050 public:
    00051         /*
    00052          * Performs an operation with or on <code>geom</code>.
    00053          *
    00054          * @param  geom  a <code>Geometry</code> to which the filter
    00055          *         is applied.
    00056          *
    00057          * NOTE: this are not pure abstract to allow read-only
    00058          * or read-write-only filters to avoid defining a fake
    00059          * version of the not-implemented kind.
    00060          */
    00061         virtual void filter_ro(const Geometry * /*geom*/) { assert(0); }
    00062         virtual void filter_rw(Geometry * /*geom*/) { assert(0); }
    00063
    00064         virtual ~GeometryFilter() {}
    00065 };
    00066
    00067 } // namespace geos::geom
    00068 } // namespace geos
    00069
    00070 //#ifdef GEOS_INLINE
    00071 //# include "geos/geom/GeometryFilter.inl"
    00072 //#endif
    00073
    00074 #endif // ndef GEOS_GEOM_GEOMETRYFILTER_H
    00075
    00076 /**********************************************************************
    00077  * $Log$
    00078  * Revision 1.4  2006/06/12 17:14:11  strk
    00079  * added assert(0) version of filter_ro() and filter_rw() to allow implementations to only defined the required one.
    00080  *
    00081  * Revision 1.3  2006/06/08 11:20:24  strk
    00082  * Added missing virtual destructor to abstract classes.
    00083  *
    00084  * Revision 1.2  2006/03/24 09:52:41  strk
    00085  * USE_INLINE => GEOS_INLINE
    00086  *
    00087  * Revision 1.1  2006/03/09 16:46:49  strk
    00088  * geos::geom namespace definition, first pass at headers split
    00089  *
    00090  **********************************************************************/