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GeometryFilter.h

00001 /**********************************************************************
00002  * $Id: GeometryFilter.h 2556 2009-06-06 22:22:28Z strk $
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 #include <geos/export.h>
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 GEOS_DLL 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  **********************************************************************/

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