GEOS  3.4.2
GeometryFilter.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) 2005 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_GEOM_GEOMETRYFILTER_H
00017 #define GEOS_GEOM_GEOMETRYFILTER_H
00018 
00019 //#include <geos/platform.h>
00020 #include <geos/export.h>
00021 #include <geos/inline.h>
00022 
00023 #include <string>
00024 #include <vector>
00025 #include <cassert>
00026 
00027 namespace geos {
00028         namespace geom { // geos::geom
00029                 class Geometry;
00030         }
00031 }
00032 
00033 namespace geos {
00034 namespace geom { // geos::geom
00035 
00036 
00048 class GEOS_DLL GeometryFilter {
00049 public:
00050         /*
00051          * Performs an operation with or on <code>geom</code>.
00052          *
00053          * @param  geom  a <code>Geometry</code> to which the filter
00054          *         is applied.
00055          *
00056          * NOTE: this are not pure abstract to allow read-only
00057          * or read-write-only filters to avoid defining a fake
00058          * version of the not-implemented kind.
00059          */
00060         virtual void filter_ro(const Geometry * /*geom*/) { assert(0); }
00061         virtual void filter_rw(Geometry * /*geom*/) { assert(0); }
00062 
00063         virtual ~GeometryFilter() {}
00064 };
00065 
00066 } // namespace geos::geom
00067 } // namespace geos
00068 
00069 #endif // ndef GEOS_GEOM_GEOMETRYFILTER_H