GeometryFilter.h

/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 * Copyright (C) 2005 2006 Refractions Research Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation.
 * See the COPYING file for more information.
 *
 **********************************************************************/
 
#pragma once
 
#include <geos/export.h>
 
#include <string>
#include <vector>
#include <cassert>
 
namespace geos {
namespace geom { // geos::geom
class Geometry;
}
}
 
namespace geos {
namespace geom { // geos::geom
 
 
class GEOS_DLL GeometryFilter {
public:
    /*
     * Performs an operation with or on <code>geom</code>.
     *
     * @param  geom  a <code>Geometry</code> to which the filter
     *         is applied.
     *
     * NOTE: this are not pure abstract to allow read-only
     * or read-write-only filters to avoid defining a fake
     * version of the not-implemented kind.
     */
    virtual void
    filter_ro(const Geometry* /*geom*/)
    {
        assert(0);
    }
    virtual void
    filter_rw(Geometry* /*geom*/)
    {
        assert(0);
    }
 
    virtual
    ~GeometryFilter() {}
};
 
} // namespace geos::geom
} // namespace geos