GEOS  3.4.2
GeometryFilter.h
1 /**********************************************************************
2  *
3  * GEOS - Geometry Engine Open Source
4  * http://geos.osgeo.org
5  *
6  * Copyright (C) 2001-2002 Vivid Solutions Inc.
7  * Copyright (C) 2005 2006 Refractions Research Inc.
8  *
9  * This is free software; you can redistribute and/or modify it under
10  * the terms of the GNU Lesser General Public Licence as published
11  * by the Free Software Foundation.
12  * See the COPYING file for more information.
13  *
14  **********************************************************************/
15 
16 #ifndef GEOS_GEOM_GEOMETRYFILTER_H
17 #define GEOS_GEOM_GEOMETRYFILTER_H
18 
19 //#include <geos/platform.h>
20 #include <geos/export.h>
21 #include <geos/inline.h>
22 
23 #include <string>
24 #include <vector>
25 #include <cassert>
26 
27 namespace geos {
28  namespace geom { // geos::geom
29  class Geometry;
30  }
31 }
32 
33 namespace geos {
34 namespace geom { // geos::geom
35 
36 
48 class GEOS_DLL GeometryFilter {
49 public:
50  /*
51  * Performs an operation with or on <code>geom</code>.
52  *
53  * @param geom a <code>Geometry</code> to which the filter
54  * is applied.
55  *
56  * NOTE: this are not pure abstract to allow read-only
57  * or read-write-only filters to avoid defining a fake
58  * version of the not-implemented kind.
59  */
60  virtual void filter_ro(const Geometry * /*geom*/) { assert(0); }
61  virtual void filter_rw(Geometry * /*geom*/) { assert(0); }
62 
63  virtual ~GeometryFilter() {}
64 };
65 
66 } // namespace geos::geom
67 } // namespace geos
68 
69 #endif // ndef GEOS_GEOM_GEOMETRYFILTER_H
Geometry classes support the concept of applying a Geometry filter to the Geometry.
Definition: GeometryFilter.h:48
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition: Geometry.h:167