GEOS  3.8.0dev
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/export.h>
20 #include <geos/inline.h>
21 
22 #include <string>
23 #include <vector>
24 #include <cassert>
25 
26 namespace geos {
27 namespace geom { // geos::geom
28 class Geometry;
29 }
30 }
31 
32 namespace geos {
33 namespace geom { // geos::geom
34 
35 
47 class GEOS_DLL GeometryFilter {
48 public:
49  /*
50  * Performs an operation with or on <code>geom</code>.
51  *
52  * @param geom a <code>Geometry</code> to which the filter
53  * is applied.
54  *
55  * NOTE: this are not pure abstract to allow read-only
56  * or read-write-only filters to avoid defining a fake
57  * version of the not-implemented kind.
58  */
59  virtual void
60  filter_ro(const Geometry* /*geom*/)
61  {
62  assert(0);
63  }
64  virtual void
65  filter_rw(Geometry* /*geom*/)
66  {
67  assert(0);
68  }
69 
70  virtual
71  ~GeometryFilter() {}
72 };
73 
74 } // namespace geos::geom
75 } // namespace geos
76 
77 #endif // ndef GEOS_GEOM_GEOMETRYFILTER_H
Geometry classes support the concept of applying a Geometry filter to the Geometry.
Definition: GeometryFilter.h:47
Basic implementation of Geometry, constructed and destructed by GeometryFactory.
Definition: Geometry.h:187
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:25