Fawkes API  Fawkes Development Version
nothing.h
1 
2 /***************************************************************************
3  * nothing.h - Header of a filter that does nothing. Wonderful, isn't it.
4  * Used in FilterFactory to avoid NULL checks
5  *
6  * Created: Fri Jun 17 13:28:21 2005
7  * Copyright 2005-2007 Tim Niemueller [www.niemueller.de]
8  *
9  ****************************************************************************/
10 
11 /* This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation; either version 2 of the License, or
14  * (at your option) any later version. A runtime exception applies to
15  * this software (see LICENSE.GPL_WRE file mentioned below for details).
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20  * GNU Library General Public License for more details.
21  *
22  * Read the full text in the LICENSE.GPL_WRE file in the doc directory.
23  */
24 
25 #ifndef __FIREVISION_FILTER_NOTHING_H_
26 #define __FIREVISION_FILTER_NOTHING_H_
27 
28 #include <fvfilters/filter.h>
29 
30 namespace firevision {
31 #if 0 /* just to make Emacs auto-indent happy */
32 }
33 #endif
34 
35 /** @class FilterNothing <fvfilters/nothing.h>
36  * A filter that does... nothing.
37  * @author Tim Niemueller
38  */
39 
40 class FilterNothing : public Filter
41 {
42  public:
43  /** Constructor. */
44  FilterNothing() : Filter("FilterNothing") {}
45 
46  virtual void apply() {}
47 };
48 
49 } // end namespace firevision
50 
51 #endif
Filter interface.
Definition: filter.h:35
FilterNothing()
Constructor.
Definition: nothing.h:44
A filter that does...
Definition: nothing.h:40
virtual void apply()
Apply the filter.
Definition: nothing.h:46