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qgsrastershaderfunction.h
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1 /* **************************************************************************
2  qgsrastershaderfunction.h - description
3  -------------------
4 begin : Fri Dec 28 2007
5 copyright : (C) 2007 by Peter J. Ersts
6 email : ersts@amnh.org
7 
8 ****************************************************************************/
9 
10 /* **************************************************************************
11  * *
12  * This program is free software; you can redistribute it and/or modify *
13  * it under the terms of the GNU General Public License as published by *
14  * the Free Software Foundation; either version 2 of the License, or *
15  * (at your option) any later version. *
16  * *
17  ***************************************************************************/
18 
19 
20 #ifndef QGSRASTERSHADERFUNCTION_H
21 #define QGSRASTERSHADERFUNCTION_H
22 
27 class CORE_EXPORT QgsRasterShaderFunction
28 {
29 
30  public:
31  QgsRasterShaderFunction( double theMinimumValue = 0.0, double theMaximumValue = 255.0 );
33 
35  virtual void setMaximumValue( double );
36 
38  virtual void setMinimumValue( double );
39 
41  virtual bool shade( double, int*, int*, int* );
42 
44  virtual bool shade( double, double, double, int*, int*, int* );
45 
46  protected:
48  double mMaximumValue;
49 
51  double mMinimumValue;
52 
55 };
56 #endif