QGIS API Documentation  2.18.21-Las Palmas (9fba24a)
qgsrasternuller.h
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1 /***************************************************************************
2  qgsrasternuller.h
3  -------------------
4  begin : August 2012
5  copyright : (C) 2012 by Radim Blazek
6  email : radim dot blazek at gmail dot com
7  ***************************************************************************/
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. *
15  * *
16  ***************************************************************************/
17 
18 #ifndef QGSRASTERNULLER_H
19 #define QGSRASTERNULLER_H
20 
21 #include "qgsrasterdataprovider.h"
22 #include "qgsrasterrange.h"
23 #include "qgsrasterinterface.h"
24 
25 #include <QList>
26 
30 class CORE_EXPORT QgsRasterNuller : public QgsRasterInterface
31 {
32  public:
33  QgsRasterNuller( QgsRasterInterface* input = nullptr );
34  ~QgsRasterNuller();
35 
36  struct NoData
37  {
38  double min;
39  double max;
40  };
41 
42  QgsRasterNuller * clone() const override;
43 
44  int bandCount() const override;
45 
46  QGis::DataType dataType( int bandNo ) const override;
47 
48  QgsRasterBlock *block( int bandNo, const QgsRectangle &extent, int width, int height ) override;
49  QgsRasterBlock *block2( int bandNo, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback* feedback = nullptr ) override;
50 
51  void setNoData( int bandNo, const QgsRasterRangeList& noData );
52 
53  QgsRasterRangeList noData( int bandNo ) const { return mNoData.value( bandNo -1 ); }
54 
56  void setOutputNoDataValue( int bandNo, double noData );
57 
58  private:
59  // no data indext from 0
61  // no data to be set in output, indexed form 0
62  QVector<double> mOutputNoData;
63  QVector<bool> mHasOutputNoData;
64 };
65 
66 #endif // QGSRASTERNULLER_H
A rectangle specified with double values.
Definition: qgsrectangle.h:35
Raster pipe that deals with null values.
T value(int i) const
Raster data container.
QgsRasterRangeList noData(int bandNo) const
Base class for processing filters like renderers, reprojector, resampler etc.
DataType
Raster data types.
Definition: qgis.h:133
Feedback object tailored for raster block reading.