QGIS API Documentation  2.99.0-Master (b698612)
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 "qgis_core.h"
22 #include "qgis_sip.h"
23 #include "qgsrasterrange.h"
24 #include "qgsrasterinterface.h"
25 
26 #include <QList>
27 
31 class CORE_EXPORT QgsRasterNuller : public QgsRasterInterface
32 {
33  public:
34  QgsRasterNuller( QgsRasterInterface *input = nullptr );
35 
36  struct NoData
37  {
38  double min;
39  double max;
40  };
41 
42  QgsRasterNuller *clone() const override SIP_FACTORY;
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, QgsRasterBlockFeedback *feedback = nullptr ) override SIP_FACTORY;
49 
50  void setNoData( int bandNo, const QgsRasterRangeList &noData );
51 
52  QgsRasterRangeList noData( int bandNo ) const { return mNoData.value( bandNo - 1 ); }
53 
55  void setOutputNoDataValue( int bandNo, double noData );
56 
57  private:
58  // no data indext from 0
59  QVector< QgsRasterRangeList > mNoData;
60  // no data to be set in output, indexed form 0
61  QVector<double> mOutputNoData;
62  QVector<bool> mHasOutputNoData;
63 };
64 
65 #endif // QGSRASTERNULLER_H
A rectangle specified with double values.
Definition: qgsrectangle.h:38
Raster pipe that deals with null values.
The Qgis class provides global constants for use throughout the application.
Definition: qgis.h:54
Raster data container.
#define SIP_FACTORY
Definition: qgis_sip.h:57
Base class for processing filters like renderers, reprojector, resampler etc.
QList< QgsRasterRange > QgsRasterRangeList
double value(int row, int column) const
Read a single value if type of block is numeric.
Feedback object tailored for raster block reading.