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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 = 0 );
34  ~QgsRasterNuller();
35 
36  struct NoData
37  {
38  double min;
39  double max;
40  };
41 
42  QgsRasterInterface * clone() const;
43 
44  int bandCount() const;
45 
46  QGis::DataType dataType( int bandNo ) const;
47 
48  QgsRasterBlock *block( int bandNo, const QgsRectangle &extent, int width, int height );
49 
50  void setNoData( int bandNo, 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
virtual int bandCount() const =0
Get number of bands.
A rectangle specified with double values.
Definition: qgsrectangle.h:35
QVector< bool > mHasOutputNoData
Raster pipe that deals with null values.
QVector< double > mOutputNoData
Raster data container.
QVector< QgsRasterRangeList > mNoData
virtual QGis::DataType dataType(int bandNo) const =0
Returns data type for the band specified by number.
Base class for processing filters like renderers, reprojector, resampler etc.
QList< QgsRasterRange > QgsRasterRangeList
virtual QgsRasterInterface * clone() const =0
Clone itself, create deep copy.
QgsRasterRangeList noData(int bandNo) const
DataType
Raster data types.
Definition: qgis.h:204
virtual QgsRasterBlock * block(int bandNo, const QgsRectangle &extent, int width, int height)=0
Read block of data using given extent and size.