QGIS API Documentation 3.27.0-Master (f261cc1f8b)
qgsrasterresamplefilter.h
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1/***************************************************************************
2 qgsrasterresamplefilter.h
3 -------------------
4 begin : December 2011
5 copyright : (C) 2011 by Marco Hugentobler
6 email : marco at sourcepole dot ch
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 QGSRASTERRESAMPLEFILTER_H
19#define QGSRASTERRESAMPLEFILTER_H
20
21#include "qgis_core.h"
22#include "qgis_sip.h"
23#include "qgsrasterinterface.h"
24#include "qgsrasterresampler.h"
25
26class QDomElement;
27
33{
34 public:
36
38
39 int bandCount() const override;
40
41 Qgis::DataType dataType( int bandNo ) const override;
42
43 bool setInput( QgsRasterInterface *input ) override;
44
45 QgsRasterBlock *block( int bandNo, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback = nullptr ) override SIP_FACTORY;
46
48 void setZoomedInResampler( QgsRasterResampler *r SIP_TRANSFER );
49 const QgsRasterResampler *zoomedInResampler() const { return mZoomedInResampler.get(); }
50
52 void setZoomedOutResampler( QgsRasterResampler *r SIP_TRANSFER );
53 const QgsRasterResampler *zoomedOutResampler() const { return mZoomedOutResampler.get(); }
54
55 void setMaxOversampling( double os ) { mMaxOversampling = os; }
56 double maxOversampling() const { return mMaxOversampling; }
57
58 void writeXml( QDomDocument &doc, QDomElement &parentElem ) const override;
59
61 void readXml( const QDomElement &filterElem ) override;
62
63 protected:
65 std::unique_ptr< QgsRasterResampler > mZoomedInResampler;
67 std::unique_ptr< QgsRasterResampler > mZoomedOutResampler;
68
70 double mMaxOversampling = 2.0;
71
72 private:
73};
74
75#endif // QGSRASTERRESAMPLEFILTER_H
DataType
Raster data types.
Definition: qgis.h:129
Feedback object tailored for raster block reading.
Raster data container.
Base class for processing filters like renderers, reprojector, resampler etc.
virtual QgsRasterInterface * clone() const =0
Clone itself, create deep copy.
virtual QgsRasterBlock * block(int bandNo, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback=nullptr)=0
Read block of data using given extent and size.
virtual Qgis::DataType dataType(int bandNo) const =0
Returns data type for the band specified by number.
virtual int bandCount() const =0
Gets number of bands.
virtual void readXml(const QDomElement &filterElem)
Sets base class members from xml. Usually called from create() methods of subclasses.
virtual void writeXml(QDomDocument &doc, QDomElement &parentElem) const
Write base class members to xml.
virtual bool setInput(QgsRasterInterface *input)
Set input.
Resample filter pipe for rasters.
const QgsRasterResampler * zoomedInResampler() const
const QgsRasterResampler * zoomedOutResampler() const
std::unique_ptr< QgsRasterResampler > mZoomedInResampler
Resampler used if screen resolution is higher than raster resolution (zoomed in). 0 means no resampli...
std::unique_ptr< QgsRasterResampler > mZoomedOutResampler
Resampler used if raster resolution is higher than raster resolution (zoomed out)....
Interface for resampling rasters (e.g.
A rectangle specified with double values.
Definition: qgsrectangle.h:42
#define SIP_TRANSFER
Definition: qgis_sip.h:36
#define SIP_FACTORY
Definition: qgis_sip.h:76