QGIS API Documentation  3.13.0-Master (b73bd58cfb)
qgsbilinearrasterresampler.cpp
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1 /***************************************************************************
2  qgsbilinearrasterresampler.cpp
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 
19 #include "qgsgdalutils.h"
20 #include <QImage>
21 #include <cmath>
22 
24 {
25  return new QgsBilinearRasterResampler();
26 }
27 
29 {
30  return 1;
31 }
32 
34 void QgsBilinearRasterResampler::resample( const QImage &srcImage, QImage &dstImage )
35 {
36  dstImage = QgsGdalUtils::resampleImage( srcImage, dstImage.size(), GRIORA_Bilinear );
37 }
39 
40 QImage QgsBilinearRasterResampler::resampleV2( const QImage &source, const QSize &size )
41 {
42  return source.scaled( size.width(), size.height(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation );
43 }
44 
46 {
47  return QStringLiteral( "bilinear" );
48 }
#define Q_NOWARN_DEPRECATED_PUSH
Definition: qgis.h:731
int tileBufferPixels() const override
Returns the optional tile buffer size in pixels.
QgsBilinearRasterResampler * clone() const override
Gets a deep copy of this object.
Q_DECL_DEPRECATED void resample(const QImage &srcImage, QImage &dstImage) override
Resamples a source image to a destination image.
#define Q_NOWARN_DEPRECATED_POP
Definition: qgis.h:732
QImage resampleV2(const QImage &source, const QSize &size) override
Resamples a source image to the specified size.
Bilinear Raster Resampler.
QgsBilinearRasterResampler()=default
Constructor for QgsBilinearRasterResampler.
QString type() const override
Gets a descriptive type identifier for this raster resampler.
static QImage resampleImage(const QImage &image, QSize outputSize, GDALRIOResampleAlg resampleAlg)
Resamples a QImage image using GDAL resampler.