QGIS API Documentation 3.33.0-Master (bf22a165b3)
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qgsaspectfilter.h
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1/***************************************************************************
2 qgsaspectfilter.h - description
3 ---------------------------------
4 begin : August 7th, 2009
5 copyright : (C) 2009 by Marco Hugentobler
6 email : marco dot hugentobler at karto dot baug dot ethz 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 QGSASPECTFILTER_H
19#define QGSASPECTFILTER_H
20
21#include "qgsderivativefilter.h"
22#include "qgis_analysis.h"
23
30class ANALYSIS_EXPORT QgsAspectFilter: public QgsDerivativeFilter
31{
32 public:
33 QgsAspectFilter( const QString &inputFile, const QString &outputFile, const QString &outputFormat );
34
35 float processNineCellWindow( float *x11, float *x21, float *x31,
36 float *x12, float *x22, float *x32,
37 float *x13, float *x23, float *x33 ) override;
38
39
40#ifdef HAVE_OPENCL
41 private:
42
43 const QString openClProgramBaseName() const override
44 {
45 return QStringLiteral( "aspect" );
46 }
47#endif
48
49};
50
51#endif // QGSASPECTFILTER_H
Calculates aspect values in a window of 3x3 cells based on first order derivatives in x- and y- direc...
Adds the ability to calculate derivatives in x- and y-directions.
float processNineCellWindow(float *x11, float *x21, float *x31, float *x12, float *x22, float *x32, float *x13, float *x23, float *x33) override=0
Calculates output value from nine input values.