/usr/include/qgis/qgscubicrasterresampler.h is in libqgis-dev 2.0.1-2build2.
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qgscubicrasterresampler.h
----------------------------
begin : December 2011
copyright : (C) 2011 by Marco Hugentobler
email : marco at sourcepole dot ch
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef QGSCUBICRASTERRESAMPLER_H
#define QGSCUBICRASTERRESAMPLER_H
#include "qgsrasterresampler.h"
#include <QColor>
/** \ingroup core
Cubic Raster Resampler
*/
class CORE_EXPORT QgsCubicRasterResampler: public QgsRasterResampler
{
public:
QgsCubicRasterResampler();
~QgsCubicRasterResampler();
QgsRasterResampler * clone() const;
void resample( const QImage& srcImage, QImage& dstImage );
QString type() const { return "cubic"; }
private:
static void xDerivativeMatrix( int nCols, int nRows, double* matrix, const int* colorMatrix );
static void yDerivativeMatrix( int nCols, int nRows, double* matrix, const int* colorMatrix );
void calculateControlPoints( int nCols, int nRows, int currentRow, int currentCol, int* redMatrix, int* greenMatrix, int* blueMatrix,
int* alphaMatrix, double* xDerivativeMatrixRed, double* xDerivativeMatrixGreen, double* xDerivativeMatrixBlue,
double* xDerivativeMatrixAlpha, double* yDerivativeMatrixRed, double* yDerivativeMatrixGreen, double* yDerivativeMatrixBlue,
double* yDerivativeMatrixAlpha );
/**Use cubic curve interpoation at the borders of the raster*/
QRgb curveInterpolation( QRgb pt1, QRgb pt2, double t, double d1red, double d1green, double d1blue, double d1alpha, double d2red, double d2green,
double d2blue, double d2alpha );
static double calcBernsteinPoly( int n, int i, double t );
static int lower( int n, int i );
static double power( double a, int b );//calculates a power b
static int faculty( int n );
//control points
//red
double cRed00; double cRed10; double cRed20; double cRed30; double cRed01; double cRed11; double cRed21; double cRed31;
double cRed02; double cRed12; double cRed22; double cRed32; double cRed03; double cRed13; double cRed23; double cRed33;
//green
double cGreen00; double cGreen10; double cGreen20; double cGreen30; double cGreen01; double cGreen11; double cGreen21; double cGreen31;
double cGreen02; double cGreen12; double cGreen22; double cGreen32; double cGreen03; double cGreen13; double cGreen23; double cGreen33;
//blue
double cBlue00; double cBlue10; double cBlue20; double cBlue30; double cBlue01; double cBlue11; double cBlue21; double cBlue31;
double cBlue02; double cBlue12; double cBlue22; double cBlue32; double cBlue03; double cBlue13; double cBlue23; double cBlue33;
//alpha
double cAlpha00; double cAlpha10; double cAlpha20; double cAlpha30; double cAlpha01; double cAlpha11; double cAlpha21; double cAlpha31;
double cAlpha02; double cAlpha12; double cAlpha22; double cAlpha32; double cAlpha03; double cAlpha13; double cAlpha23; double cAlpha33;
};
#endif // QGSCUBICRASTERRESAMPLER_H
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