qgsrastershaderfunction.cpp

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/* **************************************************************************
                qgsrastershaderfunction.cpp -  description
                       -------------------
begin                : Fri Dec 28 2007
copyright            : (C) 2007 by Peter J. Ersts
email                : [email protected]

****************************************************************************/

/* **************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
#include "qgslogger.h"

#include "qgsrastershaderfunction.h"

QgsRasterShaderFunction::QgsRasterShaderFunction( double theMinimumValue, double theMaximumValue )
{
  QgsDebugMsgLevel( "entered.", 4 );

  mMinimumValue = theMinimumValue;
  mMaximumValue = theMaximumValue;
  mMinimumMaximumRange = mMaximumValue - mMinimumValue;
}

void QgsRasterShaderFunction::setMaximumValue( double theValue )
{
  QgsDebugMsgLevel( "value = " + QString::number( theValue ), 4 );

  mMaximumValue = theValue;
  mMinimumMaximumRange = mMaximumValue - mMinimumValue;
}

void QgsRasterShaderFunction::setMinimumValue( double theValue )
{
  QgsDebugMsgLevel( "value = " + QString::number( theValue ), 4 );

  mMinimumValue = theValue;
  mMinimumMaximumRange = mMaximumValue - mMinimumValue;
}

bool QgsRasterShaderFunction::shade( double theValue, int* theReturnRedValue, int* theReturnGreenValue, int* theReturnBlueValue, int* theReturnAlphaValue )
{
  Q_UNUSED( theValue );

  *theReturnRedValue = 0;
  *theReturnGreenValue = 0;
  *theReturnBlueValue = 0;
  *theReturnAlphaValue = 0;

  return false;
}

bool QgsRasterShaderFunction::shade( double theRedValue, double theGreenValue, double theBlueValue, double theAlphaValue, int* theReturnRedValue, int* theReturnGreenValue, int* theReturnBlueValue, int *theReturnAlphaValue )
{
  Q_UNUSED( theRedValue );
  Q_UNUSED( theGreenValue );
  Q_UNUSED( theBlueValue );
  Q_UNUSED( theAlphaValue );

  *theReturnRedValue = 0;
  *theReturnGreenValue = 0;
  *theReturnBlueValue = 0;
  *theReturnAlphaValue = 0;

  return false;
}