src/core/raster/qgsrastershader.cpp

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/* **************************************************************************
                qgsrastershader.cpp -  description
                       -------------------
begin                : Fri Dec 28 2007
copyright            : (C) 2007 by Peter J. Ersts
email                : ersts@amnh.org

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

/* **************************************************************************
 *                                                                         *
 *   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 "qgsrastershader.h"

QgsRasterShader::QgsRasterShader( double theMinimumValue, double theMaximumValue )
{
  QgsDebugMsg( "called." );

  mMinimumValue = theMinimumValue;
  mMaximumValue = theMaximumValue;
  mRasterShaderFunction = new QgsRasterShaderFunction( mMinimumValue, mMaximumValue );
}

QgsRasterShader::~QgsRasterShader()
{
  delete mRasterShaderFunction;
}

bool QgsRasterShader::shade( double theValue, int* theReturnRedValue, int* theReturnGreenValue, int* theReturnBlueValue )
{
  if ( 0 != mRasterShaderFunction )
  {
    return mRasterShaderFunction->shade( theValue, theReturnRedValue, theReturnGreenValue, theReturnBlueValue );
  }

  return false;
}
bool QgsRasterShader::shade( double theRedValue, double theGreenValue, double theBlueValue, int* theReturnRedValue, int* theReturnGreenValue, int* theReturnBlueValue )
{
  if ( 0 != mRasterShaderFunction )
  {
    return mRasterShaderFunction->shade( theRedValue, theGreenValue, theBlueValue, theReturnRedValue, theReturnGreenValue, theReturnBlueValue );
  }

  return false;
}

void QgsRasterShader::setRasterShaderFunction( QgsRasterShaderFunction* theFunction )
{
  QgsDebugMsg( "called." );

  if ( mRasterShaderFunction == theFunction )
    return;

  if ( 0 != theFunction )
  {
    delete mRasterShaderFunction;
    mRasterShaderFunction = theFunction;
  }
}

void QgsRasterShader::setMaximumValue( double theValue )
{
  QgsDebugMsg( "Value = " + QString::number( theValue ) );

  mMaximumValue = theValue;
  if ( 0 != mRasterShaderFunction )
  {
    mRasterShaderFunction->setMaximumValue( theValue );
  }
}

void QgsRasterShader::setMinimumValue( double theValue )
{
  QgsDebugMsg( "Value = " + QString::number( theValue ) );

  mMinimumValue = theValue;
  if ( 0 != mRasterShaderFunction )
  {
    mRasterShaderFunction->setMinimumValue( theValue );
  }
}