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 /*
  *  Copyright (c) 2005 Boudewijn Rempt <boud@valdyas.org>
  *  Copyright (c) 2006-2007 Cyrille Berger <cberger@cberger.net>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 #ifndef KO_MIX_COLORS_OP_H
 #define KO_MIX_COLORS_OP_H
 
 #include <limits.h>
 
 /**
  * Base class of the mix color operation. It's defined by
  * sum(colors[i] * weights[i]) / 255. You access the KoMixColorsOp
  * of a colorspace by calling KoColorSpace::mixColorsOp.
  */
 class KoMixColorsOp
 {
 public:
     virtual ~KoMixColorsOp() { }
     /**
      * Mix the colors.
      * @param colors a pointer toward the source pixels
      * @param weights the coeffient of the source pixels (if you want
      *                to average the sum of weights must be equal to 255)
      * @param nColors the number of pixels in the colors array
      * @param dst the destination pixel
      *
      * @code
      * quint8* colors[nColors];
      * colors[0] = ptrToFirstPixel;
      * colors[1] = ptrToSecondPixel;
      * ...
      * colors[nColors-1] = ptrToLastPixel;
      * qint16 weights[nColors];
      * weights[0] = firstWeight;
      * weights[1] = secondWeight;
      * ...
      * weights[nColors-1] = lastWeight;
      *
      * mixColors(colors, weights, nColors, ptrToDestinationPixel);
      * @endcode
      */
     virtual void mixColors(const quint8 * const*colors, const qint16 *weights, quint32 nColors, quint8 *dst) const = 0;
     virtual void mixColors(const quint8 *colors, const qint16 *weights, quint32 nColors, quint8 *dst) const = 0;
 };
 
 #endif