blender-archive/source/blender/compositor/operations/COM_MapRangeOperation.h

/*
 * 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.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Copyright 2012, Blender Foundation.
 */

#ifndef __COM_MAPRANGEOPERATION_H__
#define __COM_MAPRANGEOPERATION_H__
#include "COM_NodeOperation.h"
#include "DNA_texture_types.h"

/**
 * this program converts an input color to an output value.
 * it assumes we are in sRGB color space.
 */
class MapRangeOperation : public NodeOperation {
 private:
  /**
   * Cached reference to the inputProgram
   */
  SocketReader *m_inputOperation;
  SocketReader *m_sourceMinOperation;
  SocketReader *m_sourceMaxOperation;
  SocketReader *m_destMinOperation;
  SocketReader *m_destMaxOperation;

  bool m_useClamp;

 public:
  /**
   * Default constructor
   */
  MapRangeOperation();

  /**
   * the inner loop of this program
   */
  void executePixelSampled(float output[4], float x, float y, PixelSampler sampler);

  /**
   * Initialize the execution
   */
  void initExecution();

  /**
   * Deinitialize the execution
   */
  void deinitExecution();

  /**
   * Clamp the output
   */
  void setUseClamp(bool value)
  {
    this->m_useClamp = value;
  }
};
#endif