/*
 * Software License Agreement (BSD License)
 *
 *  Point Cloud Library (PCL) - www.pointclouds.org
 *  Copyright (c) 2010-2011, Willow Garage, Inc.
 *
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *   * Neither the name of Willow Garage, Inc. nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 *  ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 *
 */

#pragma once

#include <pcl/pcl_macros.h>

#include <vector>

namespace pcl {
class PCL_EXPORTS MaskMap {
public:
  MaskMap() = default;

  MaskMap(std::size_t width, std::size_t height);

  virtual ~MaskMap() = default;

  void
  resize(std::size_t width, std::size_t height);

  inline std::size_t
  getWidth() const
  {
    return (width_);
  }

  inline std::size_t
  getHeight() const
  {
    return (height_);
  }

  inline unsigned char*
  getData()
  {
    return (data_.data());
  }

  inline const unsigned char*
  getData() const
  {
    return (data_.data());
  }

  PCL_NODISCARD
  static MaskMap
  getDifferenceMask(const MaskMap& mask0, const MaskMap& mask1);

  inline void
  set(const std::size_t x, const std::size_t y)
  {
    data_[y * width_ + x] = 255;
  }

  inline void
  unset(const std::size_t x, const std::size_t y)
  {
    data_[y * width_ + x] = 0;
  }

  inline bool
  isSet(const std::size_t x, const std::size_t y) const
  {
    return (data_[y * width_ + x] != 0);
  }

  inline void
  reset()
  {
    data_.assign(data_.size(), 0);
  }

  inline unsigned char&
  operator()(const std::size_t x, const std::size_t y)
  {
    return (data_[y * width_ + x]);
  }

  inline const unsigned char&
  operator()(const std::size_t x, const std::size_t y) const
  {
    return (data_[y * width_ + x]);
  }

  void
  erode(MaskMap& eroded_mask) const;

private:
  std::vector<unsigned char> data_;
  std::size_t width_ = 0;
  std::size_t height_ = 0;
};

} // namespace pcl