/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkBinaryThresholdImageFunction_hxx
#define itkBinaryThresholdImageFunction_hxx

#include "itkMath.h"

namespace itk
{
template <typename TInputImage, typename TCoordinate>
BinaryThresholdImageFunction<TInputImage, TCoordinate>::BinaryThresholdImageFunction()
  : m_Lower(NumericTraits<PixelType>::NonpositiveMin())
  , m_Upper(NumericTraits<PixelType>::max())
{}

/**
 * Values greater than or equal to the value are inside
 */
template <typename TInputImage, typename TCoordinate>
void
BinaryThresholdImageFunction<TInputImage, TCoordinate>::ThresholdAbove(PixelType thresh)
{
  if (Math::NotExactlyEquals(m_Lower, thresh) || Math::NotExactlyEquals(m_Upper, NumericTraits<PixelType>::max()))
  {
    m_Lower = thresh;
    m_Upper = NumericTraits<PixelType>::max();
    this->Modified();
  }
}

/**
 * The values less than or equal to the value are inside
 */
template <typename TInputImage, typename TCoordinate>
void
BinaryThresholdImageFunction<TInputImage, TCoordinate>::ThresholdBelow(PixelType thresh)
{
  if (Math::NotExactlyEquals(m_Lower, NumericTraits<PixelType>::NonpositiveMin()) ||
      Math::NotExactlyEquals(m_Upper, thresh))
  {
    m_Lower = NumericTraits<PixelType>::NonpositiveMin();
    m_Upper = thresh;
    this->Modified();
  }
}

/**
 * The values less than or equal to the value are inside
 */
template <typename TInputImage, typename TCoordinate>
void
BinaryThresholdImageFunction<TInputImage, TCoordinate>::ThresholdBetween(PixelType lower, PixelType upper)
{
  if (Math::NotExactlyEquals(m_Lower, lower) || Math::NotExactlyEquals(m_Upper, upper))
  {
    m_Lower = lower;
    m_Upper = upper;
    this->Modified();
  }
}

template <typename TInputImage, typename TCoordinate>
void
BinaryThresholdImageFunction<TInputImage, TCoordinate>::PrintSelf(std::ostream & os, Indent indent) const
{
  Superclass::PrintSelf(os, indent);

  os << indent << "Lower: " << m_Lower << std::endl;
  os << indent << "Upper: " << m_Upper << std::endl;
}
} // end namespace itk

#endif
