/*=========================================================================
 *
 *  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 itkNeighborhoodIteratorTestCommon_hxx
#define itkNeighborhoodIteratorTestCommon_hxx

#include "itkImage.h"
#include "itkIndex.h"
#include "itkImageRegionIterator.h"
#include <iostream>

using TestImageType = itk::Image<itk::Index<4>, 4>;
using OffsetType = itk::Offset<4>;

extern void
println(const char * s);
extern TestImageType::Pointer
GetTestImage(int, int, int, int);


template <typename TIteratorType>
void
printnb(const TIteratorType & nb, bool full)
{
  unsigned long                         count = 1;
  const unsigned long                   sz = nb.GetRadius()[0] * 2 + 1;
  typename TIteratorType::ConstIterator it;
  if (full)
  {
    it = nb.Begin();

    while (it != nb.End())
    {
      std::cout << **it << ' ';
      if ((count % sz) == 0)
      {
        std::cout << std::endl;
      }
      ++it;
      ++count;
    }
  }
  else
  {
    std::cout << nb.GetCenterPixel() << std::endl;
  }
}

template <unsigned int VDimension>
void
FillImage(itk::Image<itk::Index<VDimension>, VDimension> * img)
{
  using IndexType = itk::Index<VDimension>;
  using ImageType = itk::Image<IndexType, VDimension>;
  const itk::Size<VDimension> size = img->GetRequestedRegion().GetSize();

  unsigned int i;
  IndexType    loop;
  loop.Fill(0);
  itk::ImageRegionIterator<ImageType> it(img, img->GetRequestedRegion());

  while (!it.IsAtEnd())
  {
    it.Value() = loop;
    for (i = 0; i < VDimension; ++i)
    {
      loop[i]++;
      if (static_cast<unsigned int>(loop[i]) == size[i])
      {
        loop[i] = 0;
      }
      else
      {
        break;
      }
    }
    ++it;
  }
}


#endif
