/*=========================================================================
 *
 *  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.
 *
 *=========================================================================*/

#include "itkGrayscaleFunctionDilateImageFilter.h"
#include "itkBinaryBallStructuringElement.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkImage.h"

int
main(int argc, char * argv[])
{
  if (argc < 3)
  {
    std::cerr << "Usage: " << std::endl;
    std::cerr << argv[0] << "  inputImageFile   outputImageFile" << std::endl;
    return EXIT_FAILURE;
  }

  constexpr unsigned int Dimension = 2;
  using PixelType = unsigned char;

  using ImageType = itk::Image<PixelType, Dimension>;

  using ReaderType = itk::ImageFileReader<ImageType>;
  using WriterType = itk::ImageFileWriter<ImageType>;

  auto reader = ReaderType::New();
  auto writer = WriterType::New();

  reader->SetFileName(argv[1]);
  writer->SetFileName(argv[2]);


  using KernelType = itk::BinaryBallStructuringElement<PixelType, Dimension>;

  using FilterType =
    itk::GrayscaleFunctionDilateImageFilter<ImageType, ImageType, KernelType>;

  auto filter = FilterType::New();

  KernelType           ball;
  KernelType::SizeType ballSize;
  ballSize[0] = 1;
  ballSize[1] = 4;
  ball.SetRadius(ballSize);
  ball.CreateStructuringElement();

  filter->SetKernel(ball);

  filter->SetInput(reader->GetOutput());
  writer->SetInput(filter->GetOutput());

  try
  {
    writer->Update();
  }
  catch (const itk::ExceptionObject & excp)
  {
    std::cerr << excp << std::endl;
    return EXIT_FAILURE;
  }

  return EXIT_SUCCESS;
}
