text: /*=========================================================================
   *
   *  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
   *
   *         http://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 <iomanip>
  #include "itkImageFileReader.h"
  #include "itkImageFileWriter.h"
  #include "itkChangeInformationImageFilter.h"
  #include "itkCommand.h"
  #include "itkSimpleFilterWatcher.h"
  
  #include "itkParabolicErodeImageFilter.h"
  #include "itkTimeProbe.h"
  #include "itkMultiThreaderBase.h"
  
  // sanity check of the image spacing option
  
  int
  itkParaErodeTest(int argc, char * argv[])
  {
    itk::MultiThreaderBase::SetGlobalMaximumNumberOfThreads(1);
    constexpr int dim = 2;
  
    using PType = unsigned char;
    using IType = itk::Image<PType, dim>;
  
    float scale(1.0);
    if (argc > 4)
    {
      scale = std::stod(argv[4]);
    }
  
    using ReaderType = itk::ImageFileReader<IType>;
    ReaderType::Pointer reader = ReaderType::New();
    reader->SetFileName(argv[1]);
    try
    {
      reader->Update();
    }
    catch (itk::ExceptionObject & excp)
    {
      std::cerr << excp << std::endl;
      return EXIT_FAILURE;
    }
  
    using FilterType = itk::ParabolicErodeImageFilter<IType, IType>;
  
    FilterType::Pointer filter = FilterType::New();
  
    filter->SetInput(reader->GetOutput());
  
    filter->SetScale(scale);
    filter->SetUseImageSpacing(true);
    filter->SetParabolicAlgorithm(FilterType::INTERSECTION);
    try
    {
      filter->Update();
    }
    catch (itk::ExceptionObject & excp)
    {
      std::cerr << excp << std::endl;
      return EXIT_FAILURE;
    }
  
    using WriterType = itk::ImageFileWriter<IType>;
    WriterType::Pointer writer = WriterType::New();
    writer->SetInput(filter->GetOutput());
    writer->SetFileName(argv[2]);
    try
    {
      writer->Update();
    }
    catch (itk::ExceptionObject & excp)
    {
      std::cerr << excp << std::endl;
      return EXIT_FAILURE;
    }
  
    filter->SetScale(scale);
    filter->SetUseImageSpacing(true);
    filter->SetParabolicAlgorithm(FilterType::CONTACTPOINT);
    filter->Update();
  
    writer->SetInput(filter->GetOutput());
    writer->SetFileName(argv[3]);
    try
    {
      writer->Update();
    }
    catch (itk::ExceptionObject & excp)
    {
      std::cerr << excp << std::endl;
      return EXIT_FAILURE;
    }
  
    return EXIT_SUCCESS;
  }
  