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 "itkBlackTopHatImageFilter.h"
  #include "itkWhiteTopHatImageFilter.h"
  #include "itkMathematicalMorphologyEnums.h"
  #include "itkBinaryBallStructuringElement.h"
  #include "itkSimpleFilterWatcher.h"
  #include "itkImageFileReader.h"
  #include "itkImageFileWriter.h"
  #include "itkTestingMacros.h"
  
  
  template <typename TKernelImageFilter>
  int
  itkTopHatImageFilterTestHelper(TKernelImageFilter *                              filter,
                                 typename TKernelImageFilter::KernelType           ball,
                                 const bool                                        safeBorder,
                                 const itk::MathematicalMorphologyEnums::Algorithm algorithm,
                                 const bool                                        forceAlgorithm,
                                 const char *                                      inputFileName,
                                 const char *                                      outputFileName)
  {
    // Declare the reader and writer
    using ReaderType = itk::ImageFileReader<typename TKernelImageFilter::InputImageType>;
    typename ReaderType::Pointer reader = ReaderType::New();
    reader->SetFileName(inputFileName);
  
    itk::SimpleFilterWatcher watcher(filter, "filter");
  
    ITK_TEST_SET_GET_BOOLEAN(filter, SafeBorder, safeBorder);
  
    filter->SetAlgorithm(algorithm);
    ITK_TEST_SET_GET_VALUE(algorithm, filter->GetAlgorithm());
  
    ITK_TEST_SET_GET_BOOLEAN(filter, ForceAlgorithm, forceAlgorithm);
  
    // Connect the structuring element
    filter->SetKernel(ball);
  
    // Connect the pipeline
    filter->SetInput(reader->GetOutput());
  
    ITK_TRY_EXPECT_NO_EXCEPTION(filter->Update());
  
  
    // Write output
    using WriterType = itk::ImageFileWriter<typename TKernelImageFilter::OutputImageType>;
    typename WriterType::Pointer writer = WriterType::New();
    writer->SetFileName(outputFileName);
    writer->SetInput(filter->GetOutput());
  
    ITK_TRY_EXPECT_NO_EXCEPTION(writer->Update());
  
  
    std::cout << "Test finished" << std::endl;
    return EXIT_SUCCESS;
  }
  
  
  int
  itkTopHatImageFilterTest(int argc, char * argv[])
  {
    if (argc != 8)
    {
      std::cerr << "Missing arguments." << std::endl;
      std::cerr << "Usage: " << std::endl;
      std::cerr << itkNameOfTestExecutableMacro(argv) << " inputImage"
                << " outputImage"
                << " 0/1(Black/White)"
                << " radius"
                << " safeBorder"
                << " algorithm"
                << " forceAlgorithm" << std::endl;
      return EXIT_FAILURE;
    }
  
    // Define the dimension of the images
    constexpr unsigned int Dimension = 2;
  
    // Define the pixel type
    using PixelType = unsigned char;
  
    // Declare the types of the images
    using ImageType = itk::Image<PixelType, Dimension>;
  
    // Declare the type for the structuring element
    using KernelType = itk::BinaryBallStructuringElement<PixelType, Dimension>;
  
    const char * inputFileName = argv[1];
    const char * outputFileName = argv[2];
  
    // Create the structuring element
    KernelType           ball;
    KernelType::SizeType ballSize;
    ballSize[0] = std::stoi(argv[4]);
    ballSize[1] = std::stoi(argv[4]);
    ball.SetRadius(ballSize);
    ball.CreateStructuringElement();
  
    auto                                        safeBorder = static_cast<bool>(std::stoi(argv[5]));
    itk::MathematicalMorphologyEnums::Algorithm algorithm;
    auto                                        forceAlgorithm = static_cast<bool>(std::stoi(argv[7]));
  
    switch (std::stoi(argv[3]))
    {
      case 0:
      {
        // Create the filter
        using BlackFilterType = itk::BlackTopHatImageFilter<ImageType, ImageType, KernelType>;
        BlackFilterType::Pointer filter = BlackFilterType::New();
  
        ITK_EXERCISE_BASIC_OBJECT_METHODS(filter, BlackTopHatImageFilter, KernelImageFilter);
  
  
        algorithm = static_cast<BlackFilterType::AlgorithmEnum>(std::stoi(argv[6]));
        return itkTopHatImageFilterTestHelper<BlackFilterType>(
          filter, ball, safeBorder, algorithm, forceAlgorithm, inputFileName, outputFileName);
  
        break;
      }
      case 1:
      {
        // Create the filter
        using WhiteFilterType = itk::WhiteTopHatImageFilter<ImageType, ImageType, KernelType>;
        WhiteFilterType::Pointer filter = WhiteFilterType::New();
  
        ITK_EXERCISE_BASIC_OBJECT_METHODS(filter, WhiteTopHatImageFilter, KernelImageFilter);
  
  
        algorithm = static_cast<WhiteFilterType::AlgorithmEnum>(std::stoi(argv[6]));
        return itkTopHatImageFilterTestHelper<WhiteFilterType>(
          filter, ball, safeBorder, algorithm, forceAlgorithm, inputFileName, outputFileName);
  
        break;
      }
      default:
        std::cerr << "Test failed!" << std::endl;
        std::cerr << "Invalid filter selector: " << std::stoi(argv[3]) << std::endl;
        return EXIT_FAILURE;
    }
  }
  