SphinxExamples/src/Core/Common/ImageRegionIntersection/Code.cxx

/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  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 "itkImage.h"

int main(int, char*[])
{
  constexpr unsigned int Dimension = 2;
  using PixelType = unsigned char;

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

  // Big region
  ImageType::RegionType bigRegion;

  ImageType::SizeType bigSize;
  bigSize[0] = 100;
  bigSize[1] = 100;

  ImageType::IndexType bigStart;
  bigStart[0] = 0;
  bigStart[1] = 0;

  bigRegion.SetSize(bigSize);
  bigRegion.SetIndex(bigStart);

  // Small inside region
  ImageType::RegionType smallInsideRegion;

  ImageType::SizeType smallInsideSize;
  smallInsideSize[0] = 10;
  smallInsideSize[1] = 10;

  ImageType::IndexType smallInsideStart;
  smallInsideStart[0] = 50;
  smallInsideStart[1] = 50;

  smallInsideRegion.SetSize(smallInsideSize);
  smallInsideRegion.SetIndex(smallInsideStart);

  std::cout << "Small inside region is "
            << bigRegion.IsInside( smallInsideRegion ) << std::endl;

  // Small outside region
  ImageType::RegionType smallOutsideRegion;

  ImageType::SizeType smallOutsideSize;
  smallOutsideSize[0] = 10;
  smallOutsideSize[1] = 10;

  ImageType::IndexType smallOutsideStart;
  smallOutsideStart[0] = 110;
  smallOutsideStart[1] = 110;

  smallOutsideRegion.SetSize(smallOutsideSize);
  smallOutsideRegion.SetIndex(smallOutsideStart);

  std::cout << "Small outside region is "
            << bigRegion.IsInside( smallOutsideRegion ) << std::endl;

  // Small overlap region
  ImageType::RegionType smallOverlapRegion;

  ImageType::SizeType smallOverlapSize;
  smallOverlapSize[0] = 10;
  smallOverlapSize[1] = 10;

  ImageType::IndexType smallOverlapStart;
  smallOverlapStart[0] = 97;
  smallOverlapStart[1] = 97;

  smallOverlapRegion.SetSize(smallOverlapSize);
  smallOverlapRegion.SetIndex(smallOverlapStart);

  std::cout << "Small overlap region is "
            << bigRegion.IsInside( smallOverlapRegion ) << std::endl;

  return EXIT_SUCCESS;
}