SphinxExamples/src/Core/Mesh/TranslateOneMesh/Code.cxx

/*=========================================================================
 *
 *  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 "itkMesh.h"
#include "itkMeshFileReader.h"
#include "itkMeshFileWriter.h"
#include "itkTranslationTransform.h"
#include "itkTransformMeshFilter.h"
 
int
main(int argc, char * argv[])
{
  if (argc != 3)
  {
    std::cerr << "Usage: " << std::endl;
    std::cerr << argv[0];
    std::cerr << " <InputFileName> <OutputFileName>";
    std::cerr << std::endl;
    return EXIT_FAILURE;
  }
 
  const char * inputFileName = argv[1];
  const char * outputFileName = argv[2];
 
  constexpr unsigned int Dimension = 3;
 
  using PixelType = double;
  using MeshType = itk::Mesh<PixelType, Dimension>;
 
  using ReaderType = itk::MeshFileReader<MeshType>;
  auto reader = ReaderType::New();
  reader->SetFileName(inputFileName);
 
  using TransformType = itk::TranslationTransform<MeshType::PointType::CoordRepType, Dimension>;
  auto translation = TransformType::New();
 
  TransformType::OutputVectorType displacement;
  displacement.Fill(1.);
 
  translation->Translate(displacement);
 
  using FilterType = itk::TransformMeshFilter<MeshType, MeshType, TransformType>;
  auto filter = FilterType::New();
  filter->SetInput(reader->GetOutput());
  filter->SetTransform(translation);
 
  using WriterType = itk::MeshFileWriter<MeshType>;
  auto writer = WriterType::New();
  writer->SetFileName(outputFileName);
  writer->SetInput(filter->GetOutput());
  try
  {
    writer->Update();
  }
  catch (const itk::ExceptionObject & error)
  {
    std::cerr << "Error: " << error << std::endl;
    return EXIT_FAILURE;
  }
 
  return EXIT_SUCCESS;
}