Translate One Mesh

Synopsis

translate one itk::Mesh

Results

Input image

Input Mesh (grey) and Output Mesh (yellow)

Code

C++

#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>;
  ReaderType::Pointer reader = ReaderType::New();
  reader->SetFileName(inputFileName);

  using TransformType = itk::TranslationTransform<MeshType::PointType::CoordRepType, Dimension>;
  TransformType::Pointer translation = TransformType::New();

  TransformType::OutputVectorType displacement;
  displacement.Fill(1.);

  translation->Translate(displacement);

  using FilterType = itk::TransformMeshFilter<MeshType, MeshType, TransformType>;
  FilterType::Pointer filter = FilterType::New();
  filter->SetInput(reader->GetOutput());
  filter->SetTransform(translation);

  using WriterType = itk::MeshFileWriter<MeshType>;
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName(outputFileName);
  writer->SetInput(filter->GetOutput());
  try
  {
    writer->Update();
  }
  catch (itk::ExceptionObject & error)
  {
    std::cerr << "Error: " << error << std::endl;
    return EXIT_FAILURE;
  }

  return EXIT_SUCCESS;
}

Classes demonstrated