Method VTKToXdmfArray

IO/Xdmf3/vtkXdmf3DataSet.cxx:205–346

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//------------------------------------------------------------------------------
bool vtkXdmf3DataSet::VTKToXdmfArray(
  vtkDataArray* vArray, XdmfArray* xArray, unsigned int rank, unsigned int* dims)
{
  std::vector<unsigned int> xdims;
  if (rank == 0)
  {
    xdims.push_back(vArray->GetNumberOfTuples());
  }
  else
  {
    for (unsigned int i = 0; i < rank; i++)
    {
      xdims.push_back(dims[i]);
    }
  }
  // add additional dimension to the xdmf array to match the vtk array's width,
  // ex coordinate arrays have xyz, so add [3]
  unsigned int ncomp = static_cast<unsigned int>(vArray->GetNumberOfComponents());
  if (ncomp != 1)
  {
    xdims.push_back(ncomp);
  }

  if (vArray->GetName())
  {
    xArray->setName(vArray->GetName());
  }

  auto aos = vArray->ToAOSDataArray();
#define DO_DEEPWRITE 1
#if DO_DEEPWRITE
#define XDMF_ARRAY_COPY(type, nativeType, xdmfarr, vtkarr)                                         \
  xdmfarr->insert(0,                                                                               \
    reinterpret_cast<type*>(                                                                       \
      vtkAOSDataArrayTemplate<nativeType>::FastDownCast(vtkarr)->GetPointer(0)),                   \
    vtkarr->GetDataSize())
#else
#define XDMF_ARRAY_COPY(type, xdmfarr, vtkarr)                                                     \
  xdmfarr->setValuesInternal(vtkAOSDataArrayTemplate<type>::FastDownCast(vtkarr)->GetPointer(0),   \
    vtkarr->GetDataSize(), false)
#endif

  // TODO: verify the 32/64 choices are correct in all configurations
  switch (vArray->GetDataType())
  {
    case VTK_VOID:
      return false;
    case VTK_BIT:
      return false;
    case VTK_CHAR:
      xArray->initialize(XdmfArrayType::Int8(), xdims);
      XDMF_ARRAY_COPY(char, char, xArray, aos);
      break;
    case VTK_SIGNED_CHAR:
      xArray->initialize(XdmfArrayType::Int8(), xdims);
      XDMF_ARRAY_COPY(char, signed char, xArray, aos);
      break;
    case VTK_UNSIGNED_CHAR: