Method ReadGrid

IO/XML/vtkXMLHyperTreeGridReader.cxx:420–479

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//------------------------------------------------------------------------------
void vtkXMLHyperTreeGridReader::ReadGrid(vtkXMLDataElement* elem)
{
  vtkHyperTreeGrid* output = vtkHyperTreeGrid::SafeDownCast(this->GetCurrentOutput());

  // Read the coordinates arrays
  vtkXMLDataElement* xc =
    elem->FindNestedElementWithNameAndAttribute("DataArray", "Name", "XCoordinates");
  vtkXMLDataElement* yc =
    elem->FindNestedElementWithNameAndAttribute("DataArray", "Name", "YCoordinates");
  vtkXMLDataElement* zc =
    elem->FindNestedElementWithNameAndAttribute("DataArray", "Name", "ZCoordinates");

  vtkAbstractArray* xa = this->CreateArray(xc);
  vtkAbstractArray* ya = this->CreateArray(yc);
  vtkAbstractArray* za = this->CreateArray(zc);

  auto x = vtkArrayDownCast<vtkDataArray>(xa);
  auto y = vtkArrayDownCast<vtkDataArray>(ya);
  auto z = vtkArrayDownCast<vtkDataArray>(za);

  vtkIdType numX, numY, numZ;
  xc->GetScalarAttribute("NumberOfTuples", numX);
  yc->GetScalarAttribute("NumberOfTuples", numY);
  zc->GetScalarAttribute("NumberOfTuples", numZ);

  if (x && y && z)
  {
    x->SetNumberOfTuples(numX);
    y->SetNumberOfTuples(numY);
    z->SetNumberOfTuples(numZ);

    this->ReadArrayValues(xc, 0, x, 0, numX);
    this->ReadArrayValues(yc, 0, y, 0, numY);
    this->ReadArrayValues(zc, 0, z, 0, numZ);

    output->SetXCoordinates(x);
    output->SetYCoordinates(y);
    output->SetZCoordinates(z);

    x->Delete();
    y->Delete();
    z->Delete();
  }
  else
  {
    if (xa)
    {
      xa->Delete();
    }
    if (ya)
    {
      ya->Delete();
    }
    if (za)
    {
      za->Delete();
    }
    this->DataError = 1;