Method BuildOutputGrid

IO/Geometry/vtkChacoReader.cxx:206–336

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
int vtkChacoReader::BuildOutputGrid(vtkUnstructuredGrid* output)
{
  int i = 0;
  if (this->OpenCurrentFile() != 1)
  {
    vtkWarningMacro(<< "Can't open file");
    return 0;
  }

  int ncells = this->DataCache->GetNumberOfCells();
  int haveVertexWeightArrays = 0;
  int haveEdgeWeightArrays = 0;

  if (ncells && (this->NumberOfVertexWeights > 0))
  {
    vtkDoubleArray* da = vtkArrayDownCast<vtkDoubleArray>(
      this->DataCache->GetPointData()->GetArray(this->VarrayName[0].c_str()));

    haveVertexWeightArrays = (da != nullptr);
  }

  if (ncells && (this->NumberOfEdgeWeights > 0))
  {
    vtkDoubleArray* da = vtkArrayDownCast<vtkDoubleArray>(
      this->DataCache->GetCellData()->GetArray(this->EarrayName[0].c_str()));

    haveEdgeWeightArrays = (da != nullptr);
  }

  if (!this->RemakeDataCacheFlag &&
    ((!haveVertexWeightArrays && this->GenerateVertexWeightArrays) ||
      (!haveEdgeWeightArrays && this->GenerateEdgeWeightArrays)))
  {
    this->RemakeDataCacheFlag = 1;
  }

  if (this->RemakeDataCacheFlag)
  {
    output->Initialize();
    int rc = this->ReadFile(output);

    if (rc == 0)
    {
      this->CloseCurrentFile();
      return 0;
    }

    if (this->GenerateGlobalElementIdArray)
    {
      this->AddElementIds(output);
    }

    if (this->GenerateGlobalNodeIdArray)
    {
      this->AddNodeIds(output);
    }

    // Save the output.  Next time we execute, it may be simply