Method ReadMeshSimple

IO/Legacy/vtkTreeReader.cxx:48–199

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

//------------------------------------------------------------------------------
int vtkTreeReader::ReadMeshSimple(const std::string& fname, vtkDataObject* doOutput)
{
  vtkDebugMacro(<< "Reading vtk tree ...");

  if (!this->OpenVTKFile(fname.c_str()) || !this->ReadHeader())
  {
    return 1;
  }

  // Read table-specific stuff
  char line[256];
  if (!this->ReadString(line))
  {
    vtkErrorMacro(<< "Data file ends prematurely!");
    this->CloseVTKFile();
    return 1;
  }

  if (strncmp(this->LowerCase(line), "dataset", 7) != 0)
  {
    vtkErrorMacro(<< "Unrecognized keyword: " << line);
    this->CloseVTKFile();
    return 1;
  }

  if (!this->ReadString(line))
  {
    vtkErrorMacro(<< "Data file ends prematurely!");
    this->CloseVTKFile();
    return 1;
  }

  if (strncmp(this->LowerCase(line), "tree", 4) != 0)
  {
    vtkErrorMacro(<< "Cannot read dataset type: " << line);
    this->CloseVTKFile();
    return 1;
  }

  vtkTree* const output = vtkTree::SafeDownCast(doOutput);

  vtkSmartPointer<vtkMutableDirectedGraph> builder =
    vtkSmartPointer<vtkMutableDirectedGraph>::New();

  while (true)
  {
    if (!this->ReadString(line))
    {
      break;
    }

    if (!strncmp(this->LowerCase(line), "field", 5))
    {
      vtkFieldData* const field_data = this->ReadFieldData();
      builder->SetFieldData(field_data);
      field_data->Delete();
      continue;
    }