Method ReadMeshSimple

IO/Legacy/vtkStructuredGridReader.cxx:139–366

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//------------------------------------------------------------------------------
int vtkStructuredGridReader::ReadMeshSimple(const std::string& fname, vtkDataObject* doOutput)
{
  vtkIdType numPts = 0, npts = 0, numCells = 0, ncells;
  char line[256];
  int dimsRead = 0;
  vtkStructuredGrid* output = vtkStructuredGrid::SafeDownCast(doOutput);

  vtkDebugMacro(<< "Reading vtk structured grid file...");

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

  // Read structured grid specific stuff
  //
  if (!this->ReadString(line))
  {
    vtkErrorMacro(<< "Data file ends prematurely!");
    this->CloseVTKFile();
    return 1;
  }

  if (!strncmp(this->LowerCase(line), "dataset", 7))
  {
    // Make sure we're reading right type of geometry
    //
    if (!this->ReadString(line))
    {
      vtkErrorMacro(<< "Data file ends prematurely!");
      this->CloseVTKFile();
      return 1;
    }

    if (strncmp(this->LowerCase(line), "structured_grid", 15) != 0)
    {
      vtkErrorMacro(<< "Cannot read dataset type: " << line);
      this->CloseVTKFile();
      return 1;
    }

    // Read keyword and number of points
    //
    while (true)
    {
      if (!this->ReadString(line))
      {
        break;
      }

      if (!strncmp(this->LowerCase(line), "field", 5))
      {
        vtkFieldData* fd = this->ReadFieldData();
        output->SetFieldData(fd);
        fd->Delete(); // ?
      }

      else if (!strncmp(line, "extent", 6) && !dimsRead)