Method GetUnstructuredGridCells

IO/Geometry/vtkTecplotReader.cxx:1328–1429

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

//------------------------------------------------------------------------------
void vtkTecplotReader::GetUnstructuredGridCells(
  int numberCells, const char* cellTypeStr, vtkUnstructuredGrid* unstrctGrid)
{
  if (!cellTypeStr || !unstrctGrid)
  {
    vtkErrorMacro(<< "Cell type (connectivity type) unspecified or nullptr "
                  << "vtkUnstructuredGrid object.");
    return;
  }

  // determine the number of points per cell and the cell type
  int numCellPnts = -1;
  int theCellType = -1;

  if (strcmp(cellTypeStr, "BRICK") == 0)
  {
    numCellPnts = 8;
    theCellType = VTK_HEXAHEDRON;
    this->Internal->TopologyDim = vtkMath::Max(this->Internal->TopologyDim, 3);
  }
  else if (strcmp(cellTypeStr, "TRIANGLE") == 0)
  {
    numCellPnts = 3;
    theCellType = VTK_TRIANGLE;
    this->Internal->TopologyDim = vtkMath::Max(this->Internal->TopologyDim, 2);
  }
  else if (strcmp(cellTypeStr, "QUADRILATERAL") == 0)
  {
    numCellPnts = 4;
    theCellType = VTK_QUAD;
    this->Internal->TopologyDim = vtkMath::Max(this->Internal->TopologyDim, 2);
  }
  else if (strcmp(cellTypeStr, "TETRAHEDRON") == 0)
  {
    numCellPnts = 4;
    theCellType = VTK_TETRA;
    this->Internal->TopologyDim = vtkMath::Max(this->Internal->TopologyDim, 3);
  }
  else if (strcmp(cellTypeStr, "POINT") == 0 || strcmp(cellTypeStr, "") == 0)
  {
    numCellPnts = 1;
    theCellType = VTK_VERTEX;
    this->Internal->TopologyDim = vtkMath::Max(this->Internal->TopologyDim, 0);
  }
  else
  {
    vtkErrorMacro(<< this->FileName << ": Unknown cell type for a zone.");
    return;
  }

  // the storage of each cell begins with the number of points per cell,
  // followed by a list of point ids representing the cell
  vtkIdTypeArray* cellInfoList = vtkIdTypeArray::New();
  cellInfoList->SetNumberOfValues((numCellPnts + 1) * numberCells);
  vtkIdType* cellInforPtr = cellInfoList->GetPointer(0);

  // type of each cell
  vtkUnsignedCharArray* cellTypeList = vtkUnsignedCharArray::New();