Method GetPolygonalGridCells

IO/Geometry/vtkTecplotReader.cxx:1256–1325

}

void vtkTecplotReader::GetPolygonalGridCells(
  int numFaces, int numEdges, vtkUnstructuredGrid* unstruct) const
{
  std::vector<std::pair<vtkIdType, vtkIdType>> edges;

  for (int i = 0; i < numEdges; ++i)
  {
    auto tok1 = this->Internal->GetNextToken();
    while (tok1.empty())
    {
      tok1 = this->Internal->GetNextToken();
    }
    auto tok2 = this->Internal->GetNextToken();
    while (tok2.empty())
    {
      tok2 = this->Internal->GetNextToken();
    }

    vtkIdType e1, e2;
    VTK_FROM_CHARS_IF_ERROR_RETURN(tok1, e1, );
    VTK_FROM_CHARS_IF_ERROR_RETURN(tok2, e2, );
    edges.emplace_back(e1 - 1, e2 - 1); // convert from FORTRAN to C-indexing
  }

  std::map<vtkIdType, std::vector<vtkIdType>> faceEdges;

  for (int i = 0; i < numEdges; ++i)
  {
    auto tok = this->Internal->GetNextToken();
    while (tok.empty())
    {
      tok = this->Internal->GetNextToken();
    }

    vtkIdType leftElement;
    VTK_FROM_CHARS_IF_ERROR_RETURN(tok, leftElement, );
    if (leftElement > 0)
    {
      faceEdges[leftElement - 1].push_back(i);
    }
  }

  for (int i = 0; i < numEdges; ++i)
  {
    auto tok = this->Internal->GetNextToken();
    while (tok.empty())
    {
      tok = this->Internal->GetNextToken();
    }

    vtkIdType rightElement;
    VTK_FROM_CHARS_IF_ERROR_RETURN(tok, rightElement, );
    if (rightElement > 0)
    {
      faceEdges[rightElement - 1].push_back(i);
    }
  }