Method GetLagrangePCoords

Filters/General/vtkFiniteElementFieldDistributor.cxx:1374–1412

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std::vector<double> vtkFiniteElementFieldDistributor::vtkInternals::GetLagrangePCoords(
  VTKCellType cellType, vtkIdType npts)
{
  vtkCell* cell = nullptr;
  switch (cellType)
  {
    case VTK_HEXAHEDRON:
      this->lagrangeHex->SetUniformOrderFromNumPoints(npts);
      cell = this->lagrangeHex;
      break;
    case VTK_QUAD:
      this->lagrangeQuad->SetUniformOrderFromNumPoints(npts);
      cell = this->lagrangeQuad;
      break;
    case VTK_TETRA:
      cell = this->lagrangeTet;
      break;
    case VTK_TRIANGLE:
      cell = this->lagrangeTri;
      break;
    case VTK_WEDGE:
      cell = this->lagrangeWedge;
      break;
    default:
      break;
  }
  if (cell != nullptr)
  {
    cell->PointIds->SetNumberOfIds(npts);
    cell->Points->SetNumberOfPoints(npts);
    cell->Initialize();
    double* pCoords = cell->GetParametricCoords();
    return std::vector<double>(pCoords, pCoords + npts * 3);
  }
  else
  {
    return {};
  }
}

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void vtkFiniteElementFieldDistributor::vtkInternals::ExplodeCell(vtkIdType cellId,