Function TestGetNumNodesAndCells

Common/DataModel/Testing/Cxx/TestStructuredData.cxx:47–101

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

//------------------------------------------------------------------------------
int TestGetNumNodesAndCells()
{

#ifdef VTK_USE_64BIT_IDS
  constexpr int maxDim = 2047;
#else
  constexpr int maxDim = 511;
#endif

  // Extent for 2048^3 grid
  int ext[6] = { 0, maxDim, 0, maxDim, 0, maxDim };

  int dims[3];
  vtkStructuredData::GetDimensionsFromExtent(ext, dims);
  if ((dims[0] != maxDim + 1) || (dims[1] != maxDim + 1) || (dims[2] != maxDim + 1))
  {
    std::cerr << "Wrong dims computed: ";
    std::cerr << dims[0] << ", " << dims[1] << ", " << dims[2] << std::endl;
    return EXIT_FAILURE;
  }

  // Compute expected number of nodes. Note, we cast dims to vtkIdType to
  // ensure the compiler will generate a 32x32=64 multiply instruction.
  vtkIdType nNodesExpected = static_cast<vtkIdType>(dims[0]) * static_cast<vtkIdType>(dims[1]) *
    static_cast<vtkIdType>(dims[2]);

  if (vtkStructuredData::GetNumberOfPoints(ext) != nNodesExpected)
  {
    std::cerr << "ERROR: GetNumberOfNodes(ext) failed!\n";
    std::cerr << "val=" << vtkStructuredData::GetNumberOfPoints(ext) << "\n";
    std::cerr << "expected=" << nNodesExpected << "\n";
    return EXIT_FAILURE;
  }

  vtkStructuredData::GetCellDimensionsFromExtent(ext, dims);
  if ((dims[0] != maxDim) || (dims[1] != maxDim) || (dims[2] != maxDim))
  {
    std::cerr << "Wrong dims computed: ";
    std::cerr << dims[0] << ", " << dims[1] << ", " << dims[2] << std::endl;
    return EXIT_FAILURE;
  }
  // Compute expected number of nodes. Note, we cast dims to vtkIdType to
  // ensure the compiler will generate a 32x32=64 multiply instruction.
  vtkIdType nCellsExpected = static_cast<vtkIdType>(dims[0]) * static_cast<vtkIdType>(dims[1]) *
    static_cast<vtkIdType>(dims[2]);

  if (vtkStructuredData::GetNumberOfCells(ext) != nCellsExpected)
  {
    std::cerr << "ERROR: GetNumberOfNodes(ext) failed!\n";
    std::cerr << "val=" << vtkStructuredData::GetNumberOfCells(ext) << "\n";
    std::cerr << "expected=" << nCellsExpected << "\n";
    return EXIT_FAILURE;
  }
  return EXIT_SUCCESS;
}

//------------------------------------------------------------------------------
int TestGridExtent(int ext[6])