Method SetExtent

Common/DataModel/vtkHyperTreeGrid.cxx:508–599

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

//------------------------------------------------------------------------------
void vtkHyperTreeGrid::SetExtent(const int extent[6])
{
  int description = vtkStructuredData::SetExtent(const_cast<int*>(extent), this->Extent);
  // why vtkStructuredData::SetExtent don't take const int* ?

  if (description < 0) // improperly specified
  {
    vtkErrorMacro(<< "Bad extent, retaining previous values");
    return;
  }

  this->Dimension = 0;
  this->Axis[0] = std::numeric_limits<unsigned int>::max();
  this->Axis[1] = std::numeric_limits<unsigned int>::max();
  for (unsigned int i = 0; i < 3; ++i)
  {
    this->Dimensions[i] = static_cast<unsigned int>(extent[2 * i + 1] - extent[2 * i] + 1);
    if (this->Dimensions[i] == 1)
    {
      this->CellDims[i] = 1;
    }
    else
    {
      this->CellDims[i] = this->Dimensions[i] - 1;
      if (this->Dimension == 2)
      {
        this->Axis[0] = std::numeric_limits<unsigned int>::max();
        this->Axis[1] = std::numeric_limits<unsigned int>::max();
      }
      else
      {
        this->Axis[this->Dimension] = i;
      }
      ++this->Dimension;
    }
  }

  assert("post: valid_axis" &&
    (this->Dimension != 3 ||
      (this->Axis[0] == std::numeric_limits<unsigned int>::max() &&
        this->Axis[1] == std::numeric_limits<unsigned int>::max())));
  assert("post: valid_axis" &&
    (this->Dimension != 2 ||
      (this->Axis[0] != std::numeric_limits<unsigned int>::max() &&
        this->Axis[1] != std::numeric_limits<unsigned int>::max())));
  assert("post: valid_axis" &&
    (this->Dimension != 1 ||
      (this->Axis[0] != std::numeric_limits<unsigned int>::max() &&
        this->Axis[1] == std::numeric_limits<unsigned int>::max())));

  switch (this->Dimension)
  {
    case 1:
      this->Orientation = this->Axis[0];
      break;
    case 2:
      this->Orientation = 0;
      for (unsigned int i = 0; i < 2; ++i)