Method MoveRowData

Common/DataModel/vtkTable.cxx:232–288

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

//------------------------------------------------------------------------------
void vtkTable::MoveRowData(vtkIdType first, vtkIdType last, vtkIdType delta)
{
  if ((first < 0) || (last < 0) || (first > last) || (delta == 0))
  {
    return;
  }

  // determine the move direction
  // if delta is positive then we need to start at the back of the source segment
  // and work forwards, else at the beginning of the source segment and backwards
  vtkIdType start = first;
  vtkIdType stop = last;
  vtkIdType step = +1;
  if (delta > 0)
  {
    start = last;
    stop = first;
    step = -1;
  }

  vtkIdType ncol = this->GetNumberOfColumns();
  for (vtkIdType i = 0; i < ncol; i++)
  {
    vtkAbstractArray* arr = this->GetColumn(i);
    int comps = arr->GetNumberOfComponents();
    if (vtkArrayDownCast<vtkDataArray>(arr))
    {
      vtkDataArray* data = vtkArrayDownCast<vtkDataArray>(arr);
      for (vtkIdType row = start; row * step <= stop * step; row += step)
      {
        data->SetTuple(row + delta, row, data);
      }
    }
    else if (vtkArrayDownCast<vtkStringArray>(arr))
    {
      vtkStringArray* data = vtkArrayDownCast<vtkStringArray>(arr);
      for (vtkIdType row = start; row * step <= stop * step; row += step)
      {
        for (int j = 0; j < comps; j++)
        {
          data->SetValue((row + delta) * comps + j, data->GetValue(row * comps + j));
        }
      }
    }
    else if (vtkArrayDownCast<vtkVariantArray>(arr))
    {
      vtkVariantArray* data = vtkArrayDownCast<vtkVariantArray>(arr);
      for (vtkIdType row = start; row * step <= stop * step; row += step)
      {
        for (int j = 0; j < comps; j++)
        {
          data->SetValue((row + delta) * comps + j, data->GetValue(row * comps + j));
        }
      }
    }
  }
}