Method SetArray

Common/DataModel/vtkFieldData.cxx:425–482

------------------------------------------------------------------------------ Set an array to define the field.

//------------------------------------------------------------------------------
// Set an array to define the field.
void vtkFieldData::SetArray(int i, vtkAbstractArray* data)
{
  if (!data || (i > this->NumberOfActiveArrays))
  {
    vtkWarningMacro("Can not set array " << i << " to " << data << endl);
    return;
  }

  if (i < 0)
  {
    vtkWarningMacro("Array index should be >= 0");
    return;
  }
  else if (i >= this->NumberOfArrays)
  {
    this->AllocateArrays(i + 1);
    this->NumberOfActiveArrays = i + 1;
  }

  const char* name = data->GetName();
  if (name && strcmp(name, vtkFieldData::GhostArrayName()) == 0)
  {
    this->GhostArray = vtkArrayDownCast<vtkUnsignedCharArray>(data);
  }

  if (this->Data[i] != data)
  {
    if (this->Data[i] != nullptr)
    {
      this->Data[i]->UnRegister(this);
    }
    this->Data[i] = data;
    if (this->Data[i] != nullptr)
    {
      // range[0] -> cached range for comp == -1
      // range[1] -> cached range for comp in [0, number of components - 1]
      // std::get<0> -> cached array MTime
      // std::get<1> -> cached ghost array MTime
      // std::get<2> -> cached range buffer
      auto& finiteRange = this->FiniteRanges[i];
      std::get<0>(finiteRange[0]) = 0;
      std::get<1>(finiteRange[0]) = 0;
      std::get<2>(finiteRange[0]).resize(2);
      std::get<0>(finiteRange[1]) = 0;
      std::get<1>(finiteRange[1]) = 0;
      std::get<2>(finiteRange[1]).resize(2 * data->GetNumberOfComponents());
      auto& range = this->Ranges[i];
      std::get<0>(range[0]) = 0;
      std::get<1>(range[0]) = 0;
      std::get<2>(range[0]).resize(2);
      std::get<0>(range[1]) = 0;
      std::get<1>(range[1]) = 0;
      std::get<2>(range[1]).resize(2 * data->GetNumberOfComponents());
      this->Data[i]->Register(this);
    }
    this->Modified();
  }
}