Method GetEdgeOwner

Common/DataModel/vtkDistributedGraphHelper.cxx:91–115

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//------------------------------------------------------------------------------
vtkIdType vtkDistributedGraphHelper::GetEdgeOwner(vtkIdType e_id) const
{
  vtkIdType owner = e_id;
  int numProcs = this->Graph->GetInformation()->Get(vtkDataObject::DATA_NUMBER_OF_PIECES());

  if (numProcs > 1)
  {
    if (e_id & this->signBitMask)
    {
      owner ^= this->signBitMask;               // remove sign bit
      vtkIdType tmp = owner >> this->indexBits; // so can right-shift
      owner = tmp | this->highBitShiftMask;     // and append sign bit back
    }
    else
    {
      owner = e_id >> this->indexBits;
    }
  }
  else // numProcs = 1
  {
    owner = 0;
  }

  return owner;
}

//------------------------------------------------------------------------------
vtkIdType vtkDistributedGraphHelper::GetEdgeIndex(vtkIdType e_id) const