Method IsEdge

Common/DataModel/vtkEdgeTable.cxx:195–233

------------------------------------------------------------------------------ Return non-negative if edge (p1,p2) is an edge; otherwise -1.

//------------------------------------------------------------------------------
// Return non-negative if edge (p1,p2) is an edge; otherwise -1.
vtkIdType vtkEdgeTable::IsEdge(vtkIdType p1, vtkIdType p2)
{
  vtkIdType index, search;

  if (p1 < p2)
  {
    index = p1;
    search = p2;
  }
  else
  {
    index = p2;
    search = p1;
  }

  if (index > this->TableMaxId || this->Table[index] == nullptr)
  {
    return (-1);
  }
  else
  {
    vtkIdType loc;
    if ((loc = this->Table[index]->IsId(search)) == (-1))
    {
      return (-1);
    }
    else
    {
      if (this->StoreAttributes == 1)
      {
        return this->Attributes[index]->GetId(loc);
      }
      else
      {
        return 1;
      }
    }
  }
}

//------------------------------------------------------------------------------
// Return non-negative if edge (p1,p2) is an edge; otherwise -1.