Method GetNextEdge

Common/DataModel/vtkEdgeTable.cxx:423–444

Traverse list of edges in table. Return the edge as (p1,p2), where p1 and p2 are point id's. Method return value is <0 if the list is exhausted; otherwise a valid id >=0. The value of p1 is guaranteed to be <= p2. The return value is an id that can be used for accessing attributes.

// otherwise a valid id >=0. The value of p1 is guaranteed to be <= p2. The
// return value is an id that can be used for accessing attributes.
vtkIdType vtkEdgeTable::GetNextEdge(vtkIdType& p1, vtkIdType& p2)
{
  for (; this->Position[0] <= this->TableMaxId; this->Position[0]++, this->Position[1] = (-1))
  {
    if (this->Table[this->Position[0]] != nullptr &&
      ++this->Position[1] < this->Table[this->Position[0]]->GetNumberOfIds())
    {
      p1 = this->Position[0];
      p2 = this->Table[this->Position[0]]->GetId(this->Position[1]);
      if (this->StoreAttributes == 1)
      {
        return this->Attributes[this->Position[0]]->GetId(this->Position[1]);
      }
      else
      {
        return (-1);
      }
    }
  }

  return (-1);
}

//------------------------------------------------------------------------------
// Traverse list of edges in table. Return the edge as (p1,p2), where p1 and