CGAL users discussion list

["Brown, James 2" <>]

When using the triangulation I need to map from a Cell to an external data structure, so I am trying to find the correct way to persistently reference a cell.

 

It seems the way to reference cells should be with a Cell_handle, but it looks like this is actually a Cell_iterator. I would like to perform an incremental triangulation but the documentation notes that the iterators become invalid for any change to the triangulation. This makes it sound like I cannot use a Cell_handle to persistently reference a cell during an incremental triangulation.

 

After some experimentation it seems (assuming the cell has not been removed by a point insertion or vertex deletion) that I can still correctly reference a cell through its Cell_handle after a change to the triangulation. Is this just a fluke or is it a safe operation, and what is the best way if any to accomplish what I need?

 

Thanks,

James