How to store instances of external class via pointer in 2d geometries
I have objects which are represented via
CGAL::Arr_segment_traits_2<kernel>::Curve_2 and later other 2D geometries. I
use arrengements with history to find intersections between these objects
but in order to do that I would need to store a pointer to the instances in
these 2d geometries.
I'm not quite sure what cgal object I need to inherit from and what other
changes I need to do.