CGAL users discussion list

[Marc Glisse <>]

On Fri, 26 Feb 2016, Frédérik Paradis wrote:

> > Try harder? That is the most natural way in CGAL. If you have trouble with
> > it, maybe you can ask here with specific code. Maybe there is a real
> > obstruction that prevents from using this solution here, but you would
> > likely be asked to explain it before integrating code that uses a different
> > strategy.
>
> Actually, my problem is that the constructor of Sphere_d is not the same as
> constructing a Circle_2. Sphere_d takes an iterator of Point_d whereas
> Point_2 only takes three points or a center with a radius. Do you know how
> I could work around that?

Your traits class would not only provide the type Sphere_d, it would also 
provide a functor Construct_sphere_d. In the adaptor for Kernel_d, that is 
already provided. In the adaptor for Kernel_2, you would need to implement 
the functor so it reads the first 3 values of the iterator and calls 
Construct_circle_2 on those.

--
Marc Glisse