CGAL users discussion list

[Andreas Fabri <>]

That could be unified.  Progress never stops.

best,

andreas

On 26/02/2016 21:07, Frédérik Paradis wrote:
> Sorry for my mistakes and yet I reread it before sending. It should have
> been:
>
>     whereas Circle_2 only takes three points or a center with a radius
>
>
> 2016-02-26 15:02 GMT-05:00 Frédérik Paradis 
> <
> <mailto:>>:
>
>         The code you showed has:
>         (distance_vw - 2.*max_rad) > s*max_rad
>         which I can rewrite:
>         distance_vw > (s+2)*max_rad
>         and I can square both sides.
>
>         Sure, in some cases removing the square roots can be harder, but
>         it is doable.
>
>
>     Alright, I see thank you.
>
>         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?
>
>     Thank you.
>
>     Frédérik

--
Andreas Fabri, PhD
Chief Officer, GeometryFactory
Editor, The CGAL Project

phone: +33.492.954.912    skype: andreas.fabri