Re: Template specialization for Boost.Polygon

From: Phil Endecott (spam_from_boost_users_at_[hidden])
Date: 2019-08-28 21:19:26

Patrick J. LoPresti wrote:
> "Phil Endecott" <spam_from_boost_users_at_[hidden]> writes:
>
>> Forgive me if I have misunderstood, but how can that cause
>> Boost.Polygon to see my specialisation when it looks up
>> polygon_traits<std::array<Point,3>> ?
>
> I had a similar problem.
>
> As it turns out, Boost.Polygon already uses a level of indirection
> internally. You can specialize boost_polygon_traits_general (instead of
> boost_polygon_traits).

THANKS!  Yes, that works.  It's a hack but I've done worse...

> This is undocumented, but it was the only way I found to get it working.
>
> I would argue this is a bug, or at least a deficiency. Not sure if the
> right fix is to change the documentation or the implementation.

It's clearly a misfeature.  Regarding fixing it, I have the impression
that Boost.Polygon is essentially abandoned.  Are you actively using it?
Anyone else out there?

Regards, Phil.