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Subject: Re: [geometry] a ring concept implementation of a true circle?
From: Barend Gehrels (barend_at_[hidden])
Date: 2012-08-28 16:49:28

On 28-8-2012 18:54, Mats Taraldsvik wrote:
> On 08/28/2012 03:47 PM, joe_at_[hidden] wrote:
>> Is there an easy way to model a true circle? By that I mean not a
>> polygon with a bunch of closely spaced points, but something you
>> construct with a point and a radius.
>> I guess not? All rings must consist of a list of points?
> It is not part of the simple geometry feature set, which, as far as I
> can see, is the only implemented data types thus far. However, the
> SQL-MM standard has a CIRCULARSTRING type (see
> It is currently missing(?) from Boost.Geometry (but might be in future
> plans? Barend?)

Yes, plans are there: as Bruno answered (2 minutes before your mail ;-)
) we started the nsphere geometry and concepts, but they are never
released, so still in extensions. See Bruno's mail.

Regards, Barend

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