Geometry Boost List: Re: [geometry] Register CCW Polygon

Subject: Re: [geometry] Register CCW Polygon
From: Mateusz Loskot (mateusz_at_[hidden])
Date: 2013-10-24 16:56:09

On 23 October 2013 18:36, Andrew Hundt <athundt_at_[hidden]> wrote:
> On Mon, Oct 21, 2013 at 12:02 PM, Barend Gehrels <barend_at_[hidden]> wrote:
>> Hunk wrote On 21-10-2013 14:05:
>>
>>> It is possible to tell boost that my
>>> polygon is CCW orientated so that i dont have to use correct?
>>
>>
>> You can do that, but not with the macro. The macro's
>> (BOOST_GEOMETRY_REGISTER*) don't cover all possible situations. But you can
>> still specialize the traits classes to support your Polygon.
>
> It would be nice if there was a small explanation and example of how to do
> manual registration in the docs. It was a big source of confusion when I was
> first getting up and running with the library.

Please, take a look at the examples in libs/geometry folder.
Specifically at
http://svn.boost.org/svn/boost/trunk/libs/geometry/example/c06_custom_polygon_example.cpp

Best regards,
-- 
Mateusz  Loskot, http://mateusz.loskot.net