Re: [Boost-users] [geometry] how to using UDT

Subject: Re: [Boost-users] [geometry] how to using UDT
From: Olaf Peter (ope-devel_at_[hidden])
Date: 2014-06-15 07:33:03

Am 13.06.2014 22:48, schrieb Barend Gehrels:
> Hi Olaf,
>
>
> Olaf Peter wrote On 13-6-2014 20:11:
>> Hello,
>>
>> I try to catch some failures using an own user defined type (UDT), 
>> but it doesn't compile e.g. it's hardcoded to use std::sqrt:
>>
>>
>> boost_1_55_0/boost/geometry/strategies/cartesian/distance_pythagoras.hpp:165:13: 
>> error: no matching function for call to 'sqrt(core::my_type<double>)'
>
> Indeed. We're currently fixing that.
Super, when will it be finished? What are the other math function calls 
I didn't covered yet?
>
>>
>> further, is there a way to adapt templated points?
>>
>> BOOST_GEOMETRY_REGISTER_POINT_2D(point_type, 
>> point_type::coordiante_type, bg::cs::cartesian, x, y)
>
>
> Yes, it is possible but we don't have a macro for that. You can 
> specialize your traits (5 traits) manually. For templates that is 
> often convenient, to return the corresponding coordinate type.
>
> See c07_custom_ring_pointer_example.cpp from the examples folder.
works as expected :)

Thanks,
Olaf