Re: [boost] [interest] Is there interest in planar angle library ?

Subject: Re: [boost] [interest] Is there interest in planar angle library ?
From: Klaim - Joël Lamotte (mjklaim_at_[hidden])
Date: 2014-06-17 17:14:24

I am interested, I have used similar libraries with great effects.

On Tue, Jun 17, 2014 at 10:12 PM, Matus Chochlik <chochlik_at_[hidden]> wrote:

> Hi,
>
> I would like to gauge interest in adding a very lightweight library
> implementing a class for handling planar angles and related operations to
> Boost.
>
> The library sources and several examples of usage can be found here:
>
> https://github.com/matus-chochlik/angle
>
> It does not conform to Boost conventions yet, nor is there any
> documentation, but the library is very simple to use:
>
> There is a template angles::angle<T> representing planar angles, using type
> T to store the angle value in radians. Conversions for 10 common angle
> units are included and new units can easily be added. The library also
> implements construction functions and user-defined literal operators
> allowing to specify angles in various units and also implements overloads
> of functions like sin, cos, etc.
>
> The only external header that this library includes is standard `cmath`.
>
> Here follow some examples of usage:
>
> using namespace angles;
>
> for(angle<double> a; a < 4_turns; a += 45_deg)
> {
>         std::cout << a.to<unit::degree>() << std::endl;
> }
>
> for(angle<double> a=-quarters(2); a <= quarters(2); a += gradians(50))
> {
>         std::cout << a.to<unit::turn>() << std::endl;
> }
>
> for(angle<double> a; a < turns(1); a += degrees(15))
> {
>         std::cout << sin(a) << std::endl;
> }
>
> assert(turns(1) == quarters(4));
> assert(degrees(90) == gradians(100));
> assert(degrees(45) == quarters(0.5));
> assert(degrees(2) == minutes(120));
> assert(minutes(4) == seconds(240));
> assert(degrees(1) == seconds(3600));
> assert(turns(0.5) == gradians(200));
> assert(pi(1) == quarters(2));
>
> assert( 3_o_clock ==  90_deg);
> assert( 6_o_clock == 200_gon);
> assert( 7_o_clock == 210_deg);
> assert( 9_o_clock == 300_gon);
> assert(11_o_clock == 1_turns - 30_deg);
> assert(12_o_clock == 2_pi);
>
> Please let me know if you are interested in the 'Boostification' of this
> library or if you have any ideas on how it could be improved.
>
> Best regards,
>
> Matus
>
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