Data.Geo.Geodetic.Bearing

A bearing in degrees between 0 and 360.

Documentation

data Bearing

Instances

Eq Bearing

Ord Bearing

Show Bearing

A show instance that prints to 4 decimal places. This is to take floating-point rounding errors into account.

AsBearing p f Bearing

(Profunctor p, Functor f) => AsVincentyDirectResult p f (Coordinate, Bearing)

class AsBearing p f s where

Minimal complete definition

Nothing

Methods

_Bearing :: Optic' p f s Bearing

Instances

(Choice p, Applicative f) => AsBearing p f Double

A prism on bearing to a double between 0 inclusive and 360 exclusive.

>>> (7 :: Double) ^? _Bearing
Just (Bearing 7.0000)

>>> (0 :: Double) ^? _Bearing
Just (Bearing 0.0000)

>>> (359 :: Double) ^? _Bearing
Just (Bearing 359.0000)

>>> (359.997 :: Double) ^? _Bearing
Just (Bearing 359.9970)

>>> (360 :: Double) ^? _Bearing
Nothing

all (\m -> _Bearing # m == n) ((n :: Double) ^? _Bearing)

AsBearing p f Bearing

((~) (* -> * -> *) p (->), Functor f) => AsBearing p f VincentyDirectResult

modBearing :: Double -> Bearing

Construct a bearing such that if the given value is out of bounds, a modulus is taken to keep it within 0 inclusive and 360 exclusive.

>>> modBearing 7
Bearing 7.0000

>>> modBearing 0
Bearing 0.0000

>>> modBearing (-0.0001)
Bearing 359.9999

>>> modBearing 360
Bearing 0.0000

>>> modBearing 359.99999
Bearing 360.0000

>>> modBearing 359.999
Bearing 359.9990