Safe Haskell	Safe-Inferred
Language	Haskell98

Data.Colour.RGBSpace.HSL

Synopsis

data RGB a
hslView :: ( Fractional a, Ord a) => RGB a -> (a, a, a)
hue :: ( Fractional a, Ord a) => RGB a -> a
saturation :: ( Fractional a, Ord a) => RGB a -> a
lightness :: ( Fractional a, Ord a) => RGB a -> a
hsl :: ( RealFrac a, Ord a) => a -> a -> a -> RGB a

Documentation

data RGB a Source #

An RGB triple for an unspecified colour space.

Instances

Instances details

Functor RGB Source #
Instance details Defined in Data.Colour.RGB Methods fmap :: (a -> b) -> RGB a -> RGB b Source # (<$) :: a -> RGB b -> RGB a Source #
Applicative RGB Source #
Instance details Defined in Data.Colour.RGB Methods pure :: a -> RGB a Source # (<>) :: RGB (a -> b) -> RGB a -> RGB b Source # liftA2 :: (a -> b -> c) -> RGB a -> RGB b -> RGB c Source # (>) :: RGB a -> RGB b -> RGB b Source # (<*) :: RGB a -> RGB b -> RGB a Source #
Eq a => Eq ( RGB a) Source #
Instance details Defined in Data.Colour.RGB Methods (==) :: RGB a -> RGB a -> Bool Source # (/=) :: RGB a -> RGB a -> Bool Source #
Read a => Read ( RGB a) Source #
Instance details Defined in Data.Colour.RGB Methods readsPrec :: Int -> ReadS ( RGB a) Source # readList :: ReadS [ RGB a] Source # readPrec :: ReadPrec ( RGB a) Source # readListPrec :: ReadPrec [ RGB a] Source #
Show a => Show ( RGB a) Source #
Instance details Defined in Data.Colour.RGB Methods showsPrec :: Int -> RGB a -> ShowS Source # show :: RGB a -> String Source # showList :: [ RGB a] -> ShowS Source #

hslView :: ( Fractional a, Ord a) => RGB a -> (a, a, a) Source #

Returns the HSL (hue-saturation-lightness) coordinates of an RGB triple. See hue , saturation , and lightness .

hue :: ( Fractional a, Ord a) => RGB a -> a Source #

The hue coordinate of an RGB value is in degrees. Its value is always in the range 0-360.

saturation :: ( Fractional a, Ord a) => RGB a -> a Source #

Returns the saturation coordinate (range [0, 1]) of an RGB triple for the HSL (hue-saturation-lightness) system. Note: This is different from saturation for the Data.Colour.RGBSpace.HSV

lightness :: ( Fractional a, Ord a) => RGB a -> a Source #

Returns the lightness coordinate (range [0, 1]) of an RGB triple for the HSL (hue-saturation-lightness) system.

hsl :: ( RealFrac a, Ord a) => a -> a -> a -> RGB a Source #

Convert HSL (hue-saturation-lightness) coordinates to an RGB value. Hue is expected to be measured in degrees [0,360], while saturation and lightness are expected to be in the closed range [0,1].