Modulecolour-2.3.7Haskell98

Data.Colour.RGBSpace.HSL

1 type
5 values

Packagecolour-2.3.7
Exports6
LanguageHaskell98
LicenceMIT
SourceRGB.hs

datadata RGB a

An RGB triple for an unspecified colour space.

Instances5Functor, Applicative, Eq, Read, Show

Functor RGBDefined in colour-2.3.7 · Data.Colour.RGB
Applicative RGBDefined in colour-2.3.7 · Data.Colour.RGB
Eq a => Eq (RGB a)Defined in colour-2.3.7 · Data.Colour.RGB
Read a => Read (RGB a)Defined in colour-2.3.7 · Data.Colour.RGB
Show a => Show (RGB a)Defined in colour-2.3.7 · Data.Colour.RGB

valuehslView :: (Fractional a, Ord a) => RGB a -> (a, a, a)

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

valuehue :: (Fractional a, Ord a) => RGB a -> a

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

valuesaturation :: (Fractional a, Ord a) => RGB a -> a

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

valuelightness :: (Fractional a, Ord a) => RGB a -> a

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

valuehsl :: (RealFrac a, Ord a) => a -> a -> a -> RGB a

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].