Safe Haskell | Safe |
---|---|
Language | Haskell98 |
Colour operations defined by the International Commission on Illumination (CIE).
- data Colour a
- cieXYZ :: Fractional a => a -> a -> a -> Colour a
- cieXYZView :: Fractional a => Colour a -> (a, a, a)
- luminance :: Fractional a => Colour a -> a
- toCIEXYZ :: Fractional a => Colour a -> (a, a, a)
- data Chromaticity a
- mkChromaticity :: Fractional a => a -> a -> Chromaticity a
- chromaCoords :: Fractional a => Chromaticity a -> (a, a, a)
- chromaX :: Fractional a => Chromaticity a -> a
- chromaY :: Fractional a => Chromaticity a -> a
- chromaZ :: Fractional a => Chromaticity a -> a
- chromaConvert :: (Fractional b, Real a) => Chromaticity a -> Chromaticity b
- chromaColour :: Fractional a => Chromaticity a -> a -> Colour a
- lightness :: (Ord a, Floating a) => Chromaticity a -> Colour a -> a
- cieLABView :: (Ord a, Floating a) => Chromaticity a -> Colour a -> (a, a, a)
- cieLAB :: (Ord a, Floating a) => Chromaticity a -> a -> a -> a -> Colour a
Documentation
data Colour a
cieXYZ :: Fractional a => a -> a -> a -> Colour a
Construct a Colour
from XYZ coordinates for the 2° standard
(colourimetric) observer.
cieXYZView :: Fractional a => Colour a -> (a, a, a)
Returns the XYZ colour coordinates for the 2° standard (colourimetric) observer.
luminance :: Fractional a => Colour a -> a
Returns the Y colour coordinate (luminance) for the 2° standard (colourimetric) observer.
toCIEXYZ :: Fractional a => Colour a -> (a, a, a)
Deprecated: toCIEXYZ
has been renamed cieXYZView
data Chromaticity a
Eq a => Eq (Chromaticity a) | |
(Fractional a, Read a) => Read (Chromaticity a) | |
(Fractional a, Show a) => Show (Chromaticity a) |
mkChromaticity :: Fractional a => a -> a -> Chromaticity a
Constructs Chromaticity
from the CIE little x, little y
coordinates for the 2° standard (colourimetric) observer.
chromaCoords :: Fractional a => Chromaticity a -> (a, a, a)
Returns the CIE little x, little y, little z coordinates for the 2° standard (colourimetric) observer.
chromaX :: Fractional a => Chromaticity a -> a
Returns the CIE little x coordinate for the 2° standard (colourimetric) observer.
chromaY :: Fractional a => Chromaticity a -> a
Returns the CIE little y coordinate for the 2° standard (colourimetric) observer.
chromaZ :: Fractional a => Chromaticity a -> a
Returns the CIE little z coordinate for the 2° standard (colourimetric) observer.
chromaConvert :: (Fractional b, Real a) => Chromaticity a -> Chromaticity b
Change the type used to represent the chromaticity coordinates.
:: Fractional a | |
=> Chromaticity a | |
-> a | |
-> Colour a |
Constructs a colour from the given Chromaticity
and luminance
.
:: (Ord a, Floating a) | |
=> Chromaticity a | White point |
-> Colour a | |
-> a |
Returns the lightness of a colour with respect to a given white point. Lightness is a perceptually uniform measure.
:: (Ord a, Floating a) | |
=> Chromaticity a | White point |
-> Colour a | |
-> (a, a, a) |