colour-0.0.0: A colour model for human vision Source code Contents Index

Data.Colour.CIE

Description

Colour operations defined by the International Commission on Illumination (CIE).

Synopsis

cieXYZ :: Fractional a => a -> a -> a -> Colour a toCIEXYZ :: Fractional a => Colour a -> (a, a, a) luminance :: Fractional a => Colour a -> a lightness :: (Ord a, Floating a) => Colour a -> a cieLab :: (Ord a, Floating a) => Colour a -> (a, a, a) cieLuv :: (Ord a, Floating a) => Colour a -> (a, a, a)

Documentation

cieXYZ :: Fractional a => a -> a -> a -> Colour a Source

Construct a Colour from XYZ coordinates for the 2 standard (colourimetric) observer.

toCIEXYZ :: Fractional a => Colour a -> (a, a, a) Source

Return the XYZ colour coordinates for the 2 standard (colourimetric) observer.

luminance :: Fractional a => Colour a -> a Source

Returns the Y colour coordinate (luminance) for the 2 standard (colourimetric) observer.

lightness :: (Ord a, Floating a) => Colour a -> a Source

Returns the lightness of a colour, which is a perceptually uniform measure.

cieLab :: (Ord a, Floating a) => Colour a -> (a, a, a) Source

Returns the CIELAB coordinates of a colour, which is a perceptually uniform colour space.

cieLuv :: (Ord a, Floating a) => Colour a -> (a, a, a) Source

Returns the CIELUV coordinates of a colour, which is a perceptually uniform colour space.

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