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|
(.require
[library
[lux (.except)
[data
[collection
["[0]" list (.use "[1]#[0]" functor)]]]
[math
[number
["i" int]
["f" frac]]]]]
[//
[rgb (.only RGB)]
["[0]" hsl]
["[0]" hsb]])
(def (ratio it)
(-> Frac
Frac)
(cond (f.> +1.0 it)
(f.% +1.0 it)
(f.< +0.0 it)
(|> it (f.% +1.0) (f.+ +1.0))
... else
it))
(with_template [<name> <1> <2>]
[(`` (def .public (<name> it)
(-> RGB
[RGB RGB RGB])
(let [(open "/[0]") (hsl.of_rgb it)]
[it
(hsl.rgb (hsl.hsl (|> /#hue (f.+ <1>) ..ratio)
/#saturation
/#luminance))
(hsl.rgb (hsl.hsl (|> /#hue (f.+ <2>) ..ratio)
/#saturation
/#luminance))])))]
[triad (|> +1.0 (f./ +3.0)) (|> +2.0 (f./ +3.0))]
[clash (|> +1.0 (f./ +4.0)) (|> +3.0 (f./ +4.0))]
[split_complement (|> +1.0 (f./ +5.0)) (|> +3.0 (f./ +5.0))]
)
(with_template [<name> <1> <2> <3>]
[(`` (def .public (<name> it)
(-> RGB
[RGB RGB RGB RGB])
(let [(open "/[0]") (hsl.of_rgb it)
of_hue (is (-> hsl.Value
RGB)
(function (_ hue)
(hsl.rgb (hsl.hsl hue /#saturation /#luminance))))]
[it
(|> /#hue (f.+ <1>) ..ratio of_hue)
(|> /#hue (f.+ <2>) ..ratio of_hue)
(|> /#hue (f.+ <3>) ..ratio of_hue)])))]
[square (|> +1.0 (f./ +4.0)) (|> +2.0 (f./ +4.0)) (|> +3.0 (f./ +4.0))]
[tetradic (|> +2.0 (f./ +12.0)) (|> +6.0 (f./ +12.0)) (|> +8.0 (f./ +12.0))]
)
(type .public Spread
Frac)
... https://en.wikipedia.org/wiki/Color_scheme
(type .public Scheme
(-> Spread Nat RGB
(List RGB)))
(def .public (analogous spread variations it)
Scheme
(let [it (hsl.of_rgb it)
hue (the hsl.#hue it)
saturation (the hsl.#saturation it)
luminance (the hsl.#luminance it)
spread (..ratio spread)]
(list#each (function (_ idx)
(hsl.rgb (hsl.hsl (|> idx ++ .int i.frac (f.* spread) (f.+ hue) ..ratio)
saturation
luminance)))
(list.indices variations))))
(def .public (monochromatic spread variations it)
Scheme
(let [it (hsb.of_rgb it)
hue (hsb.hue it)
saturation (hsb.saturation it)
brightness (hsb.brightness it)
spread (..ratio spread)]
(|> (list.indices variations)
(list#each (|>> ++ .int i.frac
(f.* spread)
(f.+ brightness)
..ratio
(hsb.hsb hue saturation)
hsb.rgb)))))
|
