diff options
Diffstat (limited to '')
| -rw-r--r-- | stdlib/source/lux/data/color.lux | 120 |
1 files changed, 82 insertions, 38 deletions
diff --git a/stdlib/source/lux/data/color.lux b/stdlib/source/lux/data/color.lux index c242a48ad..0c96f46c4 100644 --- a/stdlib/source/lux/data/color.lux +++ b/stdlib/source/lux/data/color.lux @@ -1,7 +1,7 @@ (.module: [lux #* [control - ["eq" equivalence]] + [equivalence (#+ Equivalence)]] [data [number ("rev/." Interval<Rev>)] [collection @@ -23,22 +23,39 @@ (-> Frac Nat) (|>> (f/* rgb-factor) frac-to-int .nat)) -(abstract: #export Color {} +(type: #export RGB {#red Nat #green Nat - #blue Nat} + #blue Nat}) - (def: #export (color [red green blue]) - (-> [Nat Nat Nat] Color) +(type: #export HSL + [Frac Frac Frac]) + +(type: #export CMYK + {#cyan Frac + #magenta Frac + #yellow Frac + #key Frac}) + +(type: #export HSB + [Frac Frac Frac]) + +(abstract: #export Color + {} + + RGB + + (def: #export (from-rgb [red green blue]) + (-> RGB Color) (:abstraction {#red (n/% rgb red) #green (n/% rgb green) #blue (n/% rgb blue)})) (def: #export to-rgb - (-> Color [Nat Nat Nat]) + (-> Color RGB) (|>> :representation)) - (structure: #export _ (eq.Equivalence Color) + (structure: #export _ (Equivalence Color) (def: (= reference sample) (let [[rr rg rb] (:representation reference) [sr sg sb] (:representation sample)] @@ -48,7 +65,7 @@ ) (def: #export (to-hsl color) - (-> Color [Frac Frac Frac]) + (-> Color HSL) (let [[red green blue] (to-rgb color) red (scale-down red) green (scale-down green) @@ -58,7 +75,9 @@ luminance (|> (f/+ max min) (f// +2.0))] (if (f/= max min) ## Achromatic - [+0.0 +0.0 luminance] + [+0.0 + +0.0 + luminance] ## Chromatic (let [diff (|> max (f/- min)) saturation (|> diff @@ -100,23 +119,25 @@ p))) (def: #export (from-hsl [hue saturation luminance]) - (-> [Frac Frac Frac] Color) + (-> HSL Color) (if (f/= +0.0 saturation) ## Achromatic (let [intensity (scale-up luminance)] - (color [intensity intensity intensity])) + (from-rgb {#red intensity + #green intensity + #blue intensity})) ## Chromatic (let [q (if (f/< +0.5 luminance) (|> saturation (f/+ +1.0) (f/* luminance)) (|> luminance (f/+ saturation) (f/- (f/* saturation luminance)))) p (|> luminance (f/* +2.0) (f/- q)) third (|> +1.0 (f// +3.0))] - (color [(scale-up (|> hue (f/+ third) (hue-to-rgb p q))) - (scale-up (|> hue (hue-to-rgb p q))) - (scale-up (|> hue (f/- third) (hue-to-rgb p q)))])))) + (from-rgb {#red (scale-up (|> hue (f/+ third) (hue-to-rgb p q))) + #green (scale-up (|> hue (hue-to-rgb p q))) + #blue (scale-up (|> hue (f/- third) (hue-to-rgb p q)))})))) (def: #export (to-hsb color) - (-> Color [Frac Frac Frac]) + (-> Color HSB) (let [[red green blue] (to-rgb color) red (scale-down red) green (scale-down green) @@ -148,7 +169,7 @@ brightness])))) (def: #export (from-hsb [hue saturation brightness]) - (-> [Frac Frac Frac] Color) + (-> HSB Color) (let [hue (|> hue (f/* +6.0)) i (math.floor hue) f (|> hue (f/- i)) @@ -160,12 +181,12 @@ red (case mod 0 v 1 q 2 p 3 p 4 t 5 v _ (undefined)) green (case mod 0 t 1 v 2 v 3 q 4 p 5 p _ (undefined)) blue (case mod 0 p 1 p 2 t 3 v 4 v 5 q _ (undefined))] - (color [(scale-up red) - (scale-up green) - (scale-up blue)]))) + (from-rgb {#red (scale-up red) + #green (scale-up green) + #blue (scale-up blue)}))) (def: #export (to-cmyk color) - (-> Color [Frac Frac Frac Frac]) + (-> Color CMYK) (let [[red green blue] (to-rgb color) red (scale-down red) green (scale-down green) @@ -177,19 +198,26 @@ cyan (|> +1.0 (f/- red) (f/- key) (f/* f)) magenta (|> +1.0 (f/- green) (f/- key) (f/* f)) yellow (|> +1.0 (f/- blue) (f/- key) (f/* f))] - [cyan magenta yellow key])) + {#cyan cyan + #magenta magenta + #yellow yellow + #key key})) (def: #export (from-cmyk [cyan magenta yellow key]) - (-> [Frac Frac Frac Frac] Color) + (-> CMYK Color) (if (f/= +1.0 key) - (color [0 0 0]) + (from-rgb {#red 0 + #green 0 + #blue 0}) (let [red (|> (|> +1.0 (f/- cyan)) (f/* (|> +1.0 (f/- key)))) green (|> (|> +1.0 (f/- magenta)) (f/* (|> +1.0 (f/- key)))) blue (|> (|> +1.0 (f/- yellow)) (f/* (|> +1.0 (f/- key))))] - (color [(scale-up red) (scale-up green) (scale-up blue)])))) + (from-rgb {#red (scale-up red) + #green (scale-up green) + #blue (scale-up blue)})))) (def: (normalize ratio) (-> Frac Frac) @@ -214,12 +242,16 @@ .nat))) [redS greenS blueS] (to-rgb start) [redE greenE blueE] (to-rgb end)] - (color [(interpolate' redE redS) - (interpolate' greenE greenS) - (interpolate' blueE blueS)]))) + (from-rgb {#red (interpolate' redE redS) + #green (interpolate' greenE greenS) + #blue (interpolate' blueE blueS)}))) -(def: #export black Color (color [0 0 0])) -(def: #export white Color (color [top top top])) +(def: #export black (from-rgb {#red 0 + #green 0 + #blue 0})) +(def: #export white (from-rgb {#red top + #green top + #blue top})) (do-template [<name> <target>] [(def: #export (<name> ratio color) @@ -234,9 +266,9 @@ (-> Color Color) (let [[red green blue] (to-rgb color) adjust (function (_ value) (|> top (n/- value)))] - (..color [(adjust red) - (adjust green) - (adjust blue)]))) + (from-rgb {#red (adjust red) + #green (adjust green) + #blue (adjust blue)}))) (do-template [<name> <op>] [(def: #export (<name> ratio color) @@ -255,15 +287,21 @@ (def: #export (gray-scale color) (-> Color Color) (let [[_ _ luminance] (to-hsl color)] - (from-hsl [+0.0 +0.0 luminance]))) + (from-hsl [+0.0 + +0.0 + luminance]))) (do-template [<name> <1> <2>] [(def: #export (<name> color) (-> Color [Color Color Color]) (let [[hue saturation luminance] (to-hsl color)] [color - (from-hsl [(|> hue (f/+ <1>) normalize) saturation luminance]) - (from-hsl [(|> hue (f/+ <2>) normalize) saturation luminance])]))] + (from-hsl [(|> hue (f/+ <1>) normalize) + saturation + luminance]) + (from-hsl [(|> hue (f/+ <2>) normalize) + saturation + luminance])]))] [triad (|> +1.0 (f// +3.0)) (|> +2.0 (f// +3.0))] [clash (|> +1.0 (f// +4.0)) (|> +3.0 (f// +4.0))] @@ -275,9 +313,15 @@ (-> Color [Color Color Color Color]) (let [[hue saturation luminance] (to-hsl color)] [color - (from-hsl [(|> hue (f/+ <1>) normalize) saturation luminance]) - (from-hsl [(|> hue (f/+ <2>) normalize) saturation luminance]) - (from-hsl [(|> hue (f/+ <3>) normalize) saturation luminance])]))] + (from-hsl [(|> hue (f/+ <1>) normalize) + saturation + luminance]) + (from-hsl [(|> hue (f/+ <2>) normalize) + saturation + luminance]) + (from-hsl [(|> hue (f/+ <3>) normalize) + saturation + luminance])]))] [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))] |