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clarified blue vs chroma b in oklab functions

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Max Cahill 2022-04-22 10:08:55 +10:00
parent 6e65f82474
commit be48dd9115
1 changed files with 7 additions and 7 deletions
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14
colour.lua
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@ -161,20 +161,20 @@ function colour.oklab_to_rgb(l, a, b)
_m = math.pow(_m, 3.0) _m = math.pow(_m, 3.0)
_s = math.pow(_s, 3.0) _s = math.pow(_s, 3.0)
local r, g, b = love.math.linearToGamma( local red, green, blue = love.math.linearToGamma(
( 4.0767245293 * _l - 3.3072168827 * _m + 0.2307590544 * _s), ( 4.0767245293 * _l - 3.3072168827 * _m + 0.2307590544 * _s),
(-1.2681437731 * _l + 2.6093323231 * _m - 0.3411344290 * _s), (-1.2681437731 * _l + 2.6093323231 * _m - 0.3411344290 * _s),
(-0.0041119885 * _l - 0.7034763098 * _m + 1.7068625689 * _s) (-0.0041119885 * _l - 0.7034763098 * _m + 1.7068625689 * _s)
) )
return r, g, b return red, green, blue
end end
function colour.rgb_to_oklab(r, g, b) function colour.rgb_to_oklab(red, green, blue)
r, g, b = love.math.gammaToLinear(r, g, b) red, green, blue = love.math.gammaToLinear(red, green, blue)
local _l = 0.4121656120 * r + 0.5362752080 * g + 0.0514575653 * b local _l = 0.4121656120 * red + 0.5362752080 * green + 0.0514575653 * blue
local _m = 0.2118591070 * r + 0.6807189584 * g + 0.1074065790 * b local _m = 0.2118591070 * red + 0.6807189584 * green + 0.1074065790 * blue
local _s = 0.0883097947 * r + 0.2818474174 * g + 0.6302613616 * b local _s = 0.0883097947 * red + 0.2818474174 * green + 0.6302613616 * blue
_l = math.pow(_l, 1.0 / 3.0) _l = math.pow(_l, 1.0 / 3.0)
_m = math.pow(_m, 1.0 / 3.0) _m = math.pow(_m, 1.0 / 3.0)