imterah/element-portable
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Added formula sources

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ginnyTheCat 2020-10-11 00:37:00 +02:00
parent 014671d8ce
commit 046f498295
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src/utils/colour.ts
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@ -45,6 +45,9 @@ function generateAB(hue: number, chroma: number): [number, number] {
} }
function labToRGB(l: number, a: number, b: number): [number, number, number] { function labToRGB(l: number, a: number, b: number): [number, number, number] {
// https://en.wikipedia.org/wiki/CIELAB_color_space#Reverse_transformation
// https://en.wikipedia.org/wiki/SRGB#The_forward_transformation_(CIE_XYZ_to_sRGB)
// Convert CIELAB to CIEXYZ (D65) // Convert CIELAB to CIEXYZ (D65)
let y = (l + 16) / 116; let y = (l + 16) / 116;
const x = adjustXYZ(y + a / 500) * 0.9505; const x = adjustXYZ(y + a / 500) * 0.9505;