pex-color
Version:
Color utilities (css, p3, hex, hsl, hsv, hwb, lab, lch, xyz, okhsl, okhsv, oklab, oklch, hpluv, hsluv, lchuv, bytes) for PEX.
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JavaScript
import { fromLabD50, toLabD50 } from "./lab.js";
import { lchToLab, labToLch } from "./utils.js";
/**
* @typedef {number[]} lch CIELCh Luminance Chroma Hue. Cylindrical form of Lab.
*
* All components in the range 0 <= x <= 1
* @see {@link https://en.wikipedia.org/wiki/CIELAB_color_space#Cylindrical_model}
*/
/**
* Updates a color based on LCH values and alpha.
* @alias module:pex-color.fromLCH
* @param {import("./color.js").color} color
* @param {number} l
* @param {number} c
* @param {number} h
* @param {number} [a]
* @returns {import("./color.js").color}
*/
export function fromLCH(color, l, c, h, a) {
lchToLab(l, c, h, color);
return fromLabD50(color, color[0], color[1], color[2], a);
}
/**
* Returns a LCH representation of a given color.
* @alias module:pex-color.toLCH
* @param {import("./color.js").color} color
* @param {Array} out
* @returns {lch}
*/
export function toLCH(color, out = []) {
toLabD50(color, out);
return labToLch(out[0], out[1], out[2], out);
}