@macrostrat/column-components/dist/chroma-js/src/io/oklab/oklab2rgb.cjs

React rendering primitives for stratigraphic columns

"use strict";
require("../../utils/type.cjs");
const unpack = require("../../utils/unpack.cjs");
const multiplyMatrices = require("../../utils/multiply-matrices.cjs");
const lab2rgb = require("../lab/lab2rgb.cjs");
const oklab2rgb = (...args) => {
  args = unpack(args, "lab");
  const [L, a, b, ...rest] = args;
  const [X, Y, Z] = OKLab_to_XYZ([L, a, b]);
  const [r, g, b_] = lab2rgb.xyz2rgb(X, Y, Z);
  return [r, g, b_, ...rest.length > 0 && rest[0] < 1 ? [rest[0]] : []];
};
function OKLab_to_XYZ(OKLab) {
  var LMStoXYZ = [
    [1.2268798758459243, -0.5578149944602171, 0.2813910456659647],
    [-0.0405757452148008, 1.112286803280317, -0.0717110580655164],
    [-0.0763729366746601, -0.4214933324022432, 1.5869240198367816]
  ];
  var OKLabtoLMS = [
    [1, 0.3963377773761749, 0.2158037573099136],
    [1, -0.1055613458156586, -0.0638541728258133],
    [1, -0.0894841775298119, -1.2914855480194092]
  ];
  var LMSnl = multiplyMatrices(OKLabtoLMS, OKLab);
  return multiplyMatrices(
    LMStoXYZ,
    LMSnl.map((c) => c ** 3)
  );
}
module.exports = oklab2rgb;
//# sourceMappingURL=oklab2rgb.cjs.map