Edit File: convertLuvToXyz50.js
import { k } from '../xyz50/constants.js'; import { D50 } from '../constants.js'; export const u_fn = (x, y, z) => (4 * x) / (x + 15 * y + 3 * z); export const v_fn = (x, y, z) => (9 * y) / (x + 15 * y + 3 * z); export const un = u_fn(D50.X, D50.Y, D50.Z); export const vn = v_fn(D50.X, D50.Y, D50.Z); const convertLuvToXyz50 = ({ l, u, v, alpha }) => { let up = u / (13 * l) + un; let vp = v / (13 * l) + vn; let y = D50.Y * (l <= 8 ? l / k : Math.pow((l + 16) / 116, 3)); let x = (y * (9 * up)) / (4 * vp); let z = (y * (12 - 3 * up - 20 * vp)) / (4 * vp); let res = { mode: 'xyz50', x, y, z }; if (alpha !== undefined) { res.alpha = alpha; } return res; }; export default convertLuvToXyz50;
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