vuetify
Version:
Vue.js 2 Semantic Component Framework
18 lines • 870 B
JavaScript
var delta = 0.20689655172413793; // 6÷29
var cielabForwardTransform = function cielabForwardTransform(t) {
return t > Math.pow(delta, 3) ? Math.cbrt(t) : t / (3 * Math.pow(delta, 2)) + 4 / 29;
};
var cielabReverseTransform = function cielabReverseTransform(t) {
return t > delta ? Math.pow(t, 3) : 3 * Math.pow(delta, 2) * (t - 4 / 29);
};
export function fromXYZ(xyz) {
var transform = cielabForwardTransform;
var transformedY = transform(xyz[1]);
return [116 * transformedY - 16, 500 * (transform(xyz[0] / 0.95047) - transformedY), 200 * (transformedY - transform(xyz[2] / 1.08883))];
}
export function toXYZ(lab) {
var transform = cielabReverseTransform;
var Ln = (lab[0] + 16) / 116;
return [transform(Ln + lab[1] / 500) * 0.95047, transform(Ln), transform(Ln - lab[2] / 200) * 1.08883];
}
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