// hidden-start import { Variation } from './variations' // hidden-end export const julia: Variation = (x, y) => { const r = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2)); const theta = Math.atan2(x, y); const omega = Math.random() > 0.5 ? 0 : Math.PI; return [ r * Math.cos(theta / 2 + omega), r * Math.sin(theta / 2 + omega) ] }