shade(canvas, { kind: 'stipple', fps: , delay: , freeze: '', move: (t) => ({ x: 90 * Math.sin(t * Math.PI / 2) }), marks: (m, t) => m.glow({ at: [160 + 90 * Math.sin(t * Math.PI / 2), 110], radius: 70, ink: '#1b1530' }) })