p5js

var t2=0;

function x1(t) {
  return sin(t / 20);
}

function y1(t) {
  return cos(t / 10);
}

function x2(t) {
  return sin(t / 10) * 200;
}

function y2(t) {
  return cos(t / 20) * 200;
}

var NUM_LINES = 600;
var NUM_LINES2 = 200;

function setup() {
  background(20);
  createCanvas(900, 600);
}

function draw() {
  background(20);
  strokeWeight(1.5);
  stroke(250, 75);

  translate(width / 2, height / 2);

  for (var i = 0; i < NUM_LINES; i += 8) {
    line(x1(t2 - 1 * 80 + 90), y1(t2 * i * 40), x2(t2 - i), y2(t2 - i * 30));
  }

  t2 += 0.01;
}