a fork

let playBool = true;
let a, b, c, d;
function setup() {
  createCanvas(windowWidth, windowHeight);
  background(100);

  background(random(0, 30));
  angleMode(DEGREES);
  colorMode(HSB, 100);
  a = random(1, 5);
  b = random(-5, 5);
  c = random(2, 5);
  d = random(1, 5);
}

function draw() {
  if (!playBool) {
    frameCount--;
  } else {
    translate(width / 2, height / 2);
    t = frameCount / 20;
    triDraw();
  }
}

function triDraw() {
  fill(mouseX / 4, mouseY, 255, 2);
  x = (width / 2) * cos(t * b) - (width / 3) * sin(t / c);
  y = (height / 2) * sin(t / a) + (height / 3) * sin(t / c);
  x1 = (width / 2) * cos(t / c) * sin(t * a) - (width / 3) * tan(t / d);
  y1 = (height / 2) * cos(t / a) - (height / 2) * cos(t);
  stroke(
    50 + 50 * sin(y / 4) * sin(y / 4),
    50 + 50 * cos(y / 3) * cos(y / 3),
    100,
    10
  );
  line(x, y, x1, y1);
  line(x, y, -x1, -y1);
  line(x, y, -x1, y1);
  line(x, y, x1, -y1);
}

function mousePressed() {
  playBool = !playBool;
  a = random(1, 5);
  b = random(-5, 5);
  c = random(2, 5);
  d = random(1, 5);
}