a = -1.4;

b = 1.6;

c = 1.0;

d = 0.7;

​

// Number of loops to draw each frame

let loops = 100;

​

let x = 0;

let y = 0;

let xNext, yNext;

​

function setup() {

  createCanvas(400, 400);

  stroke(0, 20);

  background(220);

}

​

function draw() {

  for (i = 0; i < loops; i++) {

    xNext = sin(a * y) + c * cos(a * x);

    yNext = sin(b * x) + d * cos(b * y);

​

    let xScreen = map(xNext, -3, 3, 0, width);

    let yScreen = map(yNext, -3, 3, 0, height);

​

    point(xScreen, yScreen);

​

    x = xNext;

    y = yNext;

  }

}

​