knot

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(255);

  rectMode(CENTER);

}

​

function draw() {

  // jump to the center of the sketch

  translate(width/2, height/2);

  // mapping of sin over time (-1 ... +1) to -200 ... 200

  // speed is defined by /1000

​

  let s = map(sin(millis()/500), -1, 1, -40, 40);

  let c = map(cos(millis()/500), -1, 1, -30, 40);

  noFill();

  stroke(0);

  background(255, 255, 255, 2);

​

  translate(s,c);

  rotate(millis()/500); 

  rect(0, 0, 200, 300); 

  rotate(PI / 3.0);

  rect(750,300,600,300);

  ellipse(550,300,700,400);

​

}