// port with some edits
    
// edit 1 - make small canvas 
// since default is full screen  
const myw = 600;
const myh = 800;


  
  let h = 0;

function setup() {
  createCanvas(myw, myh);        // edit
}

function draw() {
  background(0);
  drawArc(0, 0, h);
  noLoop();           // edit 2 - no need to draw twice 
}

function drawArc(x, y, h) {
  noStroke();
  colorMode(HSL, 360);
  fill(h, 200, 200);
  ellipse(x+70, y+60, 80);
  rect(x+30, y+60, 80, 60);
  if (x+30 < myw) {                 // edit 
    drawArc(x+110, y, h+30);
  }
  if (y+30 < myh) {                 // edit 
    drawArc(x, y+140, h+30);
  }
}