let rectY = 150;

let rectWidth = 250;

let rectHeight = 50;

​

let ellipseDiam = 100;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

}

​

function draw() {

  background(220, 10, 120);

  noStroke();

​

  fill(255);

​

  rect(rectX, rectY, rectWidth, rectHeight);

  ellipse(mouseX, mouseY, ellipseDiam, ellipseDiam);

}

​