function setup() { // explain this function

  createCanvas(200, 200);

  noStroke();

}

function draw() { // explain how this function works

  let x = mouseX;

  let y = mouseY;

  let ix = width - mouseX;  // Inverse X

  let iy = height - mouseY; // Inverse Y

  background('#8c34eb');

  fill(255, 150); // color change to #color

  ellipse(x, height/2, y, y);

  fill(0, 159);

  ellipse(ix, height/2, iy, iy);

}