createCanvas(400, 400);

}

​

function draw() {

  background(220);

  noStroke();

​

  inc = inc + 0.05

​

  let value = sin(inc);

​

  let newValue = map(value, -1, 1, 0, 300);

  ellipse(newValue, height / 2, 40);

​

  // let a = map(mouseX, 0, width, 40, 175);

  // circle()

}