createCanvas(400, 400);

}

​

function draw() {

  background(0);

  stroke(255);

  strokeWeight(4);

  noFill();

​

  if (mouseX > 250) {

    ellipse(200, 200, 40, 40);

  }

  else if (mouseX> 150)  {

    rectMode(CENTER);

    rect(200,200,40,40)

  }

   else if (mouseX> 50)  {

    line(0,0,width,height)

}

  else {

    point(200,200)

  }

}