​

function setup() { 

  createCanvas(400, 400);

  position = 0; 

  mouseX;

} 

​

function draw() { 

  //background(220);

  //ellipse(position, position, mouseX/2, mouseY/2);

  //position = position + 1; 

  if(position < width){

    ellipse(position, position, mouseX/2, mouseY/2);

    position = position +1;

​

}

  print("position = " + position);

}

​