createCanvas(400, 400);

  noLoop();

}

function distance(x1, x2, y1, y2){

  return sqrt((x2 - x1)*(x2-x1) + (y2-y1)*(y2-y1))

}

function draw() {

  // background(220);

  var x1 = random() * width;

  var x2 = random() * width;

  var y1 = random() * width;

  var y2 = random() * width;

  var m = distance(x1, x2, y1, y2)

  var dx = (x1 - x2) / m * 10;

  var dy = (y1 - y2) / m * 10;

  threshold = 10;

  var on = true

  while(distance(x1, x2, y1, y2) > threshold){

    newX = x1 - dx;

    newY = y1 - dy;

    if(on){

      line(x1, y1, newX, newY);

    }

    x1 = newX;

    y1 = newY;

    on = !on;

  }

}