​

function setup() {

  createCanvas(400, 400);

  background(240);

}

​

function draw() {

  if (mouseIsPressed) {

    let strichstaerke = random(7);

    let strichfarbe = random(255);

    strokeWeight(strichstaerke);

    stroke(strichfarbe);

    let x2 = mouseX + random(-10, 10);

    let y2 = mouseY + random(-10, 10);

    line(x1, y1, x2 , y2);

  }

}

​

function mousePressed() {

  x1 = mouseX;

  y1 = mouseY;

}

​

function keyPressed(){

  background(240);

}