​

var ras = 20;

var canv = 50;

​

var choise = [-1,  1];

​

function setup() {

  createCanvas((n -1) * ras  +2*canv, (n -1) * ras +2*canv);

  background(230);

  //frameRate(24);

}

​

function draw() {

  strokeWeight(10); 

  //noSmooth();

  let oldx = round(random(0,n-1));

  let oldy = round(random(0,n-1));

  let len = round(random(0,7))

  stroke(random(222,255), random(20,222), 0);

  for (let i = 0; i < len; i++){

    let newx = oldx + random(choise);

    let newy = oldy + random(choise);

    if (dist(newx,newy, n/2, n/2) > n/2 - 10){

      newx = oldx;

      newy = oldy;

    }

    line (oldx* ras  + canv,   oldy* ras + canv, newx* ras  + canv,   newy* ras + canv);

    oldx = newx;

    oldy = newy;

    //circle(round(random(0,n-1))* ras  + canv,   round(random(0,n-1))* ras + canv, 20);

  }

}