var pos;

var t = 0;

const dt = 0.05;

​

function setup() {

  createCanvas(400, 400);

  pos = createVector(200,400);

}

​

function f(x,y,d){

  if (d < 1) return

​

  nx = x+ (cos(noise(t)*TWO_PI)*35)

    ny = y- sin(noise(t))*75

    line(x,y,nx,ny)

    t+=dt;

    f(nx,ny,d-1)

  for (var i = 0; i < 3 ; i ++) {

    if (random() > 0.65) {

      nx = x+ (cos(noise(t)*TWO_PI)*35)

      ny = y- sin(noise(t))*75

      line(x,y,nx,ny)

      t+=dt;

      f(nx,ny,d-1)

    }

  }

}

​

function draw() {

  background(220);

  f(200,400,7)

  noLoop();

}