float x = 0;
float y = 0;
float s = 30;

void setup() {
  size(800, 800);
  background(255);
  fill(0);
  smooth();
  rectMode(CENTER);
}

void draw() {
  
  translate(x, y);
  float r = x/2000;
  //float r = 0.3;
  rotate(random(-r, r));
  float yr = x / 160;
  float y2 = random(-yr, yr);
  rect(0, y2, s, s);
  

  x = x + 50;
  if (x > width) {
    x = 0;
    y += 50;
  }
  
}