constructor() {

    this.x = random(width);

    this.y = random(height);

    this.size = random(10, 50);

    this.deg = 0;

    this.vel = 50/this.size;

    this.col = color(random(100, 255), random(100, 255), random(100, 255));

  }

​

  draw() {

    this.deg += this.vel;

    push();

    fill(this.col);

    translate(this.x, this.y);

    rotate(this.deg);

    square(0, 0, this.size);

    pop();

  }

}

​

let wms = [];

const N = 100;

​

function setup() {

  createCanvas(600, 600);

  angleMode(DEGREES);

  rectMode(CENTER);

  noStroke();

  for (let i = 0; i < N; i += 1) {

    wms.push(new Windmill());

  }

}

​

function draw() {

  background(255);

​

  for (const wm of wms) {

    wm.draw();

  }

}