constructor(_x, _y, _c, _r) {

    this.x = this.x_init = _x;

    this.y = this.y_init = _y;

    this.c = _c;

    this.r = _r;

    this.param_noise = random(10000.0);

    this.position_noise_x = random(10000.0);

    this.position_noise_y = random(10000.0);

    this.increment_noise = 0.01;

    this.increment_noise_position = 0.001;

  }

​

  draw() {

    this.param_noise = this.param_noise + this.increment_noise;

    this.position_noise_x += this.increment_noise_position;

    this.position_noise_y += this.increment_noise_position;

    this.x = this.x_init + 100 * noise(this.position_noise_x);

    this.y = this.y_init + 100 * noise(this.position_noise_y);

​

    noStroke();

    beginShape();

    for (var angle = 0.0; angle < 360.0; angle = angle + 1.0) {

      var circle_noise = 20 * noise(

        this.param_noise + cos(radians(angle)),

        this.param_noise + sin(radians(angle))

      );

​

      vertex(

        this.x + (this.r + circle_noise) * cos(radians(angle)),

        this.y + (this.r + circle_noise) * sin(radians(angle)));

    }

    endShape();

  }

}

​

​

var spot;

function setup() {

  frameRate(60);

  createCanvas(800, 400);

  spot = new Spot(width / 2, height / 2, 255, 20);

}

​

function draw() {

  background(0);

  spot.draw();

}