constructor(x, y, index){

    this.x = x;

    this.y = y;

    this.index = index;

    this.xoff = 0.01;

    this.col = color(cols[this.index % cols.length]);

  }

  update(){

    this.xoff = this.xoff + 0.001;

    noStroke();

    fill(this.col);

    ellipse(this.x, this.y, -5 + noise(this.x / 100, this.y / 100, this.xoff) * 30);

    this.x = (noise(this.index, this.xoff)) * width;

    this.y = (noise(this.index / 100, this.xoff)) * height;

  }

}