constructor(a, b, strength) {

    let length = dist(a.x, a.y, b.x, b.y);

    super(a, b, length, strength);

    physics.addSpring(this);

  }

​

  show() {

    stroke(0, 50);

    line(this.a.x, this.a.y, this.b.x, this.b.y);

  }

}

​