getPolygon(vertices) {
    let polygon = [];

    for (let i = 0; i < this.members.length; i++) {
      polygon.push(vertices[this.members[i]].position);
    }

    return polygon;
  }
Gets the polygon representation (an array of the ring-members positional vectors) of this ring.

@param {Vertex[]} vertices An array of vertices representing the current molecule.
@returns {Vector2[]} An array of the positional vectors of the ring members.