Method update

external/.d3.js:7553–7557

()

    this._init();
  }
  update() {
    this.delaunay.update();
    this._init();
    return this;
  }
  _init() {
    const {delaunay: {points, hull, triangles}, vectors} = this;
    let bx, by; // lazily computed barycenter of the hull