Function EC

resources/vega.min.js:22882–22884

(t, e, n)

    ((e.c -= r), (e.s += n), (t.c += r), (e.z += n), (e.m += n));
  }
  function EC(t, e, n) {
    return t.a.parent === e.parent ? t.a : n;
  }
  function DC(t, e) {
    ((this._ = t),
      (this.parent = null),