var ret = {
  get pos() {
    if (!this.transform) return
    return this.transform.pos;
  },
  set pos(x) {
    this.transform.pos = x;
  },
  get angle() {
    return this.transform.angle;
  },
  set angle(x) {
    this.transform.angle = x;
  },
  get scale() {
    return this.transform.scale;
  },
  set scale(x) {
    this.transform.scale = x;
  },
  move(vec) {
    this.pos = this.pos.add(vec);
  },
  rotate(x) {
    this.transform.rotate([0, 0, -1],x);
  },
  grow(vec) {
    if (typeof vec === "number") vec = [vec, vec];
    this.scale = this.scale.map((x, i) => x * vec[i]);
  },
}

return ret