Box warp doesn't treat subpaths as unified object

It would make sense that a box warp on a group of paths would treat the group as a single object and keep all subpaths sized and positioned relative to each other. In practice, this operation works on each subpath as separate objects, which isn't very useful.

I'm not sure conceptually where you should be able to distinguish between the two operations, but performing it on a layer containing multiple subpaths seems like the trivial scenario when the earlier behavior would be desired. Maybe it's as simple as a boolean input e.g. "Combined" on the box warp node.

ファイル、テスト、エントリーポイントは指定されていません。まず、複数のサブパスを含むレイヤーで box warp を再現し、その後、操作が統一した扱いと個別の扱いをどのように区別すべきかを判断します。選択した動作によってサブパスの相対的なサイズと位置が維持されれば完了です。

索引モデルが issue の本文から書いたものです。