/// <summary>
/// 現在のシーンのヒエラルキーの全オブジェクトを取得.
/// </summary>
/// <param name="inactive"></param>
/// <returns></returns>
public static GameObject[] FindAllObjectsInHierarchy(bool inactive = true)
{
var currentScene = EditorSceneManager.GetActiveScene();
var rootObjects = currentScene.GetRootGameObjects();
var gameObjects = rootObjects.SelectMany(x => UnityUtility.GetChildrenAndSelf(x));
return(inactive ? gameObjects.ToArray() : gameObjects.Where(x => x.activeSelf).ToArray());
}