private IEnumerator UpdateMesh()
{
    while (true)
    {
        Vector3 min = Vector3.zero;
        Vector3 max = Vector3.zero;

        var filters = mapping.GetMeshFilters();

        text.text = "";
        text.text += string.Format("Mesh Count  : {0}\n", filters.Count);

        foreach (var filter in filters)
        {

            var mesh = filter.sharedMesh;

            foreach (var vertex in mesh.vertices)
            {
                // ローカル座標をワールド座標に変換する
                var v = filter.transform.TransformPoint(vertex);

                // 最小、最大値を取得
                min.x = Mathf.Min(v.x, min.x);
                min.y = Mathf.Min(v.y, min.y);
                min.z = Mathf.Min(v.z, min.z);

                max.x = Mathf.Max(v.x, max.x);
                max.y = Mathf.Max(v.y, max.y);
                max.z = Mathf.Max(v.z, max.z);
            }
        }

        text.text += string.Format("Min Point  : {0},{1},{2}\n", min.x, min.y, min.z);
        text.text += string.Format("Max Point  : {0},{1},{2}\n", max.x, max.y, max.z);

        cubes[0].transform.localPosition = new Vector3(min.x, min.y, min.z);
        cubes[1].transform.localPosition = new Vector3(min.x, min.y, max.z);
        cubes[2].transform.localPosition = new Vector3(max.x, min.y, max.z);
        cubes[3].transform.localPosition = new Vector3(max.x, min.y, min.z);

        cubes[4].transform.localPosition = new Vector3(min.x, max.y, min.z);
        cubes[5].transform.localPosition = new Vector3(min.x, max.y, max.z);
        cubes[6].transform.localPosition = new Vector3(max.x, max.y, max.z);
        cubes[7].transform.localPosition = new Vector3(max.x, max.y, min.z);

        yield return SaveMesh();

        yield return new WaitForSeconds(1);
    }
}