以0,0點為起始點，順時針旋轉向外生成物體，效果如下：

以一個最原始的方法實現，將這個整體分成8個域，座標分析如下：

根據這8個區域的不同特性，進行座標的變化，然後通過協程遞迴生成物體。

以UI生成為例：

/************************************************************
  FileName: Test.cs
  Author:牛國賢       Version :1.0          Date: 2018-09-15
  Description:末零
************************************************************/

using System.Collections;

using UnityEngine;

namespace LastZero
{
    public class Test : MonoBehaviour
    {

        public GameObject canvas;

        private int length = 1;
        private float timeInterval = 1;

        private int num = 0;
        private int x = 0;
        private int y = 0;

        private void Start()
        {
            StartCoroutine(Creat(5, 0.3f));
        }

        /// <summary>
        /// 建立正方形
        /// </summary>
        /// <param name="len">邊長</param>
        /// <param name="time">時間間隔</param>
        /// <returns></returns>
        IEnumerator Creat(int len, float time)
        {
            if (num >= len * len)
            {
                num = 0;
                StopAllCoroutines();
                yield return 0;
            }

            PrefabController.GetPrefab("Image", canvas).GetComponent<RectTransform>().localPosition = new Vector3(x, y, 0) * 15;
            num++;

            if (x == y)
            {
                if (x >= 0)
                    x++;
                else
                    y++;
            }
            else if (x + y == 0)
            {
                if (x > 0)
                    x--;
                else
                    x++;
            }
            else if (x > y)
            {
                if (Mathf.Abs(x) > Mathf.Abs(y))
                    y--;
                else
                    x--;
            }
            else if (x < y)
            {
                if (Mathf.Abs(x) > Mathf.Abs(y))
                    y++;
                else
                    x++;
            }

            yield return new WaitForSeconds(time);
            StartCoroutine(Creat(len, time));
        }
    }
}
 

預製體的獲取：

/************************************************************
  FileName: PrefabController.cs
  Author:末零       Version :1.0          Date: 2018-4-18
  Description:獲取預製體
************************************************************/

using System.Collections;

using UnityEngine;

namespace LastZero
{
    public class PrefabController : MonoBehaviour
    {

        /// <summary>
        /// 獲取預製體，並例項化
        /// </summary>
        /// <param name="name">預製體名字</param>
        /// <returns>例項化出來的物體</returns>
        public static GameObject GetPrefab(string name)
        {
            GameObject prefab = Resources.Load("Prefab/" + name) as GameObject;
            GameObject obj = Instantiate(prefab);
            obj.name = name;
            obj.transform.localPosition = prefab.transform.localPosition;
            obj.transform.localEulerAngles = prefab.transform.localEulerAngles;

            return obj;
        }
        /// <summary>
        /// 獲取預製體，並例項化
        /// </summary>
        /// <param name="name">預製體名字</param>
        /// <param name="parent">父物體</param>
        /// <returns>例項化出來的物體</returns>
        public static GameObject GetPrefab(string name, GameObject parent)
        {
            GameObject prefab = Resources.Load("Prefab/" + name) as GameObject;
            GameObject obj = Instantiate(prefab);
            obj.name = name;
            obj.transform.parent = parent.transform;
            obj.transform.localPosition = prefab.transform.localPosition;
            obj.transform.localEulerAngles = prefab.transform.localEulerAngles;

            return obj;
        }
    }
}