前言 我看网上大多都是根据父物体来计算子物体的中心点  没有找到计算数组的中心点

先上代码  有错误再修改，这个代码也是网上的，稍微修改一下 unity 就可以用

 /// <summary>  /// 获取中心点坐标  /// </summary>  /// <param name="p"></param>  /// <returns></returns> public Vector2 GetCenterPoint(Vector3[] p){Vector2 ptCenter = new Vector3(0, 0);int i, j;double ai, atmp = 0, xtmp = 0, ytmp = 0;if (p == null)throw new ArgumentNullException("获取多边形中心点坐标时传入的参数为空。");if (p.Length == 1)return p[0];if ((p.Length == 2) || (p.Length == 3 && p[0] == p[2]))return new Vector3((p[1].x + p[0].x) / 2, (p[1].y + p[0].y) / 2);int n = p.Length;for (i = n - 1, j = 0; j < n; i = j, j++){ai = p[i].x * p[j].y - p[j].x * p[i].y;atmp += ai;xtmp += (p[j].x + p[i].x) * ai;ytmp += (p[j].y + p[i].y) * ai;}if (atmp != 0){ptCenter.x = Convert.ToInt32(xtmp / (3 * atmp));ptCenter.y = Convert.ToInt32(ytmp / (3 * atmp));}return ptCenter;}