unity圆内随机一个点

/// <summary>
        /// 根据半径随机出园内的点
        /// </summary>
        /// <param name="vRadius"></param>
        /// <returns></returns>
        public static Vector2 GetRandomInCircle(float vRadius)
        {
            var randomValue = Random.Range(0f, 1f);
            var r = Mathf.Sqrt(randomValue) * vRadius;
            randomValue = Random.Range(0f, 1f);
            var theta = 2 * Mathf.PI * randomValue;
            //生成x，y坐标，
            var x = r * Mathf.Cos(theta);
            var y = r * Mathf.Sin(theta);
            return new Vector2(x, y);
        }