Unity获取到线段的长度

   /// <summary>  
    /// 获取线段的长度 
    /// </summary> 
    /// <param name="startPoint">线段起点</param>    
    /// <param name="endPoint">线段终点</param>    
    /// <returns></returns>    
    public static float GetLineLength(Vector3 startPoint, Vector3 endPoint)
    {
    
    
        float linelength = 0;
        float xdis = Mathf.Pow((startPoint.x - endPoint.x), 2);
        float zdis = Mathf.Pow((startPoint.z - endPoint.z), 2);
        linelength = Mathf.Sqrt((xdis + zdis));
        return linelength;
    }