求一段画钟表指针的代码,C#语言

g = e.Graphics;
//绘图模式默认为粗糙模式，将会出现锯齿！
g.SmoothingMode = SmoothingMode.AntiAlias;
g.SmoothingMode = SmoothingMode.HighQuality;
g.TranslateTransform(w / 2, h / 2);//重新设置坐标原点
//获得系统时间值
int second = DateTime.Now.Second;
int minute = DateTime.Now.Minute;
int hour = DateTime.Now.Hour;
/*------------------------------------------------------------------------------------
每秒偏移度，秒针偏移=当前秒*6
每分偏移读，分针偏移= 当前分*6+当前秒*（/60）
每小时偏移读，时针偏移= 当前时*30+当前分*（/60）+当前秒*（/60/60）
--------------------------------------------------------------------------------------*/

//绘秒针
pen = new Pen(Color.FromArgb(121, 151, 188), 1);
pen.EndCap = LineCap.RoundAnchor;
g.RotateTransform(6 * second);
float y = (float)((-1