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Clock.zip

C# 으로 아날로그 시계

public partial class Form1 : Form
    {
        int baseX, baseY, clockW, clockH;

        public Form1()
        {
            InitializeComponent();
            baseX = 10; baseY = 10;
            clockW = 300; clockH = 300;

            this.Size = new Size(330, 350);
        }

        protected override void OnPaint(PaintEventArgs pea)
        {
            Graphics grfx = pea.Graphics;
            DrawAnalogClock(grfx);
        }

        private void DrawAnalogClock(Graphics g)
        {
            int center = baseX + clockH / 2;
            long seconds = DateTime.Now.Hour * 60 * 60 + DateTime.Now.Minute * 60 + DateTime.Now.Second; 

            double hourAngle = 2 * Math.PI * (seconds - 15 * 60 * 60) / (12 * 60 * 60);
            double minuteAngle = 2 * Math.PI * (seconds - 15 * 60) / (60 * 60);
            double secondAngle = 2 * Math.PI * (seconds - 15) / 60;

            g.DrawEllipse(new Pen(Brushes.Black, 3), baseX, baseY, clockW, clockH);
            g.DrawLine(new Pen(Brushes.Red, 7), center, center, center + (int)(100 * Math.Cos(hourAngle)), center + (int)(100 * Math.Sin(hourAngle)));
            g.DrawLine(new Pen(Brushes.Green, 5), center, center, center + (int)(130 * Math.Cos(minuteAngle)), center + (int)(130 * Math.Sin(minuteAngle)));
            g.DrawLine(new Pen(Brushes.Blue, 5), center, center, center + (int)(145 * Math.Cos(secondAngle)), center + (int)(145 * Math.Sin(secondAngle)));
            this.Text = "아날로그 시계: " + DateTime.Now.ToShortTimeString();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            Invalidate();
        }

    }