using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace AnalogSaat
{
    public partial class Form1 : Form
    {
        Timer t = new Timer();

        int genislik = 300, yukseklik = 300; 
        int saniye = 140, dakika = 110, saat = 80;

        int cx, cy;
        Bitmap bmp;
        Graphics g;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
        bmp = new Bitmap(genislik + 1, yukseklik + 1);

        cx = genislik / 2;
        cy = yukseklik / 2;

        this.BackColor = Color.White;

        t.Interval = 1000; // milisaniye
        t.Tick += new EventHandler(this.t_TikTak);
        t.Start();
        }

        private void t_TikTak(object sender, EventArgs e) 
        { 
        //grafik oluşturma
        g = Graphics.FromImage(bmp);

        //zamanı alma
        int sn = DateTime.Now.Second;
        int dk = DateTime.Now.Minute;
        int s = DateTime.Now.Hour;

        int[] koordinat = new int[2];

        //temizle
        g.Clear(Color.White);

        //daire çizme
        g.DrawEllipse(new Pen(Color.Black, 1f), 0, 0, genislik, yukseklik);

        //figürleri çizme
        g.DrawString("12", new Font("Arial", 12), Brushes.Black, new PointF(140, 2));
        g.DrawString("3", new Font("Arial", 12), Brushes.Black, new PointF(286, 140));
        g.DrawString("6", new Font("Arial", 12), Brushes.Black, new PointF(142, 282));
        g.DrawString("9", new Font("Arial", 12), Brushes.Black, new PointF(0, 140)); 

        //saniye
        koordinat = Kordinat(sn, saniye);
        g.DrawLine(new Pen(Color.Red, 1f), new Point(cx, cy), new Point(koordinat[0], koordinat[1]));

        //dakika
        koordinat = Kordinat(dk, dakika);
        g.DrawLine(new Pen(Color.Black, 2f), new Point(cx, cy), new Point(koordinat[0], koordinat[1]));

        //saat
        koordinat = sKordinat(s%12, dk, saat);
        g.DrawLine(new Pen(Color.Gray, 3f), new Point(cx, cy), new Point(koordinat[0], koordinat[1]));  
    
        // picturebox'a bmp yükleme
        pictureBox1.Image = bmp;

        //zamanı gösterme
        this.Text = "Analog Saat - " + s + ":" + dk + ":" + sn;    
                
        g.Dispose();  
        }

        // dakika ve saniye için koordinat
        private int[] Kordinat(int val, int hlen)
        {
            int[] kordinat = new int[2];
            val *= 6; // her dakika ve saniye 6 derece
            if (val >= 0 && val <= 180)
            {
                kordinat[0] = cx + (int)(hlen * Math.Sin(Math.PI * val / 180));
                kordinat[1] = cy - (int)(hlen * Math.Cos(Math.PI * val / 180));
            }
            else 
            {
                kordinat[0] = cx - (int)(hlen * -Math.Sin(Math.PI * val / 180));
                kordinat[1] = cy - (int)(hlen * Math.Cos(Math.PI * val / 180));
            }
            return kordinat;       
        }

        // saat için koordinat
        private int[] sKordinat(int sval, int dval, int hlen)
        {
            int[] kordinat = new int[2];
            //her saat 30 derece, her dakika 0.5 derece
            int val = (int)((sval*30) +(dval*0.5));
           
            if (val >= 0 && val <= 180)
            {
                kordinat[0] = cx + (int)(hlen * Math.Sin(Math.PI * val / 180));
                kordinat[1] = cy - (int)(hlen * Math.Cos(Math.PI * val / 180));
            }
            else
            {
                kordinat[0] = cx - (int)(hlen * -Math.Sin(Math.PI * val / 180));
                kordinat[1] = cy - (int)(hlen * Math.Cos(Math.PI * val / 180));
            }
            return kordinat;
        }     
    }
}