import java.awt.*;
import java.util.Calendar;
import java.util.Date;
import java.applet.Applet;

public class Time extends Applet implements Runnable {
Graphics off_g;
Graphics clock_g;
Image off;
Image clock;
Thread th;
Date date;
Calendar ca;
String s;
String hour;
String minu;
String sec;
String day;
Font font1,font2;
double ra1,ra2,ra3;
double wave_ra;
int w, h;

/*********init********/
	public void init(){
	        w = getSize().width;
		h = getSize().height;
		off = createImage(w,h);
		off_g = off.getGraphics();
		clock = createImage(w,h);
		clock_g = clock.getGraphics();

		th = null;
		font1 = new Font("Dialog",Font.PLAIN,20);
		font2 = new Font("Dialog",Font.PLAIN,10);
		wave_ra = ra1 = ra2 = ra3 = 0;
 }

/*********start*******/
	public void start(){
		if (th == null){
			th = new Thread(this);
			th.start();
		}
	}

/*********run********/
	public void run() {
		while (th != null){
			repaint();

			try{
				th.sleep(200);
			} catch (InterruptedException e){}
		}
	}

/********paint*******/
 public void paint(Graphics g){
		off_g.setColor(Color.black);
		off_g.fillRect(0,0,400,101);
		off_g.setColor(Color.white);
		off_g.setFont(font1);
		ca = Calendar.getInstance();
		
		ra1 = (Math.PI/30)*ca.get(ca.SECOND) - Math.PI/2;
		ra2 = (Math.PI/30)*ca.get(ca.MINUTE) - Math.PI/2;
		ra3 = (Math.PI/6)*ca.get(ca.HOUR) - Math.PI/2 + 
		((Math.PI*2)/(12*60))*ca.get(ca.MINUTE);

		draw_clock(ra1,ra2,ra3);//アナログ時計を描く
		/*
		s = change_toString();//時間、分、秒を文字列にする
		
		day = getDay(ca.get(ca.DAY_OF_WEEK));//曜日を文字列にする

		off_g.setColor(Color.white);
		off_g.drawString(ca.get(ca.YEAR) + "年 " + 
		(ca.get(ca.MONTH) + 1) + "月" + ca.get(ca.DATE) 
		+ "日",10,25);
		off_g.drawString(" " + day + "曜日",100,50);
		off_g.drawString(s,10,50);
		*/

		//off_g.setColor(Color.cyan);
		//off_g.setFont(font2);
		//off_g.drawString("Create by T.Funayama", 0,130);
		g.drawImage(off,0,0,this);
	}

/********draw_clock******/
	void draw_clock(double ra1, double ra2, double ra3){
	        clock_g.setColor(Color.black);
		clock_g.fillRect(0,0,clock.getWidth(null),clock.getHeight(null));
		clock_g.setColor(Color.white);
		clock_g.drawOval(0,10,100,100);//時計の枠
		clock_g.drawLine(50,60,50+(int)(20*Math.cos(ra3)),
		60+(int)(20*Math.sin(ra3)));//短針
		clock_g.setColor(Color.green);
		for (int i = 0; i <= 11; i++){//時間の点
			clock_g.fillOval( (int)(45*Math.sin((Math.PI/6)*i))+50-3,
			(int)(45*Math.cos((Math.PI/6)*i))+60-3,6,6);
		}
		
		clock_g.setColor(Color.yellow);
		clock_g.drawLine(50,60,50+(int)(40*Math.cos(ra2)),
		60+(int)(40*Math.sin(ra2)));

		clock_g.setColor(Color.cyan);
		clock_g.drawLine(50,60,50+(int)(45*Math.cos(ra1)),
		60+(int)(45*Math.sin(ra1)));
		clock_g.drawLine(50,60,50+(int)(13*-Math.cos(ra1)),
		60+(int)(13*-Math.sin(ra1)));
		
		createWaveClock();
		
		off_g.drawImage(clock,0,0,this);
	}

  /************drawWaveClock*************/
  public void createWaveClock(){
    double ra;
    int w = clock.getWidth(null);
    int h = clock.getHeight(null);
    double PI2 = Math.PI*2;

    for (int i = 0; i < w; i++){
      ra = Math.sin(wave_ra + ((PI2/100)*i));
      clock_g.copyArea(i,0,1,h,0,(int)(3*ra));
    }
    if (wave_ra >= (PI2/6)*5)
      wave_ra = 0;
    else
      wave_ra += PI2/6;
  }

/*********getDay***********/
	String getDay(int day_num){
		String day;
		switch (day_num){
			case 1:
				 day = "日";
				break;
			case 2:
				day = "月";
				break;
			case 3:
				day = "火";
				break;
			case 4:
				day = "水";
				break;
			case 5:
				day = "木";
				break;
			case 6:
				day = "金";
				break;
			default:
				day = "土";
		}
		return day;
	}

/*********change_toStirng********/
	String change_toString(){
		if (ca.get(ca.HOUR_OF_DAY) < 10)
			hour = "0" + ca.get(ca.HOUR_OF_DAY);
		else
			hour = Integer.toString(ca.get(ca.HOUR_OF_DAY));

		if (ca.get(ca.MINUTE) < 10)
			minu = "0" + ca.get(ca.MINUTE);
		else
			minu = Integer.toString(ca.get(ca.MINUTE));

		if (ca.get(ca.SECOND) < 10)
			sec = "0" + ca.get(ca.SECOND);
		else
			sec = Integer.toString(ca.get(ca.SECOND));
	
		return hour + ":" + minu + ":" + sec;
	}
/*******update********/
	public void update(Graphics g){
		paint(g);
	}

/*******stop********/
	public void stop(){
		if (th != null)
			th = null;
	}
}