import java.util.*;
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class Clock2 extends Applet implements Runnable {
Thread timer = null;
int lastxs=0;
int lastys=0;
int lastxm=0;
int lastym=0;
int lastxh=0;
int lastyh=0;
Date dummy = new Date();
Font F = new Font("Arial", Font.PLAIN, 14);
Date dat = null;
public void init() {
int x,y;
}
public void circle(int x0, int y0, int r, Graphics g) {
int x,y;
float d;
x=0;
y=r;
d=5/4-r;
while (y>x){
if (d<0) {
d=d+2*x+3;
x++;
}
else {
d=d+2*(x-y)+5;
x++;
y--;
}
}
}
// Paint is the main part of the program
public void paint(Graphics g) {
int xh, yh, xm, ym, xs, ys, s, m, h, xcenter, ycenter;
dat = new Date();
s = dat.getSeconds();
m = dat.getMinutes();
h = dat.getHours();
xcenter=80;
ycenter=55;
// a= s* pi/2 - pi/2 (to switch 0,0 from 3:00 to 12:00)
// x = r(cos a) + xcenter, y = r(sin a) + ycenter
xs = (int)(Math.cos(s * 3.14f/30 - 3.14f/2) * 45 + xcenter);
ys = (int)(Math.sin(s * 3.14f/30 - 3.14f/2) * 45 + ycenter);
xm = (int)(Math.cos(m * 3.14f/30 - 3.14f/2) * 40 + xcenter);
ym = (int)(Math.sin(m * 3.14f/30 - 3.14f/2) * 40 + ycenter);
xh = (int)(Math.cos((h*30 + m/2) * 3.14f/180 - 3.14f/2) * 30 + xcenter);
yh = (int)(Math.sin((h*30 + m/2) * 3.14f/180 - 3.14f/2) * 30 + ycenter);
// Draw the circle and numbers
g.setColor(Color.black);
g.fillRect(25,1,110,105);
g.setFont(F);
g.setColor(Color.blue);
circle(xcenter,ycenter,50,g);
g.setColor(Color.blue);
g.drawString("IX",xcenter-45,ycenter+3);
g.drawString("III",xcenter+40,ycenter+3);
g.drawString("XII",xcenter-5,ycenter-37);
g.drawString("VI",xcenter-3,ycenter+45);
// Erase if necessary, and redraw
g.setColor(getBackground());
if (xs != lastxs || ys != lastys) {
g.drawLine(xcenter, ycenter, lastxs, lastys);
}
if (xm != lastxm || ym != lastym) {
g.drawLine(xcenter, ycenter-1, lastxm, lastym);
g.drawLine(xcenter-1, ycenter, lastxm, lastym); }
if (xh != lastxh || yh != lastyh) {
g.drawLine(xcenter, ycenter-1, lastxh, lastyh);
g.drawLine(xcenter-1, ycenter, lastxh, lastyh); }
g.setColor(Color.blue);
g.drawLine(xcenter, ycenter, xs, ys);
g.setColor(Color.blue);
g.drawLine(xcenter, ycenter-1, xm, ym);
g.drawLine(xcenter-1, ycenter, xm, ym);
g.drawLine(xcenter, ycenter-1, xh, yh);
g.drawLine(xcenter-1, ycenter, xh, yh);
lastxs=xs; lastys=ys;
lastxm=xm; lastym=ym;
lastxh=xh; lastyh=yh;
dat=null;
}
public void start() {
if(timer == null)
{
timer = new Thread(this);
timer.start();
}
}
public void stop() {
timer = null;
}
public void run() {
while (timer != null) {
try {Thread.sleep(100);} catch (InterruptedException e){}
repaint();
}
timer = null;
}
public void update(Graphics g) {
paint(g);
}
}