// Exercise for week 8 HND 1st year java course...
import java.awt.*;
import java.applet.*;

public class Clock extends Applet
{
	private int x_middle;		// to hold centre of wdith of applet window
	private int y_middle;		// to hold centre of depth of applet window
	private int length;			// the length of the second hand
	private double degrees_to_radians; // used to hold a conversion constant
		
	public void paint(Graphics g)
	{
	   // middle of the canvas,
	   // can be found as follows=>
	   // x_middle = getSize().width / 2;
	   // y_middle = getSize().height/ 2;
	   // length   = getSize().width / 2 - 1;  //Choose a length for the pendulum
	   x_middle = 150;
	   y_middle = 150;
	   length   = 149;
	   degrees_to_radians = 3.14159 / 180.0;
	   // sin and cos work in units
	   // called RADIANS which are different from degrees.
	   // Basically there are 2 times pi of them (or 6.28) in 360 degrees
	   // which is a full circle.
	   // Draw a big circle
	   g.drawOval(0,0,299,299);
      // Step the second hand through 360 degrees in 5 degree steps
      for (int angle = 0 ; angle < 360; angle = angle + 5 )
	   {
	       // Draw second hand 
          g.drawLine(x_middle , y_middle ,
                     x_middle+(int)(Math.cos((double)angle*degrees_to_radians)*length),
                     y_middle+(int)(Math.sin((double)angle*degrees_to_radians)*length));
          // put the delay loop here
     		
	   } // end of for loop
	} // end of paint function
}	// end of 'clock' class