12-09-2009, 10:51 PM
Hello all this is a Little program i did. Note that it uses no images and is all code.
This should provide you with a good understanding of how to animate things in Java. Also it should give you some intro to basic Action Listiners
I know its really messy and i probably didn't follow any naming standards but hey i did this in 1 hour so give me a break.
Main.java this runs as JFrame
mainApplet runs as JApplet, not applet
Displays a Digital clock on the analog clock
Draws the background of the clock Text
Note that this resizes the clock to the size of the window/frame
Draws the minute, second and hour hands
Used with JApplet and JFrame as the one and only JComponent object
Hope this helps somebody.
This should provide you with a good understanding of how to animate things in Java. Also it should give you some intro to basic Action Listiners
I know its really messy and i probably didn't follow any naming standards but hey i did this in 1 hour so give me a break.
Main.java this runs as JFrame
Code:
import javax.swing.JFrame;
import javax.swing.JOptionPane;
/**
*
* @author Scott Adams
*/
public class Main
{
/**
* @param args the command line arguments
*/
public static void main(String[] args)
{
String input;
JFrame frame = new JFrame();
frame.setSize(500, 500);
frame.setTitle("Scott's Clock");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
boolean AMPM=true;
input="";
while (!input.equalsIgnoreCase("AM")&&!input.equalsIgnoreCase("PM"))
{
input = JOptionPane.showInputDialog("AM or PM");
AMPM=input.equalsIgnoreCase("AM");//if clock is AM AMPM=true if PM AMPM=false
}
int hour = 0;
int minute = 60;
int second = 60;
String Time="";
String[] timeArray;
boolean rerun1=false,rerun2=false,rerun3=false;
do
{
input = JOptionPane.showInputDialog("Enter time in hh:mm:ss");
Time=input;
timeArray=Time.split(":");
if (timeArray.length==3)
{
for (int i=1;i<=12;i++)
{
if (timeArray[0].equals(""+i))
{
rerun1=true;
hour=Integer.parseInt(timeArray[0]);
}
}
for (int i=0;i<60;i++)
{
if (timeArray[1].equals(""+i))
{
rerun2=true;
minute=Integer.parseInt(timeArray[1]);
}
else if(i<10)
{
if (timeArray[1].equals("0"+i))
{
rerun2=true;
minute=Integer.parseInt(timeArray[1]);
}
}
}
for (int i=0;i<60;i++)
{
if (timeArray[2].equals(""+i))
{
rerun3=true;
second=Integer.parseInt(timeArray[2]);
}
else if(i<10)
{
if (timeArray[2].equals("0"+i))
{
rerun3=true;
second=Integer.parseInt(timeArray[2]);
}
}
}
}
}while (!rerun1||!rerun2||!rerun3);
myComponents components = new myComponents(AMPM, hour, minute, second);
frame.add(components);
frame.setVisible(true);
}
}mainApplet runs as JApplet, not applet
Code:
import javax.swing.JApplet;
import javax.swing.JOptionPane;
/**
*
* @author Scott Adams
*/
public class mainApplet extends JApplet {
/**
* Initialization method that will be called after the applet is loaded
* into the browser.
*/
public void init() {
boolean AMPM=true;
String input="";
while (!input.equalsIgnoreCase("AM")&&!input.equalsIgnoreCase("PM"))
{
input = JOptionPane.showInputDialog("AM or PM");
AMPM=input.equalsIgnoreCase("AM");//if clock is AM AMPM=true if PM AMPM=false
}
int hour = 0;
int minute = 60;
int second = 60;
String Time="";
String[] timeArray;
boolean rerun1=false,rerun2=false,rerun3=false;
do
{
input = JOptionPane.showInputDialog("Enter time in hh:mm:ss");
Time=input;
timeArray=Time.split(":");
if (timeArray.length==3)
{
for (int i=1;i<=12;i++)
{
if (timeArray[0].equals(""+i))
{
rerun1=true;
hour=Integer.parseInt(timeArray[0]);
}
}
for (int i=0;i<60;i++)
{
if (timeArray[1].equals(""+i))
{
rerun2=true;
minute=Integer.parseInt(timeArray[1]);
}
else if(i<10)
{
if (timeArray[1].equals("0"+i))
{
rerun2=true;
minute=Integer.parseInt(timeArray[1]);
}
}
}
for (int i=0;i<60;i++)
{
if (timeArray[2].equals(""+i))
{
rerun3=true;
second=Integer.parseInt(timeArray[2]);
}
else if(i<10)
{
if (timeArray[2].equals("0"+i))
{
rerun3=true;
second=Integer.parseInt(timeArray[2]);
}
}
}
}
}while (!rerun1||!rerun2||!rerun3);
myComponents components = new myComponents(AMPM, hour, minute, second);
this.add(components);
// TODO start asynchronous download of heavy resources
}
// TODO overwrite start(), stop() and destroy() methods
}Displays a Digital clock on the analog clock
Code:
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
/**
*
* @author Scott Adams
*/
public class DigitalClock
{
String AMPM;
String Sminute, Sseconds;
Font f;
public void go(int radius,int seconds, int minutes,int hours,boolean ampm,Graphics2D g2)
{
if (ampm) AMPM="AM";
else AMPM="PM";
if (minutes<10)
{
Sminute="0"+minutes;
}
else
{
Sminute=minutes+"";
}
if (seconds<10)
{
Sseconds="0"+seconds;
}
else
{
Sseconds=seconds+"";
}
f = new Font("hours",Font.BOLD,(radius/10));
g2.setFont(f);
g2.setColor(Color.CYAN);
if (hours==0)
{
hours=12;
}
g2.drawString(hours+":"+Sminute+":"+Sseconds+" "+AMPM,(radius)-(radius/4),(radius)+(radius/3));
}
}Draws the background of the clock Text
Note that this resizes the clock to the size of the window/frame
Code:
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Point2D;
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Scott Adams
*/
public class clockBackground
{
public Point2D[][] draw(int radius, Graphics2D g2)
{
Ellipse2D clock_body = new Ellipse2D.Double(0,0,radius*2,radius*2);
g2.draw(clock_body);
g2.setColor(Color.blue);
g2.fill(clock_body);
g2.setColor(Color.WHITE);
Point2D[][] returnPoints= new Point2D.Double[3][60];
double o = 0,a = 0,angle;
int xString = 0,yString = 0;
for (int handCount=0; handCount<3; handCount++)
{
for (int count=0;count<60;count++)
{
angle=(count)*6;
if (handCount==0)
{
a=Math.round(Math.cos(Math.toRadians(angle))*radius);
o=Math.round(Math.sin(Math.toRadians(angle))*radius);
}
else if (handCount==1)
{
a=Math.round(Math.cos(Math.toRadians(angle))*((radius*3)/4));
o=Math.round(Math.sin(Math.toRadians(angle))*((radius*3)/4));
}
else if (handCount==2)
{
a=Math.round(Math.cos(Math.toRadians(angle))*(radius/2));
o=Math.round(Math.sin(Math.toRadians(angle))*(radius/2));
}
returnPoints[handCount][count] = new Point2D.Double(radius+o,radius-a);
if ((count%5)==0&&handCount==1)
{
xString=(int)(radius+o);
if (count<30)xString=(int)(radius+o-(o/10));
if (count==0||count==30)
{
xString=(int)(radius-(radius/40));
}
// xString=(int)(radius+o);
yString=(int) (radius-a);
if (count>45||count<15)yString=(int) (radius-a+(a/5));
if (count==15||count==45)
{
yString=(int)(radius+(radius/40));
}
//yString=(int) (radius-a);
Font f = new Font("hours",Font.BOLD,(radius/10));
g2.setFont(f);
if (count/5==0)
{
g2.drawString("12", xString, yString);
}
else
{
g2.drawString(""+(count/5), xString, yString);
}
}
else if(handCount==0)
{
xString=(int)(radius+o);
if (count<=30)xString=(int)(radius+o-(o/30));
// xString=(int)(radius+o);
yString=(int) (radius-a);
if (count>=45||count<=15)yString=(int) (radius-a+(a/30));
//yString=(int) (radius-a);
Font f = new Font("seconds",Font.ITALIC,radius/30);
g2.setFont(f);
g2.drawString(""+(count), xString, yString);
}
}
}
return returnPoints;
}
}Draws the minute, second and hour hands
Code:
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
/**
*
* @author Scott Adams
*/
public class clockHands
{
Point2D center;
double r;
BasicStroke stroke;
public void draw(int radius,Point2D point,Point2D pointm,Point2D pointh,boolean ampm,Graphics2D g2)
{
stroke = new BasicStroke(radius/50,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND);
r= radius * 1.0;//promotes radius to a double
center = new Point2D.Double(r,r);
g2.setStroke(stroke);
Line2D hour_hand= new Line2D.Double(center,pointh);
g2.setColor(Color.black);
g2.draw(hour_hand);
Line2D minute_hand= new Line2D.Double(center,pointm);
g2.setColor(Color.green);
g2.draw(minute_hand);
stroke = new BasicStroke(radius/90,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND);
Line2D second_hand= new Line2D.Double(center,point);
g2.setStroke(stroke);
g2.setColor(Color.red);
g2.draw(second_hand);
}
}Used with JApplet and JFrame as the one and only JComponent object
Code:
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Point2D;
import javax.swing.JComponent;
import javax.swing.Timer;
/**
*
* @author Scott Adams
*/
public class myComponents extends JComponent
{
public boolean AMPM;
public int hour, minutes, seconds;
public int radius=0;
clockBackground bg;
clockHands ckh;
DigitalClock dclk;
public Point2D[][] points;
Timer t;
taskPerformer listen;
public myComponents(boolean Pampm,int Phours,int Pmin,int Psec)
{
AMPM=Pampm;
minutes=Pmin;
hour=(Phours*5);
if (hour>59)
{
hour=0;
}
hour=hour+(minutes/12);//sets the hour hand to the correct position
seconds=Psec;
bg = new clockBackground();
dclk = new DigitalClock();
ckh = new clockHands();
listen = new taskPerformer();
t=new Timer(1000,listen);
t.start();
}
/**
*
* @param g is the graphics object that controls certain aspects of the components
*/
@Override
public void paintComponent(Graphics g)
{
Graphics2D g2= (Graphics2D) g;
if (getWidth()>getHeight())
{
radius=getHeight()/2;
}
else
{
radius=getWidth()/2;
}
points = bg.draw(radius, g2);//draws the background of the clock and returns an array of Point2D that has hand Drawing Info
dclk.go(radius, seconds, minutes, hour/5, AMPM, g2);
ckh.draw(radius,points[0][seconds],points[1][minutes],points[2][hour],AMPM,g2);
}
private class taskPerformer implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
seconds++;
if (seconds>59)
{
seconds=0;
minutes++;
if (minutes>59)
{
minutes=0;
}
if ((minutes)%12==0)
{
hour++;
}
if (hour>59)
{
hour=0;
AMPM=!AMPM;
}
}
repaint();
}
}
}Hope this helps somebody.