My Blog

Bubbles.Java

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Ellipse2D;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;


public class Bubbles extends JPanel implements ActionListener {


private static Color colors[] = {
Color.blue, Color.cyan, Color.green,
Color.magenta, Color.orange, Color.pink,
Color.red, Color.yellow, Color.lightGray, Color.white
};


private Ellipse2D.Float[] ellipses;
private double esize[];
private float estroke[];
private double maxSize = 0;
private boolean initialize = true;

Timer timer;
ActionListener updateProBar;


public Bubbles() {

setBackground(Color.black);
ellipses = new Ellipse2D.Float[25];
esize = new double[ellipses.length];
estroke = new float[ellipses.length];

for (int i = 0; i < ellipses.length; i++) {
ellipses[i] = new Ellipse2D.Float();
getRandomXY(i, 20 * Math.random(), 200, 200);
}

timer = new Timer(20, this);
timer.setInitialDelay(190);
timer.start();
}


public void getRandomXY(int i, double size, int w, int h) {

esize[i] = size;
estroke[i] = 1.0f;
double x = Math.random() * (w - (maxSize / 2));
double y = Math.random() * (h - (maxSize / 2));
ellipses[i].setFrame(x, y, size, size);
}


public void reset(int w, int h) {

maxSize = w / 10;
for (int i = 0; i < ellipses.length; i++) {
getRandomXY(i, maxSize * Math.random(), w, h);
}
}


public void step(int w, int h) {

for (int i = 0; i < ellipses.length; i++) {

estroke[i] += 0.025f;
esize[i]++;

if (esize[i] > maxSize) {
getRandomXY(i, 1, w, h);

} else {
ellipses[i].setFrame(ellipses[i].getX(), ellipses[i].getY(),
esize[i], esize[i]);
}
}
}


public void render(int w, int h, Graphics2D g2) {

for (int i = 0; i < ellipses.length; i++) {
g2.setColor(colors[i % colors.length]);
g2.setStroke(new BasicStroke(estroke[i]));
g2.draw(ellipses[i]);
}
}


public void paint(Graphics g) {

super.paintComponent(g);

Graphics2D g2 = (Graphics2D)g;

RenderingHints rh =
new RenderingHints(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);

rh.put(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);

g2.setRenderingHints(rh);
Dimension size = getSize();

if (initialize) {
reset(size.width, size.height);
initialize = false;
}

this.step(size.width, size.height);

render(size.width, size.height, g2);

}


public void actionPerformed(ActionEvent e) {
repaint();
}

public static void main(String[] args) {

JFrame frame = new JFrame("Bubbles By Mohammad Al amin");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new Bubbles());
frame.setSize(350, 250);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}