Discussion :

[magatsu]

bonjour mon fichier se nomme AnimeBall.java

et je n'arrive pas a le faire marcher , je ne l'ai meme pas encore implementer dans une page html. Je n'arrive pas a trouver la solution pouvez vous m'aider svp ?

mon programme simule une balle rouge qui rebondi dans tous les sens et on peu choisir si l'on veut voir son cheminement ou pas.

merci d'avance




import java.awt.*;
import java.awt.image.BufferedImage;
import javax.swing.*;
import javax.swing.JApplet;

public class AnimeBall extends JApplet {
Motivator fullMover;
Motivator fadeMover;

public void init() {
getContentPane().add(getContent());
}

public void start() {
fullMover.start();
fadeMover.start();
}

public void stop() {
fullMover.stop();
fadeMover.stop();
}

private JTabbedPane getContent() {
FullTrail fullTrail = new FullTrail();
fullMover = new Motivator(fullTrail);
FadingTrail fader = new FadingTrail();
fadeMover = new Motivator(fader);
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.addTab("full trail", fullTrail);
tabbedPane.addTab("fading trail", fader);
return tabbedPane;
}
}


public class AnimeBall {
Motivator fullMover;
Motivator fadeMover;

private void start() {
fullMover.start();
fadeMover.start();
}

private JTabbedPane getContent() {
FullTrail fullTrail = new FullTrail();
fullMover = new Motivator(fullTrail);
FadingTrail fader = new FadingTrail();
fadeMover = new Motivator(fader);
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.addTab("full trail", fullTrail);
tabbedPane.addTab("fading trail", fader);
return tabbedPane;
}

public static void main(String[] args) {
AnimeBall trails = new AnimeBall();
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(trails.getContent());
f.setSize(400,400);
f.setLocation(200,200);
f.setVisible(true);
trails.start();
}
}
class FullTrail extends JPanel implements Movable {
BufferedImage offscreen;
Point loc;
int dx = 3;
int dy = 2;
final int D = 30;

protected void paintComponent(Graphics g) {
if(offscreen == null) {
initOffscreen();
}
g.drawImage(offscreen, 0, 0, this);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setPaint(Color.red);
g2.fillOval(loc.x-D/2, loc.y-D/2, D, D);
}

public void moveBall() {
updateOffscreen();
checkBoundries();
loc.x += dx;
loc.y += dy;
repaint();
}

private void checkBoundries() {
if(loc.x - D/2 + dx < 0 || loc.x + D/2 + dx > getWidth())
dx *= -1;
if(loc.y - D/2 + dy < 0 || loc.y + D/2 + dy > getHeight())
dy *= -1;
}

private void initOffscreen() {
int w = getWidth();
int h = getHeight();
loc = new Point(w/2, h/2);
offscreen = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = offscreen.createGraphics();
g2.setColor(UIManager.getColor("Panel.background"));
g2.fillRect(0,0,w,h);
g2.dispose();
}

private void updateOffscreen() {
Graphics g = offscreen.getGraphics();
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setPaint(new Color(240,200,240));
g2.fillOval(loc.x-2, loc.y-2, 4, 4);
g2.dispose();
}
}

class FadingTrail extends JPanel implements Movable {
Point[] trail;
Point loc;
int dx = 2;
int dy = 3;
final int D = 30;

public FadingTrail() {
int trailLength = 20;
trail = new Point[trailLength];
for(int j = 0; j < trail.length; j++) {
trail[j] = new Point();
}
loc = new Point(200,100);
}

protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
Graphics2D copy = (Graphics2D)g.create();
copy.setPaint(new Color(240,200,240));
float alpha = 1f;
float alphaInc = 1f/20.5f;
AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha);
for(int j = 0; j < trail.length; j++) {
copy.setComposite(ac);
copy.fillOval(trail[j].x-2, trail[j].y-2, 4, 4);
alpha -= alphaInc;
ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha);
}
copy.dispose();
g2.setPaint(Color.red);
g2.fillOval(loc.x-D/2, loc.y-D/2, D, D);
}

public void moveBall() {
updateTrail();
checkBoundries();
loc.x += dx;
loc.y += dy;
repaint();
}

private void checkBoundries() {
if(loc.x - D/2 + dx < 0 || loc.x + D/2 + dx > getWidth())
dx *= -1;
if(loc.y - D/2 + dy < 0 || loc.y + D/2 + dy > getHeight())
dy *= -1;
}

private void updateTrail() {
for(int j = trail.length-1; j > 0; j--) {
trail[j].setLocation(trail[j-1].getLocation());
}
double theta = Math.atan2(dy,dx) + Math.PI;
int x = loc.x + (int)((D/2)*Math.cos(theta));
int y = loc.y + (int)((D/2)*Math.sin(theta));
trail[0].setLocation(x, y);
}
}

interface Movable {
public void moveBall();
}

class Motivator implements Runnable {
Movable movable;
Thread thread;
boolean keepMoving;

public Motivator(Movable m) {
movable = m;
}

public void run() {
while(keepMoving) {
try {
Thread.sleep(50);
} catch(InterruptedException e) {
keepMoving = false;
}
movable.moveBall();
}
}

public void start() {
if(!keepMoving) {
keepMoving = true;
thread = new Thread(this);
thread.setPriority(Thread.NORM_PRIORITY);
thread.start();
}
}

public void stop() {
keepMoving = false;
thread.interrupt();
thread = null;
}
}

[krachik]

Bonjour
Utilises les balises CODE(bouton #) dans l'editeur pour encadrert ton code parce que c'est pas tres lisible comme ça

bonjour mon fichier se nomme AnimeBall.java
et je n'arrive pas a le faire marcher , je ne l'ai meme pas encore implementer dans une page html. Je n'arrive pas a trouver la solution pouvez vous m'aider svp ?
mon programme simule une balle rouge qui rebondi dans tous les sens et on peu choisir si l'on veut voir son cheminement ou pas.
merci d'avance

Tu nous dis ce que fait ton programme mais tu ne nous dit pas ce que tu rencontres comme probleme . On ne va pas etre obligé de lire tout le code ou le compiler pour detecter le probleme.
Alors qu'est ce qui ne marche pas ?
@+