dai un'occhiata a questo
/*<applet code=Animation width=67 height=48>
<param name=img value=horse.gif>
<param name=rows value=3>
<param name=cols value=4>
<param name=sequence value=0,1,2,3,4,5,6,7,8,9,10,11>
<param name=framerate value=15>
</applet>
import java.applet.*;
import java.awt.*;
import java.awt.image.*;
import java.util.*;
public class Animation extends Applet implements Runnable {
Image cell[];
final int MAXSEQ = 64;
int sequence[];
int nseq;
int idx;
int framerate;
boolean stopFlag;
private int intDef(String s, int def) {
int n = def;
if (s != null)
try {
n = Integer.parseInt(s);
} catch (NumberFormatException e) {
System.out.println("Number Format Exception");
}
return n;
}
public void init() {
framerate = intDef(getParameter("framerate"), 5);
int tilex = intDef(getParameter("cols"), 1);
int tiley = intDef(getParameter("rows"), 1);
cell = new Image[tilex*tiley];
StringTokenizer st = new
StringTokenizer(getParameter("sequence"), ",");
sequence = new int[MAXSEQ];
nseq = 0;
while(st.hasMoreTokens() && nseq < MAXSEQ) {
sequence[nseq] = intDef(st.nextToken(), 0);
nseq++;
}
try {
Image img = getImage(getDocumentBase(), getParameter("img"));
MediaTracker t = new MediaTracker(this);
t.addImage(img, 0);
t.waitForID(0);
int iw = img.getWidth(null);
int ih = img.getHeight(null);
int tw = iw / tilex;
int th = ih / tiley;
CropImageFilter f;
FilteredImageSource fis;
for (int y=0; y<tiley; y++) {
for (int x=0; x<tilex; x++) {
f = new CropImageFilter(tw*x, th*y, tw, th);
fis = new FilteredImageSource(img.getSource(), f);
int i = y*tilex+x;
cell[i] = createImage(fis);
t.addImage(cell[i], i);
}
}
t.waitForAll();
} catch (InterruptedException e) {
System.out.println("Image Load Interrupted");
}
}
public void update(Graphics g) { }
public void paint(Graphics g) {
g.drawImage(cell[sequence[idx]], 0, 0, null);
}
Thread t;
public void start() {
t = new Thread(this);
stopFlag = false;
t.start();
}
public void stop() {
stopFlag = true;
}
public void run() {
idx = 0;
while (true) {
paint(getGraphics());
idx = (idx + 1) % nseq;
try {
Thread.sleep(1000/framerate);
} catch (InterruptedException e) {
System.out.println("Animation Interrupted");
return;
}
if(stopFlag)
return;
}
}
}