import javax.swing.Timer;
Add an attribute;
Timer timer;
boolean b; // for starting and stoping animation
Add the following code to frame’s constructor.
timer = new Timer(100, new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
// change polygon data
// ...
repaint();
}
});
Override paint(Graphics g)
and draw polygon from the data that was modified by actionPerformed(e)
.
Finally, a button that start/stop animation has the following code in its event handler.
if (b) {
timer.start();
} else {
timer.stop();
}
b = !b;