public void setScale(double scale) {
Rectangle visible = internal.getVisibleRect();
double factor = scale / this.scale;
this.scale = Math.min(4, scale);
redraw();
visible =
new Rectangle(
(int) (visible.x * factor),
(int) (visible.y * factor),
(int) (visible.width * factor),
(int) (visible.height * factor));
internal.scrollRectToVisible(visible);
observable.setChanged();
observable.notifyObservers(this);
}
// @Override
public void run() {
try {
keepRunning = true;
boolean isRising = true;
while (keepRunning) {
Thread.sleep(10); // decrease or remove to speed up the refresh rate.
phase++;
if (sinAmp >= MAX_AMP_SEED) {
isRising = false;
} else if (sinAmp <= MIN_AMP_SEED) {
isRising = true;
}
if (isRising) {
sinAmp += AMP_STEP;
} else {
sinAmp -= AMP_STEP;
}
notifier.notifyObservers();
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public void removeObserver(Observer observer) {
notifier.deleteObserver(observer);
}
public void addObserver(Observer observer) {
notifier.addObserver(observer);
}
@Override
public void update(MyObservable t, Object arg) {
System.out.println("BObserver" + "---->event:" + arg + ";data=" + t.getData());
}
@Override
public void notifyObservers() {
observable.notifyObservers();
}
@Override
public void registerObserver(MyObserver observer) {
observable.registerObserver(observer);
}
