public void mouseWheelMoved(MouseWheelEvent e) {
int amount = e.getWheelRotation();
Point2D p = new Point2D.Double(e.getPoint().getX(), e.getPoint().getY());
if (amount > 0) zoomOut(p);
if (amount < 0) zoomIn(p);
}
public void mouseWheelMoved(MouseWheelEvent e) {
int notches = e.getWheelRotation();
if ((zoomScale -= 0.05f * notches) < 0.09999f) zoomScale = 0.1f;
repaint();
}