public void paint(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
AffineTransform trans = new AffineTransform();
int width = getSize().width;
int height = getSize().height;
g2d.setColor(Color.BLACK);
g2d.fillRect(0, 0, width, height);
trans.setTransform(identity);
trans.scale(scale, scale);
g2d.drawImage(image, trans, this);
}
public void mouseDragged(MouseEvent e) {
if (e.getModifiers() == modifiers) {
Point2D pEndScale = e.getPoint();
double scale = pEndScale.distance(viewOrigin) / pStartScale.distance(viewOrigin);
AffineTransform transform = super.plot.getTransform();
transform.setTransform(
transform.getScaleX() * scale,
transform.getShearY(),
transform.getShearX(),
transform.getScaleY() * scale,
transform.getTranslateX() * scale,
transform.getTranslateY() * scale);
pStartScale = pEndScale;
super.plot.setTransform(transform);
}
}