image2.setUseMaskManagement(true);
image2.registerSectorClass(AngularSector.class);
randomScaleItem.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
IValueConvertor convertor;
if (randomScaleItem.isSelected()) {
convertor = generateRandomScaleConvertor();
} else {
convertor = null;
}