private void mainPanelMouseClicked(
java.awt.event.MouseEvent evt) { // GEN-FIRST:event_mainPanelMouseClicked
if (evt.getButton() == MouseEvent.BUTTON1) {
mc.addPoint(evt.getX(), evt.getY(), evt.isShiftDown());
} else if (evt.getButton() == MouseEvent.BUTTON3) {
mc.undo();
}
mainPanel.repaint();
} // GEN-LAST:event_mainPanelMouseClicked
