private void doCurrentMethodStep() {
   switch (type) {
     case 0: // bisectiei
       if (Math.abs(function.evaluate((Cn.lastElement()).x)) < err) {
         complete = true;
         theTimer.stop();
       } else if (function.evaluate((An.lastElement()).x) * function.evaluate((Cn.lastElement()).x)
           < 0) {
         Bn.add(Cn.lastElement());
         Cn.add(new PointDP(((An.lastElement()).x + (Bn.lastElement()).x) / 2, 0.0));
       } else {
         An.add(Cn.lastElement());
         Cn.add(new PointDP(((An.lastElement()).x + (Bn.lastElement()).x) / 2, 0.0));
       }
       break;
     case 1: // coardei
       {
         double evn = function.evaluate((An.lastElement()).x);
         if (Math.abs(evn) < err) {
           complete = true;
           theTimer.stop();
         } else {
           double ev0 = function.evaluate((An.firstElement()).x);
           double newVal = (An.firstElement().x * evn - An.lastElement().x * ev0) / (evn - ev0);
           An.add(new PointDP(newVal, 0.0));
         }
       }
       break;
     case 2: // secantei
       {
         double exn = function.evaluate((An.lastElement()).x);
         if (Math.abs(exn) < err) {
           complete = true;
           theTimer.stop();
         } else {
           double exn1 = function.evaluate((An.elementAt(An.size() - 2)).x);
           double newVal =
               (An.elementAt(An.size() - 2).x * exn - (An.lastElement()).x * exn1) / (exn - exn1);
           An.add(new PointDP(newVal, 0.0));
         }
       }
       break;
     case 3: // newton
       double xn = An.lastElement().x;
       if (Math.abs(function.evaluate(xn)) < err) {
         complete = true;
         theTimer.stop();
       }
       An.add(new PointDP(xn - function.evaluate(xn) / function.evaluate_1(xn), 0.0));
       break;
   }
 }
  private void startCurrentMethodClock(double a, double b) {
    An.clear();
    Bn.clear();
    Cn.clear();

    switch (type) {
      case 0: // bisectiei
        An.add(new PointDP(a, 0.0));
        Bn.add(new PointDP(b, 0.0));
        Cn.add(new PointDP(((An.lastElement()).x + (Bn.lastElement()).x) / 2, 0.0));
        break;
      case 1: // coardei
      case 2: // secantei
        An.add(new PointDP(a, 0.0));
        An.add(new PointDP(b, 0.0));
        break;
      case 3: // newton
        An.add(new PointDP(a, 0.0));
        break;
    }

    theTimer.start();

    repaint();
  }
  public JMovieControlAqua() {
    // Set the background color to the border color of the buttons.
    // This way the toolbar won't look too ugly when the buttons
    // are displayed before they have been loaded completely.
    // setBackground(new Color(118, 118, 118));
    setBackground(Color.WHITE);

    Dimension buttonSize = new Dimension(16, 16);
    GridBagLayout gridbag = new GridBagLayout();
    Insets margin = new Insets(0, 0, 0, 0);
    setLayout(gridbag);
    GridBagConstraints c;

    ResourceBundle labels = ResourceBundle.getBundle("org.monte.media.Labels");
    colorCyclingButton = new JToggleButton();
    colorCyclingButton.setToolTipText(labels.getString("colorCycling.toolTipText"));
    colorCyclingButton.addActionListener(this);
    colorCyclingButton.setPreferredSize(buttonSize);
    colorCyclingButton.setMinimumSize(buttonSize);
    colorCyclingButton.setVisible(false);
    colorCyclingButton.setMargin(margin);
    c = new GridBagConstraints();
    // c.gridx = 0;
    // c.gridy = 0;
    gridbag.setConstraints(colorCyclingButton, c);
    add(colorCyclingButton);

    audioButton = new JToggleButton();
    audioButton.setToolTipText(labels.getString("audio.toolTipText"));
    audioButton.addActionListener(this);
    audioButton.setPreferredSize(buttonSize);
    audioButton.setMinimumSize(buttonSize);
    audioButton.setVisible(false);
    audioButton.setMargin(margin);
    c = new GridBagConstraints();
    // c.gridx = 0;
    // c.gridy = 0;
    gridbag.setConstraints(audioButton, c);
    add(audioButton);

    startButton = new JToggleButton();
    startButton.setToolTipText(labels.getString("play.toolTipText"));
    startButton.addActionListener(this);
    startButton.setPreferredSize(buttonSize);
    startButton.setMinimumSize(buttonSize);
    startButton.setMargin(margin);
    c = new GridBagConstraints();
    // c.gridx = 1;
    // c.gridy = 0;
    gridbag.setConstraints(startButton, c);
    add(startButton);

    slider = new JMovieSliderAqua();
    c = new GridBagConstraints();
    // c.gridx = 2;
    // c.gridy = 0;
    c.fill = GridBagConstraints.HORIZONTAL;
    c.weightx = 1.0;
    gridbag.setConstraints(slider, c);
    add(slider);

    rewindButton = new JButton();
    rewindButton.setToolTipText(labels.getString("previous.toolTipText"));
    rewindButton.setPreferredSize(buttonSize);
    rewindButton.setMinimumSize(buttonSize);
    rewindButton.setMargin(margin);
    c = new GridBagConstraints();
    // c.gridx = 3;
    // c.gridy = 0;

    gridbag.setConstraints(rewindButton, c);
    add(rewindButton);
    rewindButton.addActionListener(this);

    forwardButton = new JButton();
    forwardButton.setToolTipText(labels.getString("next.toolTipText"));
    buttonSize = new Dimension(17, 16);
    forwardButton.setPreferredSize(buttonSize);
    forwardButton.setMinimumSize(buttonSize);
    forwardButton.setMargin(margin);
    c = new GridBagConstraints();
    // c.gridx = 4;
    // c.gridy = 0;
    gridbag.setConstraints(forwardButton, c);
    add(forwardButton);
    forwardButton.addActionListener(this);

    // The spacer is used when the play controls are hidden
    spacer = new JPanel(new BorderLayout());
    spacer.setVisible(false);
    spacer.setPreferredSize(new Dimension(16, 16));
    spacer.setMinimumSize(new Dimension(16, 16));
    spacer.setOpaque(false);
    c = new GridBagConstraints();
    c.fill = GridBagConstraints.HORIZONTAL;
    c.weightx = 1.0;
    gridbag.setConstraints(spacer, c);
    add(spacer);

    Border border =
        new BackdropBorder(
            new ButtonStateBorder(
                new ImageBevelBorder(
                    Images.createImage(getClass(), "images/Player.border.png"),
                    new Insets(1, 1, 1, 1),
                    new Insets(0, 4, 1, 4)),
                new ImageBevelBorder(
                    Images.createImage(getClass(), "images/Player.borderP.png"),
                    new Insets(1, 1, 1, 1),
                    new Insets(0, 4, 1, 4))));

    Border westBorder =
        new BackdropBorder(
            new ButtonStateBorder(
                new ImageBevelBorder(
                    Images.createImage(getClass(), "images/Player.borderWest.png"),
                    new Insets(1, 1, 1, 0),
                    new Insets(0, 4, 1, 4)),
                new ImageBevelBorder(
                    Images.createImage(getClass(), "images/Player.borderWestP.png"),
                    new Insets(1, 1, 1, 0),
                    new Insets(0, 4, 1, 4))));

    startButton.setBorder(westBorder);
    colorCyclingButton.setBorder(westBorder);
    audioButton.setBorder(westBorder);
    rewindButton.setBorder(westBorder);
    forwardButton.setBorder(border);
    startButton.setUI((ButtonUI) CustomButtonUI.createUI(startButton));
    colorCyclingButton.setUI((ButtonUI) CustomButtonUI.createUI(audioButton));
    audioButton.setUI((ButtonUI) CustomButtonUI.createUI(audioButton));
    rewindButton.setUI((ButtonUI) CustomButtonUI.createUI(rewindButton));
    forwardButton.setUI((ButtonUI) CustomButtonUI.createUI(forwardButton));

    colorCyclingButton.setIcon(
        new ImageIcon(Images.createImage(getClass(), "images/PlayerStartColorCycling.png")));
    colorCyclingButton.setSelectedIcon(
        new ImageIcon(Images.createImage(getClass(), "images/PlayerStartColorCycling.png")));
    colorCyclingButton.setDisabledIcon(
        new ImageIcon(
            Images.createImage(getClass(), "images/PlayerStartColorCycling.disabled.png")));
    audioButton.setIcon(
        new ImageIcon(Images.createImage(getClass(), "images/PlayerStartAudio.png")));
    audioButton.setSelectedIcon(
        new ImageIcon(Images.createImage(getClass(), "images/PlayerStopAudio.png")));
    audioButton.setDisabledIcon(
        new ImageIcon(Images.createImage(getClass(), "images/PlayerStartAudio.disabled.png")));
    startButton.setIcon(new ImageIcon(Images.createImage(getClass(), "images/PlayerStart.png")));
    startButton.setSelectedIcon(
        new ImageIcon(Images.createImage(getClass(), "images/PlayerStop.png")));
    startButton.setDisabledIcon(
        new ImageIcon(Images.createImage(getClass(), "images/PlayerStart.disabled.png")));
    rewindButton.setIcon(new ImageIcon(Images.createImage(getClass(), "images/PlayerBack.png")));
    rewindButton.setDisabledIcon(
        new ImageIcon(Images.createImage(getClass(), "images/PlayerBack.disabled.png")));
    forwardButton.setIcon(new ImageIcon(Images.createImage(getClass(), "images/PlayerNext.png")));
    forwardButton.setDisabledIcon(
        new ImageIcon(Images.createImage(getClass(), "images/PlayerNext.disabled.png")));

    // Automatic scrolling
    scrollHandler = new ScrollHandler();
    scrollTimer = new Timer(60, scrollHandler);
    scrollTimer.setInitialDelay(300); // default InitialDelay?
    forwardButton.addMouseListener(scrollHandler);
    rewindButton.addMouseListener(scrollHandler);
  }