Need Help In Solving Rotation Image Problem

Question

1 down vote favorite
Hi guys ,
I need your help please. I have spent hours trying to solve it but not working.
I have an image i am rotating when the user clicks on a button. But it is not working.
I would like to see the image rotating gradually till it stops but it doesn't. This it what it does. After i click the button, i don't see it rotating. But when i minimize and maximize the main window, i see the image just rotate(flip) fast like that. It does the rotation but i don't see it as it is doing. It just rotate in a second after minimize and maximize the main window.
I thimk the problem deals with updating the GUI as it is rotating but i don't know how to fix it.
these are the code . Please i have trimed down the code for easy reading.
public class KrusPanel extends JPanel{
     private Image crossingImage;
     private int currentRotationAngle;
     private int imageWidth;
     private int imageHeight;
     private AffineTransform affineTransform;
     private boolean clockwise;
     private static int ROTATE_ANGLE_OFFSET = 2;
     private int xCoordinate;
     private int yCoordinate;
     private javax.swing.Timer timer;
     private void initialize(){
      this.crossingImage = Toolkit.getDefaultToolkit().getImage("images/railCrossing3.JPG");
      this.imageWidth = this.getCrossingImage().getWidth(this);
      this.imageHeight = this.getCrossingImage().getHeight(this);
      this.affineTransform = new AffineTransform();
      this.setCurrentRotationAngle(90);
      timer = new javax.swing.Timer(20, new MoveListener());
public KrusPanel (int x, int y) {
  this.setxCoordinate(x);
  this.setyCoordinate(y);
  this.setPreferredSize(new Dimension(50, 50));
  this.setBackground(Color.red);
  TitledBorder border = BorderFactory.createTitledBorder("image");
  this.setLayout(new FlowLayout());
  this.initialize();
public void paintComponent(Graphics grp){
           Rectangle rect = this.getBounds();
           Graphics2D g2d = (Graphics2D)grp;
           g2d.setColor(Color.BLACK);
           this.getAffineTransform().setToTranslation(this.getxCoordinate(), this.getyCoordinate());
           this.getAffineTransform().rotate(Math.toRadians(this.getCurrentRotationAngle()), this.getCrossingImage().getWidth(this) /2,
                                   this.getCrossingImage().getHeight(this)/2);
          g2d.drawImage(this.getCrossingImage(), this.getAffineTransform(), this);
public void rotateCrossing(){
             this.currentRotationAngle += ROTATE_ANGLE_OFFSET;
             int test = this.currentRotationAngle % 90;
             if(test == 0){
              this.setCurrentRotationAngle(this.currentRotationAngle);
              timer.stop();
         repaint();
  private class MoveListener implements ActionListener {
         public void actionPerformed(ActionEvent e) {
            rotateCrossing();
            repaint();
//  There are getters and setters method here but i have removed them to make the code shorter.
}Next 2 Classes
// I have removed many thins in this class so simplicity. This class is consists of Tiles of BufferdImage and the
// KrusPanel class is at the array position [2][2]. It is the KrusPanel class that i want to rotate.
public class SeePanel extends JPanel{
      private static KrusPanel crossing;
      private void initializeComponents(){
   timer = new javax.swing.Timer(70, new MoveListener());
   this.crossing = new CrossingPanel(261,261);
    public SeePanel(){
  this.initializeComponents();
     public void paintComponent(Graphics comp){
   super.paintComponent(comp);
  comp2D = (Graphics2D)comp;
  BasicStroke pen = new BasicStroke(15.0F, BasicStroke.CAP_BUTT,BasicStroke.JOIN_ROUND);
     comp2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                             RenderingHints.VALUE_ANTIALIAS_ON);
     comp2D.setPaint(Color.red);
     comp2D.setBackground(Color.WHITE);
     comp2D.drawImage(img, 0, 0, null);
     comp2D.draw(this.horizontalRail);
     this.crossing.paintComponent(comp2D);
     this.rob.drawRobot(comp2D);
  public static void rotateCrossing(){
   this.crossing.getTimer().start();
   repaint();
// i tried below code also it didn't work. so i put them in comments
   Runnable rotateCrossing1 = new Runnable(){  // to be removed
         public void run() {
        crossing.getTimer().start();
      SwingUtilities.invokeLater(rotateCrossing1);
// MAIN CLASS
// This is the GUI class which consists of buttons and others
public class MainAPP{
   SeePanel = new SeePanel();
  // Buttons declarations here and others
public MainAPP(){
  // all listener registers here
// Here i call the rotateCrossing() of the SeePanel class but it is not working as i want.
// I would like to see the image rotating gradually till it stops but it doesn't.
//This it what it does. After i click the button, i don't see it rotating. But when i minimize and maximize the main window,
// i see the image  just rotate(flip) fast like that.
public void actionPerformed(ActionEvent e){
    SeePanel.rotateCrossing();                 
    public static main(string[] str){
}Please do help me to fix it.
thanks

Answer 1

kap wrote:
1 down vote favoriteHuh?
..Please i have trimed down the code for easy reading. ..Perhaps I am just lazy, but I don't actually like reading code until I've seen it compile in my editor & run. That is why I will advise that for better help sooner, post an SSCCE. For SSCCEs that use images, either generate an image in the code, or hot-link to an image available on the internet. I offer some [images at my site|http://pscode.org/media/#image] that you can hot-link to.