Tree node images changes.. with start and stop button

Question

I create the animator extends JPanel, which start and stop can be controlled with Swing Timer. It works fine with animation control over the panel.
Now, I have a tree with each image at each node.
when the start button clicks, one node image should be animated.
It is implementable. If animation.gif would have worked, I did't have to do this, but animation gif has fatal error with time interval.
any words would be appreciated. Thanks =

Answer 1

Damn !
With version 1.2.1 I think you'll have to create a new class that extends PositionPathInterpolator and add a pause() anr resume() method to it.
i suggest something like:
public class MyPositionPathInterpolator() extends PositionPathInterpolator {
// add some constructors if necessary
private float pauseAlphaValue = 0;
// override computeTransform method
public void computeTransform(float alphaValue, Transform3D transform) {
   float newAlphaValue = alphaValue + pauseAlphaValue; // calculate new alpha value
   if(newAlphaValue > 1)  // modify it if it is out of bounds
      newAlphaValue -= 1;
   else if (newAlphaValue < 0)
      newAlphaValue += 1;
   super.computeTransform(newAlphaValue, transform); // computeTransform with the right alpha value
public void pause() {
   this.setEnable(false); // it won't compute transform anymore
   pauseAlphaValue = this.getAlpha().value(); // retrieve current alphavalue
public void resume() {
   pauseAlphaValue -= this.getAlpha().value();
   this.setEnable(true) // restart computing transform
}Now you invoke pause and resume methods on your myPositionPathInterpolator object when user clicks on the buttons.
Of course it is a trick and it will work only with increasing alpha.
c ya
GnG