public void animateOut(float duration, float delay) {
alpha = t = 1;
NumberProperty p = positionTween.getNumber("t");
p.setEnd(0f);
positionTween.setDuration(duration).delay(delay).play();
}
public void fadeOut(float duration, float delay) {
alpha = t = 1;
NumberProperty p = alphaTween.getNumber("alpha");
p.setEnd(0f);
alphaTween
.setDuration(duration)
.delay(delay) // .onEnd(this, "hide")
.play();
}
public void fadeIn(float duration, float delay) {
alpha = 0;
t = 1;
NumberProperty p = alphaTween.getNumber("alpha");
p.setEnd(1f);
alphaTween
.setDuration(duration)
.delay(delay) // .onStart(this, "show")
.play();
}