isTweening static method
Returns whether the given target
is currently being tweened. This method
iterates through all active tweens and checks whether the target object
matches the tween's target or animatable target.
Returns true if the target is being tweened, false otherwise.
Implementation
static bool isTweening(Object target) {
var t = _first;
while (t != null) {
var next = t._next;
if (t.target == target || t._animatableTarget == target) {
return true;
}
t = next;
}
return false;
}