onChanging method
Implementation
void onChanging(double d) {
_currentDuration = Duration(milliseconds: d.toInt());
final value = (noiseWidth * d) / maxMillSeconds;
animController.value = value;
_updateUi();
}
void onChanging(double d) {
_currentDuration = Duration(milliseconds: d.toInt());
final value = (noiseWidth * d) / maxMillSeconds;
animController.value = value;
_updateUi();
}