createTweens method

@override void createTweens()

Build the animations driven by controller. Called from initState after controller has been created.

Implementation

@override
void createTweens() {
  final double peak = -widget.from;
  _offsetY = TweenSequence<double>(<TweenSequenceItem<double>>[
    TweenSequenceItem<double>(
      tween: Tween<double>(begin: 0, end: peak)
          .chain(CurveTween(curve: Curves.easeInOut)),
      weight: 35,
    ),
    TweenSequenceItem<double>(
      tween: Tween<double>(begin: peak, end: 0)
          .chain(CurveTween(curve: widget.curve)),
      weight: 65,
    ),
  ]).animate(controller);
}