setup method

void setup({
  1. required String key,
  2. required AnimationDirection direction(),
})

Implementation

void setup({required String key, required AnimationDirection Function() direction}) {
  final initial = direction();
  assert(initial != AnimationDirection.unchanged, 'initial direction cannot be unchanged');
  _data[key] = _AnimationData(
      direction, initial, initial == AnimationDirection.reverse ? _controller.lowerBound : _controller.upperBound);
}