motor, sequence motion controller

snippet.dart

import 'package:motor/motor.dart';

final controller = SequenceMotionController<ButtonState, Offset>(
   motion: Motion.smoothSpring(),
   vsync: this,
   converter: MotionConverter.offset,
   initialValue: Offset.zero,
 );

 final sequence = MotionSequence.states({
   ButtonState.idle: Offset(0, 0),
   ButtonState.pressed: Offset(0, 5),
 }, motion: Motion.smoothSpring());

 await controller.playSequence(sequence);