motor, sequence animation widget

snippet.dart

import 'pacakge:motor/motor.dart';

enum LoadingState { idle, spinning, complete }

SequenceMotionBuilder<LoadingState, double>(
  sequence: .states({
    .idle: 0.0,
    .spinning: 2 * pi,
    .complete: 2 * pi,
  }, motion: .smoothSpring()),
  converter: .single,
  playing: true, // Auto-progress through phases
  currentPhase: currentState, // Or control manually
  onTransition: (transition) => print('Now in transition: $transition'),
  builder: (context, rotation, phase, child) {
    return Transform.rotate(
      angle: rotation,
      child: Icon(
        phase == .complete ? Icons.check : Icons.refresh,
        color: phase == .complete ? Colors.green : Colors.blue,
      ),
    );
  },
)