Flutter - How to convert setState to Bloc state management?

I am currently practicing Bloc state management on Flutter and I'm trying to convert some of my code from using setState to using a cubit following Flutter Bloc state management. My code right now is fairly simple, I have a sin and cos chart that I've taken from fl_chart example 10. The chart uses setState in the initState to generate numbers for a FlSpot List and setState to chart a line graph with these numbers.

I am trying to use a cubit instead. In my cubit_state, I have the values that are in setState:

class Graph2State extends Equatable {
  final limitCount;
  final List sinPoints;
  final xValue;
  final step;
  //late Timer timer;

  const Graph2State({
    this.limitCount = 250,
    this.sinPoints = const <FlSpot>[],
    this.xValue = 0,
    this.step = 0.5,
    //this.timer = 
  });

  @override
  List<Object> get props => [sinPoints, xValue, step, ];
}

I'm not sure if this is correct, and I'm not sure where to start on the cubit_cubit portion of the code and where to put BlocBuilder in the fl_chart code.

Can anyone help unstuck me and guide me in the proper direction?