import 'package:flutter/material.dart';

class ResultModel extends ChangeNotifier {
  double _joule = 0;
  String _energyWater = '0';
  String _energyIron = '0';

  double get getJoule => _joule;
  String get getWater => _energyWater;
  String get getIron => _energyIron;

  void changeJoule(double weight, double sSpeed, double eSpeed, double sHeight,
      double eHeight) {
    _joule = (((weight * 9.8 * sHeight) + ((weight * (sSpeed * sSpeed)) / 2)) - ((weight * 9.8 * eHeight) + ((weight * (eSpeed * eSpeed)) / 2))).abs();
    _energyWater = (_joule / (4186 * 80)).toStringAsFixed(2);
    _energyIron = (_joule / (500 * 680)).toStringAsFixed(2);
    notifyListeners();
  }
}