477 lines
17 KiB
Dart
477 lines
17 KiB
Dart
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:provider/provider.dart';
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void main() {
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runApp(const EnergyProviderApp());
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}
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class KineticModel extends ChangeNotifier{
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String startheight = "";
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String endheight = "";
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String startspeed="";
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String endspeed="";
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String weight="";
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KineticModel(){
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startspeed;
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endspeed;
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weight;
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}
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void setStartspeed(String input){
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startspeed=input;
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}
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void setEndspeed(String input){
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endspeed=input;
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}
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void setWeight(String input){
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weight=input;
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}
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void update(){
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notifyListeners();
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}
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}
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class PotentialModel extends ChangeNotifier{
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String startheight = "";
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String endheight = "";
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String weight="";
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PotentialModel(){
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startheight;
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endheight;
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weight;
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}
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void setStartheight(String input){
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startheight=input;
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}
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void setEndheight(String input){
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endheight=input;
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}
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void setWeight(String input){
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weight=input;
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}
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void update(){
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notifyListeners();
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}
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}
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class PotentialCalc extends StatelessWidget{
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PotentialCalc({super.key});
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final _formKey = GlobalKey<FormState>();
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double calcPotentialE(double mass, double startheight, double endheight){
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double height = (startheight-endheight).abs();
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return mass * 9.81 * height;
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}
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double calcWater(double e){
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return e/(80*4190);
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}
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double calcIron(double e){
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return e/(460*680);
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}
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double joule=0.0;
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double water=0.0;
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double iron=0.0;
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text("Potentielle Energie"),
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),
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body: ChangeNotifierProvider(
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create: (_) => PotentialModel(),
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child: Center(
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child: Column(
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children: [
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Consumer<PotentialModel>(
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builder: (context, model, child) => Column(
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children: [
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Center(
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child: Form(
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key: _formKey,
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child: Column(
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children: <Widget>[
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const Padding(
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padding: const EdgeInsets.all(8.0),
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child: const Text("Geben Sie Ihre Werte ein"),
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),
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//Anfangsgeschwindigkeit
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 40, right: 8, bottom: 0),
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child: TextFormField(
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onSaved: (String? val) {
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model.setStartheight(val!);
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},
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keyboardType: TextInputType.numberWithOptions(decimal: true),
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inputFormatters: [
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FilteringTextInputFormatter.allow(RegExp(r"^((\d+)?(\.)?(\d{1,2})?)"))
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],
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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labelText: "Anfangshöhe in Meter",
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hintText: "Geben Sie eine Dezimalzahl an",
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),
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),
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),
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//Endgeschwindigkeit
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 8, right: 8, bottom: 0),
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child: TextFormField(
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onSaved: (String? val) {
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model.setEndheight(val!);
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},
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keyboardType: TextInputType.numberWithOptions(decimal: true),
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inputFormatters: [
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FilteringTextInputFormatter.allow(RegExp(r"^((\d+)?(\.)?(\d{1,2})?)"))
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],
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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labelText: "Endhöhe in Meter",
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hintText: "Geben Sie eine Dezimalzahl an",
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),
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),
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),
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// Gewicht des Objekts
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 40, right: 8, bottom: 0),
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child: TextFormField(
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onSaved: (String? val) {
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model.setWeight(val!);
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},
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keyboardType: TextInputType.numberWithOptions(decimal: true),
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inputFormatters: [
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FilteringTextInputFormatter.allow(RegExp(r"^((\d+)?(\.)?(\d{1,2})?)"))
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],
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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labelText: "Gewicht in Kilogramm",
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hintText: "Geben Sie eine Dezimalzahl an",
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),
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),
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),
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IconButton(
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onPressed: () {
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if(_formKey.currentState!.validate()){
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_formKey.currentState!.save();
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}
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joule=calcPotentialE(double.parse(model.weight), double.parse(model.startheight), double.parse(model.endheight));
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water=calcWater(joule);
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iron=calcIron(joule);
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model.update();
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},
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icon: const Icon(Icons.calculate, color: Colors.blue),
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tooltip: 'Berechne',
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),
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//Divider
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const Divider(
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height: 40,
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thickness: 2,
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color: Colors.black,
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),
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const Text("Ergebnis:"),
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 16, right: 8, bottom: 0),
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child: Text(
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joule.toStringAsFixed(2) +"Joule"
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),
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),
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 16, right: 8, bottom: 0),
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child: Text(
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"Damit kann man "+ water.toStringAsFixed(2) +"l Wasser zum Kochen bringen"
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),
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),
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 8, right: 8, bottom: 0),
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child: Text(
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"Damit kann man "+ iron.toStringAsFixed(2) +"kg Eisen zum Glühen bringen"
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),
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),
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],
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),
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),
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),
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],
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)
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),
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],
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),
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),
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),
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//TextButton(child: const Text("Berechne"),onPressed: () { },)
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);
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}
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}
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class KineticCalc extends StatelessWidget{
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KineticCalc({super.key});
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final _formKey = GlobalKey<FormState>();
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double calcKineticE(double mass, double startspeed, double endspeed){
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double speed = (startspeed-endspeed).abs();
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return mass * speed * speed/2;
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}
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double calcWater(double e){
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return (e/(80*4190));
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}
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double calcIron(double e){
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return e/(460*680);
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}
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double joule=0.0;
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double water=0;
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double iron=0.0;
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text("Kinetische Energie"),
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),
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body: ChangeNotifierProvider(
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create: (_) => KineticModel(),
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child: Center(
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child: Column(
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children: [
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Consumer<KineticModel>(
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builder: (context, model, child) => Column(
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children: [
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Center(
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child: Form(
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key: _formKey,
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child: Column(
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children: <Widget>[
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Padding(
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padding: const EdgeInsets.all(8.0),
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child: const Text("Geben Sie Ihre Werte ein"),
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),
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//Anfangsgeschwindigkeit
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 40, right: 8, bottom: 0),
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child: TextFormField(
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onSaved: (String? val) {
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model.setStartspeed(val!);
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},
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keyboardType: TextInputType.numberWithOptions(decimal: true),
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inputFormatters: [
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FilteringTextInputFormatter.allow(RegExp(r"^((\d+)?(\.)?(\d{1,2})?)"))
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],
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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labelText: "Anfangsgeschwindigkeit in Meter/Sekunde",
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hintText: "Geben Sie eine Dezimalzahl an",
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),
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),
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),
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//Endgeschwindigkeit
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 8, right: 8, bottom: 0),
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child: TextFormField(
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onSaved: (String? val) {
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model.setEndspeed(val!);
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},
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keyboardType: TextInputType.numberWithOptions(decimal: true),
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inputFormatters: [
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FilteringTextInputFormatter.allow(RegExp(r"^((\d+)?(\.)?(\d{1,2})?)"))
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],
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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labelText: "Endgeschwindigkeit in Meter/Sekunde",
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hintText: "Geben Sie eine Dezimalzahl an",
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),
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),
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),
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// Gewicht des Objekts
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 40, right: 8, bottom: 0),
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child: TextFormField(
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onSaved: (String? val) {
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model.setWeight(val!);
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},
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keyboardType: TextInputType.numberWithOptions(decimal: true),
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inputFormatters: [
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FilteringTextInputFormatter.allow(RegExp(r"^((\d+)?(\.)?(\d{1,2})?)"))
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],
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decoration: const InputDecoration(
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border: OutlineInputBorder(),
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labelText: "Gewicht in Kilogramm",
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hintText: "Geben Sie eine Dezimalzahl an",
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),
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),
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),
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IconButton(
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onPressed: () {
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if(_formKey.currentState!.validate()){
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_formKey.currentState!.save();
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}
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joule=calcKineticE(double.parse(model.weight), double.parse(model.startspeed), double.parse(model.endspeed));
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water=calcWater(joule);
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iron=calcIron(joule);
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model.update();
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},
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icon: const Icon(Icons.calculate, color: Colors.blue),
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tooltip: 'Berechne',
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),
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//Divider
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const Divider(
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height: 40,
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thickness: 2,
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color: Colors.black,
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),
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const Text("Ergebnis:"),
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 16, right: 8, bottom: 0),
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child: Text(
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joule.toStringAsFixed(2)+" Joule"
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),
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),
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 16, right: 8, bottom: 0),
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child: Text(
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"Damit kann man "+ water.toStringAsFixed(2) +"l Wasser zum Kochen bringen"
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),
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),
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Padding(
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padding: const EdgeInsets.only(left: 8, top: 8, right: 8, bottom: 0),
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child: Text(
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"Damit kann man "+ iron.toStringAsFixed(2) +"kg Eisen zum Glühen bringen"
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),
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),
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],
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),
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),
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),
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],
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)
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),
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],
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),
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),
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),
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//TextButton(child: const Text("Berechne"),onPressed: () { },)
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);
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}
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}
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|
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class EnergyProviderApp extends StatelessWidget {
|
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|
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const EnergyProviderApp({super.key});
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|
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// This widget is the root of your application.
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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title: 'Energiebilanz',
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theme: ThemeData(
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primarySwatch: Colors.blue,
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|
),
|
||
|
|
home: const EnergyApp(title: 'Energiebilanz Rechner'),
|
||
|
|
routes: {
|
||
|
|
"/kinetic": (context) => KineticCalc(),
|
||
|
|
"/potential": (context) => PotentialCalc(),
|
||
|
|
},
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
class EnergyApp extends StatefulWidget {
|
||
|
|
const EnergyApp({super.key, required this.title});
|
||
|
|
|
||
|
|
final String title;
|
||
|
|
|
||
|
|
@override
|
||
|
|
State<EnergyApp> createState() => _EnergyAppState();
|
||
|
|
}
|
||
|
|
|
||
|
|
class _EnergyAppState extends State<EnergyApp> {
|
||
|
|
|
||
|
|
double calcPotentialE(double mass, double startheight, double endheight){
|
||
|
|
return mass * 9.81 * (startheight - endheight).abs();
|
||
|
|
}
|
||
|
|
|
||
|
|
double calcKineticE(double mass, double startspeed, double endspeed){
|
||
|
|
double speed = (startspeed-endspeed).abs();
|
||
|
|
return mass * speed * speed;
|
||
|
|
}
|
||
|
|
|
||
|
|
@override
|
||
|
|
Widget build(BuildContext context) {
|
||
|
|
return Scaffold(
|
||
|
|
appBar: AppBar(
|
||
|
|
title: Text(widget.title),
|
||
|
|
),
|
||
|
|
body: Center(
|
||
|
|
child: Column(
|
||
|
|
children: [
|
||
|
|
Padding(
|
||
|
|
padding: const EdgeInsets.all(8.0),
|
||
|
|
child: ElevatedButton(
|
||
|
|
onPressed: () {Navigator.pushNamed(context,"/kinetic");
|
||
|
|
},
|
||
|
|
child: const Text("Kinetische Energie berechnen"),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
Padding(
|
||
|
|
padding: const EdgeInsets.all(8.0),
|
||
|
|
child: ElevatedButton(
|
||
|
|
onPressed: () => {Navigator.pushNamed(context, "/potential")},
|
||
|
|
child: const Text("Potentielle Energie berechnen"),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
],
|
||
|
|
),
|
||
|
|
),
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|