Heartrate Simulator with visuals added

src/main/java/efi/projekt/gesundheitsassistent/controller/HeartRateController.java

@@ -0,0 +1,38 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/javafx/FXMLController.java to edit this template
+ */
+package efi.projekt.gesundheitsassistent.controller;
+
+import efi.projekt.gesundheitsassistent.viewmodel.HeartRateViewModel;
+import java.net.URL;
+import java.util.ResourceBundle;
+import javafx.fxml.FXML;
+import javafx.fxml.Initializable;
+import javafx.scene.chart.LineChart;
+
+/**
+ * FXML Controller class
+ *
+ * @author naumueller
+ */
+public class HeartRateController implements Initializable {
+
+    @FXML private LineChart<String, Number> heartRateChart;
+    
+    private HeartRateViewModel viewModel;
+    
+    /**
+     * Initializes the controller class.
+     */
+    @Override
+    public void initialize(URL url, ResourceBundle rb) {
+        viewModel = new HeartRateViewModel();
+    }   
+    
+    @FXML
+    private void startSimulation() {
+        heartRateChart.getData().add(viewModel.getHeartRateSeries());
+    }
+    
+}

src/main/java/efi/projekt/gesundheitsassistent/model/HeartRate.java

@@ -0,0 +1,46 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package efi.projekt.gesundheitsassistent.model;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
+/**
+ *
+ * @author naumueller
+ */
+public class HeartRate {
+    private List<Integer> heartRateData = new ArrayList<>();
+    private int time = 0;
+    private Random random = new Random();
+
+    public HeartRate() {}
+
+    /** Neue Herzfrequenz simulieren */
+    public int simulateHeartRate() {
+        int base = 70;
+        int fluctuation = random.nextInt(30) - 10; // -10 bis +20
+        int bpm = base + fluctuation;
+        addData(bpm);
+        return bpm;
+    }
+
+    private void addData(int bpm) {
+        heartRateData.add(bpm);
+        time++;
+        if (heartRateData.size() > 60) {
+            heartRateData.remove(0); // nur letzte 60 Werte behalten
+        }
+    }
+
+    public List<Integer> getHeartRateData() {
+        return heartRateData;
+    }
+
+    public int getTime() {
+        return time;
+    }
+}

src/main/java/efi/projekt/gesundheitsassistent/viewmodel/HeartRateViewModel.java

@@ -0,0 +1,48 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package efi.projekt.gesundheitsassistent.viewmodel;
+
+import efi.projekt.gesundheitsassistent.model.HeartRate;
+import java.util.Random;
+import java.util.Timer;
+import java.util.TimerTask;
+import javafx.application.Platform;
+import javafx.scene.chart.XYChart;
+
+/**
+ *
+ * @author naumueller
+ */
+public class HeartRateViewModel {
+    private HeartRate heartRate;
+    private XYChart.Series<String, Number> heartRateSeries = new XYChart.Series<>();
+    private Timer timer = new Timer(true);
+    
+    public HeartRateViewModel() {
+        this.heartRate = new HeartRate();
+        heartRateSeries.setName("Herzfrequenz");
+        startSimulation();
+    }
+    
+    public XYChart.Series<String, Number> getHeartRateSeries() { return heartRateSeries; }
+    
+    private void startSimulation() {
+        timer.scheduleAtFixedRate(new TimerTask() {
+            @Override
+            public void run() {
+                int bpm = heartRate.simulateHeartRate();
+                int time = heartRate.getTime();
+                Platform.runLater(() -> addHeartRateData(time, bpm));
+            }
+        }, 0, 1000);
+    }
+    
+    private void addHeartRateData(int time, int bpm) {
+        heartRateSeries.getData().add(new XYChart.Data<>(String.valueOf(time),bpm));
+        if (heartRateSeries.getData().size() > 60) {
+            heartRateSeries.getData().remove(0);
+        }
+    }
+}

src/main/resources/efi/projekt/gesundheitsassistent/view/HeartRateDashboard.fxml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.chart.CategoryAxis?>
+<?import javafx.scene.chart.LineChart?>
+<?import javafx.scene.chart.NumberAxis?>
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.layout.VBox?>
+
+
+<VBox maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" spacing="10.0" fx:controller="efi.projekt.gesundheitsassistent.controller.HeartRateController" xmlns="http://javafx.com/javafx/21" xmlns:fx="http://javafx.com/fxml/1">
+   <children>
+      <Label text="Herzfrequenz Dashboard">
+         <VBox.margin>
+            <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
+         </VBox.margin>
+      </Label>
+      <LineChart fx:id="heartRateChart">
+        <xAxis>
+          <CategoryAxis label="Zeit in s" side="BOTTOM" />
+        </xAxis>
+        <yAxis>
+          <NumberAxis label="BPM" side="LEFT" />
+        </yAxis>
+      </LineChart>
+      <Button fx:id="startBtn" mnemonicParsing="false" onMouseClicked="#startSimulation" text="Button" />
+   </children>
+</VBox>