添加数据产生C++类

Author: RookieLinux

example/src/component/DataGenerator.cpp

@@ -0,0 +1,65 @@
+//
+// Created by rookie on 2025/12/3.
+//
+
+#include "DataGenerator.h"
+
+
+QVector<double> DataGenerator::xData() const {
+    QReadLocker locker(&m_lock);
+    return m_xData;
+}
+
+QVector<double> DataGenerator::yData() const {
+    QReadLocker locker(&m_lock);
+    return m_yData;
+}
+
+bool DataGenerator::isRunning() const {
+    return m_timer->isActive();
+}
+
+Q_INVOKABLE void DataGenerator::start() {
+    if (!m_timer->isActive()) {
+      m_timer->start();
+      emit runningChanged(true);
+      generateData();
+    }
+}
+
+Q_INVOKABLE void DataGenerator::stop() {
+    if (m_timer->isActive()) {
+      m_timer->stop();
+      emit runningChanged(false);
+    }
+}
+
+Q_INVOKABLE void DataGenerator::setParameters(double sineFreq, double sineAmp, double noiseAmp) {
+    QWriteLocker locker(&m_lock);
+    m_sineFrequency = sineFreq;
+    m_sineAmplitude = sineAmp;
+    m_noiseAmplitude = noiseAmp;
+}
+
+void DataGenerator::generateData() {
+    QWriteLocker locker(&m_lock);
+
+    m_xData.clear();
+    m_yData.clear();
+
+    double dt = 1.0 / m_sampleRate;
+
+    for (int i = 0; i < m_sampleRate; ++i) {
+        double t = i * dt;
+
+        double sineValue = m_sineAmplitude * std::sin(2 * M_PI * m_sineFrequency * t);
+
+        double randomValue = (QRandomGenerator::global()->generateDouble() - 0.5) * 2.0;
+        double noiseValue = m_noiseAmplitude * randomValue;//-0.03~0.03
+
+        m_xData.append(t);
+        m_yData.append(sineValue + noiseValue);
+    }
+
+    emit dataUpdated();
+}

example/src/component/DataGenerator.h

@@ -0,0 +1,73 @@
+//
+// Created by rookie on 2025/12/3.
+//
+
+#ifndef DATAGENERATOR_H
+#define DATAGENERATOR_H
+
+
+#include <QObject>
+#include <QVector>
+#include <QTimer>
+#include <QRandomGenerator>
+#include <QReadWriteLock>
+#include <cmath>
+#include <QDateTime>
+
+class DataGenerator : public QObject {
+    Q_OBJECT
+    Q_PROPERTY(QVector<double> xData READ xData NOTIFY dataUpdated)
+    Q_PROPERTY(QVector<double> yData READ yData NOTIFY dataUpdated)
+    Q_PROPERTY(bool running READ isRunning NOTIFY runningChanged)
+
+public:
+    explicit DataGenerator(QObject *parent = nullptr)
+        : QObject(parent), m_timer(new QTimer(this)) {
+
+        m_timer->setInterval(50);
+        connect(m_timer, &QTimer::timeout, this, &DataGenerator::generateData);
+
+        m_sampleRate = 20000.0;
+        m_sineFrequency = 2.0; //Hz
+        m_sineAmplitude = 1.5;
+        m_noiseAmplitude = 0.03;
+
+        m_xData.reserve(m_sampleRate);
+        m_yData.reserve(m_sampleRate);
+    }
+
+    ~DataGenerator() override {
+        stop();
+    }
+    QVector<double> xData() const;
+    QVector<double> yData() const;
+    bool isRunning() const;
+
+
+public slots:
+    Q_INVOKABLE void start();
+    Q_INVOKABLE void stop();
+    Q_INVOKABLE void setParameters(double sineFreq, double sineAmp, double noiseAmp);
+
+signals:
+    void dataUpdated();
+    void runningChanged(bool running);
+
+private slots:
+    void generateData();
+
+private:
+    double m_sampleRate;
+    double m_sineFrequency;
+    double m_sineAmplitude;
+    double m_noiseAmplitude;
+
+    QVector<double> m_xData;
+    QVector<double> m_yData;
+
+    QTimer *m_timer;
+    mutable QReadWriteLock m_lock;
+};
+
+
+#endif //DATAGENERATOR_H