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examples/oscilloscope/SamplingThread.h

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+/*****************************************************************************
+ * Qwt Examples - Copyright (C) 2002 Uwe Rathmann
+ * This file may be used under the terms of the 3-clause BSD License
+ *****************************************************************************/
+
+#pragma once
+
+#include <QwtSamplingThread>
+
+class SamplingThread : public QwtSamplingThread
+{
+    Q_OBJECT
+
+  public:
+    SamplingThread( QObject* parent = NULL );
+
+    double frequency() const;
+    double amplitude() const;
+
+  public Q_SLOTS:
+    void setAmplitude( double );
+    void setFrequency( double );
+
+  protected:
+    virtual void sample( double elapsed ) QWT_OVERRIDE;
+
+  private:
+    virtual double value( double timeStamp ) const;
+
+    double m_frequency;
+    double m_amplitude;
+};