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examples/bode/Plot.h

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+/*****************************************************************************
+ * Qwt Examples
+ * Copyright (C) 1997   Josef Wilgen
+ * Copyright (C) 2002   Uwe Rathmann
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the Qwt License, Version 1.0
+ *****************************************************************************/
+
+#pragma once
+
+#include <QwtPlot>
+
+class QwtPlotCurve;
+class QwtPlotMarker;
+
+class Plot : public QwtPlot
+{
+    Q_OBJECT
+
+  public:
+    Plot( QWidget* parent );
+
+  public Q_SLOTS:
+    void setDamp( double damping );
+
+  private:
+    void showData( const double* frequency, const double* amplitude,
+        const double* phase, int count );
+    void showPeak( double freq, double amplitude );
+    void show3dB( double freq );
+
+    QwtPlotCurve* m_curve1;
+    QwtPlotCurve* m_curve2;
+    QwtPlotMarker* m_marker1;
+    QwtPlotMarker* m_marker2;
+};