Surface Example

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 #ifndef SURFACEGRAPH_H
 #define SURFACEGRAPH_H

 #include <QtDataVisualization/Q3DSurface>
 #include <QtDataVisualization/QSurfaceDataProxy>
 #include <QtDataVisualization/QHeightMapSurfaceDataProxy>
 #include <QtDataVisualization/QSurface3DSeries>
 #include <QtWidgets/QSlider>

 using namespace QtDataVisualization;

 class SurfaceGraph : public QObject
 {
     Q_OBJECT
 public:
     explicit SurfaceGraph(Q3DSurface *surface);
     ~SurfaceGraph();

     void enableHeightMapModel(bool enable);
     void enableSqrtSinModel(bool enable);

     void toggleModeNone() { m_graph->setSelectionMode(QAbstract3DGraph::SelectionNone); }
     void toggleModeItem() { m_graph->setSelectionMode(QAbstract3DGraph::SelectionItem); }
     void toggleModeSliceRow() { m_graph->setSelectionMode(QAbstract3DGraph::SelectionItemAndRow
                                                           | QAbstract3DGraph::SelectionSlice); }
     void toggleModeSliceColumn() { m_graph->setSelectionMode(QAbstract3DGraph::SelectionItemAndColumn
                                                              | QAbstract3DGraph::SelectionSlice); }

     void setBlackToYellowGradient();
     void setGreenToRedGradient();

     void setAxisMinSliderX(QSlider *slider) { m_axisMinSliderX = slider; }
     void setAxisMaxSliderX(QSlider *slider) { m_axisMaxSliderX = slider; }
     void setAxisMinSliderZ(QSlider *slider) { m_axisMinSliderZ = slider; }
     void setAxisMaxSliderZ(QSlider *slider) { m_axisMaxSliderZ = slider; }

     void adjustXMin(int min);
     void adjustXMax(int max);
     void adjustZMin(int min);
     void adjustZMax(int max);

 public Q_SLOTS:
     void changeTheme(int theme);

 private:
     Q3DSurface *m_graph;
     QHeightMapSurfaceDataProxy *m_heightMapProxy;
     QSurfaceDataProxy *m_sqrtSinProxy;
     QSurface3DSeries *m_heightMapSeries;
     QSurface3DSeries *m_sqrtSinSeries;

     QSlider *m_axisMinSliderX;
     QSlider *m_axisMaxSliderX;
     QSlider *m_axisMinSliderZ;
     QSlider *m_axisMaxSliderZ;
     float m_rangeMinX;
     float m_rangeMinZ;
     float m_stepX;
     float m_stepZ;
     int m_heightMapWidth;
     int m_heightMapHeight;

     void setAxisXRange(float min, float max);
     void setAxisZRange(float min, float max);
     void fillSqrtSinProxy();
 };

 #endif // SURFACEGRAPH_H