volumetric.h Example File

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  #ifndef VOLUMETRICMODIFIER_H
  #define VOLUMETRICMODIFIER_H

  #include <QtDataVisualization/q3dscatter.h>
  #include <QtDataVisualization/qcustom3dvolume.h>
  #include <QtCore/QTimer>
  #include <QtGui/QRgb>
  #include <QtWidgets/QLabel>
  #include <QtWidgets/QSlider>
  #include <QtWidgets/QRadioButton>

  using namespace QtDataVisualization;

  class VolumetricModifier : public QObject
  {
      Q_OBJECT
  public:
      explicit VolumetricModifier(Q3DScatter *scatter);
      ~VolumetricModifier();

      void setFpsLabel(QLabel *fpsLabel);
      void setMediumDetailRB(QRadioButton *button);
      void setHighDetailRB(QRadioButton *button);
      void setSliceLabels(QLabel *xLabel, QLabel *yLabel, QLabel *zLabel);
      void setAlphaMultiplierLabel(QLabel *label);

  public Q_SLOTS:
      void sliceX(int enabled);
      void sliceY(int enabled);
      void sliceZ(int enabled);
      void adjustSliceX(int value);
      void adjustSliceY(int value);
      void adjustSliceZ(int value);
      void handleFpsChange(qreal fps);
      void handleTimeout();
      void toggleLowDetail(bool enabled);
      void toggleMediumDetail(bool enabled);
      void toggleHighDetail(bool enabled);
      void setFpsMeasurement(bool enabled);
      void setSliceSliders(QSlider *sliderX, QSlider *sliderY, QSlider *sliderZ);
      void changeColorTable(int enabled);
      void setPreserveOpacity(bool enabled);
      void setTransparentGround(bool enabled);
      void setUseHighDefShader(bool enabled);
      void adjustAlphaMultiplier(int value);
      void toggleAreaAll(bool enabled);
      void toggleAreaMine(bool enabled);
      void toggleAreaMountain(bool enabled);
      void setDrawSliceFrames(int enabled);

  private:

      void initHeightMap(QString fileName, QVector<uchar> &layerData);
      void initMineShaftArray();
      int createVolume(int textureSize, int startIndex, int count,
                        QVector<uchar> *textureData);
      int excavateMineShaft(int textureSize, int startIndex, int count,
                            QVector<uchar> *textureData);
      void excavateMineBlock(int textureSize, int dataIndex, int size, QVector<uchar> *textureData);
      void handleSlicingChanges();

      Q3DScatter *m_graph;
      QCustom3DVolume *m_volumeItem;
      int m_sliceIndexX;
      int m_sliceIndexY;
      int m_sliceIndexZ;
      bool m_slicingX;
      bool m_slicingY;
      bool m_slicingZ;
      QLabel *m_fpsLabel;
      QRadioButton *m_mediumDetailRB;
      QRadioButton *m_highDetailRB;
      QVector<uchar> *m_lowDetailData;
      QVector<uchar> *m_mediumDetailData;
      QVector<uchar> *m_highDetailData;
      QTimer m_timer;
      int m_mediumDetailIndex;
      int m_highDetailIndex;
      int m_mediumDetailShaftIndex;
      int m_highDetailShaftIndex;
      QSlider *m_sliceSliderX;
      QSlider *m_sliceSliderY;
      QSlider *m_sliceSliderZ;
      QVector<QRgb> m_colorTable1;
      QVector<QRgb> m_colorTable2;
      bool m_usingPrimaryTable;
      QLabel *m_sliceLabelX;
      QLabel *m_sliceLabelY;
      QLabel *m_sliceLabelZ;
      QLabel *m_alphaMultiplierLabel;
      QVector<uchar> m_magmaLayer;
      QVector<uchar> m_waterLayer;
      QVector<uchar> m_groundLayer;
      QVector<QPair<QVector3D, QVector3D> > m_mineShaftArray;
  };

  #endif