Qt 5.7 | Qt Data Visualization | Volumetric rendering Example | volumetric.h Example File

Qt 5.7.1 Reference Documentation

# volumetric.h Example File

volumetric/volumetric.h

      /****************************************************************************
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      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the Qt Data Visualization module of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:GPL$
      ** Commercial License Usage
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      ** Alternatively, this file may be used under the terms of the GNU
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      ** the Free Software Foundation and appearing in the file LICENSE.GPL3
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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