Qt Quick 3D - Custom Morphing Animation

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 #ifndef MORPHGEOMETRY_H
 #define MORPHGEOMETRY_H

 #include <QtQuick3D/qquick3d.h>
 #include <QtQuick3D/qquick3dgeometry.h>

 #include <QVector3D>
 #include <QtCore/QList>

 class MorphGeometry : public QQuick3DGeometry
 {
     Q_OBJECT
     QML_NAMED_ELEMENT(MorphGeometry)
     Q_PROPERTY(int gridSize READ gridSize WRITE setGridSize NOTIFY gridSizeChanged)

 public:
     MorphGeometry(QQuick3DObject *parent = nullptr);

     int gridSize() { return m_gridSize; }
     void setGridSize(int gridSize);

 signals:
     void gridSizeChanged();

 private:
     void calculateGeometry();
     void updateData();

     QList<QVector3D> m_positions;
     QList<QVector3D> m_normals;

     QList<QVector3D> m_targetPositions;
     QList<QVector3D> m_targetNormals;

     QList<quint32> m_indexes;

     QByteArray m_vertexBuffer;
     QByteArray m_indexBuffer;

     int m_gridSize = 50;
     QVector3D boundsMin;
     QVector3D boundsMax;
 };

 #endif // MORPHGEOMETRY_H