I have a problem with walls and paths in a 3D OpenGL with QT6

Question

I use this code

MazeScene::MazeScene(const QVector<Light> &lights, mazeData m, int width, int height)
    : m_lights(lights)
    , m_walkingVelocity(0)
    , m_strafingVelocity(0)
    , m_turningSpeed(0)
    , m_pitchSpeed(0)
    , m_deltaYaw(0)
    , m_deltaPitch(0)
    , m_simulationTime(0)
    , m_walkTime(0)
    , m_width(width)
    , m_height(height)
    , m_player(0)
    , m_accelerated(false)
{
    m_camera.setPos(QPointF(1.5, 1.5));
    m_camera.setYaw(0.1);


    m_doorAnimation = new QTimeLine(1000, this);
    m_doorAnimation->setUpdateInterval(20);
    connect(m_doorAnimation, SIGNAL(valueChanged(qreal)), this, SLOT(moveDoors(qreal)));

 //   qDebug() << "MazeScene constructor";

    m.display();

    QMap<char, int> types;
    types[' '] = -2;
    types['-'] = -1;
    types['#'] = 0;

    QString line="\n";

    for (int x = 0; x < height; ++x) {
        for (int y = 0; y < width; ++y) {







            if(m.getValue(x,y)==1) addWall(QPointF(x, y), QPointF(x+1, y), 0);
            if(m.getValue(x,y)==1) addWall(QPointF(x+1, y+1), QPointF(x, y+1), 0);
            if(m.getValue(x,y)==1) addWall(QPointF(x, y+1), QPointF(x, y), 0);
            if(m.getValue(x,y)==1) addWall(QPointF(x+1, y), QPointF(x+1, y+1), 0);

            if(m.getValue(x,y)==3) addWall(QPointF(x, y), QPointF(x+1, y), -1);
            if(m.getValue(x,y)==3) addWall(QPointF(x+1, y+1), QPointF(x, y+1), -1);
            if(m.getValue(x,y)==3) addWall(QPointF(x, y+1), QPointF(x, y), -1);
            if(m.getValue(x,y)==3) addWall(QPointF(x+1, y), QPointF(x+1, y+1), -1);

            if(m.getValue(x,y)==4) addWall(QPointF(x, y), QPointF(x+1, y), 1);
            if(m.getValue(x,y)==4) addWall(QPointF(x+1, y+1), QPointF(x, y+1), 1);
            if(m.getValue(x,y)==4) addWall(QPointF(x, y+1), QPointF(x, y), 1);
            if(m.getValue(x,y)==4) addWall(QPointF(x+1, y), QPointF(x+1, y+1), 1);





            if(m.getValue(x,y)==1) line=line+"#";
               else line=line+".";

        }



        line= line + "\n";

    }

    //qDebug() << line;

    QTimer *timer = new QTimer(this);
    timer->setInterval(20);
    timer->start();
    connect(timer, SIGNAL(timeout()), this, SLOT(move()));

    etimer.start();
    // START
    //m_time.start();
    updateTransforms();
    updateRenderer();

    m_walkingItem = new WalkingItem(this);
    //m_walkingItem->scale(0.008, 0.008);
    m_walkingItem->setZValue(100000);

    addItem(m_walkingItem);
}

I use this code in the constructor for walls

void MazeScene::addWall(const QPointF &a, const QPointF &b, int type)
{
    WallItem *item = new WallItem(this, a, b, type);
#ifdef USE_PHONON
    if (item->childItem() && item->type() == 7) {
        m_playerPos = (a + b ) / 2;
        m_player = static_cast<MediaPlayer *>(item->childItem()->widget());
    }
#endif

#if 0
    QGraphicsProxyWidget *proxy = item->childItem();
    QWebView *view = proxy ? qobject_cast<QWebView *>(proxy->widget()) : 0;
    if (view) {
        connect(view, SIGNAL(loadFinished(bool)), this, SLOT(loadFinished()));
        proxy->setVisible(false);
    }
#endif
    item->setVisible(false);
    addProjectedItem(item);
    m_walls << item;

    if (type == -1)
        m_doors << item;

    setSceneRect(-1, -1, 2, 2);
    if (item->childItem()) {
        QObject *widget = item->childItem()->widget()->children().value(0);
        QPushButton *button = qobject_cast<QPushButton *>(widget);
        if (button)
            m_buttons << button;
    }
}

To draw walls with OpenGL but left and right are inverted

On the 2D map with 0 and 1 I have to turn left and on the 3D OpenGL view I have to turn right.

I want to change OpenGL Code to turn left.

The src and bin of the project is available there :

https://sourceforge.net/projects/qmazegen/files/qMazeGen-QT6-SRC-BIN.zip/

The maze is working same walls and paths but maybe a transform to visit 3D view like the 2D map.