Qt and OpenGl (I'm lost)

[JohannesMunk]

Ok! Then I would highly recommend to use the comfortable opengl wrapping that QPainter allows:

In another thread just yesterday I set up a simple OpenGL GraphicsView:

http://www.qtcentre.org/threads/3424...476#post158476

Instead of a button-widget you will add lots of custom QGraphicsItems for the different mathematical objects.

Use scene->addItem(new Vector(QVector3D(..)));

class Vector : public QGraphicsItem
{
public:
    Vector(QVector3D a);
    QRectF boundingRect() const{ return QRectF( ... ); }
 
    void paint(QPainter *painter, const QStyleOptionGraphicsItem *item, QWidget *widget)
    {
        painter->drawLine(.. );
    }
};

class Vector : public QGraphicsItem
{
public:
    Vector(QVector3D a);
    QRectF boundingRect() const{ return QRectF( ... ); }

    void paint(QPainter *painter, const QStyleOptionGraphicsItem *item, QWidget *widget)
    {
        painter->drawLine(.. );
    }
};

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Let me know if you run into more problems!

Joh