QGraphicsItem::scenePos() or pos()

[Gopala Krishna]

This may sound like dumb simple question but I rather felt its better to clarify.
I am 100% sure that I am not using "parent - children" amongst QGraphicsItems in my app. So is it better to use scenePos() or pos() ? Any performance differences ?

[Gopala Krishna]

Is there absolutely no answer from anyone? :confused:

[jpn]

It should be quite easy to judge:


QPointF QGraphicsItem::pos() const
{
return d_ptr->pos; // returns a member variable of the private implementation class (the pos is maintained while moving the item)
}

QPointF QGraphicsItem::scenePos() const
{
return mapToScene(0, 0); // uses QMatrix to map (0,0) to scene coords
}

Use the power of provided Qt sources! ;)

[Gopala Krishna]

Use the power of provided Qt sources! ;)
Very correct, should have done that :( Probably it might help other newbies atleast ;)