[Qt-interest] How to update

[Sven Grunewaldt]

Am 02.07.2009 09:32, schrieb Sujan Dasmahapatra:
>
> Dear Friends
>
> I have a custom GraphicsItem  Geometry class.
>
> *Class Geometry:public  QGraphicsItem*
>
> *{*
>
> *                Q_OBJECT*
>
> *Public:*
>
> *                Int  numberOfPoints;*
>
> *                QPointF  *points;*
>
> *};*
>
> * *
>
> *Geometry *geometry = new Geometry;*
>
> *geometry->setPos(dx+geometry->x(),dy+geometry->y());*
>
>  I do a translation on the geometry by setPos() function so the 
> position of the geometry is changed.How would I update the 'points' 
> with the new  coordinate points??? Please tell me someone.
>
> Kind regards,
> LM Glasfiber R&D (India) Pvt. Ltd.
>
> Sujan Dasmahapatra
> Project Engineer - CFD
>
> Telephone: +91 80 66470248
> Mobile:
> E-mail: sdh at lmglasfiber.com <mailto:sdh at lmglasfiber.com>
>
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>    
Why don't you just use pos() from QGraphicsItem?

If you really need your own QPointF just write a wrapper function...
void Geometry::mySetPos(qreal x, qreal y)
{
     setPos(x, y);
     points->setX(x);
     points->setY(y);
}

Regards,
Sven Grunewaldt
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