how to do rectItem growing animation from origin?

[ramfacts]

hi,
i created QGraphicsRectItem. i want the animation as this item should be gradually increase in size from its origin.
i used the following api. but the item as well as moving from the origin.
animation->setScaleAt(a,b,c);

do you hav any solution by using only the QGraphics API's.?

-ram

[Lykurg]

Hi, see QGraphicsItem::setTransformOriginPoint().

[ramfacts]

Hi,
thank you for the reply.
but i want to grow the size of an item from origin to (x,y) without motion of item.

[ramfacts]

HI Lykurg,
I got that by QGraphicsItem::setTransformOriginPoint().
thanks.
ram

[rashmi]

i have got the same issue.
i used function which you specified in the following way but it gives me no result.

selectionItem->QGraphicsItem::setTransformOriginPoint (1000.0, 1000.0);

could you please help me with this issue.

thanks

[Lykurg]

What result do you expect and what do you get? And what is the size of selectionItem?

[rashmi]

expected result is to have zoomin effect i.e, selected item should grow from origin to (x,y) which in my case(100,100).

result of this does not give zoomin effect. i.e, selected item does not grow in size.

size of my selected item is this:

RectItem *selectionItem = new RectItem(QRectF(-225, -225, 450, 450),Qt::white, pad);

selectionItem->setTransformOriginPoint (100.0, 100.0);

this is what i have done.

expecting your review.

[rashmi]

hello all,

RectItem *rect = new RectItem(iconRect, iconColor, this);
rect->setTransformOriginPoint(50,50);

this is wat im trying to do i order to grow animation for origin to x,y in my case 50,50 but i dont get expected output. could some one help me.

qt-4.7
target window is directfb

[pan]

expected result is to have zoomin effect i.e, selected item should grow from origin to (x,y) which in my case(100,100).

result of this does not give zoomin effect. i.e, selected item does not grow in size.

I'm no expert, but from what I gather transform should move you object from one point to another.
setScale should allow your object to grow.

If you look at QGraphicsItem::setScale ( qreal factor ) you will see that it says there that it will scale at 0,0 but if you want it to scale at another point you need to use setTransformOriginPoint()