Is there any way to rotate coordinate system respect y.

turkoz14

Hi, im new using qt and i kno that i can rotate the coordinate system with gracphicview->rorate() but this rotate respect x only so the x axis will always be on the top.
i can explain better what i need attaching this images:

this is the default system, but if i rotate it wiht the function rotate it rotates clockwise online and what i need is this :

No rotating 270° cause that makes that the x axis is on the top and y above.
Thanks in advice.

SGaist

Hi,

QTransform is likely what you want to use in order to do that.

Hope it helps

turkoz14

Hi, thanks for the quick response.
Im checking and doint this:
this->ui->graphicsView->transform().rotate(180,(Qt::Axis(Qt::YAxis)));
but there is no change on the visualization.

SGaist

What about applying it on the item directly ?

turkoz14

No, the same nothing happend and also the thing is to do it to the whole scene cause i add to many items to do it individually.

SGaist

I just realized: you’re doing it wrong. Get the current transform, modify it and then set that new version of the transform.

What you are doing is modify a copy of the transform object used by the scene. So it won’t have any influence.