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.