Move line in a scene

AlvaroS

Hello everyone!
First of all thanks a lot for helping me and reading this post.

I would like to move the line position in a scene (not to reomive it and then add it).

I did this:

        QGraphicsItem* my_item = a.value(i); //Item (i) selected
        QGraphicsLineItem *linea_moved = qgraphicsitem_cast<QGraphicsLineItem *>(my_item); // Line moved is a line that user has selected

            QPointF pstart;
            QPointF pend;

            pstart.setX(XStart_line-ui->Move_left->text().toDouble()+ui->Move_right->text().toDouble());
            pstart.setY(YStart_line+ui->Move_down->text().toDouble()-ui->Move_up->text().toDouble());

            pend.setX(XEnd_line-ui->Move_left->text().toDouble()+ui->Move_right->text().toDouble());
            pend.setY(YEnd_line+ui->Move_down->text().toDouble()-ui->Move_up->text().toDouble());

            linea_moved->line().setPoints(pstart,pend);

The points line change but the problem is that the line does not change in the scene...
So how can I do that?

thanks a lot!!!

mrjj

@AlvaroS said:

linea_moved->line().setPoints(pstart,pend);

Hi, im no expert but I think you need a setLine
http://doc.qt.io/qt-4.8/qgraphicslineitem.html#line
Seems to return a COPY of the line object.

so I think u need something like:
QLineF newline= linea_moved->line();
newline.setPoints(pstart,pend);
linea_moved->setLine(newline);

AlvaroS

@mrjj hi my friend. You helped me a lot. That works fine!!!!!!!
Superb!!!!!!!
Thanks again