QTransform rotate on X axis using QSlider

[wysota]

This is not a compilable example.

[mvbhavsar]

Please find attached code



Manish

[high_flyer]

The only reason something at all is changing is because you are unsing non initialized variables that give any garabage values they got at definition.
The fact you are not using the input parameter of updateItemRotation() doesn't help much either.
Then:

QTransform transform;
qreal m_rotation_x; //defining local variables. (the m_ notation suggests this should have a been a member - did you copy this?)
qreal m_rotation_y;
qreal m_rotation_z;
QPointF center;
 
qreal old_rot_x = m_rotation_x; //You are setting the non initialized variables in on other local variables that will die when the function ends.
qreal old_rot_y = m_rotation_y;
qreal old_rot_z = m_rotation_z;
m_rotation_x = ui->xSpin->value();
m_rotation_y = ui->ySpin->value();
m_rotation_z = ui->zSpin->value();

QTransform transform;
qreal m_rotation_x; //defining local variables. (the m_ notation suggests this should have a been a member - did you copy this?)
qreal m_rotation_y;
qreal m_rotation_z;
QPointF center;

qreal old_rot_x = m_rotation_x; //You are setting the non initialized variables in on other local variables that will die when the function ends.
qreal old_rot_y = m_rotation_y;
qreal old_rot_z = m_rotation_z;
m_rotation_x = ui->xSpin->value();
m_rotation_y = ui->ySpin->value();
m_rotation_z = ui->zSpin->value();

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I am also not quite sure I understand what rotating on more than one axis means on a 2D widget?

Seems to me you are clueless about what you are doing, or trying to do.

[wysota]

Please find attached code

It still doesn't compile.

In file included from properties.cpp:1:0:
properties.h:5:26: fatal error: spindelegate.h: Nie ma takiego pliku ani katalogu

Please post a minimal (i.e. not containing any code irrelevant to the problem) compilable (i.e. something I can run qmake && make on and it builds and runs) example (i.e. not your main project code) reproducing the problem.

[mvbhavsar]

Thanks for response from wysota and high_flyer.
I have resolved the issue and attaching complete code for reference.

Also, in reply to high_flyer's remarks, nothing can be done without any intentions and I have firm goals of what I want to achieve, this case was part of one of the very ambitious project. Also, there is much more in rotation about all 3 axis in 2D graphics. It matters when you have different imagination and also if it not much in rotation in 2D then QT would not have given rotation capability about all 3 axis.

I hope, I am able to clear doubts what I want to achieve through my code.


Regards

Manish