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Hello once again, I'm wondering how it would be possible to show an animation of a polar plot (QwtPolar) and it's curves rotating smoothly around the origin. I looked a little into the tools Qt provies for animation, but I'm not sure if I would need QPropertyAnimation, QVarientAnimation, or something else entirely. I have no code yet but I'm doing a little research to find out how it would be possible.
You can use these animation classes, but a simple QTimer should do the job as well.
Uwe
If I would use the QPropertyAnimation, are there properties in QwtPolarCurve that contain the polar coordinate data? I looked in the QwtPolar main website and I see functions that return data, but not an actual property as far as I could recognize.
A curve is not even a QObject - but all you need to do is to derive from QwtPolarPlot and add the APIs you need.
Uwe
I guess a timer would be enough, I just worry about the animation being smooth enough with a timer, are there any performance advantages to one of the animation classes instead?
Isn't the animation stuff only about manipulating a timer interval for having something non linear ?
Guess your code will add some points to a curve + replot for each step. This is the only thing that counts for the performance and doesn't depend on how a step is called.
Uwe