Review Request: Added "pendulum" effect for plasma animations

[Aaron J. Seigo]

On April 7, 2010, you wrote:
> This patch generated a discussion which ended up on a cooler idea (thanks
> notmart, Savago and igorto!) that is providing two properties on the
> Animation class in order to set up the pendulum behavior ("attenuation"
> for the amount of delta value decrement between each bounce step and
> "bounceCenter" to define from which point the target widget shall have the
> same distance throughout the whole animation).

this is just an easing curve, no? only it's hardcoded into Animation. and so 
every time we'd want another behaviour, we'd end up harcoding another curve 
method into Animation? 

Animation alreay has support for QEasingCurve. the attached patch makes it 
easier to use (with an example of how Rotation was modified; all the classes 
would need this modification though.)

then this pedulum behaviour could become a QEasingCurve implementation. the 
next question becomes: do we want to offer a Animator::easingCurve(..) method?

-- 
Aaron J. Seigo
humru othro a kohnu se
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KDE core developer sponsored by Qt Development Frameworks
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