CircleEase

This represents an easing function that creates an animation that accelerates/decelerates using a circular function, and is denoted by the following function f(t) = 1 - sqrt(1 - t2).

Let's add the following RadioButton inside the StackPanel to create an animation with a circular easing effect:

<RadioButton GroupName="AnimationSelector" 
             Content="CircleEase - EaseInOut" 
             Margin="4"> 
    <RadioButton.Triggers> 
        <EventTrigger RoutedEvent="RadioButton.Checked"> 
            <BeginStoryboard> 
                <Storyboard AutoReverse="True"> 
                    <DoubleAnimation  
                     Storyboard.TargetName="circle" 
                     Storyboard.TargetProperty="(Canvas.Left)" 
                     To="350"> 
                        <DoubleAnimation.EasingFunction> 
                            <CircleEase...