DoubleAnimation.EasingFunction Property

Definition

Namespace:

Windows.UI.Xaml.Media.Animation

Gets or sets the easing function applied to this animation.

public:
 property EasingFunctionBase ^ EasingFunction { EasingFunctionBase ^ get(); void set(EasingFunctionBase ^ value); };

EasingFunctionBase EasingFunction();

void EasingFunction(EasingFunctionBase value);

public EasingFunctionBase EasingFunction { get; set; }

var easingFunctionBase = doubleAnimation.easingFunction;
doubleAnimation.easingFunction = easingFunctionBase;

Public Property EasingFunction As EasingFunctionBase

<DoubleAnimation>
  <DoubleAnimation.EasingFunction>
    singleEasingFunction
  </DoubleAnimation.EasingFunction>
</DoubleAnimation>

Property Value

EasingFunctionBase

The easing function applied to this animation.

Examples

This XAML example applies a BounceEase easing function to a DoubleAnimation to create a bouncing effect.

<StackPanel x:Name="LayoutRoot" Background="White">
    <StackPanel.Resources>
        <Storyboard x:Name="myStoryboard">
            <DoubleAnimation From="30" To="200" Duration="00:00:3" 
                Storyboard.TargetName="ball" 
                Storyboard.TargetProperty="(UIElement.RenderTransform).(TranslateTransform.Y)">
                <DoubleAnimation.EasingFunction>
                    <BounceEase Bounces="4" EasingMode="EaseOut" 
                                Bounciness="1.8" />
                </DoubleAnimation.EasingFunction>
            </DoubleAnimation>
        </Storyboard>
    </StackPanel.Resources>

    <Ellipse x:Name="ball" MouseLeftButtonDown="Clicked" 
     Fill="Blue" Width="100" Height="100">
      <Ellipse.RenderTransform>
        <TranslateTransform/>
      <Ellipse.RenderTransform>
    <Ellipse
</StackPanel>

// When the user clicks the object, the animation begins. 
private void Clicked(object sender, PointerRoutedEventArgs e)
{
    myStoryboard.Begin();
}

Remarks

Easing functions allow you to apply custom mathematical formulas to your animations. Mathematical operations are often useful to produce animations that simulate real-world physics in a 2-D coordinate system. For example, you may want an object to realistically bounce or behave as though it were on a spring. For a list of easing functions and info on how to use them, see Key-frame animations and easing function animations.

See also

• Storyboarded animations
• Key-frame animations and easing function animations
• XAML animation sample