EasingDoubleKeyFrame EasingDoubleKeyFrame EasingDoubleKeyFrame EasingDoubleKeyFrame Class

Definition

Associates an easing function with a DoubleAnimationUsingKeyFrames key-frame animation.

public : sealed class EasingDoubleKeyFrame : DoubleKeyFrame, IEasingDoubleKeyFrame
struct winrt::Windows::UI::Xaml::Media::Animation::EasingDoubleKeyFrame : DoubleKeyFrame, IEasingDoubleKeyFrame
public sealed class EasingDoubleKeyFrame : DoubleKeyFrame, IEasingDoubleKeyFrame
Public NotInheritable Class EasingDoubleKeyFrame Inherits DoubleKeyFrame Implements IEasingDoubleKeyFrame
<EasingDoubleKeyFrame .../>
Inheritance
EasingDoubleKeyFrameEasingDoubleKeyFrameEasingDoubleKeyFrameEasingDoubleKeyFrame
Attributes
Windows 10 requirements
Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)

Examples

This XAML example shows how to use key frames that have easing functions associated with them to create an animation of a rectangle that contracts upward, slows down, then expands downward (as though falling), and then bounces to a stop.

<StackPanel x:Name="LayoutRoot" >
    <StackPanel.Resources>
        <Storyboard x:Name="myStoryboard">
            <DoubleAnimationUsingKeyFrames
             Storyboard.TargetProperty="Height"
             Storyboard.TargetName="myRectangle" EnableDependentAnimation="true">

                <!-- This keyframe animates the ellipse up to the crest 
                     where it slows down and stops. -->
                <EasingDoubleKeyFrame Value="30" KeyTime="00:00:02">
                    <EasingDoubleKeyFrame.EasingFunction>
                        <CubicEase EasingMode="EaseOut"/>
                    </EasingDoubleKeyFrame.EasingFunction>
                </EasingDoubleKeyFrame>

                <!-- This keyframe animates the ellipse back down and makes
                     it bounce. -->
                <EasingDoubleKeyFrame Value="200" KeyTime="00:00:06">
                    <EasingDoubleKeyFrame.EasingFunction>
                        <BounceEase Bounces="5" EasingMode="EaseOut"/>
                    </EasingDoubleKeyFrame.EasingFunction>
                </EasingDoubleKeyFrame>

            </DoubleAnimationUsingKeyFrames>
        </Storyboard>
    </StackPanel.Resources>

    <Rectangle x:Name="myRectangle" PointerPressed="Pointer_Clicked" 
     Fill="Blue" Width="200" Height="200" />
</StackPanel>
// When the user clicks the rectangle, the animation
// begins. 
private void Pointer_Clicked(object sender, PointerRoutedEventArgs e)
{
    myStoryboard.Begin();
}
' When the user clicks the rectangle, the animation
' begins. 
Private Sub Pointer_Clicked(ByVal sender As Object, ByVal e As PointerRoutedEventArgs)
    myStoryboard.Begin()
End Sub

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.

Constructors

EasingDoubleKeyFrame() EasingDoubleKeyFrame() EasingDoubleKeyFrame() EasingDoubleKeyFrame()

Initializes a new instance of the EasingDoubleKeyFrame class.

public : EasingDoubleKeyFrame()
EasingDoubleKeyFrame() const;
public EasingDoubleKeyFrame()
Public Sub New()

Properties

Dispatcher Dispatcher Dispatcher Dispatcher

Gets the CoreDispatcher that this object is associated with. The CoreDispatcher represents a facility that can access the DependencyObject on the UI thread even if the code is initiated by a non-UI thread.

(Inherited from DependencyObject)

EasingFunction EasingFunction EasingFunction EasingFunction

Gets or sets the easing function that is applied to the key frame.

public : EasingFunctionBase EasingFunction { get; set; }
EasingFunctionBase EasingFunction(); void EasingFunction(EasingFunctionBase easingfunction);
public EasingFunctionBase EasingFunction { get; set; }
Public ReadWrite Property EasingFunction As EasingFunctionBase
<EasingPointKeyFrame>
  <EasingPointKeyFrame.EasingFunction>
    easingFunction
  </EasingPointKeyFrame.EasingFunction >
</EasingPointKeyFrame> 
Value
EasingFunctionBase EasingFunctionBase

The easing function that is applied to the key frame.

EasingFunctionProperty EasingFunctionProperty EasingFunctionProperty EasingFunctionProperty

Identifies the EasingFunction dependency property.

public : static DependencyProperty EasingFunctionProperty { get; }
static DependencyProperty EasingFunctionProperty();
public static DependencyProperty EasingFunctionProperty { get; }
Public Static ReadOnly Property EasingFunctionProperty As DependencyProperty
Value
DependencyProperty DependencyProperty

The identifier for the EasingFunction dependency property.

KeyTime KeyTime KeyTime KeyTime

Gets or sets the time at which the key frame's target Value should be reached.

(Inherited from DoubleKeyFrame)

KeyTimeProperty KeyTimeProperty KeyTimeProperty KeyTimeProperty

Identifies the KeyTime dependency property.

(Inherited from DoubleKeyFrame)

Value Value Value Value

Gets or sets the key frame's target value.

(Inherited from DoubleKeyFrame)

ValueProperty ValueProperty ValueProperty ValueProperty

Identifies the Value dependency property.

(Inherited from DoubleKeyFrame)

Methods

ClearValue(DependencyProperty) ClearValue(DependencyProperty) ClearValue(DependencyProperty) ClearValue(DependencyProperty)

Clears the local value of a dependency property.

(Inherited from DependencyObject)

GetAnimationBaseValue(DependencyProperty) GetAnimationBaseValue(DependencyProperty) GetAnimationBaseValue(DependencyProperty) GetAnimationBaseValue(DependencyProperty)

Returns any base value established for a dependency property, which would apply in cases where an animation is not active.

(Inherited from DependencyObject)

GetValue(DependencyProperty) GetValue(DependencyProperty) GetValue(DependencyProperty) GetValue(DependencyProperty)

Returns the current effective value of a dependency property from a DependencyObject.

(Inherited from DependencyObject)

ReadLocalValue(DependencyProperty) ReadLocalValue(DependencyProperty) ReadLocalValue(DependencyProperty) ReadLocalValue(DependencyProperty)

Returns the local value of a dependency property, if a local value is set.

(Inherited from DependencyObject)

RegisterPropertyChangedCallback(DependencyProperty,DependencyPropertyChangedCallback) RegisterPropertyChangedCallback(DependencyProperty,DependencyPropertyChangedCallback) RegisterPropertyChangedCallback(DependencyProperty,DependencyPropertyChangedCallback) RegisterPropertyChangedCallback(DependencyProperty,DependencyPropertyChangedCallback)

Registers a notification function for listening to changes to a specific DependencyProperty on this DependencyObject instance.

(Inherited from DependencyObject)

SetValue(DependencyProperty,Object) SetValue(DependencyProperty,Object) SetValue(DependencyProperty,Object) SetValue(DependencyProperty,Object)

Sets the local value of a dependency property on a DependencyObject.

(Inherited from DependencyObject)

UnregisterPropertyChangedCallback(DependencyProperty,Int64) UnregisterPropertyChangedCallback(DependencyProperty,Int64) UnregisterPropertyChangedCallback(DependencyProperty,Int64) UnregisterPropertyChangedCallback(DependencyProperty,Int64)

Cancels a change notification that was previously registered by calling RegisterPropertyChangedCallback.

(Inherited from DependencyObject)

See Also