🔹 EasingDoubleKeyFrame Class
namespace Noesis | MSDN
A class that enables you to associate easing functions with a DoubleAnimationUsingKeyFrames key frame animation.
The following example shows how to use key frames with 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.
<Rectangle Name="myRectangle" Width="200" Height="200" Fill="Blue">
<Rectangle.Triggers>
<EventTrigger RoutedEvent="Rectangle.MouseDown">
<BeginStoryboard>
<Storyboard>
<DoubleAnimationUsingKeyFrames
Storyboard.TargetProperty="Height"
Storyboard.TargetName="myRectangle">
<!-- 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>
</BeginStoryboard>
</EventTrigger>
</Rectangle.Triggers>
</Rectangle>
This class is used as part of a DoubleKeyFrameCollection in conjunction with a DoubleAnimationUsingKeyFrames to animate a Double property value along a set of key frames. This DoubleKeyFrame interpolates between the Double value of the previous key frame and its own value linearly with an easing function to produce its output value.
Inheritance Hierarchy
• EasingDoubleKeyFrame
Properties
| Name | Description |
|---|---|
| ◆ EasingFunction | Gets or sets the easing function applied to the key frame |
◆ Dependency Property ◆ Reflection Property
From DoubleKeyFrame
| Name | Description |
|---|---|
| ◆ Value | Gets or sets the key frame's target value |
◆ Dependency Property ◆ Reflection Property
From BaseKeyFrame
| Name | Description |
|---|---|
| ◆ KeyTime | Gets or sets the time at which the key frame's target Value should be reached |
◆ Dependency Property ◆ Reflection Property
From Freezable
| Name | Description |
|---|---|
| ◆ CanFreeze | Gets a value that indicates whether the object can be made unmodifiable. |
| ◆ IsFrozen | Gets a value that indicates whether the object is currently modifiable. |
◆ Dependency Property ◆ Reflection Property
From DispatcherObject
| Name | Description |
|---|---|
| ◆ ThreadId | Gets the thread this DispatcherObject is associated with. Returns NoThreadId when this object is not attached to any thread. |
◆ Dependency Property ◆ Reflection Property
Attached Properties
EasingDoubleKeyFrame has no attached properties
Methods
From DoubleKeyFrame
| Name | Description |
|---|---|
| ◆ InterpolateValue(float, float) | Returns the interpolated value of a specific key frame at the progress increment provided |
From Freezable
| Name | Description |
|---|---|
| ◆ Clone() | Creates a modifiable clone of the Freezable, making deep copies of the object's values. When copying the object's dependency properties, this method copies expressions (which might no longer resolve) but not animations or their current values. The cloned Freezable::IsFrozen property is false even if the source's IsFrozen property is true. |
| ◆ CloneCurrentValue() | Creates a modifiable clone (deep copy) of the Freezable using its current values. The cloned object's IsFrozen property is false even if the source's IsFrozen property is true. |
| ◆ Freeze() | Makes the current object unmodifiable and sets its IsFrozen property to true. |
| ◆ GetAsFrozen() | Creates a frozen copy of the Freezable, using base (non-animated) property values. Because the copy is frozen, any frozen sub-objects are copied by reference. The copy's IsFrozen property is set to true. Throws if the Freezable cannot be frozen because it contains expressions or animated properties. |
| ◆ GetCurrentValueAsFrozen() | Creates a frozen copy of the Freezable using current property values. Because the copy is frozen, any frozen sub-objects are copied by reference. The copy's IsFrozen property is set to true. |
From DependencyObject
| Name | Description |
|---|---|
| ◆ ClearAnimation(const DependencyProperty*) | Clears the animation value of a property |
| ◆ ClearLocalValue(const DependencyProperty*) | Clears the local value of a property The property to be cleared is specified by a DependencyProperty identifier |
| ◆ CoerceValue(const DependencyProperty*) | Coerces and validates the effective property value |
| ◆ DependencyPropertyChanged() | Returns the PropertyChanged event |
| ◆ Destroyed() | Destroyed delegate is raised when object is going to be destroyed |
| ◆ GetBaseValue(const DependencyProperty*) | Returns the base value without animation nor coerce (this never returns Expression like GetLocalValue) |
| ◆ GetExpression(const DependencyProperty*) | Gets the expression, if any, used to evaluate the specified property value |
| ◆ GetLocalValue(const DependencyProperty*) | Returns the local value of a dependency property, if it exists |
| ◆ GetValue(const DependencyProperty*) | Returns the current effective value of a dependency property on this instance of a DependencyObject |
| ◆ GetValueObject(const DependencyProperty*) | Returns the current effective value of a dependency property on this instance of a DependencyObject as a boxed value |
| ◆ GetValueProvider(const DependencyProperty*) | Gets the provider that returns the effective value for the specified dependency property |
| ◆ HasAnimatedProperties() | Returns true if there is any animated property |
| ◆ InvalidateProperty(const DependencyProperty*, uint8_t) | Re-evaluates the effective value for the specified dependency property if necessary If null is passed, a full re-evaluation could be needed |
| ◆ IsCached(const DependencyProperty*, uint8_t*) | Returns if the value is stored in the cache. If true, the priority is returned in the provider field |
| ◆ IsSealed() | Gets a value that indicates whether this instance is currently sealed (read-only) |
| ◆ SetAnimation(const DependencyProperty*, SetValueType<T>::Type) | Sets the animated value of a property |
| ◆ SetCurrentValue(const DependencyProperty*, SetValueType<T>::Type) | Sets the current value of a dependency property. The current value is set on the coerce field, without modifying source or animated value |
| ◆ SetCurrentValueObject(const DependencyProperty*, BaseComponent*) | Sets the current value of a dependency property using a boxed value |
| ◆ SetExpression(const DependencyProperty*, Expression*) | Sets the expression to be evaluated dynamically to obtain the value of the property |
| ◆ SetValue(const DependencyProperty*, SetValueType<T>::Type) | Sets the local value of a dependency property |
| ◆ SetValueObject(const DependencyProperty*, BaseComponent*) | Sets the local value (boxed) of a dependency property |
From DispatcherObject
| Name | Description |
|---|---|
| ◆ CheckAccess() | Determines whether the calling thread has access to this DispatcherObject |
| ◆ VerifyAccess() | Enforces that the calling thread has access to this DispatcherObject |
Events
EasingDoubleKeyFrame has no events