StepEasingFunction Class

Reference

Definition

Namespace:: Windows.UI.Composition

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Edit

A step function for interpolating between animation key frames that advances animations in increments like steps which can be can be defined. Behaviors for initial and final steps can be customized.

public ref class StepEasingFunction sealed : CompositionEasingFunction

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 196608)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class StepEasingFunction final : CompositionEasingFunction

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 196608)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class StepEasingFunction : CompositionEasingFunction

Public NotInheritable Class StepEasingFunction
Inherits CompositionEasingFunction

Inheritance: Object Platform::Object IInspectable CompositionObject CompositionEasingFunction StepEasingFunction

Attributes: ContractVersionAttribute MarshalingBehaviorAttribute ThreadingAttribute

Windows requirements

Device family	Windows 10 Anniversary Edition (introduced in 10.0.14393.0)
API contract	Windows.Foundation.UniversalApiContract (introduced in v3.0)

Examples

class StepsEasing
{
  StepsEasing(Compositor compositor, SpriteVisual heroVisual)
  {
    // This step function makes the property offset change in 5 steps
    // i.e. goes from (0,0,0) à (20,20,20) in 5 steps.
    StepEasingFunction steps = compositor.CreateStepEasingFunction(5);

    Vector3KeyFrameAnimation animation = compositor.CreateVector3KeyFrameAnimation();
    animation.InsertKeyFrame(0f, new Vector3(0f,0f,0f));
    animation.InsertKeyFrame(1f, new Vector3(20f,20f,0f), steps);
    animation.Duration = TimeSpan.FromSeconds(2);

    heroVisual.StartAnimation("Offset", animation);
  }
}

Remarks

The step easing function gives more flexibility for animations to advance in increments. Increments are defined using StepCount property. Steps can be customized using InitialStep, and FinalStep. Behavior for initial step can be customized using IsInitialStepSingleFrame and final step using IsFinalStepSingleFrame.

To create a new instance of StepEasingFunction, call one of these methods:

Properties

Comment	A string to associate with the CompositionObject. (Inherited from CompositionObject)
Compositor	The Compositor used to create this CompositionObject. (Inherited from CompositionObject)
Dispatcher	The dispatcher for the CompositionObject. (Inherited from CompositionObject)
DispatcherQueue	Gets the DispatcherQueue for the CompostionObject. (Inherited from CompositionObject)
FinalStep	The step to end at.
ImplicitAnimations	The collection of implicit animations attached to this object. (Inherited from CompositionObject)
InitialStep	The step to start at.
IsFinalStepSingleFrame	Indicates whether the final step should last the smallest possible duration.
IsInitialStepSingleFrame	Indicates whether the initial step should last the smallest possible duration.
Properties	The collection of properties associated with the CompositionObject. (Inherited from CompositionObject)
StepCount	The number of steps between the starting value and the end value.

Methods

Close()	Closes the CompositionObject and releases system resources. (Inherited from CompositionObject)
ConnectAnimation(String, CompositionAnimation)	Connects and animation. (Inherited from CompositionObject)
DisconnectAnimation(String)	Disconnects an animation. (Inherited from CompositionObject)
Dispose()	Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. (Inherited from CompositionObject)
PopulatePropertyInfo(String, AnimationPropertyInfo)	Defines a property that can be animated. (Inherited from CompositionObject)
StartAnimation(String, CompositionAnimation, AnimationController)	Connects an animation with the specified property of the object and starts the animation. (Inherited from CompositionObject)
StartAnimation(String, CompositionAnimation)	Connects an animation with the specified property of the object and starts the animation. (Inherited from CompositionObject)
StartAnimationGroup(ICompositionAnimationBase)	Starts an animation group. The StartAnimationGroup method on CompositionObject lets you start CompositionAnimationGroup. All the animations in the group will be started at the same time on the object. (Inherited from CompositionObject)
StopAnimation(String)	Disconnects an animation from the specified property and stops the animation. (Inherited from CompositionObject)
StopAnimationGroup(ICompositionAnimationBase)	Stops an animation group. (Inherited from CompositionObject)
TryGetAnimationController(String)	Returns an AnimationController for the animation running on the specified property. (Inherited from CompositionObject)

Applies to

Share via