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SingleAnimationBase.GetCurrentValueCore Method

Calculates a value that represents the current value of the property being animated, as determined by the host animation.

Namespace:  System.Windows.Media.Animation
Assembly:  PresentationCore (in PresentationCore.dll)

protected abstract float GetCurrentValueCore(
	float defaultOriginValue,
	float defaultDestinationValue,
	AnimationClock animationClock
)

Parameters

defaultOriginValue
Type: System.Single

The suggested origin value, used if the animation does not have its own explicitly set start value.

defaultDestinationValue
Type: System.Single

The suggested destination value, used if the animation does not have its own explicitly set end value.

animationClock
Type: System.Windows.Media.Animation.AnimationClock

An AnimationClock that generates the CurrentTime or CurrentProgress used by the host animation.

Return Value

Type: System.Single
The calculated value of the property, as determined by the current animation.

The value of the defaultOriginValue parameter depends on the animation’s position in the composition chain:

  • If the animation is in the first position in a composition chain and it replaces another animation, defaultOriginValue is the output of that animation at the time it was replaced.

  • If the animation is in the first position in a composition chain and no animation exists to replace, defaultOriginValue is the base value of the animated property.

  • If this animation is not in the first position of a composition chain, then defaultOriginValue is the value that is returned by the previous animation in the composition chain that has an AnimationClock that is not Stopped.

The value of the defaultDestinationValue parameter depends on whether there is a previous property Trigger composition layer.

  • If there is a previous property Trigger composition layer, defaultDestinationValue is the output from that layer.

  • If there is no previous composition layer, defaultDestinationValue is the base value of the property that you are animating.

For more information about animation composition, see the Animation and Timing System Overview. For more information about creating custom animation types, see the Custom Animations Overview.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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