SplinePoint3DKeyFrame Class
System.Windows.Threading::DispatcherObject
System.Windows::DependencyObject
System.Windows::Freezable
System.Windows.Media.Animation::Point3DKeyFrame
System.Windows.Media.Animation::SplinePoint3DKeyFrame
Assembly: PresentationCore (in PresentationCore.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
The SplinePoint3DKeyFrame type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | SplinePoint3DKeyFrame() | Initializes a new instance of the SplinePoint3DKeyFrame class. |
![]() | SplinePoint3DKeyFrame(Point3D) | Initializes a new instance of the SplinePoint3DKeyFrame class with the specified ending value. |
![]() | SplinePoint3DKeyFrame(Point3D, KeyTime) | Initializes a new instance of the SplinePoint3DKeyFrame class with the specified ending value and key time. |
![]() | SplinePoint3DKeyFrame(Point3D, KeyTime, KeySpline) | Initializes a new instance of the SplinePoint3DKeyFrame class with the specified ending value, key time, and KeySpline. |
| Name | Description | |
|---|---|---|
![]() | CanFreeze | Gets a value that indicates whether the object can be made unmodifiable. (Inherited from Freezable.) |
![]() | DependencyObjectType | Gets the DependencyObjectType that wraps the CLR type of this instance. (Inherited from DependencyObject.) |
![]() | Dispatcher | Gets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject.) |
![]() | IsFrozen | Gets a value that indicates whether the object is currently modifiable. (Inherited from Freezable.) |
![]() | IsSealed | Gets a value that indicates whether this instance is currently sealed (read-only). (Inherited from DependencyObject.) |
![]() | KeySpline | Gets or sets the two control points that define animation progress for this key frame. |
![]() | KeyTime | Gets or sets the time at which the key frame's target Value should be reached. (Inherited from Point3DKeyFrame.) |
![]() | Value | Gets or sets the key frame's target value. (Inherited from Point3DKeyFrame.) |
| Name | Description | |
|---|---|---|
![]() | CheckAccess | Determines whether the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.) |
![]() | ClearValue(DependencyProperty) | Clears the local value of a property. The property to be cleared is specified by a DependencyProperty identifier. (Inherited from DependencyObject.) |
![]() | ClearValue(DependencyPropertyKey) | Clears the local value of a read-only property. The property to be cleared is specified by a DependencyPropertyKey. (Inherited from DependencyObject.) |
![]() | 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. (Inherited from Freezable.) |
![]() | CloneCore | Makes the instance a clone (deep copy) of the specified Freezable using base (non-animated) property values. (Inherited from Freezable.) |
![]() | CloneCurrentValue | Creates a modifiable clone (deep copy) of the Freezable using its current values. (Inherited from Freezable.) |
![]() | CloneCurrentValueCore | Makes the instance a modifiable clone (deep copy) of the specified Freezable using current property values. (Inherited from Freezable.) |
![]() | CoerceValue | Coerces the value of the specified dependency property. This is accomplished by invoking any CoerceValueCallback function specified in property metadata for the dependency property as it exists on the calling DependencyObject. (Inherited from DependencyObject.) |
![]() | CreateInstance | Initializes a new instance of the Freezable class. (Inherited from Freezable.) |
![]() | CreateInstanceCore | Creates a new instance of SplinePoint3DKeyFrame. (Overrides Freezable::CreateInstanceCore().) |
![]() | Equals | Determines whether a provided DependencyObject is equivalent to the current DependencyObject. (Inherited from DependencyObject.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | Freeze() | Makes the current object unmodifiable and sets its IsFrozen property to true. (Inherited from Freezable.) |
![]() | FreezeCore | Makes the Freezable object unmodifiable or tests whether it can be made unmodifiable. (Inherited from Freezable.) |
![]() | 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. (Inherited from Freezable.) |
![]() | GetAsFrozenCore | Makes the instance a frozen clone of the specified Freezable using base (non-animated) property values. (Inherited from Freezable.) |
![]() | 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. (Inherited from Freezable.) |
![]() | GetCurrentValueAsFrozenCore | Makes the current instance a frozen clone of the specified Freezable. If the object has animated dependency properties, their current animated values are copied. (Inherited from Freezable.) |
![]() | GetHashCode | Gets a hash code for this DependencyObject. (Inherited from DependencyObject.) |
![]() | GetLocalValueEnumerator | Creates a specialized enumerator for determining which dependency properties have locally set values on this DependencyObject. (Inherited from DependencyObject.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | GetValue | Returns the current effective value of a dependency property on this instance of a DependencyObject. (Inherited from DependencyObject.) |
![]() | InterpolateValue | Returns the interpolated value of a specific key frame at the progress increment provided. (Inherited from Point3DKeyFrame.) |
![]() | InterpolateValueCore | Uses splined interpolation to transition between the previous key frame value and the value of the current key frame. (Overrides Point3DKeyFrame::InterpolateValueCore(Point3D, Double).) |
![]() | InvalidateProperty | Re-evaluates the effective value for the specified dependency property (Inherited from DependencyObject.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | OnChanged | Called when the current Freezable object is modified. (Inherited from Freezable.) |
![]() | OnFreezablePropertyChanged(DependencyObject, DependencyObject) | Ensures that appropriate context pointers are established for a DependencyObjectType data member that has just been set. (Inherited from Freezable.) |
![]() | OnFreezablePropertyChanged(DependencyObject, DependencyObject, DependencyProperty) | This member supports the Windows Presentation Foundation (WPF) infrastructure and is not intended to be used directly from your code. (Inherited from Freezable.) |
![]() | OnPropertyChanged | Overrides the DependencyObject implementation of OnPropertyChanged to also invoke any Changed handlers in response to a changing dependency property of type Freezable. (Inherited from Freezable.) |
![]() | ReadLocalValue | Returns the local value of a dependency property, if it exists. (Inherited from DependencyObject.) |
![]() | ReadPreamble | Ensures that the Freezable is being accessed from a valid thread. Inheritors of Freezable must call this method at the beginning of any API that reads data members that are not dependency properties. (Inherited from Freezable.) |
![]() | SetCurrentValue | Sets the value of a dependency property without changing its value source. (Inherited from DependencyObject.) |
![]() | SetValue(DependencyProperty, Object) | Sets the local value of a dependency property, specified by its dependency property identifier. (Inherited from DependencyObject.) |
![]() | SetValue(DependencyPropertyKey, Object) | Sets the local value of a read-only dependency property, specified by the DependencyPropertyKey identifier of the dependency property. (Inherited from DependencyObject.) |
![]() | ShouldSerializeProperty | Returns a value that indicates whether serialization processes should serialize the value for the provided dependency property. (Inherited from DependencyObject.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
![]() | VerifyAccess | Enforces that the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.) |
![]() | WritePostscript | Raises the Changed event for the Freezable and invokes its OnChanged method. Classes that derive from Freezable should call this method at the end of any API that modifies class members that are not stored as dependency properties. (Inherited from Freezable.) |
![]() | WritePreamble | Verifies that the Freezable is not frozen and that it is being accessed from a valid threading context. Freezable inheritors should call this method at the beginning of any API that writes to data members that are not dependency properties. (Inherited from Freezable.) |
| Name | Description | |
|---|---|---|
![]() ![]() | IKeyFrame::Value | Gets or sets the value associated with a KeyTime instance. (Inherited from Point3DKeyFrame.) |
This class is used as part of a Point3DKeyFrameCollection in conjunction with a Point3DAnimationUsingKeyFrames to animate a Point3D property value along a set of key frames.
A key frame defines a segment of the Point3DAnimationUsingKeyFrames to which it belongs. Each key frame has a target Value and a KeyTime. The KeyTime specifies the time at which the key frame's Value should be reached. A key frame animates from the target value of the previous key frame to its own target value. It starts when the previous key frame ends and ends when its own key time is reached.
Spline key frames like SplinePoint3DKeyFrame creates a variable transition between values which is determined by the KeySpline property. Splined interpolation can be used to achieve more realistic "real world" timing effects such as acceleration and deceleration.
In the following example, Point3DAnimationUsingKeyFrames is used to animate the position of a PerspectiveCamera in a 3D scene. In addition, Vector3DAnimationUsingKeyFrames is used to animate the direction the camera is pointing in the 3D scene. Both of these animations use several key frames which create a series of animation effects:
LinearPoint3DKeyFrame and LinearVector3DKeyFrame are used to create a smooth, linear interpolation between values.
DiscretePoint3DKeyFrame and DiscreteVector3DKeyFrame are used to create sudden "jumps" between values (no interpolation).
SplinePoint3DKeyFrame and SplineVector3DKeyFrame are used to create a variable transition between values depending on the KeySpline property. In the example below, the animation starts off slow but toward the end of the time segment, speeds up exponentially.
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" > <DockPanel> <Viewbox> <Canvas Width="321" Height="201"> <Viewport3D Name="MyAnimatedObject" ClipToBounds="True" Width="150" Height="150" Canvas.Left="0" Canvas.Top="10"> <!-- Defines the camera used to view the 3D object. The position and direction of this camera is animated in the Storyboard below. --> <Viewport3D.Camera> <PerspectiveCamera x:Name="myPerspectiveCamera" Position="0,0,2" LookDirection="0,0,-1" FieldOfView="45" /> </Viewport3D.Camera> <Viewport3D.Children> <ModelVisual3D> <ModelVisual3D.Children> <!-- This resource defines the 3D cube that is used in this example.--> <StaticResource ResourceKey="PictureCubeModelVisual3DResource" /> </ModelVisual3D.Children> </ModelVisual3D> </Viewport3D.Children> <Viewport3D.Triggers> <EventTrigger RoutedEvent="Viewport3D.Loaded"> <BeginStoryboard> <Storyboard> <!-- This animation moves the camera around the object. The object is not changing position or rotating but moving the camera makes it appear that it is.--> <Point3DAnimationUsingKeyFrames Storyboard.TargetName="myPerspectiveCamera" Storyboard.TargetProperty="Position" > <Point3DAnimationUsingKeyFrames.KeyFrames> <!-- Using a LinearPoint3DKeyFrame, the camera moves steadily from its starting position to a new position that is to the upper right and a little farther away. This happens over the first second of the animation. --> <LinearPoint3DKeyFrame Value="1,2,3" KeyTime="0:0:1" /> <!-- Using a DiscretePoint3DKeyFrame, the camera suddenly moves farther away from the object. This happens immdeiately after the first 1 and a half second of the animation. --> <DiscretePoint3DKeyFrame Value="1,2,5" KeyTime="0:0:1.5" /> <!-- Using a SplinePoint3DKeyFrame, the camera moves back to its starting point. The animation starts out slowly at first and then speeds up. This KeyFrame ends after the fourth second. --> <SplinePoint3DKeyFrame KeySpline="0.6,0.0 0.9,0.00" Value="0,0,2" KeyTime="0:0:4" /> </Point3DAnimationUsingKeyFrames.KeyFrames> </Point3DAnimationUsingKeyFrames> <!-- As the position of the camera changes using the Point3DAnimation above, the direction the camera is pointing swivels to keep the object within the view of the camera. --> <Vector3DAnimationUsingKeyFrames Storyboard.TargetName="myPerspectiveCamera" Storyboard.TargetProperty="LookDirection" > <Vector3DAnimationUsingKeyFrames.KeyFrames> <!-- Using a LinearVector3DKeyFrame, the camera swivels steadily from its starting position down and to the left. This happens over the first second of the animation. --> <LinearVector3DKeyFrame Value="-1,-2,-3" KeyTime="0:0:1" /> <!-- Using a DiscreteVector3DKeyFrame, the camera suddenly swivels up. This happens immdeiately after the first 1 and a half second of the animation. --> <DiscreteVector3DKeyFrame Value="-1,-1,-3" KeyTime="0:0:1.5" /> <!-- Using a SplineVector3DKeyFrame, the camera swivels back to its starting point. The animation starts out slowly at first and then speeds up. This KeyFrame ends after the fourth second. --> <SplineVector3DKeyFrame KeySpline="0.6,0.0 0.9,0.00" Value="0,0,-1" KeyTime="0:0:4" /> </Vector3DAnimationUsingKeyFrames.KeyFrames> </Vector3DAnimationUsingKeyFrames> </Storyboard> </BeginStoryboard> </EventTrigger> </Viewport3D.Triggers> </Viewport3D> </Canvas> </Viewbox> </DockPanel> </Page>
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

