DiscreteRotation3DKeyFrame Class
Animates from the Rotation3D value of the previous key frame to its own Value using discrete interpolation.
System.Windows.Threading::DispatcherObject
System.Windows::DependencyObject
System.Windows::Freezable
System.Windows.Media.Animation::Rotation3DKeyFrame
System.Windows.Media.Animation::DiscreteRotation3DKeyFrame
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 DiscreteRotation3DKeyFrame type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | DiscreteRotation3DKeyFrame() | Initializes a new instance of the DiscreteRotation3DKeyFrame class. |
![]() | DiscreteRotation3DKeyFrame(Rotation3D) | Initializes a new instance of the DiscreteRotation3DKeyFrame class with the specified ending value. |
![]() | DiscreteRotation3DKeyFrame(Rotation3D, KeyTime) | Initializes a new instance of the DiscreteRotation3DKeyFrame class with the specified ending value and key time. |
| 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.) |
![]() | KeyTime | Gets or sets the time at which the key frame's target Value should be reached. (Inherited from Rotation3DKeyFrame.) |
![]() | Value | Gets or sets the key frame's target value. (Inherited from Rotation3DKeyFrame.) |
| 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 the DiscreteRotation3DKeyFrame class. (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 Rotation3DKeyFrame.) |
![]() | InterpolateValueCore | Computes a discrete interpolation between the previous key frame value and the value of the current key frame, using the supplied progress increment. (Overrides Rotation3DKeyFrame::InterpolateValueCore(Rotation3D, 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 Rotation3DKeyFrame.) |
This class is used as part of a Rotation3DKeyFrameCollection in conjunction with a Rotation3DAnimationUsingKeyFrames object to animate a Rotation3D property value along a set of key frames.
A key frame defines a segment of the Rotation3DAnimationUsingKeyFrames 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.
In the following example, Rotation3DAnimationUsingKeyFrames is used to make a 3D object rotate while its axis of rotation animates resulting in a "wobble". This animation uses the following key frames:
LinearRotation3DKeyFrame is used to create a smooth, linear interpolation between values.
DiscreteRotation3DKeyFrame is used to create sudden "jumps" between values (no interpolation).
SplineRotation3DKeyFrame is used to create a variable transition between values depending on the KeySpline property. In the example below, this part of 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"> <!-- The Viewport3D provides a rendering surface for 3-D visual content. --> <Viewport3D Name="MyAnimatedObject" ClipToBounds="True" Width="150" Height="150" Canvas.Left="0" Canvas.Top="10"> <!-- Defines the camera used to view the 3D object. --> <Viewport3D.Camera> <PerspectiveCamera Position="0,0,2" LookDirection="0,0,-1" FieldOfView="60" /> </Viewport3D.Camera> <!-- The ModelVisual3D children contain the 3D models --> <Viewport3D.Children> <!-- Two ModelVisual3D define the lights cast in the scene. Without light, the 3D object cannot be seen. Also, the direction of the lights affect shadowing. --> <ModelVisual3D> <ModelVisual3D.Content> <DirectionalLight Color="#FFFFFF" Direction="-0.612372,-0.5,-0.612372" /> </ModelVisual3D.Content> </ModelVisual3D> <ModelVisual3D> <ModelVisual3D.Content> <DirectionalLight Color="#FFFFFF" Direction="0.612372,-0.5,-0.612372" /> </ModelVisual3D.Content> </ModelVisual3D> <ModelVisual3D> <ModelVisual3D.Content> <GeometryModel3D> <!-- The geometry specifes the shape of the 3D plane. In this case, a flat sheet is created. --> <GeometryModel3D.Geometry> <MeshGeometry3D TriangleIndices="0,1,2 3,4,5 " Normals="0,0,1 0,0,1 0,0,1 0,0,1 0,0,1 0,0,1 " TextureCoordinates="0,0 1,0 1,1 1,1 0,1 0,0 " Positions="-0.5,-0.5,0.5 0.5,-0.5,0.5 0.5,0.5,0.5 0.5,0.5,0.5 -0.5,0.5,0.5 -0.5,-0.5,0.5 " /> </GeometryModel3D.Geometry> <!-- The material specifies the material applied to the plane. In this case it is a linear gradient.--> <GeometryModel3D.Material> <MaterialGroup> <DiffuseMaterial> <DiffuseMaterial.Brush> <LinearGradientBrush StartPoint="0,0.5" EndPoint="1,0.5"> <LinearGradientBrush.GradientStops> <GradientStop Color="Yellow" Offset="0" /> <GradientStop Color="Red" Offset="0.25" /> <GradientStop Color="Blue" Offset="0.75" /> <GradientStop Color="LimeGreen" Offset="1" /> </LinearGradientBrush.GradientStops> </LinearGradientBrush> </DiffuseMaterial.Brush> </DiffuseMaterial> </MaterialGroup> </GeometryModel3D.Material> <!-- The Transform specifies how to transform the 3D object. The properties of the Rotation object are animated causing the 3D object to rotate and "wobble" (see Storyboard below).--> <GeometryModel3D.Transform> <RotateTransform3D x:Name="myRotateTransform3D" > <RotateTransform3D.Rotation> <AxisAngleRotation3D Axis="0,3,0" Angle="40" /> </RotateTransform3D.Rotation> </RotateTransform3D> </GeometryModel3D.Transform> </GeometryModel3D> </ModelVisual3D.Content> </ModelVisual3D> </Viewport3D.Children> <!-- Trigger the rotation animation when the 3D object loads. --> <Viewport3D.Triggers> <EventTrigger RoutedEvent="Viewport3D.Loaded"> <BeginStoryboard> <Storyboard> <!-- This animation animates the Rotation property of the RotateTransform causing the 3D shape to rotate and wobble as the rotation angle and axis are animated. --> <Rotation3DAnimationUsingKeyFrames Storyboard.TargetName="myRotateTransform3D" Storyboard.TargetProperty="Rotation" > <Rotation3DAnimationUsingKeyFrames.KeyFrames> <!-- Using a LinearRotation3DKeyFrame, the object gradually rotates to an angle of -60 degrees while the axis of rotation shifts (animates) to a new value. --> <LinearRotation3DKeyFrame KeyTime="0:0:1"> <LinearRotation3DKeyFrame.Value> <AxisAngleRotation3D Axis="1,0,1" Angle="-60" /> </LinearRotation3DKeyFrame.Value> </LinearRotation3DKeyFrame> <!-- Using a DiscreteRotation3DKeyFrame, the object suddenly rotates to the an angle of 80 degrees on a new axis. This happens immdeiately after the first 1 and a half seconds of the animation. --> <DiscreteRotation3DKeyFrame KeyTime="0:0:1.5"> <DiscreteRotation3DKeyFrame.Value> <AxisAngleRotation3D Axis="0,0,1" Angle="80" /> </DiscreteRotation3DKeyFrame.Value> </DiscreteRotation3DKeyFrame> <!-- Using a SplineRotation3DKeyFrame, the object rotates back to its starting position. The animation starts out slowly at first and then speeds up. This KeyFrame ends after the fourth second. --> <SplineRotation3DKeyFrame KeySpline="0.6,0.0 0.9,0.00" KeyTime="0:0:4"> <SplineRotation3DKeyFrame.Value> <AxisAngleRotation3D Axis="0,3,0" Angle="40" /> </SplineRotation3DKeyFrame.Value> </SplineRotation3DKeyFrame> </Rotation3DAnimationUsingKeyFrames.KeyFrames> </Rotation3DAnimationUsingKeyFrames> </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.

