QuadraticEase 类

定义

表示一个缓动函数,该函数使用公式 f (t) = t2 创建加速和/或减速的动画

public ref class QuadraticEase sealed : EasingFunctionBase
/// [Windows.Foundation.Metadata.Activatable(65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class QuadraticEase final : EasingFunctionBase
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
class QuadraticEase final : EasingFunctionBase
[Windows.Foundation.Metadata.Activatable(65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class QuadraticEase : EasingFunctionBase
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
public sealed class QuadraticEase : EasingFunctionBase
Public NotInheritable Class QuadraticEase
Inherits EasingFunctionBase
<QuadraticEase .../>
继承
Object Platform::Object IInspectable DependencyObject EasingFunctionBase QuadraticEase
属性

Windows 要求

设备系列
Windows 10 (在 10.0.10240.0 中引入)
API contract
Windows.Foundation.UniversalApiContract (在 v1.0 中引入)

示例

以下示例将 QuadraticEase 缓动函数应用于 DoubleAnimation 以创建减速动画。

    <StackPanel x:Name="LayoutRoot" >
    <StackPanel.Resources>
        <Storyboard x:Name="myStoryboard">
            <DoubleAnimation From="1" To="6" Duration="00:00:3" 
                Storyboard.TargetName="rectScaleTransform" 
                Storyboard.TargetProperty="ScaleY">
                <DoubleAnimation.EasingFunction>
                    <QuadraticEase EasingMode="EaseOut"/>
                </DoubleAnimation.EasingFunction>
            </DoubleAnimation>
        </Storyboard>
    </StackPanel.Resources>

    <Rectangle PointerPressed="Pointer_Clicked" 
     Fill="Blue" Width="200" Height="30">
        <Rectangle.RenderTransform>
            <ScaleTransform x:Name="rectScaleTransform" />
        </Rectangle.RenderTransform>
    </Rectangle>

</StackPanel>
// When the user clicks the rectangle, the animation
// begins. 
private void Pointer_Clicked(object sender, PointerRoutedEventArgs e)
{
    myStoryboard.Begin();
}
' When the user clicks the rectangle, the animation
' begins. 
Private Sub Pointer_Clicked(ByVal sender As Object, ByVal e As PointerRoutedEventArgs)
    myStoryboard.Begin()
End Sub

注解

QuadraticEase 的行为与 PowerEase 的行为相同, Power 值为 2。 当 EasingModeEaseIn (默认) 时,此缓动函数启动速度缓慢,在大约一半的持续时间内保持相当缓慢,并在接近持续时间结束时加速。

缓动函数可以应用于 From/To/By 动画的 EasingFunction 属性,或应用于用于关键帧动画缓变体的关键帧类型的 EasingFunction 属性。 有关详细信息,请参阅 关键帧动画和缓动函数动画

构造函数

QuadraticEase()

初始化 QuadraticEase 类的新实例。

属性

Dispatcher

获取与此对象关联的 CoreDispatcherCoreDispatcher 表示可以访问 UI 线程上的 DependencyObject 的工具,即使代码是由非 UI 线程启动的。

(继承自 DependencyObject)
EasingMode

获取或设置用于指定动画内插方式的值。

(继承自 EasingFunctionBase)

方法

ClearValue(DependencyProperty)

清除依赖属性的本地值。

(继承自 DependencyObject)
Ease(Double)

转换规范化时间以控制动画的节奏。

(继承自 EasingFunctionBase)
GetAnimationBaseValue(DependencyProperty)

返回为依赖属性建立的任何基值,该基值适用于动画未处于活动状态的情况。

(继承自 DependencyObject)
GetValue(DependencyProperty)

DependencyObject 返回依赖属性的当前有效值。

(继承自 DependencyObject)
ReadLocalValue(DependencyProperty)

如果设置了本地值,则返回依赖属性的本地值。

(继承自 DependencyObject)
RegisterPropertyChangedCallback(DependencyProperty, DependencyPropertyChangedCallback)

注册通知函数,用于侦听此 DependencyObject 实例上对特定 DependencyProperty 的更改。

(继承自 DependencyObject)
SetValue(DependencyProperty, Object)

设置 DependencyObject 上依赖属性的本地值。

(继承自 DependencyObject)
UnregisterPropertyChangedCallback(DependencyProperty, Int64)

取消以前通过调用 RegisterPropertyChangedCallback 注册的更改通知。

(继承自 DependencyObject)

适用于

另请参阅