EasingFunctionBase 類別
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
提供所有緩動函式的基底類別 (Base Class)。
public ref class EasingFunctionBase abstract : System::Windows::Freezable, System::Windows::Media::Animation::IEasingFunctionpublic abstract class EasingFunctionBase : System.Windows.Freezable, System.Windows.Media.Animation.IEasingFunctiontype EasingFunctionBase = class
inherit Freezable
interface IEasingFunctionPublic MustInherit Class EasingFunctionBase
Inherits Freezable
Implements IEasingFunction- 繼承
- 衍生
- 實作
範例
下列範例將示範如何建立簡單的自訂 easing 函式。 您可以藉由覆 EaseInCore 寫 方法來新增自己的數學邏輯，以瞭解 Easing 函式的運作方式。
namespace CustomEasingFunction
{
public class CustomSeventhPowerEasingFunction : EasingFunctionBase
{
public CustomSeventhPowerEasingFunction()
: base()
{
}
// Specify your own logic for the easing function by overriding
// the EaseInCore method. Note that this logic applies to the "EaseIn"
// mode of interpolation.
protected override double EaseInCore(double normalizedTime)
{
// applies the formula of time to the seventh power.
return Math.Pow(normalizedTime, 7);
}
// Typical implementation of CreateInstanceCore
protected override Freezable CreateInstanceCore()
{
return new CustomSeventhPowerEasingFunction();
}
}
}
Namespace CustomEasingFunction
Public Class CustomSeventhPowerEasingFunction
Inherits EasingFunctionBase
Public Sub New()
MyBase.New()
End Sub
' Specify your own logic for the easing function by overriding
' the EaseInCore method. Note that this logic applies to the "EaseIn"
' mode of interpolation.
Protected Overrides Function EaseInCore(ByVal normalizedTime As Double) As Double
' applies the formula of time to the seventh power.
Return Math.Pow(normalizedTime, 7)
End Function
' Typical implementation of CreateInstanceCore
Protected Overrides Function CreateInstanceCore() As Freezable
Return New CustomSeventhPowerEasingFunction()
End Function
End Class
End Namespace
<Window x:Class="CustomEasingFunction.Window1"
xmlns:CustomEase="clr-namespace:CustomEasingFunction"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="500" Width="300">
<StackPanel>
<TextBlock Margin="10" TextWrapping="Wrap">Click on the rectangle to start the animation</TextBlock>
<StackPanel x:Name="LayoutRoot" Background="White">
<Rectangle Name="myRectangle" Width="200" Height="30" Fill="Blue">
<Rectangle.Triggers>
<EventTrigger RoutedEvent="Rectangle.MouseDown">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation From="30" To="300" Duration="00:00:3"
Storyboard.TargetName="myRectangle"
Storyboard.TargetProperty="Height">
<DoubleAnimation.EasingFunction>
<!-- You get the EasingMode property for free on your custom
easing function.-->
<CustomEase:CustomSeventhPowerEasingFunction EasingMode="EaseIn"/>
</DoubleAnimation.EasingFunction>
</DoubleAnimation>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Rectangle.Triggers>
</Rectangle>
</StackPanel>
</StackPanel>
</Window>
備註
您可以繼承自這個類別，以建立自己的自訂 Easing 函式。
建構函式
| EasingFunctionBase() |
初始化 EasingFunctionBase 類別的新執行個體。 |
欄位
| EasingModeProperty |
識別 EasingMode 相依性屬性。 |
屬性
| CanFreeze |
取得值，指出是否可以將物件設為不可修改。 (繼承來源 Freezable) |
| DependencyObjectType |
DependencyObjectType取得包裝這個實例之 CLR 型別的 。 (繼承來源 DependencyObject) |
| Dispatcher |
取得與這個 Dispatcher 關聯的 DispatcherObject。 (繼承來源 DispatcherObject) |
| EasingMode |
取得或設定值，這個值會指定動畫如何進行插補。 |
| IsFrozen |
取得值，該值表示物件目前是否可修改。 (繼承來源 Freezable) |
| IsSealed |
取得值，這個值表示此執行個體目前是否已密封 (唯讀)。 (繼承來源 DependencyObject) |
方法
事件
| Changed |
發生於 Freezable 或所含的物件遭到修改時。 (繼承來源 Freezable) |
