是否可以在WPF中为LinearGradientBrush创建动画？

Question

是否可以为LinearGradientBrush的StartPoint或EndPoint设置动画效果？如果是这样，Storyboard对象的动画类型是什么类型，因为当我尝试以下我得到“0,1”不是Double的有效值，我意识到我不应该使用DoubleAnimationUsingKeyFrames类型。

目前代码：

<UserControl.Triggers> 
    <EventTrigger RoutedEvent="UserControl.Loaded"> 
     <BeginStoryboard> 
      <Storyboard> 
       <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" 
              Storyboard.TargetName="Path1" 
              Storyboard.TargetProperty="(Path.Stroke).(LinearGradientBrush.StartPoint)"> 
        <SplineDoubleKeyFrame KeyTime="00:00:0" Value="0,1"/> 
        <SplineDoubleKeyFrame KeyTime="00:00:2" Value=".5,.5"/> 
        <SplineDoubleKeyFrame KeyTime="00:00:4" Value="1,0"/> 
        <SplineDoubleKeyFrame KeyTime="00:00:6" Value=".5,.5"/> 
       </DoubleAnimationUsingKeyFrames> 
       <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" 
              Storyboard.TargetName="Path1" 
              Storyboard.TargetProperty="(Path.Stroke).(LinearGradientBrush.EndPoint)"> 
        <SplineDoubleKeyFrame KeyTime="00:00:0" Value="1,0"/> 
        <SplineDoubleKeyFrame KeyTime="00:00:2" Value=".5,.5"/> 
        <SplineDoubleKeyFrame KeyTime="00:00:4" Value="0,1"/> 
        <SplineDoubleKeyFrame KeyTime="00:00:6" Value=".5,.5"/> 
       </DoubleAnimationUsingKeyFrames> 
      </Storyboard> 
     </BeginStoryboard> 
    </EventTrigger> 
</UserControl.Triggers> 

Answer 1

是。在上面的例子中只需使用“PointAnimationUsingKeyFrames”和“SplinePointKeyFrame”。它应该工作。