是否可以在WPF中为LinearGradientBrush设置动画？

Question

是否可以为LinearGradientBrush的StartPoint或EndPoint设置动画？如果是这样，用于动画点的Storyboard对象的类型是什么，因为当我尝试以下时我得到“0,1”不是Double的有效值，我确实意识到我不应该使用DoubleAnimationUsingKeyFrames类型。

当前代码：

<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。只需在上面的示例中使用“PointAnimationUsingKeyFrames”和“SplinePointKeyFrame”即可。它应该工作。