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是否可以为 LinearGradientBrush 的 StartPoint 或 EndPoint 设置动画?如果是这样,用于为点设置动画的 Storyboard 对象的类型是什么,因为当我尝试以下操作时,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>
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1 回答 1

2

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

于 2010-09-09T19:58:41.757 回答