Question

给定封闭的贝塞尔曲线路径，我将如何填充它的动画。填充必须是非线性的 - 围绕锐角流动，而不仅仅是一个露出填充颜色的平面。

此时，我假设我必须使用WriteableBitmap并自己完成所有操作。想法？

Answer 1

源自中心并向外扩散的RadialBrush通常看起来可以接受。有关示例，请参阅Kinectimals网站的“着色页”部分。

可能有效的另一个实现是将形状应用于Path的Clip属性，然后将StrokeThickness属性设置为非常大的值。

<Grid x:Name="LayoutRoot" Background="White">
    <Grid.Resources>
        <Storyboard x:Name="FillShape">
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.StrokeThickness)" Storyboard.TargetName="path">
            <EasingDoubleKeyFrame KeyTime="0:0:0.7" Value="118">
                <EasingDoubleKeyFrame.EasingFunction>
                    <CircleEase EasingMode="EaseOut"/>
                </EasingDoubleKeyFrame.EasingFunction>
            </EasingDoubleKeyFrame>
        </DoubleAnimationUsingKeyFrames>
    </Storyboard>
    </Grid.Resources>
    <Path x:Name="path" Data="M118,128 C182,300 238,342 330,252 C422,162 358,-40.000271 270,37.999855 C182,115.99998 118,128 118,128 z" Margin="117.5,19.95,264.563,181.398" Stretch="Fill" Stroke="Black" UseLayoutRounding="False" Clip="M0.4999969,108.05005 C64.500069,280.04974 120.50012,322.04968 212.50023,232.04984 C304.50034,142.04999 240.50026,-59.949921 152.50015,18.050066 C64.500069,96.050049 0.4999969,108.05005 0.4999969,108.05005 z" StrokeThickness="0"/>
</Grid>

填充路径的动画 - Silverlight

1 个答案: