silverlight画图 虚线 反射效果 射线渐变效果Radial Gradient

<Polyline Stroke="Blue" StrokeThickness="14" StrokeDashArray="1 2"
 Points="10,30 60,0 90,40 120,10 350,10">
</Polyline>

<Grid x: Name="LayoutRoot" Background="White">
 <Grid.RowDefinitions>
 <RowDefinition></RowDefinition>
 <RowDefinition></RowDefinition>
 </Grid.RowDefinitions>
 <Image Grid.Row="0" Source="harpsichord.jpg"></Image>
 <Image Grid.Row="1" Source="harpsichord.jpg"></Image>
</Grid>

<Image Grid.Row="1" Source="harpsichord.jpg" RenderTransformOrigin="0,0.4">
 <Image.RenderTransform>
 <ScaleTransform ScaleY="-0.8"></ScaleTransform>
 </Image.RenderTransform>
 <Image.OpacityMask>
 <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
 <GradientStop Offset="0" Color="Transparent"></GradientStop>
 <GradientStop Offset="1" Color="#44000000"></GradientStop>
 </LinearGradientBrush>
 </Image.OpacityMask>
</Image>

<Ellipse Margin="5" Stroke="Black" StrokeThickness="1" Width="200" Height="200">
 <Ellipse.Fill>
 <RadialGradientBrush RadiusX="1" RadiusY="1" GradientOrigin="0.7,0.3">
 <GradientStop Color="White" Offset="0" />
 <GradientStop Color="Blue" Offset="1" />
 </RadialGradientBrush>
 </Ellipse.Fill>
</Ellipse>