用xaml画的带阴影3D感的圆球

 1 <StackPanel VerticalAlignment="Center" HorizontalAlignment="Center">
 2         <Ellipse Width="120" Height="120">
 3             <Ellipse.Fill>
 4                 <RadialGradientBrush GradientOrigin="0.25,0.25" RadiusX="0.75" RadiusY="0.75">
 5                     <RadialGradientBrush.GradientStops>
 6                         <GradientStop Color="Red" Offset="0" />
 7                         <GradientStop Color="Orange" Offset="0.65" />
 8                         <GradientStop Color="Yellow" Offset="0.8" />
 9                     </RadialGradientBrush.GradientStops>
10                 </RadialGradientBrush>
11             </Ellipse.Fill>
12         </Ellipse>
13 </StackPanel>