.net CombinedGeometry的合并模式

<Page

  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

  <Canvas>  

    <Path Fill="LightGreen" Stroke="Green" StrokeThickness="3">

      <Path.Data>

      <GeometryGroup>

        <CombinedGeometry GeometryCombineMode="Union">

          <CombinedGeometry.Geometry1><EllipseGeometry Center="120 120" RadiusX="100" RadiusY="100"/></CombinedGeometry.Geometry1>

          <CombinedGeometry.Geometry2><EllipseGeometry Center="220 120" RadiusX="100" RadiusY="100"/></CombinedGeometry.Geometry2>

        </CombinedGeometry>

        <CombinedGeometry GeometryCombineMode="Intersect">

          <CombinedGeometry.Geometry1><EllipseGeometry Center="440 120" RadiusX="100" RadiusY="100"/></CombinedGeometry.Geometry1>

          <CombinedGeometry.Geometry2><EllipseGeometry Center="540 120" RadiusX="100" RadiusY="100"/></CombinedGeometry.Geometry2>

        </CombinedGeometry>

        <CombinedGeometry GeometryCombineMode="Xor">

          <CombinedGeometry.Geometry1><EllipseGeometry Center="120 340" RadiusX="100" RadiusY="100"/></CombinedGeometry.Geometry1>

          <CombinedGeometry.Geometry2><EllipseGeometry Center="220 340" RadiusX="100" RadiusY="100"/></CombinedGeometry.Geometry2>

        </CombinedGeometry>

        <CombinedGeometry GeometryCombineMode="Exclude">

          <CombinedGeometry.Geometry1><EllipseGeometry Center="440 340" RadiusX="100" RadiusY="100"/></CombinedGeometry.Geometry1>

          <CombinedGeometry.Geometry2><EllipseGeometry Center="540 340" RadiusX="100" RadiusY="100"/></CombinedGeometry.Geometry2>

        </CombinedGeometry>

        </GeometryGroup>

      </Path.Data>

    </Path>

    <TextBlock Canvas.Left="150" Canvas.Top="120" Text="Union" />

    <TextBlock Canvas.Left="465" Canvas.Top="120" Text="Intersect" />

    <TextBlock Canvas.Left="80" Canvas.Top="335" Text="Xor" />

    <TextBlock Canvas.Left="240" Canvas.Top="335" Text="Xor" />

    <TextBlock Canvas.Left="385" Canvas.Top="335" Text="Exclude" />

  </Canvas>

</Page>