WPF：我如何繪製多邊形調整大小

Question

時保留LineSegments的角度我創建了一個光滑的面板效果，看起來像這樣：

這是XAML：

<Window x:Class="Window1" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     Title="Window1" Height="200" Width="300"> 
     <StackPanel Orientation="Vertical"> 
      <StackPanel.Background> 
       <DrawingBrush> 
        <DrawingBrush.Drawing> 
         <DrawingGroup> 
          <GeometryDrawing> 
           <GeometryDrawing.Geometry> 
            <RectangleGeometry Rect="0,0,1,1"></RectangleGeometry> 
           </GeometryDrawing.Geometry> 
           <GeometryDrawing.Brush> 
            <SolidColorBrush Opacity="0.5" Color="Blue" /> 
           </GeometryDrawing.Brush> 
          </GeometryDrawing> 
          <GeometryDrawing> 
           <GeometryDrawing.Geometry> 
            <PathGeometry> 
             <PathGeometry.Figures> 
              <PathFigureCollection> 
               <PathFigure IsClosed="True" StartPoint="0,0"> 
                <PathFigure.Segments> 
                 <PathSegmentCollection> 
                  <LineSegment Point="0.3,0" /> 
                  <LineSegment Point="0.2,1" /> 
                  <LineSegment Point="0,1" /> 
                  <LineSegment Point="0,0" /> 
                 </PathSegmentCollection> 
                </PathFigure.Segments> 
               </PathFigure> 
              </PathFigureCollection> 
             </PathGeometry.Figures> 
            </PathGeometry> 
           </GeometryDrawing.Geometry> 
           <GeometryDrawing.Brush> 
            <LinearGradientBrush StartPoint="0,0.5" EndPoint="1,0.5"> 
             <GradientStop Offset="0.0" Color="Transparent" /> 
             <GradientStop Offset="0.7" Color="#58FFFFFF" /> 
             <GradientStop Offset="1.0" Color="#AFFFFFFF" /> 
            </LinearGradientBrush> 
           </GeometryDrawing.Brush> 
          </GeometryDrawing> 
         </DrawingGroup> 
        </DrawingBrush.Drawing> 
       </DrawingBrush> 
      </StackPanel.Background> 
     </StackPanel> 
    </Window> 

現在，如果我將此窗口調整爲高度的一半，則閃爍的傾斜角度與之前不同：

我明白，上面的代碼應該是這樣的工作，我的問題是：如何創建這樣的多邊形段的角度調整大小上保持同樣的效果？對於半高調整所需的最終結果是：

Answer 1

我覺得

<DrawingBrush Stretch="UniformToFill"> 
     ... 

應該做的伎倆。