WPF如何写出可以移动的(Shape如图所示)

最近在搞图形的程序，说真的翻书有些数据都是点到为止，没有完美的范例解说，可能是我理解能力太差了…
先前一直使用Win form C# 来做做数据处理也画一些报表，突然要用WPF来写程序真的很不习惯，尤其是绘图的部分，请教有经验的前辈要如何写(我用PhotoShop画的如图所示)?
能给一段范例跟说明吗~感谢…


[解决办法]
做了一个简单的例子：

XML code

 
  <Canvas xmlns:local="clr-namespace:WPFTester"> 
    <Canvas.Resources> 
      <Style TargetType="Ellipse"> 
        <Setter Property="Width" Value="{x:Static local:PointsConverter.PointWidth}" /> 
        <Setter Property="Height" Value="{x:Static local:PointsConverter.PointWidth}" /> 
        <Setter Property="Cursor" Value="SizeAll" /> 
        <Setter Property="Fill" Value="Blue" /> 
        <EventSetter Event="MouseLeftButtonDown" Handler="Element_MouseLeftButtonDown" /> 
        <EventSetter Event="MouseMove" Handler="Element_MouseMove" /> 
        <EventSetter Event="MouseLeftButtonUp" Handler="Element_MouseLeftButtonUp" /> 
      </Style> 
      <local:PointsConverter x:Key="PointsConverter" /> 
    </Canvas.Resources> 
    <Polygon Fill="Red"> 
      <Polygon.Points> 
        <MultiBinding Mode="TwoWay" Converter="{StaticResource PointsConverter}"> 
          <Binding ElementName="P1" Path="(Canvas.Left)" /> 
          <Binding ElementName="P1" Path="(Canvas.Top)" /> 
          <Binding ElementName="P2" Path="(Canvas.Left)" /> 
          <Binding ElementName="P2" Path="(Canvas.Top)" /> 
          <Binding ElementName="P3" Path="(Canvas.Left)" /> 
          <Binding ElementName="P3" Path="(Canvas.Top)" /> 
          <Binding ElementName="P4" Path="(Canvas.Left)" /> 
          <Binding ElementName="P4" Path="(Canvas.Top)" /> 
          <Binding ElementName="P5" Path="(Canvas.Left)" /> 
          <Binding ElementName="P5" Path="(Canvas.Top)" /> 
        </MultiBinding> 
      </Polygon.Points> 
    </Polygon> 
    <Ellipse Name="P1" Canvas.Left="50" Canvas.Top="50" /> 
    <Ellipse Name="P2" Canvas.Left="150" Canvas.Top="150" /> 
    <Ellipse Name="P3" Canvas.Left="250" Canvas.Top="250" /> 
    <Ellipse Name="P4" Canvas.Left="50" Canvas.Top="150" /> 
    <Ellipse Name="P5" Canvas.Left="150" Canvas.Top="50" /> 
  </Canvas>