diff --git a/AIStudio.Wpf.DiagramApp/Views/MainWindow.xaml b/AIStudio.Wpf.DiagramApp/Views/MainWindow.xaml
index df785da..80936f9 100644
--- a/AIStudio.Wpf.DiagramApp/Views/MainWindow.xaml
+++ b/AIStudio.Wpf.DiagramApp/Views/MainWindow.xaml
@@ -915,12 +915,14 @@
                         </Fluent:SplitButton.ToolTip>
                     </Fluent:SplitButton>-->
 
-                    <Fluent:SplitButton Header="形状" GroupName="DrawMode" IsCheckable="True" IsChecked="{Binding ShapeDrawModeSelected}"  Width="50" VerticalAlignment="Top">
-                        <Fluent:MenuItem Header="矩形工具" Size="Middle" IsCheckable="True" IsChecked="{Binding ShapeDrawMode,Converter={dd:ConverterValueMapToBool Parameter='Rectangle'}, ConverterParameter='Rectangle'}" Icon="{iconPacks:Material Kind=RectangleOutline}" />
-                        <Fluent:MenuItem Header="椭圆工具" Size="Middle" IsCheckable="True" IsChecked="{Binding ShapeDrawMode,Converter={dd:ConverterValueMapToBool Parameter='Ellipse'}, ConverterParameter='Ellipse'}" Icon="{iconPacks:Material Kind=EllipseOutline}" />
-                        <Fluent:MenuItem Header="线条工具" Size="Middle" IsCheckable="True" IsChecked="{Binding ShapeDrawMode,Converter={dd:ConverterValueMapToBool Parameter='Line'}, ConverterParameter='Line'}" Icon="{iconPacks:Material Kind=Minus}" />
-                        <Fluent:MenuItem Header="铅笔工具" Size="Middle" IsCheckable="True" IsChecked="{Binding ShapeDrawMode,Converter={dd:ConverterValueMapToBool Parameter='Polyline'}, ConverterParameter='Polyline'}" Icon="{iconPacks:Material Kind=Pencil}" />
-                        <Fluent:MenuItem Header="钢笔工具" Size="Middle" IsCheckable="True" IsChecked="{Binding ShapeDrawMode,Converter={dd:ConverterValueMapToBool Parameter='DirectLine'}, ConverterParameter='DirectLine'}" Icon="{iconPacks:Material Kind=FountainPenTip}" />
+                    <Fluent:SplitButton Header="形状" GroupName="DrawMode" IsCheckable="True" IsChecked="{Binding DrawingDrawModeSelected}"  Width="50" VerticalAlignment="Top">
+                        <Fluent:MenuItem Header="橡皮檫" Size="Middle" IsCheckable="True" IsChecked="{Binding DrawingDrawMode,Converter={dd:ConverterValueMapToBool Parameter='Eraser'}, ConverterParameter='Eraser'}" Icon="{iconPacks:Material Kind=Eraser}" />
+                        <Fluent:MenuItem Header="矩形工具" Size="Middle" IsCheckable="True" IsChecked="{Binding DrawingDrawMode,Converter={dd:ConverterValueMapToBool Parameter='Rectangle'}, ConverterParameter='Rectangle'}" Icon="{iconPacks:Material Kind=RectangleOutline}" />
+                        <Fluent:MenuItem Header="椭圆工具" Size="Middle" IsCheckable="True" IsChecked="{Binding DrawingDrawMode,Converter={dd:ConverterValueMapToBool Parameter='Ellipse'}, ConverterParameter='Ellipse'}" Icon="{iconPacks:Material Kind=EllipseOutline}" />
+                        <Fluent:MenuItem Header="线条工具" Size="Middle" IsCheckable="True" IsChecked="{Binding DrawingDrawMode,Converter={dd:ConverterValueMapToBool Parameter='Line'}, ConverterParameter='Line'}" Icon="{iconPacks:Material Kind=Minus}" />
+                        <Fluent:MenuItem Header="铅笔工具" Size="Middle" IsCheckable="True" IsChecked="{Binding DrawingDrawMode,Converter={dd:ConverterValueMapToBool Parameter='Polyline'}, ConverterParameter='Polyline'}" Icon="{iconPacks:Material Kind=Pencil}" />
+                        <Fluent:MenuItem Header="闭合铅笔" Size="Middle" IsCheckable="True" IsChecked="{Binding DrawingDrawMode,Converter={dd:ConverterValueMapToBool Parameter='Polygon'}, ConverterParameter='Polygon'}" Icon="{iconPacks:Material Kind=Pencil}" />
+                        <Fluent:MenuItem Header="钢笔工具" Size="Middle" IsCheckable="True" IsChecked="{Binding DrawingDrawMode,Converter={dd:ConverterValueMapToBool Parameter='DirectLine'}, ConverterParameter='DirectLine'}" Icon="{iconPacks:Material Kind=FountainPenTip}" />
                         <Fluent:SplitButton.Style>
                             <Style TargetType="{x:Type Fluent:SplitButton}" BasedOn="{StaticResource RibbonSplitButtonStyle}">
                                 <Setter Property="LargeIcon">
@@ -929,35 +931,49 @@
                                     </Setter.Value>
                                 </Setter>
                                 <Style.Triggers>
-                                    <DataTrigger Binding="{Binding ShapeDrawMode}" Value="Line">
+                                    <DataTrigger Binding="{Binding DrawingDrawMode}" Value="Eraser">
+                                        <Setter Property="LargeIcon">
+                                            <Setter.Value>
+                                                <iconPacks:PackIconMaterial Kind="Eraser" VerticalAlignment="Center" HorizontalAlignment="Center"/>
+                                            </Setter.Value>
+                                        </Setter>
+                                    </DataTrigger>
+                                    <DataTrigger Binding="{Binding DrawingDrawMode}" Value="Line">
                                         <Setter Property="LargeIcon">
                                             <Setter.Value>
                                                 <iconPacks:PackIconMaterial Kind="Minus" VerticalAlignment="Center" HorizontalAlignment="Center"/>
                                             </Setter.Value>
                                         </Setter>
                                     </DataTrigger>
-                                    <DataTrigger Binding="{Binding ShapeDrawMode}" Value="Rectangle">
+                                    <DataTrigger Binding="{Binding DrawingDrawMode}" Value="Rectangle">
                                         <Setter Property="LargeIcon">
                                             <Setter.Value>
                                                 <iconPacks:PackIconMaterial Kind="RectangleOutline" VerticalAlignment="Center" HorizontalAlignment="Center"/>
                                             </Setter.Value>
                                         </Setter>
                                     </DataTrigger>
-                                    <DataTrigger Binding="{Binding ShapeDrawMode}" Value="Ellipse">
+                                    <DataTrigger Binding="{Binding DrawingDrawMode}" Value="Ellipse">
                                         <Setter Property="LargeIcon">
                                             <Setter.Value>
                                                 <iconPacks:PackIconMaterial Kind="EllipseOutline" VerticalAlignment="Center" HorizontalAlignment="Center"/>
                                             </Setter.Value>
                                         </Setter>
                                     </DataTrigger>
-                                    <DataTrigger Binding="{Binding ShapeDrawMode}" Value="Polyline">
+                                    <DataTrigger Binding="{Binding DrawingDrawMode}" Value="Polyline">
                                         <Setter Property="LargeIcon">
                                             <Setter.Value>
                                                 <iconPacks:PackIconMaterial Kind="Pencil" VerticalAlignment="Center" HorizontalAlignment="Center"/>
                                             </Setter.Value>
                                         </Setter>
                                     </DataTrigger>
-                                    <DataTrigger Binding="{Binding ShapeDrawMode}" Value="DirectLine">
+                                    <DataTrigger Binding="{Binding DrawingDrawMode}" Value="Polygon">
+                                        <Setter Property="LargeIcon">
+                                            <Setter.Value>
+                                                <iconPacks:PackIconMaterial Kind="Pencil" VerticalAlignment="Center" HorizontalAlignment="Center"/>
+                                            </Setter.Value>
+                                        </Setter>
+                                    </DataTrigger>
+                                    <DataTrigger Binding="{Binding DrawingDrawMode}" Value="DirectLine">
                                         <Setter Property="LargeIcon">
                                             <Setter.Value>
                                                 <iconPacks:PackIconMaterial Kind="FountainPenTip" VerticalAlignment="Center" HorizontalAlignment="Center"/>
diff --git a/AIStudio.Wpf.DiagramDesigner.Additionals/AIStudio.Wpf.DiagramDesigner.Additionals_1bxs5c25_wpftmp.csproj b/AIStudio.Wpf.DiagramDesigner.Additionals/AIStudio.Wpf.DiagramDesigner.Additionals_1bxs5c25_wpftmp.csproj
new file mode 100644
index 0000000..4af40a4
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner.Additionals/AIStudio.Wpf.DiagramDesigner.Additionals_1bxs5c25_wpftmp.csproj
@@ -0,0 +1,228 @@
+<Project>
+  <PropertyGroup>
+    <AssemblyName>AIStudio.Wpf.DiagramDesigner.Additionals</AssemblyName>
+    <IntermediateOutputPath>obj\Debug\</IntermediateOutputPath>
+    <BaseIntermediateOutputPath>obj\</BaseIntermediateOutputPath>
+    <MSBuildProjectExtensionsPath>F:\aistudio.-wpf.-diagram\AIStudio.Wpf.DiagramDesigner.Additionals\obj\</MSBuildProjectExtensionsPath>
+    <_TargetAssemblyProjectName>AIStudio.Wpf.DiagramDesigner.Additionals</_TargetAssemblyProjectName>
+  </PropertyGroup>
+  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk.WindowsDesktop" />
+  <PropertyGroup>
+    <UseWPF>true</UseWPF>
+    <UseWindowsForms>true</UseWindowsForms>
+    <Company>AIStudio.Wpf.Controls</Company>
+    <Authors>akwkevin</Authors>
+    <PackageProjectUrl>https://gitee.com/akwkevin</PackageProjectUrl>
+    <PackageIcon>A.png</PackageIcon>
+    <PackageIconUrl />
+    <NeutralLanguage />
+    <Version>1.0.1</Version>
+    <Description>一个Wpf的Diagram控件帮助库</Description>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="Fluent.Ribbon" Version="8.0.3" />
+    <PackageReference Include="MahApps.Metro.IconPacks" Version="4.8.0" />
+    <PackageReference Include="AIStudio.Wpf.Svg2XamlExtension" Version="1.2.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+    <PackageReference Include="ZXing.Net" Version="0.16.8" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\AIStudio.Wpf.DiagramDesigner\AIStudio.Wpf.DiagramDesigner.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="A.png">
+      <Pack>True</Pack>
+      <PackagePath>
+      </PackagePath>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <ReferencePath Include="F:\aistudio.-wpf.-diagram\AIStudio.Wpf.DiagramDesigner\bin\Debug\net461\AIStudio.Wpf.DiagramDesigner.dll" />
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+    <Compile Include="F:\aistudio.-wpf.-diagram\AIStudio.Wpf.DiagramDesigner.Additionals\obj\Debug\net461\Controls\SliderRotation.g.cs" />
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+  <ItemGroup>
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+    <Analyzer Include="C:\Users\Administrator\.nuget\packages\wpfanalyzers\3.5.4\analyzers\dotnet\cs\WpfAnalyzers.dll" />
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+</Project>
\ No newline at end of file
diff --git a/AIStudio.Wpf.DiagramDesigner.Additionals/AIStudio.Wpf.DiagramDesigner.Additionals_laj4hzo0_wpftmp.csproj b/AIStudio.Wpf.DiagramDesigner.Additionals/AIStudio.Wpf.DiagramDesigner.Additionals_laj4hzo0_wpftmp.csproj
new file mode 100644
index 0000000..5c41357
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner.Additionals/AIStudio.Wpf.DiagramDesigner.Additionals_laj4hzo0_wpftmp.csproj
@@ -0,0 +1,302 @@
+<Project>
+  <PropertyGroup>
+    <AssemblyName>AIStudio.Wpf.DiagramDesigner.Additionals</AssemblyName>
+    <IntermediateOutputPath>obj\Debug\</IntermediateOutputPath>
+    <BaseIntermediateOutputPath>obj\</BaseIntermediateOutputPath>
+    <MSBuildProjectExtensionsPath>F:\aistudio.-wpf.-diagram\AIStudio.Wpf.DiagramDesigner.Additionals\obj\</MSBuildProjectExtensionsPath>
+    <_TargetAssemblyProjectName>AIStudio.Wpf.DiagramDesigner.Additionals</_TargetAssemblyProjectName>
+  </PropertyGroup>
+  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk.WindowsDesktop" />
+  <PropertyGroup>
+    <UseWPF>true</UseWPF>
+    <UseWindowsForms>true</UseWindowsForms>
+    <Company>AIStudio.Wpf.Controls</Company>
+    <Authors>akwkevin</Authors>
+    <PackageProjectUrl>https://gitee.com/akwkevin</PackageProjectUrl>
+    <PackageIcon>A.png</PackageIcon>
+    <PackageIconUrl />
+    <NeutralLanguage />
+    <Version>1.0.1</Version>
+    <Description>一个Wpf的Diagram控件帮助库</Description>
+  </PropertyGroup>
+  <ItemGroup>
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+    <PackageReference Include="MahApps.Metro.IconPacks" Version="4.8.0" />
+    <PackageReference Include="AIStudio.Wpf.Svg2XamlExtension" Version="1.2.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+    <PackageReference Include="ZXing.Net" Version="0.16.8" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\AIStudio.Wpf.DiagramDesigner\AIStudio.Wpf.DiagramDesigner.csproj" />
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+  <ItemGroup>
+    <None Include="A.png">
+      <Pack>True</Pack>
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+      </PackagePath>
+    </None>
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+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Threading.Overlapped.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Threading.Tasks.Dataflow.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Threading.Tasks.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Threading.Tasks.Extensions.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Threading.Tasks.Parallel.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Threading.Thread.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Threading.ThreadPool.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Threading.Timer.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Transactions.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Transactions.Local.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.ValueTuple.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Web.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Web.HttpUtility.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\System.Windows.Controls.Ribbon.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Windows.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\System.Windows.Extensions.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\System.Windows.Forms.Design.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\System.Windows.Forms.Design.Editors.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\System.Windows.Forms.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\System.Windows.Forms.Primitives.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\System.Windows.Input.Manipulations.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\System.Windows.Presentation.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\System.Xaml.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Xml.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Xml.Linq.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Xml.ReaderWriter.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Xml.Serialization.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Xml.XDocument.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Xml.XmlDocument.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Xml.XmlSerializer.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Xml.XPath.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\System.Xml.XPath.XDocument.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\UIAutomationClient.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\UIAutomationClientSideProviders.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\UIAutomationProvider.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\UIAutomationTypes.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\WindowsBase.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\WindowsFormsIntegration.dll" />
+    <ReferencePath Include="C:\Users\Administrator\.nuget\packages\wpfanimatedgif\2.0.0\lib\netcoreapp3.0\WpfAnimatedGif.dll" />
+    <ReferencePath Include="C:\Users\Administrator\.nuget\packages\zxing.net\0.16.8\lib\net6.0\zxing.dll" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="F:\aistudio.-wpf.-diagram\AIStudio.Wpf.DiagramDesigner.Additionals\obj\Debug\net6.0-windows\Controls\Barcode.g.cs" />
+    <Compile Include="F:\aistudio.-wpf.-diagram\AIStudio.Wpf.DiagramDesigner.Additionals\obj\Debug\net6.0-windows\Controls\GradientStopControl.g.cs" />
+    <Compile Include="F:\aistudio.-wpf.-diagram\AIStudio.Wpf.DiagramDesigner.Additionals\obj\Debug\net6.0-windows\Controls\SliderRotation.g.cs" />
+    <Compile Include="F:\aistudio.-wpf.-diagram\AIStudio.Wpf.DiagramDesigner.Additionals\obj\Debug\net6.0-windows\GeneratedInternalTypeHelper.g.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <Analyzer Include="C:\Program Files\dotnet\sdk\7.0.101\Sdks\Microsoft.NET.Sdk\targets\..\analyzers\Microsoft.CodeAnalysis.CSharp.NetAnalyzers.dll" />
+    <Analyzer Include="C:\Program Files\dotnet\sdk\7.0.101\Sdks\Microsoft.NET.Sdk\targets\..\analyzers\Microsoft.CodeAnalysis.NetAnalyzers.dll" />
+    <Analyzer Include="C:\Users\Administrator\.nuget\packages\wpfanalyzers\3.5.4\analyzers\dotnet\cs\Gu.Roslyn.Extensions.dll" />
+    <Analyzer Include="C:\Users\Administrator\.nuget\packages\wpfanalyzers\3.5.4\analyzers\dotnet\cs\WpfAnalyzers.dll" />
+    <Analyzer Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\analyzers/dotnet/cs/System.Text.Json.SourceGeneration.dll" />
+    <Analyzer Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\analyzers/dotnet/System.Windows.Forms.Analyzers.dll" />
+    <Analyzer Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\analyzers/dotnet/cs/System.Windows.Forms.Analyzers.CSharp.dll" />
+  </ItemGroup>
+  <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk.WindowsDesktop" />
+</Project>
\ No newline at end of file
diff --git a/AIStudio.Wpf.DiagramDesigner.Additionals/Controls/RectangleGrid.cs b/AIStudio.Wpf.DiagramDesigner.Additionals/Controls/RectangleGrid.cs
index feadb79..70bdd68 100644
--- a/AIStudio.Wpf.DiagramDesigner.Additionals/Controls/RectangleGrid.cs
+++ b/AIStudio.Wpf.DiagramDesigner.Additionals/Controls/RectangleGrid.cs
@@ -261,7 +261,7 @@ namespace AIStudio.Wpf.DiagramDesigner.Additionals.Controls
             RectangleGridEventArgs oldArgs = e.OldValue as RectangleGridEventArgs;
             RectangleGridEventArgs newArgs = e.NewValue as RectangleGridEventArgs;
 
-            //grid.FillRectangle(newArgs.Row, newArgs.Column);
+            //grid.FillableRectangle(newArgs.Row, newArgs.Column);
 
             grid.OnSelectColumnChanged(oldArgs, newArgs);
         }
diff --git a/AIStudio.Wpf.DiagramDesigner/AIStudio.Wpf.DiagramDesigner.csproj b/AIStudio.Wpf.DiagramDesigner/AIStudio.Wpf.DiagramDesigner.csproj
index 9e01a53..c4a703a 100644
--- a/AIStudio.Wpf.DiagramDesigner/AIStudio.Wpf.DiagramDesigner.csproj
+++ b/AIStudio.Wpf.DiagramDesigner/AIStudio.Wpf.DiagramDesigner.csproj
@@ -66,5 +66,9 @@
       <SubType>Designer</SubType>
     </Page>
   </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="ViewModels\DrawingViewModel\Fillable\" />
+  </ItemGroup>
   
 </Project>
\ No newline at end of file
diff --git a/AIStudio.Wpf.DiagramDesigner/Adorners/DrawingRubberbandAdorner.cs b/AIStudio.Wpf.DiagramDesigner/Adorners/DrawingRubberbandAdorner.cs
new file mode 100644
index 0000000..6386f94
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/Adorners/DrawingRubberbandAdorner.cs
@@ -0,0 +1,191 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Shapes;
+using AIStudio.Wpf.DiagramDesigner.ViewModels;
+using AIStudio.Wpf.DiagramDesigner.ViewModels.BaseViewModel;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class DrawingRubberbandAdorner : Adorner
+    {
+        private Brush _rubberbandBrush;
+        private Pen _rubberbandPen;
+
+        private DesignerCanvas _designerCanvas;
+
+        private IDiagramViewModel _viewModel
+        {
+            get
+            {
+                return _designerCanvas.DataContext as IDiagramViewModel;
+            }
+        }
+        private IDiagramServiceProvider _service
+        {
+            get
+            {
+                return DiagramServicesProvider.Instance.Provider;
+            }
+        }
+
+        private DrawMode DrawMode
+        {
+            get
+            {
+                if (_viewModel.DrawModeViewModel != null)
+                {
+                    return _viewModel.DrawModeViewModel.GetDrawMode();
+                }
+                else
+                {
+                    return _service.DrawModeViewModel.GetDrawMode();
+                }
+            }
+        }
+
+
+        private DrawingDesignerItemViewModelBase _drawingDesignerItem;
+        public DrawingRubberbandAdorner(DesignerCanvas designerCanvas, Point dragStartPoint)
+            : base(designerCanvas)
+        {
+            this._designerCanvas = designerCanvas;
+            this._designerCanvas.Focus();
+
+            if (DrawMode == DrawMode.Eraser)
+            {
+                _drawingDesignerItem = new EraserDrawingDesignerItemViewModel(_viewModel, dragStartPoint);
+
+                _rubberbandBrush = new SolidColorBrush(Colors.Red) { Opacity = 0.5 };
+                _rubberbandPen = new Pen(new SolidColorBrush(Colors.Red) { Opacity = 0.5 }, _drawingDesignerItem.ColorViewModel.LineWidth);
+            }
+            else if (DrawMode >= DrawMode.Line && DrawMode <= DrawMode.DirectLine)
+            {
+                if (DrawMode == DrawMode.Line)
+                {
+                    _drawingDesignerItem = new LineDrawingDesignerItemViewModel(_viewModel, dragStartPoint, true);
+                }
+                else if (DrawMode == DrawMode.Rectangle)
+                {
+                    _drawingDesignerItem = new RectangleDrawingDesignerItemViewModel(_viewModel, dragStartPoint, true);
+                }
+                else if (DrawMode == DrawMode.Ellipse)
+                {
+                    _drawingDesignerItem = new EllipseDrawingDesignerItemViewModel(_viewModel, dragStartPoint, true);
+                }
+                else if (DrawMode == DrawMode.Polyline)
+                {
+                    _drawingDesignerItem = new PolylineDrawingDesignerItemViewModel(_viewModel, dragStartPoint, true);
+                }
+                else if (DrawMode == DrawMode.Polygon)
+                {
+                    _drawingDesignerItem = new PolygonDrawingDesignerItemViewModel(_viewModel, dragStartPoint, true);
+                }
+                else if (DrawMode == DrawMode.DirectLine)
+                {
+                    _drawingDesignerItem = new DirectLineDrawingDesignerItemViewModel(_viewModel, dragStartPoint, true);
+                }
+
+                _rubberbandBrush = null;//ColorObject.ToBrush(_drawingDesignerItem.ColorViewModel.FillColor);
+                _rubberbandPen = new Pen(ColorObject.ToBrush(_drawingDesignerItem.ColorViewModel.LineColor), _drawingDesignerItem.ColorViewModel.LineWidth);
+                _rubberbandPen.DashStyle = new DashStyle(StrokeDashArray.Dash[(int)_drawingDesignerItem.ColorViewModel.LineDashStyle], 1);
+            }
+            else if (DrawMode >= DrawMode.FillableLine && DrawMode <= DrawMode.FillableDirectLine)
+            {
+                if (DrawMode == DrawMode.FillableLine)
+                {
+                    _drawingDesignerItem = new LineDrawingDesignerItemViewModel(_viewModel, dragStartPoint, false);
+                }
+                else if (DrawMode == DrawMode.FillableRectangle)
+                {
+                    _drawingDesignerItem = new RectangleDrawingDesignerItemViewModel(_viewModel, dragStartPoint, false);
+                }
+                else if (DrawMode == DrawMode.FillableEllipse)
+                {
+                    _drawingDesignerItem = new EllipseDrawingDesignerItemViewModel(_viewModel, dragStartPoint, false);
+                }
+                else if (DrawMode == DrawMode.FillablePolyline)
+                {
+                    _drawingDesignerItem = new PolylineDrawingDesignerItemViewModel(_viewModel, dragStartPoint, false);
+                }
+                else if (DrawMode == DrawMode.FillablePolygon)
+                {
+                    _drawingDesignerItem = new PolygonDrawingDesignerItemViewModel(_viewModel, dragStartPoint, false);
+                }
+                else if (DrawMode == DrawMode.FillableDirectLine)
+                {
+                    _drawingDesignerItem = new DirectLineDrawingDesignerItemViewModel(_viewModel, dragStartPoint, false);
+                }
+
+                _rubberbandBrush = ColorObject.ToBrush(_drawingDesignerItem.ColorViewModel.FillColor);
+                _rubberbandPen = new Pen(ColorObject.ToBrush(_drawingDesignerItem.ColorViewModel.LineColor), _drawingDesignerItem.ColorViewModel.LineWidth);
+                _rubberbandPen.DashStyle = new DashStyle(StrokeDashArray.Dash[(int)_drawingDesignerItem.ColorViewModel.LineDashStyle], 1);
+            }
+        }
+
+        protected override void OnMouseMove(System.Windows.Input.MouseEventArgs e)
+        {
+            if (_drawingDesignerItem.OnMouseMove(this, e) == true)
+            {
+                if (!this.IsMouseCaptured)
+                    this.CaptureMouse();
+
+                this.InvalidateVisual();
+            }
+            else
+            {
+                if (this.IsMouseCaptured) this.ReleaseMouseCapture();
+            }
+
+            e.Handled = true;
+        }
+
+        protected override void OnMouseUp(System.Windows.Input.MouseButtonEventArgs e)
+        {
+            if (_drawingDesignerItem.OnMouseUp(this, e) == false)
+            {
+                return;
+            }
+
+            // release mouse capture
+            if (this.IsMouseCaptured) this.ReleaseMouseCapture();
+
+            // remove this adorner from adorner layer
+            AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this._designerCanvas);
+            if (adornerLayer != null)
+                adornerLayer.Remove(this);
+
+            if (_drawingDesignerItem.IsFinish == true)
+            {
+                _viewModel.AddItemCommand.Execute(_drawingDesignerItem);
+            }
+
+            e.Handled = true;
+        }
+
+        protected override void OnMouseDown(MouseButtonEventArgs e)
+        {
+            _drawingDesignerItem.OnMouseDown(this, e);
+
+            e.Handled = true;
+        }
+
+        protected override void OnRender(DrawingContext dc)
+        {
+            base.OnRender(dc);
+
+            // without a background the OnMouseMove event would not be fired !
+            // Alternative: implement a Canvas as a child of this adorner, like
+            // the ConnectionAdorner does.
+            dc.DrawRectangle(Brushes.Transparent, null, new Rect(RenderSize));
+
+            dc.DrawGeometry(_rubberbandBrush, _rubberbandPen, _drawingDesignerItem.Geometry);
+        }
+    }
+}
diff --git a/AIStudio.Wpf.DiagramDesigner/Adorners/RubberbandAdorner.cs b/AIStudio.Wpf.DiagramDesigner/Adorners/RubberbandAdorner.cs
index ff5164b..e9e3e87 100644
--- a/AIStudio.Wpf.DiagramDesigner/Adorners/RubberbandAdorner.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Adorners/RubberbandAdorner.cs
@@ -1,14 +1,14 @@
-using System.Windows;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
-using System;
-using System.Collections.Generic;
-using System.Linq;
 using AIStudio.Wpf.DiagramDesigner.ViewModels;
 using AIStudio.Wpf.DiagramDesigner.ViewModels.BaseViewModel;
-using System.Windows.Threading;
 
 namespace AIStudio.Wpf.DiagramDesigner
 {
@@ -16,7 +16,7 @@ namespace AIStudio.Wpf.DiagramDesigner
     {
         private Point? startPoint;
         private Point? endPoint;
-        private List<Point> pointList = new List<Point>();    
+        private List<Point> pointList = new List<Point>();
         private Pen rubberbandPen;
 
         private DesignerCanvas _designerCanvas;
@@ -43,6 +43,7 @@ namespace AIStudio.Wpf.DiagramDesigner
             this._designerCanvas.Focus();
             this.startPoint = dragStartPoint;
             rubberbandPen = new Pen(Brushes.LightSlateGray, 1);
+
             rubberbandPen.DashStyle = new DashStyle(new double[] { 2 }, 1);
         }
 
@@ -54,33 +55,6 @@ namespace AIStudio.Wpf.DiagramDesigner
                     this.CaptureMouse();
 
                 endPoint = e.GetPosition(this);
-                if (this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Polyline)
-                {
-                    if (pointList.Count == 0 && this.startPoint.HasValue)
-                    {
-                        pointList.Add(this.startPoint.Value);
-                    }
-                    //点不需要保存的太密集了
-                    if ((endPoint.Value - pointList.Last()).Length >= 1)
-                    {
-                        pointList.Add(endPoint.Value);
-                    }
-                }
-
-                UpdateSelection();
-                this.InvalidateVisual();
-            }
-            else if (this._service.DrawModeViewModel.GetDrawMode() == DrawMode.DirectLine)
-            {
-                if (!this.IsMouseCaptured)
-                    this.CaptureMouse();
-
-                endPoint = e.GetPosition(this);
-
-                if (pointList.Count == 0 && this.startPoint.HasValue)
-                {
-                    pointList.Add(this.startPoint.Value);
-                }
 
                 UpdateSelection();
                 this.InvalidateVisual();
@@ -95,25 +69,6 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         protected override void OnMouseUp(System.Windows.Input.MouseButtonEventArgs e)
         {
-            if (this._service.DrawModeViewModel.GetDrawMode() == DrawMode.DirectLine && e.ChangedButton == MouseButton.Left)
-            {
-                //按着ctrl自动封闭曲线
-                if (Keyboard.IsKeyDown(Key.LeftCtrl) == true || Keyboard.IsKeyDown(Key.RightCtrl) == true)
-                {                   
-                    pointList.Add(this.startPoint.Value);                                    
-                }
-                else
-                {
-                    endPoint = e.GetPosition(this);
-                    pointList.Add(endPoint.Value);
-
-                    UpdateSelection();
-                    this.InvalidateVisual();
-
-                    return;
-                }
-            }
-
             // release mouse capture
             if (this.IsMouseCaptured) this.ReleaseMouseCapture();
 
@@ -122,13 +77,7 @@ namespace AIStudio.Wpf.DiagramDesigner
             if (adornerLayer != null)
                 adornerLayer.Remove(this);
 
-            if (this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Line ||
-                this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Rectangle ||
-                this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Ellipse ||
-                this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Polyline ||
-                this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Polygon ||
-                this._service.DrawModeViewModel.GetDrawMode() == DrawMode.DirectLine ||
-                this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Text)
+            if (this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Text)
             {
                 if (this.startPoint.HasValue && this.endPoint.HasValue)
                 {
@@ -143,18 +92,6 @@ namespace AIStudio.Wpf.DiagramDesigner
 
                         _viewModel.AddItemCommand.Execute(itemBase);
                     }
-                    else if (this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Polyline
-                        || this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Polygon
-                        || this._service.DrawModeViewModel.GetDrawMode() == DrawMode.DirectLine)
-                    {
-                        ShapeDesignerItemViewModel itemBase = new ShapeDesignerItemViewModel(this._service.DrawModeViewModel.GetDrawMode(), pointList);
-                        _viewModel.AddItemCommand.Execute(itemBase);
-                    }
-                    else
-                    {
-                        ShapeDesignerItemViewModel itemBase = new ShapeDesignerItemViewModel(this._service.DrawModeViewModel.GetDrawMode(), new List<Point> { this.startPoint.Value, this.endPoint.Value });
-                        _viewModel.AddItemCommand.Execute(itemBase);
-                    }
                 }
                 this._service.DrawModeViewModel.ResetDrawMode();
             }
@@ -173,45 +110,7 @@ namespace AIStudio.Wpf.DiagramDesigner
 
             if (this.startPoint.HasValue && this.endPoint.HasValue)
             {
-                if (this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Line)
-                {
-                    dc.DrawLine(rubberbandPen, this.startPoint.Value, this.endPoint.Value);
-                }
-                else if (this._service.DrawModeViewModel.GetDrawMode() == DrawMode.Ellipse)
-                {
-                    var centerPoint = new Point((this.startPoint.Value.X + this.endPoint.Value.X) / 2, (this.startPoint.Value.Y + this.endPoint.Value.Y) / 2);
-                    dc.DrawEllipse(Brushes.Transparent, rubberbandPen, centerPoint, Math.Abs(this.startPoint.Value.X - this.endPoint.Value.X) / 2, Math.Abs(this.startPoint.Value.Y - this.endPoint.Value.Y) / 2);
-                }
-                else if (_service.DrawModeViewModel.GetDrawMode() == DrawMode.Polyline)
-                {
-                    var disList = pointList.ToList();
-                    for (int i = 1; i < pointList.Count; i++)
-                    {
-                        dc.DrawLine(rubberbandPen, disList[i - 1], disList[i]);
-                    }
-                }
-                else if (_service.DrawModeViewModel.GetDrawMode() == DrawMode.DirectLine)
-                {
-                    var disList = pointList.ToList();
-                    //按着ctrl自动封闭曲线
-                    if (Keyboard.IsKeyDown(Key.LeftCtrl) == true || Keyboard.IsKeyDown(Key.RightCtrl) == true)
-                    {
-                        disList.Add(this.startPoint.Value);
-                    }
-                    else
-                    {
-                        disList.Add(this.endPoint.Value);
-                    }
-
-                    for (int i = 1; i < disList.Count; i++)
-                    {
-                        dc.DrawLine(rubberbandPen, disList[i - 1], disList[i]);
-                    }
-                }
-                else
-                {
-                    dc.DrawRectangle(Brushes.Transparent, rubberbandPen, new Rect(this.startPoint.Value, this.endPoint.Value));
-                }
+                dc.DrawRectangle(Brushes.Transparent, rubberbandPen, new Rect(this.startPoint.Value, this.endPoint.Value));
             }
         }
 
diff --git a/AIStudio.Wpf.DiagramDesigner/Controls/DesignerCanvas.cs b/AIStudio.Wpf.DiagramDesigner/Controls/DesignerCanvas.cs
index 471b77a..1f51f22 100644
--- a/AIStudio.Wpf.DiagramDesigner/Controls/DesignerCanvas.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Controls/DesignerCanvas.cs
@@ -121,36 +121,6 @@ namespace AIStudio.Wpf.DiagramDesigner
             }
         }
 
-        private bool EnableSnapping
-        {
-            get
-            {
-                if (_viewModel.DrawModeViewModel != null)
-                {
-                    return _viewModel.DrawModeViewModel.EnableSnapping;
-                }
-                else
-                {
-                    return _service.DrawModeViewModel.EnableSnapping;
-                }
-            }
-        }
-
-        private double SnappingRadius
-        {
-            get
-            {
-                if (_viewModel.DrawModeViewModel != null)
-                {
-                    return _viewModel.DrawModeViewModel.SnappingRadius;
-                }
-                else
-                {
-                    return _service.DrawModeViewModel.SnappingRadius;
-                }
-            }
-        }
-
         #region GridCellSize
 
         public static readonly DependencyProperty GridCellSizeProperty =
@@ -390,6 +360,19 @@ namespace AIStudio.Wpf.DiagramDesigner
                             SourceConnector = new Connector() { Content = new PartCreatedConnectorInfo(currentPoint.X, currentPoint.Y), Tag = "虚拟的连接点" };
                         }
                     }
+                    else if (_service.DrawModeViewModel.DrawingDrawModeSelected)
+                    {
+                        // create rubberband adorner
+                        AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
+                        if (adornerLayer != null)
+                        {
+                            DrawingRubberbandAdorner adorner = new DrawingRubberbandAdorner(this, currentPoint);
+                            if (adorner != null)
+                            {
+                                adornerLayer.Add(adorner);
+                            }
+                        }
+                    }
 
                     e.Handled = true;
                 }
@@ -433,7 +416,7 @@ namespace AIStudio.Wpf.DiagramDesigner
                         SinkConnector.Info.DisableAttachTo = true;
                     }
 
-                    if (EnableSnapping)
+                    if (_viewModel.DiagramOption.SnappingOption.EnableSnapping)
                     {
                         var nearPort = _viewModel.FindNearPortToAttachTo(partialConnection);
                         if (nearPort != null)
@@ -510,10 +493,7 @@ namespace AIStudio.Wpf.DiagramDesigner
             SinkConnector = null;
             partialConnection = null;
 
-            if (_service.DrawModeViewModel.GetDrawMode() != DrawMode.DirectLine)
-            {
-                _service.DrawModeViewModel.ResetDrawMode();
-            }
+            _service.DrawModeViewModel.ResetDrawMode();
         }
 
         protected override void OnPreviewKeyDown(KeyEventArgs e)
@@ -657,6 +637,6 @@ namespace AIStudio.Wpf.DiagramDesigner
             e.Handled = true;
 
             this.Focus();
-        }       
+        }
     }
 }
\ No newline at end of file
diff --git a/AIStudio.Wpf.DiagramDesigner/Converters/ColorBrushConverter.cs b/AIStudio.Wpf.DiagramDesigner/Converters/ColorBrushConverter.cs
index 32616c2..bfe54e6 100644
--- a/AIStudio.Wpf.DiagramDesigner/Converters/ColorBrushConverter.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Converters/ColorBrushConverter.cs
@@ -22,175 +22,7 @@ namespace AIStudio.Wpf.DiagramDesigner
             }
             else if (value is ColorObject colorObject)
             {
-                if (colorObject.BrushType == BrushType.None)
-                    brush = new SolidColorBrush(Colors.Transparent);
-                else if (colorObject.BrushType == BrushType.SolidColorBrush)
-                    brush = new SolidColorBrush(colorObject.Color);
-                else if (colorObject.BrushType == BrushType.LinearGradientBrush)
-                {
-                    Point startPoint;
-                    Point endPoint;
-                    if (colorObject.LinearOrientation == LinearOrientation.LeftToRight)
-                    {
-                        startPoint = new Point(0, 0.5);
-                        endPoint = new Point(1, 0.5);
-                    }
-                    else if (colorObject.LinearOrientation == LinearOrientation.LeftTopToRightBottom)
-                    {
-                        startPoint = new Point(0, 0);
-                        endPoint = new Point(1, 1);
-                    }
-                    else if (colorObject.LinearOrientation == LinearOrientation.TopToBottom)
-                    {
-                        startPoint = new Point(0.5, 0);
-                        endPoint = new Point(0.5, 1);
-                    }
-                    else if (colorObject.LinearOrientation == LinearOrientation.RightTopToLeftBottom)
-                    {
-                        startPoint = new Point(1, 0);
-                        endPoint = new Point(0, 1);
-                    }
-                    else if (colorObject.LinearOrientation == LinearOrientation.RightToLeft)
-                    {
-                        startPoint = new Point(1, 0.5);
-                        endPoint = new Point(0, 0.5);
-                    }
-                    else if (colorObject.LinearOrientation == LinearOrientation.RightBottomToLeftTop)
-                    {
-                        startPoint = new Point(1, 1);
-                        endPoint = new Point(0, 0);
-                    }
-                    else if (colorObject.LinearOrientation == LinearOrientation.BottomToTop)
-                    {
-                        startPoint = new Point(0.5, 1);
-                        endPoint = new Point(0.5, 0);
-                    }
-                    else if (colorObject.LinearOrientation == LinearOrientation.LeftBottomToRightTop)
-                    {
-                        startPoint = new Point(0, 1);
-                        endPoint = new Point(1, 0);
-                    }
-                    else
-                    {
-                        startPoint = new Point(0, 0.5);
-                        endPoint = new Point(1, 0.5);
-                    }
-
-                    LinearGradientBrush myBrush = new LinearGradientBrush();
-                    myBrush.StartPoint = startPoint;
-                    myBrush.EndPoint = endPoint;
-                    if (colorObject.GradientStop != null)
-                    {
-                        foreach (var stop in colorObject.GradientStop)
-                        {
-                            myBrush.GradientStops.Add(new System.Windows.Media.GradientStop(stop.Color, stop.Offset));
-                        }
-                    }
-                    brush = myBrush;
-
-                    RotateTransform rotateTransform = new RotateTransform(colorObject.Angle, 0.5, 0.5);
-                    myBrush.RelativeTransform = rotateTransform;
-                }
-                else if (colorObject.BrushType == BrushType.RadialGradientBrush)
-                {
-                    Point center;
-                    Point gradientOrigin;
-                    double radiusX;
-                    double radiusY;
-
-                    if (colorObject.RadialOrientation == RadialOrientation.LeftTop)
-                    {
-                        center = new Point(0, 0);
-                        gradientOrigin = center;
-                        radiusX = 1;
-                        radiusY = 1;
-                    }
-                    else if (colorObject.RadialOrientation == RadialOrientation.RightTop)
-                    {
-                        center = new Point(1, 0);
-                        gradientOrigin = center;
-                        radiusX = 1;
-                        radiusY = 1;
-                    }
-                    else if (colorObject.RadialOrientation == RadialOrientation.RightBottom)
-                    {
-                        center = new Point(1, 1);
-                        gradientOrigin = center;
-                        radiusX = 1;
-                        radiusY = 1;
-                    }
-                    else if (colorObject.RadialOrientation == RadialOrientation.LeftBottom)
-                    {
-                        center = new Point(0, 1);
-                        gradientOrigin = center;
-                        radiusX = 1;
-                        radiusY = 1;
-                    }
-                    else
-                    {
-                        center = new Point(0.5, 0.5);
-                        gradientOrigin = center;
-                        radiusX = 0.5;
-                        radiusY = 0.5;
-                    }
-
-                    RadialGradientBrush myBrush = new RadialGradientBrush();
-                    myBrush.Center = center;
-                    myBrush.GradientOrigin = gradientOrigin;
-                    myBrush.RadiusX = radiusX;
-                    myBrush.RadiusY = radiusY;
-                    if (colorObject.GradientStop != null)
-                    {
-                        foreach (var stop in colorObject.GradientStop)
-                        {
-                            myBrush.GradientStops.Add(new System.Windows.Media.GradientStop(stop.Color, stop.Offset));
-                        }
-                    }
-                    brush = myBrush;
-
-                    RotateTransform rotateTransform = new RotateTransform(colorObject.Angle, 0.5, 0.5);
-                    myBrush.RelativeTransform = rotateTransform;
-                }
-                else if (colorObject.BrushType == BrushType.ImageBrush)
-                {
-                    ImageBrush myBrush = new ImageBrush();
-                    myBrush.ImageSource = new BitmapImage(new Uri(colorObject.Image, UriKind.Absolute));
-                    brush = myBrush;
-                }
-                else if (colorObject.BrushType == BrushType.DrawingBrush)
-                {
-                    DrawingBrush myBrush = new DrawingBrush();
-
-                    GeometryDrawing backgroundSquare =
-                        new GeometryDrawing(
-                            Brushes.White,
-                            null,
-                            new RectangleGeometry(new Rect(0, 0, 100, 100)));
-
-                    GeometryGroup aGeometryGroup = new GeometryGroup();
-                    aGeometryGroup.Children.Add(new RectangleGeometry(new Rect(0, 0, 50, 50)));
-                    aGeometryGroup.Children.Add(new RectangleGeometry(new Rect(50, 50, 50, 50)));
-
-                    LinearGradientBrush checkerBrush = new LinearGradientBrush();
-                    checkerBrush.GradientStops.Add(new System.Windows.Media.GradientStop(Colors.Black, 0.0));
-                    checkerBrush.GradientStops.Add(new System.Windows.Media.GradientStop(Colors.Gray, 1.0));
-
-                    GeometryDrawing checkers = new GeometryDrawing(checkerBrush, null, aGeometryGroup);
-
-                    DrawingGroup checkersDrawingGroup = new DrawingGroup();
-                    checkersDrawingGroup.Children.Add(backgroundSquare);
-                    checkersDrawingGroup.Children.Add(checkers);
-
-                    myBrush.Drawing = checkersDrawingGroup;
-                    myBrush.Viewport = new Rect(0, 0, 0.25, 0.25);
-                    myBrush.TileMode = TileMode.Tile;
-
-                    brush = myBrush;
-                }
-                if (brush != null)
-                {
-                    brush.Opacity = colorObject.Opacity;
-                }
+                brush = ColorObject.ToBrush(colorObject);
             }
             else if (value is ObservableCollection<GradientStop> gradientStop)
             {
diff --git a/AIStudio.Wpf.DiagramDesigner/Converters/NegativeConverter.cs b/AIStudio.Wpf.DiagramDesigner/Converters/NegativeConverter.cs
new file mode 100644
index 0000000..bd84d5b
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/Converters/NegativeConverter.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Data;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class NegativeConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+        {
+            if (value is double)
+            {
+                return 0 - (double)value;
+            }
+
+            return value;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
diff --git a/AIStudio.Wpf.DiagramDesigner/Enums/DrawMode.cs b/AIStudio.Wpf.DiagramDesigner/Enums/DrawMode.cs
index 9d8aa1a..564f26c 100644
--- a/AIStudio.Wpf.DiagramDesigner/Enums/DrawMode.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Enums/DrawMode.cs
@@ -6,17 +6,26 @@ namespace AIStudio.Wpf.DiagramDesigner
 {
     public enum DrawMode
     {
-        Normal = 0,
-        Line = 1,
-        Rectangle = 2,
-        Ellipse = 3,
-        Polyline = 4,
-        Polygon = 5,
-        DirectLine = 6,
+        Normal = 0,       
         ConnectingLineSmooth = 10,
         ConnectingLineStraight = 11,
         ConnectingLineCorner = 12,
-        ConnectingLineBoundary = 13,        
-        Text = 20,
+        ConnectingLineBoundary = 13,
+        //101-110为可部分擦除的形状
+        Eraser = 100,
+        Line = 101,
+        Rectangle = 102,
+        Ellipse = 103,
+        Polyline = 104,
+        Polygon = 105,
+        DirectLine = 106,
+        //不可部分擦除
+        FillableLine = 111,
+        FillableRectangle = 112,
+        FillableEllipse = 113,
+        FillablePolyline = 114,
+        FillablePolygon = 115,
+        FillableDirectLine = 116,
+        Text = 200,
     }
 }
diff --git a/AIStudio.Wpf.DiagramDesigner/Themes/DesignerItem.xaml b/AIStudio.Wpf.DiagramDesigner/Themes/DesignerItem.xaml
index cc89fa8..0124b4b 100644
--- a/AIStudio.Wpf.DiagramDesigner/Themes/DesignerItem.xaml
+++ b/AIStudio.Wpf.DiagramDesigner/Themes/DesignerItem.xaml
@@ -8,8 +8,9 @@
 
     <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
     <dd:ColorBrushConverter x:Key="ColorBrushConverter" />
-    <dd:ClipConverter x:Key="ClipConverter"/>  
-    
+    <dd:ClipConverter x:Key="ClipConverter"/>
+    <dd:NegativeConverter x:Key="NegativeConverter"/>
+
     <DataTemplate DataType="{x:Type dd:DefaultDesignerItemViewModel}">
         <Grid IsHitTestVisible="False">
             <Rectangle StrokeThickness="1" Fill="{Binding ColorViewModel.FillColor,Converter={StaticResource ColorBrushConverter}}" Stroke="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}" />
@@ -25,102 +26,36 @@
         </Grid>
     </DataTemplate>
 
-    <DataTemplate DataType="{x:Type dd:ShapeDesignerItemViewModel}">
-        <Grid IsHitTestVisible="False" Background="White">
-            <Grid.ContextMenu>
-                <ContextMenu>
-                    <MenuItem Header="显示点" IsCheckable="True" IsChecked="{Binding ShowConnectors}" />
-                </ContextMenu>
-            </Grid.ContextMenu>
+    <DataTemplate DataType="{x:Type dd:DrawingDesignerItemViewModelBase}">
+        <Grid IsHitTestVisible="False">
             <Control x:Name="control" />
         </Grid>
         <DataTemplate.Triggers>
-            <DataTrigger Binding="{Binding DrawMode}" Value="Line">
+            <DataTrigger Binding="{Binding Erasable}" Value="True">
                 <Setter TargetName="control" Property="Template">
                     <Setter.Value>
                         <ControlTemplate>
-                            <Line X1="{Binding ConnectionPoints[0].X}" Y1="{Binding ConnectionPoints[0].Y}" 
-                                  X2="{Binding ConnectionPoints[1].X}" Y2="{Binding ConnectionPoints[1].Y}" 
-                                  Stroke="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}" 
-                                  StrokeThickness="{Binding ColorViewModel.LineWidth}"
-                                  Stretch="Fill"></Line>
+                            <Path Fill="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}"
+                              Data="{Binding Geometry}">
+                            </Path>
                         </ControlTemplate>
                     </Setter.Value>
                 </Setter>
             </DataTrigger>
-            <DataTrigger Binding="{Binding DrawMode}" Value="Rectangle">
+            <DataTrigger Binding="{Binding Erasable}" Value="False">
                 <Setter TargetName="control" Property="Template">
                     <Setter.Value>
                         <ControlTemplate>
-                            <Rectangle 
-                                  Stroke="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}" 
-                                  StrokeThickness="{Binding ColorViewModel.LineWidth}"
-                                  Fill="{Binding ColorViewModel.FillColor,Converter={StaticResource ColorBrushConverter}}"
-                                  Stretch="Fill"></Rectangle>
+                            <Path StrokeThickness="{Binding ColorViewModel.LineWidth}"  
+                                  StrokeDashArray="{Binding ColorViewModel.LineDashStyle,Converter={StaticResource LineDashConverter}}"
+                                  Stroke="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}"
+                                  Fill="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}"
+                                  Data="{Binding Geometry}">
+                            </Path>
                         </ControlTemplate>
                     </Setter.Value>
                 </Setter>
             </DataTrigger>
-            <DataTrigger Binding="{Binding DrawMode}" Value="Ellipse">
-                <Setter TargetName="control" Property="Template">
-                    <Setter.Value>
-                        <ControlTemplate>
-                            <Ellipse 
-                                  Stroke="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}" 
-                                  StrokeThickness="{Binding ColorViewModel.LineWidth}"
-                                  Fill="{Binding ColorViewModel.FillColor,Converter={StaticResource ColorBrushConverter}}"
-                                  Stretch="Fill"></Ellipse>
-                        </ControlTemplate>
-                    </Setter.Value>
-                </Setter>
-            </DataTrigger>
-            <DataTrigger Binding="{Binding DrawMode}" Value="Polyline">
-                <Setter TargetName="control" Property="Template">
-                    <Setter.Value>
-                        <ControlTemplate>
-                            <Polyline
-                                  Points="{Binding ConnectionPoints, Converter={x:Static dd:ConnectionPointConverter.Instance}}"
-                                  Stroke="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}" 
-                                  StrokeThickness="{Binding ColorViewModel.LineWidth}"
-                                  Fill="{Binding ColorViewModel.FillColor,Converter={StaticResource ColorBrushConverter}}"
-                                  FillRule="Nonzero"
-                                  Stretch="Fill"></Polyline>
-                        </ControlTemplate>
-                    </Setter.Value>
-                </Setter>
-            </DataTrigger>
-            <DataTrigger Binding="{Binding DrawMode}" Value="Polygon">
-                <Setter TargetName="control" Property="Template">
-                    <Setter.Value>
-                        <ControlTemplate>
-                            <Polygon
-                                  Points="{Binding ConnectionPoints, Converter={x:Static dd:ConnectionPointConverter.Instance}}"
-                                  Stroke="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}" 
-                                  StrokeThickness="{Binding ColorViewModel.LineWidth}"
-                                  Fill="{Binding ColorViewModel.FillColor,Converter={StaticResource ColorBrushConverter}}"
-                                  FillRule="Nonzero"
-                                  Stretch="Fill"></Polygon>
-                        </ControlTemplate>
-                    </Setter.Value>
-                </Setter>
-            </DataTrigger>
-            <DataTrigger Binding="{Binding DrawMode}" Value="DirectLine">
-                <Setter TargetName="control" Property="Template">
-                    <Setter.Value>
-                        <ControlTemplate>
-                            <Polyline
-                                  Points="{Binding ConnectionPoints, Converter={x:Static dd:ConnectionPointConverter.Instance}}"
-                                  Stroke="{Binding ColorViewModel.LineColor,Converter={StaticResource ColorBrushConverter}}" 
-                                  StrokeThickness="{Binding ColorViewModel.LineWidth}"
-                                  Fill="{Binding ColorViewModel.FillColor,Converter={StaticResource ColorBrushConverter}}"
-                                  FillRule="Nonzero"
-                                  Stretch="Fill"></Polyline>
-                        </ControlTemplate>
-                    </Setter.Value>
-                </Setter>
-            </DataTrigger>
-
-
         </DataTemplate.Triggers>
     </DataTemplate>
 
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/ColorViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/ColorViewModel.cs
index 3e76899..41ca426 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/ColorViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/ColorViewModel.cs
@@ -8,6 +8,7 @@ using System.Threading;
 using System.Windows;
 using System.Windows.Input;
 using System.Windows.Media;
+using System.Windows.Media.Imaging;
 
 namespace AIStudio.Wpf.DiagramDesigner
 {
@@ -126,7 +127,7 @@ namespace AIStudio.Wpf.DiagramDesigner
                     RaisePropertyChanged(nameof(LineWidth));
                 }
             }
-        }       
+        }
 
         private LineDashStyle _lineDashStyle = LineDashStyle.None;
         [CanDo]
@@ -221,8 +222,6 @@ namespace AIStudio.Wpf.DiagramDesigner
             }
             set
             {
-                var xx = this.GetHashCode();
-                var yy = Thread.CurrentThread.ManagedThreadId.ToString();
                 SetProperty(ref _color, value);
             }
         }
@@ -391,8 +390,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
             get
             {
-                return new SimpleCommand(para =>
-                {
+                return new SimpleCommand(para => {
                     var offset = GradientStop.Skip(GradientStop.Count - 2).Select(p => p.Offset).Average();
                     GradientStop.Add(new GradientStop(Colors.Gray, offset));
                 });
@@ -402,8 +400,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
             get
             {
-                return new SimpleCommand(para =>
-                {
+                return new SimpleCommand(para => {
                     if (SelectedGradientStop != null && GradientStop != null && GradientStop.Count > 2)
                     {
                         GradientStop.Remove(SelectedGradientStop);
@@ -411,21 +408,231 @@ namespace AIStudio.Wpf.DiagramDesigner
                 });
             }
         }
+
+        public static Brush ToBrush(IColorObject colorObject)
+        {
+            Brush brush = null;
+
+            if (colorObject.BrushType == BrushType.None)
+                brush = new SolidColorBrush(Colors.Transparent);
+            else if (colorObject.BrushType == BrushType.SolidColorBrush)
+                brush = new SolidColorBrush(colorObject.Color);
+            else if (colorObject.BrushType == BrushType.LinearGradientBrush)
+            {
+                Point startPoint;
+                Point endPoint;
+                if (colorObject.LinearOrientation == LinearOrientation.LeftToRight)
+                {
+                    startPoint = new Point(0, 0.5);
+                    endPoint = new Point(1, 0.5);
+                }
+                else if (colorObject.LinearOrientation == LinearOrientation.LeftTopToRightBottom)
+                {
+                    startPoint = new Point(0, 0);
+                    endPoint = new Point(1, 1);
+                }
+                else if (colorObject.LinearOrientation == LinearOrientation.TopToBottom)
+                {
+                    startPoint = new Point(0.5, 0);
+                    endPoint = new Point(0.5, 1);
+                }
+                else if (colorObject.LinearOrientation == LinearOrientation.RightTopToLeftBottom)
+                {
+                    startPoint = new Point(1, 0);
+                    endPoint = new Point(0, 1);
+                }
+                else if (colorObject.LinearOrientation == LinearOrientation.RightToLeft)
+                {
+                    startPoint = new Point(1, 0.5);
+                    endPoint = new Point(0, 0.5);
+                }
+                else if (colorObject.LinearOrientation == LinearOrientation.RightBottomToLeftTop)
+                {
+                    startPoint = new Point(1, 1);
+                    endPoint = new Point(0, 0);
+                }
+                else if (colorObject.LinearOrientation == LinearOrientation.BottomToTop)
+                {
+                    startPoint = new Point(0.5, 1);
+                    endPoint = new Point(0.5, 0);
+                }
+                else if (colorObject.LinearOrientation == LinearOrientation.LeftBottomToRightTop)
+                {
+                    startPoint = new Point(0, 1);
+                    endPoint = new Point(1, 0);
+                }
+                else
+                {
+                    startPoint = new Point(0, 0.5);
+                    endPoint = new Point(1, 0.5);
+                }
+
+                LinearGradientBrush myBrush = new LinearGradientBrush();
+                myBrush.StartPoint = startPoint;
+                myBrush.EndPoint = endPoint;
+                if (colorObject.GradientStop != null)
+                {
+                    foreach (var stop in colorObject.GradientStop)
+                    {
+                        myBrush.GradientStops.Add(new System.Windows.Media.GradientStop(stop.Color, stop.Offset));
+                    }
+                }
+                brush = myBrush;
+
+                RotateTransform rotateTransform = new RotateTransform(colorObject.Angle, 0.5, 0.5);
+                myBrush.RelativeTransform = rotateTransform;
+            }
+            else if (colorObject.BrushType == BrushType.RadialGradientBrush)
+            {
+                Point center;
+                Point gradientOrigin;
+                double radiusX;
+                double radiusY;
+
+                if (colorObject.RadialOrientation == RadialOrientation.LeftTop)
+                {
+                    center = new Point(0, 0);
+                    gradientOrigin = center;
+                    radiusX = 1;
+                    radiusY = 1;
+                }
+                else if (colorObject.RadialOrientation == RadialOrientation.RightTop)
+                {
+                    center = new Point(1, 0);
+                    gradientOrigin = center;
+                    radiusX = 1;
+                    radiusY = 1;
+                }
+                else if (colorObject.RadialOrientation == RadialOrientation.RightBottom)
+                {
+                    center = new Point(1, 1);
+                    gradientOrigin = center;
+                    radiusX = 1;
+                    radiusY = 1;
+                }
+                else if (colorObject.RadialOrientation == RadialOrientation.LeftBottom)
+                {
+                    center = new Point(0, 1);
+                    gradientOrigin = center;
+                    radiusX = 1;
+                    radiusY = 1;
+                }
+                else
+                {
+                    center = new Point(0.5, 0.5);
+                    gradientOrigin = center;
+                    radiusX = 0.5;
+                    radiusY = 0.5;
+                }
+
+                RadialGradientBrush myBrush = new RadialGradientBrush();
+                myBrush.Center = center;
+                myBrush.GradientOrigin = gradientOrigin;
+                myBrush.RadiusX = radiusX;
+                myBrush.RadiusY = radiusY;
+                if (colorObject.GradientStop != null)
+                {
+                    foreach (var stop in colorObject.GradientStop)
+                    {
+                        myBrush.GradientStops.Add(new System.Windows.Media.GradientStop(stop.Color, stop.Offset));
+                    }
+                }
+                brush = myBrush;
+
+                RotateTransform rotateTransform = new RotateTransform(colorObject.Angle, 0.5, 0.5);
+                myBrush.RelativeTransform = rotateTransform;
+            }
+            else if (colorObject.BrushType == BrushType.ImageBrush)
+            {
+                ImageBrush myBrush = new ImageBrush();
+                myBrush.ImageSource = new BitmapImage(new Uri(colorObject.Image, UriKind.Absolute));
+                brush = myBrush;
+            }
+            else if (colorObject.BrushType == BrushType.DrawingBrush)
+            {
+                DrawingBrush myBrush = new DrawingBrush();
+
+                GeometryDrawing backgroundSquare =
+                    new GeometryDrawing(
+                        Brushes.White,
+                        null,
+                        new RectangleGeometry(new Rect(0, 0, 100, 100)));
+
+                GeometryGroup aGeometryGroup = new GeometryGroup();
+                aGeometryGroup.Children.Add(new RectangleGeometry(new Rect(0, 0, 50, 50)));
+                aGeometryGroup.Children.Add(new RectangleGeometry(new Rect(50, 50, 50, 50)));
+
+                LinearGradientBrush checkerBrush = new LinearGradientBrush();
+                checkerBrush.GradientStops.Add(new System.Windows.Media.GradientStop(Colors.Black, 0.0));
+                checkerBrush.GradientStops.Add(new System.Windows.Media.GradientStop(Colors.Gray, 1.0));
+
+                GeometryDrawing checkers = new GeometryDrawing(checkerBrush, null, aGeometryGroup);
+
+                DrawingGroup checkersDrawingGroup = new DrawingGroup();
+                checkersDrawingGroup.Children.Add(backgroundSquare);
+                checkersDrawingGroup.Children.Add(checkers);
+
+                myBrush.Drawing = checkersDrawingGroup;
+                myBrush.Viewport = new Rect(0, 0, 0.25, 0.25);
+                myBrush.TileMode = TileMode.Tile;
+
+                brush = myBrush;
+            }
+            if (brush != null)
+            {
+                brush.Opacity = colorObject.Opacity;
+            }
+
+            return brush;
+        }
     }
 
     public interface IColorObject
     {
-        BrushType BrushType { get; set; }
-        Color Color { get; set; }
-        ObservableCollection<GradientStop> GradientStop { get; set; }
-        Point StartPoint { get; set; }
-        Point EndPoint { get; set; }
-        double Opacity { get; set; }
-        LinearOrientation LinearOrientation { get; set; }
-        RadialOrientation RadialOrientation { get; set; }
-        int Angle { get; set; }
-        string Image { get; set; }
-        int SubType { get; set; }
+        BrushType BrushType
+        {
+            get; set;
+        }
+        Color Color
+        {
+            get; set;
+        }
+        ObservableCollection<GradientStop> GradientStop
+        {
+            get; set;
+        }
+        Point StartPoint
+        {
+            get; set;
+        }
+        Point EndPoint
+        {
+            get; set;
+        }
+        double Opacity
+        {
+            get; set;
+        }
+        LinearOrientation LinearOrientation
+        {
+            get; set;
+        }
+        RadialOrientation RadialOrientation
+        {
+            get; set;
+        }
+        int Angle
+        {
+            get; set;
+        }
+        string Image
+        {
+            get; set;
+        }
+        int SubType
+        {
+            get; set;
+        }
     }
 
     public class GradientStop : BindableBase
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/DrawModeViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/DrawModeViewModel.cs
index efd5712..81d48cd 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/DrawModeViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/DrawModeViewModel.cs
@@ -16,9 +16,9 @@ namespace AIStudio.Wpf.DiagramDesigner
             {
                 return LineDrawMode;
             }
-            else if (ShapeDrawModeSelected)
+            else if (DrawingDrawModeSelected)
             {
-                return ShapeDrawMode;
+                return DrawingDrawMode;
             }
             else if (TextDrawModeSelected)
             {
@@ -80,7 +80,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         }
 
         private bool _shapeDrawModeSelected;
-        public bool ShapeDrawModeSelected
+        public bool DrawingDrawModeSelected
         {
             get
             {
@@ -147,7 +147,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         }
 
         private DrawMode _shapeDrawMode = DrawMode.Rectangle;
-        public DrawMode ShapeDrawMode
+        public DrawMode DrawingDrawMode
         {
             get
             {
@@ -156,7 +156,7 @@ namespace AIStudio.Wpf.DiagramDesigner
             set
             {
                 SetProperty(ref _shapeDrawMode, value);
-                ShapeDrawModeSelected = true;
+                DrawingDrawModeSelected = true;
             }
         }
 
@@ -185,33 +185,7 @@ namespace AIStudio.Wpf.DiagramDesigner
             {
                 SetProperty(ref _cursorMode, value);
             }
-        }
-
-        private bool _enableSnapping;
-        public bool EnableSnapping
-        {
-            get
-            {
-                return _enableSnapping;
-            }
-            set
-            {
-                SetProperty(ref _enableSnapping, value);
-            }
-        }
-
-        private double _snappingRadius = 50;
-        public double SnappingRadius
-        {
-            get
-            {
-                return _snappingRadius;
-            }
-            set
-            {
-                SetProperty(ref _snappingRadius, value);
-            }
-        }
+        }       
 
     }
 }
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/Interface/IDrawModeViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/Interface/IDrawModeViewModel.cs
index de13d43..3873822 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/Interface/IDrawModeViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/AdditionViewModel/Interface/IDrawModeViewModel.cs
@@ -41,19 +41,11 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
             get; set;
         }
-        bool ShapeDrawModeSelected
+        bool DrawingDrawModeSelected
         {
             get; set;
         }
-        DrawMode ShapeDrawMode
-        {
-            get; set;
-        }
-        bool EnableSnapping
-        {
-            get; set;
-        }
-        double SnappingRadius
+        DrawMode DrawingDrawMode
         {
             get; set;
         }
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DiagramServicesProvider.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DiagramServicesProvider.cs
index 1deeb09..537b2e6 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DiagramServicesProvider.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/DiagramServicesProvider.cs
@@ -148,22 +148,22 @@ namespace AIStudio.Wpf.DiagramDesigner.ViewModels.BaseViewModel
             get; set;
         }
 
-        private SelectableDesignerItemViewModelBase _selectedItem;
+        private SelectableDesignerItemViewModelBase _selectedItemViewModel;
         public SelectableDesignerItemViewModelBase SelectedItemViewModel
         {
             get
             {
-                return _selectedItem;
+                return _selectedItemViewModel;
             }
             set
             {
-                if (_selectedItem != null)
+                if (_selectedItemViewModel != null)
                 {
-                    _selectedItem.PropertyChanged -= ViewModel_PropertyChanged;
+                    _selectedItemViewModel.PropertyChanged -= ViewModel_PropertyChanged;
                 }
-                if (SetProperty(ref _selectedItem, value))
+                if (SetProperty(ref _selectedItemViewModel, value))
                 {
-                    if (_selectedItem == null)
+                    if (_selectedItemViewModel == null)
                     {
                         ColorViewModel = GetOldValue<ColorViewModel>(nameof(ColorViewModel));
                         FontViewModel = GetOldValue<FontViewModel>(nameof(FontViewModel));
@@ -173,16 +173,16 @@ namespace AIStudio.Wpf.DiagramDesigner.ViewModels.BaseViewModel
                     }
                     else
                     {
-                        ColorViewModel = _selectedItem.ColorViewModel;
-                        FontViewModel = _selectedItem.FontViewModel;
-                        ShapeViewModel = _selectedItem.ShapeViewModel;
-                        AnimationViewModel = _selectedItem.AnimationViewModel;
-                        LockObjectViewModel = _selectedItem.LockObjectViewModel;
+                        ColorViewModel = _selectedItemViewModel.ColorViewModel;
+                        FontViewModel = _selectedItemViewModel.FontViewModel;
+                        ShapeViewModel = _selectedItemViewModel.ShapeViewModel;
+                        AnimationViewModel = _selectedItemViewModel.AnimationViewModel;
+                        LockObjectViewModel = _selectedItemViewModel.LockObjectViewModel;
                     }
                 }
-                if (_selectedItem != null)
+                if (_selectedItemViewModel != null)
                 {
-                    _selectedItem.PropertyChanged += ViewModel_PropertyChanged;
+                    _selectedItemViewModel.PropertyChanged += ViewModel_PropertyChanged;
                 }
             }
         }
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableDesignerItemViewModelBase.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableDesignerItemViewModelBase.cs
index b7f27f3..0c93b49 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableDesignerItemViewModelBase.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableDesignerItemViewModelBase.cs
@@ -71,7 +71,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
             get
             {
-                return this._editCommand ?? (this._editCommand = new SimpleCommand(Command_Enable, ExecuteSelectItemCommand));
+                return this._selectItemCommand ?? (this._selectItemCommand = new SimpleCommand(Command_Enable, ExecuteSelectItemCommand));
             }
         }
 
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableViewModelBase.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableViewModelBase.cs
index d9febc2..c9997be 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableViewModelBase.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableViewModelBase.cs
@@ -192,6 +192,10 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
             get
             {
+                if (IsHitTestVisible == false)
+                {
+                    return false;
+                }
                 return _isSelected;
             }
             set
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/DefaultViewModel/ShapeDesignerItemViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/DefaultViewModel/ShapeDesignerItemViewModel.cs
deleted file mode 100644
index 1f03d23..0000000
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/DefaultViewModel/ShapeDesignerItemViewModel.cs
+++ /dev/null
@@ -1,116 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Collections.ObjectModel;
-using System.Linq;
-using System.Text;
-using System.Windows;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Shapes;
-
-namespace AIStudio.Wpf.DiagramDesigner
-{
-    public class ShapeDesignerItemViewModel : DesignerItemViewModelBase
-    {
-        public ShapeDesignerItemViewModel() : this(null)
-        {
-
-        }
-
-        public ShapeDesignerItemViewModel(IDiagramViewModel root) : base(root)
-        {
-
-        }
-
-
-        public ShapeDesignerItemViewModel(DrawMode drawMode, List<Point> points) : this(null, drawMode, points)
-        {
-        }
-
-        public ShapeDesignerItemViewModel(IDiagramViewModel root, DrawMode drawMode, List<Point> points) : base(root)
-        {
-            DrawMode = drawMode;
-            ConnectionPoints = points;
-
-            ItemWidth = ConnectionPoints.Max(p => p.X) - ConnectionPoints.Min(p => p.X);
-            ItemHeight = ConnectionPoints.Max(p => p.Y) - ConnectionPoints.Min(p => p.Y);
-            Left = ConnectionPoints.Min(p => p.X);
-            Top = ConnectionPoints.Min(p => p.Y);          
-        }
-
-        private List<Point> _connectionPoints;
-        public List<Point> ConnectionPoints
-        {
-            get
-            {
-                return _connectionPoints;
-            }
-            private set
-            {
-                SetProperty(ref _connectionPoints, value);
-            }
-        }
-        public DrawMode DrawMode
-        {
-            get; set;
-        }
-
-        private bool _showConnectors = false;
-        public new bool ShowConnectors
-        {
-            get
-            {
-                return _showConnectors;
-            }
-            set
-            {
-                if (SetProperty(ref _showConnectors, value))
-                {
-      
-                }
-            }
-        }
-
-        public ICommand MenuItemCommand
-        {
-            get; private set;
-        }
-
-        private void UpdatePoints()
-        {
-            ItemWidth = ConnectionPoints.Max(p => p.X) - ConnectionPoints.Min(p => p.X);
-            ItemHeight = ConnectionPoints.Max(p => p.Y) - ConnectionPoints.Min(p => p.Y);
-            Left = ConnectionPoints.Min(p => p.X);
-            Top = ConnectionPoints.Min(p => p.Y);
-        }
-
-        protected override void Init(IDiagramViewModel root, bool initNew)
-        {          
-            MenuItemCommand = new SimpleCommand(Command_Enable, ExecuteMenuItemCommand);
-            base.Init(root, initNew);
-   
-            BuildMenuOptions();
-        }
-
-        protected override void InitNew()
-        {
-            this.ClearConnectors();
-        }
-
-        private void ExecuteMenuItemCommand(object obj)
-        {
-            ShowConnectors = (obj as CinchMenuItem).IsChecked;
-        }
-
-        private void BuildMenuOptions()
-        {
-            menuOptions = new ObservableCollection<CinchMenuItem>();
-            CinchMenuItem menuItem = new CinchMenuItem();
-            menuItem.Text = "显示点";
-            menuItem.IsCheckable = true;
-            menuItem.Command = MenuItemCommand;
-            menuItem.CommandParameter = menuItem;
-            menuOptions.Add(menuItem);
-        }
-    }
-}
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/DirectLineDrawingDesignerItemViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/DirectLineDrawingDesignerItemViewModel.cs
new file mode 100644
index 0000000..64dcf2f
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/DirectLineDrawingDesignerItemViewModel.cs
@@ -0,0 +1,146 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Media3D;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class DirectLineDrawingDesignerItemViewModel : DrawingDesignerItemViewModelBase
+    {
+        public DirectLineDrawingDesignerItemViewModel()
+        {
+        }
+
+        public DirectLineDrawingDesignerItemViewModel(IDiagramViewModel root) : base(root)
+        {
+        }
+
+        public DirectLineDrawingDesignerItemViewModel(IDiagramViewModel root, Point startPoint, bool erasable) : base(root, DrawMode.DirectLine, startPoint, erasable)
+        {
+        }
+
+        public DirectLineDrawingDesignerItemViewModel(IDiagramViewModel root, List<Point> points, bool erasable) : base(root, DrawMode.DirectLine, points, erasable)
+        {
+        }
+
+        public override bool OnMouseMove(IInputElement sender, MouseEventArgs e)
+        {
+            var point = e.GetPosition(sender);
+            if (Points == null || Points.Count == 0)//没有起始点
+            {
+                return true;
+            }
+
+            if ((Points.LastOrDefault() - point).Length < ColorViewModel.LineWidth)
+            {
+                return true;
+            }
+
+            //按着LeftShift自动封闭曲线
+            if (Keyboard.IsKeyDown(Key.LeftShift) == true)
+            {
+                point = Points[0];
+            }
+
+            if (Geometry is PathGeometry geometry)
+            {
+
+            }
+            else
+            {
+                geometry = new PathGeometry();
+                var figure = new PathFigure { StartPoint = Points[0] };
+                geometry.Figures.Add(figure);
+            }
+
+            LineSegment arc = new LineSegment(point, true);
+
+            var preLine = geometry.Figures[0].Segments.LastOrDefault();
+            if (preLine != _lastLine)
+            {
+                geometry.Figures[0].Segments.Remove(preLine);
+            }
+            geometry.Figures[0].Segments.Add(arc);
+            Geometry = geometry;
+
+            return true;
+        }
+
+        private LineSegment _lastLine;
+        public override bool OnMouseDown(IInputElement sender, MouseButtonEventArgs e)
+        {
+            //左键添加点
+            if (e.ChangedButton == MouseButton.Left)
+            {
+                var point = e.GetPosition(sender);
+                if (Points == null || Points.Count == 0)//没有起始点
+                {
+                    return true;
+                }
+
+                if ((Points.LastOrDefault() - point).Length < ColorViewModel.LineWidth)
+                {
+                    return true;
+                }
+                //按着LeftShift自动封闭曲线
+                if (Keyboard.IsKeyDown(Key.LeftShift) == true)
+                {
+                    point = Points[0];
+                }
+                Points.Add(point);
+
+                if (Geometry is PathGeometry geometry)
+                {
+
+                }
+                else
+                {
+                    geometry = new PathGeometry();
+                    var figure = new PathFigure { StartPoint = Points[0] };
+                    geometry.Figures.Add(figure);
+                }
+
+                var preLine = geometry.Figures[0].Segments.LastOrDefault();
+                if (preLine != _lastLine)
+                {
+                    geometry.Figures[0].Segments.Remove(preLine);
+                }
+
+                _lastLine = new LineSegment(point, true);
+                geometry.Figures[0].Segments.Add(_lastLine);
+                Geometry = geometry;
+
+                IsFinish = true;
+            }
+            return true;
+        }
+
+        public override bool OnMouseUp(IInputElement sender, MouseButtonEventArgs e)
+        {
+            if (e.ChangedButton == MouseButton.Left && Keyboard.IsKeyDown(Key.LeftShift) == false)//按着LeftShift自动封闭曲线
+            {
+                return false;
+            }
+            else
+            {
+                if (Geometry is PathGeometry geometry)
+                {
+                    var preLine = geometry.Figures[0].Segments.LastOrDefault();
+                    if (preLine != _lastLine)
+                    {
+                        geometry.Figures[0].Segments.Remove(preLine);
+                    }
+
+                    _lastLine = null;
+                    Geometry = geometry;
+                }
+                return base.OnMouseUp(sender, e);
+            }
+        }
+    }
+}
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/DrawingDesignerItemViewModelBase.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/DrawingDesignerItemViewModelBase.cs
new file mode 100644
index 0000000..2c96fa6
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/DrawingDesignerItemViewModelBase.cs
@@ -0,0 +1,148 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Media3D;
+using System.Windows.Shapes;
+using System.Windows.Controls;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class DrawingDesignerItemViewModelBase : DesignerItemViewModelBase
+    {
+        public DrawingDesignerItemViewModelBase() : this(null)
+        {
+
+        }
+
+        public DrawingDesignerItemViewModelBase(IDiagramViewModel root) : base(root)
+        {
+
+        }
+
+        public DrawingDesignerItemViewModelBase(IDiagramViewModel root, DrawMode drawMode, Point startPoint, bool erasable) : this(root, drawMode, new List<Point> { startPoint }, erasable)
+        {
+          
+        }
+
+        public DrawingDesignerItemViewModelBase(IDiagramViewModel root, DrawMode drawMode, List<Point> points, bool erasable) : base(root)
+        {
+            DrawMode = drawMode;
+            Points = points;
+            Erasable = erasable;
+        }
+
+        public virtual bool OnMouseMove(IInputElement sender, MouseEventArgs e)
+        {
+            return true;
+        }
+
+        public virtual bool OnMouseDown(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return true;
+        }
+
+        public virtual bool OnMouseUp(IInputElement sender, MouseButtonEventArgs e)
+        {
+            if (IsFinish)
+            {
+                UpdateLocation();
+
+                Geometry.Transform = new TranslateTransform(0 - Left, 0 - Top);
+
+                if (Erasable)
+                {
+                    var aPen = new Pen(ColorObject.ToBrush(ColorViewModel.LineColor), ColorViewModel.LineWidth);                   
+                    Geometry = Geometry.GetWidenedPathGeometry(aPen); //可擦除，需要把Geometry转成几何图像，所以不能有填充色
+                }
+               
+            }
+            return true;
+        }
+
+        public virtual bool Erase(Geometry erase)
+        {
+            if (Erasable)
+            {
+                erase.Transform = new TranslateTransform(0 - Left, 0 - Top);
+                Geometry = Geometry.Combine(Geometry, erase, GeometryCombineMode.Exclude, null);
+
+                if (Geometry.IsEmpty())
+                    return true;
+            }
+            else
+            {
+                //var area = erase.GetArea();
+                //if (area > 10)
+                //{
+                    return true;
+                //}
+            }
+            return false;
+        }
+
+        public bool Erasable
+        {
+            get;set;
+        }
+
+        private Geometry _geometry;
+        public Geometry Geometry
+        {
+            get
+            {
+                return _geometry;
+            }
+            set
+            {
+                SetProperty(ref _geometry, value);
+            }
+        }
+
+        public bool IsFinish
+        {
+            get; set;
+        }
+
+        private List<Point> _points;
+        public List<Point> Points
+        {
+            get
+            {
+                return _points;
+            }
+            set
+            {
+                SetProperty(ref _points, value);
+            }
+        }
+        public DrawMode DrawMode
+        {
+            get; set;
+        }
+
+        public void UpdateLocation()
+        {
+            ItemWidth = Geometry.Bounds.Width + ColorViewModel.LineWidth;
+            ItemHeight = Geometry.Bounds.Height + ColorViewModel.LineWidth;
+            Left = Geometry.Bounds.Left;
+            Top = Geometry.Bounds.Top;
+        }
+
+        protected override void Init(IDiagramViewModel root, bool initNew)
+        {
+            base.Init(root, initNew);
+            IsHitTestVisible = false;
+        }
+
+        protected override void InitNew()
+        {
+            ClearConnectors();
+        }
+
+    }
+}
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/EllipseDrawingDesignerItemViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/EllipseDrawingDesignerItemViewModel.cs
new file mode 100644
index 0000000..f05f9fa
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/EllipseDrawingDesignerItemViewModel.cs
@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class EllipseDrawingDesignerItemViewModel : DrawingDesignerItemViewModelBase
+    {
+        public EllipseDrawingDesignerItemViewModel()
+        {
+        }
+
+        public EllipseDrawingDesignerItemViewModel(IDiagramViewModel root) : base(root)
+        {
+        }
+
+        public EllipseDrawingDesignerItemViewModel(IDiagramViewModel root, Point startPoint, bool erasable) : base(root, DrawMode.Rectangle, startPoint, erasable)
+        {
+        }
+
+        public EllipseDrawingDesignerItemViewModel(IDiagramViewModel root, List<Point> points, bool erasable) : base(root, DrawMode.Rectangle, points, erasable)
+        {
+        }
+
+        public override bool OnMouseMove(IInputElement sender, MouseEventArgs e)
+        {
+            if (e.LeftButton == MouseButtonState.Pressed)
+            {
+                var point = e.GetPosition(sender);
+                if (Points == null || Points.Count == 0)//没有起始点
+                {
+                    return true;
+                }
+
+                if ((Points[0] - point).Length < ColorViewModel.LineWidth)
+                {
+                    return true;
+                }
+
+                if (Keyboard.IsKeyDown(Key.LeftShift))//圆形
+                {
+                    var len =Math.Abs(point.X - Points[0].X);//按X轴放大
+                    point = new Point(Points[0].X + (point.X > Points[0].X ? len : -len), Points[0].Y + (point.Y > Points[0].Y ? len : -len));
+                }
+
+                if (Points.Count == 2)
+                {
+                    Points[1] = point;
+                }
+                else
+                {
+                    Points.Add(point);
+                }
+                Geometry = new EllipseGeometry(new Rect(Points[0], Points[1]));
+                IsFinish = true;
+
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        public override bool OnMouseDown(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return true;
+        }
+
+        public override bool OnMouseUp(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return base.OnMouseUp(sender, e);
+        }
+    }
+}
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/EraserDrawingDesignerItemViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/EraserDrawingDesignerItemViewModel.cs
new file mode 100644
index 0000000..bc5b650
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/EraserDrawingDesignerItemViewModel.cs
@@ -0,0 +1,133 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Media;
+using SvgPathProperties;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class EraserDrawingDesignerItemViewModel : DrawingDesignerItemViewModelBase
+    {
+        public EraserDrawingDesignerItemViewModel()
+        {
+        }
+
+        public EraserDrawingDesignerItemViewModel(IDiagramViewModel root) : base(root)
+        {
+        }
+
+        public EraserDrawingDesignerItemViewModel(IDiagramViewModel root, Point startPoint) : base(root, DrawMode.Eraser, startPoint, true)
+        {
+        }
+
+        public EraserDrawingDesignerItemViewModel(IDiagramViewModel root, List<Point> points) : base(root, DrawMode.Eraser, points, true)
+        {
+        }
+
+        public override bool OnMouseMove(IInputElement sender, MouseEventArgs e)
+        {
+            if (e.LeftButton == MouseButtonState.Pressed)
+            {
+                var point = e.GetPosition(sender);
+                if (Points == null || Points.Count == 0)//没有起始点
+                {
+                    return true;
+                }
+                if ((Points[0] - point).Length < ColorViewModel.LineWidth)
+                {
+                    return true;
+                }
+               
+                PathGeometry geometry;
+                PathFigure figure;
+                if (Keyboard.IsKeyDown(Key.LeftShift) && Geometry != null)//预览模式，一并擦除
+                {
+                    geometry = (PathGeometry)Geometry;
+                    figure = geometry.Figures[0];
+                }
+                else
+                {
+                    geometry = new PathGeometry();
+                    figure = new PathFigure { IsClosed = true, IsFilled = true };
+                    geometry.Figures.Add(figure);
+                }
+              
+                var radius = ColorViewModel.LineWidth / 2;
+                var positiveX = radius * (point.X >  Points[0].X ? 1 : -1);
+                var positiveY = radius * (point.Y >  Points[0].Y ? 1 : -1);
+
+                figure.StartPoint = new Point( Points[0].X - positiveX,  Points[0].Y - positiveY);
+
+                var line = new LineSegment(new Point( Points[0].X + positiveX,  Points[0].Y - positiveY), false);
+                figure.Segments.Add(line);
+
+                line = new LineSegment(new Point(point.X + positiveX, point.Y - positiveY), false);
+                figure.Segments.Add(line);
+
+                line = new LineSegment(new Point(point.X + positiveX, point.Y + positiveY), false);
+                figure.Segments.Add(line);
+
+                line = new LineSegment(new Point(point.X - positiveX, point.Y + positiveY), false);
+                figure.Segments.Add(line);
+
+                line = new LineSegment(new Point( Points[0].X - positiveX,  Points[0].Y + positiveY), false);
+                figure.Segments.Add(line);
+
+                Points[0] = point;
+                Geometry = geometry;
+                if (Keyboard.IsKeyDown(Key.LeftShift))//预览模式，一并擦除
+                {
+
+                }
+                else
+                {                  
+                    Erase(Geometry);
+                }
+
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        public override bool OnMouseDown(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return true;
+        }
+
+        public override bool OnMouseUp(IInputElement sender, MouseButtonEventArgs e)
+        {
+            if (Geometry != null)
+            {
+                Erase(Geometry);
+            }
+            return base.OnMouseUp(sender, e);
+        }
+
+        private new bool Erase(Geometry geometry)
+        {
+            var empty = true;
+            List<DrawingDesignerItemViewModelBase> deleteDrawGeometries = new List<DrawingDesignerItemViewModelBase>();
+            foreach (var g in this.Root.Items.OfType<DrawingDesignerItemViewModelBase>())
+            {
+                if (g.Erase(geometry))
+                    deleteDrawGeometries.Add(g);
+                else
+                    empty = false;
+            }
+
+            foreach (var g in deleteDrawGeometries)
+            {
+                this.Root.Remove(g);
+            }
+
+            return empty;
+        }
+    }
+}
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/LineDrawingDesignerItemViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/LineDrawingDesignerItemViewModel.cs
new file mode 100644
index 0000000..5681cde
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/LineDrawingDesignerItemViewModel.cs
@@ -0,0 +1,77 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class LineDrawingDesignerItemViewModel : DrawingDesignerItemViewModelBase
+    {
+        public LineDrawingDesignerItemViewModel()
+        {
+        }
+
+        public LineDrawingDesignerItemViewModel(IDiagramViewModel root) : base(root)
+        {
+        }
+
+        public LineDrawingDesignerItemViewModel(IDiagramViewModel root, Point startPoint, bool erasable) : base(root, DrawMode.Line, startPoint, erasable)
+        {                    
+        }
+
+        public LineDrawingDesignerItemViewModel(IDiagramViewModel root, List<Point> points, bool erasable) : base(root, DrawMode.Line, points, erasable)
+        {
+
+        }
+
+        public override bool OnMouseMove(IInputElement sender, MouseEventArgs e)
+        {
+            if (e.LeftButton == MouseButtonState.Pressed)
+            {
+                var point = e.GetPosition(sender);
+                if (Points == null || Points.Count == 0)//没有起始点
+                {
+                    return true;
+                }
+
+                if ((Points[0] - point).Length < ColorViewModel.LineWidth)
+                {
+                    return true;
+                }
+
+                if (Points.Count == 2)
+                {
+                    Points[1] = point;
+                }
+                else
+                {
+                    Points.Add(point);
+                }
+
+                Geometry = new LineGeometry(Points[0], Points[1]);
+                IsFinish = true;
+
+                return true;
+            }
+            else
+            {
+                return false;
+            }                 
+        }
+
+        public override bool OnMouseDown(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return true;
+        }
+
+        public override bool OnMouseUp(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return base.OnMouseUp(sender, e);
+        }     
+    }
+}
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/PolygonDrawingDesignerItemViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/PolygonDrawingDesignerItemViewModel.cs
new file mode 100644
index 0000000..2d0da84
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/PolygonDrawingDesignerItemViewModel.cs
@@ -0,0 +1,82 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class PolygonDrawingDesignerItemViewModel : DrawingDesignerItemViewModelBase
+    {
+        public PolygonDrawingDesignerItemViewModel()
+        {
+        }
+
+        public PolygonDrawingDesignerItemViewModel(IDiagramViewModel root) : base(root)
+        {
+        }
+
+        public PolygonDrawingDesignerItemViewModel(IDiagramViewModel root, Point startPoint, bool erasable) : base(root, DrawMode.Line, startPoint, erasable)
+        {
+        }
+
+        public PolygonDrawingDesignerItemViewModel(IDiagramViewModel root, List<Point> points, bool erasable) : base(root, DrawMode.Line, points, erasable)
+        {
+
+        }
+
+        public override bool OnMouseMove(IInputElement sender, MouseEventArgs e)
+        {
+            if (e.LeftButton == MouseButtonState.Pressed)
+            {
+                var point = e.GetPosition(sender);
+                if (Points == null || Points.Count == 0)//没有起始点
+                {
+                    return true;
+                }
+
+                if ((Points.LastOrDefault() - point).Length < ColorViewModel.LineWidth)
+                {
+                    return true;
+                }
+
+
+                Points.Add(point);
+
+                if (Geometry is PathGeometry geometry)
+                {
+
+                }
+                else
+                {
+                    geometry = new PathGeometry();
+                    var figure = new PathFigure { StartPoint = Points[0] };
+                    figure.IsClosed = true;
+                    geometry.Figures.Add(figure);
+                }
+
+                LineSegment arc = new LineSegment(point, true) { IsSmoothJoin = true };
+                geometry.Figures[0].Segments.Add(arc);
+                Geometry = geometry;
+
+                IsFinish = true;
+
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        public override bool OnMouseDown(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return true;
+        }
+
+        public override bool OnMouseUp(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return base.OnMouseUp(sender, e);
+        }
+    }
+}
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/PolylineDrawingDesignerItemViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/PolylineDrawingDesignerItemViewModel.cs
new file mode 100644
index 0000000..ebdfcfc
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/PolylineDrawingDesignerItemViewModel.cs
@@ -0,0 +1,86 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class PolylineDrawingDesignerItemViewModel : DrawingDesignerItemViewModelBase
+    {
+        public PolylineDrawingDesignerItemViewModel()
+        {
+        }
+
+        public PolylineDrawingDesignerItemViewModel(IDiagramViewModel root) : base(root)
+        {
+        }
+
+        public PolylineDrawingDesignerItemViewModel(IDiagramViewModel root, Point startPoint, bool erasable) : base(root, DrawMode.Line, startPoint, erasable)
+        {
+        }
+
+        public PolylineDrawingDesignerItemViewModel(IDiagramViewModel root, List<Point> points, bool erasable) : base(root, DrawMode.Line, points, erasable)
+        {
+
+        }
+
+        public override bool OnMouseMove(IInputElement sender, MouseEventArgs e)
+        {
+            if (e.LeftButton == MouseButtonState.Pressed)
+            {
+                var point = e.GetPosition(sender);
+                if (Points == null || Points.Count == 0)//没有起始点
+                {
+                    return true;
+                }
+
+                if ((Points.LastOrDefault() - point).Length < ColorViewModel.LineWidth)
+                {
+                    return true;
+                }
+
+
+                Points.Add(point);
+
+                if (Geometry is PathGeometry geometry)
+                {
+
+                }
+                else
+                {
+                    geometry = new PathGeometry();
+                    var figure = new PathFigure { StartPoint = Points[0] };
+                    geometry.Figures.Add(figure);
+                }
+
+                LineSegment arc = new LineSegment(point, true);// { IsSmoothJoin = true };
+                geometry.Figures[0].Segments.Add(arc);
+                Geometry = geometry;
+
+                IsFinish = true;
+
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        public override bool OnMouseDown(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return true;
+        }
+
+        public override bool OnMouseUp(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return base.OnMouseUp(sender, e);
+        }
+    }
+}
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/RectangleDrawingDesignerItemViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/RectangleDrawingDesignerItemViewModel.cs
new file mode 100644
index 0000000..b4e8a07
--- /dev/null
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/DrawingViewModel/Erasable/RectangleDrawingDesignerItemViewModel.cs
@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class RectangleDrawingDesignerItemViewModel : DrawingDesignerItemViewModelBase
+    {
+        public RectangleDrawingDesignerItemViewModel()
+        {
+        }
+
+        public RectangleDrawingDesignerItemViewModel(IDiagramViewModel root) : base(root)
+        {
+        }
+
+        public RectangleDrawingDesignerItemViewModel(IDiagramViewModel root, Point startPoint, bool erasable) : base(root, DrawMode.Rectangle, startPoint, erasable)
+        {
+        }
+
+        public RectangleDrawingDesignerItemViewModel(IDiagramViewModel root, List<Point> points, bool erasable) : base(root, DrawMode.Rectangle, points, erasable)
+        {
+        }
+
+        public override bool OnMouseMove(IInputElement sender, MouseEventArgs e)
+        {
+            if (e.LeftButton == MouseButtonState.Pressed)
+            {
+                var point = e.GetPosition(sender);
+                if (Points == null || Points.Count == 0)//没有起始点
+                {
+                    return true;
+                }
+
+                if ((Points[0] - point).Length < ColorViewModel.LineWidth)
+                {
+                    return true;
+                }
+
+                if (Keyboard.IsKeyDown(Key.LeftShift))//正方形
+                {
+                    var len = Math.Abs(point.X - Points[0].X);//按X轴放大
+                    point = new Point(Points[0].X + (point.X > Points[0].X ? len : -len), Points[0].Y + (point.Y > Points[0].Y ? len : -len));
+                }
+
+                if (Points.Count == 2)
+                {
+                    Points[1] = point;
+                }
+                else
+                {
+                    Points.Add(point);
+                }
+                Geometry = new RectangleGeometry(new Rect(Points[0], Points[1]));
+                IsFinish = true;
+
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        public override bool OnMouseDown(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return true;
+        }
+
+        public override bool OnMouseUp(IInputElement sender, MouseButtonEventArgs e)
+        {
+            return base.OnMouseUp(sender, e);
+        }
+    }
+}
diff --git a/Extensions/AIStudio.Wpf.Logical/AIStudio.Wpf.Logical_j1g3o1im_wpftmp.csproj b/Extensions/AIStudio.Wpf.Logical/AIStudio.Wpf.Logical_j1g3o1im_wpftmp.csproj
new file mode 100644
index 0000000..17bc4c1
--- /dev/null
+++ b/Extensions/AIStudio.Wpf.Logical/AIStudio.Wpf.Logical_j1g3o1im_wpftmp.csproj
@@ -0,0 +1,232 @@
+<Project>
+  <PropertyGroup>
+    <AssemblyName>AIStudio.Wpf.Logical</AssemblyName>
+    <IntermediateOutputPath>obj\Debug\</IntermediateOutputPath>
+    <BaseIntermediateOutputPath>obj\</BaseIntermediateOutputPath>
+    <MSBuildProjectExtensionsPath>F:\aistudio.-wpf.-diagram\Extensions\AIStudio.Wpf.Logical\obj\</MSBuildProjectExtensionsPath>
+    <_TargetAssemblyProjectName>AIStudio.Wpf.Logical</_TargetAssemblyProjectName>
+  </PropertyGroup>
+  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk.WindowsDesktop" />
+  <PropertyGroup>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\AIStudio.Wpf.DiagramDesigner.Serializable\AIStudio.Wpf.DiagramDesigner.Serializable.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\6.0.12\ref\net6.0\Accessibility.dll" />
+    <ReferencePath Include="F:\aistudio.-wpf.-diagram\AIStudio.Wpf.DiagramDesigner\bin\Debug\net6.0-windows\AIStudio.Wpf.DiagramDesigner.dll" />
+    <ReferencePath Include="F:\aistudio.-wpf.-diagram\AIStudio.Wpf.DiagramDesigner.Serializable\bin\Debug\net6.0-windows\AIStudio.Wpf.DiagramDesigner.Serializable.dll" />
+    <ReferencePath Include="C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.12\ref\net6.0\Microsoft.CSharp.dll" />
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\ No newline at end of file
diff --git a/Extensions/AIStudio.Wpf.Mind/AIStudio.Wpf.Mind_rnb4ixb3_wpftmp.csproj b/Extensions/AIStudio.Wpf.Mind/AIStudio.Wpf.Mind_rnb4ixb3_wpftmp.csproj
new file mode 100644
index 0000000..96ba89b
--- /dev/null
+++ b/Extensions/AIStudio.Wpf.Mind/AIStudio.Wpf.Mind_rnb4ixb3_wpftmp.csproj
@@ -0,0 +1,251 @@
+<Project>
+  <PropertyGroup>
+    <AssemblyName>AIStudio.Wpf.Mind</AssemblyName>
+    <IntermediateOutputPath>obj\Debug\</IntermediateOutputPath>
+    <BaseIntermediateOutputPath>obj\</BaseIntermediateOutputPath>
+    <MSBuildProjectExtensionsPath>F:\aistudio.-wpf.-diagram\Extensions\AIStudio.Wpf.Mind\obj\</MSBuildProjectExtensionsPath>
+    <_TargetAssemblyProjectName>AIStudio.Wpf.Mind</_TargetAssemblyProjectName>
+  </PropertyGroup>
+  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
+  <PropertyGroup>
+    <UseWPF>true</UseWPF>
+    <Company>AIStudio.Wpf.Controls</Company>
+    <Authors>akwkevin</Authors>
+    <PackageProjectUrl>https://gitee.com/akwkevin</PackageProjectUrl>
+    <PackageIcon>A.png</PackageIcon>
+    <PackageIconUrl />
+    <NeutralLanguage />
+    <Version>1.0.6</Version>
+    <Description>一个Wpf的思维导图控件</Description>
+  </PropertyGroup>
+  <ItemGroup>
+    <None Include="A.png">
+      <Pack>True</Pack>
+      <PackagePath>
+      </PackagePath>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\AIStudio.Wpf.DiagramDesigner.Serializable\AIStudio.Wpf.DiagramDesigner.Serializable.csproj" />
+    <ProjectReference Include="..\..\AIStudio.Wpf.DiagramDesigner\AIStudio.Wpf.DiagramDesigner.csproj" />
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+    <Compile Include="F:\aistudio.-wpf.-diagram\Extensions\AIStudio.Wpf.Mind\obj\Debug\netcoreapp3.1\GeneratedInternalTypeHelper.g.cs" />
+  </ItemGroup>
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+  <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
+</Project>
\ No newline at end of file
diff --git a/Extensions/AIStudio.Wpf.SFC/AIStudio.Wpf.SFC_0jmbcyah_wpftmp.csproj b/Extensions/AIStudio.Wpf.SFC/AIStudio.Wpf.SFC_0jmbcyah_wpftmp.csproj
new file mode 100644
index 0000000..2ca4d1b
--- /dev/null
+++ b/Extensions/AIStudio.Wpf.SFC/AIStudio.Wpf.SFC_0jmbcyah_wpftmp.csproj
@@ -0,0 +1,233 @@
+<Project>
+  <PropertyGroup>
+    <AssemblyName>AIStudio.Wpf.SFC</AssemblyName>
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+    <BaseIntermediateOutputPath>obj\</BaseIntermediateOutputPath>
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