add reference to Graphics

Animation/Aether.Animation.DX.csproj

@@ -40,4 +40,7 @@
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Graphics\Aether.Graphics.csproj" />
+  </ItemGroup>
 </Project>

Animation/Aether.Animation.NET4.XNA.csproj

@@ -69,6 +69,9 @@
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Graphics\Aether.Graphics.NET4.XNA.csproj" />
+  </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <Import Project="$(MSBuildExtensionsPath)\Microsoft\XNA Game Studio\Microsoft.Xna.GameStudio.targets" />
 </Project>

Animation/Aether.Animation.UAP.csproj

@@ -165,6 +165,9 @@
       <ExcludeAssets>runtime</ExcludeAssets>
     </PackageReference>
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Graphics\Aether.Graphics.csproj" />
+  </ItemGroup>
   <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">
     <VisualStudioVersion>14.0</VisualStudioVersion>
   </PropertyGroup>

Animation/Aether.Animation.csproj

@@ -37,4 +37,7 @@
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Graphics\Aether.Graphics.csproj" />
+  </ItemGroup>
 </Project>