Added SpiroControlPoint

Spiro/Core/SpiroControlPoint.cs

@@ -0,0 +1,32 @@
+/*
+libspiro - conversion between spiro control points and bezier's
+Copyright (C) 2007 Raph Levien
+              2015 converted to C# by Wiesław Šoltés
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 3
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA.
+
+*/
+using System;
+
+namespace SpiroNet
+{
+    public struct SpiroControlPoint
+    {
+        public double X;
+        public double Y;
+        public SpiroPointType Type;
+    }
+}

SpiroNet.csproj

@@ -41,6 +41,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Spiro\Core\SpiroControlPoint.cs" />
     <Compile Include="Spiro\Core\SpiroPointType.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />