diff --git a/windows/netgen.sln b/windows/netgen.sln
index 55de48a6..d5f0809a 100644
--- a/windows/netgen.sln
+++ b/windows/netgen.sln
@@ -1,8 +1,12 @@
 
-Microsoft Visual Studio Solution File, Format Version 13.00
+Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 2013
+VisualStudioVersion = 12.0.30501.0
+MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "netgen", "netgen.vcxproj", "{87468946-A594-4101-81A4-A131F35261EF}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "nglib", "nglib.vcxproj", "{2E260C8C-595C-442A-A962-51AC06EF8143}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug(OCC)|Win32 = Debug(OCC)|Win32
@@ -31,6 +35,22 @@ Global
 		{87468946-A594-4101-81A4-A131F35261EF}.Release|Win32.Build.0 = Release|Win32
 		{87468946-A594-4101-81A4-A131F35261EF}.Release|x64.ActiveCfg = Release|x64
 		{87468946-A594-4101-81A4-A131F35261EF}.Release|x64.Build.0 = Release|x64
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Debug(OCC)|Win32.ActiveCfg = Debug|Win32
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Debug(OCC)|Win32.Build.0 = Debug|Win32
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Debug(OCC)|x64.ActiveCfg = Debug|x64
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Debug(OCC)|x64.Build.0 = Debug|x64
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Debug|Win32.ActiveCfg = Debug|Win32
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Debug|Win32.Build.0 = Debug|Win32
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Debug|x64.ActiveCfg = Debug|x64
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Debug|x64.Build.0 = Debug|x64
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Release(OCC)|Win32.ActiveCfg = Release(OCC)|Win32
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Release(OCC)|Win32.Build.0 = Release(OCC)|Win32
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Release(OCC)|x64.ActiveCfg = Release(OCC)|x64
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Release(OCC)|x64.Build.0 = Release(OCC)|x64
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Release|Win32.ActiveCfg = Release|Win32
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Release|Win32.Build.0 = Release|Win32
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Release|x64.ActiveCfg = Release|x64
+		{2E260C8C-595C-442A-A962-51AC06EF8143}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/windows/netgen.vcxproj b/windows/netgen.vcxproj
index 6edb62b3..52afd285 100644
--- a/windows/netgen.vcxproj
+++ b/windows/netgen.vcxproj
@@ -167,7 +167,7 @@
       <Optimization>Disabled</Optimization>
       <IntrinsicFunctions>false</IntrinsicFunctions>
       <WholeProgramOptimization>false</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthread-w32\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(BOOSTROOT);$(PYTHONROOT)\include;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthread-w32\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;DEBUG;MSVC_EXPRESS;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
@@ -210,7 +210,7 @@
       <Optimization>Disabled</Optimization>
       <IntrinsicFunctions>false</IntrinsicFunctions>
       <WholeProgramOptimization>false</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(SolutionDir)..\..\ext_libs\tcl-64\include;$(SolutionDir)..\..\ext_libs\pthread-w64\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(BOOSTROOT);$(PYTHONROOT)\include;$(SolutionDir)..\..\ext_libs\tcl-64\include;$(SolutionDir)..\..\ext_libs\pthread-w64\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;DEBUG;MSVC_EXPRESS;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
@@ -252,8 +252,8 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\FFMPEG\include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;MSVC_EXPRESS;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;FFMPEG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(BOOSTROOT);$(PYTHONROOT)\include;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\FFMPEG\include;$(BOOSTROOT);$(PYTHONROOT)\include;</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;MSVC_EXPRESS;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;FFMPEG;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions</EnableEnhancedInstructionSet>
@@ -270,7 +270,7 @@
       <AdditionalDependencies>pthreadVC2.lib;tcl85.lib;tk85.lib;tix84.lib;zdll.lib;Togl17.lib;glu32.lib;opengl32.lib;avcodec.lib;avdevice.lib;avfilter.lib;avformat.lib;avutil.lib;postproc.lib;swresample.lib;swscale.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <ShowProgress>NotSet</ShowProgress>
       <Version />
-      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\tcl\lib\x86;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;$(SolutionDir)..\..\ext_libs\FFMPEG\lib\win32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\tcl\lib\x86;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;$(SolutionDir)..\..\ext_libs\FFMPEG\lib\win32;$(PYTHONROOT)\libs;$(BOOSTROOT)\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <EnableUAC>true</EnableUAC>
       <GenerateDebugInformation>false</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
@@ -300,8 +300,8 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\..\ext_libs\FFMPEG\include;$(SolutionDir)..\..\ext_libs\zlib\include</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;MSVC_EXPRESS;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;FFMPEG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(BOOSTROOT);$(PYTHONROOT)\include;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\..\ext_libs\FFMPEG\include;$(SolutionDir)..\..\ext_libs\zlib\include;$(BOOSTROOT);$(PYTHONROOT)\include;</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;MSVC_EXPRESS;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;FFMPEG;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions2</EnableEnhancedInstructionSet>
@@ -319,7 +319,7 @@
       <ShowProgress>NotSet</ShowProgress>
       <OutputFile>$(OutDir)$(ProjectName).exe</OutputFile>
       <Version />
-      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\tcl\lib\x64;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\lib;$(SolutionDir)..\..\ext_libs\FFMPEG\lib\x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\tcl\lib\x64;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\lib;$(SolutionDir)..\..\ext_libs\FFMPEG\lib\x64;$(BOOSTROOT)\lib;$(PYTHONROOT)\libs;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <EnableUAC>true</EnableUAC>
       <GenerateDebugInformation>false</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
@@ -346,8 +346,8 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\FFMPEG\include;$(CASROOT)\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;WNT;NDEBUG;_CONSOLE;MSVC_EXPRESS;Standard_EXPORT=;OCCGEOMETRY;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;FFMPEG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(BOOSTROOT);$(PYTHONROOT)\include;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\FFMPEG\include;$(CASROOT)\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;WNT;NDEBUG;_CONSOLE;MSVC_EXPRESS;Standard_EXPORT=;OCCGEOMETRY;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;FFMPEG;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions</EnableEnhancedInstructionSet>
@@ -364,7 +364,7 @@
       <AdditionalDependencies>pthreadVC2.lib;tcl85.lib;tk85.lib;tix84.lib;zdll.lib;Togl17.lib;glu32.lib;opengl32.lib;avcodec.lib;avdevice.lib;avfilter.lib;avformat.lib;avutil.lib;postproc.lib;swresample.lib;swscale.lib;TKernel.lib;TKGeomBase.lib;TKMath.lib;TKG2d.lib;TKG3d.lib;TKXSBase.lib;TKOffset.lib;TKFillet.lib;TKShHealing.lib;TKMesh.lib;TKMeshVS.lib;TKTopAlgo.lib;TKGeomAlgo.lib;TKBool.lib;TKPrim.lib;TKBO.lib;TKIGES.lib;TKBRep.lib;TKSTEPBase.lib;TKSTEP.lib;TKSTL.lib;TKSTEPAttr.lib;TKSTEP209.lib;TKXDESTEP.lib;TKXDEIGES.lib;TKXCAF.lib;TKDCAF.lib;TKLCAF.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <ShowProgress>NotSet</ShowProgress>
       <Version />
-      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\tcl\lib\x86;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;$(SolutionDir)..\..\ext_libs\FFMPEG\lib\win32;$(CASROOT)\win32\vc8\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\tcl\lib\x86;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;$(SolutionDir)..\..\ext_libs\FFMPEG\lib\win32;$(CASROOT)\win32\vc8\lib;$(PYTHONROOT)\libs;$(BOOSTROOT)\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <EnableUAC>true</EnableUAC>
       <GenerateDebugInformation>false</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
@@ -394,8 +394,8 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <WholeProgramOptimization>true</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthreads-win32\include;$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\FFMPEG\include;$(CASROOT)\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;WNT;NDEBUG;_CONSOLE;MSVC_EXPRESS;_OCC64;Standard_EXPORT=;OCCGEOMETRY;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;FFMPEG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(BOOSTROOT);$(PYTHONROOT)\include;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthreads-win32\include;$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\FFMPEG\include;$(CASROOT)\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;WNT;NDEBUG;_CONSOLE;MSVC_EXPRESS;_OCC64;Standard_EXPORT=;OCCGEOMETRY;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;FFMPEG;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StringPooling>true</StringPooling>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions</EnableEnhancedInstructionSet>
@@ -412,7 +412,7 @@
       <AdditionalDependencies>pthreadVC2.lib;tcl85.lib;tk85.lib;zlib1.lib;tix84.lib;Togl17.lib;glu32.lib;opengl32.lib;avcodec.lib;avdevice.lib;avfilter.lib;avformat.lib;avutil.lib;postproc.lib;swresample.lib;swscale.lib;TKernel.lib;TKGeomBase.lib;TKMath.lib;TKG2d.lib;TKG3d.lib;TKXSBase.lib;TKOffset.lib;TKFillet.lib;TKShHealing.lib;TKMesh.lib;TKMeshVS.lib;TKTopAlgo.lib;TKGeomAlgo.lib;TKBool.lib;TKPrim.lib;TKBO.lib;TKIGES.lib;TKBRep.lib;TKSTEPBase.lib;TKSTEP.lib;TKSTL.lib;TKSTEPAttr.lib;TKSTEP209.lib;TKXDESTEP.lib;TKXDEIGES.lib;TKXCAF.lib;TKLCAF.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <ShowProgress>NotSet</ShowProgress>
       <Version />
-      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\tcl\lib\x64;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\FFMPEG\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\lib;$(CASROOT)\win64\vc9\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\tcl\lib\x64;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\FFMPEG\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\lib;$(CASROOT)\win64\vc9\lib;$(BOOSTROOT)\lib;$(PYTHONROOT)\libs;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <EnableUAC>true</EnableUAC>
       <GenerateDebugInformation>false</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
@@ -429,6 +429,10 @@
       <Message>Running POSTBUILD Script....</Message>
       <Command>"$(ProjectDir)\postBuild_netgen.bat" "$(ProjectName)" "$(TargetFileName)" "$(Configuration)" "$(Platform)" "$(ProjectDir)" "nginterface"</Command>
     </PostBuildEvent>
+    <PreBuildEvent>
+      <Command>if NOT defined PYTHONROOT (echo You need to set up environement variable PYTHONROOT)
+if NOT defined BOOSTROOT (echo You need to set up environement variable BOOSTROOT)</Command>
+    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug(OCC)|Win32'">
     <BuildLog>
@@ -438,7 +442,7 @@
       <Optimization>Disabled</Optimization>
       <IntrinsicFunctions>false</IntrinsicFunctions>
       <WholeProgramOptimization>false</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthread-w32\include;$(CASROOT)\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(BOOSTROOT);$(PYTHONROOT)\include;$(SolutionDir)..\..\ext_libs\tcl\include;$(SolutionDir)..\..\ext_libs\pthread-w32\include;$(CASROOT)\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;WNT;_DEBUG;_CONSOLE;DEBUG;MSVC_EXPRESS;Standard_EXPORT=;OCCGEOMETRY;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
@@ -481,7 +485,7 @@
       <Optimization>Disabled</Optimization>
       <IntrinsicFunctions>false</IntrinsicFunctions>
       <WholeProgramOptimization>false</WholeProgramOptimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(SolutionDir)..\..\ext_libs\tcl-64\include;$(SolutionDir)..\..\ext_libs\pthread-w64\include;$(CASROOT)\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)..;$(SolutionDir)..\ng;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\libsrc\interface;$(BOOSTROOT);$(PYTHONROOT)\include;$(SolutionDir)..\..\ext_libs\tcl-64\include;$(SolutionDir)..\..\ext_libs\pthread-w64\include;$(CASROOT)\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>WIN32;WNT;_DEBUG;_CONSOLE;DEBUG;MSVC_EXPRESS;_OCC64;Standard_EXPORT=;OCCGEOMETRY;OPENGL;_WIN32_WINNT=0x0502;NGINTERFACE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
@@ -667,7 +671,10 @@
     <ClInclude Include="..\libsrc\occ\Partition_Spliter.hxx" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="..\libsrc\csg\python_csg.cpp" />
+    <ClCompile Include="..\libsrc\csg\zrefine.cpp" />
     <ClCompile Include="..\libsrc\general\gzstream.cpp" />
+    <ClCompile Include="..\libsrc\meshing\python_mesh.cpp" />
     <ClCompile Include="..\libsrc\occ\occpkg.cpp" />
     <ClCompile Include="..\libsrc\occ\Partition_Inter2d.cxx" />
     <ClCompile Include="..\libsrc\occ\Partition_Inter3d.cxx" />
@@ -825,7 +832,6 @@
     <ClCompile Include="..\libsrc\interface\writetochnog.cpp" />
     <ClCompile Include="..\libsrc\interface\writeuser.cpp" />
     <ClCompile Include="..\libsrc\interface\wuchemnitz.cpp" />
-    <ClCompile Include="..\libsrc\meshing\zrefine.cpp" />
   </ItemGroup>
   <ItemGroup>
     <None Include="..\libsrc\occ\Partition_Inter2d.ixx" />
diff --git a/windows/nglib.vcxproj b/windows/nglib.vcxproj
index a09501ce..f5bc7075 100644
--- a/windows/nglib.vcxproj
+++ b/windows/nglib.vcxproj
@@ -201,8 +201,8 @@
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
-      <AdditionalIncludeDirectories>$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;_WIN32_WINNT=0x0502;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(BOOSTROOT);$(PYTHONROOT)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;_WIN32_WINNT=0x0502;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions</EnableEnhancedInstructionSet>
@@ -217,7 +217,7 @@
     </ClCompile>
     <Link>
       <AdditionalDependencies>pthreadVC2.lib;zdll.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;C:\Python34\libs;$(BOOSTROOT)\lib;$(PYTHONROOT)\libs;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ManifestFile>$(OutDir)$(TargetFileName).intermediate.manifest</ManifestFile>
     </Link>
     <Manifest>
@@ -242,8 +242,8 @@
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
-      <AdditionalIncludeDirectories>$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;_WIN32_WINNT=0x0502;NOTCL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(BOOSTROOT);$(PYTHONROOT)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;_WIN32_WINNT=0x0502;NOTCL;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions</EnableEnhancedInstructionSet>
@@ -258,7 +258,7 @@
     </ClCompile>
     <Link>
       <AdditionalDependencies>pthreadVC2.lib;zlib1.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\\lib;$(BOOSTROOT)\lib;$(PYTHONROOT)\libs;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ManifestFile>$(OutDir)$(TargetFileName).intermediate.manifest</ManifestFile>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
@@ -281,8 +281,8 @@
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
-      <AdditionalIncludeDirectories>$(CASROOT)\inc;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WNT;WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;Standard_EXPORT=;OCCGEOMETRY;_WIN32_WINNT=0x0502;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>$(CASROOT)\inc;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\..\ext_libs\zlib\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(BOOSTROOT);$(PYTHONROOT)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WNT;WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;Standard_EXPORT=;OCCGEOMETRY;_WIN32_WINNT=0x0502;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions</EnableEnhancedInstructionSet>
@@ -297,7 +297,7 @@
     </ClCompile>
     <Link>
       <AdditionalDependencies>pthreadVC2.lib;zdll.lib;TKernel.lib;TKGeomBase.lib;TKMath.lib;TKG2d.lib;TKG3d.lib;TKXSBase.lib;TKOffset.lib;TKFillet.lib;TKShHealing.lib;TKMesh.lib;TKMeshVS.lib;TKTopAlgo.lib;TKGeomAlgo.lib;TKBool.lib;TKPrim.lib;TKBO.lib;TKIGES.lib;TKBRep.lib;TKSTEPBase.lib;TKSTEP.lib;TKSTL.lib;TKSTEPAttr.lib;TKSTEP209.lib;TKXDESTEP.lib;TKXDEIGES.lib;TKXCAF.lib;TKDCAF.lib;TKLCAF.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(CASROOT)\win32\vc8\lib;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(CASROOT)\win32\vc8\lib;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x86;$(BOOSTROOT)\lib;$(PYTHONROOT)\libs;$(SolutionDir)..\..\ext_libs\zlib\x86\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ManifestFile>$(OutDir)$(TargetFileName).intermediate.manifest</ManifestFile>
     </Link>
     <Manifest>
@@ -322,8 +322,8 @@
       <InlineFunctionExpansion>AnySuitable</InlineFunctionExpansion>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
-      <AdditionalIncludeDirectories>$(CASROOT)\inc;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(SolutionDir)..\..\ext_libs\zlib\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WNT;WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;Standard_EXPORT=;OCCGEOMETRY;_OCC64;_WIN32_WINNT=0x0502;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>$(CASROOT)\inc;$(SolutionDir)..\..\ext_libs\pthreads-Win32\include;$(SolutionDir)..\libsrc\include;$(SolutionDir)..\nglib;$(SolutionDir)..\;$(SolutionDir)..\..\ext_libs\zlib\include;$(BOOSTROOT);$(PYTHONROOT)\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WNT;WIN32;NDEBUG;_WINDOWS;_USRDLL;NGLIB_EXPORTS;MSVC_EXPRESS;Standard_EXPORT=;OCCGEOMETRY;_OCC64;_WIN32_WINNT=0x0502;NG_PYTHON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <EnableEnhancedInstructionSet>StreamingSIMDExtensions</EnableEnhancedInstructionSet>
@@ -338,7 +338,7 @@
     </ClCompile>
     <Link>
       <AdditionalDependencies>pthreadVC2.lib;zlib1.lib;TKernel.lib;TKGeomBase.lib;TKMath.lib;TKG2d.lib;TKG3d.lib;TKXSBase.lib;TKOffset.lib;TKFillet.lib;TKShHealing.lib;TKMesh.lib;TKMeshVS.lib;TKTopAlgo.lib;TKGeomAlgo.lib;TKBool.lib;TKPrim.lib;TKBO.lib;TKIGES.lib;TKBRep.lib;TKSTEPBase.lib;TKSTEP.lib;TKSTL.lib;TKSTEPAttr.lib;TKSTEP209.lib;TKXDESTEP.lib;TKXDEIGES.lib;TKXCAF.lib;TKLCAF.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(CASROOT)\win64\vc9\lib;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(CASROOT)\win64\vc9\lib;$(SolutionDir)..\..\ext_libs\pthreads-Win32\lib\x64;$(SolutionDir)..\..\ext_libs\zlib\x64\\lib;$(BOOSTROOT)\lib;$(PYTHONROOT)\libs;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ManifestFile>$(OutDir)$(TargetFileName).intermediate.manifest</ManifestFile>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
@@ -353,6 +353,8 @@
     </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClCompile Include="..\libsrc\csg\python_csg.cpp" />
+    <ClCompile Include="..\libsrc\csg\zrefine.cpp" />
     <ClCompile Include="..\libsrc\general\gzstream.cpp" />
     <ClCompile Include="..\libsrc\meshing\adfront2.cpp" />
     <ClCompile Include="..\libsrc\meshing\adfront3.cpp" />
@@ -405,6 +407,7 @@
     <ClCompile Include="..\libsrc\meshing\meshfunc2d.cpp" />
     <ClCompile Include="..\libsrc\meshing\meshing2.cpp" />
     <ClCompile Include="..\libsrc\meshing\meshing3.cpp" />
+    <ClCompile Include="..\libsrc\meshing\python_mesh.cpp" />
     <ClCompile Include="..\libsrc\stlgeom\meshstlsurface.cpp" />
     <ClCompile Include="..\libsrc\csg\meshsurf.cpp" />
     <ClCompile Include="..\libsrc\meshing\meshtool.cpp" />
@@ -485,7 +488,6 @@
     <ClCompile Include="..\libsrc\interface\writetochnog.cpp" />
     <ClCompile Include="..\libsrc\interface\writeuser.cpp" />
     <ClCompile Include="..\libsrc\interface\wuchemnitz.cpp" />
-    <ClCompile Include="..\libsrc\meshing\zrefine.cpp" />
     <ClCompile Include="..\libsrc\occ\Partition_Inter2d.cxx" />
     <ClCompile Include="..\libsrc\occ\Partition_Inter3d.cxx" />
     <ClCompile Include="..\libsrc\occ\Partition_Loop.cxx" />
diff --git a/windows/postBuild_netgen.bat b/windows/postBuild_netgen.bat
index 452349a2..be7f269c 100644
--- a/windows/postBuild_netgen.bat
+++ b/windows/postBuild_netgen.bat
@@ -100,6 +100,7 @@ if /i "%BUILD_ARCH%" == "x64" (
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x64\tcl8.5" "%INSTALL_FOLDER%\lib\tcl8.5" /i /d /y /e /q
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x64\tix8.4.3" "%INSTALL_FOLDER%\lib\tix8.4.3" /i /d /y /e /q
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x64\tk8.5" "%INSTALL_FOLDER%\lib\tk8.5" /i /d /y /e /q
+   copy "%BOOSTROOT%\lib\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"
    REM if errorlevel 1 goto externalInstallFailed
 )   
 
@@ -110,6 +111,7 @@ if /i "%BUILD_ARCH%" == "win32" (
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x86\tcl8.5" "%INSTALL_FOLDER%\lib\tcl8.5" /i /d /y /e /q
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x86\tix8.4.3" "%INSTALL_FOLDER%\lib\tix8.4.3" /i /d /y /e /q
    xcopy "%PROJ_DIR%..\..\ext_libs\tcl\lib\x86\tk8.5" "%INSTALL_FOLDER%\lib\tk8.5" /i /d /y /e /q
+   copy "%BOOSTROOT%\lib\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"   
    REM if errorlevel 1 goto externalInstallFailed
 )
 
diff --git a/windows/postBuild_nglib.bat b/windows/postBuild_nglib.bat
index 3029cd54..c6d29a47 100644
--- a/windows/postBuild_nglib.bat
+++ b/windows/postBuild_nglib.bat
@@ -69,12 +69,13 @@ if /i "%BUILD_ARCH%" == "x64" (
 if /i "%BUILD_ARCH%" == "x64" (
    xcopy "%PROJ_DIR%..\..\ext_libs\pthreads-Win32\dll\x64\pthreadVC2.dll" "%INSTALL_FOLDER%\bin" /i /d /y   
    xcopy "%PROJ_DIR%..\..\ext_libs\zlib\x64\lib\zlib1.dll" "%INSTALL_FOLDER%\bin" /i /d /y
-
+   copy "%BOOSTROOT%\lib\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"
    if errorlevel 1 goto ExternalInstallFailed
 )
 if /i "%BUILD_ARCH%" == "win32" (
    xcopy "%PROJ_DIR%..\..\ext_libs\pthreads-Win32\dll\x86\pthreadVC2.dll" "%INSTALL_FOLDER%\bin" /i /d /y
    xcopy "%PROJ_DIR%..\..\ext_libs\zlib\x86\lib\zlib1.dll" "%INSTALL_FOLDER%\bin" /i /d /y
+   copy "%BOOSTROOT%\lib\boost_python-vc120-mt-1_56.dll" "%INSTALL_FOLDER%\bin\boost_python-vc120-mt-1_56.dll"   
    if errorlevel 1 goto ExternalInstallFailed
 )