monitor and threads

src/Vtk/uLibVtkInterface.h

@@ -31,6 +31,7 @@
 #include <vector>
 #include "Core/Object.h"
 #include "Core/Property.h"
+#include "Core/Monitor.h"
 
 // vtk classes forward declaration //
 class vtkProp;
@@ -112,6 +113,7 @@ protected:
   void RemoveProp(vtkProp *prop);
 
   std::vector<uLib::PropertyBase*> m_DisplayProperties;
+  mutable uLib::RecursiveMutex m_UpdateMutex;
 
 private:
   Puppet(const Puppet&) = delete;