///<summary>Deletes all static objects created</summary>
 public static void deleteAllVTKObjects()
 {
     //clean up vtk objects
     if (data != null)
     {
         data.Dispose();
     }
     if (gauss != null)
     {
         gauss.Dispose();
     }
     if (a != null)
     {
         a.Dispose();
     }
     if (ellipse != null)
     {
         ellipse.Dispose();
     }
     if (m != null)
     {
         m.Dispose();
     }
     if (cut != null)
     {
         cut.Dispose();
     }
     if (mapper2 != null)
     {
         mapper2.Dispose();
     }
     if (actor2 != null)
     {
         actor2.Dispose();
     }
     if (ren != null)
     {
         ren.Dispose();
     }
     if (renWin != null)
     {
         renWin.Dispose();
     }
     if (iren != null)
     {
         iren.Dispose();
     }
 }