Modernising the code, improving images

src/Cxx/Utilities/2DArray.cxx

-#include <vtkSmartPointer.h>
 #include <vtkDenseArray.h>
+#include <vtkNew.h>
 
-int main(int, char *[])
+int main(int, char*[])
 {
-  vtkSmartPointer<vtkDenseArray<double> > array = 
-    vtkSmartPointer<vtkDenseArray<double> >::New();
-  
-  array->Resize(5,5);
-  
-  array->SetValue(4,4, 5.0);
-  
-  std::cout << array->GetValue(4,4) << std::endl;
-  
+  vtkNew<vtkDenseArray<double>> array;
+
+  array->Resize(5, 5);
+
+  array->SetValue(4, 4, 5.0);
+
+  std::cout << array->GetValue(4, 4) << std::endl;
+
   return EXIT_SUCCESS;
 }