vtkSmartPointer

vtkSmartPointer is a utility in the Visualization Toolkit (VTK) that manages memory automatically when working with VTK objects. It ensures that objects are properly created and destroyed without the programmer needing to manually handle memory allocation or deallocation. Think of it as a smart, automatic caretaker for resources: it keeps track of how many references there are to an object and releases the memory when no longer needed. This reduces the chance of memory leaks and makes code cleaner and safer, especially when dealing with complex visualizations and large datasets.