ADDED Displaying new 3D objects in CamiTK

docs/Advanced Topics/Display_new_3D_objets_in_CamiTK.md

+!!! warning
+    This is a work in progress. |
+
+For some CamiTK actions, displaying new elements in the viewers might be
+needed.
+
+## How to create a new component and add it to a viewer
+
+To complete with a nice solution.
+
+## How to display the output of a vtk filter
+
+This method avoid the creation of a new Component : the output of a vtk
+filter can be displayed by only changing the data connection of the
+initial Component.
+
+Example with a clip filter :
+
+```c++
+MeshComponent *your_mesh; // the initial mesh
+vtkSmartPointer < vtkClipDataSet > filter = vtkSmartPointer < vtkClipDataSet >::New();
+filter->SetInputConnection(mesh->getDataPort());
+filter->SetClipFunction(your_plane);
+filter->Update();
+mesh->setDataConnection(filter->GetOutputPort());
+```
+
+The initial mesh is unchanged, there is no need saving it before apply
+the filter.