Gui → Engine Relation

File in src/Gui	Includes file in src/Engine
BaseApplication.cpp	Scene / SystemDisplay.hpp
Viewer / Gizmo / GizmoManager.cpp	Scene / SystemDisplay.hpp
pch.hpp	Scene / SystemDisplay.hpp
Viewer / RotateAroundCameraManipulator.cpp	Scene / SystemDisplay.hpp
Viewer / TrackballCameraManipulator.cpp	Scene / SystemDisplay.hpp
Viewer / Viewer.cpp	Scene / SystemDisplay.hpp