Hi,  I have an application that uses BabylonJS: http://rapidmockup.topempresas.net/ As you see, i have a skybox with 3D backgrounds and a ArcRotateCamera in my scene. This works well, but i need a second behavior in my scene. When the user select an option, i need to rotate only the object and the plane in my scene, but not the background. It is because i need a option to user add your own backgorund image, but users will upload only one texture, and the background skybox must be fixed