Border according to camera angle

I want the borders of the objects to be determined according to the camera angle, as in blender. There will be no borders in the area viewed, there will be borders in the area not viewed.

I think it is the same than I want to understand that the selected object is selected?

Please keep the discussion focused in a single thread, it will be easier for everyone to follow!

Close this thread in favor of the other one, since there are already replies in the latter (you can copy the screenshots to the other thread).