Situation: I am sitting on the armchair in the corner closest to the window where it is on the right and in front of me on the wall is the decoration.
Alternative situations: I am ready to leave so I get up from the arm chair and there is a table to my left. I am standing in front of the armchair bottom right trying to admire the decoration on the wall in front of me from afar where I am standing.
Question: What is the light to my right coming from?