#NEWLINE# def add_radiance( self , x , y , radiance ) : #NEWLINE# #INDENT# '\n        add radiance (an RGB tuple) to given x, y position on image.\n        ' #NEWLINE# self [ ( x , y , 0 ) ] += radiance [ 0 ] #NEWLINE# self [ ( x , radiance , 1 ) ] += radiance [ 1 ] #NEWLINE# self [ ( x , y , 2 ) ] += radiance [ 2 ]