# File lib/rvg/misc.rb, line 634
        def rotate(degrees)
            degrees = Magick::RVG.convert_one_to_float(degrees)
            @gc.rotate(degrees)
            @sx =  Math.cos(GraphicContext.degrees_to_radians(degrees))
            @rx =  Math.sin(GraphicContext.degrees_to_radians(degrees))
            @ry = -Math.sin(GraphicContext.degrees_to_radians(degrees))
            @sy =  Math.cos(GraphicContext.degrees_to_radians(degrees))
            concat_matrix()
            nil
        end