# File lib/rvg/transformable.rb, line 45
        def matrix(sx, rx, ry, sy, tx, ty)
            begin
                @transforms << [:affine, [Float(sx), Float(rx), Float(ry), Float(sy), Float(tx), Float(ty)]]
            rescue ArgumentError
                raise ArgumentError, "arguments must be convertable to float (got #{sx.class}, #{rx.class}, #{ry.class}, #{sy.class}, #{sx.class}, #{sx.class}, #{tx.class}, #{ty.class})"
            end
            yield(self) if block_given?
            self
        end