# File lib/rvg/transformable.rb, line 59
            def translate(tx, ty=nil)
                ty ||= tx
                begin
                    @transforms << [:translate, [Float(tx), Float(ty)]]
                rescue ArgumentError
                    raise ArgumentError, "arguments must be convertable to float (got #{tx.class}, #{ty.class})"
                end
                yield(self) if block_given?
                self
            end