% !TeX program = LuaTeX % Copyright (C) 2020 Roberto Giacomelli \newbox\mybox \nopagenumbers Test 1: the same Code 39 symbol drawing multiple time on the same canvas \directlua{ local barracuda = require "barracuda" local c39 = assert( barracuda:barcode() :new_encoder("code39") ) local symbol = assert(c39:from_string("ABCDEF12QJ31+")) local ok, err = c39:set_param("text_vpos", "top") assert(ok, err) local canvas = barracuda:new_canvas() symbol:append_ga(canvas) local ok, err = symbol:set_param("text_hpos", "center") assert(ok, err) symbol:append_ga(canvas, tex.sp "4.5cm") local ok, err = symbol:set_param("text_hpos", "right") assert(ok, err) symbol:append_ga(canvas, tex.sp "9.0cm") local ok, err = c39:set_param("text_vpos", "bottom") assert(ok, err) local ok, err = symbol:set_param("text_hpos", "left") symbol:append_ga(canvas, 0, tex.sp "-2.0cm") local ok, err = symbol:set_param("text_hpos", "center") assert(ok, err) symbol:append_ga(canvas, tex.sp "4.5cm", tex.sp "-2.0cm") local ok, err = symbol:set_param("text_hpos", "right") assert(ok, err) symbol:append_ga(canvas, tex.sp "9.0cm", tex.sp "-2.0cm") local drv = barracuda:get_driver() drv:ga_to_hbox(canvas, "mybox") }\box\mybox \bye