def obj_import
    pos = []
    tex = []
    group = nil

    IO.foreach("/tmp/test.obj") { |aline|

            /^(\S*) ([^$]*)/.match(aline)

            verb = $1
            rest = $2
            case verb
                    when "s"
                            # ignore smoothing group
                    when "v"
                            # close current group
                            if group
                                    pos = []
                                    tex = []
                                    group = nil
                            end
                            / (\S*) (\S*) (\S*)/.match(rest)
                            pos.push Geom::Point3d.new($1.to_f,$2.to_f,$3.to_f)
                    when "f"
                            if /(\S*)\/(\S*) (\S*)\/(\S*) (\S*)\/(\S*)/.match(rest)
                                    vertices = [pos[$1.to_i], pos[$3.to_i], pos[$5.to_i]]
                            elsif /(\S*) (\S*) (\S*)/.match(rest)
                                    vertices = [pos[$1.to_i], pos[$2.to_i], pos[$3.to_i]]
                            end
                            group.entities.add_face vertices
                    when "g"
                            # open a new group
                            /(\S*)/.match(rest)
                            group = Sketchup.active_model.entities.add_group
                            group.name = $1
                            puts "group(#{$1})"
            end
    }
end
if(file_loaded("AdamB_obj_importer.rb"))
 	menu = UI.menu("Plugins");
	menu.add_item("Import OBJ File...") { obj_import }
end

#--------------------------------------------------------------------------
file_loaded("AdamB_obj_importer.rb")