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%D \module
%D [ file=meta-tab,
%D version=2003.03.21, % very old but now with splitter
%D title=\METAPOST\ Graphics,
%D subtitle=Dummy (External) Graphics,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\startuseMPgraphic{TallyBar}
height := (10/12) * LineHeight ;
span := ( 4/10) * LineHeight ;
drift := ( 1/10) * LineHeight ;
def d = (uniformdeviate drift) enddef ;
for i := 1 upto \MPvar{n} :
draw
if (i mod 5)=0 :
((-d-4.5span,d)--(+d-0.5span,height-d))
else :
((-d,+d)--(+d,height-d))
fi
shifted (span*i,d-drift) withpen pencircle ;
endfor ;
currentpicture := currentpicture scaled .75 ;
\stopuseMPgraphic
\setupMPvariables
[TallyBar]
[n=0]
\unexpanded\def\tallynumeral#1%
{\dontleavehmode
\lower.25\exheight\hbox{\useMPgraphic{TallyBar}{n=#1}}}
\unexpanded\def\tallynumerals#1%
{\dontleavehmode
\begingroup
\scratchcounter#1\relax
\doloop
{\ifnum\scratchcounter>\plusfive
\lower.25\exheight\hbox{\useMPgraphic{TallyBar}{n=5}}%
\advance\scratchcounter-\plusfive
\space
\else
\lower.25\exheight\hbox{\useMPgraphic{TallyBar}{n=\the\scratchcounter}}%
\exitloop
\fi}%
\endgroup}
\let\FunnyBar\tallynumeral
\defineconversion[tally][\tallynumerals]
\continueifinputfile{meta-imp-tab.mkiv}
\starttext
\starttabulate[|pr|c|]
\NC \tallynumerals {24} \NC \NR
\NC \tallynumerals {12} \NC \times \NR
\HL
\NC \tallynumerals{288} \NC = \NR
\stoptabulate
\tallynumerals{"FFFF}
\stoptext
\endinput
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