mirror of
https://github.com/marcin-szczepanski/jFuzzyLogic.git
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562 lines
25 KiB
TeX
562 lines
25 KiB
TeX
\makeatletter
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\typeout{%
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Enhancements to Picture Environment. Version 1.2 - Released June 1, 1986}
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%----------------------------------------------------------------------
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% Copyright (C) podar@sbcs (Sunil Podar) July 14,1986.
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% You may use this file in whatever way you wish. You are requested to
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% leave this notice intact, and report any bugs, enhancements, comments,
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% suggestions, etc. to:
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% USmail: Sunil Podar,Dept. of Computer Science,SUNY at Stony Brook,NY 11794.
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% CSNET: podar@sbcs.csnet
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% ARPA: podar%suny-sb.csnet@csnet-relay.arpa
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% UUCP: {allegra, hocsd, philabs, ogcvax}!sbcs!podar
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%----------------------------------------------------------------------
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% This file contains implementation of:
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% \multiputlist \matrixput \grid \picsquare
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% \dottedline \dashline \drawline \jput
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% \putfile
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% Environments: dottedjoin, dashjoin and drawjoin
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%
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% For documentation, see the accompanying manual.
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%----------------------------------------------------------------------
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% usage: \multiputlist(x,y)(delta-x,delta-y)[tbrl]{item1,item2,item3,.....}
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% \lop and \lopoff taken from TeXbook.
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%----------------------------------------------------------------------
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\def\lop#1\to#2{\expandafter\lopoff#1\lopoff#1#2}
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\long\def\lopoff,#1,#2\lopoff#3#4{\def#4{#1}\def#3{,#2}}
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\def\@@mlistempty{,}
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\newif\iflistnonempty
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\def\multiputlist(#1,#2)(#3,#4){\@ifnextchar
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[{\@imultiputlist(#1,#2)(#3,#4)}{\@imultiputlist(#1,#2)(#3,#4)[]}}
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\long\def\@imultiputlist(#1,#2)(#3,#4)[#5]#6{{%
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\@xdim=#1\unitlength \@ydim=#2\unitlength
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\listnonemptytrue \def\@@mlist{,#6,} % need this for end condition
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\loop
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\lop\@@mlist\to\@@firstoflist
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\@killglue\raise\@ydim\hbox to\z@{\hskip
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\@xdim\@imakepicbox(0,0)[#5]{\@@firstoflist}\hss}
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\advance\@xdim #3\unitlength\advance\@ydim #4\unitlength
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\ifx\@@mlist\@@mlistempty \listnonemptyfalse\fi
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\iflistnonempty
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\repeat\relax
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\ignorespaces}}
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%----------------------------------------------------------------------
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% two-dimensional version of \multiput
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% \matrixput(0,0)(20,0){5}(0,20){3}{\circle{2}}
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%----------------------------------------------------------------------
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\newcount\@@multicnt
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\def\matrixput(#1,#2)(#3,#4)#5(#6,#7)#8#9{%
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\ifnum#5>#8\@matrixput(#1,#2)(#3,#4){#5}(#6,#7){#8}{#9}%
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\else\@matrixput(#1,#2)(#6,#7){#8}(#3,#4){#5}{#9}\fi}
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%% here #5 >= #8
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\long\def\@matrixput(#1,#2)(#3,#4)#5(#6,#7)#8#9{{\@killglue%
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\@multicnt=#5\relax\@@multicnt=#8\relax%
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\@xdim=0pt%
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\@ydim=0pt%
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\setbox\@tempboxa\hbox{\@whilenum \@multicnt > 0\do {%
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%%\typeout{\the\@multicnt, \the\@@multicnt}%
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\raise\@ydim\hbox to \z@{\hskip\@xdim #9\hss}%
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\advance\@multicnt \m@ne%
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\advance\@xdim #3\unitlength\advance\@ydim #4\unitlength}}%
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\@xdim=#1\unitlength%
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\@ydim=#2\unitlength%
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\@whilenum \@@multicnt > 0\do {%
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\raise\@ydim\hbox to \z@{\hskip\@xdim \copy\@tempboxa\hss}%
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\advance\@@multicnt \m@ne%
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\advance\@xdim #6\unitlength\advance\@ydim #7\unitlength}%
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\ignorespaces}}
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%----------------------------------------------------------------------
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%\grid(wd,ht)(delta-wd,delta-ht)[initial-X-integer,initial-Y-integer]
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% example: 1. \put(0,0){\grid(95,100)(9.5,10)}
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% 2. \put(0,0){\grid(100,100)(10,5)[-10,0]}
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% or \put(0,0){\tiny \grid(100,100)(5,5)[0,0]}%numbers in \tiny font
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%----------------------------------------------------------------------
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\newcount\d@lta
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\newdimen\@delta
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\newdimen\@@delta
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\newcount\@gridcnt
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\def\grid(#1,#2)(#3,#4){\@ifnextchar [{\@igrid(#1,#2)(#3,#4)}%
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{\@igrid(#1,#2)(#3,#4)[@,@]}}
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\long\def\@igrid(#1,#2)(#3,#4)[#5,#6]{%
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\makebox(#1,#2){%
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\@delta=#1pt\@@delta=#3pt\divide\@delta \@@delta\d@lta=\@delta%
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\advance\d@lta \@ne\relax\message{grid=\the\d@lta\space x}%
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%% copied the definition of \line(0,1){#2} for some efficiency!.
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\multiput(0,0)(#3,0){\d@lta}{\hbox to\z@{\hskip -\@halfwidth \vrule
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\@width \@wholewidth \@height #2\unitlength \@depth \z@\hss}}%
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\ifx#5@\relax\else%
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\global\@gridcnt=#5%
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\multiput(0,0)(#3,0){\d@lta}{%
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\makebox(0,-2)[t]{\number\@gridcnt\global\advance\@gridcnt by #3}}%
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\global\@gridcnt=#5%
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\multiput(0,#2)(#3,0){\d@lta}{\makebox(0,0)[b]{\number\@gridcnt\vspace{2mm}%
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\global\advance\@gridcnt by #3}}%
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\fi%
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\@delta=#2pt\@@delta=#4pt\divide\@delta \@@delta\d@lta=\@delta%
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\advance\d@lta \@ne\relax\message{\the\d@lta . }%
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%% copied the definition of \line(1,0){#1} for some efficiency!.
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\multiput(0,0)(0,#4){\d@lta}{\vrule \@height \@halfwidth \@depth \@halfwidth
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\@width #1\unitlength}%
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\ifx#6@\relax\else
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\global\@gridcnt=#6%
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\multiput(0,0)(0,#4){\d@lta}{%
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\makebox(0,0)[r]{\number\@gridcnt\ \global\advance\@gridcnt by #4}}%
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\global\@gridcnt=#6%
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\multiput(#1,0)(0,#4){\d@lta}{%
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\makebox(0,0)[l]{\ \number\@gridcnt\global\advance\@gridcnt by #4}}%
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\fi}}
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%----------------------------------------------------------------------
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% \picsquare is a centered square of dimensions governed by \thinlines,
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% \thicklines or \linethickness declarations.
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\def\picsquare{\hskip -0.5\@wholewidth%
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\vrule height \@halfwidth depth \@halfwidth width \@wholewidth}
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%
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% just a square dot with reference point at bottom-left
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\def\picsquare@bl{\vrule height \@wholewidth depth \z@ width \@wholewidth}
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%----------------------------------------------------------------------
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% \begin{dottedjoin}{interdot-gap in units}
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% .....
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% \end{dottedjoin}
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% \begin{dashjoin}{dash-length in units}{interdotgap in each dash}
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% .....
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% \end{dashjoin}
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% \begin{drawjoin}
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% .....
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% \end{drawjoin}
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% \jput(x,y){character}
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% \dottedline[opt. dotcharacter]{dotgap in units}(x1,y1)(x2,y2)...(xN,yN)
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% \dashline[#]{dash-length}[opt. dotgap](x1,y1)(x2,y2)...(xN,yN)
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% \drawline[#](x1,y1)(x2,y2)...(xN,yN)
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%----------------------------------------------------------------------
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% definitions for *join environment. had to do all this mess because of
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% optional arguments.
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%----------------------------------------------------------------------
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\newif\if@jointhem \global\@jointhemfalse
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\newif\if@firstpoint \global\@firstpointtrue
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\newcount\@joinkind
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%\newenvironment{dottedjoin}[1]%[opt char]{dotgap}
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%{\global\@jointhemtrue \gdef\dotgap@join{#1}\global\@joinkind=0\relax}%
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%{\global\@jointhemfalse \global\@firstpointtrue}
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%----------------------------------------------------------------------
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\def\dottedjoin{\global\@jointhemtrue \global\@joinkind=0\relax
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\bgroup\@ifnextchar[{\@idottedjoin}{\@idottedjoin[\picsquare@bl]}}
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\def\@idottedjoin[#1]#2{\gdef\dotchar@join{#1}\gdef\dotgap@join{#2}}
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\def\enddottedjoin{\global\@jointhemfalse \global\@firstpointtrue\egroup}
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%----------------------------------------------------------------------
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\def\dashjoin{\global\@jointhemtrue \global\@joinkind=1\relax
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\bgroup\@ifnextchar[{\@idashjoin}{\@idashjoin[\dashlinestretch]}}
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\def\@idashjoin[#1]#2{\edef\dashlinestretch{#1}\gdef\dashlen@join{#2}%
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\@ifnextchar[{\@iidashjoin}{\gdef\dotgap@join{}}}
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\def\@iidashjoin[#1]{\gdef\dotgap@join{#1}}
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\let\enddashjoin\enddottedjoin
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%----------------------------------------------------------------------
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\def\drawjoin{\global\@jointhemtrue \global\@joinkind=2\relax
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\bgroup\@ifnextchar[{\@idrawjoin}{}}
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\def\@idrawjoin[#1]{\def\drawlinestretch{#1}}
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\let\enddrawjoin\enddottedjoin
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%----------------------------------------------------------------------
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%% this is equiv to \put(x,y){#1} when not in {dot*join} environment.
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\long\def\jput(#1,#2)#3{{\@killglue\raise#2\unitlength\hbox to \z@{\hskip
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#1\unitlength #3\hss}\ignorespaces}
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\if@jointhem
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\if@firstpoint \gdef\x@one{#1} \gdef\y@one{#2} \global\@firstpointfalse
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\else\ifcase\@joinkind
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\@dottedline[\dotchar@join]{\dotgap@join\unitlength}%
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(\x@one\unitlength,\y@one\unitlength)(#1\unitlength,#2\unitlength)
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\or\@dashline[\dashlinestretch]{\dashlen@join}[\dotgap@join]%
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(\x@one,\y@one)(#1,#2)
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\else\@drawline[\drawlinestretch](\x@one,\y@one)(#1,#2)\fi
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\gdef\x@one{#1} \gdef\y@one{#2}
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\fi
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\fi}
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%----------------------------------------------------------------------
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\newdimen\@dotgap
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\newdimen\@ddotgap
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\newcount\@x@diff
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\newcount\@y@diff
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\newdimen\x@diff
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\newdimen\y@diff
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\newbox\@dotbox
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\newcount\num@segments
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\newcount\num@segmentsi
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\newif\ifsqrt@done
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%% from sqrtandstuff func basically need \num@segments.
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%% given a deltax, deltay and dotgap, it calculates \num@segments = number of
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%% segments along the hypotenuse. used by \dottedline & \dashline.
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%% It finishes quickly if any of deltax or deltay are zero or close to zero.
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\def\sqrtandstuff#1#2#3{
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\ifdim #1 <0pt \@x@diff= -#1 \else\@x@diff=#1\fi
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\ifdim #2 <0pt \@y@diff= -#2 \else\@y@diff=#2\fi
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%% @diff's will be positive and diff's will retain their sign.
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\@dotgap=#3 \divide\@dotgap \tw@
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\advance\@x@diff \@dotgap \advance\@y@diff \@dotgap% for round-off errors
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\@dotgap=#3
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\divide\@x@diff \@dotgap \divide\@y@diff \@dotgap
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\sqrt@donefalse
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\ifnum\@x@diff < 2
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\ifnum\@y@diff < 2 \num@segments=\@x@diff \advance\num@segments \@y@diff
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\sqrt@donetrue
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\else\num@segments=\@y@diff \sqrt@donetrue\fi
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\else\ifnum\@y@diff < 2 \num@segments=\@x@diff \sqrt@donetrue\fi
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\fi
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\ifsqrt@done \ifnum\num@segments=\z@ \num@segments=\@ne\fi\relax
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\else \ifnum\@y@diff >\@x@diff
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\@tempcnta=\@x@diff \@x@diff=\@y@diff \@y@diff=\@tempcnta
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\fi %exchange @x@diff & @y@diff, so now @x@diff > @y@diff
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\num@segments=\@y@diff
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\multiply\num@segments \num@segments
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\multiply\num@segments by 457
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\divide\num@segments \@x@diff
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\advance\num@segments by 750 % for round-off, going to divide by 1000.
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\divide\num@segments \@m
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\advance\num@segments \@x@diff
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%num@segments = @x@diff + (0.457*sqr(@y@diff)/@x@diff)
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\fi}
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%----------------------------------------------------------------------
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% \dottedline[opt. char]{interdot gap in units}(x1,y1)(x2,y2)....(xN,yN)
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%----------------------------------------------------------------------
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%% Used the following construction earlier but that results in box memory
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%% full much too soon although it works perfectly.
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%% \setbox\@dotbox\vbox to\z@{\vss \hbox to\z@{\hss #1\hss}\vss}\relax}
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%% The cenetering of characters is achieved by substracting half the ht, wd
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%% of character from the (x,y) coordinates where they are to be put. We
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%% chose to use a macro for the ``dot'' instead of \copy\box to save memory
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%% at the expense of extra cpu, since memory becomes an issue very soon.
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%% \picsquare is already centered, whereas other characters, except \circle,
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%% will not be cenetered, hence to handle them all in a similar fashion,
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%% used \picsquare@bl.
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%
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% kind of tail recursion.
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\def\dottedline{\@ifnextchar [{\@idottedline}{\@idottedline[\picsquare@bl]}}
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\def\@idottedline[#1]#2(#3,#4){\@ifnextchar (%
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{\@iidottedline[#1]{#2}(#3,#4)}{\relax}}
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\def\@iidottedline[#1]#2(#3,#4)(#5,#6){\@dottedline[#1]{#2\unitlength}%
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(#3\unitlength,#4\unitlength)(#5\unitlength,#6\unitlength)%
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\@idottedline[#1]{#2}(#5,#6)}
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%
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%% user not supposed to use this directly. arguments in absolute dimensions.
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%% need to pass absolute dimens here because dashline calls dottedline and
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%% can supply only absolute dimensions.
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\long\def\@dottedline[#1]#2(#3,#4)(#5,#6){{%
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\x@diff=#5\relax\advance\x@diff by -#3\relax
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\y@diff=#6\relax\advance\y@diff by -#4\relax
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\sqrtandstuff{\x@diff}{\y@diff}{#2}
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\divide\x@diff \num@segments
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\divide\y@diff \num@segments
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\advance\num@segments \@ne % to put the last point at destination.
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%%\typeout{num@segments= \the\num@segments}
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\setbox\@dotbox\hbox{#1}% just to get the dimensions of the character.
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\@xdim=#3 \@ydim=#4
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\ifdim\ht\@dotbox >\z@% otherwise its a circle.
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\advance\@xdim -0.5\wd\@dotbox
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\advance\@ydim -0.5\ht\@dotbox
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\advance\@ydim .5\dp\@dotbox\fi
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%%circle's have a ht=0, this is one way I could think of to catch circles.
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%%following loop is equiv to
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%%\multiput(\@xdim,\@ydim)(\x@diff,\y@diff){\num@segments}{#1}
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%%with arguments in absolute dimensions.
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\@killglue
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\loop \ifnum\num@segments > 0
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\unskip\raise\@ydim\hbox to\z@{\hskip\@xdim #1\hss}%
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\advance\num@segments \m@ne\advance\@xdim\x@diff\advance\@ydim\y@diff%
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\repeat
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\ignorespaces}}
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%----------------------------------------------------------------------
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% \dashline[#]{dash-length}[optional dotgap](x1,y1)(x2,y2)...(xN,yN)
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% The minimum # of dashes put is 2, one at either end point; dash-length is
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% reduced accordingly if necessary. Also have to some dirty work to account
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% for stretch & shrink.
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% \renewcommand{\dashlinestretch}{-50} %ONLY INTEGERS PERMITTED.
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%----------------------------------------------------------------------
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\def\dashlinestretch{0} %well, could have used a counter.
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\def\dashline{\@ifnextchar [{\@idashline}{\@idashline[\dashlinestretch]}}
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\def\@idashline[#1]#2{\@ifnextchar [{\@iidashline[#1]{#2}}%
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{\@iidashline[#1]{#2}[\@empty]}} %\@empty needed-- later checked with \ifx
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\def\@iidashline[#1]#2[#3](#4,#5){\@ifnextchar (%
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{\@iiidashline[#1]{#2}[#3](#4,#5)}{\relax}}
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%
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\def\@iiidashline[#1]#2[#3](#4,#5)(#6,#7){%
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\@dashline[#1]{#2}[#3](#4,#5)(#6,#7)%
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\@iidashline[#1]{#2}[#3](#6,#7)}
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%
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\long\def\@dashline[#1]#2[#3](#4,#5)(#6,#7){{%
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\x@diff=#6\unitlength \advance\x@diff by -#4\unitlength
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\y@diff=#7\unitlength \advance\y@diff by -#5\unitlength
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%% correction to get actual width since the dash-length as taken in arguement
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%% is the center-to-center of the end-points.
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\@tempdima=#2\unitlength \advance\@tempdima -\@wholewidth
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\sqrtandstuff{\x@diff}{\y@diff}{\@tempdima}
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\ifnum\num@segments <3 \num@segments=3\fi% min number of dashes I can plot
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% is 2, 1 at either end, thus min num@segments is 3 (including 'empty dash').
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\@tempdima=\x@diff \@tempdimb=\y@diff
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\divide\@tempdimb by\num@segments
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\divide\@tempdima by\num@segments
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%% ugly if-then-else. If optional dotgap specified, then use it otherwise
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%% make a solid looking dash.
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{\ifx#3\@empty \relax
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\ifdim\@tempdima < 0pt \x@diff=-\@tempdima\else\x@diff=\@tempdima\fi
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\ifdim\@tempdimb < 0pt \y@diff=-\@tempdimb\else\y@diff=\@tempdimb\fi
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\ifdim\x@diff < 0.3pt %it's a vertical dashline
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\ifdim\@tempdimb > 0pt
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\global\setbox\@dotbox\hbox{\hskip -\@halfwidth \vrule
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\@width \@wholewidth \@height \@tempdimb}
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\else\global\setbox\@dotbox\hbox{\hskip -\@halfwidth \vrule
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\@width \@wholewidth \@height\z@ \@depth -\@tempdimb}\fi
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\else\ifdim\y@diff < 0.3pt %it's a horizontal dashline
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\ifdim\@tempdima >0pt
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\global\setbox\@dotbox\hbox{\vrule \@height \@halfwidth
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\@depth \@halfwidth \@width \@tempdima}
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\else\global\setbox\@dotbox\hbox{\hskip \@tempdima
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\vrule \@height \@halfwidth \@depth \@halfwidth
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\@width -\@tempdima \hskip \@tempdima}\fi
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\else\global\setbox\@dotbox\hbox{%
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\@dottedline[\picsquare]{0.98\@wholewidth}(0pt,0pt)(\@tempdima,\@tempdimb)}
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\fi\fi
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\else\global\setbox\@dotbox\hbox{%
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\@dottedline[\picsquare]{#3\unitlength}(0pt,0pt)(\@tempdima,\@tempdimb)}
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\fi}
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\advance\x@diff by -\@tempdima % both have same sign
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\advance\y@diff by -\@tempdimb
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%
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%%here we correct the number of dashes to be put by reducing them
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%%appropriately. (num@segments*\@wholewidth) is in some way the slack we
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%%have,and division by dash-length gives the reduction. reduction =
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%%(2*num@segments*\@wholewidth)/dash-length
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%% (num@segments includes empty ones)
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\@tempdima=\num@segments\@wholewidth \@tempdima=2\@tempdima
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\@tempcnta=\@tempdima \@tempdima=#2\unitlength \@tempdimb=0.5\@tempdima
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\@tempcntb=\@tempdimb \advance\@tempcnta by \@tempcntb % round-off error
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\divide\@tempcnta by\@tempdima \advance\num@segments by -\@tempcnta
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%
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\ifnum #1=0 \relax\else\ifnum #1 < -100
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\typeout{***dashline: reduction > -100 percent implies blankness!***}
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\else\num@segmentsi=#1 \advance\num@segmentsi by 100
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\multiply\num@segments by\num@segmentsi \divide\num@segments by 100
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\fi\fi
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%
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\divide\num@segments by 2 % earlier num@segments included 'empty dashes' too.
|
|
\ifnum\num@segments >0 % if =0 then don't divide => \x@diff & \y@diff
|
|
\divide\x@diff by\num@segments% remain same.
|
|
\divide\y@diff by\num@segments
|
|
\advance\num@segments by\@ne %for the last segment for which I subtracted
|
|
%\@tempdima & \@tempdimb from \x@diff & \y@diff
|
|
\else\num@segments=2 % one at each end.
|
|
\fi
|
|
%%\typeout{num@segments finally = \the\num@segments}
|
|
%% equiv to \multiput(#4,#5)(\x@diff,\y@diff){\num@segments}{\copy\@dotbox}
|
|
%% with arguements in absolute dimensions.
|
|
\@xdim=#4\unitlength \@ydim=#5\unitlength
|
|
\@killglue
|
|
\loop \ifnum\num@segments > 0
|
|
\unskip\raise\@ydim\hbox to\z@{\hskip\@xdim \copy\@dotbox\hss}%
|
|
\advance\num@segments \m@ne\advance\@xdim\x@diff\advance\@ydim\y@diff%
|
|
\repeat
|
|
\ignorespaces}}
|
|
%----------------------------------------------------------------------
|
|
%%1.00 .833333 .80 .75 .66666 .60 .50 .40 .33333 .25 .20 .16666
|
|
%% .916666 .816666 .775 .708333 .633333 .55 .45 .366666 .291666 .225 .183333
|
|
%% 0.0
|
|
%%0.083333
|
|
%% the first line has absolute slopes corresponding to various permissible
|
|
%% integer combinations representing slopes. The second line is the midpoint
|
|
%% of all those slopes (attempted to show them in the middle of two entries).
|
|
%%
|
|
%% \lineslope(x@diff dimen, y@diff dimen)
|
|
%% Given base (x@diff) and height (y@diff) in dimensions, determines the
|
|
%% closest available slope and returns the two required integers in \@xarg
|
|
%% and \@yarg. The given base and height can be ANYTHING, -ve or +ve, or
|
|
%% even 0pt. \lineslope knows about (0,1) and (1,0) slopes too and returns
|
|
%% correct values if the conditions regarding x@diff & y@diff are obeyed
|
|
%% (see NOTE). Used by \drawline. This is the simplest and only way I could
|
|
%% figure out to accomplish it!.
|
|
%% NOTE: both the dimensions (x@diff & y@diff) must be in SAME units and the
|
|
%% larger of the two dimensions must be atleast 1pt (i.e. 65536sp). To avoid
|
|
%% dividing by 0, I make the larger dimension = 1pt if it is < 1pt.
|
|
%% will need a similar one for vectors, or maybe this can be used. For
|
|
%% vectors the range is -4, 4 unlike lines where it is -6, 6.
|
|
\newif\if@flippedargs
|
|
\def\lineslope(#1,#2){%
|
|
\ifdim #1 <0pt \@xdim= -#1 \else\@xdim=#1\fi
|
|
\ifdim #2 <0pt \@ydim= -#2 \else\@ydim=#2\fi
|
|
%%\typeout{xdim,ydim= \the\@xdim, \the\@ydim}
|
|
\ifdim\@xdim >\@ydim \@tempdima=\@xdim \@xdim=\@ydim \@ydim=\@tempdima
|
|
\@flippedargstrue\else\@flippedargsfalse\fi% x < y
|
|
\ifdim\@ydim >1pt \@tempcnta=\@ydim
|
|
\divide\@tempcnta by 65536% now \@tempcnta=integral part of #1.
|
|
\divide\@xdim \@tempcnta\fi
|
|
\ifdim\@xdim <.083333pt \@xarg=1 \@yarg=0
|
|
\else\ifdim\@xdim <.183333pt \@xarg=6 \@yarg=1
|
|
\else\ifdim\@xdim <.225pt \@xarg=5 \@yarg=1
|
|
\else\ifdim\@xdim <.291666pt \@xarg=4 \@yarg=1
|
|
\else\ifdim\@xdim <.366666pt \@xarg=3 \@yarg=1
|
|
\else\ifdim\@xdim <.45pt \@xarg=5 \@yarg=2
|
|
\else\ifdim\@xdim <.55pt \@xarg=2 \@yarg=1
|
|
\else\ifdim\@xdim <.633333pt \@xarg=5 \@yarg=3
|
|
\else\ifdim\@xdim <.708333pt \@xarg=3 \@yarg=2
|
|
\else\ifdim\@xdim <.775pt \@xarg=4 \@yarg=3
|
|
\else\ifdim\@xdim <.816666pt \@xarg=5 \@yarg=4
|
|
\else\ifdim\@xdim <.916666pt \@xarg=6 \@yarg=5
|
|
\else \@xarg=1 \@yarg=1%
|
|
\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
|
|
\if@flippedargs\relax\else\@tempcnta=\@xarg \@xarg=\@yarg
|
|
\@yarg=\@tempcnta\fi
|
|
\ifdim #1 <0pt \@xarg= -\@xarg\fi
|
|
\ifdim #2 <0pt \@yarg= -\@yarg\fi
|
|
%%\typeout{closest slope integers = \the\@xarg, \the\@yarg}
|
|
}
|
|
%----------------------------------------------------------------------
|
|
% usage: \drawline[#](x1,y1)(x2,y2)....(xN,yN)
|
|
% % # is an optional integer between -100 & infinity.
|
|
% \renewcommand{\drawlinestretch}{-50} %ONLY INTEGERS PERMITTED.
|
|
%----------------------------------------------------------------------
|
|
\newif\if@toosmall
|
|
\newif\if@drawit
|
|
\newif\if@horvline
|
|
\def\drawlinestretch{0} %well, could have used a counter.
|
|
% kind of tail recursion.
|
|
\def\drawline{\@ifnextchar [{\@idrawline}{\@idrawline[\drawlinestretch]}}
|
|
\def\@idrawline[#1](#2,#3){\@ifnextchar ({\@iidrawline[#1](#2,#3)}{\relax}}
|
|
\def\@iidrawline[#1](#2,#3)(#4,#5){\@drawline[#1](#2,#3)(#4,#5)%
|
|
\@idrawline[#1](#4,#5)}
|
|
%
|
|
\def\@drawline[#1](#2,#3)(#4,#5){{%
|
|
\x@diff=#4\unitlength \advance\x@diff by -#2\unitlength
|
|
\y@diff=#5\unitlength \advance\y@diff by -#3\unitlength
|
|
%% override any linethickness declarations, and since horiz & vertical lines
|
|
%% come out thinner than the slanted ones, assign slightly larger values.
|
|
%% default values are: thinlines=0.4pt, thicklines=0.8pt
|
|
\ifx\@linefnt\tenln \linethickness{0.5pt} \else \linethickness{0.9pt}\fi
|
|
\lineslope(\x@diff,\y@diff)% returns the two integers in \@xarg & \@yarg.
|
|
%------
|
|
\@toosmalltrue
|
|
{\ifdim\x@diff <\z@ \x@diff=-\x@diff\fi
|
|
\ifdim\y@diff <\z@ \y@diff=-\y@diff\fi
|
|
\ifdim\x@diff >10pt \global\@toosmallfalse\fi
|
|
\ifdim\y@diff >10pt \global\@toosmallfalse\fi}
|
|
%------
|
|
%% For efficiency, if the line is horiz or vertical then we draw it in one
|
|
%% shot, only if the stretch is not -ve and the line is not too small.
|
|
\@drawitfalse\@horvlinefalse
|
|
\ifnum#1 <0 \relax\else\@horvlinetrue\fi
|
|
\if@toosmall\@horvlinetrue\fi% to get 'or' condition. We necessarily draw a
|
|
% solid line if the line is too small ignoring any -ve stretch.
|
|
\if@horvline
|
|
\ifdim\x@diff =0pt \put(#2,#3){\ifdim\y@diff >0pt \@linelen=\y@diff \@upline
|
|
\else\@linelen=-\y@diff \@downline\fi}%
|
|
\else\ifdim\y@diff =0pt
|
|
\ifdim\x@diff >0pt \put(#2,#3){\vrule \@height \@halfwidth \@depth
|
|
\@halfwidth \@width \x@diff}
|
|
\else \put(#4,#5){\vrule \@height \@halfwidth \@depth
|
|
\@halfwidth \@width -\x@diff}\fi
|
|
\else\@drawittrue\fi\fi % construct the line explicitly
|
|
\else\@drawittrue\fi
|
|
%-------------------------------
|
|
\if@drawit
|
|
\ifnum\@xarg< 0 \@negargtrue\else\@negargfalse\fi
|
|
\ifnum\@xarg =0 \setbox\@linechar%
|
|
\hbox{\hskip -\@halfwidth \vrule \@width \@wholewidth \@height 10.2pt
|
|
\@depth \z@}
|
|
\else \ifnum\@yarg =0 \setbox\@linechar%
|
|
\hbox{\vrule \@height \@halfwidth \@depth \@halfwidth \@width 10.2pt}
|
|
\else \if@negarg \@xarg -\@xarg \@yyarg -\@yarg
|
|
\else \@yyarg \@yarg\fi
|
|
\ifnum\@yyarg >0 \@tempcnta\@yyarg \else \@tempcnta -\@yyarg\fi
|
|
\setbox\@linechar\hbox{\@linefnt\@getlinechar(\@xarg,\@yyarg)}%
|
|
\fi\fi
|
|
%------
|
|
\if@toosmall% => it isn't a horiz or vert line and is toosmall.
|
|
\@dottedline[\picsquare]{.98\@wholewidth}%
|
|
(#2\unitlength,#3\unitlength)(#4\unitlength,#5\unitlength)%
|
|
\else
|
|
%% following is neat. The last segment takes \wd\@linechar & \ht\@linechar
|
|
%% so plot the line as though it were from (#2,#3) to
|
|
%% (#4-\wd\@linechar,#5-\ht\@linechar) (i.e. for positive slope; of course,
|
|
%% signs are reversed for other slopes). For horizontal & vertical dashes we
|
|
%% don't have to subtract the ht & wd resp. since they are already centered.
|
|
\ifnum\@xarg=0\relax\else\ifdim\x@diff >\z@ \advance\x@diff -\wd\@linechar
|
|
\else\advance\x@diff \wd\@linechar\fi\fi
|
|
\ifnum\@yarg=0\relax\else\ifdim\y@diff >\z@\advance\y@diff -\ht\@linechar
|
|
\else\advance\y@diff \ht\@linechar\fi\fi
|
|
\ifdim\x@diff <\z@ \@x@diff=-\x@diff \else\@x@diff=\x@diff\fi
|
|
\ifdim\y@diff <\z@ \@y@diff=-\y@diff \else\@y@diff=\y@diff\fi
|
|
%%\typeout{x@diff,y@diff=\the\x@diff , \the\y@diff}
|
|
\num@segments=0 \num@segmentsi=0
|
|
\ifdim\wd\@linechar >1pt
|
|
\num@segmentsi=\@x@diff \divide\num@segmentsi \wd\@linechar\fi
|
|
\ifdim\ht\@linechar >1pt
|
|
\num@segments=\@y@diff \divide\num@segments \ht\@linechar\fi
|
|
\ifnum\num@segmentsi >\num@segments \num@segments=\num@segmentsi\fi
|
|
\advance\num@segments \@ne %to account for round-off error
|
|
%
|
|
\ifnum #1=0 \relax \else\ifnum #1 < -99
|
|
\typeout{***drawline: reduction <= -100 percent implies blankness!***}
|
|
\else\num@segmentsi=#1 \advance\num@segmentsi by 100
|
|
\multiply\num@segments \num@segmentsi
|
|
\divide\num@segments by 100
|
|
\ifnum \num@segments=0 \num@segments=1 \fi
|
|
\fi\fi
|
|
%%\typeout{num@segments after = \the\num@segments}
|
|
%
|
|
\divide\x@diff \num@segments
|
|
\divide\y@diff \num@segments
|
|
\advance\num@segments \@ne %for the last segment for which I subtracted
|
|
%\wd & \ht of \@linechar from \@x@diff & \@y@diff.
|
|
%%\typeout{numseg,x@diff,y@diff= \the\num@segments, \the\x@diff, \the\y@diff}
|
|
%
|
|
\@xdim=#2\unitlength \@ydim=#3\unitlength
|
|
\if@negarg \advance\@xdim -\wd\@linechar\fi
|
|
\ifnum\@yarg <0 \advance\@ydim -\ht\@linechar\fi
|
|
%%following loop equiv to \multiput@abs(\@xdim,\@ydim)%
|
|
%%(\x@diff,\y@diff){\num@segments}{\copy\@linechar}
|
|
%%with arguements in absolute dimensions.
|
|
\@killglue
|
|
\loop \ifnum\num@segments > 0
|
|
\unskip\raise\@ydim\hbox to\z@{\hskip\@xdim \copy\@linechar\hss}%
|
|
\advance\num@segments \m@ne\advance\@xdim\x@diff\advance\@ydim\y@diff%
|
|
\repeat
|
|
\ignorespaces
|
|
\fi%the if of @toosmall
|
|
\fi}}% for \if@drawit
|
|
%----------------------------------------------------------------------
|
|
%usage: \putfile{datafile}{OBJECT}
|
|
% The OBJECT is plotted at EACH of the coordinates read from the datafile.
|
|
% The idea of these macros is to generate (x,y) pairs using some program
|
|
% and then directly use those coordinates. Since TeX doesn't have real
|
|
% floating point calculations, it is much more efficient and accurate to do
|
|
% things this way. One can also use the unix facility 'spline' now to
|
|
% generate smooth curves with equidistant ``dots''.
|
|
% NOTE: the external file of coordinates must have x y pairs with a space
|
|
% between them. Also it is suggested that some extension such as '.put'
|
|
% be used for such datafiles to distinguish them in which case it must
|
|
% be explicitely specified in the 1st argument so that TeX doesn't look
|
|
% for a .tex extension.
|
|
% The % char remains valid as a comment char and such lines are ignored;
|
|
% however, there should be atleast one space after the second entry if a
|
|
% comment is on the same line as data since % eats up the newline.
|
|
%-----------------------------------------------------------------------
|
|
\long\def\splittwoargs#1 #2 {(#1,#2)}
|
|
%
|
|
\newif\if@stillmore
|
|
\newread\@datafile
|
|
\long\def\putfile#1#2{\openin\@datafile = #1
|
|
\@stillmoretrue
|
|
\loop
|
|
\ifeof\@datafile\relax\else\read\@datafile to\@dataline\fi
|
|
%if file nonexistent, do nothing.
|
|
\ifeof\@datafile\@stillmorefalse
|
|
\else\ifx\@dataline\@empty \relax
|
|
\else
|
|
\expandafter\expandafter\expandafter\put\expandafter\splittwoargs%
|
|
\@dataline{#2}
|
|
\fi
|
|
\fi
|
|
\if@stillmore
|
|
\repeat
|
|
\closein\@datafile
|
|
}
|
|
%----------------------------------------------------------------------
|
|
\makeatother
|