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% \iffalse
% trsym.dtx
% Copyright (c) 2000 Jan Holfert
%
% This file is part of the `trsym' program.
%
% This program may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.2
% of this license or (at your option) any later version.
% The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.2 or later is part of all distributions of LaTeX
% version 1999/12/01 or later.
%
% This program consists of all files listed in manifest.txt.
% \fi
%
% \iffalse
%<*!metafont&!metafont10&!metafont12>
\def\trsymfileversion{1.0}
\def\trsymfiledate{2000/06/25}
%</!metafont&!metafont10&!metafont12>
% \fi
%
% \iffalse
%<*package>
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{trsym}
[\trsymfiledate v\trsymfileversion transformation symbol font]
%</package>
% \fi
%
% \iffalse
%<*driver>
\NeedsTeXFormat{LaTeX2e}
\documentclass{ltxdoc}
\usepackage{trsym}
\begin{document}
\DocInput{trsym.dtx}
\end{document}
%</driver>
% \fi
%
% \RecordChanges
% \OnlyDescription
%
% \title{\textsf{trsym} package\\ version \trsymfileversion}
% \author{Jan Holfert, \texttt{jan.holfert@gmx.net}}
% \date{\trsymfiledate}
%
% \changes{1.0}{2000/06/25}{Released version 1.0}
%
% \newcommand{\tfh}{\TransformHoriz}
% \newcommand{\itfh}{\InversTransformHoriz}
% \newcommand{\tfv}{\TransformVert}
% \newcommand{\itfv}{\InversTransformVert}
% \newcommand{\bs}{\textbackslash}
%
% \maketitle
%
% \section*{Installation}
% If you see the symbols in section ``Usage'', the files are
% already installed. There is no need to do the installation
% again. Otherwise, do the following:
% \begin{enumerate}
% \item Create a subdirectory \textsf{trsym} in your local source path
% for \textsf{MetaFont} files. If you use the configuration file for
% the \textsf{docstrip} utility doing this is obligatory.
% \item Run ``\textsf{latex trsym.ins}''. If you use \textsf{docstrips}'
% configuration file, everything is copied to its right
% place. Otherwise, copy \textsf{trsy.mf}, \textsf{trsy10.mf} and
% \textsf{trsy12.mf} into the subdirectory \textsf{trsym}
% (e.g. \bs\bs localtexmf\bs fonts\bs source\bs trsym). Copy
% \textsf{utrsy.fd} and \textsf{trsym.sty} into a subdirectory
% \textsf{trsym} in your local \LaTeX{} path (e.g. \bs\bs
% localtexmf\bs tex\bs latex\bs trsym)
% \end{enumerate}
% \section*{Usage}
% Write \textsf{\bs usepackage\{trsym\}} into your \LaTeX{} file's preamble.
% In \textsf{mathmode} use the following commands generating the
% according symbol. The commands in parenthesis are short versions of
% the commands as I used to declare in my documents.\\[1em]
% \begin{displaymath}
% \begin{array}{lc}
% \mbox{command} & \mbox{symbol}\\
% \hline
% \mbox{\rule{0pt}{1.1em}\textsf{\bs TransformHoriz (\bs tfh)}} & \tfh\\
% \mbox{\textsf{\bs InversTransformHoriz (\bs itfh)}} & \itfh\\
% \mbox{\textsf{\bs TransformVert (\bs tfv)}} & \tfv\\
% \mbox{\textsf{\bs InversTransformVert (\bs itfv)}} & \itfv
% \end{array}
% \end{displaymath}
%
% \StopEventually
%
% \begin{macrocode}
%<*package>
\DeclareSymbolFont{transfsymbol}{U}{trsy}{m}{n}
\DeclareMathSymbol{\TransformHoriz}{\mathrel}{transfsymbol}{0}
\DeclareMathSymbol{\InversTransformHoriz}{\mathrel}{transfsymbol}{1}
\DeclareMathSymbol{\TransformVert}{\mathrel}{transfsymbol}{2}
\DeclareMathSymbol{\InversTransformVert}{\mathrel}{transfsymbol}{3}
%</package>
%<*fontdefinition>
\ProvidesFile{utrsy.fd}
[\trsymfiledate v\trsymfileversion transformation symbol font definitions]
\DeclareFontFamily{U}{trsy}{}
\DeclareFontShape{U}{trsy}{m}{n}{
<-11> trsy10
<11-> trsy12
}{}
%</fontdefinition>
%<*metafont>
font_identifier:="TRANSFORMATION";
qqs:=ceiling(qqs#*hppp);
define_pixels(qqw,qqh);
fontdimen 1: 0,0,0,0,0,0,0,qqs#;
let cmchar=\;
cmchar "horizontal transformation symbol";
beginchar(0,1.5qqw#,.75qqh#,0);
pickup pencircle scaled qqs;
y1=y2=y3=y4=1/2h;
20x1=5x2=4w;
70x3=30x4=21w;
diam_sharp:=1/5w;
draw fullcircle scaled diam_sharp shifted z1;
draw z3--z4;
pickup pencircle scaled (diam_sharp+qqs);
drawdot z2;
endchar;
cmchar "horizontal inverse transformation symbol";
beginchar(1,1.5qqw#,.75qqh#,0);
pickup pencircle scaled qqs;
y1=y2=y3=y4=1/2h;
20x1=5x2=4w;
70x3=30x4=21w;
diam_sharp:=1/5w;
draw fullcircle scaled diam_sharp shifted z2;
draw z3--z4;
pickup pencircle scaled (diam_sharp+qqs);
drawdot z1;
endchar;
cmchar "vertical transformation symbol";
beginchar(2,.75qqw#,1.15qqh#,.35qqh#);
pickup pencircle scaled qqs;
x1=x2=x3=x4=1/2w;
5(y1+d)=20(y2+d)=4(h+d);
70(y3+d)=30(y4+d)=21(h+d);
diam_sharp:=1/5(h+d);
draw fullcircle scaled diam_sharp shifted z1;
draw z3--z4;
pickup pencircle scaled (diam_sharp+qqs);
drawdot z2;
endchar;
cmchar "vertical inverse transformation symbol";
beginchar(3,.75qqw#,1.15qqh#,.35qqh#);
pickup pencircle scaled qqs;
x1=x2=x3=x4=1/2w;
5(y1+d)=20(y2+d)=4(h+d);
70(y3+d)=30(y4+d)=21(h+d);
diam_sharp:=1/5(h+d);
draw fullcircle scaled diam_sharp shifted z2;
draw z3--z4;
pickup pencircle scaled (diam_sharp+qqs);
drawdot z1;
endchar;
bye
%</metafont>
%<*metafont10>
inner bye;
if not unknown cmbase:
errhelp "This font must be generated using the plain base.";
errmessage "You can't use cmbase for this font!";
expandafter bye
fi
font_size 10pt#;
mode_setup;
qqs# = .4pt#;
qqh# = 10pt#;
qqw# = 10pt#;
input trsy;
bye.
%</metafont10>
%<*metafont12>
inner bye;
if not unknown cmbase:
errhelp "This font must be generated using the plain base.";
errmessage "You can't use cmbase for this font!";
expandafter bye
fi
font_size 12pt#;
mode_setup;
qqs# = .4pt#;
qqh# = 12pt#;
qqw# = 12pt#;
input trsy;
bye.
%</metafont12>
% \end{macrocode}
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