From e0c6872cf40896c7be36b11dcc744620f10adf1d Mon Sep 17 00:00:00 2001
From: Norbert Preining <norbert@preining.info>
Date: Mon, 2 Sep 2019 13:46:59 +0900
Subject: Initial commit

---
 graphics/pgf/base/tex/pgfsys-dvi.def | 394 +++++++++++++++++++++++++++++++++++
 1 file changed, 394 insertions(+)
 create mode 100644 graphics/pgf/base/tex/pgfsys-dvi.def

(limited to 'graphics/pgf/base/tex/pgfsys-dvi.def')

diff --git a/graphics/pgf/base/tex/pgfsys-dvi.def b/graphics/pgf/base/tex/pgfsys-dvi.def
new file mode 100644
index 0000000000..a6397752ff
--- /dev/null
+++ b/graphics/pgf/base/tex/pgfsys-dvi.def
@@ -0,0 +1,394 @@
+% Copyright 2006 by Till Tantau
+%
+% This file may be distributed and/or modified
+%
+% 1. under the LaTeX Project Public License and/or
+% 2. under the GNU Public License.
+%
+% See the file doc/generic/pgf/licenses/LICENSE for more details.
+
+\ProvidesFileRCS{pgfsys-dvi.def}
+
+% Driver commands for pure, ultra-portable dvi, in the tradition of
+% old-style LaTeX pictures.
+%
+% Do not expect magic from this file
+
+
+\newtoks\pgf@sys@dvi@path
+\def\pgf@sys@dvi@addtopath#1{\pgf@sys@dvi@path\expandafter{\the\pgf@sys@dvi@path#1}}
+
+% Placing an object:
+\def\pgf@sys@dvi@put#1#2#3{%
+  {%
+    \setbox\pgf@hbox=\hbox{\raise#2\hbox to0pt{\kern#1\relax#3\hss}}%
+    \wd\pgf@hbox=0pt%
+    \ht\pgf@hbox=0pt%
+    \dp\pgf@hbox=0pt%
+    \box\pgf@hbox%
+  }%
+}
+
+\def\pgf@sys@dvi@drawrect#1#2#3#4{%
+  {%
+    \pgf@x=#1%
+    \pgf@y=#2%
+    \pgf@xa=#3%
+    \pgf@ya=#4%
+    \ifdim\pgf@xa<0pt%
+      \advance\pgf@x by\pgf@xa%
+      \pgf@xa=-\pgf@xa%
+    \fi%
+    \ifdim\pgf@ya<0pt%
+      \advance\pgf@y by\pgf@ya%
+      \pgf@ya=-\pgf@ya%
+    \fi%
+    \pgf@sys@dvi@put{\pgf@x}{\pgf@y}{\vrule width\pgf@xa height\pgf@ya}%
+  }%
+}
+
+\def\pgf@sys@dvi@bezier{%
+  {%
+    % First iteration:
+    \pgf@x=\pgf@time@t\pgf@x\advance\pgf@x by\pgf@time@s\pgf@xa%
+    \pgf@y=\pgf@time@t\pgf@y\advance\pgf@y by\pgf@time@s\pgf@ya%
+    \pgf@xa=\pgf@time@t\pgf@xa\advance\pgf@xa by\pgf@time@s\pgf@xb%
+    \pgf@ya=\pgf@time@t\pgf@ya\advance\pgf@ya by\pgf@time@s\pgf@yb%
+    \pgf@xb=\pgf@time@t\pgf@xb\advance\pgf@xb by\pgf@time@s\pgf@xc%
+    \pgf@yb=\pgf@time@t\pgf@yb\advance\pgf@yb by\pgf@time@s\pgf@yc%
+    % Second iteration:
+    \pgf@x=\pgf@time@t\pgf@x\advance\pgf@x by\pgf@time@s\pgf@xa%
+    \pgf@y=\pgf@time@t\pgf@y\advance\pgf@y by\pgf@time@s\pgf@ya%
+    \pgf@xa=\pgf@time@t\pgf@xa\advance\pgf@xa by\pgf@time@s\pgf@xb%
+    \pgf@ya=\pgf@time@t\pgf@ya\advance\pgf@ya by\pgf@time@s\pgf@yb%
+    % Third iteration:
+    \pgf@x=\pgf@time@t\pgf@x\advance\pgf@x by\pgf@time@s\pgf@xa%
+    \pgf@y=\pgf@time@t\pgf@y\advance\pgf@y by\pgf@time@s\pgf@ya%
+    %
+    \advance\pgf@x by-.5\pgf@sys@dvi@linewidth%
+    \advance\pgf@y by-.5\pgf@sys@dvi@linewidth%
+    \pgf@sys@dvi@drawrect{\pgf@x}{\pgf@y}{\pgf@sys@dvi@linewidth}{\pgf@sys@dvi@linewidth}%
+  }%
+}
+
+\def\pgf@sys@dvi@drawcurve#1#2#3#4#5#6#7#8{%
+  {%
+    \pgf@x=#1%
+    \pgf@y=#2%
+    \pgf@xa=#3%
+    \pgf@ya=#4%
+    \pgf@xb=#5%
+    \pgf@yb=#6%
+    \pgf@xc=#7%
+    \pgf@yc=#8%
+    % Compute number of steps:
+    \pgfutil@tempdima=\pgf@x%
+    \advance\pgfutil@tempdima by-\pgf@xa%
+    \ifdim\pgfutil@tempdima<0pt%
+      \pgfutil@tempdimb=-\pgfutil@tempdima%
+    \else%
+      \pgfutil@tempdimb=\pgfutil@tempdima%
+    \fi%
+    \pgfutil@tempdima=\pgf@y%
+    \advance\pgfutil@tempdima by-\pgf@ya%
+    \ifdim\pgfutil@tempdima<0pt%
+      \pgfutil@tempdima=-\pgfutil@tempdima%
+    \fi%
+    \ifdim\pgfutil@tempdima>\pgfutil@tempdimb%
+      \pgfutil@tempdimb=\pgfutil@tempdima%
+    \fi%
+    \pgfutil@tempdima=\pgf@xb%
+    \advance\pgfutil@tempdima by-\pgf@xc%
+    \ifdim\pgfutil@tempdima<0pt%
+      \pgfutil@tempdima=-\pgfutil@tempdima%
+    \fi%
+    \ifdim\pgfutil@tempdima>\pgfutil@tempdimb%
+      \pgfutil@tempdimb=\pgfutil@tempdima%
+    \fi%
+    \pgfutil@tempdima=\pgf@yb%
+    \advance\pgfutil@tempdima by-\pgf@yc%
+    \ifdim\pgfutil@tempdima<0pt%
+      \pgfutil@tempdima=-\pgfutil@tempdima%
+    \fi%
+    \ifdim\pgfutil@tempdima>\pgfutil@tempdimb%
+      \pgfutil@tempdimb=\pgfutil@tempdima%
+    \fi%
+    \pgfutil@tempdima=\pgf@x%
+    \advance\pgfutil@tempdima by-\pgf@xc%
+    \ifdim\pgfutil@tempdima<0pt%
+      \pgfutil@tempdima=-\pgfutil@tempdima%
+    \fi%
+    \ifdim\pgfutil@tempdima>\pgfutil@tempdimb%
+      \pgfutil@tempdimb=\pgfutil@tempdima%
+    \fi%
+    \pgfutil@tempdima=\pgf@y%
+    \advance\pgfutil@tempdima by-\pgf@yc%
+    \ifdim\pgfutil@tempdima<0pt%
+      \pgfutil@tempdima=-\pgfutil@tempdima%
+    \fi%
+    \ifdim\pgfutil@tempdima>\pgfutil@tempdimb%
+      \pgfutil@tempdimb=\pgfutil@tempdima%
+    \fi%
+    \pgfutil@tempcnta=\pgfutil@tempdimb%
+    \ifdim\pgf@sys@dvi@linewidth>0.3pt%
+      \pgfutil@tempdimb=0.15pt%
+    \else%
+      \ifdim\pgf@sys@dvi@linewidth<0.05pt%
+        \pgfutil@tempdimb=.025pt%
+      \else%
+        \pgfutil@tempdimb=.5\pgf@sys@dvi@linewidth%
+      \fi%
+    \fi%
+    \pgfutil@tempcntb=\pgfutil@tempdimb%
+    \divide\pgfutil@tempcnta by\pgfutil@tempcntb\relax%
+    \ifnum\pgfutil@tempcnta>0\relax%
+      \pgfutil@tempcntb=0\relax%
+      \loop%
+        {%
+          \pgfutil@tempdima=\the\pgfutil@tempcntb pt%
+          \pgfutil@tempdimb=\the\pgfutil@tempcnta pt%
+          \advance\pgfutil@tempdimb by-\pgfutil@tempdima\relax%
+          \divide\pgfutil@tempdima by\pgfutil@tempcnta\relax%
+          \divide\pgfutil@tempdimb by\pgfutil@tempcnta\relax%
+          \edef\pgf@time@t{\pgf@sys@tonumber{\pgfutil@tempdima}}%
+          \edef\pgf@time@s{\pgf@sys@tonumber{\pgfutil@tempdimb}}%
+          \pgf@sys@dvi@bezier%
+        }%
+        \advance\pgfutil@tempcntb by1\relax
+      \ifnum\pgfutil@tempcntb<\pgfutil@tempcnta%
+        {\def\pgf@time@t{1}\def\pgf@time@s{0}\pgf@sys@dvi@bezier}%
+      \repeat%
+    \fi%
+  }%
+}
+
+% Text:
+\def\pgfsys@hbox#1{%
+  \pgfsys@begin@idscope%
+  \wd#1=0pt%
+  \ht#1=0pt%
+  \dp#1=0pt%
+  \pgf@sys@dvi@put{\pgf@sys@dvi@pt@x}{\pgf@sys@dvi@pt@y}{\box#1}%
+  \pgfsys@end@idscope%
+}
+
+
+
+% Literals:
+
+\def\pgfsys@invoke#1{#1}
+
+
+% Buffered path construction:
+
+\def\pgfsys@moveto#1#2{\pgfsysprotocol@literal{\noexpand\pgf@sys@dvi@addtopath{\noexpand\pgf@sys@dvi@moveto{#1}{#2}}}}
+\def\pgfsys@lineto#1#2{\pgfsysprotocol@literal{\noexpand\pgf@sys@dvi@addtopath{\noexpand\pgf@sys@dvi@lineto{#1}{#2}}}}
+\def\pgfsys@curveto#1#2#3#4#5#6{\pgfsysprotocol@literal{\noexpand\pgf@sys@dvi@addtopath{\noexpand\pgf@sys@dvi@curveto{#1}{#2}{#3}{#4}{#5}{#6}}}}
+\def\pgfsys@rect#1#2#3#4{\pgfsysprotocol@literal{\noexpand\pgf@sys@dvi@addtopath{\noexpand\pgf@sys@dvi@rect{#1}{#2}{#3}{#4}}}}
+\def\pgfsys@closepath{\pgfsysprotocol@literal{\noexpand\pgf@sys@dvi@addtopath{\noexpand\pgf@sys@dvi@closepath}}}
+
+
+% Scoping
+\def\pgfsys@beginscope{\pgfsysprotocol@literal{\noexpand\pgf@sys@dvi@beginscope}}%
+\def\pgfsys@endscope{\pgfsysprotocol@literal{\noexpand\pgf@sys@dvi@endscope}}%
+
+\def\pgf@sys@dvi@beginscope{%
+  % Save current stuff...
+  \edef\pgf@sys@dvi@return{%
+    \global\pgf@sys@dvi@linewidth=\the\pgf@sys@dvi@linewidth%
+    \global\pgf@sys@dvi@pt@x=\the\pgf@sys@dvi@pt@x%
+    \global\pgf@sys@dvi@pt@y=\the\pgf@sys@dvi@pt@y%
+    \gdef\noexpand\pgf@sys@dvi@pt@aa{\pgf@sys@dvi@pt@aa}%
+    \gdef\noexpand\pgf@sys@dvi@pt@ab{\pgf@sys@dvi@pt@ab}%
+    \gdef\noexpand\pgf@sys@dvi@pt@ba{\pgf@sys@dvi@pt@ba}%
+    \gdef\noexpand\pgf@sys@dvi@pt@bb{\pgf@sys@dvi@pt@bb}%
+  }%
+  \begingroup%
+  \ignorespaces%
+}
+
+\def\pgf@sys@dvi@endscope{%
+  \endgroup%
+  \pgf@sys@dvi@return%
+}
+
+
+
+% Line width
+
+\newdimen\pgf@sys@dvi@linewidth
+\pgf@sys@dvi@linewidth=0.4pt
+
+\def\pgfsys@setlinewidth#1{\global\pgf@sys@dvi@linewidth=#1\relax}
+
+
+% Transformation matrix
+
+\newdimen\pgf@sys@dvi@pt@x
+\newdimen\pgf@sys@dvi@pt@y
+
+\def\pgf@sys@dvi@pt@aa{1.0} \def\pgf@sys@dvi@pt@ab{0.0}
+\def\pgf@sys@dvi@pt@ba{0.0} \def\pgf@sys@dvi@pt@bb{1.0}
+
+\def\pgf@sys@dvi@pos@transform#1#2{%
+  \pgf@pt@temp=#1%
+  #1=\pgf@sys@dvi@pt@aa#1%
+  \advance#1 by\pgf@sys@dvi@pt@ba#2%
+  #2=\pgf@sys@dvi@pt@bb#2%
+  \advance#2 by\pgf@sys@dvi@pt@ab\pgf@pt@temp%
+  \advance#1 by\pgf@sys@dvi@pt@x%
+  \advance#2 by\pgf@sys@dvi@pt@y%
+}
+
+\def\pgf@sys@dvi@transformcm#1#2#3#4#5#6{%
+  {%
+    \pgf@xc=#5%
+    \pgf@yc=#6%
+    %
+    \pgf@x=#1pt%
+    \pgf@y=#2pt%
+    %
+    \pgf@xa=\pgf@sys@dvi@pt@aa\pgf@x%
+    \advance\pgf@xa by \pgf@sys@dvi@pt@ba\pgf@y%
+    %
+    \pgf@ya=\pgf@sys@dvi@pt@ab\pgf@x%
+    \advance\pgf@ya by \pgf@sys@dvi@pt@bb\pgf@y%
+    %
+    \pgf@x=#3pt%
+    \pgf@y=#4pt%
+    %
+    \pgf@xb=\pgf@sys@dvi@pt@aa\pgf@x%
+    \advance\pgf@xb by \pgf@sys@dvi@pt@ba\pgf@y%
+    %
+    \pgf@yb=\pgf@sys@dvi@pt@ab\pgf@x%
+    \advance\pgf@yb by \pgf@sys@dvi@pt@bb\pgf@y%
+    %
+    \pgf@x=\pgf@sys@dvi@pt@aa\pgf@xc%
+    \advance\pgf@x by\pgf@sys@dvi@pt@ba\pgf@yc%
+    \advance\pgf@x by\pgf@sys@dvi@pt@x%
+    %
+    \pgf@y=\pgf@sys@dvi@pt@ab\pgf@xc%
+    \advance\pgf@y by\pgf@sys@dvi@pt@bb\pgf@yc%
+    \advance\pgf@y by\pgf@sys@dvi@pt@y%
+    %
+    \global\pgf@sys@dvi@pt@x=\pgf@x%
+    \global\pgf@sys@dvi@pt@y=\pgf@y%
+    \xdef\pgf@sys@dvi@pt@aa{\pgf@sys@tonumber{\pgf@xa}}%
+    \xdef\pgf@sys@dvi@pt@ab{\pgf@sys@tonumber{\pgf@ya}}%
+    \xdef\pgf@sys@dvi@pt@ba{\pgf@sys@tonumber{\pgf@xb}}%
+    \xdef\pgf@sys@dvi@pt@bb{\pgf@sys@tonumber{\pgf@yb}}%
+  }%
+}
+
+\def\pgfsys@transformcm#1#2#3#4#5#6{%
+  {%
+    \pgf@x=#5\relax%
+    \pgf@y=#6\relax%
+    \pgfsysprotocol@literal{\noexpand\pgf@sys@dvi@transformcm{#1}{#2}{#3}{#4}{\the\pgf@x}{\the\pgf@y}}%
+  }%
+}
+
+
+% Stroking
+
+\def\pgfsys@stroke{\pgfsysprotocol@literal{\noexpand\pgf@sys@dvi@stroke}}%
+
+
+\def\pgf@sys@dvi@stroke{%
+  \let\pgf@sys@dvi@moveto=\pgf@sys@dvi@moveto@stroke%
+  \let\pgf@sys@dvi@lineto=\pgf@sys@dvi@lineto@stroke%
+  \let\pgf@sys@dvi@curveto=\pgf@sys@dvi@curveto@stroke%
+  \let\pgf@sys@dvi@rect=\pgf@sys@dvi@rect@stroke%
+  \let\pgf@sys@dvi@closepath=\pgf@sys@dvi@closepath@stroke%
+  {\the\pgf@sys@dvi@path}%
+  \pgf@sys@dvi@path{}%
+}
+
+\def\pgf@sys@dvi@moveto@stroke#1#2{%
+  % These two store the current position:
+  \pgf@xc=#1\relax%
+  \pgf@yc=#2\relax%
+  % These two store the last moveto:
+  \pgf@xb=\pgf@xc%
+  \pgf@yb=\pgf@yc%
+}
+
+\def\pgf@sys@dvi@lineto@stroke#1#2{%
+  {%
+    \pgf@xa=#1\relax%
+    \pgf@ya=#2\relax%
+    \pgf@x=\pgf@xc%
+    \pgf@y=\pgf@yc%
+    \pgf@sys@dvi@pos@transform{\pgf@xa}{\pgf@ya}%
+    \pgf@sys@dvi@pos@transform{\pgf@x}{\pgf@y}%
+    % Now, we need to draw a line from (x/y) to (xa/ya)
+    %
+    % Horizontal?
+    \ifdim\pgf@y=\pgf@ya%
+      % Ok, that should be easy...
+      \pgf@xb=\pgf@xa%
+      \advance\pgf@xb by-\pgf@x%
+      \advance\pgf@y by-0.5\pgf@sys@dvi@linewidth%
+      \pgf@sys@dvi@drawrect{\pgf@x}{\pgf@y}{\pgf@xb}{\pgf@sys@dvi@linewidth}%
+    \else%
+      \ifdim\pgf@x=\pgf@xa%
+        % Ok, also easy...
+        \pgf@yb=\pgf@ya%
+        \advance\pgf@yb by-\pgf@y%
+        \advance\pgf@x by-0.5\pgf@sys@dvi@linewidth%
+        \pgf@sys@dvi@drawrect{\pgf@x}{\pgf@y}{\pgf@sys@dvi@linewidth}{\pgf@yb}%
+      \else%
+        \edef\pgf@marshal{\noexpand\pgf@sys@dvi@drawcurve{\the\pgf@x}{\the\pgf@y}{\the\pgf@x}{\the\pgf@y}{\the\pgf@xa}{\the\pgf@ya}{\the\pgf@xa}{\the\pgf@ya}}%
+        \pgf@marshal%
+      \fi%
+    \fi%
+  }%
+  % Remember:
+  \pgf@xc=#1\relax%
+  \pgf@yc=#2\relax%
+}
+
+
+\def\pgf@sys@dvi@curveto@stroke#1#2#3#4#5#6{%
+  \pgf@x=\pgf@xc%
+  \pgf@y=\pgf@yc%
+  \pgf@xa=#1%
+  \pgf@ya=#2%
+  \pgf@xb=#3%
+  \pgf@yb=#4%
+  \pgf@xc=#5%
+  \pgf@yc=#6%
+  {%
+    \pgf@sys@dvi@pos@transform{\pgf@x}{\pgf@y}%
+    \pgf@sys@dvi@pos@transform{\pgf@xa}{\pgf@ya}%
+    \pgf@sys@dvi@pos@transform{\pgf@xb}{\pgf@yb}%
+    \pgf@sys@dvi@pos@transform{\pgf@xc}{\pgf@yc}%
+    \pgf@sys@dvi@drawcurve{\pgf@x}{\pgf@y}{\pgf@xa}{\pgf@ya}{\pgf@xb}{\pgf@yb}{\pgf@xc}{\pgf@yc}%
+  }%
+}
+
+\def\pgf@sys@dvi@closepath@stroke{%
+  \pgf@sys@dvi@lineto@stroke{\pgf@xc}{\pgf@yc}%
+}
+
+\def\pgf@sys@dvi@rect@stroke#1#2#3#4{%
+  \pgf@x=#1\relax%
+  \pgf@y=#2\relax%
+  \pgf@xa=#3\relax%
+  \pgf@ya=#4\relax%
+  \advance\pgf@xa by\pgf@x%
+  \advance\pgf@ya by\pgf@y%
+  \pgf@sys@dvi@moveto@stroke{\pgf@x}{\pgf@y}%
+  \pgf@sys@dvi@lineto@stroke{\pgf@xa}{\pgf@y}%
+  \pgf@sys@dvi@lineto@stroke{\pgf@xa}{\pgf@ya}%
+  \pgf@sys@dvi@lineto@stroke{\pgf@x}{\pgf@ya}%
+  \pgf@sys@dvi@closepath@stroke%
+}
+
+
+
+\endinput
+
+%%% Local Variables:
+%%% mode: latex
+%%% End:
-- 
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