% Copyright 2019 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: