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pacmath.sty
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pacmath.sty
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\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{pacmath}[2019-08-03 Pacmath]
\RequirePackage{amsmath}
\RequirePackage{pict2e}
\makeatletter
% Fix pict2e bug that prevents using decimal macro expansions.
% See the author's question at
% https://tex.stackexchange.com/questions/502733/pict2e-cannot-use-decimal-line-slope-argument-inserted-from-macro/502735#502735
\renewcommand*\pIIe@checkslopeargs[3]{%
\edef\@tempa{#1}\expandafter\pIIe@checkslopearg\@tempa.:{#3}%
\edef\@tempa{#2}\expandafter\pIIe@checkslopearg\@tempa.:{#3}%
\ifdim #1\p@=\z@ \ifdim #2\p@=\z@ \@badlinearg \fi\fi}
\def\pIIe@checkslopearg #1.#2:#3{%
\def\@tempa{#1}%
\ifx\@tempa\empty\def\@tempa{0}\fi
\ifx\@tempa\space\def\@tempa{0}\fi% V added space
\ifnum\ifnum\@tempa<\z@-\fi\@tempa>#3 \@badlinearg \fi}
% Internal structure.
\@ifdefinable\if@pac@eye@{\newif\if@pac@eye@}
\@ifdefinable\if@pac@mouth@{\newif\if@pac@mouth@}
% Drawing macros.
% Arguments: #1 -- font style
% #2 -- line thickness
% #3 -- eye diameter
%%% Pacman %%%
\def\@pac@man@X{1.305}
\def\@pac@man@Y{0.80}
\def\@pac@man@T{1.5}
\def\@pac@man@regionA@control@X{0.6525}
\def\@pac@man@regionA@control@Y{0.375}
\def\@pac@man@regionB@control@X{0.87}
\def\@pac@man@regionB@control@Y{1.5}
\def\@pac@man@regionC@control@X{1.725}
\def\@pac@man@regionC@control@Y{0}
\def\@pac@man@eye@X{0.15}
\def\@pac@man@eye@Y{0.88}
\newcommand*\@pac@man[4]{%
\setlength\unitlength{\fontdimen 22 #1\tw@}%
\vrule \@width\z@ \@height\z@ \@depth\@ne\unitlength%
\begin{picture}(2.75,2.85)(-1.32,-1.)
\linethickness{#4\p@}%
\qbezier(0, 0)(\@pac@man@regionA@control@X, \@pac@man@regionA@control@Y)(\@pac@man@X, \@pac@man@Y)%
\qbezier(\@pac@man@X, \@pac@man@Y)(\@pac@man@regionB@control@X, \@pac@man@regionB@control@Y)(0, \@pac@man@T)%
\qbezier(0, \@pac@man@T)(-\@pac@man@regionB@control@X, \@pac@man@regionB@control@Y)(-\@pac@man@X, \@pac@man@Y)%
\linethickness{#2\p@}%
\qbezier(-\@pac@man@X, \@pac@man@Y)(-\@pac@man@regionC@control@X, 0)(-\@pac@man@X, -\@pac@man@Y)%
\qbezier(-\@pac@man@X, -\@pac@man@Y)(-\@pac@man@regionB@control@X, -\@pac@man@regionB@control@Y)(0, -\@pac@man@T)%
\qbezier(0, -\@pac@man@T)(\@pac@man@regionB@control@X, -\@pac@man@regionB@control@Y)(\@pac@man@X, -\@pac@man@Y)%
\qbezier(\@pac@man@X, -\@pac@man@Y)(\@pac@man@regionA@control@X, -\@pac@man@regionA@control@Y)(0, 0)%
\if@pac@eye@
\put(\@pac@man@eye@X, \@pac@man@eye@Y){\circle*{#3}}%
\fi
\end{picture}
}
%%% Ghost %%%
\def\@pac@ghost@body@height{2.68}
\def\@pac@ghost@body@width{3}
\def\@pac@ghost@body@arc@X{1.5}
\def\@pac@ghost@body@arc@Y{5}
\def\@pac@ghost@eyeL@X{1.15}
\def\@pac@ghost@eyeR@X{2.15}
\def\@pac@ghost@eye@Y{2.35}
\def\@pac@ghost@cloth@outer@control@Y{0.5}
\def\@pac@ghost@cloth@inner@control@Y{0.5}
\def\@pac@ghost@cloth@general@Y{0.6}
\def\@pac@ghost@clothA@X{0.5}
\def\@pac@ghost@clothA@Y{\@pac@ghost@cloth@general@Y}
\def\@pac@ghost@clothA@control@X{.125}
\def\@pac@ghost@clothB@X{1}
\def\@pac@ghost@clothB@control@X{0.75}
\def\@pac@ghost@clothC@X{1.5}
\def\@pac@ghost@clothC@Y{\@pac@ghost@cloth@general@Y}
\def\@pac@ghost@clothC@control@X{1.25}
\def\@pac@ghost@clothD@X{2}
\def\@pac@ghost@clothD@control@X{1.75}
\def\@pac@ghost@clothE@X{2.5}
\def\@pac@ghost@clothE@Y{\@pac@ghost@cloth@general@Y}
\def\@pac@ghost@clothE@control@X{2.2}
\def\@pac@ghost@clothF@X{3}
\def\@pac@ghost@clothF@control@X{2.875}
\newcommand*\@pac@ghost[4]{%
\setlength\unitlength{\fontdimen 22 #1\tw@}%
\vrule \@width\z@ \@height\z@ \@depth\@ne\unitlength%
\begin{picture}(3.6,3.8)(-0.2,.65)
\linethickness{#4\p@}%
\put(0, 0){\line(0, \@pac@ghost@body@height){\@pac@ghost@body@height}}
\linethickness{#2\p@}%
\put(\@pac@ghost@body@arc@X, \@pac@ghost@body@height){\oval(\@pac@ghost@body@width, \@pac@ghost@body@height)[t]}
\put(\@pac@ghost@body@width, 0){\line(0, \@pac@ghost@body@height){\@pac@ghost@body@height}}
\qbezier(0,0)(\@pac@ghost@clothA@control@X, \@pac@ghost@cloth@outer@control@Y)(\@pac@ghost@clothA@X, \@pac@ghost@clothA@Y)
\qbezier(\@pac@ghost@clothA@X, \@pac@ghost@clothA@Y)(\@pac@ghost@clothB@control@X, \@pac@ghost@cloth@inner@control@Y)(\@pac@ghost@clothB@X, 0)
\linethickness{#4\p@}%
\qbezier(\@pac@ghost@clothB@X, 0)(\@pac@ghost@clothC@control@X, \@pac@ghost@cloth@inner@control@Y)(\@pac@ghost@clothC@X, \@pac@ghost@clothC@Y)
\linethickness{#2\p@}%
\qbezier(\@pac@ghost@clothC@X, \@pac@ghost@clothC@Y)(\@pac@ghost@clothD@control@X, \@pac@ghost@cloth@inner@control@Y)(\@pac@ghost@clothD@X, 0)
\linethickness{#4\p@}%
\qbezier(\@pac@ghost@clothD@X, 0)(\@pac@ghost@clothE@control@X,\@pac@ghost@cloth@inner@control@Y)(\@pac@ghost@clothE@X, \@pac@ghost@clothE@Y)
\linethickness{#2\p@}%
\qbezier(\@pac@ghost@clothE@X, \@pac@ghost@clothE@Y)(\@pac@ghost@clothF@control@X, \@pac@ghost@cloth@outer@control@Y)(\@pac@ghost@clothF@X, 0)
\if@pac@eye@
\put(\@pac@ghost@eyeL@X, \@pac@ghost@eye@Y){\circle*{#3}}
\put(\@pac@ghost@eyeR@X, \@pac@ghost@eye@Y){\circle*{#3}}
\fi
\end{picture}
}
% Math mode verification.
\newcommand*\@pac@if@bold@math{%
\def\@tempa{bold}%
\ifx\math@version\@tempa
\expandafter\@firstoftwo
\else
\expandafter\@secondoftwo
\fi
}
% Mode-selection backend.
\def\@pac@bold@textfont@thickness{0.5}
\def\@pac@bold@textfont@eye{0.45}
\def\@pac@bold@scriptfont@thickness{0.2}
\def\@pac@bold@scriptfont@eye{0.1}
\def\@pac@bold@sscriptfont@thickness{0.01}
\def\@pac@bold@sscriptfont@eye{0}
\def\@pac@textfont@man@thickness{0.56}
\def\@pac@textfont@man@thickness@nib{0.45}
\def\@pac@textfont@ghost@thickness{0.6}
\def\@pac@textfont@ghost@thickness@nib{0.5}
\def\@pac@textfont@man@eye{0.4}
\def\@pac@textfont@ghost@eye{0.5}
\def\@pac@scriptfont@thickness{0.2}
\def\@pac@scriptfont@eye{0.3}
\def\@pac@sscriptfont@thickness{0.01}
\def\@pac@sscriptfont@eye{0}
\newcommand*\@pac@mathman{%
\mathop{%
\@pac@if@bold@math{%
\mathchoice{%
\@pac@man \textfont {\@pac@bold@textfont@thickness}{\@pac@bold@textfont@eye}{\@pac@textfont@man@thickness@nib}%
}{%
\@pac@man \textfont {\@pac@bold@textfont@thickness}{\@pac@bold@textfont@eye}{\@pac@textfont@man@thickness@nib}%
}{%
\@pac@man \scriptfont {\@pac@bold@scriptfont@thickness}{\@pac@bold@scriptfont@eye}{\@pac@textfont@man@thickness@nib}%
}{%
\@pac@man \scriptscriptfont {\@pac@bold@sscriptfont@thickness}{\@pac@bold@sscriptfont@eye}{\@pac@textfont@man@thickness@nib}%
}%
}{%
\mathchoice{%
\@pac@man \textfont {\@pac@textfont@man@thickness}{\@pac@textfont@man@eye}{\@pac@textfont@man@thickness@nib}%
}{%
\@pac@man \textfont {\@pac@textfont@man@thickness}{\@pac@textfont@man@eye}{\@pac@textfont@man@thickness@nib}%
}{%
\@pac@man \scriptfont {\@pac@scriptfont@thickness}{\@pac@scriptfont@eye}{\@pac@textfont@man@thickness@nib}%
}{%
\@pac@man \scriptscriptfont {\@pac@sscriptfont@thickness}{\@pac@sscriptfont@eye}{\@pac@textfont@man@thickness@nib}%
}%
}%
}% \displaylimits % as per default
}
\newcommand*\@pac@mathghost{%
\mathop{%
\@pac@if@bold@math{%
\mathchoice{%
\@pac@ghost \textfont {\@pac@bold@textfont@thickness}{\@pac@bold@textfont@eye}{\@pac@textfont@ghost@thickness@nib}%
}{%
\@pac@ghost \textfont {\@pac@bold@textfont@thickness}{\@pac@bold@textfont@eye}{\@pac@textfont@ghost@thickness@nib}%
}{%
\@pac@ghost \scriptfont {\@pac@bold@scriptfont@thickness}{\@pac@bold@scriptfont@eye}{\@pac@textfont@ghost@thickness@nib}%
}{%
\@pac@ghost \scriptscriptfont {\@pac@bold@sscriptfont@thickness}{\@pac@bold@sscriptfont@eye}{\@pac@textfont@ghost@thickness@nib}%
}%
}{%
\mathchoice{%
\@pac@ghost \textfont {\@pac@textfont@ghost@thickness}{\@pac@textfont@ghost@eye}{\@pac@textfont@ghost@thickness@nib}%
}{%
\@pac@ghost \textfont {\@pac@textfont@ghost@thickness}{\@pac@textfont@ghost@eye}{\@pac@textfont@ghost@thickness@nib}%
}{%
\@pac@ghost \scriptfont {\@pac@scriptfont@thickness}{\@pac@scriptfont@eye}{\@pac@textfont@ghost@thickness@nib}%
}{%
\@pac@ghost \scriptscriptfont {\@pac@sscriptfont@thickness}{\@pac@sscriptfont@eye}{\@pac@textfont@ghost@thickness@nib}%
}%
}%
}% \displaylimits % as per default
}
% Bigop scaling backend.
\DeclareRobustCommand\bigop[2][1]{%
\mathop{\vphantom{\sum}\mathpalette\bigop@{{#1}{#2}}}\slimits@
}
\newcommand{\bigop@}[2]{\bigop@@#1#2}
\newcommand{\bigop@@}[3]{%
\vcenter{%
\sbox\z@{$#1\sum$}%
\hbox{\resizebox{\ifx#1\displaystyle#2\fi\dimexpr\ht\z@+\dp\z@}{!}{$\m@th#3$}}%
}%
}
% User-level commands.
\newcommand*\pacman{
\@ifstar
{\@pac@eye@false \@pac@mathman}%
{\@pac@eye@true \@pac@mathman}%
}
\newcommand*\bigpacman{
\@ifstar
{\DOTSB\bigop[0.77]{\@pac@eye@false \@pac@mathman}}%
{\DOTSB\bigop[0.77]{\@pac@eye@true \@pac@mathman}}%
}
\newcommand*\ghost{
\@ifstar
{\@pac@eye@false \@pac@mathghost}%
{\@pac@eye@true \@pac@mathghost}%
}
\newcommand*\bigghost{
\@ifstar
{\DOTSB\bigop[0.77]{\@pac@eye@false \@pac@mathghost}}%
{\DOTSB\bigop[0.77]{\@pac@eye@true \@pac@mathghost}}%
}
\makeatother