% !TeX root = ./examples/mouse.tex
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% This package is part of the TikZlings package
%% A package to bring cute little animals and other beings into tikz
%% Maintained by samcarter
%%
%% Project repository and bug tracker:
%% https://github.com/samcarter/tikzlings
%%
%% Released under the LaTeX Project Public License v1.3c or later
%% See https://www.latex-project.org/lppl.txt
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ProvidesPackage{tikzlings-mice}[2025/03/23 version v2.3 Drawing mice in TikZ]

\RequirePackage{tikz}
\RequirePackage{tikzlings-addons}

\newcommand*{\mouse}[1][]{%
 \begin{scope}%
   \tikzset{/mouse/.cd,#1}%
   \mouse@draw%
 \end{scope}%
 \thing[#1]%
 % adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \UseHook{tikzlings/mouse/foreground}
 \UseHook{tikzlings/foreground}
 \csname mousehookforeground\endcsname
 \csname tikzlinghookforeground\endcsname
 %
}

\newif\ifmouse@threeD
\newif\ifmouse@rotatearms
\newif\ifmouse@leftstep
\newif\ifmouse@rightstep
\newif\ifmouse@back
\newif\ifmouse@contour

\NewHook{tikzlings/mouse/background}
\NewHook{tikzlings/mouse/belly}
\NewHook{tikzlings/mouse/body}
\NewHook{tikzlings/mouse/foreground}

\tikzset{
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % Pass unknown keys on to tikz
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 /mouse/.search also={/tikz,/pgf,/thing},
 /mouse/.cd,
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % body
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 body/.store in     = \mouse@body,
 body               = gray!90!white,
 eyes/.store in     = \mouse@eyes,
 eyes               = \mouse@body!50!black,
 eye/.forward to    = /mouse/eyes,
 whiskers/.store in = \mouse@whiskers,
 whiskers           = \mouse@body!50!black,
 whisker/.forward to = /mouse/whiskers,
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % options
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 3D/.code           = \mouse@threeDtrue,
 rotatearms/.code   = \mouse@rotatearmstrue
                      \def\mouse@rotatearms{#1},
 rotate arms/.forward to = /mouse/rotatearms,
 rotate arm/.forward to = /mouse/rotatearms,
 rotatearms         = 20,
 leftstep/.code     = \mouse@leftsteptrue,
 left step/.forward to = /mouse/leftstep,
 rightstep/.code    = \mouse@rightsteptrue,
 right step/.forward to = /mouse/rightstep,
 back/.code         = \mouse@backtrue,
 contour/.code      = \mouse@contourtrue
                      \def\mouse@contour{#1}
                      \def\mouse@whiskers{#1},
 contour/.default   = black,
 outline/.forward to = /mouse/contour,
}

\def\mouse@draw{%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % minimal bounding box size
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \path (-0.625,0.1) rectangle (0.905, 2.17);
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % store the current scale factor
 % from https://github.com/samcarter/tikzlings/issues/3#issuecomment-461373494
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \pgfgettransformentries{\tmpscaleA}{\tmpscaleB}{\tmpscaleC}{\tmpscaleD}{\tmp}{\tmp}%
 \pgfmathsetmacro{\scalingfactor}{sqrt(abs(\tmpscaleA*\tmpscaleD-\tmpscaleB*\tmpscaleC))*sqrt(abs((\pgf@xx/1cm)*(\pgf@yy/1cm)-(\pgf@xy/1cm)*(\pgf@yx/1cm)))}%
 \pgfmathsetmacro{\xscalefactor}{\tmpscaleA}
 \pgfmathsetmacro{\yscalefactor}{\tmpscaleD}
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % switch between 2D, 3D and contours, from
 % https://chat.stackexchange.com/transcript/message/45991801#45991801
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \ifmouse@threeD
   \def\mouse@part@draw[##1]{\shade[ball color=##1]}
 \else% 3D
   \ifmouse@contour
     \def\mouse@part@draw[##1]{\draw[##1,\mouse@contour,fill=white,line width=\scalingfactor*0.4pt]}
   \else% contour
     \def\mouse@part@draw[##1]{\fill[##1]}
   \fi% contour
 \fi% 3D
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % Body parts
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \UseHook{tikzlings/mouse/background}
 \UseHook{tikzlings/background}
 \csname mousehookbackground\endcsname
 \csname tikzlinghookbackground\endcsname
 %
 % Feet %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \ifmouse@leftstep
   \mouse@part@draw[\mouse@body!65!white] (-0.255,0.25) ellipse[x radius=0.23, y radius=0.09];
 \else% step
   \mouse@part@draw[\mouse@body!65!white] (-0.255,0.2) ellipse[x radius=0.23, y radius=0.09];
 \fi% step
 %
 \ifmouse@rightstep
   \mouse@part@draw[\mouse@body!65!white] (0.255,0.25) ellipse[x radius=0.23, y radius=0.09];
 \else% step
   \mouse@part@draw[\mouse@body!65!white] (0.255,0.2) ellipse[x radius=0.23, y radius=0.09];
 \fi% step
 %
 % Ears %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \mouse@part@draw[\mouse@body!65!white] (0.36, 2.17) circle[radius=0.28];
 \mouse@part@draw[\mouse@body!65!white] (-0.36, 2.17) circle[radius=0.28];
 \unless\ifmouse@back
   \mouse@part@draw[\mouse@body] (0.36, 2.17) circle[radius=0.15];
   \mouse@part@draw[\mouse@body] (-0.36, 2.17) circle[radius=0.15];
 \fi% back
 %
 % Tail %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \unless\ifmouse@back
   \mouse@part@draw[\mouse@body!65!white] (1.0825, 1.6326) .. controls (1.3527, 1.7527) and (1.6609, 1.3164) .. (1.5928, 1.3124) .. controls (0.9164, 2.186) and (0.8338, 0.6325) .. (0.3708, 0.4451) .. controls (0.2529, 0.3974) and (-0.0064, 0.3874) .. (-0.0064, 0.3874) .. controls (-0.0776, 0.3765) and (-0.0862, 0.5026) .. (-0.0092, 0.5034) .. controls (-0.0092, 0.5034) and (0.0363, 0.4591) .. (0.3516, 0.54360) .. controls (0.6710, 0.6988) and (0.7613, 1.4825) .. (1.0825, 1.6326) -- cycle;
 \fi% back
 %
 % Body %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \mouse@part@draw[\mouse@body] (0.595, 0.92) .. controls (0.595, 0.26) and (0.355, 0.18) .. (0, 0.18) .. controls (-0.355, 0.18) and (-0.595, 0.26) .. (-0.595, 0.92) .. controls (-0.605, 1.58) and (-0.335, 2.11) .. (0, 2.11) .. controls (0.335, 2.11) and (0.605, 1.58) .. (0.595, 0.92) -- cycle;
 %
 % adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \UseHook{tikzlings/mouse/belly}
 \UseHook{tikzlings/belly}
 \csname mousehookbelly\endcsname
 \csname tikzlinghookbelly\endcsname
 %
 % Tail if back %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \ifmouse@back
   \mouse@part@draw[\mouse@body!65!white] (1.0825, 1.6326) .. controls (1.3527, 1.7527) and (1.6609, 1.3164) .. (1.5928, 1.3124) .. controls (0.9164, 2.186) and (0.8338, 0.6325) .. (0.3708, 0.4451) .. controls (0.2529, 0.3974) and (-0.0064, 0.3874) .. (-0.0064, 0.3874) .. controls (-0.0776, 0.3765) and (-0.0862, 0.5026) .. (-0.0092, 0.5034) .. controls (-0.0092, 0.5034) and (0.0363, 0.4591) .. (0.3516, 0.54360) .. controls (0.6710, 0.6988) and (0.7613, 1.4825) .. (1.0825, 1.6326) -- cycle;
 \fi% back
 %
 % Head %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \ifmouse@back
   \mouse@part@draw[\mouse@body!65!white] (0.5, 1.8) .. controls (0.5, 1.58) and (0.2, 1.35) .. (0, 1.35) .. controls (-0.2, 1.35) and (-0.5, 1.58) .. (-0.5, 1.8) .. controls (-0.34, 2.3) and (0.34, 2.3) .. (0.5, 1.8) -- cycle;
 \else% back
   \mouse@part@draw[\mouse@body!65!white] (0.5, 1.8) .. controls (0.5, 1.58) and (0.2, 1.25) .. (0, 1.16) .. controls (-0.2, 1.25) and (-0.5, 1.58) .. (-0.5, 1.8) .. controls (-0.34, 2.3) and (0.34, 2.3) .. (0.5, 1.8) -- cycle;
 \fi% back
 %
 % Show details only from the front %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \unless\ifmouse@back
   %
   % Arms %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \mouse@part@draw[\mouse@body!65!white,rotate around={-\mouse@rotatearms:(0.47,1.15)}] (0.47,0.93) ellipse[x radius=0.13, y radius=0.24];
   \mouse@part@draw[\mouse@body!65!white,rotate around={\mouse@rotatearms:(-0.47,1.15)}] (-0.47,0.93) ellipse[x radius=0.13, y radius=0.24];
   %
   % Wiskers %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \fill[\mouse@whiskers] (0.0788, 1.2046) .. controls (0.1658, 1.2199) and (0.2086, 1.1539) .. (0.2956, 1.1386) -- (0.2956, 1.1486) .. controls (0.2097, 1.1637) and (0.1648, 1.2197) .. (0.0788, 1.2046) -- cycle;
   \fill[\mouse@whiskers] (-0.0788, 1.2046) .. controls (-0.1658, 1.2199) and (-0.2087, 1.1539) .. (-0.2956, 1.1386) -- (-0.2956, 1.1486) .. controls (-0.2097, 1.1637) and (-0.1648, 1.2197) .. (-0.0788, 1.2046) -- cycle;
   \fill[\mouse@whiskers] (0.0752, 1.2181) .. controls (0.1583, 1.2483) and (0.2171, 1.2209) .. (0.3002, 1.1907) -- (0.3002, 1.2007) .. controls (0.2174, 1.2308) and (0.158, 1.2482) .. (0.0752, 1.2181) -- cycle;
   \fill[\mouse@whiskers] (-0.0752, 1.2181) .. controls (-0.1583, 1.2483) and (-0.2171, 1.2209) .. (-0.3002, 1.1907) -- (-0.3002, 1.2007) .. controls (-0.2174, 1.2308) and (-0.158, 1.2482) .. (-0.0752, 1.2181) -- cycle;
   \fill[\mouse@whiskers] (0.0671, 1.2343) .. controls (0.1414, 1.2825) and (0.2182, 1.3064) .. (0.2925, 1.2582) -- (0.2925, 1.2682) .. controls (0.2179, 1.3166) and (0.1417, 1.2827) .. (0.0671, 1.2343) -- cycle;
   \fill[\mouse@whiskers] (-0.0671, 1.2343) .. controls (-0.1414, 1.2825) and (-0.2182, 1.3064) .. (-0.2925, 1.2582) -- (-0.2925, 1.2682) .. controls (-0.2179, 1.3166) and (-0.1417, 1.2827) .. (-0.0671, 1.2343) -- cycle;
   %
   % Nose %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \mouse@part@draw[\mouse@body!50!black] (0, 1.248) circle[radius=0.09];
   %
   % Eyes %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \mouse@part@draw[\mouse@eyes] (0.23, 1.68) circle[radius=0.05];
   \mouse@part@draw[\mouse@eyes] (-0.23, 1.68) circle[radius=0.05];
   %
 \fi% back
 %
 % adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \UseHook{tikzlings/mouse/body}
 \UseHook{tikzlings/body}
 \csname mousehookbody\endcsname
 \csname tikzlinghookbody\endcsname
 %
}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Documentation
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\clearpage
%\section[Mouse]{Tokz, the mouse}
%
%\emph{The idea for the mouse came from an Italian \LaTeX{} user -- Tokz is a combination of the Italian word for mouse and \TikZ}
%
%\subsection{Package name}
%
%\begin{tcolorbox}[title={Package usage}]
%\begin{samcode}
%\usepackage{tikzlings-mice}
%\end{samcode}
%\end{tcolorbox}
%
%\subsection{Basic Usage}
%
%\begin{tcblisting}{title={Basic mouse}}
%\mouse
%\end{tcblisting}
%
%\subsection{Options}
%
%The basic mouse can be modified by changing its colour:
%\begin{tcblisting}{title={Body colour}}
%\mouse[body=blue]
%\end{tcblisting}
%
%In addition to the colour of the body, the colour of various body parts can be adjusted:
%\begin{tcblisting}{title={Eye colour}}
%\mouse[eyes=red]
%\end{tcblisting}
%\begin{tcblisting}{title={Whiskers colour}}
%\mouse[whiskers=red]
%\end{tcblisting}
%
%The rotation angle of its arms can be adjusted:
%\begin{tcblisting}{title={Rotating the arms}}
%\mouse[rotatearms=40]
%\end{tcblisting}
%
%And the mouse can lift its legs:
%\begin{tcblisting}{title={Walking}}
%\mouse[leftstep]
%\mouse[rightstep,xshift=2cm]
%\end{tcblisting}
%
%To view the mouse from behind:
%\begin{tcblisting}{title={Back view}}
%\mouse[back]
%\end{tcblisting}
%
%The key \saminline|3D| will make the mouse 3-dimensional:
%\begin{tcblisting}{title={3D view}}
%\mouse[3D]
%\end{tcblisting}
%
%And finally the \saminline|contour| key will only draw the outlines:
%\begin{tcblisting}{title={Contours}}
%\mouse[contour=black]
%\end{tcblisting}

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