% !TeX root = ./examples/marmot.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-marmots}[2025/03/23 version v2.3 Drawing marmots in TikZ]

\RequirePackage{tikz}
\RequirePackage{tikzlings-addons}
\usetikzlibrary{shadows.blur}
\usetikzlibrary{fadings}

\tikzfading[name=marmot@blush,inner color=transparent!50,outer color=transparent!100]

\ExplSyntaxOn
\ifdefined\sys_rand_seed:
 \pgfmathsetseed {\sys_rand_seed:}
\else
 \ifdefined\pdfrandomseed % pdflatex
 \else
     \ifdefined\randomseed
       \let\pdfrandomseed\randomseed % post TL19 xelatex and lualatex
     \else
         \let\pdfrandomseed\time % pre TL19 xelatex
     \fi
 \fi
 \pgfmathsetseed{\number\pdfrandomseed}
\fi
\ExplSyntaxOff

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

\newif\ifmarmot@blush
\newif\ifmarmot@whiskers
\newif\ifmarmot@teeth
\newif\ifmarmot@threeD
\newif\ifmarmot@shadow
\newif\ifmarmot@askphil
\newif\ifmarmot@leftstep
\newif\ifmarmot@rightstep
\newif\ifmarmot@back
\newif\ifmarmot@contour
\newif\ifmarmot@openmouth

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

\tikzset{
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % Pass unknown keys on to tikz
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 /marmot/.search also={/tikz,/pgf,/thing},
 /marmot/.cd,
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % body
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 body/.store in     = \marmot@body,
 body               = brown,
 eyes/.store in     = \marmot@eyes,
 eyes               = \marmot@body!50!black,
 eye/.forward to    = /marmot/eyes,
 mouth/.store in    = \marmot@mouth,
 mouth              = \marmot@body!50!black,
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % options
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 blush/.code        = \marmot@blushtrue
                      \def\marmot@blushcolor{#1},
 blush/.default     = red,
 whiskers/.code     = \marmot@whiskerstrue
                      \def\marmot@whiskers{#1},
 whiskers/.default  = gray,
 whisker/.forward to = /marmot/whiskers,
 teeth/.code        = \marmot@teethtrue
                      \def\marmot@teeth{#1},
 teeth/.default     = white,
 tooth/.forward to  = /marmot/teeth,
 openmouth/.code    = \marmot@openmouthtrue,
 open mouth/.forward to = /marmot/openmouth,
 3D/.code           = \marmot@threeDtrue,
 shadow/.code       = \marmot@shadowtrue,
 askphil/.code      = \marmot@askphiltrue,
 ask phil/.forward to = /marmot/askphil,
 leftstep/.code     = \marmot@leftsteptrue,
 left step/.forward to = /marmot/leftstep,
 rightstep/.code    = \marmot@rightsteptrue,
 right step/.forward to = /marmot/rightstep,
 back/.code         = \marmot@backtrue,
 contour/.code      = \marmot@contourtrue
                      \def\marmot@contour{#1}
                      \def\marmot@blushcolor{#1}
                      \def\marmot@mouth{#1},
 contour/.default   = black,
 outline/.forward to = /marmot/contour,
}

\def\marmot@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
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \ifmarmot@threeD
   \def\marmot@part@draw[##1]{\shade[ball color=##1]}
 \else% 3D
   \ifmarmot@contour
     \def\marmot@part@draw[##1]{\draw[##1,\marmot@contour,fill=white,line width=\scalingfactor*0.4pt]}
   \else% contour
     \def\marmot@part@draw[##1]{\fill[##1]}
   \fi% contour
 \fi% 3D
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % shadow
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \UseHook{tikzlings/marmot/background}
 \UseHook{tikzlings/background}
 \csname marmothookbackground\endcsname
 \csname tikzlinghookbackground\endcsname
 %
 \ifmarmot@askphil
   \pgfmathparse{int(random(1,120))}
   \let\marmot@random=\pgfmathresult
   \ifnum\marmot@random>17
     \marmot@shadowtrue
   \fi
 \fi% askphil
 %
 \ifmarmot@shadow
   \fill[opacity=0,blur shadow,] (0.3,0.5) ellipse[x radius=0.28, y radius=0.8, rotate=-80];
 \fi% shadow
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % Body parts
 %
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % Feet %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \ifmarmot@leftstep
   \marmot@part@draw[\marmot@body!50!black] (-0.255,0.25) ellipse[x radius=0.23, y radius=0.09];
 \else% step
   \marmot@part@draw[\marmot@body!50!black] (-0.255,0.2) ellipse[x radius=0.23, y radius=0.09];
 \fi% step
 %
 \ifmarmot@rightstep
   \marmot@part@draw[\marmot@body!50!black] (0.255,0.25) ellipse[x radius=0.23, y radius=0.09];
 \else% step
   \marmot@part@draw[\marmot@body!50!black] (0.255,0.2) ellipse[x radius=0.23, y radius=0.09];
 \fi% step
 %
 % Ears %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \marmot@part@draw[\marmot@body!50!black] (0.255,2.03) ellipse[x radius=0.09, y radius=0.13];
 \marmot@part@draw[\marmot@body!50!black] (-0.255,2.03) ellipse[x radius=0.09, y radius=0.13];
 %
 % Tail %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \unless\ifmarmot@back
   \marmot@part@draw[\marmot@body!50!black] (0.8856, 0.6504) .. controls (0.8656, 0.3803) and (0.0267, 0.2202) .. (0.0167, 0.4203) .. controls (-0.0033, 0.5404) and (0.1104, 0.4397) .. (0.3951, 0.4803) .. controls (0.6557, 0.5175) and (0.8856, 0.7005) .. (0.8856, 0.6504);
 \fi% back
 %
 % Body %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \marmot@part@draw[\marmot@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;
 %
 % Tail if back %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \ifmarmot@back
   \marmot@part@draw[\marmot@body!50!black] (0.8856, 0.6504) .. controls (0.8656, 0.3803) and (0.0267, 0.2202) .. (0.0167, 0.4203) .. controls (-0.0033, 0.5404) and (0.1104, 0.4397) .. (0.3951, 0.4803) .. controls (0.6557, 0.5175) and (0.8856, 0.7005) .. (0.8856, 0.6504);
 \fi% back
 %
 % Belly %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \unless\ifmarmot@back
   \marmot@part@draw[\marmot@body!50!white] (0.425, 0.71) .. controls (0.425, 0.41) and (0.245, 0.37) .. (0, 0.37) .. controls (-0.245, 0.37) and (-0.425, 0.41) .. (-0.425, 0.71) .. controls (-0.425, 1.01) and (-0.225, 1.26) .. (0, 1.26) .. controls (0.225, 1.26) and (0.425, 1.01) .. (0.425, 0.71) -- cycle;
 \fi% back
 %
 % adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \UseHook{tikzlings/marmot/belly}
 \UseHook{tikzlings/belly}
 \csname marmothookbelly\endcsname
 \csname tikzlinghookbelly\endcsname
 %
 % Show details only from the front %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \unless\ifmarmot@back
   %
   % Arms %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \marmot@part@draw[\marmot@body!50!black] (0.385,0.93) ellipse[x radius=0.24, y radius=0.13, rotate=70];
   \marmot@part@draw[\marmot@body!50!black] (-0.385,0.93) ellipse[x radius=0.24, y radius=0.13, rotate=-70];
   %
   % Muzzle %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \marmot@part@draw[\marmot@body!50!white] (0,1.47) ellipse[x radius=0.23, y radius=0.13];
   %
   % Nose %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \marmot@part@draw[\marmot@body!50!black] (0,1.6) circle[radius=0.08];
   %
   % Eyes %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \marmot@part@draw[\marmot@eyes] (-0.155,1.77) circle[radius=0.05];
   \marmot@part@draw[\marmot@eyes] (0.155,1.77) circle[radius=0.05];
   %
   % Mouth %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \ifmarmot@openmouth
     \filldraw[\marmot@mouth, line width=\scalingfactor*0.4pt] (0.145,1.51) arc [start angle=-20, end angle=-160, radius=0.155] (-0.145,1.51) arc [start angle=-120, end angle=-60, radius=0.29];
   \else
     \draw[\marmot@mouth, line width=\scalingfactor*0.4pt] (0.145,1.51) arc [start angle=-20, end angle=-160, radius=0.16];
   \fi
   %
   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   %
   % optional
   %
   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   %
   % Blushed %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \ifmarmot@blush
     \fill[\marmot@blushcolor,path fading=marmot@blush] (-0.295,1.6) circle[radius=0.1];
     \fill[\marmot@blushcolor,path fading=marmot@blush] (0.295,1.6) circle[radius=0.1];
   \fi% blush
   %
   % Wiskers %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \ifmarmot@whiskers
     \fill[\marmot@whiskers] (0.0788, 1.6146) .. controls (0.1658, 1.6299) and (0.2086, 1.5639) .. (0.2956, 1.5486) -- (0.2956, 1.5586) .. controls (0.2097, 1.5737) and (0.1648, 1.6297) .. (0.0788, 1.6146) -- cycle;
     \fill[\marmot@whiskers] (-0.0788, 1.6146) .. controls (-0.1658, 1.6299) and (-0.2087, 1.5639) .. (-0.2956, 1.5486) -- (-0.2956, 1.5586) .. controls (-0.2097, 1.5737) and (-0.1648, 1.6297) .. (-0.0788, 1.6146) -- cycle;
     \fill[\marmot@whiskers] (0.0752, 1.6281) .. controls (0.1583, 1.6583) and (0.2171, 1.6309) .. (0.3002, 1.6007) -- (0.3002, 1.6107) .. controls (0.2174, 1.6408) and (0.158, 1.6582) .. (0.0752, 1.6281) -- cycle;
     \fill[\marmot@whiskers] (-0.0752, 1.6281) .. controls (-0.1583, 1.6583) and (-0.2171, 1.6309) .. (-0.3002, 1.6007) -- (-0.3002, 1.6107) .. controls (-0.2174, 1.6408) and (-0.158, 1.6582) .. (-0.0752, 1.6281) -- cycle;
     \fill[\marmot@whiskers] (0.0671, 1.6443) .. controls (0.1414, 1.6925) and (0.2182, 1.7164) .. (0.2925, 1.6682) -- (0.2925, 1.6782) .. controls (0.2179, 1.7266) and (0.1417, 1.6927) .. (0.0671, 1.6443) -- cycle;
     \fill[\marmot@whiskers] (-0.0671, 1.6443) .. controls (-0.1414, 1.6925) and (-0.2182, 1.7164) .. (-0.2925, 1.6682) -- (-0.2925, 1.6782) .. controls (-0.2179, 1.7266) and (-0.1417, 1.6927) .. (-0.0671, 1.6443) -- cycle;
   \fi% whiskers
   %
   % Teeth %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   \ifmarmot@teeth
     \fill[\marmot@body!50!black] (0.048,1.413) rectangle (-0.048,1.373);
     \fill[\marmot@teeth] (-0.045,1.407) rectangle (-0.004,1.376);
     \fill[\marmot@teeth] (0.045,1.407) rectangle (0.004,1.376);
   \fi% teeth
   %
 \fi% back
 %
 % adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \UseHook{tikzlings/marmot/body}
 \UseHook{tikzlings/body}
 \csname marmothookbody\endcsname
 \csname tikzlinghookbody\endcsname
 %
}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Documentation
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\clearpage
%\section[Marmot]{Phil, the marmot}
%
%\emph{Phil got his name from Punxsutawney Phil, the famous weather forecasting groundhog}
%
%\subsection{Package name}
%
%\begin{tcolorbox}[title={Package usage}]
%\begin{samcode}
%\usepackage{tikzlings-marmots}
%\end{samcode}
%\end{tcolorbox}
%
%\subsection{Basic Usage}
%
%\begin{tcblisting}{title={Basic marmot}}
%\marmot
%\end{tcblisting}
%
%\subsection{Options}
%
%The basic marmot can be modified by changing its colour:
%\begin{tcblisting}{title={Body colour}}
%\marmot[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}}
%\marmot[eyes=red]
%\end{tcblisting}
%\begin{tcblisting}{title={Mouth colour}}
%\marmot[mouth=red]
%\end{tcblisting}
%
% The marmot can open its mouth:
%\begin{tcblisting}{title={Open mouth}}
%\marmot[openmouth]
%\end{tcblisting}
%
%The marmot can also blush
%\begin{tcblisting}{title={Blushing marmot}}
%\marmot[blush=red]
%\end{tcblisting}
%
%and whiskers can be added:
%\begin{tcblisting}{title={Whiskers colour}}
%\marmot[whiskers=gray]
%\end{tcblisting}
%
%Some marmots even show their chisel teeth:
%\begin{tcblisting}{title={Teeth colour}}
%\marmot[teeth=white]
%\end{tcblisting}
%
%or can cast a shadow:
%\begin{tcblisting}{title={Shadow}}
%\marmot[shadow]
%\end{tcblisting}
%
%This ability is important if you want to ask Punxsutawney Phil\footnote{\url{https://en.wikipedia.org/wiki/Punxsutawney_Phil}} on Groundhog Day how the weather is going to be. With a probability derived from the statistics of 120 Groundhog Days\footnote{\hbadness=99999\url{https://www.livescience.com/32974-punxsutawney-phil-weather-prediction-accuracy.html}} the option \saminline|askphil| might or might not result in a shadow.
%\begin{tcblisting}{title={Ask Phil}}
%\marmot[askphil]
%\end{tcblisting}
%
%If a good weather prognosis is derived, the happy marmot can dance by lifting up its left and right foot:
%\begin{tcblisting}{title={Walking}}
%\marmot[leftstep]
%\marmot[rightstep,xshift=2cm]
%\end{tcblisting}
%
%To view the marmot from behind:
%\begin{tcblisting}{title={Back view}}
%\marmot[back]
%\end{tcblisting}
%
%The key \saminline|3D| will make the marmot 3-dimensional:
%\begin{tcblisting}{title={3D view}}
%\marmot[3D]
%\end{tcblisting}
%
%And finally the \saminline|contour| key will only draw the outlines:
%\begin{tcblisting}{title={Contours}}
%\marmot[contour=black]
%\end{tcblisting}

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