% !TeX root = ./examples/sheep.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 http://www.latex-project.org/lppl.txt
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ProvidesPackage{tikzlings-sheep}[2020/12/04 version v0.4 Drawing sheep in TikZ]

\RequirePackage{tikz}
\RequirePackage{tikzlings-addons}
\usetikzlibrary{decorations.pathmorphing}
\usetikzlibrary{fadings}

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

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

\newif\ifsheep@threeD
\newif\ifsheep@monocle
\newif\ifsheep@blush
\newif\ifsheep@back

\tikzset{
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  % Pass unknown keys on to tikz
  %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  /sheep/.search also={/tikz,/pgf,/thing},
  /sheep/.cd,
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  % body
  %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  body/.code         = \def\sheep@body{#1},
  body               = brown!50!darkgray!97!yellow,
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  % options
  %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  blush/.code        = \sheep@blushtrue,
  monocle/.code      = \sheep@monocletrue,
  3D/.code           = \sheep@threeDtrue, 
  back/.code         = \sheep@backtrue,  
}

\def\sheep@draw{%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% minimal bounding box size 
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\path (-0.7,0.08) rectangle (0.7,2.33);
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% 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 and 3D, from
% https://chat.stackexchange.com/transcript/message/45991801#45991801
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifsheep@threeD
  \def\sheep@part@draw[##1]{\shade[ball color=##1]}
\else
  \def\sheep@part@draw[##1]{\fill[##1]}
\fi
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Body parts (center: x=0)
% 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname sheephookbackground\endcsname
\csname tikzlinghookbackground\endcsname
% 
% Ears %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\sheep@part@draw[\sheep@body] (0.22, 2.0392) .. controls   (0.22, 2.1584) and   (0.49460, 2.255) ..   (0.49460, 2.255) .. controls   (0.49460, 2.255) and (0.5300, 1.86) .. (0.3721, 1.86) .. controls (0.2891, 1.86) and   (0.22, 1.9201) .. (0.22, 2.0392) -- cycle;
\sheep@part@draw[\sheep@body!55!white] (0.22, 2.0392) .. controls (0.26, 2.1584) and (0.47, 2.22) .. (0.47, 2.20) .. controls (0.47, 2.2) and (0.49, 1.9) .. (0.3721, 1.9) .. controls (0.2891, 1.88) and (0.22, 1.88) .. (0.22, 2.0392) -- cycle;  
\sheep@part@draw[\sheep@body] (-0.22, 2.0392) .. controls   (-0.22, 2.1584) and   (-0.49460, 2.255) ..   (-0.49460, 2.255) .. controls   (-0.49460, 2.255) and (-0.5300, 1.86) .. (-0.3721, 1.86) .. controls (-0.2891, 1.86) and   (-0.22, 1.9201) .. (-0.22, 2.0392) -- cycle;
\sheep@part@draw[\sheep@body!55!white] (-0.22, 2.0392) .. controls (-0.26, 2.1584) and (-0.47, 2.22) .. (-0.47, 2.20) .. controls (-0.47, 2.2) and (-0.49, 1.9) .. (-0.3721, 1.9) .. controls (-0.2891, 1.88) and (-0.22, 1.88) .. (-0.22, 2.0392) -- cycle;  
% 
% Feet if back %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifsheep@back
  \sheep@part@draw[\sheep@body] (0.3216,0.15) arc (-15:195:0.12) -- (0.16,0.15) to [bend left] (0.25,0.15) -- cycle;
  \sheep@part@draw[\sheep@body] (-0.3216,0.15) arc (195:-15:0.12) -- (-0.16,0.15) to[bend right] (-0.25,0.15) --cycle;
\fi
%
% Body %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\sheep@part@draw[\sheep@body!50!darkgray,decorate,decoration={bumps,amplitude=\scalingfactor*2.5pt,segment length=\scalingfactor*10pt}] (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 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname sheephookbelly\endcsname
\csname tikzlinghookbelly\endcsname
%
% Arms %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifsheep@back\else
  \sheep@part@draw[\sheep@body!45!white!95!orange] (-0.2402, 0.9823) .. controls (-0.2994, 1.0582) and (-0.3721, 1.0651) .. (-0.4024, 0.9978) .. controls (-0.4327, 0.9305) and (-0.4092, 0.8145) .. (-0.35, 0.7386) .. controls (-0.3311, 0.7145) and (-0.3101, 0.6964) .. (-0.289, 0.6862) .. controls (-0.2755, 0.7023) and (-0.2498, 0.7563) .. (-0.2498, 0.7563) .. controls (-0.2498, 0.7563) and (-0.1790, 0.731) .. (-0.1611, 0.746) .. controls (-0.1611, 0.746) and (-0.1809, 0.9064) .. (-0.2402, 0.9823) -- cycle;
  \sheep@part@draw[\sheep@body!45!white!95!orange] (0.2402, 0.9823) .. controls (0.2994, 1.0582) and (0.3721, 1.0651) .. (0.4024, 0.9978) .. controls (0.4327, 0.9305) and (0.4092, 0.8145) .. (0.35, 0.7386) .. controls (0.3311, 0.7145) and (0.3101, 0.6964) .. (0.289, 0.6862) .. controls (0.2755, 0.7023) and (0.2498, 0.7563) .. (0.2498, 0.7563) .. controls (0.2498, 0.7563) and (0.1790, 0.731) .. (0.1611, 0.746) .. controls (0.1611, 0.746) and (0.1809, 0.9064) .. (0.2402, 0.9823) -- cycle;
\fi
%
% Hair %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\sheep@part@draw[\sheep@body!50!darkgray,decorate,decoration={bumps}] (-0.275,1.98) -- (-0.2,2.2)  -- (-0.008,2.2) -- (0.2,2.2) -- (0.275,1.98) -- cycle;
%
% Tail  if back %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifsheep@back
  \filldraw[\sheep@body!45!white!95!orange,rounded corners=0.1pt] (0,0.7) -- (0.08, 0.3236) arc (0:-180:2pt) -- cycle;
\fi
%
% Show details only from the front %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifsheep@back\else
%
% Head %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifsheep@back
  \sheep@part@draw[\sheep@body!45!white!95!orange] (0.4, 1.8) .. controls (0.4, 1.5) and (0.2, 1.35) .. (0, 1.35) .. controls (-0.2, 1.35) and (-0.4, 1.5) .. (-0.4, 1.8) .. controls (-0.34, 2.3) and (0.34, 2.3) .. (0.4, 1.8) -- cycle;
\else
  \sheep@part@draw[\sheep@body!45!white!95!orange] (0.4, 1.8) .. controls (0.4, 1.5) and (0.2, 1.25) .. (0, 1.16) .. controls (-0.2, 1.25) and (-0.4, 1.5) .. (-0.4, 1.8) .. controls (-0.34, 2.3) and (0.34, 2.3) .. (0.4, 1.8) -- cycle;
\fi
%
% Ears %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\sheep@part@draw[\sheep@body] (0.22, 2.0392) .. controls   (0.22, 2.1584) and   (0.49460, 2.255) ..   (0.49460, 2.255) .. controls   (0.49460, 2.255) and (0.5300, 1.86) .. (0.3721, 1.86) .. controls (0.2891, 1.86) and   (0.22, 1.9201) .. (0.22, 2.0392) -- cycle;
\sheep@part@draw[\sheep@body!55!white] (0.22, 2.0392) .. controls (0.26, 2.1584) and (0.47, 2.22) .. (0.47, 2.20) .. controls (0.47, 2.2) and (0.49, 1.9) .. (0.3721, 1.9) .. controls (0.2891, 1.88) and (0.22, 1.88) .. (0.22, 2.0392) -- cycle;  
\sheep@part@draw[\sheep@body] (-0.22, 2.0392) .. controls   (-0.22, 2.1584) and   (-0.49460, 2.255) ..   (-0.49460, 2.255) .. controls   (-0.49460, 2.255) and (-0.5300, 1.86) .. (-0.3721, 1.86) .. controls (-0.2891, 1.86) and   (-0.22, 1.9201) .. (-0.22, 2.0392) -- cycle;
\sheep@part@draw[\sheep@body!55!white] (-0.22, 2.0392) .. controls (-0.26, 2.1584) and (-0.47, 2.22) .. (-0.47, 2.20) .. controls (-0.47, 2.2) and (-0.49, 1.9) .. (-0.3721, 1.9) .. controls (-0.2891, 1.88) and (-0.22, 1.88) .. (-0.22, 2.0392) -- cycle;  
% 
% Eyes %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifsheep@back\else
  \sheep@part@draw[\sheep@body!50!black] (0.2, 1.66) circle[radius=0.06];
  \sheep@part@draw[\sheep@body!50!black] (-0.2, 1.66) circle[radius=0.06];
\fi
%
% Nose %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\draw[\sheep@body!50!black,line width=\scalingfactor*0.8pt,line cap=round] (0.16,1.43) arc [start angle=-30, end angle=-90, radius=0.16] -- (0,1.164) -- (0,1.3485) arc [start angle=-90, end angle=-150, radius=0.16]; 
%
% Feet %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\sheep@part@draw[\sheep@body!45!white!95!orange] (0.3216,0.13) arc (-15:195:0.10) -- (0.16,0.13) to [bend left] (0.25,0.13) -- cycle;
\sheep@part@draw[\sheep@body!45!white!95!orange] (-0.3216,0.13) arc (195:-15:0.10) -- (-0.16,0.13) to[bend right] (-0.25,0.13) --cycle;
%
% Hair %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\sheep@part@draw[\sheep@body!50!darkgray,decorate,decoration={bumps,amplitude=\scalingfactor*2.5pt,segment length=\scalingfactor*10pt}] (-0.275,1.98) -- (-0.2,2.2)  -- (-0.008,2.2) -- (0.2,2.2) -- (0.275,1.98) -- cycle;
%
% Blush %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifsheep@blush
  \fill[red,path fading=sheep@blush] (-0.25, 1.5) circle[radius=0.1]; 
  \fill[red,path fading=sheep@blush] (0.25, 1.5) circle[radius=0.1];
\fi
%
% monocle %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifsheep@monocle
  \draw[black,line width=\scalingfactor*0.4pt] (0.2, 1.66) circle[radius=0.09];
  \draw[black,line width=\scalingfactor*0.4pt,rounded corners=\scalingfactor*0.01pt] (0.26,1.6) .. controls (0.3,1.54) .. (0.3,1.5) .. controls (0.28,1.45) .. (0.35,1.4);
\fi
%
\fi % end showing details only for front
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname sheephookbody\endcsname
\csname tikzlinghookbody\endcsname
%  
}
