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tikzlings-rhinos.sty
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% !TeX root = ./examples/rhino.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-rhinos}[2025/01/05 version v2.2 Drawing rhinos in TikZ]
\RequirePackage{tikz}
\RequirePackage{tikzlings-addons}
\newcommand*{\rhino}[1][]{%
\begin{scope}%
\tikzset{/rhino/.cd,#1}%
\rhino@draw%
\end{scope}%
\thing[#1]%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\UseHook{tikzlings/rhino/foreground}
\UseHook{tikzlings/foreground}
\csname rhinohookforeground\endcsname
\csname tikzlinghookforeground\endcsname
%
}
\newif\ifrhino@threeD
\newif\ifrhino@back
\newif\ifrhino@contour
\newif\ifrhino@openmouth
\NewHook{tikzlings/rhino/background}
\NewHook{tikzlings/rhino/belly}
\NewHook{tikzlings/rhino/body}
\NewHook{tikzlings/rhino/foreground}
\tikzset{
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Pass unknown keys on to tikz
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
/rhino/.search also={/tikz,/pgf,/thing},
/rhino/.cd,
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% body
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
body/.store in = \rhino@body,
body = gray!55!white,
toes/.store in = \rhino@toes,
toes = \rhino@body,
toe/.forward to = /rhino/toes,
eyes/.store in = \rhino@eyes,
eyes = white,
eye/.forward to = /rhino/eyes,
pupils/.store in = \rhino@pupils,
pupils = black,
pupil/.forward to = /rhino/eyes,
mouth/.store in = \rhino@mouth,
mouth = \rhino@body!50!black,
horn/.store in = \rhino@horn,
horn = white!95!yellow,
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% options
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
openmouth/.code = \rhino@openmouthtrue,
open mouth/.forward to = /rhino/openmouth,
3D/.code = \rhino@threeDtrue
\def\rhino@mouth{black},
back/.code = \rhino@backtrue,
contour/.code = \rhino@contourtrue
\def\rhino@contour{#1}
\def\rhino@mouth{#1},
contour/.default = black,
outline/.forward to = /rhino/contour,
}
\def\rhino@draw{%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% minimal bounding box size
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\path (-0.625,0.1) rectangle (0.625, 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
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifrhino@threeD
\def\rhino@part@draw[##1]{\shade[ball color=##1]}
\else% 3D
\ifrhino@contour
\def\rhino@part@draw[##1]{\draw[##1,\rhino@contour,fill=white,line width=\scalingfactor*0.4pt]}
\else% contour
\def\rhino@part@draw[##1]{\fill[##1]}
\fi% contour
\fi% 3D
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Body parts
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\UseHook{tikzlings/rhino/background}
\UseHook{tikzlings/background}
\csname rhinohookbackground\endcsname
\csname tikzlinghookbackground\endcsname
%
% Ears %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\rhino@part@draw[\rhino@body!70!black] (-0.1772, 2.0686) .. controls (-0.2057, 2.1602) and (-0.3552, 2.2076) .. (-0.3552, 2.1922) .. controls (-0.3552, 2.1922) and (-0.3694, 1.9615) .. (-0.2855, 1.9615) .. controls (-0.2264, 1.9462) and (-0.1772, 1.9462) .. (-0.1772, 2.0686) -- cycle;
\rhino@part@draw[\rhino@body!70!black] (0.1772, 2.0686) .. controls (0.2057, 2.1602) and (0.3552, 2.2076) .. (0.3552, 2.1922) .. controls (0.3552, 2.1922) and (0.3694, 1.9615) .. (0.2855, 1.9615) .. controls (0.2264, 1.9462) and (0.1772, 1.9462) .. (0.1772, 2.0686) -- cycle;
%
% Feet if back %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifrhino@back
\rhino@part@draw[\rhino@body!70!black] (-0.08,0.13) arc [start angle=0, end angle=180, x radius=0.17, y radius=0.19] -- cycle;
\rhino@part@draw[\rhino@body!70!black](0.08,0.13) arc [start angle=180, end angle=0, x radius=0.17, y radius=0.19] -- cycle;
\fi% back
%
% Nose if back %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifrhino@back
\rhino@part@draw[\rhino@body!83!black] (0, 1.55) ellipse[x radius=0.36, y radius=0.2];
\fi% back
%
% Body %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\rhino@part@draw[\rhino@body] ( 0.55, 0.8 ) .. controls ( 0.55 , 0.4) and ( 0.35, 0.19) .. ( 0.0, 0.19) .. controls (-0.35, 0.19) and (-0.55 , 0.4) .. (-0.55, 0.8 ) .. controls (-0.55 , 1.3) and (-0.35, 1.65) .. ( 0.0, 1.65) .. controls ( 0.35, 1.65) and ( 0.55 , 1.3) .. ( 0.55, 0.75) -- cycle;
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\UseHook{tikzlings/rhino/belly}
\UseHook{tikzlings/belly}
\csname rhinohookbelly\endcsname
\csname tikzlinghookbelly\endcsname
%
% Arms %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\unless\ifrhino@back
\rhino@part@draw[\rhino@body!70!black] (0.3,1.0) ellipse[x radius=0.24, y radius=0.13, rotate=90];
\rhino@part@draw[\rhino@body!70!black] (-0.3,1.0) ellipse[x radius=0.24, y radius=0.13, rotate=-90];
\fi% back
%
% Head %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\rhino@part@draw[\rhino@body] (0, 1.76) circle[radius=0.36];
%
% Show details only from the front %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\unless\ifrhino@back
%
% Eyes %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifrhino@contour
\rhino@part@draw[\rhino@eyes] (-0.11, 1.83) ellipse[x radius=0.08, y radius=0.12];
\rhino@part@draw[\rhino@eyes] (0.11, 1.83) ellipse[x radius=0.08, y radius=0.12];
\rhino@part@draw[\rhino@pupils] (-0.105, 1.78) ellipse[x radius=0.04, y radius=0.07];
\rhino@part@draw[\rhino@pupils] (0.105, 1.78) ellipse[x radius=0.04, y radius=0.07];
\else% contour
\fill[\rhino@eyes] (-0.11, 1.83) ellipse[x radius=0.08, y radius=0.12];
\fill[\rhino@eyes] (0.11, 1.83) ellipse[x radius=0.08, y radius=0.12];
\fill[\rhino@pupils] (-0.105, 1.78) ellipse[x radius=0.04, y radius=0.07];
\fill[\rhino@pupils] (0.105, 1.78) ellipse[x radius=0.04, y radius=0.07];
\fi% contour
%
% Nose %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\rhino@part@draw[\rhino@body!83!black] (0, 1.55) ellipse[x radius=0.36, y radius=0.2];
%
% Horn %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\rhino@part@draw[\rhino@horn] (0, 1.7911) .. controls (-0.0231, 1.7372) and (-0.0463, 1.6832) .. (-0.0642, 1.6274) .. controls (-0.0687, 1.6132) and (-0.0724, 1.5981) .. (-0.0678, 1.5834) .. controls (-0.0603, 1.552) and (-0.0287, 1.5287) .. (0, 1.531) .. controls (0.0287, 1.5287) and (0.0603, 1.552) .. (0.0678, 1.5834) .. controls (0.0724, 1.5981) and (0.0687, 1.6132) .. (0.0642, 1.6274) .. controls (0.0463, 1.6832) and (0.0231, 1.7372) .. (0, 1.7911) -- cycle;
%
% Mouth %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifrhino@openmouth
\filldraw[\rhino@mouth,line width=\scalingfactor*0.4pt] (0.125, 1.5) arc [start angle=-50, end angle=-130, radius=0.2];
\else
\draw[\rhino@mouth,line width=\scalingfactor*0.4pt] (0.125, 1.5) arc [start angle=-50, end angle=-130, radius=0.2];
\fi
%
% Feet %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\rhino@part@draw[\rhino@body!70!black] (-0.08,0.13) arc [start angle=0, end angle=180, x radius=0.17, y radius=0.19] -- cycle;
\rhino@part@draw[\rhino@toes] (-0.08,0.13) arc [start angle=0, end angle=180, x radius=0.05, y radius=0.08] -- cycle;
\rhino@part@draw[\rhino@toes] (-0.2,0.13) arc [start angle=0, end angle=180, x radius=0.05, y radius=0.1] -- cycle;
\rhino@part@draw[\rhino@toes] (-0.32,0.13) arc [start angle=0, end angle=180, x radius=0.05, y radius=0.08] -- cycle;
\rhino@part@draw[\rhino@body!70!black](0.08,0.13) arc [start angle=180, end angle=0, x radius=0.17, y radius=0.19] -- cycle;
\rhino@part@draw[\rhino@toes] (0.08,0.13) arc [start angle=180, end angle=0, x radius=0.05, y radius=0.08] -- cycle;
\rhino@part@draw[\rhino@toes] (0.2,0.13) arc [start angle=180, end angle=0, x radius=0.05, y radius=0.1] -- cycle;
\rhino@part@draw[\rhino@toes] (0.32,0.13) arc [start angle=180, end angle=0, x radius=0.05, y radius=0.08] -- cycle;
%
\fi% back
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\UseHook{tikzlings/rhino/body}
\UseHook{tikzlings/body}
\csname rhinohookbody\endcsname
\csname tikzlinghookbody\endcsname
%
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Documentation
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\clearpage
%\section[Rhino]{D\"urer, the rhino}
%
%\emph{Named after Albrecht D\"urer who painted an amazing rhino merely based on stories}
%
%\subsection{Package name}
%
%\begin{tcolorbox}[title={Package usage}]
%\begin{samcode}
%\usepackage{tikzlings-rhinos}
%\end{samcode}
%\end{tcolorbox}
%
%\subsection{Basic Usage}
%
%\begin{tcblisting}{title={Basic rhino}}
%\rhino
%\end{tcblisting}
%
%\subsection{Options}
%
%The basic rhino can be modified by changing its colour:
%\begin{tcblisting}{title={Body colour}}
%\rhino[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}}
%\rhino[eyes=red]
%\end{tcblisting}
%\begin{tcblisting}{title={Pupil colour}}
%\rhino[pupils=red]
%\end{tcblisting}
%\begin{tcblisting}{title={Mouth colour}}
%\rhino[mouth=red]
%\end{tcblisting}
%\begin{tcblisting}{title={Horn colour}}
%\rhino[horn=red]
%\end{tcblisting}
%
% The rhino can open its mouth:
%\begin{tcblisting}{title={Open mouth}}
%\rhino[openmouth]
%\end{tcblisting}
%
%The hippo can also do its nails:
%\begin{tcblisting}{title={Toe colour}}
%\rhino[toes=red]
%\end{tcblisting}
%
%To view the rhino from behind:
%\begin{tcblisting}{title={Back view}}
%\rhino[back]
%\end{tcblisting}
%
%The key \saminline|3D| will make the rhino 3-dimensional:
%\begin{tcblisting}{title={3D view}}
%\rhino[3D]
%\end{tcblisting}
%
%And finally the \saminline|contour| key will only draw the outlines:
%\begin{tcblisting}{title={Contours}}
%\rhino[contour=black]
%\end{tcblisting}