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tikzlings-pandas.sty
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tikzlings-pandas.sty
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% !TeX root = ./examples/panda.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-pandas}[2022/06/17 version v1.0 Drawing pandas in TikZ]
\RequirePackage{tikz}
\RequirePackage{tikzlings-addons}
\newcommand*{\panda}[1][]{%
\begin{scope}%
\tikzset{/panda/.cd,#1}%
\panda@draw%
\end{scope}%
\thing[#1]%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname pandahookforeground\endcsname
\csname tikzlinghookforeground\endcsname
%
}
\newif\ifpanda@threeD
\newif\ifpanda@back
\newif\ifpanda@contour
\tikzset{
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Pass unknown keys on to tikz
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
/panda/.search also={/tikz,/pgf,/thing},
/panda/.cd,
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% body
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
body/.store in = \panda@body,
body = white!90!black,
eye/.store in = \panda@eye,
eye = white,
pupil/.store in = \panda@pupil,
pupil = black,
mouth/.store in = \panda@mouth,
mouth = black,
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% options
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3D/.code = \panda@threeDtrue,
back/.code = \panda@backtrue,
contour/.code = \panda@contourtrue
\def\panda@contour{#1}
\def\panda@mouth{#1},
contour/.default = black,
outline/.forward to = /panda/contour,
}
\def\panda@draw{%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% minimal bounding box size
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\path (-0.62,0.05) rectangle (0.62, 2.18);
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% 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
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifpanda@threeD
\def\panda@part@draw[##1]{\shade[ball color=##1]}
\else% 3D
\ifpanda@contour
\def\panda@part@draw[##1]{\draw[##1,\panda@contour,fill=white,line width=\scalingfactor*0.4pt]}
\else% contour
\def\panda@part@draw[##1]{\fill[##1]}
\fi% contour
\fi% 3D
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Body parts
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname pandahookbackground\endcsname
\csname tikzlinghookbackground\endcsname
%
% Feet if back %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifpanda@back
\panda@part@draw[black] (0.32, 0.27) circle[radius=0.2];
\panda@part@draw[black] (-0.32, 0.27) circle[radius=0.2];
\fi% back
%
% Body %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\panda@part@draw[\panda@body!55!white] (0,0.78) ellipse[x radius=0.57, y radius=0.65];
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname pandahookbelly\endcsname
\csname tikzlinghookbelly\endcsname
%
% Arms %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\unless\ifpanda@back
\begin{scope}[yshift=-0.08cm]
\panda@part@draw[black] (0.28,0.93) ellipse[x radius=0.24, y radius=0.13, rotate=70];
\panda@part@draw[black] (-0.28,0.93) ellipse[x radius=0.24, y radius=0.13, rotate=-70];
\end{scope}
\fi% back
%
% Feet %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\unless\ifpanda@back
\panda@part@draw[black] (0.32, 0.27) circle[radius=0.2];
\panda@part@draw[black] (-0.32, 0.27) circle[radius=0.2];
\fi% back
%
% Ears %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\panda@part@draw[black] (0.32, 2) circle[radius=0.15];
\panda@part@draw[black] (-0.32, 2) circle[radius=0.15];
%
% Head %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\panda@part@draw[\panda@body!55!white] (0.4897, 1.5886) .. controls (0.4614, 1.8238) and (0.25, 2.1172) .. (0, 2.1134) .. controls (-0.25, 2.1172) and (-0.4614, 1.8238) .. (-0.4897, 1.5886) .. controls (-0.5261, 1.3269) and (-0.2748, 1.2377) .. (0, 1.2377) .. controls (0.2748, 1.2377) and (0.5261, 1.3269) .. (0.4897, 1.5886) -- cycle;
%
% Show details only from the front %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\unless\ifpanda@back
%
% Eyes %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\panda@part@draw[black] (0.3732, 1.6905) .. controls (0.3498, 1.767) and (0.2032, 1.8059) .. (0.0944, 1.7715) .. controls (-0.0145, 1.7371) and (0.173, 1.5479) .. (0.2508, 1.5443) .. controls (0.3286, 1.5407) and (0.3965, 1.614) .. (0.3732, 1.6905) -- cycle;
\panda@part@draw[black] (-0.3732, 1.6905) .. controls (-0.3498, 1.767) and (-0.2032, 1.8059) .. (-0.0944, 1.7715) .. controls (0.0145, 1.7371) and (-0.173, 1.5479) .. (-0.2508, 1.5443) .. controls (-0.3286, 1.5407) and (-0.3965, 1.614) .. (-0.3732, 1.6905) -- cycle;
\panda@part@draw[\panda@eye] (-0.18, 1.7) circle[radius=0.05];
\panda@part@draw[\panda@eye] (0.18, 1.7) circle[radius=0.05];
\panda@part@draw[\panda@pupil] (0.17, 1.695) circle[radius=0.02];
\panda@part@draw[\panda@pupil] (-0.17, 1.695) circle[radius=0.02];
%
% Mouth %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\draw[\panda@mouth,line width=\scalingfactor*0.2pt] (-0.16, 1.477) .. controls (-0.16, 1.477) and (-0.062, 1.37) .. (0, 1.506) .. controls (0.062, 1.37) and (0.16, 1.477) .. (0.16, 1.477);
%
% Nose %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\panda@part@draw[black] (0,1.55) ellipse[x radius=0.07, y radius=0.04];
%
\fi% back
%
% adding hook for users to customise %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\csname pandahookbody\endcsname
\csname tikzlinghookbody\endcsname
%
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Documentation
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\clearpage
%\section[Panda]{Meng Meng, the panda}
%
%\emph{Meng Meng is named after one of the pandas at the zoological garden Berlin}
%
%\subsection{Package name}
%
%\begin{tcolorbox}
%\begin{samcode}
%\usepackage{tikzlings-pandas}
%\end{samcode}
%\end{tcolorbox}
%
%\subsection{Basic Usage}
%
%\begin{tcblisting}{}
%\panda
%\end{tcblisting}
%
%\subsection{Options}
%
%The basic panda can be modified by changing its colour:
%\begin{tcblisting}{}
%\panda[body=blue]
%\end{tcblisting}
%
%In addition to the colour of the body, the colour of various body parts can be adjusted:
%\begin{tcblisting}{}
%\panda[eye=red]
%\end{tcblisting}
%\begin{tcblisting}{}
%\panda[pupil=red]
%\end{tcblisting}
%\begin{tcblisting}{}
%\panda[mouth=red]
%\end{tcblisting}
%
%To view the panda from behind:
%\begin{tcblisting}{}
%\panda[back]
%\end{tcblisting}
%
%The key \saminline|3D| will make the panda 3-dimensional:
%\begin{tcblisting}{}
%\panda[3D]
%\end{tcblisting}
%
%And finally the \saminline|contour| key will only draw the outlines:
%\begin{tcblisting}{}
%\panda[contour=black]
%\end{tcblisting}