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% !TeX root = jigsaw-doc.tex
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% The jigsaw package
% A package to draw jigsaw pieces with tikz
% Maintained by samcarter
%
% Project repository and bug tracker:
% https://github.com/samcarter/jigsaw
%
% Released under the LaTeX Project Public License v1.3c or later
% See http://www.latex-project.org/lppl.txt
%
% Version 0.1a
% NOv 9, 2018
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ProvidesPackage{jigsaw}
[2018/11/09 v0.1a Draw jigsaw pieces in TikZ]
\RequirePackage{tikz}
\RequirePackage{ifluatex}
\RequirePackage{ifxetex}
\ifluatex
\let\pdfrandomseed\randomseed
\fi
\ifxetex
\pgfmathsetseed{\time}
\else
\pgfmathsetseed{\number\pdfrandomseed}
\fi
\pgfmathparse{int(random(1,120))}
\newcommand{\side}[1]{
(0.0,#1*0.00) .. controls (0.0,#1*0.00) and (0.4,#1*-0.04) ..
(0.4,#1*0.04) .. controls (0.4,#1*0.11) and (0.2,#1*0.26) ..
(0.5,#1*0.26) .. controls (0.8,#1*0.26) and (0.6,#1*0.11) ..
(0.6,#1*0.04) .. controls (0.6,#1*-0.04) and (1.0,#1*0.00) ..
(1.0,#1*0.00)
}
\newcommand{\halfpiece}[2]{
\draw \side{#1} [rotate around={90:(0.5,0.5)}] \side{#2};
}
\newcommand{\piece}[5][\@nil]{
\def\tmp{#1}%
\ifx\tmp\@nnil
\else
\fill[#1]
\side{#2} -- (0.5,0.5)
[rotate around={90:(0.5,0.5)}] \side{#3} -- (0.5,0.5)
[rotate around={180:(0.5,0.5)}] \side{#5} -- (0.5,0.5)
[rotate around={270:(0.5,0.5)}] \side{#4} -- (0.5,0.5)
-- cycle;
\fi
\draw
\side{#2}
[rotate around={90:(0.5,0.5)}] \side{#3}
[rotate around={180:(0.5,0.5)}] \side{#5}
[rotate around={270:(0.5,0.5)}] \side{#4};
}
\newcommand{\tile}[5][\@nil]{%
\begin{tikzpicture}
\path (0,0) rectangle (1,0.97);
\begin{pgfinterruptboundingbox}
\piece[#1]{#2}{#3}{#4}{#5}
\end{pgfinterruptboundingbox}
\end{tikzpicture}%
}
\pgfmathdeclarerandomlist{inout}{{-1}{1}}
\newcommand{\jigsaw}[2]{%
\def\xmax{#1}
\def\ymax{#2}
\foreach \x in {1,...,\xmax}{
\foreach \y in {1,...,\ymax}{
\ifnum\y=1
\def\bottom{0}
\else
\pgfmathrandomitem{\bottom}{inout}%
\fi
\ifnum\x=\xmax
\def\right{0}
\else
\pgfmathrandomitem{\right}{inout}%
\fi
\begin{scope}[xshift=\x cm-1cm, yshift=\y cm-1cm]
\halfpiece{\bottom}{\right}
\end{scope}
}
}
\draw (0,0) -- (0,\ymax) -- (\xmax,\ymax);
}
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