plickers4.tex

%%%%%%%%%%%%%%%%%%%%
% The Plickers cards available at
% https://assets.plickers.com/plickers-cards/PlickersCards_2up_LargeAnswers_1-40.pdf
% are here enlarged and tabbed for use in larger classrooms
%
% DIRECTIONS.
% Typeset twice to get positioning correct.
% Print single-sided on card stock,
% ==> change the color of the paper every 13 pages
% then cut out negative space around tabs.
% Tabs make it easy for students to find their
% Plickers card at beginning of each class
%%%%%%%%%%%%%%%%%%%%

\RequirePackage{luatex85}
\documentclass{article}
\usepackage[margin=0in]{geometry}
\usepackage{pdfpages, tikz, mathtools}
\setlength\parindent{0mm}

\usepackage{expl3}
\ExplSyntaxOn
\cs_new_eq:NN \Repeat \prg_replicate:nn
\ExplSyntaxOff

\begin{document}
\sf\bfseries
\newcounter{index}

\Repeat{63}{
\newpage
\stepcounter{index}
\pgfmathtruncatemacro\index{\arabic{index}}
\pgfmathtruncatemacro\position{mod(\index-1,13)}
\pgfmathtruncatemacro\page{floor((\index-1)/2)+1}
\pgfmathtruncatemacro\ones{mod(\index,10)}
\pgfmathtruncatemacro\tens{floor(\index/10)}
\def\zero{0}
\pgfmathtruncatemacro\odd{mod(\index,2)}
\ifnum\odd=1
	\pgfmathtruncatemacro\bottom{160}
	\pgfmathtruncatemacro\top{20}
	\else
	\pgfmathtruncatemacro\bottom{20}
	\pgfmathtruncatemacro\top{160}
	\fi

\begin{tikzpicture}
	[scale=2.54, overlay, remember picture]
	\foreach \angle in {0, 180}{
		\draw[rotate=\angle]
			(current page.center)
			++({-8.5/2 + 1.65 + 0.4*(0.5+\position)},
				11/2 - 0.6)
			node[rotate=\angle, align=center,
				text width=0.5/3.5, scale=3.5]
			{\ifx\tens\zero\else\clap\tens\fi
				\\[-1ex]\clap\ones}
			++(0.4/2, 0.6)
			coordinate 
			(corner);
		\ifnum\position=12 % don't cut 13th, 26th, etc card
			\else
			\ifnum\index=63 % don't cut last (63rd) card
				\else
				\draw[rotate=\angle, dashed]
					(current page.center)
					++(8.5/2 - 1.65, 11/2 - 1.25)
					rectangle
					(corner);
				\fi
			\fi
		}
	\end{tikzpicture}

\begin{minipage}{11in}
	\centering
	\ifnum\index>40 %switch to extended card deck
		\includepdf[pages=\page, height=8in, clip,
			trim=58mm \bottom mm 58mm \top mm]
		{plickers63.pdf}
		\else
		\includepdf[pages=\page, height=8in, clip,
			trim=58mm \bottom mm 58mm \top mm]
		{plickers40.pdf}
		\fi
	\end{minipage}
}
\end{document}