17jl/figs/cross_packing.fig/cross_packing_r.tikz.tex

\documentclass{standalone}

\usepackage{tikz}
\usepackage{shapes}

\begin{document}
\begin{tikzpicture}
  \foreach \k in {0,...,3}{
    \foreach \l in {0,...,3}{
      \cross{cyan}{(-\l,2*\l)++(2*\k,\k)}
    }
  }
\end{tikzpicture}
\end{document}