Don't stare at this one for too long

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Author

Andrew Kepert

Last Updated

10년 전

License

Creative Commons CC BY 4.0

Abstract

Submitted as an answer to the Showcase of Optical Illusions question on TeX SX.

Click the Illusions tag below to see more!

Tags

TikZ Optical Illusions

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% Source: http://tex.stackexchange.com/a/129306/23931
\documentclass{standalone}
\usepackage{tikz}
\begin{document}

\begin{tikzpicture}
  \fill[color=black!40!white] (-6,-6) rectangle (6,6);
  \foreach \n/\r/\twist in {70/5/12,56/4/-12,42/3/12,28/2/-12}{
    \foreach \m in {1,3,...,\n}
      \draw [thick,color=white,shift={(360/\n*\m:\r)},rotate=\twist+360/\n*\m]
        (-.15,-.15) rectangle (.15,.15);
    \foreach \m in {2,4,...,\n}
      \draw [thick,color=black,shift={(360/\n*\m:\r)},rotate=\twist+360/\n*\m]
        (-.15,-.15) rectangle (.15,.15);
    }
\end{tikzpicture}

\end{document}