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| View Original: | Op-art-4-sided-spiral-tunnel.svg (768x768) | |||
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| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Op-art-4-sided-spiral-tunnel.svg An Op art looking spiraling four-sided tunnel generated by an extremely simple iterative mathematical transformation Draw a square then inside that square draw a smaller centered square in negative color rotated by 5° and with sides 92 30623 the length of the sides of the enclosing square Self-made SVG file corresponding to the following vector PostScript source code <pre> 306 396 translate 3 dup scale/col 0 def 42 -1000 -1000 moveto 2000 0 rlineto 0 2000 rlineto -2000 0 rlineto closepath fill 5 rotate 0 9230623 dup scale/col 1 col sub def col setgray repeat showpage EOF</pre> 2012 AnonMoos Geometry and art Logarithmic spirals Images with PostScript source code 4-fold rotational symmetry | ||||
