File:Op-art-4-sided-spiral-tunnel.svg

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Original file ‎(SVG file, nominally 768 × 768 pixels, file size: 738 bytes)

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Description 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.
Date
Source

Self-made SVG file, corresponding to the following vector PostScript source code: 

%!
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
Author AnonMoos
Permission
(Reusing this file)
Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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Date/TimeThumbnailDimensionsUserComment
current14:45, 31 March 2012Thumbnail for version as of 14:45, 31 March 2012768 × 768 (738 bytes)AnonMoos (talk | contribs)optimizing using Sarang tricks (File:Op-art-4-sided-spiral-tunnel-6.svg etc.)
07:51, 30 March 2012Thumbnail for version as of 07:51, 30 March 2012768 × 768 (4 KB)AnonMoos (talk | contribs)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% th...

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