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File:Heraldic gurges (whirlpool) Gorges.svg

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Original file (SVG file, nominally 600 × 780 pixels, file size: 16 KB)

Summary

Description
English: A heraldic whirlpool or gurges shown on a shield. This is a version of one coat of arms of the Gorges family of England. Sir Maurice Russell (2 February 1356 – 27 June 1416), a High Sheriff of Gloucestershire, was descended from this family.
Date 18 September 2011 (original upload date).
Source Own work; vector equivalent of the former image GorgesArmsMediaevalShield.jpg.
Author AnonMoos.
SVG development
InfoField
 
The SVG code is valid.
 
This vector image was created with PostScript.

Technical details

The Archimedean spiral was generated from the following vector PostScript source code:

%!
300 396 translate -.42 .42 scale/pi 3.1415926535898 def/R 180 pi
div def/W 15 def/U 7.01 def/D 180 def/C 54 pi div def/L{/Y 0 def
0 W U 360 mul{7{dup}repeat D add cos/H exch def D add sin/G exch
def H mul R div/Q exch def G mul R div/E exch def Q C mul/x exch
def E C mul/y exch def/S G Q add H E sub div def G 0 gt G 0 eq H
-1 eq and or{/F -1 def}{/F 1 def}ifelse/A exch def A 49.294 lt A
180 gt A 196.274 lt and or{/F F neg def}if W sub dup dup dup D
add cos C mul mul R div/M exch def D add sin C mul mul R div/N
exch def W add dup dup dup D add cos C mul mul R div/O exch def D
add sin C mul mul R div/V exch def/P x M sub dup mul y N sub dup
mul add sqrt pi div def/Z x O sub dup mul y V sub dup mul add
sqrt pi div def/B S S mul 1 add sqrt def 0 eq{0 0 moveto/X D cos
Z mul def}{X Y x 1 F mul B div P mul sub y S F mul B div P mul
sub x y curveto /X x 1 F mul B div Z mul add def/Y y S F mul B
div Z mul add def}ifelse}for stroke}def L/U 6.51 def/D 0 def L
showpage
%EOF

Licensing

Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
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18 September 2011

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Date/TimeThumbnailDimensionsUserComment
current10:10, 18 September 2011Thumbnail for version as of 10:10, 18 September 2011600 × 780 (16 KB)AnonMoosA heraldic whirlpool or ''gurges'' shown on a shield. This is a version of one coat of arms of the Gorges family of England. Self-made image which is a vector equivalent of en:File:GorgesArmsMediaevalShield.jpg . The Archimedean spiral was generat

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