File:Triple-Spiral-Symbol-filled.svg
![File:Triple-Spiral-Symbol-filled.svg](https://upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Triple-Spiral-Symbol-filled.svg/641px-Triple-Spiral-Symbol-filled.svg.png?20111010163649)
Original file (SVG file, nominally 641 × 600 pixels, file size: 21 KB)
Captions
Captions
Summary
[edit]Version of the Triple Spiral symbol (see Image:Triple-Spiral-Symbol.svg) with the area enclosed between the spirals filled in (and mirror-reflected with respect to Image:Triple-Spiral-Symbol.svg). For a less elaborate triskelion symbol, see Image:Triskele-Symbol-spiral.svg or Image:Triskele-Symbol-spiral-five-thirds-turns.svg -- for a more elaborate version, see Image:Triple-Spiral-Symbol-4turns-filled.svg. For "wheeled" forms of the spiral triskelion/triple spiral symbol, see Image:Wheeled-Triskelion-basic.svg , Image:Roissy triskelion iron ring signet.png , Image:Triple-spiral-wheeled-simple.svg , or Image:Triskelion-spiral-threespoked-inspiral.svg . For a spiral triskelion with a hollow triangle in the center, see Image:Triskele-hollow-triangle.svg . For versions of a triple-spiral labyrinth, see Image:Triple-Spiral-labyrinth.svg and Image:Triple-Spiral-labyrinth-variant.svg .
SVG version of Image:Triple-Spiral-Symbol-filled.png .
Converted from the following PostScript code:
%! /archimdouble{ %%%%%%%%%%%%%%%% % PostScript program to display an Archimedean spiral by approximating % it with Bezier curves. Can display a double spiral (two spirals % rotated by 180 degrees with respect to each other). %%% Parameters: % centerx = horizontal coordinate of center of spiral % centery = vertical coordinate of center of spiral % rotf = degrees to rotate /sepwid 110 def % width separating successive turnings of spiral % (half this if double spiral is selected) % incrm = insert a curve point every these degrees /sweeps swp2 def % number of 360 degree turnings to show % double - 0 to display single spiral, else double %%% Procedures: /pi 3.1415926535898 def/radians 57.295779513082 def /sepwid sepwid pi div 2 div def gsave centerx centery translate rotf rotate /aspiral{/prevbezy 0 def/first 1 def lower incrm sweeps 360 mul{7{dup}repeat phase add cos/costh exch def phase add sin/sinth exch def costh mul radians div/thcosth exch def sinth mul radians div/thsinth exch def thcosth sepwid mul/x exch def thsinth sepwid mul/y exch def /slope sinth thcosth add costh thsinth sub div def sinth 0 gt sinth 0 eq costh -1 eq and or{/flag -1 def}{/flag 1 def}ifelse /A exch def A 49.29348 lt A 180 gt A 196.273450852 lt and A 360 gt A 368.8301 lt and A 540 gt A 545.9907 lt and A 720 gt A 724.5217 lt and A 900 gt A 903.6281968 lt and or or or or or{/flag flag neg def}if incrm sub 3{dup}repeat phase add cos sepwid mul mul radians div /prevx exch def phase add sin sepwid mul mul radians div /prevy exch def incrm add 3{dup}repeat phase add cos sepwid mul mul radians div /nextx exch def phase add sin sepwid mul mul radians div /nexty exch def /prevdist x prevx sub dup mul y prevy sub dup mul add sqrt pi div def /nextdist x nextx sub dup mul y nexty sub dup mul add sqrt pi div def /normaliz slope slope mul 1 add sqrt def 0 eq{0 0 moveto/prevbezx phase cos nextdist mul def/first 0 def }{first 1 eq{x y moveto/first 0 def}{prevbezx prevbezy x 1 flag mul normaliz div prevdist mul sub y slope flag mul normaliz div prevdist mul sub x y curveto}ifelse /prevbezx x 1 flag mul normaliz div nextdist mul add def /prevbezy y slope flag mul normaliz div nextdist mul add def} ifelse} for stroke}def /phase 0 def aspiral %%% If different sweeps parameter for second spiral, define here: /sweeps 2.67 def %%% double 0 ne{/phase 180 def aspiral}if grestore %%%%%%%%%%%%%%%% }def gsave 618.5 0 translate -.4875 dup neg scale %%% decrease to .47 to fit on A4-size page -2 rotate /lower 0 def/double 1 def/swp2 3 def/incrm 15 def /centerx 304 def/centery 550 def/rotf 0 def archimdouble /centerx 927.334 def/centery 550 def/rotf 120 def archimdouble /centerx 615.667 def/centery 1089.823 def/rotf 240 def archimdouble /lower 1103.4 def/double 0 def/swp2 1117 360 div def/incrm 13.5 def /centerx 304 def/centery 550 def/rotf 0 def archimdouble /centerx 927.334 def/centery 550 def/rotf 120 def archimdouble /centerx 615.667 def/centery 1089.823 def/rotf 240 def archimdouble grestore showpage %EOF
Licensing
[edit]Public domainPublic domainfalsefalse |
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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. |
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:36, 10 October 2011 | ![]() | 641 × 600 (21 KB) | AnonMoos (talk | contribs) | opaque only near symbol |
12:27, 18 December 2006 | ![]() | 641 × 600 (20 KB) | AnonMoos (talk | contribs) | adding white background | |
06:52, 7 July 2006 | ![]() | 641 × 600 (20 KB) | AnonMoos (talk | contribs) | == Summary == Version of the Triple Spiral symbol (see Image:Triple-Spiral-Symbol.svg) with the area enclosed between the spirals filled in (and mirror-reflected with respect to Image:Triple-Spiral-Symbol.svg). For a less elaborate triskelion s |
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Short title | Triple Spiral symbol -- three filled double Archimedean spirals (triskelion) |
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Width | 641 |
Height | 600 |