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File:Blue Unknot.png

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Original file(1,800 × 1,800 pixels, file size: 417 KB, MIME type: image/png)
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This image was created with POV-Ray.

Summary[edit]

Description
English: The unknot.
Date
Source Own work
Author Jim.belk

Licensing[edit]

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.

Source[edit]

This image was created using POV-Ray for Windows, version 3.6. The image was rendered to an 1800 x 1800 square, using 0.3 anti-aliasing, and then compressed using pngcrush.

#include "colors.inc"

background { color White }

global_settings { assumed_gamma 1.0}

camera
  {
  location <0, 0, -25>
  right <1,0,0> up <0,1,0>
  look_at  <0, 0, 0>
  angle 5
  }

light_source
  {
  <0, 20, -50>
  color White
  area_light <5, 0, 0>, <0, 5, 0>, 10, 10  /* very slow, decrease 10 to 2 for experiments */
  adaptive 3
  }

#declare R = 0.8;
#declare r_tube = 0.12;

torus
  {
  R, r_tube              // major and minor radius
  rotate -90*x      // so we can see it from the top
  translate <0,0,0.1>
  pigment { color rgb <0,0.25,1> }
  finish
    {
    ambient 0.15
    diffuse 0.85
    brilliance 2
    phong 0.25
    phong_size 7.5
    }
  }

plane
  {
  <0,0,-1>, -0.33
  pigment { color White }
  finish
    {
    ambient 0.35
    diffuse 0.65
    }
  }

File history

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Date/TimeThumbnailDimensionsUserComment
current21:51, 28 March 2010Thumbnail for version as of 21:51, 28 March 20101,800 × 1,800 (417 KB)Jim.belk{{Information |Description={{en|1=The unknot.}} |Source={{own}} |Author=Jim.belk |Date=2010-03-28 |Permission= |other_versions= }} Category:Plain circles Category:Images including source code in their description
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