Jump to content

File:Blue Square Knot.png

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file (1,800 × 1,300 pixels, file size: 441 KB, MIME type: image/png)

 
This image was created with POV-Ray.

Summary

Description
English: A square knot.
Date
Source Own work
Author Jim.belk
Other versions

Licensing

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

This image was created using POV-Ray for Windows, version 3.6. The image was rendered to an 1800 x 1300 rectangle, using 0.3 anti-aliasing.

#include "colors.inc"

background { color White }

global_settings { assumed_gamma 1.0}

camera
  {
  location <0, 0, -25>
  right <1,0,0> up <0,13/18,0>
  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_tube = 0.07;  // thickness (radius) of tube

sphere_sweep
  {
  cubic_spline 71,
  <-0.381811,0.463006,-0.123497>, r_tube
  <-0.478758,0.36928,-0.051525>, r_tube
  <-0.552347,0.262152,0.0429328>, r_tube
  <-0.621253,0.148386,0.136898>, r_tube
  <-0.692522,0.0220062,0.193317>, r_tube
  <-0.750052,-0.116355,0.189675>, r_tube
  <-0.774886,-0.248191,0.127645>, r_tube
  <-0.757884,-0.350889,0.0237938>, r_tube
  <-0.700242,-0.407758,-0.0985641>, r_tube
  <-0.610847,-0.410894,-0.214748>, r_tube
  <-0.503817,-0.361675,-0.302175>, r_tube
  <-0.396028,-0.270564,-0.343322>, r_tube
  <-0.303919,-0.155828,-0.328894>, r_tube
  <-0.239133,-0.0396016,-0.260466>, r_tube
  <-0.204539,0.0607906,-0.150539>, r_tube
  <-0.196692,0.14428,-0.0186328>, r_tube
  <-0.216352,0.225336,0.113639>, r_tube
  <-0.272194,0.313775,0.225253>, r_tube
  <-0.369014,0.401666,0.297844>, r_tube
  <-0.497419,0.471303,0.319711>, r_tube
  <-0.636694,0.506741,0.289238>, r_tube
  <-0.762736,0.499133,0.21472>, r_tube
  <-0.853805,0.447791,0.111994>, r_tube
  <-0.89408,0.359577,0.00192659>, r_tube
  <-0.876347,0.247836,-0.0920953>, r_tube
  <-0.804727,0.130541,-0.147502>, r_tube
  <-0.696277,0.0251563,-0.148387>, r_tube
  <-0.575452,-0.06265,-0.0955125>, r_tube
  <-0.456877,-0.14133,-0.0154265>, r_tube
  <-0.335348,-0.211741,0.0574875>, r_tube
  <-0.202022,-0.262703,0.10807>, r_tube
  <-0.0582469,-0.287242,0.136195>, r_tube
  <0.0895219,-0.283825,0.14303>, r_tube
  <0.234225,-0.252381,0.126956>, r_tube
  <0.369169,-0.195147,0.0842625>, r_tube
  <0.494114,-0.121136,0.0160594>, r_tube
  <0.617583,-0.0403047,-0.0554485>, r_tube
  <0.738731,0.0526625,-0.0924469>, r_tube
  <0.837028,0.165163,-0.074236>, r_tube
  <0.888483,0.286508,-0.00667971>, r_tube
  <0.880566,0.396561,0.0909141>, r_tube
  <0.81457,0.476802,0.194991>, r_tube
  <0.702858,0.514686,0.282755>, r_tube
  <0.565622,0.505405,0.335208>, r_tube
  <0.427612,0.452895,0.339609>, r_tube
  <0.313509,0.369913,0.292008>, r_tube
  <0.240511,0.275398,0.1989>, r_tube
  <0.21098,0.185652,0.0756985>, r_tube
  <0.215325,0.101009,-0.0572063>, r_tube
  <0.246192,0.00662187,-0.177145>, r_tube
  <0.304425,-0.105569,-0.261534>, r_tube
  <0.3897,-0.224003,-0.293245>, r_tube
  <0.49313,-0.326364,-0.266316>, r_tube
  <0.599245,-0.391403,-0.187411>, r_tube
  <0.690947,-0.405227,-0.0732515>, r_tube
  <0.753441,-0.363503,0.0531281>, r_tube
  <0.776855,-0.271844,0.165867>, r_tube
  <0.758686,-0.145366,0.23992>, r_tube
  <0.706261,-0.006625,0.256064>, r_tube
  <0.637298,0.122258,0.208252>, r_tube
  <0.570923,0.235573,0.113105>, r_tube
  <0.505406,0.341506,0.00770625>, r_tube
  <0.420286,0.438144,-0.0789328>, r_tube
  <0.306633,0.513772,-0.140006>, r_tube
  <0.172308,0.561683,-0.177497>, r_tube
  <0.0278437,0.580766,-0.194372>, r_tube
  <-0.118434,0.571147,-0.192094>, r_tube
  <-0.258427,0.531941,-0.169481>, r_tube
  <-0.381811,0.463006,-0.123497>, r_tube
  <-0.478758,0.36928,-0.051525>, r_tube
  <-0.552347,0.262152,0.0429328>, r_tube
  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
    }
  }

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

22 March 2010

image/png

9382a272fadbe84f684a58073164fc9ce46227c6

451,645 byte

1,300 pixel

1,800 pixel

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current18:17, 5 July 2015Thumbnail for version as of 18:17, 5 July 20151,800 × 1,300 (441 KB)CmdrjamesonCompressed with pngout. Reduced by 427kB (49% decrease).
04:21, 23 March 2010Thumbnail for version as of 04:21, 23 March 20101,800 × 1,300 (868 KB)Jim.belk{{Information |Description={{en|1=A square knot.}} |Source={{own}} |Author=Jim.belk |Date=2010-03-22 |Permission= |other_versions= }} Category:Knots (knot theory) Category:Images including source code in their description

The following 2 pages use this file:

Global file usage

The following other wikis use this file: