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File:Blue 7 2 Knot.png

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這個文件來自維基共享資源
维基百科，自由的百科全书

原始文件 （1,600 × 1,760像素，文件大小：505 KB，MIME类型：image/png）

 
本图片使用POV-Ray创作.

摘要

描述
English: A five-twist (72) knot.
日期
来源 自己的作品
作者 Jim.belk

许可协议

Public domain 我，本作品著作权人，释出本作品至公有领域。这适用于全世界。
在一些国家这可能不合法；如果是这样的话，那么：
我无条件地授予任何人以任何目的使用本作品的权利，除非这些条件是法律规定所必需的。

Source

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 cropped and 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_tube = 0.07;  // thickness (radius) of tube

sphere_sweep
  {
  cubic_spline 89,
  <-0.738272,-0.137241,-0.116252>, r_tube
  <-0.771226,-0.252727,-0.0690456>, r_tube
  <-0.77771,-0.366515,-0.00940232>, r_tube
  <-0.755546,-0.475284,0.0552339>, r_tube
  <-0.703814,-0.574599,0.118119>, r_tube
  <-0.623356,-0.658636,0.172757>, r_tube
  <-0.517725,-0.720368,0.212752>, r_tube
  <-0.394263,-0.752361,0.232167>, r_tube
  <-0.265029,-0.748211,0.226395>, r_tube
  <-0.146703,-0.704844,0.193727>, r_tube
  <-0.0581259,-0.625177,0.136989>, r_tube
  <-0.0147325,-0.519015,0.0648827>, r_tube
  <-0.0228379,-0.398989,-0.00464281>, r_tube
  <-0.0753355,-0.276642,-0.0439511>, r_tube
  <-0.154445,-0.166394,-0.0327461>, r_tube
  <-0.243216,-0.0824995,0.0250816>, r_tube
  <-0.335515,-0.0238808,0.106357>, r_tube
  <-0.435166,0.0288372,0.182224>, r_tube
  <-0.542016,0.095717,0.228639>, r_tube
  <-0.642952,0.182997,0.23192>, r_tube
  <-0.718106,0.284775,0.19055>, r_tube
  <-0.749853,0.388915,0.114203>, r_tube
  <-0.728221,0.481278,0.0209964>, r_tube
  <-0.653625,0.549351,-0.0659591>, r_tube
  <-0.537853,0.585897,-0.122594>, r_tube
  <-0.402732,0.593276,-0.129428>, r_tube
  <-0.273576,0.587648,-0.0793947>, r_tube
  <-0.165144,0.597439,0.0128131>, r_tube
  <-0.0695384,0.644295,0.109002>, r_tube
  <0.0330574,0.719423,0.167919>, r_tube
  <0.15023,0.789973,0.170137>, r_tube
  <0.271358,0.824211,0.121141>, r_tube
  <0.378013,0.804887,0.0417334>, r_tube
  <0.453686,0.7309,-0.0407349>, r_tube
  <0.489596,0.615077,-0.0987829>, r_tube
  <0.488766,0.480137,-0.110572>, r_tube
  <0.468924,0.350877,-0.0669706>, r_tube
  <0.45877,0.240552,0.0203739>, r_tube
  <0.478728,0.141095,0.118936>, r_tube
  <0.52303,0.0347509,0.194051>, r_tube
  <0.570067,-0.0853008,0.227952>, r_tube
  <0.602009,-0.21198,0.219587>, r_tube
  <0.609933,-0.334119,0.176751>, r_tube
  <0.591479,-0.443186,0.110351>, r_tube
  <0.547813,-0.534603,0.0310731>, r_tube
  <0.481374,-0.606709,-0.0519399>, r_tube
  <0.394756,-0.65922,-0.130945>, r_tube
  <0.290617,-0.691979,-0.19885>, r_tube
  <0.172394,-0.704416,-0.24839>, r_tube
  <0.0457538,-0.69574,-0.271942>, r_tube
  <-0.0799134,-0.665782,-0.262449>, r_tube
  <-0.191017,-0.61641,-0.215554>, r_tube
  <-0.271592,-0.552941,-0.132515>, r_tube
  <-0.308397,-0.483869,-0.0220469>, r_tube
  <-0.294624,-0.416756,0.098757>, r_tube
  <-0.229936,-0.351835,0.202922>, r_tube
  <-0.126056,-0.286213,0.261528>, r_tube
  <-0.00693826,-0.224507,0.259725>, r_tube
  <0.104256,-0.176108,0.202779>, r_tube
  <0.198655,-0.144607,0.110623>, r_tube
  <0.28779,-0.122547,0.00897438>, r_tube
  <0.389646,-0.0958184,-0.0773975>, r_tube
  <0.506948,-0.0525547,-0.12865>, r_tube
  <0.624225,0.0127559,-0.133863>, r_tube
  <0.718547,0.0986739,-0.0935825>, r_tube
  <0.769215,0.197185,-0.0190641>, r_tube
  <0.76373,0.295968,0.07055>, r_tube
  <0.700935,0.381743,0.151708>, r_tube
  <0.592425,0.444187,0.200665>, r_tube
  <0.461506,0.480837,0.199122>, r_tube
  <0.336902,0.502534,0.141567>, r_tube
  <0.238495,0.534502,0.0434842>, r_tube
  <0.162369,0.600629,-0.0580741>, r_tube
  <0.0868258,0.699062,-0.12306>, r_tube
  <-0.00376094,0.801619,-0.130894>, r_tube
  <-0.107952,0.874685,-0.0845692>, r_tube
  <-0.213258,0.8948,-0.00303469>, r_tube
  <-0.304403,0.853766,0.0868388>, r_tube
  <-0.369298,0.758796,0.156714>, r_tube
  <-0.403938,0.630457,0.182717>, r_tube
  <-0.417153,0.496789,0.15272>, r_tube
  <-0.431509,0.380148,0.0749723>, r_tube
  <-0.469611,0.282234,-0.0200497>, r_tube
  <-0.534325,0.188184,-0.0973564>, r_tube
  <-0.610828,0.0866908,-0.138519>, r_tube
  <-0.682597,-0.02296,-0.142462>, r_tube
  <-0.738272,-0.137241,-0.116252>, r_tube
  <-0.771226,-0.252727,-0.0690456>, r_tube
  <-0.77771,-0.366515,-0.00940232>, 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
    }
  }

说明

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描繪內容

核對和

8109810523d33cf88a77a65d16d741f1b2206a9f

确定方法：​SHA-1

資料大小

517,228 字节

高度

1,760 像素

寬度

1,600 像素

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当前2015年7月5日 (日) 17:582015年7月5日 (日) 17:58版本的缩略图1,600 × 1,760（505 KB）CmdrjamesonCompressed with pngout. Reduced by 246kB (32% decrease).
2010年3月25日 (四) 22:542010年3月25日 (四) 22:54版本的缩略图1,600 × 1,760（751 KB）Jim.belk{{Information |Description={{en|1=A five-twist (7<sub>2</sub>) knot.}} |Source={{own}} |Author=Jim.belk |Date=2010-03-25 |Permission= |other_versions= }} Category:Knots (knot theory) [[Category:Images including source code in their

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