File:Blue Square Knot Animated.gif
Blue_Square_Knot_Animated.gif (480 × 480 pixels, file size: 1.64 MB, MIME type: image/gif, looped, 36 frames, 3.6 s)
This is a file from the Wikimedia Commons. The description on its description page there is shown below. |
Summary
DescriptionBlue Square Knot Animated.gif |
English: A square knot. |
Date | // 2018-12-28 |
Source | Own work |
Author |
Jim.belk Animation: MichaelFrey (talk) |
Other versions |
|
Licensing
Public domainPublic domainfalsefalse |
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
}
rotate <0,360*clock,0>
}
plane
{
<0,0,-1>, -2.33
pigment { color White }
finish
{
ambient 0.35
diffuse 0.65
}
}
Assembly.inc
;http://www.f-lohmueller.de/pov_tut/animate/anim001d.htm Antialias=Off Antialias_Threshold=0.1 Antialias_Depth=2 Input_File_Name="knot.pov" Initial_Frame=1 Final_Frame=36 Initial_Clock=0 Final_Clock=1 Cyclic_Animation=on Pause_when_Done=off
build.sh
povray Assembly.inc +H480 +W480 +UA convert -dispose previous -delay 10 -loop 0 *.png myimage.gif firefox myimage.gif
Items portrayed in this file
depicts
some value
22 March 2010
image/gif
acae805b4c81490eea7aed9a6b61e2bd5e8597e9
1,718,970 byte
3.600000000000002 second
480 pixel
480 pixel
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 22:05, 28 December 2018 | 480 × 480 (1.64 MB) | MichaelFrey | {{Created with Persistence of Vision}} == {{int:filedesc}} == {{Information |Description={{en|1=A square knot.}} |Source={{own}} |Author=Jim.belk |Date=2010-03-22 |Permission= |other_versions=<gallery>File:Math-square-knot-6crossings.svg|vector File:Blue Granny Knot.png</gallery> }} == {{int:license-header}} == {{PD-self}} == 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-aliasin... |
File usage
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Metadata
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