272:#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 = 0.05; #declare num_steps = 36; #declare step_size = 1/num_steps; sphere_sweep { cubic_spline num_steps+3, #declare N = -1; #while(N <= num_steps + 1) #declare theta = 2 * pi * N * step_size; < 0.75*cos(3*theta + 0.1), 0.75*cos(4*theta + 0.7) + 0.05, 0.3*cos(7*theta)-0.04>, r_tube #declare N = N + 1; #end pigment { color rgb <0,0.25,1> } finish { ambient 0.15 diffuse 0.85 brilliance 2 phong 0.25 phong_size 5 } } plane { <0,0,-1>, -0.4 pigment { color White } finish { ambient 0.35 diffuse 0.65 } }
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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.
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599:{{Information |Description={{en|1=A Lissajous 8<sub>21</sub> knot.}} |Source={{own}} |Author=
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Commons is a freely licensed media file repository.
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