File:Impossible trefoil knot Isometric.png: Difference between revisions
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(Trefoil (three-crossing) knot of mathematical knot theory, depicted as an impossible object, shown in isometric projection pseudo-perspective. Self-made, declared to be in public domain, generated from the following PostScript source code: <pre>%! 300 33) |
(simpler source) |
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dup/xc exch def exch .5 add 144 mul xc -72 mul add exch .5 add |
dup/xc exch def exch .5 add 144 mul xc -72 mul add exch .5 add |
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15552 sqrt mul exch}def/l{X lineto}def 0 3 X moveto 0 1 l 3 1 l 3 |
15552 sqrt mul exch}def/l{X lineto}def 0 3 X moveto 0 1 l 3 1 l 3 |
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2 l 1 2 l 1 0 l 2 0 l 2 3 l closepath 0 setgray 72 setlinewidth |
2 l 1 2 l 1 0 l 2 0 l 2 3 l closepath 0 setgray 72 setlinewidth 1 |
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setlinejoin stroke 9 setlinewidth 1 0 X moveto .75 -.25 l 2 -.25 |
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l 2.25 0 l closepath gsave 1 1 0 setrgbcolor fill grestore stroke |
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0 1 X moveto -.25 .75 l 3 .75 l 3.25 1 l closepath gsave 1 1 0 |
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⚫ | |||
⚫ | |||
⚫ | |||
closepath gsave 1 1 0 setrgbcolor fill grestore stroke 0 1 X |
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moveto -.25 .75 l 3 .75 l 3.25 1 l closepath gsave 1 1 0 |
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setrgbcolor fill grestore stroke 1.25 2 X moveto 1.25 1.75 l 2.75 |
setrgbcolor fill grestore stroke 1.25 2 X moveto 1.25 1.75 l 2.75 |
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1.75 l 3 2 l closepath gsave 1 1 0 setrgbcolor fill grestore |
1.75 l 3 2 l closepath gsave 1 1 0 setrgbcolor fill grestore |
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stroke .25 3 X moveto .25 2.75 l 1.75 2.75 l 2 3 l closepath |
stroke .25 3 X moveto .25 2.75 l 1.75 2.75 l 2 3 l closepath |
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gsave 1 1 0 setrgbcolor fill grestore stroke .25 |
gsave 1 1 0 setrgbcolor fill grestore stroke 0 3.25 X moveto 0 1 |
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l |
l -.25 .75 l -.25 3 l closepath gsave 0 .94 0 setrgbcolor fill |
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stroke |
grestore stroke 2 .75 X moveto 2 .25 l 1.75 .25 l 1.75 .75 l |
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0 |
closepath gsave 0 .94 0 setrgbcolor fill grestore stroke 1 2.25 X |
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-.25 l .75 2 l closepath gsave 0 |
moveto 1 0 l .75 -.25 l .75 2 l closepath gsave 0 .94 0 |
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stroke 2 1. |
setrgbcolor fill grestore stroke 2 1.25 X moveto 2 3 l 1.75 2.75 |
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⚫ | |||
setrgbcolor fill grestore stroke 3 2 X moveto 3 1.25 l 2.75 1.25 |
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⚫ | |||
l 2.75 1.75 l closepath gsave 0 1 0 setrgbcolor fill grestore |
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gsave 0 .94 0 setrgbcolor fill grestore stroke 2.25 1.25 X moveto |
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2.25 3.25 l 0 3.25 l 0 1 l .75 1 l .75 1.25 l .25 1.25 l .25 3 l |
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2 3 l 2 1.25 l closepath gsave 0 .25 1 setrgbcolor fill grestore |
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stroke 2.25 2.25 X moveto 3.25 2.25 l 3.25 1 l 1.25 1 l 1.25 1.25 |
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l 3 1.25 l 3 2 l 2.25 2 l closepath gsave 0 .25 1 setrgbcolor |
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fill grestore stroke 2 0.75 X moveto 2 .25 l 1.25 .25 l 1.25 2 l |
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1.75 2 l 1.75 2.25 l 1 2.25 l 1 0 l 2.25 0 l 2.25 0.75 l |
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⚫ | |||
2.25 .5 l stroke 2.3 2 X moveto 2.5 2 l stroke 22.5 setlinewidth |
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0 .25 1 setrgbcolor 1.125 1.45 X moveto 1.125 1.75 l stroke .6 |
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1.125 X moveto .4 1.125 l stroke 1.5 1.125 X moveto 1.334 1.125 l |
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stroke 4.5 setlinewidth 1.4 1.19286 X moveto 1.34 1.19286 l |
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stroke showpage |
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%EOF</pre> |
%EOF</pre> |
Latest revision as of 17:52, 7 June 2011
Trefoil (three-crossing) knot of mathematical knot theory, depicted as an impossible object, shown in isometric projection pseudo-perspective.
Self-made, declared to be in public domain, generated from the following PostScript source code:
%! 300 335 translate .6 dup scale 180 rotate 9 setlinewidth/X{exch dup/xc exch def exch .5 add 144 mul xc -72 mul add exch .5 add 15552 sqrt mul exch}def/l{X lineto}def 0 3 X moveto 0 1 l 3 1 l 3 2 l 1 2 l 1 0 l 2 0 l 2 3 l closepath 0 setgray 72 setlinewidth 1 setlinejoin stroke 9 setlinewidth 1 0 X moveto .75 -.25 l 2 -.25 l 2.25 0 l closepath gsave 1 1 0 setrgbcolor fill grestore stroke 0 1 X moveto -.25 .75 l 3 .75 l 3.25 1 l closepath gsave 1 1 0 setrgbcolor fill grestore stroke 1.25 2 X moveto 1.25 1.75 l 2.75 1.75 l 3 2 l closepath gsave 1 1 0 setrgbcolor fill grestore stroke .25 3 X moveto .25 2.75 l 1.75 2.75 l 2 3 l closepath gsave 1 1 0 setrgbcolor fill grestore stroke 0 3.25 X moveto 0 1 l -.25 .75 l -.25 3 l closepath gsave 0 .94 0 setrgbcolor fill grestore stroke 2 .75 X moveto 2 .25 l 1.75 .25 l 1.75 .75 l closepath gsave 0 .94 0 setrgbcolor fill grestore stroke 1 2.25 X moveto 1 0 l .75 -.25 l .75 2 l closepath gsave 0 .94 0 setrgbcolor fill grestore stroke 2 1.25 X moveto 2 3 l 1.75 2.75 l 1.75 1.25 l closepath gsave 0 .94 0 setrgbcolor fill grestore stroke 3 2 X moveto 3 1.25 l 2.75 1.25 l 2.75 1.75 l closepath gsave 0 .94 0 setrgbcolor fill grestore stroke 2.25 1.25 X moveto 2.25 3.25 l 0 3.25 l 0 1 l .75 1 l .75 1.25 l .25 1.25 l .25 3 l 2 3 l 2 1.25 l closepath gsave 0 .25 1 setrgbcolor fill grestore stroke 2.25 2.25 X moveto 3.25 2.25 l 3.25 1 l 1.25 1 l 1.25 1.25 l 3 1.25 l 3 2 l 2.25 2 l closepath gsave 0 .25 1 setrgbcolor fill grestore stroke 2 0.75 X moveto 2 .25 l 1.25 .25 l 1.25 2 l 1.75 2 l 1.75 2.25 l 1 2.25 l 1 0 l 2.25 0 l 2.25 0.75 l closepath gsave 0 .25 1 setrgbcolor fill grestore stroke showpage %EOF
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:39, 2 June 2011 | 432 × 600 (7 KB) | AnonMoos (talk | contribs) | Trefoil (three-crossing) knot of mathematical knot theory, depicted as an impossible object, shown in isometric projection pseudo-perspective. Self-made, declared to be in public domain, generated from the following PostScript source code: <pre>%! 300 33 |
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