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| View Original: | Impossible trefoil knot Isometric.svg (432x600) | |||
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| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Impossible trefoil knot Isometric.svg Trefoil three-crossing knot of mathematical knot theory depicted as an impossible object shown in isometric projection pseudo-perspective Converted from the following vector PostScript source code <pre> 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</pre> 2011 AnonMoos Trefoil knots Penrose figures Isometric projection Images with PostScript source code Knots and links on transparent background Outline knots and links | ||||
