File:10crossings square.png: Difference between revisions

Square depiction of 10_116 knot. For a similar but less complex visual representation of a knot, see Image:Trefoil-square.png.

Self-made, declared to be in public domain, generated from the following PostScript source code:

%!
1 setgray 18 setlinewidth/X{.5 add 72 mul exch .5 add 72 mul
exch}def/l{X lineto}def 0 5 X moveto 0 2 l 5 2 l 5 3 l 1 3 l 1 1
l 4 1 l 4 4 l 2 4 l 2 0 l 3 0 l 3 5 l closepath gsave 0 setgray
36 setlinewidth stroke grestore stroke/r{72 mul exch 72 mul exch
rlineto}def 36 setlinewidth 0 setgray
1 2 3{/z exch def 1.5 2 3.5{dup 3.5 eq z 1 eq
and{}{z X moveto 1 0 r stroke}ifelse}for}for
2 2 4{/z exch def 0.5 2 2.5{dup 0.5 eq z 4 eq
and{}{z X moveto 1 0 r stroke}ifelse}for}for
2 1.5 X moveto 0 1 r stroke 3 .5 X moveto 0 1 r stroke
3 2.5 X moveto 0 1 r stroke 4 1.5 X moveto 0 1 r stroke
1 setgray 18 setlinewidth
1 2 3{/z exch def 1.48 2 3.48{dup 3.48 eq z 1 eq
and{}{z X moveto 1.04 0 r stroke}ifelse}for}for
2 2 4{/z exch def 0.48 2 2.48{dup 0.48 eq z 4 eq
and{}{z X moveto 1.04 0 r stroke}ifelse}for}for
2 1.48 X moveto 0 1.04 r stroke 3 .48 X moveto 0 1.04 r stroke
3 2.48 X moveto 0 1.04 r stroke 4 1.48 X moveto 0 1.04 r stroke
showpage
%EOF