Dragon curve: Difference between revisions
Content added Content deleted
(simplify base geometry) |
(added PS code, modelled looking at the Basic code) |
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end. |
end. |
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</pascal> |
</pascal> |
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=={{header|Postscript}}== |
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<pre> |
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%!PS |
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%%BoundingBox: 0 0 550 400 |
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/ifpendown false def |
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/rotation 0 def |
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/srootii 2 sqrt def |
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/turn { |
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rotation add /rotation exch def |
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} def |
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/forward { |
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dup rotation cos mul |
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exch rotation sin mul |
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ifpendown |
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{ rlineto } |
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{ rmoveto } |
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ifelse |
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} def |
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/penup { |
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/ifpendown false def |
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} def |
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/pendown { |
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/ifpendown true def |
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} def |
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/dragon { % [ length, split, d ] |
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dup |
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dup 1 get 0 eq |
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{ 0 get forward } |
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{ dup 2 get 45 mul turn |
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dup aload pop pop |
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1 sub exch srootii div exch |
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1 3 array astore dragon pop |
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dup 2 get 90 mul neg turn |
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dup aload pop pop |
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1 sub exch srootii div exch |
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-1 3 array astore dragon |
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dup 2 get 45 mul turn |
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} |
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ifelse |
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pop |
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} def |
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150 150 moveto pendown [ 300 12 1 ] dragon stroke |
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% 0 0 moveto 550 0 rlineto 0 400 rlineto -550 0 rlineto closepath stroke |
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showpage |
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%%END |
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</pre> |
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=={{header|Python}}== |
=={{header|Python}}== |
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