Summary

DescriptionGosper curve 3.svg	Gosper curve of degree 4. Created by me as a vector replacement for Gosper curve 3.png .
Date	17 March 2007 (original upload date)
Source	Own work based on: Gosper curve 3.png
Author	Original: Arbol01   Vector: Blotwell
SVG development InfoField	The SVG code is valid.   This geometry was created with perl.

Source

The SVG file is produced by the following Perl script, which is based on the Logo implementation at Gosper-Kurve.

<source lang="perl">

1. !/bin/perl

use Math::Trig;

1. SVG Gosper curve generator by Blotwell
2. Released under GFDL

BEGIN{ print <<HEREDOC <?xml version="1.0" encoding="ISO-8859-1" standalone="no"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"

   "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
   <svg xmlns="http://www.w3.org/2000/svg"
        xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve"
               width="320px" height="320px"
                        viewBox="0 0 6400 6400">

HEREDOC

}

my $x=500, $y=2500, $a=90; printf "<polyline points=\"%i,%i,",$x,$y; sub p {printf "%i,%i,",$x,$y;} sub fd {my $n=shift; $x+=$n*cos(deg2rad($a)); $y-=$n*sin(deg2rad($a)); p();} sub tl {$a+=shift;} sub rt {$a-=shift;} my $ln=100; rg(4);

sub gl {my $st=-1+shift; if ($st<0) {fd($ln);} else {tl(60); rg($st); rt(60); gl($st); gl($st); rt(120); gl($st); rt(60); rg($st); tl(120); rg($st); tl(60); gl($st);}}

sub rg {my $st=-1+shift; if ($st<0) {fd($ln);} else {rg($st); rt(60); gl($st); rt(120); gl($st); tl(60); rg($st); tl(120); rg($st); rg($st); tl(60); gl($st); rt(60);}}

END{print '" stroke="black" stroke-width="30" stroke-linejoin="round" fill-opacity="0" />',"\n</svg>\n";} }} }}

Licensing

I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.