Something like this should work (though I haven't tested it) with the current Rakudo Star release: 
use v6;
use SVG;

my $r = 150 / 2;

my @parts = :circle[
    cx      => $r,
    cy      => $r,
    r       => $r,
    stlye   => 'fill:none; stroke: black; stroke-width: 1',
];

for 0, 2 ...^ 360 -> $degrees {
    my $rad = $degrees / 360 * 2 * pi;
    @parts.push: 'line' => [
        x1  => $r,
        y1  => $r,
        x2  => $r + $r * cos($rad),
        y2  => $r + $r * sin($rad),
    ];
}

say SVG.serialize:
    'svg' => [
        width  => 2 * $r,
        height => 2 * $r,
        @parts,
    ];

[download]

Run it as 

perl6 circle.pl > circle.svg

[download]

and scale to your desired size.

Perl 6 - second systems done right

In reply to Re: optical encoder by moritz
in thread optical encoder by oluwaseun

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.