A couple years ago, I was admiring the engineering and craftsmanship in a set of window blinds. Artistically, I was interested in how the apparance changes dramatically due to lighting and self-shadowing as the sun changes position or the blinds are open to different angles. Engineeringly, I noted how the plate at the bottom was a cam that kept the strings taught at any angle.

So, I had to write a Perl model of the system. That's cool but borderline weird perhaps, but I justify my actions by having finished pictures on walls in gallaries. 

use Blinds;

my $x= new Blinds (34.75, 58);
$x->{angle} = $ARGV[0] || 30;

$x->render (\*STDOUT, "MyBlinds");

[download]
The Blinds object is constructed with the desired size. The slat width and other parameters defaults. The property sets the angle based on a command-line argument, so this sample animated the blinds in a loop.

You can see a picture and more information at my site. The Blinds uses normal Perl 5 objects in a typical way. In an earlier effort, mentioned on that page, I tried creating a language inside Perl, including a fancy object system that provided error checking on properties which had to be declared.

—John

In reply to Custom Wood Blinds by John M. Dlugosz

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.