In this code block:

  # p1 is starting or anchor point of the line segment
  foreach my $p1 (@{$points}) {

    # p2 is end point of the line segment
    foreach my $p2 (@{$points}) {

      # We don't need to caculate if anchor and end are the same
      # or we have already seen these two pairs [reversed] before    
      unless ( ($p1 == $p2) || $found->{$p2}->{$p1} ) {

        # Compute the edge
        my $edge = sqrt(
          ($p1->[0] - $p2->[0])**2 +
          ($p1->[1] - $p2->[1])**2
        );

        # Push the whole thing on a stack
        push (@edges, [ $edge, $p1->[0], $p1->[1], $p2->[0], $p2->[1] 
+]);

        # Keep track of the edges we've already computed (no need to d
+o so twice)
        $found->{$p2}->{$p1} = 1;

      }
    }
  }
[download]

Can you perhaps do:

# outer loop goes through all points
for my $i ( 0 .. $#{$points}) {

    # inner loop only through those not visited yet
    for my $j ( ( $i + 1 ) .. $#{$points}) {

        # Compute the edge      
        my $edge = sqrt(
            ( $points->[$i][0] - $points->[$j][0] )**2 +
            ( $points->[$i][1] - $points->[$j][1] )**2
        );
        

        # Push the whole thing on a stack
        push (@edges, [
            $edge,
            $points->[$i][0],
            $points->[$i][1],
            $points->[$j][0],
            $points->[$j][1]
            ]
        );            
    }
  }
}
[download]

I don't know enough about the problem space to be sure this is helpful or hurtful...

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

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:
	&		&
	<		&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.