Here's a fairly crude Mandelbrot I prepared earlier: 

#!/usr/bin/perl -w

use strict;
use GD;

use vars qw($P @Q $col $row @colours );

my ($maxcol,
    $maxrow,
    $max_colours,
    $max_iterations,
    $max_size )       = (640,350,16,512,4);

my ($XMax,$XMin,$YMax,$YMin) = (1.2,-2.0,1.2,-1.2);

my $deltaP = ($XMax - $XMin) / $maxcol;
my $deltaQ = ($YMax - $YMin) / $maxrow;

$Q[0] = $YMax;

my $image = new GD::Image($maxcol,$maxrow);

for ( 0 .. $max_colours - 1)
  {
    $colours[$_] = $image->colorAllocate(int(rand(256)),
                                         int(rand(256)),
                                         int(rand(256)));
  }

for( 1 .. $maxrow )
  {
    $Q[$_] = $Q[$_ -1] - $deltaQ;
  }

$P = $XMin;

for $col ( 0 .. $maxcol -1 )
  {
    for $row ( 0 .. $maxrow - 1)
      {
        my ($X,$Y,$XSquare,$YSquare) = (0,0,0,0);

        my $colour = 1;

        while (( $colour < $max_iterations ) &&
               (($XSquare + $YSquare ) < $max_size ))
           {
             $XSquare = $X * $X;
             $YSquare = $Y * $Y;

             $Y *= $X;
             $Y += $Y + $Q[$row];
             $X = $XSquare - $YSquare + $P;
             $colour++;
           }
           $image->setPixel($col,$row,$colours[$colour % $max_colours]
+);
       }
     $P += $deltaP;
   }

open(PNG,">image$$.png") || die "Cannot open output - $!\n";
binmode(PNG);
print PNG $image->png;
close(PNG);

[download]

If you look in the examples for my module Linux::Svgalib there are some further examples.

/J\

In reply to Re: Generating Fractals with Perl? by gellyfish
in thread Generating Fractals with Perl? by Anonymous Monk

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