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very cool.

A few alterations to use GD, a bit of randomness in the number of points, and it makes a sweet Eterm background generator.

It takes a little while of course, since it's plotting a pixel at a time, but the good news is: it's perfectly tile-able

#!/usr/bin/perl use strict; use GD; my $numColors = 128; my $size = 200; my ($XMIN, $XMAX) = qw(0 1); my ($YMIN, $YMAX) = qw(0 1); my $POINTS = 3 + int(rand(6)); my $xfact = ($XMAX - $XMIN) / $size; my $yfact = ($YMAX - $YMIN) / $size; # allocate some colors my @colors; my $img = new GD::Image($size, $size); for (my $i = 0; $i < $numColors; $i++) { push @colors, $img->colorAllocate(1, 1, $i * (256 / $numColors)); } my (@xs, @ys); # Pick some random points for (1..$POINTS) { my ($xrand, $yrand) = (rand(), rand()); for my $xoffset (-1..1) { for my $yoffset (-1..1) { push (@xs, $xrand + $xoffset); push (@ys, $yrand + $yoffset); } } } # Calculate screen for (my $yi = 0; $yi < $size; $yi++) { my $y = $YMIN + $yi * $yfact; for (my $xi = 0; $xi < $size; $xi++) { my $x = $XMIN + $xi * $xfact; my ($best, $good) = closest($x, $y, \@xs, \@ys); $img->setPixel($xi, $yi, $colors[int($numColors * ($best / $good))]); } } binmode STDOUT; print $img->png(); sub closest { my ($x, $y, $xs, $ys) = @_; my ($dist, $best, $good); for (my $i = 0; $i < @$xs; $i++) { $dist = sqrt(($x - $xs->[$i])**2 + ($y - $ys->[$i])**2); if ($i == 0 || $dist < $best) { ($good, $best) = ($best, $d +ist); } elsif ($i == 1 || $dist < $good) { $good = $dist; } } return ($best, $good); }

In reply to Re: Perl Spots by hossman
in thread Perl Spots by YuckFoo

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