#!/usr/bin/perl -w
# Copyright 2010, 2011, 2012 Kevin Ryde
# This file is part of Math-PlanePath.
#
# Math-PlanePath is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3, or (at your option) any later
# version.
#
# Math-PlanePath is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with Math-PlanePath. If not, see .
use 5.005;
use strict;
use POSIX ();
use Math::PlanePath::GosperIslands;
# uncomment this to run the ### lines
use Smart::Comments;
{
my $path = Math::PlanePath::GosperIslands->new;
my @rows = ((' ' x 64) x 78);
my $level = 3;
my $n_start = 3**$level - 2;
my $n_end = 3**($level+1) - 2 - 1;
foreach my $n ($n_start .. $n_end) {
my ($x, $y) = $path->n_to_xy ($n);
# $x *= 2;
$x+= 16;
$y+= 16;
substr ($rows[$y], $x,1, '*');
}
local $,="\n";
print reverse @rows;
exit 0;
}