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#!/usr/bin/perl -w
# Copyright 2011, 2012, 2013, 2014 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 <http://www.gnu.org/licenses/>.
use 5.004;
use strict;
use Test;
plan tests => 6;
use lib 't';
use MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
use Math::PlanePath::FibonacciWordFractal;
#------------------------------------------------------------------------------
# VERSION
{
my $want_version = 117;
ok ($Math::PlanePath::FibonacciWordFractal::VERSION, $want_version,
'VERSION variable');
ok (Math::PlanePath::FibonacciWordFractal->VERSION, $want_version,
'VERSION class method');
ok (eval { Math::PlanePath::FibonacciWordFractal->VERSION($want_version); 1 },
1,
"VERSION class check $want_version");
my $check_version = $want_version + 1000;
ok (! eval { Math::PlanePath::FibonacciWordFractal->VERSION($check_version); 1 },
1,
"VERSION class check $check_version");
}
#------------------------------------------------------------------------------
# xy_to_n() near origin
{
my $bad = 0;
my $path = Math::PlanePath::FibonacciWordFractal->new;
OUTER:
foreach my $x (-8 .. 16) {
foreach my $y (-8 .. 16) {
my $n = $path->xy_to_n ($x,$y);
next unless defined $n;
my ($nx,$ny) = $path->n_to_xy ($n);
if ($nx != $x || $ny != $y) {
MyTestHelpers::diag("xy_to_n($x,$y) gives n=$n, which is $nx,$ny");
last OUTER if ++$bad > 10;
}
}
}
ok ($bad, 0);
}
#------------------------------------------------------------------------------
# n_to_xy() fracs
{
my $bad = 0;
my $path = Math::PlanePath::FibonacciWordFractal->new;
foreach my $n (0 .. 89) {
my ($x1,$y1) = $path->n_to_xy ($n);
my ($x2,$y2) = $path->n_to_xy ($n+1);
my $want_x = $x1 + ($x2-$x1)*.25;
my $want_y = $y1 + ($y2-$y1)*.25;
my $n_frac = $n + .25;
my ($got_x,$got_y) = $path->n_to_xy ($n_frac);
if ($got_x != $want_x || $got_y != $want_y) {
MyTestHelpers::diag("n_to_xy($n_frac) got $got_x,$got_y want $want_x,$want_y");
last if ++$bad > 10;
}
}
ok ($bad, 0);
}
exit 0;
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