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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 => 15;
use lib 't';
use MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
# uncomment this to run the ### lines
#use Smart::Comments;
require Math::PlanePath::PixelRings;
#------------------------------------------------------------------------------
# VERSION
{
my $want_version = 117;
ok ($Math::PlanePath::PixelRings::VERSION, $want_version,
'VERSION variable');
ok (Math::PlanePath::PixelRings->VERSION, $want_version,
'VERSION class method');
ok (eval { Math::PlanePath::PixelRings->VERSION($want_version); 1 },
1,
"VERSION class check $want_version");
my $check_version = $want_version + 1000;
ok (! eval { Math::PlanePath::PixelRings->VERSION($check_version); 1 },
1,
"VERSION class check $check_version");
my $path = Math::PlanePath::PixelRings->new;
ok ($path->VERSION, $want_version, 'VERSION object method');
ok (eval { $path->VERSION($want_version); 1 },
1,
"VERSION object check $want_version");
ok (! eval { $path->VERSION($check_version); 1 },
1,
"VERSION object check $check_version");
}
#------------------------------------------------------------------------------
# n_start, x_negative, y_negative
{
my $path = Math::PlanePath::PixelRings->new;
ok ($path->n_start, 1, 'n_start()');
ok ($path->x_negative, 1, 'x_negative()');
ok ($path->y_negative, 1, 'y_negative()');
ok ($path->class_x_negative, 1, 'class_x_negative()');
ok ($path->class_y_negative, 1, 'class_y_negative()');
ok ($path->n_frac_discontinuity, 0, 'n_frac_discontinuity()');
}
{
my @pnames = map {$_->{'name'}}
Math::PlanePath::PixelRings->parameter_info_list;
ok (join(',',@pnames), '');
}
#------------------------------------------------------------------------------
# xy_to_n() diagonals
{
my $path = Math::PlanePath::PixelRings->new;
my $bad = 0;
for (my $i = 0; $i < 3000; $i++) {
my $n = $path->xy_to_n ($i, $i)
or next;
my ($x,$y) = $path->n_to_xy ($n);
my $got = "$x,$y";
my $want = "$i,$i";
if ($got ne $want) {
MyTestHelpers::diag ("xy_to_n() wrong on diagonal $i,$i n=$n vs $x,$y");
if ($bad++ > 10) {
last;
}
}
}
ok ($bad, 0);
}
# {
# my $path = Math::PlanePath::PixelRings->new;
# my %xy_to_n;
# ### n range: $path->rect_to_n_range (-60,-60, 60,60)
# my ($n_lo, $n_hi) = $path->rect_to_n_range (-60,-60, 60,60);
# foreach my $n ($n_lo .. $n_hi) {
# my ($x,$y) = $path->n_to_xy($n);
# my $key = "$x,$y";
# if ($xy_to_n{$key}) {
# die "Oops, n_to_xy repeat $x,$y: was $xy_to_n{$key} now $n too";
# }
# $xy_to_n{$key} = $n;
# ### n_to_xy gives: "$x,$y -> $n"
# }
# ### total: scalar(%xy_to_n)
# foreach my $x (0 .. 60, -60 .. -1) {
# foreach my $y (0 .. 60, -60 .. -1) {
# ok ($path->xy_to_n($x,$y), $xy_to_n{"$x,$y"},
# "xy_to_n($x,$y)");
# }
# }
# }
exit 0;
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