#!/usr/bin/perl -w
# Copyright 2011, 2012, 2013, 2014, 2015, 2016, 2017 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 => 126;
use lib 't';
BEGIN { MyTestHelpers::nowarnings(); }
# uncomment this to run the ### lines
#use Devel::Comments;
#------------------------------------------------------------------------------
# VERSION
{
my $want_version = 125;
ok ($Math::PlanePath::HexArms::VERSION, $want_version,
'VERSION variable');
ok (Math::PlanePath::HexArms->VERSION, $want_version,
'VERSION class method');
ok (eval { Math::PlanePath::HexArms->VERSION($want_version); 1 },
1,
"VERSION class check $want_version");
my $check_version = $want_version + 1000;
ok (! eval { Math::PlanePath::HexArms->VERSION($check_version); 1 },
1,
"VERSION class check $check_version");
my $path = Math::PlanePath::HexArms->new;
ok ($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, arms_count
{
my $path = Math::PlanePath::HexArms->new;
ok ($path->n_start, 1, 'n_start()');
ok ($path->x_negative, 1, 'x_negative()');
ok ($path->y_negative, 1, 'y_negative()');
ok ($path->arms_count, 6, 'arms_count()');
}
#------------------------------------------------------------------------------
# first few points
{
my @data = ([ 1, 0,0 ],
[ 2, 2,0 ],
[ 8, 3,1 ],
[ 14, 2,2 ],
[ 3, 1,1 ],
[ 9, 0,2 ],
[ 15, -2,2 ],
[ 4, -1,1 ],
[ 10, -3,1 ],
[ 16, -4,0 ],
[ 5, -2,0 ],
[ 11, -3,-1 ],
[ 17, -2,-2 ],
[ 6, -1,-1 ],
[ 12, 0,-2 ],
[ 18, 2,-2 ],
[ 7, 1,-1 ],
[ 13, 3,-1 ],
[ 19, 4,0 ],
[ 1.75, .75, -.75 ],
[ 7.5, 2, -1 ],
[ 2.25, 2.25, .25 ],
[ 4.25, -1.5, 1 ],
[ 5.25, -2.25, -.25 ],
);
my $path = Math::PlanePath::HexArms->new;
foreach my $elem (@data) {
my ($n, $want_x, $want_y) = @$elem;
my ($got_x, $got_y) = $path->n_to_xy ($n);
if ($got_x == 0) { $got_x = 0 } # avoid -0
if ($got_y == 0) { $got_y = 0 }
ok ($got_x, $want_x, "x at n=$n");
ok ($got_y, $want_y, "y at n=$n");
}
foreach my $elem (@data) {
my ($want_n, $x, $y) = @$elem;
next unless $want_n==int($want_n);
my $got_n = $path->xy_to_n ($x, $y);
ok ($got_n, $want_n, "n at x=$x,y=$y");
}
foreach my $elem (@data) {
my ($n, $x, $y) = @$elem;
my ($got_nlo, $got_nhi) = $path->rect_to_n_range (0,0, $x,$y);
ok ($got_nlo <= $n, 1, "rect_to_n_range() nlo=$got_nlo at n=$n,x=$x,y=$y");
ok ($got_nhi >= $n, 1, "rect_to_n_range() nhi=$got_nhi at n=$n,x=$x,y=$y");
}
}
#------------------------------------------------------------------------------
# xy_to_n() distinct n
# {
# my $path = Math::PlanePath::HexArms->new;
# my $bad = 0;
# my %seen;
# my $xlo = -5;
# my $xhi = 100;
# my $ylo = -5;
# my $yhi = 100;
# my ($nlo, $nhi) = $path->rect_to_n_range($xlo,$ylo, $xhi,$yhi);
# my $count = 0;
# OUTER: for (my $x = $xlo; $x <= $xhi; $x++) {
# for (my $y = $ylo; $y <= $yhi; $y++) {
# next if ($x ^ $y) & 1;
# my $n = $path->xy_to_n ($x,$y);
# next if ! defined $n; # sparse
#
# if ($seen{$n}) {
# MyTestHelpers::diag ("x=$x,y=$y n=$n seen before at $seen{$n}");
# last if $bad++ > 10;
# }
# if ($n < $nlo) {
# MyTestHelpers::diag ("x=$x,y=$y n=$n below nlo=$nlo");
# last OUTER if $bad++ > 10;
# }
# if ($n > $nhi) {
# MyTestHelpers::diag ("x=$x,y=$y n=$n above nhi=$nhi");
# last OUTER if $bad++ > 10;
# }
# $seen{$n} = "$x,$y";
# $count++;
# }
# }
# ok ($bad, 0, "xy_to_n() coverage and distinct, $count points");
# }
exit 0;