#!/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
MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
# uncomment this to run the ### lines
#use Devel::Comments;
require
Math::PlanePath::HexArms;
#------------------------------------------------------------------------------
# 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;