#!/usr/bin/perl -w
# Copyright 2011, 2012, 2013, 2014, 2015 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 => 2250;
use lib 't';
use MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
require Math::PlanePath::GreekKeySpiral;
#------------------------------------------------------------------------------
# VERSION
{
my $want_version = 119;
ok ($Math::PlanePath::GreekKeySpiral::VERSION, $want_version,
'VERSION variable');
ok (Math::PlanePath::GreekKeySpiral->VERSION, $want_version,
'VERSION class method');
ok (eval { Math::PlanePath::GreekKeySpiral->VERSION($want_version); 1 },
1,
"VERSION class check $want_version");
my $check_version = $want_version + 1000;
ok (! eval { Math::PlanePath::GreekKeySpiral->VERSION($check_version); 1 },
1,
"VERSION class check $check_version");
my $path = Math::PlanePath::GreekKeySpiral->new;
ok ($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 $path = Math::PlanePath::GreekKeySpiral->new;
ok ($path->n_start, 1, 'n_start()');
ok ($path->x_negative, 1, 'x_negative()');
ok ($path->y_negative, 1, 'y_negative()');
my @pnames = map {$_->{'name'}} $path->parameter_info_list;
ok (join(',',@pnames), 'turns');
}
#------------------------------------------------------------------------------
# first few points
{
my @groups = ([ { turns => 0 },
[ 1, 0,0 ],
[ 2, 1,0 ],
[ 3, 1,1 ],
[ 4, 0,1 ],
[ 5, -1,1 ],
[ 6, -1,0 ],
[ 7, -1,-1 ],
],
[ { turns => 1 },
[ 1, 0,0 ],
[ 2, 0,1 ],
[ 3, 1,1 ],
[ 4, 1,0 ],
[ 5, 2,0 ],
[ 6, 3,0 ],
[ 7, 3,1 ],
[ 8, 2,1 ],
],
[ { turns => 2 },
[ 1, 0,0 ],
[ 2, 1,0 ],
[ 3, 1,1 ],
[ 4, 0,1 ],
[ 5, 0,2 ],
[ 6, 1,2 ],
[ 7, 2,2 ],
[ 8, 2,1 ],
[ 9, 2,0 ],
[ 10, 3,0 ],
],
);
foreach my $group (@groups) {
my ($options, @data) = @$group;
my $path = Math::PlanePath::GreekKeySpiral->new (%$options);
my $turns = $options->{'turns'};
foreach my $elem (@data) {
my ($n, $x,$y) = @$elem;
{
my ($got_x,$got_y) = $path->n_to_xy($n);
ok ($got_x == $x, 1, "turns=$turns n=$n");
ok ($got_y == $y, 1);
}
{
my @got_n_list = $path->xy_to_n_list($x,$y);
ok (scalar(@got_n_list), 1);
my $got_n_str = join(',', @got_n_list);
ok ($got_n_str, $n);
}
{
my $got_n = $path->xy_to_n($x,$y);
ok ($got_n, $n);
}
}
}
}
#------------------------------------------------------------------------------
# n_to_xy() fractions part way between integer points
{
foreach my $turns (0, 1, 2, 3, 4, 5, 20) {
my $path = Math::PlanePath::GreekKeySpiral->new (turns => $turns);
my $bad = 0;
PATH: foreach my $n ($path->n_start .. $path->n_start + 500) {
my ($x,$y) = $path->n_to_xy ($n);
my ($x2,$y2) = $path->n_to_xy ($n+1);
foreach my $frac (0.25, 0.5, 0.75) {
my $nfrac = $n + $frac;
my ($got_xfrac,$got_yfrac) = $path->n_to_xy ($nfrac);
my $want_xfrac = $x + $frac*($x2-$x);
my $want_yfrac = $y + $frac*($y2-$y);
if ($got_xfrac != $want_xfrac
|| $got_yfrac != $want_yfrac) {
MyTestHelpers::diag ("xy frac at n=$nfrac");
last PATH if $bad++ > 10;
}
}
}
ok ($bad, 0, "n_to_xy() fraction turns=$turns");
}
}
#------------------------------------------------------------------------------
# xy_to_n() reversals
foreach my $turns (0, 1, 2, 3, 4, 5, 20) {
my $path = Math::PlanePath::GreekKeySpiral->new (turns => $turns);
my $bad = 0;
PATH: foreach my $n ($path->n_start .. $path->n_start + $turns*$turns*128) {
my ($x,$y) = $path->n_to_xy ($n);
my $got_n = $path->xy_to_n ($x, $y);
if ($got_n != $n) {
MyTestHelpers::diag ("n=$n is $x,$y xy_to_n()=$got_n");
last PATH if $bad++ > 10;
}
}
ok ($bad, 0, "xy_to_n() reversals");
}
#------------------------------------------------------------------------------
# rect_to_n_range() first and last
foreach my $turns (2, 3, 4, 5, 20, 1, 0) {
my $side = $turns+1;
my $path = Math::PlanePath::GreekKeySpiral->new (turns => $turns);
foreach my $i (1 .. 100) {
my $x = $side*$i + $side-1;
my $y = -$side*$i;
my $n = $path->xy_to_n ($x,$y);
my ($n_lo, $n_hi) = $path->rect_to_n_range (0,0, $x,$y);
ok ($n_hi, $n, "rect_to_n_range() turns=$turns i=$i hi last x=$x,y=$y");
$x++;
$n++;
ok ($path->xy_to_n($x,$y), $n);
($n_lo, $n_hi) = $path->rect_to_n_range ($x,$y, $x,$y);
ok ($n_lo, $n, "rect_to_n_range() turns=$turns i=$i lo first x=$x,y=$y n=$n");
}
}
exit 0;