#!/usr/bin/perl -w
# Copyright 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 => 99;
use lib 't';
use MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
use Math::PlanePath::FilledRings;
# uncomment this to run the ### lines
#use Smart::Comments;
#------------------------------------------------------------------------------
# VERSION
{
my $want_version = 118;
ok ($Math::PlanePath::FilledRings::VERSION, $want_version,
'VERSION variable');
ok (Math::PlanePath::FilledRings->VERSION, $want_version,
'VERSION class method');
ok (eval { Math::PlanePath::FilledRings->VERSION($want_version); 1 },
1,
"VERSION class check $want_version");
my $check_version = $want_version + 1000;
ok (! eval { Math::PlanePath::FilledRings->VERSION($check_version); 1 },
1,
"VERSION class check $check_version");
}
#------------------------------------------------------------------------------
# n_start, x_negative, y_negative
{
my $path = Math::PlanePath::FilledRings->new;
ok ($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::FilledRings->parameter_info_list;
ok (join(',',@pnames), 'n_start');
}
#------------------------------------------------------------------------------
# _cumul_extend()
sub cumul_calc {
my ($r) = @_;
my $sq = ($r+.5)**2;
my $count = 0;
foreach my $x (-$r-1 .. $r+1) {
my $x2 = $x*$x;
foreach my $y (-$r-1 .. $r+1) {
$count += ($x2 + $y*$y <= $sq);
}
}
return $count;
}
{
my $path = Math::PlanePath::FilledRings->new;
foreach my $r (0 .. 50) {
my $want = cumul_calc($r);
Math::PlanePath::FilledRings::_cumul_extend($path);
my $got = $path->{'cumul'}->[$r];
ok ($got, $want, "r=$r");
}
}
#------------------------------------------------------------------------------
# n_to_xy
{
my @data = ([ 1, 0,0 ],
[ 1.25, 0.25, 0 ],
[ 1.75, 0.75, 0 ],
[ 2, 1,0 ],
[ 2.25, 1, 0.25 ],
[ 3, 1,1 ], # top
[ 3.25, 0.75, 1 ],
[ 9, 1, -1 ],
[ 9.25, 1, -0.75 ],
[ 10, 2, 0 ],
[ 14, -1,2 ],
[ 14.25, -1.25, 1.75 ],
[ 21.25, 2, -0.75 ],
[ 37.25, 3, -0.75 ],
[ 38, 4, 0 ],
);
my $path = Math::PlanePath::FilledRings->new;
foreach my $elem (@data) {
my ($n, $want_x, $want_y) = @$elem;
my ($got_x, $got_y) = $path->n_to_xy ($n);
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;
if ($want_n == int($want_n)) {
my $got_n = $path->xy_to_n ($x, $y);
ok ($got_n, $want_n, "n at x=$x,y=$y");
}
}
}
#------------------------------------------------------------------------------
exit 0;