#!/usr/bin/perl -w
# Copyright 2010, 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 => 28;;
use lib 't';
use MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
require Math::PlanePath::TheodorusSpiral;
my $path = Math::PlanePath::TheodorusSpiral->new;
#------------------------------------------------------------------------------
# VERSION
{
my $want_version = 125;
ok ($Math::PlanePath::TheodorusSpiral::VERSION, $want_version,
'VERSION variable');
ok (Math::PlanePath::TheodorusSpiral->VERSION, $want_version,
'VERSION class method');
ok (eval { Math::PlanePath::TheodorusSpiral->VERSION($want_version); 1 },
1,
"VERSION class check $want_version");
my $check_version = $want_version + 1000;
ok (! eval { Math::PlanePath::TheodorusSpiral->VERSION($check_version); 1 },
1,
"VERSION class check $check_version");
ok ($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 $check_version");
}
#------------------------------------------------------------------------------
# n_start, x_negative, y_negative
{
ok ($path->n_start, 0, 'n_start()');
ok ($path->x_negative, 1, 'x_negative()');
ok ($path->y_negative, 1, 'y_negative()');
}
#------------------------------------------------------------------------------
{
my $n_save = Math::PlanePath::TheodorusSpiral::_SAVE();
my $n = 2 * $n_save - 10;
my ($x1,$y1) = $path->n_to_xy ($n);
$path->n_to_xy ($n + 10); # forward
my ($x2,$y2) = $path->n_to_xy ($n);
ok ($x1, $x2);
ok ($y1, $y2);
}
{
my ($x,$y) = $path->n_to_xy (0);
ok ($x, 0);
ok ($y, 0);
}
{
my ($x,$y) = $path->n_to_xy (1);
ok ($x, 1);
ok ($y, 0);
}
{
my ($x,$y) = $path->n_to_xy (2);
ok ($x, 1);
ok ($y, 1);
}
#------------------------------------------------------------------------------
# n_to_rsquared()
{
my $path = Math::PlanePath::TheodorusSpiral->new;
ok ($path->n_to_rsquared(0), 0);
{
ok ($path->n_to_rsquared(0.5), 0.25); # X=0.5, Y=0
my ($x,$y) = $path->n_to_xy(0.5);
ok ($path->n_to_rsquared(0.5), $x*$x+$y*$y);
}
ok ($path->n_to_rsquared(1), 1);
{
ok ($path->n_to_rsquared(1.5), 1.25); # X=1, Y=0.5
my ($x,$y) = $path->n_to_xy(1.5);
ok ($path->n_to_rsquared(1.5), $x*$x+$y*$y);
}
{
ok ($path->n_to_rsquared(2.5), 2.25); # X=1, Y=0.5
my ($x,$y) = $path->n_to_xy(2.5);
ok ($path->n_to_rsquared(2.5), $x*$x+$y*$y);
}
{
ok ($path->n_to_rsquared(123.5), 123.25); # X=1, Y=0.5
my ($x,$y) = $path->n_to_xy(123.5);
ok ($path->n_to_rsquared(123.5), $x*$x+$y*$y);
}
}
exit 0;