#!/usr/bin/perl -w
# Copyright 2010, 2011, 2012, 2013 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 => 8;
use lib 't','xt';
use MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
use MyOEIS;
# uncomment this to run the ### lines
#use Smart::Comments '###';
use Math::PlanePath::KnightSpiral;
use Math::PlanePath::SquareSpiral;
my $knight = Math::PlanePath::KnightSpiral->new;
my $square = Math::PlanePath::SquareSpiral->new;
#------------------------------------------------------------------------------
# A068608 - N values in square spiral order, same first step
MyOEIS::compare_values
(anum => 'A068608',
func => sub {
my ($count) = @_;
my @got;
foreach my $n (1 .. $count) {
my ($x, $y) = $knight->n_to_xy ($n);
push @got, $square->xy_to_n ($x, $y);
}
return \@got;
});
# A068609 - rotate 90 degrees
MyOEIS::compare_values
(anum => 'A068609',
func => sub {
my ($count) = @_;
my @got;
foreach my $n (1 .. $count) {
my ($x, $y) = $knight->n_to_xy ($n);
### knight: "$n $x,$y"
($x, $y) = (-$y, $x);
push @got, $square->xy_to_n ($x, $y);
### rotated: "$x,$y"
### is: "got[$#got] = $got[-1]"
}
return \@got;
});
# A068610 - rotate 180 degrees
MyOEIS::compare_values
(anum => 'A068610',
func => sub {
my ($count) = @_;
my @got;
foreach my $n (1 .. $count) {
my ($x, $y) = $knight->n_to_xy ($n);
($x, $y) = (-$x, -$y);
push @got, $square->xy_to_n ($x, $y);
}
return \@got;
});
# A068611 - rotate 270 degrees
MyOEIS::compare_values
(anum => 'A068611',
func => sub {
my ($count) = @_;
my @got;
foreach my $n (1 .. $count) {
my ($x, $y) = $knight->n_to_xy ($n);
($x, $y) = ($y, -$x);
push @got, $square->xy_to_n ($x, $y);
}
return \@got;
});
# A068612 - rotate 180 degrees, opp direction, being X negated
MyOEIS::compare_values
(anum => 'A068612',
func => sub {
my ($count) = @_;
my @got;
foreach my $n (1 .. $count) {
my ($x, $y) = $knight->n_to_xy ($n);
$x = -$x;
push @got, $square->xy_to_n ($x, $y);
}
return \@got;
});
# A068613 -
MyOEIS::compare_values
(anum => 'A068613',
func => sub {
my ($count) = @_;
my @got;
foreach my $n (1 .. $count) {
my ($x, $y) = $knight->n_to_xy ($n);
($x, $y) = (-$y, -$x);
push @got, $square->xy_to_n ($x, $y);
}
return \@got;
});
# A068614 - clockwise, Y negated
MyOEIS::compare_values
(anum => 'A068614',
func => sub {
my ($count) = @_;
my @got;
foreach my $n (1 .. $count) {
my ($x, $y) = $knight->n_to_xy ($n);
$y = -$y;
push @got, $square->xy_to_n ($x, $y);
}
return \@got;
});
# A068615 - transpose
MyOEIS::compare_values
(anum => 'A068615',
func => sub {
my ($count) = @_;
my @got;
foreach my $n (1 .. $count) {
my ($x, $y) = $knight->n_to_xy ($n);
($y, $x) = ($x, $y);
push @got, $square->xy_to_n ($x, $y);
}
return \@got;
});
exit 0;