Geo::Formatter::CalcurateDMS - Bonus class for provide dms/degree convert functions

Geo-Formatter documentation Contained in the Geo-Formatter distribution.

Index

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NAME

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Geo::Formatter::CalcurateDMS - Bonus class for provide dms/degree convert functions

DESCRIPTION

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This module provides bonus functions to convert dms/degree value each other. These are convinient to use in Geo::Formatter::Format::XXX.

EXPORT

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2 functions are exported.

* __degree2dms( [DEGREE] )

Return values are [FLAG OF MINUS],[INT_DEGREE],[INT_MINUTE],[FLOAT_SECOND].

* __dms2degree( [FLAG OF MINUS],[INT_DEGREE],[INT_MINUTE],[FLOAT_SECOND] )

Return value is [DEGREE].

DEPENDENCIES

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Exporter

AUTHOR

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OHTSUKA Ko-hei <nene@kokogiko.net>

LICENCE AND COPYRIGHT

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Copyright (c) 2008, OHTSUKA Ko-hei <nene@kokogiko.net>.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.

DISCLAIMER OF WARRANTY

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BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Geo-Formatter documentation Contained in the Geo-Formatter distribution. 
package Geo::Formatter::CalcurateDMS;

use warnings;
use strict;
use Carp;

use version; our $VERSION = qv('0.0.1');
use vars qw(@ISA @EXPORT);
use Exporter;
@ISA = qw(Exporter);
@EXPORT      = qw(__degree2dms __dms2degree);

sub __degree2dms {
    my $degree = shift;

    my $minus  = $degree < 0 ? 1 : 0;
    $degree    = abs($degree);
    my $minute = ($degree - int($degree)) * 60;
    my $second = ($minute - int($minute)) * 60;

    return ($minus,int($degree),int($minute),$second);
}

sub __dms2degree {
    my ($minus,$degree,$minute,$second) = @_;

    $degree = int($degree) + int($minute) / 60 + $second / 3600;
    $degree *= -1 if ($minus);

    return $degree;
}

1;
__END__