package LaTeX::TikZ::Set::Rectangle;
use strict;
use warnings;
=head1 NAME
LaTeX::TikZ::Set::Rectangle - A set object representing a rectangle.
=head1 VERSION
Version 0.02
=cut
our $VERSION = '0.02';
use LaTeX::TikZ::Set::Point;
use LaTeX::TikZ::Interface;
use LaTeX::TikZ::Functor;
use Any::Moose;
=head1 RELATIONSHIPS
This class consumes the L<LaTeX::TikZ::Set::Op> role, and as such implements the L</path> method.
=cut
with 'LaTeX::TikZ::Set::Op';
=head1 ATTRIBUTES
=head2 C<from>
The first corner of the rectangle, as a L<LaTeX::TikZ::Set::Point> object.
=cut
has 'from' => (
is => 'ro',
isa => 'LaTeX::TikZ::Set::Point',
required => 1,
coerce => 1,
);
=head2 C<to>
The opposite endpoint of the rectangle, also as a L<LaTeX::TikZ::Set::Point> object.
=cut
has 'to' => (
is => 'ro',
isa => 'LaTeX::TikZ::Set::Point',
required => 1,
coerce => 1,
);
=head2 C<width>
The algebraic width of the rectangle.
=cut
has 'width' => (
is => 'ro',
isa => 'Num',
);
=head2 C<height>
The algebraic height of the rectangle.
=cut
has 'height' => (
is => 'ro',
isa => 'Num',
);
=head1 METHODS
=head2 C<path>
=cut
sub path {
my $set = shift;
$set->from->path(@_) . ' rectangle ' . $set->to->path(@_);
}
my $meta = __PACKAGE__->meta;
my $tc1 = $meta->find_attribute_by_name('from')->type_constraint;
my $tc2 = $meta->find_attribute_by_name('to')->type_constraint;
around 'BUILDARGS' => sub {
my $orig = shift;
my $class = shift;
if (@_ == 2 and $tc1->check($_[0]) and $tc2->check($_[1])) {
my ($from, $to) = @_;
@_ = (
from => $from,
to => $to,
width => $to->x - $from->x,
height => $to->y - $from->y,
);
} else {
my %args = @_;
if (not exists $args{to} and exists $args{from}) {
confess(<<' MSG') unless exists $args{width} and exists $args{height};
Attributes 'width' and 'height' are required when 'to' was not given
MSG
$args{from} = $tc1->coerce($args{from});
$meta->find_attribute_by_name($_)->type_constraint->assert_valid($args{$_})
for qw/from width height/;
my $p = $args{from}->point;
$args{to} = LaTeX::TikZ::Point->new(
x => $p->x + $args{width},
y => $p->y + $args{height},
);
@_ = %args;
}
}
$class->$orig(@_);
};
LaTeX::TikZ::Interface->register(
rectangle => sub {
shift;
my ($p, $q) = @_;
my $is_relative = !blessed($q) && ref($q) eq 'HASH';
__PACKAGE__->new(
from => $p,
($is_relative ? (map +($_ => $q->{$_}), qw/width height/) : (to => $q)),
);
},
);
LaTeX::TikZ::Functor->default_rule(
(__PACKAGE__) => sub {
my ($functor, $set, @args) = @_;
$set->new(map { $_ => $set->$_->$functor(@args) } qw/from to/)
}
);
__PACKAGE__->meta->make_immutable;
=head1 SEE ALSO
L<LaTeX::TikZ>, L<LaTeX::TikZ::Set::Op>.
=head1 AUTHOR
Vincent Pit, C<< <perl at profvince.com> >>, L<http://www.profvince.com>.
You can contact me by mail or on C<irc.perl.org> (vincent).
=head1 BUGS
Please report any bugs or feature requests to C<bug-latex-tikz at rt.cpan.org>, or through the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=LaTeX-TikZ>.
I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
=head1 SUPPORT
You can find documentation for this module with the perldoc command.
perldoc LaTeX::TikZ
=head1 COPYRIGHT & LICENSE
Copyright 2010 Vincent Pit, all rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
=cut
1; # End of LaTeX::TikZ::Set::Rectangle