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# Copyrights 2005-2021 by [Mark Overmeer].
#  For other contributors see ChangeLog.
# See the manual pages for details on the licensing terms.
# Pod stripped from pm file by OODoc 2.02.
# This code is part of distribution Geo-Point.  Meta-POD processed with
# OODoc into POD and HTML manual-pages.  See README.md
# Copyright Mark Overmeer.  Licensed under the same terms as Perl itself.

package Geo::Space;
use vars '$VERSION';
$VERSION = '0.99';

use base 'Geo::Shape';

use strict;
use warnings;

use Math::Polygon::Calc    qw/polygon_bbox/;
use List::Util             qw/sum first/;


sub new(@)
{   my $thing = shift;
    my @components;
    push @components, shift while ref $_[0];
    my %args  = @_;

    if(ref $thing)    # instance method
    {   $args{proj} ||= $thing->proj;
    }

    my $proj = $args{proj};
    return () unless @components;

    $thing->SUPER::new(components => \@components);
}

sub init($)
{   my ($self, $args) = @_;
    $self->SUPER::init($args);

    $self->{GS_comp} = $args->{components} || [];
    $self;
}


sub components() { @{shift->{GS_comp}} }


sub component(@)
{   my $self = shift;
    wantarray ? $self->{GS_comp}[shift] : @{$self->{GS_comp}}[@_];
}


sub nrComponents() { scalar @{shift->{GS_comp}} }


sub points()     { grep $_->isa('Geo::Points'), shift->components }


sub onlyPoints() { not first {! $_->isa('Geo::Points')} shift->components }


sub lines()      { grep $_->isa('Geo::Line'), shift->components }


sub onlyLines()  { not first {! $_->isa('Geo::Line')} shift->components }


sub onlyRings()  { not first {! $_->isa('Geo::Line') || ! $_->isRing}
                         shift->components }


sub in($)
{   my ($self, $projnew) = @_;
    return $self if ! defined $projnew || $projnew eq $self->proj;