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# This code is part of Perl distribution Math-Polygon version 2.00.
# The POD got stripped from this file by OODoc version 3.03.
# For contributors see file ChangeLog.
# This software is copyright (c) 2004-2025 by Mark Overmeer.
# This is free software; you can redistribute it and/or modify it under
# the same terms as the Perl 5 programming language system itself.
# SPDX-License-Identifier: Artistic-1.0-Perl OR GPL-1.0-or-later
#oodist: *** DO NOT USE THIS VERSION FOR PRODUCTION ***
#oodist: This file contains OODoc-style documentation which will get stripped
#oodist: during its release in the distribution. You can use this file for
#oodist: testing, however the code of this development version may be broken!
package Math::Polygon::Surface;{
our $VERSION = '2.00';
}
use strict;
use warnings;
use Log::Report 'math-polygon';
use Scalar::Util qw/blessed/;
use Math::Polygon ();
#--------------------
sub new(@)
{ my $thing = shift;
my $class = ref $thing || $thing;
my (@poly, %options);
while(@_)
{ if(!ref $_[0]) { my $k = shift; $options{$k} = shift }
elsif(ref $_[0] eq 'ARRAY') { push @poly, shift }
elsif(blessed $_[0] && $_[0]->isa('Math::Polygon')) { push @poly, shift }
else { panic "illegal argument $_[0]" }
}
$options{_poly} = \@poly if @poly;
(bless {}, $class)->init(\%options);
}
sub init($$)
{ my ($self, $args) = @_;
my ($outer, @inner);
if($args->{_poly})
{ ($outer, @inner) = @{$args->{_poly}};
}
else
{ $outer = $args->{outer} or error __"surface requires outer polygon";
@inner = @{$args->{inner}} if defined $args->{inner};
}
foreach ($outer, @inner)
{ next unless ref $_ eq 'ARRAY';
$_ = Math::Polygon->new(points => $_);
}
$self->{MS_outer} = $outer;
$self->{MS_inner} = \@inner;
$self;
}
#--------------------
sub outer() { $_[0]->{MS_outer} }
sub inner() { @{$_[0]->{MS_inner}} }
#--------------------
sub bbox() { $_[0]->outer->bbox }
sub area()
{ my $self = shift;
my $area = $self->outer->area;
$area -= $_->area for $self->inner;
$area;
}
sub perimeter()
{ my $self = shift;
my $per = $self->outer->perimeter;
$per += $_->perimeter for $self->inner;
$per;
}
#--------------------
sub lineClip($$$$)
{ my ($self, @bbox) = @_;
map { $_->lineClip(@bbox) } $self->outer, $self->inner;
}
sub fillClip1($$$$)
{ my ($self, @bbox) = @_;
my $outer = $self->outer->fillClip1(@bbox);
return () unless defined $outer;
$self->new(
outer => $outer,
inner => [ map {$_->fillClip1(@bbox)} $self->inner ],
);
}
sub string()
{ my $self = shift;
"["
. join( "]\n-[",
$self->outer->string,
map $_->string, $self->inner)
. "]";
}
1;
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