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package Slic3r::Polygon;
use strict;
use warnings;
# a polygon is a closed polyline.
# if you're asking why there's a Slic3r::Polygon as well
# as a Slic3r::Polyline::Closed you're right. I plan to
# ditch the latter and port everything to this class.
use Slic3r::Geometry qw(polygon_lines polygon_remove_parallel_continuous_edges
polygon_segment_having_point point_in_polygon move_points rotate_points);
use Slic3r::Geometry::Clipper qw(JT_MITER);
# the constructor accepts an array(ref) of points
sub new {
my $class = shift;
my $self;
if (@_ == 1) {
$self = [ @{$_[0]} ];
} else {
$self = [ @_ ];
}
bless $self, $class;
bless $_, 'Slic3r::Point' for @$self;
$self;
}
# legacy method, to be removed when we ditch Slic3r::Polyline::Closed
sub closed_polyline {
my $self = shift;
return Slic3r::Polyline::Closed->cast($self);
}
sub lines {
my $self = shift;
return map Slic3r::Line->new($_), polygon_lines($self);
}
sub cleanup {
my $self = shift;
polygon_remove_parallel_continuous_edges($self);
}
sub point_on_segment {
my $self = shift;
my ($point) = @_;
return polygon_segment_having_point($self, $point);
}
sub encloses_point {
my $self = shift;
my ($point) = @_;
return point_in_polygon($point, $self);
}
sub translate {
my $self = shift;
my ($x, $y) = @_;
@$self = move_points([$x, $y], @$self);
}
sub rotate {
my $self = shift;
my ($angle, $center) = @_;
@$self = rotate_points($angle, $center, @$self);
}
sub area {
my $self = shift;
return Slic3r::Geometry::Clipper::area($self);
}
sub safety_offset {
my $self = shift;
return (ref $self)->new(Slic3r::Geometry::Clipper::safety_offset([$self])->[0]);
}
sub offset {
my $self = shift;
my ($distance, $scale, $joinType, $miterLimit) = @_;
$scale ||= $Slic3r::resolution * 1000000;
$joinType = JT_MITER if !defined $joinType;
$miterLimit ||= 2;
my $offsets = Math::Clipper::offset([$self], $distance, $scale, $joinType, $miterLimit);
return @$offsets;
}
1;
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