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package Slic3r::Polyline;
use Moo;
use Math::Clipper qw();
use Slic3r::Geometry qw(A B polyline_remove_parallel_continuous_edges polyline_remove_acute_vertices
polygon_remove_acute_vertices polygon_remove_parallel_continuous_edges move_points same_point);
use Sub::Quote;
use XXX;
# arrayref of ordered points
has 'points' => (
is => 'rw',
required => 1,
default => sub { [] },
isa => quote_sub q{ use Carp; confess "invalid points" if grep ref $_ ne 'Slic3r::Point', @{$_[0]} },
);
sub id {
my $self = shift;
return join ' - ', sort map $_->id, @{$self->points};
}
sub cast {
my $class = shift;
my ($points, %args) = @_;
$points = [ map Slic3r::Point->cast($_), @$points ];
return $class->new(points => $points, %args);
}
sub lines {
my $self = shift;
my @lines = ();
my $previous_point;
foreach my $point (@{ $self->points }) {
if ($previous_point) {
push @lines, Slic3r::Line->new($previous_point, $point);
}
$previous_point = $point;
}
return @lines;
}
sub p {
my $self = shift;
return [ @{$self->points} ];
}
sub merge_continuous_lines {
my $self = shift;
my $points = $self->p;
if ($self->isa('Slic3r::Polyline::Closed')) {
polygon_remove_parallel_continuous_edges($points);
} else {
polyline_remove_parallel_continuous_edges($points);
}
@{$self->points} = map Slic3r::Point->new($_), @$points;
}
sub remove_acute_vertices {
my $self = shift;
my $points = $self->p;
if ($self->isa('Slic3r::Polyline::Closed')) {
polygon_remove_acute_vertices($points);
} else {
polyline_remove_acute_vertices($points);
}
@{$self->points} = map Slic3r::Point->new($_), @$points;
}
sub cleanup {
my $self = shift;
my $tolerance = shift || 10;
my $points = $self->p;
push @$points, $points->[0] if $self->isa('Slic3r::Polyline::Closed');
my @clean_points = map Slic3r::Point->new($_),
Slic3r::Geometry::Douglas_Peucker($self->p, $tolerance);
pop @clean_points if $self->isa('Slic3r::Polyline::Closed');
@{$self->points} = @clean_points;
}
sub reverse_points {
my $self = shift;
@{$self->points} = reverse @{$self->points};
}
sub is_counter_clockwise {
my $self = shift;
return Math::Clipper::is_counter_clockwise($self->p);
}
sub make_counter_clockwise {
my $self = shift;
$self->reverse_points if !$self->is_counter_clockwise;
}
sub make_clockwise {
my $self = shift;
$self->reverse_points if $self->is_counter_clockwise;
}
sub nearest_point_to {
my $self = shift;
my ($point) = @_;
$point = Slic3r::Geometry::nearest_point($point, $self->p);
return Slic3r::Point->new($point);
}
sub has_segment {
my $self = shift;
my ($line) = @_;
for ($self->lines) {
return 1 if $_->has_segment($line);
}
return 0;
}
sub clip_with_polygon {
my $self = shift;
my ($polygon) = @_;
return $self->clip_with_expolygon(Slic3r::ExPolygon->new($polygon));
}
sub clip_with_expolygon {
my $self = shift;
my ($expolygon) = @_;
my @polylines = ();
my $current_polyline = [];
foreach my $line ($self->lines) {
my ($first_line, @other_lines) = @{ $expolygon->clip_line($line) };
next unless $first_line;
if (!@$current_polyline) {
push @$current_polyline, @$first_line;
} elsif ($first_line->[A]->coincides_with($current_polyline->[-1])) {
push @$current_polyline, $first_line->[B];
} else {
push @polylines, $current_polyline;
$current_polyline = [ @$first_line ];
}
foreach my $other_line (@other_lines) {
if (@$current_polyline) {
push @polylines, $current_polyline;
$current_polyline = [];
}
push @polylines, [ @$other_line ];
}
}
if (@$current_polyline) {
push @polylines, $current_polyline;
}
if (@polylines > 1 && same_point($polylines[-1][-1], $polylines[0][0])) {
if (scalar(@{$polylines[-1]}) == 2) {
unshift @{$polylines[0]}, $polylines[-1][0];
pop @polylines;
} else {
push @{$polylines[-1]}, $polylines[0][-1];
shift @polylines;
}
}
return map Slic3r::Polyline->cast($_), @polylines;
}
sub bounding_box {
my $self = shift;
return Slic3r::Geometry::bounding_box($self->points);
}
sub translate {
my $self = shift;
my ($x, $y) = @_;
@{$self->points} = move_points([$x, $y], @{$self->points});
}
1;
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