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package Slic3r::Fill;
use Moo;
use Slic3r::Fill::ArchimedeanChords;
use Slic3r::Fill::Base;
use Slic3r::Fill::Concentric;
use Slic3r::Fill::Flowsnake;
use Slic3r::Fill::HilbertCurve;
use Slic3r::Fill::Honeycomb;
use Slic3r::Fill::Line;
use Slic3r::Fill::OctagramSpiral;
use Slic3r::Fill::PlanePath;
use Slic3r::Fill::Rectilinear;
use Slic3r::ExtrusionPath ':roles';
use Slic3r::Geometry qw(X Y scale shortest_path);
use Slic3r::Geometry::Clipper qw(union_ex diff_ex);
use Slic3r::Surface ':types';
has 'print' => (is => 'ro', required => 1);
has 'max_print_dimension' => (is => 'rw');
has 'fillers' => (is => 'rw', default => sub { {} });
our %FillTypes = (
archimedeanchords => 'Slic3r::Fill::ArchimedeanChords',
rectilinear => 'Slic3r::Fill::Rectilinear',
flowsnake => 'Slic3r::Fill::Flowsnake',
octagramspiral => 'Slic3r::Fill::OctagramSpiral',
hilbertcurve => 'Slic3r::Fill::HilbertCurve',
line => 'Slic3r::Fill::Line',
concentric => 'Slic3r::Fill::Concentric',
honeycomb => 'Slic3r::Fill::Honeycomb',
);
sub BUILD {
my $self = shift;
my $print_size = $self->print->size;
my $max_print_dimension = ($print_size->[X] > $print_size->[Y] ? $print_size->[X] : $print_size->[Y]) * sqrt(2);
$self->max_print_dimension($max_print_dimension);
$self->filler($_) for ('rectilinear', $Slic3r::Config->fill_pattern, $Slic3r::Config->solid_fill_pattern);
}
sub filler {
my $self = shift;
my ($filler) = @_;
if (!$self->fillers->{$filler}) {
$self->fillers->{$filler} = $FillTypes{$filler}->new(print => $self->print);
$self->fillers->{$filler}->max_print_dimension($self->max_print_dimension);
}
return $self->fillers->{$filler};
}
sub make_fill {
my $self = shift;
my ($layer) = @_;
$_->layer($layer) for values %{$self->fillers};
Slic3r::debugf "Filling layer %d:\n", $layer->id;
# merge overlapping surfaces
my @surfaces = ();
{
my @surfaces_with_bridge_angle = grep defined $_->bridge_angle, @{$layer->fill_surfaces};
# give priority to bridges
my @groups = Slic3r::Surface->group({merge_solid => 1}, @{$layer->fill_surfaces});
@groups = sort { defined $a->[0]->bridge_angle ? -1 : 0 } @groups;
foreach my $group (@groups) {
my $union = union_ex([ map $_->p, @$group ], undef, 1);
# subtract surfaces having a defined bridge_angle from any other
if (@surfaces_with_bridge_angle && !defined $group->[0]->bridge_angle) {
$union = diff_ex(
[ map @$_, @$union ],
[ map $_->p, @surfaces_with_bridge_angle ],
1,
);
}
# subtract any other surface already processed
$union = diff_ex(
[ map @$_, @$union ],
[ map $_->p, @surfaces ],
1,
);
push @surfaces, map Slic3r::Surface->new(
expolygon => $_,
surface_type => $group->[0]->surface_type,
bridge_angle => $group->[0]->bridge_angle,
depth_layers => $group->[0]->depth_layers,
), @$union;
}
}
# add spacing between adjacent surfaces
{
my $distance = $layer->infill_flow->scaled_spacing / 2;
my @offsets = ();
foreach my $surface (@surfaces) {
my $expolygon = $surface->expolygon;
my $diff = diff_ex(
[ $expolygon->offset($distance) ],
$expolygon,
1,
);
push @offsets, map @$_, @$diff;
}
my @new_surfaces = ();
foreach my $surface (@surfaces) {
my $diff = diff_ex(
$surface->expolygon,
[ @offsets ],
);
push @new_surfaces, map Slic3r::Surface->new(
expolygon => $_,
surface_type => $surface->surface_type,
bridge_angle => $surface->bridge_angle,
depth_layers => $surface->depth_layers,
), @$diff;
}
@surfaces = @new_surfaces;
}
my @fills = ();
my @fills_ordering_points = ();
SURFACE: foreach my $surface (@surfaces) {
my $filler = $Slic3r::Config->fill_pattern;
my $density = $Slic3r::Config->fill_density;
my $flow_spacing = $layer->infill_flow->spacing;
my $is_bridge = $layer->id > 0 && $surface->surface_type == S_TYPE_BOTTOM;
my $is_solid = (grep { $surface->surface_type == $_ } S_TYPE_TOP, S_TYPE_BOTTOM, S_TYPE_INTERNALSOLID) ? 1 : 0;
# force 100% density and rectilinear fill for external surfaces
if ($surface->surface_type != S_TYPE_INTERNAL) {
$density = 1;
$filler = $Slic3r::Config->solid_fill_pattern;
if ($is_bridge) {
$filler = 'rectilinear';
$flow_spacing = sqrt($Slic3r::Config->bridge_flow_ratio * ($layer->infill_flow->nozzle_diameter**2));
} elsif ($surface->surface_type == S_TYPE_INTERNALSOLID) {
$filler = 'rectilinear';
}
} else {
next SURFACE unless $density > 0;
}
my @paths = $self->fillers->{$filler}->fill_surface(
$surface,
density => $density,
flow_spacing => $flow_spacing,
);
my $params = shift @paths;
# save into layer
next unless @paths;
push @fills, Slic3r::ExtrusionPath::Collection->new(
paths => [
map Slic3r::ExtrusionPath->pack(
polyline => Slic3r::Polyline->new(@$_),
role => ($is_bridge
? EXTR_ROLE_BRIDGE
: $is_solid
? ($surface->surface_type == S_TYPE_TOP ? EXTR_ROLE_TOPSOLIDFILL : EXTR_ROLE_SOLIDFILL)
: EXTR_ROLE_FILL),
depth_layers => $surface->depth_layers,
flow_spacing => $params->{flow_spacing} || (warn "Warning: no flow_spacing was returned by the infill engine, please report this to the developer\n"),
), @paths,
],
);
push @fills_ordering_points, $paths[0][0];
}
# add thin fill regions
{
my %args = (
role => EXTR_ROLE_SOLIDFILL,
flow_spacing => $layer->perimeter_flow->spacing,
);
push @fills, map {
$_->isa('Slic3r::Polygon')
? (map $_->pack, Slic3r::ExtrusionLoop->new(polygon => $_, %args)->split_at_first_point)
: Slic3r::ExtrusionPath->pack(polyline => $_, %args),
} @{$layer->thin_fills};
}
push @fills_ordering_points, map $_->[0], @{$layer->thin_fills};
# organize infill paths using a shortest path search
@fills = @{shortest_path([
map [ $fills_ordering_points[$_], $fills[$_] ], 0..$#fills,
])};
return @fills;
}
1;
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